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 | ||
f1e3e051 JB |
154 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
155 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 JB |
156 | |
157 | list_for_each_entry(sdata, &local->interfaces, list) { | |
158 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
159 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
160 | sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) | |
cc45ae54 JB |
161 | continue; |
162 | if (sdata->old_idle == sdata->vif.bss_conf.idle) | |
163 | continue; | |
164 | if (!ieee80211_sdata_running(sdata)) | |
165 | continue; | |
166 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
167 | } | |
168 | ||
169 | if (working || scanning) | |
170 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
171 | else | |
172 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
173 | ||
174 | if (count) | |
175 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
176 | else | |
177 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
178 | ||
179 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
180 | ||
181 | if (working) | |
182 | return ieee80211_idle_off(local, "working"); | |
183 | if (scanning) | |
184 | return ieee80211_idle_off(local, "scanning"); | |
185 | if (!count) | |
186 | return ieee80211_idle_on(local); | |
187 | else | |
188 | return ieee80211_idle_off(local, "in use"); | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
194 | { | |
195 | u32 chg; | |
196 | ||
197 | mutex_lock(&local->iflist_mtx); | |
198 | chg = __ieee80211_recalc_idle(local); | |
199 | mutex_unlock(&local->iflist_mtx); | |
200 | if (chg) | |
201 | ieee80211_hw_config(local, chg); | |
202 | } | |
203 | ||
0d143fe1 JB |
204 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
205 | { | |
09b1426e | 206 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 207 | return -EINVAL; |
0d143fe1 | 208 | |
0d143fe1 JB |
209 | dev->mtu = new_mtu; |
210 | return 0; | |
211 | } | |
212 | ||
478622e8 HS |
213 | static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) |
214 | { | |
215 | struct ieee80211_sub_if_data *sdata; | |
216 | u64 new, mask, tmp; | |
217 | u8 *m; | |
218 | int ret = 0; | |
219 | ||
220 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
221 | return 0; | |
222 | ||
223 | m = addr; | |
224 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
225 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
226 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
227 | ||
228 | m = local->hw.wiphy->addr_mask; | |
229 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
230 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
231 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
232 | ||
233 | ||
234 | mutex_lock(&local->iflist_mtx); | |
235 | list_for_each_entry(sdata, &local->interfaces, list) { | |
236 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
237 | continue; | |
238 | ||
239 | m = sdata->vif.addr; | |
240 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
241 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
242 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
243 | ||
244 | if ((new & ~mask) != (tmp & ~mask)) { | |
245 | ret = -EINVAL; | |
246 | break; | |
247 | } | |
248 | } | |
249 | mutex_unlock(&local->iflist_mtx); | |
250 | ||
251 | return ret; | |
252 | } | |
253 | ||
47846c9b JB |
254 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
255 | { | |
256 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 257 | struct sockaddr *sa = addr; |
47846c9b JB |
258 | int ret; |
259 | ||
9607e6b6 | 260 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
261 | return -EBUSY; |
262 | ||
478622e8 HS |
263 | ret = ieee80211_verify_mac(sdata->local, sa->sa_data); |
264 | if (ret) | |
265 | return ret; | |
266 | ||
fc5f7577 | 267 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
268 | |
269 | if (ret == 0) | |
fc5f7577 | 270 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
271 | |
272 | return ret; | |
273 | } | |
274 | ||
0d143fe1 JB |
275 | static inline int identical_mac_addr_allowed(int type1, int type2) |
276 | { | |
277 | return type1 == NL80211_IFTYPE_MONITOR || | |
278 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
279 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
280 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
281 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
282 | (type1 == NL80211_IFTYPE_WDS && | |
283 | (type2 == NL80211_IFTYPE_WDS || | |
284 | type2 == NL80211_IFTYPE_AP)) || | |
285 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
286 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
287 | (type2 == NL80211_IFTYPE_AP || | |
288 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
289 | } | |
290 | ||
87490f6d JB |
291 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
292 | enum nl80211_iftype iftype) | |
0d143fe1 | 293 | { |
b4a4bf5d | 294 | struct ieee80211_local *local = sdata->local; |
87490f6d | 295 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 296 | |
87490f6d | 297 | ASSERT_RTNL(); |
0d143fe1 JB |
298 | |
299 | /* we hold the RTNL here so can safely walk the list */ | |
300 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 301 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
302 | /* |
303 | * Allow only a single IBSS interface to be up at any | |
304 | * time. This is restricted because beacon distribution | |
305 | * cannot work properly if both are in the same IBSS. | |
306 | * | |
307 | * To remove this restriction we'd have to disallow them | |
308 | * from setting the same SSID on different IBSS interfaces | |
309 | * belonging to the same hardware. Then, however, we're | |
310 | * faced with having to adopt two different TSF timers... | |
311 | */ | |
87490f6d | 312 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
313 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
314 | return -EBUSY; | |
315 | ||
316 | /* | |
317 | * The remaining checks are only performed for interfaces | |
318 | * with the same MAC address. | |
319 | */ | |
371a255e JB |
320 | if (!ether_addr_equal(sdata->vif.addr, |
321 | nsdata->vif.addr)) | |
0d143fe1 JB |
322 | continue; |
323 | ||
324 | /* | |
325 | * check whether it may have the same address | |
326 | */ | |
87490f6d | 327 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
328 | nsdata->vif.type)) |
329 | return -ENOTUNIQ; | |
330 | ||
331 | /* | |
332 | * can only add VLANs to enabled APs | |
333 | */ | |
87490f6d | 334 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
335 | nsdata->vif.type == NL80211_IFTYPE_AP) |
336 | sdata->bss = &nsdata->u.ap; | |
337 | } | |
338 | } | |
339 | ||
87490f6d JB |
340 | return 0; |
341 | } | |
342 | ||
3a25a8c8 JB |
343 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
344 | { | |
345 | int n_queues = sdata->local->hw.queues; | |
346 | int i; | |
347 | ||
0ef24e52 IP |
348 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { |
349 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
350 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
351 | IEEE80211_INVAL_HW_QUEUE)) | |
352 | return -EINVAL; | |
353 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
354 | n_queues)) | |
355 | return -EINVAL; | |
356 | } | |
3a25a8c8 JB |
357 | } |
358 | ||
bb3e10fb LC |
359 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
360 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
361 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
362 | return 0; | |
363 | } | |
364 | ||
365 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
366 | return -EINVAL; | |
367 | ||
368 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
369 | return -EINVAL; | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
85416a4f CL |
374 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
375 | const int offset) | |
376 | { | |
377 | struct ieee80211_local *local = sdata->local; | |
378 | u32 flags = sdata->u.mntr_flags; | |
379 | ||
380 | #define ADJUST(_f, _s) do { \ | |
381 | if (flags & MONITOR_FLAG_##_f) \ | |
382 | local->fif_##_s += offset; \ | |
383 | } while (0) | |
384 | ||
385 | ADJUST(FCSFAIL, fcsfail); | |
386 | ADJUST(PLCPFAIL, plcpfail); | |
387 | ADJUST(CONTROL, control); | |
388 | ADJUST(CONTROL, pspoll); | |
389 | ADJUST(OTHER_BSS, other_bss); | |
390 | ||
391 | #undef ADJUST | |
392 | } | |
393 | ||
3a25a8c8 JB |
394 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
395 | { | |
396 | struct ieee80211_local *local = sdata->local; | |
397 | int i; | |
398 | ||
399 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
400 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
401 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 402 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 403 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
404 | else |
405 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
406 | } |
407 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
408 | } | |
409 | ||
075e0847 | 410 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
411 | { |
412 | struct ieee80211_sub_if_data *sdata; | |
685fb72b | 413 | int ret = 0; |
4b6f1dd6 JB |
414 | |
415 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
416 | return 0; | |
417 | ||
685fb72b JB |
418 | mutex_lock(&local->iflist_mtx); |
419 | ||
4b6f1dd6 | 420 | if (local->monitor_sdata) |
685fb72b | 421 | goto out_unlock; |
4b6f1dd6 JB |
422 | |
423 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
685fb72b JB |
424 | if (!sdata) { |
425 | ret = -ENOMEM; | |
426 | goto out_unlock; | |
427 | } | |
4b6f1dd6 JB |
428 | |
429 | /* set up data */ | |
430 | sdata->local = local; | |
431 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
432 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
433 | wiphy_name(local->hw.wiphy)); | |
434 | ||
3a25a8c8 JB |
435 | ieee80211_set_default_queues(sdata); |
436 | ||
4b6f1dd6 JB |
437 | ret = drv_add_interface(local, sdata); |
438 | if (WARN_ON(ret)) { | |
439 | /* ok .. stupid driver, it asked for this! */ | |
440 | kfree(sdata); | |
685fb72b | 441 | goto out_unlock; |
4b6f1dd6 JB |
442 | } |
443 | ||
3a25a8c8 JB |
444 | ret = ieee80211_check_queues(sdata); |
445 | if (ret) { | |
446 | kfree(sdata); | |
685fb72b | 447 | goto out_unlock; |
3a25a8c8 JB |
448 | } |
449 | ||
4bf88530 | 450 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a JB |
451 | IEEE80211_CHANCTX_EXCLUSIVE); |
452 | if (ret) { | |
453 | drv_remove_interface(local, sdata); | |
454 | kfree(sdata); | |
455 | goto out_unlock; | |
456 | } | |
457 | ||
4b6f1dd6 | 458 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b JB |
459 | out_unlock: |
460 | mutex_unlock(&local->iflist_mtx); | |
461 | return ret; | |
4b6f1dd6 JB |
462 | } |
463 | ||
075e0847 | 464 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
465 | { |
466 | struct ieee80211_sub_if_data *sdata; | |
467 | ||
468 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
469 | return; | |
470 | ||
685fb72b | 471 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 472 | |
685fb72b JB |
473 | sdata = rcu_dereference_protected(local->monitor_sdata, |
474 | lockdep_is_held(&local->iflist_mtx)); | |
4b6f1dd6 | 475 | if (!sdata) |
685fb72b | 476 | goto out_unlock; |
4b6f1dd6 JB |
477 | |
478 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
479 | synchronize_net(); | |
480 | ||
55de908a JB |
481 | ieee80211_vif_release_channel(sdata); |
482 | ||
4b6f1dd6 JB |
483 | drv_remove_interface(local, sdata); |
484 | ||
485 | kfree(sdata); | |
685fb72b JB |
486 | out_unlock: |
487 | mutex_unlock(&local->iflist_mtx); | |
4b6f1dd6 JB |
488 | } |
489 | ||
34d4bc4d JB |
490 | /* |
491 | * NOTE: Be very careful when changing this function, it must NOT return | |
492 | * an error on interface type changes that have been pre-checked, so most | |
493 | * checks should be in ieee80211_check_concurrent_iface. | |
494 | */ | |
f142c6b9 | 495 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 496 | { |
f142c6b9 JB |
497 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
498 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
499 | struct ieee80211_local *local = sdata->local; |
500 | struct sta_info *sta; | |
501 | u32 changed = 0; | |
502 | int res; | |
503 | u32 hw_reconf_flags = 0; | |
504 | ||
0d143fe1 JB |
505 | switch (sdata->vif.type) { |
506 | case NL80211_IFTYPE_WDS: | |
507 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
508 | return -ENOLINK; | |
509 | break; | |
665c93a9 JB |
510 | case NL80211_IFTYPE_AP_VLAN: { |
511 | struct ieee80211_sub_if_data *master; | |
512 | ||
0d143fe1 JB |
513 | if (!sdata->bss) |
514 | return -ENOLINK; | |
665c93a9 | 515 | |
0d143fe1 | 516 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
517 | |
518 | master = container_of(sdata->bss, | |
519 | struct ieee80211_sub_if_data, u.ap); | |
520 | sdata->control_port_protocol = | |
521 | master->control_port_protocol; | |
522 | sdata->control_port_no_encrypt = | |
523 | master->control_port_no_encrypt; | |
0d143fe1 | 524 | break; |
665c93a9 | 525 | } |
0d143fe1 JB |
526 | case NL80211_IFTYPE_AP: |
527 | sdata->bss = &sdata->u.ap; | |
528 | break; | |
529 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
530 | case NL80211_IFTYPE_STATION: |
531 | case NL80211_IFTYPE_MONITOR: | |
532 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 533 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
534 | /* no special treatment */ |
535 | break; | |
536 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 537 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
538 | case NL80211_IFTYPE_P2P_CLIENT: |
539 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
540 | /* cannot happen */ |
541 | WARN_ON(1); | |
542 | break; | |
543 | } | |
544 | ||
545 | if (local->open_count == 0) { | |
24487981 | 546 | res = drv_start(local); |
0d143fe1 JB |
547 | if (res) |
548 | goto err_del_bss; | |
4e6cbfd0 JL |
549 | if (local->ops->napi_poll) |
550 | napi_enable(&local->napi); | |
e8975581 JB |
551 | /* we're brought up, everything changes */ |
552 | hw_reconf_flags = ~0; | |
1f87f7d3 | 553 | ieee80211_led_radio(local, true); |
67408c8c JB |
554 | ieee80211_mod_tpt_led_trig(local, |
555 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
556 | } |
557 | ||
558 | /* | |
bf533e0b JB |
559 | * Copy the hopefully now-present MAC address to |
560 | * this interface, if it has the special null one. | |
0d143fe1 | 561 | */ |
f142c6b9 | 562 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
563 | memcpy(dev->dev_addr, |
564 | local->hw.wiphy->perm_addr, | |
565 | ETH_ALEN); | |
566 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
567 | ||
568 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
569 | res = -EADDRNOTAVAIL; |
570 | goto err_stop; | |
0adc23f5 | 571 | } |
0d143fe1 JB |
572 | } |
573 | ||
0d143fe1 JB |
574 | switch (sdata->vif.type) { |
575 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
576 | /* no need to tell driver, but set carrier and chanctx */ |
577 | if (rtnl_dereference(sdata->bss->beacon)) { | |
578 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 579 | netif_carrier_on(dev); |
4d76d21b | 580 | } else { |
3edaf3e6 | 581 | netif_carrier_off(dev); |
4d76d21b | 582 | } |
0d143fe1 JB |
583 | break; |
584 | case NL80211_IFTYPE_MONITOR: | |
585 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
586 | local->cooked_mntrs++; | |
587 | break; | |
588 | } | |
589 | ||
075e0847 JB |
590 | if (local->monitors == 0 && local->open_count == 0) { |
591 | res = ieee80211_add_virtual_monitor(local); | |
592 | if (res) | |
593 | goto err_stop; | |
594 | } | |
595 | ||
0d143fe1 JB |
596 | /* must be before the call to ieee80211_configure_filter */ |
597 | local->monitors++; | |
e8975581 | 598 | if (local->monitors == 1) { |
0869aea0 JB |
599 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
600 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 601 | } |
0d143fe1 | 602 | |
85416a4f | 603 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 604 | ieee80211_configure_filter(local); |
53e9b1de DG |
605 | |
606 | netif_carrier_on(dev); | |
0d143fe1 | 607 | break; |
0d143fe1 | 608 | default: |
34d4bc4d | 609 | if (coming_up) { |
075e0847 JB |
610 | ieee80211_del_virtual_monitor(local); |
611 | ||
7b7eab6f | 612 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
613 | if (res) |
614 | goto err_stop; | |
3a25a8c8 JB |
615 | res = ieee80211_check_queues(sdata); |
616 | if (res) | |
617 | goto err_del_interface; | |
34d4bc4d | 618 | } |
0d143fe1 | 619 | |
b207cdb0 AB |
620 | drv_add_interface_debugfs(local, sdata); |
621 | ||
29cbe68c | 622 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 623 | local->fif_pspoll++; |
7be5086d | 624 | local->fif_probe_req++; |
e3b90ca2 | 625 | |
e3b90ca2 | 626 | ieee80211_configure_filter(local); |
7be5086d JB |
627 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
628 | local->fif_probe_req++; | |
a3c9aa51 | 629 | } |
e3b90ca2 | 630 | |
f142c6b9 JB |
631 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
632 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 633 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 634 | |
c405c629 JB |
635 | switch (sdata->vif.type) { |
636 | case NL80211_IFTYPE_STATION: | |
637 | case NL80211_IFTYPE_ADHOC: | |
638 | case NL80211_IFTYPE_AP: | |
639 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 640 | netif_carrier_off(dev); |
c405c629 | 641 | break; |
1411af15 | 642 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 643 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 644 | break; |
c405c629 | 645 | default: |
0d143fe1 | 646 | netif_carrier_on(dev); |
c405c629 | 647 | } |
59034591 EP |
648 | |
649 | /* | |
650 | * set default queue parameters so drivers don't | |
651 | * need to initialise the hardware if the hardware | |
652 | * doesn't start up with sane defaults | |
653 | */ | |
3abead59 | 654 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
655 | } |
656 | ||
2d2080c3 JB |
657 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
658 | ||
0d143fe1 JB |
659 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
660 | /* Create STA entry for the WDS peer */ | |
661 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
662 | GFP_KERNEL); | |
663 | if (!sta) { | |
664 | res = -ENOMEM; | |
665 | goto err_del_interface; | |
666 | } | |
667 | ||
83d5cc01 JB |
668 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
669 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
670 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
671 | |
672 | res = sta_info_insert(sta); | |
673 | if (res) { | |
674 | /* STA has been freed */ | |
675 | goto err_del_interface; | |
676 | } | |
1be7fe8d BJ |
677 | |
678 | rate_control_rate_init(sta); | |
1411af15 | 679 | netif_carrier_on(dev); |
f142c6b9 JB |
680 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
681 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
682 | } |
683 | ||
0d143fe1 JB |
684 | /* |
685 | * set_multicast_list will be invoked by the networking core | |
686 | * which will check whether any increments here were done in | |
687 | * error and sync them down to the hardware as filter flags. | |
688 | */ | |
689 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
690 | atomic_inc(&local->iff_allmultis); | |
691 | ||
692 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
693 | atomic_inc(&local->iff_promiscs); | |
694 | ||
7da7cc1d | 695 | mutex_lock(&local->mtx); |
5cff20e6 | 696 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 697 | mutex_unlock(&local->mtx); |
5cff20e6 | 698 | |
34d4bc4d JB |
699 | if (coming_up) |
700 | local->open_count++; | |
701 | ||
59034591 | 702 | if (hw_reconf_flags) |
e8975581 | 703 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 704 | |
10f644a4 | 705 | ieee80211_recalc_ps(local, -1); |
965bedad | 706 | |
f142c6b9 JB |
707 | if (dev) |
708 | netif_tx_start_all_queues(dev); | |
0d143fe1 JB |
709 | |
710 | return 0; | |
711 | err_del_interface: | |
7b7eab6f | 712 | drv_remove_interface(local, sdata); |
0d143fe1 | 713 | err_stop: |
24487981 JB |
714 | if (!local->open_count) |
715 | drv_stop(local); | |
0d143fe1 JB |
716 | err_del_bss: |
717 | sdata->bss = NULL; | |
718 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
719 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 720 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 721 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
722 | return res; |
723 | } | |
724 | ||
34d4bc4d | 725 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
726 | { |
727 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
728 | int err; |
729 | ||
730 | /* fail early if user set an invalid address */ | |
2fcf2824 | 731 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
732 | return -EADDRNOTAVAIL; |
733 | ||
734 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
735 | if (err) | |
736 | return err; | |
737 | ||
f142c6b9 | 738 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
739 | } |
740 | ||
741 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
742 | bool going_down) | |
743 | { | |
0d143fe1 | 744 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
745 | unsigned long flags; |
746 | struct sk_buff *skb, *tmp; | |
e8975581 | 747 | u32 hw_reconf_flags = 0; |
09f4114e | 748 | int i, flushed; |
0d143fe1 | 749 | |
c29acf20 RM |
750 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
751 | ||
e2fd5dbc | 752 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
753 | ieee80211_scan_cancel(local); |
754 | ||
0d143fe1 JB |
755 | /* |
756 | * Stop TX on this interface first. | |
757 | */ | |
f142c6b9 JB |
758 | if (sdata->dev) |
759 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 760 | |
2eb278e0 | 761 | ieee80211_roc_purge(sdata); |
af6b6374 | 762 | |
0d143fe1 JB |
763 | /* |
764 | * Remove all stations associated with this interface. | |
765 | * | |
766 | * This must be done before calling ops->remove_interface() | |
767 | * because otherwise we can later invoke ops->sta_notify() | |
768 | * whenever the STAs are removed, and that invalidates driver | |
769 | * assumptions about always getting a vif pointer that is valid | |
770 | * (because if we remove a STA after ops->remove_interface() | |
771 | * the driver will have removed the vif info already!) | |
772 | * | |
09f4114e JB |
773 | * This is relevant only in WDS mode, in all other modes we've |
774 | * already removed all stations when disconnecting or similar, | |
775 | * so warn otherwise. | |
051007d9 JB |
776 | * |
777 | * We call sta_info_flush_cleanup() later, to combine RCU waits. | |
0d143fe1 | 778 | */ |
051007d9 | 779 | flushed = sta_info_flush_defer(sdata); |
09f4114e JB |
780 | WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
781 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); | |
0d143fe1 JB |
782 | |
783 | /* | |
784 | * Don't count this interface for promisc/allmulti while it | |
785 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
786 | * on the master interface which will sync these down to the | |
787 | * hardware as filter flags. | |
788 | */ | |
789 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
790 | atomic_dec(&local->iff_allmultis); | |
791 | ||
792 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
793 | atomic_dec(&local->iff_promiscs); | |
794 | ||
7be5086d | 795 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 796 | local->fif_pspoll--; |
7be5086d JB |
797 | local->fif_probe_req--; |
798 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
799 | local->fif_probe_req--; | |
800 | } | |
e3b90ca2 | 801 | |
f142c6b9 JB |
802 | if (sdata->dev) { |
803 | netif_addr_lock_bh(sdata->dev); | |
804 | spin_lock_bh(&local->filter_lock); | |
805 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
806 | sdata->dev->addr_len); | |
807 | spin_unlock_bh(&local->filter_lock); | |
808 | netif_addr_unlock_bh(sdata->dev); | |
3b8d81e0 | 809 | |
f142c6b9 JB |
810 | ieee80211_configure_filter(local); |
811 | } | |
3ac64bee | 812 | |
7cbf0ba5 VN |
813 | del_timer_sync(&local->dynamic_ps_timer); |
814 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 815 | |
04ecd257 JB |
816 | cancel_work_sync(&sdata->recalc_smps); |
817 | ||
0d143fe1 JB |
818 | /* APs need special treatment */ |
819 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 820 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
821 | |
822 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 823 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
824 | u.vlan.list) |
825 | dev_close(vlan->dev); | |
826 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
afa762f6 EP |
827 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
828 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
829 | } |
830 | ||
34d4bc4d JB |
831 | if (going_down) |
832 | local->open_count--; | |
0d143fe1 JB |
833 | |
834 | switch (sdata->vif.type) { | |
835 | case NL80211_IFTYPE_AP_VLAN: | |
836 | list_del(&sdata->u.vlan.list); | |
4d76d21b | 837 | rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); |
0d143fe1 JB |
838 | /* no need to tell driver */ |
839 | break; | |
840 | case NL80211_IFTYPE_MONITOR: | |
841 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
842 | local->cooked_mntrs--; | |
843 | break; | |
844 | } | |
845 | ||
846 | local->monitors--; | |
e8975581 | 847 | if (local->monitors == 0) { |
0869aea0 JB |
848 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
849 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 850 | ieee80211_del_virtual_monitor(local); |
e8975581 | 851 | } |
0d143fe1 | 852 | |
85416a4f | 853 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 854 | ieee80211_configure_filter(local); |
0d143fe1 | 855 | break; |
f142c6b9 JB |
856 | case NL80211_IFTYPE_P2P_DEVICE: |
857 | /* relies on synchronize_rcu() below */ | |
858 | rcu_assign_pointer(local->p2p_sdata, NULL); | |
859 | /* fall through */ | |
0d143fe1 | 860 | default: |
0b7dff4f | 861 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
862 | /* |
863 | * When we get here, the interface is marked down. | |
75de9113 JB |
864 | * |
865 | * sta_info_flush_cleanup() requires rcu_barrier() | |
866 | * first to wait for the station call_rcu() calls | |
867 | * to complete, here we need at least sychronize_rcu() | |
868 | * it to wait for the RX path in case it is using the | |
869 | * interface and enqueuing frames at this very time on | |
870 | * another CPU. | |
35f20c14 | 871 | */ |
75de9113 | 872 | rcu_barrier(); |
051007d9 JB |
873 | sta_info_flush_cleanup(sdata); |
874 | ||
35f20c14 JB |
875 | skb_queue_purge(&sdata->skb_queue); |
876 | ||
b9dcf712 JB |
877 | /* |
878 | * Free all remaining keys, there shouldn't be any, | |
879 | * except maybe group keys in AP more or WDS? | |
880 | */ | |
ad0e2b5a | 881 | ieee80211_free_keys(sdata); |
b9dcf712 | 882 | |
b207cdb0 AB |
883 | drv_remove_interface_debugfs(local, sdata); |
884 | ||
34d4bc4d | 885 | if (going_down) |
7b7eab6f | 886 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
887 | } |
888 | ||
889 | sdata->bss = NULL; | |
890 | ||
7da7cc1d | 891 | mutex_lock(&local->mtx); |
5cff20e6 | 892 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 893 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
894 | |
895 | ieee80211_recalc_ps(local, -1); | |
896 | ||
0d143fe1 | 897 | if (local->open_count == 0) { |
4e6cbfd0 JL |
898 | if (local->ops->napi_poll) |
899 | napi_disable(&local->napi); | |
ea77f12f | 900 | ieee80211_clear_tx_pending(local); |
84f6a01c | 901 | ieee80211_stop_device(local); |
0d143fe1 | 902 | |
e8975581 JB |
903 | /* no reconfiguring after stop! */ |
904 | hw_reconf_flags = 0; | |
0d143fe1 JB |
905 | } |
906 | ||
e8975581 | 907 | /* do after stop to avoid reconfiguring when we stop anyway */ |
55de908a | 908 | if (hw_reconf_flags) |
e8975581 JB |
909 | ieee80211_hw_config(local, hw_reconf_flags); |
910 | ||
5061b0c2 JB |
911 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
912 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
913 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
914 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
915 | if (info->control.vif == &sdata->vif) { | |
916 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 917 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
918 | } |
919 | } | |
920 | } | |
921 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
922 | |
923 | if (local->monitors == local->open_count && local->monitors > 0) | |
924 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
925 | } |
926 | ||
927 | static int ieee80211_stop(struct net_device *dev) | |
928 | { | |
929 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
930 | ||
931 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 932 | |
0d143fe1 JB |
933 | return 0; |
934 | } | |
935 | ||
936 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
937 | { | |
0d143fe1 | 938 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 939 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
940 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
941 | ||
942 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
943 | promisc = !!(dev->flags & IFF_PROMISC); | |
944 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
945 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
946 | ||
947 | if (allmulti != sdata_allmulti) { | |
948 | if (dev->flags & IFF_ALLMULTI) | |
949 | atomic_inc(&local->iff_allmultis); | |
950 | else | |
951 | atomic_dec(&local->iff_allmultis); | |
952 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
953 | } | |
954 | ||
955 | if (promisc != sdata_promisc) { | |
956 | if (dev->flags & IFF_PROMISC) | |
957 | atomic_inc(&local->iff_promiscs); | |
958 | else | |
959 | atomic_dec(&local->iff_promiscs); | |
960 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
961 | } | |
3b8d81e0 | 962 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 963 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 964 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 965 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
966 | } |
967 | ||
75636525 JB |
968 | /* |
969 | * Called when the netdev is removed or, by the code below, before | |
970 | * the interface type changes. | |
971 | */ | |
f142c6b9 | 972 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 973 | { |
75636525 | 974 | int flushed; |
f0706e82 JB |
975 | int i; |
976 | ||
75636525 JB |
977 | /* free extra data */ |
978 | ieee80211_free_keys(sdata); | |
979 | ||
aee14ceb JM |
980 | ieee80211_debugfs_remove_netdev(sdata); |
981 | ||
f0706e82 | 982 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
983 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
984 | sdata->fragment_next = 0; | |
11a843b7 | 985 | |
b9dcf712 JB |
986 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
987 | mesh_rmc_free(sdata); | |
75636525 | 988 | |
b998e8bb | 989 | flushed = sta_info_flush(sdata); |
75636525 | 990 | WARN_ON(flushed); |
f0706e82 JB |
991 | } |
992 | ||
f142c6b9 JB |
993 | static void ieee80211_uninit(struct net_device *dev) |
994 | { | |
995 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
996 | } | |
997 | ||
cf0277e7 JB |
998 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
999 | struct sk_buff *skb) | |
1000 | { | |
1001 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
1002 | } | |
1003 | ||
587e729e JB |
1004 | static const struct net_device_ops ieee80211_dataif_ops = { |
1005 | .ndo_open = ieee80211_open, | |
1006 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1007 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1008 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 1009 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 1010 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 1011 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 1012 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
1013 | }; |
1014 | ||
cf0277e7 JB |
1015 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
1016 | struct sk_buff *skb) | |
1017 | { | |
1018 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1019 | struct ieee80211_local *local = sdata->local; | |
1020 | struct ieee80211_hdr *hdr; | |
1021 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
1022 | ||
32c5057b | 1023 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
1024 | return 0; |
1025 | ||
1026 | if (skb->len < 4 || | |
b49bb574 | 1027 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
1028 | return 0; /* doesn't matter, frame will be dropped */ |
1029 | ||
b49bb574 | 1030 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 1031 | |
00e96dec | 1032 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
1033 | } |
1034 | ||
587e729e JB |
1035 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1036 | .ndo_open = ieee80211_open, | |
1037 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1038 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1039 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1040 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
1041 | .ndo_change_mtu = ieee80211_change_mtu, |
1042 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 1043 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
1044 | }; |
1045 | ||
1046 | static void ieee80211_if_setup(struct net_device *dev) | |
1047 | { | |
1048 | ether_setup(dev); | |
550fd08c | 1049 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1050 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
1051 | dev->destructor = free_netdev; |
1052 | } | |
1053 | ||
1fa57d01 JB |
1054 | static void ieee80211_iface_work(struct work_struct *work) |
1055 | { | |
1056 | struct ieee80211_sub_if_data *sdata = | |
1057 | container_of(work, struct ieee80211_sub_if_data, work); | |
1058 | struct ieee80211_local *local = sdata->local; | |
1059 | struct sk_buff *skb; | |
344eec67 | 1060 | struct sta_info *sta; |
c1475ca9 | 1061 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
1062 | |
1063 | if (!ieee80211_sdata_running(sdata)) | |
1064 | return; | |
1065 | ||
1066 | if (local->scanning) | |
1067 | return; | |
1068 | ||
1069 | /* | |
1070 | * ieee80211_queue_work() should have picked up most cases, | |
1071 | * here we'll pick the rest. | |
1072 | */ | |
1073 | if (WARN(local->suspended, | |
1074 | "interface work scheduled while going to suspend\n")) | |
1075 | return; | |
1076 | ||
1077 | /* first process frames */ | |
1078 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1079 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1080 | ||
c1475ca9 JB |
1081 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1082 | ra_tid = (void *)&skb->cb; | |
1083 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1084 | ra_tid->tid); | |
1085 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1086 | ra_tid = (void *)&skb->cb; | |
1087 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1088 | ra_tid->tid); | |
1089 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1090 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1091 | int len = skb->len; |
bed7ee6e | 1092 | |
a93e3644 | 1093 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1094 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1095 | if (sta) { |
1096 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1097 | case WLAN_ACTION_ADDBA_REQ: | |
1098 | ieee80211_process_addba_request( | |
1099 | local, sta, mgmt, len); | |
1100 | break; | |
1101 | case WLAN_ACTION_ADDBA_RESP: | |
1102 | ieee80211_process_addba_resp(local, sta, | |
1103 | mgmt, len); | |
1104 | break; | |
1105 | case WLAN_ACTION_DELBA: | |
1106 | ieee80211_process_delba(sdata, sta, | |
1107 | mgmt, len); | |
1108 | break; | |
1109 | default: | |
1110 | WARN_ON(1); | |
1111 | break; | |
1112 | } | |
1113 | } | |
a93e3644 | 1114 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1115 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1116 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1117 | /* | |
1118 | * So the frame isn't mgmt, but frame_control | |
1119 | * is at the right place anyway, of course, so | |
1120 | * the if statement is correct. | |
1121 | * | |
1122 | * Warn if we have other data frame types here, | |
1123 | * they must not get here. | |
1124 | */ | |
1125 | WARN_ON(hdr->frame_control & | |
1126 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1127 | WARN_ON(!(hdr->seq_ctrl & | |
1128 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1129 | /* | |
1130 | * This was a fragment of a frame, received while | |
1131 | * a block-ack session was active. That cannot be | |
1132 | * right, so terminate the session. | |
1133 | */ | |
a93e3644 | 1134 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1135 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1136 | if (sta) { |
1137 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1138 | IEEE80211_QOS_CTL_TID_MASK; | |
1139 | ||
1140 | __ieee80211_stop_rx_ba_session( | |
1141 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1142 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1143 | true); | |
344eec67 | 1144 | } |
a93e3644 | 1145 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1146 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1147 | case NL80211_IFTYPE_STATION: |
1148 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1149 | break; | |
1150 | case NL80211_IFTYPE_ADHOC: | |
1151 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1152 | break; | |
1153 | case NL80211_IFTYPE_MESH_POINT: | |
1154 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1155 | break; | |
1156 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1157 | break; | |
1158 | default: | |
1159 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1160 | break; |
1161 | } | |
36b3a628 JB |
1162 | |
1163 | kfree_skb(skb); | |
1fa57d01 JB |
1164 | } |
1165 | ||
1166 | /* then other type-dependent work */ | |
1167 | switch (sdata->vif.type) { | |
1168 | case NL80211_IFTYPE_STATION: | |
1169 | ieee80211_sta_work(sdata); | |
1170 | break; | |
1171 | case NL80211_IFTYPE_ADHOC: | |
1172 | ieee80211_ibss_work(sdata); | |
1173 | break; | |
1174 | case NL80211_IFTYPE_MESH_POINT: | |
1175 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1176 | break; | |
1177 | ieee80211_mesh_work(sdata); | |
1178 | break; | |
1179 | default: | |
1180 | break; | |
1181 | } | |
1182 | } | |
1183 | ||
04ecd257 JB |
1184 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1185 | { | |
1186 | struct ieee80211_sub_if_data *sdata = | |
1187 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1188 | ||
1189 | ieee80211_recalc_smps(sdata); | |
1190 | } | |
1fa57d01 | 1191 | |
75636525 JB |
1192 | /* |
1193 | * Helper function to initialise an interface to a specific type. | |
1194 | */ | |
1195 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1196 | enum nl80211_iftype type) |
f0706e82 | 1197 | { |
75636525 JB |
1198 | /* clear type-dependent union */ |
1199 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1200 | ||
1201 | /* and set some type-dependent values */ | |
1202 | sdata->vif.type = type; | |
2ca27bcf | 1203 | sdata->vif.p2p = false; |
60719ffd | 1204 | sdata->wdev.iftype = type; |
75636525 | 1205 | |
a621fa4d JB |
1206 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1207 | sdata->control_port_no_encrypt = false; | |
1208 | ||
b53be792 SW |
1209 | sdata->noack_map = 0; |
1210 | ||
f142c6b9 JB |
1211 | /* only monitor/p2p-device differ */ |
1212 | if (sdata->dev) { | |
1213 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1214 | sdata->dev->type = ARPHRD_ETHER; | |
1215 | } | |
75636525 | 1216 | |
35f20c14 | 1217 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1218 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1219 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
35f20c14 | 1220 | |
75636525 | 1221 | switch (type) { |
2ca27bcf JB |
1222 | case NL80211_IFTYPE_P2P_GO: |
1223 | type = NL80211_IFTYPE_AP; | |
1224 | sdata->vif.type = type; | |
1225 | sdata->vif.p2p = true; | |
1226 | /* fall through */ | |
05c914fe | 1227 | case NL80211_IFTYPE_AP: |
d012a605 | 1228 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1229 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
ad2d223a | 1230 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
75636525 | 1231 | break; |
2ca27bcf JB |
1232 | case NL80211_IFTYPE_P2P_CLIENT: |
1233 | type = NL80211_IFTYPE_STATION; | |
1234 | sdata->vif.type = type; | |
1235 | sdata->vif.p2p = true; | |
1236 | /* fall through */ | |
05c914fe | 1237 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1238 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1239 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1240 | break; |
46900298 | 1241 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1242 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1243 | ieee80211_ibss_setup_sdata(sdata); |
1244 | break; | |
05c914fe | 1245 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1246 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1247 | ieee80211_mesh_init_sdata(sdata); | |
1248 | break; | |
05c914fe | 1249 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1250 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1251 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1252 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1253 | MONITOR_FLAG_OTHER_BSS; | |
1254 | break; | |
05c914fe | 1255 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1256 | sdata->vif.bss_conf.bssid = NULL; |
1257 | break; | |
05c914fe | 1258 | case NL80211_IFTYPE_AP_VLAN: |
ad2d223a | 1259 | break; |
98104fde | 1260 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1261 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1262 | break; |
05c914fe | 1263 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1264 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1265 | BUG(); |
1266 | break; | |
1267 | } | |
1268 | ||
1269 | ieee80211_debugfs_add_netdev(sdata); | |
1270 | } | |
1271 | ||
34d4bc4d JB |
1272 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1273 | enum nl80211_iftype type) | |
1274 | { | |
1275 | struct ieee80211_local *local = sdata->local; | |
1276 | int ret, err; | |
2ca27bcf JB |
1277 | enum nl80211_iftype internal_type = type; |
1278 | bool p2p = false; | |
34d4bc4d JB |
1279 | |
1280 | ASSERT_RTNL(); | |
1281 | ||
1282 | if (!local->ops->change_interface) | |
1283 | return -EBUSY; | |
1284 | ||
1285 | switch (sdata->vif.type) { | |
1286 | case NL80211_IFTYPE_AP: | |
1287 | case NL80211_IFTYPE_STATION: | |
1288 | case NL80211_IFTYPE_ADHOC: | |
1289 | /* | |
1290 | * Could maybe also all others here? | |
1291 | * Just not sure how that interacts | |
1292 | * with the RX/config path e.g. for | |
1293 | * mesh. | |
1294 | */ | |
1295 | break; | |
1296 | default: | |
1297 | return -EBUSY; | |
1298 | } | |
1299 | ||
1300 | switch (type) { | |
1301 | case NL80211_IFTYPE_AP: | |
1302 | case NL80211_IFTYPE_STATION: | |
1303 | case NL80211_IFTYPE_ADHOC: | |
1304 | /* | |
1305 | * Could probably support everything | |
1306 | * but WDS here (WDS do_open can fail | |
1307 | * under memory pressure, which this | |
1308 | * code isn't prepared to handle). | |
1309 | */ | |
1310 | break; | |
2ca27bcf JB |
1311 | case NL80211_IFTYPE_P2P_CLIENT: |
1312 | p2p = true; | |
1313 | internal_type = NL80211_IFTYPE_STATION; | |
1314 | break; | |
1315 | case NL80211_IFTYPE_P2P_GO: | |
1316 | p2p = true; | |
1317 | internal_type = NL80211_IFTYPE_AP; | |
1318 | break; | |
34d4bc4d JB |
1319 | default: |
1320 | return -EBUSY; | |
1321 | } | |
1322 | ||
2ca27bcf | 1323 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1324 | if (ret) |
1325 | return ret; | |
1326 | ||
1327 | ieee80211_do_stop(sdata, false); | |
1328 | ||
f142c6b9 | 1329 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1330 | |
2ca27bcf | 1331 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1332 | if (ret) |
1333 | type = sdata->vif.type; | |
1334 | ||
3a25a8c8 JB |
1335 | /* |
1336 | * Ignore return value here, there's not much we can do since | |
1337 | * the driver changed the interface type internally already. | |
1338 | * The warnings will hopefully make driver authors fix it :-) | |
1339 | */ | |
1340 | ieee80211_check_queues(sdata); | |
1341 | ||
34d4bc4d JB |
1342 | ieee80211_setup_sdata(sdata, type); |
1343 | ||
f142c6b9 | 1344 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1345 | WARN(err, "type change: do_open returned %d", err); |
1346 | ||
1347 | return ret; | |
1348 | } | |
1349 | ||
f3947e2d | 1350 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1351 | enum nl80211_iftype type) |
75636525 | 1352 | { |
34d4bc4d JB |
1353 | int ret; |
1354 | ||
f3947e2d JB |
1355 | ASSERT_RTNL(); |
1356 | ||
2ca27bcf | 1357 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1358 | return 0; |
1359 | ||
34d4bc4d JB |
1360 | if (ieee80211_sdata_running(sdata)) { |
1361 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1362 | if (ret) | |
1363 | return ret; | |
1364 | } else { | |
1365 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1366 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1367 | ieee80211_setup_sdata(sdata, type); |
1368 | } | |
75636525 JB |
1369 | |
1370 | /* reset some values that shouldn't be kept across type changes */ | |
75636525 | 1371 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1372 | if (type == NL80211_IFTYPE_STATION) |
1373 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1374 | |
1375 | return 0; | |
f0706e82 JB |
1376 | } |
1377 | ||
fa9029f8 | 1378 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1379 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1380 | { |
1381 | struct ieee80211_sub_if_data *sdata; | |
1382 | u64 mask, start, addr, val, inc; | |
1383 | u8 *m; | |
1384 | u8 tmp_addr[ETH_ALEN]; | |
1385 | int i; | |
1386 | ||
1387 | /* default ... something at least */ | |
f142c6b9 | 1388 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1389 | |
1390 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1391 | local->hw.wiphy->n_addresses <= 1) | |
1392 | return; | |
1393 | ||
fa9029f8 JB |
1394 | mutex_lock(&local->iflist_mtx); |
1395 | ||
1396 | switch (type) { | |
1397 | case NL80211_IFTYPE_MONITOR: | |
1398 | /* doesn't matter */ | |
1399 | break; | |
1400 | case NL80211_IFTYPE_WDS: | |
1401 | case NL80211_IFTYPE_AP_VLAN: | |
1402 | /* match up with an AP interface */ | |
1403 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1404 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1405 | continue; | |
f142c6b9 | 1406 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1407 | break; |
1408 | } | |
1409 | /* keep default if no AP interface present */ | |
1410 | break; | |
6d71117a JB |
1411 | case NL80211_IFTYPE_P2P_CLIENT: |
1412 | case NL80211_IFTYPE_P2P_GO: | |
1413 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1414 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1415 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1416 | continue; | |
1417 | if (!ieee80211_sdata_running(sdata)) | |
1418 | continue; | |
1419 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1420 | goto out_unlock; | |
1421 | } | |
1422 | } | |
1423 | /* otherwise fall through */ | |
fa9029f8 JB |
1424 | default: |
1425 | /* assign a new address if possible -- try n_addresses first */ | |
1426 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1427 | bool used = false; | |
1428 | ||
1429 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1430 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1431 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1432 | used = true; | |
1433 | break; | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | if (!used) { | |
f142c6b9 | 1438 | memcpy(perm_addr, |
fa9029f8 JB |
1439 | local->hw.wiphy->addresses[i].addr, |
1440 | ETH_ALEN); | |
1441 | break; | |
1442 | } | |
1443 | } | |
1444 | ||
1445 | /* try mask if available */ | |
1446 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1447 | break; | |
1448 | ||
1449 | m = local->hw.wiphy->addr_mask; | |
1450 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1451 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1452 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1453 | ||
1454 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1455 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1456 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1457 | break; |
1458 | } | |
1459 | ||
1460 | m = local->hw.wiphy->perm_addr; | |
1461 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1462 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1463 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1464 | ||
1465 | inc = 1ULL<<__ffs64(mask); | |
1466 | val = (start & mask); | |
1467 | addr = (start & ~mask) | (val & mask); | |
1468 | do { | |
1469 | bool used = false; | |
1470 | ||
1471 | tmp_addr[5] = addr >> 0*8; | |
1472 | tmp_addr[4] = addr >> 1*8; | |
1473 | tmp_addr[3] = addr >> 2*8; | |
1474 | tmp_addr[2] = addr >> 3*8; | |
1475 | tmp_addr[1] = addr >> 4*8; | |
1476 | tmp_addr[0] = addr >> 5*8; | |
1477 | ||
1478 | val += inc; | |
1479 | ||
1480 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1481 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1482 | ETH_ALEN) == 0) { | |
1483 | used = true; | |
1484 | break; | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | if (!used) { | |
f142c6b9 | 1489 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1490 | break; |
1491 | } | |
1492 | addr = (start & ~mask) | (val & mask); | |
1493 | } while (addr != start); | |
1494 | ||
1495 | break; | |
1496 | } | |
1497 | ||
6d71117a | 1498 | out_unlock: |
fa9029f8 JB |
1499 | mutex_unlock(&local->iflist_mtx); |
1500 | } | |
1501 | ||
97f97b1f JB |
1502 | static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) |
1503 | { | |
1504 | struct ieee80211_sub_if_data *sdata; | |
1505 | ||
1506 | sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); | |
1507 | ||
1508 | ieee80211_cleanup_sdata_stas(sdata); | |
1509 | } | |
1510 | ||
3e122be0 | 1511 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1512 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1513 | struct vif_params *params) |
f0706e82 | 1514 | { |
f142c6b9 | 1515 | struct net_device *ndev = NULL; |
f0706e82 | 1516 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1517 | int ret, i; |
ded81f6b | 1518 | int txqs = 1; |
f0706e82 JB |
1519 | |
1520 | ASSERT_RTNL(); | |
75636525 | 1521 | |
f142c6b9 JB |
1522 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1523 | struct wireless_dev *wdev; | |
1524 | ||
1525 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1526 | GFP_KERNEL); | |
1527 | if (!sdata) | |
1528 | return -ENOMEM; | |
1529 | wdev = &sdata->wdev; | |
1530 | ||
1531 | sdata->dev = NULL; | |
1532 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1533 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1534 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1535 | } else { | |
1536 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1537 | txqs = IEEE80211_NUM_ACS; | |
1538 | ||
1539 | ndev = alloc_netdev_mqs(sizeof(*sdata) + | |
1540 | local->hw.vif_data_size, | |
1541 | name, ieee80211_if_setup, txqs, 1); | |
1542 | if (!ndev) | |
1543 | return -ENOMEM; | |
1544 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1545 | ||
1546 | ndev->needed_headroom = local->tx_headroom + | |
1547 | 4*6 /* four MAC addresses */ | |
1548 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1549 | + 6 /* mesh */ | |
1550 | + 8 /* rfc1042/bridge tunnel */ | |
1551 | - ETH_HLEN /* ethernet hard_header_len */ | |
1552 | + IEEE80211_ENCRYPT_HEADROOM; | |
1553 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1554 | ||
1555 | ret = dev_alloc_name(ndev, ndev->name); | |
1556 | if (ret < 0) { | |
1557 | free_netdev(ndev); | |
1558 | return ret; | |
1559 | } | |
1560 | ||
1561 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
1562 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
1563 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); | |
1564 | ||
1565 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1566 | sdata = netdev_priv(ndev); | |
1567 | ndev->ieee80211_ptr = &sdata->wdev; | |
1568 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1569 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1570 | ||
1571 | sdata->dev = ndev; | |
1572 | } | |
75636525 JB |
1573 | |
1574 | /* initialise type-independent data */ | |
f0706e82 | 1575 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1576 | sdata->local = local; |
75636525 JB |
1577 | |
1578 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1579 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1580 | ||
1581 | INIT_LIST_HEAD(&sdata->key_list); | |
1582 | ||
97f97b1f JB |
1583 | spin_lock_init(&sdata->cleanup_stations_lock); |
1584 | INIT_LIST_HEAD(&sdata->cleanup_stations); | |
1585 | INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); | |
1586 | ||
37eb0b16 JM |
1587 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1588 | struct ieee80211_supported_band *sband; | |
1589 | sband = local->hw.wiphy->bands[i]; | |
1590 | sdata->rc_rateidx_mask[i] = | |
1591 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1592 | if (sband) |
1593 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1594 | sband->ht_cap.mcs.rx_mask, | |
1595 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1596 | else | |
1597 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1598 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1599 | } |
75636525 | 1600 | |
3a25a8c8 JB |
1601 | ieee80211_set_default_queues(sdata); |
1602 | ||
1ea6f9c0 JB |
1603 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1604 | sdata->user_power_level = local->user_power_level; | |
1605 | ||
75636525 JB |
1606 | /* setup type-dependent data */ |
1607 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1608 | |
f142c6b9 JB |
1609 | if (ndev) { |
1610 | if (params) { | |
1611 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1612 | if (type == NL80211_IFTYPE_STATION) | |
1613 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1614 | } | |
9bc383de | 1615 | |
f142c6b9 | 1616 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1617 | |
f142c6b9 JB |
1618 | ret = register_netdevice(ndev); |
1619 | if (ret) { | |
1620 | free_netdev(ndev); | |
1621 | return ret; | |
1622 | } | |
1623 | } | |
f0706e82 | 1624 | |
c771c9d8 | 1625 | mutex_lock(&local->iflist_mtx); |
79010420 | 1626 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1627 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1628 | |
84efbb84 JB |
1629 | if (new_wdev) |
1630 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1631 | |
f0706e82 | 1632 | return 0; |
f0706e82 JB |
1633 | } |
1634 | ||
f698d856 | 1635 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1636 | { |
f0706e82 | 1637 | ASSERT_RTNL(); |
11a843b7 | 1638 | |
c771c9d8 | 1639 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1640 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1641 | mutex_unlock(&sdata->local->iflist_mtx); |
1642 | ||
75636525 | 1643 | synchronize_rcu(); |
f142c6b9 JB |
1644 | |
1645 | if (sdata->dev) { | |
1646 | unregister_netdevice(sdata->dev); | |
1647 | } else { | |
1648 | cfg80211_unregister_wdev(&sdata->wdev); | |
1649 | kfree(sdata); | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1654 | { | |
1655 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1656 | return; | |
1657 | ieee80211_do_stop(sdata, true); | |
1658 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1659 | } |
1660 | ||
75636525 JB |
1661 | /* |
1662 | * Remove all interfaces, may only be called at hardware unregistration | |
1663 | * time because it doesn't do RCU-safe list removals. | |
1664 | */ | |
1665 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1666 | { |
75636525 | 1667 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1668 | LIST_HEAD(unreg_list); |
f142c6b9 | 1669 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1670 | |
1671 | ASSERT_RTNL(); | |
1672 | ||
efe117ab | 1673 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1674 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1675 | list_del(&sdata->list); | |
c771c9d8 | 1676 | |
f142c6b9 JB |
1677 | if (sdata->dev) |
1678 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1679 | else | |
1680 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1681 | } |
efe117ab ED |
1682 | mutex_unlock(&local->iflist_mtx); |
1683 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1684 | list_del(&unreg_list); |
f142c6b9 JB |
1685 | |
1686 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1687 | list_del(&sdata->list); | |
1688 | cfg80211_unregister_wdev(&sdata->wdev); | |
1689 | kfree(sdata); | |
1690 | } | |
f0706e82 | 1691 | } |
5cff20e6 | 1692 | |
47846c9b JB |
1693 | static int netdev_notify(struct notifier_block *nb, |
1694 | unsigned long state, | |
1695 | void *ndev) | |
1696 | { | |
1697 | struct net_device *dev = ndev; | |
1698 | struct ieee80211_sub_if_data *sdata; | |
1699 | ||
1700 | if (state != NETDEV_CHANGENAME) | |
1701 | return 0; | |
1702 | ||
1703 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1704 | return 0; | |
1705 | ||
1706 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1707 | return 0; | |
1708 | ||
1709 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1710 | ||
2f5265e6 | 1711 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1712 | |
1713 | ieee80211_debugfs_rename_netdev(sdata); | |
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | static struct notifier_block mac80211_netdev_notifier = { | |
1718 | .notifier_call = netdev_notify, | |
1719 | }; | |
1720 | ||
1721 | int ieee80211_iface_init(void) | |
1722 | { | |
1723 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1724 | } | |
1725 | ||
1726 | void ieee80211_iface_exit(void) | |
1727 | { | |
1728 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1729 | } |