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Commit | Line | Data |
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f0706e82 | 1 | /* |
c5d54fbf | 2 | * Interface handling |
0d143fe1 | 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> |
d98ad83e | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
f0706e82 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
f0706e82 JB |
15 | #include <linux/kernel.h> |
16 | #include <linux/if_arp.h> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/rtnetlink.h> | |
19 | #include <net/mac80211.h> | |
cf0277e7 | 20 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
21 | #include "ieee80211_i.h" |
22 | #include "sta_info.h" | |
e9f207f0 | 23 | #include "debugfs_netdev.h" |
ee385855 | 24 | #include "mesh.h" |
0d143fe1 | 25 | #include "led.h" |
24487981 | 26 | #include "driver-ops.h" |
cf0277e7 | 27 | #include "wme.h" |
1be7fe8d | 28 | #include "rate.h" |
0d143fe1 | 29 | |
c771c9d8 JB |
30 | /** |
31 | * DOC: Interface list locking | |
32 | * | |
33 | * The interface list in each struct ieee80211_local is protected | |
34 | * three-fold: | |
35 | * | |
36 | * (1) modifications may only be done under the RTNL | |
37 | * (2) modifications and readers are protected against each other by | |
38 | * the iflist_mtx. | |
39 | * (3) modifications are done in an RCU manner so atomic readers | |
40 | * can traverse the list in RCU-safe blocks. | |
41 | * | |
42 | * As a consequence, reads (traversals) of the list can be protected | |
43 | * by either the RTNL, the iflist_mtx or RCU. | |
44 | */ | |
45 | ||
1ea6f9c0 JB |
46 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
47 | { | |
48 | struct ieee80211_chanctx_conf *chanctx_conf; | |
49 | int power; | |
50 | ||
51 | rcu_read_lock(); | |
52 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
53 | if (!chanctx_conf) { | |
54 | rcu_read_unlock(); | |
55 | return false; | |
56 | } | |
57 | ||
0430c883 | 58 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
1ea6f9c0 JB |
59 | rcu_read_unlock(); |
60 | ||
61 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
62 | power = min(power, sdata->user_power_level); | |
63 | ||
64 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
65 | power = min(power, sdata->ap_power_level); | |
66 | ||
67 | if (power != sdata->vif.bss_conf.txpower) { | |
68 | sdata->vif.bss_conf.txpower = power; | |
69 | ieee80211_hw_config(sdata->local, 0); | |
70 | return true; | |
71 | } | |
72 | ||
73 | return false; | |
74 | } | |
75 | ||
76 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) | |
77 | { | |
78 | if (__ieee80211_recalc_txpower(sdata)) | |
79 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); | |
80 | } | |
c771c9d8 | 81 | |
62a40a15 | 82 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
83 | { |
84 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
85 | return 0; | |
86 | ||
87 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
88 | return IEEE80211_CONF_CHANGE_IDLE; | |
89 | } | |
90 | ||
62a40a15 | 91 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
92 | { |
93 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
94 | return 0; | |
95 | ||
39ecc01d | 96 | ieee80211_flush_queues(local, NULL); |
cc45ae54 JB |
97 | |
98 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
99 | return IEEE80211_CONF_CHANGE_IDLE; | |
100 | } | |
101 | ||
62a40a15 JB |
102 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
103 | bool force_active) | |
cc45ae54 | 104 | { |
1d5e1266 | 105 | bool working, scanning, active; |
cc45ae54 | 106 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 107 | |
cc45ae54 JB |
108 | lockdep_assert_held(&local->mtx); |
109 | ||
62a40a15 JB |
110 | active = force_active || |
111 | !list_empty(&local->chanctx_list) || | |
112 | local->monitors; | |
cc45ae54 | 113 | |
1d5e1266 JB |
114 | working = !local->ops->remain_on_channel && |
115 | !list_empty(&local->roc_list); | |
cc45ae54 | 116 | |
f1e3e051 JB |
117 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
118 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 119 | |
cc45ae54 JB |
120 | if (working || scanning) |
121 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
122 | else | |
123 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
124 | ||
fd0f979a | 125 | if (active) |
cc45ae54 JB |
126 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
127 | else | |
128 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
129 | ||
130 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
131 | ||
fd0f979a | 132 | if (working || scanning || active) |
62a40a15 JB |
133 | return __ieee80211_idle_off(local); |
134 | return __ieee80211_idle_on(local); | |
135 | } | |
136 | ||
137 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
138 | { | |
139 | return __ieee80211_recalc_idle(local, true); | |
140 | } | |
141 | ||
142 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
143 | { | |
144 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
145 | if (change) |
146 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
147 | } |
148 | ||
0d143fe1 JB |
149 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
150 | { | |
09b1426e | 151 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 152 | return -EINVAL; |
0d143fe1 | 153 | |
0d143fe1 JB |
154 | dev->mtu = new_mtu; |
155 | return 0; | |
156 | } | |
157 | ||
3899ba90 | 158 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 159 | bool check_dup) |
478622e8 | 160 | { |
ac20976d HS |
161 | struct ieee80211_local *local = sdata->local; |
162 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
163 | u64 new, mask, tmp; |
164 | u8 *m; | |
165 | int ret = 0; | |
166 | ||
167 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
168 | return 0; | |
169 | ||
170 | m = addr; | |
171 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
172 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
173 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
174 | ||
175 | m = local->hw.wiphy->addr_mask; | |
176 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
177 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
178 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
179 | ||
31eba5bc FF |
180 | if (!check_dup) |
181 | return ret; | |
478622e8 HS |
182 | |
183 | mutex_lock(&local->iflist_mtx); | |
ac20976d HS |
184 | list_for_each_entry(iter, &local->interfaces, list) { |
185 | if (iter == sdata) | |
478622e8 HS |
186 | continue; |
187 | ||
3899ba90 JL |
188 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
189 | !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
478622e8 HS |
190 | continue; |
191 | ||
ac20976d | 192 | m = iter->vif.addr; |
478622e8 HS |
193 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
194 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
195 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
196 | ||
197 | if ((new & ~mask) != (tmp & ~mask)) { | |
198 | ret = -EINVAL; | |
199 | break; | |
200 | } | |
201 | } | |
202 | mutex_unlock(&local->iflist_mtx); | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
47846c9b JB |
207 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
208 | { | |
209 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 210 | struct sockaddr *sa = addr; |
31eba5bc | 211 | bool check_dup = true; |
47846c9b JB |
212 | int ret; |
213 | ||
9607e6b6 | 214 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
215 | return -EBUSY; |
216 | ||
31eba5bc FF |
217 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
218 | !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
219 | check_dup = false; | |
220 | ||
3899ba90 | 221 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
222 | if (ret) |
223 | return ret; | |
224 | ||
fc5f7577 | 225 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
226 | |
227 | if (ret == 0) | |
fc5f7577 | 228 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
229 | |
230 | return ret; | |
231 | } | |
232 | ||
0d143fe1 JB |
233 | static inline int identical_mac_addr_allowed(int type1, int type2) |
234 | { | |
235 | return type1 == NL80211_IFTYPE_MONITOR || | |
236 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
237 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
238 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
239 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
240 | (type1 == NL80211_IFTYPE_WDS && | |
241 | (type2 == NL80211_IFTYPE_WDS || | |
242 | type2 == NL80211_IFTYPE_AP)) || | |
243 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
244 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
245 | (type2 == NL80211_IFTYPE_AP || | |
246 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
247 | } | |
248 | ||
87490f6d JB |
249 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
250 | enum nl80211_iftype iftype) | |
0d143fe1 | 251 | { |
b4a4bf5d | 252 | struct ieee80211_local *local = sdata->local; |
87490f6d | 253 | struct ieee80211_sub_if_data *nsdata; |
b6a55015 | 254 | int ret; |
0d143fe1 | 255 | |
87490f6d | 256 | ASSERT_RTNL(); |
0d143fe1 JB |
257 | |
258 | /* we hold the RTNL here so can safely walk the list */ | |
259 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 260 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
261 | /* |
262 | * Only OCB and monitor mode may coexist | |
263 | */ | |
264 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
265 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
266 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
267 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
268 | return -EBUSY; | |
269 | ||
0d143fe1 JB |
270 | /* |
271 | * Allow only a single IBSS interface to be up at any | |
272 | * time. This is restricted because beacon distribution | |
273 | * cannot work properly if both are in the same IBSS. | |
274 | * | |
275 | * To remove this restriction we'd have to disallow them | |
276 | * from setting the same SSID on different IBSS interfaces | |
277 | * belonging to the same hardware. Then, however, we're | |
278 | * faced with having to adopt two different TSF timers... | |
279 | */ | |
87490f6d | 280 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
281 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
282 | return -EBUSY; | |
73da7d5b SW |
283 | /* |
284 | * will not add another interface while any channel | |
285 | * switch is active. | |
286 | */ | |
287 | if (nsdata->vif.csa_active) | |
288 | return -EBUSY; | |
0d143fe1 JB |
289 | |
290 | /* | |
291 | * The remaining checks are only performed for interfaces | |
292 | * with the same MAC address. | |
293 | */ | |
371a255e JB |
294 | if (!ether_addr_equal(sdata->vif.addr, |
295 | nsdata->vif.addr)) | |
0d143fe1 JB |
296 | continue; |
297 | ||
298 | /* | |
299 | * check whether it may have the same address | |
300 | */ | |
87490f6d | 301 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
302 | nsdata->vif.type)) |
303 | return -ENOTUNIQ; | |
304 | ||
305 | /* | |
306 | * can only add VLANs to enabled APs | |
307 | */ | |
87490f6d | 308 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
309 | nsdata->vif.type == NL80211_IFTYPE_AP) |
310 | sdata->bss = &nsdata->u.ap; | |
311 | } | |
312 | } | |
313 | ||
b6a55015 LC |
314 | mutex_lock(&local->chanctx_mtx); |
315 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); | |
316 | mutex_unlock(&local->chanctx_mtx); | |
317 | return ret; | |
87490f6d JB |
318 | } |
319 | ||
a9865538 JB |
320 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
321 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
322 | { |
323 | int n_queues = sdata->local->hw.queues; | |
324 | int i; | |
325 | ||
a9865538 | 326 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
327 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
328 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
329 | IEEE80211_INVAL_HW_QUEUE)) | |
330 | return -EINVAL; | |
331 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
332 | n_queues)) | |
333 | return -EINVAL; | |
334 | } | |
3a25a8c8 JB |
335 | } |
336 | ||
a9865538 JB |
337 | if ((iftype != NL80211_IFTYPE_AP && |
338 | iftype != NL80211_IFTYPE_P2P_GO && | |
339 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
bb3e10fb | 340 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { |
3a25a8c8 JB |
341 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
342 | return 0; | |
343 | } | |
344 | ||
345 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
346 | return -EINVAL; | |
347 | ||
348 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
349 | return -EINVAL; | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
85416a4f CL |
354 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
355 | const int offset) | |
356 | { | |
357 | struct ieee80211_local *local = sdata->local; | |
358 | u32 flags = sdata->u.mntr_flags; | |
359 | ||
360 | #define ADJUST(_f, _s) do { \ | |
361 | if (flags & MONITOR_FLAG_##_f) \ | |
362 | local->fif_##_s += offset; \ | |
363 | } while (0) | |
364 | ||
365 | ADJUST(FCSFAIL, fcsfail); | |
366 | ADJUST(PLCPFAIL, plcpfail); | |
367 | ADJUST(CONTROL, control); | |
368 | ADJUST(CONTROL, pspoll); | |
369 | ADJUST(OTHER_BSS, other_bss); | |
370 | ||
371 | #undef ADJUST | |
372 | } | |
373 | ||
3a25a8c8 JB |
374 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
375 | { | |
376 | struct ieee80211_local *local = sdata->local; | |
377 | int i; | |
378 | ||
379 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
380 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
381 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 382 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 383 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
384 | else |
385 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
386 | } |
387 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
388 | } | |
389 | ||
3c3e21e7 | 390 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
391 | { |
392 | struct ieee80211_sub_if_data *sdata; | |
8b305780 | 393 | int ret; |
4b6f1dd6 JB |
394 | |
395 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
396 | return 0; | |
397 | ||
8b305780 | 398 | ASSERT_RTNL(); |
685fb72b | 399 | |
4b6f1dd6 | 400 | if (local->monitor_sdata) |
8b305780 | 401 | return 0; |
4b6f1dd6 JB |
402 | |
403 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
8b305780 JB |
404 | if (!sdata) |
405 | return -ENOMEM; | |
4b6f1dd6 JB |
406 | |
407 | /* set up data */ | |
408 | sdata->local = local; | |
409 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
410 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
411 | wiphy_name(local->hw.wiphy)); | |
34171dc0 | 412 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; |
4b6f1dd6 | 413 | |
2475b1cc MS |
414 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
415 | ||
3a25a8c8 JB |
416 | ieee80211_set_default_queues(sdata); |
417 | ||
4b6f1dd6 JB |
418 | ret = drv_add_interface(local, sdata); |
419 | if (WARN_ON(ret)) { | |
420 | /* ok .. stupid driver, it asked for this! */ | |
421 | kfree(sdata); | |
8b305780 | 422 | return ret; |
4b6f1dd6 JB |
423 | } |
424 | ||
a9865538 | 425 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
3a25a8c8 JB |
426 | if (ret) { |
427 | kfree(sdata); | |
8b305780 | 428 | return ret; |
3a25a8c8 JB |
429 | } |
430 | ||
fab57a6c JB |
431 | mutex_lock(&local->iflist_mtx); |
432 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
433 | mutex_unlock(&local->iflist_mtx); | |
434 | ||
34a3740d | 435 | mutex_lock(&local->mtx); |
4bf88530 | 436 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a | 437 | IEEE80211_CHANCTX_EXCLUSIVE); |
34a3740d | 438 | mutex_unlock(&local->mtx); |
55de908a | 439 | if (ret) { |
fab57a6c | 440 | mutex_lock(&local->iflist_mtx); |
0c2bef46 | 441 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
fab57a6c JB |
442 | mutex_unlock(&local->iflist_mtx); |
443 | synchronize_net(); | |
55de908a JB |
444 | drv_remove_interface(local, sdata); |
445 | kfree(sdata); | |
8b305780 | 446 | return ret; |
55de908a JB |
447 | } |
448 | ||
8b305780 | 449 | return 0; |
4b6f1dd6 JB |
450 | } |
451 | ||
3c3e21e7 | 452 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
453 | { |
454 | struct ieee80211_sub_if_data *sdata; | |
455 | ||
456 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
457 | return; | |
458 | ||
8b305780 JB |
459 | ASSERT_RTNL(); |
460 | ||
685fb72b | 461 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 462 | |
685fb72b JB |
463 | sdata = rcu_dereference_protected(local->monitor_sdata, |
464 | lockdep_is_held(&local->iflist_mtx)); | |
8b305780 JB |
465 | if (!sdata) { |
466 | mutex_unlock(&local->iflist_mtx); | |
467 | return; | |
468 | } | |
4b6f1dd6 | 469 | |
0c2bef46 | 470 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
8b305780 JB |
471 | mutex_unlock(&local->iflist_mtx); |
472 | ||
4b6f1dd6 JB |
473 | synchronize_net(); |
474 | ||
34a3740d | 475 | mutex_lock(&local->mtx); |
55de908a | 476 | ieee80211_vif_release_channel(sdata); |
34a3740d | 477 | mutex_unlock(&local->mtx); |
55de908a | 478 | |
4b6f1dd6 JB |
479 | drv_remove_interface(local, sdata); |
480 | ||
481 | kfree(sdata); | |
482 | } | |
483 | ||
34d4bc4d JB |
484 | /* |
485 | * NOTE: Be very careful when changing this function, it must NOT return | |
486 | * an error on interface type changes that have been pre-checked, so most | |
487 | * checks should be in ieee80211_check_concurrent_iface. | |
488 | */ | |
f142c6b9 | 489 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 490 | { |
f142c6b9 JB |
491 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
492 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
493 | struct ieee80211_local *local = sdata->local; |
494 | struct sta_info *sta; | |
495 | u32 changed = 0; | |
496 | int res; | |
497 | u32 hw_reconf_flags = 0; | |
498 | ||
0d143fe1 JB |
499 | switch (sdata->vif.type) { |
500 | case NL80211_IFTYPE_WDS: | |
501 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
502 | return -ENOLINK; | |
503 | break; | |
665c93a9 JB |
504 | case NL80211_IFTYPE_AP_VLAN: { |
505 | struct ieee80211_sub_if_data *master; | |
506 | ||
0d143fe1 JB |
507 | if (!sdata->bss) |
508 | return -ENOLINK; | |
665c93a9 | 509 | |
4e141dad | 510 | mutex_lock(&local->mtx); |
0d143fe1 | 511 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
4e141dad | 512 | mutex_unlock(&local->mtx); |
665c93a9 JB |
513 | |
514 | master = container_of(sdata->bss, | |
515 | struct ieee80211_sub_if_data, u.ap); | |
516 | sdata->control_port_protocol = | |
517 | master->control_port_protocol; | |
518 | sdata->control_port_no_encrypt = | |
519 | master->control_port_no_encrypt; | |
1351c5d3 JB |
520 | sdata->vif.cab_queue = master->vif.cab_queue; |
521 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
522 | sizeof(sdata->vif.hw_queue)); | |
0d143fe1 | 523 | break; |
665c93a9 | 524 | } |
0d143fe1 JB |
525 | case NL80211_IFTYPE_AP: |
526 | sdata->bss = &sdata->u.ap; | |
527 | break; | |
528 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
529 | case NL80211_IFTYPE_STATION: |
530 | case NL80211_IFTYPE_MONITOR: | |
531 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 532 | case NL80211_IFTYPE_P2P_DEVICE: |
6e0bd6c3 | 533 | case NL80211_IFTYPE_OCB: |
0d143fe1 JB |
534 | /* no special treatment */ |
535 | break; | |
536 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 537 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
538 | case NL80211_IFTYPE_P2P_CLIENT: |
539 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
540 | /* cannot happen */ |
541 | WARN_ON(1); | |
542 | break; | |
543 | } | |
544 | ||
545 | if (local->open_count == 0) { | |
24487981 | 546 | res = drv_start(local); |
0d143fe1 JB |
547 | if (res) |
548 | goto err_del_bss; | |
e8975581 JB |
549 | /* we're brought up, everything changes */ |
550 | hw_reconf_flags = ~0; | |
1f87f7d3 | 551 | ieee80211_led_radio(local, true); |
67408c8c JB |
552 | ieee80211_mod_tpt_led_trig(local, |
553 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
554 | } |
555 | ||
556 | /* | |
bf533e0b JB |
557 | * Copy the hopefully now-present MAC address to |
558 | * this interface, if it has the special null one. | |
0d143fe1 | 559 | */ |
f142c6b9 | 560 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
561 | memcpy(dev->dev_addr, |
562 | local->hw.wiphy->perm_addr, | |
563 | ETH_ALEN); | |
564 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
565 | ||
566 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
567 | res = -EADDRNOTAVAIL; |
568 | goto err_stop; | |
0adc23f5 | 569 | } |
0d143fe1 JB |
570 | } |
571 | ||
0d143fe1 JB |
572 | switch (sdata->vif.type) { |
573 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
574 | /* no need to tell driver, but set carrier and chanctx */ |
575 | if (rtnl_dereference(sdata->bss->beacon)) { | |
576 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 577 | netif_carrier_on(dev); |
4d76d21b | 578 | } else { |
3edaf3e6 | 579 | netif_carrier_off(dev); |
4d76d21b | 580 | } |
0d143fe1 JB |
581 | break; |
582 | case NL80211_IFTYPE_MONITOR: | |
583 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
584 | local->cooked_mntrs++; | |
585 | break; | |
586 | } | |
587 | ||
31eba5bc FF |
588 | if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) { |
589 | res = drv_add_interface(local, sdata); | |
590 | if (res) | |
591 | goto err_stop; | |
592 | } else if (local->monitors == 0 && local->open_count == 0) { | |
075e0847 JB |
593 | res = ieee80211_add_virtual_monitor(local); |
594 | if (res) | |
595 | goto err_stop; | |
596 | } | |
597 | ||
0d143fe1 JB |
598 | /* must be before the call to ieee80211_configure_filter */ |
599 | local->monitors++; | |
e8975581 | 600 | if (local->monitors == 1) { |
0869aea0 JB |
601 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
602 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 603 | } |
0d143fe1 | 604 | |
85416a4f | 605 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 606 | ieee80211_configure_filter(local); |
801d929c FF |
607 | mutex_lock(&local->mtx); |
608 | ieee80211_recalc_idle(local); | |
609 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
610 | |
611 | netif_carrier_on(dev); | |
0d143fe1 | 612 | break; |
0d143fe1 | 613 | default: |
34d4bc4d | 614 | if (coming_up) { |
075e0847 JB |
615 | ieee80211_del_virtual_monitor(local); |
616 | ||
7b7eab6f | 617 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
618 | if (res) |
619 | goto err_stop; | |
a9865538 JB |
620 | res = ieee80211_check_queues(sdata, |
621 | ieee80211_vif_type_p2p(&sdata->vif)); | |
3a25a8c8 JB |
622 | if (res) |
623 | goto err_del_interface; | |
34d4bc4d | 624 | } |
0d143fe1 | 625 | |
29cbe68c | 626 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 627 | local->fif_pspoll++; |
7be5086d | 628 | local->fif_probe_req++; |
e3b90ca2 | 629 | |
e3b90ca2 | 630 | ieee80211_configure_filter(local); |
7be5086d JB |
631 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
632 | local->fif_probe_req++; | |
a3c9aa51 | 633 | } |
e3b90ca2 | 634 | |
f142c6b9 JB |
635 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
636 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 637 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 638 | |
c405c629 JB |
639 | switch (sdata->vif.type) { |
640 | case NL80211_IFTYPE_STATION: | |
641 | case NL80211_IFTYPE_ADHOC: | |
642 | case NL80211_IFTYPE_AP: | |
643 | case NL80211_IFTYPE_MESH_POINT: | |
6e0bd6c3 | 644 | case NL80211_IFTYPE_OCB: |
0d143fe1 | 645 | netif_carrier_off(dev); |
c405c629 | 646 | break; |
1411af15 | 647 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 648 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 649 | break; |
c405c629 | 650 | default: |
a2310824 JB |
651 | /* not reached */ |
652 | WARN_ON(1); | |
c405c629 | 653 | } |
59034591 EP |
654 | |
655 | /* | |
656 | * set default queue parameters so drivers don't | |
657 | * need to initialise the hardware if the hardware | |
658 | * doesn't start up with sane defaults | |
659 | */ | |
3abead59 | 660 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
661 | } |
662 | ||
2d2080c3 JB |
663 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
664 | ||
0d143fe1 JB |
665 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
666 | /* Create STA entry for the WDS peer */ | |
667 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
668 | GFP_KERNEL); | |
669 | if (!sta) { | |
670 | res = -ENOMEM; | |
671 | goto err_del_interface; | |
672 | } | |
673 | ||
83d5cc01 JB |
674 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
675 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
676 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
677 | |
678 | res = sta_info_insert(sta); | |
679 | if (res) { | |
680 | /* STA has been freed */ | |
681 | goto err_del_interface; | |
682 | } | |
1be7fe8d BJ |
683 | |
684 | rate_control_rate_init(sta); | |
1411af15 | 685 | netif_carrier_on(dev); |
f142c6b9 JB |
686 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
687 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
688 | } |
689 | ||
0d143fe1 JB |
690 | /* |
691 | * set_multicast_list will be invoked by the networking core | |
692 | * which will check whether any increments here were done in | |
693 | * error and sync them down to the hardware as filter flags. | |
694 | */ | |
695 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
696 | atomic_inc(&local->iff_allmultis); | |
697 | ||
698 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
699 | atomic_inc(&local->iff_promiscs); | |
700 | ||
34d4bc4d JB |
701 | if (coming_up) |
702 | local->open_count++; | |
703 | ||
59034591 | 704 | if (hw_reconf_flags) |
e8975581 | 705 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 706 | |
10f644a4 | 707 | ieee80211_recalc_ps(local, -1); |
965bedad | 708 | |
2b436312 JB |
709 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
710 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
711 | /* XXX: for AP_VLAN, actually track AP queues */ | |
712 | netif_tx_start_all_queues(dev); | |
713 | } else if (dev) { | |
2b730daa JB |
714 | unsigned long flags; |
715 | int n_acs = IEEE80211_NUM_ACS; | |
716 | int ac; | |
717 | ||
718 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
719 | n_acs = 1; | |
720 | ||
721 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
722 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
723 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
724 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
725 | for (ac = 0; ac < n_acs; ac++) { | |
726 | int ac_queue = sdata->vif.hw_queue[ac]; | |
727 | ||
728 | if (local->queue_stop_reasons[ac_queue] == 0 && | |
729 | skb_queue_empty(&local->pending[ac_queue])) | |
730 | netif_start_subqueue(dev, ac); | |
731 | } | |
732 | } | |
733 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
734 | } | |
0d143fe1 JB |
735 | |
736 | return 0; | |
737 | err_del_interface: | |
7b7eab6f | 738 | drv_remove_interface(local, sdata); |
0d143fe1 | 739 | err_stop: |
24487981 JB |
740 | if (!local->open_count) |
741 | drv_stop(local); | |
0d143fe1 JB |
742 | err_del_bss: |
743 | sdata->bss = NULL; | |
4e141dad MK |
744 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
745 | mutex_lock(&local->mtx); | |
0d143fe1 | 746 | list_del(&sdata->u.vlan.list); |
4e141dad MK |
747 | mutex_unlock(&local->mtx); |
748 | } | |
4d6c36fa | 749 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 750 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
751 | return res; |
752 | } | |
753 | ||
34d4bc4d | 754 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
755 | { |
756 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
757 | int err; |
758 | ||
759 | /* fail early if user set an invalid address */ | |
2fcf2824 | 760 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
761 | return -EADDRNOTAVAIL; |
762 | ||
763 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
764 | if (err) | |
765 | return err; | |
766 | ||
f142c6b9 | 767 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
768 | } |
769 | ||
770 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
771 | bool going_down) | |
772 | { | |
0d143fe1 | 773 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
774 | unsigned long flags; |
775 | struct sk_buff *skb, *tmp; | |
e8975581 | 776 | u32 hw_reconf_flags = 0; |
09f4114e | 777 | int i, flushed; |
397a7a24 | 778 | struct ps_data *ps; |
d2859df5 | 779 | struct cfg80211_chan_def chandef; |
0d143fe1 | 780 | |
c29acf20 RM |
781 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
782 | ||
e2fd5dbc | 783 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
784 | ieee80211_scan_cancel(local); |
785 | ||
0d143fe1 JB |
786 | /* |
787 | * Stop TX on this interface first. | |
788 | */ | |
f142c6b9 JB |
789 | if (sdata->dev) |
790 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 791 | |
c8f994ee | 792 | ieee80211_roc_purge(local, sdata); |
af6b6374 | 793 | |
8ffcc704 EG |
794 | switch (sdata->vif.type) { |
795 | case NL80211_IFTYPE_STATION: | |
572078be | 796 | ieee80211_mgd_stop(sdata); |
8ffcc704 EG |
797 | break; |
798 | case NL80211_IFTYPE_ADHOC: | |
cd7760e6 | 799 | ieee80211_ibss_stop(sdata); |
8ffcc704 EG |
800 | break; |
801 | case NL80211_IFTYPE_AP: | |
802 | cancel_work_sync(&sdata->u.ap.request_smps_work); | |
803 | break; | |
804 | default: | |
805 | break; | |
806 | } | |
cd7760e6 | 807 | |
0d143fe1 JB |
808 | /* |
809 | * Remove all stations associated with this interface. | |
810 | * | |
811 | * This must be done before calling ops->remove_interface() | |
812 | * because otherwise we can later invoke ops->sta_notify() | |
813 | * whenever the STAs are removed, and that invalidates driver | |
814 | * assumptions about always getting a vif pointer that is valid | |
815 | * (because if we remove a STA after ops->remove_interface() | |
816 | * the driver will have removed the vif info already!) | |
817 | * | |
09f4114e JB |
818 | * This is relevant only in WDS mode, in all other modes we've |
819 | * already removed all stations when disconnecting or similar, | |
820 | * so warn otherwise. | |
0d143fe1 | 821 | */ |
d34ba216 | 822 | flushed = sta_info_flush(sdata); |
09f4114e JB |
823 | WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
824 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); | |
0d143fe1 | 825 | |
afdc7c18 | 826 | /* don't count this interface for promisc/allmulti while it is down */ |
0d143fe1 JB |
827 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
828 | atomic_dec(&local->iff_allmultis); | |
829 | ||
830 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
831 | atomic_dec(&local->iff_promiscs); | |
832 | ||
7be5086d | 833 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 834 | local->fif_pspoll--; |
7be5086d JB |
835 | local->fif_probe_req--; |
836 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
837 | local->fif_probe_req--; | |
838 | } | |
e3b90ca2 | 839 | |
f142c6b9 JB |
840 | if (sdata->dev) { |
841 | netif_addr_lock_bh(sdata->dev); | |
842 | spin_lock_bh(&local->filter_lock); | |
843 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
844 | sdata->dev->addr_len); | |
845 | spin_unlock_bh(&local->filter_lock); | |
846 | netif_addr_unlock_bh(sdata->dev); | |
f142c6b9 | 847 | } |
3ac64bee | 848 | |
7cbf0ba5 VN |
849 | del_timer_sync(&local->dynamic_ps_timer); |
850 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 851 | |
04ecd257 | 852 | cancel_work_sync(&sdata->recalc_smps); |
dbd72850 | 853 | sdata_lock(sdata); |
59af6928 | 854 | mutex_lock(&local->mtx); |
73da7d5b | 855 | sdata->vif.csa_active = false; |
0c21e632 LC |
856 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
857 | sdata->u.mgd.csa_waiting_bcn = false; | |
a46992b4 LC |
858 | if (sdata->csa_block_tx) { |
859 | ieee80211_wake_vif_queues(local, sdata, | |
860 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
861 | sdata->csa_block_tx = false; | |
862 | } | |
59af6928 | 863 | mutex_unlock(&local->mtx); |
dbd72850 | 864 | sdata_unlock(sdata); |
59af6928 | 865 | |
73da7d5b | 866 | cancel_work_sync(&sdata->csa_finalize_work); |
04ecd257 | 867 | |
164eb02d SW |
868 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
869 | ||
870 | if (sdata->wdev.cac_started) { | |
d2859df5 | 871 | chandef = sdata->vif.bss_conf.chandef; |
b2c0958b | 872 | WARN_ON(local->suspended); |
34a3740d | 873 | mutex_lock(&local->mtx); |
164eb02d | 874 | ieee80211_vif_release_channel(sdata); |
34a3740d | 875 | mutex_unlock(&local->mtx); |
d2859df5 JD |
876 | cfg80211_cac_event(sdata->dev, &chandef, |
877 | NL80211_RADAR_CAC_ABORTED, | |
164eb02d SW |
878 | GFP_KERNEL); |
879 | } | |
880 | ||
0d143fe1 JB |
881 | /* APs need special treatment */ |
882 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 883 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
884 | |
885 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 886 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
887 | u.vlan.list) |
888 | dev_close(vlan->dev); | |
889 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
890 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
891 | /* remove all packets in parent bc_buf pointing to this dev */ | |
892 | ps = &sdata->bss->ps; | |
893 | ||
894 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
895 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
896 | if (skb->dev == sdata->dev) { | |
897 | __skb_unlink(skb, &ps->bc_buf); | |
898 | local->total_ps_buffered--; | |
899 | ieee80211_free_txskb(&local->hw, skb); | |
900 | } | |
901 | } | |
902 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
903 | } |
904 | ||
34d4bc4d JB |
905 | if (going_down) |
906 | local->open_count--; | |
0d143fe1 JB |
907 | |
908 | switch (sdata->vif.type) { | |
909 | case NL80211_IFTYPE_AP_VLAN: | |
4e141dad | 910 | mutex_lock(&local->mtx); |
0d143fe1 | 911 | list_del(&sdata->u.vlan.list); |
4e141dad | 912 | mutex_unlock(&local->mtx); |
0c2bef46 | 913 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
0d143fe1 JB |
914 | /* no need to tell driver */ |
915 | break; | |
916 | case NL80211_IFTYPE_MONITOR: | |
917 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
918 | local->cooked_mntrs--; | |
919 | break; | |
920 | } | |
921 | ||
922 | local->monitors--; | |
e8975581 | 923 | if (local->monitors == 0) { |
0869aea0 JB |
924 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
925 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 926 | } |
0d143fe1 | 927 | |
85416a4f | 928 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 929 | break; |
f142c6b9 JB |
930 | case NL80211_IFTYPE_P2P_DEVICE: |
931 | /* relies on synchronize_rcu() below */ | |
0c2bef46 | 932 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
f142c6b9 | 933 | /* fall through */ |
0d143fe1 | 934 | default: |
0b7dff4f | 935 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
936 | /* |
937 | * When we get here, the interface is marked down. | |
7907c7d3 JB |
938 | * Free the remaining keys, if there are any |
939 | * (shouldn't be, except maybe in WDS mode?) | |
75de9113 | 940 | * |
7907c7d3 JB |
941 | * Force the key freeing to always synchronize_net() |
942 | * to wait for the RX path in case it is using this | |
943 | * interface enqueuing frames * at this very time on | |
75de9113 | 944 | * another CPU. |
35f20c14 | 945 | */ |
7907c7d3 | 946 | ieee80211_free_keys(sdata, true); |
b9dcf712 | 947 | |
1861b845 JB |
948 | /* fall through */ |
949 | case NL80211_IFTYPE_AP: | |
950 | skb_queue_purge(&sdata->skb_queue); | |
0d143fe1 JB |
951 | } |
952 | ||
953 | sdata->bss = NULL; | |
954 | ||
5061b0c2 JB |
955 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
956 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
957 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
958 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
959 | if (info->control.vif == &sdata->vif) { | |
960 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 961 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
962 | } |
963 | } | |
964 | } | |
965 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 | 966 | |
b2c0958b JB |
967 | if (local->open_count == 0) |
968 | ieee80211_clear_tx_pending(local); | |
969 | ||
970 | /* | |
971 | * If the interface goes down while suspended, presumably because | |
972 | * the device was unplugged and that happens before our resume, | |
973 | * then the driver is already unconfigured and the remainder of | |
974 | * this function isn't needed. | |
975 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
976 | * memory allocated, it might expect teardown commands from | |
977 | * mac80211 here? | |
978 | */ | |
979 | if (local->suspended) { | |
980 | WARN_ON(local->wowlan); | |
981 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
982 | return; | |
983 | } | |
984 | ||
985 | switch (sdata->vif.type) { | |
986 | case NL80211_IFTYPE_AP_VLAN: | |
987 | break; | |
988 | case NL80211_IFTYPE_MONITOR: | |
989 | if (local->monitors == 0) | |
990 | ieee80211_del_virtual_monitor(local); | |
991 | ||
992 | mutex_lock(&local->mtx); | |
993 | ieee80211_recalc_idle(local); | |
994 | mutex_unlock(&local->mtx); | |
31eba5bc FF |
995 | |
996 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
997 | break; | |
998 | ||
999 | /* fall through */ | |
b2c0958b JB |
1000 | default: |
1001 | if (going_down) | |
1002 | drv_remove_interface(local, sdata); | |
1003 | } | |
1004 | ||
1005 | ieee80211_recalc_ps(local, -1); | |
1006 | ||
1007 | if (local->open_count == 0) { | |
1008 | ieee80211_stop_device(local); | |
1009 | ||
1010 | /* no reconfiguring after stop! */ | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | /* do after stop to avoid reconfiguring when we stop anyway */ | |
1015 | ieee80211_configure_filter(local); | |
1016 | ieee80211_hw_config(local, hw_reconf_flags); | |
1017 | ||
1018 | if (local->monitors == local->open_count) | |
075e0847 | 1019 | ieee80211_add_virtual_monitor(local); |
34d4bc4d JB |
1020 | } |
1021 | ||
1022 | static int ieee80211_stop(struct net_device *dev) | |
1023 | { | |
1024 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1025 | ||
1026 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 1027 | |
0d143fe1 JB |
1028 | return 0; |
1029 | } | |
1030 | ||
1031 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
1032 | { | |
0d143fe1 | 1033 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 1034 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
1035 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
1036 | ||
1037 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
1038 | promisc = !!(dev->flags & IFF_PROMISC); | |
1039 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
1040 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
1041 | ||
1042 | if (allmulti != sdata_allmulti) { | |
1043 | if (dev->flags & IFF_ALLMULTI) | |
1044 | atomic_inc(&local->iff_allmultis); | |
1045 | else | |
1046 | atomic_dec(&local->iff_allmultis); | |
1047 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
1048 | } | |
1049 | ||
1050 | if (promisc != sdata_promisc) { | |
1051 | if (dev->flags & IFF_PROMISC) | |
1052 | atomic_inc(&local->iff_promiscs); | |
1053 | else | |
1054 | atomic_dec(&local->iff_promiscs); | |
1055 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
1056 | } | |
3b8d81e0 | 1057 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 1058 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 1059 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 1060 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
1061 | } |
1062 | ||
75636525 JB |
1063 | /* |
1064 | * Called when the netdev is removed or, by the code below, before | |
1065 | * the interface type changes. | |
1066 | */ | |
f142c6b9 | 1067 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 JB |
1068 | { |
1069 | int i; | |
1070 | ||
75636525 | 1071 | /* free extra data */ |
7907c7d3 | 1072 | ieee80211_free_keys(sdata, false); |
75636525 | 1073 | |
aee14ceb JM |
1074 | ieee80211_debugfs_remove_netdev(sdata); |
1075 | ||
f0706e82 | 1076 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
1077 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
1078 | sdata->fragment_next = 0; | |
11a843b7 | 1079 | |
b9dcf712 JB |
1080 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1081 | mesh_rmc_free(sdata); | |
f0706e82 JB |
1082 | } |
1083 | ||
f142c6b9 JB |
1084 | static void ieee80211_uninit(struct net_device *dev) |
1085 | { | |
1086 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
1087 | } | |
1088 | ||
cf0277e7 | 1089 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
f663dd9a | 1090 | struct sk_buff *skb, |
99932d4f DB |
1091 | void *accel_priv, |
1092 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1093 | { |
1094 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1095 | } | |
1096 | ||
587e729e JB |
1097 | static const struct net_device_ops ieee80211_dataif_ops = { |
1098 | .ndo_open = ieee80211_open, | |
1099 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1100 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1101 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1102 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1103 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 1104 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1105 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
1106 | }; |
1107 | ||
cf0277e7 | 1108 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
f663dd9a | 1109 | struct sk_buff *skb, |
99932d4f DB |
1110 | void *accel_priv, |
1111 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1112 | { |
1113 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1114 | struct ieee80211_local *local = sdata->local; | |
1115 | struct ieee80211_hdr *hdr; | |
1116 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1117 | ||
32c5057b | 1118 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1119 | return 0; |
1120 | ||
1121 | if (skb->len < 4 || | |
b49bb574 | 1122 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1123 | return 0; /* doesn't matter, frame will be dropped */ |
1124 | ||
b49bb574 | 1125 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1126 | |
00e96dec | 1127 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1128 | } |
1129 | ||
587e729e JB |
1130 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1131 | .ndo_open = ieee80211_open, | |
1132 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1133 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1134 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1135 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1136 | .ndo_change_mtu = ieee80211_change_mtu, |
31eba5bc | 1137 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1138 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
1139 | }; |
1140 | ||
1141 | static void ieee80211_if_setup(struct net_device *dev) | |
1142 | { | |
1143 | ether_setup(dev); | |
550fd08c | 1144 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1145 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
1146 | dev->destructor = free_netdev; |
1147 | } | |
1148 | ||
1fa57d01 JB |
1149 | static void ieee80211_iface_work(struct work_struct *work) |
1150 | { | |
1151 | struct ieee80211_sub_if_data *sdata = | |
1152 | container_of(work, struct ieee80211_sub_if_data, work); | |
1153 | struct ieee80211_local *local = sdata->local; | |
1154 | struct sk_buff *skb; | |
344eec67 | 1155 | struct sta_info *sta; |
c1475ca9 | 1156 | struct ieee80211_ra_tid *ra_tid; |
08cf42e8 | 1157 | struct ieee80211_rx_agg *rx_agg; |
1fa57d01 JB |
1158 | |
1159 | if (!ieee80211_sdata_running(sdata)) | |
1160 | return; | |
1161 | ||
1162 | if (local->scanning) | |
1163 | return; | |
1164 | ||
1165 | /* | |
1166 | * ieee80211_queue_work() should have picked up most cases, | |
1167 | * here we'll pick the rest. | |
1168 | */ | |
1169 | if (WARN(local->suspended, | |
1170 | "interface work scheduled while going to suspend\n")) | |
1171 | return; | |
1172 | ||
1173 | /* first process frames */ | |
1174 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1175 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1176 | ||
c1475ca9 JB |
1177 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1178 | ra_tid = (void *)&skb->cb; | |
1179 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1180 | ra_tid->tid); | |
1181 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1182 | ra_tid = (void *)&skb->cb; | |
1183 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1184 | ra_tid->tid); | |
08cf42e8 MK |
1185 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_START) { |
1186 | rx_agg = (void *)&skb->cb; | |
1187 | mutex_lock(&local->sta_mtx); | |
1188 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
4549cf2b | 1189 | if (sta) |
08cf42e8 | 1190 | __ieee80211_start_rx_ba_session(sta, |
4549cf2b | 1191 | 0, 0, 0, 1, rx_agg->tid, |
08cf42e8 | 1192 | IEEE80211_MAX_AMPDU_BUF, |
4549cf2b | 1193 | false, true); |
08cf42e8 MK |
1194 | mutex_unlock(&local->sta_mtx); |
1195 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_STOP) { | |
1196 | rx_agg = (void *)&skb->cb; | |
1197 | mutex_lock(&local->sta_mtx); | |
1198 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
1199 | if (sta) | |
1200 | __ieee80211_stop_rx_ba_session(sta, | |
1201 | rx_agg->tid, | |
1202 | WLAN_BACK_RECIPIENT, 0, | |
1203 | false); | |
1204 | mutex_unlock(&local->sta_mtx); | |
8a4d32f3 AN |
1205 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_TDLS_CHSW) { |
1206 | ieee80211_process_tdls_channel_switch(sdata, skb); | |
c1475ca9 JB |
1207 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1208 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1209 | int len = skb->len; |
bed7ee6e | 1210 | |
a93e3644 | 1211 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1212 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1213 | if (sta) { |
1214 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1215 | case WLAN_ACTION_ADDBA_REQ: | |
1216 | ieee80211_process_addba_request( | |
1217 | local, sta, mgmt, len); | |
1218 | break; | |
1219 | case WLAN_ACTION_ADDBA_RESP: | |
1220 | ieee80211_process_addba_resp(local, sta, | |
1221 | mgmt, len); | |
1222 | break; | |
1223 | case WLAN_ACTION_DELBA: | |
1224 | ieee80211_process_delba(sdata, sta, | |
1225 | mgmt, len); | |
1226 | break; | |
1227 | default: | |
1228 | WARN_ON(1); | |
1229 | break; | |
1230 | } | |
1231 | } | |
a93e3644 | 1232 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1233 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1234 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1235 | /* | |
1236 | * So the frame isn't mgmt, but frame_control | |
1237 | * is at the right place anyway, of course, so | |
1238 | * the if statement is correct. | |
1239 | * | |
1240 | * Warn if we have other data frame types here, | |
1241 | * they must not get here. | |
1242 | */ | |
1243 | WARN_ON(hdr->frame_control & | |
1244 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1245 | WARN_ON(!(hdr->seq_ctrl & | |
1246 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1247 | /* | |
1248 | * This was a fragment of a frame, received while | |
1249 | * a block-ack session was active. That cannot be | |
1250 | * right, so terminate the session. | |
1251 | */ | |
a93e3644 | 1252 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1253 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1254 | if (sta) { |
1255 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1256 | IEEE80211_QOS_CTL_TID_MASK; | |
1257 | ||
1258 | __ieee80211_stop_rx_ba_session( | |
1259 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1260 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1261 | true); | |
344eec67 | 1262 | } |
a93e3644 | 1263 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1264 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1265 | case NL80211_IFTYPE_STATION: |
1266 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1267 | break; | |
1268 | case NL80211_IFTYPE_ADHOC: | |
1269 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1270 | break; | |
1271 | case NL80211_IFTYPE_MESH_POINT: | |
1272 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1273 | break; | |
1274 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1275 | break; | |
1276 | default: | |
1277 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1278 | break; |
1279 | } | |
36b3a628 JB |
1280 | |
1281 | kfree_skb(skb); | |
1fa57d01 JB |
1282 | } |
1283 | ||
1284 | /* then other type-dependent work */ | |
1285 | switch (sdata->vif.type) { | |
1286 | case NL80211_IFTYPE_STATION: | |
1287 | ieee80211_sta_work(sdata); | |
1288 | break; | |
1289 | case NL80211_IFTYPE_ADHOC: | |
1290 | ieee80211_ibss_work(sdata); | |
1291 | break; | |
1292 | case NL80211_IFTYPE_MESH_POINT: | |
1293 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1294 | break; | |
1295 | ieee80211_mesh_work(sdata); | |
1296 | break; | |
239281f8 RL |
1297 | case NL80211_IFTYPE_OCB: |
1298 | ieee80211_ocb_work(sdata); | |
1299 | break; | |
1fa57d01 JB |
1300 | default: |
1301 | break; | |
1302 | } | |
1303 | } | |
1304 | ||
04ecd257 JB |
1305 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1306 | { | |
1307 | struct ieee80211_sub_if_data *sdata = | |
1308 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1309 | ||
1310 | ieee80211_recalc_smps(sdata); | |
1311 | } | |
1fa57d01 | 1312 | |
75636525 JB |
1313 | /* |
1314 | * Helper function to initialise an interface to a specific type. | |
1315 | */ | |
1316 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1317 | enum nl80211_iftype type) |
f0706e82 | 1318 | { |
239281f8 RL |
1319 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1320 | 0xff, 0xff, 0xff}; | |
1321 | ||
75636525 JB |
1322 | /* clear type-dependent union */ |
1323 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1324 | ||
1325 | /* and set some type-dependent values */ | |
1326 | sdata->vif.type = type; | |
2ca27bcf | 1327 | sdata->vif.p2p = false; |
60719ffd | 1328 | sdata->wdev.iftype = type; |
75636525 | 1329 | |
a621fa4d JB |
1330 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1331 | sdata->control_port_no_encrypt = false; | |
2475b1cc | 1332 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1333 | sdata->vif.bss_conf.idle = true; |
a621fa4d | 1334 | |
b53be792 SW |
1335 | sdata->noack_map = 0; |
1336 | ||
f142c6b9 JB |
1337 | /* only monitor/p2p-device differ */ |
1338 | if (sdata->dev) { | |
1339 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1340 | sdata->dev->type = ARPHRD_ETHER; | |
1341 | } | |
75636525 | 1342 | |
35f20c14 | 1343 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1344 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1345 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1346 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1347 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1348 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1349 | |
75636525 | 1350 | switch (type) { |
2ca27bcf JB |
1351 | case NL80211_IFTYPE_P2P_GO: |
1352 | type = NL80211_IFTYPE_AP; | |
1353 | sdata->vif.type = type; | |
1354 | sdata->vif.p2p = true; | |
1355 | /* fall through */ | |
05c914fe | 1356 | case NL80211_IFTYPE_AP: |
d012a605 | 1357 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1358 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
687da132 EG |
1359 | INIT_WORK(&sdata->u.ap.request_smps_work, |
1360 | ieee80211_request_smps_ap_work); | |
ad2d223a | 1361 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
687da132 | 1362 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
75636525 | 1363 | break; |
2ca27bcf JB |
1364 | case NL80211_IFTYPE_P2P_CLIENT: |
1365 | type = NL80211_IFTYPE_STATION; | |
1366 | sdata->vif.type = type; | |
1367 | sdata->vif.p2p = true; | |
1368 | /* fall through */ | |
05c914fe | 1369 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1370 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1371 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1372 | break; |
6e0bd6c3 | 1373 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1374 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1375 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1376 | break; |
46900298 | 1377 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1378 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1379 | ieee80211_ibss_setup_sdata(sdata); |
1380 | break; | |
05c914fe | 1381 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1382 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1383 | ieee80211_mesh_init_sdata(sdata); | |
1384 | break; | |
05c914fe | 1385 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1386 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1387 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1388 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1389 | MONITOR_FLAG_OTHER_BSS; | |
1390 | break; | |
05c914fe | 1391 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1392 | sdata->vif.bss_conf.bssid = NULL; |
1393 | break; | |
05c914fe | 1394 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1395 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1396 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1397 | break; |
05c914fe | 1398 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1399 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1400 | BUG(); |
1401 | break; | |
1402 | } | |
1403 | ||
1404 | ieee80211_debugfs_add_netdev(sdata); | |
1405 | } | |
1406 | ||
34d4bc4d JB |
1407 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1408 | enum nl80211_iftype type) | |
1409 | { | |
1410 | struct ieee80211_local *local = sdata->local; | |
1411 | int ret, err; | |
2ca27bcf JB |
1412 | enum nl80211_iftype internal_type = type; |
1413 | bool p2p = false; | |
34d4bc4d JB |
1414 | |
1415 | ASSERT_RTNL(); | |
1416 | ||
1417 | if (!local->ops->change_interface) | |
1418 | return -EBUSY; | |
1419 | ||
1420 | switch (sdata->vif.type) { | |
1421 | case NL80211_IFTYPE_AP: | |
1422 | case NL80211_IFTYPE_STATION: | |
1423 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1424 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1425 | /* |
1426 | * Could maybe also all others here? | |
1427 | * Just not sure how that interacts | |
1428 | * with the RX/config path e.g. for | |
1429 | * mesh. | |
1430 | */ | |
1431 | break; | |
1432 | default: | |
1433 | return -EBUSY; | |
1434 | } | |
1435 | ||
1436 | switch (type) { | |
1437 | case NL80211_IFTYPE_AP: | |
1438 | case NL80211_IFTYPE_STATION: | |
1439 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1440 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1441 | /* |
1442 | * Could probably support everything | |
1443 | * but WDS here (WDS do_open can fail | |
1444 | * under memory pressure, which this | |
1445 | * code isn't prepared to handle). | |
1446 | */ | |
1447 | break; | |
2ca27bcf JB |
1448 | case NL80211_IFTYPE_P2P_CLIENT: |
1449 | p2p = true; | |
1450 | internal_type = NL80211_IFTYPE_STATION; | |
1451 | break; | |
1452 | case NL80211_IFTYPE_P2P_GO: | |
1453 | p2p = true; | |
1454 | internal_type = NL80211_IFTYPE_AP; | |
1455 | break; | |
34d4bc4d JB |
1456 | default: |
1457 | return -EBUSY; | |
1458 | } | |
1459 | ||
2ca27bcf | 1460 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1461 | if (ret) |
1462 | return ret; | |
1463 | ||
1464 | ieee80211_do_stop(sdata, false); | |
1465 | ||
f142c6b9 | 1466 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1467 | |
2ca27bcf | 1468 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1469 | if (ret) |
a9865538 | 1470 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1471 | |
3a25a8c8 JB |
1472 | /* |
1473 | * Ignore return value here, there's not much we can do since | |
1474 | * the driver changed the interface type internally already. | |
1475 | * The warnings will hopefully make driver authors fix it :-) | |
1476 | */ | |
a9865538 | 1477 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1478 | |
34d4bc4d JB |
1479 | ieee80211_setup_sdata(sdata, type); |
1480 | ||
f142c6b9 | 1481 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1482 | WARN(err, "type change: do_open returned %d", err); |
1483 | ||
1484 | return ret; | |
1485 | } | |
1486 | ||
f3947e2d | 1487 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1488 | enum nl80211_iftype type) |
75636525 | 1489 | { |
34d4bc4d JB |
1490 | int ret; |
1491 | ||
f3947e2d JB |
1492 | ASSERT_RTNL(); |
1493 | ||
2ca27bcf | 1494 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1495 | return 0; |
1496 | ||
34d4bc4d JB |
1497 | if (ieee80211_sdata_running(sdata)) { |
1498 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1499 | if (ret) | |
1500 | return ret; | |
1501 | } else { | |
1502 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1503 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1504 | ieee80211_setup_sdata(sdata, type); |
1505 | } | |
75636525 JB |
1506 | |
1507 | /* reset some values that shouldn't be kept across type changes */ | |
75636525 | 1508 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1509 | if (type == NL80211_IFTYPE_STATION) |
1510 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1511 | |
1512 | return 0; | |
f0706e82 JB |
1513 | } |
1514 | ||
fa9029f8 | 1515 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1516 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1517 | { |
1518 | struct ieee80211_sub_if_data *sdata; | |
1519 | u64 mask, start, addr, val, inc; | |
1520 | u8 *m; | |
1521 | u8 tmp_addr[ETH_ALEN]; | |
1522 | int i; | |
1523 | ||
1524 | /* default ... something at least */ | |
f142c6b9 | 1525 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1526 | |
1527 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1528 | local->hw.wiphy->n_addresses <= 1) | |
1529 | return; | |
1530 | ||
fa9029f8 JB |
1531 | mutex_lock(&local->iflist_mtx); |
1532 | ||
1533 | switch (type) { | |
1534 | case NL80211_IFTYPE_MONITOR: | |
1535 | /* doesn't matter */ | |
1536 | break; | |
1537 | case NL80211_IFTYPE_WDS: | |
1538 | case NL80211_IFTYPE_AP_VLAN: | |
1539 | /* match up with an AP interface */ | |
1540 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1541 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1542 | continue; | |
f142c6b9 | 1543 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1544 | break; |
1545 | } | |
1546 | /* keep default if no AP interface present */ | |
1547 | break; | |
6d71117a JB |
1548 | case NL80211_IFTYPE_P2P_CLIENT: |
1549 | case NL80211_IFTYPE_P2P_GO: | |
1550 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1551 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1552 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1553 | continue; | |
1554 | if (!ieee80211_sdata_running(sdata)) | |
1555 | continue; | |
1556 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1557 | goto out_unlock; | |
1558 | } | |
1559 | } | |
1560 | /* otherwise fall through */ | |
fa9029f8 JB |
1561 | default: |
1562 | /* assign a new address if possible -- try n_addresses first */ | |
1563 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1564 | bool used = false; | |
1565 | ||
1566 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1567 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1568 | sdata->vif.addr)) { | |
fa9029f8 JB |
1569 | used = true; |
1570 | break; | |
1571 | } | |
1572 | } | |
1573 | ||
1574 | if (!used) { | |
f142c6b9 | 1575 | memcpy(perm_addr, |
fa9029f8 JB |
1576 | local->hw.wiphy->addresses[i].addr, |
1577 | ETH_ALEN); | |
1578 | break; | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | /* try mask if available */ | |
1583 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1584 | break; | |
1585 | ||
1586 | m = local->hw.wiphy->addr_mask; | |
1587 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1588 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1589 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1590 | ||
1591 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1592 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1593 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1594 | break; |
1595 | } | |
1596 | ||
ac20976d HS |
1597 | /* |
1598 | * Pick address of existing interface in case user changed | |
1599 | * MAC address manually, default to perm_addr. | |
1600 | */ | |
fa9029f8 | 1601 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1602 | list_for_each_entry(sdata, &local->interfaces, list) { |
1603 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1604 | continue; | |
1605 | m = sdata->vif.addr; | |
1606 | break; | |
1607 | } | |
fa9029f8 JB |
1608 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1609 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1610 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1611 | ||
1612 | inc = 1ULL<<__ffs64(mask); | |
1613 | val = (start & mask); | |
1614 | addr = (start & ~mask) | (val & mask); | |
1615 | do { | |
1616 | bool used = false; | |
1617 | ||
1618 | tmp_addr[5] = addr >> 0*8; | |
1619 | tmp_addr[4] = addr >> 1*8; | |
1620 | tmp_addr[3] = addr >> 2*8; | |
1621 | tmp_addr[2] = addr >> 3*8; | |
1622 | tmp_addr[1] = addr >> 4*8; | |
1623 | tmp_addr[0] = addr >> 5*8; | |
1624 | ||
1625 | val += inc; | |
1626 | ||
1627 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1628 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1629 | used = true; |
1630 | break; | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | if (!used) { | |
f142c6b9 | 1635 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1636 | break; |
1637 | } | |
1638 | addr = (start & ~mask) | (val & mask); | |
1639 | } while (addr != start); | |
1640 | ||
1641 | break; | |
1642 | } | |
1643 | ||
6d71117a | 1644 | out_unlock: |
fa9029f8 JB |
1645 | mutex_unlock(&local->iflist_mtx); |
1646 | } | |
1647 | ||
3e122be0 | 1648 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1649 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1650 | struct vif_params *params) |
f0706e82 | 1651 | { |
f142c6b9 | 1652 | struct net_device *ndev = NULL; |
f0706e82 | 1653 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1654 | int ret, i; |
ded81f6b | 1655 | int txqs = 1; |
f0706e82 JB |
1656 | |
1657 | ASSERT_RTNL(); | |
75636525 | 1658 | |
f142c6b9 JB |
1659 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1660 | struct wireless_dev *wdev; | |
1661 | ||
1662 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1663 | GFP_KERNEL); | |
1664 | if (!sdata) | |
1665 | return -ENOMEM; | |
1666 | wdev = &sdata->wdev; | |
1667 | ||
1668 | sdata->dev = NULL; | |
1669 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1670 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1671 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1672 | } else { | |
1673 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1674 | txqs = IEEE80211_NUM_ACS; | |
1675 | ||
c835a677 TG |
1676 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
1677 | name, NET_NAME_UNKNOWN, | |
1678 | ieee80211_if_setup, txqs, 1); | |
f142c6b9 JB |
1679 | if (!ndev) |
1680 | return -ENOMEM; | |
1681 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1682 | ||
1683 | ndev->needed_headroom = local->tx_headroom + | |
1684 | 4*6 /* four MAC addresses */ | |
1685 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1686 | + 6 /* mesh */ | |
1687 | + 8 /* rfc1042/bridge tunnel */ | |
1688 | - ETH_HLEN /* ethernet hard_header_len */ | |
1689 | + IEEE80211_ENCRYPT_HEADROOM; | |
1690 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1691 | ||
1692 | ret = dev_alloc_name(ndev, ndev->name); | |
1693 | if (ret < 0) { | |
1694 | free_netdev(ndev); | |
1695 | return ret; | |
1696 | } | |
1697 | ||
1698 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
b5dfae02 BG |
1699 | if (params && is_valid_ether_addr(params->macaddr)) |
1700 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); | |
1701 | else | |
1702 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1703 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1704 | ||
1705 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1706 | sdata = netdev_priv(ndev); | |
1707 | ndev->ieee80211_ptr = &sdata->wdev; | |
1708 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1709 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1710 | ||
1711 | sdata->dev = ndev; | |
1712 | } | |
75636525 JB |
1713 | |
1714 | /* initialise type-independent data */ | |
f0706e82 | 1715 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1716 | sdata->local = local; |
75636525 JB |
1717 | |
1718 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1719 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1720 | ||
1721 | INIT_LIST_HEAD(&sdata->key_list); | |
1722 | ||
164eb02d SW |
1723 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1724 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1725 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1726 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1727 | |
37eb0b16 JM |
1728 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1729 | struct ieee80211_supported_band *sband; | |
1730 | sband = local->hw.wiphy->bands[i]; | |
1731 | sdata->rc_rateidx_mask[i] = | |
1732 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1733 | if (sband) |
1734 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1735 | sband->ht_cap.mcs.rx_mask, | |
1736 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1737 | else | |
1738 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1739 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1740 | } |
75636525 | 1741 | |
3a25a8c8 JB |
1742 | ieee80211_set_default_queues(sdata); |
1743 | ||
1ea6f9c0 JB |
1744 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1745 | sdata->user_power_level = local->user_power_level; | |
1746 | ||
2475b1cc MS |
1747 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1748 | ||
75636525 JB |
1749 | /* setup type-dependent data */ |
1750 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1751 | |
f142c6b9 JB |
1752 | if (ndev) { |
1753 | if (params) { | |
1754 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1755 | if (type == NL80211_IFTYPE_STATION) | |
1756 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1757 | } | |
9bc383de | 1758 | |
f142c6b9 | 1759 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1760 | |
b7ffbd7e JB |
1761 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1762 | ||
f142c6b9 JB |
1763 | ret = register_netdevice(ndev); |
1764 | if (ret) { | |
1765 | free_netdev(ndev); | |
1766 | return ret; | |
1767 | } | |
1768 | } | |
f0706e82 | 1769 | |
c771c9d8 | 1770 | mutex_lock(&local->iflist_mtx); |
79010420 | 1771 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1772 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1773 | |
84efbb84 JB |
1774 | if (new_wdev) |
1775 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1776 | |
f0706e82 | 1777 | return 0; |
f0706e82 JB |
1778 | } |
1779 | ||
f698d856 | 1780 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1781 | { |
f0706e82 | 1782 | ASSERT_RTNL(); |
11a843b7 | 1783 | |
c771c9d8 | 1784 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1785 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1786 | mutex_unlock(&sdata->local->iflist_mtx); |
1787 | ||
75636525 | 1788 | synchronize_rcu(); |
f142c6b9 JB |
1789 | |
1790 | if (sdata->dev) { | |
1791 | unregister_netdevice(sdata->dev); | |
1792 | } else { | |
1793 | cfg80211_unregister_wdev(&sdata->wdev); | |
1794 | kfree(sdata); | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1799 | { | |
1800 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1801 | return; | |
1802 | ieee80211_do_stop(sdata, true); | |
1803 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1804 | } |
1805 | ||
75636525 JB |
1806 | /* |
1807 | * Remove all interfaces, may only be called at hardware unregistration | |
1808 | * time because it doesn't do RCU-safe list removals. | |
1809 | */ | |
1810 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1811 | { |
75636525 | 1812 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1813 | LIST_HEAD(unreg_list); |
f142c6b9 | 1814 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1815 | |
1816 | ASSERT_RTNL(); | |
1817 | ||
c8aa22db JB |
1818 | /* |
1819 | * Close all AP_VLAN interfaces first, as otherwise they | |
1820 | * might be closed while the AP interface they belong to | |
1821 | * is closed, causing unregister_netdevice_many() to crash. | |
1822 | */ | |
1823 | list_for_each_entry(sdata, &local->interfaces, list) | |
1824 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1825 | dev_close(sdata->dev); | |
1826 | ||
efe117ab | 1827 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1828 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1829 | list_del(&sdata->list); | |
c771c9d8 | 1830 | |
f142c6b9 JB |
1831 | if (sdata->dev) |
1832 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1833 | else | |
1834 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1835 | } |
efe117ab ED |
1836 | mutex_unlock(&local->iflist_mtx); |
1837 | unregister_netdevice_many(&unreg_list); | |
f142c6b9 JB |
1838 | |
1839 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1840 | list_del(&sdata->list); | |
1841 | cfg80211_unregister_wdev(&sdata->wdev); | |
1842 | kfree(sdata); | |
1843 | } | |
f0706e82 | 1844 | } |
5cff20e6 | 1845 | |
47846c9b | 1846 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 1847 | unsigned long state, void *ptr) |
47846c9b | 1848 | { |
351638e7 | 1849 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
1850 | struct ieee80211_sub_if_data *sdata; |
1851 | ||
1852 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 1853 | return NOTIFY_DONE; |
47846c9b JB |
1854 | |
1855 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 1856 | return NOTIFY_DONE; |
47846c9b JB |
1857 | |
1858 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 1859 | return NOTIFY_DONE; |
47846c9b JB |
1860 | |
1861 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 1862 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 1863 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
1864 | |
1865 | return NOTIFY_OK; | |
47846c9b JB |
1866 | } |
1867 | ||
1868 | static struct notifier_block mac80211_netdev_notifier = { | |
1869 | .notifier_call = netdev_notify, | |
1870 | }; | |
1871 | ||
1872 | int ieee80211_iface_init(void) | |
1873 | { | |
1874 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1875 | } | |
1876 | ||
1877 | void ieee80211_iface_exit(void) | |
1878 | { | |
1879 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1880 | } |