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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 | ||
db82d8a9 LB |
76 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
77 | bool update_bss) | |
1ea6f9c0 | 78 | { |
db82d8a9 | 79 | if (__ieee80211_recalc_txpower(sdata) || update_bss) |
1ea6f9c0 JB |
80 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
81 | } | |
c771c9d8 | 82 | |
62a40a15 | 83 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
84 | { |
85 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
86 | return 0; | |
87 | ||
88 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
89 | return IEEE80211_CONF_CHANGE_IDLE; | |
90 | } | |
91 | ||
62a40a15 | 92 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
93 | { |
94 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
95 | return 0; | |
96 | ||
3b24f4c6 | 97 | ieee80211_flush_queues(local, NULL, false); |
cc45ae54 JB |
98 | |
99 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
100 | return IEEE80211_CONF_CHANGE_IDLE; | |
101 | } | |
102 | ||
62a40a15 JB |
103 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
104 | bool force_active) | |
cc45ae54 | 105 | { |
1d5e1266 | 106 | bool working, scanning, active; |
cc45ae54 | 107 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 108 | |
cc45ae54 JB |
109 | lockdep_assert_held(&local->mtx); |
110 | ||
62a40a15 JB |
111 | active = force_active || |
112 | !list_empty(&local->chanctx_list) || | |
113 | local->monitors; | |
cc45ae54 | 114 | |
1d5e1266 JB |
115 | working = !local->ops->remain_on_channel && |
116 | !list_empty(&local->roc_list); | |
cc45ae54 | 117 | |
f1e3e051 JB |
118 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
119 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 120 | |
cc45ae54 JB |
121 | if (working || scanning) |
122 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
123 | else | |
124 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
125 | ||
fd0f979a | 126 | if (active) |
cc45ae54 JB |
127 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
128 | else | |
129 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
130 | ||
131 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
132 | ||
fd0f979a | 133 | if (working || scanning || active) |
62a40a15 JB |
134 | return __ieee80211_idle_off(local); |
135 | return __ieee80211_idle_on(local); | |
136 | } | |
137 | ||
138 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
139 | { | |
140 | return __ieee80211_recalc_idle(local, true); | |
141 | } | |
142 | ||
143 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
144 | { | |
145 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
146 | if (change) |
147 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
148 | } |
149 | ||
0d143fe1 JB |
150 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
151 | { | |
09b1426e | 152 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 153 | return -EINVAL; |
0d143fe1 | 154 | |
0d143fe1 JB |
155 | dev->mtu = new_mtu; |
156 | return 0; | |
157 | } | |
158 | ||
3899ba90 | 159 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 160 | bool check_dup) |
478622e8 | 161 | { |
ac20976d HS |
162 | struct ieee80211_local *local = sdata->local; |
163 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
164 | u64 new, mask, tmp; |
165 | u8 *m; | |
166 | int ret = 0; | |
167 | ||
168 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
169 | return 0; | |
170 | ||
171 | m = addr; | |
172 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
173 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
174 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
175 | ||
176 | m = local->hw.wiphy->addr_mask; | |
177 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
178 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
179 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
180 | ||
31eba5bc FF |
181 | if (!check_dup) |
182 | return ret; | |
478622e8 HS |
183 | |
184 | mutex_lock(&local->iflist_mtx); | |
ac20976d HS |
185 | list_for_each_entry(iter, &local->interfaces, list) { |
186 | if (iter == sdata) | |
478622e8 HS |
187 | continue; |
188 | ||
3899ba90 JL |
189 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
190 | !(iter->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
478622e8 HS |
191 | continue; |
192 | ||
ac20976d | 193 | m = iter->vif.addr; |
478622e8 HS |
194 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
195 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
196 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
197 | ||
198 | if ((new & ~mask) != (tmp & ~mask)) { | |
199 | ret = -EINVAL; | |
200 | break; | |
201 | } | |
202 | } | |
203 | mutex_unlock(&local->iflist_mtx); | |
204 | ||
205 | return ret; | |
206 | } | |
207 | ||
47846c9b JB |
208 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
209 | { | |
210 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 211 | struct sockaddr *sa = addr; |
31eba5bc | 212 | bool check_dup = true; |
47846c9b JB |
213 | int ret; |
214 | ||
9607e6b6 | 215 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
216 | return -EBUSY; |
217 | ||
31eba5bc FF |
218 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
219 | !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
220 | check_dup = false; | |
221 | ||
3899ba90 | 222 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
223 | if (ret) |
224 | return ret; | |
225 | ||
fc5f7577 | 226 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
227 | |
228 | if (ret == 0) | |
fc5f7577 | 229 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
230 | |
231 | return ret; | |
232 | } | |
233 | ||
0d143fe1 JB |
234 | static inline int identical_mac_addr_allowed(int type1, int type2) |
235 | { | |
236 | return type1 == NL80211_IFTYPE_MONITOR || | |
237 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
238 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
239 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
240 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
241 | (type1 == NL80211_IFTYPE_WDS && | |
242 | (type2 == NL80211_IFTYPE_WDS || | |
243 | type2 == NL80211_IFTYPE_AP)) || | |
244 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
245 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
246 | (type2 == NL80211_IFTYPE_AP || | |
247 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
248 | } | |
249 | ||
87490f6d JB |
250 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
251 | enum nl80211_iftype iftype) | |
0d143fe1 | 252 | { |
b4a4bf5d | 253 | struct ieee80211_local *local = sdata->local; |
87490f6d | 254 | struct ieee80211_sub_if_data *nsdata; |
b6a55015 | 255 | int ret; |
0d143fe1 | 256 | |
87490f6d | 257 | ASSERT_RTNL(); |
0d143fe1 JB |
258 | |
259 | /* we hold the RTNL here so can safely walk the list */ | |
260 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 261 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
262 | /* |
263 | * Only OCB and monitor mode may coexist | |
264 | */ | |
265 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
266 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
267 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
268 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
269 | return -EBUSY; | |
270 | ||
0d143fe1 JB |
271 | /* |
272 | * Allow only a single IBSS interface to be up at any | |
273 | * time. This is restricted because beacon distribution | |
274 | * cannot work properly if both are in the same IBSS. | |
275 | * | |
276 | * To remove this restriction we'd have to disallow them | |
277 | * from setting the same SSID on different IBSS interfaces | |
278 | * belonging to the same hardware. Then, however, we're | |
279 | * faced with having to adopt two different TSF timers... | |
280 | */ | |
87490f6d | 281 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
282 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
283 | return -EBUSY; | |
73da7d5b SW |
284 | /* |
285 | * will not add another interface while any channel | |
286 | * switch is active. | |
287 | */ | |
288 | if (nsdata->vif.csa_active) | |
289 | return -EBUSY; | |
0d143fe1 JB |
290 | |
291 | /* | |
292 | * The remaining checks are only performed for interfaces | |
293 | * with the same MAC address. | |
294 | */ | |
371a255e JB |
295 | if (!ether_addr_equal(sdata->vif.addr, |
296 | nsdata->vif.addr)) | |
0d143fe1 JB |
297 | continue; |
298 | ||
299 | /* | |
300 | * check whether it may have the same address | |
301 | */ | |
87490f6d | 302 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
303 | nsdata->vif.type)) |
304 | return -ENOTUNIQ; | |
305 | ||
306 | /* | |
307 | * can only add VLANs to enabled APs | |
308 | */ | |
87490f6d | 309 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
310 | nsdata->vif.type == NL80211_IFTYPE_AP) |
311 | sdata->bss = &nsdata->u.ap; | |
312 | } | |
313 | } | |
314 | ||
b6a55015 LC |
315 | mutex_lock(&local->chanctx_mtx); |
316 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); | |
317 | mutex_unlock(&local->chanctx_mtx); | |
318 | return ret; | |
87490f6d JB |
319 | } |
320 | ||
a9865538 JB |
321 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
322 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
323 | { |
324 | int n_queues = sdata->local->hw.queues; | |
325 | int i; | |
326 | ||
a9865538 | 327 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
328 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
329 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
330 | IEEE80211_INVAL_HW_QUEUE)) | |
331 | return -EINVAL; | |
332 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
333 | n_queues)) | |
334 | return -EINVAL; | |
335 | } | |
3a25a8c8 JB |
336 | } |
337 | ||
a9865538 JB |
338 | if ((iftype != NL80211_IFTYPE_AP && |
339 | iftype != NL80211_IFTYPE_P2P_GO && | |
340 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
30686bf7 | 341 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
3a25a8c8 JB |
342 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
343 | return 0; | |
344 | } | |
345 | ||
346 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
347 | return -EINVAL; | |
348 | ||
349 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
350 | return -EINVAL; | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
85416a4f CL |
355 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
356 | const int offset) | |
357 | { | |
358 | struct ieee80211_local *local = sdata->local; | |
359 | u32 flags = sdata->u.mntr_flags; | |
360 | ||
361 | #define ADJUST(_f, _s) do { \ | |
362 | if (flags & MONITOR_FLAG_##_f) \ | |
363 | local->fif_##_s += offset; \ | |
364 | } while (0) | |
365 | ||
366 | ADJUST(FCSFAIL, fcsfail); | |
367 | ADJUST(PLCPFAIL, plcpfail); | |
368 | ADJUST(CONTROL, control); | |
369 | ADJUST(CONTROL, pspoll); | |
370 | ADJUST(OTHER_BSS, other_bss); | |
371 | ||
372 | #undef ADJUST | |
373 | } | |
374 | ||
3a25a8c8 JB |
375 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
376 | { | |
377 | struct ieee80211_local *local = sdata->local; | |
378 | int i; | |
379 | ||
380 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
30686bf7 | 381 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
3a25a8c8 | 382 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; |
a9d3c05c | 383 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 384 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
385 | else |
386 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
387 | } |
388 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
389 | } | |
390 | ||
3c3e21e7 | 391 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
392 | { |
393 | struct ieee80211_sub_if_data *sdata; | |
8b305780 | 394 | int ret; |
4b6f1dd6 | 395 | |
30686bf7 | 396 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
397 | return 0; |
398 | ||
8b305780 | 399 | ASSERT_RTNL(); |
685fb72b | 400 | |
4b6f1dd6 | 401 | if (local->monitor_sdata) |
8b305780 | 402 | return 0; |
4b6f1dd6 JB |
403 | |
404 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
8b305780 JB |
405 | if (!sdata) |
406 | return -ENOMEM; | |
4b6f1dd6 JB |
407 | |
408 | /* set up data */ | |
409 | sdata->local = local; | |
410 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
411 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
412 | wiphy_name(local->hw.wiphy)); | |
34171dc0 | 413 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; |
4b6f1dd6 | 414 | |
2475b1cc MS |
415 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
416 | ||
3a25a8c8 JB |
417 | ieee80211_set_default_queues(sdata); |
418 | ||
4b6f1dd6 JB |
419 | ret = drv_add_interface(local, sdata); |
420 | if (WARN_ON(ret)) { | |
421 | /* ok .. stupid driver, it asked for this! */ | |
422 | kfree(sdata); | |
8b305780 | 423 | return ret; |
4b6f1dd6 JB |
424 | } |
425 | ||
a9865538 | 426 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
3a25a8c8 JB |
427 | if (ret) { |
428 | kfree(sdata); | |
8b305780 | 429 | return ret; |
3a25a8c8 JB |
430 | } |
431 | ||
fab57a6c JB |
432 | mutex_lock(&local->iflist_mtx); |
433 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
434 | mutex_unlock(&local->iflist_mtx); | |
435 | ||
34a3740d | 436 | mutex_lock(&local->mtx); |
4bf88530 | 437 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a | 438 | IEEE80211_CHANCTX_EXCLUSIVE); |
34a3740d | 439 | mutex_unlock(&local->mtx); |
55de908a | 440 | if (ret) { |
fab57a6c | 441 | mutex_lock(&local->iflist_mtx); |
0c2bef46 | 442 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
fab57a6c JB |
443 | mutex_unlock(&local->iflist_mtx); |
444 | synchronize_net(); | |
55de908a JB |
445 | drv_remove_interface(local, sdata); |
446 | kfree(sdata); | |
8b305780 | 447 | return ret; |
55de908a JB |
448 | } |
449 | ||
8b305780 | 450 | return 0; |
4b6f1dd6 JB |
451 | } |
452 | ||
3c3e21e7 | 453 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
454 | { |
455 | struct ieee80211_sub_if_data *sdata; | |
456 | ||
30686bf7 | 457 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
458 | return; |
459 | ||
8b305780 JB |
460 | ASSERT_RTNL(); |
461 | ||
685fb72b | 462 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 463 | |
685fb72b JB |
464 | sdata = rcu_dereference_protected(local->monitor_sdata, |
465 | lockdep_is_held(&local->iflist_mtx)); | |
8b305780 JB |
466 | if (!sdata) { |
467 | mutex_unlock(&local->iflist_mtx); | |
468 | return; | |
469 | } | |
4b6f1dd6 | 470 | |
0c2bef46 | 471 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
8b305780 JB |
472 | mutex_unlock(&local->iflist_mtx); |
473 | ||
4b6f1dd6 JB |
474 | synchronize_net(); |
475 | ||
34a3740d | 476 | mutex_lock(&local->mtx); |
55de908a | 477 | ieee80211_vif_release_channel(sdata); |
34a3740d | 478 | mutex_unlock(&local->mtx); |
55de908a | 479 | |
4b6f1dd6 JB |
480 | drv_remove_interface(local, sdata); |
481 | ||
482 | kfree(sdata); | |
483 | } | |
484 | ||
34d4bc4d JB |
485 | /* |
486 | * NOTE: Be very careful when changing this function, it must NOT return | |
487 | * an error on interface type changes that have been pre-checked, so most | |
488 | * checks should be in ieee80211_check_concurrent_iface. | |
489 | */ | |
f142c6b9 | 490 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 491 | { |
f142c6b9 JB |
492 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
493 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
494 | struct ieee80211_local *local = sdata->local; |
495 | struct sta_info *sta; | |
496 | u32 changed = 0; | |
497 | int res; | |
498 | u32 hw_reconf_flags = 0; | |
499 | ||
0d143fe1 JB |
500 | switch (sdata->vif.type) { |
501 | case NL80211_IFTYPE_WDS: | |
502 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
503 | return -ENOLINK; | |
504 | break; | |
665c93a9 JB |
505 | case NL80211_IFTYPE_AP_VLAN: { |
506 | struct ieee80211_sub_if_data *master; | |
507 | ||
0d143fe1 JB |
508 | if (!sdata->bss) |
509 | return -ENOLINK; | |
665c93a9 | 510 | |
4e141dad | 511 | mutex_lock(&local->mtx); |
0d143fe1 | 512 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
4e141dad | 513 | mutex_unlock(&local->mtx); |
665c93a9 JB |
514 | |
515 | master = container_of(sdata->bss, | |
516 | struct ieee80211_sub_if_data, u.ap); | |
517 | sdata->control_port_protocol = | |
518 | master->control_port_protocol; | |
519 | sdata->control_port_no_encrypt = | |
520 | master->control_port_no_encrypt; | |
1351c5d3 JB |
521 | sdata->vif.cab_queue = master->vif.cab_queue; |
522 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
523 | sizeof(sdata->vif.hw_queue)); | |
2967e031 | 524 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; |
f9dca80b MK |
525 | |
526 | mutex_lock(&local->key_mtx); | |
527 | sdata->crypto_tx_tailroom_needed_cnt += | |
528 | master->crypto_tx_tailroom_needed_cnt; | |
529 | mutex_unlock(&local->key_mtx); | |
530 | ||
0d143fe1 | 531 | break; |
665c93a9 | 532 | } |
0d143fe1 JB |
533 | case NL80211_IFTYPE_AP: |
534 | sdata->bss = &sdata->u.ap; | |
535 | break; | |
536 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
537 | case NL80211_IFTYPE_STATION: |
538 | case NL80211_IFTYPE_MONITOR: | |
539 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 540 | case NL80211_IFTYPE_P2P_DEVICE: |
6e0bd6c3 | 541 | case NL80211_IFTYPE_OCB: |
0d143fe1 JB |
542 | /* no special treatment */ |
543 | break; | |
544 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 545 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
546 | case NL80211_IFTYPE_P2P_CLIENT: |
547 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
548 | /* cannot happen */ |
549 | WARN_ON(1); | |
550 | break; | |
551 | } | |
552 | ||
553 | if (local->open_count == 0) { | |
24487981 | 554 | res = drv_start(local); |
0d143fe1 JB |
555 | if (res) |
556 | goto err_del_bss; | |
e8975581 JB |
557 | /* we're brought up, everything changes */ |
558 | hw_reconf_flags = ~0; | |
1f87f7d3 | 559 | ieee80211_led_radio(local, true); |
67408c8c JB |
560 | ieee80211_mod_tpt_led_trig(local, |
561 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
562 | } |
563 | ||
564 | /* | |
bf533e0b JB |
565 | * Copy the hopefully now-present MAC address to |
566 | * this interface, if it has the special null one. | |
0d143fe1 | 567 | */ |
f142c6b9 | 568 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
569 | memcpy(dev->dev_addr, |
570 | local->hw.wiphy->perm_addr, | |
571 | ETH_ALEN); | |
572 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
573 | ||
574 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
575 | res = -EADDRNOTAVAIL; |
576 | goto err_stop; | |
0adc23f5 | 577 | } |
0d143fe1 JB |
578 | } |
579 | ||
0d143fe1 JB |
580 | switch (sdata->vif.type) { |
581 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
582 | /* no need to tell driver, but set carrier and chanctx */ |
583 | if (rtnl_dereference(sdata->bss->beacon)) { | |
584 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 585 | netif_carrier_on(dev); |
4d76d21b | 586 | } else { |
3edaf3e6 | 587 | netif_carrier_off(dev); |
4d76d21b | 588 | } |
0d143fe1 JB |
589 | break; |
590 | case NL80211_IFTYPE_MONITOR: | |
591 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
592 | local->cooked_mntrs++; | |
593 | break; | |
594 | } | |
595 | ||
31eba5bc FF |
596 | if (sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE) { |
597 | res = drv_add_interface(local, sdata); | |
598 | if (res) | |
599 | goto err_stop; | |
600 | } else if (local->monitors == 0 && local->open_count == 0) { | |
075e0847 JB |
601 | res = ieee80211_add_virtual_monitor(local); |
602 | if (res) | |
603 | goto err_stop; | |
604 | } | |
605 | ||
0d143fe1 JB |
606 | /* must be before the call to ieee80211_configure_filter */ |
607 | local->monitors++; | |
e8975581 | 608 | if (local->monitors == 1) { |
0869aea0 JB |
609 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
610 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 611 | } |
0d143fe1 | 612 | |
85416a4f | 613 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 614 | ieee80211_configure_filter(local); |
801d929c FF |
615 | mutex_lock(&local->mtx); |
616 | ieee80211_recalc_idle(local); | |
617 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
618 | |
619 | netif_carrier_on(dev); | |
0d143fe1 | 620 | break; |
0d143fe1 | 621 | default: |
34d4bc4d | 622 | if (coming_up) { |
075e0847 JB |
623 | ieee80211_del_virtual_monitor(local); |
624 | ||
7b7eab6f | 625 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
626 | if (res) |
627 | goto err_stop; | |
a9865538 JB |
628 | res = ieee80211_check_queues(sdata, |
629 | ieee80211_vif_type_p2p(&sdata->vif)); | |
3a25a8c8 JB |
630 | if (res) |
631 | goto err_del_interface; | |
34d4bc4d | 632 | } |
0d143fe1 | 633 | |
29cbe68c | 634 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 635 | local->fif_pspoll++; |
7be5086d | 636 | local->fif_probe_req++; |
e3b90ca2 | 637 | |
e3b90ca2 | 638 | ieee80211_configure_filter(local); |
7be5086d JB |
639 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
640 | local->fif_probe_req++; | |
a3c9aa51 | 641 | } |
e3b90ca2 | 642 | |
f142c6b9 JB |
643 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
644 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 645 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 646 | |
c405c629 JB |
647 | switch (sdata->vif.type) { |
648 | case NL80211_IFTYPE_STATION: | |
649 | case NL80211_IFTYPE_ADHOC: | |
650 | case NL80211_IFTYPE_AP: | |
651 | case NL80211_IFTYPE_MESH_POINT: | |
6e0bd6c3 | 652 | case NL80211_IFTYPE_OCB: |
0d143fe1 | 653 | netif_carrier_off(dev); |
c405c629 | 654 | break; |
1411af15 | 655 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 656 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 657 | break; |
c405c629 | 658 | default: |
a2310824 JB |
659 | /* not reached */ |
660 | WARN_ON(1); | |
c405c629 | 661 | } |
59034591 EP |
662 | |
663 | /* | |
664 | * set default queue parameters so drivers don't | |
665 | * need to initialise the hardware if the hardware | |
666 | * doesn't start up with sane defaults | |
667 | */ | |
3abead59 | 668 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
669 | } |
670 | ||
2d2080c3 JB |
671 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
672 | ||
0d143fe1 JB |
673 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
674 | /* Create STA entry for the WDS peer */ | |
675 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
676 | GFP_KERNEL); | |
677 | if (!sta) { | |
678 | res = -ENOMEM; | |
679 | goto err_del_interface; | |
680 | } | |
681 | ||
83d5cc01 JB |
682 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
683 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
684 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
685 | |
686 | res = sta_info_insert(sta); | |
687 | if (res) { | |
688 | /* STA has been freed */ | |
689 | goto err_del_interface; | |
690 | } | |
1be7fe8d BJ |
691 | |
692 | rate_control_rate_init(sta); | |
1411af15 | 693 | netif_carrier_on(dev); |
f142c6b9 JB |
694 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
695 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
696 | } |
697 | ||
0d143fe1 JB |
698 | /* |
699 | * set_multicast_list will be invoked by the networking core | |
700 | * which will check whether any increments here were done in | |
701 | * error and sync them down to the hardware as filter flags. | |
702 | */ | |
703 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
704 | atomic_inc(&local->iff_allmultis); | |
705 | ||
34d4bc4d JB |
706 | if (coming_up) |
707 | local->open_count++; | |
708 | ||
59034591 | 709 | if (hw_reconf_flags) |
e8975581 | 710 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 711 | |
10f644a4 | 712 | ieee80211_recalc_ps(local, -1); |
965bedad | 713 | |
2b436312 JB |
714 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
715 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
716 | /* XXX: for AP_VLAN, actually track AP queues */ | |
717 | netif_tx_start_all_queues(dev); | |
718 | } else if (dev) { | |
2b730daa JB |
719 | unsigned long flags; |
720 | int n_acs = IEEE80211_NUM_ACS; | |
721 | int ac; | |
722 | ||
723 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
724 | n_acs = 1; | |
725 | ||
726 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
727 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
728 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
729 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
730 | for (ac = 0; ac < n_acs; ac++) { | |
731 | int ac_queue = sdata->vif.hw_queue[ac]; | |
732 | ||
733 | if (local->queue_stop_reasons[ac_queue] == 0 && | |
734 | skb_queue_empty(&local->pending[ac_queue])) | |
735 | netif_start_subqueue(dev, ac); | |
736 | } | |
737 | } | |
738 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
739 | } | |
0d143fe1 JB |
740 | |
741 | return 0; | |
742 | err_del_interface: | |
7b7eab6f | 743 | drv_remove_interface(local, sdata); |
0d143fe1 | 744 | err_stop: |
24487981 JB |
745 | if (!local->open_count) |
746 | drv_stop(local); | |
0d143fe1 JB |
747 | err_del_bss: |
748 | sdata->bss = NULL; | |
4e141dad MK |
749 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
750 | mutex_lock(&local->mtx); | |
0d143fe1 | 751 | list_del(&sdata->u.vlan.list); |
4e141dad MK |
752 | mutex_unlock(&local->mtx); |
753 | } | |
4d6c36fa | 754 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 755 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
756 | return res; |
757 | } | |
758 | ||
34d4bc4d | 759 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
760 | { |
761 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
762 | int err; |
763 | ||
764 | /* fail early if user set an invalid address */ | |
2fcf2824 | 765 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
766 | return -EADDRNOTAVAIL; |
767 | ||
768 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
769 | if (err) | |
770 | return err; | |
771 | ||
f142c6b9 | 772 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
773 | } |
774 | ||
775 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
776 | bool going_down) | |
777 | { | |
0d143fe1 | 778 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
779 | unsigned long flags; |
780 | struct sk_buff *skb, *tmp; | |
e8975581 | 781 | u32 hw_reconf_flags = 0; |
09f4114e | 782 | int i, flushed; |
397a7a24 | 783 | struct ps_data *ps; |
d2859df5 | 784 | struct cfg80211_chan_def chandef; |
46238845 | 785 | bool cancel_scan; |
0d143fe1 | 786 | |
c29acf20 RM |
787 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
788 | ||
46238845 JB |
789 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
790 | if (cancel_scan) | |
352ffad6 BC |
791 | ieee80211_scan_cancel(local); |
792 | ||
0d143fe1 JB |
793 | /* |
794 | * Stop TX on this interface first. | |
795 | */ | |
f142c6b9 JB |
796 | if (sdata->dev) |
797 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 798 | |
c8f994ee | 799 | ieee80211_roc_purge(local, sdata); |
af6b6374 | 800 | |
8ffcc704 EG |
801 | switch (sdata->vif.type) { |
802 | case NL80211_IFTYPE_STATION: | |
572078be | 803 | ieee80211_mgd_stop(sdata); |
8ffcc704 EG |
804 | break; |
805 | case NL80211_IFTYPE_ADHOC: | |
cd7760e6 | 806 | ieee80211_ibss_stop(sdata); |
8ffcc704 EG |
807 | break; |
808 | case NL80211_IFTYPE_AP: | |
809 | cancel_work_sync(&sdata->u.ap.request_smps_work); | |
810 | break; | |
811 | default: | |
812 | break; | |
813 | } | |
cd7760e6 | 814 | |
0d143fe1 JB |
815 | /* |
816 | * Remove all stations associated with this interface. | |
817 | * | |
818 | * This must be done before calling ops->remove_interface() | |
819 | * because otherwise we can later invoke ops->sta_notify() | |
820 | * whenever the STAs are removed, and that invalidates driver | |
821 | * assumptions about always getting a vif pointer that is valid | |
822 | * (because if we remove a STA after ops->remove_interface() | |
823 | * the driver will have removed the vif info already!) | |
824 | * | |
5eb8f4d7 JB |
825 | * In WDS mode a station must exist here and be flushed, for |
826 | * AP_VLANs stations may exist since there's nothing else that | |
827 | * would have removed them, but in other modes there shouldn't | |
828 | * be any stations. | |
0d143fe1 | 829 | */ |
d34ba216 | 830 | flushed = sta_info_flush(sdata); |
5eb8f4d7 JB |
831 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
832 | ((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || | |
833 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1))); | |
0d143fe1 | 834 | |
df140465 | 835 | /* don't count this interface for allmulti while it is down */ |
0d143fe1 JB |
836 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
837 | atomic_dec(&local->iff_allmultis); | |
838 | ||
7be5086d | 839 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 840 | local->fif_pspoll--; |
7be5086d JB |
841 | local->fif_probe_req--; |
842 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
843 | local->fif_probe_req--; | |
844 | } | |
e3b90ca2 | 845 | |
f142c6b9 JB |
846 | if (sdata->dev) { |
847 | netif_addr_lock_bh(sdata->dev); | |
848 | spin_lock_bh(&local->filter_lock); | |
849 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
850 | sdata->dev->addr_len); | |
851 | spin_unlock_bh(&local->filter_lock); | |
852 | netif_addr_unlock_bh(sdata->dev); | |
f142c6b9 | 853 | } |
3ac64bee | 854 | |
7cbf0ba5 VN |
855 | del_timer_sync(&local->dynamic_ps_timer); |
856 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 857 | |
04ecd257 | 858 | cancel_work_sync(&sdata->recalc_smps); |
dbd72850 | 859 | sdata_lock(sdata); |
59af6928 | 860 | mutex_lock(&local->mtx); |
73da7d5b | 861 | sdata->vif.csa_active = false; |
0c21e632 LC |
862 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
863 | sdata->u.mgd.csa_waiting_bcn = false; | |
a46992b4 LC |
864 | if (sdata->csa_block_tx) { |
865 | ieee80211_wake_vif_queues(local, sdata, | |
866 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
867 | sdata->csa_block_tx = false; | |
868 | } | |
59af6928 | 869 | mutex_unlock(&local->mtx); |
dbd72850 | 870 | sdata_unlock(sdata); |
59af6928 | 871 | |
73da7d5b | 872 | cancel_work_sync(&sdata->csa_finalize_work); |
04ecd257 | 873 | |
164eb02d SW |
874 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
875 | ||
876 | if (sdata->wdev.cac_started) { | |
d2859df5 | 877 | chandef = sdata->vif.bss_conf.chandef; |
b2c0958b | 878 | WARN_ON(local->suspended); |
34a3740d | 879 | mutex_lock(&local->mtx); |
164eb02d | 880 | ieee80211_vif_release_channel(sdata); |
34a3740d | 881 | mutex_unlock(&local->mtx); |
d2859df5 JD |
882 | cfg80211_cac_event(sdata->dev, &chandef, |
883 | NL80211_RADAR_CAC_ABORTED, | |
164eb02d SW |
884 | GFP_KERNEL); |
885 | } | |
886 | ||
0d143fe1 JB |
887 | /* APs need special treatment */ |
888 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 889 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
890 | |
891 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 892 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
893 | u.vlan.list) |
894 | dev_close(vlan->dev); | |
895 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
896 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
897 | /* remove all packets in parent bc_buf pointing to this dev */ | |
898 | ps = &sdata->bss->ps; | |
899 | ||
900 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
901 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
902 | if (skb->dev == sdata->dev) { | |
903 | __skb_unlink(skb, &ps->bc_buf); | |
904 | local->total_ps_buffered--; | |
905 | ieee80211_free_txskb(&local->hw, skb); | |
906 | } | |
907 | } | |
908 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
909 | } |
910 | ||
34d4bc4d JB |
911 | if (going_down) |
912 | local->open_count--; | |
0d143fe1 JB |
913 | |
914 | switch (sdata->vif.type) { | |
915 | case NL80211_IFTYPE_AP_VLAN: | |
4e141dad | 916 | mutex_lock(&local->mtx); |
0d143fe1 | 917 | list_del(&sdata->u.vlan.list); |
4e141dad | 918 | mutex_unlock(&local->mtx); |
0c2bef46 | 919 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
10b68487 FF |
920 | /* see comment in the default case below */ |
921 | ieee80211_free_keys(sdata, true); | |
0d143fe1 JB |
922 | /* no need to tell driver */ |
923 | break; | |
924 | case NL80211_IFTYPE_MONITOR: | |
925 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
926 | local->cooked_mntrs--; | |
927 | break; | |
928 | } | |
929 | ||
930 | local->monitors--; | |
e8975581 | 931 | if (local->monitors == 0) { |
0869aea0 JB |
932 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
933 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 934 | } |
0d143fe1 | 935 | |
85416a4f | 936 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 937 | break; |
f142c6b9 JB |
938 | case NL80211_IFTYPE_P2P_DEVICE: |
939 | /* relies on synchronize_rcu() below */ | |
0c2bef46 | 940 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
f142c6b9 | 941 | /* fall through */ |
0d143fe1 | 942 | default: |
0b7dff4f | 943 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
944 | /* |
945 | * When we get here, the interface is marked down. | |
7907c7d3 | 946 | * Free the remaining keys, if there are any |
10b68487 FF |
947 | * (which can happen in AP mode if userspace sets |
948 | * keys before the interface is operating, and maybe | |
949 | * also in WDS mode) | |
75de9113 | 950 | * |
7907c7d3 JB |
951 | * Force the key freeing to always synchronize_net() |
952 | * to wait for the RX path in case it is using this | |
10b68487 | 953 | * interface enqueuing frames at this very time on |
75de9113 | 954 | * another CPU. |
35f20c14 | 955 | */ |
7907c7d3 | 956 | ieee80211_free_keys(sdata, true); |
1861b845 | 957 | skb_queue_purge(&sdata->skb_queue); |
0d143fe1 JB |
958 | } |
959 | ||
960 | sdata->bss = NULL; | |
961 | ||
5061b0c2 JB |
962 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
963 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
964 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
965 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
966 | if (info->control.vif == &sdata->vif) { | |
967 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 968 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
969 | } |
970 | } | |
971 | } | |
972 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 | 973 | |
ba8c3d6f FF |
974 | if (sdata->vif.txq) { |
975 | struct txq_info *txqi = to_txq_info(sdata->vif.txq); | |
976 | ||
977 | ieee80211_purge_tx_queue(&local->hw, &txqi->queue); | |
978 | atomic_set(&sdata->txqs_len[txqi->txq.ac], 0); | |
979 | } | |
980 | ||
b2c0958b JB |
981 | if (local->open_count == 0) |
982 | ieee80211_clear_tx_pending(local); | |
983 | ||
984 | /* | |
985 | * If the interface goes down while suspended, presumably because | |
986 | * the device was unplugged and that happens before our resume, | |
987 | * then the driver is already unconfigured and the remainder of | |
988 | * this function isn't needed. | |
989 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
990 | * memory allocated, it might expect teardown commands from | |
991 | * mac80211 here? | |
992 | */ | |
993 | if (local->suspended) { | |
994 | WARN_ON(local->wowlan); | |
995 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
996 | return; | |
997 | } | |
998 | ||
999 | switch (sdata->vif.type) { | |
1000 | case NL80211_IFTYPE_AP_VLAN: | |
1001 | break; | |
1002 | case NL80211_IFTYPE_MONITOR: | |
1003 | if (local->monitors == 0) | |
1004 | ieee80211_del_virtual_monitor(local); | |
1005 | ||
1006 | mutex_lock(&local->mtx); | |
1007 | ieee80211_recalc_idle(local); | |
1008 | mutex_unlock(&local->mtx); | |
31eba5bc FF |
1009 | |
1010 | if (!(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)) | |
1011 | break; | |
1012 | ||
1013 | /* fall through */ | |
b2c0958b JB |
1014 | default: |
1015 | if (going_down) | |
1016 | drv_remove_interface(local, sdata); | |
1017 | } | |
1018 | ||
1019 | ieee80211_recalc_ps(local, -1); | |
1020 | ||
46238845 JB |
1021 | if (cancel_scan) |
1022 | flush_delayed_work(&local->scan_work); | |
1023 | ||
b2c0958b JB |
1024 | if (local->open_count == 0) { |
1025 | ieee80211_stop_device(local); | |
1026 | ||
1027 | /* no reconfiguring after stop! */ | |
1028 | return; | |
1029 | } | |
1030 | ||
1031 | /* do after stop to avoid reconfiguring when we stop anyway */ | |
1032 | ieee80211_configure_filter(local); | |
1033 | ieee80211_hw_config(local, hw_reconf_flags); | |
1034 | ||
1035 | if (local->monitors == local->open_count) | |
075e0847 | 1036 | ieee80211_add_virtual_monitor(local); |
34d4bc4d JB |
1037 | } |
1038 | ||
1039 | static int ieee80211_stop(struct net_device *dev) | |
1040 | { | |
1041 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1042 | ||
1043 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 1044 | |
0d143fe1 JB |
1045 | return 0; |
1046 | } | |
1047 | ||
1048 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
1049 | { | |
0d143fe1 | 1050 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 1051 | struct ieee80211_local *local = sdata->local; |
df140465 | 1052 | int allmulti, sdata_allmulti; |
0d143fe1 JB |
1053 | |
1054 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
0d143fe1 | 1055 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
0d143fe1 JB |
1056 | |
1057 | if (allmulti != sdata_allmulti) { | |
1058 | if (dev->flags & IFF_ALLMULTI) | |
1059 | atomic_inc(&local->iff_allmultis); | |
1060 | else | |
1061 | atomic_dec(&local->iff_allmultis); | |
1062 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
1063 | } | |
1064 | ||
3b8d81e0 | 1065 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 1066 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 1067 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 1068 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
1069 | } |
1070 | ||
75636525 JB |
1071 | /* |
1072 | * Called when the netdev is removed or, by the code below, before | |
1073 | * the interface type changes. | |
1074 | */ | |
f142c6b9 | 1075 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 JB |
1076 | { |
1077 | int i; | |
1078 | ||
75636525 | 1079 | /* free extra data */ |
7907c7d3 | 1080 | ieee80211_free_keys(sdata, false); |
75636525 | 1081 | |
aee14ceb JM |
1082 | ieee80211_debugfs_remove_netdev(sdata); |
1083 | ||
f0706e82 | 1084 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
1085 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
1086 | sdata->fragment_next = 0; | |
11a843b7 | 1087 | |
b9dcf712 JB |
1088 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1089 | mesh_rmc_free(sdata); | |
f0706e82 JB |
1090 | } |
1091 | ||
f142c6b9 JB |
1092 | static void ieee80211_uninit(struct net_device *dev) |
1093 | { | |
1094 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
1095 | } | |
1096 | ||
cf0277e7 | 1097 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
f663dd9a | 1098 | struct sk_buff *skb, |
99932d4f DB |
1099 | void *accel_priv, |
1100 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1101 | { |
1102 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1103 | } | |
1104 | ||
5a490510 JB |
1105 | static struct rtnl_link_stats64 * |
1106 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1107 | { | |
1108 | int i; | |
1109 | ||
1110 | for_each_possible_cpu(i) { | |
1111 | const struct pcpu_sw_netstats *tstats; | |
1112 | u64 rx_packets, rx_bytes, tx_packets, tx_bytes; | |
1113 | unsigned int start; | |
1114 | ||
1115 | tstats = per_cpu_ptr(dev->tstats, i); | |
1116 | ||
1117 | do { | |
1118 | start = u64_stats_fetch_begin_irq(&tstats->syncp); | |
1119 | rx_packets = tstats->rx_packets; | |
1120 | tx_packets = tstats->tx_packets; | |
1121 | rx_bytes = tstats->rx_bytes; | |
1122 | tx_bytes = tstats->tx_bytes; | |
1123 | } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); | |
1124 | ||
1125 | stats->rx_packets += rx_packets; | |
1126 | stats->tx_packets += tx_packets; | |
1127 | stats->rx_bytes += rx_bytes; | |
1128 | stats->tx_bytes += tx_bytes; | |
1129 | } | |
1130 | ||
1131 | return stats; | |
1132 | } | |
1133 | ||
587e729e JB |
1134 | static const struct net_device_ops ieee80211_dataif_ops = { |
1135 | .ndo_open = ieee80211_open, | |
1136 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1137 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1138 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1139 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1140 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 1141 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1142 | .ndo_select_queue = ieee80211_netdev_select_queue, |
5a490510 | 1143 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1144 | }; |
1145 | ||
cf0277e7 | 1146 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
f663dd9a | 1147 | struct sk_buff *skb, |
99932d4f DB |
1148 | void *accel_priv, |
1149 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1150 | { |
1151 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1152 | struct ieee80211_local *local = sdata->local; | |
1153 | struct ieee80211_hdr *hdr; | |
1154 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1155 | ||
32c5057b | 1156 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1157 | return 0; |
1158 | ||
1159 | if (skb->len < 4 || | |
b49bb574 | 1160 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1161 | return 0; /* doesn't matter, frame will be dropped */ |
1162 | ||
b49bb574 | 1163 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1164 | |
00e96dec | 1165 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1166 | } |
1167 | ||
587e729e JB |
1168 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1169 | .ndo_open = ieee80211_open, | |
1170 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1171 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1172 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1173 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1174 | .ndo_change_mtu = ieee80211_change_mtu, |
31eba5bc | 1175 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1176 | .ndo_select_queue = ieee80211_monitor_select_queue, |
5a490510 | 1177 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1178 | }; |
1179 | ||
5a490510 JB |
1180 | static void ieee80211_if_free(struct net_device *dev) |
1181 | { | |
1182 | free_percpu(dev->tstats); | |
1183 | free_netdev(dev); | |
1184 | } | |
1185 | ||
587e729e JB |
1186 | static void ieee80211_if_setup(struct net_device *dev) |
1187 | { | |
1188 | ether_setup(dev); | |
550fd08c | 1189 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1190 | dev->netdev_ops = &ieee80211_dataif_ops; |
5a490510 | 1191 | dev->destructor = ieee80211_if_free; |
587e729e JB |
1192 | } |
1193 | ||
1fa57d01 JB |
1194 | static void ieee80211_iface_work(struct work_struct *work) |
1195 | { | |
1196 | struct ieee80211_sub_if_data *sdata = | |
1197 | container_of(work, struct ieee80211_sub_if_data, work); | |
1198 | struct ieee80211_local *local = sdata->local; | |
1199 | struct sk_buff *skb; | |
344eec67 | 1200 | struct sta_info *sta; |
c1475ca9 | 1201 | struct ieee80211_ra_tid *ra_tid; |
08cf42e8 | 1202 | struct ieee80211_rx_agg *rx_agg; |
1fa57d01 JB |
1203 | |
1204 | if (!ieee80211_sdata_running(sdata)) | |
1205 | return; | |
1206 | ||
1207 | if (local->scanning) | |
1208 | return; | |
1209 | ||
4afaff17 | 1210 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1211 | return; |
1212 | ||
1213 | /* first process frames */ | |
1214 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1215 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1216 | ||
c1475ca9 JB |
1217 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1218 | ra_tid = (void *)&skb->cb; | |
1219 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1220 | ra_tid->tid); | |
1221 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1222 | ra_tid = (void *)&skb->cb; | |
1223 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1224 | ra_tid->tid); | |
08cf42e8 MK |
1225 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_START) { |
1226 | rx_agg = (void *)&skb->cb; | |
1227 | mutex_lock(&local->sta_mtx); | |
1228 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
4549cf2b | 1229 | if (sta) |
08cf42e8 | 1230 | __ieee80211_start_rx_ba_session(sta, |
4549cf2b | 1231 | 0, 0, 0, 1, rx_agg->tid, |
08cf42e8 | 1232 | IEEE80211_MAX_AMPDU_BUF, |
4549cf2b | 1233 | false, true); |
08cf42e8 MK |
1234 | mutex_unlock(&local->sta_mtx); |
1235 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_STOP) { | |
1236 | rx_agg = (void *)&skb->cb; | |
1237 | mutex_lock(&local->sta_mtx); | |
1238 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
1239 | if (sta) | |
1240 | __ieee80211_stop_rx_ba_session(sta, | |
1241 | rx_agg->tid, | |
1242 | WLAN_BACK_RECIPIENT, 0, | |
1243 | false); | |
1244 | mutex_unlock(&local->sta_mtx); | |
8a4d32f3 AN |
1245 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_TDLS_CHSW) { |
1246 | ieee80211_process_tdls_channel_switch(sdata, skb); | |
c1475ca9 JB |
1247 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1248 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1249 | int len = skb->len; |
bed7ee6e | 1250 | |
a93e3644 | 1251 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1252 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1253 | if (sta) { |
1254 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1255 | case WLAN_ACTION_ADDBA_REQ: | |
1256 | ieee80211_process_addba_request( | |
1257 | local, sta, mgmt, len); | |
1258 | break; | |
1259 | case WLAN_ACTION_ADDBA_RESP: | |
1260 | ieee80211_process_addba_resp(local, sta, | |
1261 | mgmt, len); | |
1262 | break; | |
1263 | case WLAN_ACTION_DELBA: | |
1264 | ieee80211_process_delba(sdata, sta, | |
1265 | mgmt, len); | |
1266 | break; | |
1267 | default: | |
1268 | WARN_ON(1); | |
1269 | break; | |
1270 | } | |
1271 | } | |
a93e3644 | 1272 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1273 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1274 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1275 | /* | |
1276 | * So the frame isn't mgmt, but frame_control | |
1277 | * is at the right place anyway, of course, so | |
1278 | * the if statement is correct. | |
1279 | * | |
1280 | * Warn if we have other data frame types here, | |
1281 | * they must not get here. | |
1282 | */ | |
1283 | WARN_ON(hdr->frame_control & | |
1284 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1285 | WARN_ON(!(hdr->seq_ctrl & | |
1286 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1287 | /* | |
1288 | * This was a fragment of a frame, received while | |
1289 | * a block-ack session was active. That cannot be | |
1290 | * right, so terminate the session. | |
1291 | */ | |
a93e3644 | 1292 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1293 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1294 | if (sta) { |
1295 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1296 | IEEE80211_QOS_CTL_TID_MASK; | |
1297 | ||
1298 | __ieee80211_stop_rx_ba_session( | |
1299 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1300 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1301 | true); | |
344eec67 | 1302 | } |
a93e3644 | 1303 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1304 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1305 | case NL80211_IFTYPE_STATION: |
1306 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1307 | break; | |
1308 | case NL80211_IFTYPE_ADHOC: | |
1309 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1310 | break; | |
1311 | case NL80211_IFTYPE_MESH_POINT: | |
1312 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1313 | break; | |
1314 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1315 | break; | |
1316 | default: | |
1317 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1318 | break; |
1319 | } | |
36b3a628 JB |
1320 | |
1321 | kfree_skb(skb); | |
1fa57d01 JB |
1322 | } |
1323 | ||
1324 | /* then other type-dependent work */ | |
1325 | switch (sdata->vif.type) { | |
1326 | case NL80211_IFTYPE_STATION: | |
1327 | ieee80211_sta_work(sdata); | |
1328 | break; | |
1329 | case NL80211_IFTYPE_ADHOC: | |
1330 | ieee80211_ibss_work(sdata); | |
1331 | break; | |
1332 | case NL80211_IFTYPE_MESH_POINT: | |
1333 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1334 | break; | |
1335 | ieee80211_mesh_work(sdata); | |
1336 | break; | |
239281f8 RL |
1337 | case NL80211_IFTYPE_OCB: |
1338 | ieee80211_ocb_work(sdata); | |
1339 | break; | |
1fa57d01 JB |
1340 | default: |
1341 | break; | |
1342 | } | |
1343 | } | |
1344 | ||
04ecd257 JB |
1345 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1346 | { | |
1347 | struct ieee80211_sub_if_data *sdata = | |
1348 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1349 | ||
1350 | ieee80211_recalc_smps(sdata); | |
1351 | } | |
1fa57d01 | 1352 | |
75636525 JB |
1353 | /* |
1354 | * Helper function to initialise an interface to a specific type. | |
1355 | */ | |
1356 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1357 | enum nl80211_iftype type) |
f0706e82 | 1358 | { |
239281f8 RL |
1359 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1360 | 0xff, 0xff, 0xff}; | |
1361 | ||
75636525 JB |
1362 | /* clear type-dependent union */ |
1363 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1364 | ||
1365 | /* and set some type-dependent values */ | |
1366 | sdata->vif.type = type; | |
2ca27bcf | 1367 | sdata->vif.p2p = false; |
60719ffd | 1368 | sdata->wdev.iftype = type; |
75636525 | 1369 | |
a621fa4d JB |
1370 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1371 | sdata->control_port_no_encrypt = false; | |
2475b1cc | 1372 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1373 | sdata->vif.bss_conf.idle = true; |
a621fa4d | 1374 | |
b53be792 SW |
1375 | sdata->noack_map = 0; |
1376 | ||
f142c6b9 JB |
1377 | /* only monitor/p2p-device differ */ |
1378 | if (sdata->dev) { | |
1379 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1380 | sdata->dev->type = ARPHRD_ETHER; | |
1381 | } | |
75636525 | 1382 | |
35f20c14 | 1383 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1384 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1385 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1386 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1387 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1388 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1389 | |
75636525 | 1390 | switch (type) { |
2ca27bcf JB |
1391 | case NL80211_IFTYPE_P2P_GO: |
1392 | type = NL80211_IFTYPE_AP; | |
1393 | sdata->vif.type = type; | |
1394 | sdata->vif.p2p = true; | |
1395 | /* fall through */ | |
05c914fe | 1396 | case NL80211_IFTYPE_AP: |
d012a605 | 1397 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1398 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
687da132 EG |
1399 | INIT_WORK(&sdata->u.ap.request_smps_work, |
1400 | ieee80211_request_smps_ap_work); | |
ad2d223a | 1401 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
687da132 | 1402 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
75636525 | 1403 | break; |
2ca27bcf JB |
1404 | case NL80211_IFTYPE_P2P_CLIENT: |
1405 | type = NL80211_IFTYPE_STATION; | |
1406 | sdata->vif.type = type; | |
1407 | sdata->vif.p2p = true; | |
1408 | /* fall through */ | |
05c914fe | 1409 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1410 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1411 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1412 | break; |
6e0bd6c3 | 1413 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1414 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1415 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1416 | break; |
46900298 | 1417 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1418 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1419 | ieee80211_ibss_setup_sdata(sdata); |
1420 | break; | |
05c914fe | 1421 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1422 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1423 | ieee80211_mesh_init_sdata(sdata); | |
1424 | break; | |
05c914fe | 1425 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1426 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1427 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1428 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1429 | MONITOR_FLAG_OTHER_BSS; | |
1430 | break; | |
05c914fe | 1431 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1432 | sdata->vif.bss_conf.bssid = NULL; |
1433 | break; | |
05c914fe | 1434 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1435 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1436 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1437 | break; |
05c914fe | 1438 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1439 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1440 | BUG(); |
1441 | break; | |
1442 | } | |
1443 | ||
1444 | ieee80211_debugfs_add_netdev(sdata); | |
1445 | } | |
1446 | ||
34d4bc4d JB |
1447 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1448 | enum nl80211_iftype type) | |
1449 | { | |
1450 | struct ieee80211_local *local = sdata->local; | |
1451 | int ret, err; | |
2ca27bcf JB |
1452 | enum nl80211_iftype internal_type = type; |
1453 | bool p2p = false; | |
34d4bc4d JB |
1454 | |
1455 | ASSERT_RTNL(); | |
1456 | ||
1457 | if (!local->ops->change_interface) | |
1458 | return -EBUSY; | |
1459 | ||
1460 | switch (sdata->vif.type) { | |
1461 | case NL80211_IFTYPE_AP: | |
1462 | case NL80211_IFTYPE_STATION: | |
1463 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1464 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1465 | /* |
1466 | * Could maybe also all others here? | |
1467 | * Just not sure how that interacts | |
1468 | * with the RX/config path e.g. for | |
1469 | * mesh. | |
1470 | */ | |
1471 | break; | |
1472 | default: | |
1473 | return -EBUSY; | |
1474 | } | |
1475 | ||
1476 | switch (type) { | |
1477 | case NL80211_IFTYPE_AP: | |
1478 | case NL80211_IFTYPE_STATION: | |
1479 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1480 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1481 | /* |
1482 | * Could probably support everything | |
1483 | * but WDS here (WDS do_open can fail | |
1484 | * under memory pressure, which this | |
1485 | * code isn't prepared to handle). | |
1486 | */ | |
1487 | break; | |
2ca27bcf JB |
1488 | case NL80211_IFTYPE_P2P_CLIENT: |
1489 | p2p = true; | |
1490 | internal_type = NL80211_IFTYPE_STATION; | |
1491 | break; | |
1492 | case NL80211_IFTYPE_P2P_GO: | |
1493 | p2p = true; | |
1494 | internal_type = NL80211_IFTYPE_AP; | |
1495 | break; | |
34d4bc4d JB |
1496 | default: |
1497 | return -EBUSY; | |
1498 | } | |
1499 | ||
2ca27bcf | 1500 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1501 | if (ret) |
1502 | return ret; | |
1503 | ||
1504 | ieee80211_do_stop(sdata, false); | |
1505 | ||
f142c6b9 | 1506 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1507 | |
2ca27bcf | 1508 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1509 | if (ret) |
a9865538 | 1510 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1511 | |
3a25a8c8 JB |
1512 | /* |
1513 | * Ignore return value here, there's not much we can do since | |
1514 | * the driver changed the interface type internally already. | |
1515 | * The warnings will hopefully make driver authors fix it :-) | |
1516 | */ | |
a9865538 | 1517 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1518 | |
34d4bc4d JB |
1519 | ieee80211_setup_sdata(sdata, type); |
1520 | ||
f142c6b9 | 1521 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1522 | WARN(err, "type change: do_open returned %d", err); |
1523 | ||
1524 | return ret; | |
1525 | } | |
1526 | ||
f3947e2d | 1527 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1528 | enum nl80211_iftype type) |
75636525 | 1529 | { |
34d4bc4d JB |
1530 | int ret; |
1531 | ||
f3947e2d JB |
1532 | ASSERT_RTNL(); |
1533 | ||
2ca27bcf | 1534 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1535 | return 0; |
1536 | ||
34d4bc4d JB |
1537 | if (ieee80211_sdata_running(sdata)) { |
1538 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1539 | if (ret) | |
1540 | return ret; | |
1541 | } else { | |
1542 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1543 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1544 | ieee80211_setup_sdata(sdata, type); |
1545 | } | |
75636525 JB |
1546 | |
1547 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1548 | if (type == NL80211_IFTYPE_STATION) |
1549 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1550 | |
1551 | return 0; | |
f0706e82 JB |
1552 | } |
1553 | ||
fa9029f8 | 1554 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1555 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1556 | { |
1557 | struct ieee80211_sub_if_data *sdata; | |
1558 | u64 mask, start, addr, val, inc; | |
1559 | u8 *m; | |
1560 | u8 tmp_addr[ETH_ALEN]; | |
1561 | int i; | |
1562 | ||
1563 | /* default ... something at least */ | |
f142c6b9 | 1564 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1565 | |
1566 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1567 | local->hw.wiphy->n_addresses <= 1) | |
1568 | return; | |
1569 | ||
fa9029f8 JB |
1570 | mutex_lock(&local->iflist_mtx); |
1571 | ||
1572 | switch (type) { | |
1573 | case NL80211_IFTYPE_MONITOR: | |
1574 | /* doesn't matter */ | |
1575 | break; | |
1576 | case NL80211_IFTYPE_WDS: | |
1577 | case NL80211_IFTYPE_AP_VLAN: | |
1578 | /* match up with an AP interface */ | |
1579 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1580 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1581 | continue; | |
f142c6b9 | 1582 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1583 | break; |
1584 | } | |
1585 | /* keep default if no AP interface present */ | |
1586 | break; | |
6d71117a JB |
1587 | case NL80211_IFTYPE_P2P_CLIENT: |
1588 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1589 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1590 | list_for_each_entry(sdata, &local->interfaces, list) { |
1591 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1592 | continue; | |
1593 | if (!ieee80211_sdata_running(sdata)) | |
1594 | continue; | |
1595 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1596 | goto out_unlock; | |
1597 | } | |
1598 | } | |
1599 | /* otherwise fall through */ | |
fa9029f8 JB |
1600 | default: |
1601 | /* assign a new address if possible -- try n_addresses first */ | |
1602 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1603 | bool used = false; | |
1604 | ||
1605 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1606 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1607 | sdata->vif.addr)) { | |
fa9029f8 JB |
1608 | used = true; |
1609 | break; | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | if (!used) { | |
f142c6b9 | 1614 | memcpy(perm_addr, |
fa9029f8 JB |
1615 | local->hw.wiphy->addresses[i].addr, |
1616 | ETH_ALEN); | |
1617 | break; | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | /* try mask if available */ | |
1622 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1623 | break; | |
1624 | ||
1625 | m = local->hw.wiphy->addr_mask; | |
1626 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1627 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1628 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1629 | ||
1630 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1631 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1632 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1633 | break; |
1634 | } | |
1635 | ||
ac20976d HS |
1636 | /* |
1637 | * Pick address of existing interface in case user changed | |
1638 | * MAC address manually, default to perm_addr. | |
1639 | */ | |
fa9029f8 | 1640 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1641 | list_for_each_entry(sdata, &local->interfaces, list) { |
1642 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1643 | continue; | |
1644 | m = sdata->vif.addr; | |
1645 | break; | |
1646 | } | |
fa9029f8 JB |
1647 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1648 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1649 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1650 | ||
1651 | inc = 1ULL<<__ffs64(mask); | |
1652 | val = (start & mask); | |
1653 | addr = (start & ~mask) | (val & mask); | |
1654 | do { | |
1655 | bool used = false; | |
1656 | ||
1657 | tmp_addr[5] = addr >> 0*8; | |
1658 | tmp_addr[4] = addr >> 1*8; | |
1659 | tmp_addr[3] = addr >> 2*8; | |
1660 | tmp_addr[2] = addr >> 3*8; | |
1661 | tmp_addr[1] = addr >> 4*8; | |
1662 | tmp_addr[0] = addr >> 5*8; | |
1663 | ||
1664 | val += inc; | |
1665 | ||
1666 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1667 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1668 | used = true; |
1669 | break; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | if (!used) { | |
f142c6b9 | 1674 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1675 | break; |
1676 | } | |
1677 | addr = (start & ~mask) | (val & mask); | |
1678 | } while (addr != start); | |
1679 | ||
1680 | break; | |
1681 | } | |
1682 | ||
6d71117a | 1683 | out_unlock: |
fa9029f8 JB |
1684 | mutex_unlock(&local->iflist_mtx); |
1685 | } | |
1686 | ||
3e122be0 | 1687 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 1688 | unsigned char name_assign_type, |
84efbb84 | 1689 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1690 | struct vif_params *params) |
f0706e82 | 1691 | { |
f142c6b9 | 1692 | struct net_device *ndev = NULL; |
f0706e82 | 1693 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 1694 | struct txq_info *txqi; |
75636525 | 1695 | int ret, i; |
ded81f6b | 1696 | int txqs = 1; |
f0706e82 JB |
1697 | |
1698 | ASSERT_RTNL(); | |
75636525 | 1699 | |
f142c6b9 JB |
1700 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1701 | struct wireless_dev *wdev; | |
1702 | ||
1703 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1704 | GFP_KERNEL); | |
1705 | if (!sdata) | |
1706 | return -ENOMEM; | |
1707 | wdev = &sdata->wdev; | |
1708 | ||
1709 | sdata->dev = NULL; | |
1710 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1711 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1712 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1713 | } else { | |
ba8c3d6f FF |
1714 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
1715 | sizeof(void *)); | |
1716 | int txq_size = 0; | |
1717 | ||
1718 | if (local->ops->wake_tx_queue) | |
1719 | txq_size += sizeof(struct txq_info) + | |
1720 | local->hw.txq_data_size; | |
1721 | ||
f142c6b9 JB |
1722 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1723 | txqs = IEEE80211_NUM_ACS; | |
1724 | ||
ba8c3d6f | 1725 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 1726 | name, name_assign_type, |
c835a677 | 1727 | ieee80211_if_setup, txqs, 1); |
f142c6b9 JB |
1728 | if (!ndev) |
1729 | return -ENOMEM; | |
1730 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1731 | ||
5a490510 JB |
1732 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1733 | if (!ndev->tstats) { | |
1734 | free_netdev(ndev); | |
1735 | return -ENOMEM; | |
1736 | } | |
1737 | ||
f142c6b9 JB |
1738 | ndev->needed_headroom = local->tx_headroom + |
1739 | 4*6 /* four MAC addresses */ | |
1740 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1741 | + 6 /* mesh */ | |
1742 | + 8 /* rfc1042/bridge tunnel */ | |
1743 | - ETH_HLEN /* ethernet hard_header_len */ | |
1744 | + IEEE80211_ENCRYPT_HEADROOM; | |
1745 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1746 | ||
1747 | ret = dev_alloc_name(ndev, ndev->name); | |
1748 | if (ret < 0) { | |
1749 | free_netdev(ndev); | |
1750 | return ret; | |
1751 | } | |
1752 | ||
1753 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
b5dfae02 BG |
1754 | if (params && is_valid_ether_addr(params->macaddr)) |
1755 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); | |
1756 | else | |
1757 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1758 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1759 | ||
1760 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1761 | sdata = netdev_priv(ndev); | |
1762 | ndev->ieee80211_ptr = &sdata->wdev; | |
1763 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1764 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1765 | ||
ba8c3d6f FF |
1766 | if (txq_size) { |
1767 | txqi = netdev_priv(ndev) + size; | |
1768 | ieee80211_init_tx_queue(sdata, NULL, txqi, 0); | |
1769 | } | |
1770 | ||
f142c6b9 JB |
1771 | sdata->dev = ndev; |
1772 | } | |
75636525 JB |
1773 | |
1774 | /* initialise type-independent data */ | |
f0706e82 | 1775 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1776 | sdata->local = local; |
75636525 JB |
1777 | |
1778 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1779 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1780 | ||
1781 | INIT_LIST_HEAD(&sdata->key_list); | |
1782 | ||
164eb02d SW |
1783 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1784 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1785 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1786 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1787 | |
37eb0b16 JM |
1788 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1789 | struct ieee80211_supported_band *sband; | |
1790 | sband = local->hw.wiphy->bands[i]; | |
1791 | sdata->rc_rateidx_mask[i] = | |
1792 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1793 | if (sband) |
1794 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1795 | sband->ht_cap.mcs.rx_mask, | |
1796 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1797 | else | |
1798 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1799 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1800 | } |
75636525 | 1801 | |
3a25a8c8 JB |
1802 | ieee80211_set_default_queues(sdata); |
1803 | ||
1ea6f9c0 JB |
1804 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1805 | sdata->user_power_level = local->user_power_level; | |
1806 | ||
2475b1cc MS |
1807 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1808 | ||
75636525 JB |
1809 | /* setup type-dependent data */ |
1810 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1811 | |
f142c6b9 JB |
1812 | if (ndev) { |
1813 | if (params) { | |
1814 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1815 | if (type == NL80211_IFTYPE_STATION) | |
1816 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1817 | } | |
9bc383de | 1818 | |
f142c6b9 | 1819 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1820 | |
b7ffbd7e JB |
1821 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1822 | ||
f142c6b9 JB |
1823 | ret = register_netdevice(ndev); |
1824 | if (ret) { | |
1825 | free_netdev(ndev); | |
1826 | return ret; | |
1827 | } | |
1828 | } | |
f0706e82 | 1829 | |
c771c9d8 | 1830 | mutex_lock(&local->iflist_mtx); |
79010420 | 1831 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1832 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1833 | |
84efbb84 JB |
1834 | if (new_wdev) |
1835 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1836 | |
f0706e82 | 1837 | return 0; |
f0706e82 JB |
1838 | } |
1839 | ||
f698d856 | 1840 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1841 | { |
f0706e82 | 1842 | ASSERT_RTNL(); |
11a843b7 | 1843 | |
c771c9d8 | 1844 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1845 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1846 | mutex_unlock(&sdata->local->iflist_mtx); |
1847 | ||
75636525 | 1848 | synchronize_rcu(); |
f142c6b9 JB |
1849 | |
1850 | if (sdata->dev) { | |
1851 | unregister_netdevice(sdata->dev); | |
1852 | } else { | |
1853 | cfg80211_unregister_wdev(&sdata->wdev); | |
1854 | kfree(sdata); | |
1855 | } | |
1856 | } | |
1857 | ||
1858 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1859 | { | |
1860 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1861 | return; | |
1862 | ieee80211_do_stop(sdata, true); | |
1863 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1864 | } |
1865 | ||
75636525 JB |
1866 | /* |
1867 | * Remove all interfaces, may only be called at hardware unregistration | |
1868 | * time because it doesn't do RCU-safe list removals. | |
1869 | */ | |
1870 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1871 | { |
75636525 | 1872 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1873 | LIST_HEAD(unreg_list); |
f142c6b9 | 1874 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1875 | |
1876 | ASSERT_RTNL(); | |
1877 | ||
c8aa22db JB |
1878 | /* |
1879 | * Close all AP_VLAN interfaces first, as otherwise they | |
1880 | * might be closed while the AP interface they belong to | |
1881 | * is closed, causing unregister_netdevice_many() to crash. | |
1882 | */ | |
1883 | list_for_each_entry(sdata, &local->interfaces, list) | |
1884 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
1885 | dev_close(sdata->dev); | |
1886 | ||
efe117ab | 1887 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1888 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1889 | list_del(&sdata->list); | |
c771c9d8 | 1890 | |
f142c6b9 JB |
1891 | if (sdata->dev) |
1892 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1893 | else | |
1894 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1895 | } |
efe117ab ED |
1896 | mutex_unlock(&local->iflist_mtx); |
1897 | unregister_netdevice_many(&unreg_list); | |
f142c6b9 JB |
1898 | |
1899 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1900 | list_del(&sdata->list); | |
1901 | cfg80211_unregister_wdev(&sdata->wdev); | |
1902 | kfree(sdata); | |
1903 | } | |
f0706e82 | 1904 | } |
5cff20e6 | 1905 | |
47846c9b | 1906 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 1907 | unsigned long state, void *ptr) |
47846c9b | 1908 | { |
351638e7 | 1909 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
1910 | struct ieee80211_sub_if_data *sdata; |
1911 | ||
1912 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 1913 | return NOTIFY_DONE; |
47846c9b JB |
1914 | |
1915 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 1916 | return NOTIFY_DONE; |
47846c9b JB |
1917 | |
1918 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 1919 | return NOTIFY_DONE; |
47846c9b JB |
1920 | |
1921 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 1922 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 1923 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
1924 | |
1925 | return NOTIFY_OK; | |
47846c9b JB |
1926 | } |
1927 | ||
1928 | static struct notifier_block mac80211_netdev_notifier = { | |
1929 | .notifier_call = netdev_notify, | |
1930 | }; | |
1931 | ||
1932 | int ieee80211_iface_init(void) | |
1933 | { | |
1934 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1935 | } | |
1936 | ||
1937 | void ieee80211_iface_exit(void) | |
1938 | { | |
1939 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1940 | } |