]>
Commit | Line | Data |
---|---|---|
f0706e82 | 1 | /* |
0d143fe1 JB |
2 | * Interface handling (except master interface) |
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> |
f0706e82 JB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
f0706e82 JB |
14 | #include <linux/kernel.h> |
15 | #include <linux/if_arp.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include <linux/rtnetlink.h> | |
18 | #include <net/mac80211.h> | |
cf0277e7 | 19 | #include <net/ieee80211_radiotap.h> |
f0706e82 JB |
20 | #include "ieee80211_i.h" |
21 | #include "sta_info.h" | |
e9f207f0 | 22 | #include "debugfs_netdev.h" |
ee385855 | 23 | #include "mesh.h" |
0d143fe1 | 24 | #include "led.h" |
24487981 | 25 | #include "driver-ops.h" |
cf0277e7 | 26 | #include "wme.h" |
1be7fe8d | 27 | #include "rate.h" |
0d143fe1 | 28 | |
c771c9d8 JB |
29 | /** |
30 | * DOC: Interface list locking | |
31 | * | |
32 | * The interface list in each struct ieee80211_local is protected | |
33 | * three-fold: | |
34 | * | |
35 | * (1) modifications may only be done under the RTNL | |
36 | * (2) modifications and readers are protected against each other by | |
37 | * the iflist_mtx. | |
38 | * (3) modifications are done in an RCU manner so atomic readers | |
39 | * can traverse the list in RCU-safe blocks. | |
40 | * | |
41 | * As a consequence, reads (traversals) of the list can be protected | |
42 | * by either the RTNL, the iflist_mtx or RCU. | |
43 | */ | |
44 | ||
1ea6f9c0 JB |
45 | bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) |
46 | { | |
47 | struct ieee80211_chanctx_conf *chanctx_conf; | |
48 | int power; | |
49 | ||
50 | rcu_read_lock(); | |
51 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
52 | if (!chanctx_conf) { | |
53 | rcu_read_unlock(); | |
54 | return false; | |
55 | } | |
56 | ||
4bf88530 | 57 | power = chanctx_conf->def.chan->max_power; |
1ea6f9c0 JB |
58 | rcu_read_unlock(); |
59 | ||
60 | if (sdata->user_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
61 | power = min(power, sdata->user_power_level); | |
62 | ||
63 | if (sdata->ap_power_level != IEEE80211_UNSET_POWER_LEVEL) | |
64 | power = min(power, sdata->ap_power_level); | |
65 | ||
66 | if (power != sdata->vif.bss_conf.txpower) { | |
67 | sdata->vif.bss_conf.txpower = power; | |
68 | ieee80211_hw_config(sdata->local, 0); | |
69 | return true; | |
70 | } | |
71 | ||
72 | return false; | |
73 | } | |
74 | ||
75 | void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata) | |
76 | { | |
77 | if (__ieee80211_recalc_txpower(sdata)) | |
78 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER); | |
79 | } | |
c771c9d8 | 80 | |
cc45ae54 JB |
81 | static u32 ieee80211_idle_off(struct ieee80211_local *local, |
82 | const char *reason) | |
83 | { | |
84 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
85 | return 0; | |
86 | ||
87 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
88 | return IEEE80211_CONF_CHANGE_IDLE; | |
89 | } | |
90 | ||
91 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
92 | { | |
93 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
94 | return 0; | |
95 | ||
96 | drv_flush(local, false); | |
97 | ||
98 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
99 | return IEEE80211_CONF_CHANGE_IDLE; | |
100 | } | |
101 | ||
102 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
103 | { | |
104 | struct ieee80211_sub_if_data *sdata; | |
105 | int count = 0; | |
106 | bool working = false, scanning = false; | |
107 | unsigned int led_trig_start = 0, led_trig_stop = 0; | |
108 | struct ieee80211_roc_work *roc; | |
109 | ||
110 | #ifdef CONFIG_PROVE_LOCKING | |
111 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
112 | !lockdep_is_held(&local->iflist_mtx)); | |
113 | #endif | |
114 | lockdep_assert_held(&local->mtx); | |
115 | ||
116 | list_for_each_entry(sdata, &local->interfaces, list) { | |
117 | if (!ieee80211_sdata_running(sdata)) { | |
118 | sdata->vif.bss_conf.idle = true; | |
119 | continue; | |
120 | } | |
121 | ||
122 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
123 | ||
124 | /* do not count disabled managed interfaces */ | |
125 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
126 | !sdata->u.mgd.associated && | |
127 | !sdata->u.mgd.auth_data && | |
128 | !sdata->u.mgd.assoc_data) { | |
129 | sdata->vif.bss_conf.idle = true; | |
130 | continue; | |
131 | } | |
132 | /* do not count unused IBSS interfaces */ | |
133 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
134 | !sdata->u.ibss.ssid_len) { | |
135 | sdata->vif.bss_conf.idle = true; | |
136 | continue; | |
137 | } | |
f142c6b9 JB |
138 | |
139 | if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) | |
140 | continue; | |
141 | ||
cc45ae54 JB |
142 | /* count everything else */ |
143 | sdata->vif.bss_conf.idle = false; | |
144 | count++; | |
145 | } | |
146 | ||
147 | if (!local->ops->remain_on_channel) { | |
148 | list_for_each_entry(roc, &local->roc_list, list) { | |
149 | working = true; | |
150 | roc->sdata->vif.bss_conf.idle = false; | |
151 | } | |
152 | } | |
153 | ||
e2fd5dbc JB |
154 | sdata = rcu_dereference_protected(local->scan_sdata, |
155 | lockdep_is_held(&local->mtx)); | |
156 | if (sdata && !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
cc45ae54 | 157 | scanning = true; |
e2fd5dbc | 158 | sdata->vif.bss_conf.idle = false; |
cc45ae54 JB |
159 | } |
160 | ||
161 | list_for_each_entry(sdata, &local->interfaces, list) { | |
162 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
163 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
164 | sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) | |
cc45ae54 JB |
165 | continue; |
166 | if (sdata->old_idle == sdata->vif.bss_conf.idle) | |
167 | continue; | |
168 | if (!ieee80211_sdata_running(sdata)) | |
169 | continue; | |
170 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
171 | } | |
172 | ||
173 | if (working || scanning) | |
174 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
175 | else | |
176 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
177 | ||
178 | if (count) | |
179 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
180 | else | |
181 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
182 | ||
183 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
184 | ||
185 | if (working) | |
186 | return ieee80211_idle_off(local, "working"); | |
187 | if (scanning) | |
188 | return ieee80211_idle_off(local, "scanning"); | |
189 | if (!count) | |
190 | return ieee80211_idle_on(local); | |
191 | else | |
192 | return ieee80211_idle_off(local, "in use"); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
198 | { | |
199 | u32 chg; | |
200 | ||
201 | mutex_lock(&local->iflist_mtx); | |
202 | chg = __ieee80211_recalc_idle(local); | |
203 | mutex_unlock(&local->iflist_mtx); | |
204 | if (chg) | |
205 | ieee80211_hw_config(local, chg); | |
206 | } | |
207 | ||
0d143fe1 JB |
208 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
209 | { | |
09b1426e | 210 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 211 | return -EINVAL; |
0d143fe1 | 212 | |
0d143fe1 JB |
213 | dev->mtu = new_mtu; |
214 | return 0; | |
215 | } | |
216 | ||
478622e8 HS |
217 | static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) |
218 | { | |
219 | struct ieee80211_sub_if_data *sdata; | |
220 | u64 new, mask, tmp; | |
221 | u8 *m; | |
222 | int ret = 0; | |
223 | ||
224 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
225 | return 0; | |
226 | ||
227 | m = addr; | |
228 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
229 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
230 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
231 | ||
232 | m = local->hw.wiphy->addr_mask; | |
233 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
234 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
235 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
236 | ||
237 | ||
238 | mutex_lock(&local->iflist_mtx); | |
239 | list_for_each_entry(sdata, &local->interfaces, list) { | |
240 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
241 | continue; | |
242 | ||
243 | m = sdata->vif.addr; | |
244 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
245 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
246 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
247 | ||
248 | if ((new & ~mask) != (tmp & ~mask)) { | |
249 | ret = -EINVAL; | |
250 | break; | |
251 | } | |
252 | } | |
253 | mutex_unlock(&local->iflist_mtx); | |
254 | ||
255 | return ret; | |
256 | } | |
257 | ||
47846c9b JB |
258 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
259 | { | |
260 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 261 | struct sockaddr *sa = addr; |
47846c9b JB |
262 | int ret; |
263 | ||
9607e6b6 | 264 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
265 | return -EBUSY; |
266 | ||
478622e8 HS |
267 | ret = ieee80211_verify_mac(sdata->local, sa->sa_data); |
268 | if (ret) | |
269 | return ret; | |
270 | ||
fc5f7577 | 271 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
272 | |
273 | if (ret == 0) | |
fc5f7577 | 274 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
275 | |
276 | return ret; | |
277 | } | |
278 | ||
0d143fe1 JB |
279 | static inline int identical_mac_addr_allowed(int type1, int type2) |
280 | { | |
281 | return type1 == NL80211_IFTYPE_MONITOR || | |
282 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
283 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
284 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
285 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
286 | (type1 == NL80211_IFTYPE_WDS && | |
287 | (type2 == NL80211_IFTYPE_WDS || | |
288 | type2 == NL80211_IFTYPE_AP)) || | |
289 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
290 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
291 | (type2 == NL80211_IFTYPE_AP || | |
292 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
293 | } | |
294 | ||
87490f6d JB |
295 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
296 | enum nl80211_iftype iftype) | |
0d143fe1 | 297 | { |
b4a4bf5d | 298 | struct ieee80211_local *local = sdata->local; |
87490f6d | 299 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 300 | |
87490f6d | 301 | ASSERT_RTNL(); |
0d143fe1 JB |
302 | |
303 | /* we hold the RTNL here so can safely walk the list */ | |
304 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 305 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
306 | /* |
307 | * Allow only a single IBSS interface to be up at any | |
308 | * time. This is restricted because beacon distribution | |
309 | * cannot work properly if both are in the same IBSS. | |
310 | * | |
311 | * To remove this restriction we'd have to disallow them | |
312 | * from setting the same SSID on different IBSS interfaces | |
313 | * belonging to the same hardware. Then, however, we're | |
314 | * faced with having to adopt two different TSF timers... | |
315 | */ | |
87490f6d | 316 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
317 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
318 | return -EBUSY; | |
319 | ||
320 | /* | |
321 | * The remaining checks are only performed for interfaces | |
322 | * with the same MAC address. | |
323 | */ | |
371a255e JB |
324 | if (!ether_addr_equal(sdata->vif.addr, |
325 | nsdata->vif.addr)) | |
0d143fe1 JB |
326 | continue; |
327 | ||
328 | /* | |
329 | * check whether it may have the same address | |
330 | */ | |
87490f6d | 331 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
332 | nsdata->vif.type)) |
333 | return -ENOTUNIQ; | |
334 | ||
335 | /* | |
336 | * can only add VLANs to enabled APs | |
337 | */ | |
87490f6d | 338 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
339 | nsdata->vif.type == NL80211_IFTYPE_AP) |
340 | sdata->bss = &nsdata->u.ap; | |
341 | } | |
342 | } | |
343 | ||
87490f6d JB |
344 | return 0; |
345 | } | |
346 | ||
3a25a8c8 JB |
347 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
348 | { | |
349 | int n_queues = sdata->local->hw.queues; | |
350 | int i; | |
351 | ||
0ef24e52 IP |
352 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { |
353 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
354 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
355 | IEEE80211_INVAL_HW_QUEUE)) | |
356 | return -EINVAL; | |
357 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
358 | n_queues)) | |
359 | return -EINVAL; | |
360 | } | |
3a25a8c8 JB |
361 | } |
362 | ||
bb3e10fb LC |
363 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
364 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
365 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
366 | return 0; | |
367 | } | |
368 | ||
369 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
370 | return -EINVAL; | |
371 | ||
372 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
373 | return -EINVAL; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
85416a4f CL |
378 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
379 | const int offset) | |
380 | { | |
381 | struct ieee80211_local *local = sdata->local; | |
382 | u32 flags = sdata->u.mntr_flags; | |
383 | ||
384 | #define ADJUST(_f, _s) do { \ | |
385 | if (flags & MONITOR_FLAG_##_f) \ | |
386 | local->fif_##_s += offset; \ | |
387 | } while (0) | |
388 | ||
389 | ADJUST(FCSFAIL, fcsfail); | |
390 | ADJUST(PLCPFAIL, plcpfail); | |
391 | ADJUST(CONTROL, control); | |
392 | ADJUST(CONTROL, pspoll); | |
393 | ADJUST(OTHER_BSS, other_bss); | |
394 | ||
395 | #undef ADJUST | |
396 | } | |
397 | ||
3a25a8c8 JB |
398 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
399 | { | |
400 | struct ieee80211_local *local = sdata->local; | |
401 | int i; | |
402 | ||
403 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
404 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
405 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 406 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 407 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
408 | else |
409 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
410 | } |
411 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
412 | } | |
413 | ||
075e0847 | 414 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
415 | { |
416 | struct ieee80211_sub_if_data *sdata; | |
685fb72b | 417 | int ret = 0; |
4b6f1dd6 JB |
418 | |
419 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
420 | return 0; | |
421 | ||
685fb72b JB |
422 | mutex_lock(&local->iflist_mtx); |
423 | ||
4b6f1dd6 | 424 | if (local->monitor_sdata) |
685fb72b | 425 | goto out_unlock; |
4b6f1dd6 JB |
426 | |
427 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
685fb72b JB |
428 | if (!sdata) { |
429 | ret = -ENOMEM; | |
430 | goto out_unlock; | |
431 | } | |
4b6f1dd6 JB |
432 | |
433 | /* set up data */ | |
434 | sdata->local = local; | |
435 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
436 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
437 | wiphy_name(local->hw.wiphy)); | |
438 | ||
3a25a8c8 JB |
439 | ieee80211_set_default_queues(sdata); |
440 | ||
4b6f1dd6 JB |
441 | ret = drv_add_interface(local, sdata); |
442 | if (WARN_ON(ret)) { | |
443 | /* ok .. stupid driver, it asked for this! */ | |
444 | kfree(sdata); | |
685fb72b | 445 | goto out_unlock; |
4b6f1dd6 JB |
446 | } |
447 | ||
3a25a8c8 JB |
448 | ret = ieee80211_check_queues(sdata); |
449 | if (ret) { | |
450 | kfree(sdata); | |
685fb72b | 451 | goto out_unlock; |
3a25a8c8 JB |
452 | } |
453 | ||
4bf88530 | 454 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a JB |
455 | IEEE80211_CHANCTX_EXCLUSIVE); |
456 | if (ret) { | |
457 | drv_remove_interface(local, sdata); | |
458 | kfree(sdata); | |
459 | goto out_unlock; | |
460 | } | |
461 | ||
4b6f1dd6 | 462 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b JB |
463 | out_unlock: |
464 | mutex_unlock(&local->iflist_mtx); | |
465 | return ret; | |
4b6f1dd6 JB |
466 | } |
467 | ||
075e0847 | 468 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
469 | { |
470 | struct ieee80211_sub_if_data *sdata; | |
471 | ||
472 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
473 | return; | |
474 | ||
685fb72b | 475 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 476 | |
685fb72b JB |
477 | sdata = rcu_dereference_protected(local->monitor_sdata, |
478 | lockdep_is_held(&local->iflist_mtx)); | |
4b6f1dd6 | 479 | if (!sdata) |
685fb72b | 480 | goto out_unlock; |
4b6f1dd6 JB |
481 | |
482 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
483 | synchronize_net(); | |
484 | ||
55de908a JB |
485 | ieee80211_vif_release_channel(sdata); |
486 | ||
4b6f1dd6 JB |
487 | drv_remove_interface(local, sdata); |
488 | ||
489 | kfree(sdata); | |
685fb72b JB |
490 | out_unlock: |
491 | mutex_unlock(&local->iflist_mtx); | |
4b6f1dd6 JB |
492 | } |
493 | ||
34d4bc4d JB |
494 | /* |
495 | * NOTE: Be very careful when changing this function, it must NOT return | |
496 | * an error on interface type changes that have been pre-checked, so most | |
497 | * checks should be in ieee80211_check_concurrent_iface. | |
498 | */ | |
f142c6b9 | 499 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 500 | { |
f142c6b9 JB |
501 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
502 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
503 | struct ieee80211_local *local = sdata->local; |
504 | struct sta_info *sta; | |
505 | u32 changed = 0; | |
506 | int res; | |
507 | u32 hw_reconf_flags = 0; | |
508 | ||
0d143fe1 JB |
509 | switch (sdata->vif.type) { |
510 | case NL80211_IFTYPE_WDS: | |
511 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
512 | return -ENOLINK; | |
513 | break; | |
665c93a9 JB |
514 | case NL80211_IFTYPE_AP_VLAN: { |
515 | struct ieee80211_sub_if_data *master; | |
516 | ||
0d143fe1 JB |
517 | if (!sdata->bss) |
518 | return -ENOLINK; | |
665c93a9 | 519 | |
0d143fe1 | 520 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
521 | |
522 | master = container_of(sdata->bss, | |
523 | struct ieee80211_sub_if_data, u.ap); | |
524 | sdata->control_port_protocol = | |
525 | master->control_port_protocol; | |
526 | sdata->control_port_no_encrypt = | |
527 | master->control_port_no_encrypt; | |
0d143fe1 | 528 | break; |
665c93a9 | 529 | } |
0d143fe1 JB |
530 | case NL80211_IFTYPE_AP: |
531 | sdata->bss = &sdata->u.ap; | |
532 | break; | |
533 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
534 | case NL80211_IFTYPE_STATION: |
535 | case NL80211_IFTYPE_MONITOR: | |
536 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 537 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
538 | /* no special treatment */ |
539 | break; | |
540 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 541 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
542 | case NL80211_IFTYPE_P2P_CLIENT: |
543 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
544 | /* cannot happen */ |
545 | WARN_ON(1); | |
546 | break; | |
547 | } | |
548 | ||
549 | if (local->open_count == 0) { | |
24487981 | 550 | res = drv_start(local); |
0d143fe1 JB |
551 | if (res) |
552 | goto err_del_bss; | |
4e6cbfd0 JL |
553 | if (local->ops->napi_poll) |
554 | napi_enable(&local->napi); | |
e8975581 JB |
555 | /* we're brought up, everything changes */ |
556 | hw_reconf_flags = ~0; | |
1f87f7d3 | 557 | ieee80211_led_radio(local, true); |
67408c8c JB |
558 | ieee80211_mod_tpt_led_trig(local, |
559 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
560 | } |
561 | ||
562 | /* | |
bf533e0b JB |
563 | * Copy the hopefully now-present MAC address to |
564 | * this interface, if it has the special null one. | |
0d143fe1 | 565 | */ |
f142c6b9 | 566 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
567 | memcpy(dev->dev_addr, |
568 | local->hw.wiphy->perm_addr, | |
569 | ETH_ALEN); | |
570 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
571 | ||
572 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
573 | res = -EADDRNOTAVAIL; |
574 | goto err_stop; | |
0adc23f5 | 575 | } |
0d143fe1 JB |
576 | } |
577 | ||
0d143fe1 JB |
578 | switch (sdata->vif.type) { |
579 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
580 | /* no need to tell driver, but set carrier and chanctx */ |
581 | if (rtnl_dereference(sdata->bss->beacon)) { | |
582 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 583 | netif_carrier_on(dev); |
4d76d21b | 584 | } else { |
3edaf3e6 | 585 | netif_carrier_off(dev); |
4d76d21b | 586 | } |
0d143fe1 JB |
587 | break; |
588 | case NL80211_IFTYPE_MONITOR: | |
589 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
590 | local->cooked_mntrs++; | |
591 | break; | |
592 | } | |
593 | ||
075e0847 JB |
594 | if (local->monitors == 0 && local->open_count == 0) { |
595 | res = ieee80211_add_virtual_monitor(local); | |
596 | if (res) | |
597 | goto err_stop; | |
598 | } | |
599 | ||
0d143fe1 JB |
600 | /* must be before the call to ieee80211_configure_filter */ |
601 | local->monitors++; | |
e8975581 | 602 | if (local->monitors == 1) { |
0869aea0 JB |
603 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
604 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 605 | } |
0d143fe1 | 606 | |
85416a4f | 607 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 608 | ieee80211_configure_filter(local); |
53e9b1de DG |
609 | |
610 | netif_carrier_on(dev); | |
0d143fe1 | 611 | break; |
0d143fe1 | 612 | default: |
34d4bc4d | 613 | if (coming_up) { |
075e0847 JB |
614 | ieee80211_del_virtual_monitor(local); |
615 | ||
7b7eab6f | 616 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
617 | if (res) |
618 | goto err_stop; | |
3a25a8c8 JB |
619 | res = ieee80211_check_queues(sdata); |
620 | if (res) | |
621 | goto err_del_interface; | |
34d4bc4d | 622 | } |
0d143fe1 | 623 | |
29cbe68c | 624 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 625 | local->fif_pspoll++; |
7be5086d | 626 | local->fif_probe_req++; |
e3b90ca2 | 627 | |
e3b90ca2 | 628 | ieee80211_configure_filter(local); |
7be5086d JB |
629 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
630 | local->fif_probe_req++; | |
a3c9aa51 | 631 | } |
e3b90ca2 | 632 | |
f142c6b9 JB |
633 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
634 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 635 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 636 | |
c405c629 JB |
637 | switch (sdata->vif.type) { |
638 | case NL80211_IFTYPE_STATION: | |
639 | case NL80211_IFTYPE_ADHOC: | |
640 | case NL80211_IFTYPE_AP: | |
641 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 642 | netif_carrier_off(dev); |
c405c629 | 643 | break; |
1411af15 | 644 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 645 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 646 | break; |
c405c629 | 647 | default: |
0d143fe1 | 648 | netif_carrier_on(dev); |
c405c629 | 649 | } |
59034591 EP |
650 | |
651 | /* | |
652 | * set default queue parameters so drivers don't | |
653 | * need to initialise the hardware if the hardware | |
654 | * doesn't start up with sane defaults | |
655 | */ | |
3abead59 | 656 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
657 | } |
658 | ||
2d2080c3 JB |
659 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
660 | ||
0d143fe1 JB |
661 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
662 | /* Create STA entry for the WDS peer */ | |
663 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
664 | GFP_KERNEL); | |
665 | if (!sta) { | |
666 | res = -ENOMEM; | |
667 | goto err_del_interface; | |
668 | } | |
669 | ||
83d5cc01 JB |
670 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
671 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
672 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
673 | |
674 | res = sta_info_insert(sta); | |
675 | if (res) { | |
676 | /* STA has been freed */ | |
677 | goto err_del_interface; | |
678 | } | |
1be7fe8d BJ |
679 | |
680 | rate_control_rate_init(sta); | |
1411af15 | 681 | netif_carrier_on(dev); |
f142c6b9 JB |
682 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
683 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
684 | } |
685 | ||
0d143fe1 JB |
686 | /* |
687 | * set_multicast_list will be invoked by the networking core | |
688 | * which will check whether any increments here were done in | |
689 | * error and sync them down to the hardware as filter flags. | |
690 | */ | |
691 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
692 | atomic_inc(&local->iff_allmultis); | |
693 | ||
694 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
695 | atomic_inc(&local->iff_promiscs); | |
696 | ||
7da7cc1d | 697 | mutex_lock(&local->mtx); |
5cff20e6 | 698 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 699 | mutex_unlock(&local->mtx); |
5cff20e6 | 700 | |
34d4bc4d JB |
701 | if (coming_up) |
702 | local->open_count++; | |
703 | ||
59034591 | 704 | if (hw_reconf_flags) |
e8975581 | 705 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 706 | |
10f644a4 | 707 | ieee80211_recalc_ps(local, -1); |
965bedad | 708 | |
f142c6b9 JB |
709 | if (dev) |
710 | netif_tx_start_all_queues(dev); | |
0d143fe1 JB |
711 | |
712 | return 0; | |
713 | err_del_interface: | |
7b7eab6f | 714 | drv_remove_interface(local, sdata); |
0d143fe1 | 715 | err_stop: |
24487981 JB |
716 | if (!local->open_count) |
717 | drv_stop(local); | |
0d143fe1 JB |
718 | err_del_bss: |
719 | sdata->bss = NULL; | |
720 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
721 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 722 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 723 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
724 | return res; |
725 | } | |
726 | ||
34d4bc4d | 727 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
728 | { |
729 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
730 | int err; |
731 | ||
732 | /* fail early if user set an invalid address */ | |
2fcf2824 | 733 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
734 | return -EADDRNOTAVAIL; |
735 | ||
736 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
737 | if (err) | |
738 | return err; | |
739 | ||
f142c6b9 | 740 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
741 | } |
742 | ||
743 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
744 | bool going_down) | |
745 | { | |
0d143fe1 | 746 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
747 | unsigned long flags; |
748 | struct sk_buff *skb, *tmp; | |
e8975581 | 749 | u32 hw_reconf_flags = 0; |
5061b0c2 | 750 | int i; |
0d143fe1 | 751 | |
c29acf20 RM |
752 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
753 | ||
e2fd5dbc | 754 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
755 | ieee80211_scan_cancel(local); |
756 | ||
0d143fe1 JB |
757 | /* |
758 | * Stop TX on this interface first. | |
759 | */ | |
f142c6b9 JB |
760 | if (sdata->dev) |
761 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 762 | |
2eb278e0 | 763 | ieee80211_roc_purge(sdata); |
af6b6374 | 764 | |
0d143fe1 JB |
765 | /* |
766 | * Remove all stations associated with this interface. | |
767 | * | |
768 | * This must be done before calling ops->remove_interface() | |
769 | * because otherwise we can later invoke ops->sta_notify() | |
770 | * whenever the STAs are removed, and that invalidates driver | |
771 | * assumptions about always getting a vif pointer that is valid | |
772 | * (because if we remove a STA after ops->remove_interface() | |
773 | * the driver will have removed the vif info already!) | |
774 | * | |
b9dcf712 JB |
775 | * This is relevant only in AP, WDS and mesh modes, since in |
776 | * all other modes we've already removed all stations when | |
777 | * disconnecting etc. | |
0d143fe1 JB |
778 | */ |
779 | sta_info_flush(local, sdata); | |
780 | ||
781 | /* | |
782 | * Don't count this interface for promisc/allmulti while it | |
783 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
784 | * on the master interface which will sync these down to the | |
785 | * hardware as filter flags. | |
786 | */ | |
787 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
788 | atomic_dec(&local->iff_allmultis); | |
789 | ||
790 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
791 | atomic_dec(&local->iff_promiscs); | |
792 | ||
7be5086d | 793 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 794 | local->fif_pspoll--; |
7be5086d JB |
795 | local->fif_probe_req--; |
796 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
797 | local->fif_probe_req--; | |
798 | } | |
e3b90ca2 | 799 | |
f142c6b9 JB |
800 | if (sdata->dev) { |
801 | netif_addr_lock_bh(sdata->dev); | |
802 | spin_lock_bh(&local->filter_lock); | |
803 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
804 | sdata->dev->addr_len); | |
805 | spin_unlock_bh(&local->filter_lock); | |
806 | netif_addr_unlock_bh(sdata->dev); | |
3b8d81e0 | 807 | |
f142c6b9 JB |
808 | ieee80211_configure_filter(local); |
809 | } | |
3ac64bee | 810 | |
7cbf0ba5 VN |
811 | del_timer_sync(&local->dynamic_ps_timer); |
812 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 813 | |
04ecd257 JB |
814 | cancel_work_sync(&sdata->recalc_smps); |
815 | ||
0d143fe1 JB |
816 | /* APs need special treatment */ |
817 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 818 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
819 | |
820 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 821 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
822 | u.vlan.list) |
823 | dev_close(vlan->dev); | |
824 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
afa762f6 EP |
825 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
826 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
827 | } |
828 | ||
34d4bc4d JB |
829 | if (going_down) |
830 | local->open_count--; | |
0d143fe1 JB |
831 | |
832 | switch (sdata->vif.type) { | |
833 | case NL80211_IFTYPE_AP_VLAN: | |
834 | list_del(&sdata->u.vlan.list); | |
4d76d21b | 835 | rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); |
0d143fe1 JB |
836 | /* no need to tell driver */ |
837 | break; | |
838 | case NL80211_IFTYPE_MONITOR: | |
839 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
840 | local->cooked_mntrs--; | |
841 | break; | |
842 | } | |
843 | ||
844 | local->monitors--; | |
e8975581 | 845 | if (local->monitors == 0) { |
0869aea0 JB |
846 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
847 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 848 | ieee80211_del_virtual_monitor(local); |
e8975581 | 849 | } |
0d143fe1 | 850 | |
85416a4f | 851 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 852 | ieee80211_configure_filter(local); |
0d143fe1 | 853 | break; |
f142c6b9 JB |
854 | case NL80211_IFTYPE_P2P_DEVICE: |
855 | /* relies on synchronize_rcu() below */ | |
856 | rcu_assign_pointer(local->p2p_sdata, NULL); | |
857 | /* fall through */ | |
0d143fe1 | 858 | default: |
0b7dff4f | 859 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
860 | /* |
861 | * When we get here, the interface is marked down. | |
97f97b1f | 862 | * Call synchronize_rcu() to wait for the RX path |
35f20c14 | 863 | * should it be using the interface and enqueuing |
97f97b1f | 864 | * frames at this very time on another CPU. |
35f20c14 | 865 | */ |
97f97b1f | 866 | synchronize_rcu(); |
35f20c14 JB |
867 | skb_queue_purge(&sdata->skb_queue); |
868 | ||
b9dcf712 JB |
869 | /* |
870 | * Free all remaining keys, there shouldn't be any, | |
871 | * except maybe group keys in AP more or WDS? | |
872 | */ | |
ad0e2b5a | 873 | ieee80211_free_keys(sdata); |
b9dcf712 | 874 | |
34d4bc4d | 875 | if (going_down) |
7b7eab6f | 876 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
877 | } |
878 | ||
879 | sdata->bss = NULL; | |
880 | ||
7da7cc1d | 881 | mutex_lock(&local->mtx); |
5cff20e6 | 882 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 883 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
884 | |
885 | ieee80211_recalc_ps(local, -1); | |
886 | ||
0d143fe1 | 887 | if (local->open_count == 0) { |
4e6cbfd0 JL |
888 | if (local->ops->napi_poll) |
889 | napi_disable(&local->napi); | |
ea77f12f | 890 | ieee80211_clear_tx_pending(local); |
84f6a01c | 891 | ieee80211_stop_device(local); |
0d143fe1 | 892 | |
e8975581 JB |
893 | /* no reconfiguring after stop! */ |
894 | hw_reconf_flags = 0; | |
0d143fe1 JB |
895 | } |
896 | ||
e8975581 | 897 | /* do after stop to avoid reconfiguring when we stop anyway */ |
55de908a | 898 | if (hw_reconf_flags) |
e8975581 JB |
899 | ieee80211_hw_config(local, hw_reconf_flags); |
900 | ||
5061b0c2 JB |
901 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
902 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
903 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
904 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
905 | if (info->control.vif == &sdata->vif) { | |
906 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 907 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
908 | } |
909 | } | |
910 | } | |
911 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
912 | |
913 | if (local->monitors == local->open_count && local->monitors > 0) | |
914 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
915 | } |
916 | ||
917 | static int ieee80211_stop(struct net_device *dev) | |
918 | { | |
919 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
920 | ||
921 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 922 | |
0d143fe1 JB |
923 | return 0; |
924 | } | |
925 | ||
926 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
927 | { | |
0d143fe1 | 928 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 929 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
930 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
931 | ||
932 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
933 | promisc = !!(dev->flags & IFF_PROMISC); | |
934 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
935 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
936 | ||
937 | if (allmulti != sdata_allmulti) { | |
938 | if (dev->flags & IFF_ALLMULTI) | |
939 | atomic_inc(&local->iff_allmultis); | |
940 | else | |
941 | atomic_dec(&local->iff_allmultis); | |
942 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
943 | } | |
944 | ||
945 | if (promisc != sdata_promisc) { | |
946 | if (dev->flags & IFF_PROMISC) | |
947 | atomic_inc(&local->iff_promiscs); | |
948 | else | |
949 | atomic_dec(&local->iff_promiscs); | |
950 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
951 | } | |
3b8d81e0 | 952 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 953 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 954 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 955 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
956 | } |
957 | ||
75636525 JB |
958 | /* |
959 | * Called when the netdev is removed or, by the code below, before | |
960 | * the interface type changes. | |
961 | */ | |
f142c6b9 | 962 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 963 | { |
75636525 | 964 | struct ieee80211_local *local = sdata->local; |
75636525 | 965 | int flushed; |
f0706e82 JB |
966 | int i; |
967 | ||
75636525 JB |
968 | /* free extra data */ |
969 | ieee80211_free_keys(sdata); | |
970 | ||
aee14ceb JM |
971 | ieee80211_debugfs_remove_netdev(sdata); |
972 | ||
f0706e82 | 973 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
974 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
975 | sdata->fragment_next = 0; | |
11a843b7 | 976 | |
b9dcf712 JB |
977 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
978 | mesh_rmc_free(sdata); | |
75636525 JB |
979 | |
980 | flushed = sta_info_flush(local, sdata); | |
981 | WARN_ON(flushed); | |
f0706e82 JB |
982 | } |
983 | ||
f142c6b9 JB |
984 | static void ieee80211_uninit(struct net_device *dev) |
985 | { | |
986 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
987 | } | |
988 | ||
cf0277e7 JB |
989 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
990 | struct sk_buff *skb) | |
991 | { | |
992 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
993 | } | |
994 | ||
587e729e JB |
995 | static const struct net_device_ops ieee80211_dataif_ops = { |
996 | .ndo_open = ieee80211_open, | |
997 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 998 | .ndo_uninit = ieee80211_uninit, |
587e729e | 999 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1000 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1001 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 1002 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1003 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
1004 | }; |
1005 | ||
cf0277e7 JB |
1006 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
1007 | struct sk_buff *skb) | |
1008 | { | |
1009 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1010 | struct ieee80211_local *local = sdata->local; | |
1011 | struct ieee80211_hdr *hdr; | |
1012 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1013 | ||
32c5057b | 1014 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1015 | return 0; |
1016 | ||
1017 | if (skb->len < 4 || | |
b49bb574 | 1018 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1019 | return 0; /* doesn't matter, frame will be dropped */ |
1020 | ||
b49bb574 | 1021 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1022 | |
00e96dec | 1023 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1024 | } |
1025 | ||
587e729e JB |
1026 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1027 | .ndo_open = ieee80211_open, | |
1028 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1029 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1030 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1031 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
1032 | .ndo_change_mtu = ieee80211_change_mtu, |
1033 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 1034 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
1035 | }; |
1036 | ||
1037 | static void ieee80211_if_setup(struct net_device *dev) | |
1038 | { | |
1039 | ether_setup(dev); | |
550fd08c | 1040 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1041 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
1042 | dev->destructor = free_netdev; |
1043 | } | |
1044 | ||
1fa57d01 JB |
1045 | static void ieee80211_iface_work(struct work_struct *work) |
1046 | { | |
1047 | struct ieee80211_sub_if_data *sdata = | |
1048 | container_of(work, struct ieee80211_sub_if_data, work); | |
1049 | struct ieee80211_local *local = sdata->local; | |
1050 | struct sk_buff *skb; | |
344eec67 | 1051 | struct sta_info *sta; |
c1475ca9 | 1052 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
1053 | |
1054 | if (!ieee80211_sdata_running(sdata)) | |
1055 | return; | |
1056 | ||
1057 | if (local->scanning) | |
1058 | return; | |
1059 | ||
1060 | /* | |
1061 | * ieee80211_queue_work() should have picked up most cases, | |
1062 | * here we'll pick the rest. | |
1063 | */ | |
1064 | if (WARN(local->suspended, | |
1065 | "interface work scheduled while going to suspend\n")) | |
1066 | return; | |
1067 | ||
1068 | /* first process frames */ | |
1069 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1070 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1071 | ||
c1475ca9 JB |
1072 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1073 | ra_tid = (void *)&skb->cb; | |
1074 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1075 | ra_tid->tid); | |
1076 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1077 | ra_tid = (void *)&skb->cb; | |
1078 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1079 | ra_tid->tid); | |
1080 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1081 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1082 | int len = skb->len; |
bed7ee6e | 1083 | |
a93e3644 | 1084 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1085 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1086 | if (sta) { |
1087 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1088 | case WLAN_ACTION_ADDBA_REQ: | |
1089 | ieee80211_process_addba_request( | |
1090 | local, sta, mgmt, len); | |
1091 | break; | |
1092 | case WLAN_ACTION_ADDBA_RESP: | |
1093 | ieee80211_process_addba_resp(local, sta, | |
1094 | mgmt, len); | |
1095 | break; | |
1096 | case WLAN_ACTION_DELBA: | |
1097 | ieee80211_process_delba(sdata, sta, | |
1098 | mgmt, len); | |
1099 | break; | |
1100 | default: | |
1101 | WARN_ON(1); | |
1102 | break; | |
1103 | } | |
1104 | } | |
a93e3644 | 1105 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1106 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1107 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1108 | /* | |
1109 | * So the frame isn't mgmt, but frame_control | |
1110 | * is at the right place anyway, of course, so | |
1111 | * the if statement is correct. | |
1112 | * | |
1113 | * Warn if we have other data frame types here, | |
1114 | * they must not get here. | |
1115 | */ | |
1116 | WARN_ON(hdr->frame_control & | |
1117 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1118 | WARN_ON(!(hdr->seq_ctrl & | |
1119 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1120 | /* | |
1121 | * This was a fragment of a frame, received while | |
1122 | * a block-ack session was active. That cannot be | |
1123 | * right, so terminate the session. | |
1124 | */ | |
a93e3644 | 1125 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1126 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1127 | if (sta) { |
1128 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1129 | IEEE80211_QOS_CTL_TID_MASK; | |
1130 | ||
1131 | __ieee80211_stop_rx_ba_session( | |
1132 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1133 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1134 | true); | |
344eec67 | 1135 | } |
a93e3644 | 1136 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1137 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1138 | case NL80211_IFTYPE_STATION: |
1139 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1140 | break; | |
1141 | case NL80211_IFTYPE_ADHOC: | |
1142 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1143 | break; | |
1144 | case NL80211_IFTYPE_MESH_POINT: | |
1145 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1146 | break; | |
1147 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1148 | break; | |
1149 | default: | |
1150 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1151 | break; |
1152 | } | |
36b3a628 JB |
1153 | |
1154 | kfree_skb(skb); | |
1fa57d01 JB |
1155 | } |
1156 | ||
1157 | /* then other type-dependent work */ | |
1158 | switch (sdata->vif.type) { | |
1159 | case NL80211_IFTYPE_STATION: | |
1160 | ieee80211_sta_work(sdata); | |
1161 | break; | |
1162 | case NL80211_IFTYPE_ADHOC: | |
1163 | ieee80211_ibss_work(sdata); | |
1164 | break; | |
1165 | case NL80211_IFTYPE_MESH_POINT: | |
1166 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1167 | break; | |
1168 | ieee80211_mesh_work(sdata); | |
1169 | break; | |
1170 | default: | |
1171 | break; | |
1172 | } | |
1173 | } | |
1174 | ||
04ecd257 JB |
1175 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1176 | { | |
1177 | struct ieee80211_sub_if_data *sdata = | |
1178 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1179 | ||
1180 | ieee80211_recalc_smps(sdata); | |
1181 | } | |
1fa57d01 | 1182 | |
75636525 JB |
1183 | /* |
1184 | * Helper function to initialise an interface to a specific type. | |
1185 | */ | |
1186 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1187 | enum nl80211_iftype type) |
f0706e82 | 1188 | { |
75636525 JB |
1189 | /* clear type-dependent union */ |
1190 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1191 | ||
1192 | /* and set some type-dependent values */ | |
1193 | sdata->vif.type = type; | |
2ca27bcf | 1194 | sdata->vif.p2p = false; |
60719ffd | 1195 | sdata->wdev.iftype = type; |
75636525 | 1196 | |
a621fa4d JB |
1197 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1198 | sdata->control_port_no_encrypt = false; | |
1199 | ||
b53be792 SW |
1200 | sdata->noack_map = 0; |
1201 | ||
f142c6b9 JB |
1202 | /* only monitor/p2p-device differ */ |
1203 | if (sdata->dev) { | |
1204 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1205 | sdata->dev->type = ARPHRD_ETHER; | |
1206 | } | |
75636525 | 1207 | |
35f20c14 | 1208 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1209 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1210 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
35f20c14 | 1211 | |
75636525 | 1212 | switch (type) { |
2ca27bcf JB |
1213 | case NL80211_IFTYPE_P2P_GO: |
1214 | type = NL80211_IFTYPE_AP; | |
1215 | sdata->vif.type = type; | |
1216 | sdata->vif.p2p = true; | |
1217 | /* fall through */ | |
05c914fe | 1218 | case NL80211_IFTYPE_AP: |
d012a605 | 1219 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 JB |
1220 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
1221 | break; | |
2ca27bcf JB |
1222 | case NL80211_IFTYPE_P2P_CLIENT: |
1223 | type = NL80211_IFTYPE_STATION; | |
1224 | sdata->vif.type = type; | |
1225 | sdata->vif.p2p = true; | |
1226 | /* fall through */ | |
05c914fe | 1227 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1228 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1229 | break; |
46900298 JB |
1230 | case NL80211_IFTYPE_ADHOC: |
1231 | ieee80211_ibss_setup_sdata(sdata); | |
1232 | break; | |
05c914fe | 1233 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1234 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1235 | ieee80211_mesh_init_sdata(sdata); | |
1236 | break; | |
05c914fe | 1237 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1238 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1239 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1240 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1241 | MONITOR_FLAG_OTHER_BSS; | |
1242 | break; | |
05c914fe JB |
1243 | case NL80211_IFTYPE_WDS: |
1244 | case NL80211_IFTYPE_AP_VLAN: | |
98104fde | 1245 | case NL80211_IFTYPE_P2P_DEVICE: |
f142c6b9 | 1246 | break; |
05c914fe | 1247 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1248 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1249 | BUG(); |
1250 | break; | |
1251 | } | |
1252 | ||
1253 | ieee80211_debugfs_add_netdev(sdata); | |
1254 | } | |
1255 | ||
34d4bc4d JB |
1256 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1257 | enum nl80211_iftype type) | |
1258 | { | |
1259 | struct ieee80211_local *local = sdata->local; | |
1260 | int ret, err; | |
2ca27bcf JB |
1261 | enum nl80211_iftype internal_type = type; |
1262 | bool p2p = false; | |
34d4bc4d JB |
1263 | |
1264 | ASSERT_RTNL(); | |
1265 | ||
1266 | if (!local->ops->change_interface) | |
1267 | return -EBUSY; | |
1268 | ||
1269 | switch (sdata->vif.type) { | |
1270 | case NL80211_IFTYPE_AP: | |
1271 | case NL80211_IFTYPE_STATION: | |
1272 | case NL80211_IFTYPE_ADHOC: | |
1273 | /* | |
1274 | * Could maybe also all others here? | |
1275 | * Just not sure how that interacts | |
1276 | * with the RX/config path e.g. for | |
1277 | * mesh. | |
1278 | */ | |
1279 | break; | |
1280 | default: | |
1281 | return -EBUSY; | |
1282 | } | |
1283 | ||
1284 | switch (type) { | |
1285 | case NL80211_IFTYPE_AP: | |
1286 | case NL80211_IFTYPE_STATION: | |
1287 | case NL80211_IFTYPE_ADHOC: | |
1288 | /* | |
1289 | * Could probably support everything | |
1290 | * but WDS here (WDS do_open can fail | |
1291 | * under memory pressure, which this | |
1292 | * code isn't prepared to handle). | |
1293 | */ | |
1294 | break; | |
2ca27bcf JB |
1295 | case NL80211_IFTYPE_P2P_CLIENT: |
1296 | p2p = true; | |
1297 | internal_type = NL80211_IFTYPE_STATION; | |
1298 | break; | |
1299 | case NL80211_IFTYPE_P2P_GO: | |
1300 | p2p = true; | |
1301 | internal_type = NL80211_IFTYPE_AP; | |
1302 | break; | |
34d4bc4d JB |
1303 | default: |
1304 | return -EBUSY; | |
1305 | } | |
1306 | ||
2ca27bcf | 1307 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1308 | if (ret) |
1309 | return ret; | |
1310 | ||
1311 | ieee80211_do_stop(sdata, false); | |
1312 | ||
f142c6b9 | 1313 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1314 | |
2ca27bcf | 1315 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1316 | if (ret) |
1317 | type = sdata->vif.type; | |
1318 | ||
3a25a8c8 JB |
1319 | /* |
1320 | * Ignore return value here, there's not much we can do since | |
1321 | * the driver changed the interface type internally already. | |
1322 | * The warnings will hopefully make driver authors fix it :-) | |
1323 | */ | |
1324 | ieee80211_check_queues(sdata); | |
1325 | ||
34d4bc4d JB |
1326 | ieee80211_setup_sdata(sdata, type); |
1327 | ||
f142c6b9 | 1328 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1329 | WARN(err, "type change: do_open returned %d", err); |
1330 | ||
1331 | return ret; | |
1332 | } | |
1333 | ||
f3947e2d | 1334 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1335 | enum nl80211_iftype type) |
75636525 | 1336 | { |
34d4bc4d JB |
1337 | int ret; |
1338 | ||
f3947e2d JB |
1339 | ASSERT_RTNL(); |
1340 | ||
2ca27bcf | 1341 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1342 | return 0; |
1343 | ||
34d4bc4d JB |
1344 | if (ieee80211_sdata_running(sdata)) { |
1345 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1346 | if (ret) | |
1347 | return ret; | |
1348 | } else { | |
1349 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1350 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1351 | ieee80211_setup_sdata(sdata, type); |
1352 | } | |
75636525 JB |
1353 | |
1354 | /* reset some values that shouldn't be kept across type changes */ | |
75636525 | 1355 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1356 | if (type == NL80211_IFTYPE_STATION) |
1357 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1358 | |
1359 | return 0; | |
f0706e82 JB |
1360 | } |
1361 | ||
fa9029f8 | 1362 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1363 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1364 | { |
1365 | struct ieee80211_sub_if_data *sdata; | |
1366 | u64 mask, start, addr, val, inc; | |
1367 | u8 *m; | |
1368 | u8 tmp_addr[ETH_ALEN]; | |
1369 | int i; | |
1370 | ||
1371 | /* default ... something at least */ | |
f142c6b9 | 1372 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1373 | |
1374 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1375 | local->hw.wiphy->n_addresses <= 1) | |
1376 | return; | |
1377 | ||
fa9029f8 JB |
1378 | mutex_lock(&local->iflist_mtx); |
1379 | ||
1380 | switch (type) { | |
1381 | case NL80211_IFTYPE_MONITOR: | |
1382 | /* doesn't matter */ | |
1383 | break; | |
1384 | case NL80211_IFTYPE_WDS: | |
1385 | case NL80211_IFTYPE_AP_VLAN: | |
1386 | /* match up with an AP interface */ | |
1387 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1388 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1389 | continue; | |
f142c6b9 | 1390 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1391 | break; |
1392 | } | |
1393 | /* keep default if no AP interface present */ | |
1394 | break; | |
6d71117a JB |
1395 | case NL80211_IFTYPE_P2P_CLIENT: |
1396 | case NL80211_IFTYPE_P2P_GO: | |
1397 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1398 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1399 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1400 | continue; | |
1401 | if (!ieee80211_sdata_running(sdata)) | |
1402 | continue; | |
1403 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1404 | goto out_unlock; | |
1405 | } | |
1406 | } | |
1407 | /* otherwise fall through */ | |
fa9029f8 JB |
1408 | default: |
1409 | /* assign a new address if possible -- try n_addresses first */ | |
1410 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1411 | bool used = false; | |
1412 | ||
1413 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1414 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1415 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1416 | used = true; | |
1417 | break; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (!used) { | |
f142c6b9 | 1422 | memcpy(perm_addr, |
fa9029f8 JB |
1423 | local->hw.wiphy->addresses[i].addr, |
1424 | ETH_ALEN); | |
1425 | break; | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | /* try mask if available */ | |
1430 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1431 | break; | |
1432 | ||
1433 | m = local->hw.wiphy->addr_mask; | |
1434 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1435 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1436 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1437 | ||
1438 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1439 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1440 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1441 | break; |
1442 | } | |
1443 | ||
1444 | m = local->hw.wiphy->perm_addr; | |
1445 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1446 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1447 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1448 | ||
1449 | inc = 1ULL<<__ffs64(mask); | |
1450 | val = (start & mask); | |
1451 | addr = (start & ~mask) | (val & mask); | |
1452 | do { | |
1453 | bool used = false; | |
1454 | ||
1455 | tmp_addr[5] = addr >> 0*8; | |
1456 | tmp_addr[4] = addr >> 1*8; | |
1457 | tmp_addr[3] = addr >> 2*8; | |
1458 | tmp_addr[2] = addr >> 3*8; | |
1459 | tmp_addr[1] = addr >> 4*8; | |
1460 | tmp_addr[0] = addr >> 5*8; | |
1461 | ||
1462 | val += inc; | |
1463 | ||
1464 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1465 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1466 | ETH_ALEN) == 0) { | |
1467 | used = true; | |
1468 | break; | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | if (!used) { | |
f142c6b9 | 1473 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1474 | break; |
1475 | } | |
1476 | addr = (start & ~mask) | (val & mask); | |
1477 | } while (addr != start); | |
1478 | ||
1479 | break; | |
1480 | } | |
1481 | ||
6d71117a | 1482 | out_unlock: |
fa9029f8 JB |
1483 | mutex_unlock(&local->iflist_mtx); |
1484 | } | |
1485 | ||
97f97b1f JB |
1486 | static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) |
1487 | { | |
1488 | struct ieee80211_sub_if_data *sdata; | |
1489 | ||
1490 | sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); | |
1491 | ||
1492 | ieee80211_cleanup_sdata_stas(sdata); | |
1493 | } | |
1494 | ||
3e122be0 | 1495 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1496 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1497 | struct vif_params *params) |
f0706e82 | 1498 | { |
f142c6b9 | 1499 | struct net_device *ndev = NULL; |
f0706e82 | 1500 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1501 | int ret, i; |
ded81f6b | 1502 | int txqs = 1; |
f0706e82 JB |
1503 | |
1504 | ASSERT_RTNL(); | |
75636525 | 1505 | |
f142c6b9 JB |
1506 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1507 | struct wireless_dev *wdev; | |
1508 | ||
1509 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1510 | GFP_KERNEL); | |
1511 | if (!sdata) | |
1512 | return -ENOMEM; | |
1513 | wdev = &sdata->wdev; | |
1514 | ||
1515 | sdata->dev = NULL; | |
1516 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1517 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1518 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1519 | } else { | |
1520 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1521 | txqs = IEEE80211_NUM_ACS; | |
1522 | ||
1523 | ndev = alloc_netdev_mqs(sizeof(*sdata) + | |
1524 | local->hw.vif_data_size, | |
1525 | name, ieee80211_if_setup, txqs, 1); | |
1526 | if (!ndev) | |
1527 | return -ENOMEM; | |
1528 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1529 | ||
1530 | ndev->needed_headroom = local->tx_headroom + | |
1531 | 4*6 /* four MAC addresses */ | |
1532 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1533 | + 6 /* mesh */ | |
1534 | + 8 /* rfc1042/bridge tunnel */ | |
1535 | - ETH_HLEN /* ethernet hard_header_len */ | |
1536 | + IEEE80211_ENCRYPT_HEADROOM; | |
1537 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1538 | ||
1539 | ret = dev_alloc_name(ndev, ndev->name); | |
1540 | if (ret < 0) { | |
1541 | free_netdev(ndev); | |
1542 | return ret; | |
1543 | } | |
1544 | ||
1545 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
1546 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
1547 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); | |
1548 | ||
1549 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1550 | sdata = netdev_priv(ndev); | |
1551 | ndev->ieee80211_ptr = &sdata->wdev; | |
1552 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1553 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1554 | ||
1555 | sdata->dev = ndev; | |
1556 | } | |
75636525 JB |
1557 | |
1558 | /* initialise type-independent data */ | |
f0706e82 | 1559 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1560 | sdata->local = local; |
68542962 JO |
1561 | #ifdef CONFIG_INET |
1562 | sdata->arp_filter_state = true; | |
1563 | #endif | |
75636525 JB |
1564 | |
1565 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1566 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1567 | ||
1568 | INIT_LIST_HEAD(&sdata->key_list); | |
1569 | ||
97f97b1f JB |
1570 | spin_lock_init(&sdata->cleanup_stations_lock); |
1571 | INIT_LIST_HEAD(&sdata->cleanup_stations); | |
1572 | INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); | |
1573 | ||
37eb0b16 JM |
1574 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1575 | struct ieee80211_supported_band *sband; | |
1576 | sband = local->hw.wiphy->bands[i]; | |
1577 | sdata->rc_rateidx_mask[i] = | |
1578 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1579 | if (sband) |
1580 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1581 | sband->ht_cap.mcs.rx_mask, | |
1582 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1583 | else | |
1584 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1585 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1586 | } |
75636525 | 1587 | |
3a25a8c8 JB |
1588 | ieee80211_set_default_queues(sdata); |
1589 | ||
1ea6f9c0 JB |
1590 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1591 | sdata->user_power_level = local->user_power_level; | |
1592 | ||
75636525 JB |
1593 | /* setup type-dependent data */ |
1594 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1595 | |
f142c6b9 JB |
1596 | if (ndev) { |
1597 | if (params) { | |
1598 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1599 | if (type == NL80211_IFTYPE_STATION) | |
1600 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1601 | } | |
9bc383de | 1602 | |
f142c6b9 | 1603 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1604 | |
f142c6b9 JB |
1605 | ret = register_netdevice(ndev); |
1606 | if (ret) { | |
1607 | free_netdev(ndev); | |
1608 | return ret; | |
1609 | } | |
1610 | } | |
f0706e82 | 1611 | |
c771c9d8 | 1612 | mutex_lock(&local->iflist_mtx); |
79010420 | 1613 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1614 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1615 | |
84efbb84 JB |
1616 | if (new_wdev) |
1617 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1618 | |
f0706e82 | 1619 | return 0; |
f0706e82 JB |
1620 | } |
1621 | ||
f698d856 | 1622 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1623 | { |
f0706e82 | 1624 | ASSERT_RTNL(); |
11a843b7 | 1625 | |
c771c9d8 | 1626 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1627 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1628 | mutex_unlock(&sdata->local->iflist_mtx); |
1629 | ||
75636525 | 1630 | synchronize_rcu(); |
f142c6b9 JB |
1631 | |
1632 | if (sdata->dev) { | |
1633 | unregister_netdevice(sdata->dev); | |
1634 | } else { | |
1635 | cfg80211_unregister_wdev(&sdata->wdev); | |
1636 | kfree(sdata); | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1641 | { | |
1642 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1643 | return; | |
1644 | ieee80211_do_stop(sdata, true); | |
1645 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1646 | } |
1647 | ||
75636525 JB |
1648 | /* |
1649 | * Remove all interfaces, may only be called at hardware unregistration | |
1650 | * time because it doesn't do RCU-safe list removals. | |
1651 | */ | |
1652 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1653 | { |
75636525 | 1654 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1655 | LIST_HEAD(unreg_list); |
f142c6b9 | 1656 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1657 | |
1658 | ASSERT_RTNL(); | |
1659 | ||
efe117ab | 1660 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1661 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1662 | list_del(&sdata->list); | |
c771c9d8 | 1663 | |
f142c6b9 JB |
1664 | if (sdata->dev) |
1665 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1666 | else | |
1667 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1668 | } |
efe117ab ED |
1669 | mutex_unlock(&local->iflist_mtx); |
1670 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1671 | list_del(&unreg_list); |
f142c6b9 JB |
1672 | |
1673 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1674 | list_del(&sdata->list); | |
1675 | cfg80211_unregister_wdev(&sdata->wdev); | |
1676 | kfree(sdata); | |
1677 | } | |
f0706e82 | 1678 | } |
5cff20e6 | 1679 | |
47846c9b JB |
1680 | static int netdev_notify(struct notifier_block *nb, |
1681 | unsigned long state, | |
1682 | void *ndev) | |
1683 | { | |
1684 | struct net_device *dev = ndev; | |
1685 | struct ieee80211_sub_if_data *sdata; | |
1686 | ||
1687 | if (state != NETDEV_CHANGENAME) | |
1688 | return 0; | |
1689 | ||
1690 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1691 | return 0; | |
1692 | ||
1693 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1694 | return 0; | |
1695 | ||
1696 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1697 | ||
2f5265e6 | 1698 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1699 | |
1700 | ieee80211_debugfs_rename_netdev(sdata); | |
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | static struct notifier_block mac80211_netdev_notifier = { | |
1705 | .notifier_call = netdev_notify, | |
1706 | }; | |
1707 | ||
1708 | int ieee80211_iface_init(void) | |
1709 | { | |
1710 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1711 | } | |
1712 | ||
1713 | void ieee80211_iface_exit(void) | |
1714 | { | |
1715 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1716 | } |