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Commit | Line | Data |
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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 | |
fd0f979a | 81 | static u32 ieee80211_idle_off(struct ieee80211_local *local) |
cc45ae54 JB |
82 | { |
83 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
84 | return 0; | |
85 | ||
86 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
87 | return IEEE80211_CONF_CHANGE_IDLE; | |
88 | } | |
89 | ||
90 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
91 | { | |
92 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
93 | return 0; | |
94 | ||
95 | drv_flush(local, false); | |
96 | ||
97 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
98 | return IEEE80211_CONF_CHANGE_IDLE; | |
99 | } | |
100 | ||
fd0f979a | 101 | void ieee80211_recalc_idle(struct ieee80211_local *local) |
cc45ae54 | 102 | { |
fd0f979a | 103 | bool working = false, scanning, active; |
cc45ae54 JB |
104 | unsigned int led_trig_start = 0, led_trig_stop = 0; |
105 | struct ieee80211_roc_work *roc; | |
fd0f979a | 106 | u32 change; |
cc45ae54 | 107 | |
cc45ae54 JB |
108 | lockdep_assert_held(&local->mtx); |
109 | ||
b759f4dd | 110 | active = !list_empty(&local->chanctx_list) || local->monitors; |
cc45ae54 JB |
111 | |
112 | if (!local->ops->remain_on_channel) { | |
113 | list_for_each_entry(roc, &local->roc_list, list) { | |
114 | working = true; | |
fd0f979a | 115 | break; |
cc45ae54 JB |
116 | } |
117 | } | |
118 | ||
f1e3e051 JB |
119 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
120 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning); | |
cc45ae54 | 121 | |
cc45ae54 JB |
122 | if (working || scanning) |
123 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
124 | else | |
125 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
126 | ||
fd0f979a | 127 | if (active) |
cc45ae54 JB |
128 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; |
129 | else | |
130 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
131 | ||
132 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
133 | ||
fd0f979a JB |
134 | if (working || scanning || active) |
135 | change = ieee80211_idle_off(local); | |
cc45ae54 | 136 | else |
fd0f979a JB |
137 | change = ieee80211_idle_on(local); |
138 | if (change) | |
139 | ieee80211_hw_config(local, change); | |
cc45ae54 JB |
140 | } |
141 | ||
0d143fe1 JB |
142 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
143 | { | |
09b1426e | 144 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) |
0d143fe1 | 145 | return -EINVAL; |
0d143fe1 | 146 | |
0d143fe1 JB |
147 | dev->mtu = new_mtu; |
148 | return 0; | |
149 | } | |
150 | ||
478622e8 HS |
151 | static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr) |
152 | { | |
153 | struct ieee80211_sub_if_data *sdata; | |
154 | u64 new, mask, tmp; | |
155 | u8 *m; | |
156 | int ret = 0; | |
157 | ||
158 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
159 | return 0; | |
160 | ||
161 | m = addr; | |
162 | new = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
163 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
164 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
165 | ||
166 | m = local->hw.wiphy->addr_mask; | |
167 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
168 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
169 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
170 | ||
171 | ||
172 | mutex_lock(&local->iflist_mtx); | |
173 | list_for_each_entry(sdata, &local->interfaces, list) { | |
174 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) | |
175 | continue; | |
176 | ||
177 | m = sdata->vif.addr; | |
178 | tmp = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
179 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
180 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
181 | ||
182 | if ((new & ~mask) != (tmp & ~mask)) { | |
183 | ret = -EINVAL; | |
184 | break; | |
185 | } | |
186 | } | |
187 | mutex_unlock(&local->iflist_mtx); | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
47846c9b JB |
192 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
193 | { | |
194 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 195 | struct sockaddr *sa = addr; |
47846c9b JB |
196 | int ret; |
197 | ||
9607e6b6 | 198 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
199 | return -EBUSY; |
200 | ||
478622e8 HS |
201 | ret = ieee80211_verify_mac(sdata->local, sa->sa_data); |
202 | if (ret) | |
203 | return ret; | |
204 | ||
fc5f7577 | 205 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
206 | |
207 | if (ret == 0) | |
fc5f7577 | 208 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
209 | |
210 | return ret; | |
211 | } | |
212 | ||
0d143fe1 JB |
213 | static inline int identical_mac_addr_allowed(int type1, int type2) |
214 | { | |
215 | return type1 == NL80211_IFTYPE_MONITOR || | |
216 | type2 == NL80211_IFTYPE_MONITOR || | |
f142c6b9 JB |
217 | type1 == NL80211_IFTYPE_P2P_DEVICE || |
218 | type2 == NL80211_IFTYPE_P2P_DEVICE || | |
0d143fe1 JB |
219 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || |
220 | (type1 == NL80211_IFTYPE_WDS && | |
221 | (type2 == NL80211_IFTYPE_WDS || | |
222 | type2 == NL80211_IFTYPE_AP)) || | |
223 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
224 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
225 | (type2 == NL80211_IFTYPE_AP || | |
226 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
227 | } | |
228 | ||
87490f6d JB |
229 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
230 | enum nl80211_iftype iftype) | |
0d143fe1 | 231 | { |
b4a4bf5d | 232 | struct ieee80211_local *local = sdata->local; |
87490f6d | 233 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 234 | |
87490f6d | 235 | ASSERT_RTNL(); |
0d143fe1 JB |
236 | |
237 | /* we hold the RTNL here so can safely walk the list */ | |
238 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 239 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
240 | /* |
241 | * Allow only a single IBSS interface to be up at any | |
242 | * time. This is restricted because beacon distribution | |
243 | * cannot work properly if both are in the same IBSS. | |
244 | * | |
245 | * To remove this restriction we'd have to disallow them | |
246 | * from setting the same SSID on different IBSS interfaces | |
247 | * belonging to the same hardware. Then, however, we're | |
248 | * faced with having to adopt two different TSF timers... | |
249 | */ | |
87490f6d | 250 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
251 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
252 | return -EBUSY; | |
253 | ||
254 | /* | |
255 | * The remaining checks are only performed for interfaces | |
256 | * with the same MAC address. | |
257 | */ | |
371a255e JB |
258 | if (!ether_addr_equal(sdata->vif.addr, |
259 | nsdata->vif.addr)) | |
0d143fe1 JB |
260 | continue; |
261 | ||
262 | /* | |
263 | * check whether it may have the same address | |
264 | */ | |
87490f6d | 265 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
266 | nsdata->vif.type)) |
267 | return -ENOTUNIQ; | |
268 | ||
269 | /* | |
270 | * can only add VLANs to enabled APs | |
271 | */ | |
87490f6d | 272 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
273 | nsdata->vif.type == NL80211_IFTYPE_AP) |
274 | sdata->bss = &nsdata->u.ap; | |
275 | } | |
276 | } | |
277 | ||
87490f6d JB |
278 | return 0; |
279 | } | |
280 | ||
3a25a8c8 JB |
281 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
282 | { | |
283 | int n_queues = sdata->local->hw.queues; | |
284 | int i; | |
285 | ||
0ef24e52 IP |
286 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) { |
287 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
288 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
289 | IEEE80211_INVAL_HW_QUEUE)) | |
290 | return -EINVAL; | |
291 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
292 | n_queues)) | |
293 | return -EINVAL; | |
294 | } | |
3a25a8c8 JB |
295 | } |
296 | ||
8ffb5c00 BC |
297 | if ((sdata->vif.type != NL80211_IFTYPE_AP && |
298 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT) || | |
bb3e10fb | 299 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { |
3a25a8c8 JB |
300 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
301 | return 0; | |
302 | } | |
303 | ||
304 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
305 | return -EINVAL; | |
306 | ||
307 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
308 | return -EINVAL; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
85416a4f CL |
313 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
314 | const int offset) | |
315 | { | |
316 | struct ieee80211_local *local = sdata->local; | |
317 | u32 flags = sdata->u.mntr_flags; | |
318 | ||
319 | #define ADJUST(_f, _s) do { \ | |
320 | if (flags & MONITOR_FLAG_##_f) \ | |
321 | local->fif_##_s += offset; \ | |
322 | } while (0) | |
323 | ||
324 | ADJUST(FCSFAIL, fcsfail); | |
325 | ADJUST(PLCPFAIL, plcpfail); | |
326 | ADJUST(CONTROL, control); | |
327 | ADJUST(CONTROL, pspoll); | |
328 | ADJUST(OTHER_BSS, other_bss); | |
329 | ||
330 | #undef ADJUST | |
331 | } | |
332 | ||
3a25a8c8 JB |
333 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
334 | { | |
335 | struct ieee80211_local *local = sdata->local; | |
336 | int i; | |
337 | ||
338 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
339 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
340 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 341 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 342 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
343 | else |
344 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
345 | } |
346 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
347 | } | |
348 | ||
075e0847 | 349 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
350 | { |
351 | struct ieee80211_sub_if_data *sdata; | |
685fb72b | 352 | int ret = 0; |
4b6f1dd6 JB |
353 | |
354 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
355 | return 0; | |
356 | ||
685fb72b JB |
357 | mutex_lock(&local->iflist_mtx); |
358 | ||
4b6f1dd6 | 359 | if (local->monitor_sdata) |
685fb72b | 360 | goto out_unlock; |
4b6f1dd6 JB |
361 | |
362 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
685fb72b JB |
363 | if (!sdata) { |
364 | ret = -ENOMEM; | |
365 | goto out_unlock; | |
366 | } | |
4b6f1dd6 JB |
367 | |
368 | /* set up data */ | |
369 | sdata->local = local; | |
370 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
371 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
372 | wiphy_name(local->hw.wiphy)); | |
373 | ||
3a25a8c8 JB |
374 | ieee80211_set_default_queues(sdata); |
375 | ||
4b6f1dd6 JB |
376 | ret = drv_add_interface(local, sdata); |
377 | if (WARN_ON(ret)) { | |
378 | /* ok .. stupid driver, it asked for this! */ | |
379 | kfree(sdata); | |
685fb72b | 380 | goto out_unlock; |
4b6f1dd6 JB |
381 | } |
382 | ||
3a25a8c8 JB |
383 | ret = ieee80211_check_queues(sdata); |
384 | if (ret) { | |
385 | kfree(sdata); | |
685fb72b | 386 | goto out_unlock; |
3a25a8c8 JB |
387 | } |
388 | ||
4bf88530 | 389 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a JB |
390 | IEEE80211_CHANCTX_EXCLUSIVE); |
391 | if (ret) { | |
392 | drv_remove_interface(local, sdata); | |
393 | kfree(sdata); | |
394 | goto out_unlock; | |
395 | } | |
396 | ||
4b6f1dd6 | 397 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b JB |
398 | out_unlock: |
399 | mutex_unlock(&local->iflist_mtx); | |
400 | return ret; | |
4b6f1dd6 JB |
401 | } |
402 | ||
075e0847 | 403 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
404 | { |
405 | struct ieee80211_sub_if_data *sdata; | |
406 | ||
407 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
408 | return; | |
409 | ||
685fb72b | 410 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 411 | |
685fb72b JB |
412 | sdata = rcu_dereference_protected(local->monitor_sdata, |
413 | lockdep_is_held(&local->iflist_mtx)); | |
4b6f1dd6 | 414 | if (!sdata) |
685fb72b | 415 | goto out_unlock; |
4b6f1dd6 JB |
416 | |
417 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
418 | synchronize_net(); | |
419 | ||
55de908a JB |
420 | ieee80211_vif_release_channel(sdata); |
421 | ||
4b6f1dd6 JB |
422 | drv_remove_interface(local, sdata); |
423 | ||
424 | kfree(sdata); | |
685fb72b JB |
425 | out_unlock: |
426 | mutex_unlock(&local->iflist_mtx); | |
4b6f1dd6 JB |
427 | } |
428 | ||
34d4bc4d JB |
429 | /* |
430 | * NOTE: Be very careful when changing this function, it must NOT return | |
431 | * an error on interface type changes that have been pre-checked, so most | |
432 | * checks should be in ieee80211_check_concurrent_iface. | |
433 | */ | |
f142c6b9 | 434 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 435 | { |
f142c6b9 JB |
436 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
437 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
438 | struct ieee80211_local *local = sdata->local; |
439 | struct sta_info *sta; | |
440 | u32 changed = 0; | |
441 | int res; | |
442 | u32 hw_reconf_flags = 0; | |
443 | ||
0d143fe1 JB |
444 | switch (sdata->vif.type) { |
445 | case NL80211_IFTYPE_WDS: | |
446 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
447 | return -ENOLINK; | |
448 | break; | |
665c93a9 JB |
449 | case NL80211_IFTYPE_AP_VLAN: { |
450 | struct ieee80211_sub_if_data *master; | |
451 | ||
0d143fe1 JB |
452 | if (!sdata->bss) |
453 | return -ENOLINK; | |
665c93a9 | 454 | |
0d143fe1 | 455 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
456 | |
457 | master = container_of(sdata->bss, | |
458 | struct ieee80211_sub_if_data, u.ap); | |
459 | sdata->control_port_protocol = | |
460 | master->control_port_protocol; | |
461 | sdata->control_port_no_encrypt = | |
462 | master->control_port_no_encrypt; | |
0d143fe1 | 463 | break; |
665c93a9 | 464 | } |
0d143fe1 JB |
465 | case NL80211_IFTYPE_AP: |
466 | sdata->bss = &sdata->u.ap; | |
467 | break; | |
468 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
469 | case NL80211_IFTYPE_STATION: |
470 | case NL80211_IFTYPE_MONITOR: | |
471 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 472 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
473 | /* no special treatment */ |
474 | break; | |
475 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 476 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
477 | case NL80211_IFTYPE_P2P_CLIENT: |
478 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
479 | /* cannot happen */ |
480 | WARN_ON(1); | |
481 | break; | |
482 | } | |
483 | ||
484 | if (local->open_count == 0) { | |
24487981 | 485 | res = drv_start(local); |
0d143fe1 JB |
486 | if (res) |
487 | goto err_del_bss; | |
4e6cbfd0 JL |
488 | if (local->ops->napi_poll) |
489 | napi_enable(&local->napi); | |
e8975581 JB |
490 | /* we're brought up, everything changes */ |
491 | hw_reconf_flags = ~0; | |
1f87f7d3 | 492 | ieee80211_led_radio(local, true); |
67408c8c JB |
493 | ieee80211_mod_tpt_led_trig(local, |
494 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
495 | } |
496 | ||
497 | /* | |
bf533e0b JB |
498 | * Copy the hopefully now-present MAC address to |
499 | * this interface, if it has the special null one. | |
0d143fe1 | 500 | */ |
f142c6b9 | 501 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
502 | memcpy(dev->dev_addr, |
503 | local->hw.wiphy->perm_addr, | |
504 | ETH_ALEN); | |
505 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
506 | ||
507 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
508 | res = -EADDRNOTAVAIL; |
509 | goto err_stop; | |
0adc23f5 | 510 | } |
0d143fe1 JB |
511 | } |
512 | ||
0d143fe1 JB |
513 | switch (sdata->vif.type) { |
514 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
515 | /* no need to tell driver, but set carrier and chanctx */ |
516 | if (rtnl_dereference(sdata->bss->beacon)) { | |
517 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 518 | netif_carrier_on(dev); |
4d76d21b | 519 | } else { |
3edaf3e6 | 520 | netif_carrier_off(dev); |
4d76d21b | 521 | } |
0d143fe1 JB |
522 | break; |
523 | case NL80211_IFTYPE_MONITOR: | |
524 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
525 | local->cooked_mntrs++; | |
526 | break; | |
527 | } | |
528 | ||
075e0847 JB |
529 | if (local->monitors == 0 && local->open_count == 0) { |
530 | res = ieee80211_add_virtual_monitor(local); | |
531 | if (res) | |
532 | goto err_stop; | |
533 | } | |
534 | ||
0d143fe1 JB |
535 | /* must be before the call to ieee80211_configure_filter */ |
536 | local->monitors++; | |
e8975581 | 537 | if (local->monitors == 1) { |
0869aea0 JB |
538 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
539 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 540 | } |
0d143fe1 | 541 | |
85416a4f | 542 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 543 | ieee80211_configure_filter(local); |
801d929c FF |
544 | mutex_lock(&local->mtx); |
545 | ieee80211_recalc_idle(local); | |
546 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
547 | |
548 | netif_carrier_on(dev); | |
0d143fe1 | 549 | break; |
0d143fe1 | 550 | default: |
34d4bc4d | 551 | if (coming_up) { |
075e0847 JB |
552 | ieee80211_del_virtual_monitor(local); |
553 | ||
7b7eab6f | 554 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
555 | if (res) |
556 | goto err_stop; | |
3a25a8c8 JB |
557 | res = ieee80211_check_queues(sdata); |
558 | if (res) | |
559 | goto err_del_interface; | |
34d4bc4d | 560 | } |
0d143fe1 | 561 | |
b207cdb0 AB |
562 | drv_add_interface_debugfs(local, sdata); |
563 | ||
29cbe68c | 564 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 565 | local->fif_pspoll++; |
7be5086d | 566 | local->fif_probe_req++; |
e3b90ca2 | 567 | |
e3b90ca2 | 568 | ieee80211_configure_filter(local); |
7be5086d JB |
569 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
570 | local->fif_probe_req++; | |
a3c9aa51 | 571 | } |
e3b90ca2 | 572 | |
f142c6b9 JB |
573 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
574 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 575 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 576 | |
c405c629 JB |
577 | switch (sdata->vif.type) { |
578 | case NL80211_IFTYPE_STATION: | |
579 | case NL80211_IFTYPE_ADHOC: | |
580 | case NL80211_IFTYPE_AP: | |
581 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 582 | netif_carrier_off(dev); |
c405c629 | 583 | break; |
1411af15 | 584 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 585 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 586 | break; |
c405c629 | 587 | default: |
0d143fe1 | 588 | netif_carrier_on(dev); |
c405c629 | 589 | } |
59034591 EP |
590 | |
591 | /* | |
592 | * set default queue parameters so drivers don't | |
593 | * need to initialise the hardware if the hardware | |
594 | * doesn't start up with sane defaults | |
595 | */ | |
3abead59 | 596 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
597 | } |
598 | ||
2d2080c3 JB |
599 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
600 | ||
0d143fe1 JB |
601 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
602 | /* Create STA entry for the WDS peer */ | |
603 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
604 | GFP_KERNEL); | |
605 | if (!sta) { | |
606 | res = -ENOMEM; | |
607 | goto err_del_interface; | |
608 | } | |
609 | ||
83d5cc01 JB |
610 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
611 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
612 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
613 | |
614 | res = sta_info_insert(sta); | |
615 | if (res) { | |
616 | /* STA has been freed */ | |
617 | goto err_del_interface; | |
618 | } | |
1be7fe8d BJ |
619 | |
620 | rate_control_rate_init(sta); | |
1411af15 | 621 | netif_carrier_on(dev); |
f142c6b9 JB |
622 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
623 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
624 | } |
625 | ||
0d143fe1 JB |
626 | /* |
627 | * set_multicast_list will be invoked by the networking core | |
628 | * which will check whether any increments here were done in | |
629 | * error and sync them down to the hardware as filter flags. | |
630 | */ | |
631 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
632 | atomic_inc(&local->iff_allmultis); | |
633 | ||
634 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
635 | atomic_inc(&local->iff_promiscs); | |
636 | ||
34d4bc4d JB |
637 | if (coming_up) |
638 | local->open_count++; | |
639 | ||
59034591 | 640 | if (hw_reconf_flags) |
e8975581 | 641 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 642 | |
10f644a4 | 643 | ieee80211_recalc_ps(local, -1); |
965bedad | 644 | |
f142c6b9 JB |
645 | if (dev) |
646 | netif_tx_start_all_queues(dev); | |
0d143fe1 JB |
647 | |
648 | return 0; | |
649 | err_del_interface: | |
7b7eab6f | 650 | drv_remove_interface(local, sdata); |
0d143fe1 | 651 | err_stop: |
24487981 JB |
652 | if (!local->open_count) |
653 | drv_stop(local); | |
0d143fe1 JB |
654 | err_del_bss: |
655 | sdata->bss = NULL; | |
656 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
657 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 658 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 659 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
660 | return res; |
661 | } | |
662 | ||
34d4bc4d | 663 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
664 | { |
665 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
666 | int err; |
667 | ||
668 | /* fail early if user set an invalid address */ | |
2fcf2824 | 669 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
670 | return -EADDRNOTAVAIL; |
671 | ||
672 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
673 | if (err) | |
674 | return err; | |
675 | ||
f142c6b9 | 676 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
677 | } |
678 | ||
679 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
680 | bool going_down) | |
681 | { | |
0d143fe1 | 682 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
683 | unsigned long flags; |
684 | struct sk_buff *skb, *tmp; | |
e8975581 | 685 | u32 hw_reconf_flags = 0; |
09f4114e | 686 | int i, flushed; |
397a7a24 | 687 | struct ps_data *ps; |
0d143fe1 | 688 | |
c29acf20 RM |
689 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
690 | ||
e2fd5dbc | 691 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
692 | ieee80211_scan_cancel(local); |
693 | ||
0d143fe1 JB |
694 | /* |
695 | * Stop TX on this interface first. | |
696 | */ | |
f142c6b9 JB |
697 | if (sdata->dev) |
698 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 699 | |
2eb278e0 | 700 | ieee80211_roc_purge(sdata); |
af6b6374 | 701 | |
572078be JB |
702 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
703 | ieee80211_mgd_stop(sdata); | |
704 | ||
0d143fe1 JB |
705 | /* |
706 | * Remove all stations associated with this interface. | |
707 | * | |
708 | * This must be done before calling ops->remove_interface() | |
709 | * because otherwise we can later invoke ops->sta_notify() | |
710 | * whenever the STAs are removed, and that invalidates driver | |
711 | * assumptions about always getting a vif pointer that is valid | |
712 | * (because if we remove a STA after ops->remove_interface() | |
713 | * the driver will have removed the vif info already!) | |
714 | * | |
09f4114e JB |
715 | * This is relevant only in WDS mode, in all other modes we've |
716 | * already removed all stations when disconnecting or similar, | |
717 | * so warn otherwise. | |
051007d9 JB |
718 | * |
719 | * We call sta_info_flush_cleanup() later, to combine RCU waits. | |
0d143fe1 | 720 | */ |
051007d9 | 721 | flushed = sta_info_flush_defer(sdata); |
09f4114e JB |
722 | WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
723 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); | |
0d143fe1 JB |
724 | |
725 | /* | |
726 | * Don't count this interface for promisc/allmulti while it | |
727 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
728 | * on the master interface which will sync these down to the | |
729 | * hardware as filter flags. | |
730 | */ | |
731 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
732 | atomic_dec(&local->iff_allmultis); | |
733 | ||
734 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
735 | atomic_dec(&local->iff_promiscs); | |
736 | ||
7be5086d | 737 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 738 | local->fif_pspoll--; |
7be5086d JB |
739 | local->fif_probe_req--; |
740 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
741 | local->fif_probe_req--; | |
742 | } | |
e3b90ca2 | 743 | |
f142c6b9 JB |
744 | if (sdata->dev) { |
745 | netif_addr_lock_bh(sdata->dev); | |
746 | spin_lock_bh(&local->filter_lock); | |
747 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
748 | sdata->dev->addr_len); | |
749 | spin_unlock_bh(&local->filter_lock); | |
750 | netif_addr_unlock_bh(sdata->dev); | |
3b8d81e0 | 751 | |
f142c6b9 JB |
752 | ieee80211_configure_filter(local); |
753 | } | |
3ac64bee | 754 | |
7cbf0ba5 VN |
755 | del_timer_sync(&local->dynamic_ps_timer); |
756 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 757 | |
04ecd257 JB |
758 | cancel_work_sync(&sdata->recalc_smps); |
759 | ||
164eb02d SW |
760 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
761 | ||
762 | if (sdata->wdev.cac_started) { | |
763 | mutex_lock(&local->iflist_mtx); | |
764 | ieee80211_vif_release_channel(sdata); | |
765 | mutex_unlock(&local->iflist_mtx); | |
766 | cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, | |
767 | GFP_KERNEL); | |
768 | } | |
769 | ||
0d143fe1 JB |
770 | /* APs need special treatment */ |
771 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 772 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
773 | |
774 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 775 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
776 | u.vlan.list) |
777 | dev_close(vlan->dev); | |
778 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
779 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
780 | /* remove all packets in parent bc_buf pointing to this dev */ | |
781 | ps = &sdata->bss->ps; | |
782 | ||
783 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
784 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
785 | if (skb->dev == sdata->dev) { | |
786 | __skb_unlink(skb, &ps->bc_buf); | |
787 | local->total_ps_buffered--; | |
788 | ieee80211_free_txskb(&local->hw, skb); | |
789 | } | |
790 | } | |
791 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
792 | } |
793 | ||
34d4bc4d JB |
794 | if (going_down) |
795 | local->open_count--; | |
0d143fe1 JB |
796 | |
797 | switch (sdata->vif.type) { | |
798 | case NL80211_IFTYPE_AP_VLAN: | |
799 | list_del(&sdata->u.vlan.list); | |
4d76d21b | 800 | rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); |
0d143fe1 JB |
801 | /* no need to tell driver */ |
802 | break; | |
803 | case NL80211_IFTYPE_MONITOR: | |
804 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
805 | local->cooked_mntrs--; | |
806 | break; | |
807 | } | |
808 | ||
809 | local->monitors--; | |
e8975581 | 810 | if (local->monitors == 0) { |
0869aea0 JB |
811 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
812 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 813 | ieee80211_del_virtual_monitor(local); |
e8975581 | 814 | } |
0d143fe1 | 815 | |
85416a4f | 816 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 817 | ieee80211_configure_filter(local); |
801d929c FF |
818 | mutex_lock(&local->mtx); |
819 | ieee80211_recalc_idle(local); | |
820 | mutex_unlock(&local->mtx); | |
0d143fe1 | 821 | break; |
f142c6b9 JB |
822 | case NL80211_IFTYPE_P2P_DEVICE: |
823 | /* relies on synchronize_rcu() below */ | |
824 | rcu_assign_pointer(local->p2p_sdata, NULL); | |
825 | /* fall through */ | |
0d143fe1 | 826 | default: |
0b7dff4f | 827 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
828 | /* |
829 | * When we get here, the interface is marked down. | |
75de9113 JB |
830 | * |
831 | * sta_info_flush_cleanup() requires rcu_barrier() | |
832 | * first to wait for the station call_rcu() calls | |
833 | * to complete, here we need at least sychronize_rcu() | |
834 | * it to wait for the RX path in case it is using the | |
835 | * interface and enqueuing frames at this very time on | |
836 | * another CPU. | |
35f20c14 | 837 | */ |
75de9113 | 838 | rcu_barrier(); |
051007d9 JB |
839 | sta_info_flush_cleanup(sdata); |
840 | ||
35f20c14 JB |
841 | skb_queue_purge(&sdata->skb_queue); |
842 | ||
b9dcf712 JB |
843 | /* |
844 | * Free all remaining keys, there shouldn't be any, | |
845 | * except maybe group keys in AP more or WDS? | |
846 | */ | |
ad0e2b5a | 847 | ieee80211_free_keys(sdata); |
b9dcf712 | 848 | |
b207cdb0 AB |
849 | drv_remove_interface_debugfs(local, sdata); |
850 | ||
34d4bc4d | 851 | if (going_down) |
7b7eab6f | 852 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
853 | } |
854 | ||
855 | sdata->bss = NULL; | |
856 | ||
5cff20e6 JB |
857 | ieee80211_recalc_ps(local, -1); |
858 | ||
0d143fe1 | 859 | if (local->open_count == 0) { |
4e6cbfd0 JL |
860 | if (local->ops->napi_poll) |
861 | napi_disable(&local->napi); | |
ea77f12f | 862 | ieee80211_clear_tx_pending(local); |
84f6a01c | 863 | ieee80211_stop_device(local); |
0d143fe1 | 864 | |
e8975581 JB |
865 | /* no reconfiguring after stop! */ |
866 | hw_reconf_flags = 0; | |
0d143fe1 JB |
867 | } |
868 | ||
e8975581 | 869 | /* do after stop to avoid reconfiguring when we stop anyway */ |
55de908a | 870 | if (hw_reconf_flags) |
e8975581 JB |
871 | ieee80211_hw_config(local, hw_reconf_flags); |
872 | ||
5061b0c2 JB |
873 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
874 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
875 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
876 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
877 | if (info->control.vif == &sdata->vif) { | |
878 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 879 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
880 | } |
881 | } | |
882 | } | |
883 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
884 | |
885 | if (local->monitors == local->open_count && local->monitors > 0) | |
886 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
887 | } |
888 | ||
889 | static int ieee80211_stop(struct net_device *dev) | |
890 | { | |
891 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
892 | ||
893 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 894 | |
0d143fe1 JB |
895 | return 0; |
896 | } | |
897 | ||
898 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
899 | { | |
0d143fe1 | 900 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 901 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
902 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
903 | ||
904 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
905 | promisc = !!(dev->flags & IFF_PROMISC); | |
906 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
907 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
908 | ||
909 | if (allmulti != sdata_allmulti) { | |
910 | if (dev->flags & IFF_ALLMULTI) | |
911 | atomic_inc(&local->iff_allmultis); | |
912 | else | |
913 | atomic_dec(&local->iff_allmultis); | |
914 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
915 | } | |
916 | ||
917 | if (promisc != sdata_promisc) { | |
918 | if (dev->flags & IFF_PROMISC) | |
919 | atomic_inc(&local->iff_promiscs); | |
920 | else | |
921 | atomic_dec(&local->iff_promiscs); | |
922 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
923 | } | |
3b8d81e0 | 924 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 925 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 926 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 927 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
928 | } |
929 | ||
75636525 JB |
930 | /* |
931 | * Called when the netdev is removed or, by the code below, before | |
932 | * the interface type changes. | |
933 | */ | |
f142c6b9 | 934 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 935 | { |
75636525 | 936 | int flushed; |
f0706e82 JB |
937 | int i; |
938 | ||
75636525 JB |
939 | /* free extra data */ |
940 | ieee80211_free_keys(sdata); | |
941 | ||
aee14ceb JM |
942 | ieee80211_debugfs_remove_netdev(sdata); |
943 | ||
f0706e82 | 944 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
945 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
946 | sdata->fragment_next = 0; | |
11a843b7 | 947 | |
b9dcf712 JB |
948 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
949 | mesh_rmc_free(sdata); | |
75636525 | 950 | |
b998e8bb | 951 | flushed = sta_info_flush(sdata); |
75636525 | 952 | WARN_ON(flushed); |
f0706e82 JB |
953 | } |
954 | ||
f142c6b9 JB |
955 | static void ieee80211_uninit(struct net_device *dev) |
956 | { | |
957 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
958 | } | |
959 | ||
cf0277e7 JB |
960 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
961 | struct sk_buff *skb) | |
962 | { | |
963 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
964 | } | |
965 | ||
587e729e JB |
966 | static const struct net_device_ops ieee80211_dataif_ops = { |
967 | .ndo_open = ieee80211_open, | |
968 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 969 | .ndo_uninit = ieee80211_uninit, |
587e729e | 970 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 971 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 972 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 973 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 974 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
975 | }; |
976 | ||
cf0277e7 JB |
977 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
978 | struct sk_buff *skb) | |
979 | { | |
980 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
981 | struct ieee80211_local *local = sdata->local; | |
982 | struct ieee80211_hdr *hdr; | |
983 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
984 | ||
32c5057b | 985 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
986 | return 0; |
987 | ||
988 | if (skb->len < 4 || | |
b49bb574 | 989 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
990 | return 0; /* doesn't matter, frame will be dropped */ |
991 | ||
b49bb574 | 992 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 993 | |
00e96dec | 994 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
995 | } |
996 | ||
587e729e JB |
997 | static const struct net_device_ops ieee80211_monitorif_ops = { |
998 | .ndo_open = ieee80211_open, | |
999 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1000 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1001 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1002 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
1003 | .ndo_change_mtu = ieee80211_change_mtu, |
1004 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 1005 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
1006 | }; |
1007 | ||
1008 | static void ieee80211_if_setup(struct net_device *dev) | |
1009 | { | |
1010 | ether_setup(dev); | |
550fd08c | 1011 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1012 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
1013 | dev->destructor = free_netdev; |
1014 | } | |
1015 | ||
1fa57d01 JB |
1016 | static void ieee80211_iface_work(struct work_struct *work) |
1017 | { | |
1018 | struct ieee80211_sub_if_data *sdata = | |
1019 | container_of(work, struct ieee80211_sub_if_data, work); | |
1020 | struct ieee80211_local *local = sdata->local; | |
1021 | struct sk_buff *skb; | |
344eec67 | 1022 | struct sta_info *sta; |
c1475ca9 | 1023 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
1024 | |
1025 | if (!ieee80211_sdata_running(sdata)) | |
1026 | return; | |
1027 | ||
1028 | if (local->scanning) | |
1029 | return; | |
1030 | ||
1031 | /* | |
1032 | * ieee80211_queue_work() should have picked up most cases, | |
1033 | * here we'll pick the rest. | |
1034 | */ | |
1035 | if (WARN(local->suspended, | |
1036 | "interface work scheduled while going to suspend\n")) | |
1037 | return; | |
1038 | ||
1039 | /* first process frames */ | |
1040 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1041 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1042 | ||
c1475ca9 JB |
1043 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1044 | ra_tid = (void *)&skb->cb; | |
1045 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1046 | ra_tid->tid); | |
1047 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1048 | ra_tid = (void *)&skb->cb; | |
1049 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1050 | ra_tid->tid); | |
1051 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1052 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1053 | int len = skb->len; |
bed7ee6e | 1054 | |
a93e3644 | 1055 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1056 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1057 | if (sta) { |
1058 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1059 | case WLAN_ACTION_ADDBA_REQ: | |
1060 | ieee80211_process_addba_request( | |
1061 | local, sta, mgmt, len); | |
1062 | break; | |
1063 | case WLAN_ACTION_ADDBA_RESP: | |
1064 | ieee80211_process_addba_resp(local, sta, | |
1065 | mgmt, len); | |
1066 | break; | |
1067 | case WLAN_ACTION_DELBA: | |
1068 | ieee80211_process_delba(sdata, sta, | |
1069 | mgmt, len); | |
1070 | break; | |
1071 | default: | |
1072 | WARN_ON(1); | |
1073 | break; | |
1074 | } | |
1075 | } | |
a93e3644 | 1076 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1077 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1078 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1079 | /* | |
1080 | * So the frame isn't mgmt, but frame_control | |
1081 | * is at the right place anyway, of course, so | |
1082 | * the if statement is correct. | |
1083 | * | |
1084 | * Warn if we have other data frame types here, | |
1085 | * they must not get here. | |
1086 | */ | |
1087 | WARN_ON(hdr->frame_control & | |
1088 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1089 | WARN_ON(!(hdr->seq_ctrl & | |
1090 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1091 | /* | |
1092 | * This was a fragment of a frame, received while | |
1093 | * a block-ack session was active. That cannot be | |
1094 | * right, so terminate the session. | |
1095 | */ | |
a93e3644 | 1096 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1097 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1098 | if (sta) { |
1099 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1100 | IEEE80211_QOS_CTL_TID_MASK; | |
1101 | ||
1102 | __ieee80211_stop_rx_ba_session( | |
1103 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1104 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1105 | true); | |
344eec67 | 1106 | } |
a93e3644 | 1107 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1108 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1109 | case NL80211_IFTYPE_STATION: |
1110 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1111 | break; | |
1112 | case NL80211_IFTYPE_ADHOC: | |
1113 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1114 | break; | |
1115 | case NL80211_IFTYPE_MESH_POINT: | |
1116 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1117 | break; | |
1118 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1119 | break; | |
1120 | default: | |
1121 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1122 | break; |
1123 | } | |
36b3a628 JB |
1124 | |
1125 | kfree_skb(skb); | |
1fa57d01 JB |
1126 | } |
1127 | ||
1128 | /* then other type-dependent work */ | |
1129 | switch (sdata->vif.type) { | |
1130 | case NL80211_IFTYPE_STATION: | |
1131 | ieee80211_sta_work(sdata); | |
1132 | break; | |
1133 | case NL80211_IFTYPE_ADHOC: | |
1134 | ieee80211_ibss_work(sdata); | |
1135 | break; | |
1136 | case NL80211_IFTYPE_MESH_POINT: | |
1137 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1138 | break; | |
1139 | ieee80211_mesh_work(sdata); | |
1140 | break; | |
1141 | default: | |
1142 | break; | |
1143 | } | |
1144 | } | |
1145 | ||
04ecd257 JB |
1146 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1147 | { | |
1148 | struct ieee80211_sub_if_data *sdata = | |
1149 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1150 | ||
1151 | ieee80211_recalc_smps(sdata); | |
1152 | } | |
1fa57d01 | 1153 | |
75636525 JB |
1154 | /* |
1155 | * Helper function to initialise an interface to a specific type. | |
1156 | */ | |
1157 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1158 | enum nl80211_iftype type) |
f0706e82 | 1159 | { |
75636525 JB |
1160 | /* clear type-dependent union */ |
1161 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1162 | ||
1163 | /* and set some type-dependent values */ | |
1164 | sdata->vif.type = type; | |
2ca27bcf | 1165 | sdata->vif.p2p = false; |
60719ffd | 1166 | sdata->wdev.iftype = type; |
75636525 | 1167 | |
a621fa4d JB |
1168 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1169 | sdata->control_port_no_encrypt = false; | |
1170 | ||
b53be792 SW |
1171 | sdata->noack_map = 0; |
1172 | ||
f142c6b9 JB |
1173 | /* only monitor/p2p-device differ */ |
1174 | if (sdata->dev) { | |
1175 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1176 | sdata->dev->type = ARPHRD_ETHER; | |
1177 | } | |
75636525 | 1178 | |
35f20c14 | 1179 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1180 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1181 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
35f20c14 | 1182 | |
75636525 | 1183 | switch (type) { |
2ca27bcf JB |
1184 | case NL80211_IFTYPE_P2P_GO: |
1185 | type = NL80211_IFTYPE_AP; | |
1186 | sdata->vif.type = type; | |
1187 | sdata->vif.p2p = true; | |
1188 | /* fall through */ | |
05c914fe | 1189 | case NL80211_IFTYPE_AP: |
d012a605 | 1190 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1191 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
ad2d223a | 1192 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
75636525 | 1193 | break; |
2ca27bcf JB |
1194 | case NL80211_IFTYPE_P2P_CLIENT: |
1195 | type = NL80211_IFTYPE_STATION; | |
1196 | sdata->vif.type = type; | |
1197 | sdata->vif.p2p = true; | |
1198 | /* fall through */ | |
05c914fe | 1199 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1200 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1201 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1202 | break; |
46900298 | 1203 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1204 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1205 | ieee80211_ibss_setup_sdata(sdata); |
1206 | break; | |
05c914fe | 1207 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1208 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1209 | ieee80211_mesh_init_sdata(sdata); | |
1210 | break; | |
05c914fe | 1211 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1212 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1213 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1214 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1215 | MONITOR_FLAG_OTHER_BSS; | |
1216 | break; | |
05c914fe | 1217 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1218 | sdata->vif.bss_conf.bssid = NULL; |
1219 | break; | |
05c914fe | 1220 | case NL80211_IFTYPE_AP_VLAN: |
ad2d223a | 1221 | break; |
98104fde | 1222 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1223 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1224 | break; |
05c914fe | 1225 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1226 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1227 | BUG(); |
1228 | break; | |
1229 | } | |
1230 | ||
1231 | ieee80211_debugfs_add_netdev(sdata); | |
1232 | } | |
1233 | ||
34d4bc4d JB |
1234 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1235 | enum nl80211_iftype type) | |
1236 | { | |
1237 | struct ieee80211_local *local = sdata->local; | |
1238 | int ret, err; | |
2ca27bcf JB |
1239 | enum nl80211_iftype internal_type = type; |
1240 | bool p2p = false; | |
34d4bc4d JB |
1241 | |
1242 | ASSERT_RTNL(); | |
1243 | ||
1244 | if (!local->ops->change_interface) | |
1245 | return -EBUSY; | |
1246 | ||
1247 | switch (sdata->vif.type) { | |
1248 | case NL80211_IFTYPE_AP: | |
1249 | case NL80211_IFTYPE_STATION: | |
1250 | case NL80211_IFTYPE_ADHOC: | |
1251 | /* | |
1252 | * Could maybe also all others here? | |
1253 | * Just not sure how that interacts | |
1254 | * with the RX/config path e.g. for | |
1255 | * mesh. | |
1256 | */ | |
1257 | break; | |
1258 | default: | |
1259 | return -EBUSY; | |
1260 | } | |
1261 | ||
1262 | switch (type) { | |
1263 | case NL80211_IFTYPE_AP: | |
1264 | case NL80211_IFTYPE_STATION: | |
1265 | case NL80211_IFTYPE_ADHOC: | |
1266 | /* | |
1267 | * Could probably support everything | |
1268 | * but WDS here (WDS do_open can fail | |
1269 | * under memory pressure, which this | |
1270 | * code isn't prepared to handle). | |
1271 | */ | |
1272 | break; | |
2ca27bcf JB |
1273 | case NL80211_IFTYPE_P2P_CLIENT: |
1274 | p2p = true; | |
1275 | internal_type = NL80211_IFTYPE_STATION; | |
1276 | break; | |
1277 | case NL80211_IFTYPE_P2P_GO: | |
1278 | p2p = true; | |
1279 | internal_type = NL80211_IFTYPE_AP; | |
1280 | break; | |
34d4bc4d JB |
1281 | default: |
1282 | return -EBUSY; | |
1283 | } | |
1284 | ||
2ca27bcf | 1285 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1286 | if (ret) |
1287 | return ret; | |
1288 | ||
1289 | ieee80211_do_stop(sdata, false); | |
1290 | ||
f142c6b9 | 1291 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1292 | |
2ca27bcf | 1293 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1294 | if (ret) |
1295 | type = sdata->vif.type; | |
1296 | ||
3a25a8c8 JB |
1297 | /* |
1298 | * Ignore return value here, there's not much we can do since | |
1299 | * the driver changed the interface type internally already. | |
1300 | * The warnings will hopefully make driver authors fix it :-) | |
1301 | */ | |
1302 | ieee80211_check_queues(sdata); | |
1303 | ||
34d4bc4d JB |
1304 | ieee80211_setup_sdata(sdata, type); |
1305 | ||
f142c6b9 | 1306 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1307 | WARN(err, "type change: do_open returned %d", err); |
1308 | ||
1309 | return ret; | |
1310 | } | |
1311 | ||
f3947e2d | 1312 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1313 | enum nl80211_iftype type) |
75636525 | 1314 | { |
34d4bc4d JB |
1315 | int ret; |
1316 | ||
f3947e2d JB |
1317 | ASSERT_RTNL(); |
1318 | ||
2ca27bcf | 1319 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1320 | return 0; |
1321 | ||
34d4bc4d JB |
1322 | if (ieee80211_sdata_running(sdata)) { |
1323 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1324 | if (ret) | |
1325 | return ret; | |
1326 | } else { | |
1327 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1328 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1329 | ieee80211_setup_sdata(sdata, type); |
1330 | } | |
75636525 JB |
1331 | |
1332 | /* reset some values that shouldn't be kept across type changes */ | |
75636525 | 1333 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1334 | if (type == NL80211_IFTYPE_STATION) |
1335 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1336 | |
1337 | return 0; | |
f0706e82 JB |
1338 | } |
1339 | ||
fa9029f8 | 1340 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1341 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1342 | { |
1343 | struct ieee80211_sub_if_data *sdata; | |
1344 | u64 mask, start, addr, val, inc; | |
1345 | u8 *m; | |
1346 | u8 tmp_addr[ETH_ALEN]; | |
1347 | int i; | |
1348 | ||
1349 | /* default ... something at least */ | |
f142c6b9 | 1350 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1351 | |
1352 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1353 | local->hw.wiphy->n_addresses <= 1) | |
1354 | return; | |
1355 | ||
fa9029f8 JB |
1356 | mutex_lock(&local->iflist_mtx); |
1357 | ||
1358 | switch (type) { | |
1359 | case NL80211_IFTYPE_MONITOR: | |
1360 | /* doesn't matter */ | |
1361 | break; | |
1362 | case NL80211_IFTYPE_WDS: | |
1363 | case NL80211_IFTYPE_AP_VLAN: | |
1364 | /* match up with an AP interface */ | |
1365 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1366 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1367 | continue; | |
f142c6b9 | 1368 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1369 | break; |
1370 | } | |
1371 | /* keep default if no AP interface present */ | |
1372 | break; | |
6d71117a JB |
1373 | case NL80211_IFTYPE_P2P_CLIENT: |
1374 | case NL80211_IFTYPE_P2P_GO: | |
1375 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1376 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1377 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1378 | continue; | |
1379 | if (!ieee80211_sdata_running(sdata)) | |
1380 | continue; | |
1381 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1382 | goto out_unlock; | |
1383 | } | |
1384 | } | |
1385 | /* otherwise fall through */ | |
fa9029f8 JB |
1386 | default: |
1387 | /* assign a new address if possible -- try n_addresses first */ | |
1388 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1389 | bool used = false; | |
1390 | ||
1391 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1392 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1393 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1394 | used = true; | |
1395 | break; | |
1396 | } | |
1397 | } | |
1398 | ||
1399 | if (!used) { | |
f142c6b9 | 1400 | memcpy(perm_addr, |
fa9029f8 JB |
1401 | local->hw.wiphy->addresses[i].addr, |
1402 | ETH_ALEN); | |
1403 | break; | |
1404 | } | |
1405 | } | |
1406 | ||
1407 | /* try mask if available */ | |
1408 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1409 | break; | |
1410 | ||
1411 | m = local->hw.wiphy->addr_mask; | |
1412 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1413 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1414 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1415 | ||
1416 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1417 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1418 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1419 | break; |
1420 | } | |
1421 | ||
1422 | m = local->hw.wiphy->perm_addr; | |
1423 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1424 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1425 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1426 | ||
1427 | inc = 1ULL<<__ffs64(mask); | |
1428 | val = (start & mask); | |
1429 | addr = (start & ~mask) | (val & mask); | |
1430 | do { | |
1431 | bool used = false; | |
1432 | ||
1433 | tmp_addr[5] = addr >> 0*8; | |
1434 | tmp_addr[4] = addr >> 1*8; | |
1435 | tmp_addr[3] = addr >> 2*8; | |
1436 | tmp_addr[2] = addr >> 3*8; | |
1437 | tmp_addr[1] = addr >> 4*8; | |
1438 | tmp_addr[0] = addr >> 5*8; | |
1439 | ||
1440 | val += inc; | |
1441 | ||
1442 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1443 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1444 | ETH_ALEN) == 0) { | |
1445 | used = true; | |
1446 | break; | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | if (!used) { | |
f142c6b9 | 1451 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1452 | break; |
1453 | } | |
1454 | addr = (start & ~mask) | (val & mask); | |
1455 | } while (addr != start); | |
1456 | ||
1457 | break; | |
1458 | } | |
1459 | ||
6d71117a | 1460 | out_unlock: |
fa9029f8 JB |
1461 | mutex_unlock(&local->iflist_mtx); |
1462 | } | |
1463 | ||
97f97b1f JB |
1464 | static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) |
1465 | { | |
1466 | struct ieee80211_sub_if_data *sdata; | |
1467 | ||
1468 | sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); | |
1469 | ||
1470 | ieee80211_cleanup_sdata_stas(sdata); | |
1471 | } | |
1472 | ||
3e122be0 | 1473 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1474 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1475 | struct vif_params *params) |
f0706e82 | 1476 | { |
f142c6b9 | 1477 | struct net_device *ndev = NULL; |
f0706e82 | 1478 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1479 | int ret, i; |
ded81f6b | 1480 | int txqs = 1; |
f0706e82 JB |
1481 | |
1482 | ASSERT_RTNL(); | |
75636525 | 1483 | |
f142c6b9 JB |
1484 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1485 | struct wireless_dev *wdev; | |
1486 | ||
1487 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1488 | GFP_KERNEL); | |
1489 | if (!sdata) | |
1490 | return -ENOMEM; | |
1491 | wdev = &sdata->wdev; | |
1492 | ||
1493 | sdata->dev = NULL; | |
1494 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1495 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1496 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1497 | } else { | |
1498 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1499 | txqs = IEEE80211_NUM_ACS; | |
1500 | ||
1501 | ndev = alloc_netdev_mqs(sizeof(*sdata) + | |
1502 | local->hw.vif_data_size, | |
1503 | name, ieee80211_if_setup, txqs, 1); | |
1504 | if (!ndev) | |
1505 | return -ENOMEM; | |
1506 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1507 | ||
1508 | ndev->needed_headroom = local->tx_headroom + | |
1509 | 4*6 /* four MAC addresses */ | |
1510 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1511 | + 6 /* mesh */ | |
1512 | + 8 /* rfc1042/bridge tunnel */ | |
1513 | - ETH_HLEN /* ethernet hard_header_len */ | |
1514 | + IEEE80211_ENCRYPT_HEADROOM; | |
1515 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1516 | ||
1517 | ret = dev_alloc_name(ndev, ndev->name); | |
1518 | if (ret < 0) { | |
1519 | free_netdev(ndev); | |
1520 | return ret; | |
1521 | } | |
1522 | ||
1523 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
1524 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
1525 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); | |
1526 | ||
1527 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1528 | sdata = netdev_priv(ndev); | |
1529 | ndev->ieee80211_ptr = &sdata->wdev; | |
1530 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1531 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1532 | ||
1533 | sdata->dev = ndev; | |
1534 | } | |
75636525 JB |
1535 | |
1536 | /* initialise type-independent data */ | |
f0706e82 | 1537 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1538 | sdata->local = local; |
75636525 JB |
1539 | |
1540 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1541 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1542 | ||
1543 | INIT_LIST_HEAD(&sdata->key_list); | |
1544 | ||
97f97b1f JB |
1545 | spin_lock_init(&sdata->cleanup_stations_lock); |
1546 | INIT_LIST_HEAD(&sdata->cleanup_stations); | |
1547 | INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); | |
164eb02d SW |
1548 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1549 | ieee80211_dfs_cac_timer_work); | |
97f97b1f | 1550 | |
37eb0b16 JM |
1551 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1552 | struct ieee80211_supported_band *sband; | |
1553 | sband = local->hw.wiphy->bands[i]; | |
1554 | sdata->rc_rateidx_mask[i] = | |
1555 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1556 | if (sband) |
1557 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1558 | sband->ht_cap.mcs.rx_mask, | |
1559 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1560 | else | |
1561 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1562 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1563 | } |
75636525 | 1564 | |
3a25a8c8 JB |
1565 | ieee80211_set_default_queues(sdata); |
1566 | ||
1ea6f9c0 JB |
1567 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1568 | sdata->user_power_level = local->user_power_level; | |
1569 | ||
75636525 JB |
1570 | /* setup type-dependent data */ |
1571 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1572 | |
f142c6b9 JB |
1573 | if (ndev) { |
1574 | if (params) { | |
1575 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1576 | if (type == NL80211_IFTYPE_STATION) | |
1577 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1578 | } | |
9bc383de | 1579 | |
f142c6b9 | 1580 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1581 | |
f142c6b9 JB |
1582 | ret = register_netdevice(ndev); |
1583 | if (ret) { | |
1584 | free_netdev(ndev); | |
1585 | return ret; | |
1586 | } | |
1587 | } | |
f0706e82 | 1588 | |
c771c9d8 | 1589 | mutex_lock(&local->iflist_mtx); |
79010420 | 1590 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1591 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1592 | |
84efbb84 JB |
1593 | if (new_wdev) |
1594 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1595 | |
f0706e82 | 1596 | return 0; |
f0706e82 JB |
1597 | } |
1598 | ||
f698d856 | 1599 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1600 | { |
f0706e82 | 1601 | ASSERT_RTNL(); |
11a843b7 | 1602 | |
c771c9d8 | 1603 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1604 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1605 | mutex_unlock(&sdata->local->iflist_mtx); |
1606 | ||
75636525 | 1607 | synchronize_rcu(); |
f142c6b9 JB |
1608 | |
1609 | if (sdata->dev) { | |
1610 | unregister_netdevice(sdata->dev); | |
1611 | } else { | |
1612 | cfg80211_unregister_wdev(&sdata->wdev); | |
1613 | kfree(sdata); | |
1614 | } | |
1615 | } | |
1616 | ||
1617 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1618 | { | |
1619 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1620 | return; | |
1621 | ieee80211_do_stop(sdata, true); | |
1622 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1623 | } |
1624 | ||
75636525 JB |
1625 | /* |
1626 | * Remove all interfaces, may only be called at hardware unregistration | |
1627 | * time because it doesn't do RCU-safe list removals. | |
1628 | */ | |
1629 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1630 | { |
75636525 | 1631 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1632 | LIST_HEAD(unreg_list); |
f142c6b9 | 1633 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1634 | |
1635 | ASSERT_RTNL(); | |
1636 | ||
efe117ab | 1637 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1638 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1639 | list_del(&sdata->list); | |
c771c9d8 | 1640 | |
f142c6b9 JB |
1641 | if (sdata->dev) |
1642 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1643 | else | |
1644 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1645 | } |
efe117ab ED |
1646 | mutex_unlock(&local->iflist_mtx); |
1647 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1648 | list_del(&unreg_list); |
f142c6b9 JB |
1649 | |
1650 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1651 | list_del(&sdata->list); | |
1652 | cfg80211_unregister_wdev(&sdata->wdev); | |
1653 | kfree(sdata); | |
1654 | } | |
f0706e82 | 1655 | } |
5cff20e6 | 1656 | |
47846c9b JB |
1657 | static int netdev_notify(struct notifier_block *nb, |
1658 | unsigned long state, | |
1659 | void *ndev) | |
1660 | { | |
1661 | struct net_device *dev = ndev; | |
1662 | struct ieee80211_sub_if_data *sdata; | |
1663 | ||
1664 | if (state != NETDEV_CHANGENAME) | |
1665 | return 0; | |
1666 | ||
1667 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1668 | return 0; | |
1669 | ||
1670 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1671 | return 0; | |
1672 | ||
1673 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1674 | ||
2f5265e6 | 1675 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1676 | |
1677 | ieee80211_debugfs_rename_netdev(sdata); | |
1678 | return 0; | |
1679 | } | |
1680 | ||
1681 | static struct notifier_block mac80211_netdev_notifier = { | |
1682 | .notifier_call = netdev_notify, | |
1683 | }; | |
1684 | ||
1685 | int ieee80211_iface_init(void) | |
1686 | { | |
1687 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1688 | } | |
1689 | ||
1690 | void ieee80211_iface_exit(void) | |
1691 | { | |
1692 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1693 | } |