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 | |
382a103b | 81 | 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; | |
8b305780 | 352 | int ret; |
4b6f1dd6 JB |
353 | |
354 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
355 | return 0; | |
356 | ||
8b305780 | 357 | ASSERT_RTNL(); |
685fb72b | 358 | |
4b6f1dd6 | 359 | if (local->monitor_sdata) |
8b305780 | 360 | return 0; |
4b6f1dd6 JB |
361 | |
362 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
8b305780 JB |
363 | if (!sdata) |
364 | return -ENOMEM; | |
4b6f1dd6 JB |
365 | |
366 | /* set up data */ | |
367 | sdata->local = local; | |
368 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
369 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
370 | wiphy_name(local->hw.wiphy)); | |
371 | ||
3a25a8c8 JB |
372 | ieee80211_set_default_queues(sdata); |
373 | ||
4b6f1dd6 JB |
374 | ret = drv_add_interface(local, sdata); |
375 | if (WARN_ON(ret)) { | |
376 | /* ok .. stupid driver, it asked for this! */ | |
377 | kfree(sdata); | |
8b305780 | 378 | return ret; |
4b6f1dd6 JB |
379 | } |
380 | ||
3a25a8c8 JB |
381 | ret = ieee80211_check_queues(sdata); |
382 | if (ret) { | |
383 | kfree(sdata); | |
8b305780 | 384 | return ret; |
3a25a8c8 JB |
385 | } |
386 | ||
4bf88530 | 387 | ret = ieee80211_vif_use_channel(sdata, &local->monitor_chandef, |
55de908a JB |
388 | IEEE80211_CHANCTX_EXCLUSIVE); |
389 | if (ret) { | |
390 | drv_remove_interface(local, sdata); | |
391 | kfree(sdata); | |
8b305780 | 392 | return ret; |
55de908a JB |
393 | } |
394 | ||
8b305780 | 395 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 396 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b | 397 | mutex_unlock(&local->iflist_mtx); |
8b305780 JB |
398 | |
399 | return 0; | |
4b6f1dd6 JB |
400 | } |
401 | ||
075e0847 | 402 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
403 | { |
404 | struct ieee80211_sub_if_data *sdata; | |
405 | ||
406 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
407 | return; | |
408 | ||
8b305780 JB |
409 | ASSERT_RTNL(); |
410 | ||
685fb72b | 411 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 412 | |
685fb72b JB |
413 | sdata = rcu_dereference_protected(local->monitor_sdata, |
414 | lockdep_is_held(&local->iflist_mtx)); | |
8b305780 JB |
415 | if (!sdata) { |
416 | mutex_unlock(&local->iflist_mtx); | |
417 | return; | |
418 | } | |
4b6f1dd6 JB |
419 | |
420 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
8b305780 JB |
421 | mutex_unlock(&local->iflist_mtx); |
422 | ||
4b6f1dd6 JB |
423 | synchronize_net(); |
424 | ||
55de908a JB |
425 | ieee80211_vif_release_channel(sdata); |
426 | ||
4b6f1dd6 JB |
427 | drv_remove_interface(local, sdata); |
428 | ||
429 | kfree(sdata); | |
430 | } | |
431 | ||
34d4bc4d JB |
432 | /* |
433 | * NOTE: Be very careful when changing this function, it must NOT return | |
434 | * an error on interface type changes that have been pre-checked, so most | |
435 | * checks should be in ieee80211_check_concurrent_iface. | |
436 | */ | |
f142c6b9 | 437 | int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) |
87490f6d | 438 | { |
f142c6b9 JB |
439 | struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); |
440 | struct net_device *dev = wdev->netdev; | |
87490f6d JB |
441 | struct ieee80211_local *local = sdata->local; |
442 | struct sta_info *sta; | |
443 | u32 changed = 0; | |
444 | int res; | |
445 | u32 hw_reconf_flags = 0; | |
446 | ||
0d143fe1 JB |
447 | switch (sdata->vif.type) { |
448 | case NL80211_IFTYPE_WDS: | |
449 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
450 | return -ENOLINK; | |
451 | break; | |
665c93a9 JB |
452 | case NL80211_IFTYPE_AP_VLAN: { |
453 | struct ieee80211_sub_if_data *master; | |
454 | ||
0d143fe1 JB |
455 | if (!sdata->bss) |
456 | return -ENOLINK; | |
665c93a9 | 457 | |
0d143fe1 | 458 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
459 | |
460 | master = container_of(sdata->bss, | |
461 | struct ieee80211_sub_if_data, u.ap); | |
462 | sdata->control_port_protocol = | |
463 | master->control_port_protocol; | |
464 | sdata->control_port_no_encrypt = | |
465 | master->control_port_no_encrypt; | |
0d143fe1 | 466 | break; |
665c93a9 | 467 | } |
0d143fe1 JB |
468 | case NL80211_IFTYPE_AP: |
469 | sdata->bss = &sdata->u.ap; | |
470 | break; | |
471 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
472 | case NL80211_IFTYPE_STATION: |
473 | case NL80211_IFTYPE_MONITOR: | |
474 | case NL80211_IFTYPE_ADHOC: | |
f142c6b9 | 475 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
476 | /* no special treatment */ |
477 | break; | |
478 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 479 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
480 | case NL80211_IFTYPE_P2P_CLIENT: |
481 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
482 | /* cannot happen */ |
483 | WARN_ON(1); | |
484 | break; | |
485 | } | |
486 | ||
487 | if (local->open_count == 0) { | |
24487981 | 488 | res = drv_start(local); |
0d143fe1 JB |
489 | if (res) |
490 | goto err_del_bss; | |
4e6cbfd0 JL |
491 | if (local->ops->napi_poll) |
492 | napi_enable(&local->napi); | |
e8975581 JB |
493 | /* we're brought up, everything changes */ |
494 | hw_reconf_flags = ~0; | |
1f87f7d3 | 495 | ieee80211_led_radio(local, true); |
67408c8c JB |
496 | ieee80211_mod_tpt_led_trig(local, |
497 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
498 | } |
499 | ||
500 | /* | |
bf533e0b JB |
501 | * Copy the hopefully now-present MAC address to |
502 | * this interface, if it has the special null one. | |
0d143fe1 | 503 | */ |
f142c6b9 | 504 | if (dev && is_zero_ether_addr(dev->dev_addr)) { |
bf533e0b JB |
505 | memcpy(dev->dev_addr, |
506 | local->hw.wiphy->perm_addr, | |
507 | ETH_ALEN); | |
508 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
509 | ||
510 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
511 | res = -EADDRNOTAVAIL; |
512 | goto err_stop; | |
0adc23f5 | 513 | } |
0d143fe1 JB |
514 | } |
515 | ||
0d143fe1 JB |
516 | switch (sdata->vif.type) { |
517 | case NL80211_IFTYPE_AP_VLAN: | |
4d76d21b JB |
518 | /* no need to tell driver, but set carrier and chanctx */ |
519 | if (rtnl_dereference(sdata->bss->beacon)) { | |
520 | ieee80211_vif_vlan_copy_chanctx(sdata); | |
3edaf3e6 | 521 | netif_carrier_on(dev); |
4d76d21b | 522 | } else { |
3edaf3e6 | 523 | netif_carrier_off(dev); |
4d76d21b | 524 | } |
0d143fe1 JB |
525 | break; |
526 | case NL80211_IFTYPE_MONITOR: | |
527 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
528 | local->cooked_mntrs++; | |
529 | break; | |
530 | } | |
531 | ||
075e0847 JB |
532 | if (local->monitors == 0 && local->open_count == 0) { |
533 | res = ieee80211_add_virtual_monitor(local); | |
534 | if (res) | |
535 | goto err_stop; | |
536 | } | |
537 | ||
0d143fe1 JB |
538 | /* must be before the call to ieee80211_configure_filter */ |
539 | local->monitors++; | |
e8975581 | 540 | if (local->monitors == 1) { |
0869aea0 JB |
541 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
542 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 543 | } |
0d143fe1 | 544 | |
85416a4f | 545 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 546 | ieee80211_configure_filter(local); |
801d929c FF |
547 | mutex_lock(&local->mtx); |
548 | ieee80211_recalc_idle(local); | |
549 | mutex_unlock(&local->mtx); | |
53e9b1de DG |
550 | |
551 | netif_carrier_on(dev); | |
0d143fe1 | 552 | break; |
0d143fe1 | 553 | default: |
34d4bc4d | 554 | if (coming_up) { |
075e0847 JB |
555 | ieee80211_del_virtual_monitor(local); |
556 | ||
7b7eab6f | 557 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
558 | if (res) |
559 | goto err_stop; | |
3a25a8c8 JB |
560 | res = ieee80211_check_queues(sdata); |
561 | if (res) | |
562 | goto err_del_interface; | |
34d4bc4d | 563 | } |
0d143fe1 | 564 | |
b207cdb0 AB |
565 | drv_add_interface_debugfs(local, sdata); |
566 | ||
29cbe68c | 567 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 568 | local->fif_pspoll++; |
7be5086d | 569 | local->fif_probe_req++; |
e3b90ca2 | 570 | |
e3b90ca2 | 571 | ieee80211_configure_filter(local); |
7be5086d JB |
572 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
573 | local->fif_probe_req++; | |
a3c9aa51 | 574 | } |
e3b90ca2 | 575 | |
f142c6b9 JB |
576 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) |
577 | changed |= ieee80211_reset_erp_info(sdata); | |
0d143fe1 | 578 | ieee80211_bss_info_change_notify(sdata, changed); |
0d143fe1 | 579 | |
c405c629 JB |
580 | switch (sdata->vif.type) { |
581 | case NL80211_IFTYPE_STATION: | |
582 | case NL80211_IFTYPE_ADHOC: | |
583 | case NL80211_IFTYPE_AP: | |
584 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 585 | netif_carrier_off(dev); |
c405c629 | 586 | break; |
1411af15 | 587 | case NL80211_IFTYPE_WDS: |
f142c6b9 | 588 | case NL80211_IFTYPE_P2P_DEVICE: |
1411af15 | 589 | break; |
c405c629 | 590 | default: |
0d143fe1 | 591 | netif_carrier_on(dev); |
c405c629 | 592 | } |
59034591 EP |
593 | |
594 | /* | |
595 | * set default queue parameters so drivers don't | |
596 | * need to initialise the hardware if the hardware | |
597 | * doesn't start up with sane defaults | |
598 | */ | |
3abead59 | 599 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
600 | } |
601 | ||
2d2080c3 JB |
602 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
603 | ||
0d143fe1 JB |
604 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
605 | /* Create STA entry for the WDS peer */ | |
606 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
607 | GFP_KERNEL); | |
608 | if (!sta) { | |
609 | res = -ENOMEM; | |
610 | goto err_del_interface; | |
611 | } | |
612 | ||
83d5cc01 JB |
613 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
614 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
615 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
616 | |
617 | res = sta_info_insert(sta); | |
618 | if (res) { | |
619 | /* STA has been freed */ | |
620 | goto err_del_interface; | |
621 | } | |
1be7fe8d BJ |
622 | |
623 | rate_control_rate_init(sta); | |
1411af15 | 624 | netif_carrier_on(dev); |
f142c6b9 JB |
625 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
626 | rcu_assign_pointer(local->p2p_sdata, sdata); | |
0d143fe1 JB |
627 | } |
628 | ||
0d143fe1 JB |
629 | /* |
630 | * set_multicast_list will be invoked by the networking core | |
631 | * which will check whether any increments here were done in | |
632 | * error and sync them down to the hardware as filter flags. | |
633 | */ | |
634 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
635 | atomic_inc(&local->iff_allmultis); | |
636 | ||
637 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
638 | atomic_inc(&local->iff_promiscs); | |
639 | ||
34d4bc4d JB |
640 | if (coming_up) |
641 | local->open_count++; | |
642 | ||
59034591 | 643 | if (hw_reconf_flags) |
e8975581 | 644 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 645 | |
10f644a4 | 646 | ieee80211_recalc_ps(local, -1); |
965bedad | 647 | |
f142c6b9 JB |
648 | if (dev) |
649 | netif_tx_start_all_queues(dev); | |
0d143fe1 JB |
650 | |
651 | return 0; | |
652 | err_del_interface: | |
7b7eab6f | 653 | drv_remove_interface(local, sdata); |
0d143fe1 | 654 | err_stop: |
24487981 JB |
655 | if (!local->open_count) |
656 | drv_stop(local); | |
0d143fe1 JB |
657 | err_del_bss: |
658 | sdata->bss = NULL; | |
659 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
660 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 661 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 662 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
663 | return res; |
664 | } | |
665 | ||
34d4bc4d | 666 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
667 | { |
668 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
669 | int err; |
670 | ||
671 | /* fail early if user set an invalid address */ | |
2fcf2824 | 672 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
673 | return -EADDRNOTAVAIL; |
674 | ||
675 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
676 | if (err) | |
677 | return err; | |
678 | ||
f142c6b9 | 679 | return ieee80211_do_open(&sdata->wdev, true); |
34d4bc4d JB |
680 | } |
681 | ||
682 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
683 | bool going_down) | |
684 | { | |
0d143fe1 | 685 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
686 | unsigned long flags; |
687 | struct sk_buff *skb, *tmp; | |
e8975581 | 688 | u32 hw_reconf_flags = 0; |
09f4114e | 689 | int i, flushed; |
397a7a24 | 690 | struct ps_data *ps; |
0d143fe1 | 691 | |
c29acf20 RM |
692 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
693 | ||
e2fd5dbc | 694 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
695 | ieee80211_scan_cancel(local); |
696 | ||
0d143fe1 JB |
697 | /* |
698 | * Stop TX on this interface first. | |
699 | */ | |
f142c6b9 JB |
700 | if (sdata->dev) |
701 | netif_tx_stop_all_queues(sdata->dev); | |
0d143fe1 | 702 | |
2eb278e0 | 703 | ieee80211_roc_purge(sdata); |
af6b6374 | 704 | |
572078be JB |
705 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
706 | ieee80211_mgd_stop(sdata); | |
707 | ||
0d143fe1 JB |
708 | /* |
709 | * Remove all stations associated with this interface. | |
710 | * | |
711 | * This must be done before calling ops->remove_interface() | |
712 | * because otherwise we can later invoke ops->sta_notify() | |
713 | * whenever the STAs are removed, and that invalidates driver | |
714 | * assumptions about always getting a vif pointer that is valid | |
715 | * (because if we remove a STA after ops->remove_interface() | |
716 | * the driver will have removed the vif info already!) | |
717 | * | |
09f4114e JB |
718 | * This is relevant only in WDS mode, in all other modes we've |
719 | * already removed all stations when disconnecting or similar, | |
720 | * so warn otherwise. | |
051007d9 JB |
721 | * |
722 | * We call sta_info_flush_cleanup() later, to combine RCU waits. | |
0d143fe1 | 723 | */ |
051007d9 | 724 | flushed = sta_info_flush_defer(sdata); |
09f4114e JB |
725 | WARN_ON_ONCE((sdata->vif.type != NL80211_IFTYPE_WDS && flushed > 0) || |
726 | (sdata->vif.type == NL80211_IFTYPE_WDS && flushed != 1)); | |
0d143fe1 JB |
727 | |
728 | /* | |
729 | * Don't count this interface for promisc/allmulti while it | |
730 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
731 | * on the master interface which will sync these down to the | |
732 | * hardware as filter flags. | |
733 | */ | |
734 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
735 | atomic_dec(&local->iff_allmultis); | |
736 | ||
737 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
738 | atomic_dec(&local->iff_promiscs); | |
739 | ||
7be5086d | 740 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 741 | local->fif_pspoll--; |
7be5086d JB |
742 | local->fif_probe_req--; |
743 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
744 | local->fif_probe_req--; | |
745 | } | |
e3b90ca2 | 746 | |
f142c6b9 JB |
747 | if (sdata->dev) { |
748 | netif_addr_lock_bh(sdata->dev); | |
749 | spin_lock_bh(&local->filter_lock); | |
750 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, | |
751 | sdata->dev->addr_len); | |
752 | spin_unlock_bh(&local->filter_lock); | |
753 | netif_addr_unlock_bh(sdata->dev); | |
3b8d81e0 | 754 | |
f142c6b9 JB |
755 | ieee80211_configure_filter(local); |
756 | } | |
3ac64bee | 757 | |
7cbf0ba5 VN |
758 | del_timer_sync(&local->dynamic_ps_timer); |
759 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 | 760 | |
04ecd257 JB |
761 | cancel_work_sync(&sdata->recalc_smps); |
762 | ||
164eb02d SW |
763 | cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); |
764 | ||
765 | if (sdata->wdev.cac_started) { | |
766 | mutex_lock(&local->iflist_mtx); | |
767 | ieee80211_vif_release_channel(sdata); | |
768 | mutex_unlock(&local->iflist_mtx); | |
769 | cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED, | |
770 | GFP_KERNEL); | |
771 | } | |
772 | ||
0d143fe1 JB |
773 | /* APs need special treatment */ |
774 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 775 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
0d143fe1 JB |
776 | |
777 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 778 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
779 | u.vlan.list) |
780 | dev_close(vlan->dev); | |
781 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
397a7a24 MB |
782 | } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
783 | /* remove all packets in parent bc_buf pointing to this dev */ | |
784 | ps = &sdata->bss->ps; | |
785 | ||
786 | spin_lock_irqsave(&ps->bc_buf.lock, flags); | |
787 | skb_queue_walk_safe(&ps->bc_buf, skb, tmp) { | |
788 | if (skb->dev == sdata->dev) { | |
789 | __skb_unlink(skb, &ps->bc_buf); | |
790 | local->total_ps_buffered--; | |
791 | ieee80211_free_txskb(&local->hw, skb); | |
792 | } | |
793 | } | |
794 | spin_unlock_irqrestore(&ps->bc_buf.lock, flags); | |
0d143fe1 JB |
795 | } |
796 | ||
34d4bc4d JB |
797 | if (going_down) |
798 | local->open_count--; | |
0d143fe1 JB |
799 | |
800 | switch (sdata->vif.type) { | |
801 | case NL80211_IFTYPE_AP_VLAN: | |
802 | list_del(&sdata->u.vlan.list); | |
4d76d21b | 803 | rcu_assign_pointer(sdata->vif.chanctx_conf, NULL); |
0d143fe1 JB |
804 | /* no need to tell driver */ |
805 | break; | |
806 | case NL80211_IFTYPE_MONITOR: | |
807 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
808 | local->cooked_mntrs--; | |
809 | break; | |
810 | } | |
811 | ||
812 | local->monitors--; | |
e8975581 | 813 | if (local->monitors == 0) { |
0869aea0 JB |
814 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
815 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 816 | ieee80211_del_virtual_monitor(local); |
e8975581 | 817 | } |
0d143fe1 | 818 | |
85416a4f | 819 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 820 | ieee80211_configure_filter(local); |
801d929c FF |
821 | mutex_lock(&local->mtx); |
822 | ieee80211_recalc_idle(local); | |
823 | mutex_unlock(&local->mtx); | |
0d143fe1 | 824 | break; |
f142c6b9 JB |
825 | case NL80211_IFTYPE_P2P_DEVICE: |
826 | /* relies on synchronize_rcu() below */ | |
827 | rcu_assign_pointer(local->p2p_sdata, NULL); | |
828 | /* fall through */ | |
0d143fe1 | 829 | default: |
0b7dff4f | 830 | cancel_work_sync(&sdata->work); |
35f20c14 JB |
831 | /* |
832 | * When we get here, the interface is marked down. | |
75de9113 JB |
833 | * |
834 | * sta_info_flush_cleanup() requires rcu_barrier() | |
835 | * first to wait for the station call_rcu() calls | |
836 | * to complete, here we need at least sychronize_rcu() | |
837 | * it to wait for the RX path in case it is using the | |
838 | * interface and enqueuing frames at this very time on | |
839 | * another CPU. | |
35f20c14 | 840 | */ |
75de9113 | 841 | rcu_barrier(); |
051007d9 JB |
842 | sta_info_flush_cleanup(sdata); |
843 | ||
35f20c14 JB |
844 | skb_queue_purge(&sdata->skb_queue); |
845 | ||
b9dcf712 JB |
846 | /* |
847 | * Free all remaining keys, there shouldn't be any, | |
848 | * except maybe group keys in AP more or WDS? | |
849 | */ | |
ad0e2b5a | 850 | ieee80211_free_keys(sdata); |
b9dcf712 | 851 | |
b207cdb0 AB |
852 | drv_remove_interface_debugfs(local, sdata); |
853 | ||
34d4bc4d | 854 | if (going_down) |
7b7eab6f | 855 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
856 | } |
857 | ||
858 | sdata->bss = NULL; | |
859 | ||
5cff20e6 JB |
860 | ieee80211_recalc_ps(local, -1); |
861 | ||
0d143fe1 | 862 | if (local->open_count == 0) { |
4e6cbfd0 JL |
863 | if (local->ops->napi_poll) |
864 | napi_disable(&local->napi); | |
ea77f12f | 865 | ieee80211_clear_tx_pending(local); |
84f6a01c | 866 | ieee80211_stop_device(local); |
0d143fe1 | 867 | |
e8975581 JB |
868 | /* no reconfiguring after stop! */ |
869 | hw_reconf_flags = 0; | |
0d143fe1 JB |
870 | } |
871 | ||
e8975581 | 872 | /* do after stop to avoid reconfiguring when we stop anyway */ |
55de908a | 873 | if (hw_reconf_flags) |
e8975581 JB |
874 | ieee80211_hw_config(local, hw_reconf_flags); |
875 | ||
5061b0c2 JB |
876 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
877 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
878 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
879 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
880 | if (info->control.vif == &sdata->vif) { | |
881 | __skb_unlink(skb, &local->pending[i]); | |
d4fa14cd | 882 | ieee80211_free_txskb(&local->hw, skb); |
5061b0c2 JB |
883 | } |
884 | } | |
885 | } | |
886 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
887 | |
888 | if (local->monitors == local->open_count && local->monitors > 0) | |
889 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
890 | } |
891 | ||
892 | static int ieee80211_stop(struct net_device *dev) | |
893 | { | |
894 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
895 | ||
896 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 897 | |
0d143fe1 JB |
898 | return 0; |
899 | } | |
900 | ||
901 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
902 | { | |
0d143fe1 | 903 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 904 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
905 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
906 | ||
907 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
908 | promisc = !!(dev->flags & IFF_PROMISC); | |
909 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
910 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
911 | ||
912 | if (allmulti != sdata_allmulti) { | |
913 | if (dev->flags & IFF_ALLMULTI) | |
914 | atomic_inc(&local->iff_allmultis); | |
915 | else | |
916 | atomic_dec(&local->iff_allmultis); | |
917 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
918 | } | |
919 | ||
920 | if (promisc != sdata_promisc) { | |
921 | if (dev->flags & IFF_PROMISC) | |
922 | atomic_inc(&local->iff_promiscs); | |
923 | else | |
924 | atomic_dec(&local->iff_promiscs); | |
925 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
926 | } | |
3b8d81e0 | 927 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 928 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 929 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 930 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
931 | } |
932 | ||
75636525 JB |
933 | /* |
934 | * Called when the netdev is removed or, by the code below, before | |
935 | * the interface type changes. | |
936 | */ | |
f142c6b9 | 937 | static void ieee80211_teardown_sdata(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 938 | { |
75636525 | 939 | int flushed; |
f0706e82 JB |
940 | int i; |
941 | ||
75636525 JB |
942 | /* free extra data */ |
943 | ieee80211_free_keys(sdata); | |
944 | ||
aee14ceb JM |
945 | ieee80211_debugfs_remove_netdev(sdata); |
946 | ||
f0706e82 | 947 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
948 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
949 | sdata->fragment_next = 0; | |
11a843b7 | 950 | |
b9dcf712 JB |
951 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
952 | mesh_rmc_free(sdata); | |
75636525 | 953 | |
b998e8bb | 954 | flushed = sta_info_flush(sdata); |
75636525 | 955 | WARN_ON(flushed); |
f0706e82 JB |
956 | } |
957 | ||
f142c6b9 JB |
958 | static void ieee80211_uninit(struct net_device *dev) |
959 | { | |
960 | ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev)); | |
961 | } | |
962 | ||
cf0277e7 JB |
963 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
964 | struct sk_buff *skb) | |
965 | { | |
966 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
967 | } | |
968 | ||
587e729e JB |
969 | static const struct net_device_ops ieee80211_dataif_ops = { |
970 | .ndo_open = ieee80211_open, | |
971 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 972 | .ndo_uninit = ieee80211_uninit, |
587e729e | 973 | .ndo_start_xmit = ieee80211_subif_start_xmit, |
afc4b13d | 974 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 975 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 976 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 977 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
978 | }; |
979 | ||
cf0277e7 JB |
980 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
981 | struct sk_buff *skb) | |
982 | { | |
983 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
984 | struct ieee80211_local *local = sdata->local; | |
985 | struct ieee80211_hdr *hdr; | |
986 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
987 | ||
32c5057b | 988 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
989 | return 0; |
990 | ||
991 | if (skb->len < 4 || | |
b49bb574 | 992 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
993 | return 0; /* doesn't matter, frame will be dropped */ |
994 | ||
b49bb574 | 995 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 996 | |
00e96dec | 997 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
998 | } |
999 | ||
587e729e JB |
1000 | static const struct net_device_ops ieee80211_monitorif_ops = { |
1001 | .ndo_open = ieee80211_open, | |
1002 | .ndo_stop = ieee80211_stop, | |
f142c6b9 | 1003 | .ndo_uninit = ieee80211_uninit, |
587e729e | 1004 | .ndo_start_xmit = ieee80211_monitor_start_xmit, |
afc4b13d | 1005 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
1006 | .ndo_change_mtu = ieee80211_change_mtu, |
1007 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 1008 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
1009 | }; |
1010 | ||
1011 | static void ieee80211_if_setup(struct net_device *dev) | |
1012 | { | |
1013 | ether_setup(dev); | |
550fd08c | 1014 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 1015 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
1016 | dev->destructor = free_netdev; |
1017 | } | |
1018 | ||
1fa57d01 JB |
1019 | static void ieee80211_iface_work(struct work_struct *work) |
1020 | { | |
1021 | struct ieee80211_sub_if_data *sdata = | |
1022 | container_of(work, struct ieee80211_sub_if_data, work); | |
1023 | struct ieee80211_local *local = sdata->local; | |
1024 | struct sk_buff *skb; | |
344eec67 | 1025 | struct sta_info *sta; |
c1475ca9 | 1026 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
1027 | |
1028 | if (!ieee80211_sdata_running(sdata)) | |
1029 | return; | |
1030 | ||
1031 | if (local->scanning) | |
1032 | return; | |
1033 | ||
1034 | /* | |
1035 | * ieee80211_queue_work() should have picked up most cases, | |
1036 | * here we'll pick the rest. | |
1037 | */ | |
1038 | if (WARN(local->suspended, | |
1039 | "interface work scheduled while going to suspend\n")) | |
1040 | return; | |
1041 | ||
1042 | /* first process frames */ | |
1043 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
1044 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
1045 | ||
c1475ca9 JB |
1046 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
1047 | ra_tid = (void *)&skb->cb; | |
1048 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1049 | ra_tid->tid); | |
1050 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
1051 | ra_tid = (void *)&skb->cb; | |
1052 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1053 | ra_tid->tid); | |
1054 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1055 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1056 | int len = skb->len; |
bed7ee6e | 1057 | |
a93e3644 | 1058 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1059 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1060 | if (sta) { |
1061 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1062 | case WLAN_ACTION_ADDBA_REQ: | |
1063 | ieee80211_process_addba_request( | |
1064 | local, sta, mgmt, len); | |
1065 | break; | |
1066 | case WLAN_ACTION_ADDBA_RESP: | |
1067 | ieee80211_process_addba_resp(local, sta, | |
1068 | mgmt, len); | |
1069 | break; | |
1070 | case WLAN_ACTION_DELBA: | |
1071 | ieee80211_process_delba(sdata, sta, | |
1072 | mgmt, len); | |
1073 | break; | |
1074 | default: | |
1075 | WARN_ON(1); | |
1076 | break; | |
1077 | } | |
1078 | } | |
a93e3644 | 1079 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1080 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1081 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1082 | /* | |
1083 | * So the frame isn't mgmt, but frame_control | |
1084 | * is at the right place anyway, of course, so | |
1085 | * the if statement is correct. | |
1086 | * | |
1087 | * Warn if we have other data frame types here, | |
1088 | * they must not get here. | |
1089 | */ | |
1090 | WARN_ON(hdr->frame_control & | |
1091 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1092 | WARN_ON(!(hdr->seq_ctrl & | |
1093 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1094 | /* | |
1095 | * This was a fragment of a frame, received while | |
1096 | * a block-ack session was active. That cannot be | |
1097 | * right, so terminate the session. | |
1098 | */ | |
a93e3644 | 1099 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1100 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1101 | if (sta) { |
1102 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1103 | IEEE80211_QOS_CTL_TID_MASK; | |
1104 | ||
1105 | __ieee80211_stop_rx_ba_session( | |
1106 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1107 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1108 | true); | |
344eec67 | 1109 | } |
a93e3644 | 1110 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1111 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1112 | case NL80211_IFTYPE_STATION: |
1113 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1114 | break; | |
1115 | case NL80211_IFTYPE_ADHOC: | |
1116 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1117 | break; | |
1118 | case NL80211_IFTYPE_MESH_POINT: | |
1119 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1120 | break; | |
1121 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1122 | break; | |
1123 | default: | |
1124 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1125 | break; |
1126 | } | |
36b3a628 JB |
1127 | |
1128 | kfree_skb(skb); | |
1fa57d01 JB |
1129 | } |
1130 | ||
1131 | /* then other type-dependent work */ | |
1132 | switch (sdata->vif.type) { | |
1133 | case NL80211_IFTYPE_STATION: | |
1134 | ieee80211_sta_work(sdata); | |
1135 | break; | |
1136 | case NL80211_IFTYPE_ADHOC: | |
1137 | ieee80211_ibss_work(sdata); | |
1138 | break; | |
1139 | case NL80211_IFTYPE_MESH_POINT: | |
1140 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1141 | break; | |
1142 | ieee80211_mesh_work(sdata); | |
1143 | break; | |
1144 | default: | |
1145 | break; | |
1146 | } | |
1147 | } | |
1148 | ||
04ecd257 JB |
1149 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
1150 | { | |
1151 | struct ieee80211_sub_if_data *sdata = | |
1152 | container_of(work, struct ieee80211_sub_if_data, recalc_smps); | |
1153 | ||
1154 | ieee80211_recalc_smps(sdata); | |
1155 | } | |
1fa57d01 | 1156 | |
75636525 JB |
1157 | /* |
1158 | * Helper function to initialise an interface to a specific type. | |
1159 | */ | |
1160 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1161 | enum nl80211_iftype type) |
f0706e82 | 1162 | { |
75636525 JB |
1163 | /* clear type-dependent union */ |
1164 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1165 | ||
1166 | /* and set some type-dependent values */ | |
1167 | sdata->vif.type = type; | |
2ca27bcf | 1168 | sdata->vif.p2p = false; |
60719ffd | 1169 | sdata->wdev.iftype = type; |
75636525 | 1170 | |
a621fa4d JB |
1171 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1172 | sdata->control_port_no_encrypt = false; | |
1173 | ||
b53be792 SW |
1174 | sdata->noack_map = 0; |
1175 | ||
f142c6b9 JB |
1176 | /* only monitor/p2p-device differ */ |
1177 | if (sdata->dev) { | |
1178 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; | |
1179 | sdata->dev->type = ARPHRD_ETHER; | |
1180 | } | |
75636525 | 1181 | |
35f20c14 | 1182 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1183 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
04ecd257 | 1184 | INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); |
35f20c14 | 1185 | |
75636525 | 1186 | switch (type) { |
2ca27bcf JB |
1187 | case NL80211_IFTYPE_P2P_GO: |
1188 | type = NL80211_IFTYPE_AP; | |
1189 | sdata->vif.type = type; | |
1190 | sdata->vif.p2p = true; | |
1191 | /* fall through */ | |
05c914fe | 1192 | case NL80211_IFTYPE_AP: |
d012a605 | 1193 | skb_queue_head_init(&sdata->u.ap.ps.bc_buf); |
75636525 | 1194 | INIT_LIST_HEAD(&sdata->u.ap.vlans); |
ad2d223a | 1195 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
75636525 | 1196 | break; |
2ca27bcf JB |
1197 | case NL80211_IFTYPE_P2P_CLIENT: |
1198 | type = NL80211_IFTYPE_STATION; | |
1199 | sdata->vif.type = type; | |
1200 | sdata->vif.p2p = true; | |
1201 | /* fall through */ | |
05c914fe | 1202 | case NL80211_IFTYPE_STATION: |
ad2d223a | 1203 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9c6bd790 | 1204 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1205 | break; |
46900298 | 1206 | case NL80211_IFTYPE_ADHOC: |
ad2d223a | 1207 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
46900298 JB |
1208 | ieee80211_ibss_setup_sdata(sdata); |
1209 | break; | |
05c914fe | 1210 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1211 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1212 | ieee80211_mesh_init_sdata(sdata); | |
1213 | break; | |
05c914fe | 1214 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1215 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1216 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1217 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1218 | MONITOR_FLAG_OTHER_BSS; | |
1219 | break; | |
05c914fe | 1220 | case NL80211_IFTYPE_WDS: |
ad2d223a JB |
1221 | sdata->vif.bss_conf.bssid = NULL; |
1222 | break; | |
05c914fe | 1223 | case NL80211_IFTYPE_AP_VLAN: |
ad2d223a | 1224 | break; |
98104fde | 1225 | case NL80211_IFTYPE_P2P_DEVICE: |
ad2d223a | 1226 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
f142c6b9 | 1227 | break; |
05c914fe | 1228 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1229 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1230 | BUG(); |
1231 | break; | |
1232 | } | |
1233 | ||
1234 | ieee80211_debugfs_add_netdev(sdata); | |
1235 | } | |
1236 | ||
34d4bc4d JB |
1237 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1238 | enum nl80211_iftype type) | |
1239 | { | |
1240 | struct ieee80211_local *local = sdata->local; | |
1241 | int ret, err; | |
2ca27bcf JB |
1242 | enum nl80211_iftype internal_type = type; |
1243 | bool p2p = false; | |
34d4bc4d JB |
1244 | |
1245 | ASSERT_RTNL(); | |
1246 | ||
1247 | if (!local->ops->change_interface) | |
1248 | return -EBUSY; | |
1249 | ||
1250 | switch (sdata->vif.type) { | |
1251 | case NL80211_IFTYPE_AP: | |
1252 | case NL80211_IFTYPE_STATION: | |
1253 | case NL80211_IFTYPE_ADHOC: | |
1254 | /* | |
1255 | * Could maybe also all others here? | |
1256 | * Just not sure how that interacts | |
1257 | * with the RX/config path e.g. for | |
1258 | * mesh. | |
1259 | */ | |
1260 | break; | |
1261 | default: | |
1262 | return -EBUSY; | |
1263 | } | |
1264 | ||
1265 | switch (type) { | |
1266 | case NL80211_IFTYPE_AP: | |
1267 | case NL80211_IFTYPE_STATION: | |
1268 | case NL80211_IFTYPE_ADHOC: | |
1269 | /* | |
1270 | * Could probably support everything | |
1271 | * but WDS here (WDS do_open can fail | |
1272 | * under memory pressure, which this | |
1273 | * code isn't prepared to handle). | |
1274 | */ | |
1275 | break; | |
2ca27bcf JB |
1276 | case NL80211_IFTYPE_P2P_CLIENT: |
1277 | p2p = true; | |
1278 | internal_type = NL80211_IFTYPE_STATION; | |
1279 | break; | |
1280 | case NL80211_IFTYPE_P2P_GO: | |
1281 | p2p = true; | |
1282 | internal_type = NL80211_IFTYPE_AP; | |
1283 | break; | |
34d4bc4d JB |
1284 | default: |
1285 | return -EBUSY; | |
1286 | } | |
1287 | ||
2ca27bcf | 1288 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1289 | if (ret) |
1290 | return ret; | |
1291 | ||
1292 | ieee80211_do_stop(sdata, false); | |
1293 | ||
f142c6b9 | 1294 | ieee80211_teardown_sdata(sdata); |
34d4bc4d | 1295 | |
2ca27bcf | 1296 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1297 | if (ret) |
1298 | type = sdata->vif.type; | |
1299 | ||
3a25a8c8 JB |
1300 | /* |
1301 | * Ignore return value here, there's not much we can do since | |
1302 | * the driver changed the interface type internally already. | |
1303 | * The warnings will hopefully make driver authors fix it :-) | |
1304 | */ | |
1305 | ieee80211_check_queues(sdata); | |
1306 | ||
34d4bc4d JB |
1307 | ieee80211_setup_sdata(sdata, type); |
1308 | ||
f142c6b9 | 1309 | err = ieee80211_do_open(&sdata->wdev, false); |
34d4bc4d JB |
1310 | WARN(err, "type change: do_open returned %d", err); |
1311 | ||
1312 | return ret; | |
1313 | } | |
1314 | ||
f3947e2d | 1315 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1316 | enum nl80211_iftype type) |
75636525 | 1317 | { |
34d4bc4d JB |
1318 | int ret; |
1319 | ||
f3947e2d JB |
1320 | ASSERT_RTNL(); |
1321 | ||
2ca27bcf | 1322 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1323 | return 0; |
1324 | ||
34d4bc4d JB |
1325 | if (ieee80211_sdata_running(sdata)) { |
1326 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1327 | if (ret) | |
1328 | return ret; | |
1329 | } else { | |
1330 | /* Purge and reset type-dependent state. */ | |
f142c6b9 | 1331 | ieee80211_teardown_sdata(sdata); |
34d4bc4d JB |
1332 | ieee80211_setup_sdata(sdata, type); |
1333 | } | |
75636525 JB |
1334 | |
1335 | /* reset some values that shouldn't be kept across type changes */ | |
75636525 | 1336 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1337 | if (type == NL80211_IFTYPE_STATION) |
1338 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1339 | |
1340 | return 0; | |
f0706e82 JB |
1341 | } |
1342 | ||
fa9029f8 | 1343 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
f142c6b9 | 1344 | u8 *perm_addr, enum nl80211_iftype type) |
fa9029f8 JB |
1345 | { |
1346 | struct ieee80211_sub_if_data *sdata; | |
1347 | u64 mask, start, addr, val, inc; | |
1348 | u8 *m; | |
1349 | u8 tmp_addr[ETH_ALEN]; | |
1350 | int i; | |
1351 | ||
1352 | /* default ... something at least */ | |
f142c6b9 | 1353 | memcpy(perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); |
fa9029f8 JB |
1354 | |
1355 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1356 | local->hw.wiphy->n_addresses <= 1) | |
1357 | return; | |
1358 | ||
fa9029f8 JB |
1359 | mutex_lock(&local->iflist_mtx); |
1360 | ||
1361 | switch (type) { | |
1362 | case NL80211_IFTYPE_MONITOR: | |
1363 | /* doesn't matter */ | |
1364 | break; | |
1365 | case NL80211_IFTYPE_WDS: | |
1366 | case NL80211_IFTYPE_AP_VLAN: | |
1367 | /* match up with an AP interface */ | |
1368 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1369 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1370 | continue; | |
f142c6b9 | 1371 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); |
fa9029f8 JB |
1372 | break; |
1373 | } | |
1374 | /* keep default if no AP interface present */ | |
1375 | break; | |
6d71117a JB |
1376 | case NL80211_IFTYPE_P2P_CLIENT: |
1377 | case NL80211_IFTYPE_P2P_GO: | |
1378 | if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) { | |
1379 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1380 | if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE) | |
1381 | continue; | |
1382 | if (!ieee80211_sdata_running(sdata)) | |
1383 | continue; | |
1384 | memcpy(perm_addr, sdata->vif.addr, ETH_ALEN); | |
1385 | goto out_unlock; | |
1386 | } | |
1387 | } | |
1388 | /* otherwise fall through */ | |
fa9029f8 JB |
1389 | default: |
1390 | /* assign a new address if possible -- try n_addresses first */ | |
1391 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1392 | bool used = false; | |
1393 | ||
1394 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1395 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1396 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1397 | used = true; | |
1398 | break; | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | if (!used) { | |
f142c6b9 | 1403 | memcpy(perm_addr, |
fa9029f8 JB |
1404 | local->hw.wiphy->addresses[i].addr, |
1405 | ETH_ALEN); | |
1406 | break; | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | /* try mask if available */ | |
1411 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1412 | break; | |
1413 | ||
1414 | m = local->hw.wiphy->addr_mask; | |
1415 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1416 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1417 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1418 | ||
1419 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1420 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1421 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1422 | break; |
1423 | } | |
1424 | ||
1425 | m = local->hw.wiphy->perm_addr; | |
1426 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1427 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1428 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1429 | ||
1430 | inc = 1ULL<<__ffs64(mask); | |
1431 | val = (start & mask); | |
1432 | addr = (start & ~mask) | (val & mask); | |
1433 | do { | |
1434 | bool used = false; | |
1435 | ||
1436 | tmp_addr[5] = addr >> 0*8; | |
1437 | tmp_addr[4] = addr >> 1*8; | |
1438 | tmp_addr[3] = addr >> 2*8; | |
1439 | tmp_addr[2] = addr >> 3*8; | |
1440 | tmp_addr[1] = addr >> 4*8; | |
1441 | tmp_addr[0] = addr >> 5*8; | |
1442 | ||
1443 | val += inc; | |
1444 | ||
1445 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1446 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1447 | ETH_ALEN) == 0) { | |
1448 | used = true; | |
1449 | break; | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | if (!used) { | |
f142c6b9 | 1454 | memcpy(perm_addr, tmp_addr, ETH_ALEN); |
fa9029f8 JB |
1455 | break; |
1456 | } | |
1457 | addr = (start & ~mask) | (val & mask); | |
1458 | } while (addr != start); | |
1459 | ||
1460 | break; | |
1461 | } | |
1462 | ||
6d71117a | 1463 | out_unlock: |
fa9029f8 JB |
1464 | mutex_unlock(&local->iflist_mtx); |
1465 | } | |
1466 | ||
97f97b1f JB |
1467 | static void ieee80211_cleanup_sdata_stas_wk(struct work_struct *wk) |
1468 | { | |
1469 | struct ieee80211_sub_if_data *sdata; | |
1470 | ||
1471 | sdata = container_of(wk, struct ieee80211_sub_if_data, cleanup_stations_wk); | |
1472 | ||
1473 | ieee80211_cleanup_sdata_stas(sdata); | |
1474 | } | |
1475 | ||
3e122be0 | 1476 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1477 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1478 | struct vif_params *params) |
f0706e82 | 1479 | { |
f142c6b9 | 1480 | struct net_device *ndev = NULL; |
f0706e82 | 1481 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1482 | int ret, i; |
ded81f6b | 1483 | int txqs = 1; |
f0706e82 JB |
1484 | |
1485 | ASSERT_RTNL(); | |
75636525 | 1486 | |
f142c6b9 JB |
1487 | if (type == NL80211_IFTYPE_P2P_DEVICE) { |
1488 | struct wireless_dev *wdev; | |
1489 | ||
1490 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, | |
1491 | GFP_KERNEL); | |
1492 | if (!sdata) | |
1493 | return -ENOMEM; | |
1494 | wdev = &sdata->wdev; | |
1495 | ||
1496 | sdata->dev = NULL; | |
1497 | strlcpy(sdata->name, name, IFNAMSIZ); | |
1498 | ieee80211_assign_perm_addr(local, wdev->address, type); | |
1499 | memcpy(sdata->vif.addr, wdev->address, ETH_ALEN); | |
1500 | } else { | |
1501 | if (local->hw.queues >= IEEE80211_NUM_ACS) | |
1502 | txqs = IEEE80211_NUM_ACS; | |
1503 | ||
1504 | ndev = alloc_netdev_mqs(sizeof(*sdata) + | |
1505 | local->hw.vif_data_size, | |
1506 | name, ieee80211_if_setup, txqs, 1); | |
1507 | if (!ndev) | |
1508 | return -ENOMEM; | |
1509 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); | |
1510 | ||
1511 | ndev->needed_headroom = local->tx_headroom + | |
1512 | 4*6 /* four MAC addresses */ | |
1513 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1514 | + 6 /* mesh */ | |
1515 | + 8 /* rfc1042/bridge tunnel */ | |
1516 | - ETH_HLEN /* ethernet hard_header_len */ | |
1517 | + IEEE80211_ENCRYPT_HEADROOM; | |
1518 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1519 | ||
1520 | ret = dev_alloc_name(ndev, ndev->name); | |
1521 | if (ret < 0) { | |
1522 | free_netdev(ndev); | |
1523 | return ret; | |
1524 | } | |
1525 | ||
1526 | ieee80211_assign_perm_addr(local, ndev->perm_addr, type); | |
1527 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
1528 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); | |
1529 | ||
1530 | /* don't use IEEE80211_DEV_TO_SUB_IF -- it checks too much */ | |
1531 | sdata = netdev_priv(ndev); | |
1532 | ndev->ieee80211_ptr = &sdata->wdev; | |
1533 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); | |
1534 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
1535 | ||
1536 | sdata->dev = ndev; | |
1537 | } | |
75636525 JB |
1538 | |
1539 | /* initialise type-independent data */ | |
f0706e82 | 1540 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1541 | sdata->local = local; |
75636525 JB |
1542 | |
1543 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1544 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1545 | ||
1546 | INIT_LIST_HEAD(&sdata->key_list); | |
1547 | ||
97f97b1f JB |
1548 | spin_lock_init(&sdata->cleanup_stations_lock); |
1549 | INIT_LIST_HEAD(&sdata->cleanup_stations); | |
1550 | INIT_WORK(&sdata->cleanup_stations_wk, ieee80211_cleanup_sdata_stas_wk); | |
164eb02d SW |
1551 | INIT_DELAYED_WORK(&sdata->dfs_cac_timer_work, |
1552 | ieee80211_dfs_cac_timer_work); | |
97f97b1f | 1553 | |
37eb0b16 JM |
1554 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1555 | struct ieee80211_supported_band *sband; | |
1556 | sband = local->hw.wiphy->bands[i]; | |
1557 | sdata->rc_rateidx_mask[i] = | |
1558 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1559 | if (sband) |
1560 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1561 | sband->ht_cap.mcs.rx_mask, | |
1562 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1563 | else | |
1564 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1565 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1566 | } |
75636525 | 1567 | |
3a25a8c8 JB |
1568 | ieee80211_set_default_queues(sdata); |
1569 | ||
1ea6f9c0 JB |
1570 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
1571 | sdata->user_power_level = local->user_power_level; | |
1572 | ||
75636525 JB |
1573 | /* setup type-dependent data */ |
1574 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1575 | |
f142c6b9 JB |
1576 | if (ndev) { |
1577 | if (params) { | |
1578 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1579 | if (type == NL80211_IFTYPE_STATION) | |
1580 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1581 | } | |
9bc383de | 1582 | |
f142c6b9 | 1583 | ndev->features |= local->hw.netdev_features; |
72d78728 | 1584 | |
f142c6b9 JB |
1585 | ret = register_netdevice(ndev); |
1586 | if (ret) { | |
1587 | free_netdev(ndev); | |
1588 | return ret; | |
1589 | } | |
1590 | } | |
f0706e82 | 1591 | |
c771c9d8 | 1592 | mutex_lock(&local->iflist_mtx); |
79010420 | 1593 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1594 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1595 | |
84efbb84 JB |
1596 | if (new_wdev) |
1597 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1598 | |
f0706e82 | 1599 | return 0; |
f0706e82 JB |
1600 | } |
1601 | ||
f698d856 | 1602 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1603 | { |
f0706e82 | 1604 | ASSERT_RTNL(); |
11a843b7 | 1605 | |
c771c9d8 | 1606 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1607 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1608 | mutex_unlock(&sdata->local->iflist_mtx); |
1609 | ||
75636525 | 1610 | synchronize_rcu(); |
f142c6b9 JB |
1611 | |
1612 | if (sdata->dev) { | |
1613 | unregister_netdevice(sdata->dev); | |
1614 | } else { | |
1615 | cfg80211_unregister_wdev(&sdata->wdev); | |
1616 | kfree(sdata); | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata) | |
1621 | { | |
1622 | if (WARN_ON_ONCE(!test_bit(SDATA_STATE_RUNNING, &sdata->state))) | |
1623 | return; | |
1624 | ieee80211_do_stop(sdata, true); | |
1625 | ieee80211_teardown_sdata(sdata); | |
f0706e82 JB |
1626 | } |
1627 | ||
75636525 JB |
1628 | /* |
1629 | * Remove all interfaces, may only be called at hardware unregistration | |
1630 | * time because it doesn't do RCU-safe list removals. | |
1631 | */ | |
1632 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1633 | { |
75636525 | 1634 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1635 | LIST_HEAD(unreg_list); |
f142c6b9 | 1636 | LIST_HEAD(wdev_list); |
f0706e82 JB |
1637 | |
1638 | ASSERT_RTNL(); | |
1639 | ||
efe117ab | 1640 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1641 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1642 | list_del(&sdata->list); | |
c771c9d8 | 1643 | |
f142c6b9 JB |
1644 | if (sdata->dev) |
1645 | unregister_netdevice_queue(sdata->dev, &unreg_list); | |
1646 | else | |
1647 | list_add(&sdata->list, &wdev_list); | |
f0706e82 | 1648 | } |
efe117ab ED |
1649 | mutex_unlock(&local->iflist_mtx); |
1650 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1651 | list_del(&unreg_list); |
f142c6b9 JB |
1652 | |
1653 | list_for_each_entry_safe(sdata, tmp, &wdev_list, list) { | |
1654 | list_del(&sdata->list); | |
1655 | cfg80211_unregister_wdev(&sdata->wdev); | |
1656 | kfree(sdata); | |
1657 | } | |
f0706e82 | 1658 | } |
5cff20e6 | 1659 | |
47846c9b JB |
1660 | static int netdev_notify(struct notifier_block *nb, |
1661 | unsigned long state, | |
1662 | void *ndev) | |
1663 | { | |
1664 | struct net_device *dev = ndev; | |
1665 | struct ieee80211_sub_if_data *sdata; | |
1666 | ||
1667 | if (state != NETDEV_CHANGENAME) | |
1668 | return 0; | |
1669 | ||
1670 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1671 | return 0; | |
1672 | ||
1673 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1674 | return 0; | |
1675 | ||
1676 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1677 | ||
2f5265e6 | 1678 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1679 | |
1680 | ieee80211_debugfs_rename_netdev(sdata); | |
1681 | return 0; | |
1682 | } | |
1683 | ||
1684 | static struct notifier_block mac80211_netdev_notifier = { | |
1685 | .notifier_call = netdev_notify, | |
1686 | }; | |
1687 | ||
1688 | int ieee80211_iface_init(void) | |
1689 | { | |
1690 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1691 | } | |
1692 | ||
1693 | void ieee80211_iface_exit(void) | |
1694 | { | |
1695 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1696 | } |