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Commit | Line | Data |
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f0706e82 | 1 | /* |
c5d54fbf | 2 | * Interface handling |
0d143fe1 | 3 | * |
f0706e82 JB |
4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
5 | * Copyright 2005-2006, Devicescape Software, Inc. | |
6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
d2941df8 | 9 | * Copyright (c) 2016 Intel Deutschland GmbH |
f0706e82 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
f0706e82 JB |
16 | #include <linux/kernel.h> |
17 | #include <linux/if_arp.h> | |
18 | #include <linux/netdevice.h> | |
19 | #include <linux/rtnetlink.h> | |
20 | #include <net/mac80211.h> | |
cf0277e7 | 21 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
22 | #include "ieee80211_i.h" |
23 | #include "sta_info.h" | |
e9f207f0 | 24 | #include "debugfs_netdev.h" |
ee385855 | 25 | #include "mesh.h" |
0d143fe1 | 26 | #include "led.h" |
24487981 | 27 | #include "driver-ops.h" |
cf0277e7 | 28 | #include "wme.h" |
1be7fe8d | 29 | #include "rate.h" |
0d143fe1 | 30 | |
c771c9d8 JB |
31 | /** |
32 | * DOC: Interface list locking | |
33 | * | |
34 | * The interface list in each struct ieee80211_local is protected | |
35 | * three-fold: | |
36 | * | |
37 | * (1) modifications may only be done under the RTNL | |
38 | * (2) modifications and readers are protected against each other by | |
39 | * the iflist_mtx. | |
40 | * (3) modifications are done in an RCU manner so atomic readers | |
41 | * can traverse the list in RCU-safe blocks. | |
42 | * | |
43 | * As a consequence, reads (traversals) of the list can be protected | |
44 | * by either the RTNL, the iflist_mtx or RCU. | |
45 | */ | |
46 | ||
42bd20d9 AE |
47 | static void ieee80211_iface_work(struct work_struct *work); |
48 | ||
1ea6f9c0 JB |
49 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
50 | { | |
51 | struct ieee80211_chanctx_conf *chanctx_conf; | |
52 | int power; | |
53 | ||
54 | rcu_read_lock(); | |
55 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
56 | if (!chanctx_conf) { | |
57 | rcu_read_unlock(); | |
58 | return false; | |
59 | } | |
60 | ||
0430c883 | 61 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
1ea6f9c0 JB |
62 | rcu_read_unlock(); |
63 | ||
64 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
65 | power = min(power, sdata->user_power_level); | |
66 | ||
67 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
68 | power = min(power, sdata->ap_power_level); | |
69 | ||
70 | if (power != sdata->vif.bss_conf.txpower) { | |
71 | sdata->vif.bss_conf.txpower = power; | |
72 | ieee80211_hw_config(sdata->local, 0); | |
73 | return true; | |
74 | } | |
75 | ||
76 | return false; | |
77 | } | |
78 | ||
db82d8a9 LB |
79 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
80 | bool update_bss) | |
1ea6f9c0 | 81 | { |
5ad11b50 EG |
82 | if (__ieee80211_recalc_txpower(sdata) || |
83 | (update_bss && ieee80211_sdata_running(sdata))) | |
1ea6f9c0 JB |
84 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
85 | } | |
c771c9d8 | 86 | |
62a40a15 | 87 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
88 | { |
89 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
90 | return 0; | |
91 | ||
92 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
93 | return IEEE80211_CONF_CHANGE_IDLE; | |
94 | } | |
95 | ||
62a40a15 | 96 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
97 | { |
98 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
99 | return 0; | |
100 | ||
3b24f4c6 | 101 | ieee80211_flush_queues(local, NULL, false); |
cc45ae54 JB |
102 | |
103 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
104 | return IEEE80211_CONF_CHANGE_IDLE; | |
105 | } | |
106 | ||
62a40a15 JB |
107 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
108 | bool force_active) | |
cc45ae54 | 109 | { |
1d5e1266 | 110 | bool working, scanning, active; |
cc45ae54 | 111 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 112 | |
cc45ae54 JB |
113 | lockdep_assert_held(&local->mtx); |
114 | ||
62a40a15 JB |
115 | active = force_active || |
116 | !list_empty(&local->chanctx_list) || | |
117 | local->monitors; | |
cc45ae54 | 118 | |
1d5e1266 JB |
119 | working = !local->ops->remain_on_channel && |
120 | !list_empty(&local->roc_list); | |
cc45ae54 | 121 | |
f1e3e051 JB |
122 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
123 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 124 | |
cc45ae54 JB |
125 | if (working || scanning) |
126 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
127 | else | |
128 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
129 | ||
fd0f979a | 130 | if (active) |
cc45ae54 JB |
131 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
132 | else | |
133 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
134 | ||
135 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
136 | ||
fd0f979a | 137 | if (working || scanning || active) |
62a40a15 JB |
138 | return __ieee80211_idle_off(local); |
139 | return __ieee80211_idle_on(local); | |
140 | } | |
141 | ||
142 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
143 | { | |
144 | return __ieee80211_recalc_idle(local, true); | |
145 | } | |
146 | ||
147 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
148 | { | |
149 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
150 | if (change) |
151 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
152 | } |
153 | ||
3899ba90 | 154 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 155 | bool check_dup) |
478622e8 | 156 | { |
ac20976d HS |
157 | struct ieee80211_local *local = sdata->local; |
158 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
159 | u64 new, mask, tmp; |
160 | u8 *m; | |
161 | int ret = 0; | |
162 | ||
163 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
164 | return 0; | |
165 | ||
166 | m = addr; | |
167 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
168 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
169 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
170 | ||
171 | m = local->hw.wiphy->addr_mask; | |
172 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
173 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
174 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
175 | ||
31eba5bc FF |
176 | if (!check_dup) |
177 | return ret; | |
478622e8 HS |
178 | |
179 | mutex_lock(&local->iflist_mtx); | |
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 | } | |
198 | mutex_unlock(&local->iflist_mtx); | |
199 | ||
200 | return ret; | |
201 | } | |
202 | ||
47846c9b JB |
203 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
204 | { | |
205 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 206 | struct sockaddr *sa = addr; |
31eba5bc | 207 | bool check_dup = true; |
47846c9b JB |
208 | int ret; |
209 | ||
9607e6b6 | 210 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
211 | return -EBUSY; |
212 | ||
31eba5bc | 213 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 214 | !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
215 | check_dup = false; |
216 | ||
3899ba90 | 217 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
218 | if (ret) |
219 | return ret; | |
220 | ||
fc5f7577 | 221 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
222 | |
223 | if (ret == 0) | |
fc5f7577 | 224 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
225 | |
226 | return ret; | |
227 | } | |
228 | ||
0d143fe1 JB |
229 | static inline int identical_mac_addr_allowed(int type1, int type2) |
230 | { | |
231 | return type1 == NL80211_IFTYPE_MONITOR || | |
232 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
233 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
234 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
235 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
236 | (type1 == NL80211_IFTYPE_WDS && | |
237 | (type2 == NL80211_IFTYPE_WDS || | |
238 | type2 == NL80211_IFTYPE_AP)) || | |
239 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
240 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
241 | (type2 == NL80211_IFTYPE_AP || | |
242 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
243 | } | |
244 | ||
87490f6d JB |
245 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
246 | enum nl80211_iftype iftype) | |
0d143fe1 | 247 | { |
b4a4bf5d | 248 | struct ieee80211_local *local = sdata->local; |
87490f6d | 249 | struct ieee80211_sub_if_data *nsdata; |
b6a55015 | 250 | int ret; |
0d143fe1 | 251 | |
87490f6d | 252 | ASSERT_RTNL(); |
0d143fe1 JB |
253 | |
254 | /* we hold the RTNL here so can safely walk the list */ | |
255 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 256 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
257 | /* |
258 | * Only OCB and monitor mode may coexist | |
259 | */ | |
260 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
261 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
262 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
263 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
264 | return -EBUSY; | |
265 | ||
0d143fe1 JB |
266 | /* |
267 | * Allow only a single IBSS interface to be up at any | |
268 | * time. This is restricted because beacon distribution | |
269 | * cannot work properly if both are in the same IBSS. | |
270 | * | |
271 | * To remove this restriction we'd have to disallow them | |
272 | * from setting the same SSID on different IBSS interfaces | |
273 | * belonging to the same hardware. Then, however, we're | |
274 | * faced with having to adopt two different TSF timers... | |
275 | */ | |
87490f6d | 276 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
277 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
278 | return -EBUSY; | |
73da7d5b SW |
279 | /* |
280 | * will not add another interface while any channel | |
281 | * switch is active. | |
282 | */ | |
283 | if (nsdata->vif.csa_active) | |
284 | return -EBUSY; | |
0d143fe1 JB |
285 | |
286 | /* | |
287 | * The remaining checks are only performed for interfaces | |
288 | * with the same MAC address. | |
289 | */ | |
371a255e JB |
290 | if (!ether_addr_equal(sdata->vif.addr, |
291 | nsdata->vif.addr)) | |
0d143fe1 JB |
292 | continue; |
293 | ||
294 | /* | |
295 | * check whether it may have the same address | |
296 | */ | |
87490f6d | 297 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
298 | nsdata->vif.type)) |
299 | return -ENOTUNIQ; | |
300 | ||
301 | /* | |
302 | * can only add VLANs to enabled APs | |
303 | */ | |
87490f6d | 304 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
305 | nsdata->vif.type == NL80211_IFTYPE_AP) |
306 | sdata->bss = &nsdata->u.ap; | |
307 | } | |
308 | } | |
309 | ||
b6a55015 LC |
310 | mutex_lock(&local->chanctx_mtx); |
311 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); | |
312 | mutex_unlock(&local->chanctx_mtx); | |
313 | return ret; | |
87490f6d JB |
314 | } |
315 | ||
a9865538 JB |
316 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
317 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
318 | { |
319 | int n_queues = sdata->local->hw.queues; | |
320 | int i; | |
321 | ||
708d50ed AB |
322 | if (iftype == NL80211_IFTYPE_NAN) |
323 | return 0; | |
324 | ||
a9865538 | 325 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
326 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
327 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
328 | IEEE80211_INVAL_HW_QUEUE)) | |
329 | return -EINVAL; | |
330 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
331 | n_queues)) | |
332 | return -EINVAL; | |
333 | } | |
3a25a8c8 JB |
334 | } |
335 | ||
a9865538 JB |
336 | if ((iftype != NL80211_IFTYPE_AP && |
337 | iftype != NL80211_IFTYPE_P2P_GO && | |
338 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
30686bf7 | 339 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
3a25a8c8 JB |
340 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
341 | return 0; | |
342 | } | |
343 | ||
344 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
345 | return -EINVAL; | |
346 | ||
347 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
348 | return -EINVAL; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
85416a4f CL |
353 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
354 | const int offset) | |
355 | { | |
356 | struct ieee80211_local *local = sdata->local; | |
d8212184 | 357 | u32 flags = sdata->u.mntr.flags; |
85416a4f CL |
358 | |
359 | #define ADJUST(_f, _s) do { \ | |
360 | if (flags & MONITOR_FLAG_##_f) \ | |
361 | local->fif_##_s += offset; \ | |
362 | } while (0) | |
363 | ||
364 | ADJUST(FCSFAIL, fcsfail); | |
365 | ADJUST(PLCPFAIL, plcpfail); | |
366 | ADJUST(CONTROL, control); | |
367 | ADJUST(CONTROL, pspoll); | |
368 | ADJUST(OTHER_BSS, other_bss); | |
369 | ||
370 | #undef ADJUST | |
371 | } | |
372 | ||
3a25a8c8 JB |
373 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
374 | { | |
375 | struct ieee80211_local *local = sdata->local; | |
376 | int i; | |
377 | ||
378 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
30686bf7 | 379 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
3a25a8c8 | 380 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; |
a9d3c05c | 381 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 382 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
383 | else |
384 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
385 | } |
386 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
387 | } | |
388 | ||
3c3e21e7 | 389 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
390 | { |
391 | struct ieee80211_sub_if_data *sdata; | |
8b305780 | 392 | int ret; |
4b6f1dd6 | 393 | |
30686bf7 | 394 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
395 | return 0; |
396 | ||
8b305780 | 397 | ASSERT_RTNL(); |
685fb72b | 398 | |
4b6f1dd6 | 399 | if (local->monitor_sdata) |
8b305780 | 400 | return 0; |
4b6f1dd6 JB |
401 | |
402 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
8b305780 JB |
403 | if (!sdata) |
404 | return -ENOMEM; | |
4b6f1dd6 JB |
405 | |
406 | /* set up data */ | |
407 | sdata->local = local; | |
408 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
409 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
410 | wiphy_name(local->hw.wiphy)); | |
34171dc0 | 411 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; |
4b6f1dd6 | 412 | |
2475b1cc MS |
413 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
414 | ||
3a25a8c8 JB |
415 | ieee80211_set_default_queues(sdata); |
416 | ||
4b6f1dd6 JB |
417 | ret = drv_add_interface(local, sdata); |
418 | if (WARN_ON(ret)) { | |
419 | /* ok .. stupid driver, it asked for this! */ | |
420 | kfree(sdata); | |
8b305780 | 421 | return ret; |
4b6f1dd6 JB |
422 | } |
423 | ||
a9865538 | 424 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
3a25a8c8 JB |
425 | if (ret) { |
426 | kfree(sdata); | |
8b305780 | 427 | return ret; |
3a25a8c8 JB |
428 | } |
429 | ||
fab57a6c JB |
430 | mutex_lock(&local->iflist_mtx); |
431 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
432 | mutex_unlock(&local->iflist_mtx); | |
433 | ||
34a3740d | 434 | mutex_lock(&local->mtx); |
4bf88530 | 435 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a | 436 | IEEE80211_CHANCTX_EXCLUSIVE); |
34a3740d | 437 | mutex_unlock(&local->mtx); |
55de908a | 438 | if (ret) { |
fab57a6c | 439 | mutex_lock(&local->iflist_mtx); |
0c2bef46 | 440 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
fab57a6c JB |
441 | mutex_unlock(&local->iflist_mtx); |
442 | synchronize_net(); | |
55de908a JB |
443 | drv_remove_interface(local, sdata); |
444 | kfree(sdata); | |
8b305780 | 445 | return ret; |
55de908a JB |
446 | } |
447 | ||
42bd20d9 AE |
448 | skb_queue_head_init(&sdata->skb_queue); |
449 | INIT_WORK(&sdata->work, ieee80211_iface_work); | |
450 | ||
8b305780 | 451 | return 0; |
4b6f1dd6 JB |
452 | } |
453 | ||
3c3e21e7 | 454 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
455 | { |
456 | struct ieee80211_sub_if_data *sdata; | |
457 | ||
30686bf7 | 458 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
459 | return; |
460 | ||
8b305780 JB |
461 | ASSERT_RTNL(); |
462 | ||
685fb72b | 463 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 464 | |
685fb72b JB |
465 | sdata = rcu_dereference_protected(local->monitor_sdata, |
466 | lockdep_is_held(&local->iflist_mtx)); | |
8b305780 JB |
467 | if (!sdata) { |
468 | mutex_unlock(&local->iflist_mtx); | |
469 | return; | |
470 | } | |
4b6f1dd6 | 471 | |
0c2bef46 | 472 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
8b305780 JB |
473 | mutex_unlock(&local->iflist_mtx); |
474 | ||
4b6f1dd6 JB |
475 | synchronize_net(); |
476 | ||
34a3740d | 477 | mutex_lock(&local->mtx); |
55de908a | 478 | ieee80211_vif_release_channel(sdata); |
34a3740d | 479 | mutex_unlock(&local->mtx); |
55de908a | 480 | |
4b6f1dd6 JB |
481 | drv_remove_interface(local, sdata); |
482 | ||
483 | kfree(sdata); | |
484 | } | |
485 | ||
34d4bc4d JB |
486 | /* |
487 | * NOTE: Be very careful when changing this function, it must NOT return | |
488 | * an error on interface type changes that have been pre-checked, so most | |
489 | * checks should be in ieee80211_check_concurrent_iface. | |
490 | */ | |
f142c6b9 | 491 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 492 | { |
f142c6b9 JB |
493 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
494 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
495 | struct ieee80211_local *local = sdata->local; |
496 | struct sta_info *sta; | |
497 | u32 changed = 0; | |
498 | int res; | |
499 | u32 hw_reconf_flags = 0; | |
500 | ||
0d143fe1 JB |
501 | switch (sdata->vif.type) { |
502 | case NL80211_IFTYPE_WDS: | |
503 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
504 | return -ENOLINK; | |
505 | break; | |
665c93a9 JB |
506 | case NL80211_IFTYPE_AP_VLAN: { |
507 | struct ieee80211_sub_if_data *master; | |
508 | ||
0d143fe1 JB |
509 | if (!sdata->bss) |
510 | return -ENOLINK; | |
665c93a9 | 511 | |
4e141dad | 512 | mutex_lock(&local->mtx); |
0d143fe1 | 513 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
4e141dad | 514 | mutex_unlock(&local->mtx); |
665c93a9 JB |
515 | |
516 | master = container_of(sdata->bss, | |
517 | struct ieee80211_sub_if_data, u.ap); | |
518 | sdata->control_port_protocol = | |
519 | master->control_port_protocol; | |
520 | sdata->control_port_no_encrypt = | |
521 | master->control_port_no_encrypt; | |
1351c5d3 JB |
522 | sdata->vif.cab_queue = master->vif.cab_queue; |
523 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
524 | sizeof(sdata->vif.hw_queue)); | |
2967e031 | 525 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; |
f9dca80b MK |
526 | |
527 | mutex_lock(&local->key_mtx); | |
528 | sdata->crypto_tx_tailroom_needed_cnt += | |
529 | master->crypto_tx_tailroom_needed_cnt; | |
530 | mutex_unlock(&local->key_mtx); | |
531 | ||
0d143fe1 | 532 | break; |
665c93a9 | 533 | } |
0d143fe1 JB |
534 | case NL80211_IFTYPE_AP: |
535 | sdata->bss = &sdata->u.ap; | |
536 | break; | |
537 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
538 | case NL80211_IFTYPE_STATION: |
539 | case NL80211_IFTYPE_MONITOR: | |
540 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 541 | case NL80211_IFTYPE_P2P_DEVICE: |
6e0bd6c3 | 542 | case NL80211_IFTYPE_OCB: |
cb3b7d87 | 543 | case NL80211_IFTYPE_NAN: |
0d143fe1 JB |
544 | /* no special treatment */ |
545 | break; | |
546 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 547 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
548 | case NL80211_IFTYPE_P2P_CLIENT: |
549 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
550 | /* cannot happen */ |
551 | WARN_ON(1); | |
552 | break; | |
553 | } | |
554 | ||
555 | if (local->open_count == 0) { | |
24487981 | 556 | res = drv_start(local); |
0d143fe1 JB |
557 | if (res) |
558 | goto err_del_bss; | |
e8975581 JB |
559 | /* we're brought up, everything changes */ |
560 | hw_reconf_flags = ~0; | |
1f87f7d3 | 561 | ieee80211_led_radio(local, true); |
67408c8c JB |
562 | ieee80211_mod_tpt_led_trig(local, |
563 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
564 | } |
565 | ||
566 | /* | |
bf533e0b JB |
567 | * Copy the hopefully now-present MAC address to |
568 | * this interface, if it has the special null one. | |
0d143fe1 | 569 | */ |
f142c6b9 | 570 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
571 | memcpy(dev->dev_addr, |
572 | local->hw.wiphy->perm_addr, | |
573 | ETH_ALEN); | |
574 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
575 | ||
576 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
577 | res = -EADDRNOTAVAIL; |
578 | goto err_stop; | |
0adc23f5 | 579 | } |
0d143fe1 JB |
580 | } |
581 | ||
0d143fe1 JB |
582 | switch (sdata->vif.type) { |
583 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
584 | /* no need to tell driver, but set carrier and chanctx */ |
585 | if (rtnl_dereference(sdata->bss->beacon)) { | |
586 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 587 | netif_carrier_on(dev); |
4d76d21b | 588 | } else { |
3edaf3e6 | 589 | netif_carrier_off(dev); |
4d76d21b | 590 | } |
0d143fe1 JB |
591 | break; |
592 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 593 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
594 | local->cooked_mntrs++; |
595 | break; | |
596 | } | |
597 | ||
d8212184 | 598 | if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { |
31eba5bc FF |
599 | res = drv_add_interface(local, sdata); |
600 | if (res) | |
601 | goto err_stop; | |
602 | } else if (local->monitors == 0 && local->open_count == 0) { | |
075e0847 JB |
603 | res = ieee80211_add_virtual_monitor(local); |
604 | if (res) | |
605 | goto err_stop; | |
606 | } | |
607 | ||
0d143fe1 JB |
608 | /* must be before the call to ieee80211_configure_filter */ |
609 | local->monitors++; | |
e8975581 | 610 | if (local->monitors == 1) { |
0869aea0 JB |
611 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
612 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 613 | } |
0d143fe1 | 614 | |
85416a4f | 615 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 616 | ieee80211_configure_filter(local); |
801d929c FF |
617 | mutex_lock(&local->mtx); |
618 | ieee80211_recalc_idle(local); | |
619 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
620 | |
621 | netif_carrier_on(dev); | |
0d143fe1 | 622 | break; |
0d143fe1 | 623 | default: |
34d4bc4d | 624 | if (coming_up) { |
075e0847 JB |
625 | ieee80211_del_virtual_monitor(local); |
626 | ||
7b7eab6f | 627 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
628 | if (res) |
629 | goto err_stop; | |
a9865538 JB |
630 | res = ieee80211_check_queues(sdata, |
631 | ieee80211_vif_type_p2p(&sdata->vif)); | |
3a25a8c8 JB |
632 | if (res) |
633 | goto err_del_interface; | |
34d4bc4d | 634 | } |
0d143fe1 | 635 | |
29cbe68c | 636 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 637 | local->fif_pspoll++; |
7be5086d | 638 | local->fif_probe_req++; |
e3b90ca2 | 639 | |
e3b90ca2 | 640 | ieee80211_configure_filter(local); |
7be5086d JB |
641 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
642 | local->fif_probe_req++; | |
a3c9aa51 | 643 | } |
e3b90ca2 | 644 | |
708d50ed AB |
645 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && |
646 | sdata->vif.type != NL80211_IFTYPE_NAN) | |
f142c6b9 | 647 | changed |= ieee80211_reset_erp_info(sdata); |
0d143fe1 | 648 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 649 | |
c405c629 JB |
650 | switch (sdata->vif.type) { |
651 | case NL80211_IFTYPE_STATION: | |
652 | case NL80211_IFTYPE_ADHOC: | |
653 | case NL80211_IFTYPE_AP: | |
654 | case NL80211_IFTYPE_MESH_POINT: | |
6e0bd6c3 | 655 | case NL80211_IFTYPE_OCB: |
0d143fe1 | 656 | netif_carrier_off(dev); |
c405c629 | 657 | break; |
1411af15 | 658 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 659 | case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d87 | 660 | case NL80211_IFTYPE_NAN: |
1411af15 | 661 | break; |
c405c629 | 662 | default: |
a2310824 JB |
663 | /* not reached */ |
664 | WARN_ON(1); | |
c405c629 | 665 | } |
59034591 EP |
666 | |
667 | /* | |
cec66283 | 668 | * Set default queue parameters so drivers don't |
59034591 | 669 | * need to initialise the hardware if the hardware |
cec66283 JB |
670 | * doesn't start up with sane defaults. |
671 | * Enable QoS for anything but station interfaces. | |
59034591 | 672 | */ |
cec66283 JB |
673 | ieee80211_set_wmm_default(sdata, true, |
674 | sdata->vif.type != NL80211_IFTYPE_STATION); | |
0d143fe1 JB |
675 | } |
676 | ||
2d2080c3 JB |
677 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
678 | ||
f64331d5 JB |
679 | switch (sdata->vif.type) { |
680 | case NL80211_IFTYPE_WDS: | |
0d143fe1 JB |
681 | /* Create STA entry for the WDS peer */ |
682 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
683 | GFP_KERNEL); | |
684 | if (!sta) { | |
685 | res = -ENOMEM; | |
686 | goto err_del_interface; | |
687 | } | |
688 | ||
83d5cc01 JB |
689 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
690 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
691 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
692 | |
693 | res = sta_info_insert(sta); | |
694 | if (res) { | |
695 | /* STA has been freed */ | |
696 | goto err_del_interface; | |
697 | } | |
1be7fe8d BJ |
698 | |
699 | rate_control_rate_init(sta); | |
1411af15 | 700 | netif_carrier_on(dev); |
f64331d5 JB |
701 | break; |
702 | case NL80211_IFTYPE_P2P_DEVICE: | |
f142c6b9 | 703 | rcu_assign_pointer(local->p2p_sdata, sdata); |
f64331d5 JB |
704 | break; |
705 | case NL80211_IFTYPE_MONITOR: | |
706 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
707 | break; | |
708 | list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); | |
709 | break; | |
710 | default: | |
711 | break; | |
0d143fe1 JB |
712 | } |
713 | ||
0d143fe1 JB |
714 | /* |
715 | * set_multicast_list will be invoked by the networking core | |
716 | * which will check whether any increments here were done in | |
717 | * error and sync them down to the hardware as filter flags. | |
718 | */ | |
719 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
720 | atomic_inc(&local->iff_allmultis); | |
721 | ||
34d4bc4d JB |
722 | if (coming_up) |
723 | local->open_count++; | |
724 | ||
59034591 | 725 | if (hw_reconf_flags) |
e8975581 | 726 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 727 | |
4a733ef1 | 728 | ieee80211_recalc_ps(local); |
965bedad | 729 | |
2b436312 | 730 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
7d65f829 JB |
731 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
732 | local->ops->wake_tx_queue) { | |
2b436312 | 733 | /* XXX: for AP_VLAN, actually track AP queues */ |
89e9bfc4 CL |
734 | if (dev) |
735 | netif_tx_start_all_queues(dev); | |
2b436312 | 736 | } else if (dev) { |
2b730daa JB |
737 | unsigned long flags; |
738 | int n_acs = IEEE80211_NUM_ACS; | |
739 | int ac; | |
740 | ||
741 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
742 | n_acs = 1; | |
743 | ||
744 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
745 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
746 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
747 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
748 | for (ac = 0; ac < n_acs; ac++) { | |
749 | int ac_queue = sdata->vif.hw_queue[ac]; | |
750 | ||
751 | if (local->queue_stop_reasons[ac_queue] == 0 && | |
752 | skb_queue_empty(&local->pending[ac_queue])) | |
753 | netif_start_subqueue(dev, ac); | |
754 | } | |
755 | } | |
756 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
757 | } | |
0d143fe1 JB |
758 | |
759 | return 0; | |
760 | err_del_interface: | |
7b7eab6f | 761 | drv_remove_interface(local, sdata); |
0d143fe1 | 762 | err_stop: |
24487981 JB |
763 | if (!local->open_count) |
764 | drv_stop(local); | |
0d143fe1 JB |
765 | err_del_bss: |
766 | sdata->bss = NULL; | |
4e141dad MK |
767 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
768 | mutex_lock(&local->mtx); | |
0d143fe1 | 769 | list_del(&sdata->u.vlan.list); |
4e141dad MK |
770 | mutex_unlock(&local->mtx); |
771 | } | |
4d6c36fa | 772 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 773 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
774 | return res; |
775 | } | |
776 | ||
34d4bc4d | 777 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
778 | { |
779 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
780 | int err; |
781 | ||
782 | /* fail early if user set an invalid address */ | |
2fcf2824 | 783 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
784 | return -EADDRNOTAVAIL; |
785 | ||
786 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
787 | if (err) | |
788 | return err; | |
789 | ||
f142c6b9 | 790 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
791 | } |
792 | ||
793 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
794 | bool going_down) | |
795 | { | |
53168215 | 796 | struct ieee80211_sub_if_data *txq_sdata = sdata; |
0d143fe1 | 797 | struct ieee80211_local *local = sdata->local; |
fa962b92 | 798 | struct fq *fq = &local->fq; |
5061b0c2 JB |
799 | unsigned long flags; |
800 | struct sk_buff *skb, *tmp; | |
e8975581 | 801 | u32 hw_reconf_flags = 0; |
09f4114e | 802 | int i, flushed; |
397a7a24 | 803 | struct ps_data *ps; |
d2859df5 | 804 | struct cfg80211_chan_def chandef; |
46238845 | 805 | bool cancel_scan; |
167e33f4 | 806 | struct cfg80211_nan_func *func; |
0d143fe1 | 807 | |
c29acf20 RM |
808 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
809 | ||
46238845 JB |
810 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
811 | if (cancel_scan) | |
352ffad6 BC |
812 | ieee80211_scan_cancel(local); |
813 | ||
0d143fe1 JB |
814 | /* |
815 | * Stop TX on this interface first. | |
816 | */ | |
f142c6b9 JB |
817 | if (sdata->dev) |
818 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 819 | |
c8f994ee | 820 | ieee80211_roc_purge(local, sdata); |
af6b6374 | 821 | |
8ffcc704 EG |
822 | switch (sdata->vif.type) { |
823 | case NL80211_IFTYPE_STATION: | |
572078be | 824 | ieee80211_mgd_stop(sdata); |
8ffcc704 EG |
825 | break; |
826 | case NL80211_IFTYPE_ADHOC: | |
cd7760e6 | 827 | ieee80211_ibss_stop(sdata); |
8ffcc704 EG |
828 | break; |
829 | case NL80211_IFTYPE_AP: | |
830 | cancel_work_sync(&sdata->u.ap.request_smps_work); | |
831 | break; | |
f64331d5 JB |
832 | case NL80211_IFTYPE_MONITOR: |
833 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
834 | break; | |
835 | list_del_rcu(&sdata->u.mntr.list); | |
836 | break; | |
8ffcc704 EG |
837 | default: |
838 | break; | |
839 | } | |
cd7760e6 | 840 | |
0d143fe1 JB |
841 | /* |
842 | * Remove all stations associated with this interface. | |
843 | * | |
844 | * This must be done before calling ops->remove_interface() | |
845 | * because otherwise we can later invoke ops->sta_notify() | |
846 | * whenever the STAs are removed, and that invalidates driver | |
847 | * assumptions about always getting a vif pointer that is valid | |
848 | * (because if we remove a STA after ops->remove_interface() | |
849 | * the driver will have removed the vif info already!) | |
850 | * | |
5eb8f4d7 JB |
851 | * In WDS mode a station must exist here and be flushed, for |
852 | * AP_VLANs stations may exist since there's nothing else that | |
853 | * would have removed them, but in other modes there shouldn't | |
854 | * be any stations. | |
0d143fe1 | 855 | */ |
d34ba216 | 856 | flushed = sta_info_flush(sdata); |
5eb8f4d7 JB |
857 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
858 | ((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || | |
859 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1))); | |
0d143fe1 | 860 | |
df140465 | 861 | /* don't count this interface for allmulti while it is down */ |
0d143fe1 JB |
862 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
863 | atomic_dec(&local->iff_allmultis); | |
864 | ||
7be5086d | 865 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 866 | local->fif_pspoll--; |
7be5086d JB |
867 | local->fif_probe_req--; |
868 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
869 | local->fif_probe_req--; | |
870 | } | |
e3b90ca2 | 871 | |
f142c6b9 JB |
872 | if (sdata->dev) { |
873 | netif_addr_lock_bh(sdata->dev); | |
874 | spin_lock_bh(&local->filter_lock); | |
875 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
876 | sdata->dev->addr_len); | |
877 | spin_unlock_bh(&local->filter_lock); | |
878 | netif_addr_unlock_bh(sdata->dev); | |
f142c6b9 | 879 | } |
3ac64bee | 880 | |
7cbf0ba5 VN |
881 | del_timer_sync(&local->dynamic_ps_timer); |
882 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 883 | |
04ecd257 | 884 | cancel_work_sync(&sdata->recalc_smps); |
dbd72850 | 885 | sdata_lock(sdata); |
59af6928 | 886 | mutex_lock(&local->mtx); |
73da7d5b | 887 | sdata->vif.csa_active = false; |
0c21e632 LC |
888 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
889 | sdata->u.mgd.csa_waiting_bcn = false; | |
a46992b4 LC |
890 | if (sdata->csa_block_tx) { |
891 | ieee80211_wake_vif_queues(local, sdata, | |
892 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
893 | sdata->csa_block_tx = false; | |
894 | } | |
59af6928 | 895 | mutex_unlock(&local->mtx); |
dbd72850 | 896 | sdata_unlock(sdata); |
59af6928 | 897 | |
73da7d5b | 898 | cancel_work_sync(&sdata->csa_finalize_work); |
04ecd257 | 899 | |
164eb02d SW |
900 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
901 | ||
902 | if (sdata->wdev.cac_started) { | |
d2859df5 | 903 | chandef = sdata->vif.bss_conf.chandef; |
b2c0958b | 904 | WARN_ON(local->suspended); |
34a3740d | 905 | mutex_lock(&local->mtx); |
164eb02d | 906 | ieee80211_vif_release_channel(sdata); |
34a3740d | 907 | mutex_unlock(&local->mtx); |
d2859df5 JD |
908 | cfg80211_cac_event(sdata->dev, &chandef, |
909 | NL80211_RADAR_CAC_ABORTED, | |
164eb02d SW |
910 | GFP_KERNEL); |
911 | } | |
912 | ||
0d143fe1 JB |
913 | /* APs need special treatment */ |
914 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 915 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
916 | |
917 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 918 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
919 | u.vlan.list) |
920 | dev_close(vlan->dev); | |
921 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
922 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
923 | /* remove all packets in parent bc_buf pointing to this dev */ | |
924 | ps = &sdata->bss->ps; | |
925 | ||
926 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
927 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
928 | if (skb->dev == sdata->dev) { | |
929 | __skb_unlink(skb, &ps->bc_buf); | |
930 | local->total_ps_buffered--; | |
931 | ieee80211_free_txskb(&local->hw, skb); | |
932 | } | |
933 | } | |
934 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
935 | } |
936 | ||
34d4bc4d JB |
937 | if (going_down) |
938 | local->open_count--; | |
0d143fe1 JB |
939 | |
940 | switch (sdata->vif.type) { | |
941 | case NL80211_IFTYPE_AP_VLAN: | |
53168215 JB |
942 | txq_sdata = container_of(sdata->bss, |
943 | struct ieee80211_sub_if_data, u.ap); | |
944 | ||
4e141dad | 945 | mutex_lock(&local->mtx); |
0d143fe1 | 946 | list_del(&sdata->u.vlan.list); |
4e141dad | 947 | mutex_unlock(&local->mtx); |
0c2bef46 | 948 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
10b68487 FF |
949 | /* see comment in the default case below */ |
950 | ieee80211_free_keys(sdata, true); | |
0d143fe1 JB |
951 | /* no need to tell driver */ |
952 | break; | |
953 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 954 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
955 | local->cooked_mntrs--; |
956 | break; | |
957 | } | |
958 | ||
959 | local->monitors--; | |
e8975581 | 960 | if (local->monitors == 0) { |
0869aea0 JB |
961 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
962 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 963 | } |
0d143fe1 | 964 | |
85416a4f | 965 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 966 | break; |
167e33f4 AB |
967 | case NL80211_IFTYPE_NAN: |
968 | /* clean all the functions */ | |
969 | spin_lock_bh(&sdata->u.nan.func_lock); | |
970 | ||
971 | idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) { | |
972 | idr_remove(&sdata->u.nan.function_inst_ids, i); | |
973 | cfg80211_free_nan_func(func); | |
974 | } | |
975 | idr_destroy(&sdata->u.nan.function_inst_ids); | |
976 | ||
977 | spin_unlock_bh(&sdata->u.nan.func_lock); | |
978 | break; | |
f142c6b9 JB |
979 | case NL80211_IFTYPE_P2P_DEVICE: |
980 | /* relies on synchronize_rcu() below */ | |
0c2bef46 | 981 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
f142c6b9 | 982 | /* fall through */ |
0d143fe1 | 983 | default: |
0b7dff4f | 984 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
985 | /* |
986 | * When we get here, the interface is marked down. | |
7907c7d3 | 987 | * Free the remaining keys, if there are any |
10b68487 FF |
988 | * (which can happen in AP mode if userspace sets |
989 | * keys before the interface is operating, and maybe | |
990 | * also in WDS mode) | |
75de9113 | 991 | * |
7907c7d3 JB |
992 | * Force the key freeing to always synchronize_net() |
993 | * to wait for the RX path in case it is using this | |
10b68487 | 994 | * interface enqueuing frames at this very time on |
75de9113 | 995 | * another CPU. |
35f20c14 | 996 | */ |
7907c7d3 | 997 | ieee80211_free_keys(sdata, true); |
1861b845 | 998 | skb_queue_purge(&sdata->skb_queue); |
0d143fe1 JB |
999 | } |
1000 | ||
1001 | sdata->bss = NULL; | |
1002 | ||
5061b0c2 JB |
1003 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
1004 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
1005 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
1006 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1007 | if (info->control.vif == &sdata->vif) { | |
1008 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 1009 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
1010 | } |
1011 | } | |
1012 | } | |
1013 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 | 1014 | |
53168215 JB |
1015 | if (txq_sdata->vif.txq) { |
1016 | struct txq_info *txqi = to_txq_info(txq_sdata->vif.txq); | |
1017 | ||
1018 | /* | |
1019 | * FIXME FIXME | |
1020 | * | |
1021 | * We really shouldn't purge the *entire* txqi since that | |
1022 | * contains frames for the other AP_VLANs (and possibly | |
1023 | * the AP itself) as well, but there's no API in FQ now | |
1024 | * to be able to filter. | |
1025 | */ | |
ba8c3d6f | 1026 | |
fa962b92 MK |
1027 | spin_lock_bh(&fq->lock); |
1028 | ieee80211_txq_purge(local, txqi); | |
1029 | spin_unlock_bh(&fq->lock); | |
ba8c3d6f FF |
1030 | } |
1031 | ||
b2c0958b JB |
1032 | if (local->open_count == 0) |
1033 | ieee80211_clear_tx_pending(local); | |
1034 | ||
1035 | /* | |
1036 | * If the interface goes down while suspended, presumably because | |
1037 | * the device was unplugged and that happens before our resume, | |
1038 | * then the driver is already unconfigured and the remainder of | |
1039 | * this function isn't needed. | |
1040 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
1041 | * memory allocated, it might expect teardown commands from | |
1042 | * mac80211 here? | |
1043 | */ | |
1044 | if (local->suspended) { | |
1045 | WARN_ON(local->wowlan); | |
1046 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
1047 | return; | |
1048 | } | |
1049 | ||
1050 | switch (sdata->vif.type) { | |
1051 | case NL80211_IFTYPE_AP_VLAN: | |
1052 | break; | |
1053 | case NL80211_IFTYPE_MONITOR: | |
1054 | if (local->monitors == 0) | |
1055 | ieee80211_del_virtual_monitor(local); | |
1056 | ||
1057 | mutex_lock(&local->mtx); | |
1058 | ieee80211_recalc_idle(local); | |
1059 | mutex_unlock(&local->mtx); | |
31eba5bc | 1060 | |
d8212184 | 1061 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
1062 | break; |
1063 | ||
1064 | /* fall through */ | |
b2c0958b JB |
1065 | default: |
1066 | if (going_down) | |
1067 | drv_remove_interface(local, sdata); | |
1068 | } | |
1069 | ||
4a733ef1 | 1070 | ieee80211_recalc_ps(local); |
b2c0958b | 1071 | |
46238845 JB |
1072 | if (cancel_scan) |
1073 | flush_delayed_work(&local->scan_work); | |
1074 | ||
b2c0958b JB |
1075 | if (local->open_count == 0) { |
1076 | ieee80211_stop_device(local); | |
1077 | ||
1078 | /* no reconfiguring after stop! */ | |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | /* do after stop to avoid reconfiguring when we stop anyway */ | |
1083 | ieee80211_configure_filter(local); | |
1084 | ieee80211_hw_config(local, hw_reconf_flags); | |
1085 | ||
1086 | if (local->monitors == local->open_count) | |
075e0847 | 1087 | ieee80211_add_virtual_monitor(local); |
34d4bc4d JB |
1088 | } |
1089 | ||
1090 | static int ieee80211_stop(struct net_device *dev) | |
1091 | { | |
1092 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1093 | ||
1094 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 1095 | |
0d143fe1 JB |
1096 | return 0; |
1097 | } | |
1098 | ||
1099 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
1100 | { | |
0d143fe1 | 1101 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 1102 | struct ieee80211_local *local = sdata->local; |
df140465 | 1103 | int allmulti, sdata_allmulti; |
0d143fe1 JB |
1104 | |
1105 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
0d143fe1 | 1106 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
0d143fe1 JB |
1107 | |
1108 | if (allmulti != sdata_allmulti) { | |
1109 | if (dev->flags & IFF_ALLMULTI) | |
1110 | atomic_inc(&local->iff_allmultis); | |
1111 | else | |
1112 | atomic_dec(&local->iff_allmultis); | |
1113 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
1114 | } | |
1115 | ||
3b8d81e0 | 1116 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 1117 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 1118 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 1119 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
1120 | } |
1121 | ||
75636525 JB |
1122 | /* |
1123 | * Called when the netdev is removed or, by the code below, before | |
1124 | * the interface type changes. | |
1125 | */ | |
f142c6b9 | 1126 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 JB |
1127 | { |
1128 | int i; | |
1129 | ||
75636525 | 1130 | /* free extra data */ |
7907c7d3 | 1131 | ieee80211_free_keys(sdata, false); |
75636525 | 1132 | |
aee14ceb JM |
1133 | ieee80211_debugfs_remove_netdev(sdata); |
1134 | ||
f0706e82 | 1135 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
1136 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
1137 | sdata->fragment_next = 0; | |
11a843b7 | 1138 | |
b9dcf712 | 1139 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
0371a08f | 1140 | ieee80211_mesh_teardown_sdata(sdata); |
f0706e82 JB |
1141 | } |
1142 | ||
f142c6b9 JB |
1143 | static void ieee80211_uninit(struct net_device *dev) |
1144 | { | |
1145 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
1146 | } | |
1147 | ||
cf0277e7 | 1148 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
f663dd9a | 1149 | struct sk_buff *skb, |
99932d4f DB |
1150 | void *accel_priv, |
1151 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1152 | { |
1153 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1154 | } | |
1155 | ||
bc1f4470 | 1156 | static void |
5a490510 JB |
1157 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
1158 | { | |
1159 | int i; | |
1160 | ||
1161 | for_each_possible_cpu(i) { | |
1162 | const struct pcpu_sw_netstats *tstats; | |
1163 | u64 rx_packets, rx_bytes, tx_packets, tx_bytes; | |
1164 | unsigned int start; | |
1165 | ||
1166 | tstats = per_cpu_ptr(dev->tstats, i); | |
1167 | ||
1168 | do { | |
1169 | start = u64_stats_fetch_begin_irq(&tstats->syncp); | |
1170 | rx_packets = tstats->rx_packets; | |
1171 | tx_packets = tstats->tx_packets; | |
1172 | rx_bytes = tstats->rx_bytes; | |
1173 | tx_bytes = tstats->tx_bytes; | |
1174 | } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); | |
1175 | ||
1176 | stats->rx_packets += rx_packets; | |
1177 | stats->tx_packets += tx_packets; | |
1178 | stats->rx_bytes += rx_bytes; | |
1179 | stats->tx_bytes += tx_bytes; | |
1180 | } | |
5a490510 JB |
1181 | } |
1182 | ||
587e729e JB |
1183 | static const struct net_device_ops ieee80211_dataif_ops = { |
1184 | .ndo_open = ieee80211_open, | |
1185 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1186 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1187 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1188 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
47846c9b | 1189 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1190 | .ndo_select_queue = ieee80211_netdev_select_queue, |
5a490510 | 1191 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1192 | }; |
1193 | ||
cf0277e7 | 1194 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
f663dd9a | 1195 | struct sk_buff *skb, |
99932d4f DB |
1196 | void *accel_priv, |
1197 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1198 | { |
1199 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1200 | struct ieee80211_local *local = sdata->local; | |
1201 | struct ieee80211_hdr *hdr; | |
1202 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1203 | ||
32c5057b | 1204 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1205 | return 0; |
1206 | ||
1207 | if (skb->len < 4 || | |
b49bb574 | 1208 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1209 | return 0; /* doesn't matter, frame will be dropped */ |
1210 | ||
b49bb574 | 1211 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1212 | |
00e96dec | 1213 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1214 | } |
1215 | ||
587e729e JB |
1216 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1217 | .ndo_open = ieee80211_open, | |
1218 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1219 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1220 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1221 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
31eba5bc | 1222 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1223 | .ndo_select_queue = ieee80211_monitor_select_queue, |
5a490510 | 1224 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1225 | }; |
1226 | ||
5a490510 JB |
1227 | static void ieee80211_if_free(struct net_device *dev) |
1228 | { | |
1229 | free_percpu(dev->tstats); | |
5a490510 JB |
1230 | } |
1231 | ||
587e729e JB |
1232 | static void ieee80211_if_setup(struct net_device *dev) |
1233 | { | |
1234 | ether_setup(dev); | |
550fd08c | 1235 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1236 | dev->netdev_ops = &ieee80211_dataif_ops; |
cf124db5 DM |
1237 | dev->needs_free_netdev = true; |
1238 | dev->priv_destructor = ieee80211_if_free; | |
587e729e JB |
1239 | } |
1240 | ||
80a83cfc MK |
1241 | static void ieee80211_if_setup_no_queue(struct net_device *dev) |
1242 | { | |
1243 | ieee80211_if_setup(dev); | |
1244 | dev->priv_flags |= IFF_NO_QUEUE; | |
1245 | } | |
1246 | ||
1fa57d01 JB |
1247 | static void ieee80211_iface_work(struct work_struct *work) |
1248 | { | |
1249 | struct ieee80211_sub_if_data *sdata = | |
1250 | container_of(work, struct ieee80211_sub_if_data, work); | |
1251 | struct ieee80211_local *local = sdata->local; | |
1252 | struct sk_buff *skb; | |
344eec67 | 1253 | struct sta_info *sta; |
1fa57d01 JB |
1254 | |
1255 | if (!ieee80211_sdata_running(sdata)) | |
1256 | return; | |
1257 | ||
fc58c47e | 1258 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
1fa57d01 JB |
1259 | return; |
1260 | ||
4afaff17 | 1261 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1262 | return; |
1263 | ||
1264 | /* first process frames */ | |
1265 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1266 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1267 | ||
699cb58c JB |
1268 | if (ieee80211_is_action(mgmt->frame_control) && |
1269 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1270 | int len = skb->len; |
bed7ee6e | 1271 | |
a93e3644 | 1272 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1273 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1274 | if (sta) { |
1275 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1276 | case WLAN_ACTION_ADDBA_REQ: | |
1277 | ieee80211_process_addba_request( | |
1278 | local, sta, mgmt, len); | |
1279 | break; | |
1280 | case WLAN_ACTION_ADDBA_RESP: | |
1281 | ieee80211_process_addba_resp(local, sta, | |
1282 | mgmt, len); | |
1283 | break; | |
1284 | case WLAN_ACTION_DELBA: | |
1285 | ieee80211_process_delba(sdata, sta, | |
1286 | mgmt, len); | |
1287 | break; | |
1288 | default: | |
1289 | WARN_ON(1); | |
1290 | break; | |
1291 | } | |
1292 | } | |
a93e3644 | 1293 | mutex_unlock(&local->sta_mtx); |
23a1f8d4 SS |
1294 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1295 | mgmt->u.action.category == WLAN_CATEGORY_VHT) { | |
1296 | switch (mgmt->u.action.u.vht_group_notif.action_code) { | |
d2941df8 JB |
1297 | case WLAN_VHT_ACTION_OPMODE_NOTIF: { |
1298 | struct ieee80211_rx_status *status; | |
1299 | enum nl80211_band band; | |
1300 | u8 opmode; | |
1301 | ||
1302 | status = IEEE80211_SKB_RXCB(skb); | |
1303 | band = status->band; | |
1304 | opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; | |
1305 | ||
1306 | mutex_lock(&local->sta_mtx); | |
1307 | sta = sta_info_get_bss(sdata, mgmt->sa); | |
1308 | ||
1309 | if (sta) | |
1310 | ieee80211_vht_handle_opmode(sdata, sta, | |
1311 | opmode, | |
1312 | band); | |
1313 | ||
1314 | mutex_unlock(&local->sta_mtx); | |
1315 | break; | |
1316 | } | |
23a1f8d4 SS |
1317 | case WLAN_VHT_ACTION_GROUPID_MGMT: |
1318 | ieee80211_process_mu_groups(sdata, mgmt); | |
1319 | break; | |
1320 | default: | |
1321 | WARN_ON(1); | |
1322 | break; | |
1323 | } | |
344eec67 JB |
1324 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1325 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1326 | /* | |
1327 | * So the frame isn't mgmt, but frame_control | |
1328 | * is at the right place anyway, of course, so | |
1329 | * the if statement is correct. | |
1330 | * | |
1331 | * Warn if we have other data frame types here, | |
1332 | * they must not get here. | |
1333 | */ | |
1334 | WARN_ON(hdr->frame_control & | |
1335 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1336 | WARN_ON(!(hdr->seq_ctrl & | |
1337 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1338 | /* | |
1339 | * This was a fragment of a frame, received while | |
1340 | * a block-ack session was active. That cannot be | |
1341 | * right, so terminate the session. | |
1342 | */ | |
a93e3644 | 1343 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1344 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1345 | if (sta) { |
1346 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1347 | IEEE80211_QOS_CTL_TID_MASK; | |
1348 | ||
1349 | __ieee80211_stop_rx_ba_session( | |
1350 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1351 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1352 | true); | |
344eec67 | 1353 | } |
a93e3644 | 1354 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1355 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1356 | case NL80211_IFTYPE_STATION: |
1357 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1358 | break; | |
1359 | case NL80211_IFTYPE_ADHOC: | |
1360 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1361 | break; | |
1362 | case NL80211_IFTYPE_MESH_POINT: | |
1363 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1364 | break; | |
1365 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1366 | break; | |
1367 | default: | |
1368 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1369 | break; |
1370 | } | |
36b3a628 JB |
1371 | |
1372 | kfree_skb(skb); | |
1fa57d01 JB |
1373 | } |
1374 | ||
1375 | /* then other type-dependent work */ | |
1376 | switch (sdata->vif.type) { | |
1377 | case NL80211_IFTYPE_STATION: | |
1378 | ieee80211_sta_work(sdata); | |
1379 | break; | |
1380 | case NL80211_IFTYPE_ADHOC: | |
1381 | ieee80211_ibss_work(sdata); | |
1382 | break; | |
1383 | case NL80211_IFTYPE_MESH_POINT: | |
1384 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1385 | break; | |
1386 | ieee80211_mesh_work(sdata); | |
1387 | break; | |
239281f8 RL |
1388 | case NL80211_IFTYPE_OCB: |
1389 | ieee80211_ocb_work(sdata); | |
1390 | break; | |
1fa57d01 JB |
1391 | default: |
1392 | break; | |
1393 | } | |
1394 | } | |
1395 | ||
04ecd257 JB |
1396 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1397 | { | |
1398 | struct ieee80211_sub_if_data *sdata = | |
1399 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1400 | ||
1401 | ieee80211_recalc_smps(sdata); | |
1402 | } | |
1fa57d01 | 1403 | |
75636525 JB |
1404 | /* |
1405 | * Helper function to initialise an interface to a specific type. | |
1406 | */ | |
1407 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1408 | enum nl80211_iftype type) |
f0706e82 | 1409 | { |
239281f8 RL |
1410 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1411 | 0xff, 0xff, 0xff}; | |
1412 | ||
75636525 JB |
1413 | /* clear type-dependent union */ |
1414 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1415 | ||
1416 | /* and set some type-dependent values */ | |
1417 | sdata->vif.type = type; | |
2ca27bcf | 1418 | sdata->vif.p2p = false; |
60719ffd | 1419 | sdata->wdev.iftype = type; |
75636525 | 1420 | |
a621fa4d JB |
1421 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1422 | sdata->control_port_no_encrypt = false; | |
2475b1cc | 1423 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1424 | sdata->vif.bss_conf.idle = true; |
a621fa4d | 1425 | |
b53be792 SW |
1426 | sdata->noack_map = 0; |
1427 | ||
f142c6b9 JB |
1428 | /* only monitor/p2p-device differ */ |
1429 | if (sdata->dev) { | |
1430 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1431 | sdata->dev->type = ARPHRD_ETHER; | |
1432 | } | |
75636525 | 1433 | |
35f20c14 | 1434 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1435 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1436 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1437 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1438 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1439 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1440 | |
75636525 | 1441 | switch (type) { |
2ca27bcf JB |
1442 | case NL80211_IFTYPE_P2P_GO: |
1443 | type = NL80211_IFTYPE_AP; | |
1444 | sdata->vif.type = type; | |
1445 | sdata->vif.p2p = true; | |
1446 | /* fall through */ | |
05c914fe | 1447 | case NL80211_IFTYPE_AP: |
d012a605 | 1448 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1449 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
687da132 EG |
1450 | INIT_WORK(&sdata->u.ap.request_smps_work, |
1451 | ieee80211_request_smps_ap_work); | |
ad2d223a | 1452 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
687da132 | 1453 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
75636525 | 1454 | break; |
2ca27bcf JB |
1455 | case NL80211_IFTYPE_P2P_CLIENT: |
1456 | type = NL80211_IFTYPE_STATION; | |
1457 | sdata->vif.type = type; | |
1458 | sdata->vif.p2p = true; | |
1459 | /* fall through */ | |
05c914fe | 1460 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1461 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1462 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1463 | break; |
6e0bd6c3 | 1464 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1465 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1466 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1467 | break; |
46900298 | 1468 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1469 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1470 | ieee80211_ibss_setup_sdata(sdata); |
1471 | break; | |
05c914fe | 1472 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1473 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1474 | ieee80211_mesh_init_sdata(sdata); | |
1475 | break; | |
05c914fe | 1476 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1477 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1478 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
d8212184 | 1479 | sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | |
75636525 JB |
1480 | MONITOR_FLAG_OTHER_BSS; |
1481 | break; | |
05c914fe | 1482 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1483 | sdata->vif.bss_conf.bssid = NULL; |
1484 | break; | |
167e33f4 AB |
1485 | case NL80211_IFTYPE_NAN: |
1486 | idr_init(&sdata->u.nan.function_inst_ids); | |
1487 | spin_lock_init(&sdata->u.nan.func_lock); | |
1488 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
1489 | break; | |
05c914fe | 1490 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1491 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1492 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1493 | break; |
05c914fe | 1494 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1495 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1496 | BUG(); |
1497 | break; | |
1498 | } | |
1499 | ||
1500 | ieee80211_debugfs_add_netdev(sdata); | |
1501 | } | |
1502 | ||
34d4bc4d JB |
1503 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1504 | enum nl80211_iftype type) | |
1505 | { | |
1506 | struct ieee80211_local *local = sdata->local; | |
1507 | int ret, err; | |
2ca27bcf JB |
1508 | enum nl80211_iftype internal_type = type; |
1509 | bool p2p = false; | |
34d4bc4d JB |
1510 | |
1511 | ASSERT_RTNL(); | |
1512 | ||
1513 | if (!local->ops->change_interface) | |
1514 | return -EBUSY; | |
1515 | ||
1516 | switch (sdata->vif.type) { | |
1517 | case NL80211_IFTYPE_AP: | |
1518 | case NL80211_IFTYPE_STATION: | |
1519 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1520 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1521 | /* |
1522 | * Could maybe also all others here? | |
1523 | * Just not sure how that interacts | |
1524 | * with the RX/config path e.g. for | |
1525 | * mesh. | |
1526 | */ | |
1527 | break; | |
1528 | default: | |
1529 | return -EBUSY; | |
1530 | } | |
1531 | ||
1532 | switch (type) { | |
1533 | case NL80211_IFTYPE_AP: | |
1534 | case NL80211_IFTYPE_STATION: | |
1535 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1536 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1537 | /* |
1538 | * Could probably support everything | |
1539 | * but WDS here (WDS do_open can fail | |
1540 | * under memory pressure, which this | |
1541 | * code isn't prepared to handle). | |
1542 | */ | |
1543 | break; | |
2ca27bcf JB |
1544 | case NL80211_IFTYPE_P2P_CLIENT: |
1545 | p2p = true; | |
1546 | internal_type = NL80211_IFTYPE_STATION; | |
1547 | break; | |
1548 | case NL80211_IFTYPE_P2P_GO: | |
1549 | p2p = true; | |
1550 | internal_type = NL80211_IFTYPE_AP; | |
1551 | break; | |
34d4bc4d JB |
1552 | default: |
1553 | return -EBUSY; | |
1554 | } | |
1555 | ||
2ca27bcf | 1556 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1557 | if (ret) |
1558 | return ret; | |
1559 | ||
1560 | ieee80211_do_stop(sdata, false); | |
1561 | ||
f142c6b9 | 1562 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1563 | |
2ca27bcf | 1564 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1565 | if (ret) |
a9865538 | 1566 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1567 | |
3a25a8c8 JB |
1568 | /* |
1569 | * Ignore return value here, there's not much we can do since | |
1570 | * the driver changed the interface type internally already. | |
1571 | * The warnings will hopefully make driver authors fix it :-) | |
1572 | */ | |
a9865538 | 1573 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1574 | |
34d4bc4d JB |
1575 | ieee80211_setup_sdata(sdata, type); |
1576 | ||
f142c6b9 | 1577 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1578 | WARN(err, "type change: do_open returned %d", err); |
1579 | ||
1580 | return ret; | |
1581 | } | |
1582 | ||
f3947e2d | 1583 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1584 | enum nl80211_iftype type) |
75636525 | 1585 | { |
34d4bc4d JB |
1586 | int ret; |
1587 | ||
f3947e2d JB |
1588 | ASSERT_RTNL(); |
1589 | ||
2ca27bcf | 1590 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1591 | return 0; |
1592 | ||
34d4bc4d JB |
1593 | if (ieee80211_sdata_running(sdata)) { |
1594 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1595 | if (ret) | |
1596 | return ret; | |
1597 | } else { | |
1598 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1599 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1600 | ieee80211_setup_sdata(sdata, type); |
1601 | } | |
75636525 JB |
1602 | |
1603 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1604 | if (type == NL80211_IFTYPE_STATION) |
1605 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1606 | |
1607 | return 0; | |
f0706e82 JB |
1608 | } |
1609 | ||
fa9029f8 | 1610 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1611 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1612 | { |
1613 | struct ieee80211_sub_if_data *sdata; | |
1614 | u64 mask, start, addr, val, inc; | |
1615 | u8 *m; | |
1616 | u8 tmp_addr[ETH_ALEN]; | |
1617 | int i; | |
1618 | ||
1619 | /* default ... something at least */ | |
f142c6b9 | 1620 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1621 | |
1622 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1623 | local->hw.wiphy->n_addresses <= 1) | |
1624 | return; | |
1625 | ||
fa9029f8 JB |
1626 | mutex_lock(&local->iflist_mtx); |
1627 | ||
1628 | switch (type) { | |
1629 | case NL80211_IFTYPE_MONITOR: | |
1630 | /* doesn't matter */ | |
1631 | break; | |
1632 | case NL80211_IFTYPE_WDS: | |
1633 | case NL80211_IFTYPE_AP_VLAN: | |
1634 | /* match up with an AP interface */ | |
1635 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1636 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1637 | continue; | |
f142c6b9 | 1638 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1639 | break; |
1640 | } | |
1641 | /* keep default if no AP interface present */ | |
1642 | break; | |
6d71117a JB |
1643 | case NL80211_IFTYPE_P2P_CLIENT: |
1644 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1645 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1646 | list_for_each_entry(sdata, &local->interfaces, list) { |
1647 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1648 | continue; | |
1649 | if (!ieee80211_sdata_running(sdata)) | |
1650 | continue; | |
1651 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1652 | goto out_unlock; | |
1653 | } | |
1654 | } | |
1655 | /* otherwise fall through */ | |
fa9029f8 JB |
1656 | default: |
1657 | /* assign a new address if possible -- try n_addresses first */ | |
1658 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1659 | bool used = false; | |
1660 | ||
1661 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1662 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1663 | sdata->vif.addr)) { | |
fa9029f8 JB |
1664 | used = true; |
1665 | break; | |
1666 | } | |
1667 | } | |
1668 | ||
1669 | if (!used) { | |
f142c6b9 | 1670 | memcpy(perm_addr, |
fa9029f8 JB |
1671 | local->hw.wiphy->addresses[i].addr, |
1672 | ETH_ALEN); | |
1673 | break; | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | /* try mask if available */ | |
1678 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1679 | break; | |
1680 | ||
1681 | m = local->hw.wiphy->addr_mask; | |
1682 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1683 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1684 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1685 | ||
1686 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1687 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1688 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1689 | break; |
1690 | } | |
1691 | ||
ac20976d HS |
1692 | /* |
1693 | * Pick address of existing interface in case user changed | |
1694 | * MAC address manually, default to perm_addr. | |
1695 | */ | |
fa9029f8 | 1696 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1697 | list_for_each_entry(sdata, &local->interfaces, list) { |
1698 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1699 | continue; | |
1700 | m = sdata->vif.addr; | |
1701 | break; | |
1702 | } | |
fa9029f8 JB |
1703 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1704 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1705 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1706 | ||
1707 | inc = 1ULL<<__ffs64(mask); | |
1708 | val = (start & mask); | |
1709 | addr = (start & ~mask) | (val & mask); | |
1710 | do { | |
1711 | bool used = false; | |
1712 | ||
1713 | tmp_addr[5] = addr >> 0*8; | |
1714 | tmp_addr[4] = addr >> 1*8; | |
1715 | tmp_addr[3] = addr >> 2*8; | |
1716 | tmp_addr[2] = addr >> 3*8; | |
1717 | tmp_addr[1] = addr >> 4*8; | |
1718 | tmp_addr[0] = addr >> 5*8; | |
1719 | ||
1720 | val += inc; | |
1721 | ||
1722 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1723 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1724 | used = true; |
1725 | break; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | if (!used) { | |
f142c6b9 | 1730 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1731 | break; |
1732 | } | |
1733 | addr = (start & ~mask) | (val & mask); | |
1734 | } while (addr != start); | |
1735 | ||
1736 | break; | |
1737 | } | |
1738 | ||
6d71117a | 1739 | out_unlock: |
fa9029f8 JB |
1740 | mutex_unlock(&local->iflist_mtx); |
1741 | } | |
1742 | ||
3e122be0 | 1743 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 1744 | unsigned char name_assign_type, |
84efbb84 | 1745 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1746 | struct vif_params *params) |
f0706e82 | 1747 | { |
f142c6b9 | 1748 | struct net_device *ndev = NULL; |
f0706e82 | 1749 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 1750 | struct txq_info *txqi; |
80a83cfc | 1751 | void (*if_setup)(struct net_device *dev); |
75636525 | 1752 | int ret, i; |
ded81f6b | 1753 | int txqs = 1; |
f0706e82 JB |
1754 | |
1755 | ASSERT_RTNL(); | |
75636525 | 1756 | |
708d50ed | 1757 | if (type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN) { |
f142c6b9 JB |
1758 | struct wireless_dev *wdev; |
1759 | ||
1760 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1761 | GFP_KERNEL); | |
1762 | if (!sdata) | |
1763 | return -ENOMEM; | |
1764 | wdev = &sdata->wdev; | |
1765 | ||
1766 | sdata->dev = NULL; | |
1767 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1768 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1769 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1770 | } else { | |
ba8c3d6f FF |
1771 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
1772 | sizeof(void *)); | |
1773 | int txq_size = 0; | |
1774 | ||
1775 | if (local->ops->wake_tx_queue) | |
1776 | txq_size += sizeof(struct txq_info) + | |
1777 | local->hw.txq_data_size; | |
1778 | ||
80a83cfc MK |
1779 | if (local->ops->wake_tx_queue) |
1780 | if_setup = ieee80211_if_setup_no_queue; | |
1781 | else | |
1782 | if_setup = ieee80211_if_setup; | |
1783 | ||
f142c6b9 JB |
1784 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1785 | txqs = IEEE80211_NUM_ACS; | |
1786 | ||
ba8c3d6f | 1787 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 1788 | name, name_assign_type, |
80a83cfc | 1789 | if_setup, txqs, 1); |
f142c6b9 JB |
1790 | if (!ndev) |
1791 | return -ENOMEM; | |
1792 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1793 | ||
5a490510 JB |
1794 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1795 | if (!ndev->tstats) { | |
1796 | free_netdev(ndev); | |
1797 | return -ENOMEM; | |
1798 | } | |
1799 | ||
f142c6b9 JB |
1800 | ndev->needed_headroom = local->tx_headroom + |
1801 | 4*6 /* four MAC addresses */ | |
1802 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1803 | + 6 /* mesh */ | |
1804 | + 8 /* rfc1042/bridge tunnel */ | |
1805 | - ETH_HLEN /* ethernet hard_header_len */ | |
1806 | + IEEE80211_ENCRYPT_HEADROOM; | |
1807 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1808 | ||
1809 | ret = dev_alloc_name(ndev, ndev->name); | |
1810 | if (ret < 0) { | |
e6436be2 | 1811 | ieee80211_if_free(ndev); |
c7a61cba | 1812 | free_netdev(ndev); |
f142c6b9 JB |
1813 | return ret; |
1814 | } | |
1815 | ||
1816 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
b5dfae02 BG |
1817 | if (params && is_valid_ether_addr(params->macaddr)) |
1818 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); | |
1819 | else | |
1820 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1821 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1822 | ||
1823 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1824 | sdata = netdev_priv(ndev); | |
1825 | ndev->ieee80211_ptr = &sdata->wdev; | |
1826 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1827 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1828 | ||
ba8c3d6f FF |
1829 | if (txq_size) { |
1830 | txqi = netdev_priv(ndev) + size; | |
fa962b92 | 1831 | ieee80211_txq_init(sdata, NULL, txqi, 0); |
ba8c3d6f FF |
1832 | } |
1833 | ||
f142c6b9 JB |
1834 | sdata->dev = ndev; |
1835 | } | |
75636525 JB |
1836 | |
1837 | /* initialise type-independent data */ | |
f0706e82 | 1838 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1839 | sdata->local = local; |
75636525 JB |
1840 | |
1841 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1842 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1843 | ||
1844 | INIT_LIST_HEAD(&sdata->key_list); | |
1845 | ||
164eb02d SW |
1846 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1847 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1848 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1849 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1850 | |
57fbcce3 | 1851 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
37eb0b16 JM |
1852 | struct ieee80211_supported_band *sband; |
1853 | sband = local->hw.wiphy->bands[i]; | |
1854 | sdata->rc_rateidx_mask[i] = | |
1855 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
b119ad6e LB |
1856 | if (sband) { |
1857 | __le16 cap; | |
1858 | u16 *vht_rate_mask; | |
1859 | ||
19468413 SW |
1860 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
1861 | sband->ht_cap.mcs.rx_mask, | |
1862 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1863 | |
1864 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; | |
1865 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; | |
1866 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); | |
1867 | } else { | |
19468413 SW |
1868 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
1869 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1870 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
1871 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); | |
1872 | } | |
37eb0b16 | 1873 | } |
75636525 | 1874 | |
3a25a8c8 JB |
1875 | ieee80211_set_default_queues(sdata); |
1876 | ||
1ea6f9c0 JB |
1877 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1878 | sdata->user_power_level = local->user_power_level; | |
1879 | ||
2475b1cc MS |
1880 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1881 | ||
75636525 JB |
1882 | /* setup type-dependent data */ |
1883 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1884 | |
f142c6b9 JB |
1885 | if (ndev) { |
1886 | if (params) { | |
1887 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1888 | if (type == NL80211_IFTYPE_STATION) | |
1889 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1890 | } | |
9bc383de | 1891 | |
f142c6b9 | 1892 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1893 | |
b7ffbd7e JB |
1894 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1895 | ||
9c22b4a3 JW |
1896 | /* MTU range: 256 - 2304 */ |
1897 | ndev->min_mtu = 256; | |
1898 | ndev->max_mtu = IEEE80211_MAX_DATA_LEN; | |
1899 | ||
f142c6b9 JB |
1900 | ret = register_netdevice(ndev); |
1901 | if (ret) { | |
cf124db5 | 1902 | free_netdev(ndev); |
f142c6b9 JB |
1903 | return ret; |
1904 | } | |
1905 | } | |
f0706e82 | 1906 | |
c771c9d8 | 1907 | mutex_lock(&local->iflist_mtx); |
79010420 | 1908 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1909 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1910 | |
84efbb84 JB |
1911 | if (new_wdev) |
1912 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1913 | |
f0706e82 | 1914 | return 0; |
f0706e82 JB |
1915 | } |
1916 | ||
f698d856 | 1917 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1918 | { |
f0706e82 | 1919 | ASSERT_RTNL(); |
11a843b7 | 1920 | |
c771c9d8 | 1921 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1922 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1923 | mutex_unlock(&sdata->local->iflist_mtx); |
1924 | ||
75636525 | 1925 | synchronize_rcu(); |
f142c6b9 JB |
1926 | |
1927 | if (sdata->dev) { | |
1928 | unregister_netdevice(sdata->dev); | |
1929 | } else { | |
1930 | cfg80211_unregister_wdev(&sdata->wdev); | |
835112b2 | 1931 | ieee80211_teardown_sdata(sdata); |
f142c6b9 JB |
1932 | kfree(sdata); |
1933 | } | |
1934 | } | |
1935 | ||
1936 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1937 | { | |
1938 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1939 | return; | |
1940 | ieee80211_do_stop(sdata, true); | |
f0706e82 JB |
1941 | } |
1942 | ||
75636525 | 1943 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
f0706e82 | 1944 | { |
75636525 | 1945 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1946 | LIST_HEAD(unreg_list); |
f142c6b9 | 1947 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1948 | |
1949 | ASSERT_RTNL(); | |
1950 | ||
d8d9008c JB |
1951 | /* Before destroying the interfaces, make sure they're all stopped so |
1952 | * that the hardware is stopped. Otherwise, the driver might still be | |
1953 | * iterating the interfaces during the shutdown, e.g. from a worker | |
1954 | * or from RX processing or similar, and if it does so (using atomic | |
1955 | * iteration) while we're manipulating the list, the iteration will | |
1956 | * crash. | |
1957 | * | |
1958 | * After this, the hardware should be stopped and the driver should | |
1959 | * have stopped all of its activities, so that we can do RCU-unaware | |
1960 | * manipulations of the interface list below. | |
c8aa22db | 1961 | */ |
d8d9008c JB |
1962 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
1963 | ||
1964 | WARN(local->open_count, "%s: open count remains %d\n", | |
1965 | wiphy_name(local->hw.wiphy), local->open_count); | |
c8aa22db | 1966 | |
efe117ab | 1967 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1968 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1969 | list_del(&sdata->list); | |
c771c9d8 | 1970 | |
f142c6b9 JB |
1971 | if (sdata->dev) |
1972 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1973 | else | |
1974 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1975 | } |
efe117ab ED |
1976 | mutex_unlock(&local->iflist_mtx); |
1977 | unregister_netdevice_many(&unreg_list); | |
f142c6b9 JB |
1978 | |
1979 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1980 | list_del(&sdata->list); | |
1981 | cfg80211_unregister_wdev(&sdata->wdev); | |
1982 | kfree(sdata); | |
1983 | } | |
f0706e82 | 1984 | } |
5cff20e6 | 1985 | |
47846c9b | 1986 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 1987 | unsigned long state, void *ptr) |
47846c9b | 1988 | { |
351638e7 | 1989 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
1990 | struct ieee80211_sub_if_data *sdata; |
1991 | ||
1992 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 1993 | return NOTIFY_DONE; |
47846c9b JB |
1994 | |
1995 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 1996 | return NOTIFY_DONE; |
47846c9b JB |
1997 | |
1998 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 1999 | return NOTIFY_DONE; |
47846c9b JB |
2000 | |
2001 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 2002 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 2003 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
2004 | |
2005 | return NOTIFY_OK; | |
47846c9b JB |
2006 | } |
2007 | ||
2008 | static struct notifier_block mac80211_netdev_notifier = { | |
2009 | .notifier_call = netdev_notify, | |
2010 | }; | |
2011 | ||
2012 | int ieee80211_iface_init(void) | |
2013 | { | |
2014 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
2015 | } | |
2016 | ||
2017 | void ieee80211_iface_exit(void) | |
2018 | { | |
2019 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
2020 | } | |
72f15d53 MB |
2021 | |
2022 | void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2023 | { | |
2024 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2025 | atomic_inc(&sdata->u.ap.num_mcast_sta); | |
2026 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2027 | atomic_inc(&sdata->u.vlan.num_mcast_sta); | |
2028 | } | |
2029 | ||
2030 | void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2031 | { | |
2032 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2033 | atomic_dec(&sdata->u.ap.num_mcast_sta); | |
2034 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2035 | atomic_dec(&sdata->u.vlan.num_mcast_sta); | |
2036 | } |