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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; | |
018f6fbf DK |
522 | sdata->control_port_over_nl80211 = |
523 | master->control_port_over_nl80211; | |
1351c5d3 JB |
524 | sdata->vif.cab_queue = master->vif.cab_queue; |
525 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
526 | sizeof(sdata->vif.hw_queue)); | |
2967e031 | 527 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; |
f9dca80b MK |
528 | |
529 | mutex_lock(&local->key_mtx); | |
530 | sdata->crypto_tx_tailroom_needed_cnt += | |
531 | master->crypto_tx_tailroom_needed_cnt; | |
532 | mutex_unlock(&local->key_mtx); | |
533 | ||
0d143fe1 | 534 | break; |
665c93a9 | 535 | } |
0d143fe1 JB |
536 | case NL80211_IFTYPE_AP: |
537 | sdata->bss = &sdata->u.ap; | |
538 | break; | |
539 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
540 | case NL80211_IFTYPE_STATION: |
541 | case NL80211_IFTYPE_MONITOR: | |
542 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 543 | case NL80211_IFTYPE_P2P_DEVICE: |
6e0bd6c3 | 544 | case NL80211_IFTYPE_OCB: |
cb3b7d87 | 545 | case NL80211_IFTYPE_NAN: |
0d143fe1 JB |
546 | /* no special treatment */ |
547 | break; | |
548 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 549 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
550 | case NL80211_IFTYPE_P2P_CLIENT: |
551 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
552 | /* cannot happen */ |
553 | WARN_ON(1); | |
554 | break; | |
555 | } | |
556 | ||
557 | if (local->open_count == 0) { | |
24487981 | 558 | res = drv_start(local); |
0d143fe1 JB |
559 | if (res) |
560 | goto err_del_bss; | |
e8975581 JB |
561 | /* we're brought up, everything changes */ |
562 | hw_reconf_flags = ~0; | |
1f87f7d3 | 563 | ieee80211_led_radio(local, true); |
67408c8c JB |
564 | ieee80211_mod_tpt_led_trig(local, |
565 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
566 | } |
567 | ||
568 | /* | |
bf533e0b JB |
569 | * Copy the hopefully now-present MAC address to |
570 | * this interface, if it has the special null one. | |
0d143fe1 | 571 | */ |
f142c6b9 | 572 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
573 | memcpy(dev->dev_addr, |
574 | local->hw.wiphy->perm_addr, | |
575 | ETH_ALEN); | |
576 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
577 | ||
578 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
579 | res = -EADDRNOTAVAIL; |
580 | goto err_stop; | |
0adc23f5 | 581 | } |
0d143fe1 JB |
582 | } |
583 | ||
0d143fe1 JB |
584 | switch (sdata->vif.type) { |
585 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
586 | /* no need to tell driver, but set carrier and chanctx */ |
587 | if (rtnl_dereference(sdata->bss->beacon)) { | |
588 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 589 | netif_carrier_on(dev); |
4d76d21b | 590 | } else { |
3edaf3e6 | 591 | netif_carrier_off(dev); |
4d76d21b | 592 | } |
0d143fe1 JB |
593 | break; |
594 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 595 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
596 | local->cooked_mntrs++; |
597 | break; | |
598 | } | |
599 | ||
d8212184 | 600 | if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { |
31eba5bc FF |
601 | res = drv_add_interface(local, sdata); |
602 | if (res) | |
603 | goto err_stop; | |
604 | } else if (local->monitors == 0 && local->open_count == 0) { | |
075e0847 JB |
605 | res = ieee80211_add_virtual_monitor(local); |
606 | if (res) | |
607 | goto err_stop; | |
608 | } | |
609 | ||
0d143fe1 JB |
610 | /* must be before the call to ieee80211_configure_filter */ |
611 | local->monitors++; | |
e8975581 | 612 | if (local->monitors == 1) { |
0869aea0 JB |
613 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
614 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 615 | } |
0d143fe1 | 616 | |
85416a4f | 617 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 618 | ieee80211_configure_filter(local); |
801d929c FF |
619 | mutex_lock(&local->mtx); |
620 | ieee80211_recalc_idle(local); | |
621 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
622 | |
623 | netif_carrier_on(dev); | |
0d143fe1 | 624 | break; |
0d143fe1 | 625 | default: |
34d4bc4d | 626 | if (coming_up) { |
075e0847 JB |
627 | ieee80211_del_virtual_monitor(local); |
628 | ||
7b7eab6f | 629 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
630 | if (res) |
631 | goto err_stop; | |
a9865538 JB |
632 | res = ieee80211_check_queues(sdata, |
633 | ieee80211_vif_type_p2p(&sdata->vif)); | |
3a25a8c8 JB |
634 | if (res) |
635 | goto err_del_interface; | |
34d4bc4d | 636 | } |
0d143fe1 | 637 | |
29cbe68c | 638 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 639 | local->fif_pspoll++; |
7be5086d | 640 | local->fif_probe_req++; |
e3b90ca2 | 641 | |
e3b90ca2 | 642 | ieee80211_configure_filter(local); |
7be5086d JB |
643 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
644 | local->fif_probe_req++; | |
a3c9aa51 | 645 | } |
e3b90ca2 | 646 | |
708d50ed AB |
647 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && |
648 | sdata->vif.type != NL80211_IFTYPE_NAN) | |
f142c6b9 | 649 | changed |= ieee80211_reset_erp_info(sdata); |
0d143fe1 | 650 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 651 | |
c405c629 JB |
652 | switch (sdata->vif.type) { |
653 | case NL80211_IFTYPE_STATION: | |
654 | case NL80211_IFTYPE_ADHOC: | |
655 | case NL80211_IFTYPE_AP: | |
656 | case NL80211_IFTYPE_MESH_POINT: | |
6e0bd6c3 | 657 | case NL80211_IFTYPE_OCB: |
0d143fe1 | 658 | netif_carrier_off(dev); |
c405c629 | 659 | break; |
1411af15 | 660 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 661 | case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d87 | 662 | case NL80211_IFTYPE_NAN: |
1411af15 | 663 | break; |
c405c629 | 664 | default: |
a2310824 JB |
665 | /* not reached */ |
666 | WARN_ON(1); | |
c405c629 | 667 | } |
59034591 EP |
668 | |
669 | /* | |
cec66283 | 670 | * Set default queue parameters so drivers don't |
59034591 | 671 | * need to initialise the hardware if the hardware |
cec66283 JB |
672 | * doesn't start up with sane defaults. |
673 | * Enable QoS for anything but station interfaces. | |
59034591 | 674 | */ |
cec66283 JB |
675 | ieee80211_set_wmm_default(sdata, true, |
676 | sdata->vif.type != NL80211_IFTYPE_STATION); | |
0d143fe1 JB |
677 | } |
678 | ||
2d2080c3 JB |
679 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
680 | ||
f64331d5 JB |
681 | switch (sdata->vif.type) { |
682 | case NL80211_IFTYPE_WDS: | |
0d143fe1 JB |
683 | /* Create STA entry for the WDS peer */ |
684 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
685 | GFP_KERNEL); | |
686 | if (!sta) { | |
687 | res = -ENOMEM; | |
688 | goto err_del_interface; | |
689 | } | |
690 | ||
83d5cc01 JB |
691 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
692 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
693 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
694 | |
695 | res = sta_info_insert(sta); | |
696 | if (res) { | |
697 | /* STA has been freed */ | |
698 | goto err_del_interface; | |
699 | } | |
1be7fe8d BJ |
700 | |
701 | rate_control_rate_init(sta); | |
1411af15 | 702 | netif_carrier_on(dev); |
f64331d5 JB |
703 | break; |
704 | case NL80211_IFTYPE_P2P_DEVICE: | |
f142c6b9 | 705 | rcu_assign_pointer(local->p2p_sdata, sdata); |
f64331d5 JB |
706 | break; |
707 | case NL80211_IFTYPE_MONITOR: | |
708 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) | |
709 | break; | |
710 | list_add_tail_rcu(&sdata->u.mntr.list, &local->mon_list); | |
711 | break; | |
712 | default: | |
713 | break; | |
0d143fe1 JB |
714 | } |
715 | ||
0d143fe1 JB |
716 | /* |
717 | * set_multicast_list will be invoked by the networking core | |
718 | * which will check whether any increments here were done in | |
719 | * error and sync them down to the hardware as filter flags. | |
720 | */ | |
721 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
722 | atomic_inc(&local->iff_allmultis); | |
723 | ||
34d4bc4d JB |
724 | if (coming_up) |
725 | local->open_count++; | |
726 | ||
59034591 | 727 | if (hw_reconf_flags) |
e8975581 | 728 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 729 | |
4a733ef1 | 730 | ieee80211_recalc_ps(local); |
965bedad | 731 | |
2b436312 | 732 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
7d65f829 JB |
733 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
734 | local->ops->wake_tx_queue) { | |
2b436312 | 735 | /* XXX: for AP_VLAN, actually track AP queues */ |
89e9bfc4 CL |
736 | if (dev) |
737 | netif_tx_start_all_queues(dev); | |
2b436312 | 738 | } else if (dev) { |
2b730daa JB |
739 | unsigned long flags; |
740 | int n_acs = IEEE80211_NUM_ACS; | |
741 | int ac; | |
742 | ||
743 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
744 | n_acs = 1; | |
745 | ||
746 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
747 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
748 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
749 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
750 | for (ac = 0; ac < n_acs; ac++) { | |
751 | int ac_queue = sdata->vif.hw_queue[ac]; | |
752 | ||
753 | if (local->queue_stop_reasons[ac_queue] == 0 && | |
754 | skb_queue_empty(&local->pending[ac_queue])) | |
755 | netif_start_subqueue(dev, ac); | |
756 | } | |
757 | } | |
758 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
759 | } | |
0d143fe1 JB |
760 | |
761 | return 0; | |
762 | err_del_interface: | |
7b7eab6f | 763 | drv_remove_interface(local, sdata); |
0d143fe1 | 764 | err_stop: |
24487981 JB |
765 | if (!local->open_count) |
766 | drv_stop(local); | |
0d143fe1 JB |
767 | err_del_bss: |
768 | sdata->bss = NULL; | |
4e141dad MK |
769 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
770 | mutex_lock(&local->mtx); | |
0d143fe1 | 771 | list_del(&sdata->u.vlan.list); |
4e141dad MK |
772 | mutex_unlock(&local->mtx); |
773 | } | |
4d6c36fa | 774 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 775 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
776 | return res; |
777 | } | |
778 | ||
34d4bc4d | 779 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
780 | { |
781 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
782 | int err; |
783 | ||
784 | /* fail early if user set an invalid address */ | |
2fcf2824 | 785 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
786 | return -EADDRNOTAVAIL; |
787 | ||
788 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
789 | if (err) | |
790 | return err; | |
791 | ||
f142c6b9 | 792 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
793 | } |
794 | ||
795 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
796 | bool going_down) | |
797 | { | |
0d143fe1 | 798 | struct ieee80211_local *local = sdata->local; |
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: | |
4e141dad | 942 | mutex_lock(&local->mtx); |
0d143fe1 | 943 | list_del(&sdata->u.vlan.list); |
4e141dad | 944 | mutex_unlock(&local->mtx); |
0c2bef46 | 945 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
10b68487 FF |
946 | /* see comment in the default case below */ |
947 | ieee80211_free_keys(sdata, true); | |
0d143fe1 JB |
948 | /* no need to tell driver */ |
949 | break; | |
950 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 951 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
952 | local->cooked_mntrs--; |
953 | break; | |
954 | } | |
955 | ||
956 | local->monitors--; | |
e8975581 | 957 | if (local->monitors == 0) { |
0869aea0 JB |
958 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
959 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 960 | } |
0d143fe1 | 961 | |
85416a4f | 962 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 963 | break; |
167e33f4 AB |
964 | case NL80211_IFTYPE_NAN: |
965 | /* clean all the functions */ | |
966 | spin_lock_bh(&sdata->u.nan.func_lock); | |
967 | ||
968 | idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, i) { | |
969 | idr_remove(&sdata->u.nan.function_inst_ids, i); | |
970 | cfg80211_free_nan_func(func); | |
971 | } | |
972 | idr_destroy(&sdata->u.nan.function_inst_ids); | |
973 | ||
974 | spin_unlock_bh(&sdata->u.nan.func_lock); | |
975 | break; | |
f142c6b9 JB |
976 | case NL80211_IFTYPE_P2P_DEVICE: |
977 | /* relies on synchronize_rcu() below */ | |
0c2bef46 | 978 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
f142c6b9 | 979 | /* fall through */ |
0d143fe1 | 980 | default: |
0b7dff4f | 981 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
982 | /* |
983 | * When we get here, the interface is marked down. | |
7907c7d3 | 984 | * Free the remaining keys, if there are any |
10b68487 FF |
985 | * (which can happen in AP mode if userspace sets |
986 | * keys before the interface is operating, and maybe | |
987 | * also in WDS mode) | |
75de9113 | 988 | * |
7907c7d3 JB |
989 | * Force the key freeing to always synchronize_net() |
990 | * to wait for the RX path in case it is using this | |
10b68487 | 991 | * interface enqueuing frames at this very time on |
75de9113 | 992 | * another CPU. |
35f20c14 | 993 | */ |
7907c7d3 | 994 | ieee80211_free_keys(sdata, true); |
1861b845 | 995 | skb_queue_purge(&sdata->skb_queue); |
0d143fe1 JB |
996 | } |
997 | ||
5061b0c2 JB |
998 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
999 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
1000 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
1001 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1002 | if (info->control.vif == &sdata->vif) { | |
1003 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 1004 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
1005 | } |
1006 | } | |
1007 | } | |
1008 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 | 1009 | |
2a9e2579 JB |
1010 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
1011 | ieee80211_txq_remove_vlan(local, sdata); | |
53168215 | 1012 | |
2a9e2579 | 1013 | sdata->bss = NULL; |
ba8c3d6f | 1014 | |
b2c0958b JB |
1015 | if (local->open_count == 0) |
1016 | ieee80211_clear_tx_pending(local); | |
1017 | ||
1018 | /* | |
1019 | * If the interface goes down while suspended, presumably because | |
1020 | * the device was unplugged and that happens before our resume, | |
1021 | * then the driver is already unconfigured and the remainder of | |
1022 | * this function isn't needed. | |
1023 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
1024 | * memory allocated, it might expect teardown commands from | |
1025 | * mac80211 here? | |
1026 | */ | |
1027 | if (local->suspended) { | |
1028 | WARN_ON(local->wowlan); | |
1029 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
1030 | return; | |
1031 | } | |
1032 | ||
1033 | switch (sdata->vif.type) { | |
1034 | case NL80211_IFTYPE_AP_VLAN: | |
1035 | break; | |
1036 | case NL80211_IFTYPE_MONITOR: | |
1037 | if (local->monitors == 0) | |
1038 | ieee80211_del_virtual_monitor(local); | |
1039 | ||
1040 | mutex_lock(&local->mtx); | |
1041 | ieee80211_recalc_idle(local); | |
1042 | mutex_unlock(&local->mtx); | |
31eba5bc | 1043 | |
d8212184 | 1044 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
1045 | break; |
1046 | ||
1047 | /* fall through */ | |
b2c0958b JB |
1048 | default: |
1049 | if (going_down) | |
1050 | drv_remove_interface(local, sdata); | |
1051 | } | |
1052 | ||
4a733ef1 | 1053 | ieee80211_recalc_ps(local); |
b2c0958b | 1054 | |
46238845 JB |
1055 | if (cancel_scan) |
1056 | flush_delayed_work(&local->scan_work); | |
1057 | ||
b2c0958b JB |
1058 | if (local->open_count == 0) { |
1059 | ieee80211_stop_device(local); | |
1060 | ||
1061 | /* no reconfiguring after stop! */ | |
1062 | return; | |
1063 | } | |
1064 | ||
1065 | /* do after stop to avoid reconfiguring when we stop anyway */ | |
1066 | ieee80211_configure_filter(local); | |
1067 | ieee80211_hw_config(local, hw_reconf_flags); | |
1068 | ||
1069 | if (local->monitors == local->open_count) | |
075e0847 | 1070 | ieee80211_add_virtual_monitor(local); |
34d4bc4d JB |
1071 | } |
1072 | ||
1073 | static int ieee80211_stop(struct net_device *dev) | |
1074 | { | |
1075 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1076 | ||
1077 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 1078 | |
0d143fe1 JB |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
1083 | { | |
0d143fe1 | 1084 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 1085 | struct ieee80211_local *local = sdata->local; |
df140465 | 1086 | int allmulti, sdata_allmulti; |
0d143fe1 JB |
1087 | |
1088 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
0d143fe1 | 1089 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
0d143fe1 JB |
1090 | |
1091 | if (allmulti != sdata_allmulti) { | |
1092 | if (dev->flags & IFF_ALLMULTI) | |
1093 | atomic_inc(&local->iff_allmultis); | |
1094 | else | |
1095 | atomic_dec(&local->iff_allmultis); | |
1096 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
1097 | } | |
1098 | ||
3b8d81e0 | 1099 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 1100 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 1101 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 1102 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
1103 | } |
1104 | ||
75636525 JB |
1105 | /* |
1106 | * Called when the netdev is removed or, by the code below, before | |
1107 | * the interface type changes. | |
1108 | */ | |
f142c6b9 | 1109 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 JB |
1110 | { |
1111 | int i; | |
1112 | ||
75636525 | 1113 | /* free extra data */ |
7907c7d3 | 1114 | ieee80211_free_keys(sdata, false); |
75636525 | 1115 | |
aee14ceb JM |
1116 | ieee80211_debugfs_remove_netdev(sdata); |
1117 | ||
f0706e82 | 1118 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
1119 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
1120 | sdata->fragment_next = 0; | |
11a843b7 | 1121 | |
b9dcf712 | 1122 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
0371a08f | 1123 | ieee80211_mesh_teardown_sdata(sdata); |
f0706e82 JB |
1124 | } |
1125 | ||
f142c6b9 JB |
1126 | static void ieee80211_uninit(struct net_device *dev) |
1127 | { | |
1128 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
1129 | } | |
1130 | ||
cf0277e7 | 1131 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
f663dd9a | 1132 | struct sk_buff *skb, |
4f49dec9 | 1133 | struct net_device *sb_dev, |
99932d4f | 1134 | select_queue_fallback_t fallback) |
cf0277e7 JB |
1135 | { |
1136 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1137 | } | |
1138 | ||
bc1f4470 | 1139 | static void |
5a490510 JB |
1140 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
1141 | { | |
1142 | int i; | |
1143 | ||
1144 | for_each_possible_cpu(i) { | |
1145 | const struct pcpu_sw_netstats *tstats; | |
1146 | u64 rx_packets, rx_bytes, tx_packets, tx_bytes; | |
1147 | unsigned int start; | |
1148 | ||
1149 | tstats = per_cpu_ptr(dev->tstats, i); | |
1150 | ||
1151 | do { | |
1152 | start = u64_stats_fetch_begin_irq(&tstats->syncp); | |
1153 | rx_packets = tstats->rx_packets; | |
1154 | tx_packets = tstats->tx_packets; | |
1155 | rx_bytes = tstats->rx_bytes; | |
1156 | tx_bytes = tstats->tx_bytes; | |
1157 | } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); | |
1158 | ||
1159 | stats->rx_packets += rx_packets; | |
1160 | stats->tx_packets += tx_packets; | |
1161 | stats->rx_bytes += rx_bytes; | |
1162 | stats->tx_bytes += tx_bytes; | |
1163 | } | |
5a490510 JB |
1164 | } |
1165 | ||
587e729e JB |
1166 | static const struct net_device_ops ieee80211_dataif_ops = { |
1167 | .ndo_open = ieee80211_open, | |
1168 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1169 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1170 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1171 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
47846c9b | 1172 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1173 | .ndo_select_queue = ieee80211_netdev_select_queue, |
5a490510 | 1174 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1175 | }; |
1176 | ||
cf0277e7 | 1177 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
f663dd9a | 1178 | struct sk_buff *skb, |
4f49dec9 | 1179 | struct net_device *sb_dev, |
99932d4f | 1180 | select_queue_fallback_t fallback) |
cf0277e7 JB |
1181 | { |
1182 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1183 | struct ieee80211_local *local = sdata->local; | |
1184 | struct ieee80211_hdr *hdr; | |
1185 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1186 | ||
32c5057b | 1187 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1188 | return 0; |
1189 | ||
1190 | if (skb->len < 4 || | |
b49bb574 | 1191 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1192 | return 0; /* doesn't matter, frame will be dropped */ |
1193 | ||
b49bb574 | 1194 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1195 | |
00e96dec | 1196 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1197 | } |
1198 | ||
587e729e JB |
1199 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1200 | .ndo_open = ieee80211_open, | |
1201 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1202 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1203 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1204 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
31eba5bc | 1205 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1206 | .ndo_select_queue = ieee80211_monitor_select_queue, |
5a490510 | 1207 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1208 | }; |
1209 | ||
5a490510 JB |
1210 | static void ieee80211_if_free(struct net_device *dev) |
1211 | { | |
1212 | free_percpu(dev->tstats); | |
5a490510 JB |
1213 | } |
1214 | ||
587e729e JB |
1215 | static void ieee80211_if_setup(struct net_device *dev) |
1216 | { | |
1217 | ether_setup(dev); | |
550fd08c | 1218 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1219 | dev->netdev_ops = &ieee80211_dataif_ops; |
cf124db5 DM |
1220 | dev->needs_free_netdev = true; |
1221 | dev->priv_destructor = ieee80211_if_free; | |
587e729e JB |
1222 | } |
1223 | ||
80a83cfc MK |
1224 | static void ieee80211_if_setup_no_queue(struct net_device *dev) |
1225 | { | |
1226 | ieee80211_if_setup(dev); | |
1227 | dev->priv_flags |= IFF_NO_QUEUE; | |
1228 | } | |
1229 | ||
1fa57d01 JB |
1230 | static void ieee80211_iface_work(struct work_struct *work) |
1231 | { | |
1232 | struct ieee80211_sub_if_data *sdata = | |
1233 | container_of(work, struct ieee80211_sub_if_data, work); | |
1234 | struct ieee80211_local *local = sdata->local; | |
1235 | struct sk_buff *skb; | |
344eec67 | 1236 | struct sta_info *sta; |
1fa57d01 JB |
1237 | |
1238 | if (!ieee80211_sdata_running(sdata)) | |
1239 | return; | |
1240 | ||
fc58c47e | 1241 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
1fa57d01 JB |
1242 | return; |
1243 | ||
4afaff17 | 1244 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1245 | return; |
1246 | ||
1247 | /* first process frames */ | |
1248 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1249 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1250 | ||
699cb58c JB |
1251 | if (ieee80211_is_action(mgmt->frame_control) && |
1252 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1253 | int len = skb->len; |
bed7ee6e | 1254 | |
a93e3644 | 1255 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1256 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1257 | if (sta) { |
1258 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1259 | case WLAN_ACTION_ADDBA_REQ: | |
1260 | ieee80211_process_addba_request( | |
1261 | local, sta, mgmt, len); | |
1262 | break; | |
1263 | case WLAN_ACTION_ADDBA_RESP: | |
1264 | ieee80211_process_addba_resp(local, sta, | |
1265 | mgmt, len); | |
1266 | break; | |
1267 | case WLAN_ACTION_DELBA: | |
1268 | ieee80211_process_delba(sdata, sta, | |
1269 | mgmt, len); | |
1270 | break; | |
1271 | default: | |
1272 | WARN_ON(1); | |
1273 | break; | |
1274 | } | |
1275 | } | |
a93e3644 | 1276 | mutex_unlock(&local->sta_mtx); |
23a1f8d4 SS |
1277 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1278 | mgmt->u.action.category == WLAN_CATEGORY_VHT) { | |
1279 | switch (mgmt->u.action.u.vht_group_notif.action_code) { | |
d2941df8 JB |
1280 | case WLAN_VHT_ACTION_OPMODE_NOTIF: { |
1281 | struct ieee80211_rx_status *status; | |
1282 | enum nl80211_band band; | |
1283 | u8 opmode; | |
1284 | ||
1285 | status = IEEE80211_SKB_RXCB(skb); | |
1286 | band = status->band; | |
1287 | opmode = mgmt->u.action.u.vht_opmode_notif.operating_mode; | |
1288 | ||
1289 | mutex_lock(&local->sta_mtx); | |
1290 | sta = sta_info_get_bss(sdata, mgmt->sa); | |
1291 | ||
1292 | if (sta) | |
1293 | ieee80211_vht_handle_opmode(sdata, sta, | |
1294 | opmode, | |
1295 | band); | |
1296 | ||
1297 | mutex_unlock(&local->sta_mtx); | |
1298 | break; | |
1299 | } | |
23a1f8d4 SS |
1300 | case WLAN_VHT_ACTION_GROUPID_MGMT: |
1301 | ieee80211_process_mu_groups(sdata, mgmt); | |
1302 | break; | |
1303 | default: | |
1304 | WARN_ON(1); | |
1305 | break; | |
1306 | } | |
344eec67 JB |
1307 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1308 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1309 | /* | |
1310 | * So the frame isn't mgmt, but frame_control | |
1311 | * is at the right place anyway, of course, so | |
1312 | * the if statement is correct. | |
1313 | * | |
1314 | * Warn if we have other data frame types here, | |
1315 | * they must not get here. | |
1316 | */ | |
1317 | WARN_ON(hdr->frame_control & | |
1318 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1319 | WARN_ON(!(hdr->seq_ctrl & | |
1320 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1321 | /* | |
1322 | * This was a fragment of a frame, received while | |
1323 | * a block-ack session was active. That cannot be | |
1324 | * right, so terminate the session. | |
1325 | */ | |
a93e3644 | 1326 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1327 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 | 1328 | if (sta) { |
a1f2ba04 | 1329 | u16 tid = ieee80211_get_tid(hdr); |
344eec67 JB |
1330 | |
1331 | __ieee80211_stop_rx_ba_session( | |
1332 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1333 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1334 | true); | |
344eec67 | 1335 | } |
a93e3644 | 1336 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1337 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1338 | case NL80211_IFTYPE_STATION: |
1339 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1340 | break; | |
1341 | case NL80211_IFTYPE_ADHOC: | |
1342 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1343 | break; | |
1344 | case NL80211_IFTYPE_MESH_POINT: | |
1345 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1346 | break; | |
1347 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1348 | break; | |
1349 | default: | |
1350 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1351 | break; |
1352 | } | |
36b3a628 JB |
1353 | |
1354 | kfree_skb(skb); | |
1fa57d01 JB |
1355 | } |
1356 | ||
1357 | /* then other type-dependent work */ | |
1358 | switch (sdata->vif.type) { | |
1359 | case NL80211_IFTYPE_STATION: | |
1360 | ieee80211_sta_work(sdata); | |
1361 | break; | |
1362 | case NL80211_IFTYPE_ADHOC: | |
1363 | ieee80211_ibss_work(sdata); | |
1364 | break; | |
1365 | case NL80211_IFTYPE_MESH_POINT: | |
1366 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1367 | break; | |
1368 | ieee80211_mesh_work(sdata); | |
1369 | break; | |
239281f8 RL |
1370 | case NL80211_IFTYPE_OCB: |
1371 | ieee80211_ocb_work(sdata); | |
1372 | break; | |
1fa57d01 JB |
1373 | default: |
1374 | break; | |
1375 | } | |
1376 | } | |
1377 | ||
04ecd257 JB |
1378 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1379 | { | |
1380 | struct ieee80211_sub_if_data *sdata = | |
1381 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1382 | ||
1383 | ieee80211_recalc_smps(sdata); | |
1384 | } | |
1fa57d01 | 1385 | |
75636525 JB |
1386 | /* |
1387 | * Helper function to initialise an interface to a specific type. | |
1388 | */ | |
1389 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1390 | enum nl80211_iftype type) |
f0706e82 | 1391 | { |
239281f8 RL |
1392 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1393 | 0xff, 0xff, 0xff}; | |
1394 | ||
75636525 JB |
1395 | /* clear type-dependent union */ |
1396 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1397 | ||
1398 | /* and set some type-dependent values */ | |
1399 | sdata->vif.type = type; | |
2ca27bcf | 1400 | sdata->vif.p2p = false; |
60719ffd | 1401 | sdata->wdev.iftype = type; |
75636525 | 1402 | |
a621fa4d JB |
1403 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1404 | sdata->control_port_no_encrypt = false; | |
2475b1cc | 1405 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1406 | sdata->vif.bss_conf.idle = true; |
a621fa4d | 1407 | |
b53be792 SW |
1408 | sdata->noack_map = 0; |
1409 | ||
f142c6b9 JB |
1410 | /* only monitor/p2p-device differ */ |
1411 | if (sdata->dev) { | |
1412 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1413 | sdata->dev->type = ARPHRD_ETHER; | |
1414 | } | |
75636525 | 1415 | |
35f20c14 | 1416 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1417 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1418 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1419 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1420 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1421 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1422 | |
75636525 | 1423 | switch (type) { |
2ca27bcf JB |
1424 | case NL80211_IFTYPE_P2P_GO: |
1425 | type = NL80211_IFTYPE_AP; | |
1426 | sdata->vif.type = type; | |
1427 | sdata->vif.p2p = true; | |
1428 | /* fall through */ | |
05c914fe | 1429 | case NL80211_IFTYPE_AP: |
d012a605 | 1430 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1431 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
687da132 EG |
1432 | INIT_WORK(&sdata->u.ap.request_smps_work, |
1433 | ieee80211_request_smps_ap_work); | |
ad2d223a | 1434 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
687da132 | 1435 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
75636525 | 1436 | break; |
2ca27bcf JB |
1437 | case NL80211_IFTYPE_P2P_CLIENT: |
1438 | type = NL80211_IFTYPE_STATION; | |
1439 | sdata->vif.type = type; | |
1440 | sdata->vif.p2p = true; | |
1441 | /* fall through */ | |
05c914fe | 1442 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1443 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1444 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1445 | break; |
6e0bd6c3 | 1446 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1447 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1448 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1449 | break; |
46900298 | 1450 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1451 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1452 | ieee80211_ibss_setup_sdata(sdata); |
1453 | break; | |
05c914fe | 1454 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1455 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1456 | ieee80211_mesh_init_sdata(sdata); | |
1457 | break; | |
05c914fe | 1458 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1459 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1460 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
d8212184 | 1461 | sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | |
75636525 JB |
1462 | MONITOR_FLAG_OTHER_BSS; |
1463 | break; | |
05c914fe | 1464 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1465 | sdata->vif.bss_conf.bssid = NULL; |
1466 | break; | |
167e33f4 AB |
1467 | case NL80211_IFTYPE_NAN: |
1468 | idr_init(&sdata->u.nan.function_inst_ids); | |
1469 | spin_lock_init(&sdata->u.nan.func_lock); | |
1470 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
1471 | break; | |
05c914fe | 1472 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1473 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1474 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1475 | break; |
05c914fe | 1476 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1477 | case NUM_NL80211_IFTYPES: |
c7976f52 | 1478 | WARN_ON(1); |
75636525 JB |
1479 | break; |
1480 | } | |
1481 | ||
1482 | ieee80211_debugfs_add_netdev(sdata); | |
1483 | } | |
1484 | ||
34d4bc4d JB |
1485 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1486 | enum nl80211_iftype type) | |
1487 | { | |
1488 | struct ieee80211_local *local = sdata->local; | |
1489 | int ret, err; | |
2ca27bcf JB |
1490 | enum nl80211_iftype internal_type = type; |
1491 | bool p2p = false; | |
34d4bc4d JB |
1492 | |
1493 | ASSERT_RTNL(); | |
1494 | ||
1495 | if (!local->ops->change_interface) | |
1496 | return -EBUSY; | |
1497 | ||
1498 | switch (sdata->vif.type) { | |
1499 | case NL80211_IFTYPE_AP: | |
1500 | case NL80211_IFTYPE_STATION: | |
1501 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1502 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1503 | /* |
1504 | * Could maybe also all others here? | |
1505 | * Just not sure how that interacts | |
1506 | * with the RX/config path e.g. for | |
1507 | * mesh. | |
1508 | */ | |
1509 | break; | |
1510 | default: | |
1511 | return -EBUSY; | |
1512 | } | |
1513 | ||
1514 | switch (type) { | |
1515 | case NL80211_IFTYPE_AP: | |
1516 | case NL80211_IFTYPE_STATION: | |
1517 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1518 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1519 | /* |
1520 | * Could probably support everything | |
1521 | * but WDS here (WDS do_open can fail | |
1522 | * under memory pressure, which this | |
1523 | * code isn't prepared to handle). | |
1524 | */ | |
1525 | break; | |
2ca27bcf JB |
1526 | case NL80211_IFTYPE_P2P_CLIENT: |
1527 | p2p = true; | |
1528 | internal_type = NL80211_IFTYPE_STATION; | |
1529 | break; | |
1530 | case NL80211_IFTYPE_P2P_GO: | |
1531 | p2p = true; | |
1532 | internal_type = NL80211_IFTYPE_AP; | |
1533 | break; | |
34d4bc4d JB |
1534 | default: |
1535 | return -EBUSY; | |
1536 | } | |
1537 | ||
2ca27bcf | 1538 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1539 | if (ret) |
1540 | return ret; | |
1541 | ||
1542 | ieee80211_do_stop(sdata, false); | |
1543 | ||
f142c6b9 | 1544 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1545 | |
2ca27bcf | 1546 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1547 | if (ret) |
a9865538 | 1548 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1549 | |
3a25a8c8 JB |
1550 | /* |
1551 | * Ignore return value here, there's not much we can do since | |
1552 | * the driver changed the interface type internally already. | |
1553 | * The warnings will hopefully make driver authors fix it :-) | |
1554 | */ | |
a9865538 | 1555 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1556 | |
34d4bc4d JB |
1557 | ieee80211_setup_sdata(sdata, type); |
1558 | ||
f142c6b9 | 1559 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1560 | WARN(err, "type change: do_open returned %d", err); |
1561 | ||
1562 | return ret; | |
1563 | } | |
1564 | ||
f3947e2d | 1565 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1566 | enum nl80211_iftype type) |
75636525 | 1567 | { |
34d4bc4d JB |
1568 | int ret; |
1569 | ||
f3947e2d JB |
1570 | ASSERT_RTNL(); |
1571 | ||
2ca27bcf | 1572 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1573 | return 0; |
1574 | ||
34d4bc4d JB |
1575 | if (ieee80211_sdata_running(sdata)) { |
1576 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1577 | if (ret) | |
1578 | return ret; | |
1579 | } else { | |
1580 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1581 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1582 | ieee80211_setup_sdata(sdata, type); |
1583 | } | |
75636525 JB |
1584 | |
1585 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1586 | if (type == NL80211_IFTYPE_STATION) |
1587 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1588 | |
1589 | return 0; | |
f0706e82 JB |
1590 | } |
1591 | ||
fa9029f8 | 1592 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1593 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1594 | { |
1595 | struct ieee80211_sub_if_data *sdata; | |
1596 | u64 mask, start, addr, val, inc; | |
1597 | u8 *m; | |
1598 | u8 tmp_addr[ETH_ALEN]; | |
1599 | int i; | |
1600 | ||
1601 | /* default ... something at least */ | |
f142c6b9 | 1602 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1603 | |
1604 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1605 | local->hw.wiphy->n_addresses <= 1) | |
1606 | return; | |
1607 | ||
fa9029f8 JB |
1608 | mutex_lock(&local->iflist_mtx); |
1609 | ||
1610 | switch (type) { | |
1611 | case NL80211_IFTYPE_MONITOR: | |
1612 | /* doesn't matter */ | |
1613 | break; | |
1614 | case NL80211_IFTYPE_WDS: | |
1615 | case NL80211_IFTYPE_AP_VLAN: | |
1616 | /* match up with an AP interface */ | |
1617 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1618 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1619 | continue; | |
f142c6b9 | 1620 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1621 | break; |
1622 | } | |
1623 | /* keep default if no AP interface present */ | |
1624 | break; | |
6d71117a JB |
1625 | case NL80211_IFTYPE_P2P_CLIENT: |
1626 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1627 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1628 | list_for_each_entry(sdata, &local->interfaces, list) { |
1629 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1630 | continue; | |
1631 | if (!ieee80211_sdata_running(sdata)) | |
1632 | continue; | |
1633 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1634 | goto out_unlock; | |
1635 | } | |
1636 | } | |
02049ce2 | 1637 | /* fall through */ |
fa9029f8 JB |
1638 | default: |
1639 | /* assign a new address if possible -- try n_addresses first */ | |
1640 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1641 | bool used = false; | |
1642 | ||
1643 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1644 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1645 | sdata->vif.addr)) { | |
fa9029f8 JB |
1646 | used = true; |
1647 | break; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | if (!used) { | |
f142c6b9 | 1652 | memcpy(perm_addr, |
fa9029f8 JB |
1653 | local->hw.wiphy->addresses[i].addr, |
1654 | ETH_ALEN); | |
1655 | break; | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | /* try mask if available */ | |
1660 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1661 | break; | |
1662 | ||
1663 | m = local->hw.wiphy->addr_mask; | |
1664 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1665 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1666 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1667 | ||
1668 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1669 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1670 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1671 | break; |
1672 | } | |
1673 | ||
ac20976d HS |
1674 | /* |
1675 | * Pick address of existing interface in case user changed | |
1676 | * MAC address manually, default to perm_addr. | |
1677 | */ | |
fa9029f8 | 1678 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1679 | list_for_each_entry(sdata, &local->interfaces, list) { |
1680 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1681 | continue; | |
1682 | m = sdata->vif.addr; | |
1683 | break; | |
1684 | } | |
fa9029f8 JB |
1685 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1686 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1687 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1688 | ||
1689 | inc = 1ULL<<__ffs64(mask); | |
1690 | val = (start & mask); | |
1691 | addr = (start & ~mask) | (val & mask); | |
1692 | do { | |
1693 | bool used = false; | |
1694 | ||
1695 | tmp_addr[5] = addr >> 0*8; | |
1696 | tmp_addr[4] = addr >> 1*8; | |
1697 | tmp_addr[3] = addr >> 2*8; | |
1698 | tmp_addr[2] = addr >> 3*8; | |
1699 | tmp_addr[1] = addr >> 4*8; | |
1700 | tmp_addr[0] = addr >> 5*8; | |
1701 | ||
1702 | val += inc; | |
1703 | ||
1704 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1705 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1706 | used = true; |
1707 | break; | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | if (!used) { | |
f142c6b9 | 1712 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1713 | break; |
1714 | } | |
1715 | addr = (start & ~mask) | (val & mask); | |
1716 | } while (addr != start); | |
1717 | ||
1718 | break; | |
1719 | } | |
1720 | ||
6d71117a | 1721 | out_unlock: |
fa9029f8 JB |
1722 | mutex_unlock(&local->iflist_mtx); |
1723 | } | |
1724 | ||
3e122be0 | 1725 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 1726 | unsigned char name_assign_type, |
84efbb84 | 1727 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1728 | struct vif_params *params) |
f0706e82 | 1729 | { |
f142c6b9 | 1730 | struct net_device *ndev = NULL; |
f0706e82 | 1731 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 1732 | struct txq_info *txqi; |
80a83cfc | 1733 | void (*if_setup)(struct net_device *dev); |
75636525 | 1734 | int ret, i; |
ded81f6b | 1735 | int txqs = 1; |
f0706e82 JB |
1736 | |
1737 | ASSERT_RTNL(); | |
75636525 | 1738 | |
708d50ed | 1739 | if (type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN) { |
f142c6b9 JB |
1740 | struct wireless_dev *wdev; |
1741 | ||
1742 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1743 | GFP_KERNEL); | |
1744 | if (!sdata) | |
1745 | return -ENOMEM; | |
1746 | wdev = &sdata->wdev; | |
1747 | ||
1748 | sdata->dev = NULL; | |
1749 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1750 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1751 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1752 | } else { | |
ba8c3d6f FF |
1753 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
1754 | sizeof(void *)); | |
1755 | int txq_size = 0; | |
1756 | ||
79af1f86 JB |
1757 | if (local->ops->wake_tx_queue && |
1758 | type != NL80211_IFTYPE_AP_VLAN && | |
1759 | type != NL80211_IFTYPE_MONITOR) | |
ba8c3d6f FF |
1760 | txq_size += sizeof(struct txq_info) + |
1761 | local->hw.txq_data_size; | |
1762 | ||
80a83cfc MK |
1763 | if (local->ops->wake_tx_queue) |
1764 | if_setup = ieee80211_if_setup_no_queue; | |
1765 | else | |
1766 | if_setup = ieee80211_if_setup; | |
1767 | ||
f142c6b9 JB |
1768 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1769 | txqs = IEEE80211_NUM_ACS; | |
1770 | ||
ba8c3d6f | 1771 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 1772 | name, name_assign_type, |
80a83cfc | 1773 | if_setup, txqs, 1); |
f142c6b9 JB |
1774 | if (!ndev) |
1775 | return -ENOMEM; | |
1776 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1777 | ||
5a490510 JB |
1778 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1779 | if (!ndev->tstats) { | |
1780 | free_netdev(ndev); | |
1781 | return -ENOMEM; | |
1782 | } | |
1783 | ||
f142c6b9 JB |
1784 | ndev->needed_headroom = local->tx_headroom + |
1785 | 4*6 /* four MAC addresses */ | |
1786 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1787 | + 6 /* mesh */ | |
1788 | + 8 /* rfc1042/bridge tunnel */ | |
1789 | - ETH_HLEN /* ethernet hard_header_len */ | |
1790 | + IEEE80211_ENCRYPT_HEADROOM; | |
1791 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1792 | ||
1793 | ret = dev_alloc_name(ndev, ndev->name); | |
1794 | if (ret < 0) { | |
e6436be2 | 1795 | ieee80211_if_free(ndev); |
c7a61cba | 1796 | free_netdev(ndev); |
f142c6b9 JB |
1797 | return ret; |
1798 | } | |
1799 | ||
1800 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
b5dfae02 BG |
1801 | if (params && is_valid_ether_addr(params->macaddr)) |
1802 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); | |
1803 | else | |
1804 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1805 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1806 | ||
1807 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1808 | sdata = netdev_priv(ndev); | |
1809 | ndev->ieee80211_ptr = &sdata->wdev; | |
1810 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1811 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1812 | ||
ba8c3d6f FF |
1813 | if (txq_size) { |
1814 | txqi = netdev_priv(ndev) + size; | |
fa962b92 | 1815 | ieee80211_txq_init(sdata, NULL, txqi, 0); |
ba8c3d6f FF |
1816 | } |
1817 | ||
f142c6b9 JB |
1818 | sdata->dev = ndev; |
1819 | } | |
75636525 JB |
1820 | |
1821 | /* initialise type-independent data */ | |
f0706e82 | 1822 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1823 | sdata->local = local; |
75636525 JB |
1824 | |
1825 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1826 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1827 | ||
1828 | INIT_LIST_HEAD(&sdata->key_list); | |
1829 | ||
164eb02d SW |
1830 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1831 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1832 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1833 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1834 | |
57fbcce3 | 1835 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
37eb0b16 JM |
1836 | struct ieee80211_supported_band *sband; |
1837 | sband = local->hw.wiphy->bands[i]; | |
1838 | sdata->rc_rateidx_mask[i] = | |
1839 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
b119ad6e LB |
1840 | if (sband) { |
1841 | __le16 cap; | |
1842 | u16 *vht_rate_mask; | |
1843 | ||
19468413 SW |
1844 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
1845 | sband->ht_cap.mcs.rx_mask, | |
1846 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1847 | |
1848 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; | |
1849 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; | |
1850 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); | |
1851 | } else { | |
19468413 SW |
1852 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
1853 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1854 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
1855 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); | |
1856 | } | |
37eb0b16 | 1857 | } |
75636525 | 1858 | |
3a25a8c8 JB |
1859 | ieee80211_set_default_queues(sdata); |
1860 | ||
1ea6f9c0 JB |
1861 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1862 | sdata->user_power_level = local->user_power_level; | |
1863 | ||
2475b1cc MS |
1864 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1865 | ||
75636525 JB |
1866 | /* setup type-dependent data */ |
1867 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1868 | |
f142c6b9 JB |
1869 | if (ndev) { |
1870 | if (params) { | |
1871 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1872 | if (type == NL80211_IFTYPE_STATION) | |
1873 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1874 | } | |
9bc383de | 1875 | |
f142c6b9 | 1876 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1877 | |
b7ffbd7e JB |
1878 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1879 | ||
9c22b4a3 JW |
1880 | /* MTU range: 256 - 2304 */ |
1881 | ndev->min_mtu = 256; | |
1882 | ndev->max_mtu = IEEE80211_MAX_DATA_LEN; | |
1883 | ||
f142c6b9 JB |
1884 | ret = register_netdevice(ndev); |
1885 | if (ret) { | |
cf124db5 | 1886 | free_netdev(ndev); |
f142c6b9 JB |
1887 | return ret; |
1888 | } | |
1889 | } | |
f0706e82 | 1890 | |
c771c9d8 | 1891 | mutex_lock(&local->iflist_mtx); |
79010420 | 1892 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1893 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1894 | |
84efbb84 JB |
1895 | if (new_wdev) |
1896 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1897 | |
f0706e82 | 1898 | return 0; |
f0706e82 JB |
1899 | } |
1900 | ||
f698d856 | 1901 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1902 | { |
f0706e82 | 1903 | ASSERT_RTNL(); |
11a843b7 | 1904 | |
c771c9d8 | 1905 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1906 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1907 | mutex_unlock(&sdata->local->iflist_mtx); |
1908 | ||
75636525 | 1909 | synchronize_rcu(); |
f142c6b9 JB |
1910 | |
1911 | if (sdata->dev) { | |
1912 | unregister_netdevice(sdata->dev); | |
1913 | } else { | |
1914 | cfg80211_unregister_wdev(&sdata->wdev); | |
835112b2 | 1915 | ieee80211_teardown_sdata(sdata); |
f142c6b9 JB |
1916 | kfree(sdata); |
1917 | } | |
1918 | } | |
1919 | ||
1920 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1921 | { | |
1922 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1923 | return; | |
1924 | ieee80211_do_stop(sdata, true); | |
f0706e82 JB |
1925 | } |
1926 | ||
75636525 | 1927 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
f0706e82 | 1928 | { |
75636525 | 1929 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1930 | LIST_HEAD(unreg_list); |
f142c6b9 | 1931 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1932 | |
1933 | ASSERT_RTNL(); | |
1934 | ||
d8d9008c JB |
1935 | /* Before destroying the interfaces, make sure they're all stopped so |
1936 | * that the hardware is stopped. Otherwise, the driver might still be | |
1937 | * iterating the interfaces during the shutdown, e.g. from a worker | |
1938 | * or from RX processing or similar, and if it does so (using atomic | |
1939 | * iteration) while we're manipulating the list, the iteration will | |
1940 | * crash. | |
1941 | * | |
1942 | * After this, the hardware should be stopped and the driver should | |
1943 | * have stopped all of its activities, so that we can do RCU-unaware | |
1944 | * manipulations of the interface list below. | |
c8aa22db | 1945 | */ |
d8d9008c JB |
1946 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
1947 | ||
1948 | WARN(local->open_count, "%s: open count remains %d\n", | |
1949 | wiphy_name(local->hw.wiphy), local->open_count); | |
c8aa22db | 1950 | |
efe117ab | 1951 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1952 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1953 | list_del(&sdata->list); | |
c771c9d8 | 1954 | |
f142c6b9 JB |
1955 | if (sdata->dev) |
1956 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1957 | else | |
1958 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1959 | } |
efe117ab ED |
1960 | mutex_unlock(&local->iflist_mtx); |
1961 | unregister_netdevice_many(&unreg_list); | |
f142c6b9 JB |
1962 | |
1963 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1964 | list_del(&sdata->list); | |
1965 | cfg80211_unregister_wdev(&sdata->wdev); | |
1966 | kfree(sdata); | |
1967 | } | |
f0706e82 | 1968 | } |
5cff20e6 | 1969 | |
47846c9b | 1970 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 1971 | unsigned long state, void *ptr) |
47846c9b | 1972 | { |
351638e7 | 1973 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
1974 | struct ieee80211_sub_if_data *sdata; |
1975 | ||
1976 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 1977 | return NOTIFY_DONE; |
47846c9b JB |
1978 | |
1979 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 1980 | return NOTIFY_DONE; |
47846c9b JB |
1981 | |
1982 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 1983 | return NOTIFY_DONE; |
47846c9b JB |
1984 | |
1985 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 1986 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 1987 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
1988 | |
1989 | return NOTIFY_OK; | |
47846c9b JB |
1990 | } |
1991 | ||
1992 | static struct notifier_block mac80211_netdev_notifier = { | |
1993 | .notifier_call = netdev_notify, | |
1994 | }; | |
1995 | ||
1996 | int ieee80211_iface_init(void) | |
1997 | { | |
1998 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1999 | } | |
2000 | ||
2001 | void ieee80211_iface_exit(void) | |
2002 | { | |
2003 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
2004 | } | |
72f15d53 MB |
2005 | |
2006 | void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2007 | { | |
2008 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2009 | atomic_inc(&sdata->u.ap.num_mcast_sta); | |
2010 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2011 | atomic_inc(&sdata->u.vlan.num_mcast_sta); | |
2012 | } | |
2013 | ||
2014 | void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata) | |
2015 | { | |
2016 | if (sdata->vif.type == NL80211_IFTYPE_AP) | |
2017 | atomic_dec(&sdata->u.ap.num_mcast_sta); | |
2018 | else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
2019 | atomic_dec(&sdata->u.vlan.num_mcast_sta); | |
2020 | } |