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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: | |
98104fde | 452 | case NL80211_IFTYPE_P2P_DEVICE: |
0d143fe1 JB |
453 | /* cannot happen */ |
454 | WARN_ON(1); | |
455 | break; | |
456 | } | |
457 | ||
458 | if (local->open_count == 0) { | |
24487981 | 459 | res = drv_start(local); |
0d143fe1 JB |
460 | if (res) |
461 | goto err_del_bss; | |
4e6cbfd0 JL |
462 | if (local->ops->napi_poll) |
463 | napi_enable(&local->napi); | |
e8975581 JB |
464 | /* we're brought up, everything changes */ |
465 | hw_reconf_flags = ~0; | |
1f87f7d3 | 466 | ieee80211_led_radio(local, true); |
67408c8c JB |
467 | ieee80211_mod_tpt_led_trig(local, |
468 | IEEE80211_TPT_LEDTRIG_FL_RADIO, 0); | |
0d143fe1 JB |
469 | } |
470 | ||
471 | /* | |
bf533e0b JB |
472 | * Copy the hopefully now-present MAC address to |
473 | * this interface, if it has the special null one. | |
0d143fe1 | 474 | */ |
bf533e0b JB |
475 | if (is_zero_ether_addr(dev->dev_addr)) { |
476 | memcpy(dev->dev_addr, | |
477 | local->hw.wiphy->perm_addr, | |
478 | ETH_ALEN); | |
479 | memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN); | |
480 | ||
481 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
4d6c36fa JB |
482 | res = -EADDRNOTAVAIL; |
483 | goto err_stop; | |
0adc23f5 | 484 | } |
0d143fe1 JB |
485 | } |
486 | ||
0d143fe1 JB |
487 | switch (sdata->vif.type) { |
488 | case NL80211_IFTYPE_AP_VLAN: | |
3edaf3e6 JB |
489 | /* no need to tell driver, but set carrier */ |
490 | if (rtnl_dereference(sdata->bss->beacon)) | |
491 | netif_carrier_on(dev); | |
492 | else | |
493 | netif_carrier_off(dev); | |
0d143fe1 JB |
494 | break; |
495 | case NL80211_IFTYPE_MONITOR: | |
496 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
497 | local->cooked_mntrs++; | |
498 | break; | |
499 | } | |
500 | ||
075e0847 JB |
501 | if (local->monitors == 0 && local->open_count == 0) { |
502 | res = ieee80211_add_virtual_monitor(local); | |
503 | if (res) | |
504 | goto err_stop; | |
505 | } | |
506 | ||
0d143fe1 JB |
507 | /* must be before the call to ieee80211_configure_filter */ |
508 | local->monitors++; | |
e8975581 | 509 | if (local->monitors == 1) { |
0869aea0 JB |
510 | local->hw.conf.flags |= IEEE80211_CONF_MONITOR; |
511 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
e8975581 | 512 | } |
0d143fe1 | 513 | |
85416a4f | 514 | ieee80211_adjust_monitor_flags(sdata, 1); |
0d143fe1 | 515 | ieee80211_configure_filter(local); |
53e9b1de DG |
516 | |
517 | netif_carrier_on(dev); | |
0d143fe1 | 518 | break; |
0d143fe1 | 519 | default: |
34d4bc4d | 520 | if (coming_up) { |
075e0847 JB |
521 | ieee80211_del_virtual_monitor(local); |
522 | ||
7b7eab6f | 523 | res = drv_add_interface(local, sdata); |
34d4bc4d JB |
524 | if (res) |
525 | goto err_stop; | |
3a25a8c8 JB |
526 | res = ieee80211_check_queues(sdata); |
527 | if (res) | |
528 | goto err_del_interface; | |
34d4bc4d | 529 | } |
0d143fe1 | 530 | |
29cbe68c | 531 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 532 | local->fif_pspoll++; |
7be5086d | 533 | local->fif_probe_req++; |
e3b90ca2 | 534 | |
e3b90ca2 | 535 | ieee80211_configure_filter(local); |
7be5086d JB |
536 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { |
537 | local->fif_probe_req++; | |
a3c9aa51 | 538 | } |
e3b90ca2 | 539 | |
0d143fe1 JB |
540 | changed |= ieee80211_reset_erp_info(sdata); |
541 | ieee80211_bss_info_change_notify(sdata, changed); | |
0d143fe1 | 542 | |
c405c629 JB |
543 | switch (sdata->vif.type) { |
544 | case NL80211_IFTYPE_STATION: | |
545 | case NL80211_IFTYPE_ADHOC: | |
546 | case NL80211_IFTYPE_AP: | |
547 | case NL80211_IFTYPE_MESH_POINT: | |
0d143fe1 | 548 | netif_carrier_off(dev); |
c405c629 | 549 | break; |
1411af15 JB |
550 | case NL80211_IFTYPE_WDS: |
551 | break; | |
c405c629 | 552 | default: |
0d143fe1 | 553 | netif_carrier_on(dev); |
c405c629 | 554 | } |
59034591 EP |
555 | |
556 | /* | |
557 | * set default queue parameters so drivers don't | |
558 | * need to initialise the hardware if the hardware | |
559 | * doesn't start up with sane defaults | |
560 | */ | |
3abead59 | 561 | ieee80211_set_wmm_default(sdata, true); |
0d143fe1 JB |
562 | } |
563 | ||
2d2080c3 JB |
564 | set_bit(SDATA_STATE_RUNNING, &sdata->state); |
565 | ||
0d143fe1 JB |
566 | if (sdata->vif.type == NL80211_IFTYPE_WDS) { |
567 | /* Create STA entry for the WDS peer */ | |
568 | sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, | |
569 | GFP_KERNEL); | |
570 | if (!sta) { | |
571 | res = -ENOMEM; | |
572 | goto err_del_interface; | |
573 | } | |
574 | ||
83d5cc01 JB |
575 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
576 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
577 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
0d143fe1 JB |
578 | |
579 | res = sta_info_insert(sta); | |
580 | if (res) { | |
581 | /* STA has been freed */ | |
582 | goto err_del_interface; | |
583 | } | |
1be7fe8d BJ |
584 | |
585 | rate_control_rate_init(sta); | |
1411af15 | 586 | netif_carrier_on(dev); |
0d143fe1 JB |
587 | } |
588 | ||
0d143fe1 JB |
589 | /* |
590 | * set_multicast_list will be invoked by the networking core | |
591 | * which will check whether any increments here were done in | |
592 | * error and sync them down to the hardware as filter flags. | |
593 | */ | |
594 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
595 | atomic_inc(&local->iff_allmultis); | |
596 | ||
597 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
598 | atomic_inc(&local->iff_promiscs); | |
599 | ||
7da7cc1d | 600 | mutex_lock(&local->mtx); |
5cff20e6 | 601 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 602 | mutex_unlock(&local->mtx); |
5cff20e6 | 603 | |
34d4bc4d JB |
604 | if (coming_up) |
605 | local->open_count++; | |
606 | ||
59034591 | 607 | if (hw_reconf_flags) |
e8975581 | 608 | ieee80211_hw_config(local, hw_reconf_flags); |
0d143fe1 | 609 | |
10f644a4 | 610 | ieee80211_recalc_ps(local, -1); |
965bedad | 611 | |
8a5b33f5 | 612 | netif_tx_start_all_queues(dev); |
0d143fe1 JB |
613 | |
614 | return 0; | |
615 | err_del_interface: | |
7b7eab6f | 616 | drv_remove_interface(local, sdata); |
0d143fe1 | 617 | err_stop: |
24487981 JB |
618 | if (!local->open_count) |
619 | drv_stop(local); | |
0d143fe1 JB |
620 | err_del_bss: |
621 | sdata->bss = NULL; | |
622 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) | |
623 | list_del(&sdata->u.vlan.list); | |
4d6c36fa | 624 | /* might already be clear but that doesn't matter */ |
2d2080c3 | 625 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
0d143fe1 JB |
626 | return res; |
627 | } | |
628 | ||
34d4bc4d | 629 | static int ieee80211_open(struct net_device *dev) |
0d143fe1 JB |
630 | { |
631 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
34d4bc4d JB |
632 | int err; |
633 | ||
634 | /* fail early if user set an invalid address */ | |
2fcf2824 | 635 | if (!is_valid_ether_addr(dev->dev_addr)) |
34d4bc4d JB |
636 | return -EADDRNOTAVAIL; |
637 | ||
638 | err = ieee80211_check_concurrent_iface(sdata, sdata->vif.type); | |
639 | if (err) | |
640 | return err; | |
641 | ||
642 | return ieee80211_do_open(dev, true); | |
643 | } | |
644 | ||
645 | static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, | |
646 | bool going_down) | |
647 | { | |
0d143fe1 | 648 | struct ieee80211_local *local = sdata->local; |
5061b0c2 JB |
649 | unsigned long flags; |
650 | struct sk_buff *skb, *tmp; | |
e8975581 | 651 | u32 hw_reconf_flags = 0; |
5061b0c2 | 652 | int i; |
2cf22b89 | 653 | enum nl80211_channel_type orig_ct; |
0d143fe1 | 654 | |
c29acf20 RM |
655 | clear_bit(SDATA_STATE_RUNNING, &sdata->state); |
656 | ||
e2fd5dbc | 657 | if (rcu_access_pointer(local->scan_sdata) == sdata) |
352ffad6 BC |
658 | ieee80211_scan_cancel(local); |
659 | ||
0d143fe1 JB |
660 | /* |
661 | * Stop TX on this interface first. | |
662 | */ | |
34d4bc4d | 663 | netif_tx_stop_all_queues(sdata->dev); |
0d143fe1 | 664 | |
2eb278e0 | 665 | ieee80211_roc_purge(sdata); |
af6b6374 | 666 | |
0d143fe1 JB |
667 | /* |
668 | * Remove all stations associated with this interface. | |
669 | * | |
670 | * This must be done before calling ops->remove_interface() | |
671 | * because otherwise we can later invoke ops->sta_notify() | |
672 | * whenever the STAs are removed, and that invalidates driver | |
673 | * assumptions about always getting a vif pointer that is valid | |
674 | * (because if we remove a STA after ops->remove_interface() | |
675 | * the driver will have removed the vif info already!) | |
676 | * | |
b9dcf712 JB |
677 | * This is relevant only in AP, WDS and mesh modes, since in |
678 | * all other modes we've already removed all stations when | |
679 | * disconnecting etc. | |
0d143fe1 JB |
680 | */ |
681 | sta_info_flush(local, sdata); | |
682 | ||
683 | /* | |
684 | * Don't count this interface for promisc/allmulti while it | |
685 | * is down. dev_mc_unsync() will invoke set_multicast_list | |
686 | * on the master interface which will sync these down to the | |
687 | * hardware as filter flags. | |
688 | */ | |
689 | if (sdata->flags & IEEE80211_SDATA_ALLMULTI) | |
690 | atomic_dec(&local->iff_allmultis); | |
691 | ||
692 | if (sdata->flags & IEEE80211_SDATA_PROMISC) | |
693 | atomic_dec(&local->iff_promiscs); | |
694 | ||
7be5086d | 695 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
e3b90ca2 | 696 | local->fif_pspoll--; |
7be5086d JB |
697 | local->fif_probe_req--; |
698 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) { | |
699 | local->fif_probe_req--; | |
700 | } | |
e3b90ca2 | 701 | |
34d4bc4d | 702 | netif_addr_lock_bh(sdata->dev); |
3b8d81e0 | 703 | spin_lock_bh(&local->filter_lock); |
34d4bc4d JB |
704 | __hw_addr_unsync(&local->mc_list, &sdata->dev->mc, |
705 | sdata->dev->addr_len); | |
3b8d81e0 | 706 | spin_unlock_bh(&local->filter_lock); |
34d4bc4d | 707 | netif_addr_unlock_bh(sdata->dev); |
3b8d81e0 | 708 | |
3ac64bee JB |
709 | ieee80211_configure_filter(local); |
710 | ||
7cbf0ba5 VN |
711 | del_timer_sync(&local->dynamic_ps_timer); |
712 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
0d143fe1 JB |
713 | |
714 | /* APs need special treatment */ | |
715 | if (sdata->vif.type == NL80211_IFTYPE_AP) { | |
57c9fff3 | 716 | struct ieee80211_sub_if_data *vlan, *tmpsdata; |
40b275b6 JB |
717 | struct beacon_data *old_beacon = |
718 | rtnl_dereference(sdata->u.ap.beacon); | |
aa7a0080 | 719 | struct probe_resp *old_probe_resp = |
02945821 | 720 | rtnl_dereference(sdata->u.ap.probe_resp); |
0d143fe1 | 721 | |
b9dcf712 JB |
722 | /* sdata_running will return false, so this will disable */ |
723 | ieee80211_bss_info_change_notify(sdata, | |
724 | BSS_CHANGED_BEACON_ENABLED); | |
725 | ||
02945821 | 726 | /* remove beacon and probe response */ |
a9b3cd7f | 727 | RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); |
02945821 | 728 | RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); |
0d143fe1 JB |
729 | synchronize_rcu(); |
730 | kfree(old_beacon); | |
aa7a0080 | 731 | kfree(old_probe_resp); |
0d143fe1 JB |
732 | |
733 | /* down all dependent devices, that is VLANs */ | |
57c9fff3 | 734 | list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, |
0d143fe1 JB |
735 | u.vlan.list) |
736 | dev_close(vlan->dev); | |
737 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
6f2d9335 JB |
738 | |
739 | /* free all potentially still buffered bcast frames */ | |
740 | local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); | |
741 | skb_queue_purge(&sdata->u.ap.ps_bc_buf); | |
afa762f6 EP |
742 | } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
743 | ieee80211_mgd_stop(sdata); | |
0d143fe1 JB |
744 | } |
745 | ||
34d4bc4d JB |
746 | if (going_down) |
747 | local->open_count--; | |
0d143fe1 JB |
748 | |
749 | switch (sdata->vif.type) { | |
750 | case NL80211_IFTYPE_AP_VLAN: | |
751 | list_del(&sdata->u.vlan.list); | |
752 | /* no need to tell driver */ | |
753 | break; | |
754 | case NL80211_IFTYPE_MONITOR: | |
755 | if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { | |
756 | local->cooked_mntrs--; | |
757 | break; | |
758 | } | |
759 | ||
760 | local->monitors--; | |
e8975581 | 761 | if (local->monitors == 0) { |
0869aea0 JB |
762 | local->hw.conf.flags &= ~IEEE80211_CONF_MONITOR; |
763 | hw_reconf_flags |= IEEE80211_CONF_CHANGE_MONITOR; | |
075e0847 | 764 | ieee80211_del_virtual_monitor(local); |
e8975581 | 765 | } |
0d143fe1 | 766 | |
85416a4f | 767 | ieee80211_adjust_monitor_flags(sdata, -1); |
0d143fe1 | 768 | ieee80211_configure_filter(local); |
0d143fe1 | 769 | break; |
0d143fe1 | 770 | default: |
c1475ca9 | 771 | flush_work(&sdata->work); |
35f20c14 JB |
772 | /* |
773 | * When we get here, the interface is marked down. | |
774 | * Call synchronize_rcu() to wait for the RX path | |
775 | * should it be using the interface and enqueuing | |
776 | * frames at this very time on another CPU. | |
777 | */ | |
778 | synchronize_rcu(); | |
779 | skb_queue_purge(&sdata->skb_queue); | |
780 | ||
b9dcf712 JB |
781 | /* |
782 | * Free all remaining keys, there shouldn't be any, | |
783 | * except maybe group keys in AP more or WDS? | |
784 | */ | |
ad0e2b5a | 785 | ieee80211_free_keys(sdata); |
b9dcf712 | 786 | |
34d4bc4d | 787 | if (going_down) |
7b7eab6f | 788 | drv_remove_interface(local, sdata); |
0d143fe1 JB |
789 | } |
790 | ||
791 | sdata->bss = NULL; | |
792 | ||
7da7cc1d | 793 | mutex_lock(&local->mtx); |
5cff20e6 | 794 | hw_reconf_flags |= __ieee80211_recalc_idle(local); |
7da7cc1d | 795 | mutex_unlock(&local->mtx); |
5cff20e6 JB |
796 | |
797 | ieee80211_recalc_ps(local, -1); | |
798 | ||
0d143fe1 | 799 | if (local->open_count == 0) { |
4e6cbfd0 JL |
800 | if (local->ops->napi_poll) |
801 | napi_disable(&local->napi); | |
ea77f12f | 802 | ieee80211_clear_tx_pending(local); |
84f6a01c | 803 | ieee80211_stop_device(local); |
0d143fe1 | 804 | |
e8975581 JB |
805 | /* no reconfiguring after stop! */ |
806 | hw_reconf_flags = 0; | |
0d143fe1 JB |
807 | } |
808 | ||
2cf22b89 BG |
809 | /* Re-calculate channel-type, in case there are multiple vifs |
810 | * on different channel types. | |
811 | */ | |
812 | orig_ct = local->_oper_channel_type; | |
813 | ieee80211_set_channel_type(local, NULL, NL80211_CHAN_NO_HT); | |
814 | ||
e8975581 | 815 | /* do after stop to avoid reconfiguring when we stop anyway */ |
2cf22b89 | 816 | if (hw_reconf_flags || (orig_ct != local->_oper_channel_type)) |
e8975581 JB |
817 | ieee80211_hw_config(local, hw_reconf_flags); |
818 | ||
5061b0c2 JB |
819 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
820 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
821 | skb_queue_walk_safe(&local->pending[i], skb, tmp) { | |
822 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
823 | if (info->control.vif == &sdata->vif) { | |
824 | __skb_unlink(skb, &local->pending[i]); | |
825 | dev_kfree_skb_irq(skb); | |
826 | } | |
827 | } | |
828 | } | |
829 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
075e0847 JB |
830 | |
831 | if (local->monitors == local->open_count && local->monitors > 0) | |
832 | ieee80211_add_virtual_monitor(local); | |
34d4bc4d JB |
833 | } |
834 | ||
835 | static int ieee80211_stop(struct net_device *dev) | |
836 | { | |
837 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
838 | ||
839 | ieee80211_do_stop(sdata, true); | |
5061b0c2 | 840 | |
0d143fe1 JB |
841 | return 0; |
842 | } | |
843 | ||
844 | static void ieee80211_set_multicast_list(struct net_device *dev) | |
845 | { | |
0d143fe1 | 846 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b4a4bf5d | 847 | struct ieee80211_local *local = sdata->local; |
0d143fe1 JB |
848 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
849 | ||
850 | allmulti = !!(dev->flags & IFF_ALLMULTI); | |
851 | promisc = !!(dev->flags & IFF_PROMISC); | |
852 | sdata_allmulti = !!(sdata->flags & IEEE80211_SDATA_ALLMULTI); | |
853 | sdata_promisc = !!(sdata->flags & IEEE80211_SDATA_PROMISC); | |
854 | ||
855 | if (allmulti != sdata_allmulti) { | |
856 | if (dev->flags & IFF_ALLMULTI) | |
857 | atomic_inc(&local->iff_allmultis); | |
858 | else | |
859 | atomic_dec(&local->iff_allmultis); | |
860 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; | |
861 | } | |
862 | ||
863 | if (promisc != sdata_promisc) { | |
864 | if (dev->flags & IFF_PROMISC) | |
865 | atomic_inc(&local->iff_promiscs); | |
866 | else | |
867 | atomic_dec(&local->iff_promiscs); | |
868 | sdata->flags ^= IEEE80211_SDATA_PROMISC; | |
869 | } | |
3b8d81e0 | 870 | spin_lock_bh(&local->filter_lock); |
22bedad3 | 871 | __hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len); |
3b8d81e0 | 872 | spin_unlock_bh(&local->filter_lock); |
3ac64bee | 873 | ieee80211_queue_work(&local->hw, &local->reconfig_filter); |
0d143fe1 JB |
874 | } |
875 | ||
75636525 JB |
876 | /* |
877 | * Called when the netdev is removed or, by the code below, before | |
878 | * the interface type changes. | |
879 | */ | |
880 | static void ieee80211_teardown_sdata(struct net_device *dev) | |
f0706e82 | 881 | { |
75636525 JB |
882 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
883 | struct ieee80211_local *local = sdata->local; | |
75636525 | 884 | int flushed; |
f0706e82 JB |
885 | int i; |
886 | ||
75636525 JB |
887 | /* free extra data */ |
888 | ieee80211_free_keys(sdata); | |
889 | ||
aee14ceb JM |
890 | ieee80211_debugfs_remove_netdev(sdata); |
891 | ||
f0706e82 | 892 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) |
75636525 JB |
893 | __skb_queue_purge(&sdata->fragments[i].skb_list); |
894 | sdata->fragment_next = 0; | |
11a843b7 | 895 | |
b9dcf712 JB |
896 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
897 | mesh_rmc_free(sdata); | |
75636525 JB |
898 | |
899 | flushed = sta_info_flush(local, sdata); | |
900 | WARN_ON(flushed); | |
f0706e82 JB |
901 | } |
902 | ||
cf0277e7 JB |
903 | static u16 ieee80211_netdev_select_queue(struct net_device *dev, |
904 | struct sk_buff *skb) | |
905 | { | |
906 | return ieee80211_select_queue(IEEE80211_DEV_TO_SUB_IF(dev), skb); | |
907 | } | |
908 | ||
587e729e JB |
909 | static const struct net_device_ops ieee80211_dataif_ops = { |
910 | .ndo_open = ieee80211_open, | |
911 | .ndo_stop = ieee80211_stop, | |
912 | .ndo_uninit = ieee80211_teardown_sdata, | |
913 | .ndo_start_xmit = ieee80211_subif_start_xmit, | |
afc4b13d | 914 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e | 915 | .ndo_change_mtu = ieee80211_change_mtu, |
47846c9b | 916 | .ndo_set_mac_address = ieee80211_change_mac, |
cf0277e7 | 917 | .ndo_select_queue = ieee80211_netdev_select_queue, |
587e729e JB |
918 | }; |
919 | ||
cf0277e7 JB |
920 | static u16 ieee80211_monitor_select_queue(struct net_device *dev, |
921 | struct sk_buff *skb) | |
922 | { | |
923 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
924 | struct ieee80211_local *local = sdata->local; | |
925 | struct ieee80211_hdr *hdr; | |
926 | struct ieee80211_radiotap_header *rtap = (void *)skb->data; | |
927 | ||
32c5057b | 928 | if (local->hw.queues < IEEE80211_NUM_ACS) |
cf0277e7 JB |
929 | return 0; |
930 | ||
931 | if (skb->len < 4 || | |
b49bb574 | 932 | skb->len < le16_to_cpu(rtap->it_len) + 2 /* frame control */) |
cf0277e7 JB |
933 | return 0; /* doesn't matter, frame will be dropped */ |
934 | ||
b49bb574 | 935 | hdr = (void *)((u8 *)skb->data + le16_to_cpu(rtap->it_len)); |
cf0277e7 | 936 | |
00e96dec | 937 | return ieee80211_select_queue_80211(sdata, skb, hdr); |
cf0277e7 JB |
938 | } |
939 | ||
587e729e JB |
940 | static const struct net_device_ops ieee80211_monitorif_ops = { |
941 | .ndo_open = ieee80211_open, | |
942 | .ndo_stop = ieee80211_stop, | |
943 | .ndo_uninit = ieee80211_teardown_sdata, | |
944 | .ndo_start_xmit = ieee80211_monitor_start_xmit, | |
afc4b13d | 945 | .ndo_set_rx_mode = ieee80211_set_multicast_list, |
587e729e JB |
946 | .ndo_change_mtu = ieee80211_change_mtu, |
947 | .ndo_set_mac_address = eth_mac_addr, | |
cf0277e7 | 948 | .ndo_select_queue = ieee80211_monitor_select_queue, |
587e729e JB |
949 | }; |
950 | ||
951 | static void ieee80211_if_setup(struct net_device *dev) | |
952 | { | |
953 | ether_setup(dev); | |
550fd08c | 954 | dev->priv_flags &= ~IFF_TX_SKB_SHARING; |
587e729e | 955 | dev->netdev_ops = &ieee80211_dataif_ops; |
587e729e JB |
956 | dev->destructor = free_netdev; |
957 | } | |
958 | ||
1fa57d01 JB |
959 | static void ieee80211_iface_work(struct work_struct *work) |
960 | { | |
961 | struct ieee80211_sub_if_data *sdata = | |
962 | container_of(work, struct ieee80211_sub_if_data, work); | |
963 | struct ieee80211_local *local = sdata->local; | |
964 | struct sk_buff *skb; | |
344eec67 | 965 | struct sta_info *sta; |
c1475ca9 | 966 | struct ieee80211_ra_tid *ra_tid; |
1fa57d01 JB |
967 | |
968 | if (!ieee80211_sdata_running(sdata)) | |
969 | return; | |
970 | ||
971 | if (local->scanning) | |
972 | return; | |
973 | ||
974 | /* | |
975 | * ieee80211_queue_work() should have picked up most cases, | |
976 | * here we'll pick the rest. | |
977 | */ | |
978 | if (WARN(local->suspended, | |
979 | "interface work scheduled while going to suspend\n")) | |
980 | return; | |
981 | ||
982 | /* first process frames */ | |
983 | while ((skb = skb_dequeue(&sdata->skb_queue))) { | |
bed7ee6e JB |
984 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
985 | ||
c1475ca9 JB |
986 | if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_START) { |
987 | ra_tid = (void *)&skb->cb; | |
988 | ieee80211_start_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
989 | ra_tid->tid); | |
990 | } else if (skb->pkt_type == IEEE80211_SDATA_QUEUE_AGG_STOP) { | |
991 | ra_tid = (void *)&skb->cb; | |
992 | ieee80211_stop_tx_ba_cb(&sdata->vif, ra_tid->ra, | |
993 | ra_tid->tid); | |
994 | } else if (ieee80211_is_action(mgmt->frame_control) && | |
995 | mgmt->u.action.category == WLAN_CATEGORY_BACK) { | |
bed7ee6e | 996 | int len = skb->len; |
bed7ee6e | 997 | |
a93e3644 | 998 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 999 | sta = sta_info_get_bss(sdata, mgmt->sa); |
bed7ee6e JB |
1000 | if (sta) { |
1001 | switch (mgmt->u.action.u.addba_req.action_code) { | |
1002 | case WLAN_ACTION_ADDBA_REQ: | |
1003 | ieee80211_process_addba_request( | |
1004 | local, sta, mgmt, len); | |
1005 | break; | |
1006 | case WLAN_ACTION_ADDBA_RESP: | |
1007 | ieee80211_process_addba_resp(local, sta, | |
1008 | mgmt, len); | |
1009 | break; | |
1010 | case WLAN_ACTION_DELBA: | |
1011 | ieee80211_process_delba(sdata, sta, | |
1012 | mgmt, len); | |
1013 | break; | |
1014 | default: | |
1015 | WARN_ON(1); | |
1016 | break; | |
1017 | } | |
1018 | } | |
a93e3644 | 1019 | mutex_unlock(&local->sta_mtx); |
344eec67 JB |
1020 | } else if (ieee80211_is_data_qos(mgmt->frame_control)) { |
1021 | struct ieee80211_hdr *hdr = (void *)mgmt; | |
1022 | /* | |
1023 | * So the frame isn't mgmt, but frame_control | |
1024 | * is at the right place anyway, of course, so | |
1025 | * the if statement is correct. | |
1026 | * | |
1027 | * Warn if we have other data frame types here, | |
1028 | * they must not get here. | |
1029 | */ | |
1030 | WARN_ON(hdr->frame_control & | |
1031 | cpu_to_le16(IEEE80211_STYPE_NULLFUNC)); | |
1032 | WARN_ON(!(hdr->seq_ctrl & | |
1033 | cpu_to_le16(IEEE80211_SCTL_FRAG))); | |
1034 | /* | |
1035 | * This was a fragment of a frame, received while | |
1036 | * a block-ack session was active. That cannot be | |
1037 | * right, so terminate the session. | |
1038 | */ | |
a93e3644 | 1039 | mutex_lock(&local->sta_mtx); |
875ae5f6 | 1040 | sta = sta_info_get_bss(sdata, mgmt->sa); |
344eec67 JB |
1041 | if (sta) { |
1042 | u16 tid = *ieee80211_get_qos_ctl(hdr) & | |
1043 | IEEE80211_QOS_CTL_TID_MASK; | |
1044 | ||
1045 | __ieee80211_stop_rx_ba_session( | |
1046 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 JB |
1047 | WLAN_REASON_QSTA_REQUIRE_SETUP, |
1048 | true); | |
344eec67 | 1049 | } |
a93e3644 | 1050 | mutex_unlock(&local->sta_mtx); |
bed7ee6e | 1051 | } else switch (sdata->vif.type) { |
1fa57d01 JB |
1052 | case NL80211_IFTYPE_STATION: |
1053 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
1054 | break; | |
1055 | case NL80211_IFTYPE_ADHOC: | |
1056 | ieee80211_ibss_rx_queued_mgmt(sdata, skb); | |
1057 | break; | |
1058 | case NL80211_IFTYPE_MESH_POINT: | |
1059 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1060 | break; | |
1061 | ieee80211_mesh_rx_queued_mgmt(sdata, skb); | |
1062 | break; | |
1063 | default: | |
1064 | WARN(1, "frame for unexpected interface type"); | |
1fa57d01 JB |
1065 | break; |
1066 | } | |
36b3a628 JB |
1067 | |
1068 | kfree_skb(skb); | |
1fa57d01 JB |
1069 | } |
1070 | ||
1071 | /* then other type-dependent work */ | |
1072 | switch (sdata->vif.type) { | |
1073 | case NL80211_IFTYPE_STATION: | |
1074 | ieee80211_sta_work(sdata); | |
1075 | break; | |
1076 | case NL80211_IFTYPE_ADHOC: | |
1077 | ieee80211_ibss_work(sdata); | |
1078 | break; | |
1079 | case NL80211_IFTYPE_MESH_POINT: | |
1080 | if (!ieee80211_vif_is_mesh(&sdata->vif)) | |
1081 | break; | |
1082 | ieee80211_mesh_work(sdata); | |
1083 | break; | |
1084 | default: | |
1085 | break; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | ||
75636525 JB |
1090 | /* |
1091 | * Helper function to initialise an interface to a specific type. | |
1092 | */ | |
1093 | static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, | |
05c914fe | 1094 | enum nl80211_iftype type) |
f0706e82 | 1095 | { |
75636525 JB |
1096 | /* clear type-dependent union */ |
1097 | memset(&sdata->u, 0, sizeof(sdata->u)); | |
1098 | ||
1099 | /* and set some type-dependent values */ | |
1100 | sdata->vif.type = type; | |
2ca27bcf | 1101 | sdata->vif.p2p = false; |
587e729e | 1102 | sdata->dev->netdev_ops = &ieee80211_dataif_ops; |
60719ffd | 1103 | sdata->wdev.iftype = type; |
75636525 | 1104 | |
a621fa4d JB |
1105 | sdata->control_port_protocol = cpu_to_be16(ETH_P_PAE); |
1106 | sdata->control_port_no_encrypt = false; | |
1107 | ||
b53be792 SW |
1108 | sdata->noack_map = 0; |
1109 | ||
75636525 JB |
1110 | /* only monitor differs */ |
1111 | sdata->dev->type = ARPHRD_ETHER; | |
1112 | ||
35f20c14 | 1113 | skb_queue_head_init(&sdata->skb_queue); |
1fa57d01 | 1114 | INIT_WORK(&sdata->work, ieee80211_iface_work); |
35f20c14 | 1115 | |
75636525 | 1116 | switch (type) { |
2ca27bcf JB |
1117 | case NL80211_IFTYPE_P2P_GO: |
1118 | type = NL80211_IFTYPE_AP; | |
1119 | sdata->vif.type = type; | |
1120 | sdata->vif.p2p = true; | |
1121 | /* fall through */ | |
05c914fe | 1122 | case NL80211_IFTYPE_AP: |
75636525 JB |
1123 | skb_queue_head_init(&sdata->u.ap.ps_bc_buf); |
1124 | INIT_LIST_HEAD(&sdata->u.ap.vlans); | |
1125 | break; | |
2ca27bcf JB |
1126 | case NL80211_IFTYPE_P2P_CLIENT: |
1127 | type = NL80211_IFTYPE_STATION; | |
1128 | sdata->vif.type = type; | |
1129 | sdata->vif.p2p = true; | |
1130 | /* fall through */ | |
05c914fe | 1131 | case NL80211_IFTYPE_STATION: |
9c6bd790 | 1132 | ieee80211_sta_setup_sdata(sdata); |
472dbc45 | 1133 | break; |
46900298 JB |
1134 | case NL80211_IFTYPE_ADHOC: |
1135 | ieee80211_ibss_setup_sdata(sdata); | |
1136 | break; | |
05c914fe | 1137 | case NL80211_IFTYPE_MESH_POINT: |
75636525 JB |
1138 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
1139 | ieee80211_mesh_init_sdata(sdata); | |
1140 | break; | |
05c914fe | 1141 | case NL80211_IFTYPE_MONITOR: |
75636525 | 1142 | sdata->dev->type = ARPHRD_IEEE80211_RADIOTAP; |
587e729e | 1143 | sdata->dev->netdev_ops = &ieee80211_monitorif_ops; |
75636525 JB |
1144 | sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | |
1145 | MONITOR_FLAG_OTHER_BSS; | |
1146 | break; | |
05c914fe JB |
1147 | case NL80211_IFTYPE_WDS: |
1148 | case NL80211_IFTYPE_AP_VLAN: | |
75636525 | 1149 | break; |
98104fde JB |
1150 | case NL80211_IFTYPE_P2P_DEVICE: |
1151 | /* not yet supported */ | |
05c914fe | 1152 | case NL80211_IFTYPE_UNSPECIFIED: |
2e161f78 | 1153 | case NUM_NL80211_IFTYPES: |
75636525 JB |
1154 | BUG(); |
1155 | break; | |
1156 | } | |
1157 | ||
1158 | ieee80211_debugfs_add_netdev(sdata); | |
1159 | } | |
1160 | ||
34d4bc4d JB |
1161 | static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata, |
1162 | enum nl80211_iftype type) | |
1163 | { | |
1164 | struct ieee80211_local *local = sdata->local; | |
1165 | int ret, err; | |
2ca27bcf JB |
1166 | enum nl80211_iftype internal_type = type; |
1167 | bool p2p = false; | |
34d4bc4d JB |
1168 | |
1169 | ASSERT_RTNL(); | |
1170 | ||
1171 | if (!local->ops->change_interface) | |
1172 | return -EBUSY; | |
1173 | ||
1174 | switch (sdata->vif.type) { | |
1175 | case NL80211_IFTYPE_AP: | |
1176 | case NL80211_IFTYPE_STATION: | |
1177 | case NL80211_IFTYPE_ADHOC: | |
1178 | /* | |
1179 | * Could maybe also all others here? | |
1180 | * Just not sure how that interacts | |
1181 | * with the RX/config path e.g. for | |
1182 | * mesh. | |
1183 | */ | |
1184 | break; | |
1185 | default: | |
1186 | return -EBUSY; | |
1187 | } | |
1188 | ||
1189 | switch (type) { | |
1190 | case NL80211_IFTYPE_AP: | |
1191 | case NL80211_IFTYPE_STATION: | |
1192 | case NL80211_IFTYPE_ADHOC: | |
1193 | /* | |
1194 | * Could probably support everything | |
1195 | * but WDS here (WDS do_open can fail | |
1196 | * under memory pressure, which this | |
1197 | * code isn't prepared to handle). | |
1198 | */ | |
1199 | break; | |
2ca27bcf JB |
1200 | case NL80211_IFTYPE_P2P_CLIENT: |
1201 | p2p = true; | |
1202 | internal_type = NL80211_IFTYPE_STATION; | |
1203 | break; | |
1204 | case NL80211_IFTYPE_P2P_GO: | |
1205 | p2p = true; | |
1206 | internal_type = NL80211_IFTYPE_AP; | |
1207 | break; | |
34d4bc4d JB |
1208 | default: |
1209 | return -EBUSY; | |
1210 | } | |
1211 | ||
2ca27bcf | 1212 | ret = ieee80211_check_concurrent_iface(sdata, internal_type); |
34d4bc4d JB |
1213 | if (ret) |
1214 | return ret; | |
1215 | ||
1216 | ieee80211_do_stop(sdata, false); | |
1217 | ||
1218 | ieee80211_teardown_sdata(sdata->dev); | |
1219 | ||
2ca27bcf | 1220 | ret = drv_change_interface(local, sdata, internal_type, p2p); |
34d4bc4d JB |
1221 | if (ret) |
1222 | type = sdata->vif.type; | |
1223 | ||
3a25a8c8 JB |
1224 | /* |
1225 | * Ignore return value here, there's not much we can do since | |
1226 | * the driver changed the interface type internally already. | |
1227 | * The warnings will hopefully make driver authors fix it :-) | |
1228 | */ | |
1229 | ieee80211_check_queues(sdata); | |
1230 | ||
34d4bc4d JB |
1231 | ieee80211_setup_sdata(sdata, type); |
1232 | ||
1233 | err = ieee80211_do_open(sdata->dev, false); | |
1234 | WARN(err, "type change: do_open returned %d", err); | |
1235 | ||
1236 | return ret; | |
1237 | } | |
1238 | ||
f3947e2d | 1239 | int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, |
05c914fe | 1240 | enum nl80211_iftype type) |
75636525 | 1241 | { |
34d4bc4d JB |
1242 | int ret; |
1243 | ||
f3947e2d JB |
1244 | ASSERT_RTNL(); |
1245 | ||
2ca27bcf | 1246 | if (type == ieee80211_vif_type_p2p(&sdata->vif)) |
f3947e2d JB |
1247 | return 0; |
1248 | ||
e60c7744 | 1249 | /* Setting ad-hoc mode on non-IBSS channel is not supported. */ |
dcebf45c PR |
1250 | if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS && |
1251 | type == NL80211_IFTYPE_ADHOC) | |
e60c7744 JB |
1252 | return -EOPNOTSUPP; |
1253 | ||
34d4bc4d JB |
1254 | if (ieee80211_sdata_running(sdata)) { |
1255 | ret = ieee80211_runtime_change_iftype(sdata, type); | |
1256 | if (ret) | |
1257 | return ret; | |
1258 | } else { | |
1259 | /* Purge and reset type-dependent state. */ | |
1260 | ieee80211_teardown_sdata(sdata->dev); | |
1261 | ieee80211_setup_sdata(sdata, type); | |
1262 | } | |
75636525 JB |
1263 | |
1264 | /* reset some values that shouldn't be kept across type changes */ | |
bda3933a | 1265 | sdata->vif.bss_conf.basic_rates = |
96dd22ac | 1266 | ieee80211_mandatory_rates(sdata->local, |
679ef4ea | 1267 | sdata->local->oper_channel->band); |
75636525 | 1268 | sdata->drop_unencrypted = 0; |
9bc383de JB |
1269 | if (type == NL80211_IFTYPE_STATION) |
1270 | sdata->u.mgd.use_4addr = false; | |
f3947e2d JB |
1271 | |
1272 | return 0; | |
f0706e82 JB |
1273 | } |
1274 | ||
fa9029f8 JB |
1275 | static void ieee80211_assign_perm_addr(struct ieee80211_local *local, |
1276 | struct net_device *dev, | |
1277 | enum nl80211_iftype type) | |
1278 | { | |
1279 | struct ieee80211_sub_if_data *sdata; | |
1280 | u64 mask, start, addr, val, inc; | |
1281 | u8 *m; | |
1282 | u8 tmp_addr[ETH_ALEN]; | |
1283 | int i; | |
1284 | ||
1285 | /* default ... something at least */ | |
1286 | memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1287 | ||
1288 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask) && | |
1289 | local->hw.wiphy->n_addresses <= 1) | |
1290 | return; | |
1291 | ||
1292 | ||
1293 | mutex_lock(&local->iflist_mtx); | |
1294 | ||
1295 | switch (type) { | |
1296 | case NL80211_IFTYPE_MONITOR: | |
1297 | /* doesn't matter */ | |
1298 | break; | |
1299 | case NL80211_IFTYPE_WDS: | |
1300 | case NL80211_IFTYPE_AP_VLAN: | |
1301 | /* match up with an AP interface */ | |
1302 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1303 | if (sdata->vif.type != NL80211_IFTYPE_AP) | |
1304 | continue; | |
1305 | memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN); | |
1306 | break; | |
1307 | } | |
1308 | /* keep default if no AP interface present */ | |
1309 | break; | |
1310 | default: | |
1311 | /* assign a new address if possible -- try n_addresses first */ | |
1312 | for (i = 0; i < local->hw.wiphy->n_addresses; i++) { | |
1313 | bool used = false; | |
1314 | ||
1315 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1316 | if (memcmp(local->hw.wiphy->addresses[i].addr, | |
1317 | sdata->vif.addr, ETH_ALEN) == 0) { | |
1318 | used = true; | |
1319 | break; | |
1320 | } | |
1321 | } | |
1322 | ||
1323 | if (!used) { | |
1324 | memcpy(dev->perm_addr, | |
1325 | local->hw.wiphy->addresses[i].addr, | |
1326 | ETH_ALEN); | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | /* try mask if available */ | |
1332 | if (is_zero_ether_addr(local->hw.wiphy->addr_mask)) | |
1333 | break; | |
1334 | ||
1335 | m = local->hw.wiphy->addr_mask; | |
1336 | mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1337 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1338 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1339 | ||
1340 | if (__ffs64(mask) + hweight64(mask) != fls64(mask)) { | |
1341 | /* not a contiguous mask ... not handled now! */ | |
bdcbd8e0 | 1342 | pr_info("not contiguous\n"); |
fa9029f8 JB |
1343 | break; |
1344 | } | |
1345 | ||
1346 | m = local->hw.wiphy->perm_addr; | |
1347 | start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) | | |
1348 | ((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) | | |
1349 | ((u64)m[4] << 1*8) | ((u64)m[5] << 0*8); | |
1350 | ||
1351 | inc = 1ULL<<__ffs64(mask); | |
1352 | val = (start & mask); | |
1353 | addr = (start & ~mask) | (val & mask); | |
1354 | do { | |
1355 | bool used = false; | |
1356 | ||
1357 | tmp_addr[5] = addr >> 0*8; | |
1358 | tmp_addr[4] = addr >> 1*8; | |
1359 | tmp_addr[3] = addr >> 2*8; | |
1360 | tmp_addr[2] = addr >> 3*8; | |
1361 | tmp_addr[1] = addr >> 4*8; | |
1362 | tmp_addr[0] = addr >> 5*8; | |
1363 | ||
1364 | val += inc; | |
1365 | ||
1366 | list_for_each_entry(sdata, &local->interfaces, list) { | |
1367 | if (memcmp(tmp_addr, sdata->vif.addr, | |
1368 | ETH_ALEN) == 0) { | |
1369 | used = true; | |
1370 | break; | |
1371 | } | |
1372 | } | |
1373 | ||
1374 | if (!used) { | |
1375 | memcpy(dev->perm_addr, tmp_addr, ETH_ALEN); | |
1376 | break; | |
1377 | } | |
1378 | addr = (start & ~mask) | (val & mask); | |
1379 | } while (addr != start); | |
1380 | ||
1381 | break; | |
1382 | } | |
1383 | ||
1384 | mutex_unlock(&local->iflist_mtx); | |
1385 | } | |
1386 | ||
3e122be0 | 1387 | int ieee80211_if_add(struct ieee80211_local *local, const char *name, |
84efbb84 | 1388 | struct wireless_dev **new_wdev, enum nl80211_iftype type, |
ee385855 | 1389 | struct vif_params *params) |
f0706e82 JB |
1390 | { |
1391 | struct net_device *ndev; | |
f0706e82 | 1392 | struct ieee80211_sub_if_data *sdata = NULL; |
75636525 | 1393 | int ret, i; |
ded81f6b | 1394 | int txqs = 1; |
f0706e82 JB |
1395 | |
1396 | ASSERT_RTNL(); | |
75636525 | 1397 | |
ded81f6b JB |
1398 | if (local->hw.queues >= IEEE80211_NUM_ACS) |
1399 | txqs = IEEE80211_NUM_ACS; | |
1400 | ||
55d99059 | 1401 | ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size, |
ded81f6b | 1402 | name, ieee80211_if_setup, txqs, 1); |
f0706e82 JB |
1403 | if (!ndev) |
1404 | return -ENOMEM; | |
a272a720 | 1405 | dev_net_set(ndev, wiphy_net(local->hw.wiphy)); |
f0706e82 | 1406 | |
f3994ece JB |
1407 | ndev->needed_headroom = local->tx_headroom + |
1408 | 4*6 /* four MAC addresses */ | |
1409 | + 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */ | |
1410 | + 6 /* mesh */ | |
1411 | + 8 /* rfc1042/bridge tunnel */ | |
1412 | - ETH_HLEN /* ethernet hard_header_len */ | |
1413 | + IEEE80211_ENCRYPT_HEADROOM; | |
1414 | ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM; | |
1415 | ||
59e7e707 TLSC |
1416 | ret = dev_alloc_name(ndev, ndev->name); |
1417 | if (ret < 0) | |
1418 | goto fail; | |
1419 | ||
fa9029f8 JB |
1420 | ieee80211_assign_perm_addr(local, ndev, type); |
1421 | memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN); | |
f0706e82 JB |
1422 | SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy)); |
1423 | ||
3e122be0 JB |
1424 | /* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */ |
1425 | sdata = netdev_priv(ndev); | |
f0706e82 | 1426 | ndev->ieee80211_ptr = &sdata->wdev; |
47846c9b JB |
1427 | memcpy(sdata->vif.addr, ndev->dev_addr, ETH_ALEN); |
1428 | memcpy(sdata->name, ndev->name, IFNAMSIZ); | |
75636525 JB |
1429 | |
1430 | /* initialise type-independent data */ | |
f0706e82 | 1431 | sdata->wdev.wiphy = local->hw.wiphy; |
f0706e82 | 1432 | sdata->local = local; |
75636525 | 1433 | sdata->dev = ndev; |
68542962 JO |
1434 | #ifdef CONFIG_INET |
1435 | sdata->arp_filter_state = true; | |
1436 | #endif | |
75636525 JB |
1437 | |
1438 | for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) | |
1439 | skb_queue_head_init(&sdata->fragments[i].skb_list); | |
1440 | ||
1441 | INIT_LIST_HEAD(&sdata->key_list); | |
1442 | ||
37eb0b16 JM |
1443 | for (i = 0; i < IEEE80211_NUM_BANDS; i++) { |
1444 | struct ieee80211_supported_band *sband; | |
1445 | sband = local->hw.wiphy->bands[i]; | |
1446 | sdata->rc_rateidx_mask[i] = | |
1447 | sband ? (1 << sband->n_bitrates) - 1 : 0; | |
19468413 SW |
1448 | if (sband) |
1449 | memcpy(sdata->rc_rateidx_mcs_mask[i], | |
1450 | sband->ht_cap.mcs.rx_mask, | |
1451 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
1452 | else | |
1453 | memset(sdata->rc_rateidx_mcs_mask[i], 0, | |
1454 | sizeof(sdata->rc_rateidx_mcs_mask[i])); | |
37eb0b16 | 1455 | } |
75636525 | 1456 | |
3a25a8c8 JB |
1457 | ieee80211_set_default_queues(sdata); |
1458 | ||
75636525 JB |
1459 | /* setup type-dependent data */ |
1460 | ieee80211_setup_sdata(sdata, type); | |
f0706e82 | 1461 | |
9bc383de JB |
1462 | if (params) { |
1463 | ndev->ieee80211_ptr->use_4addr = params->use_4addr; | |
1464 | if (type == NL80211_IFTYPE_STATION) | |
1465 | sdata->u.mgd.use_4addr = params->use_4addr; | |
1466 | } | |
1467 | ||
72d78728 AN |
1468 | ndev->features |= local->hw.netdev_features; |
1469 | ||
f0706e82 JB |
1470 | ret = register_netdevice(ndev); |
1471 | if (ret) | |
1472 | goto fail; | |
1473 | ||
c771c9d8 | 1474 | mutex_lock(&local->iflist_mtx); |
79010420 | 1475 | list_add_tail_rcu(&sdata->list, &local->interfaces); |
c771c9d8 | 1476 | mutex_unlock(&local->iflist_mtx); |
79010420 | 1477 | |
84efbb84 JB |
1478 | if (new_wdev) |
1479 | *new_wdev = &sdata->wdev; | |
f0706e82 | 1480 | |
f0706e82 JB |
1481 | return 0; |
1482 | ||
75636525 | 1483 | fail: |
f0706e82 JB |
1484 | free_netdev(ndev); |
1485 | return ret; | |
1486 | } | |
1487 | ||
f698d856 | 1488 | void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1489 | { |
f0706e82 | 1490 | ASSERT_RTNL(); |
11a843b7 | 1491 | |
c771c9d8 | 1492 | mutex_lock(&sdata->local->iflist_mtx); |
75636525 | 1493 | list_del_rcu(&sdata->list); |
c771c9d8 JB |
1494 | mutex_unlock(&sdata->local->iflist_mtx); |
1495 | ||
75636525 | 1496 | synchronize_rcu(); |
f698d856 | 1497 | unregister_netdevice(sdata->dev); |
f0706e82 JB |
1498 | } |
1499 | ||
75636525 JB |
1500 | /* |
1501 | * Remove all interfaces, may only be called at hardware unregistration | |
1502 | * time because it doesn't do RCU-safe list removals. | |
1503 | */ | |
1504 | void ieee80211_remove_interfaces(struct ieee80211_local *local) | |
f0706e82 | 1505 | { |
75636525 | 1506 | struct ieee80211_sub_if_data *sdata, *tmp; |
efe117ab | 1507 | LIST_HEAD(unreg_list); |
f0706e82 JB |
1508 | |
1509 | ASSERT_RTNL(); | |
1510 | ||
efe117ab | 1511 | mutex_lock(&local->iflist_mtx); |
75636525 JB |
1512 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { |
1513 | list_del(&sdata->list); | |
c771c9d8 | 1514 | |
efe117ab | 1515 | unregister_netdevice_queue(sdata->dev, &unreg_list); |
f0706e82 | 1516 | } |
efe117ab ED |
1517 | mutex_unlock(&local->iflist_mtx); |
1518 | unregister_netdevice_many(&unreg_list); | |
5f04d506 | 1519 | list_del(&unreg_list); |
f0706e82 | 1520 | } |
5cff20e6 | 1521 | |
47846c9b JB |
1522 | static int netdev_notify(struct notifier_block *nb, |
1523 | unsigned long state, | |
1524 | void *ndev) | |
1525 | { | |
1526 | struct net_device *dev = ndev; | |
1527 | struct ieee80211_sub_if_data *sdata; | |
1528 | ||
1529 | if (state != NETDEV_CHANGENAME) | |
1530 | return 0; | |
1531 | ||
1532 | if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy) | |
1533 | return 0; | |
1534 | ||
1535 | if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) | |
1536 | return 0; | |
1537 | ||
1538 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1539 | ||
2f5265e6 | 1540 | memcpy(sdata->name, dev->name, IFNAMSIZ); |
47846c9b JB |
1541 | |
1542 | ieee80211_debugfs_rename_netdev(sdata); | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | static struct notifier_block mac80211_netdev_notifier = { | |
1547 | .notifier_call = netdev_notify, | |
1548 | }; | |
1549 | ||
1550 | int ieee80211_iface_init(void) | |
1551 | { | |
1552 | return register_netdevice_notifier(&mac80211_netdev_notifier); | |
1553 | } | |
1554 | ||
1555 | void ieee80211_iface_exit(void) | |
1556 | { | |
1557 | unregister_netdevice_notifier(&mac80211_netdev_notifier); | |
1558 | } |