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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 | ||
45 | ||
cc45ae54 JB |
46 | static u32 ieee80211_idle_off(struct ieee80211_local *local, |
47 | const char *reason) | |
48 | { | |
49 | if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE)) | |
50 | return 0; | |
51 | ||
52 | local->hw.conf.flags &= ~IEEE80211_CONF_IDLE; | |
53 | return IEEE80211_CONF_CHANGE_IDLE; | |
54 | } | |
55 | ||
56 | static u32 ieee80211_idle_on(struct ieee80211_local *local) | |
57 | { | |
58 | if (local->hw.conf.flags & IEEE80211_CONF_IDLE) | |
59 | return 0; | |
60 | ||
61 | drv_flush(local, false); | |
62 | ||
63 | local->hw.conf.flags |= IEEE80211_CONF_IDLE; | |
64 | return IEEE80211_CONF_CHANGE_IDLE; | |
65 | } | |
66 | ||
67 | static u32 __ieee80211_recalc_idle(struct ieee80211_local *local) | |
68 | { | |
69 | struct ieee80211_sub_if_data *sdata; | |
70 | int count = 0; | |
71 | bool working = false, scanning = false; | |
72 | unsigned int led_trig_start = 0, led_trig_stop = 0; | |
73 | struct ieee80211_roc_work *roc; | |
74 | ||
75 | #ifdef CONFIG_PROVE_LOCKING | |
76 | WARN_ON(debug_locks && !lockdep_rtnl_is_held() && | |
77 | !lockdep_is_held(&local->iflist_mtx)); | |
78 | #endif | |
79 | lockdep_assert_held(&local->mtx); | |
80 | ||
81 | list_for_each_entry(sdata, &local->interfaces, list) { | |
82 | if (!ieee80211_sdata_running(sdata)) { | |
83 | sdata->vif.bss_conf.idle = true; | |
84 | continue; | |
85 | } | |
86 | ||
87 | sdata->old_idle = sdata->vif.bss_conf.idle; | |
88 | ||
89 | /* do not count disabled managed interfaces */ | |
90 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
91 | !sdata->u.mgd.associated && | |
92 | !sdata->u.mgd.auth_data && | |
93 | !sdata->u.mgd.assoc_data) { | |
94 | sdata->vif.bss_conf.idle = true; | |
95 | continue; | |
96 | } | |
97 | /* do not count unused IBSS interfaces */ | |
98 | if (sdata->vif.type == NL80211_IFTYPE_ADHOC && | |
99 | !sdata->u.ibss.ssid_len) { | |
100 | sdata->vif.bss_conf.idle = true; | |
101 | continue; | |
102 | } | |
103 | /* count everything else */ | |
104 | sdata->vif.bss_conf.idle = false; | |
105 | count++; | |
106 | } | |
107 | ||
108 | if (!local->ops->remain_on_channel) { | |
109 | list_for_each_entry(roc, &local->roc_list, list) { | |
110 | working = true; | |
111 | roc->sdata->vif.bss_conf.idle = false; | |
112 | } | |
113 | } | |
114 | ||
e2fd5dbc JB |
115 | sdata = rcu_dereference_protected(local->scan_sdata, |
116 | lockdep_is_held(&local->mtx)); | |
117 | if (sdata && !(local->hw.flags & IEEE80211_HW_SCAN_WHILE_IDLE)) { | |
cc45ae54 | 118 | scanning = true; |
e2fd5dbc | 119 | sdata->vif.bss_conf.idle = false; |
cc45ae54 JB |
120 | } |
121 | ||
122 | list_for_each_entry(sdata, &local->interfaces, list) { | |
123 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR || | |
124 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
125 | continue; | |
126 | if (sdata->old_idle == sdata->vif.bss_conf.idle) | |
127 | continue; | |
128 | if (!ieee80211_sdata_running(sdata)) | |
129 | continue; | |
130 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IDLE); | |
131 | } | |
132 | ||
133 | if (working || scanning) | |
134 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
135 | else | |
136 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_WORK; | |
137 | ||
138 | if (count) | |
139 | led_trig_start |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
140 | else | |
141 | led_trig_stop |= IEEE80211_TPT_LEDTRIG_FL_CONNECTED; | |
142 | ||
143 | ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop); | |
144 | ||
145 | if (working) | |
146 | return ieee80211_idle_off(local, "working"); | |
147 | if (scanning) | |
148 | return ieee80211_idle_off(local, "scanning"); | |
149 | if (!count) | |
150 | return ieee80211_idle_on(local); | |
151 | else | |
152 | return ieee80211_idle_off(local, "in use"); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | void ieee80211_recalc_idle(struct ieee80211_local *local) | |
158 | { | |
159 | u32 chg; | |
160 | ||
161 | mutex_lock(&local->iflist_mtx); | |
162 | chg = __ieee80211_recalc_idle(local); | |
163 | mutex_unlock(&local->iflist_mtx); | |
164 | if (chg) | |
165 | ieee80211_hw_config(local, chg); | |
166 | } | |
167 | ||
0d143fe1 JB |
168 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
169 | { | |
170 | int meshhdrlen; | |
171 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
172 | ||
173 | meshhdrlen = (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) ? 5 : 0; | |
174 | ||
175 | /* FIX: what would be proper limits for MTU? | |
176 | * This interface uses 802.3 frames. */ | |
177 | if (new_mtu < 256 || | |
178 | new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { | |
179 | return -EINVAL; | |
180 | } | |
181 | ||
0d143fe1 JB |
182 | dev->mtu = new_mtu; |
183 | return 0; | |
184 | } | |
185 | ||
47846c9b JB |
186 | static int ieee80211_change_mac(struct net_device *dev, void *addr) |
187 | { | |
188 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
fc5f7577 | 189 | struct sockaddr *sa = addr; |
47846c9b JB |
190 | int ret; |
191 | ||
9607e6b6 | 192 | if (ieee80211_sdata_running(sdata)) |
47846c9b JB |
193 | return -EBUSY; |
194 | ||
fc5f7577 | 195 | ret = eth_mac_addr(dev, sa); |
47846c9b JB |
196 | |
197 | if (ret == 0) | |
fc5f7577 | 198 | memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN); |
47846c9b JB |
199 | |
200 | return ret; | |
201 | } | |
202 | ||
0d143fe1 JB |
203 | static inline int identical_mac_addr_allowed(int type1, int type2) |
204 | { | |
205 | return type1 == NL80211_IFTYPE_MONITOR || | |
206 | type2 == NL80211_IFTYPE_MONITOR || | |
207 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_WDS) || | |
208 | (type1 == NL80211_IFTYPE_WDS && | |
209 | (type2 == NL80211_IFTYPE_WDS || | |
210 | type2 == NL80211_IFTYPE_AP)) || | |
211 | (type1 == NL80211_IFTYPE_AP && type2 == NL80211_IFTYPE_AP_VLAN) || | |
212 | (type1 == NL80211_IFTYPE_AP_VLAN && | |
213 | (type2 == NL80211_IFTYPE_AP || | |
214 | type2 == NL80211_IFTYPE_AP_VLAN)); | |
215 | } | |
216 | ||
87490f6d JB |
217 | static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, |
218 | enum nl80211_iftype iftype) | |
0d143fe1 | 219 | { |
b4a4bf5d | 220 | struct ieee80211_local *local = sdata->local; |
87490f6d | 221 | struct ieee80211_sub_if_data *nsdata; |
0d143fe1 | 222 | |
87490f6d | 223 | ASSERT_RTNL(); |
0d143fe1 JB |
224 | |
225 | /* we hold the RTNL here so can safely walk the list */ | |
226 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
371a255e | 227 | if (nsdata != sdata && ieee80211_sdata_running(nsdata)) { |
0d143fe1 JB |
228 | /* |
229 | * Allow only a single IBSS interface to be up at any | |
230 | * time. This is restricted because beacon distribution | |
231 | * cannot work properly if both are in the same IBSS. | |
232 | * | |
233 | * To remove this restriction we'd have to disallow them | |
234 | * from setting the same SSID on different IBSS interfaces | |
235 | * belonging to the same hardware. Then, however, we're | |
236 | * faced with having to adopt two different TSF timers... | |
237 | */ | |
87490f6d | 238 | if (iftype == NL80211_IFTYPE_ADHOC && |
0d143fe1 JB |
239 | nsdata->vif.type == NL80211_IFTYPE_ADHOC) |
240 | return -EBUSY; | |
241 | ||
242 | /* | |
243 | * The remaining checks are only performed for interfaces | |
244 | * with the same MAC address. | |
245 | */ | |
371a255e JB |
246 | if (!ether_addr_equal(sdata->vif.addr, |
247 | nsdata->vif.addr)) | |
0d143fe1 JB |
248 | continue; |
249 | ||
250 | /* | |
251 | * check whether it may have the same address | |
252 | */ | |
87490f6d | 253 | if (!identical_mac_addr_allowed(iftype, |
0d143fe1 JB |
254 | nsdata->vif.type)) |
255 | return -ENOTUNIQ; | |
256 | ||
257 | /* | |
258 | * can only add VLANs to enabled APs | |
259 | */ | |
87490f6d | 260 | if (iftype == NL80211_IFTYPE_AP_VLAN && |
0d143fe1 JB |
261 | nsdata->vif.type == NL80211_IFTYPE_AP) |
262 | sdata->bss = &nsdata->u.ap; | |
263 | } | |
264 | } | |
265 | ||
87490f6d JB |
266 | return 0; |
267 | } | |
268 | ||
3a25a8c8 JB |
269 | static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata) |
270 | { | |
271 | int n_queues = sdata->local->hw.queues; | |
272 | int i; | |
273 | ||
274 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
275 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] == | |
276 | IEEE80211_INVAL_HW_QUEUE)) | |
277 | return -EINVAL; | |
278 | if (WARN_ON_ONCE(sdata->vif.hw_queue[i] >= | |
279 | n_queues)) | |
280 | return -EINVAL; | |
281 | } | |
282 | ||
bb3e10fb LC |
283 | if ((sdata->vif.type != NL80211_IFTYPE_AP) || |
284 | !(sdata->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)) { | |
3a25a8c8 JB |
285 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; |
286 | return 0; | |
287 | } | |
288 | ||
289 | if (WARN_ON_ONCE(sdata->vif.cab_queue == IEEE80211_INVAL_HW_QUEUE)) | |
290 | return -EINVAL; | |
291 | ||
292 | if (WARN_ON_ONCE(sdata->vif.cab_queue >= n_queues)) | |
293 | return -EINVAL; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
85416a4f CL |
298 | void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, |
299 | const int offset) | |
300 | { | |
301 | struct ieee80211_local *local = sdata->local; | |
302 | u32 flags = sdata->u.mntr_flags; | |
303 | ||
304 | #define ADJUST(_f, _s) do { \ | |
305 | if (flags & MONITOR_FLAG_##_f) \ | |
306 | local->fif_##_s += offset; \ | |
307 | } while (0) | |
308 | ||
309 | ADJUST(FCSFAIL, fcsfail); | |
310 | ADJUST(PLCPFAIL, plcpfail); | |
311 | ADJUST(CONTROL, control); | |
312 | ADJUST(CONTROL, pspoll); | |
313 | ADJUST(OTHER_BSS, other_bss); | |
314 | ||
315 | #undef ADJUST | |
316 | } | |
317 | ||
3a25a8c8 JB |
318 | static void ieee80211_set_default_queues(struct ieee80211_sub_if_data *sdata) |
319 | { | |
320 | struct ieee80211_local *local = sdata->local; | |
321 | int i; | |
322 | ||
323 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { | |
324 | if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) | |
325 | sdata->vif.hw_queue[i] = IEEE80211_INVAL_HW_QUEUE; | |
a9d3c05c | 326 | else if (local->hw.queues >= IEEE80211_NUM_ACS) |
3a25a8c8 | 327 | sdata->vif.hw_queue[i] = i; |
a9d3c05c JB |
328 | else |
329 | sdata->vif.hw_queue[i] = 0; | |
3a25a8c8 JB |
330 | } |
331 | sdata->vif.cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
332 | } | |
333 | ||
075e0847 | 334 | static int ieee80211_add_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
335 | { |
336 | struct ieee80211_sub_if_data *sdata; | |
685fb72b | 337 | int ret = 0; |
4b6f1dd6 JB |
338 | |
339 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
340 | return 0; | |
341 | ||
685fb72b JB |
342 | mutex_lock(&local->iflist_mtx); |
343 | ||
4b6f1dd6 | 344 | if (local->monitor_sdata) |
685fb72b | 345 | goto out_unlock; |
4b6f1dd6 JB |
346 | |
347 | sdata = kzalloc(sizeof(*sdata) + local->hw.vif_data_size, GFP_KERNEL); | |
685fb72b JB |
348 | if (!sdata) { |
349 | ret = -ENOMEM; | |
350 | goto out_unlock; | |
351 | } | |
4b6f1dd6 JB |
352 | |
353 | /* set up data */ | |
354 | sdata->local = local; | |
355 | sdata->vif.type = NL80211_IFTYPE_MONITOR; | |
356 | snprintf(sdata->name, IFNAMSIZ, "%s-monitor", | |
357 | wiphy_name(local->hw.wiphy)); | |
358 | ||
3a25a8c8 JB |
359 | ieee80211_set_default_queues(sdata); |
360 | ||
4b6f1dd6 JB |
361 | ret = drv_add_interface(local, sdata); |
362 | if (WARN_ON(ret)) { | |
363 | /* ok .. stupid driver, it asked for this! */ | |
364 | kfree(sdata); | |
685fb72b | 365 | goto out_unlock; |
4b6f1dd6 JB |
366 | } |
367 | ||
3a25a8c8 JB |
368 | ret = ieee80211_check_queues(sdata); |
369 | if (ret) { | |
370 | kfree(sdata); | |
685fb72b | 371 | goto out_unlock; |
3a25a8c8 JB |
372 | } |
373 | ||
4b6f1dd6 | 374 | rcu_assign_pointer(local->monitor_sdata, sdata); |
685fb72b JB |
375 | out_unlock: |
376 | mutex_unlock(&local->iflist_mtx); | |
377 | return ret; | |
4b6f1dd6 JB |
378 | } |
379 | ||
075e0847 | 380 | static void ieee80211_del_virtual_monitor(struct ieee80211_local *local) |
4b6f1dd6 JB |
381 | { |
382 | struct ieee80211_sub_if_data *sdata; | |
383 | ||
384 | if (!(local->hw.flags & IEEE80211_HW_WANT_MONITOR_VIF)) | |
385 | return; | |
386 | ||
685fb72b | 387 | mutex_lock(&local->iflist_mtx); |
4b6f1dd6 | 388 | |
685fb72b JB |
389 | sdata = rcu_dereference_protected(local->monitor_sdata, |
390 | lockdep_is_held(&local->iflist_mtx)); | |
4b6f1dd6 | 391 | if (!sdata) |
685fb72b | 392 | goto out_unlock; |
4b6f1dd6 JB |
393 | |
394 | rcu_assign_pointer(local->monitor_sdata, NULL); | |
395 | synchronize_net(); | |
396 | ||
397 | drv_remove_interface(local, sdata); | |
398 | ||
399 | kfree(sdata); | |
685fb72b JB |
400 | out_unlock: |
401 | mutex_unlock(&local->iflist_mtx); | |
4b6f1dd6 JB |
402 | } |
403 | ||
34d4bc4d JB |
404 | /* |
405 | * NOTE: Be very careful when changing this function, it must NOT return | |
406 | * an error on interface type changes that have been pre-checked, so most | |
407 | * checks should be in ieee80211_check_concurrent_iface. | |
408 | */ | |
409 | static int ieee80211_do_open(struct net_device *dev, bool coming_up) | |
87490f6d JB |
410 | { |
411 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
412 | struct ieee80211_local *local = sdata->local; | |
413 | struct sta_info *sta; | |
414 | u32 changed = 0; | |
415 | int res; | |
416 | u32 hw_reconf_flags = 0; | |
417 | ||
0d143fe1 JB |
418 | switch (sdata->vif.type) { |
419 | case NL80211_IFTYPE_WDS: | |
420 | if (!is_valid_ether_addr(sdata->u.wds.remote_addr)) | |
421 | return -ENOLINK; | |
422 | break; | |
665c93a9 JB |
423 | case NL80211_IFTYPE_AP_VLAN: { |
424 | struct ieee80211_sub_if_data *master; | |
425 | ||
0d143fe1 JB |
426 | if (!sdata->bss) |
427 | return -ENOLINK; | |
665c93a9 | 428 | |
0d143fe1 | 429 | list_add(&sdata->u.vlan.list, &sdata->bss->vlans); |
665c93a9 JB |
430 | |
431 | master = container_of(sdata->bss, | |
432 | struct ieee80211_sub_if_data, u.ap); | |
433 | sdata->control_port_protocol = | |
434 | master->control_port_protocol; | |
435 | sdata->control_port_no_encrypt = | |
436 | master->control_port_no_encrypt; | |
0d143fe1 | 437 | break; |
665c93a9 | 438 | } |
0d143fe1 JB |
439 | case NL80211_IFTYPE_AP: |
440 | sdata->bss = &sdata->u.ap; | |
441 | break; | |
442 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 JB |
443 | case NL80211_IFTYPE_STATION: |
444 | case NL80211_IFTYPE_MONITOR: | |
445 | case NL80211_IFTYPE_ADHOC: | |
446 | /* no special treatment */ | |
447 | break; | |
448 | case NL80211_IFTYPE_UNSPECIFIED: | |
2e161f78 | 449 | case NUM_NL80211_IFTYPES: |
2ca27bcf JB |
450 | case NL80211_IFTYPE_P2P_CLIENT: |
451 | case NL80211_IFTYPE_P2P_GO: | |
0d143fe1 JB |
452 | /* cannot happen */ |
453 | WARN_ON(1); | |
454 | break; | |
455 | } | |
456 | ||
457 | if (local->open_count == 0) { | |
24487981 | 458 | res = drv_start(local); |
0d143fe1 JB |
459 | if (res) |
460 | goto err_del_bss; | |
4e6cbfd0 JL |
461 | if (local->ops->napi_poll) |
462 | napi_enable(&local->napi); | |
e8975581 JB |
463 | /* we're brought up, everything changes */ |
464 | hw_reconf_flags = ~0; | |
1f87f7d3 | 465 | ieee80211_led_radio(local, true); |
67408c8c JB |
466 | ieee80211_mod_tpt_led_trig(local, |
467 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
468 | } |
469 | ||
470 | /* | |
bf533e0b JB |
471 | * Copy the hopefully now-present MAC address to |
472 | * this interface, if it has the special null one. | |
0d143fe1 | 473 | */ |
bf533e0b JB |
474 | if (is_zero_ether_addr(dev->dev_addr)) { |
475 | memcpy(dev->dev_addr, | |
476 | local->hw.wiphy->perm_addr, | |
477 | ETH_ALEN); | |
478 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
479 | ||
480 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
481 | res = -EADDRNOTAVAIL; |
482 | goto err_stop; | |
0adc23f5 | 483 | } |
0d143fe1 JB |
484 | } |
485 | ||
0d143fe1 JB |
486 | switch (sdata->vif.type) { |
487 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
488 | /* no need to tell driver, but set carrier */ |
489 | if (rtnl_dereference(sdata->bss->beacon)) | |
490 | netif_carrier_on(dev); | |
491 | else | |
492 | netif_carrier_off(dev); | |
0d143fe1 JB |
493 | break; |
494 | case NL80211_IFTYPE_MONITOR: | |
495 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
496 | local->cooked_mntrs++; | |
497 | break; | |
498 | } | |
499 | ||
075e0847 JB |
500 | if (local->monitors == 0 && local->open_count == 0) { |
501 | res = ieee80211_add_virtual_monitor(local); | |
502 | if (res) | |
503 | goto err_stop; | |
504 | } | |
505 | ||
0d143fe1 JB |
506 | /* must be before the call to ieee80211_configure_filter */ |
507 | local->monitors++; | |
e8975581 | 508 | if (local->monitors == 1) { |
0869aea0 JB |
509 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
510 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 511 | } |
0d143fe1 | 512 | |
85416a4f | 513 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 514 | ieee80211_configure_filter(local); |
53e9b1de DG |
515 | |
516 | netif_carrier_on(dev); | |
0d143fe1 | 517 | break; |
0d143fe1 | 518 | default: |
34d4bc4d | 519 | if (coming_up) { |
075e0847 JB |
520 | ieee80211_del_virtual_monitor(local); |
521 | ||
7b7eab6f | 522 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
523 | if (res) |
524 | goto err_stop; | |
3a25a8c8 JB |
525 | res = ieee80211_check_queues(sdata); |
526 | if (res) | |
527 | goto err_del_interface; | |
34d4bc4d | 528 | } |
0d143fe1 | 529 | |
29cbe68c | 530 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 531 | local->fif_pspoll++; |
7be5086d | 532 | local->fif_probe_req++; |
e3b90ca2 | 533 | |
e3b90ca2 | 534 | ieee80211_configure_filter(local); |
7be5086d JB |
535 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
536 | local->fif_probe_req++; | |
a3c9aa51 | 537 | } |
e3b90ca2 | 538 | |
0d143fe1 JB |
539 | changed |= ieee80211_reset_erp_info(sdata); |
540 | ieee80211_bss_info_change_notify(sdata, changed); | |
0d143fe1 | 541 | |
c405c629 JB |
542 | switch (sdata->vif.type) { |
543 | case NL80211_IFTYPE_STATION: | |
544 | case NL80211_IFTYPE_ADHOC: | |
545 | case NL80211_IFTYPE_AP: | |
546 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 547 | netif_carrier_off(dev); |
c405c629 | 548 | break; |
1411af15 JB |
549 | case NL80211_IFTYPE_WDS: |
550 | break; | |
c405c629 | 551 | default: |
0d143fe1 | 552 | netif_carrier_on(dev); |
c405c629 | 553 | } |
59034591 EP |
554 | |
555 | /* | |
556 | * set default queue parameters so drivers don't | |
557 | * need to initialise the hardware if the hardware | |
558 | * doesn't start up with sane defaults | |
559 | */ | |
3abead59 | 560 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
561 | } |
562 | ||
2d2080c3 JB |
563 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
564 | ||
0d143fe1 JB |
565 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
566 | /* Create STA entry for the WDS peer */ | |
567 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
568 | GFP_KERNEL); | |
569 | if (!sta) { | |
570 | res = -ENOMEM; | |
571 | goto err_del_interface; | |
572 | } | |
573 | ||
83d5cc01 JB |
574 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
575 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
576 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
577 | |
578 | res = sta_info_insert(sta); | |
579 | if (res) { | |
580 | /* STA has been freed */ | |
581 | goto err_del_interface; | |
582 | } | |
1be7fe8d BJ |
583 | |
584 | rate_control_rate_init(sta); | |
1411af15 | 585 | netif_carrier_on(dev); |
0d143fe1 JB |
586 | } |
587 | ||
0d143fe1 JB |
588 | /* |
589 | * set_multicast_list will be invoked by the networking core | |
590 | * which will check whether any increments here were done in | |
591 | * error and sync them down to the hardware as filter flags. | |
592 | */ | |
593 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
594 | atomic_inc(&local->iff_allmultis); | |
595 | ||
596 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
597 | atomic_inc(&local->iff_promiscs); | |
598 | ||
7da7cc1d | 599 | mutex_lock(&local->mtx); |
5cff20e6 | 600 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 601 | mutex_unlock(&local->mtx); |
5cff20e6 | 602 | |
34d4bc4d JB |
603 | if (coming_up) |
604 | local->open_count++; | |
605 | ||
59034591 | 606 | if (hw_reconf_flags) |
e8975581 | 607 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 608 | |
10f644a4 | 609 | ieee80211_recalc_ps(local, -1); |
965bedad | 610 | |
8a5b33f5 | 611 | netif_tx_start_all_queues(dev); |
0d143fe1 JB |
612 | |
613 | return 0; | |
614 | err_del_interface: | |
7b7eab6f | 615 | drv_remove_interface(local, sdata); |
0d143fe1 | 616 | err_stop: |
24487981 JB |
617 | if (!local->open_count) |
618 | drv_stop(local); | |
0d143fe1 JB |
619 | err_del_bss: |
620 | sdata->bss = NULL; | |
621 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
622 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 623 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 624 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
625 | return res; |
626 | } | |
627 | ||
34d4bc4d | 628 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
629 | { |
630 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
631 | int err; |
632 | ||
633 | /* fail early if user set an invalid address */ | |
2fcf2824 | 634 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
635 | return -EADDRNOTAVAIL; |
636 | ||
637 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
638 | if (err) | |
639 | return err; | |
640 | ||
641 | return ieee80211_do_open(dev, true); | |
642 | } | |
643 | ||
644 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
645 | bool going_down) | |
646 | { | |
0d143fe1 | 647 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
648 | unsigned long flags; |
649 | struct sk_buff *skb, *tmp; | |
e8975581 | 650 | u32 hw_reconf_flags = 0; |
5061b0c2 | 651 | int i; |
2cf22b89 | 652 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 653 | |
c29acf20 RM |
654 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
655 | ||
e2fd5dbc | 656 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
657 | ieee80211_scan_cancel(local); |
658 | ||
0d143fe1 JB |
659 | /* |
660 | * Stop TX on this interface first. | |
661 | */ | |
34d4bc4d | 662 | netif_tx_stop_all_queues(sdata->dev); |
0d143fe1 | 663 | |
2eb278e0 | 664 | ieee80211_roc_purge(sdata); |
af6b6374 | 665 | |
0d143fe1 JB |
666 | /* |
667 | * Remove all stations associated with this interface. | |
668 | * | |
669 | * This must be done before calling ops->remove_interface() | |
670 | * because otherwise we can later invoke ops->sta_notify() | |
671 | * whenever the STAs are removed, and that invalidates driver | |
672 | * assumptions about always getting a vif pointer that is valid | |
673 | * (because if we remove a STA after ops->remove_interface() | |
674 | * the driver will have removed the vif info already!) | |
675 | * | |
b9dcf712 JB |
676 | * This is relevant only in AP, WDS and mesh modes, since in |
677 | * all other modes we've already removed all stations when | |
678 | * disconnecting etc. | |
0d143fe1 JB |
679 | */ |
680 | sta_info_flush(local, sdata); | |
681 | ||
682 | /* | |
683 | * Don't count this interface for promisc/allmulti while it | |
684 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
685 | * on the master interface which will sync these down to the | |
686 | * hardware as filter flags. | |
687 | */ | |
688 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
689 | atomic_dec(&local->iff_allmultis); | |
690 | ||
691 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
692 | atomic_dec(&local->iff_promiscs); | |
693 | ||
7be5086d | 694 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 695 | local->fif_pspoll--; |
7be5086d JB |
696 | local->fif_probe_req--; |
697 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
698 | local->fif_probe_req--; | |
699 | } | |
e3b90ca2 | 700 | |
34d4bc4d | 701 | netif_addr_lock_bh(sdata->dev); |
3b8d81e0 | 702 | spin_lock_bh(&local->filter_lock); |
34d4bc4d JB |
703 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
704 | sdata->dev->addr_len); | |
3b8d81e0 | 705 | spin_unlock_bh(&local->filter_lock); |
34d4bc4d | 706 | netif_addr_unlock_bh(sdata->dev); |
3b8d81e0 | 707 | |
3ac64bee JB |
708 | ieee80211_configure_filter(local); |
709 | ||
7cbf0ba5 VN |
710 | del_timer_sync(&local->dynamic_ps_timer); |
711 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
712 | |
713 | /* APs need special treatment */ | |
714 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 715 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
716 | struct beacon_data *old_beacon = |
717 | rtnl_dereference(sdata->u.ap.beacon); | |
02945821 AN |
718 | struct sk_buff *old_probe_resp = |
719 | rtnl_dereference(sdata->u.ap.probe_resp); | |
0d143fe1 | 720 | |
b9dcf712 JB |
721 | /* sdata_running will return false, so this will disable */ |
722 | ieee80211_bss_info_change_notify(sdata, | |
723 | BSS_CHANGED_BEACON_ENABLED); | |
724 | ||
02945821 | 725 | /* remove beacon and probe response */ |
a9b3cd7f | 726 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 727 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
728 | synchronize_rcu(); |
729 | kfree(old_beacon); | |
5e2e05de | 730 | kfree_skb(old_probe_resp); |
0d143fe1 JB |
731 | |
732 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 733 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
734 | u.vlan.list) |
735 | dev_close(vlan->dev); | |
736 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
737 | |
738 | /* free all potentially still buffered bcast frames */ | |
739 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
740 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
741 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
742 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
743 | } |
744 | ||
34d4bc4d JB |
745 | if (going_down) |
746 | local->open_count--; | |
0d143fe1 JB |
747 | |
748 | switch (sdata->vif.type) { | |
749 | case NL80211_IFTYPE_AP_VLAN: | |
750 | list_del(&sdata->u.vlan.list); | |
751 | /* no need to tell driver */ | |
752 | break; | |
753 | case NL80211_IFTYPE_MONITOR: | |
754 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
755 | local->cooked_mntrs--; | |
756 | break; | |
757 | } | |
758 | ||
759 | local->monitors--; | |
e8975581 | 760 | if (local->monitors == 0) { |
0869aea0 JB |
761 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
762 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 763 | ieee80211_del_virtual_monitor(local); |
e8975581 | 764 | } |
0d143fe1 | 765 | |
85416a4f | 766 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 767 | ieee80211_configure_filter(local); |
0d143fe1 | 768 | break; |
0d143fe1 | 769 | default: |
c1475ca9 | 770 | flush_work(&sdata->work); |
35f20c14 JB |
771 | /* |
772 | * When we get here, the interface is marked down. | |
773 | * Call synchronize_rcu() to wait for the RX path | |
774 | * should it be using the interface and enqueuing | |
775 | * frames at this very time on another CPU. | |
776 | */ | |
777 | synchronize_rcu(); | |
778 | skb_queue_purge(&sdata->skb_queue); | |
779 | ||
97af7432 | 780 | /* |
b9dcf712 JB |
781 | * Disable beaconing here for mesh only, AP and IBSS |
782 | * are already taken care of. | |
97af7432 | 783 | */ |
b9dcf712 | 784 | if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
97af7432 BC |
785 | ieee80211_bss_info_change_notify(sdata, |
786 | BSS_CHANGED_BEACON_ENABLED); | |
97af7432 | 787 | |
b9dcf712 JB |
788 | /* |
789 | * Free all remaining keys, there shouldn't be any, | |
790 | * except maybe group keys in AP more or WDS? | |
791 | */ | |
ad0e2b5a | 792 | ieee80211_free_keys(sdata); |
b9dcf712 | 793 | |
34d4bc4d | 794 | if (going_down) |
7b7eab6f | 795 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
796 | } |
797 | ||
798 | sdata->bss = NULL; | |
799 | ||
7da7cc1d | 800 | mutex_lock(&local->mtx); |
5cff20e6 | 801 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 802 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
803 | |
804 | ieee80211_recalc_ps(local, -1); | |
805 | ||
0d143fe1 | 806 | if (local->open_count == 0) { |
4e6cbfd0 JL |
807 | if (local->ops->napi_poll) |
808 | napi_disable(&local->napi); | |
ea77f12f | 809 | ieee80211_clear_tx_pending(local); |
84f6a01c | 810 | ieee80211_stop_device(local); |
0d143fe1 | 811 | |
e8975581 JB |
812 | /* no reconfiguring after stop! */ |
813 | hw_reconf_flags = 0; | |
0d143fe1 JB |
814 | } |
815 | ||
2cf22b89 BG |
816 | /* Re-calculate channel-type, in case there are multiple vifs |
817 | * on different channel types. | |
818 | */ | |
819 | orig_ct = local->_oper_channel_type; | |
820 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
821 | ||
e8975581 | 822 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 823 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
824 | ieee80211_hw_config(local, hw_reconf_flags); |
825 | ||
5061b0c2 JB |
826 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
827 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
828 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
829 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
830 | if (info->control.vif == &sdata->vif) { | |
831 | __skb_unlink(skb, &local->pending[i]); | |
832 | dev_kfree_skb_irq(skb); | |
833 | } | |
834 | } | |
835 | } | |
836 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
837 | |
838 | if (local->monitors == local->open_count && local->monitors > 0) | |
839 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
840 | } |
841 | ||
842 | static int ieee80211_stop(struct net_device *dev) | |
843 | { | |
844 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
845 | ||
846 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 847 | |
0d143fe1 JB |
848 | return 0; |
849 | } | |
850 | ||
851 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
852 | { | |
0d143fe1 | 853 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 854 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
855 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
856 | ||
857 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
858 | promisc = !!(dev->flags & IFF_PROMISC); | |
859 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
860 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
861 | ||
862 | if (allmulti != sdata_allmulti) { | |
863 | if (dev->flags & IFF_ALLMULTI) | |
864 | atomic_inc(&local->iff_allmultis); | |
865 | else | |
866 | atomic_dec(&local->iff_allmultis); | |
867 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
868 | } | |
869 | ||
870 | if (promisc != sdata_promisc) { | |
871 | if (dev->flags & IFF_PROMISC) | |
872 | atomic_inc(&local->iff_promiscs); | |
873 | else | |
874 | atomic_dec(&local->iff_promiscs); | |
875 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
876 | } | |
3b8d81e0 | 877 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 878 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 879 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 880 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
881 | } |
882 | ||
75636525 JB |
883 | /* |
884 | * Called when the netdev is removed or, by the code below, before | |
885 | * the interface type changes. | |
886 | */ | |
887 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 888 | { |
75636525 JB |
889 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
890 | struct ieee80211_local *local = sdata->local; | |
75636525 | 891 | int flushed; |
f0706e82 JB |
892 | int i; |
893 | ||
75636525 JB |
894 | /* free extra data */ |
895 | ieee80211_free_keys(sdata); | |
896 | ||
aee14ceb JM |
897 | ieee80211_debugfs_remove_netdev(sdata); |
898 | ||
f0706e82 | 899 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
900 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
901 | sdata->fragment_next = 0; | |
11a843b7 | 902 | |
b9dcf712 JB |
903 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
904 | mesh_rmc_free(sdata); | |
75636525 JB |
905 | |
906 | flushed = sta_info_flush(local, sdata); | |
907 | WARN_ON(flushed); | |
f0706e82 JB |
908 | } |
909 | ||
cf0277e7 JB |
910 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
911 | struct sk_buff *skb) | |
912 | { | |
913 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
914 | } | |
915 | ||
587e729e JB |
916 | static const struct net_device_ops ieee80211_dataif_ops = { |
917 | .ndo_open = ieee80211_open, | |
918 | .ndo_stop = ieee80211_stop, | |
919 | .ndo_uninit = ieee80211_teardown_sdata, | |
920 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
afc4b13d | 921 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 922 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 923 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 924 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
925 | }; |
926 | ||
cf0277e7 JB |
927 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
928 | struct sk_buff *skb) | |
929 | { | |
930 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
931 | struct ieee80211_local *local = sdata->local; | |
932 | struct ieee80211_hdr *hdr; | |
933 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
934 | ||
32c5057b | 935 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
936 | return 0; |
937 | ||
938 | if (skb->len < 4 || | |
b49bb574 | 939 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
940 | return 0; /* doesn't matter, frame will be dropped */ |
941 | ||
b49bb574 | 942 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 943 | |
00e96dec | 944 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
945 | } |
946 | ||
587e729e JB |
947 | static const struct net_device_ops ieee80211_monitorif_ops = { |
948 | .ndo_open = ieee80211_open, | |
949 | .ndo_stop = ieee80211_stop, | |
950 | .ndo_uninit = ieee80211_teardown_sdata, | |
951 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
afc4b13d | 952 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
953 | .ndo_change_mtu = ieee80211_change_mtu, |
954 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 955 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
956 | }; |
957 | ||
958 | static void ieee80211_if_setup(struct net_device *dev) | |
959 | { | |
960 | ether_setup(dev); | |
550fd08c | 961 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 962 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
963 | dev->destructor = free_netdev; |
964 | } | |
965 | ||
1fa57d01 JB |
966 | static void ieee80211_iface_work(struct work_struct *work) |
967 | { | |
968 | struct ieee80211_sub_if_data *sdata = | |
969 | container_of(work, struct ieee80211_sub_if_data, work); | |
970 | struct ieee80211_local *local = sdata->local; | |
971 | struct sk_buff *skb; | |
344eec67 | 972 | struct sta_info *sta; |
c1475ca9 | 973 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
974 | |
975 | if (!ieee80211_sdata_running(sdata)) | |
976 | return; | |
977 | ||
978 | if (local->scanning) | |
979 | return; | |
980 | ||
981 | /* | |
982 | * ieee80211_queue_work() should have picked up most cases, | |
983 | * here we'll pick the rest. | |
984 | */ | |
985 | if (WARN(local->suspended, | |
986 | "interface work scheduled while going to suspend\n")) | |
987 | return; | |
988 | ||
989 | /* first process frames */ | |
990 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
991 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
992 | ||
c1475ca9 JB |
993 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
994 | ra_tid = (void *)&skb->cb; | |
995 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
996 | ra_tid->tid); | |
997 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
998 | ra_tid = (void *)&skb->cb; | |
999 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
1000 | ra_tid->tid); | |
1001 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
1002 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 1003 | int len = skb->len; |
bed7ee6e | 1004 | |
a93e3644 | 1005 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1006 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1007 | if (sta) { |
1008 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1009 | case WLAN_ACTION_ADDBA_REQ: | |
1010 | ieee80211_process_addba_request( | |
1011 | local, sta, mgmt, len); | |
1012 | break; | |
1013 | case WLAN_ACTION_ADDBA_RESP: | |
1014 | ieee80211_process_addba_resp(local, sta, | |
1015 | mgmt, len); | |
1016 | break; | |
1017 | case WLAN_ACTION_DELBA: | |
1018 | ieee80211_process_delba(sdata, sta, | |
1019 | mgmt, len); | |
1020 | break; | |
1021 | default: | |
1022 | WARN_ON(1); | |
1023 | break; | |
1024 | } | |
1025 | } | |
a93e3644 | 1026 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1027 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1028 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1029 | /* | |
1030 | * So the frame isn't mgmt, but frame_control | |
1031 | * is at the right place anyway, of course, so | |
1032 | * the if statement is correct. | |
1033 | * | |
1034 | * Warn if we have other data frame types here, | |
1035 | * they must not get here. | |
1036 | */ | |
1037 | WARN_ON(hdr->frame_control & | |
1038 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1039 | WARN_ON(!(hdr->seq_ctrl & | |
1040 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1041 | /* | |
1042 | * This was a fragment of a frame, received while | |
1043 | * a block-ack session was active. That cannot be | |
1044 | * right, so terminate the session. | |
1045 | */ | |
a93e3644 | 1046 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1047 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1048 | if (sta) { |
1049 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1050 | IEEE80211_QOS_CTL_TID_MASK; | |
1051 | ||
1052 | __ieee80211_stop_rx_ba_session( | |
1053 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1054 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1055 | true); | |
344eec67 | 1056 | } |
a93e3644 | 1057 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1058 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1059 | case NL80211_IFTYPE_STATION: |
1060 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1061 | break; | |
1062 | case NL80211_IFTYPE_ADHOC: | |
1063 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1064 | break; | |
1065 | case NL80211_IFTYPE_MESH_POINT: | |
1066 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1067 | break; | |
1068 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1069 | break; | |
1070 | default: | |
1071 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1072 | break; |
1073 | } | |
36b3a628 JB |
1074 | |
1075 | kfree_skb(skb); | |
1fa57d01 JB |
1076 | } |
1077 | ||
1078 | /* then other type-dependent work */ | |
1079 | switch (sdata->vif.type) { | |
1080 | case NL80211_IFTYPE_STATION: | |
1081 | ieee80211_sta_work(sdata); | |
1082 | break; | |
1083 | case NL80211_IFTYPE_ADHOC: | |
1084 | ieee80211_ibss_work(sdata); | |
1085 | break; | |
1086 | case NL80211_IFTYPE_MESH_POINT: | |
1087 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1088 | break; | |
1089 | ieee80211_mesh_work(sdata); | |
1090 | break; | |
1091 | default: | |
1092 | break; | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | ||
75636525 JB |
1097 | /* |
1098 | * Helper function to initialise an interface to a specific type. | |
1099 | */ | |
1100 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1101 | enum nl80211_iftype type) |
f0706e82 | 1102 | { |
75636525 JB |
1103 | /* clear type-dependent union */ |
1104 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1105 | ||
1106 | /* and set some type-dependent values */ | |
1107 | sdata->vif.type = type; | |
2ca27bcf | 1108 | sdata->vif.p2p = false; |
587e729e | 1109 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 1110 | sdata->wdev.iftype = type; |
75636525 | 1111 | |
a621fa4d JB |
1112 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1113 | sdata->control_port_no_encrypt = false; | |
1114 | ||
b53be792 SW |
1115 | sdata->noack_map = 0; |
1116 | ||
75636525 JB |
1117 | /* only monitor differs */ |
1118 | sdata->dev->type = ARPHRD_ETHER; | |
1119 | ||
35f20c14 | 1120 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1121 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 1122 | |
75636525 | 1123 | switch (type) { |
2ca27bcf JB |
1124 | case NL80211_IFTYPE_P2P_GO: |
1125 | type = NL80211_IFTYPE_AP; | |
1126 | sdata->vif.type = type; | |
1127 | sdata->vif.p2p = true; | |
1128 | /* fall through */ | |
05c914fe | 1129 | case NL80211_IFTYPE_AP: |
75636525 JB |
1130 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
1131 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
1132 | break; | |
2ca27bcf JB |
1133 | case NL80211_IFTYPE_P2P_CLIENT: |
1134 | type = NL80211_IFTYPE_STATION; | |
1135 | sdata->vif.type = type; | |
1136 | sdata->vif.p2p = true; | |
1137 | /* fall through */ | |
05c914fe | 1138 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1139 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1140 | break; |
46900298 JB |
1141 | case NL80211_IFTYPE_ADHOC: |
1142 | ieee80211_ibss_setup_sdata(sdata); | |
1143 | break; | |
05c914fe | 1144 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1145 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1146 | ieee80211_mesh_init_sdata(sdata); | |
1147 | break; | |
05c914fe | 1148 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1149 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1150 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1151 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1152 | MONITOR_FLAG_OTHER_BSS; | |
1153 | break; | |
05c914fe JB |
1154 | case NL80211_IFTYPE_WDS: |
1155 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 1156 | break; |
05c914fe | 1157 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1158 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1159 | BUG(); |
1160 | break; | |
1161 | } | |
1162 | ||
1163 | ieee80211_debugfs_add_netdev(sdata); | |
1164 | } | |
1165 | ||
94c514fe AE |
1166 | static void ieee80211_clean_sdata(struct ieee80211_sub_if_data *sdata) |
1167 | { | |
1168 | switch (sdata->vif.type) { | |
1169 | case NL80211_IFTYPE_MESH_POINT: | |
1170 | mesh_path_flush_by_iface(sdata); | |
1171 | break; | |
1172 | ||
1173 | default: | |
1174 | break; | |
1175 | } | |
1176 | } | |
1177 | ||
34d4bc4d JB |
1178 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1179 | enum nl80211_iftype type) | |
1180 | { | |
1181 | struct ieee80211_local *local = sdata->local; | |
1182 | int ret, err; | |
2ca27bcf JB |
1183 | enum nl80211_iftype internal_type = type; |
1184 | bool p2p = false; | |
34d4bc4d JB |
1185 | |
1186 | ASSERT_RTNL(); | |
1187 | ||
1188 | if (!local->ops->change_interface) | |
1189 | return -EBUSY; | |
1190 | ||
1191 | switch (sdata->vif.type) { | |
1192 | case NL80211_IFTYPE_AP: | |
1193 | case NL80211_IFTYPE_STATION: | |
1194 | case NL80211_IFTYPE_ADHOC: | |
1195 | /* | |
1196 | * Could maybe also all others here? | |
1197 | * Just not sure how that interacts | |
1198 | * with the RX/config path e.g. for | |
1199 | * mesh. | |
1200 | */ | |
1201 | break; | |
1202 | default: | |
1203 | return -EBUSY; | |
1204 | } | |
1205 | ||
1206 | switch (type) { | |
1207 | case NL80211_IFTYPE_AP: | |
1208 | case NL80211_IFTYPE_STATION: | |
1209 | case NL80211_IFTYPE_ADHOC: | |
1210 | /* | |
1211 | * Could probably support everything | |
1212 | * but WDS here (WDS do_open can fail | |
1213 | * under memory pressure, which this | |
1214 | * code isn't prepared to handle). | |
1215 | */ | |
1216 | break; | |
2ca27bcf JB |
1217 | case NL80211_IFTYPE_P2P_CLIENT: |
1218 | p2p = true; | |
1219 | internal_type = NL80211_IFTYPE_STATION; | |
1220 | break; | |
1221 | case NL80211_IFTYPE_P2P_GO: | |
1222 | p2p = true; | |
1223 | internal_type = NL80211_IFTYPE_AP; | |
1224 | break; | |
34d4bc4d JB |
1225 | default: |
1226 | return -EBUSY; | |
1227 | } | |
1228 | ||
2ca27bcf | 1229 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1230 | if (ret) |
1231 | return ret; | |
1232 | ||
1233 | ieee80211_do_stop(sdata, false); | |
1234 | ||
1235 | ieee80211_teardown_sdata(sdata->dev); | |
1236 | ||
2ca27bcf | 1237 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1238 | if (ret) |
1239 | type = sdata->vif.type; | |
1240 | ||
3a25a8c8 JB |
1241 | /* |
1242 | * Ignore return value here, there's not much we can do since | |
1243 | * the driver changed the interface type internally already. | |
1244 | * The warnings will hopefully make driver authors fix it :-) | |
1245 | */ | |
1246 | ieee80211_check_queues(sdata); | |
1247 | ||
34d4bc4d JB |
1248 | ieee80211_setup_sdata(sdata, type); |
1249 | ||
1250 | err = ieee80211_do_open(sdata->dev, false); | |
1251 | WARN(err, "type change: do_open returned %d", err); | |
1252 | ||
1253 | return ret; | |
1254 | } | |
1255 | ||
f3947e2d | 1256 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1257 | enum nl80211_iftype type) |
75636525 | 1258 | { |
34d4bc4d JB |
1259 | int ret; |
1260 | ||
f3947e2d JB |
1261 | ASSERT_RTNL(); |
1262 | ||
2ca27bcf | 1263 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1264 | return 0; |
1265 | ||
e60c7744 | 1266 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1267 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1268 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1269 | return -EOPNOTSUPP; |
1270 | ||
34d4bc4d JB |
1271 | if (ieee80211_sdata_running(sdata)) { |
1272 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1273 | if (ret) | |
1274 | return ret; | |
1275 | } else { | |
1276 | /* Purge and reset type-dependent state. */ | |
1277 | ieee80211_teardown_sdata(sdata->dev); | |
1278 | ieee80211_setup_sdata(sdata, type); | |
1279 | } | |
75636525 JB |
1280 | |
1281 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1282 | sdata->vif.bss_conf.basic_rates = |
96dd22ac | 1283 | ieee80211_mandatory_rates(sdata->local, |
679ef4ea | 1284 | sdata->local->oper_channel->band); |
75636525 | 1285 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1286 | if (type == NL80211_IFTYPE_STATION) |
1287 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1288 | |
1289 | return 0; | |
f0706e82 JB |
1290 | } |
1291 | ||
fa9029f8 JB |
1292 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
1293 | struct net_device *dev, | |
1294 | enum nl80211_iftype type) | |
1295 | { | |
1296 | struct ieee80211_sub_if_data *sdata; | |
1297 | u64 mask, start, addr, val, inc; | |
1298 | u8 *m; | |
1299 | u8 tmp_addr[ETH_ALEN]; | |
1300 | int i; | |
1301 | ||
1302 | /* default ... something at least */ | |
1303 | memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1304 | ||
1305 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1306 | local->hw.wiphy->n_addresses <= 1) | |
1307 | return; | |
1308 | ||
1309 | ||
1310 | mutex_lock(&local->iflist_mtx); | |
1311 | ||
1312 | switch (type) { | |
1313 | case NL80211_IFTYPE_MONITOR: | |
1314 | /* doesn't matter */ | |
1315 | break; | |
1316 | case NL80211_IFTYPE_WDS: | |
1317 | case NL80211_IFTYPE_AP_VLAN: | |
1318 | /* match up with an AP interface */ | |
1319 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1320 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1321 | continue; | |
1322 | memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); | |
1323 | break; | |
1324 | } | |
1325 | /* keep default if no AP interface present */ | |
1326 | break; | |
1327 | default: | |
1328 | /* assign a new address if possible -- try n_addresses first */ | |
1329 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1330 | bool used = false; | |
1331 | ||
1332 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1333 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1334 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1335 | used = true; | |
1336 | break; | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | if (!used) { | |
1341 | memcpy(dev->perm_addr, | |
1342 | local->hw.wiphy->addresses[i].addr, | |
1343 | ETH_ALEN); | |
1344 | break; | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | /* try mask if available */ | |
1349 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1350 | break; | |
1351 | ||
1352 | m = local->hw.wiphy->addr_mask; | |
1353 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1354 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1355 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1356 | ||
1357 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1358 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1359 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1360 | break; |
1361 | } | |
1362 | ||
1363 | m = local->hw.wiphy->perm_addr; | |
1364 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1365 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1366 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1367 | ||
1368 | inc = 1ULL<<__ffs64(mask); | |
1369 | val = (start & mask); | |
1370 | addr = (start & ~mask) | (val & mask); | |
1371 | do { | |
1372 | bool used = false; | |
1373 | ||
1374 | tmp_addr[5] = addr >> 0*8; | |
1375 | tmp_addr[4] = addr >> 1*8; | |
1376 | tmp_addr[3] = addr >> 2*8; | |
1377 | tmp_addr[2] = addr >> 3*8; | |
1378 | tmp_addr[1] = addr >> 4*8; | |
1379 | tmp_addr[0] = addr >> 5*8; | |
1380 | ||
1381 | val += inc; | |
1382 | ||
1383 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1384 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1385 | ETH_ALEN) == 0) { | |
1386 | used = true; | |
1387 | break; | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | if (!used) { | |
1392 | memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); | |
1393 | break; | |
1394 | } | |
1395 | addr = (start & ~mask) | (val & mask); | |
1396 | } while (addr != start); | |
1397 | ||
1398 | break; | |
1399 | } | |
1400 | ||
1401 | mutex_unlock(&local->iflist_mtx); | |
1402 | } | |
1403 | ||
3e122be0 | 1404 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1405 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1406 | struct vif_params *params) |
f0706e82 JB |
1407 | { |
1408 | struct net_device *ndev; | |
f0706e82 | 1409 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1410 | int ret, i; |
ded81f6b | 1411 | int txqs = 1; |
f0706e82 JB |
1412 | |
1413 | ASSERT_RTNL(); | |
75636525 | 1414 | |
ded81f6b JB |
1415 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1416 | txqs = IEEE80211_NUM_ACS; | |
1417 | ||
55d99059 | 1418 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
ded81f6b | 1419 | name, ieee80211_if_setup, txqs, 1); |
f0706e82 JB |
1420 | if (!ndev) |
1421 | return -ENOMEM; | |
a272a720 | 1422 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 1423 | |
f3994ece JB |
1424 | ndev->needed_headroom = local->tx_headroom + |
1425 | 4*6 /* four MAC addresses */ | |
1426 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1427 | + 6 /* mesh */ | |
1428 | + 8 /* rfc1042/bridge tunnel */ | |
1429 | - ETH_HLEN /* ethernet hard_header_len */ | |
1430 | + IEEE80211_ENCRYPT_HEADROOM; | |
1431 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1432 | ||
59e7e707 TLSC |
1433 | ret = dev_alloc_name(ndev, ndev->name); |
1434 | if (ret < 0) | |
1435 | goto fail; | |
1436 | ||
fa9029f8 JB |
1437 | ieee80211_assign_perm_addr(local, ndev, type); |
1438 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f0706e82 JB |
1439 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1440 | ||
3e122be0 JB |
1441 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
1442 | sdata = netdev_priv(ndev); | |
f0706e82 | 1443 | ndev->ieee80211_ptr = &sdata->wdev; |
47846c9b JB |
1444 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
1445 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
75636525 JB |
1446 | |
1447 | /* initialise type-independent data */ | |
f0706e82 | 1448 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1449 | sdata->local = local; |
75636525 | 1450 | sdata->dev = ndev; |
68542962 JO |
1451 | #ifdef CONFIG_INET |
1452 | sdata->arp_filter_state = true; | |
1453 | #endif | |
75636525 JB |
1454 | |
1455 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1456 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1457 | ||
1458 | INIT_LIST_HEAD(&sdata->key_list); | |
1459 | ||
37eb0b16 JM |
1460 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1461 | struct ieee80211_supported_band *sband; | |
1462 | sband = local->hw.wiphy->bands[i]; | |
1463 | sdata->rc_rateidx_mask[i] = | |
1464 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1465 | if (sband) |
1466 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1467 | sband->ht_cap.mcs.rx_mask, | |
1468 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1469 | else | |
1470 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1471 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1472 | } |
75636525 | 1473 | |
3a25a8c8 JB |
1474 | ieee80211_set_default_queues(sdata); |
1475 | ||
75636525 JB |
1476 | /* setup type-dependent data */ |
1477 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1478 | |
9bc383de JB |
1479 | if (params) { |
1480 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1481 | if (type == NL80211_IFTYPE_STATION) | |
1482 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1483 | } | |
1484 | ||
72d78728 AN |
1485 | ndev->features |= local->hw.netdev_features; |
1486 | ||
f0706e82 JB |
1487 | ret = register_netdevice(ndev); |
1488 | if (ret) | |
1489 | goto fail; | |
1490 | ||
c771c9d8 | 1491 | mutex_lock(&local->iflist_mtx); |
79010420 | 1492 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1493 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1494 | |
84efbb84 JB |
1495 | if (new_wdev) |
1496 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1497 | |
f0706e82 JB |
1498 | return 0; |
1499 | ||
75636525 | 1500 | fail: |
f0706e82 JB |
1501 | free_netdev(ndev); |
1502 | return ret; | |
1503 | } | |
1504 | ||
f698d856 | 1505 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1506 | { |
f0706e82 | 1507 | ASSERT_RTNL(); |
11a843b7 | 1508 | |
c771c9d8 | 1509 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1510 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1511 | mutex_unlock(&sdata->local->iflist_mtx); |
1512 | ||
94c514fe AE |
1513 | /* clean up type-dependent data */ |
1514 | ieee80211_clean_sdata(sdata); | |
ece1a2e7 | 1515 | |
75636525 | 1516 | synchronize_rcu(); |
f698d856 | 1517 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
1518 | } |
1519 | ||
75636525 JB |
1520 | /* |
1521 | * Remove all interfaces, may only be called at hardware unregistration | |
1522 | * time because it doesn't do RCU-safe list removals. | |
1523 | */ | |
1524 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1525 | { |
75636525 | 1526 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1527 | LIST_HEAD(unreg_list); |
f0706e82 JB |
1528 | |
1529 | ASSERT_RTNL(); | |
1530 | ||
efe117ab | 1531 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1532 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1533 | list_del(&sdata->list); | |
c771c9d8 | 1534 | |
94c514fe | 1535 | ieee80211_clean_sdata(sdata); |
ece1a2e7 | 1536 | |
efe117ab | 1537 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 1538 | } |
efe117ab ED |
1539 | mutex_unlock(&local->iflist_mtx); |
1540 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1541 | list_del(&unreg_list); |
f0706e82 | 1542 | } |
5cff20e6 | 1543 | |
47846c9b JB |
1544 | static int netdev_notify(struct notifier_block *nb, |
1545 | unsigned long state, | |
1546 | void *ndev) | |
1547 | { | |
1548 | struct net_device *dev = ndev; | |
1549 | struct ieee80211_sub_if_data *sdata; | |
1550 | ||
1551 | if (state != NETDEV_CHANGENAME) | |
1552 | return 0; | |
1553 | ||
1554 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1555 | return 0; | |
1556 | ||
1557 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1558 | return 0; | |
1559 | ||
1560 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1561 | ||
2f5265e6 | 1562 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1563 | |
1564 | ieee80211_debugfs_rename_netdev(sdata); | |
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | static struct notifier_block mac80211_netdev_notifier = { | |
1569 | .notifier_call = netdev_notify, | |
1570 | }; | |
1571 | ||
1572 | int ieee80211_iface_init(void) | |
1573 | { | |
1574 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1575 | } | |
1576 | ||
1577 | void ieee80211_iface_exit(void) | |
1578 | { | |
1579 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1580 | } |