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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> |
881d966b | 23 | #include <net/net_namespace.h> |
f0706e82 JB |
24 | #include <net/cfg80211.h> |
25 | ||
f0706e82 | 26 | #include "ieee80211_i.h" |
24487981 | 27 | #include "driver-ops.h" |
2c8dccc7 | 28 | #include "rate.h" |
f7a92144 | 29 | #include "mesh.h" |
f0706e82 | 30 | #include "wep.h" |
2c8dccc7 | 31 | #include "led.h" |
e0eb6859 | 32 | #include "cfg.h" |
e9f207f0 | 33 | #include "debugfs.h" |
f0706e82 | 34 | |
f38fd12f JB |
35 | |
36 | bool ieee80211_disable_40mhz_24ghz; | |
37 | module_param(ieee80211_disable_40mhz_24ghz, bool, 0644); | |
38 | MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz, | |
39 | "Disable 40MHz support in the 2.4GHz band"); | |
40 | ||
0d143fe1 | 41 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 42 | { |
3ac64bee | 43 | u64 mc; |
4150c572 JB |
44 | unsigned int changed_flags; |
45 | unsigned int new_flags = 0; | |
46 | ||
53918994 | 47 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
48 | new_flags |= FIF_PROMISC_IN_BSS; |
49 | ||
53918994 | 50 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
51 | new_flags |= FIF_ALLMULTI; |
52 | ||
3ac64bee | 53 | if (local->monitors || local->scanning) |
8cc9a739 MW |
54 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
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; | |
4150c572 | 67 | |
e3b90ca2 IP |
68 | if (local->fif_pspoll) |
69 | new_flags |= FIF_PSPOLL; | |
70 | ||
3ac64bee | 71 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
72 | changed_flags = local->filter_flags ^ new_flags; |
73 | ||
3ac64bee JB |
74 | mc = drv_prepare_multicast(local, local->mc_count, local->mc_list); |
75 | spin_unlock_bh(&local->filter_lock); | |
76 | ||
4150c572 JB |
77 | /* be a bit nasty */ |
78 | new_flags |= (1<<31); | |
79 | ||
3ac64bee | 80 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
81 | |
82 | WARN_ON(new_flags & (1<<31)); | |
83 | ||
84 | local->filter_flags = new_flags & ~(1<<31); | |
85 | } | |
86 | ||
3ac64bee JB |
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 | ||
e8975581 | 95 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 96 | { |
58905ca5 | 97 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 98 | int ret = 0; |
e8975581 | 99 | int power; |
094d05dc | 100 | enum nl80211_channel_type channel_type; |
f0706e82 | 101 | |
cb121bad JB |
102 | might_sleep(); |
103 | ||
58905ca5 JB |
104 | scan_chan = local->scan_channel; |
105 | ||
106 | if (scan_chan) { | |
107 | chan = scan_chan; | |
094d05dc | 108 | channel_type = NL80211_CHAN_NO_HT; |
b8bc4b0a JB |
109 | } else if (local->tmp_channel) { |
110 | chan = scan_chan = local->tmp_channel; | |
111 | channel_type = local->tmp_channel_type; | |
72bdcf34 | 112 | } else { |
b2c258fb | 113 | chan = local->oper_channel; |
094d05dc | 114 | channel_type = local->oper_channel_type; |
72bdcf34 | 115 | } |
f0706e82 | 116 | |
72bdcf34 | 117 | if (chan != local->hw.conf.channel || |
4797938c | 118 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 119 | local->hw.conf.channel = chan; |
4797938c | 120 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
121 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
122 | } | |
8318d78a | 123 | |
0f78231b JB |
124 | if (!conf_is_ht(&local->hw.conf)) { |
125 | /* | |
126 | * mac80211.h documents that this is only valid | |
127 | * when the channel is set to an HT type, and | |
128 | * that otherwise STATIC is used. | |
129 | */ | |
130 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
131 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
132 | local->hw.conf.smps_mode = local->smps_mode; | |
133 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
134 | } | |
135 | ||
58905ca5 | 136 | if (scan_chan) |
e8975581 | 137 | power = chan->max_power; |
8318d78a | 138 | else |
a8302de9 VT |
139 | power = local->power_constr_level ? |
140 | (chan->max_power - local->power_constr_level) : | |
141 | chan->max_power; | |
142 | ||
47afbaf5 | 143 | if (local->user_power_level >= 0) |
a8302de9 VT |
144 | power = min(power, local->user_power_level); |
145 | ||
e8975581 JB |
146 | if (local->hw.conf.power_level != power) { |
147 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
148 | local->hw.conf.power_level = power; | |
149 | } | |
b2c258fb | 150 | |
e8975581 | 151 | if (changed && local->open_count) { |
24487981 | 152 | ret = drv_config(local, changed); |
d73782fd | 153 | /* |
447107fb | 154 | * Goal: |
d73782fd JB |
155 | * HW reconfiguration should never fail, the driver has told |
156 | * us what it can support so it should live up to that promise. | |
447107fb RC |
157 | * |
158 | * Current status: | |
159 | * rfkill is not integrated with mac80211 and a | |
160 | * configuration command can thus fail if hardware rfkill | |
161 | * is enabled | |
162 | * | |
163 | * FIXME: integrate rfkill with mac80211 and then add this | |
164 | * WARN_ON() back | |
165 | * | |
d73782fd | 166 | */ |
447107fb | 167 | /* WARN_ON(ret); */ |
d73782fd | 168 | } |
f0706e82 | 169 | |
b2c258fb JB |
170 | return ret; |
171 | } | |
f0706e82 | 172 | |
471b3efd JB |
173 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
174 | u32 changed) | |
d9430a32 | 175 | { |
471b3efd | 176 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 177 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
178 | |
179 | if (!changed) | |
180 | return; | |
181 | ||
9cef8737 JB |
182 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
183 | /* | |
184 | * While not associated, claim a BSSID of all-zeroes | |
185 | * so that drivers don't do any weird things with the | |
186 | * BSSID at that time. | |
187 | */ | |
188 | if (sdata->vif.bss_conf.assoc) | |
189 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
190 | else | |
191 | sdata->vif.bss_conf.bssid = zero; | |
192 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
193 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
194 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 195 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 196 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
197 | sdata->vif.bss_conf.bssid = zero; |
198 | } else { | |
199 | WARN_ON(1); | |
200 | return; | |
201 | } | |
202 | ||
203 | switch (sdata->vif.type) { | |
204 | case NL80211_IFTYPE_AP: | |
205 | case NL80211_IFTYPE_ADHOC: | |
206 | case NL80211_IFTYPE_MESH_POINT: | |
207 | break; | |
208 | default: | |
209 | /* do not warn to simplify caller in scan.c */ | |
210 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
211 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
212 | return; | |
213 | break; | |
214 | } | |
215 | ||
216 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 217 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
97af7432 | 218 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
2d0ddec5 JB |
219 | sdata->vif.bss_conf.enable_beacon = false; |
220 | } else { | |
221 | /* | |
222 | * Beacon should be enabled, but AP mode must | |
223 | * check whether there is a beacon configured. | |
224 | */ | |
225 | switch (sdata->vif.type) { | |
226 | case NL80211_IFTYPE_AP: | |
227 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 228 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
229 | break; |
230 | case NL80211_IFTYPE_ADHOC: | |
231 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 232 | !!sdata->u.ibss.presp; |
2d0ddec5 JB |
233 | break; |
234 | case NL80211_IFTYPE_MESH_POINT: | |
235 | sdata->vif.bss_conf.enable_beacon = true; | |
236 | break; | |
237 | default: | |
238 | /* not reached */ | |
239 | WARN_ON(1); | |
240 | break; | |
241 | } | |
242 | } | |
243 | } | |
244 | ||
12375ef9 | 245 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
246 | } |
247 | ||
f698d856 | 248 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 249 | { |
bda3933a JB |
250 | sdata->vif.bss_conf.use_cts_prot = false; |
251 | sdata->vif.bss_conf.use_short_preamble = false; | |
252 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
253 | return BSS_CHANGED_ERP_CTS_PROT | |
254 | BSS_CHANGED_ERP_PREAMBLE | | |
255 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
256 | } |
257 | ||
f0706e82 JB |
258 | static void ieee80211_tasklet_handler(unsigned long data) |
259 | { | |
260 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
261 | struct sk_buff *skb; | |
eadc8d9e | 262 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
263 | |
264 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
265 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
266 | switch (skb->pkt_type) { | |
267 | case IEEE80211_RX_MSG: | |
51fb61e7 | 268 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
269 | * netstack. */ |
270 | skb->pkt_type = 0; | |
f1d58c25 | 271 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
272 | break; |
273 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 274 | skb->pkt_type = 0; |
e039fa4a | 275 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 276 | break; |
eadc8d9e RR |
277 | case IEEE80211_DELBA_MSG: |
278 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
279 | ieee80211_stop_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
280 | ra_tid->tid); | |
eadc8d9e RR |
281 | dev_kfree_skb(skb); |
282 | break; | |
283 | case IEEE80211_ADDBA_MSG: | |
284 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
285 | ieee80211_start_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
286 | ra_tid->tid); | |
eadc8d9e RR |
287 | dev_kfree_skb(skb); |
288 | break ; | |
f4ea83dd | 289 | default: |
5e3f3089 LF |
290 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
291 | skb->pkt_type); | |
f0706e82 JB |
292 | dev_kfree_skb(skb); |
293 | break; | |
294 | } | |
295 | } | |
296 | } | |
297 | ||
f2753ddb JB |
298 | static void ieee80211_restart_work(struct work_struct *work) |
299 | { | |
300 | struct ieee80211_local *local = | |
301 | container_of(work, struct ieee80211_local, restart_work); | |
302 | ||
303 | rtnl_lock(); | |
304 | ieee80211_reconfig(local); | |
305 | rtnl_unlock(); | |
306 | } | |
307 | ||
308 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
309 | { | |
310 | struct ieee80211_local *local = hw_to_local(hw); | |
311 | ||
b5878a2d JB |
312 | trace_api_restart_hw(local); |
313 | ||
f2753ddb JB |
314 | /* use this reason, __ieee80211_resume will unblock it */ |
315 | ieee80211_stop_queues_by_reason(hw, | |
316 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
317 | ||
318 | schedule_work(&local->restart_work); | |
319 | } | |
320 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
321 | ||
0f78231b JB |
322 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
323 | { | |
324 | struct ieee80211_local *local = | |
325 | container_of(work, struct ieee80211_local, recalc_smps); | |
326 | ||
327 | mutex_lock(&local->iflist_mtx); | |
328 | ieee80211_recalc_smps(local, NULL); | |
329 | mutex_unlock(&local->iflist_mtx); | |
330 | } | |
331 | ||
f0706e82 JB |
332 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
333 | const struct ieee80211_ops *ops) | |
334 | { | |
f0706e82 | 335 | struct ieee80211_local *local; |
96f5e66e | 336 | int priv_size, i; |
f0706e82 JB |
337 | struct wiphy *wiphy; |
338 | ||
339 | /* Ensure 32-byte alignment of our private data and hw private data. | |
340 | * We use the wiphy priv data for both our ieee80211_local and for | |
341 | * the driver's private data | |
342 | * | |
343 | * In memory it'll be like this: | |
344 | * | |
345 | * +-------------------------+ | |
346 | * | struct wiphy | | |
347 | * +-------------------------+ | |
348 | * | struct ieee80211_local | | |
349 | * +-------------------------+ | |
350 | * | driver's private data | | |
351 | * +-------------------------+ | |
352 | * | |
353 | */ | |
1ce8e7b5 | 354 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
355 | |
356 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
357 | ||
358 | if (!wiphy) | |
359 | return NULL; | |
360 | ||
9bc383de JB |
361 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
362 | WIPHY_FLAG_4ADDR_AP | | |
363 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 364 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 365 | |
0c1ad2ca | 366 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
367 | |
368 | local = wiphy_priv(wiphy); | |
de95a54b | 369 | |
f0706e82 JB |
370 | local->hw.wiphy = wiphy; |
371 | ||
1ce8e7b5 | 372 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 373 | |
4480f15c | 374 | BUG_ON(!ops->tx); |
4150c572 JB |
375 | BUG_ON(!ops->start); |
376 | BUG_ON(!ops->stop); | |
4480f15c JB |
377 | BUG_ON(!ops->config); |
378 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
379 | BUG_ON(!ops->remove_interface); |
380 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
381 | local->ops = ops; |
382 | ||
e6a9854b JB |
383 | /* set up some defaults */ |
384 | local->hw.queues = 1; | |
385 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
386 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
387 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 388 | local->user_power_level = -1; |
50ae0cf1 KV |
389 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
390 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 391 | |
79010420 | 392 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 393 | mutex_init(&local->iflist_mtx); |
f3b85252 | 394 | mutex_init(&local->scan_mtx); |
f0706e82 | 395 | |
b16bd15c | 396 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 397 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
398 | spin_lock_init(&local->queue_stop_reason_lock); |
399 | ||
c2b13452 | 400 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 401 | |
af6b6374 JB |
402 | ieee80211_work_init(local); |
403 | ||
f2753ddb JB |
404 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
405 | ||
3ac64bee | 406 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
407 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
408 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 409 | |
520eb820 KV |
410 | INIT_WORK(&local->dynamic_ps_enable_work, |
411 | ieee80211_dynamic_ps_enable_work); | |
412 | INIT_WORK(&local->dynamic_ps_disable_work, | |
413 | ieee80211_dynamic_ps_disable_work); | |
414 | setup_timer(&local->dynamic_ps_timer, | |
415 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
416 | ||
f0706e82 JB |
417 | sta_info_init(local); |
418 | ||
2a577d98 JB |
419 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
420 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
421 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
422 | (unsigned long)local); | |
f0706e82 JB |
423 | |
424 | tasklet_init(&local->tasklet, | |
425 | ieee80211_tasklet_handler, | |
426 | (unsigned long) local); | |
f0706e82 JB |
427 | |
428 | skb_queue_head_init(&local->skb_queue); | |
429 | skb_queue_head_init(&local->skb_queue_unreliable); | |
430 | ||
cd8ffc80 JB |
431 | spin_lock_init(&local->ampdu_lock); |
432 | ||
f0706e82 JB |
433 | return local_to_hw(local); |
434 | } | |
435 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
436 | ||
437 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
438 | { | |
439 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 440 | int result; |
8318d78a | 441 | enum ieee80211_band band; |
de95a54b | 442 | int channels, i, j, max_bitrates; |
5ef2d41a | 443 | bool supp_ht; |
25e47c18 JB |
444 | static const u32 cipher_suites[] = { |
445 | WLAN_CIPHER_SUITE_WEP40, | |
446 | WLAN_CIPHER_SUITE_WEP104, | |
447 | WLAN_CIPHER_SUITE_TKIP, | |
448 | WLAN_CIPHER_SUITE_CCMP, | |
449 | ||
450 | /* keep last -- depends on hw flags! */ | |
451 | WLAN_CIPHER_SUITE_AES_CMAC | |
452 | }; | |
8318d78a JB |
453 | |
454 | /* | |
455 | * generic code guarantees at least one band, | |
456 | * set this very early because much code assumes | |
457 | * that hw.conf.channel is assigned | |
458 | */ | |
2a519311 | 459 | channels = 0; |
de95a54b | 460 | max_bitrates = 0; |
5ef2d41a | 461 | supp_ht = false; |
8318d78a JB |
462 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
463 | struct ieee80211_supported_band *sband; | |
464 | ||
465 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
466 | if (!sband) |
467 | continue; | |
468 | if (!local->oper_channel) { | |
8318d78a JB |
469 | /* init channel we're on */ |
470 | local->hw.conf.channel = | |
58905ca5 JB |
471 | local->oper_channel = &sband->channels[0]; |
472 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 473 | } |
de95a54b JB |
474 | channels += sband->n_channels; |
475 | ||
476 | if (max_bitrates < sband->n_bitrates) | |
477 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 478 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 479 | } |
f0706e82 | 480 | |
5ba63533 JB |
481 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
482 | sizeof(void *) * channels, GFP_KERNEL); | |
483 | if (!local->int_scan_req) | |
2a519311 JB |
484 | return -ENOMEM; |
485 | ||
f59ac048 LR |
486 | /* if low-level driver supports AP, we also support VLAN */ |
487 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
488 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
489 | ||
490 | /* mac80211 always supports monitor */ | |
491 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
492 | ||
77965c97 JB |
493 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
494 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
495 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
496 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
497 | ||
ab13315a KV |
498 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
499 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
500 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
501 | ||
de95a54b JB |
502 | /* |
503 | * Calculate scan IE length -- we need this to alloc | |
504 | * memory and to subtract from the driver limit. It | |
505 | * includes the (extended) supported rates and HT | |
506 | * information -- SSID is the driver's responsibility. | |
507 | */ | |
508 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
509 | if (supp_ht) |
510 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
511 | |
512 | if (!local->ops->hw_scan) { | |
513 | /* For hw_scan, driver needs to set these up. */ | |
514 | local->hw.wiphy->max_scan_ssids = 4; | |
515 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
516 | } | |
517 | ||
518 | /* | |
519 | * If the driver supports any scan IEs, then assume the | |
520 | * limit includes the IEs mac80211 will add, otherwise | |
521 | * leave it at zero and let the driver sort it out; we | |
522 | * still pass our IEs to the driver but userspace will | |
523 | * not be allowed to in that case. | |
524 | */ | |
525 | if (local->hw.wiphy->max_scan_ie_len) | |
526 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
527 | ||
25e47c18 JB |
528 | local->hw.wiphy->cipher_suites = cipher_suites; |
529 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
530 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
531 | local->hw.wiphy->n_cipher_suites--; | |
532 | ||
f0706e82 JB |
533 | result = wiphy_register(local->hw.wiphy); |
534 | if (result < 0) | |
2a519311 | 535 | goto fail_wiphy_register; |
f0706e82 | 536 | |
e2530083 JB |
537 | /* |
538 | * We use the number of queues for feature tests (QoS, HT) internally | |
539 | * so restrict them appropriately. | |
540 | */ | |
e2530083 JB |
541 | if (hw->queues > IEEE80211_MAX_QUEUES) |
542 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 543 | |
42935eca | 544 | local->workqueue = |
30d3ef41 | 545 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 546 | if (!local->workqueue) { |
f0706e82 JB |
547 | result = -ENOMEM; |
548 | goto fail_workqueue; | |
549 | } | |
550 | ||
b306f453 JB |
551 | /* |
552 | * The hardware needs headroom for sending the frame, | |
553 | * and we need some headroom for passing the frame to monitor | |
554 | * interfaces, but never both at the same time. | |
555 | */ | |
d24deb25 GW |
556 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
557 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
558 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
559 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 560 | |
e9f207f0 JB |
561 | debugfs_hw_add(local); |
562 | ||
b446918b HS |
563 | /* |
564 | * if the driver doesn't specify a max listen interval we | |
565 | * use 5 which should be a safe default | |
566 | */ | |
ea95bba4 | 567 | if (local->hw.max_listen_interval == 0) |
b446918b | 568 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
569 | |
570 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
571 | ||
f0706e82 JB |
572 | result = sta_info_start(local); |
573 | if (result < 0) | |
574 | goto fail_sta_info; | |
575 | ||
d4c4a9a1 AJ |
576 | result = ieee80211_wep_init(local); |
577 | if (result < 0) { | |
578 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
579 | wiphy_name(local->hw.wiphy), result); | |
580 | goto fail_wep; | |
581 | } | |
582 | ||
f0706e82 | 583 | rtnl_lock(); |
f0706e82 | 584 | |
830f9038 JB |
585 | result = ieee80211_init_rate_ctrl_alg(local, |
586 | hw->rate_control_algorithm); | |
f0706e82 JB |
587 | if (result < 0) { |
588 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 589 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
590 | goto fail_rate; |
591 | } | |
592 | ||
8dffff21 JB |
593 | /* add one default STA interface if supported */ |
594 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
595 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
596 | NL80211_IFTYPE_STATION, NULL); | |
597 | if (result) | |
598 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
599 | wiphy_name(local->hw.wiphy)); | |
600 | } | |
f0706e82 | 601 | |
f0706e82 JB |
602 | rtnl_unlock(); |
603 | ||
604 | ieee80211_led_init(local); | |
605 | ||
2a519311 JB |
606 | /* alloc internal scan request */ |
607 | i = 0; | |
5ba63533 JB |
608 | local->int_scan_req->ssids = &local->scan_ssid; |
609 | local->int_scan_req->n_ssids = 1; | |
2a519311 JB |
610 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
611 | if (!hw->wiphy->bands[band]) | |
612 | continue; | |
613 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
5ba63533 | 614 | local->int_scan_req->channels[i] = |
2a519311 JB |
615 | &hw->wiphy->bands[band]->channels[j]; |
616 | i++; | |
617 | } | |
618 | } | |
c327d967 | 619 | local->int_scan_req->n_channels = i; |
2a519311 | 620 | |
10f644a4 JB |
621 | local->network_latency_notifier.notifier_call = |
622 | ieee80211_max_network_latency; | |
623 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
624 | &local->network_latency_notifier); | |
625 | ||
626 | if (result) { | |
627 | rtnl_lock(); | |
628 | goto fail_pm_qos; | |
629 | } | |
630 | ||
f0706e82 JB |
631 | return 0; |
632 | ||
10f644a4 JB |
633 | fail_pm_qos: |
634 | ieee80211_led_exit(local); | |
635 | ieee80211_remove_interfaces(local); | |
10f644a4 | 636 | fail_rate: |
f0706e82 | 637 | rtnl_unlock(); |
d4c4a9a1 | 638 | ieee80211_wep_free(local); |
aba74530 | 639 | fail_wep: |
f0706e82 | 640 | sta_info_stop(local); |
10f644a4 | 641 | fail_sta_info: |
42935eca | 642 | destroy_workqueue(local->workqueue); |
10f644a4 | 643 | fail_workqueue: |
f0706e82 | 644 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 645 | fail_wiphy_register: |
11ba964d | 646 | kfree(local->int_scan_req); |
f0706e82 JB |
647 | return result; |
648 | } | |
649 | EXPORT_SYMBOL(ieee80211_register_hw); | |
650 | ||
f0706e82 JB |
651 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
652 | { | |
653 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
654 | |
655 | tasklet_kill(&local->tx_pending_tasklet); | |
656 | tasklet_kill(&local->tasklet); | |
657 | ||
10f644a4 JB |
658 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
659 | &local->network_latency_notifier); | |
660 | ||
f0706e82 JB |
661 | rtnl_lock(); |
662 | ||
79010420 JB |
663 | /* |
664 | * At this point, interface list manipulations are fine | |
665 | * because the driver cannot be handing us frames any | |
666 | * more and the tasklet is killed. | |
667 | */ | |
75636525 | 668 | ieee80211_remove_interfaces(local); |
5b2812e9 | 669 | |
f0706e82 JB |
670 | rtnl_unlock(); |
671 | ||
3ac64bee JB |
672 | cancel_work_sync(&local->reconfig_filter); |
673 | ||
f0706e82 JB |
674 | ieee80211_clear_tx_pending(local); |
675 | sta_info_stop(local); | |
676 | rate_control_deinitialize(local); | |
677 | ||
f64f9e71 JP |
678 | if (skb_queue_len(&local->skb_queue) || |
679 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 680 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 681 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
682 | skb_queue_purge(&local->skb_queue); |
683 | skb_queue_purge(&local->skb_queue_unreliable); | |
684 | ||
42935eca | 685 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
686 | wiphy_unregister(local->hw.wiphy); |
687 | ieee80211_wep_free(local); | |
688 | ieee80211_led_exit(local); | |
5ba63533 | 689 | kfree(local->int_scan_req); |
f0706e82 JB |
690 | } |
691 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
692 | ||
693 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
694 | { | |
695 | struct ieee80211_local *local = hw_to_local(hw); | |
696 | ||
c771c9d8 | 697 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 698 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 699 | |
f0706e82 JB |
700 | wiphy_free(local->hw.wiphy); |
701 | } | |
702 | EXPORT_SYMBOL(ieee80211_free_hw); | |
703 | ||
f0706e82 JB |
704 | static int __init ieee80211_init(void) |
705 | { | |
706 | struct sk_buff *skb; | |
707 | int ret; | |
708 | ||
e039fa4a JB |
709 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
710 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 711 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 712 | |
cccf129f FF |
713 | ret = rc80211_minstrel_init(); |
714 | if (ret) | |
715 | return ret; | |
716 | ||
4b475898 | 717 | ret = rc80211_pid_init(); |
ad018375 | 718 | if (ret) |
47846c9b | 719 | goto err_pid; |
f0706e82 | 720 | |
47846c9b JB |
721 | ret = ieee80211_iface_init(); |
722 | if (ret) | |
723 | goto err_netdev; | |
e9f207f0 | 724 | |
f0706e82 | 725 | return 0; |
47846c9b JB |
726 | err_netdev: |
727 | rc80211_pid_exit(); | |
728 | err_pid: | |
729 | rc80211_minstrel_exit(); | |
730 | ||
731 | return ret; | |
f0706e82 JB |
732 | } |
733 | ||
f0706e82 JB |
734 | static void __exit ieee80211_exit(void) |
735 | { | |
4b475898 | 736 | rc80211_pid_exit(); |
cccf129f | 737 | rc80211_minstrel_exit(); |
ac71c691 | 738 | |
3b96766f JB |
739 | /* |
740 | * For key todo, it'll be empty by now but the work | |
741 | * might still be scheduled. | |
742 | */ | |
743 | flush_scheduled_work(); | |
744 | ||
f7a92144 LCC |
745 | if (mesh_allocated) |
746 | ieee80211s_stop(); | |
902acc78 | 747 | |
47846c9b | 748 | ieee80211_iface_exit(); |
f0706e82 JB |
749 | } |
750 | ||
751 | ||
ca9938fe | 752 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
753 | module_exit(ieee80211_exit); |
754 | ||
755 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
756 | MODULE_LICENSE("GPL"); |