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1 | /* | |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/etherdevice.h> | |
19 | #include <linux/if_arp.h> | |
20 | #include <linux/rtnetlink.h> | |
21 | #include <linux/bitmap.h> | |
22 | #include <linux/pm_qos.h> | |
23 | #include <linux/inetdevice.h> | |
24 | #include <net/net_namespace.h> | |
25 | #include <net/cfg80211.h> | |
26 | ||
27 | #include "ieee80211_i.h" | |
28 | #include "driver-ops.h" | |
29 | #include "rate.h" | |
30 | #include "mesh.h" | |
31 | #include "wep.h" | |
32 | #include "led.h" | |
33 | #include "cfg.h" | |
34 | #include "debugfs.h" | |
35 | ||
36 | static struct lock_class_key ieee80211_rx_skb_queue_class; | |
37 | ||
38 | void ieee80211_configure_filter(struct ieee80211_local *local) | |
39 | { | |
40 | u64 mc; | |
41 | unsigned int changed_flags; | |
42 | unsigned int new_flags = 0; | |
43 | ||
44 | if (atomic_read(&local->iff_promiscs)) | |
45 | new_flags |= FIF_PROMISC_IN_BSS; | |
46 | ||
47 | if (atomic_read(&local->iff_allmultis)) | |
48 | new_flags |= FIF_ALLMULTI; | |
49 | ||
50 | if (local->monitors || local->scanning) | |
51 | new_flags |= FIF_BCN_PRBRESP_PROMISC; | |
52 | ||
53 | if (local->fif_probe_req || local->probe_req_reg) | |
54 | new_flags |= FIF_PROBE_REQ; | |
55 | ||
56 | if (local->fif_fcsfail) | |
57 | new_flags |= FIF_FCSFAIL; | |
58 | ||
59 | if (local->fif_plcpfail) | |
60 | new_flags |= FIF_PLCPFAIL; | |
61 | ||
62 | if (local->fif_control) | |
63 | new_flags |= FIF_CONTROL; | |
64 | ||
65 | if (local->fif_other_bss) | |
66 | new_flags |= FIF_OTHER_BSS; | |
67 | ||
68 | if (local->fif_pspoll) | |
69 | new_flags |= FIF_PSPOLL; | |
70 | ||
71 | spin_lock_bh(&local->filter_lock); | |
72 | changed_flags = local->filter_flags ^ new_flags; | |
73 | ||
74 | mc = drv_prepare_multicast(local, &local->mc_list); | |
75 | spin_unlock_bh(&local->filter_lock); | |
76 | ||
77 | /* be a bit nasty */ | |
78 | new_flags |= (1<<31); | |
79 | ||
80 | drv_configure_filter(local, changed_flags, &new_flags, mc); | |
81 | ||
82 | WARN_ON(new_flags & (1<<31)); | |
83 | ||
84 | local->filter_flags = new_flags & ~(1<<31); | |
85 | } | |
86 | ||
87 | static void ieee80211_reconfig_filter(struct work_struct *work) | |
88 | { | |
89 | struct ieee80211_local *local = | |
90 | container_of(work, struct ieee80211_local, reconfig_filter); | |
91 | ||
92 | ieee80211_configure_filter(local); | |
93 | } | |
94 | ||
95 | /* | |
96 | * Returns true if we are logically configured to be on | |
97 | * the operating channel AND the hardware-conf is currently | |
98 | * configured on the operating channel. Compares channel-type | |
99 | * as well. | |
100 | */ | |
101 | bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local) | |
102 | { | |
103 | struct ieee80211_channel *chan; | |
104 | enum nl80211_channel_type channel_type; | |
105 | ||
106 | /* This logic needs to match logic in ieee80211_hw_config */ | |
107 | if (local->scan_channel) { | |
108 | chan = local->scan_channel; | |
109 | /* If scanning on oper channel, use whatever channel-type | |
110 | * is currently in use. | |
111 | */ | |
112 | if (chan == local->oper_channel) | |
113 | channel_type = local->_oper_channel_type; | |
114 | else | |
115 | channel_type = NL80211_CHAN_NO_HT; | |
116 | } else if (local->tmp_channel) { | |
117 | chan = local->tmp_channel; | |
118 | channel_type = local->tmp_channel_type; | |
119 | } else { | |
120 | chan = local->oper_channel; | |
121 | channel_type = local->_oper_channel_type; | |
122 | } | |
123 | ||
124 | if (chan != local->oper_channel || | |
125 | channel_type != local->_oper_channel_type) | |
126 | return false; | |
127 | ||
128 | /* Check current hardware-config against oper_channel. */ | |
129 | if (local->oper_channel != local->hw.conf.channel || | |
130 | local->_oper_channel_type != local->hw.conf.channel_type) | |
131 | return false; | |
132 | ||
133 | return true; | |
134 | } | |
135 | ||
136 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
137 | { | |
138 | struct ieee80211_channel *chan; | |
139 | int ret = 0; | |
140 | int power; | |
141 | enum nl80211_channel_type channel_type; | |
142 | u32 offchannel_flag; | |
143 | ||
144 | might_sleep(); | |
145 | ||
146 | /* If this off-channel logic ever changes, ieee80211_on_oper_channel | |
147 | * may need to change as well. | |
148 | */ | |
149 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; | |
150 | if (local->scan_channel) { | |
151 | chan = local->scan_channel; | |
152 | /* If scanning on oper channel, use whatever channel-type | |
153 | * is currently in use. | |
154 | */ | |
155 | if (chan == local->oper_channel) | |
156 | channel_type = local->_oper_channel_type; | |
157 | else | |
158 | channel_type = NL80211_CHAN_NO_HT; | |
159 | } else if (local->tmp_channel) { | |
160 | chan = local->tmp_channel; | |
161 | channel_type = local->tmp_channel_type; | |
162 | } else { | |
163 | chan = local->oper_channel; | |
164 | channel_type = local->_oper_channel_type; | |
165 | } | |
166 | ||
167 | if (chan != local->oper_channel || | |
168 | channel_type != local->_oper_channel_type) | |
169 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; | |
170 | else | |
171 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
172 | ||
173 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; | |
174 | ||
175 | if (offchannel_flag || chan != local->hw.conf.channel || | |
176 | channel_type != local->hw.conf.channel_type) { | |
177 | local->hw.conf.channel = chan; | |
178 | local->hw.conf.channel_type = channel_type; | |
179 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; | |
180 | } | |
181 | ||
182 | if (!conf_is_ht(&local->hw.conf)) { | |
183 | /* | |
184 | * mac80211.h documents that this is only valid | |
185 | * when the channel is set to an HT type, and | |
186 | * that otherwise STATIC is used. | |
187 | */ | |
188 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
189 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
190 | local->hw.conf.smps_mode = local->smps_mode; | |
191 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
192 | } | |
193 | ||
194 | if ((local->scanning & SCAN_SW_SCANNING) || | |
195 | (local->scanning & SCAN_HW_SCANNING)) | |
196 | power = chan->max_power; | |
197 | else | |
198 | power = local->power_constr_level ? | |
199 | (chan->max_power - local->power_constr_level) : | |
200 | chan->max_power; | |
201 | ||
202 | if (local->user_power_level >= 0) | |
203 | power = min(power, local->user_power_level); | |
204 | ||
205 | if (local->hw.conf.power_level != power) { | |
206 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
207 | local->hw.conf.power_level = power; | |
208 | } | |
209 | ||
210 | if (changed && local->open_count) { | |
211 | ret = drv_config(local, changed); | |
212 | /* | |
213 | * Goal: | |
214 | * HW reconfiguration should never fail, the driver has told | |
215 | * us what it can support so it should live up to that promise. | |
216 | * | |
217 | * Current status: | |
218 | * rfkill is not integrated with mac80211 and a | |
219 | * configuration command can thus fail if hardware rfkill | |
220 | * is enabled | |
221 | * | |
222 | * FIXME: integrate rfkill with mac80211 and then add this | |
223 | * WARN_ON() back | |
224 | * | |
225 | */ | |
226 | /* WARN_ON(ret); */ | |
227 | } | |
228 | ||
229 | return ret; | |
230 | } | |
231 | ||
232 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, | |
233 | u32 changed) | |
234 | { | |
235 | struct ieee80211_local *local = sdata->local; | |
236 | static const u8 zero[ETH_ALEN] = { 0 }; | |
237 | ||
238 | if (!changed) | |
239 | return; | |
240 | ||
241 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { | |
242 | /* | |
243 | * While not associated, claim a BSSID of all-zeroes | |
244 | * so that drivers don't do any weird things with the | |
245 | * BSSID at that time. | |
246 | */ | |
247 | if (sdata->vif.bss_conf.assoc) | |
248 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
249 | else | |
250 | sdata->vif.bss_conf.bssid = zero; | |
251 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
252 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; | |
253 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
254 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
255 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) | |
256 | sdata->vif.bss_conf.bssid = NULL; | |
257 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
258 | sdata->vif.bss_conf.bssid = zero; | |
259 | } else { | |
260 | WARN_ON(1); | |
261 | return; | |
262 | } | |
263 | ||
264 | switch (sdata->vif.type) { | |
265 | case NL80211_IFTYPE_AP: | |
266 | case NL80211_IFTYPE_ADHOC: | |
267 | case NL80211_IFTYPE_WDS: | |
268 | case NL80211_IFTYPE_MESH_POINT: | |
269 | break; | |
270 | default: | |
271 | /* do not warn to simplify caller in scan.c */ | |
272 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
273 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
274 | return; | |
275 | break; | |
276 | } | |
277 | ||
278 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
279 | if (local->quiescing || !ieee80211_sdata_running(sdata) || | |
280 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { | |
281 | sdata->vif.bss_conf.enable_beacon = false; | |
282 | } else { | |
283 | /* | |
284 | * Beacon should be enabled, but AP mode must | |
285 | * check whether there is a beacon configured. | |
286 | */ | |
287 | switch (sdata->vif.type) { | |
288 | case NL80211_IFTYPE_AP: | |
289 | sdata->vif.bss_conf.enable_beacon = | |
290 | !!sdata->u.ap.beacon; | |
291 | break; | |
292 | case NL80211_IFTYPE_ADHOC: | |
293 | sdata->vif.bss_conf.enable_beacon = | |
294 | !!sdata->u.ibss.presp; | |
295 | break; | |
296 | #ifdef CONFIG_MAC80211_MESH | |
297 | case NL80211_IFTYPE_MESH_POINT: | |
298 | sdata->vif.bss_conf.enable_beacon = | |
299 | !!sdata->u.mesh.mesh_id_len; | |
300 | break; | |
301 | #endif | |
302 | default: | |
303 | /* not reached */ | |
304 | WARN_ON(1); | |
305 | break; | |
306 | } | |
307 | } | |
308 | } | |
309 | ||
310 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); | |
311 | } | |
312 | ||
313 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) | |
314 | { | |
315 | sdata->vif.bss_conf.use_cts_prot = false; | |
316 | sdata->vif.bss_conf.use_short_preamble = false; | |
317 | sdata->vif.bss_conf.use_short_slot = false; | |
318 | return BSS_CHANGED_ERP_CTS_PROT | | |
319 | BSS_CHANGED_ERP_PREAMBLE | | |
320 | BSS_CHANGED_ERP_SLOT; | |
321 | } | |
322 | ||
323 | static void ieee80211_tasklet_handler(unsigned long data) | |
324 | { | |
325 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
326 | struct sta_info *sta, *tmp; | |
327 | struct skb_eosp_msg_data *eosp_data; | |
328 | struct sk_buff *skb; | |
329 | ||
330 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
331 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
332 | switch (skb->pkt_type) { | |
333 | case IEEE80211_RX_MSG: | |
334 | /* Clear skb->pkt_type in order to not confuse kernel | |
335 | * netstack. */ | |
336 | skb->pkt_type = 0; | |
337 | ieee80211_rx(local_to_hw(local), skb); | |
338 | break; | |
339 | case IEEE80211_TX_STATUS_MSG: | |
340 | skb->pkt_type = 0; | |
341 | ieee80211_tx_status(local_to_hw(local), skb); | |
342 | break; | |
343 | case IEEE80211_EOSP_MSG: | |
344 | eosp_data = (void *)skb->cb; | |
345 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
346 | /* skip wrong virtual interface */ | |
347 | if (memcmp(eosp_data->iface, | |
348 | sta->sdata->vif.addr, ETH_ALEN)) | |
349 | continue; | |
350 | clear_sta_flag(sta, WLAN_STA_SP); | |
351 | break; | |
352 | } | |
353 | dev_kfree_skb(skb); | |
354 | break; | |
355 | default: | |
356 | WARN(1, "mac80211: Packet is of unknown type %d\n", | |
357 | skb->pkt_type); | |
358 | dev_kfree_skb(skb); | |
359 | break; | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
364 | static void ieee80211_restart_work(struct work_struct *work) | |
365 | { | |
366 | struct ieee80211_local *local = | |
367 | container_of(work, struct ieee80211_local, restart_work); | |
368 | ||
369 | /* wait for scan work complete */ | |
370 | flush_workqueue(local->workqueue); | |
371 | ||
372 | mutex_lock(&local->mtx); | |
373 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || | |
374 | local->sched_scanning, | |
375 | "%s called with hardware scan in progress\n", __func__); | |
376 | mutex_unlock(&local->mtx); | |
377 | ||
378 | rtnl_lock(); | |
379 | ieee80211_scan_cancel(local); | |
380 | ieee80211_reconfig(local); | |
381 | rtnl_unlock(); | |
382 | } | |
383 | ||
384 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
385 | { | |
386 | struct ieee80211_local *local = hw_to_local(hw); | |
387 | ||
388 | trace_api_restart_hw(local); | |
389 | ||
390 | wiphy_info(hw->wiphy, | |
391 | "Hardware restart was requested\n"); | |
392 | ||
393 | /* use this reason, ieee80211_reconfig will unblock it */ | |
394 | ieee80211_stop_queues_by_reason(hw, | |
395 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
396 | ||
397 | schedule_work(&local->restart_work); | |
398 | } | |
399 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
400 | ||
401 | static void ieee80211_recalc_smps_work(struct work_struct *work) | |
402 | { | |
403 | struct ieee80211_local *local = | |
404 | container_of(work, struct ieee80211_local, recalc_smps); | |
405 | ||
406 | mutex_lock(&local->iflist_mtx); | |
407 | ieee80211_recalc_smps(local); | |
408 | mutex_unlock(&local->iflist_mtx); | |
409 | } | |
410 | ||
411 | #ifdef CONFIG_INET | |
412 | static int ieee80211_ifa_changed(struct notifier_block *nb, | |
413 | unsigned long data, void *arg) | |
414 | { | |
415 | struct in_ifaddr *ifa = arg; | |
416 | struct ieee80211_local *local = | |
417 | container_of(nb, struct ieee80211_local, | |
418 | ifa_notifier); | |
419 | struct net_device *ndev = ifa->ifa_dev->dev; | |
420 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
421 | struct in_device *idev; | |
422 | struct ieee80211_sub_if_data *sdata; | |
423 | struct ieee80211_bss_conf *bss_conf; | |
424 | struct ieee80211_if_managed *ifmgd; | |
425 | int c = 0; | |
426 | ||
427 | /* Make sure it's our interface that got changed */ | |
428 | if (!wdev) | |
429 | return NOTIFY_DONE; | |
430 | ||
431 | if (wdev->wiphy != local->hw.wiphy) | |
432 | return NOTIFY_DONE; | |
433 | ||
434 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
435 | bss_conf = &sdata->vif.bss_conf; | |
436 | ||
437 | if (!ieee80211_sdata_running(sdata)) | |
438 | return NOTIFY_DONE; | |
439 | ||
440 | /* ARP filtering is only supported in managed mode */ | |
441 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
442 | return NOTIFY_DONE; | |
443 | ||
444 | idev = __in_dev_get_rtnl(sdata->dev); | |
445 | if (!idev) | |
446 | return NOTIFY_DONE; | |
447 | ||
448 | ifmgd = &sdata->u.mgd; | |
449 | mutex_lock(&ifmgd->mtx); | |
450 | ||
451 | /* Copy the addresses to the bss_conf list */ | |
452 | ifa = idev->ifa_list; | |
453 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
454 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
455 | ifa = ifa->ifa_next; | |
456 | c++; | |
457 | } | |
458 | ||
459 | /* If not all addresses fit the list, disable filtering */ | |
460 | if (ifa) { | |
461 | sdata->arp_filter_state = false; | |
462 | c = 0; | |
463 | } else { | |
464 | sdata->arp_filter_state = true; | |
465 | } | |
466 | bss_conf->arp_addr_cnt = c; | |
467 | ||
468 | /* Configure driver only if associated */ | |
469 | if (ifmgd->associated) { | |
470 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
471 | ieee80211_bss_info_change_notify(sdata, | |
472 | BSS_CHANGED_ARP_FILTER); | |
473 | } | |
474 | ||
475 | mutex_unlock(&ifmgd->mtx); | |
476 | ||
477 | return NOTIFY_DONE; | |
478 | } | |
479 | #endif | |
480 | ||
481 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) | |
482 | { | |
483 | struct ieee80211_local *local = | |
484 | container_of(napi, struct ieee80211_local, napi); | |
485 | ||
486 | return local->ops->napi_poll(&local->hw, budget); | |
487 | } | |
488 | ||
489 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
490 | { | |
491 | struct ieee80211_local *local = hw_to_local(hw); | |
492 | ||
493 | napi_schedule(&local->napi); | |
494 | } | |
495 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
496 | ||
497 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
498 | { | |
499 | struct ieee80211_local *local = hw_to_local(hw); | |
500 | ||
501 | napi_complete(&local->napi); | |
502 | } | |
503 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
504 | ||
505 | /* There isn't a lot of sense in it, but you can transmit anything you like */ | |
506 | static const struct ieee80211_txrx_stypes | |
507 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
508 | [NL80211_IFTYPE_ADHOC] = { | |
509 | .tx = 0xffff, | |
510 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
511 | }, | |
512 | [NL80211_IFTYPE_STATION] = { | |
513 | .tx = 0xffff, | |
514 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
515 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
516 | }, | |
517 | [NL80211_IFTYPE_AP] = { | |
518 | .tx = 0xffff, | |
519 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
520 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
521 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
522 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
523 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
524 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
525 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
526 | }, | |
527 | [NL80211_IFTYPE_AP_VLAN] = { | |
528 | /* copy AP */ | |
529 | .tx = 0xffff, | |
530 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
531 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
532 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
533 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
534 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
535 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
536 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
537 | }, | |
538 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
539 | .tx = 0xffff, | |
540 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
541 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
542 | }, | |
543 | [NL80211_IFTYPE_P2P_GO] = { | |
544 | .tx = 0xffff, | |
545 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
546 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
547 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
548 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
549 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
550 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
551 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
552 | }, | |
553 | [NL80211_IFTYPE_MESH_POINT] = { | |
554 | .tx = 0xffff, | |
555 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
556 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
557 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
558 | }, | |
559 | }; | |
560 | ||
561 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, | |
562 | const struct ieee80211_ops *ops) | |
563 | { | |
564 | struct ieee80211_local *local; | |
565 | int priv_size, i; | |
566 | struct wiphy *wiphy; | |
567 | ||
568 | /* Ensure 32-byte alignment of our private data and hw private data. | |
569 | * We use the wiphy priv data for both our ieee80211_local and for | |
570 | * the driver's private data | |
571 | * | |
572 | * In memory it'll be like this: | |
573 | * | |
574 | * +-------------------------+ | |
575 | * | struct wiphy | | |
576 | * +-------------------------+ | |
577 | * | struct ieee80211_local | | |
578 | * +-------------------------+ | |
579 | * | driver's private data | | |
580 | * +-------------------------+ | |
581 | * | |
582 | */ | |
583 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; | |
584 | ||
585 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
586 | ||
587 | if (!wiphy) | |
588 | return NULL; | |
589 | ||
590 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; | |
591 | ||
592 | wiphy->privid = mac80211_wiphy_privid; | |
593 | ||
594 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | | |
595 | WIPHY_FLAG_4ADDR_AP | | |
596 | WIPHY_FLAG_4ADDR_STATION | | |
597 | WIPHY_FLAG_REPORTS_OBSS; | |
598 | ||
599 | wiphy->features = NL80211_FEATURE_SK_TX_STATUS; | |
600 | ||
601 | if (!ops->set_key) | |
602 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
603 | ||
604 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); | |
605 | ||
606 | local = wiphy_priv(wiphy); | |
607 | ||
608 | local->hw.wiphy = wiphy; | |
609 | ||
610 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); | |
611 | ||
612 | BUG_ON(!ops->tx && !ops->tx_frags); | |
613 | BUG_ON(!ops->start); | |
614 | BUG_ON(!ops->stop); | |
615 | BUG_ON(!ops->config); | |
616 | BUG_ON(!ops->add_interface); | |
617 | BUG_ON(!ops->remove_interface); | |
618 | BUG_ON(!ops->configure_filter); | |
619 | local->ops = ops; | |
620 | ||
621 | /* set up some defaults */ | |
622 | local->hw.queues = 1; | |
623 | local->hw.max_rates = 1; | |
624 | local->hw.max_report_rates = 0; | |
625 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; | |
626 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; | |
627 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; | |
628 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
629 | local->user_power_level = -1; | |
630 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; | |
631 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
632 | ||
633 | INIT_LIST_HEAD(&local->interfaces); | |
634 | ||
635 | __hw_addr_init(&local->mc_list); | |
636 | ||
637 | mutex_init(&local->iflist_mtx); | |
638 | mutex_init(&local->mtx); | |
639 | ||
640 | mutex_init(&local->key_mtx); | |
641 | spin_lock_init(&local->filter_lock); | |
642 | spin_lock_init(&local->queue_stop_reason_lock); | |
643 | ||
644 | /* | |
645 | * The rx_skb_queue is only accessed from tasklets, | |
646 | * but other SKB queues are used from within IRQ | |
647 | * context. Therefore, this one needs a different | |
648 | * locking class so our direct, non-irq-safe use of | |
649 | * the queue's lock doesn't throw lockdep warnings. | |
650 | */ | |
651 | skb_queue_head_init_class(&local->rx_skb_queue, | |
652 | &ieee80211_rx_skb_queue_class); | |
653 | ||
654 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); | |
655 | ||
656 | ieee80211_work_init(local); | |
657 | ||
658 | INIT_WORK(&local->restart_work, ieee80211_restart_work); | |
659 | ||
660 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); | |
661 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); | |
662 | local->smps_mode = IEEE80211_SMPS_OFF; | |
663 | ||
664 | INIT_WORK(&local->dynamic_ps_enable_work, | |
665 | ieee80211_dynamic_ps_enable_work); | |
666 | INIT_WORK(&local->dynamic_ps_disable_work, | |
667 | ieee80211_dynamic_ps_disable_work); | |
668 | setup_timer(&local->dynamic_ps_timer, | |
669 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
670 | ||
671 | INIT_WORK(&local->sched_scan_stopped_work, | |
672 | ieee80211_sched_scan_stopped_work); | |
673 | ||
674 | spin_lock_init(&local->ack_status_lock); | |
675 | idr_init(&local->ack_status_frames); | |
676 | /* preallocate at least one entry */ | |
677 | idr_pre_get(&local->ack_status_frames, GFP_KERNEL); | |
678 | ||
679 | sta_info_init(local); | |
680 | ||
681 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { | |
682 | skb_queue_head_init(&local->pending[i]); | |
683 | atomic_set(&local->agg_queue_stop[i], 0); | |
684 | } | |
685 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
686 | (unsigned long)local); | |
687 | ||
688 | tasklet_init(&local->tasklet, | |
689 | ieee80211_tasklet_handler, | |
690 | (unsigned long) local); | |
691 | ||
692 | skb_queue_head_init(&local->skb_queue); | |
693 | skb_queue_head_init(&local->skb_queue_unreliable); | |
694 | ||
695 | /* init dummy netdev for use w/ NAPI */ | |
696 | init_dummy_netdev(&local->napi_dev); | |
697 | ||
698 | ieee80211_led_names(local); | |
699 | ||
700 | ieee80211_hw_roc_setup(local); | |
701 | ||
702 | return local_to_hw(local); | |
703 | } | |
704 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
705 | ||
706 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
707 | { | |
708 | struct ieee80211_local *local = hw_to_local(hw); | |
709 | int result, i; | |
710 | enum ieee80211_band band; | |
711 | int channels, max_bitrates; | |
712 | bool supp_ht; | |
713 | static const u32 cipher_suites[] = { | |
714 | /* keep WEP first, it may be removed below */ | |
715 | WLAN_CIPHER_SUITE_WEP40, | |
716 | WLAN_CIPHER_SUITE_WEP104, | |
717 | WLAN_CIPHER_SUITE_TKIP, | |
718 | WLAN_CIPHER_SUITE_CCMP, | |
719 | ||
720 | /* keep last -- depends on hw flags! */ | |
721 | WLAN_CIPHER_SUITE_AES_CMAC | |
722 | }; | |
723 | ||
724 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) | |
725 | #ifdef CONFIG_PM | |
726 | && (!local->ops->suspend || !local->ops->resume) | |
727 | #endif | |
728 | ) | |
729 | return -EINVAL; | |
730 | ||
731 | if (hw->max_report_rates == 0) | |
732 | hw->max_report_rates = hw->max_rates; | |
733 | ||
734 | /* | |
735 | * generic code guarantees at least one band, | |
736 | * set this very early because much code assumes | |
737 | * that hw.conf.channel is assigned | |
738 | */ | |
739 | channels = 0; | |
740 | max_bitrates = 0; | |
741 | supp_ht = false; | |
742 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
743 | struct ieee80211_supported_band *sband; | |
744 | ||
745 | sband = local->hw.wiphy->bands[band]; | |
746 | if (!sband) | |
747 | continue; | |
748 | if (!local->oper_channel) { | |
749 | /* init channel we're on */ | |
750 | local->hw.conf.channel = | |
751 | local->oper_channel = &sband->channels[0]; | |
752 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
753 | } | |
754 | channels += sband->n_channels; | |
755 | ||
756 | if (max_bitrates < sband->n_bitrates) | |
757 | max_bitrates = sband->n_bitrates; | |
758 | supp_ht = supp_ht || sband->ht_cap.ht_supported; | |
759 | } | |
760 | ||
761 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + | |
762 | sizeof(void *) * channels, GFP_KERNEL); | |
763 | if (!local->int_scan_req) | |
764 | return -ENOMEM; | |
765 | ||
766 | /* if low-level driver supports AP, we also support VLAN */ | |
767 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { | |
768 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
769 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
770 | } | |
771 | ||
772 | /* mac80211 always supports monitor */ | |
773 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
774 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
775 | ||
776 | /* | |
777 | * mac80211 doesn't support more than 1 channel, and also not more | |
778 | * than one IBSS interface | |
779 | */ | |
780 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { | |
781 | const struct ieee80211_iface_combination *c; | |
782 | int j; | |
783 | ||
784 | c = &hw->wiphy->iface_combinations[i]; | |
785 | ||
786 | if (c->num_different_channels > 1) | |
787 | return -EINVAL; | |
788 | ||
789 | for (j = 0; j < c->n_limits; j++) | |
790 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
791 | c->limits[j].max > 1) | |
792 | return -EINVAL; | |
793 | } | |
794 | ||
795 | #ifndef CONFIG_MAC80211_MESH | |
796 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
797 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
798 | #endif | |
799 | ||
800 | /* if the underlying driver supports mesh, mac80211 will (at least) | |
801 | * provide routing of mesh authentication frames to userspace */ | |
802 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
803 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
804 | ||
805 | /* mac80211 supports control port protocol changing */ | |
806 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
807 | ||
808 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) | |
809 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
810 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
811 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
812 | ||
813 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) | |
814 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
815 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
816 | ||
817 | /* | |
818 | * Calculate scan IE length -- we need this to alloc | |
819 | * memory and to subtract from the driver limit. It | |
820 | * includes the DS Params, (extended) supported rates, and HT | |
821 | * information -- SSID is the driver's responsibility. | |
822 | */ | |
823 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + | |
824 | 3 /* DS Params */; | |
825 | if (supp_ht) | |
826 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
827 | ||
828 | if (!local->ops->hw_scan) { | |
829 | /* For hw_scan, driver needs to set these up. */ | |
830 | local->hw.wiphy->max_scan_ssids = 4; | |
831 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
832 | } | |
833 | ||
834 | /* | |
835 | * If the driver supports any scan IEs, then assume the | |
836 | * limit includes the IEs mac80211 will add, otherwise | |
837 | * leave it at zero and let the driver sort it out; we | |
838 | * still pass our IEs to the driver but userspace will | |
839 | * not be allowed to in that case. | |
840 | */ | |
841 | if (local->hw.wiphy->max_scan_ie_len) | |
842 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
843 | ||
844 | /* Set up cipher suites unless driver already did */ | |
845 | if (!local->hw.wiphy->cipher_suites) { | |
846 | local->hw.wiphy->cipher_suites = cipher_suites; | |
847 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
848 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
849 | local->hw.wiphy->n_cipher_suites--; | |
850 | } | |
851 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { | |
852 | if (local->hw.wiphy->cipher_suites == cipher_suites) { | |
853 | local->hw.wiphy->cipher_suites += 2; | |
854 | local->hw.wiphy->n_cipher_suites -= 2; | |
855 | } else { | |
856 | u32 *suites; | |
857 | int r, w = 0; | |
858 | ||
859 | /* Filter out WEP */ | |
860 | ||
861 | suites = kmemdup( | |
862 | local->hw.wiphy->cipher_suites, | |
863 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
864 | GFP_KERNEL); | |
865 | if (!suites) | |
866 | return -ENOMEM; | |
867 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
868 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
869 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
870 | suite == WLAN_CIPHER_SUITE_WEP104) | |
871 | continue; | |
872 | suites[w++] = suite; | |
873 | } | |
874 | local->hw.wiphy->cipher_suites = suites; | |
875 | local->hw.wiphy->n_cipher_suites = w; | |
876 | local->wiphy_ciphers_allocated = true; | |
877 | } | |
878 | } | |
879 | ||
880 | if (!local->ops->remain_on_channel) | |
881 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
882 | ||
883 | if (local->ops->sched_scan_start) | |
884 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
885 | ||
886 | /* mac80211 based drivers don't support internal TDLS setup */ | |
887 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
888 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
889 | ||
890 | result = wiphy_register(local->hw.wiphy); | |
891 | if (result < 0) | |
892 | goto fail_wiphy_register; | |
893 | ||
894 | /* | |
895 | * We use the number of queues for feature tests (QoS, HT) internally | |
896 | * so restrict them appropriately. | |
897 | */ | |
898 | if (hw->queues > IEEE80211_MAX_QUEUES) | |
899 | hw->queues = IEEE80211_MAX_QUEUES; | |
900 | ||
901 | local->workqueue = | |
902 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); | |
903 | if (!local->workqueue) { | |
904 | result = -ENOMEM; | |
905 | goto fail_workqueue; | |
906 | } | |
907 | ||
908 | /* | |
909 | * The hardware needs headroom for sending the frame, | |
910 | * and we need some headroom for passing the frame to monitor | |
911 | * interfaces, but never both at the same time. | |
912 | */ | |
913 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, | |
914 | IEEE80211_TX_STATUS_HEADROOM); | |
915 | ||
916 | debugfs_hw_add(local); | |
917 | ||
918 | /* | |
919 | * if the driver doesn't specify a max listen interval we | |
920 | * use 5 which should be a safe default | |
921 | */ | |
922 | if (local->hw.max_listen_interval == 0) | |
923 | local->hw.max_listen_interval = 5; | |
924 | ||
925 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
926 | ||
927 | local->dynamic_ps_forced_timeout = -1; | |
928 | ||
929 | result = ieee80211_wep_init(local); | |
930 | if (result < 0) | |
931 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", | |
932 | result); | |
933 | ||
934 | rtnl_lock(); | |
935 | ||
936 | result = ieee80211_init_rate_ctrl_alg(local, | |
937 | hw->rate_control_algorithm); | |
938 | if (result < 0) { | |
939 | wiphy_debug(local->hw.wiphy, | |
940 | "Failed to initialize rate control algorithm\n"); | |
941 | goto fail_rate; | |
942 | } | |
943 | ||
944 | /* add one default STA interface if supported */ | |
945 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
946 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
947 | NL80211_IFTYPE_STATION, NULL); | |
948 | if (result) | |
949 | wiphy_warn(local->hw.wiphy, | |
950 | "Failed to add default virtual iface\n"); | |
951 | } | |
952 | ||
953 | rtnl_unlock(); | |
954 | ||
955 | ieee80211_led_init(local); | |
956 | ||
957 | local->network_latency_notifier.notifier_call = | |
958 | ieee80211_max_network_latency; | |
959 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
960 | &local->network_latency_notifier); | |
961 | if (result) { | |
962 | rtnl_lock(); | |
963 | goto fail_pm_qos; | |
964 | } | |
965 | ||
966 | #ifdef CONFIG_INET | |
967 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; | |
968 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
969 | if (result) | |
970 | goto fail_ifa; | |
971 | #endif | |
972 | ||
973 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, | |
974 | local->hw.napi_weight); | |
975 | ||
976 | return 0; | |
977 | ||
978 | #ifdef CONFIG_INET | |
979 | fail_ifa: | |
980 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
981 | &local->network_latency_notifier); | |
982 | rtnl_lock(); | |
983 | #endif | |
984 | fail_pm_qos: | |
985 | ieee80211_led_exit(local); | |
986 | ieee80211_remove_interfaces(local); | |
987 | fail_rate: | |
988 | rtnl_unlock(); | |
989 | ieee80211_wep_free(local); | |
990 | sta_info_stop(local); | |
991 | destroy_workqueue(local->workqueue); | |
992 | fail_workqueue: | |
993 | wiphy_unregister(local->hw.wiphy); | |
994 | fail_wiphy_register: | |
995 | if (local->wiphy_ciphers_allocated) | |
996 | kfree(local->hw.wiphy->cipher_suites); | |
997 | kfree(local->int_scan_req); | |
998 | return result; | |
999 | } | |
1000 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1001 | ||
1002 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) | |
1003 | { | |
1004 | struct ieee80211_local *local = hw_to_local(hw); | |
1005 | ||
1006 | tasklet_kill(&local->tx_pending_tasklet); | |
1007 | tasklet_kill(&local->tasklet); | |
1008 | ||
1009 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
1010 | &local->network_latency_notifier); | |
1011 | #ifdef CONFIG_INET | |
1012 | unregister_inetaddr_notifier(&local->ifa_notifier); | |
1013 | #endif | |
1014 | ||
1015 | rtnl_lock(); | |
1016 | ||
1017 | /* | |
1018 | * At this point, interface list manipulations are fine | |
1019 | * because the driver cannot be handing us frames any | |
1020 | * more and the tasklet is killed. | |
1021 | */ | |
1022 | ieee80211_remove_interfaces(local); | |
1023 | ||
1024 | rtnl_unlock(); | |
1025 | ||
1026 | /* | |
1027 | * Now all work items will be gone, but the | |
1028 | * timer might still be armed, so delete it | |
1029 | */ | |
1030 | del_timer_sync(&local->work_timer); | |
1031 | ||
1032 | cancel_work_sync(&local->restart_work); | |
1033 | cancel_work_sync(&local->reconfig_filter); | |
1034 | ||
1035 | ieee80211_clear_tx_pending(local); | |
1036 | rate_control_deinitialize(local); | |
1037 | ||
1038 | if (skb_queue_len(&local->skb_queue) || | |
1039 | skb_queue_len(&local->skb_queue_unreliable)) | |
1040 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); | |
1041 | skb_queue_purge(&local->skb_queue); | |
1042 | skb_queue_purge(&local->skb_queue_unreliable); | |
1043 | skb_queue_purge(&local->rx_skb_queue); | |
1044 | ||
1045 | destroy_workqueue(local->workqueue); | |
1046 | wiphy_unregister(local->hw.wiphy); | |
1047 | sta_info_stop(local); | |
1048 | ieee80211_wep_free(local); | |
1049 | ieee80211_led_exit(local); | |
1050 | kfree(local->int_scan_req); | |
1051 | } | |
1052 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1053 | ||
1054 | static int ieee80211_free_ack_frame(int id, void *p, void *data) | |
1055 | { | |
1056 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1057 | kfree_skb(p); | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1062 | { | |
1063 | struct ieee80211_local *local = hw_to_local(hw); | |
1064 | ||
1065 | mutex_destroy(&local->iflist_mtx); | |
1066 | mutex_destroy(&local->mtx); | |
1067 | ||
1068 | if (local->wiphy_ciphers_allocated) | |
1069 | kfree(local->hw.wiphy->cipher_suites); | |
1070 | ||
1071 | idr_for_each(&local->ack_status_frames, | |
1072 | ieee80211_free_ack_frame, NULL); | |
1073 | idr_destroy(&local->ack_status_frames); | |
1074 | ||
1075 | wiphy_free(local->hw.wiphy); | |
1076 | } | |
1077 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1078 | ||
1079 | static int __init ieee80211_init(void) | |
1080 | { | |
1081 | struct sk_buff *skb; | |
1082 | int ret; | |
1083 | ||
1084 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); | |
1085 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
1086 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); | |
1087 | ||
1088 | ret = rc80211_minstrel_init(); | |
1089 | if (ret) | |
1090 | return ret; | |
1091 | ||
1092 | ret = rc80211_minstrel_ht_init(); | |
1093 | if (ret) | |
1094 | goto err_minstrel; | |
1095 | ||
1096 | ret = rc80211_pid_init(); | |
1097 | if (ret) | |
1098 | goto err_pid; | |
1099 | ||
1100 | ret = ieee80211_iface_init(); | |
1101 | if (ret) | |
1102 | goto err_netdev; | |
1103 | ||
1104 | return 0; | |
1105 | err_netdev: | |
1106 | rc80211_pid_exit(); | |
1107 | err_pid: | |
1108 | rc80211_minstrel_ht_exit(); | |
1109 | err_minstrel: | |
1110 | rc80211_minstrel_exit(); | |
1111 | ||
1112 | return ret; | |
1113 | } | |
1114 | ||
1115 | static void __exit ieee80211_exit(void) | |
1116 | { | |
1117 | rc80211_pid_exit(); | |
1118 | rc80211_minstrel_ht_exit(); | |
1119 | rc80211_minstrel_exit(); | |
1120 | ||
1121 | if (mesh_allocated) | |
1122 | ieee80211s_stop(); | |
1123 | ||
1124 | ieee80211_iface_exit(); | |
1125 | ||
1126 | rcu_barrier(); | |
1127 | } | |
1128 | ||
1129 | ||
1130 | subsys_initcall(ieee80211_init); | |
1131 | module_exit(ieee80211_exit); | |
1132 | ||
1133 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1134 | MODULE_LICENSE("GPL"); |