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Commit | Line | Data |
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f0706e82 | 1 | /* |
c5d54fbf | 2 | * Interface handling |
0d143fe1 | 3 | * |
f0706e82 JB |
4 | * Copyright 2002-2005, Instant802 Networks, Inc. |
5 | * Copyright 2005-2006, Devicescape Software, Inc. | |
6 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
75636525 | 7 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 8 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
f0706e82 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
f0706e82 JB |
15 | #include <linux/kernel.h> |
16 | #include <linux/if_arp.h> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/rtnetlink.h> | |
19 | #include <net/mac80211.h> | |
cf0277e7 | 20 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
21 | #include "ieee80211_i.h" |
22 | #include "sta_info.h" | |
e9f207f0 | 23 | #include "debugfs_netdev.h" |
ee385855 | 24 | #include "mesh.h" |
0d143fe1 | 25 | #include "led.h" |
24487981 | 26 | #include "driver-ops.h" |
cf0277e7 | 27 | #include "wme.h" |
1be7fe8d | 28 | #include "rate.h" |
0d143fe1 | 29 | |
c771c9d8 JB |
30 | /** |
31 | * DOC: Interface list locking | |
32 | * | |
33 | * The interface list in each struct ieee80211_local is protected | |
34 | * three-fold: | |
35 | * | |
36 | * (1) modifications may only be done under the RTNL | |
37 | * (2) modifications and readers are protected against each other by | |
38 | * the iflist_mtx. | |
39 | * (3) modifications are done in an RCU manner so atomic readers | |
40 | * can traverse the list in RCU-safe blocks. | |
41 | * | |
42 | * As a consequence, reads (traversals) of the list can be protected | |
43 | * by either the RTNL, the iflist_mtx or RCU. | |
44 | */ | |
45 | ||
42bd20d9 AE |
46 | static void ieee80211_iface_work(struct work_struct *work); |
47 | ||
1ea6f9c0 JB |
48 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
49 | { | |
50 | struct ieee80211_chanctx_conf *chanctx_conf; | |
51 | int power; | |
52 | ||
53 | rcu_read_lock(); | |
54 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
55 | if (!chanctx_conf) { | |
56 | rcu_read_unlock(); | |
57 | return false; | |
58 | } | |
59 | ||
0430c883 | 60 | power = ieee80211_chandef_max_power(&chanctx_conf->def); |
1ea6f9c0 JB |
61 | rcu_read_unlock(); |
62 | ||
63 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
64 | power = min(power, sdata->user_power_level); | |
65 | ||
66 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
67 | power = min(power, sdata->ap_power_level); | |
68 | ||
69 | if (power != sdata->vif.bss_conf.txpower) { | |
70 | sdata->vif.bss_conf.txpower = power; | |
71 | ieee80211_hw_config(sdata->local, 0); | |
72 | return true; | |
73 | } | |
74 | ||
75 | return false; | |
76 | } | |
77 | ||
db82d8a9 LB |
78 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, |
79 | bool update_bss) | |
1ea6f9c0 | 80 | { |
5ad11b50 EG |
81 | if (__ieee80211_recalc_txpower(sdata) || |
82 | (update_bss && ieee80211_sdata_running(sdata))) | |
1ea6f9c0 JB |
83 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); |
84 | } | |
c771c9d8 | 85 | |
62a40a15 | 86 | static u32 __ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
87 | { |
88 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
89 | return 0; | |
90 | ||
91 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
92 | return IEEE80211_CONF_CHANGE_IDLE; | |
93 | } | |
94 | ||
62a40a15 | 95 | static u32 __ieee80211_idle_on(struct ieee80211_local *local) |
cc45ae54 JB |
96 | { |
97 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
98 | return 0; | |
99 | ||
3b24f4c6 | 100 | ieee80211_flush_queues(local, NULL, false); |
cc45ae54 JB |
101 | |
102 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
103 | return IEEE80211_CONF_CHANGE_IDLE; | |
104 | } | |
105 | ||
62a40a15 JB |
106 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local, |
107 | bool force_active) | |
cc45ae54 | 108 | { |
1d5e1266 | 109 | bool working, scanning, active; |
cc45ae54 | 110 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
cc45ae54 | 111 | |
cc45ae54 JB |
112 | lockdep_assert_held(&local->mtx); |
113 | ||
62a40a15 JB |
114 | active = force_active || |
115 | !list_empty(&local->chanctx_list) || | |
116 | local->monitors; | |
cc45ae54 | 117 | |
1d5e1266 JB |
118 | working = !local->ops->remain_on_channel && |
119 | !list_empty(&local->roc_list); | |
cc45ae54 | 120 | |
f1e3e051 JB |
121 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
122 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 123 | |
cc45ae54 JB |
124 | if (working || scanning) |
125 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
126 | else | |
127 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
128 | ||
fd0f979a | 129 | if (active) |
cc45ae54 JB |
130 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
131 | else | |
132 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
133 | ||
134 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
135 | ||
fd0f979a | 136 | if (working || scanning || active) |
62a40a15 JB |
137 | return __ieee80211_idle_off(local); |
138 | return __ieee80211_idle_on(local); | |
139 | } | |
140 | ||
141 | u32 ieee80211_idle_off(struct ieee80211_local *local) | |
142 | { | |
143 | return __ieee80211_recalc_idle(local, true); | |
144 | } | |
145 | ||
146 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
147 | { | |
148 | u32 change = __ieee80211_recalc_idle(local, false); | |
fd0f979a JB |
149 | if (change) |
150 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
151 | } |
152 | ||
0d143fe1 JB |
153 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
154 | { | |
09b1426e | 155 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 156 | return -EINVAL; |
0d143fe1 | 157 | |
0d143fe1 JB |
158 | dev->mtu = new_mtu; |
159 | return 0; | |
160 | } | |
161 | ||
3899ba90 | 162 | static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr, |
31eba5bc | 163 | bool check_dup) |
478622e8 | 164 | { |
ac20976d HS |
165 | struct ieee80211_local *local = sdata->local; |
166 | struct ieee80211_sub_if_data *iter; | |
478622e8 HS |
167 | u64 new, mask, tmp; |
168 | u8 *m; | |
169 | int ret = 0; | |
170 | ||
171 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
172 | return 0; | |
173 | ||
174 | m = addr; | |
175 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
176 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
177 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
178 | ||
179 | m = local->hw.wiphy->addr_mask; | |
180 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
181 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
182 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
183 | ||
31eba5bc FF |
184 | if (!check_dup) |
185 | return ret; | |
478622e8 HS |
186 | |
187 | mutex_lock(&local->iflist_mtx); | |
ac20976d HS |
188 | list_for_each_entry(iter, &local->interfaces, list) { |
189 | if (iter == sdata) | |
478622e8 HS |
190 | continue; |
191 | ||
3899ba90 | 192 | if (iter->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 193 | !(iter->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
478622e8 HS |
194 | continue; |
195 | ||
ac20976d | 196 | m = iter->vif.addr; |
478622e8 HS |
197 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
198 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
199 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
200 | ||
201 | if ((new & ~mask) != (tmp & ~mask)) { | |
202 | ret = -EINVAL; | |
203 | break; | |
204 | } | |
205 | } | |
206 | mutex_unlock(&local->iflist_mtx); | |
207 | ||
208 | return ret; | |
209 | } | |
210 | ||
47846c9b JB |
211 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
212 | { | |
213 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 214 | struct sockaddr *sa = addr; |
31eba5bc | 215 | bool check_dup = true; |
47846c9b JB |
216 | int ret; |
217 | ||
9607e6b6 | 218 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
219 | return -EBUSY; |
220 | ||
31eba5bc | 221 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR && |
d8212184 | 222 | !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
223 | check_dup = false; |
224 | ||
3899ba90 | 225 | ret = ieee80211_verify_mac(sdata, sa->sa_data, check_dup); |
478622e8 HS |
226 | if (ret) |
227 | return ret; | |
228 | ||
fc5f7577 | 229 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
230 | |
231 | if (ret == 0) | |
fc5f7577 | 232 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
233 | |
234 | return ret; | |
235 | } | |
236 | ||
0d143fe1 JB |
237 | static inline int identical_mac_addr_allowed(int type1, int type2) |
238 | { | |
239 | return type1 == NL80211_IFTYPE_MONITOR || | |
240 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
241 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
242 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
243 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
244 | (type1 == NL80211_IFTYPE_WDS && | |
245 | (type2 == NL80211_IFTYPE_WDS || | |
246 | type2 == NL80211_IFTYPE_AP)) || | |
247 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
248 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
249 | (type2 == NL80211_IFTYPE_AP || | |
250 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
251 | } | |
252 | ||
87490f6d JB |
253 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
254 | enum nl80211_iftype iftype) | |
0d143fe1 | 255 | { |
b4a4bf5d | 256 | struct ieee80211_local *local = sdata->local; |
87490f6d | 257 | struct ieee80211_sub_if_data *nsdata; |
b6a55015 | 258 | int ret; |
0d143fe1 | 259 | |
87490f6d | 260 | ASSERT_RTNL(); |
0d143fe1 JB |
261 | |
262 | /* we hold the RTNL here so can safely walk the list */ | |
263 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 264 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
239281f8 RL |
265 | /* |
266 | * Only OCB and monitor mode may coexist | |
267 | */ | |
268 | if ((sdata->vif.type == NL80211_IFTYPE_OCB && | |
269 | nsdata->vif.type != NL80211_IFTYPE_MONITOR) || | |
270 | (sdata->vif.type != NL80211_IFTYPE_MONITOR && | |
271 | nsdata->vif.type == NL80211_IFTYPE_OCB)) | |
272 | return -EBUSY; | |
273 | ||
0d143fe1 JB |
274 | /* |
275 | * Allow only a single IBSS interface to be up at any | |
276 | * time. This is restricted because beacon distribution | |
277 | * cannot work properly if both are in the same IBSS. | |
278 | * | |
279 | * To remove this restriction we'd have to disallow them | |
280 | * from setting the same SSID on different IBSS interfaces | |
281 | * belonging to the same hardware. Then, however, we're | |
282 | * faced with having to adopt two different TSF timers... | |
283 | */ | |
87490f6d | 284 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
285 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
286 | return -EBUSY; | |
73da7d5b SW |
287 | /* |
288 | * will not add another interface while any channel | |
289 | * switch is active. | |
290 | */ | |
291 | if (nsdata->vif.csa_active) | |
292 | return -EBUSY; | |
0d143fe1 JB |
293 | |
294 | /* | |
295 | * The remaining checks are only performed for interfaces | |
296 | * with the same MAC address. | |
297 | */ | |
371a255e JB |
298 | if (!ether_addr_equal(sdata->vif.addr, |
299 | nsdata->vif.addr)) | |
0d143fe1 JB |
300 | continue; |
301 | ||
302 | /* | |
303 | * check whether it may have the same address | |
304 | */ | |
87490f6d | 305 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
306 | nsdata->vif.type)) |
307 | return -ENOTUNIQ; | |
308 | ||
309 | /* | |
310 | * can only add VLANs to enabled APs | |
311 | */ | |
87490f6d | 312 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
313 | nsdata->vif.type == NL80211_IFTYPE_AP) |
314 | sdata->bss = &nsdata->u.ap; | |
315 | } | |
316 | } | |
317 | ||
b6a55015 LC |
318 | mutex_lock(&local->chanctx_mtx); |
319 | ret = ieee80211_check_combinations(sdata, NULL, 0, 0); | |
320 | mutex_unlock(&local->chanctx_mtx); | |
321 | return ret; | |
87490f6d JB |
322 | } |
323 | ||
a9865538 JB |
324 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, |
325 | enum nl80211_iftype iftype) | |
3a25a8c8 JB |
326 | { |
327 | int n_queues = sdata->local->hw.queues; | |
328 | int i; | |
329 | ||
a9865538 | 330 | if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
0ef24e52 IP |
331 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
332 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
333 | IEEE80211_INVAL_HW_QUEUE)) | |
334 | return -EINVAL; | |
335 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
336 | n_queues)) | |
337 | return -EINVAL; | |
338 | } | |
3a25a8c8 JB |
339 | } |
340 | ||
a9865538 JB |
341 | if ((iftype != NL80211_IFTYPE_AP && |
342 | iftype != NL80211_IFTYPE_P2P_GO && | |
343 | iftype != NL80211_IFTYPE_MESH_POINT) || | |
30686bf7 | 344 | !ieee80211_hw_check(&sdata->local->hw, QUEUE_CONTROL)) { |
3a25a8c8 JB |
345 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
346 | return 0; | |
347 | } | |
348 | ||
349 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
350 | return -EINVAL; | |
351 | ||
352 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
353 | return -EINVAL; | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
85416a4f CL |
358 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
359 | const int offset) | |
360 | { | |
361 | struct ieee80211_local *local = sdata->local; | |
d8212184 | 362 | u32 flags = sdata->u.mntr.flags; |
85416a4f CL |
363 | |
364 | #define ADJUST(_f, _s) do { \ | |
365 | if (flags & MONITOR_FLAG_##_f) \ | |
366 | local->fif_##_s += offset; \ | |
367 | } while (0) | |
368 | ||
369 | ADJUST(FCSFAIL, fcsfail); | |
370 | ADJUST(PLCPFAIL, plcpfail); | |
371 | ADJUST(CONTROL, control); | |
372 | ADJUST(CONTROL, pspoll); | |
373 | ADJUST(OTHER_BSS, other_bss); | |
374 | ||
375 | #undef ADJUST | |
376 | } | |
377 | ||
3a25a8c8 JB |
378 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
379 | { | |
380 | struct ieee80211_local *local = sdata->local; | |
381 | int i; | |
382 | ||
383 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
30686bf7 | 384 | if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) |
3a25a8c8 | 385 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; |
a9d3c05c | 386 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 387 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
388 | else |
389 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
390 | } |
391 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
392 | } | |
393 | ||
3c3e21e7 | 394 | int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
395 | { |
396 | struct ieee80211_sub_if_data *sdata; | |
8b305780 | 397 | int ret; |
4b6f1dd6 | 398 | |
30686bf7 | 399 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
400 | return 0; |
401 | ||
8b305780 | 402 | ASSERT_RTNL(); |
685fb72b | 403 | |
4b6f1dd6 | 404 | if (local->monitor_sdata) |
8b305780 | 405 | return 0; |
4b6f1dd6 JB |
406 | |
407 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
8b305780 JB |
408 | if (!sdata) |
409 | return -ENOMEM; | |
4b6f1dd6 JB |
410 | |
411 | /* set up data */ | |
412 | sdata->local = local; | |
413 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
414 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
415 | wiphy_name(local->hw.wiphy)); | |
34171dc0 | 416 | sdata->wdev.iftype = NL80211_IFTYPE_MONITOR; |
4b6f1dd6 | 417 | |
2475b1cc MS |
418 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
419 | ||
3a25a8c8 JB |
420 | ieee80211_set_default_queues(sdata); |
421 | ||
4b6f1dd6 JB |
422 | ret = drv_add_interface(local, sdata); |
423 | if (WARN_ON(ret)) { | |
424 | /* ok .. stupid driver, it asked for this! */ | |
425 | kfree(sdata); | |
8b305780 | 426 | return ret; |
4b6f1dd6 JB |
427 | } |
428 | ||
a9865538 | 429 | ret = ieee80211_check_queues(sdata, NL80211_IFTYPE_MONITOR); |
3a25a8c8 JB |
430 | if (ret) { |
431 | kfree(sdata); | |
8b305780 | 432 | return ret; |
3a25a8c8 JB |
433 | } |
434 | ||
fab57a6c JB |
435 | mutex_lock(&local->iflist_mtx); |
436 | rcu_assign_pointer(local->monitor_sdata, sdata); | |
437 | mutex_unlock(&local->iflist_mtx); | |
438 | ||
34a3740d | 439 | mutex_lock(&local->mtx); |
4bf88530 | 440 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a | 441 | IEEE80211_CHANCTX_EXCLUSIVE); |
34a3740d | 442 | mutex_unlock(&local->mtx); |
55de908a | 443 | if (ret) { |
fab57a6c | 444 | mutex_lock(&local->iflist_mtx); |
0c2bef46 | 445 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
fab57a6c JB |
446 | mutex_unlock(&local->iflist_mtx); |
447 | synchronize_net(); | |
55de908a JB |
448 | drv_remove_interface(local, sdata); |
449 | kfree(sdata); | |
8b305780 | 450 | return ret; |
55de908a JB |
451 | } |
452 | ||
42bd20d9 AE |
453 | skb_queue_head_init(&sdata->skb_queue); |
454 | INIT_WORK(&sdata->work, ieee80211_iface_work); | |
455 | ||
8b305780 | 456 | return 0; |
4b6f1dd6 JB |
457 | } |
458 | ||
3c3e21e7 | 459 | void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
460 | { |
461 | struct ieee80211_sub_if_data *sdata; | |
462 | ||
30686bf7 | 463 | if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) |
4b6f1dd6 JB |
464 | return; |
465 | ||
8b305780 JB |
466 | ASSERT_RTNL(); |
467 | ||
685fb72b | 468 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 469 | |
685fb72b JB |
470 | sdata = rcu_dereference_protected(local->monitor_sdata, |
471 | lockdep_is_held(&local->iflist_mtx)); | |
8b305780 JB |
472 | if (!sdata) { |
473 | mutex_unlock(&local->iflist_mtx); | |
474 | return; | |
475 | } | |
4b6f1dd6 | 476 | |
0c2bef46 | 477 | RCU_INIT_POINTER(local->monitor_sdata, NULL); |
8b305780 JB |
478 | mutex_unlock(&local->iflist_mtx); |
479 | ||
4b6f1dd6 JB |
480 | synchronize_net(); |
481 | ||
34a3740d | 482 | mutex_lock(&local->mtx); |
55de908a | 483 | ieee80211_vif_release_channel(sdata); |
34a3740d | 484 | mutex_unlock(&local->mtx); |
55de908a | 485 | |
4b6f1dd6 JB |
486 | drv_remove_interface(local, sdata); |
487 | ||
488 | kfree(sdata); | |
489 | } | |
490 | ||
34d4bc4d JB |
491 | /* |
492 | * NOTE: Be very careful when changing this function, it must NOT return | |
493 | * an error on interface type changes that have been pre-checked, so most | |
494 | * checks should be in ieee80211_check_concurrent_iface. | |
495 | */ | |
f142c6b9 | 496 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 497 | { |
f142c6b9 JB |
498 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
499 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
500 | struct ieee80211_local *local = sdata->local; |
501 | struct sta_info *sta; | |
502 | u32 changed = 0; | |
503 | int res; | |
504 | u32 hw_reconf_flags = 0; | |
505 | ||
0d143fe1 JB |
506 | switch (sdata->vif.type) { |
507 | case NL80211_IFTYPE_WDS: | |
508 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
509 | return -ENOLINK; | |
510 | break; | |
665c93a9 JB |
511 | case NL80211_IFTYPE_AP_VLAN: { |
512 | struct ieee80211_sub_if_data *master; | |
513 | ||
0d143fe1 JB |
514 | if (!sdata->bss) |
515 | return -ENOLINK; | |
665c93a9 | 516 | |
4e141dad | 517 | mutex_lock(&local->mtx); |
0d143fe1 | 518 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
4e141dad | 519 | mutex_unlock(&local->mtx); |
665c93a9 JB |
520 | |
521 | master = container_of(sdata->bss, | |
522 | struct ieee80211_sub_if_data, u.ap); | |
523 | sdata->control_port_protocol = | |
524 | master->control_port_protocol; | |
525 | sdata->control_port_no_encrypt = | |
526 | master->control_port_no_encrypt; | |
1351c5d3 JB |
527 | sdata->vif.cab_queue = master->vif.cab_queue; |
528 | memcpy(sdata->vif.hw_queue, master->vif.hw_queue, | |
529 | sizeof(sdata->vif.hw_queue)); | |
2967e031 | 530 | sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef; |
f9dca80b MK |
531 | |
532 | mutex_lock(&local->key_mtx); | |
533 | sdata->crypto_tx_tailroom_needed_cnt += | |
534 | master->crypto_tx_tailroom_needed_cnt; | |
535 | mutex_unlock(&local->key_mtx); | |
536 | ||
0d143fe1 | 537 | break; |
665c93a9 | 538 | } |
0d143fe1 JB |
539 | case NL80211_IFTYPE_AP: |
540 | sdata->bss = &sdata->u.ap; | |
541 | break; | |
542 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
543 | case NL80211_IFTYPE_STATION: |
544 | case NL80211_IFTYPE_MONITOR: | |
545 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 546 | case NL80211_IFTYPE_P2P_DEVICE: |
6e0bd6c3 | 547 | case NL80211_IFTYPE_OCB: |
cb3b7d87 | 548 | case NL80211_IFTYPE_NAN: |
0d143fe1 JB |
549 | /* no special treatment */ |
550 | break; | |
551 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 552 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
553 | case NL80211_IFTYPE_P2P_CLIENT: |
554 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
555 | /* cannot happen */ |
556 | WARN_ON(1); | |
557 | break; | |
558 | } | |
559 | ||
560 | if (local->open_count == 0) { | |
24487981 | 561 | res = drv_start(local); |
0d143fe1 JB |
562 | if (res) |
563 | goto err_del_bss; | |
e8975581 JB |
564 | /* we're brought up, everything changes */ |
565 | hw_reconf_flags = ~0; | |
1f87f7d3 | 566 | ieee80211_led_radio(local, true); |
67408c8c JB |
567 | ieee80211_mod_tpt_led_trig(local, |
568 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
569 | } |
570 | ||
571 | /* | |
bf533e0b JB |
572 | * Copy the hopefully now-present MAC address to |
573 | * this interface, if it has the special null one. | |
0d143fe1 | 574 | */ |
f142c6b9 | 575 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
576 | memcpy(dev->dev_addr, |
577 | local->hw.wiphy->perm_addr, | |
578 | ETH_ALEN); | |
579 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
580 | ||
581 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
582 | res = -EADDRNOTAVAIL; |
583 | goto err_stop; | |
0adc23f5 | 584 | } |
0d143fe1 JB |
585 | } |
586 | ||
0d143fe1 JB |
587 | switch (sdata->vif.type) { |
588 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
589 | /* no need to tell driver, but set carrier and chanctx */ |
590 | if (rtnl_dereference(sdata->bss->beacon)) { | |
591 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 592 | netif_carrier_on(dev); |
4d76d21b | 593 | } else { |
3edaf3e6 | 594 | netif_carrier_off(dev); |
4d76d21b | 595 | } |
0d143fe1 JB |
596 | break; |
597 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 598 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
599 | local->cooked_mntrs++; |
600 | break; | |
601 | } | |
602 | ||
d8212184 | 603 | if (sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE) { |
31eba5bc FF |
604 | res = drv_add_interface(local, sdata); |
605 | if (res) | |
606 | goto err_stop; | |
607 | } else if (local->monitors == 0 && local->open_count == 0) { | |
075e0847 JB |
608 | res = ieee80211_add_virtual_monitor(local); |
609 | if (res) | |
610 | goto err_stop; | |
611 | } | |
612 | ||
0d143fe1 JB |
613 | /* must be before the call to ieee80211_configure_filter */ |
614 | local->monitors++; | |
e8975581 | 615 | if (local->monitors == 1) { |
0869aea0 JB |
616 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
617 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 618 | } |
0d143fe1 | 619 | |
85416a4f | 620 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 621 | ieee80211_configure_filter(local); |
801d929c FF |
622 | mutex_lock(&local->mtx); |
623 | ieee80211_recalc_idle(local); | |
624 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
625 | |
626 | netif_carrier_on(dev); | |
0d143fe1 | 627 | break; |
0d143fe1 | 628 | default: |
34d4bc4d | 629 | if (coming_up) { |
075e0847 JB |
630 | ieee80211_del_virtual_monitor(local); |
631 | ||
7b7eab6f | 632 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
633 | if (res) |
634 | goto err_stop; | |
a9865538 JB |
635 | res = ieee80211_check_queues(sdata, |
636 | ieee80211_vif_type_p2p(&sdata->vif)); | |
3a25a8c8 JB |
637 | if (res) |
638 | goto err_del_interface; | |
34d4bc4d | 639 | } |
0d143fe1 | 640 | |
29cbe68c | 641 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 642 | local->fif_pspoll++; |
7be5086d | 643 | local->fif_probe_req++; |
e3b90ca2 | 644 | |
e3b90ca2 | 645 | ieee80211_configure_filter(local); |
7be5086d JB |
646 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
647 | local->fif_probe_req++; | |
a3c9aa51 | 648 | } |
e3b90ca2 | 649 | |
f142c6b9 JB |
650 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
651 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 652 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 653 | |
c405c629 JB |
654 | switch (sdata->vif.type) { |
655 | case NL80211_IFTYPE_STATION: | |
656 | case NL80211_IFTYPE_ADHOC: | |
657 | case NL80211_IFTYPE_AP: | |
658 | case NL80211_IFTYPE_MESH_POINT: | |
6e0bd6c3 | 659 | case NL80211_IFTYPE_OCB: |
0d143fe1 | 660 | netif_carrier_off(dev); |
c405c629 | 661 | break; |
1411af15 | 662 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 663 | case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d87 | 664 | case NL80211_IFTYPE_NAN: |
1411af15 | 665 | break; |
c405c629 | 666 | default: |
a2310824 JB |
667 | /* not reached */ |
668 | WARN_ON(1); | |
c405c629 | 669 | } |
59034591 EP |
670 | |
671 | /* | |
cec66283 | 672 | * Set default queue parameters so drivers don't |
59034591 | 673 | * need to initialise the hardware if the hardware |
cec66283 JB |
674 | * doesn't start up with sane defaults. |
675 | * Enable QoS for anything but station interfaces. | |
59034591 | 676 | */ |
cec66283 JB |
677 | ieee80211_set_wmm_default(sdata, true, |
678 | sdata->vif.type != NL80211_IFTYPE_STATION); | |
0d143fe1 JB |
679 | } |
680 | ||
2d2080c3 JB |
681 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
682 | ||
0d143fe1 JB |
683 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
684 | /* Create STA entry for the WDS peer */ | |
685 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
686 | GFP_KERNEL); | |
687 | if (!sta) { | |
688 | res = -ENOMEM; | |
689 | goto err_del_interface; | |
690 | } | |
691 | ||
83d5cc01 JB |
692 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
693 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
694 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
695 | |
696 | res = sta_info_insert(sta); | |
697 | if (res) { | |
698 | /* STA has been freed */ | |
699 | goto err_del_interface; | |
700 | } | |
1be7fe8d BJ |
701 | |
702 | rate_control_rate_init(sta); | |
1411af15 | 703 | netif_carrier_on(dev); |
f142c6b9 JB |
704 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
705 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
706 | } |
707 | ||
0d143fe1 JB |
708 | /* |
709 | * set_multicast_list will be invoked by the networking core | |
710 | * which will check whether any increments here were done in | |
711 | * error and sync them down to the hardware as filter flags. | |
712 | */ | |
713 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
714 | atomic_inc(&local->iff_allmultis); | |
715 | ||
34d4bc4d JB |
716 | if (coming_up) |
717 | local->open_count++; | |
718 | ||
59034591 | 719 | if (hw_reconf_flags) |
e8975581 | 720 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 721 | |
4a733ef1 | 722 | ieee80211_recalc_ps(local); |
965bedad | 723 | |
2b436312 JB |
724 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || |
725 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
726 | /* XXX: for AP_VLAN, actually track AP queues */ | |
727 | netif_tx_start_all_queues(dev); | |
728 | } else if (dev) { | |
2b730daa JB |
729 | unsigned long flags; |
730 | int n_acs = IEEE80211_NUM_ACS; | |
731 | int ac; | |
732 | ||
733 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
734 | n_acs = 1; | |
735 | ||
736 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
737 | if (sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE || | |
738 | (local->queue_stop_reasons[sdata->vif.cab_queue] == 0 && | |
739 | skb_queue_empty(&local->pending[sdata->vif.cab_queue]))) { | |
740 | for (ac = 0; ac < n_acs; ac++) { | |
741 | int ac_queue = sdata->vif.hw_queue[ac]; | |
742 | ||
743 | if (local->queue_stop_reasons[ac_queue] == 0 && | |
744 | skb_queue_empty(&local->pending[ac_queue])) | |
745 | netif_start_subqueue(dev, ac); | |
746 | } | |
747 | } | |
748 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
749 | } | |
0d143fe1 JB |
750 | |
751 | return 0; | |
752 | err_del_interface: | |
7b7eab6f | 753 | drv_remove_interface(local, sdata); |
0d143fe1 | 754 | err_stop: |
24487981 JB |
755 | if (!local->open_count) |
756 | drv_stop(local); | |
0d143fe1 JB |
757 | err_del_bss: |
758 | sdata->bss = NULL; | |
4e141dad MK |
759 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
760 | mutex_lock(&local->mtx); | |
0d143fe1 | 761 | list_del(&sdata->u.vlan.list); |
4e141dad MK |
762 | mutex_unlock(&local->mtx); |
763 | } | |
4d6c36fa | 764 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 765 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
766 | return res; |
767 | } | |
768 | ||
34d4bc4d | 769 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
770 | { |
771 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
772 | int err; |
773 | ||
774 | /* fail early if user set an invalid address */ | |
2fcf2824 | 775 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
776 | return -EADDRNOTAVAIL; |
777 | ||
778 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
779 | if (err) | |
780 | return err; | |
781 | ||
f142c6b9 | 782 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
783 | } |
784 | ||
785 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
786 | bool going_down) | |
787 | { | |
0d143fe1 | 788 | struct ieee80211_local *local = sdata->local; |
fa962b92 | 789 | struct fq *fq = &local->fq; |
5061b0c2 JB |
790 | unsigned long flags; |
791 | struct sk_buff *skb, *tmp; | |
e8975581 | 792 | u32 hw_reconf_flags = 0; |
09f4114e | 793 | int i, flushed; |
397a7a24 | 794 | struct ps_data *ps; |
d2859df5 | 795 | struct cfg80211_chan_def chandef; |
46238845 | 796 | bool cancel_scan; |
0d143fe1 | 797 | |
c29acf20 RM |
798 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
799 | ||
46238845 JB |
800 | cancel_scan = rcu_access_pointer(local->scan_sdata) == sdata; |
801 | if (cancel_scan) | |
352ffad6 BC |
802 | ieee80211_scan_cancel(local); |
803 | ||
0d143fe1 JB |
804 | /* |
805 | * Stop TX on this interface first. | |
806 | */ | |
f142c6b9 JB |
807 | if (sdata->dev) |
808 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 809 | |
c8f994ee | 810 | ieee80211_roc_purge(local, sdata); |
af6b6374 | 811 | |
8ffcc704 EG |
812 | switch (sdata->vif.type) { |
813 | case NL80211_IFTYPE_STATION: | |
572078be | 814 | ieee80211_mgd_stop(sdata); |
8ffcc704 EG |
815 | break; |
816 | case NL80211_IFTYPE_ADHOC: | |
cd7760e6 | 817 | ieee80211_ibss_stop(sdata); |
8ffcc704 EG |
818 | break; |
819 | case NL80211_IFTYPE_AP: | |
820 | cancel_work_sync(&sdata->u.ap.request_smps_work); | |
821 | break; | |
822 | default: | |
823 | break; | |
824 | } | |
cd7760e6 | 825 | |
0d143fe1 JB |
826 | /* |
827 | * Remove all stations associated with this interface. | |
828 | * | |
829 | * This must be done before calling ops->remove_interface() | |
830 | * because otherwise we can later invoke ops->sta_notify() | |
831 | * whenever the STAs are removed, and that invalidates driver | |
832 | * assumptions about always getting a vif pointer that is valid | |
833 | * (because if we remove a STA after ops->remove_interface() | |
834 | * the driver will have removed the vif info already!) | |
835 | * | |
5eb8f4d7 JB |
836 | * In WDS mode a station must exist here and be flushed, for |
837 | * AP_VLANs stations may exist since there's nothing else that | |
838 | * would have removed them, but in other modes there shouldn't | |
839 | * be any stations. | |
0d143fe1 | 840 | */ |
d34ba216 | 841 | flushed = sta_info_flush(sdata); |
5eb8f4d7 JB |
842 | WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP_VLAN && |
843 | ((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || | |
844 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1))); | |
0d143fe1 | 845 | |
df140465 | 846 | /* don't count this interface for allmulti while it is down */ |
0d143fe1 JB |
847 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) |
848 | atomic_dec(&local->iff_allmultis); | |
849 | ||
7be5086d | 850 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 851 | local->fif_pspoll--; |
7be5086d JB |
852 | local->fif_probe_req--; |
853 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
854 | local->fif_probe_req--; | |
855 | } | |
e3b90ca2 | 856 | |
f142c6b9 JB |
857 | if (sdata->dev) { |
858 | netif_addr_lock_bh(sdata->dev); | |
859 | spin_lock_bh(&local->filter_lock); | |
860 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
861 | sdata->dev->addr_len); | |
862 | spin_unlock_bh(&local->filter_lock); | |
863 | netif_addr_unlock_bh(sdata->dev); | |
f142c6b9 | 864 | } |
3ac64bee | 865 | |
7cbf0ba5 VN |
866 | del_timer_sync(&local->dynamic_ps_timer); |
867 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 868 | |
04ecd257 | 869 | cancel_work_sync(&sdata->recalc_smps); |
dbd72850 | 870 | sdata_lock(sdata); |
59af6928 | 871 | mutex_lock(&local->mtx); |
73da7d5b | 872 | sdata->vif.csa_active = false; |
0c21e632 LC |
873 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
874 | sdata->u.mgd.csa_waiting_bcn = false; | |
a46992b4 LC |
875 | if (sdata->csa_block_tx) { |
876 | ieee80211_wake_vif_queues(local, sdata, | |
877 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
878 | sdata->csa_block_tx = false; | |
879 | } | |
59af6928 | 880 | mutex_unlock(&local->mtx); |
dbd72850 | 881 | sdata_unlock(sdata); |
59af6928 | 882 | |
73da7d5b | 883 | cancel_work_sync(&sdata->csa_finalize_work); |
04ecd257 | 884 | |
164eb02d SW |
885 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
886 | ||
887 | if (sdata->wdev.cac_started) { | |
d2859df5 | 888 | chandef = sdata->vif.bss_conf.chandef; |
b2c0958b | 889 | WARN_ON(local->suspended); |
34a3740d | 890 | mutex_lock(&local->mtx); |
164eb02d | 891 | ieee80211_vif_release_channel(sdata); |
34a3740d | 892 | mutex_unlock(&local->mtx); |
d2859df5 JD |
893 | cfg80211_cac_event(sdata->dev, &chandef, |
894 | NL80211_RADAR_CAC_ABORTED, | |
164eb02d SW |
895 | GFP_KERNEL); |
896 | } | |
897 | ||
0d143fe1 JB |
898 | /* APs need special treatment */ |
899 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 900 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
901 | |
902 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 903 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
904 | u.vlan.list) |
905 | dev_close(vlan->dev); | |
906 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
907 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
908 | /* remove all packets in parent bc_buf pointing to this dev */ | |
909 | ps = &sdata->bss->ps; | |
910 | ||
911 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
912 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
913 | if (skb->dev == sdata->dev) { | |
914 | __skb_unlink(skb, &ps->bc_buf); | |
915 | local->total_ps_buffered--; | |
916 | ieee80211_free_txskb(&local->hw, skb); | |
917 | } | |
918 | } | |
919 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
920 | } |
921 | ||
34d4bc4d JB |
922 | if (going_down) |
923 | local->open_count--; | |
0d143fe1 JB |
924 | |
925 | switch (sdata->vif.type) { | |
926 | case NL80211_IFTYPE_AP_VLAN: | |
4e141dad | 927 | mutex_lock(&local->mtx); |
0d143fe1 | 928 | list_del(&sdata->u.vlan.list); |
4e141dad | 929 | mutex_unlock(&local->mtx); |
0c2bef46 | 930 | RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL); |
10b68487 FF |
931 | /* see comment in the default case below */ |
932 | ieee80211_free_keys(sdata, true); | |
0d143fe1 JB |
933 | /* no need to tell driver */ |
934 | break; | |
935 | case NL80211_IFTYPE_MONITOR: | |
d8212184 | 936 | if (sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) { |
0d143fe1 JB |
937 | local->cooked_mntrs--; |
938 | break; | |
939 | } | |
940 | ||
941 | local->monitors--; | |
e8975581 | 942 | if (local->monitors == 0) { |
0869aea0 JB |
943 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
944 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 945 | } |
0d143fe1 | 946 | |
85416a4f | 947 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 948 | break; |
f142c6b9 JB |
949 | case NL80211_IFTYPE_P2P_DEVICE: |
950 | /* relies on synchronize_rcu() below */ | |
0c2bef46 | 951 | RCU_INIT_POINTER(local->p2p_sdata, NULL); |
f142c6b9 | 952 | /* fall through */ |
cb3b7d87 | 953 | case NL80211_IFTYPE_NAN: |
0d143fe1 | 954 | default: |
0b7dff4f | 955 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
956 | /* |
957 | * When we get here, the interface is marked down. | |
7907c7d3 | 958 | * Free the remaining keys, if there are any |
10b68487 FF |
959 | * (which can happen in AP mode if userspace sets |
960 | * keys before the interface is operating, and maybe | |
961 | * also in WDS mode) | |
75de9113 | 962 | * |
7907c7d3 JB |
963 | * Force the key freeing to always synchronize_net() |
964 | * to wait for the RX path in case it is using this | |
10b68487 | 965 | * interface enqueuing frames at this very time on |
75de9113 | 966 | * another CPU. |
35f20c14 | 967 | */ |
7907c7d3 | 968 | ieee80211_free_keys(sdata, true); |
1861b845 | 969 | skb_queue_purge(&sdata->skb_queue); |
0d143fe1 JB |
970 | } |
971 | ||
972 | sdata->bss = NULL; | |
973 | ||
5061b0c2 JB |
974 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
975 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
976 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
977 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
978 | if (info->control.vif == &sdata->vif) { | |
979 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 980 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
981 | } |
982 | } | |
983 | } | |
984 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 | 985 | |
ba8c3d6f FF |
986 | if (sdata->vif.txq) { |
987 | struct txq_info *txqi = to_txq_info(sdata->vif.txq); | |
988 | ||
fa962b92 MK |
989 | spin_lock_bh(&fq->lock); |
990 | ieee80211_txq_purge(local, txqi); | |
991 | spin_unlock_bh(&fq->lock); | |
ba8c3d6f FF |
992 | } |
993 | ||
b2c0958b JB |
994 | if (local->open_count == 0) |
995 | ieee80211_clear_tx_pending(local); | |
996 | ||
997 | /* | |
998 | * If the interface goes down while suspended, presumably because | |
999 | * the device was unplugged and that happens before our resume, | |
1000 | * then the driver is already unconfigured and the remainder of | |
1001 | * this function isn't needed. | |
1002 | * XXX: what about WoWLAN? If the device has software state, e.g. | |
1003 | * memory allocated, it might expect teardown commands from | |
1004 | * mac80211 here? | |
1005 | */ | |
1006 | if (local->suspended) { | |
1007 | WARN_ON(local->wowlan); | |
1008 | WARN_ON(rtnl_dereference(local->monitor_sdata)); | |
1009 | return; | |
1010 | } | |
1011 | ||
1012 | switch (sdata->vif.type) { | |
1013 | case NL80211_IFTYPE_AP_VLAN: | |
1014 | break; | |
1015 | case NL80211_IFTYPE_MONITOR: | |
1016 | if (local->monitors == 0) | |
1017 | ieee80211_del_virtual_monitor(local); | |
1018 | ||
1019 | mutex_lock(&local->mtx); | |
1020 | ieee80211_recalc_idle(local); | |
1021 | mutex_unlock(&local->mtx); | |
31eba5bc | 1022 | |
d8212184 | 1023 | if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) |
31eba5bc FF |
1024 | break; |
1025 | ||
1026 | /* fall through */ | |
b2c0958b JB |
1027 | default: |
1028 | if (going_down) | |
1029 | drv_remove_interface(local, sdata); | |
1030 | } | |
1031 | ||
4a733ef1 | 1032 | ieee80211_recalc_ps(local); |
b2c0958b | 1033 | |
46238845 JB |
1034 | if (cancel_scan) |
1035 | flush_delayed_work(&local->scan_work); | |
1036 | ||
b2c0958b JB |
1037 | if (local->open_count == 0) { |
1038 | ieee80211_stop_device(local); | |
1039 | ||
1040 | /* no reconfiguring after stop! */ | |
1041 | return; | |
1042 | } | |
1043 | ||
1044 | /* do after stop to avoid reconfiguring when we stop anyway */ | |
1045 | ieee80211_configure_filter(local); | |
1046 | ieee80211_hw_config(local, hw_reconf_flags); | |
1047 | ||
1048 | if (local->monitors == local->open_count) | |
075e0847 | 1049 | ieee80211_add_virtual_monitor(local); |
34d4bc4d JB |
1050 | } |
1051 | ||
1052 | static int ieee80211_stop(struct net_device *dev) | |
1053 | { | |
1054 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1055 | ||
1056 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 1057 | |
0d143fe1 JB |
1058 | return 0; |
1059 | } | |
1060 | ||
1061 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
1062 | { | |
0d143fe1 | 1063 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 1064 | struct ieee80211_local *local = sdata->local; |
df140465 | 1065 | int allmulti, sdata_allmulti; |
0d143fe1 JB |
1066 | |
1067 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
0d143fe1 | 1068 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); |
0d143fe1 JB |
1069 | |
1070 | if (allmulti != sdata_allmulti) { | |
1071 | if (dev->flags & IFF_ALLMULTI) | |
1072 | atomic_inc(&local->iff_allmultis); | |
1073 | else | |
1074 | atomic_dec(&local->iff_allmultis); | |
1075 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
1076 | } | |
1077 | ||
3b8d81e0 | 1078 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 1079 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 1080 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 1081 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
1082 | } |
1083 | ||
75636525 JB |
1084 | /* |
1085 | * Called when the netdev is removed or, by the code below, before | |
1086 | * the interface type changes. | |
1087 | */ | |
f142c6b9 | 1088 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 JB |
1089 | { |
1090 | int i; | |
1091 | ||
75636525 | 1092 | /* free extra data */ |
7907c7d3 | 1093 | ieee80211_free_keys(sdata, false); |
75636525 | 1094 | |
aee14ceb JM |
1095 | ieee80211_debugfs_remove_netdev(sdata); |
1096 | ||
f0706e82 | 1097 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
1098 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
1099 | sdata->fragment_next = 0; | |
11a843b7 | 1100 | |
b9dcf712 | 1101 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
0371a08f | 1102 | ieee80211_mesh_teardown_sdata(sdata); |
f0706e82 JB |
1103 | } |
1104 | ||
f142c6b9 JB |
1105 | static void ieee80211_uninit(struct net_device *dev) |
1106 | { | |
1107 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
1108 | } | |
1109 | ||
cf0277e7 | 1110 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
f663dd9a | 1111 | struct sk_buff *skb, |
99932d4f DB |
1112 | void *accel_priv, |
1113 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1114 | { |
1115 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1116 | } | |
1117 | ||
5a490510 JB |
1118 | static struct rtnl_link_stats64 * |
1119 | ieee80211_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) | |
1120 | { | |
1121 | int i; | |
1122 | ||
1123 | for_each_possible_cpu(i) { | |
1124 | const struct pcpu_sw_netstats *tstats; | |
1125 | u64 rx_packets, rx_bytes, tx_packets, tx_bytes; | |
1126 | unsigned int start; | |
1127 | ||
1128 | tstats = per_cpu_ptr(dev->tstats, i); | |
1129 | ||
1130 | do { | |
1131 | start = u64_stats_fetch_begin_irq(&tstats->syncp); | |
1132 | rx_packets = tstats->rx_packets; | |
1133 | tx_packets = tstats->tx_packets; | |
1134 | rx_bytes = tstats->rx_bytes; | |
1135 | tx_bytes = tstats->tx_bytes; | |
1136 | } while (u64_stats_fetch_retry_irq(&tstats->syncp, start)); | |
1137 | ||
1138 | stats->rx_packets += rx_packets; | |
1139 | stats->tx_packets += tx_packets; | |
1140 | stats->rx_bytes += rx_bytes; | |
1141 | stats->tx_bytes += tx_bytes; | |
1142 | } | |
1143 | ||
1144 | return stats; | |
1145 | } | |
1146 | ||
587e729e JB |
1147 | static const struct net_device_ops ieee80211_dataif_ops = { |
1148 | .ndo_open = ieee80211_open, | |
1149 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1150 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1151 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1152 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1153 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 1154 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1155 | .ndo_select_queue = ieee80211_netdev_select_queue, |
5a490510 | 1156 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1157 | }; |
1158 | ||
cf0277e7 | 1159 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
f663dd9a | 1160 | struct sk_buff *skb, |
99932d4f DB |
1161 | void *accel_priv, |
1162 | select_queue_fallback_t fallback) | |
cf0277e7 JB |
1163 | { |
1164 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1165 | struct ieee80211_local *local = sdata->local; | |
1166 | struct ieee80211_hdr *hdr; | |
1167 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1168 | ||
32c5057b | 1169 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1170 | return 0; |
1171 | ||
1172 | if (skb->len < 4 || | |
b49bb574 | 1173 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1174 | return 0; /* doesn't matter, frame will be dropped */ |
1175 | ||
b49bb574 | 1176 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1177 | |
00e96dec | 1178 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1179 | } |
1180 | ||
587e729e JB |
1181 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1182 | .ndo_open = ieee80211_open, | |
1183 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1184 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1185 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1186 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1187 | .ndo_change_mtu = ieee80211_change_mtu, |
31eba5bc | 1188 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1189 | .ndo_select_queue = ieee80211_monitor_select_queue, |
5a490510 | 1190 | .ndo_get_stats64 = ieee80211_get_stats64, |
587e729e JB |
1191 | }; |
1192 | ||
5a490510 JB |
1193 | static void ieee80211_if_free(struct net_device *dev) |
1194 | { | |
1195 | free_percpu(dev->tstats); | |
1196 | free_netdev(dev); | |
1197 | } | |
1198 | ||
587e729e JB |
1199 | static void ieee80211_if_setup(struct net_device *dev) |
1200 | { | |
1201 | ether_setup(dev); | |
550fd08c | 1202 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1203 | dev->netdev_ops = &ieee80211_dataif_ops; |
5a490510 | 1204 | dev->destructor = ieee80211_if_free; |
587e729e JB |
1205 | } |
1206 | ||
80a83cfc MK |
1207 | static void ieee80211_if_setup_no_queue(struct net_device *dev) |
1208 | { | |
1209 | ieee80211_if_setup(dev); | |
1210 | dev->priv_flags |= IFF_NO_QUEUE; | |
1211 | } | |
1212 | ||
1fa57d01 JB |
1213 | static void ieee80211_iface_work(struct work_struct *work) |
1214 | { | |
1215 | struct ieee80211_sub_if_data *sdata = | |
1216 | container_of(work, struct ieee80211_sub_if_data, work); | |
1217 | struct ieee80211_local *local = sdata->local; | |
1218 | struct sk_buff *skb; | |
344eec67 | 1219 | struct sta_info *sta; |
c1475ca9 | 1220 | struct ieee80211_ra_tid *ra_tid; |
08cf42e8 | 1221 | struct ieee80211_rx_agg *rx_agg; |
1fa57d01 JB |
1222 | |
1223 | if (!ieee80211_sdata_running(sdata)) | |
1224 | return; | |
1225 | ||
fc58c47e | 1226 | if (test_bit(SCAN_SW_SCANNING, &local->scanning)) |
1fa57d01 JB |
1227 | return; |
1228 | ||
4afaff17 | 1229 | if (!ieee80211_can_run_worker(local)) |
1fa57d01 JB |
1230 | return; |
1231 | ||
1232 | /* first process frames */ | |
1233 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1234 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1235 | ||
c1475ca9 JB |
1236 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1237 | ra_tid = (void *)&skb->cb; | |
1238 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1239 | ra_tid->tid); | |
1240 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1241 | ra_tid = (void *)&skb->cb; | |
1242 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1243 | ra_tid->tid); | |
08cf42e8 MK |
1244 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_START) { |
1245 | rx_agg = (void *)&skb->cb; | |
1246 | mutex_lock(&local->sta_mtx); | |
1247 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
4549cf2b | 1248 | if (sta) |
08cf42e8 | 1249 | __ieee80211_start_rx_ba_session(sta, |
4549cf2b | 1250 | 0, 0, 0, 1, rx_agg->tid, |
08cf42e8 | 1251 | IEEE80211_MAX_AMPDU_BUF, |
4549cf2b | 1252 | false, true); |
08cf42e8 MK |
1253 | mutex_unlock(&local->sta_mtx); |
1254 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_RX_AGG_STOP) { | |
1255 | rx_agg = (void *)&skb->cb; | |
1256 | mutex_lock(&local->sta_mtx); | |
1257 | sta = sta_info_get_bss(sdata, rx_agg->addr); | |
1258 | if (sta) | |
1259 | __ieee80211_stop_rx_ba_session(sta, | |
1260 | rx_agg->tid, | |
1261 | WLAN_BACK_RECIPIENT, 0, | |
1262 | false); | |
1263 | mutex_unlock(&local->sta_mtx); | |
c1475ca9 JB |
1264 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1265 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1266 | int len = skb->len; |
bed7ee6e | 1267 | |
a93e3644 | 1268 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1269 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1270 | if (sta) { |
1271 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1272 | case WLAN_ACTION_ADDBA_REQ: | |
1273 | ieee80211_process_addba_request( | |
1274 | local, sta, mgmt, len); | |
1275 | break; | |
1276 | case WLAN_ACTION_ADDBA_RESP: | |
1277 | ieee80211_process_addba_resp(local, sta, | |
1278 | mgmt, len); | |
1279 | break; | |
1280 | case WLAN_ACTION_DELBA: | |
1281 | ieee80211_process_delba(sdata, sta, | |
1282 | mgmt, len); | |
1283 | break; | |
1284 | default: | |
1285 | WARN_ON(1); | |
1286 | break; | |
1287 | } | |
1288 | } | |
a93e3644 | 1289 | mutex_unlock(&local->sta_mtx); |
23a1f8d4 SS |
1290 | } else if (ieee80211_is_action(mgmt->frame_control) && |
1291 | mgmt->u.action.category == WLAN_CATEGORY_VHT) { | |
1292 | switch (mgmt->u.action.u.vht_group_notif.action_code) { | |
1293 | case WLAN_VHT_ACTION_GROUPID_MGMT: | |
1294 | ieee80211_process_mu_groups(sdata, mgmt); | |
1295 | break; | |
1296 | default: | |
1297 | WARN_ON(1); | |
1298 | break; | |
1299 | } | |
344eec67 JB |
1300 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1301 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1302 | /* | |
1303 | * So the frame isn't mgmt, but frame_control | |
1304 | * is at the right place anyway, of course, so | |
1305 | * the if statement is correct. | |
1306 | * | |
1307 | * Warn if we have other data frame types here, | |
1308 | * they must not get here. | |
1309 | */ | |
1310 | WARN_ON(hdr->frame_control & | |
1311 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1312 | WARN_ON(!(hdr->seq_ctrl & | |
1313 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1314 | /* | |
1315 | * This was a fragment of a frame, received while | |
1316 | * a block-ack session was active. That cannot be | |
1317 | * right, so terminate the session. | |
1318 | */ | |
a93e3644 | 1319 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1320 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1321 | if (sta) { |
1322 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1323 | IEEE80211_QOS_CTL_TID_MASK; | |
1324 | ||
1325 | __ieee80211_stop_rx_ba_session( | |
1326 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1327 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1328 | true); | |
344eec67 | 1329 | } |
a93e3644 | 1330 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1331 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1332 | case NL80211_IFTYPE_STATION: |
1333 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1334 | break; | |
1335 | case NL80211_IFTYPE_ADHOC: | |
1336 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1337 | break; | |
1338 | case NL80211_IFTYPE_MESH_POINT: | |
1339 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1340 | break; | |
1341 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1342 | break; | |
1343 | default: | |
1344 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1345 | break; |
1346 | } | |
36b3a628 JB |
1347 | |
1348 | kfree_skb(skb); | |
1fa57d01 JB |
1349 | } |
1350 | ||
1351 | /* then other type-dependent work */ | |
1352 | switch (sdata->vif.type) { | |
1353 | case NL80211_IFTYPE_STATION: | |
1354 | ieee80211_sta_work(sdata); | |
1355 | break; | |
1356 | case NL80211_IFTYPE_ADHOC: | |
1357 | ieee80211_ibss_work(sdata); | |
1358 | break; | |
1359 | case NL80211_IFTYPE_MESH_POINT: | |
1360 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1361 | break; | |
1362 | ieee80211_mesh_work(sdata); | |
1363 | break; | |
239281f8 RL |
1364 | case NL80211_IFTYPE_OCB: |
1365 | ieee80211_ocb_work(sdata); | |
1366 | break; | |
1fa57d01 JB |
1367 | default: |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | ||
04ecd257 JB |
1372 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1373 | { | |
1374 | struct ieee80211_sub_if_data *sdata = | |
1375 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1376 | ||
1377 | ieee80211_recalc_smps(sdata); | |
1378 | } | |
1fa57d01 | 1379 | |
75636525 JB |
1380 | /* |
1381 | * Helper function to initialise an interface to a specific type. | |
1382 | */ | |
1383 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1384 | enum nl80211_iftype type) |
f0706e82 | 1385 | { |
239281f8 RL |
1386 | static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff, |
1387 | 0xff, 0xff, 0xff}; | |
1388 | ||
75636525 JB |
1389 | /* clear type-dependent union */ |
1390 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1391 | ||
1392 | /* and set some type-dependent values */ | |
1393 | sdata->vif.type = type; | |
2ca27bcf | 1394 | sdata->vif.p2p = false; |
60719ffd | 1395 | sdata->wdev.iftype = type; |
75636525 | 1396 | |
a621fa4d JB |
1397 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1398 | sdata->control_port_no_encrypt = false; | |
2475b1cc | 1399 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
d3a58df8 | 1400 | sdata->vif.bss_conf.idle = true; |
a621fa4d | 1401 | |
b53be792 SW |
1402 | sdata->noack_map = 0; |
1403 | ||
f142c6b9 JB |
1404 | /* only monitor/p2p-device differ */ |
1405 | if (sdata->dev) { | |
1406 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1407 | sdata->dev->type = ARPHRD_ETHER; | |
1408 | } | |
75636525 | 1409 | |
35f20c14 | 1410 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1411 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1412 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
73da7d5b | 1413 | INIT_WORK(&sdata->csa_finalize_work, ieee80211_csa_finalize_work); |
484298ad | 1414 | INIT_LIST_HEAD(&sdata->assigned_chanctx_list); |
e3afb920 | 1415 | INIT_LIST_HEAD(&sdata->reserved_chanctx_list); |
35f20c14 | 1416 | |
75636525 | 1417 | switch (type) { |
2ca27bcf JB |
1418 | case NL80211_IFTYPE_P2P_GO: |
1419 | type = NL80211_IFTYPE_AP; | |
1420 | sdata->vif.type = type; | |
1421 | sdata->vif.p2p = true; | |
1422 | /* fall through */ | |
05c914fe | 1423 | case NL80211_IFTYPE_AP: |
d012a605 | 1424 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1425 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
687da132 EG |
1426 | INIT_WORK(&sdata->u.ap.request_smps_work, |
1427 | ieee80211_request_smps_ap_work); | |
ad2d223a | 1428 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
687da132 | 1429 | sdata->u.ap.req_smps = IEEE80211_SMPS_OFF; |
75636525 | 1430 | break; |
2ca27bcf JB |
1431 | case NL80211_IFTYPE_P2P_CLIENT: |
1432 | type = NL80211_IFTYPE_STATION; | |
1433 | sdata->vif.type = type; | |
1434 | sdata->vif.p2p = true; | |
1435 | /* fall through */ | |
05c914fe | 1436 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1437 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1438 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1439 | break; |
6e0bd6c3 | 1440 | case NL80211_IFTYPE_OCB: |
239281f8 RL |
1441 | sdata->vif.bss_conf.bssid = bssid_wildcard; |
1442 | ieee80211_ocb_setup_sdata(sdata); | |
6e0bd6c3 | 1443 | break; |
46900298 | 1444 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1445 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1446 | ieee80211_ibss_setup_sdata(sdata); |
1447 | break; | |
05c914fe | 1448 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1449 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1450 | ieee80211_mesh_init_sdata(sdata); | |
1451 | break; | |
05c914fe | 1452 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1453 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1454 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
d8212184 | 1455 | sdata->u.mntr.flags = MONITOR_FLAG_CONTROL | |
75636525 JB |
1456 | MONITOR_FLAG_OTHER_BSS; |
1457 | break; | |
05c914fe | 1458 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1459 | sdata->vif.bss_conf.bssid = NULL; |
1460 | break; | |
05c914fe | 1461 | case NL80211_IFTYPE_AP_VLAN: |
98104fde | 1462 | case NL80211_IFTYPE_P2P_DEVICE: |
cb3b7d87 | 1463 | case NL80211_IFTYPE_NAN: |
ad2d223a | 1464 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1465 | break; |
05c914fe | 1466 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1467 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1468 | BUG(); |
1469 | break; | |
1470 | } | |
1471 | ||
1472 | ieee80211_debugfs_add_netdev(sdata); | |
1473 | } | |
1474 | ||
34d4bc4d JB |
1475 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1476 | enum nl80211_iftype type) | |
1477 | { | |
1478 | struct ieee80211_local *local = sdata->local; | |
1479 | int ret, err; | |
2ca27bcf JB |
1480 | enum nl80211_iftype internal_type = type; |
1481 | bool p2p = false; | |
34d4bc4d JB |
1482 | |
1483 | ASSERT_RTNL(); | |
1484 | ||
1485 | if (!local->ops->change_interface) | |
1486 | return -EBUSY; | |
1487 | ||
1488 | switch (sdata->vif.type) { | |
1489 | case NL80211_IFTYPE_AP: | |
1490 | case NL80211_IFTYPE_STATION: | |
1491 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1492 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1493 | /* |
1494 | * Could maybe also all others here? | |
1495 | * Just not sure how that interacts | |
1496 | * with the RX/config path e.g. for | |
1497 | * mesh. | |
1498 | */ | |
1499 | break; | |
1500 | default: | |
1501 | return -EBUSY; | |
1502 | } | |
1503 | ||
1504 | switch (type) { | |
1505 | case NL80211_IFTYPE_AP: | |
1506 | case NL80211_IFTYPE_STATION: | |
1507 | case NL80211_IFTYPE_ADHOC: | |
239281f8 | 1508 | case NL80211_IFTYPE_OCB: |
34d4bc4d JB |
1509 | /* |
1510 | * Could probably support everything | |
1511 | * but WDS here (WDS do_open can fail | |
1512 | * under memory pressure, which this | |
1513 | * code isn't prepared to handle). | |
1514 | */ | |
1515 | break; | |
2ca27bcf JB |
1516 | case NL80211_IFTYPE_P2P_CLIENT: |
1517 | p2p = true; | |
1518 | internal_type = NL80211_IFTYPE_STATION; | |
1519 | break; | |
1520 | case NL80211_IFTYPE_P2P_GO: | |
1521 | p2p = true; | |
1522 | internal_type = NL80211_IFTYPE_AP; | |
1523 | break; | |
34d4bc4d JB |
1524 | default: |
1525 | return -EBUSY; | |
1526 | } | |
1527 | ||
2ca27bcf | 1528 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1529 | if (ret) |
1530 | return ret; | |
1531 | ||
1532 | ieee80211_do_stop(sdata, false); | |
1533 | ||
f142c6b9 | 1534 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1535 | |
2ca27bcf | 1536 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d | 1537 | if (ret) |
a9865538 | 1538 | type = ieee80211_vif_type_p2p(&sdata->vif); |
34d4bc4d | 1539 | |
3a25a8c8 JB |
1540 | /* |
1541 | * Ignore return value here, there's not much we can do since | |
1542 | * the driver changed the interface type internally already. | |
1543 | * The warnings will hopefully make driver authors fix it :-) | |
1544 | */ | |
a9865538 | 1545 | ieee80211_check_queues(sdata, type); |
3a25a8c8 | 1546 | |
34d4bc4d JB |
1547 | ieee80211_setup_sdata(sdata, type); |
1548 | ||
f142c6b9 | 1549 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1550 | WARN(err, "type change: do_open returned %d", err); |
1551 | ||
1552 | return ret; | |
1553 | } | |
1554 | ||
f3947e2d | 1555 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1556 | enum nl80211_iftype type) |
75636525 | 1557 | { |
34d4bc4d JB |
1558 | int ret; |
1559 | ||
f3947e2d JB |
1560 | ASSERT_RTNL(); |
1561 | ||
2ca27bcf | 1562 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1563 | return 0; |
1564 | ||
34d4bc4d JB |
1565 | if (ieee80211_sdata_running(sdata)) { |
1566 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1567 | if (ret) | |
1568 | return ret; | |
1569 | } else { | |
1570 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1571 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1572 | ieee80211_setup_sdata(sdata, type); |
1573 | } | |
75636525 JB |
1574 | |
1575 | /* reset some values that shouldn't be kept across type changes */ | |
9bc383de JB |
1576 | if (type == NL80211_IFTYPE_STATION) |
1577 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1578 | |
1579 | return 0; | |
f0706e82 JB |
1580 | } |
1581 | ||
fa9029f8 | 1582 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1583 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1584 | { |
1585 | struct ieee80211_sub_if_data *sdata; | |
1586 | u64 mask, start, addr, val, inc; | |
1587 | u8 *m; | |
1588 | u8 tmp_addr[ETH_ALEN]; | |
1589 | int i; | |
1590 | ||
1591 | /* default ... something at least */ | |
f142c6b9 | 1592 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1593 | |
1594 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1595 | local->hw.wiphy->n_addresses <= 1) | |
1596 | return; | |
1597 | ||
fa9029f8 JB |
1598 | mutex_lock(&local->iflist_mtx); |
1599 | ||
1600 | switch (type) { | |
1601 | case NL80211_IFTYPE_MONITOR: | |
1602 | /* doesn't matter */ | |
1603 | break; | |
1604 | case NL80211_IFTYPE_WDS: | |
1605 | case NL80211_IFTYPE_AP_VLAN: | |
1606 | /* match up with an AP interface */ | |
1607 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1608 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1609 | continue; | |
f142c6b9 | 1610 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1611 | break; |
1612 | } | |
1613 | /* keep default if no AP interface present */ | |
1614 | break; | |
6d71117a JB |
1615 | case NL80211_IFTYPE_P2P_CLIENT: |
1616 | case NL80211_IFTYPE_P2P_GO: | |
30686bf7 | 1617 | if (ieee80211_hw_check(&local->hw, P2P_DEV_ADDR_FOR_INTF)) { |
6d71117a JB |
1618 | list_for_each_entry(sdata, &local->interfaces, list) { |
1619 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1620 | continue; | |
1621 | if (!ieee80211_sdata_running(sdata)) | |
1622 | continue; | |
1623 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1624 | goto out_unlock; | |
1625 | } | |
1626 | } | |
1627 | /* otherwise fall through */ | |
fa9029f8 JB |
1628 | default: |
1629 | /* assign a new address if possible -- try n_addresses first */ | |
1630 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1631 | bool used = false; | |
1632 | ||
1633 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1634 | if (ether_addr_equal(local->hw.wiphy->addresses[i].addr, |
1635 | sdata->vif.addr)) { | |
fa9029f8 JB |
1636 | used = true; |
1637 | break; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | if (!used) { | |
f142c6b9 | 1642 | memcpy(perm_addr, |
fa9029f8 JB |
1643 | local->hw.wiphy->addresses[i].addr, |
1644 | ETH_ALEN); | |
1645 | break; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | /* try mask if available */ | |
1650 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1651 | break; | |
1652 | ||
1653 | m = local->hw.wiphy->addr_mask; | |
1654 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1655 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1656 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1657 | ||
1658 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1659 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1660 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1661 | break; |
1662 | } | |
1663 | ||
ac20976d HS |
1664 | /* |
1665 | * Pick address of existing interface in case user changed | |
1666 | * MAC address manually, default to perm_addr. | |
1667 | */ | |
fa9029f8 | 1668 | m = local->hw.wiphy->perm_addr; |
ac20976d HS |
1669 | list_for_each_entry(sdata, &local->interfaces, list) { |
1670 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
1671 | continue; | |
1672 | m = sdata->vif.addr; | |
1673 | break; | |
1674 | } | |
fa9029f8 JB |
1675 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | |
1676 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1677 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1678 | ||
1679 | inc = 1ULL<<__ffs64(mask); | |
1680 | val = (start & mask); | |
1681 | addr = (start & ~mask) | (val & mask); | |
1682 | do { | |
1683 | bool used = false; | |
1684 | ||
1685 | tmp_addr[5] = addr >> 0*8; | |
1686 | tmp_addr[4] = addr >> 1*8; | |
1687 | tmp_addr[3] = addr >> 2*8; | |
1688 | tmp_addr[2] = addr >> 3*8; | |
1689 | tmp_addr[1] = addr >> 4*8; | |
1690 | tmp_addr[0] = addr >> 5*8; | |
1691 | ||
1692 | val += inc; | |
1693 | ||
1694 | list_for_each_entry(sdata, &local->interfaces, list) { | |
496d7e8e | 1695 | if (ether_addr_equal(tmp_addr, sdata->vif.addr)) { |
fa9029f8 JB |
1696 | used = true; |
1697 | break; | |
1698 | } | |
1699 | } | |
1700 | ||
1701 | if (!used) { | |
f142c6b9 | 1702 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1703 | break; |
1704 | } | |
1705 | addr = (start & ~mask) | (val & mask); | |
1706 | } while (addr != start); | |
1707 | ||
1708 | break; | |
1709 | } | |
1710 | ||
6d71117a | 1711 | out_unlock: |
fa9029f8 JB |
1712 | mutex_unlock(&local->iflist_mtx); |
1713 | } | |
1714 | ||
3e122be0 | 1715 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
6bab2e19 | 1716 | unsigned char name_assign_type, |
84efbb84 | 1717 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1718 | struct vif_params *params) |
f0706e82 | 1719 | { |
f142c6b9 | 1720 | struct net_device *ndev = NULL; |
f0706e82 | 1721 | struct ieee80211_sub_if_data *sdata = NULL; |
ba8c3d6f | 1722 | struct txq_info *txqi; |
80a83cfc | 1723 | void (*if_setup)(struct net_device *dev); |
75636525 | 1724 | int ret, i; |
ded81f6b | 1725 | int txqs = 1; |
f0706e82 JB |
1726 | |
1727 | ASSERT_RTNL(); | |
75636525 | 1728 | |
f142c6b9 JB |
1729 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1730 | struct wireless_dev *wdev; | |
1731 | ||
1732 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1733 | GFP_KERNEL); | |
1734 | if (!sdata) | |
1735 | return -ENOMEM; | |
1736 | wdev = &sdata->wdev; | |
1737 | ||
1738 | sdata->dev = NULL; | |
1739 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1740 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1741 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1742 | } else { | |
ba8c3d6f FF |
1743 | int size = ALIGN(sizeof(*sdata) + local->hw.vif_data_size, |
1744 | sizeof(void *)); | |
1745 | int txq_size = 0; | |
1746 | ||
1747 | if (local->ops->wake_tx_queue) | |
1748 | txq_size += sizeof(struct txq_info) + | |
1749 | local->hw.txq_data_size; | |
1750 | ||
80a83cfc MK |
1751 | if (local->ops->wake_tx_queue) |
1752 | if_setup = ieee80211_if_setup_no_queue; | |
1753 | else | |
1754 | if_setup = ieee80211_if_setup; | |
1755 | ||
f142c6b9 JB |
1756 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1757 | txqs = IEEE80211_NUM_ACS; | |
1758 | ||
ba8c3d6f | 1759 | ndev = alloc_netdev_mqs(size + txq_size, |
6bab2e19 | 1760 | name, name_assign_type, |
80a83cfc | 1761 | if_setup, txqs, 1); |
f142c6b9 JB |
1762 | if (!ndev) |
1763 | return -ENOMEM; | |
1764 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1765 | ||
5a490510 JB |
1766 | ndev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
1767 | if (!ndev->tstats) { | |
1768 | free_netdev(ndev); | |
1769 | return -ENOMEM; | |
1770 | } | |
1771 | ||
f142c6b9 JB |
1772 | ndev->needed_headroom = local->tx_headroom + |
1773 | 4*6 /* four MAC addresses */ | |
1774 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1775 | + 6 /* mesh */ | |
1776 | + 8 /* rfc1042/bridge tunnel */ | |
1777 | - ETH_HLEN /* ethernet hard_header_len */ | |
1778 | + IEEE80211_ENCRYPT_HEADROOM; | |
1779 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1780 | ||
1781 | ret = dev_alloc_name(ndev, ndev->name); | |
1782 | if (ret < 0) { | |
e6436be2 | 1783 | ieee80211_if_free(ndev); |
f142c6b9 JB |
1784 | return ret; |
1785 | } | |
1786 | ||
1787 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
b5dfae02 BG |
1788 | if (params && is_valid_ether_addr(params->macaddr)) |
1789 | memcpy(ndev->dev_addr, params->macaddr, ETH_ALEN); | |
1790 | else | |
1791 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f142c6b9 JB |
1792 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1793 | ||
1794 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1795 | sdata = netdev_priv(ndev); | |
1796 | ndev->ieee80211_ptr = &sdata->wdev; | |
1797 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1798 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1799 | ||
ba8c3d6f FF |
1800 | if (txq_size) { |
1801 | txqi = netdev_priv(ndev) + size; | |
fa962b92 | 1802 | ieee80211_txq_init(sdata, NULL, txqi, 0); |
ba8c3d6f FF |
1803 | } |
1804 | ||
f142c6b9 JB |
1805 | sdata->dev = ndev; |
1806 | } | |
75636525 JB |
1807 | |
1808 | /* initialise type-independent data */ | |
f0706e82 | 1809 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1810 | sdata->local = local; |
75636525 JB |
1811 | |
1812 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1813 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1814 | ||
1815 | INIT_LIST_HEAD(&sdata->key_list); | |
1816 | ||
164eb02d SW |
1817 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1818 | ieee80211_dfs_cac_timer_work); | |
8d1f7ecd JB |
1819 | INIT_DELAYED_WORK(&sdata->dec_tailroom_needed_wk, |
1820 | ieee80211_delayed_tailroom_dec); | |
97f97b1f | 1821 | |
57fbcce3 | 1822 | for (i = 0; i < NUM_NL80211_BANDS; i++) { |
37eb0b16 JM |
1823 | struct ieee80211_supported_band *sband; |
1824 | sband = local->hw.wiphy->bands[i]; | |
1825 | sdata->rc_rateidx_mask[i] = | |
1826 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
b119ad6e LB |
1827 | if (sband) { |
1828 | __le16 cap; | |
1829 | u16 *vht_rate_mask; | |
1830 | ||
19468413 SW |
1831 | memcpy(sdata->rc_rateidx_mcs_mask[i], |
1832 | sband->ht_cap.mcs.rx_mask, | |
1833 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1834 | |
1835 | cap = sband->vht_cap.vht_mcs.rx_mcs_map; | |
1836 | vht_rate_mask = sdata->rc_rateidx_vht_mcs_mask[i]; | |
1837 | ieee80211_get_vht_mask_from_cap(cap, vht_rate_mask); | |
1838 | } else { | |
19468413 SW |
1839 | memset(sdata->rc_rateidx_mcs_mask[i], 0, |
1840 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
b119ad6e LB |
1841 | memset(sdata->rc_rateidx_vht_mcs_mask[i], 0, |
1842 | sizeof(sdata->rc_rateidx_vht_mcs_mask[i])); | |
1843 | } | |
37eb0b16 | 1844 | } |
75636525 | 1845 | |
3a25a8c8 JB |
1846 | ieee80211_set_default_queues(sdata); |
1847 | ||
1ea6f9c0 JB |
1848 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1849 | sdata->user_power_level = local->user_power_level; | |
1850 | ||
2475b1cc MS |
1851 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
1852 | ||
75636525 JB |
1853 | /* setup type-dependent data */ |
1854 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1855 | |
f142c6b9 JB |
1856 | if (ndev) { |
1857 | if (params) { | |
1858 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1859 | if (type == NL80211_IFTYPE_STATION) | |
1860 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1861 | } | |
9bc383de | 1862 | |
f142c6b9 | 1863 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1864 | |
b7ffbd7e JB |
1865 | netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops); |
1866 | ||
f142c6b9 JB |
1867 | ret = register_netdevice(ndev); |
1868 | if (ret) { | |
e6436be2 | 1869 | ieee80211_if_free(ndev); |
f142c6b9 JB |
1870 | return ret; |
1871 | } | |
1872 | } | |
f0706e82 | 1873 | |
c771c9d8 | 1874 | mutex_lock(&local->iflist_mtx); |
79010420 | 1875 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1876 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1877 | |
84efbb84 JB |
1878 | if (new_wdev) |
1879 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1880 | |
f0706e82 | 1881 | return 0; |
f0706e82 JB |
1882 | } |
1883 | ||
f698d856 | 1884 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1885 | { |
f0706e82 | 1886 | ASSERT_RTNL(); |
11a843b7 | 1887 | |
c771c9d8 | 1888 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1889 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1890 | mutex_unlock(&sdata->local->iflist_mtx); |
1891 | ||
75636525 | 1892 | synchronize_rcu(); |
f142c6b9 JB |
1893 | |
1894 | if (sdata->dev) { | |
1895 | unregister_netdevice(sdata->dev); | |
1896 | } else { | |
1897 | cfg80211_unregister_wdev(&sdata->wdev); | |
835112b2 | 1898 | ieee80211_teardown_sdata(sdata); |
f142c6b9 JB |
1899 | kfree(sdata); |
1900 | } | |
1901 | } | |
1902 | ||
1903 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1904 | { | |
1905 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1906 | return; | |
1907 | ieee80211_do_stop(sdata, true); | |
f0706e82 JB |
1908 | } |
1909 | ||
75636525 | 1910 | void ieee80211_remove_interfaces(struct ieee80211_local *local) |
f0706e82 | 1911 | { |
75636525 | 1912 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1913 | LIST_HEAD(unreg_list); |
f142c6b9 | 1914 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1915 | |
1916 | ASSERT_RTNL(); | |
1917 | ||
d8d9008c JB |
1918 | /* Before destroying the interfaces, make sure they're all stopped so |
1919 | * that the hardware is stopped. Otherwise, the driver might still be | |
1920 | * iterating the interfaces during the shutdown, e.g. from a worker | |
1921 | * or from RX processing or similar, and if it does so (using atomic | |
1922 | * iteration) while we're manipulating the list, the iteration will | |
1923 | * crash. | |
1924 | * | |
1925 | * After this, the hardware should be stopped and the driver should | |
1926 | * have stopped all of its activities, so that we can do RCU-unaware | |
1927 | * manipulations of the interface list below. | |
c8aa22db | 1928 | */ |
d8d9008c JB |
1929 | cfg80211_shutdown_all_interfaces(local->hw.wiphy); |
1930 | ||
1931 | WARN(local->open_count, "%s: open count remains %d\n", | |
1932 | wiphy_name(local->hw.wiphy), local->open_count); | |
c8aa22db | 1933 | |
efe117ab | 1934 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1935 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1936 | list_del(&sdata->list); | |
c771c9d8 | 1937 | |
f142c6b9 JB |
1938 | if (sdata->dev) |
1939 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1940 | else | |
1941 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1942 | } |
efe117ab ED |
1943 | mutex_unlock(&local->iflist_mtx); |
1944 | unregister_netdevice_many(&unreg_list); | |
f142c6b9 JB |
1945 | |
1946 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1947 | list_del(&sdata->list); | |
1948 | cfg80211_unregister_wdev(&sdata->wdev); | |
1949 | kfree(sdata); | |
1950 | } | |
f0706e82 | 1951 | } |
5cff20e6 | 1952 | |
47846c9b | 1953 | static int netdev_notify(struct notifier_block *nb, |
351638e7 | 1954 | unsigned long state, void *ptr) |
47846c9b | 1955 | { |
351638e7 | 1956 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
47846c9b JB |
1957 | struct ieee80211_sub_if_data *sdata; |
1958 | ||
1959 | if (state != NETDEV_CHANGENAME) | |
8bd811aa | 1960 | return NOTIFY_DONE; |
47846c9b JB |
1961 | |
1962 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
8bd811aa | 1963 | return NOTIFY_DONE; |
47846c9b JB |
1964 | |
1965 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
8bd811aa | 1966 | return NOTIFY_DONE; |
47846c9b JB |
1967 | |
1968 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2f5265e6 | 1969 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b | 1970 | ieee80211_debugfs_rename_netdev(sdata); |
8bd811aa ZG |
1971 | |
1972 | return NOTIFY_OK; | |
47846c9b JB |
1973 | } |
1974 | ||
1975 | static struct notifier_block mac80211_netdev_notifier = { | |
1976 | .notifier_call = netdev_notify, | |
1977 | }; | |
1978 | ||
1979 | int ieee80211_iface_init(void) | |
1980 | { | |
1981 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1982 | } | |
1983 | ||
1984 | void ieee80211_iface_exit(void) | |
1985 | { | |
1986 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1987 | } |