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Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f0706e82 | 2 | /* |
c5d54fbf | 3 | * Interface handling |
0d143fe1 | 4 | * |
f0706e82 JB |
5 | * Copyright 2002-2005, Instant802 Networks, Inc. |
6 | * Copyright 2005-2006, Devicescape Software, Inc. | |
7 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 8 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 9 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
d2941df8 | 10 | * Copyright (c) 2016 Intel Deutschland GmbH |
15ddba5f | 11 | * Copyright (C) 2018-2023 Intel Corporation |
f0706e82 | 12 | */ |
5a0e3ad6 | 13 | #include <linux/slab.h> |
f0706e82 JB |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/rtnetlink.h> | |
183f47fc | 18 | #include <linux/kcov.h> |
f0706e82 | 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 | * | |
be0df01d JB |
36 | * (1) modifications may only be done under the RTNL *and* wiphy mutex |
37 | * *and* iflist_mtx | |
38 | * (2) modifications are done in an RCU manner so atomic readers | |
c771c9d8 JB |
39 | * can traverse the list in RCU-safe blocks. |
40 | * | |
41 | * As a consequence, reads (traversals) of the list can be protected | |
be0df01d | 42 | * by either the RTNL, the wiphy mutex, the iflist_mtx or RCU. |
c771c9d8 JB |
43 | */ |
44 | ||
16114496 | 45 | static void ieee80211_iface_work(struct wiphy *wiphy, struct wiphy_work *work); |
42bd20d9 | 46 | |
1ea6f9c0 JB |
47 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
48 | { | |
49 | struct ieee80211_chanctx_conf *chanctx_conf; | |
50 | int power; | |
51 | ||
52 | rcu_read_lock(); | |
d0a9123e | 53 | chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); |
1ea6f9c0 JB |
54 | if (!chanctx_conf) { |
55 | rcu_read_unlock(); | |
56 | return false; | |
57 | } | |
58 | ||
0430c883 | 59 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
1ea6f9c0 JB |
60 | rcu_read_unlock(); |
61 | ||
bfd8403a JB |
62 | if (sdata->deflink.user_power_level != IEEE80211_UNSET_POWER_LEVEL) |
63 | power = min(power, sdata->deflink.user_power_level); | |
1ea6f9c0 | 64 | |
bfd8403a JB |
65 | if (sdata->deflink.ap_power_level != IEEE80211_UNSET_POWER_LEVEL) |
66 | power = min(power, sdata->deflink.ap_power_level); | |
1ea6f9c0 JB |
67 | |
68 | if (power != sdata->vif.bss_conf.txpower) { | |
69 | sdata->vif.bss_conf.txpower = power; | |
70 | ieee80211_hw_config(sdata->local, 0); | |
71 | return true; | |
72 | } | |
73 | ||
74 | return false; | |
75 | } | |
76 | ||
db82d8a9 LB |
77 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
78 | bool update_bss) | |
1ea6f9c0 | 79 | { |
5ad11b50 EG |
80 | if (__ieee80211_recalc_txpower(sdata) || |
81 | (update_bss && ieee80211_sdata_running(sdata))) | |
d8675a63 | 82 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
7b7090b4 | 83 | BSS_CHANGED_TXPOWER); |
1ea6f9c0 | 84 | } |
c771c9d8 | 85 | |
62a40a15 | 86 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
87 | { |
88 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
89 | return 0; | |
90 | ||
91 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
92 | return IEEE80211_CONF_CHANGE_IDLE; | |
93 | } | |
94 | ||
62a40a15 | 95 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
96 | { |
97 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
98 | return 0; | |
99 | ||
3b24f4c6 | 100 | ieee80211_flush_queues(local, NULL, false); |
cc45ae54 JB |
101 | |
102 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
103 | return IEEE80211_CONF_CHANGE_IDLE; | |
104 | } | |
105 | ||
62a40a15 JB |
106 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
107 | bool force_active) | |
cc45ae54 | 108 | { |
1d5e1266 | 109 | bool working, scanning, active; |
cc45ae54 | 110 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 111 | |
0cd8080e | 112 | lockdep_assert_wiphy(local->hw.wiphy); |
cc45ae54 | 113 | |
62a40a15 JB |
114 | active = force_active || |
115 | !list_empty(&local->chanctx_list) || | |
116 | local->monitors; | |
cc45ae54 | 117 | |
1d5e1266 JB |
118 | working = !local->ops->remain_on_channel && |
119 | !list_empty(&local->roc_list); | |
cc45ae54 | 120 | |
f1e3e051 JB |
121 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
122 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 123 | |
cc45ae54 JB |
124 | if (working || scanning) |
125 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
126 | else | |
127 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
128 | ||
fd0f979a | 129 | if (active) |
cc45ae54 JB |
130 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
131 | else | |
132 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
133 | ||
134 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
135 | ||
fd0f979a | 136 | if (working || scanning || active) |
62a40a15 JB |
137 | return __ieee80211_idle_off(local); |
138 | return __ieee80211_idle_on(local); | |
139 | } | |
140 | ||
141 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
142 | { | |
143 | return __ieee80211_recalc_idle(local, true); | |
144 | } | |
145 | ||
146 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
147 | { | |
148 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
149 | if (change) |
150 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
151 | } |
152 | ||
3899ba90 | 153 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 154 | bool check_dup) |
478622e8 | 155 | { |
ac20976d HS |
156 | struct ieee80211_local *local = sdata->local; |
157 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
158 | u64 new, mask, tmp; |
159 | u8 *m; | |
160 | int ret = 0; | |
161 | ||
be0df01d JB |
162 | lockdep_assert_wiphy(local->hw.wiphy); |
163 | ||
478622e8 HS |
164 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) |
165 | return 0; | |
166 | ||
167 | m = addr; | |
168 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
169 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
170 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
171 | ||
172 | m = local->hw.wiphy->addr_mask; | |
173 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
174 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
175 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
176 | ||
31eba5bc FF |
177 | if (!check_dup) |
178 | return ret; | |
478622e8 | 179 | |
ac20976d HS |
180 | list_for_each_entry(iter, &local->interfaces, list) { |
181 | if (iter == sdata) | |
478622e8 HS |
182 | continue; |
183 | ||
3899ba90 | 184 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 185 | !(iter->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
478622e8 HS |
186 | continue; |
187 | ||
ac20976d | 188 | m = iter->vif.addr; |
478622e8 HS |
189 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
190 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
191 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
192 | ||
193 | if ((new & ~mask) != (tmp & ~mask)) { | |
194 | ret = -EINVAL; | |
195 | break; | |
196 | } | |
197 | } | |
478622e8 HS |
198 | |
199 | return ret; | |
200 | } | |
201 | ||
3c06e91b JP |
202 | static int ieee80211_can_powered_addr_change(struct ieee80211_sub_if_data *sdata) |
203 | { | |
204 | struct ieee80211_roc_work *roc; | |
205 | struct ieee80211_local *local = sdata->local; | |
206 | struct ieee80211_sub_if_data *scan_sdata; | |
207 | int ret = 0; | |
208 | ||
0cd8080e JB |
209 | lockdep_assert_wiphy(local->hw.wiphy); |
210 | ||
3c06e91b JP |
211 | /* To be the most flexible here we want to only limit changing the |
212 | * address if the specific interface is doing offchannel work or | |
213 | * scanning. | |
214 | */ | |
215 | if (netif_carrier_ok(sdata->dev)) | |
216 | return -EBUSY; | |
217 | ||
3c06e91b JP |
218 | /* First check no ROC work is happening on this iface */ |
219 | list_for_each_entry(roc, &local->roc_list, list) { | |
220 | if (roc->sdata != sdata) | |
221 | continue; | |
222 | ||
223 | if (roc->started) { | |
224 | ret = -EBUSY; | |
225 | goto unlock; | |
226 | } | |
227 | } | |
228 | ||
229 | /* And if this iface is scanning */ | |
230 | if (local->scanning) { | |
231 | scan_sdata = rcu_dereference_protected(local->scan_sdata, | |
0cd8080e | 232 | lockdep_is_held(&local->hw.wiphy->mtx)); |
3c06e91b JP |
233 | if (sdata == scan_sdata) |
234 | ret = -EBUSY; | |
235 | } | |
236 | ||
237 | switch (sdata->vif.type) { | |
238 | case NL80211_IFTYPE_STATION: | |
239 | case NL80211_IFTYPE_P2P_CLIENT: | |
240 | /* More interface types could be added here but changing the | |
241 | * address while powered makes the most sense in client modes. | |
242 | */ | |
243 | break; | |
244 | default: | |
ceb3d688 | 245 | ret = -EOPNOTSUPP; |
3c06e91b JP |
246 | } |
247 | ||
248 | unlock: | |
3c06e91b JP |
249 | return ret; |
250 | } | |
251 | ||
a26787aa JB |
252 | static int _ieee80211_change_mac(struct ieee80211_sub_if_data *sdata, |
253 | void *addr) | |
47846c9b | 254 | { |
3c06e91b | 255 | struct ieee80211_local *local = sdata->local; |
fc5f7577 | 256 | struct sockaddr *sa = addr; |
31eba5bc | 257 | bool check_dup = true; |
3c06e91b | 258 | bool live = false; |
47846c9b JB |
259 | int ret; |
260 | ||
3c06e91b JP |
261 | if (ieee80211_sdata_running(sdata)) { |
262 | ret = ieee80211_can_powered_addr_change(sdata); | |
263 | if (ret) | |
264 | return ret; | |
265 | ||
266 | live = true; | |
267 | } | |
47846c9b | 268 | |
31eba5bc | 269 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 270 | !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
271 | check_dup = false; |
272 | ||
3899ba90 | 273 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
274 | if (ret) |
275 | return ret; | |
276 | ||
3c06e91b JP |
277 | if (live) |
278 | drv_remove_interface(local, sdata); | |
a26787aa | 279 | ret = eth_mac_addr(sdata->dev, sa); |
47846c9b | 280 | |
d8787ec6 | 281 | if (ret == 0) { |
fc5f7577 | 282 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
d8787ec6 JB |
283 | ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); |
284 | } | |
47846c9b | 285 | |
3c06e91b JP |
286 | /* Regardless of eth_mac_addr() return we still want to add the |
287 | * interface back. This should not fail... | |
288 | */ | |
289 | if (live) | |
290 | WARN_ON(drv_add_interface(local, sdata)); | |
291 | ||
47846c9b JB |
292 | return ret; |
293 | } | |
294 | ||
a26787aa JB |
295 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
296 | { | |
297 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
298 | struct ieee80211_local *local = sdata->local; | |
299 | int ret; | |
300 | ||
74a7c93f JB |
301 | /* |
302 | * This happens during unregistration if there's a bond device | |
303 | * active (maybe other cases?) and we must get removed from it. | |
304 | * But we really don't care anymore if it's not registered now. | |
305 | */ | |
306 | if (!dev->ieee80211_ptr->registered) | |
307 | return 0; | |
308 | ||
a26787aa JB |
309 | wiphy_lock(local->hw.wiphy); |
310 | ret = _ieee80211_change_mac(sdata, addr); | |
311 | wiphy_unlock(local->hw.wiphy); | |
312 | ||
313 | return ret; | |
314 | } | |
315 | ||
0d143fe1 JB |
316 | static inline int identical_mac_addr_allowed(int type1, int type2) |
317 | { | |
318 | return type1 == NL80211_IFTYPE_MONITOR || | |
319 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
320 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
321 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
322 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || |
323 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
324 | (type2 == NL80211_IFTYPE_AP || | |
325 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
326 | } | |
327 | ||
87490f6d JB |
328 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
329 | enum nl80211_iftype iftype) | |
0d143fe1 | 330 | { |
b4a4bf5d | 331 | struct ieee80211_local *local = sdata->local; |
87490f6d | 332 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 333 | |
87490f6d | 334 | ASSERT_RTNL(); |
5435af6e | 335 | lockdep_assert_wiphy(local->hw.wiphy); |
0d143fe1 JB |
336 | |
337 | /* we hold the RTNL here so can safely walk the list */ | |
338 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 339 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
340 | /* |
341 | * Only OCB and monitor mode may coexist | |
342 | */ | |
343 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
344 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
345 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
346 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
347 | return -EBUSY; | |
348 | ||
0d143fe1 JB |
349 | /* |
350 | * Allow only a single IBSS interface to be up at any | |
351 | * time. This is restricted because beacon distribution | |
352 | * cannot work properly if both are in the same IBSS. | |
353 | * | |
354 | * To remove this restriction we'd have to disallow them | |
355 | * from setting the same SSID on different IBSS interfaces | |
356 | * belonging to the same hardware. Then, however, we're | |
357 | * faced with having to adopt two different TSF timers... | |
358 | */ | |
87490f6d | 359 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
360 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
361 | return -EBUSY; | |
73da7d5b SW |
362 | /* |
363 | * will not add another interface while any channel | |
364 | * switch is active. | |
365 | */ | |
d0a9123e | 366 | if (nsdata->vif.bss_conf.csa_active) |
73da7d5b | 367 | return -EBUSY; |
0d143fe1 JB |
368 | |
369 | /* | |
370 | * The remaining checks are only performed for interfaces | |
371 | * with the same MAC address. | |
372 | */ | |
371a255e JB |
373 | if (!ether_addr_equal(sdata->vif.addr, |
374 | nsdata->vif.addr)) | |
0d143fe1 JB |
375 | continue; |
376 | ||
377 | /* | |
378 | * check whether it may have the same address | |
379 | */ | |
87490f6d | 380 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
381 | nsdata->vif.type)) |
382 | return -ENOTUNIQ; | |
383 | ||
ae960ee9 JB |
384 | /* No support for VLAN with MLO yet */ |
385 | if (iftype == NL80211_IFTYPE_AP_VLAN && | |
f216033d FF |
386 | sdata->wdev.use_4addr && |
387 | nsdata->vif.type == NL80211_IFTYPE_AP && | |
388 | nsdata->vif.valid_links) | |
ae960ee9 JB |
389 | return -EOPNOTSUPP; |
390 | ||
0d143fe1 JB |
391 | /* |
392 | * can only add VLANs to enabled APs | |
393 | */ | |
87490f6d | 394 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
395 | nsdata->vif.type == NL80211_IFTYPE_AP) |
396 | sdata->bss = &nsdata->u.ap; | |
397 | } | |
398 | } | |
399 | ||
5435af6e | 400 | return ieee80211_check_combinations(sdata, NULL, 0, 0); |
87490f6d JB |
401 | } |
402 | ||
a9865538 JB |
403 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
404 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
405 | { |
406 | int n_queues = sdata->local->hw.queues; | |
407 | int i; | |
408 | ||
708d50ed AB |
409 | if (iftype == NL80211_IFTYPE_NAN) |
410 | return 0; | |
411 | ||
a9865538 | 412 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
413 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
414 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
415 | IEEE80211_INVAL_HW_QUEUE)) | |
416 | return -EINVAL; | |
417 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
418 | n_queues)) | |
419 | return -EINVAL; | |
420 | } | |
3a25a8c8 JB |
421 | } |
422 | ||
a9865538 JB |
423 | if ((iftype != NL80211_IFTYPE_AP && |
424 | iftype != NL80211_IFTYPE_P2P_GO && | |
425 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
30686bf7 | 426 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
3a25a8c8 JB |
427 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
428 | return 0; | |
429 | } | |
430 | ||
431 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
432 | return -EINVAL; | |
433 | ||
434 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
435 | return -EINVAL; | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
4b7afb52 | 440 | static int ieee80211_open(struct net_device *dev) |
6aea26ce | 441 | { |
4b7afb52 FF |
442 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
443 | int err; | |
444 | ||
445 | /* fail early if user set an invalid address */ | |
446 | if (!is_valid_ether_addr(dev->dev_addr)) | |
447 | return -EADDRNOTAVAIL; | |
448 | ||
7a53b71d | 449 | wiphy_lock(sdata->local->hw.wiphy); |
4b7afb52 FF |
450 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); |
451 | if (err) | |
7a53b71d | 452 | goto out; |
4b7afb52 | 453 | |
a05829a7 | 454 | err = ieee80211_do_open(&sdata->wdev, true); |
7a53b71d | 455 | out: |
a05829a7 JB |
456 | wiphy_unlock(sdata->local->hw.wiphy); |
457 | ||
458 | return err; | |
6aea26ce FF |
459 | } |
460 | ||
a05829a7 | 461 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_down) |
6aea26ce FF |
462 | { |
463 | struct ieee80211_local *local = sdata->local; | |
4b7afb52 FF |
464 | unsigned long flags; |
465 | struct sk_buff *skb, *tmp; | |
466 | u32 hw_reconf_flags = 0; | |
467 | int i, flushed; | |
468 | struct ps_data *ps; | |
469 | struct cfg80211_chan_def chandef; | |
470 | bool cancel_scan; | |
471 | struct cfg80211_nan_func *func; | |
6aea26ce | 472 | |
0cd8080e JB |
473 | lockdep_assert_wiphy(local->hw.wiphy); |
474 | ||
4b7afb52 | 475 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
3598cb6e | 476 | synchronize_rcu(); /* flush _ieee80211_wake_txqs() */ |
6aea26ce | 477 | |
4b7afb52 FF |
478 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
479 | if (cancel_scan) | |
480 | ieee80211_scan_cancel(local); | |
6aea26ce | 481 | |
4b7afb52 | 482 | ieee80211_roc_purge(local, sdata); |
6aea26ce | 483 | |
4b7afb52 FF |
484 | switch (sdata->vif.type) { |
485 | case NL80211_IFTYPE_STATION: | |
486 | ieee80211_mgd_stop(sdata); | |
487 | break; | |
488 | case NL80211_IFTYPE_ADHOC: | |
489 | ieee80211_ibss_stop(sdata); | |
490 | break; | |
491 | case NL80211_IFTYPE_MONITOR: | |
492 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
493 | break; | |
494 | list_del_rcu(&sdata->u.mntr.list); | |
495 | break; | |
496 | default: | |
497 | break; | |
498 | } | |
6aea26ce | 499 | |
4b7afb52 FF |
500 | /* |
501 | * Remove all stations associated with this interface. | |
502 | * | |
503 | * This must be done before calling ops->remove_interface() | |
504 | * because otherwise we can later invoke ops->sta_notify() | |
505 | * whenever the STAs are removed, and that invalidates driver | |
506 | * assumptions about always getting a vif pointer that is valid | |
507 | * (because if we remove a STA after ops->remove_interface() | |
508 | * the driver will have removed the vif info already!) | |
509 | * | |
70d9c599 | 510 | * For AP_VLANs stations may exist since there's nothing else that |
4b7afb52 FF |
511 | * would have removed them, but in other modes there shouldn't |
512 | * be any stations. | |
513 | */ | |
514 | flushed = sta_info_flush(sdata); | |
70d9c599 | 515 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && flushed > 0); |
6aea26ce | 516 | |
4b7afb52 FF |
517 | /* don't count this interface for allmulti while it is down */ |
518 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
519 | atomic_dec(&local->iff_allmultis); | |
6aea26ce | 520 | |
4b7afb52 FF |
521 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
522 | local->fif_pspoll--; | |
523 | local->fif_probe_req--; | |
524 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
525 | local->fif_probe_req--; | |
6aea26ce FF |
526 | } |
527 | ||
4b7afb52 FF |
528 | if (sdata->dev) { |
529 | netif_addr_lock_bh(sdata->dev); | |
530 | spin_lock_bh(&local->filter_lock); | |
531 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
532 | sdata->dev->addr_len); | |
533 | spin_unlock_bh(&local->filter_lock); | |
534 | netif_addr_unlock_bh(sdata->dev); | |
6aea26ce | 535 | } |
6aea26ce | 536 | |
4b7afb52 | 537 | del_timer_sync(&local->dynamic_ps_timer); |
9fa659f9 | 538 | wiphy_work_cancel(local->hw.wiphy, &local->dynamic_ps_enable_work); |
6aea26ce | 539 | |
f1871abd | 540 | WARN(ieee80211_vif_is_mld(&sdata->vif), |
d8787ec6 JB |
541 | "destroying interface with valid links 0x%04x\n", |
542 | sdata->vif.valid_links); | |
543 | ||
d0a9123e | 544 | sdata->vif.bss_conf.csa_active = false; |
4b7afb52 | 545 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
bfd8403a JB |
546 | sdata->deflink.u.mgd.csa_waiting_bcn = false; |
547 | if (sdata->deflink.csa_block_tx) { | |
4b7afb52 FF |
548 | ieee80211_wake_vif_queues(local, sdata, |
549 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
bfd8403a | 550 | sdata->deflink.csa_block_tx = false; |
6aea26ce FF |
551 | } |
552 | ||
d7074be6 | 553 | wiphy_work_cancel(local->hw.wiphy, &sdata->deflink.csa_finalize_work); |
b38579ae JB |
554 | wiphy_work_cancel(local->hw.wiphy, |
555 | &sdata->deflink.color_change_finalize_work); | |
766d2601 JB |
556 | wiphy_delayed_work_cancel(local->hw.wiphy, |
557 | &sdata->deflink.dfs_cac_timer_work); | |
85416a4f | 558 | |
4b7afb52 FF |
559 | if (sdata->wdev.cac_started) { |
560 | chandef = sdata->vif.bss_conf.chandef; | |
561 | WARN_ON(local->suspended); | |
d8675a63 | 562 | ieee80211_link_release_channel(&sdata->deflink); |
4b7afb52 FF |
563 | cfg80211_cac_event(sdata->dev, &chandef, |
564 | NL80211_RADAR_CAC_ABORTED, | |
565 | GFP_KERNEL); | |
566 | } | |
85416a4f | 567 | |
4b7afb52 | 568 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
4b7afb52 FF |
569 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); |
570 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
571 | /* remove all packets in parent bc_buf pointing to this dev */ | |
572 | ps = &sdata->bss->ps; | |
3a25a8c8 | 573 | |
4b7afb52 FF |
574 | spin_lock_irqsave(&ps->bc_buf.lock, flags); |
575 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
576 | if (skb->dev == sdata->dev) { | |
577 | __skb_unlink(skb, &ps->bc_buf); | |
578 | local->total_ps_buffered--; | |
579 | ieee80211_free_txskb(&local->hw, skb); | |
580 | } | |
581 | } | |
582 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
3a25a8c8 | 583 | } |
3a25a8c8 | 584 | |
4b7afb52 FF |
585 | if (going_down) |
586 | local->open_count--; | |
4b6f1dd6 | 587 | |
4b7afb52 FF |
588 | switch (sdata->vif.type) { |
589 | case NL80211_IFTYPE_AP_VLAN: | |
4b7afb52 | 590 | list_del(&sdata->u.vlan.list); |
d0a9123e | 591 | RCU_INIT_POINTER(sdata->vif.bss_conf.chanctx_conf, NULL); |
4b7afb52 FF |
592 | /* see comment in the default case below */ |
593 | ieee80211_free_keys(sdata, true); | |
594 | /* no need to tell driver */ | |
595 | break; | |
596 | case NL80211_IFTYPE_MONITOR: | |
597 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { | |
598 | local->cooked_mntrs--; | |
599 | break; | |
600 | } | |
685fb72b | 601 | |
4b7afb52 FF |
602 | local->monitors--; |
603 | if (local->monitors == 0) { | |
604 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; | |
605 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
606 | } | |
4b6f1dd6 | 607 | |
4b7afb52 FF |
608 | ieee80211_adjust_monitor_flags(sdata, -1); |
609 | break; | |
610 | case NL80211_IFTYPE_NAN: | |
611 | /* clean all the functions */ | |
612 | spin_lock_bh(&sdata->u.nan.func_lock); | |
4b6f1dd6 | 613 | |
4b7afb52 FF |
614 | idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) { |
615 | idr_remove(&sdata->u.nan.function_inst_ids, i); | |
616 | cfg80211_free_nan_func(func); | |
617 | } | |
618 | idr_destroy(&sdata->u.nan.function_inst_ids); | |
3a25a8c8 | 619 | |
4b7afb52 FF |
620 | spin_unlock_bh(&sdata->u.nan.func_lock); |
621 | break; | |
622 | case NL80211_IFTYPE_P2P_DEVICE: | |
623 | /* relies on synchronize_rcu() below */ | |
624 | RCU_INIT_POINTER(local->p2p_sdata, NULL); | |
625 | fallthrough; | |
626 | default: | |
16114496 | 627 | wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->work); |
4b7afb52 FF |
628 | /* |
629 | * When we get here, the interface is marked down. | |
630 | * Free the remaining keys, if there are any | |
631 | * (which can happen in AP mode if userspace sets | |
70d9c599 | 632 | * keys before the interface is operating) |
4b7afb52 FF |
633 | * |
634 | * Force the key freeing to always synchronize_net() | |
635 | * to wait for the RX path in case it is using this | |
636 | * interface enqueuing frames at this very time on | |
637 | * another CPU. | |
638 | */ | |
639 | ieee80211_free_keys(sdata, true); | |
640 | skb_queue_purge(&sdata->skb_queue); | |
f5a4c24e | 641 | skb_queue_purge(&sdata->status_queue); |
4b6f1dd6 JB |
642 | } |
643 | ||
4b7afb52 FF |
644 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
645 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
646 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
647 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
648 | if (info->control.vif == &sdata->vif) { | |
649 | __skb_unlink(skb, &local->pending[i]); | |
650 | ieee80211_free_txskb(&local->hw, skb); | |
651 | } | |
652 | } | |
3a25a8c8 | 653 | } |
4b7afb52 | 654 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
3a25a8c8 | 655 | |
4b7afb52 FF |
656 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
657 | ieee80211_txq_remove_vlan(local, sdata); | |
fab57a6c | 658 | |
4b7afb52 FF |
659 | sdata->bss = NULL; |
660 | ||
661 | if (local->open_count == 0) | |
662 | ieee80211_clear_tx_pending(local); | |
663 | ||
664 | sdata->vif.bss_conf.beacon_int = 0; | |
665 | ||
666 | /* | |
667 | * If the interface goes down while suspended, presumably because | |
668 | * the device was unplugged and that happens before our resume, | |
669 | * then the driver is already unconfigured and the remainder of | |
670 | * this function isn't needed. | |
671 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
672 | * memory allocated, it might expect teardown commands from | |
673 | * mac80211 here? | |
674 | */ | |
675 | if (local->suspended) { | |
676 | WARN_ON(local->wowlan); | |
6dd23603 | 677 | WARN_ON(rcu_access_pointer(local->monitor_sdata)); |
4b7afb52 | 678 | return; |
55de908a JB |
679 | } |
680 | ||
4b7afb52 FF |
681 | switch (sdata->vif.type) { |
682 | case NL80211_IFTYPE_AP_VLAN: | |
683 | break; | |
684 | case NL80211_IFTYPE_MONITOR: | |
685 | if (local->monitors == 0) | |
686 | ieee80211_del_virtual_monitor(local); | |
42bd20d9 | 687 | |
4b7afb52 | 688 | ieee80211_recalc_idle(local); |
4b6f1dd6 | 689 | |
4b7afb52 FF |
690 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
691 | break; | |
4b6f1dd6 | 692 | |
4b7afb52 FF |
693 | fallthrough; |
694 | default: | |
695 | if (going_down) | |
696 | drv_remove_interface(local, sdata); | |
697 | } | |
4b6f1dd6 | 698 | |
4b7afb52 | 699 | ieee80211_recalc_ps(local); |
8b305780 | 700 | |
4b7afb52 | 701 | if (cancel_scan) |
20171251 | 702 | wiphy_delayed_work_flush(local->hw.wiphy, &local->scan_work); |
4b6f1dd6 | 703 | |
4b7afb52 FF |
704 | if (local->open_count == 0) { |
705 | ieee80211_stop_device(local); | |
706 | ||
707 | /* no reconfiguring after stop! */ | |
8b305780 JB |
708 | return; |
709 | } | |
4b6f1dd6 | 710 | |
4b7afb52 FF |
711 | /* do after stop to avoid reconfiguring when we stop anyway */ |
712 | ieee80211_configure_filter(local); | |
713 | ieee80211_hw_config(local, hw_reconf_flags); | |
8b305780 | 714 | |
4b7afb52 FF |
715 | if (local->monitors == local->open_count) |
716 | ieee80211_add_virtual_monitor(local); | |
717 | } | |
4b6f1dd6 | 718 | |
17196425 JC |
719 | static void ieee80211_stop_mbssid(struct ieee80211_sub_if_data *sdata) |
720 | { | |
721 | struct ieee80211_sub_if_data *tx_sdata, *non_tx_sdata, *tmp_sdata; | |
722 | struct ieee80211_vif *tx_vif = sdata->vif.mbssid_tx_vif; | |
723 | ||
724 | if (!tx_vif) | |
725 | return; | |
726 | ||
727 | tx_sdata = vif_to_sdata(tx_vif); | |
728 | sdata->vif.mbssid_tx_vif = NULL; | |
729 | ||
730 | list_for_each_entry_safe(non_tx_sdata, tmp_sdata, | |
731 | &tx_sdata->local->interfaces, list) { | |
732 | if (non_tx_sdata != sdata && non_tx_sdata != tx_sdata && | |
733 | non_tx_sdata->vif.mbssid_tx_vif == tx_vif && | |
734 | ieee80211_sdata_running(non_tx_sdata)) { | |
735 | non_tx_sdata->vif.mbssid_tx_vif = NULL; | |
736 | dev_close(non_tx_sdata->wdev.netdev); | |
737 | } | |
738 | } | |
739 | ||
740 | if (sdata != tx_sdata && ieee80211_sdata_running(tx_sdata)) { | |
741 | tx_sdata->vif.mbssid_tx_vif = NULL; | |
742 | dev_close(tx_sdata->wdev.netdev); | |
743 | } | |
744 | } | |
745 | ||
4b7afb52 FF |
746 | static int ieee80211_stop(struct net_device *dev) |
747 | { | |
748 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
55de908a | 749 | |
17196425 | 750 | /* close dependent VLAN and MBSSID interfaces before locking wiphy */ |
d5befb22 JB |
751 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
752 | struct ieee80211_sub_if_data *vlan, *tmpsdata; | |
753 | ||
754 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, | |
755 | u.vlan.list) | |
756 | dev_close(vlan->dev); | |
17196425 JC |
757 | |
758 | ieee80211_stop_mbssid(sdata); | |
d5befb22 JB |
759 | } |
760 | ||
a05829a7 | 761 | wiphy_lock(sdata->local->hw.wiphy); |
7206a948 JB |
762 | wiphy_work_cancel(sdata->local->hw.wiphy, &sdata->activate_links_work); |
763 | ||
4b7afb52 | 764 | ieee80211_do_stop(sdata, true); |
a05829a7 | 765 | wiphy_unlock(sdata->local->hw.wiphy); |
4b6f1dd6 | 766 | |
4b7afb52 | 767 | return 0; |
4b6f1dd6 JB |
768 | } |
769 | ||
4b7afb52 | 770 | static void ieee80211_set_multicast_list(struct net_device *dev) |
87490f6d | 771 | { |
4b7afb52 | 772 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
87490f6d | 773 | struct ieee80211_local *local = sdata->local; |
4b7afb52 | 774 | int allmulti, sdata_allmulti; |
87490f6d | 775 | |
4b7afb52 FF |
776 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
777 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
665c93a9 | 778 | |
4b7afb52 FF |
779 | if (allmulti != sdata_allmulti) { |
780 | if (dev->flags & IFF_ALLMULTI) | |
781 | atomic_inc(&local->iff_allmultis); | |
782 | else | |
783 | atomic_dec(&local->iff_allmultis); | |
784 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
785 | } | |
665c93a9 | 786 | |
4b7afb52 FF |
787 | spin_lock_bh(&local->filter_lock); |
788 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); | |
789 | spin_unlock_bh(&local->filter_lock); | |
a6add8be | 790 | wiphy_work_queue(local->hw.wiphy, &local->reconfig_filter); |
4b7afb52 | 791 | } |
665c93a9 | 792 | |
4b7afb52 FF |
793 | /* |
794 | * Called when the netdev is removed or, by the code below, before | |
795 | * the interface type changes. | |
796 | */ | |
797 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) | |
798 | { | |
4b7afb52 FF |
799 | /* free extra data */ |
800 | ieee80211_free_keys(sdata, false); | |
f9dca80b | 801 | |
4b7afb52 | 802 | ieee80211_debugfs_remove_netdev(sdata); |
0d143fe1 | 803 | |
3a11ce08 | 804 | ieee80211_destroy_frag_cache(&sdata->frags); |
0d143fe1 | 805 | |
4b7afb52 FF |
806 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
807 | ieee80211_mesh_teardown_sdata(sdata); | |
b2e8434f JB |
808 | |
809 | ieee80211_vif_clear_links(sdata); | |
810 | ieee80211_link_stop(&sdata->deflink); | |
4b7afb52 | 811 | } |
0d143fe1 | 812 | |
4b7afb52 FF |
813 | static void ieee80211_uninit(struct net_device *dev) |
814 | { | |
815 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
816 | } | |
075e0847 | 817 | |
4b7afb52 FF |
818 | static void |
819 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
820 | { | |
6401297e | 821 | dev_fetch_sw_netstats(stats, dev->tstats); |
4b7afb52 | 822 | } |
e3b90ca2 | 823 | |
61587f15 FF |
824 | static int ieee80211_netdev_setup_tc(struct net_device *dev, |
825 | enum tc_setup_type type, void *type_data) | |
826 | { | |
827 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
828 | struct ieee80211_local *local = sdata->local; | |
829 | ||
830 | return drv_net_setup_tc(local, sdata, dev, type, type_data); | |
831 | } | |
832 | ||
4b7afb52 FF |
833 | static const struct net_device_ops ieee80211_dataif_ops = { |
834 | .ndo_open = ieee80211_open, | |
835 | .ndo_stop = ieee80211_stop, | |
836 | .ndo_uninit = ieee80211_uninit, | |
837 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
838 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
839 | .ndo_set_mac_address = ieee80211_change_mac, | |
4b7afb52 | 840 | .ndo_get_stats64 = ieee80211_get_stats64, |
61587f15 | 841 | .ndo_setup_tc = ieee80211_netdev_setup_tc, |
4b7afb52 | 842 | }; |
e3b90ca2 | 843 | |
4b7afb52 FF |
844 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
845 | struct sk_buff *skb, | |
846 | struct net_device *sb_dev) | |
847 | { | |
848 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
849 | struct ieee80211_local *local = sdata->local; | |
850 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
851 | struct ieee80211_hdr *hdr; | |
852 | int len_rthdr; | |
90e8f58d | 853 | |
4b7afb52 FF |
854 | if (local->hw.queues < IEEE80211_NUM_ACS) |
855 | return 0; | |
0d143fe1 | 856 | |
4b7afb52 FF |
857 | /* reset flags and info before parsing radiotap header */ |
858 | memset(info, 0, sizeof(*info)); | |
59034591 | 859 | |
4b7afb52 FF |
860 | if (!ieee80211_parse_tx_radiotap(skb, dev)) |
861 | return 0; /* doesn't matter, frame will be dropped */ | |
0d143fe1 | 862 | |
4b7afb52 FF |
863 | len_rthdr = ieee80211_get_radiotap_len(skb->data); |
864 | hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr); | |
865 | if (skb->len < len_rthdr + 2 || | |
866 | skb->len < len_rthdr + ieee80211_hdrlen(hdr->frame_control)) | |
867 | return 0; /* doesn't matter, frame will be dropped */ | |
2d2080c3 | 868 | |
4b7afb52 FF |
869 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
870 | } | |
0d143fe1 | 871 | |
4b7afb52 FF |
872 | static const struct net_device_ops ieee80211_monitorif_ops = { |
873 | .ndo_open = ieee80211_open, | |
874 | .ndo_stop = ieee80211_stop, | |
875 | .ndo_uninit = ieee80211_uninit, | |
876 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
877 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
878 | .ndo_set_mac_address = ieee80211_change_mac, | |
879 | .ndo_select_queue = ieee80211_monitor_select_queue, | |
880 | .ndo_get_stats64 = ieee80211_get_stats64, | |
881 | }; | |
0d143fe1 | 882 | |
d787a3e3 FF |
883 | static int ieee80211_netdev_fill_forward_path(struct net_device_path_ctx *ctx, |
884 | struct net_device_path *path) | |
885 | { | |
886 | struct ieee80211_sub_if_data *sdata; | |
887 | struct ieee80211_local *local; | |
888 | struct sta_info *sta; | |
889 | int ret = -ENOENT; | |
890 | ||
891 | sdata = IEEE80211_DEV_TO_SUB_IF(ctx->dev); | |
892 | local = sdata->local; | |
893 | ||
894 | if (!local->ops->net_fill_forward_path) | |
895 | return -EOPNOTSUPP; | |
896 | ||
897 | rcu_read_lock(); | |
898 | switch (sdata->vif.type) { | |
899 | case NL80211_IFTYPE_AP_VLAN: | |
900 | sta = rcu_dereference(sdata->u.vlan.sta); | |
901 | if (sta) | |
902 | break; | |
903 | if (sdata->wdev.use_4addr) | |
904 | goto out; | |
905 | if (is_multicast_ether_addr(ctx->daddr)) | |
906 | goto out; | |
907 | sta = sta_info_get_bss(sdata, ctx->daddr); | |
908 | break; | |
909 | case NL80211_IFTYPE_AP: | |
910 | if (is_multicast_ether_addr(ctx->daddr)) | |
911 | goto out; | |
912 | sta = sta_info_get(sdata, ctx->daddr); | |
913 | break; | |
914 | case NL80211_IFTYPE_STATION: | |
915 | if (sdata->wdev.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) { | |
916 | sta = sta_info_get(sdata, ctx->daddr); | |
917 | if (sta && test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { | |
918 | if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) | |
919 | goto out; | |
920 | ||
921 | break; | |
922 | } | |
923 | } | |
924 | ||
bfd8403a | 925 | sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid); |
d787a3e3 FF |
926 | break; |
927 | default: | |
928 | goto out; | |
929 | } | |
930 | ||
931 | if (!sta) | |
932 | goto out; | |
933 | ||
934 | ret = drv_net_fill_forward_path(local, sdata, &sta->sta, ctx, path); | |
935 | out: | |
936 | rcu_read_unlock(); | |
937 | ||
938 | return ret; | |
939 | } | |
940 | ||
4b7afb52 FF |
941 | static const struct net_device_ops ieee80211_dataif_8023_ops = { |
942 | .ndo_open = ieee80211_open, | |
943 | .ndo_stop = ieee80211_stop, | |
944 | .ndo_uninit = ieee80211_uninit, | |
945 | .ndo_start_xmit = ieee80211_subif_start_xmit_8023, | |
946 | .ndo_set_rx_mode = ieee80211_set_multicast_list, | |
947 | .ndo_set_mac_address = ieee80211_change_mac, | |
4b7afb52 | 948 | .ndo_get_stats64 = ieee80211_get_stats64, |
d787a3e3 | 949 | .ndo_fill_forward_path = ieee80211_netdev_fill_forward_path, |
61587f15 | 950 | .ndo_setup_tc = ieee80211_netdev_setup_tc, |
4b7afb52 | 951 | }; |
1be7fe8d | 952 | |
80a915ec | 953 | static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype) |
4b7afb52 FF |
954 | { |
955 | switch (iftype) { | |
956 | /* P2P GO and client are mapped to AP/STATION types */ | |
957 | case NL80211_IFTYPE_AP: | |
958 | case NL80211_IFTYPE_STATION: | |
959 | return true; | |
f64331d5 | 960 | default: |
4b7afb52 | 961 | return false; |
0d143fe1 | 962 | } |
4b7afb52 | 963 | } |
0d143fe1 | 964 | |
4b7afb52 FF |
965 | static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdata) |
966 | { | |
967 | struct ieee80211_local *local = sdata->local; | |
968 | u32 flags; | |
965bedad | 969 | |
4b7afb52 | 970 | flags = sdata->vif.offload_flags; |
2b730daa | 971 | |
4b7afb52 | 972 | if (ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) && |
80a915ec | 973 | ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { |
4b7afb52 | 974 | flags |= IEEE80211_OFFLOAD_ENCAP_ENABLED; |
2b730daa | 975 | |
4b7afb52 FF |
976 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG) && |
977 | local->hw.wiphy->frag_threshold != (u32)-1) | |
978 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
2b730daa | 979 | |
4b7afb52 FF |
980 | if (local->monitors) |
981 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
982 | } else { | |
983 | flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED; | |
2b730daa | 984 | } |
0d143fe1 | 985 | |
80a915ec FF |
986 | if (ieee80211_hw_check(&local->hw, SUPPORTS_RX_DECAP_OFFLOAD) && |
987 | ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) { | |
988 | flags |= IEEE80211_OFFLOAD_DECAP_ENABLED; | |
989 | ||
55f8205e S |
990 | if (local->monitors && |
991 | !ieee80211_hw_check(&local->hw, SUPPORTS_CONC_MON_RX_DECAP)) | |
80a915ec FF |
992 | flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; |
993 | } else { | |
994 | flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED; | |
995 | } | |
996 | ||
4b7afb52 FF |
997 | if (sdata->vif.offload_flags == flags) |
998 | return false; | |
999 | ||
1000 | sdata->vif.offload_flags = flags; | |
80a915ec | 1001 | ieee80211_check_fast_rx_iface(sdata); |
4b7afb52 | 1002 | return true; |
0d143fe1 JB |
1003 | } |
1004 | ||
4b7afb52 | 1005 | static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata) |
0d143fe1 | 1006 | { |
4b7afb52 FF |
1007 | struct ieee80211_local *local = sdata->local; |
1008 | struct ieee80211_sub_if_data *bss = sdata; | |
1009 | bool enabled; | |
34d4bc4d | 1010 | |
4b7afb52 FF |
1011 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
1012 | if (!sdata->bss) | |
1013 | return; | |
34d4bc4d | 1014 | |
4b7afb52 FF |
1015 | bss = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); |
1016 | } | |
34d4bc4d | 1017 | |
4b7afb52 | 1018 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) || |
80a915ec | 1019 | !ieee80211_iftype_supports_hdr_offload(bss->vif.type)) |
4b7afb52 | 1020 | return; |
34d4bc4d | 1021 | |
4b7afb52 FF |
1022 | enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED; |
1023 | if (sdata->wdev.use_4addr && | |
1024 | !(bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_4ADDR)) | |
1025 | enabled = false; | |
0d143fe1 | 1026 | |
4b7afb52 FF |
1027 | sdata->dev->netdev_ops = enabled ? &ieee80211_dataif_8023_ops : |
1028 | &ieee80211_dataif_ops; | |
1029 | } | |
c29acf20 | 1030 | |
4b7afb52 FF |
1031 | static void ieee80211_recalc_sdata_offload(struct ieee80211_sub_if_data *sdata) |
1032 | { | |
1033 | struct ieee80211_local *local = sdata->local; | |
1034 | struct ieee80211_sub_if_data *vsdata; | |
352ffad6 | 1035 | |
4b7afb52 FF |
1036 | if (ieee80211_set_sdata_offload_flags(sdata)) { |
1037 | drv_update_vif_offload(local, sdata); | |
1038 | ieee80211_set_vif_encap_ops(sdata); | |
1039 | } | |
0d143fe1 | 1040 | |
4b7afb52 FF |
1041 | list_for_each_entry(vsdata, &local->interfaces, list) { |
1042 | if (vsdata->vif.type != NL80211_IFTYPE_AP_VLAN || | |
1043 | vsdata->bss != &sdata->u.ap) | |
1044 | continue; | |
af6b6374 | 1045 | |
4b7afb52 | 1046 | ieee80211_set_vif_encap_ops(vsdata); |
8ffcc704 | 1047 | } |
4b7afb52 | 1048 | } |
cd7760e6 | 1049 | |
4b7afb52 FF |
1050 | void ieee80211_recalc_offload(struct ieee80211_local *local) |
1051 | { | |
1052 | struct ieee80211_sub_if_data *sdata; | |
0d143fe1 | 1053 | |
4b7afb52 FF |
1054 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD)) |
1055 | return; | |
0d143fe1 | 1056 | |
be0df01d | 1057 | lockdep_assert_wiphy(local->hw.wiphy); |
e3b90ca2 | 1058 | |
4b7afb52 FF |
1059 | list_for_each_entry(sdata, &local->interfaces, list) { |
1060 | if (!ieee80211_sdata_running(sdata)) | |
1061 | continue; | |
1062 | ||
1063 | ieee80211_recalc_sdata_offload(sdata); | |
f142c6b9 | 1064 | } |
4b7afb52 | 1065 | } |
0d143fe1 | 1066 | |
4b7afb52 FF |
1067 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
1068 | const int offset) | |
1069 | { | |
1070 | struct ieee80211_local *local = sdata->local; | |
1071 | u32 flags = sdata->u.mntr.flags; | |
59af6928 | 1072 | |
4b7afb52 FF |
1073 | #define ADJUST(_f, _s) do { \ |
1074 | if (flags & MONITOR_FLAG_##_f) \ | |
1075 | local->fif_##_s += offset; \ | |
1076 | } while (0) | |
04ecd257 | 1077 | |
4b7afb52 FF |
1078 | ADJUST(FCSFAIL, fcsfail); |
1079 | ADJUST(PLCPFAIL, plcpfail); | |
1080 | ADJUST(CONTROL, control); | |
1081 | ADJUST(CONTROL, pspoll); | |
1082 | ADJUST(OTHER_BSS, other_bss); | |
164eb02d | 1083 | |
4b7afb52 FF |
1084 | #undef ADJUST |
1085 | } | |
1086 | ||
1087 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) | |
1088 | { | |
1089 | struct ieee80211_local *local = sdata->local; | |
1090 | int i; | |
1091 | ||
1092 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
1093 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) | |
1094 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
1095 | else if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1096 | sdata->vif.hw_queue[i] = i; | |
1097 | else | |
1098 | sdata->vif.hw_queue[i] = 0; | |
164eb02d | 1099 | } |
4b7afb52 FF |
1100 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
1101 | } | |
164eb02d | 1102 | |
8e14130d JB |
1103 | static void ieee80211_sdata_init(struct ieee80211_local *local, |
1104 | struct ieee80211_sub_if_data *sdata) | |
1105 | { | |
1106 | sdata->local = local; | |
1107 | ||
1108 | /* | |
1109 | * Initialize the default link, so we can use link_id 0 for non-MLD, | |
1110 | * and that continues to work for non-MLD-aware drivers that use just | |
1111 | * vif.bss_conf instead of vif.link_conf. | |
1112 | * | |
1113 | * Note that we never change this, so if link ID 0 isn't used in an | |
1114 | * MLD connection, we get a separate allocation for it. | |
1115 | */ | |
d8787ec6 | 1116 | ieee80211_link_init(sdata, -1, &sdata->deflink, &sdata->vif.bss_conf); |
8e14130d JB |
1117 | } |
1118 | ||
4b7afb52 FF |
1119 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
1120 | { | |
1121 | struct ieee80211_sub_if_data *sdata; | |
1122 | int ret; | |
0d143fe1 | 1123 | |
4b7afb52 FF |
1124 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
1125 | return 0; | |
397a7a24 | 1126 | |
4b7afb52 | 1127 | ASSERT_RTNL(); |
6dd23603 | 1128 | lockdep_assert_wiphy(local->hw.wiphy); |
0d143fe1 | 1129 | |
4b7afb52 FF |
1130 | if (local->monitor_sdata) |
1131 | return 0; | |
0d143fe1 | 1132 | |
4b7afb52 FF |
1133 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); |
1134 | if (!sdata) | |
1135 | return -ENOMEM; | |
0d143fe1 | 1136 | |
4b7afb52 | 1137 | /* set up data */ |
4b7afb52 FF |
1138 | sdata->vif.type = NL80211_IFTYPE_MONITOR; |
1139 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
1140 | wiphy_name(local->hw.wiphy)); | |
1141 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; | |
a7614b48 | 1142 | sdata->wdev.wiphy = local->hw.wiphy; |
0d143fe1 | 1143 | |
8e14130d JB |
1144 | ieee80211_sdata_init(local, sdata); |
1145 | ||
4b7afb52 | 1146 | ieee80211_set_default_queues(sdata); |
167e33f4 | 1147 | |
4b7afb52 FF |
1148 | ret = drv_add_interface(local, sdata); |
1149 | if (WARN_ON(ret)) { | |
1150 | /* ok .. stupid driver, it asked for this! */ | |
1151 | kfree(sdata); | |
1152 | return ret; | |
1153 | } | |
1154 | ||
bdeca45a BA |
1155 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
1156 | ||
4b7afb52 FF |
1157 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
1158 | if (ret) { | |
1159 | kfree(sdata); | |
1160 | return ret; | |
0d143fe1 JB |
1161 | } |
1162 | ||
4b7afb52 FF |
1163 | mutex_lock(&local->iflist_mtx); |
1164 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
1165 | mutex_unlock(&local->iflist_mtx); | |
1166 | ||
d8675a63 | 1167 | ret = ieee80211_link_use_channel(&sdata->deflink, &local->monitor_chandef, |
b4f85443 | 1168 | IEEE80211_CHANCTX_EXCLUSIVE); |
4b7afb52 FF |
1169 | if (ret) { |
1170 | mutex_lock(&local->iflist_mtx); | |
1171 | RCU_INIT_POINTER(local->monitor_sdata, NULL); | |
1172 | mutex_unlock(&local->iflist_mtx); | |
1173 | synchronize_net(); | |
1174 | drv_remove_interface(local, sdata); | |
1175 | kfree(sdata); | |
1176 | return ret; | |
5061b0c2 | 1177 | } |
075e0847 | 1178 | |
4b7afb52 | 1179 | skb_queue_head_init(&sdata->skb_queue); |
f5a4c24e | 1180 | skb_queue_head_init(&sdata->status_queue); |
16114496 | 1181 | wiphy_work_init(&sdata->work, ieee80211_iface_work); |
53168215 | 1182 | |
4b7afb52 FF |
1183 | return 0; |
1184 | } | |
ba8c3d6f | 1185 | |
4b7afb52 FF |
1186 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
1187 | { | |
1188 | struct ieee80211_sub_if_data *sdata; | |
b2c0958b | 1189 | |
4b7afb52 FF |
1190 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
1191 | return; | |
5c21e810 | 1192 | |
4b7afb52 | 1193 | ASSERT_RTNL(); |
6dd23603 | 1194 | lockdep_assert_wiphy(local->hw.wiphy); |
4b7afb52 FF |
1195 | |
1196 | mutex_lock(&local->iflist_mtx); | |
1197 | ||
1198 | sdata = rcu_dereference_protected(local->monitor_sdata, | |
1199 | lockdep_is_held(&local->iflist_mtx)); | |
1200 | if (!sdata) { | |
1201 | mutex_unlock(&local->iflist_mtx); | |
b2c0958b JB |
1202 | return; |
1203 | } | |
1204 | ||
4b7afb52 FF |
1205 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
1206 | mutex_unlock(&local->iflist_mtx); | |
1207 | ||
1208 | synchronize_net(); | |
1209 | ||
d8675a63 | 1210 | ieee80211_link_release_channel(&sdata->deflink); |
4b7afb52 FF |
1211 | |
1212 | drv_remove_interface(local, sdata); | |
1213 | ||
1214 | kfree(sdata); | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * NOTE: Be very careful when changing this function, it must NOT return | |
1219 | * an error on interface type changes that have been pre-checked, so most | |
1220 | * checks should be in ieee80211_check_concurrent_iface. | |
1221 | */ | |
1222 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) | |
1223 | { | |
1224 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); | |
1225 | struct net_device *dev = wdev->netdev; | |
1226 | struct ieee80211_local *local = sdata->local; | |
15ddba5f | 1227 | u64 changed = 0; |
4b7afb52 FF |
1228 | int res; |
1229 | u32 hw_reconf_flags = 0; | |
1230 | ||
2a8b665e JB |
1231 | lockdep_assert_wiphy(local->hw.wiphy); |
1232 | ||
b2c0958b | 1233 | switch (sdata->vif.type) { |
4b7afb52 FF |
1234 | case NL80211_IFTYPE_AP_VLAN: { |
1235 | struct ieee80211_sub_if_data *master; | |
1236 | ||
1237 | if (!sdata->bss) | |
1238 | return -ENOLINK; | |
b2c0958b | 1239 | |
4b7afb52 | 1240 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
31eba5bc | 1241 | |
4b7afb52 FF |
1242 | master = container_of(sdata->bss, |
1243 | struct ieee80211_sub_if_data, u.ap); | |
1244 | sdata->control_port_protocol = | |
1245 | master->control_port_protocol; | |
1246 | sdata->control_port_no_encrypt = | |
1247 | master->control_port_no_encrypt; | |
1248 | sdata->control_port_over_nl80211 = | |
1249 | master->control_port_over_nl80211; | |
1250 | sdata->control_port_no_preauth = | |
1251 | master->control_port_no_preauth; | |
1252 | sdata->vif.cab_queue = master->vif.cab_queue; | |
1253 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
1254 | sizeof(sdata->vif.hw_queue)); | |
1255 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; | |
b2c0958b | 1256 | |
4b7afb52 FF |
1257 | sdata->crypto_tx_tailroom_needed_cnt += |
1258 | master->crypto_tx_tailroom_needed_cnt; | |
b2c0958b | 1259 | |
4b7afb52 FF |
1260 | break; |
1261 | } | |
1262 | case NL80211_IFTYPE_AP: | |
1263 | sdata->bss = &sdata->u.ap; | |
1264 | break; | |
1265 | case NL80211_IFTYPE_MESH_POINT: | |
1266 | case NL80211_IFTYPE_STATION: | |
1267 | case NL80211_IFTYPE_MONITOR: | |
1268 | case NL80211_IFTYPE_ADHOC: | |
1269 | case NL80211_IFTYPE_P2P_DEVICE: | |
1270 | case NL80211_IFTYPE_OCB: | |
1271 | case NL80211_IFTYPE_NAN: | |
1272 | /* no special treatment */ | |
1273 | break; | |
1274 | case NL80211_IFTYPE_UNSPECIFIED: | |
1275 | case NUM_NL80211_IFTYPES: | |
1276 | case NL80211_IFTYPE_P2P_CLIENT: | |
1277 | case NL80211_IFTYPE_P2P_GO: | |
70d9c599 | 1278 | case NL80211_IFTYPE_WDS: |
4b7afb52 FF |
1279 | /* cannot happen */ |
1280 | WARN_ON(1); | |
1281 | break; | |
1282 | } | |
46238845 | 1283 | |
b2c0958b | 1284 | if (local->open_count == 0) { |
c4fdb081 JB |
1285 | /* here we can consider everything in good order (again) */ |
1286 | local->reconfig_failure = false; | |
1287 | ||
4b7afb52 FF |
1288 | res = drv_start(local); |
1289 | if (res) | |
1290 | goto err_del_bss; | |
1291 | /* we're brought up, everything changes */ | |
1292 | hw_reconf_flags = ~0; | |
1293 | ieee80211_led_radio(local, true); | |
1294 | ieee80211_mod_tpt_led_trig(local, | |
1295 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
b2c0958b JB |
1296 | } |
1297 | ||
4b7afb52 FF |
1298 | /* |
1299 | * Copy the hopefully now-present MAC address to | |
1300 | * this interface, if it has the special null one. | |
1301 | */ | |
1302 | if (dev && is_zero_ether_addr(dev->dev_addr)) { | |
de1352ea | 1303 | eth_hw_addr_set(dev, local->hw.wiphy->perm_addr); |
4b7afb52 | 1304 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); |
34d4bc4d | 1305 | |
4b7afb52 FF |
1306 | if (!is_valid_ether_addr(dev->dev_addr)) { |
1307 | res = -EADDRNOTAVAIL; | |
1308 | goto err_stop; | |
1309 | } | |
1310 | } | |
34d4bc4d | 1311 | |
4b7afb52 FF |
1312 | switch (sdata->vif.type) { |
1313 | case NL80211_IFTYPE_AP_VLAN: | |
1314 | /* no need to tell driver, but set carrier and chanctx */ | |
bfd8403a | 1315 | if (sdata->bss->active) { |
d8675a63 | 1316 | ieee80211_link_vlan_copy_chanctx(&sdata->deflink); |
4b7afb52 FF |
1317 | netif_carrier_on(dev); |
1318 | ieee80211_set_vif_encap_ops(sdata); | |
1319 | } else { | |
1320 | netif_carrier_off(dev); | |
1321 | } | |
1322 | break; | |
1323 | case NL80211_IFTYPE_MONITOR: | |
1324 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { | |
1325 | local->cooked_mntrs++; | |
1326 | break; | |
1327 | } | |
5061b0c2 | 1328 | |
4b7afb52 FF |
1329 | if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { |
1330 | res = drv_add_interface(local, sdata); | |
1331 | if (res) | |
1332 | goto err_stop; | |
1333 | } else if (local->monitors == 0 && local->open_count == 0) { | |
1334 | res = ieee80211_add_virtual_monitor(local); | |
1335 | if (res) | |
1336 | goto err_stop; | |
1337 | } | |
0d143fe1 | 1338 | |
4b7afb52 FF |
1339 | /* must be before the call to ieee80211_configure_filter */ |
1340 | local->monitors++; | |
1341 | if (local->monitors == 1) { | |
1342 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; | |
1343 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
1344 | } | |
0d143fe1 | 1345 | |
4b7afb52 FF |
1346 | ieee80211_adjust_monitor_flags(sdata, 1); |
1347 | ieee80211_configure_filter(local); | |
1348 | ieee80211_recalc_offload(local); | |
4b7afb52 | 1349 | ieee80211_recalc_idle(local); |
0d143fe1 | 1350 | |
4b7afb52 FF |
1351 | netif_carrier_on(dev); |
1352 | break; | |
1353 | default: | |
1354 | if (coming_up) { | |
1355 | ieee80211_del_virtual_monitor(local); | |
1356 | ieee80211_set_sdata_offload_flags(sdata); | |
0d143fe1 | 1357 | |
4b7afb52 FF |
1358 | res = drv_add_interface(local, sdata); |
1359 | if (res) | |
1360 | goto err_stop; | |
0d143fe1 | 1361 | |
4b7afb52 FF |
1362 | ieee80211_set_vif_encap_ops(sdata); |
1363 | res = ieee80211_check_queues(sdata, | |
1364 | ieee80211_vif_type_p2p(&sdata->vif)); | |
1365 | if (res) | |
1366 | goto err_del_interface; | |
1367 | } | |
f0706e82 | 1368 | |
4b7afb52 FF |
1369 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1370 | local->fif_pspoll++; | |
1371 | local->fif_probe_req++; | |
75636525 | 1372 | |
4b7afb52 FF |
1373 | ieee80211_configure_filter(local); |
1374 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
1375 | local->fif_probe_req++; | |
1376 | } | |
aee14ceb | 1377 | |
4b7afb52 FF |
1378 | if (sdata->vif.probe_req_reg) |
1379 | drv_config_iface_filter(local, sdata, | |
1380 | FIF_PROBE_REQ, | |
1381 | FIF_PROBE_REQ); | |
11a843b7 | 1382 | |
4b7afb52 FF |
1383 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && |
1384 | sdata->vif.type != NL80211_IFTYPE_NAN) | |
1385 | changed |= ieee80211_reset_erp_info(sdata); | |
d8675a63 JB |
1386 | ieee80211_link_info_change_notify(sdata, &sdata->deflink, |
1387 | changed); | |
f0706e82 | 1388 | |
4b7afb52 FF |
1389 | switch (sdata->vif.type) { |
1390 | case NL80211_IFTYPE_STATION: | |
1391 | case NL80211_IFTYPE_ADHOC: | |
1392 | case NL80211_IFTYPE_AP: | |
1393 | case NL80211_IFTYPE_MESH_POINT: | |
1394 | case NL80211_IFTYPE_OCB: | |
1395 | netif_carrier_off(dev); | |
1396 | break; | |
4b7afb52 FF |
1397 | case NL80211_IFTYPE_P2P_DEVICE: |
1398 | case NL80211_IFTYPE_NAN: | |
1399 | break; | |
1400 | default: | |
1401 | /* not reached */ | |
1402 | WARN_ON(1); | |
1403 | } | |
f142c6b9 | 1404 | |
4b7afb52 FF |
1405 | /* |
1406 | * Set default queue parameters so drivers don't | |
1407 | * need to initialise the hardware if the hardware | |
1408 | * doesn't start up with sane defaults. | |
1409 | * Enable QoS for anything but station interfaces. | |
1410 | */ | |
b3e2130b | 1411 | ieee80211_set_wmm_default(&sdata->deflink, true, |
4b7afb52 FF |
1412 | sdata->vif.type != NL80211_IFTYPE_STATION); |
1413 | } | |
cf0277e7 | 1414 | |
4b7afb52 | 1415 | switch (sdata->vif.type) { |
4b7afb52 FF |
1416 | case NL80211_IFTYPE_P2P_DEVICE: |
1417 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
1418 | break; | |
1419 | case NL80211_IFTYPE_MONITOR: | |
1420 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
1421 | break; | |
1422 | list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); | |
1423 | break; | |
1424 | default: | |
1425 | break; | |
5a490510 | 1426 | } |
5a490510 | 1427 | |
4b7afb52 FF |
1428 | /* |
1429 | * set_multicast_list will be invoked by the networking core | |
1430 | * which will check whether any increments here were done in | |
1431 | * error and sync them down to the hardware as filter flags. | |
1432 | */ | |
1433 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
1434 | atomic_inc(&local->iff_allmultis); | |
587e729e | 1435 | |
4b7afb52 FF |
1436 | if (coming_up) |
1437 | local->open_count++; | |
cf0277e7 | 1438 | |
4b7afb52 FF |
1439 | if (hw_reconf_flags) |
1440 | ieee80211_hw_config(local, hw_reconf_flags); | |
cf0277e7 | 1441 | |
4b7afb52 | 1442 | ieee80211_recalc_ps(local); |
cb17ed29 | 1443 | |
c95014e1 AW |
1444 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
1445 | ||
4b7afb52 FF |
1446 | return 0; |
1447 | err_del_interface: | |
1448 | drv_remove_interface(local, sdata); | |
1449 | err_stop: | |
1450 | if (!local->open_count) | |
1451 | drv_stop(local); | |
1452 | err_del_bss: | |
1453 | sdata->bss = NULL; | |
0cd8080e | 1454 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
4b7afb52 | 1455 | list_del(&sdata->u.vlan.list); |
4b7afb52 FF |
1456 | /* might already be clear but that doesn't matter */ |
1457 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); | |
1458 | return res; | |
1459 | } | |
50ff477a | 1460 | |
5a490510 JB |
1461 | static void ieee80211_if_free(struct net_device *dev) |
1462 | { | |
1463 | free_percpu(dev->tstats); | |
5a490510 JB |
1464 | } |
1465 | ||
587e729e JB |
1466 | static void ieee80211_if_setup(struct net_device *dev) |
1467 | { | |
1468 | ether_setup(dev); | |
550fd08c | 1469 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
107395f9 | 1470 | dev->priv_flags |= IFF_NO_QUEUE; |
587e729e | 1471 | dev->netdev_ops = &ieee80211_dataif_ops; |
cf124db5 DM |
1472 | dev->needs_free_netdev = true; |
1473 | dev->priv_destructor = ieee80211_if_free; | |
587e729e JB |
1474 | } |
1475 | ||
07bd1c79 JB |
1476 | static void ieee80211_iface_process_skb(struct ieee80211_local *local, |
1477 | struct ieee80211_sub_if_data *sdata, | |
1478 | struct sk_buff *skb) | |
1479 | { | |
1480 | struct ieee80211_mgmt *mgmt = (void *)skb->data; | |
1481 | ||
4d3acf43 JB |
1482 | lockdep_assert_wiphy(local->hw.wiphy); |
1483 | ||
07bd1c79 JB |
1484 | if (ieee80211_is_action(mgmt->frame_control) && |
1485 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
1486 | struct sta_info *sta; | |
1487 | int len = skb->len; | |
1488 | ||
07bd1c79 JB |
1489 | sta = sta_info_get_bss(sdata, mgmt->sa); |
1490 | if (sta) { | |
1491 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1492 | case WLAN_ACTION_ADDBA_REQ: | |
1493 | ieee80211_process_addba_request(local, sta, | |
1494 | mgmt, len); | |
1495 | break; | |
1496 | case WLAN_ACTION_ADDBA_RESP: | |
1497 | ieee80211_process_addba_resp(local, sta, | |
1498 | mgmt, len); | |
1499 | break; | |
1500 | case WLAN_ACTION_DELBA: | |
1501 | ieee80211_process_delba(sdata, sta, | |
1502 | mgmt, len); | |
1503 | break; | |
1504 | default: | |
1505 | WARN_ON(1); | |
1506 | break; | |
1507 | } | |
1508 | } | |
07bd1c79 JB |
1509 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1510 | mgmt->u.action.category == WLAN_CATEGORY_VHT) { | |
1511 | switch (mgmt->u.action.u.vht_group_notif.action_code) { | |
1512 | case WLAN_VHT_ACTION_OPMODE_NOTIF: { | |
1513 | struct ieee80211_rx_status *status; | |
1514 | enum nl80211_band band; | |
1515 | struct sta_info *sta; | |
1516 | u8 opmode; | |
1517 | ||
1518 | status = IEEE80211_SKB_RXCB(skb); | |
1519 | band = status->band; | |
1520 | opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; | |
1521 | ||
07bd1c79 JB |
1522 | sta = sta_info_get_bss(sdata, mgmt->sa); |
1523 | ||
1524 | if (sta) | |
c71420db JB |
1525 | ieee80211_vht_handle_opmode(sdata, |
1526 | &sta->deflink, | |
afe0d181 | 1527 | opmode, band); |
07bd1c79 | 1528 | |
07bd1c79 JB |
1529 | break; |
1530 | } | |
1531 | case WLAN_VHT_ACTION_GROUPID_MGMT: | |
d8675a63 JB |
1532 | ieee80211_process_mu_groups(sdata, &sdata->deflink, |
1533 | mgmt); | |
07bd1c79 JB |
1534 | break; |
1535 | default: | |
1536 | WARN_ON(1); | |
1537 | break; | |
1538 | } | |
f5a4c24e LB |
1539 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1540 | mgmt->u.action.category == WLAN_CATEGORY_S1G) { | |
1541 | switch (mgmt->u.action.u.s1g.action_code) { | |
1542 | case WLAN_S1G_TWT_TEARDOWN: | |
1543 | case WLAN_S1G_TWT_SETUP: | |
1544 | ieee80211_s1g_rx_twt_action(sdata, skb); | |
1545 | break; | |
1546 | default: | |
1547 | break; | |
1548 | } | |
07bd1c79 JB |
1549 | } else if (ieee80211_is_ext(mgmt->frame_control)) { |
1550 | if (sdata->vif.type == NL80211_IFTYPE_STATION) | |
1551 | ieee80211_sta_rx_queued_ext(sdata, skb); | |
1552 | else | |
1553 | WARN_ON(1); | |
1554 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { | |
1555 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1556 | struct sta_info *sta; | |
1557 | ||
1558 | /* | |
1559 | * So the frame isn't mgmt, but frame_control | |
1560 | * is at the right place anyway, of course, so | |
1561 | * the if statement is correct. | |
1562 | * | |
1563 | * Warn if we have other data frame types here, | |
1564 | * they must not get here. | |
1565 | */ | |
1566 | WARN_ON(hdr->frame_control & | |
1567 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1568 | WARN_ON(!(hdr->seq_ctrl & | |
1569 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1570 | /* | |
1571 | * This was a fragment of a frame, received while | |
1572 | * a block-ack session was active. That cannot be | |
1573 | * right, so terminate the session. | |
1574 | */ | |
07bd1c79 JB |
1575 | sta = sta_info_get_bss(sdata, mgmt->sa); |
1576 | if (sta) { | |
1577 | u16 tid = ieee80211_get_tid(hdr); | |
1578 | ||
1579 | __ieee80211_stop_rx_ba_session( | |
1580 | sta, tid, WLAN_BACK_RECIPIENT, | |
1581 | WLAN_REASON_QSTA_REQUIRE_SETUP, | |
1582 | true); | |
1583 | } | |
07bd1c79 JB |
1584 | } else switch (sdata->vif.type) { |
1585 | case NL80211_IFTYPE_STATION: | |
1586 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1587 | break; | |
1588 | case NL80211_IFTYPE_ADHOC: | |
1589 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1590 | break; | |
1591 | case NL80211_IFTYPE_MESH_POINT: | |
1592 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1593 | break; | |
1594 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1595 | break; | |
1596 | default: | |
1597 | WARN(1, "frame for unexpected interface type"); | |
1598 | break; | |
1599 | } | |
1600 | } | |
1601 | ||
f5a4c24e LB |
1602 | static void ieee80211_iface_process_status(struct ieee80211_sub_if_data *sdata, |
1603 | struct sk_buff *skb) | |
1604 | { | |
1605 | struct ieee80211_mgmt *mgmt = (void *)skb->data; | |
1606 | ||
1607 | if (ieee80211_is_action(mgmt->frame_control) && | |
1608 | mgmt->u.action.category == WLAN_CATEGORY_S1G) { | |
1609 | switch (mgmt->u.action.u.s1g.action_code) { | |
1610 | case WLAN_S1G_TWT_TEARDOWN: | |
1611 | case WLAN_S1G_TWT_SETUP: | |
1612 | ieee80211_s1g_status_twt_action(sdata, skb); | |
1613 | break; | |
1614 | default: | |
1615 | break; | |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | ||
16114496 | 1620 | static void ieee80211_iface_work(struct wiphy *wiphy, struct wiphy_work *work) |
1fa57d01 JB |
1621 | { |
1622 | struct ieee80211_sub_if_data *sdata = | |
1623 | container_of(work, struct ieee80211_sub_if_data, work); | |
1624 | struct ieee80211_local *local = sdata->local; | |
1625 | struct sk_buff *skb; | |
1626 | ||
1627 | if (!ieee80211_sdata_running(sdata)) | |
1628 | return; | |
1629 | ||
fc58c47e | 1630 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
1fa57d01 JB |
1631 | return; |
1632 | ||
4afaff17 | 1633 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1634 | return; |
1635 | ||
1636 | /* first process frames */ | |
1637 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
261e411b | 1638 | kcov_remote_start_common(skb_get_kcov_handle(skb)); |
bed7ee6e | 1639 | |
f057d140 JB |
1640 | if (skb->protocol == cpu_to_be16(ETH_P_TDLS)) |
1641 | ieee80211_process_tdls_channel_switch(sdata, skb); | |
1642 | else | |
1643 | ieee80211_iface_process_skb(local, sdata, skb); | |
36b3a628 JB |
1644 | |
1645 | kfree_skb(skb); | |
261e411b | 1646 | kcov_remote_stop(); |
1fa57d01 JB |
1647 | } |
1648 | ||
f5a4c24e LB |
1649 | /* process status queue */ |
1650 | while ((skb = skb_dequeue(&sdata->status_queue))) { | |
1651 | kcov_remote_start_common(skb_get_kcov_handle(skb)); | |
1652 | ||
1653 | ieee80211_iface_process_status(sdata, skb); | |
1654 | kfree_skb(skb); | |
1655 | ||
1656 | kcov_remote_stop(); | |
1657 | } | |
1658 | ||
1fa57d01 JB |
1659 | /* then other type-dependent work */ |
1660 | switch (sdata->vif.type) { | |
1661 | case NL80211_IFTYPE_STATION: | |
1662 | ieee80211_sta_work(sdata); | |
1663 | break; | |
1664 | case NL80211_IFTYPE_ADHOC: | |
1665 | ieee80211_ibss_work(sdata); | |
1666 | break; | |
1667 | case NL80211_IFTYPE_MESH_POINT: | |
1668 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1669 | break; | |
1670 | ieee80211_mesh_work(sdata); | |
1671 | break; | |
239281f8 RL |
1672 | case NL80211_IFTYPE_OCB: |
1673 | ieee80211_ocb_work(sdata); | |
1674 | break; | |
1fa57d01 JB |
1675 | default: |
1676 | break; | |
1677 | } | |
1678 | } | |
1679 | ||
7206a948 JB |
1680 | static void ieee80211_activate_links_work(struct wiphy *wiphy, |
1681 | struct wiphy_work *work) | |
3d901102 JB |
1682 | { |
1683 | struct ieee80211_sub_if_data *sdata = | |
1684 | container_of(work, struct ieee80211_sub_if_data, | |
1685 | activate_links_work); | |
1686 | ||
1687 | ieee80211_set_active_links(&sdata->vif, sdata->desired_active_links); | |
1688 | } | |
1689 | ||
75636525 JB |
1690 | /* |
1691 | * Helper function to initialise an interface to a specific type. | |
1692 | */ | |
1693 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1694 | enum nl80211_iftype type) |
f0706e82 | 1695 | { |
239281f8 RL |
1696 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1697 | 0xff, 0xff, 0xff}; | |
1698 | ||
bfd8403a | 1699 | /* clear type-dependent unions */ |
75636525 | 1700 | memset(&sdata->u, 0, sizeof(sdata->u)); |
bfd8403a | 1701 | memset(&sdata->deflink.u, 0, sizeof(sdata->deflink.u)); |
75636525 JB |
1702 | |
1703 | /* and set some type-dependent values */ | |
1704 | sdata->vif.type = type; | |
2ca27bcf | 1705 | sdata->vif.p2p = false; |
60719ffd | 1706 | sdata->wdev.iftype = type; |
75636525 | 1707 | |
a621fa4d JB |
1708 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1709 | sdata->control_port_no_encrypt = false; | |
7f3f96ce MT |
1710 | sdata->control_port_over_nl80211 = false; |
1711 | sdata->control_port_no_preauth = false; | |
f276e20b | 1712 | sdata->vif.cfg.idle = true; |
db6d9e9e | 1713 | sdata->vif.bss_conf.txpower = INT_MIN; /* unset */ |
a621fa4d | 1714 | |
b53be792 SW |
1715 | sdata->noack_map = 0; |
1716 | ||
f142c6b9 JB |
1717 | /* only monitor/p2p-device differ */ |
1718 | if (sdata->dev) { | |
1719 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1720 | sdata->dev->type = ARPHRD_ETHER; | |
1721 | } | |
75636525 | 1722 | |
35f20c14 | 1723 | skb_queue_head_init(&sdata->skb_queue); |
f5a4c24e | 1724 | skb_queue_head_init(&sdata->status_queue); |
16114496 | 1725 | wiphy_work_init(&sdata->work, ieee80211_iface_work); |
7206a948 JB |
1726 | wiphy_work_init(&sdata->activate_links_work, |
1727 | ieee80211_activate_links_work); | |
35f20c14 | 1728 | |
75636525 | 1729 | switch (type) { |
2ca27bcf JB |
1730 | case NL80211_IFTYPE_P2P_GO: |
1731 | type = NL80211_IFTYPE_AP; | |
1732 | sdata->vif.type = type; | |
1733 | sdata->vif.p2p = true; | |
fc0561dc | 1734 | fallthrough; |
05c914fe | 1735 | case NL80211_IFTYPE_AP: |
d012a605 | 1736 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1737 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
ad2d223a | 1738 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
75636525 | 1739 | break; |
2ca27bcf JB |
1740 | case NL80211_IFTYPE_P2P_CLIENT: |
1741 | type = NL80211_IFTYPE_STATION; | |
1742 | sdata->vif.type = type; | |
1743 | sdata->vif.p2p = true; | |
fc0561dc | 1744 | fallthrough; |
05c914fe | 1745 | case NL80211_IFTYPE_STATION: |
bfd8403a | 1746 | sdata->vif.bss_conf.bssid = sdata->deflink.u.mgd.bssid; |
9c6bd790 | 1747 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1748 | break; |
6e0bd6c3 | 1749 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1750 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1751 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1752 | break; |
46900298 | 1753 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1754 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1755 | ieee80211_ibss_setup_sdata(sdata); |
1756 | break; | |
05c914fe | 1757 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1758 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1759 | ieee80211_mesh_init_sdata(sdata); | |
1760 | break; | |
05c914fe | 1761 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1762 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1763 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
d8212184 | 1764 | sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | |
75636525 JB |
1765 | MONITOR_FLAG_OTHER_BSS; |
1766 | break; | |
167e33f4 AB |
1767 | case NL80211_IFTYPE_NAN: |
1768 | idr_init(&sdata->u.nan.function_inst_ids); | |
1769 | spin_lock_init(&sdata->u.nan.func_lock); | |
1770 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
1771 | break; | |
05c914fe | 1772 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1773 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1774 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1775 | break; |
05c914fe | 1776 | case NL80211_IFTYPE_UNSPECIFIED: |
70d9c599 | 1777 | case NL80211_IFTYPE_WDS: |
2e161f78 | 1778 | case NUM_NL80211_IFTYPES: |
c7976f52 | 1779 | WARN_ON(1); |
75636525 JB |
1780 | break; |
1781 | } | |
1782 | ||
b2e8434f JB |
1783 | /* need to do this after the switch so vif.type is correct */ |
1784 | ieee80211_link_setup(&sdata->deflink); | |
1785 | ||
c942398f | 1786 | ieee80211_debugfs_add_netdev(sdata, false); |
75636525 JB |
1787 | } |
1788 | ||
34d4bc4d JB |
1789 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1790 | enum nl80211_iftype type) | |
1791 | { | |
1792 | struct ieee80211_local *local = sdata->local; | |
1793 | int ret, err; | |
2ca27bcf JB |
1794 | enum nl80211_iftype internal_type = type; |
1795 | bool p2p = false; | |
34d4bc4d JB |
1796 | |
1797 | ASSERT_RTNL(); | |
1798 | ||
1799 | if (!local->ops->change_interface) | |
1800 | return -EBUSY; | |
1801 | ||
d8787ec6 | 1802 | /* for now, don't support changing while links exist */ |
f1871abd | 1803 | if (ieee80211_vif_is_mld(&sdata->vif)) |
d8787ec6 JB |
1804 | return -EBUSY; |
1805 | ||
34d4bc4d JB |
1806 | switch (sdata->vif.type) { |
1807 | case NL80211_IFTYPE_AP: | |
d5befb22 JB |
1808 | if (!list_empty(&sdata->u.ap.vlans)) |
1809 | return -EBUSY; | |
1810 | break; | |
34d4bc4d JB |
1811 | case NL80211_IFTYPE_STATION: |
1812 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1813 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1814 | /* |
1815 | * Could maybe also all others here? | |
1816 | * Just not sure how that interacts | |
1817 | * with the RX/config path e.g. for | |
1818 | * mesh. | |
1819 | */ | |
1820 | break; | |
1821 | default: | |
1822 | return -EBUSY; | |
1823 | } | |
1824 | ||
1825 | switch (type) { | |
1826 | case NL80211_IFTYPE_AP: | |
1827 | case NL80211_IFTYPE_STATION: | |
1828 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1829 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1830 | /* |
1831 | * Could probably support everything | |
70d9c599 | 1832 | * but here. |
34d4bc4d JB |
1833 | */ |
1834 | break; | |
2ca27bcf JB |
1835 | case NL80211_IFTYPE_P2P_CLIENT: |
1836 | p2p = true; | |
1837 | internal_type = NL80211_IFTYPE_STATION; | |
1838 | break; | |
1839 | case NL80211_IFTYPE_P2P_GO: | |
1840 | p2p = true; | |
1841 | internal_type = NL80211_IFTYPE_AP; | |
1842 | break; | |
34d4bc4d JB |
1843 | default: |
1844 | return -EBUSY; | |
1845 | } | |
1846 | ||
2ca27bcf | 1847 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1848 | if (ret) |
1849 | return ret; | |
1850 | ||
054c9939 JB |
1851 | ieee80211_stop_vif_queues(local, sdata, |
1852 | IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); | |
b2ddde56 | 1853 | /* do_stop will synchronize_rcu() first thing */ |
34d4bc4d JB |
1854 | ieee80211_do_stop(sdata, false); |
1855 | ||
f142c6b9 | 1856 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1857 | |
6aea26ce | 1858 | ieee80211_set_sdata_offload_flags(sdata); |
2ca27bcf | 1859 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1860 | if (ret) |
a9865538 | 1861 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1862 | |
3a25a8c8 JB |
1863 | /* |
1864 | * Ignore return value here, there's not much we can do since | |
1865 | * the driver changed the interface type internally already. | |
1866 | * The warnings will hopefully make driver authors fix it :-) | |
1867 | */ | |
a9865538 | 1868 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1869 | |
34d4bc4d | 1870 | ieee80211_setup_sdata(sdata, type); |
6aea26ce | 1871 | ieee80211_set_vif_encap_ops(sdata); |
34d4bc4d | 1872 | |
f142c6b9 | 1873 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1874 | WARN(err, "type change: do_open returned %d", err); |
1875 | ||
054c9939 JB |
1876 | ieee80211_wake_vif_queues(local, sdata, |
1877 | IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE); | |
34d4bc4d JB |
1878 | return ret; |
1879 | } | |
1880 | ||
f3947e2d | 1881 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1882 | enum nl80211_iftype type) |
75636525 | 1883 | { |
34d4bc4d JB |
1884 | int ret; |
1885 | ||
f3947e2d JB |
1886 | ASSERT_RTNL(); |
1887 | ||
2ca27bcf | 1888 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1889 | return 0; |
1890 | ||
34d4bc4d JB |
1891 | if (ieee80211_sdata_running(sdata)) { |
1892 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1893 | if (ret) | |
1894 | return ret; | |
1895 | } else { | |
1896 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1897 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1898 | ieee80211_setup_sdata(sdata, type); |
1899 | } | |
75636525 JB |
1900 | |
1901 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1902 | if (type == NL80211_IFTYPE_STATION) |
1903 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1904 | |
1905 | return 0; | |
f0706e82 JB |
1906 | } |
1907 | ||
fa9029f8 | 1908 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1909 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1910 | { |
1911 | struct ieee80211_sub_if_data *sdata; | |
1912 | u64 mask, start, addr, val, inc; | |
1913 | u8 *m; | |
1914 | u8 tmp_addr[ETH_ALEN]; | |
1915 | int i; | |
1916 | ||
be0df01d JB |
1917 | lockdep_assert_wiphy(local->hw.wiphy); |
1918 | ||
fa9029f8 | 1919 | /* default ... something at least */ |
f142c6b9 | 1920 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1921 | |
1922 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1923 | local->hw.wiphy->n_addresses <= 1) | |
1924 | return; | |
1925 | ||
fa9029f8 JB |
1926 | switch (type) { |
1927 | case NL80211_IFTYPE_MONITOR: | |
1928 | /* doesn't matter */ | |
1929 | break; | |
fa9029f8 JB |
1930 | case NL80211_IFTYPE_AP_VLAN: |
1931 | /* match up with an AP interface */ | |
1932 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1933 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1934 | continue; | |
f142c6b9 | 1935 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1936 | break; |
1937 | } | |
1938 | /* keep default if no AP interface present */ | |
1939 | break; | |
6d71117a JB |
1940 | case NL80211_IFTYPE_P2P_CLIENT: |
1941 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1942 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1943 | list_for_each_entry(sdata, &local->interfaces, list) { |
1944 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1945 | continue; | |
1946 | if (!ieee80211_sdata_running(sdata)) | |
1947 | continue; | |
1948 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
be0df01d | 1949 | return; |
6d71117a JB |
1950 | } |
1951 | } | |
fc0561dc | 1952 | fallthrough; |
fa9029f8 JB |
1953 | default: |
1954 | /* assign a new address if possible -- try n_addresses first */ | |
1955 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1956 | bool used = false; | |
1957 | ||
1958 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1959 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1960 | sdata->vif.addr)) { | |
fa9029f8 JB |
1961 | used = true; |
1962 | break; | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | if (!used) { | |
f142c6b9 | 1967 | memcpy(perm_addr, |
fa9029f8 JB |
1968 | local->hw.wiphy->addresses[i].addr, |
1969 | ETH_ALEN); | |
1970 | break; | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | /* try mask if available */ | |
1975 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1976 | break; | |
1977 | ||
1978 | m = local->hw.wiphy->addr_mask; | |
1979 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1980 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1981 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1982 | ||
1983 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1984 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1985 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1986 | break; |
1987 | } | |
1988 | ||
ac20976d HS |
1989 | /* |
1990 | * Pick address of existing interface in case user changed | |
1991 | * MAC address manually, default to perm_addr. | |
1992 | */ | |
fa9029f8 | 1993 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1994 | list_for_each_entry(sdata, &local->interfaces, list) { |
1995 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1996 | continue; | |
1997 | m = sdata->vif.addr; | |
1998 | break; | |
1999 | } | |
fa9029f8 JB |
2000 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
2001 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
2002 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
2003 | ||
2004 | inc = 1ULL<<__ffs64(mask); | |
2005 | val = (start & mask); | |
2006 | addr = (start & ~mask) | (val & mask); | |
2007 | do { | |
2008 | bool used = false; | |
2009 | ||
2010 | tmp_addr[5] = addr >> 0*8; | |
2011 | tmp_addr[4] = addr >> 1*8; | |
2012 | tmp_addr[3] = addr >> 2*8; | |
2013 | tmp_addr[2] = addr >> 3*8; | |
2014 | tmp_addr[1] = addr >> 4*8; | |
2015 | tmp_addr[0] = addr >> 5*8; | |
2016 | ||
2017 | val += inc; | |
2018 | ||
2019 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 2020 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
2021 | used = true; |
2022 | break; | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | if (!used) { | |
f142c6b9 | 2027 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
2028 | break; |
2029 | } | |
2030 | addr = (start & ~mask) | (val & mask); | |
2031 | } while (addr != start); | |
2032 | ||
2033 | break; | |
2034 | } | |
fa9029f8 JB |
2035 | } |
2036 | ||
3e122be0 | 2037 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 2038 | unsigned char name_assign_type, |
84efbb84 | 2039 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 2040 | struct vif_params *params) |
f0706e82 | 2041 | { |
f142c6b9 | 2042 | struct net_device *ndev = NULL; |
f0706e82 | 2043 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 2044 | struct txq_info *txqi; |
75636525 | 2045 | int ret, i; |
f0706e82 JB |
2046 | |
2047 | ASSERT_RTNL(); | |
be0df01d | 2048 | lockdep_assert_wiphy(local->hw.wiphy); |
75636525 | 2049 | |
708d50ed | 2050 | if (type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN) { |
f142c6b9 JB |
2051 | struct wireless_dev *wdev; |
2052 | ||
2053 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
2054 | GFP_KERNEL); | |
2055 | if (!sdata) | |
2056 | return -ENOMEM; | |
2057 | wdev = &sdata->wdev; | |
2058 | ||
2059 | sdata->dev = NULL; | |
28b904ec | 2060 | strscpy(sdata->name, name, IFNAMSIZ); |
f142c6b9 JB |
2061 | ieee80211_assign_perm_addr(local, wdev->address, type); |
2062 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
d8787ec6 | 2063 | ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); |
f142c6b9 | 2064 | } else { |
ba8c3d6f FF |
2065 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
2066 | sizeof(void *)); | |
2067 | int txq_size = 0; | |
2068 | ||
107395f9 | 2069 | if (type != NL80211_IFTYPE_AP_VLAN && |
8105f9b8 FF |
2070 | (type != NL80211_IFTYPE_MONITOR || |
2071 | (params->flags & MONITOR_FLAG_ACTIVE))) | |
ba8c3d6f FF |
2072 | txq_size += sizeof(struct txq_info) + |
2073 | local->hw.txq_data_size; | |
2074 | ||
ba8c3d6f | 2075 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 2076 | name, name_assign_type, |
107395f9 | 2077 | ieee80211_if_setup, 1, 1); |
f142c6b9 JB |
2078 | if (!ndev) |
2079 | return -ENOMEM; | |
1f6e0baa | 2080 | |
f142c6b9 JB |
2081 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
2082 | ||
5a490510 JB |
2083 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
2084 | if (!ndev->tstats) { | |
2085 | free_netdev(ndev); | |
2086 | return -ENOMEM; | |
2087 | } | |
2088 | ||
f142c6b9 JB |
2089 | ndev->needed_headroom = local->tx_headroom + |
2090 | 4*6 /* four MAC addresses */ | |
2091 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
2092 | + 6 /* mesh */ | |
2093 | + 8 /* rfc1042/bridge tunnel */ | |
2094 | - ETH_HLEN /* ethernet hard_header_len */ | |
2095 | + IEEE80211_ENCRYPT_HEADROOM; | |
2096 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
2097 | ||
2098 | ret = dev_alloc_name(ndev, ndev->name); | |
2099 | if (ret < 0) { | |
e6436be2 | 2100 | ieee80211_if_free(ndev); |
c7a61cba | 2101 | free_netdev(ndev); |
f142c6b9 JB |
2102 | return ret; |
2103 | } | |
2104 | ||
2105 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
dd665d23 | 2106 | if (is_valid_ether_addr(params->macaddr)) |
de1352ea | 2107 | eth_hw_addr_set(ndev, params->macaddr); |
b5dfae02 | 2108 | else |
de1352ea | 2109 | eth_hw_addr_set(ndev, ndev->perm_addr); |
f142c6b9 JB |
2110 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
2111 | ||
2112 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
2113 | sdata = netdev_priv(ndev); | |
2114 | ndev->ieee80211_ptr = &sdata->wdev; | |
2115 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
d8787ec6 | 2116 | ether_addr_copy(sdata->vif.bss_conf.addr, sdata->vif.addr); |
f142c6b9 JB |
2117 | memcpy(sdata->name, ndev->name, IFNAMSIZ); |
2118 | ||
ba8c3d6f FF |
2119 | if (txq_size) { |
2120 | txqi = netdev_priv(ndev) + size; | |
fa962b92 | 2121 | ieee80211_txq_init(sdata, NULL, txqi, 0); |
ba8c3d6f FF |
2122 | } |
2123 | ||
f142c6b9 JB |
2124 | sdata->dev = ndev; |
2125 | } | |
75636525 JB |
2126 | |
2127 | /* initialise type-independent data */ | |
f0706e82 | 2128 | sdata->wdev.wiphy = local->hw.wiphy; |
8e14130d JB |
2129 | |
2130 | ieee80211_sdata_init(local, sdata); | |
75636525 | 2131 | |
3a11ce08 | 2132 | ieee80211_init_frag_cache(&sdata->frags); |
75636525 JB |
2133 | |
2134 | INIT_LIST_HEAD(&sdata->key_list); | |
2135 | ||
e3208fb7 JB |
2136 | wiphy_delayed_work_init(&sdata->dec_tailroom_needed_wk, |
2137 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 2138 | |
57fbcce3 | 2139 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
37eb0b16 JM |
2140 | struct ieee80211_supported_band *sband; |
2141 | sband = local->hw.wiphy->bands[i]; | |
2142 | sdata->rc_rateidx_mask[i] = | |
2143 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
b119ad6e LB |
2144 | if (sband) { |
2145 | __le16 cap; | |
2146 | u16 *vht_rate_mask; | |
2147 | ||
19468413 SW |
2148 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
2149 | sband->ht_cap.mcs.rx_mask, | |
2150 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
2151 | |
2152 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; | |
2153 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; | |
2154 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); | |
2155 | } else { | |
19468413 SW |
2156 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
2157 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
2158 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
2159 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); | |
2160 | } | |
37eb0b16 | 2161 | } |
75636525 | 2162 | |
3a25a8c8 JB |
2163 | ieee80211_set_default_queues(sdata); |
2164 | ||
bfd8403a JB |
2165 | sdata->deflink.ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
2166 | sdata->deflink.user_power_level = local->user_power_level; | |
1ea6f9c0 | 2167 | |
75636525 JB |
2168 | /* setup type-dependent data */ |
2169 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 2170 | |
f142c6b9 | 2171 | if (ndev) { |
dd665d23 JB |
2172 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; |
2173 | if (type == NL80211_IFTYPE_STATION) | |
2174 | sdata->u.mgd.use_4addr = params->use_4addr; | |
9bc383de | 2175 | |
f142c6b9 | 2176 | ndev->features |= local->hw.netdev_features; |
3c06e91b | 2177 | ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |
07b83d2e JB |
2178 | ndev->hw_features |= ndev->features & |
2179 | MAC80211_SUPPORTED_FEATURES_TX; | |
7d360f60 | 2180 | sdata->vif.netdev_features = local->hw.netdev_features; |
72d78728 | 2181 | |
b7ffbd7e JB |
2182 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
2183 | ||
79f5962b JA |
2184 | /* MTU range is normally 256 - 2304, where the upper limit is |
2185 | * the maximum MSDU size. Monitor interfaces send and receive | |
2186 | * MPDU and A-MSDU frames which may be much larger so we do | |
2187 | * not impose an upper limit in that case. | |
2188 | */ | |
9c22b4a3 | 2189 | ndev->min_mtu = 256; |
79f5962b JA |
2190 | if (type == NL80211_IFTYPE_MONITOR) |
2191 | ndev->max_mtu = 0; | |
2192 | else | |
2193 | ndev->max_mtu = local->hw.max_mtu; | |
9c22b4a3 | 2194 | |
2fe8ef10 | 2195 | ret = cfg80211_register_netdevice(ndev); |
f142c6b9 | 2196 | if (ret) { |
cf124db5 | 2197 | free_netdev(ndev); |
f142c6b9 JB |
2198 | return ret; |
2199 | } | |
2200 | } | |
f0706e82 | 2201 | |
c771c9d8 | 2202 | mutex_lock(&local->iflist_mtx); |
79010420 | 2203 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 2204 | mutex_unlock(&local->iflist_mtx); |
79010420 | 2205 | |
84efbb84 JB |
2206 | if (new_wdev) |
2207 | *new_wdev = &sdata->wdev; | |
f0706e82 | 2208 | |
f0706e82 | 2209 | return 0; |
f0706e82 JB |
2210 | } |
2211 | ||
f698d856 | 2212 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2213 | { |
f0706e82 | 2214 | ASSERT_RTNL(); |
be0df01d | 2215 | lockdep_assert_wiphy(sdata->local->hw.wiphy); |
11a843b7 | 2216 | |
c771c9d8 | 2217 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 2218 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
2219 | mutex_unlock(&sdata->local->iflist_mtx); |
2220 | ||
f1267cf3 BP |
2221 | if (sdata->vif.txq) |
2222 | ieee80211_txq_purge(sdata->local, to_txq_info(sdata->vif.txq)); | |
2223 | ||
75636525 | 2224 | synchronize_rcu(); |
f142c6b9 | 2225 | |
2fe8ef10 JB |
2226 | cfg80211_unregister_wdev(&sdata->wdev); |
2227 | ||
2228 | if (!sdata->dev) { | |
835112b2 | 2229 | ieee80211_teardown_sdata(sdata); |
f142c6b9 JB |
2230 | kfree(sdata); |
2231 | } | |
2232 | } | |
2233 | ||
2234 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
2235 | { | |
2236 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
2237 | return; | |
2238 | ieee80211_do_stop(sdata, true); | |
f0706e82 JB |
2239 | } |
2240 | ||
75636525 | 2241 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
f0706e82 | 2242 | { |
75636525 | 2243 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 2244 | LIST_HEAD(unreg_list); |
f0706e82 JB |
2245 | |
2246 | ASSERT_RTNL(); | |
2247 | ||
d8d9008c JB |
2248 | /* Before destroying the interfaces, make sure they're all stopped so |
2249 | * that the hardware is stopped. Otherwise, the driver might still be | |
2250 | * iterating the interfaces during the shutdown, e.g. from a worker | |
2251 | * or from RX processing or similar, and if it does so (using atomic | |
2252 | * iteration) while we're manipulating the list, the iteration will | |
2253 | * crash. | |
2254 | * | |
2255 | * After this, the hardware should be stopped and the driver should | |
2256 | * have stopped all of its activities, so that we can do RCU-unaware | |
2257 | * manipulations of the interface list below. | |
c8aa22db | 2258 | */ |
d8d9008c JB |
2259 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
2260 | ||
332e68bc JB |
2261 | wiphy_lock(local->hw.wiphy); |
2262 | ||
d8d9008c JB |
2263 | WARN(local->open_count, "%s: open count remains %d\n", |
2264 | wiphy_name(local->hw.wiphy), local->open_count); | |
c8aa22db | 2265 | |
efe117ab | 2266 | mutex_lock(&local->iflist_mtx); |
a3df43b1 | 2267 | list_splice_init(&local->interfaces, &unreg_list); |
efe117ab | 2268 | mutex_unlock(&local->iflist_mtx); |
a05829a7 | 2269 | |
a3df43b1 JB |
2270 | list_for_each_entry_safe(sdata, tmp, &unreg_list, list) { |
2271 | bool netdev = sdata->dev; | |
2272 | ||
730538ed JB |
2273 | /* |
2274 | * Remove IP addresses explicitly, since the notifier will | |
2275 | * skip the callbacks if wdev->registered is false, since | |
2276 | * we can't acquire the wiphy_lock() again there if already | |
2277 | * inside this locked section. | |
2278 | */ | |
730538ed JB |
2279 | sdata->vif.cfg.arp_addr_cnt = 0; |
2280 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
2281 | sdata->u.mgd.associated) | |
2282 | ieee80211_vif_cfg_change_notify(sdata, | |
2283 | BSS_CHANGED_ARP_FILTER); | |
730538ed | 2284 | |
f142c6b9 JB |
2285 | list_del(&sdata->list); |
2286 | cfg80211_unregister_wdev(&sdata->wdev); | |
a3df43b1 JB |
2287 | |
2288 | if (!netdev) | |
2289 | kfree(sdata); | |
f142c6b9 | 2290 | } |
a05829a7 | 2291 | wiphy_unlock(local->hw.wiphy); |
f0706e82 | 2292 | } |
5cff20e6 | 2293 | |
47846c9b | 2294 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 2295 | unsigned long state, void *ptr) |
47846c9b | 2296 | { |
351638e7 | 2297 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
2298 | struct ieee80211_sub_if_data *sdata; |
2299 | ||
2300 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 2301 | return NOTIFY_DONE; |
47846c9b JB |
2302 | |
2303 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 2304 | return NOTIFY_DONE; |
47846c9b JB |
2305 | |
2306 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 2307 | return NOTIFY_DONE; |
47846c9b JB |
2308 | |
2309 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 2310 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 2311 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
2312 | |
2313 | return NOTIFY_OK; | |
47846c9b JB |
2314 | } |
2315 | ||
2316 | static struct notifier_block mac80211_netdev_notifier = { | |
2317 | .notifier_call = netdev_notify, | |
2318 | }; | |
2319 | ||
2320 | int ieee80211_iface_init(void) | |
2321 | { | |
2322 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
2323 | } | |
2324 | ||
2325 | void ieee80211_iface_exit(void) | |
2326 | { | |
2327 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
2328 | } | |
72f15d53 MB |
2329 | |
2330 | void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2331 | { | |
2332 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2333 | atomic_inc(&sdata->u.ap.num_mcast_sta); | |
2334 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2335 | atomic_inc(&sdata->u.vlan.num_mcast_sta); | |
2336 | } | |
2337 | ||
2338 | void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2339 | { | |
2340 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2341 | atomic_dec(&sdata->u.ap.num_mcast_sta); | |
2342 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2343 | atomic_dec(&sdata->u.vlan.num_mcast_sta); | |
2344 | } |