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Commit | Line | Data |
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f0706e82 JB |
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> | |
f0706e82 JB |
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> | |
f0706e82 | 20 | #include <linux/rtnetlink.h> |
f0706e82 | 21 | #include <linux/bitmap.h> |
10f644a4 | 22 | #include <linux/pm_qos_params.h> |
68542962 | 23 | #include <linux/inetdevice.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
f0706e82 | 27 | #include "ieee80211_i.h" |
24487981 | 28 | #include "driver-ops.h" |
2c8dccc7 | 29 | #include "rate.h" |
f7a92144 | 30 | #include "mesh.h" |
f0706e82 | 31 | #include "wep.h" |
2c8dccc7 | 32 | #include "led.h" |
e0eb6859 | 33 | #include "cfg.h" |
e9f207f0 | 34 | #include "debugfs.h" |
f0706e82 | 35 | |
f38fd12f JB |
36 | |
37 | bool ieee80211_disable_40mhz_24ghz; | |
38 | module_param(ieee80211_disable_40mhz_24ghz, bool, 0644); | |
39 | MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz, | |
40 | "Disable 40MHz support in the 2.4GHz band"); | |
41 | ||
0d143fe1 | 42 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 43 | { |
3ac64bee | 44 | u64 mc; |
4150c572 JB |
45 | unsigned int changed_flags; |
46 | unsigned int new_flags = 0; | |
47 | ||
53918994 | 48 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
49 | new_flags |= FIF_PROMISC_IN_BSS; |
50 | ||
53918994 | 51 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
52 | new_flags |= FIF_ALLMULTI; |
53 | ||
3ac64bee | 54 | if (local->monitors || local->scanning) |
8cc9a739 MW |
55 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
56 | ||
57 | if (local->fif_fcsfail) | |
58 | new_flags |= FIF_FCSFAIL; | |
59 | ||
60 | if (local->fif_plcpfail) | |
61 | new_flags |= FIF_PLCPFAIL; | |
62 | ||
63 | if (local->fif_control) | |
64 | new_flags |= FIF_CONTROL; | |
65 | ||
66 | if (local->fif_other_bss) | |
67 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 68 | |
e3b90ca2 IP |
69 | if (local->fif_pspoll) |
70 | new_flags |= FIF_PSPOLL; | |
71 | ||
3ac64bee | 72 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
73 | changed_flags = local->filter_flags ^ new_flags; |
74 | ||
22bedad3 | 75 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
76 | spin_unlock_bh(&local->filter_lock); |
77 | ||
4150c572 JB |
78 | /* be a bit nasty */ |
79 | new_flags |= (1<<31); | |
80 | ||
3ac64bee | 81 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
82 | |
83 | WARN_ON(new_flags & (1<<31)); | |
84 | ||
85 | local->filter_flags = new_flags & ~(1<<31); | |
86 | } | |
87 | ||
3ac64bee JB |
88 | static void ieee80211_reconfig_filter(struct work_struct *work) |
89 | { | |
90 | struct ieee80211_local *local = | |
91 | container_of(work, struct ieee80211_local, reconfig_filter); | |
92 | ||
93 | ieee80211_configure_filter(local); | |
94 | } | |
95 | ||
e8975581 | 96 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 97 | { |
58905ca5 | 98 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 99 | int ret = 0; |
e8975581 | 100 | int power; |
094d05dc | 101 | enum nl80211_channel_type channel_type; |
ffd2778b | 102 | u32 offchannel_flag; |
f0706e82 | 103 | |
cb121bad JB |
104 | might_sleep(); |
105 | ||
58905ca5 JB |
106 | scan_chan = local->scan_channel; |
107 | ||
ffd2778b | 108 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
58905ca5 JB |
109 | if (scan_chan) { |
110 | chan = scan_chan; | |
094d05dc | 111 | channel_type = NL80211_CHAN_NO_HT; |
45521245 | 112 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
8d4780eb LR |
113 | } else if (local->tmp_channel && |
114 | local->oper_channel != local->tmp_channel) { | |
b8bc4b0a JB |
115 | chan = scan_chan = local->tmp_channel; |
116 | channel_type = local->tmp_channel_type; | |
45521245 | 117 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
72bdcf34 | 118 | } else { |
b2c258fb | 119 | chan = local->oper_channel; |
0aaffa9b | 120 | channel_type = local->_oper_channel_type; |
45521245 | 121 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; |
72bdcf34 | 122 | } |
ffd2778b | 123 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 124 | |
ffd2778b | 125 | if (offchannel_flag || chan != local->hw.conf.channel || |
4797938c | 126 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 127 | local->hw.conf.channel = chan; |
4797938c | 128 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
129 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
130 | } | |
8318d78a | 131 | |
0f78231b JB |
132 | if (!conf_is_ht(&local->hw.conf)) { |
133 | /* | |
134 | * mac80211.h documents that this is only valid | |
135 | * when the channel is set to an HT type, and | |
136 | * that otherwise STATIC is used. | |
137 | */ | |
138 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
139 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
140 | local->hw.conf.smps_mode = local->smps_mode; | |
141 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
142 | } | |
143 | ||
58905ca5 | 144 | if (scan_chan) |
e8975581 | 145 | power = chan->max_power; |
8318d78a | 146 | else |
a8302de9 VT |
147 | power = local->power_constr_level ? |
148 | (chan->max_power - local->power_constr_level) : | |
149 | chan->max_power; | |
150 | ||
47afbaf5 | 151 | if (local->user_power_level >= 0) |
a8302de9 VT |
152 | power = min(power, local->user_power_level); |
153 | ||
e8975581 JB |
154 | if (local->hw.conf.power_level != power) { |
155 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
156 | local->hw.conf.power_level = power; | |
157 | } | |
b2c258fb | 158 | |
e8975581 | 159 | if (changed && local->open_count) { |
24487981 | 160 | ret = drv_config(local, changed); |
d73782fd | 161 | /* |
447107fb | 162 | * Goal: |
d73782fd JB |
163 | * HW reconfiguration should never fail, the driver has told |
164 | * us what it can support so it should live up to that promise. | |
447107fb RC |
165 | * |
166 | * Current status: | |
167 | * rfkill is not integrated with mac80211 and a | |
168 | * configuration command can thus fail if hardware rfkill | |
169 | * is enabled | |
170 | * | |
171 | * FIXME: integrate rfkill with mac80211 and then add this | |
172 | * WARN_ON() back | |
173 | * | |
d73782fd | 174 | */ |
447107fb | 175 | /* WARN_ON(ret); */ |
d73782fd | 176 | } |
f0706e82 | 177 | |
b2c258fb JB |
178 | return ret; |
179 | } | |
f0706e82 | 180 | |
471b3efd JB |
181 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
182 | u32 changed) | |
d9430a32 | 183 | { |
471b3efd | 184 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 185 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
186 | |
187 | if (!changed) | |
188 | return; | |
189 | ||
9cef8737 JB |
190 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
191 | /* | |
192 | * While not associated, claim a BSSID of all-zeroes | |
193 | * so that drivers don't do any weird things with the | |
194 | * BSSID at that time. | |
195 | */ | |
196 | if (sdata->vif.bss_conf.assoc) | |
197 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
198 | else | |
199 | sdata->vif.bss_conf.bssid = zero; | |
200 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
201 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
202 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 203 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 204 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
205 | sdata->vif.bss_conf.bssid = zero; |
206 | } else { | |
207 | WARN_ON(1); | |
208 | return; | |
209 | } | |
210 | ||
211 | switch (sdata->vif.type) { | |
212 | case NL80211_IFTYPE_AP: | |
213 | case NL80211_IFTYPE_ADHOC: | |
214 | case NL80211_IFTYPE_MESH_POINT: | |
215 | break; | |
216 | default: | |
217 | /* do not warn to simplify caller in scan.c */ | |
218 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
219 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
220 | return; | |
221 | break; | |
222 | } | |
223 | ||
224 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 225 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
97af7432 | 226 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
2d0ddec5 JB |
227 | sdata->vif.bss_conf.enable_beacon = false; |
228 | } else { | |
229 | /* | |
230 | * Beacon should be enabled, but AP mode must | |
231 | * check whether there is a beacon configured. | |
232 | */ | |
233 | switch (sdata->vif.type) { | |
234 | case NL80211_IFTYPE_AP: | |
235 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 236 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
237 | break; |
238 | case NL80211_IFTYPE_ADHOC: | |
239 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 240 | !!sdata->u.ibss.presp; |
2d0ddec5 JB |
241 | break; |
242 | case NL80211_IFTYPE_MESH_POINT: | |
243 | sdata->vif.bss_conf.enable_beacon = true; | |
244 | break; | |
245 | default: | |
246 | /* not reached */ | |
247 | WARN_ON(1); | |
248 | break; | |
249 | } | |
250 | } | |
251 | } | |
252 | ||
12375ef9 | 253 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
254 | } |
255 | ||
f698d856 | 256 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 257 | { |
bda3933a JB |
258 | sdata->vif.bss_conf.use_cts_prot = false; |
259 | sdata->vif.bss_conf.use_short_preamble = false; | |
260 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
261 | return BSS_CHANGED_ERP_CTS_PROT | |
262 | BSS_CHANGED_ERP_PREAMBLE | | |
263 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
264 | } |
265 | ||
f0706e82 JB |
266 | static void ieee80211_tasklet_handler(unsigned long data) |
267 | { | |
268 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
269 | struct sk_buff *skb; | |
f0706e82 JB |
270 | |
271 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
272 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
273 | switch (skb->pkt_type) { | |
274 | case IEEE80211_RX_MSG: | |
51fb61e7 | 275 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
276 | * netstack. */ |
277 | skb->pkt_type = 0; | |
f1d58c25 | 278 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
279 | break; |
280 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 281 | skb->pkt_type = 0; |
e039fa4a | 282 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 283 | break; |
f4ea83dd | 284 | default: |
5e3f3089 LF |
285 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
286 | skb->pkt_type); | |
f0706e82 JB |
287 | dev_kfree_skb(skb); |
288 | break; | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
f2753ddb JB |
293 | static void ieee80211_restart_work(struct work_struct *work) |
294 | { | |
295 | struct ieee80211_local *local = | |
296 | container_of(work, struct ieee80211_local, restart_work); | |
297 | ||
298 | rtnl_lock(); | |
299 | ieee80211_reconfig(local); | |
300 | rtnl_unlock(); | |
301 | } | |
302 | ||
303 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
304 | { | |
305 | struct ieee80211_local *local = hw_to_local(hw); | |
306 | ||
b5878a2d JB |
307 | trace_api_restart_hw(local); |
308 | ||
edeb78a7 SG |
309 | /* wait for scan work complete */ |
310 | flush_workqueue(local->workqueue); | |
311 | ||
18145c69 JL |
312 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
313 | "%s called with hardware scan in progress\n", __func__); | |
314 | ||
315 | if (unlikely(test_bit(SCAN_SW_SCANNING, &local->scanning))) | |
316 | ieee80211_scan_cancel(local); | |
317 | ||
318 | /* use this reason, ieee80211_reconfig will unblock it */ | |
f2753ddb JB |
319 | ieee80211_stop_queues_by_reason(hw, |
320 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
321 | ||
322 | schedule_work(&local->restart_work); | |
323 | } | |
324 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
325 | ||
0f78231b JB |
326 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
327 | { | |
328 | struct ieee80211_local *local = | |
329 | container_of(work, struct ieee80211_local, recalc_smps); | |
330 | ||
331 | mutex_lock(&local->iflist_mtx); | |
332 | ieee80211_recalc_smps(local, NULL); | |
333 | mutex_unlock(&local->iflist_mtx); | |
334 | } | |
335 | ||
26b36cfe | 336 | #ifdef CONFIG_INET |
2b2c009e JO |
337 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
338 | unsigned long data, void *arg) | |
339 | { | |
340 | struct in_ifaddr *ifa = arg; | |
341 | struct ieee80211_local *local = | |
342 | container_of(nb, struct ieee80211_local, | |
343 | ifa_notifier); | |
344 | struct net_device *ndev = ifa->ifa_dev->dev; | |
345 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 346 | struct in_device *idev; |
2b2c009e | 347 | struct ieee80211_sub_if_data *sdata; |
68542962 | 348 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 349 | struct ieee80211_if_managed *ifmgd; |
68542962 | 350 | int c = 0; |
2b2c009e JO |
351 | |
352 | /* Make sure it's our interface that got changed */ | |
353 | if (!wdev) | |
354 | return NOTIFY_DONE; | |
355 | ||
356 | if (wdev->wiphy != local->hw.wiphy) | |
357 | return NOTIFY_DONE; | |
358 | ||
2b2c009e | 359 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 360 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e | 361 | |
26a58456 JB |
362 | if (!ieee80211_sdata_running(sdata)) |
363 | return NOTIFY_DONE; | |
364 | ||
2b2c009e JO |
365 | /* ARP filtering is only supported in managed mode */ |
366 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
367 | return NOTIFY_DONE; | |
368 | ||
68542962 JO |
369 | idev = sdata->dev->ip_ptr; |
370 | if (!idev) | |
371 | return NOTIFY_DONE; | |
372 | ||
2b2c009e JO |
373 | ifmgd = &sdata->u.mgd; |
374 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
375 | |
376 | /* Copy the addresses to the bss_conf list */ | |
377 | ifa = idev->ifa_list; | |
378 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
379 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
380 | ifa = ifa->ifa_next; | |
381 | c++; | |
382 | } | |
383 | ||
384 | /* If not all addresses fit the list, disable filtering */ | |
385 | if (ifa) { | |
386 | sdata->arp_filter_state = false; | |
387 | c = 0; | |
388 | } else { | |
389 | sdata->arp_filter_state = true; | |
390 | } | |
391 | bss_conf->arp_addr_cnt = c; | |
392 | ||
393 | /* Configure driver only if associated */ | |
394 | if (ifmgd->associated) { | |
395 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
396 | ieee80211_bss_info_change_notify(sdata, | |
397 | BSS_CHANGED_ARP_FILTER); | |
398 | } | |
399 | ||
2b2c009e JO |
400 | mutex_unlock(&ifmgd->mtx); |
401 | ||
402 | return NOTIFY_DONE; | |
403 | } | |
26b36cfe | 404 | #endif |
2b2c009e | 405 | |
4e6cbfd0 JL |
406 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
407 | { | |
408 | struct ieee80211_local *local = | |
409 | container_of(napi, struct ieee80211_local, napi); | |
410 | ||
411 | return local->ops->napi_poll(&local->hw, budget); | |
412 | } | |
413 | ||
414 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
415 | { | |
416 | struct ieee80211_local *local = hw_to_local(hw); | |
417 | ||
418 | napi_schedule(&local->napi); | |
419 | } | |
420 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
421 | ||
422 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
423 | { | |
424 | struct ieee80211_local *local = hw_to_local(hw); | |
425 | ||
426 | napi_complete(&local->napi); | |
427 | } | |
428 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
429 | ||
2e161f78 JB |
430 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
431 | static const struct ieee80211_txrx_stypes | |
432 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
433 | [NL80211_IFTYPE_ADHOC] = { | |
434 | .tx = 0xffff, | |
435 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
436 | }, | |
437 | [NL80211_IFTYPE_STATION] = { | |
438 | .tx = 0xffff, | |
439 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
440 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
441 | }, | |
442 | [NL80211_IFTYPE_AP] = { | |
443 | .tx = 0xffff, | |
444 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
445 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
446 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
447 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
448 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
449 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
450 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
451 | }, | |
452 | [NL80211_IFTYPE_AP_VLAN] = { | |
453 | /* copy AP */ | |
454 | .tx = 0xffff, | |
455 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
456 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
457 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2ca27bcf JB |
458 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
459 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
460 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
461 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
462 | }, | |
463 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
464 | .tx = 0xffff, | |
465 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
466 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
467 | }, | |
468 | [NL80211_IFTYPE_P2P_GO] = { | |
469 | .tx = 0xffff, | |
470 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
471 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
472 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
473 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
474 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
475 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
476 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
477 | }, | |
478 | }; | |
479 | ||
f0706e82 JB |
480 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
481 | const struct ieee80211_ops *ops) | |
482 | { | |
f0706e82 | 483 | struct ieee80211_local *local; |
96f5e66e | 484 | int priv_size, i; |
f0706e82 JB |
485 | struct wiphy *wiphy; |
486 | ||
487 | /* Ensure 32-byte alignment of our private data and hw private data. | |
488 | * We use the wiphy priv data for both our ieee80211_local and for | |
489 | * the driver's private data | |
490 | * | |
491 | * In memory it'll be like this: | |
492 | * | |
493 | * +-------------------------+ | |
494 | * | struct wiphy | | |
495 | * +-------------------------+ | |
496 | * | struct ieee80211_local | | |
497 | * +-------------------------+ | |
498 | * | driver's private data | | |
499 | * +-------------------------+ | |
500 | * | |
501 | */ | |
1ce8e7b5 | 502 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
503 | |
504 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
505 | ||
506 | if (!wiphy) | |
507 | return NULL; | |
508 | ||
2e161f78 JB |
509 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
510 | ||
9bc383de JB |
511 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
512 | WIPHY_FLAG_4ADDR_AP | | |
513 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 514 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 515 | |
0c1ad2ca | 516 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
517 | |
518 | local = wiphy_priv(wiphy); | |
de95a54b | 519 | |
f0706e82 JB |
520 | local->hw.wiphy = wiphy; |
521 | ||
1ce8e7b5 | 522 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 523 | |
4480f15c | 524 | BUG_ON(!ops->tx); |
4150c572 JB |
525 | BUG_ON(!ops->start); |
526 | BUG_ON(!ops->stop); | |
4480f15c JB |
527 | BUG_ON(!ops->config); |
528 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
529 | BUG_ON(!ops->remove_interface); |
530 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
531 | local->ops = ops; |
532 | ||
e6a9854b JB |
533 | /* set up some defaults */ |
534 | local->hw.queues = 1; | |
535 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
536 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
537 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 538 | local->user_power_level = -1; |
50ae0cf1 KV |
539 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
540 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 541 | |
79010420 | 542 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
543 | |
544 | __hw_addr_init(&local->mc_list); | |
545 | ||
c771c9d8 | 546 | mutex_init(&local->iflist_mtx); |
a1699b75 | 547 | mutex_init(&local->mtx); |
f0706e82 | 548 | |
ad0e2b5a | 549 | mutex_init(&local->key_mtx); |
3b8d81e0 | 550 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
551 | spin_lock_init(&local->queue_stop_reason_lock); |
552 | ||
c2b13452 | 553 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 554 | |
af6b6374 JB |
555 | ieee80211_work_init(local); |
556 | ||
f2753ddb JB |
557 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
558 | ||
3ac64bee | 559 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
560 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
561 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 562 | |
520eb820 KV |
563 | INIT_WORK(&local->dynamic_ps_enable_work, |
564 | ieee80211_dynamic_ps_enable_work); | |
565 | INIT_WORK(&local->dynamic_ps_disable_work, | |
566 | ieee80211_dynamic_ps_disable_work); | |
567 | setup_timer(&local->dynamic_ps_timer, | |
568 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
569 | ||
f0706e82 JB |
570 | sta_info_init(local); |
571 | ||
a6a67db2 | 572 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 573 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
574 | atomic_set(&local->agg_queue_stop[i], 0); |
575 | } | |
f0706e82 JB |
576 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
577 | (unsigned long)local); | |
f0706e82 JB |
578 | |
579 | tasklet_init(&local->tasklet, | |
580 | ieee80211_tasklet_handler, | |
581 | (unsigned long) local); | |
f0706e82 JB |
582 | |
583 | skb_queue_head_init(&local->skb_queue); | |
584 | skb_queue_head_init(&local->skb_queue_unreliable); | |
585 | ||
4e6cbfd0 JL |
586 | /* init dummy netdev for use w/ NAPI */ |
587 | init_dummy_netdev(&local->napi_dev); | |
588 | ||
f0706e82 JB |
589 | return local_to_hw(local); |
590 | } | |
591 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
592 | ||
593 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
594 | { | |
595 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 596 | int result; |
8318d78a | 597 | enum ieee80211_band band; |
be4a4b6a | 598 | int channels, max_bitrates; |
5ef2d41a | 599 | bool supp_ht; |
25e47c18 | 600 | static const u32 cipher_suites[] = { |
5daa8a8e | 601 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
602 | WLAN_CIPHER_SUITE_WEP40, |
603 | WLAN_CIPHER_SUITE_WEP104, | |
604 | WLAN_CIPHER_SUITE_TKIP, | |
605 | WLAN_CIPHER_SUITE_CCMP, | |
606 | ||
607 | /* keep last -- depends on hw flags! */ | |
608 | WLAN_CIPHER_SUITE_AES_CMAC | |
609 | }; | |
8318d78a JB |
610 | |
611 | /* | |
612 | * generic code guarantees at least one band, | |
613 | * set this very early because much code assumes | |
614 | * that hw.conf.channel is assigned | |
615 | */ | |
2a519311 | 616 | channels = 0; |
de95a54b | 617 | max_bitrates = 0; |
5ef2d41a | 618 | supp_ht = false; |
8318d78a JB |
619 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
620 | struct ieee80211_supported_band *sband; | |
621 | ||
622 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
623 | if (!sband) |
624 | continue; | |
625 | if (!local->oper_channel) { | |
8318d78a JB |
626 | /* init channel we're on */ |
627 | local->hw.conf.channel = | |
58905ca5 JB |
628 | local->oper_channel = &sband->channels[0]; |
629 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 630 | } |
de95a54b JB |
631 | channels += sband->n_channels; |
632 | ||
633 | if (max_bitrates < sband->n_bitrates) | |
634 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 635 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 636 | } |
f0706e82 | 637 | |
5ba63533 JB |
638 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
639 | sizeof(void *) * channels, GFP_KERNEL); | |
640 | if (!local->int_scan_req) | |
2a519311 JB |
641 | return -ENOMEM; |
642 | ||
f59ac048 LR |
643 | /* if low-level driver supports AP, we also support VLAN */ |
644 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
645 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
646 | ||
647 | /* mac80211 always supports monitor */ | |
648 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
649 | ||
5eb5a52d JB |
650 | #ifndef CONFIG_MAC80211_MESH |
651 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
652 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
653 | #endif | |
654 | ||
a621fa4d JB |
655 | /* mac80211 supports control port protocol changing */ |
656 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
657 | ||
77965c97 JB |
658 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
659 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
660 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
661 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
662 | ||
ab13315a KV |
663 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
664 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
665 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
666 | ||
de95a54b JB |
667 | /* |
668 | * Calculate scan IE length -- we need this to alloc | |
669 | * memory and to subtract from the driver limit. It | |
670 | * includes the (extended) supported rates and HT | |
671 | * information -- SSID is the driver's responsibility. | |
672 | */ | |
673 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
674 | if (supp_ht) |
675 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
676 | |
677 | if (!local->ops->hw_scan) { | |
678 | /* For hw_scan, driver needs to set these up. */ | |
679 | local->hw.wiphy->max_scan_ssids = 4; | |
680 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
681 | } | |
682 | ||
683 | /* | |
684 | * If the driver supports any scan IEs, then assume the | |
685 | * limit includes the IEs mac80211 will add, otherwise | |
686 | * leave it at zero and let the driver sort it out; we | |
687 | * still pass our IEs to the driver but userspace will | |
688 | * not be allowed to in that case. | |
689 | */ | |
690 | if (local->hw.wiphy->max_scan_ie_len) | |
691 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
692 | ||
3ffc2a90 JB |
693 | /* Set up cipher suites unless driver already did */ |
694 | if (!local->hw.wiphy->cipher_suites) { | |
695 | local->hw.wiphy->cipher_suites = cipher_suites; | |
696 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
697 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
698 | local->hw.wiphy->n_cipher_suites--; | |
699 | } | |
5daa8a8e | 700 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
701 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
702 | local->hw.wiphy->cipher_suites += 2; | |
703 | local->hw.wiphy->n_cipher_suites -= 2; | |
704 | } else { | |
705 | u32 *suites; | |
706 | int r, w = 0; | |
707 | ||
708 | /* Filter out WEP */ | |
709 | ||
710 | suites = kmemdup( | |
711 | local->hw.wiphy->cipher_suites, | |
712 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
713 | GFP_KERNEL); | |
714 | if (!suites) | |
715 | return -ENOMEM; | |
716 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
717 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
718 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
719 | suite == WLAN_CIPHER_SUITE_WEP104) | |
720 | continue; | |
721 | suites[w++] = suite; | |
722 | } | |
723 | local->hw.wiphy->cipher_suites = suites; | |
724 | local->hw.wiphy->n_cipher_suites = w; | |
725 | local->wiphy_ciphers_allocated = true; | |
726 | } | |
5daa8a8e | 727 | } |
25e47c18 | 728 | |
f0706e82 JB |
729 | result = wiphy_register(local->hw.wiphy); |
730 | if (result < 0) | |
2a519311 | 731 | goto fail_wiphy_register; |
f0706e82 | 732 | |
e2530083 JB |
733 | /* |
734 | * We use the number of queues for feature tests (QoS, HT) internally | |
735 | * so restrict them appropriately. | |
736 | */ | |
e2530083 JB |
737 | if (hw->queues > IEEE80211_MAX_QUEUES) |
738 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 739 | |
42935eca | 740 | local->workqueue = |
30d3ef41 | 741 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 742 | if (!local->workqueue) { |
f0706e82 JB |
743 | result = -ENOMEM; |
744 | goto fail_workqueue; | |
745 | } | |
746 | ||
b306f453 JB |
747 | /* |
748 | * The hardware needs headroom for sending the frame, | |
749 | * and we need some headroom for passing the frame to monitor | |
750 | * interfaces, but never both at the same time. | |
751 | */ | |
d24deb25 GW |
752 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
753 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
754 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
755 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 756 | |
e9f207f0 JB |
757 | debugfs_hw_add(local); |
758 | ||
b446918b HS |
759 | /* |
760 | * if the driver doesn't specify a max listen interval we | |
761 | * use 5 which should be a safe default | |
762 | */ | |
ea95bba4 | 763 | if (local->hw.max_listen_interval == 0) |
b446918b | 764 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
765 | |
766 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
767 | ||
ff616381 | 768 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 769 | |
f0706e82 JB |
770 | result = sta_info_start(local); |
771 | if (result < 0) | |
772 | goto fail_sta_info; | |
773 | ||
d4c4a9a1 | 774 | result = ieee80211_wep_init(local); |
3473187d | 775 | if (result < 0) |
0fb9a9ec JP |
776 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
777 | result); | |
d4c4a9a1 | 778 | |
f0706e82 | 779 | rtnl_lock(); |
f0706e82 | 780 | |
830f9038 JB |
781 | result = ieee80211_init_rate_ctrl_alg(local, |
782 | hw->rate_control_algorithm); | |
f0706e82 | 783 | if (result < 0) { |
0fb9a9ec JP |
784 | wiphy_debug(local->hw.wiphy, |
785 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
786 | goto fail_rate; |
787 | } | |
788 | ||
8dffff21 JB |
789 | /* add one default STA interface if supported */ |
790 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
791 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
792 | NL80211_IFTYPE_STATION, NULL); | |
793 | if (result) | |
0fb9a9ec JP |
794 | wiphy_warn(local->hw.wiphy, |
795 | "Failed to add default virtual iface\n"); | |
8dffff21 | 796 | } |
f0706e82 | 797 | |
f0706e82 JB |
798 | rtnl_unlock(); |
799 | ||
800 | ieee80211_led_init(local); | |
801 | ||
10f644a4 JB |
802 | local->network_latency_notifier.notifier_call = |
803 | ieee80211_max_network_latency; | |
804 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
805 | &local->network_latency_notifier); | |
10f644a4 JB |
806 | if (result) { |
807 | rtnl_lock(); | |
808 | goto fail_pm_qos; | |
809 | } | |
810 | ||
26b36cfe | 811 | #ifdef CONFIG_INET |
2b2c009e JO |
812 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
813 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
814 | if (result) | |
815 | goto fail_ifa; | |
26b36cfe | 816 | #endif |
2b2c009e | 817 | |
4e6cbfd0 JL |
818 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
819 | local->hw.napi_weight); | |
820 | ||
f0706e82 JB |
821 | return 0; |
822 | ||
93c08c32 | 823 | #ifdef CONFIG_INET |
2b2c009e JO |
824 | fail_ifa: |
825 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
826 | &local->network_latency_notifier); | |
827 | rtnl_lock(); | |
93c08c32 | 828 | #endif |
10f644a4 JB |
829 | fail_pm_qos: |
830 | ieee80211_led_exit(local); | |
831 | ieee80211_remove_interfaces(local); | |
10f644a4 | 832 | fail_rate: |
f0706e82 | 833 | rtnl_unlock(); |
d4c4a9a1 | 834 | ieee80211_wep_free(local); |
f0706e82 | 835 | sta_info_stop(local); |
10f644a4 | 836 | fail_sta_info: |
42935eca | 837 | destroy_workqueue(local->workqueue); |
10f644a4 | 838 | fail_workqueue: |
f0706e82 | 839 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 840 | fail_wiphy_register: |
3ffc2a90 JB |
841 | if (local->wiphy_ciphers_allocated) |
842 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 843 | kfree(local->int_scan_req); |
f0706e82 JB |
844 | return result; |
845 | } | |
846 | EXPORT_SYMBOL(ieee80211_register_hw); | |
847 | ||
f0706e82 JB |
848 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
849 | { | |
850 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
851 | |
852 | tasklet_kill(&local->tx_pending_tasklet); | |
853 | tasklet_kill(&local->tasklet); | |
854 | ||
10f644a4 JB |
855 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
856 | &local->network_latency_notifier); | |
26b36cfe | 857 | #ifdef CONFIG_INET |
2b2c009e | 858 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 859 | #endif |
10f644a4 | 860 | |
f0706e82 JB |
861 | rtnl_lock(); |
862 | ||
79010420 JB |
863 | /* |
864 | * At this point, interface list manipulations are fine | |
865 | * because the driver cannot be handing us frames any | |
866 | * more and the tasklet is killed. | |
867 | */ | |
75636525 | 868 | ieee80211_remove_interfaces(local); |
5b2812e9 | 869 | |
f0706e82 JB |
870 | rtnl_unlock(); |
871 | ||
071249b1 JB |
872 | /* |
873 | * Now all work items will be gone, but the | |
874 | * timer might still be armed, so delete it | |
875 | */ | |
876 | del_timer_sync(&local->work_timer); | |
877 | ||
258086a4 | 878 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
879 | cancel_work_sync(&local->reconfig_filter); |
880 | ||
f0706e82 JB |
881 | ieee80211_clear_tx_pending(local); |
882 | sta_info_stop(local); | |
883 | rate_control_deinitialize(local); | |
884 | ||
f64f9e71 JP |
885 | if (skb_queue_len(&local->skb_queue) || |
886 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 887 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
888 | skb_queue_purge(&local->skb_queue); |
889 | skb_queue_purge(&local->skb_queue_unreliable); | |
890 | ||
42935eca | 891 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
892 | wiphy_unregister(local->hw.wiphy); |
893 | ieee80211_wep_free(local); | |
894 | ieee80211_led_exit(local); | |
5ba63533 | 895 | kfree(local->int_scan_req); |
f0706e82 JB |
896 | } |
897 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
898 | ||
899 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
900 | { | |
901 | struct ieee80211_local *local = hw_to_local(hw); | |
902 | ||
c771c9d8 | 903 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 904 | mutex_destroy(&local->mtx); |
c771c9d8 | 905 | |
3ffc2a90 JB |
906 | if (local->wiphy_ciphers_allocated) |
907 | kfree(local->hw.wiphy->cipher_suites); | |
908 | ||
f0706e82 JB |
909 | wiphy_free(local->hw.wiphy); |
910 | } | |
911 | EXPORT_SYMBOL(ieee80211_free_hw); | |
912 | ||
f0706e82 JB |
913 | static int __init ieee80211_init(void) |
914 | { | |
915 | struct sk_buff *skb; | |
916 | int ret; | |
917 | ||
e039fa4a JB |
918 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
919 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 920 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 921 | |
cccf129f FF |
922 | ret = rc80211_minstrel_init(); |
923 | if (ret) | |
924 | return ret; | |
925 | ||
ec8aa669 FF |
926 | ret = rc80211_minstrel_ht_init(); |
927 | if (ret) | |
928 | goto err_minstrel; | |
929 | ||
4b475898 | 930 | ret = rc80211_pid_init(); |
ad018375 | 931 | if (ret) |
47846c9b | 932 | goto err_pid; |
f0706e82 | 933 | |
47846c9b JB |
934 | ret = ieee80211_iface_init(); |
935 | if (ret) | |
936 | goto err_netdev; | |
e9f207f0 | 937 | |
f0706e82 | 938 | return 0; |
47846c9b JB |
939 | err_netdev: |
940 | rc80211_pid_exit(); | |
941 | err_pid: | |
ec8aa669 FF |
942 | rc80211_minstrel_ht_exit(); |
943 | err_minstrel: | |
47846c9b JB |
944 | rc80211_minstrel_exit(); |
945 | ||
946 | return ret; | |
f0706e82 JB |
947 | } |
948 | ||
f0706e82 JB |
949 | static void __exit ieee80211_exit(void) |
950 | { | |
4b475898 | 951 | rc80211_pid_exit(); |
ec8aa669 | 952 | rc80211_minstrel_ht_exit(); |
cccf129f | 953 | rc80211_minstrel_exit(); |
ac71c691 | 954 | |
3b96766f JB |
955 | /* |
956 | * For key todo, it'll be empty by now but the work | |
957 | * might still be scheduled. | |
958 | */ | |
959 | flush_scheduled_work(); | |
960 | ||
f7a92144 LCC |
961 | if (mesh_allocated) |
962 | ieee80211s_stop(); | |
902acc78 | 963 | |
47846c9b | 964 | ieee80211_iface_exit(); |
f0706e82 JB |
965 | } |
966 | ||
967 | ||
ca9938fe | 968 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
969 | module_exit(ieee80211_exit); |
970 | ||
971 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
972 | MODULE_LICENSE("GPL"); |