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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> | |
20 | #include <linux/wireless.h> | |
21 | #include <linux/rtnetlink.h> | |
f0706e82 | 22 | #include <linux/bitmap.h> |
10f644a4 | 23 | #include <linux/pm_qos_params.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 | |
0d143fe1 | 36 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 37 | { |
3ac64bee | 38 | u64 mc; |
4150c572 JB |
39 | unsigned int changed_flags; |
40 | unsigned int new_flags = 0; | |
41 | ||
53918994 | 42 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
43 | new_flags |= FIF_PROMISC_IN_BSS; |
44 | ||
53918994 | 45 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
46 | new_flags |= FIF_ALLMULTI; |
47 | ||
3ac64bee | 48 | if (local->monitors || local->scanning) |
8cc9a739 MW |
49 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
50 | ||
51 | if (local->fif_fcsfail) | |
52 | new_flags |= FIF_FCSFAIL; | |
53 | ||
54 | if (local->fif_plcpfail) | |
55 | new_flags |= FIF_PLCPFAIL; | |
56 | ||
57 | if (local->fif_control) | |
58 | new_flags |= FIF_CONTROL; | |
59 | ||
60 | if (local->fif_other_bss) | |
61 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 62 | |
e3b90ca2 IP |
63 | if (local->fif_pspoll) |
64 | new_flags |= FIF_PSPOLL; | |
65 | ||
3ac64bee | 66 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
67 | changed_flags = local->filter_flags ^ new_flags; |
68 | ||
3ac64bee JB |
69 | mc = drv_prepare_multicast(local, local->mc_count, local->mc_list); |
70 | spin_unlock_bh(&local->filter_lock); | |
71 | ||
4150c572 JB |
72 | /* be a bit nasty */ |
73 | new_flags |= (1<<31); | |
74 | ||
3ac64bee | 75 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
76 | |
77 | WARN_ON(new_flags & (1<<31)); | |
78 | ||
79 | local->filter_flags = new_flags & ~(1<<31); | |
80 | } | |
81 | ||
3ac64bee JB |
82 | static void ieee80211_reconfig_filter(struct work_struct *work) |
83 | { | |
84 | struct ieee80211_local *local = | |
85 | container_of(work, struct ieee80211_local, reconfig_filter); | |
86 | ||
87 | ieee80211_configure_filter(local); | |
88 | } | |
89 | ||
e8975581 | 90 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 91 | { |
58905ca5 | 92 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 93 | int ret = 0; |
e8975581 | 94 | int power; |
094d05dc | 95 | enum nl80211_channel_type channel_type; |
f0706e82 | 96 | |
cb121bad JB |
97 | might_sleep(); |
98 | ||
58905ca5 JB |
99 | scan_chan = local->scan_channel; |
100 | ||
101 | if (scan_chan) { | |
102 | chan = scan_chan; | |
094d05dc | 103 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 104 | } else { |
b2c258fb | 105 | chan = local->oper_channel; |
094d05dc | 106 | channel_type = local->oper_channel_type; |
72bdcf34 | 107 | } |
f0706e82 | 108 | |
72bdcf34 | 109 | if (chan != local->hw.conf.channel || |
4797938c | 110 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 111 | local->hw.conf.channel = chan; |
4797938c | 112 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
113 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
114 | } | |
8318d78a | 115 | |
58905ca5 | 116 | if (scan_chan) |
e8975581 | 117 | power = chan->max_power; |
8318d78a | 118 | else |
a8302de9 VT |
119 | power = local->power_constr_level ? |
120 | (chan->max_power - local->power_constr_level) : | |
121 | chan->max_power; | |
122 | ||
47afbaf5 | 123 | if (local->user_power_level >= 0) |
a8302de9 VT |
124 | power = min(power, local->user_power_level); |
125 | ||
e8975581 JB |
126 | if (local->hw.conf.power_level != power) { |
127 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
128 | local->hw.conf.power_level = power; | |
129 | } | |
b2c258fb | 130 | |
e8975581 | 131 | if (changed && local->open_count) { |
24487981 | 132 | ret = drv_config(local, changed); |
d73782fd | 133 | /* |
447107fb | 134 | * Goal: |
d73782fd JB |
135 | * HW reconfiguration should never fail, the driver has told |
136 | * us what it can support so it should live up to that promise. | |
447107fb RC |
137 | * |
138 | * Current status: | |
139 | * rfkill is not integrated with mac80211 and a | |
140 | * configuration command can thus fail if hardware rfkill | |
141 | * is enabled | |
142 | * | |
143 | * FIXME: integrate rfkill with mac80211 and then add this | |
144 | * WARN_ON() back | |
145 | * | |
d73782fd | 146 | */ |
447107fb | 147 | /* WARN_ON(ret); */ |
d73782fd | 148 | } |
f0706e82 | 149 | |
b2c258fb JB |
150 | return ret; |
151 | } | |
f0706e82 | 152 | |
471b3efd JB |
153 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
154 | u32 changed) | |
d9430a32 | 155 | { |
471b3efd | 156 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 157 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
158 | |
159 | if (!changed) | |
160 | return; | |
161 | ||
9cef8737 JB |
162 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
163 | /* | |
164 | * While not associated, claim a BSSID of all-zeroes | |
165 | * so that drivers don't do any weird things with the | |
166 | * BSSID at that time. | |
167 | */ | |
168 | if (sdata->vif.bss_conf.assoc) | |
169 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
170 | else | |
171 | sdata->vif.bss_conf.bssid = zero; | |
172 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
173 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
174 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 175 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 176 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
177 | sdata->vif.bss_conf.bssid = zero; |
178 | } else { | |
179 | WARN_ON(1); | |
180 | return; | |
181 | } | |
182 | ||
183 | switch (sdata->vif.type) { | |
184 | case NL80211_IFTYPE_AP: | |
185 | case NL80211_IFTYPE_ADHOC: | |
186 | case NL80211_IFTYPE_MESH_POINT: | |
187 | break; | |
188 | default: | |
189 | /* do not warn to simplify caller in scan.c */ | |
190 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
191 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
192 | return; | |
193 | break; | |
194 | } | |
195 | ||
196 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
97af7432 BC |
197 | if (local->quiescing || !netif_running(sdata->dev) || |
198 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { | |
2d0ddec5 JB |
199 | sdata->vif.bss_conf.enable_beacon = false; |
200 | } else { | |
201 | /* | |
202 | * Beacon should be enabled, but AP mode must | |
203 | * check whether there is a beacon configured. | |
204 | */ | |
205 | switch (sdata->vif.type) { | |
206 | case NL80211_IFTYPE_AP: | |
207 | sdata->vif.bss_conf.enable_beacon = | |
208 | !!rcu_dereference(sdata->u.ap.beacon); | |
209 | break; | |
210 | case NL80211_IFTYPE_ADHOC: | |
211 | sdata->vif.bss_conf.enable_beacon = | |
212 | !!rcu_dereference(sdata->u.ibss.presp); | |
213 | break; | |
214 | case NL80211_IFTYPE_MESH_POINT: | |
215 | sdata->vif.bss_conf.enable_beacon = true; | |
216 | break; | |
217 | default: | |
218 | /* not reached */ | |
219 | WARN_ON(1); | |
220 | break; | |
221 | } | |
222 | } | |
223 | } | |
224 | ||
24487981 JB |
225 | drv_bss_info_changed(local, &sdata->vif, |
226 | &sdata->vif.bss_conf, changed); | |
d9430a32 DD |
227 | } |
228 | ||
f698d856 | 229 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 230 | { |
bda3933a JB |
231 | sdata->vif.bss_conf.use_cts_prot = false; |
232 | sdata->vif.bss_conf.use_short_preamble = false; | |
233 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
234 | return BSS_CHANGED_ERP_CTS_PROT | |
235 | BSS_CHANGED_ERP_PREAMBLE | | |
236 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
237 | } |
238 | ||
f0706e82 JB |
239 | static void ieee80211_tasklet_handler(unsigned long data) |
240 | { | |
241 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
242 | struct sk_buff *skb; | |
eadc8d9e | 243 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
244 | |
245 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
246 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
247 | switch (skb->pkt_type) { | |
248 | case IEEE80211_RX_MSG: | |
51fb61e7 | 249 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
250 | * netstack. */ |
251 | skb->pkt_type = 0; | |
f1d58c25 | 252 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
253 | break; |
254 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 255 | skb->pkt_type = 0; |
e039fa4a | 256 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 257 | break; |
eadc8d9e RR |
258 | case IEEE80211_DELBA_MSG: |
259 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
260 | ieee80211_stop_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
261 | ra_tid->tid); | |
eadc8d9e RR |
262 | dev_kfree_skb(skb); |
263 | break; | |
264 | case IEEE80211_ADDBA_MSG: | |
265 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
266 | ieee80211_start_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
267 | ra_tid->tid); | |
eadc8d9e RR |
268 | dev_kfree_skb(skb); |
269 | break ; | |
f4ea83dd | 270 | default: |
5e3f3089 LF |
271 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
272 | skb->pkt_type); | |
f0706e82 JB |
273 | dev_kfree_skb(skb); |
274 | break; | |
275 | } | |
276 | } | |
277 | } | |
278 | ||
f2753ddb JB |
279 | static void ieee80211_restart_work(struct work_struct *work) |
280 | { | |
281 | struct ieee80211_local *local = | |
282 | container_of(work, struct ieee80211_local, restart_work); | |
283 | ||
284 | rtnl_lock(); | |
285 | ieee80211_reconfig(local); | |
286 | rtnl_unlock(); | |
287 | } | |
288 | ||
289 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
290 | { | |
291 | struct ieee80211_local *local = hw_to_local(hw); | |
292 | ||
293 | /* use this reason, __ieee80211_resume will unblock it */ | |
294 | ieee80211_stop_queues_by_reason(hw, | |
295 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
296 | ||
297 | schedule_work(&local->restart_work); | |
298 | } | |
299 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
300 | ||
f0706e82 JB |
301 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
302 | const struct ieee80211_ops *ops) | |
303 | { | |
f0706e82 | 304 | struct ieee80211_local *local; |
96f5e66e | 305 | int priv_size, i; |
f0706e82 JB |
306 | struct wiphy *wiphy; |
307 | ||
308 | /* Ensure 32-byte alignment of our private data and hw private data. | |
309 | * We use the wiphy priv data for both our ieee80211_local and for | |
310 | * the driver's private data | |
311 | * | |
312 | * In memory it'll be like this: | |
313 | * | |
314 | * +-------------------------+ | |
315 | * | struct wiphy | | |
316 | * +-------------------------+ | |
317 | * | struct ieee80211_local | | |
318 | * +-------------------------+ | |
319 | * | driver's private data | | |
320 | * +-------------------------+ | |
321 | * | |
322 | */ | |
1ce8e7b5 | 323 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
324 | |
325 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
326 | ||
327 | if (!wiphy) | |
328 | return NULL; | |
329 | ||
9bc383de JB |
330 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
331 | WIPHY_FLAG_4ADDR_AP | | |
332 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 333 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 334 | |
00d3f14c JB |
335 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
336 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
337 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
338 | |
339 | local = wiphy_priv(wiphy); | |
de95a54b | 340 | |
f0706e82 JB |
341 | local->hw.wiphy = wiphy; |
342 | ||
1ce8e7b5 | 343 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 344 | |
4480f15c | 345 | BUG_ON(!ops->tx); |
4150c572 JB |
346 | BUG_ON(!ops->start); |
347 | BUG_ON(!ops->stop); | |
4480f15c JB |
348 | BUG_ON(!ops->config); |
349 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
350 | BUG_ON(!ops->remove_interface); |
351 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
352 | local->ops = ops; |
353 | ||
e6a9854b JB |
354 | /* set up some defaults */ |
355 | local->hw.queues = 1; | |
356 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
357 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
358 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 359 | local->user_power_level = -1; |
f0706e82 | 360 | |
79010420 | 361 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 362 | mutex_init(&local->iflist_mtx); |
f3b85252 | 363 | mutex_init(&local->scan_mtx); |
f0706e82 | 364 | |
b16bd15c | 365 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 366 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
367 | spin_lock_init(&local->queue_stop_reason_lock); |
368 | ||
c2b13452 | 369 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 370 | |
f2753ddb JB |
371 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
372 | ||
3ac64bee JB |
373 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
374 | ||
520eb820 KV |
375 | INIT_WORK(&local->dynamic_ps_enable_work, |
376 | ieee80211_dynamic_ps_enable_work); | |
377 | INIT_WORK(&local->dynamic_ps_disable_work, | |
378 | ieee80211_dynamic_ps_disable_work); | |
379 | setup_timer(&local->dynamic_ps_timer, | |
380 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
381 | ||
f0706e82 JB |
382 | sta_info_init(local); |
383 | ||
2a577d98 JB |
384 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
385 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
386 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
387 | (unsigned long)local); | |
f0706e82 JB |
388 | |
389 | tasklet_init(&local->tasklet, | |
390 | ieee80211_tasklet_handler, | |
391 | (unsigned long) local); | |
f0706e82 JB |
392 | |
393 | skb_queue_head_init(&local->skb_queue); | |
394 | skb_queue_head_init(&local->skb_queue_unreliable); | |
395 | ||
cd8ffc80 JB |
396 | spin_lock_init(&local->ampdu_lock); |
397 | ||
f0706e82 JB |
398 | return local_to_hw(local); |
399 | } | |
400 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
401 | ||
402 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
403 | { | |
404 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 405 | int result; |
8318d78a | 406 | enum ieee80211_band band; |
de95a54b | 407 | int channels, i, j, max_bitrates; |
5ef2d41a | 408 | bool supp_ht; |
25e47c18 JB |
409 | static const u32 cipher_suites[] = { |
410 | WLAN_CIPHER_SUITE_WEP40, | |
411 | WLAN_CIPHER_SUITE_WEP104, | |
412 | WLAN_CIPHER_SUITE_TKIP, | |
413 | WLAN_CIPHER_SUITE_CCMP, | |
414 | ||
415 | /* keep last -- depends on hw flags! */ | |
416 | WLAN_CIPHER_SUITE_AES_CMAC | |
417 | }; | |
8318d78a JB |
418 | |
419 | /* | |
420 | * generic code guarantees at least one band, | |
421 | * set this very early because much code assumes | |
422 | * that hw.conf.channel is assigned | |
423 | */ | |
2a519311 | 424 | channels = 0; |
de95a54b | 425 | max_bitrates = 0; |
5ef2d41a | 426 | supp_ht = false; |
8318d78a JB |
427 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
428 | struct ieee80211_supported_band *sband; | |
429 | ||
430 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
431 | if (!sband) |
432 | continue; | |
433 | if (!local->oper_channel) { | |
8318d78a JB |
434 | /* init channel we're on */ |
435 | local->hw.conf.channel = | |
58905ca5 JB |
436 | local->oper_channel = &sband->channels[0]; |
437 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 438 | } |
de95a54b JB |
439 | channels += sband->n_channels; |
440 | ||
441 | if (max_bitrates < sband->n_bitrates) | |
442 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 443 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 444 | } |
f0706e82 | 445 | |
5ba63533 JB |
446 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
447 | sizeof(void *) * channels, GFP_KERNEL); | |
448 | if (!local->int_scan_req) | |
2a519311 JB |
449 | return -ENOMEM; |
450 | ||
f59ac048 LR |
451 | /* if low-level driver supports AP, we also support VLAN */ |
452 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
453 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
454 | ||
455 | /* mac80211 always supports monitor */ | |
456 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
457 | ||
77965c97 JB |
458 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
459 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
460 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
461 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
462 | ||
de95a54b JB |
463 | /* |
464 | * Calculate scan IE length -- we need this to alloc | |
465 | * memory and to subtract from the driver limit. It | |
466 | * includes the (extended) supported rates and HT | |
467 | * information -- SSID is the driver's responsibility. | |
468 | */ | |
469 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
470 | if (supp_ht) |
471 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
472 | |
473 | if (!local->ops->hw_scan) { | |
474 | /* For hw_scan, driver needs to set these up. */ | |
475 | local->hw.wiphy->max_scan_ssids = 4; | |
476 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
477 | } | |
478 | ||
479 | /* | |
480 | * If the driver supports any scan IEs, then assume the | |
481 | * limit includes the IEs mac80211 will add, otherwise | |
482 | * leave it at zero and let the driver sort it out; we | |
483 | * still pass our IEs to the driver but userspace will | |
484 | * not be allowed to in that case. | |
485 | */ | |
486 | if (local->hw.wiphy->max_scan_ie_len) | |
487 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
488 | ||
25e47c18 JB |
489 | local->hw.wiphy->cipher_suites = cipher_suites; |
490 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
491 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
492 | local->hw.wiphy->n_cipher_suites--; | |
493 | ||
f0706e82 JB |
494 | result = wiphy_register(local->hw.wiphy); |
495 | if (result < 0) | |
2a519311 | 496 | goto fail_wiphy_register; |
f0706e82 | 497 | |
e2530083 JB |
498 | /* |
499 | * We use the number of queues for feature tests (QoS, HT) internally | |
500 | * so restrict them appropriately. | |
501 | */ | |
e2530083 JB |
502 | if (hw->queues > IEEE80211_MAX_QUEUES) |
503 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 504 | |
42935eca | 505 | local->workqueue = |
30d3ef41 | 506 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 507 | if (!local->workqueue) { |
f0706e82 JB |
508 | result = -ENOMEM; |
509 | goto fail_workqueue; | |
510 | } | |
511 | ||
b306f453 JB |
512 | /* |
513 | * The hardware needs headroom for sending the frame, | |
514 | * and we need some headroom for passing the frame to monitor | |
515 | * interfaces, but never both at the same time. | |
516 | */ | |
33ccad35 JB |
517 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
518 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 519 | |
e9f207f0 JB |
520 | debugfs_hw_add(local); |
521 | ||
ea95bba4 TW |
522 | if (local->hw.max_listen_interval == 0) |
523 | local->hw.max_listen_interval = 1; | |
524 | ||
525 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
526 | ||
f0706e82 JB |
527 | result = sta_info_start(local); |
528 | if (result < 0) | |
529 | goto fail_sta_info; | |
530 | ||
d4c4a9a1 AJ |
531 | result = ieee80211_wep_init(local); |
532 | if (result < 0) { | |
533 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
534 | wiphy_name(local->hw.wiphy), result); | |
535 | goto fail_wep; | |
536 | } | |
537 | ||
f0706e82 | 538 | rtnl_lock(); |
f0706e82 | 539 | |
830f9038 JB |
540 | result = ieee80211_init_rate_ctrl_alg(local, |
541 | hw->rate_control_algorithm); | |
f0706e82 JB |
542 | if (result < 0) { |
543 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 544 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
545 | goto fail_rate; |
546 | } | |
547 | ||
8dffff21 JB |
548 | /* add one default STA interface if supported */ |
549 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
550 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
551 | NL80211_IFTYPE_STATION, NULL); | |
552 | if (result) | |
553 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
554 | wiphy_name(local->hw.wiphy)); | |
555 | } | |
f0706e82 | 556 | |
f0706e82 JB |
557 | rtnl_unlock(); |
558 | ||
559 | ieee80211_led_init(local); | |
560 | ||
2a519311 JB |
561 | /* alloc internal scan request */ |
562 | i = 0; | |
5ba63533 JB |
563 | local->int_scan_req->ssids = &local->scan_ssid; |
564 | local->int_scan_req->n_ssids = 1; | |
2a519311 JB |
565 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
566 | if (!hw->wiphy->bands[band]) | |
567 | continue; | |
568 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
5ba63533 | 569 | local->int_scan_req->channels[i] = |
2a519311 JB |
570 | &hw->wiphy->bands[band]->channels[j]; |
571 | i++; | |
572 | } | |
573 | } | |
c327d967 | 574 | local->int_scan_req->n_channels = i; |
2a519311 | 575 | |
10f644a4 JB |
576 | local->network_latency_notifier.notifier_call = |
577 | ieee80211_max_network_latency; | |
578 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
579 | &local->network_latency_notifier); | |
580 | ||
581 | if (result) { | |
582 | rtnl_lock(); | |
583 | goto fail_pm_qos; | |
584 | } | |
585 | ||
f0706e82 JB |
586 | return 0; |
587 | ||
10f644a4 JB |
588 | fail_pm_qos: |
589 | ieee80211_led_exit(local); | |
590 | ieee80211_remove_interfaces(local); | |
10f644a4 | 591 | fail_rate: |
f0706e82 | 592 | rtnl_unlock(); |
d4c4a9a1 | 593 | ieee80211_wep_free(local); |
aba74530 | 594 | fail_wep: |
f0706e82 | 595 | sta_info_stop(local); |
10f644a4 | 596 | fail_sta_info: |
42935eca | 597 | destroy_workqueue(local->workqueue); |
10f644a4 | 598 | fail_workqueue: |
f0706e82 | 599 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 600 | fail_wiphy_register: |
11ba964d | 601 | kfree(local->int_scan_req); |
f0706e82 JB |
602 | return result; |
603 | } | |
604 | EXPORT_SYMBOL(ieee80211_register_hw); | |
605 | ||
f0706e82 JB |
606 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
607 | { | |
608 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
609 | |
610 | tasklet_kill(&local->tx_pending_tasklet); | |
611 | tasklet_kill(&local->tasklet); | |
612 | ||
10f644a4 JB |
613 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
614 | &local->network_latency_notifier); | |
615 | ||
f0706e82 JB |
616 | rtnl_lock(); |
617 | ||
79010420 JB |
618 | /* |
619 | * At this point, interface list manipulations are fine | |
620 | * because the driver cannot be handing us frames any | |
621 | * more and the tasklet is killed. | |
622 | */ | |
75636525 | 623 | ieee80211_remove_interfaces(local); |
5b2812e9 | 624 | |
f0706e82 JB |
625 | rtnl_unlock(); |
626 | ||
3ac64bee JB |
627 | cancel_work_sync(&local->reconfig_filter); |
628 | ||
f0706e82 JB |
629 | ieee80211_clear_tx_pending(local); |
630 | sta_info_stop(local); | |
631 | rate_control_deinitialize(local); | |
632 | ||
f64f9e71 JP |
633 | if (skb_queue_len(&local->skb_queue) || |
634 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 635 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 636 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
637 | skb_queue_purge(&local->skb_queue); |
638 | skb_queue_purge(&local->skb_queue_unreliable); | |
639 | ||
42935eca | 640 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
641 | wiphy_unregister(local->hw.wiphy); |
642 | ieee80211_wep_free(local); | |
643 | ieee80211_led_exit(local); | |
5ba63533 | 644 | kfree(local->int_scan_req); |
f0706e82 JB |
645 | } |
646 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
647 | ||
648 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
649 | { | |
650 | struct ieee80211_local *local = hw_to_local(hw); | |
651 | ||
c771c9d8 | 652 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 653 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 654 | |
f0706e82 JB |
655 | wiphy_free(local->hw.wiphy); |
656 | } | |
657 | EXPORT_SYMBOL(ieee80211_free_hw); | |
658 | ||
f0706e82 JB |
659 | static int __init ieee80211_init(void) |
660 | { | |
661 | struct sk_buff *skb; | |
662 | int ret; | |
663 | ||
e039fa4a JB |
664 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
665 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 666 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 667 | |
cccf129f FF |
668 | ret = rc80211_minstrel_init(); |
669 | if (ret) | |
670 | return ret; | |
671 | ||
4b475898 | 672 | ret = rc80211_pid_init(); |
ad018375 | 673 | if (ret) |
47846c9b | 674 | goto err_pid; |
f0706e82 | 675 | |
47846c9b JB |
676 | ret = ieee80211_iface_init(); |
677 | if (ret) | |
678 | goto err_netdev; | |
e9f207f0 | 679 | |
f0706e82 | 680 | return 0; |
47846c9b JB |
681 | err_netdev: |
682 | rc80211_pid_exit(); | |
683 | err_pid: | |
684 | rc80211_minstrel_exit(); | |
685 | ||
686 | return ret; | |
f0706e82 JB |
687 | } |
688 | ||
f0706e82 JB |
689 | static void __exit ieee80211_exit(void) |
690 | { | |
4b475898 | 691 | rc80211_pid_exit(); |
cccf129f | 692 | rc80211_minstrel_exit(); |
ac71c691 | 693 | |
3b96766f JB |
694 | /* |
695 | * For key todo, it'll be empty by now but the work | |
696 | * might still be scheduled. | |
697 | */ | |
698 | flush_scheduled_work(); | |
699 | ||
f7a92144 LCC |
700 | if (mesh_allocated) |
701 | ieee80211s_stop(); | |
902acc78 | 702 | |
47846c9b | 703 | ieee80211_iface_exit(); |
f0706e82 JB |
704 | } |
705 | ||
706 | ||
ca9938fe | 707 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
708 | module_exit(ieee80211_exit); |
709 | ||
710 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
711 | MODULE_LICENSE("GPL"); |