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 | 36 | |
8ba0537c | 37 | static bool ieee80211_disable_40mhz_24ghz; |
f38fd12f JB |
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 | ||
681c4d07 JB |
42 | static struct lock_class_key ieee80211_rx_skb_queue_class; |
43 | ||
0d143fe1 | 44 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 45 | { |
3ac64bee | 46 | u64 mc; |
4150c572 JB |
47 | unsigned int changed_flags; |
48 | unsigned int new_flags = 0; | |
49 | ||
53918994 | 50 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
51 | new_flags |= FIF_PROMISC_IN_BSS; |
52 | ||
53918994 | 53 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
54 | new_flags |= FIF_ALLMULTI; |
55 | ||
3ac64bee | 56 | if (local->monitors || local->scanning) |
8cc9a739 MW |
57 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
58 | ||
7be5086d JB |
59 | if (local->fif_probe_req || local->probe_req_reg) |
60 | new_flags |= FIF_PROBE_REQ; | |
61 | ||
8cc9a739 MW |
62 | if (local->fif_fcsfail) |
63 | new_flags |= FIF_FCSFAIL; | |
64 | ||
65 | if (local->fif_plcpfail) | |
66 | new_flags |= FIF_PLCPFAIL; | |
67 | ||
68 | if (local->fif_control) | |
69 | new_flags |= FIF_CONTROL; | |
70 | ||
71 | if (local->fif_other_bss) | |
72 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 73 | |
e3b90ca2 IP |
74 | if (local->fif_pspoll) |
75 | new_flags |= FIF_PSPOLL; | |
76 | ||
3ac64bee | 77 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
78 | changed_flags = local->filter_flags ^ new_flags; |
79 | ||
22bedad3 | 80 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
81 | spin_unlock_bh(&local->filter_lock); |
82 | ||
4150c572 JB |
83 | /* be a bit nasty */ |
84 | new_flags |= (1<<31); | |
85 | ||
3ac64bee | 86 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
87 | |
88 | WARN_ON(new_flags & (1<<31)); | |
89 | ||
90 | local->filter_flags = new_flags & ~(1<<31); | |
91 | } | |
92 | ||
3ac64bee JB |
93 | static void ieee80211_reconfig_filter(struct work_struct *work) |
94 | { | |
95 | struct ieee80211_local *local = | |
96 | container_of(work, struct ieee80211_local, reconfig_filter); | |
97 | ||
98 | ieee80211_configure_filter(local); | |
99 | } | |
100 | ||
b23b025f BG |
101 | /* |
102 | * Returns true if we are logically configured to be on | |
103 | * the operating channel AND the hardware-conf is currently | |
104 | * configured on the operating channel. Compares channel-type | |
105 | * as well. | |
106 | */ | |
107 | bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local) | |
108 | { | |
109 | struct ieee80211_channel *chan, *scan_chan; | |
110 | enum nl80211_channel_type channel_type; | |
111 | ||
112 | /* This logic needs to match logic in ieee80211_hw_config */ | |
113 | if (local->scan_channel) { | |
114 | chan = local->scan_channel; | |
4f2e9d91 BG |
115 | /* If scanning on oper channel, use whatever channel-type |
116 | * is currently in use. | |
117 | */ | |
118 | if (chan == local->oper_channel) | |
119 | channel_type = local->_oper_channel_type; | |
120 | else | |
121 | channel_type = NL80211_CHAN_NO_HT; | |
b23b025f BG |
122 | } else if (local->tmp_channel) { |
123 | chan = scan_chan = local->tmp_channel; | |
124 | channel_type = local->tmp_channel_type; | |
125 | } else { | |
126 | chan = local->oper_channel; | |
127 | channel_type = local->_oper_channel_type; | |
128 | } | |
129 | ||
130 | if (chan != local->oper_channel || | |
131 | channel_type != local->_oper_channel_type) | |
132 | return false; | |
133 | ||
134 | /* Check current hardware-config against oper_channel. */ | |
135 | if ((local->oper_channel != local->hw.conf.channel) || | |
136 | (local->_oper_channel_type != local->hw.conf.channel_type)) | |
137 | return false; | |
138 | ||
139 | return true; | |
140 | } | |
141 | ||
e8975581 | 142 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 143 | { |
58905ca5 | 144 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 145 | int ret = 0; |
e8975581 | 146 | int power; |
094d05dc | 147 | enum nl80211_channel_type channel_type; |
ffd2778b | 148 | u32 offchannel_flag; |
f0706e82 | 149 | |
cb121bad JB |
150 | might_sleep(); |
151 | ||
58905ca5 JB |
152 | scan_chan = local->scan_channel; |
153 | ||
b23b025f BG |
154 | /* If this off-channel logic ever changes, ieee80211_on_oper_channel |
155 | * may need to change as well. | |
156 | */ | |
ffd2778b | 157 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
58905ca5 JB |
158 | if (scan_chan) { |
159 | chan = scan_chan; | |
4f2e9d91 BG |
160 | /* If scanning on oper channel, use whatever channel-type |
161 | * is currently in use. | |
162 | */ | |
163 | if (chan == local->oper_channel) | |
164 | channel_type = local->_oper_channel_type; | |
165 | else | |
166 | channel_type = NL80211_CHAN_NO_HT; | |
b23b025f | 167 | } else if (local->tmp_channel) { |
b8bc4b0a JB |
168 | chan = scan_chan = local->tmp_channel; |
169 | channel_type = local->tmp_channel_type; | |
72bdcf34 | 170 | } else { |
b2c258fb | 171 | chan = local->oper_channel; |
0aaffa9b | 172 | channel_type = local->_oper_channel_type; |
72bdcf34 | 173 | } |
b23b025f BG |
174 | |
175 | if (chan != local->oper_channel || | |
176 | channel_type != local->_oper_channel_type) | |
177 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; | |
178 | else | |
179 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
180 | ||
ffd2778b | 181 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 182 | |
ffd2778b | 183 | if (offchannel_flag || chan != local->hw.conf.channel || |
4797938c | 184 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 185 | local->hw.conf.channel = chan; |
4797938c | 186 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
187 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
188 | } | |
8318d78a | 189 | |
0f78231b JB |
190 | if (!conf_is_ht(&local->hw.conf)) { |
191 | /* | |
192 | * mac80211.h documents that this is only valid | |
193 | * when the channel is set to an HT type, and | |
194 | * that otherwise STATIC is used. | |
195 | */ | |
196 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
197 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
198 | local->hw.conf.smps_mode = local->smps_mode; | |
199 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
200 | } | |
201 | ||
59bdf3b0 BG |
202 | if ((local->scanning & SCAN_SW_SCANNING) || |
203 | (local->scanning & SCAN_HW_SCANNING)) | |
e8975581 | 204 | power = chan->max_power; |
8318d78a | 205 | else |
a8302de9 VT |
206 | power = local->power_constr_level ? |
207 | (chan->max_power - local->power_constr_level) : | |
208 | chan->max_power; | |
209 | ||
47afbaf5 | 210 | if (local->user_power_level >= 0) |
a8302de9 VT |
211 | power = min(power, local->user_power_level); |
212 | ||
e8975581 JB |
213 | if (local->hw.conf.power_level != power) { |
214 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
215 | local->hw.conf.power_level = power; | |
216 | } | |
b2c258fb | 217 | |
e8975581 | 218 | if (changed && local->open_count) { |
24487981 | 219 | ret = drv_config(local, changed); |
d73782fd | 220 | /* |
447107fb | 221 | * Goal: |
d73782fd JB |
222 | * HW reconfiguration should never fail, the driver has told |
223 | * us what it can support so it should live up to that promise. | |
447107fb RC |
224 | * |
225 | * Current status: | |
226 | * rfkill is not integrated with mac80211 and a | |
227 | * configuration command can thus fail if hardware rfkill | |
228 | * is enabled | |
229 | * | |
230 | * FIXME: integrate rfkill with mac80211 and then add this | |
231 | * WARN_ON() back | |
232 | * | |
d73782fd | 233 | */ |
447107fb | 234 | /* WARN_ON(ret); */ |
d73782fd | 235 | } |
f0706e82 | 236 | |
b2c258fb JB |
237 | return ret; |
238 | } | |
f0706e82 | 239 | |
471b3efd JB |
240 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
241 | u32 changed) | |
d9430a32 | 242 | { |
471b3efd | 243 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 244 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
245 | |
246 | if (!changed) | |
247 | return; | |
248 | ||
9cef8737 JB |
249 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
250 | /* | |
251 | * While not associated, claim a BSSID of all-zeroes | |
252 | * so that drivers don't do any weird things with the | |
253 | * BSSID at that time. | |
254 | */ | |
255 | if (sdata->vif.bss_conf.assoc) | |
256 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
257 | else | |
258 | sdata->vif.bss_conf.bssid = zero; | |
259 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
260 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
261 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 262 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
1be7fe8d BJ |
263 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) |
264 | sdata->vif.bss_conf.bssid = NULL; | |
2d0ddec5 | 265 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
266 | sdata->vif.bss_conf.bssid = zero; |
267 | } else { | |
268 | WARN_ON(1); | |
269 | return; | |
270 | } | |
271 | ||
272 | switch (sdata->vif.type) { | |
273 | case NL80211_IFTYPE_AP: | |
274 | case NL80211_IFTYPE_ADHOC: | |
1be7fe8d | 275 | case NL80211_IFTYPE_WDS: |
2d0ddec5 JB |
276 | case NL80211_IFTYPE_MESH_POINT: |
277 | break; | |
278 | default: | |
279 | /* do not warn to simplify caller in scan.c */ | |
280 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
281 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
282 | return; | |
283 | break; | |
284 | } | |
285 | ||
286 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 287 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
b23b025f | 288 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { |
2d0ddec5 JB |
289 | sdata->vif.bss_conf.enable_beacon = false; |
290 | } else { | |
291 | /* | |
292 | * Beacon should be enabled, but AP mode must | |
293 | * check whether there is a beacon configured. | |
294 | */ | |
295 | switch (sdata->vif.type) { | |
296 | case NL80211_IFTYPE_AP: | |
297 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 298 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
299 | break; |
300 | case NL80211_IFTYPE_ADHOC: | |
301 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 302 | !!sdata->u.ibss.presp; |
2d0ddec5 | 303 | break; |
7659a193 | 304 | #ifdef CONFIG_MAC80211_MESH |
2d0ddec5 | 305 | case NL80211_IFTYPE_MESH_POINT: |
29cbe68c JB |
306 | sdata->vif.bss_conf.enable_beacon = |
307 | !!sdata->u.mesh.mesh_id_len; | |
2d0ddec5 | 308 | break; |
7659a193 | 309 | #endif |
2d0ddec5 JB |
310 | default: |
311 | /* not reached */ | |
312 | WARN_ON(1); | |
313 | break; | |
314 | } | |
315 | } | |
316 | } | |
317 | ||
12375ef9 | 318 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
319 | } |
320 | ||
f698d856 | 321 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 322 | { |
bda3933a JB |
323 | sdata->vif.bss_conf.use_cts_prot = false; |
324 | sdata->vif.bss_conf.use_short_preamble = false; | |
325 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
326 | return BSS_CHANGED_ERP_CTS_PROT | |
327 | BSS_CHANGED_ERP_PREAMBLE | | |
328 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
329 | } |
330 | ||
f0706e82 JB |
331 | static void ieee80211_tasklet_handler(unsigned long data) |
332 | { | |
333 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
334 | struct sk_buff *skb; | |
f0706e82 JB |
335 | |
336 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
337 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
338 | switch (skb->pkt_type) { | |
339 | case IEEE80211_RX_MSG: | |
51fb61e7 | 340 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
341 | * netstack. */ |
342 | skb->pkt_type = 0; | |
f1d58c25 | 343 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
344 | break; |
345 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 346 | skb->pkt_type = 0; |
e039fa4a | 347 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 348 | break; |
f4ea83dd | 349 | default: |
5e3f3089 LF |
350 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
351 | skb->pkt_type); | |
f0706e82 JB |
352 | dev_kfree_skb(skb); |
353 | break; | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
f2753ddb JB |
358 | static void ieee80211_restart_work(struct work_struct *work) |
359 | { | |
360 | struct ieee80211_local *local = | |
361 | container_of(work, struct ieee80211_local, restart_work); | |
362 | ||
bc86863d SG |
363 | /* wait for scan work complete */ |
364 | flush_workqueue(local->workqueue); | |
365 | ||
366 | mutex_lock(&local->mtx); | |
367 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), | |
368 | "%s called with hardware scan in progress\n", __func__); | |
369 | mutex_unlock(&local->mtx); | |
370 | ||
f2753ddb | 371 | rtnl_lock(); |
4136c422 | 372 | ieee80211_scan_cancel(local); |
f2753ddb JB |
373 | ieee80211_reconfig(local); |
374 | rtnl_unlock(); | |
375 | } | |
376 | ||
377 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
378 | { | |
379 | struct ieee80211_local *local = hw_to_local(hw); | |
380 | ||
b5878a2d JB |
381 | trace_api_restart_hw(local); |
382 | ||
b196d031 MB |
383 | wiphy_info(hw->wiphy, |
384 | "Hardware restart was requested\n"); | |
385 | ||
18145c69 | 386 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
387 | ieee80211_stop_queues_by_reason(hw, |
388 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
389 | ||
390 | schedule_work(&local->restart_work); | |
391 | } | |
392 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
393 | ||
0f78231b JB |
394 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
395 | { | |
396 | struct ieee80211_local *local = | |
397 | container_of(work, struct ieee80211_local, recalc_smps); | |
398 | ||
399 | mutex_lock(&local->iflist_mtx); | |
025e6be2 | 400 | ieee80211_recalc_smps(local); |
0f78231b JB |
401 | mutex_unlock(&local->iflist_mtx); |
402 | } | |
403 | ||
26b36cfe | 404 | #ifdef CONFIG_INET |
2b2c009e JO |
405 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
406 | unsigned long data, void *arg) | |
407 | { | |
408 | struct in_ifaddr *ifa = arg; | |
409 | struct ieee80211_local *local = | |
410 | container_of(nb, struct ieee80211_local, | |
411 | ifa_notifier); | |
412 | struct net_device *ndev = ifa->ifa_dev->dev; | |
413 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 414 | struct in_device *idev; |
2b2c009e | 415 | struct ieee80211_sub_if_data *sdata; |
68542962 | 416 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 417 | struct ieee80211_if_managed *ifmgd; |
68542962 | 418 | int c = 0; |
2b2c009e JO |
419 | |
420 | /* Make sure it's our interface that got changed */ | |
421 | if (!wdev) | |
422 | return NOTIFY_DONE; | |
423 | ||
424 | if (wdev->wiphy != local->hw.wiphy) | |
425 | return NOTIFY_DONE; | |
426 | ||
2b2c009e | 427 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 428 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e | 429 | |
26a58456 JB |
430 | if (!ieee80211_sdata_running(sdata)) |
431 | return NOTIFY_DONE; | |
432 | ||
2b2c009e JO |
433 | /* ARP filtering is only supported in managed mode */ |
434 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
435 | return NOTIFY_DONE; | |
436 | ||
95ae6b22 | 437 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
438 | if (!idev) |
439 | return NOTIFY_DONE; | |
440 | ||
2b2c009e JO |
441 | ifmgd = &sdata->u.mgd; |
442 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
443 | |
444 | /* Copy the addresses to the bss_conf list */ | |
445 | ifa = idev->ifa_list; | |
446 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
447 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
448 | ifa = ifa->ifa_next; | |
449 | c++; | |
450 | } | |
451 | ||
452 | /* If not all addresses fit the list, disable filtering */ | |
453 | if (ifa) { | |
454 | sdata->arp_filter_state = false; | |
455 | c = 0; | |
456 | } else { | |
457 | sdata->arp_filter_state = true; | |
458 | } | |
459 | bss_conf->arp_addr_cnt = c; | |
460 | ||
461 | /* Configure driver only if associated */ | |
462 | if (ifmgd->associated) { | |
463 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
464 | ieee80211_bss_info_change_notify(sdata, | |
465 | BSS_CHANGED_ARP_FILTER); | |
466 | } | |
467 | ||
2b2c009e JO |
468 | mutex_unlock(&ifmgd->mtx); |
469 | ||
470 | return NOTIFY_DONE; | |
471 | } | |
26b36cfe | 472 | #endif |
2b2c009e | 473 | |
4e6cbfd0 JL |
474 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
475 | { | |
476 | struct ieee80211_local *local = | |
477 | container_of(napi, struct ieee80211_local, napi); | |
478 | ||
479 | return local->ops->napi_poll(&local->hw, budget); | |
480 | } | |
481 | ||
482 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
483 | { | |
484 | struct ieee80211_local *local = hw_to_local(hw); | |
485 | ||
486 | napi_schedule(&local->napi); | |
487 | } | |
488 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
489 | ||
490 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
491 | { | |
492 | struct ieee80211_local *local = hw_to_local(hw); | |
493 | ||
494 | napi_complete(&local->napi); | |
495 | } | |
496 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
497 | ||
2e161f78 JB |
498 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
499 | static const struct ieee80211_txrx_stypes | |
500 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
501 | [NL80211_IFTYPE_ADHOC] = { | |
502 | .tx = 0xffff, | |
503 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
504 | }, | |
505 | [NL80211_IFTYPE_STATION] = { | |
506 | .tx = 0xffff, | |
507 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
508 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
509 | }, | |
510 | [NL80211_IFTYPE_AP] = { | |
511 | .tx = 0xffff, | |
512 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
513 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
514 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
515 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
516 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
517 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
518 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
519 | }, | |
520 | [NL80211_IFTYPE_AP_VLAN] = { | |
521 | /* copy AP */ | |
522 | .tx = 0xffff, | |
523 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
524 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
525 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
526 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
527 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
528 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
529 | BIT(IEEE80211_STYPE_ACTION >> 4), |
530 | }, | |
531 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
532 | .tx = 0xffff, | |
533 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
534 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
535 | }, | |
536 | [NL80211_IFTYPE_P2P_GO] = { | |
537 | .tx = 0xffff, | |
538 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
539 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
540 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
541 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
542 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
543 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
544 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
545 | }, | |
c7108a71 JC |
546 | [NL80211_IFTYPE_MESH_POINT] = { |
547 | .tx = 0xffff, | |
548 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
549 | }, | |
2e161f78 JB |
550 | }; |
551 | ||
f0706e82 JB |
552 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
553 | const struct ieee80211_ops *ops) | |
554 | { | |
f0706e82 | 555 | struct ieee80211_local *local; |
96f5e66e | 556 | int priv_size, i; |
f0706e82 JB |
557 | struct wiphy *wiphy; |
558 | ||
559 | /* Ensure 32-byte alignment of our private data and hw private data. | |
560 | * We use the wiphy priv data for both our ieee80211_local and for | |
561 | * the driver's private data | |
562 | * | |
563 | * In memory it'll be like this: | |
564 | * | |
565 | * +-------------------------+ | |
566 | * | struct wiphy | | |
567 | * +-------------------------+ | |
568 | * | struct ieee80211_local | | |
569 | * +-------------------------+ | |
570 | * | driver's private data | | |
571 | * +-------------------------+ | |
572 | * | |
573 | */ | |
1ce8e7b5 | 574 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
575 | |
576 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
577 | ||
578 | if (!wiphy) | |
579 | return NULL; | |
580 | ||
2e161f78 JB |
581 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
582 | ||
207aba60 JB |
583 | wiphy->privid = mac80211_wiphy_privid; |
584 | ||
9bc383de JB |
585 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
586 | WIPHY_FLAG_4ADDR_AP | | |
f7e0104c JB |
587 | WIPHY_FLAG_4ADDR_STATION | |
588 | WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS; | |
207aba60 JB |
589 | |
590 | if (!ops->set_key) | |
591 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 592 | |
0c1ad2ca | 593 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
594 | |
595 | local = wiphy_priv(wiphy); | |
de95a54b | 596 | |
f0706e82 JB |
597 | local->hw.wiphy = wiphy; |
598 | ||
1ce8e7b5 | 599 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 600 | |
4480f15c | 601 | BUG_ON(!ops->tx); |
4150c572 JB |
602 | BUG_ON(!ops->start); |
603 | BUG_ON(!ops->stop); | |
4480f15c JB |
604 | BUG_ON(!ops->config); |
605 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
606 | BUG_ON(!ops->remove_interface); |
607 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
608 | local->ops = ops; |
609 | ||
e6a9854b JB |
610 | /* set up some defaults */ |
611 | local->hw.queues = 1; | |
612 | local->hw.max_rates = 1; | |
78be49ec | 613 | local->hw.max_report_rates = 0; |
df6ba5d8 | 614 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
b9a5f8ca JM |
615 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
616 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 617 | local->user_power_level = -1; |
50ae0cf1 KV |
618 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
619 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 620 | |
79010420 | 621 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
622 | |
623 | __hw_addr_init(&local->mc_list); | |
624 | ||
c771c9d8 | 625 | mutex_init(&local->iflist_mtx); |
a1699b75 | 626 | mutex_init(&local->mtx); |
f0706e82 | 627 | |
ad0e2b5a | 628 | mutex_init(&local->key_mtx); |
3b8d81e0 | 629 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
630 | spin_lock_init(&local->queue_stop_reason_lock); |
631 | ||
681c4d07 JB |
632 | /* |
633 | * The rx_skb_queue is only accessed from tasklets, | |
634 | * but other SKB queues are used from within IRQ | |
635 | * context. Therefore, this one needs a different | |
636 | * locking class so our direct, non-irq-safe use of | |
637 | * the queue's lock doesn't throw lockdep warnings. | |
638 | */ | |
639 | skb_queue_head_init_class(&local->rx_skb_queue, | |
640 | &ieee80211_rx_skb_queue_class); | |
24a8fdad | 641 | |
c2b13452 | 642 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 643 | |
af6b6374 JB |
644 | ieee80211_work_init(local); |
645 | ||
f2753ddb JB |
646 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
647 | ||
3ac64bee | 648 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
649 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
650 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 651 | |
520eb820 KV |
652 | INIT_WORK(&local->dynamic_ps_enable_work, |
653 | ieee80211_dynamic_ps_enable_work); | |
654 | INIT_WORK(&local->dynamic_ps_disable_work, | |
655 | ieee80211_dynamic_ps_disable_work); | |
656 | setup_timer(&local->dynamic_ps_timer, | |
657 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
658 | ||
f0706e82 JB |
659 | sta_info_init(local); |
660 | ||
a6a67db2 | 661 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 662 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
663 | atomic_set(&local->agg_queue_stop[i], 0); |
664 | } | |
f0706e82 JB |
665 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
666 | (unsigned long)local); | |
f0706e82 JB |
667 | |
668 | tasklet_init(&local->tasklet, | |
669 | ieee80211_tasklet_handler, | |
670 | (unsigned long) local); | |
f0706e82 JB |
671 | |
672 | skb_queue_head_init(&local->skb_queue); | |
673 | skb_queue_head_init(&local->skb_queue_unreliable); | |
674 | ||
4e6cbfd0 JL |
675 | /* init dummy netdev for use w/ NAPI */ |
676 | init_dummy_netdev(&local->napi_dev); | |
677 | ||
fe67c913 JB |
678 | ieee80211_led_names(local); |
679 | ||
21f83589 JB |
680 | ieee80211_hw_roc_setup(local); |
681 | ||
f0706e82 JB |
682 | return local_to_hw(local); |
683 | } | |
684 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
685 | ||
686 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
687 | { | |
688 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 689 | int result; |
8318d78a | 690 | enum ieee80211_band band; |
be4a4b6a | 691 | int channels, max_bitrates; |
5ef2d41a | 692 | bool supp_ht; |
25e47c18 | 693 | static const u32 cipher_suites[] = { |
5daa8a8e | 694 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
695 | WLAN_CIPHER_SUITE_WEP40, |
696 | WLAN_CIPHER_SUITE_WEP104, | |
697 | WLAN_CIPHER_SUITE_TKIP, | |
698 | WLAN_CIPHER_SUITE_CCMP, | |
699 | ||
700 | /* keep last -- depends on hw flags! */ | |
701 | WLAN_CIPHER_SUITE_AES_CMAC | |
702 | }; | |
8318d78a | 703 | |
78be49ec HS |
704 | if (hw->max_report_rates == 0) |
705 | hw->max_report_rates = hw->max_rates; | |
706 | ||
8318d78a JB |
707 | /* |
708 | * generic code guarantees at least one band, | |
709 | * set this very early because much code assumes | |
710 | * that hw.conf.channel is assigned | |
711 | */ | |
2a519311 | 712 | channels = 0; |
de95a54b | 713 | max_bitrates = 0; |
5ef2d41a | 714 | supp_ht = false; |
8318d78a JB |
715 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
716 | struct ieee80211_supported_band *sband; | |
717 | ||
718 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
719 | if (!sband) |
720 | continue; | |
721 | if (!local->oper_channel) { | |
8318d78a JB |
722 | /* init channel we're on */ |
723 | local->hw.conf.channel = | |
58905ca5 JB |
724 | local->oper_channel = &sband->channels[0]; |
725 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 726 | } |
de95a54b JB |
727 | channels += sband->n_channels; |
728 | ||
8ba0537c JB |
729 | /* |
730 | * Since ieee80211_disable_40mhz_24ghz is global, we can | |
731 | * modify the sband's ht data even if the driver uses a | |
732 | * global structure for that. | |
733 | */ | |
734 | if (ieee80211_disable_40mhz_24ghz && | |
735 | band == IEEE80211_BAND_2GHZ && | |
736 | sband->ht_cap.ht_supported) { | |
737 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
738 | sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; | |
739 | } | |
740 | ||
de95a54b JB |
741 | if (max_bitrates < sband->n_bitrates) |
742 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 743 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 744 | } |
f0706e82 | 745 | |
5ba63533 JB |
746 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
747 | sizeof(void *) * channels, GFP_KERNEL); | |
748 | if (!local->int_scan_req) | |
2a519311 JB |
749 | return -ENOMEM; |
750 | ||
f59ac048 LR |
751 | /* if low-level driver supports AP, we also support VLAN */ |
752 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
753 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
754 | ||
755 | /* mac80211 always supports monitor */ | |
756 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
757 | ||
5eb5a52d JB |
758 | #ifndef CONFIG_MAC80211_MESH |
759 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
760 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
761 | #endif | |
762 | ||
a621fa4d JB |
763 | /* mac80211 supports control port protocol changing */ |
764 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
765 | ||
77965c97 JB |
766 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
767 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
768 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
769 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
770 | ||
ab13315a KV |
771 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
772 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
773 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
774 | ||
de95a54b JB |
775 | /* |
776 | * Calculate scan IE length -- we need this to alloc | |
777 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 778 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
779 | * information -- SSID is the driver's responsibility. |
780 | */ | |
dc9f48ce JM |
781 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
782 | 3 /* DS Params */; | |
5ef2d41a JB |
783 | if (supp_ht) |
784 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
785 | |
786 | if (!local->ops->hw_scan) { | |
787 | /* For hw_scan, driver needs to set these up. */ | |
788 | local->hw.wiphy->max_scan_ssids = 4; | |
789 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
790 | } | |
791 | ||
792 | /* | |
793 | * If the driver supports any scan IEs, then assume the | |
794 | * limit includes the IEs mac80211 will add, otherwise | |
795 | * leave it at zero and let the driver sort it out; we | |
796 | * still pass our IEs to the driver but userspace will | |
797 | * not be allowed to in that case. | |
798 | */ | |
799 | if (local->hw.wiphy->max_scan_ie_len) | |
800 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
801 | ||
3ffc2a90 JB |
802 | /* Set up cipher suites unless driver already did */ |
803 | if (!local->hw.wiphy->cipher_suites) { | |
804 | local->hw.wiphy->cipher_suites = cipher_suites; | |
805 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
806 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
807 | local->hw.wiphy->n_cipher_suites--; | |
808 | } | |
5daa8a8e | 809 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
810 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
811 | local->hw.wiphy->cipher_suites += 2; | |
812 | local->hw.wiphy->n_cipher_suites -= 2; | |
813 | } else { | |
814 | u32 *suites; | |
815 | int r, w = 0; | |
816 | ||
817 | /* Filter out WEP */ | |
818 | ||
819 | suites = kmemdup( | |
820 | local->hw.wiphy->cipher_suites, | |
821 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
822 | GFP_KERNEL); | |
823 | if (!suites) | |
824 | return -ENOMEM; | |
825 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
826 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
827 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
828 | suite == WLAN_CIPHER_SUITE_WEP104) | |
829 | continue; | |
830 | suites[w++] = suite; | |
831 | } | |
832 | local->hw.wiphy->cipher_suites = suites; | |
833 | local->hw.wiphy->n_cipher_suites = w; | |
834 | local->wiphy_ciphers_allocated = true; | |
835 | } | |
5daa8a8e | 836 | } |
25e47c18 | 837 | |
21f83589 JB |
838 | if (!local->ops->remain_on_channel) |
839 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 840 | |
f0706e82 JB |
841 | result = wiphy_register(local->hw.wiphy); |
842 | if (result < 0) | |
2a519311 | 843 | goto fail_wiphy_register; |
f0706e82 | 844 | |
e2530083 JB |
845 | /* |
846 | * We use the number of queues for feature tests (QoS, HT) internally | |
847 | * so restrict them appropriately. | |
848 | */ | |
e2530083 JB |
849 | if (hw->queues > IEEE80211_MAX_QUEUES) |
850 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 851 | |
42935eca | 852 | local->workqueue = |
99b88a0e | 853 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 854 | if (!local->workqueue) { |
f0706e82 JB |
855 | result = -ENOMEM; |
856 | goto fail_workqueue; | |
857 | } | |
858 | ||
b306f453 JB |
859 | /* |
860 | * The hardware needs headroom for sending the frame, | |
861 | * and we need some headroom for passing the frame to monitor | |
862 | * interfaces, but never both at the same time. | |
863 | */ | |
d24deb25 GW |
864 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
865 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
866 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
867 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 868 | |
e9f207f0 JB |
869 | debugfs_hw_add(local); |
870 | ||
b446918b HS |
871 | /* |
872 | * if the driver doesn't specify a max listen interval we | |
873 | * use 5 which should be a safe default | |
874 | */ | |
ea95bba4 | 875 | if (local->hw.max_listen_interval == 0) |
b446918b | 876 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
877 | |
878 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
879 | ||
ff616381 | 880 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 881 | |
f0706e82 JB |
882 | result = sta_info_start(local); |
883 | if (result < 0) | |
884 | goto fail_sta_info; | |
885 | ||
d4c4a9a1 | 886 | result = ieee80211_wep_init(local); |
3473187d | 887 | if (result < 0) |
0fb9a9ec JP |
888 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
889 | result); | |
d4c4a9a1 | 890 | |
f0706e82 | 891 | rtnl_lock(); |
f0706e82 | 892 | |
830f9038 JB |
893 | result = ieee80211_init_rate_ctrl_alg(local, |
894 | hw->rate_control_algorithm); | |
f0706e82 | 895 | if (result < 0) { |
0fb9a9ec JP |
896 | wiphy_debug(local->hw.wiphy, |
897 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
898 | goto fail_rate; |
899 | } | |
900 | ||
8dffff21 JB |
901 | /* add one default STA interface if supported */ |
902 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
903 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
904 | NL80211_IFTYPE_STATION, NULL); | |
905 | if (result) | |
0fb9a9ec JP |
906 | wiphy_warn(local->hw.wiphy, |
907 | "Failed to add default virtual iface\n"); | |
8dffff21 | 908 | } |
f0706e82 | 909 | |
f0706e82 JB |
910 | rtnl_unlock(); |
911 | ||
912 | ieee80211_led_init(local); | |
913 | ||
10f644a4 JB |
914 | local->network_latency_notifier.notifier_call = |
915 | ieee80211_max_network_latency; | |
916 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
917 | &local->network_latency_notifier); | |
10f644a4 JB |
918 | if (result) { |
919 | rtnl_lock(); | |
920 | goto fail_pm_qos; | |
921 | } | |
922 | ||
26b36cfe | 923 | #ifdef CONFIG_INET |
2b2c009e JO |
924 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
925 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
926 | if (result) | |
927 | goto fail_ifa; | |
26b36cfe | 928 | #endif |
2b2c009e | 929 | |
4e6cbfd0 JL |
930 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
931 | local->hw.napi_weight); | |
932 | ||
f0706e82 JB |
933 | return 0; |
934 | ||
93c08c32 | 935 | #ifdef CONFIG_INET |
2b2c009e JO |
936 | fail_ifa: |
937 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
938 | &local->network_latency_notifier); | |
939 | rtnl_lock(); | |
93c08c32 | 940 | #endif |
10f644a4 JB |
941 | fail_pm_qos: |
942 | ieee80211_led_exit(local); | |
943 | ieee80211_remove_interfaces(local); | |
10f644a4 | 944 | fail_rate: |
f0706e82 | 945 | rtnl_unlock(); |
d4c4a9a1 | 946 | ieee80211_wep_free(local); |
f0706e82 | 947 | sta_info_stop(local); |
10f644a4 | 948 | fail_sta_info: |
42935eca | 949 | destroy_workqueue(local->workqueue); |
10f644a4 | 950 | fail_workqueue: |
f0706e82 | 951 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 952 | fail_wiphy_register: |
3ffc2a90 JB |
953 | if (local->wiphy_ciphers_allocated) |
954 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 955 | kfree(local->int_scan_req); |
f0706e82 JB |
956 | return result; |
957 | } | |
958 | EXPORT_SYMBOL(ieee80211_register_hw); | |
959 | ||
f0706e82 JB |
960 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
961 | { | |
962 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
963 | |
964 | tasklet_kill(&local->tx_pending_tasklet); | |
965 | tasklet_kill(&local->tasklet); | |
966 | ||
10f644a4 JB |
967 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
968 | &local->network_latency_notifier); | |
26b36cfe | 969 | #ifdef CONFIG_INET |
2b2c009e | 970 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 971 | #endif |
10f644a4 | 972 | |
f0706e82 JB |
973 | rtnl_lock(); |
974 | ||
79010420 JB |
975 | /* |
976 | * At this point, interface list manipulations are fine | |
977 | * because the driver cannot be handing us frames any | |
978 | * more and the tasklet is killed. | |
979 | */ | |
75636525 | 980 | ieee80211_remove_interfaces(local); |
5b2812e9 | 981 | |
f0706e82 JB |
982 | rtnl_unlock(); |
983 | ||
071249b1 JB |
984 | /* |
985 | * Now all work items will be gone, but the | |
986 | * timer might still be armed, so delete it | |
987 | */ | |
988 | del_timer_sync(&local->work_timer); | |
989 | ||
258086a4 | 990 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
991 | cancel_work_sync(&local->reconfig_filter); |
992 | ||
f0706e82 JB |
993 | ieee80211_clear_tx_pending(local); |
994 | sta_info_stop(local); | |
995 | rate_control_deinitialize(local); | |
996 | ||
f64f9e71 JP |
997 | if (skb_queue_len(&local->skb_queue) || |
998 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 999 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1000 | skb_queue_purge(&local->skb_queue); |
1001 | skb_queue_purge(&local->skb_queue_unreliable); | |
24a8fdad | 1002 | skb_queue_purge(&local->rx_skb_queue); |
f0706e82 | 1003 | |
42935eca | 1004 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
1005 | wiphy_unregister(local->hw.wiphy); |
1006 | ieee80211_wep_free(local); | |
1007 | ieee80211_led_exit(local); | |
5ba63533 | 1008 | kfree(local->int_scan_req); |
f0706e82 JB |
1009 | } |
1010 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1011 | ||
1012 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1013 | { | |
1014 | struct ieee80211_local *local = hw_to_local(hw); | |
1015 | ||
c771c9d8 | 1016 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1017 | mutex_destroy(&local->mtx); |
c771c9d8 | 1018 | |
3ffc2a90 JB |
1019 | if (local->wiphy_ciphers_allocated) |
1020 | kfree(local->hw.wiphy->cipher_suites); | |
1021 | ||
f0706e82 JB |
1022 | wiphy_free(local->hw.wiphy); |
1023 | } | |
1024 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1025 | ||
f0706e82 JB |
1026 | static int __init ieee80211_init(void) |
1027 | { | |
1028 | struct sk_buff *skb; | |
1029 | int ret; | |
1030 | ||
e039fa4a JB |
1031 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1032 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1033 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1034 | |
cccf129f FF |
1035 | ret = rc80211_minstrel_init(); |
1036 | if (ret) | |
1037 | return ret; | |
1038 | ||
ec8aa669 FF |
1039 | ret = rc80211_minstrel_ht_init(); |
1040 | if (ret) | |
1041 | goto err_minstrel; | |
1042 | ||
4b475898 | 1043 | ret = rc80211_pid_init(); |
ad018375 | 1044 | if (ret) |
47846c9b | 1045 | goto err_pid; |
f0706e82 | 1046 | |
47846c9b JB |
1047 | ret = ieee80211_iface_init(); |
1048 | if (ret) | |
1049 | goto err_netdev; | |
e9f207f0 | 1050 | |
f0706e82 | 1051 | return 0; |
47846c9b JB |
1052 | err_netdev: |
1053 | rc80211_pid_exit(); | |
1054 | err_pid: | |
ec8aa669 FF |
1055 | rc80211_minstrel_ht_exit(); |
1056 | err_minstrel: | |
47846c9b JB |
1057 | rc80211_minstrel_exit(); |
1058 | ||
1059 | return ret; | |
f0706e82 JB |
1060 | } |
1061 | ||
f0706e82 JB |
1062 | static void __exit ieee80211_exit(void) |
1063 | { | |
4b475898 | 1064 | rc80211_pid_exit(); |
ec8aa669 | 1065 | rc80211_minstrel_ht_exit(); |
cccf129f | 1066 | rc80211_minstrel_exit(); |
ac71c691 | 1067 | |
f7a92144 LCC |
1068 | if (mesh_allocated) |
1069 | ieee80211s_stop(); | |
902acc78 | 1070 | |
47846c9b | 1071 | ieee80211_iface_exit(); |
f0706e82 JB |
1072 | } |
1073 | ||
1074 | ||
ca9938fe | 1075 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1076 | module_exit(ieee80211_exit); |
1077 | ||
1078 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1079 | MODULE_LICENSE("GPL"); |