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 | |
f38fd12f JB |
36 | |
37 | bool ieee80211_disable_40mhz_24ghz; | |
38 | module_param(ieee80211_disable_40mhz_24ghz, bool, 0644); | |
39 | MODULE_PARM_DESC(ieee80211_disable_40mhz_24ghz, | |
40 | "Disable 40MHz support in the 2.4GHz band"); | |
41 | ||
0d143fe1 | 42 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 43 | { |
3ac64bee | 44 | u64 mc; |
4150c572 JB |
45 | unsigned int changed_flags; |
46 | unsigned int new_flags = 0; | |
47 | ||
53918994 | 48 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
49 | new_flags |= FIF_PROMISC_IN_BSS; |
50 | ||
53918994 | 51 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
52 | new_flags |= FIF_ALLMULTI; |
53 | ||
3ac64bee | 54 | if (local->monitors || local->scanning) |
8cc9a739 MW |
55 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
56 | ||
57 | if (local->fif_fcsfail) | |
58 | new_flags |= FIF_FCSFAIL; | |
59 | ||
60 | if (local->fif_plcpfail) | |
61 | new_flags |= FIF_PLCPFAIL; | |
62 | ||
63 | if (local->fif_control) | |
64 | new_flags |= FIF_CONTROL; | |
65 | ||
66 | if (local->fif_other_bss) | |
67 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 68 | |
e3b90ca2 IP |
69 | if (local->fif_pspoll) |
70 | new_flags |= FIF_PSPOLL; | |
71 | ||
3ac64bee | 72 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
73 | changed_flags = local->filter_flags ^ new_flags; |
74 | ||
3ac64bee JB |
75 | mc = drv_prepare_multicast(local, local->mc_count, local->mc_list); |
76 | spin_unlock_bh(&local->filter_lock); | |
77 | ||
4150c572 JB |
78 | /* be a bit nasty */ |
79 | new_flags |= (1<<31); | |
80 | ||
3ac64bee | 81 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
82 | |
83 | WARN_ON(new_flags & (1<<31)); | |
84 | ||
85 | local->filter_flags = new_flags & ~(1<<31); | |
86 | } | |
87 | ||
3ac64bee JB |
88 | static void ieee80211_reconfig_filter(struct work_struct *work) |
89 | { | |
90 | struct ieee80211_local *local = | |
91 | container_of(work, struct ieee80211_local, reconfig_filter); | |
92 | ||
93 | ieee80211_configure_filter(local); | |
94 | } | |
95 | ||
e8975581 | 96 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 97 | { |
58905ca5 | 98 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 99 | int ret = 0; |
e8975581 | 100 | int power; |
094d05dc | 101 | enum nl80211_channel_type channel_type; |
f0706e82 | 102 | |
cb121bad JB |
103 | might_sleep(); |
104 | ||
58905ca5 JB |
105 | scan_chan = local->scan_channel; |
106 | ||
107 | if (scan_chan) { | |
108 | chan = scan_chan; | |
094d05dc | 109 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 110 | } else { |
b2c258fb | 111 | chan = local->oper_channel; |
094d05dc | 112 | channel_type = local->oper_channel_type; |
72bdcf34 | 113 | } |
f0706e82 | 114 | |
72bdcf34 | 115 | if (chan != local->hw.conf.channel || |
4797938c | 116 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 117 | local->hw.conf.channel = chan; |
4797938c | 118 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
119 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
120 | } | |
8318d78a | 121 | |
0f78231b JB |
122 | if (!conf_is_ht(&local->hw.conf)) { |
123 | /* | |
124 | * mac80211.h documents that this is only valid | |
125 | * when the channel is set to an HT type, and | |
126 | * that otherwise STATIC is used. | |
127 | */ | |
128 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
129 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
130 | local->hw.conf.smps_mode = local->smps_mode; | |
131 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
132 | } | |
133 | ||
58905ca5 | 134 | if (scan_chan) |
e8975581 | 135 | power = chan->max_power; |
8318d78a | 136 | else |
a8302de9 VT |
137 | power = local->power_constr_level ? |
138 | (chan->max_power - local->power_constr_level) : | |
139 | chan->max_power; | |
140 | ||
47afbaf5 | 141 | if (local->user_power_level >= 0) |
a8302de9 VT |
142 | power = min(power, local->user_power_level); |
143 | ||
e8975581 JB |
144 | if (local->hw.conf.power_level != power) { |
145 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
146 | local->hw.conf.power_level = power; | |
147 | } | |
b2c258fb | 148 | |
e8975581 | 149 | if (changed && local->open_count) { |
24487981 | 150 | ret = drv_config(local, changed); |
d73782fd | 151 | /* |
447107fb | 152 | * Goal: |
d73782fd JB |
153 | * HW reconfiguration should never fail, the driver has told |
154 | * us what it can support so it should live up to that promise. | |
447107fb RC |
155 | * |
156 | * Current status: | |
157 | * rfkill is not integrated with mac80211 and a | |
158 | * configuration command can thus fail if hardware rfkill | |
159 | * is enabled | |
160 | * | |
161 | * FIXME: integrate rfkill with mac80211 and then add this | |
162 | * WARN_ON() back | |
163 | * | |
d73782fd | 164 | */ |
447107fb | 165 | /* WARN_ON(ret); */ |
d73782fd | 166 | } |
f0706e82 | 167 | |
b2c258fb JB |
168 | return ret; |
169 | } | |
f0706e82 | 170 | |
471b3efd JB |
171 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
172 | u32 changed) | |
d9430a32 | 173 | { |
471b3efd | 174 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 175 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
176 | |
177 | if (!changed) | |
178 | return; | |
179 | ||
9cef8737 JB |
180 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
181 | /* | |
182 | * While not associated, claim a BSSID of all-zeroes | |
183 | * so that drivers don't do any weird things with the | |
184 | * BSSID at that time. | |
185 | */ | |
186 | if (sdata->vif.bss_conf.assoc) | |
187 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
188 | else | |
189 | sdata->vif.bss_conf.bssid = zero; | |
190 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
191 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
192 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 193 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 194 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
195 | sdata->vif.bss_conf.bssid = zero; |
196 | } else { | |
197 | WARN_ON(1); | |
198 | return; | |
199 | } | |
200 | ||
201 | switch (sdata->vif.type) { | |
202 | case NL80211_IFTYPE_AP: | |
203 | case NL80211_IFTYPE_ADHOC: | |
204 | case NL80211_IFTYPE_MESH_POINT: | |
205 | break; | |
206 | default: | |
207 | /* do not warn to simplify caller in scan.c */ | |
208 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
209 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
210 | return; | |
211 | break; | |
212 | } | |
213 | ||
214 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
97af7432 BC |
215 | if (local->quiescing || !netif_running(sdata->dev) || |
216 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { | |
2d0ddec5 JB |
217 | sdata->vif.bss_conf.enable_beacon = false; |
218 | } else { | |
219 | /* | |
220 | * Beacon should be enabled, but AP mode must | |
221 | * check whether there is a beacon configured. | |
222 | */ | |
223 | switch (sdata->vif.type) { | |
224 | case NL80211_IFTYPE_AP: | |
225 | sdata->vif.bss_conf.enable_beacon = | |
226 | !!rcu_dereference(sdata->u.ap.beacon); | |
227 | break; | |
228 | case NL80211_IFTYPE_ADHOC: | |
229 | sdata->vif.bss_conf.enable_beacon = | |
230 | !!rcu_dereference(sdata->u.ibss.presp); | |
231 | break; | |
232 | case NL80211_IFTYPE_MESH_POINT: | |
233 | sdata->vif.bss_conf.enable_beacon = true; | |
234 | break; | |
235 | default: | |
236 | /* not reached */ | |
237 | WARN_ON(1); | |
238 | break; | |
239 | } | |
240 | } | |
241 | } | |
242 | ||
12375ef9 | 243 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
244 | } |
245 | ||
f698d856 | 246 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 247 | { |
bda3933a JB |
248 | sdata->vif.bss_conf.use_cts_prot = false; |
249 | sdata->vif.bss_conf.use_short_preamble = false; | |
250 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
251 | return BSS_CHANGED_ERP_CTS_PROT | |
252 | BSS_CHANGED_ERP_PREAMBLE | | |
253 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
254 | } |
255 | ||
f0706e82 JB |
256 | static void ieee80211_tasklet_handler(unsigned long data) |
257 | { | |
258 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
259 | struct sk_buff *skb; | |
eadc8d9e | 260 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
261 | |
262 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
263 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
264 | switch (skb->pkt_type) { | |
265 | case IEEE80211_RX_MSG: | |
51fb61e7 | 266 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
267 | * netstack. */ |
268 | skb->pkt_type = 0; | |
f1d58c25 | 269 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
270 | break; |
271 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 272 | skb->pkt_type = 0; |
e039fa4a | 273 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 274 | break; |
eadc8d9e RR |
275 | case IEEE80211_DELBA_MSG: |
276 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
277 | ieee80211_stop_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
278 | ra_tid->tid); | |
eadc8d9e RR |
279 | dev_kfree_skb(skb); |
280 | break; | |
281 | case IEEE80211_ADDBA_MSG: | |
282 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
283 | ieee80211_start_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
284 | ra_tid->tid); | |
eadc8d9e RR |
285 | dev_kfree_skb(skb); |
286 | break ; | |
f4ea83dd | 287 | default: |
5e3f3089 LF |
288 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
289 | skb->pkt_type); | |
f0706e82 JB |
290 | dev_kfree_skb(skb); |
291 | break; | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
f2753ddb JB |
296 | static void ieee80211_restart_work(struct work_struct *work) |
297 | { | |
298 | struct ieee80211_local *local = | |
299 | container_of(work, struct ieee80211_local, restart_work); | |
300 | ||
301 | rtnl_lock(); | |
302 | ieee80211_reconfig(local); | |
303 | rtnl_unlock(); | |
304 | } | |
305 | ||
306 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
307 | { | |
308 | struct ieee80211_local *local = hw_to_local(hw); | |
309 | ||
310 | /* use this reason, __ieee80211_resume will unblock it */ | |
311 | ieee80211_stop_queues_by_reason(hw, | |
312 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
313 | ||
314 | schedule_work(&local->restart_work); | |
315 | } | |
316 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
317 | ||
0f78231b JB |
318 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
319 | { | |
320 | struct ieee80211_local *local = | |
321 | container_of(work, struct ieee80211_local, recalc_smps); | |
322 | ||
323 | mutex_lock(&local->iflist_mtx); | |
324 | ieee80211_recalc_smps(local, NULL); | |
325 | mutex_unlock(&local->iflist_mtx); | |
326 | } | |
327 | ||
f0706e82 JB |
328 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
329 | const struct ieee80211_ops *ops) | |
330 | { | |
f0706e82 | 331 | struct ieee80211_local *local; |
96f5e66e | 332 | int priv_size, i; |
f0706e82 JB |
333 | struct wiphy *wiphy; |
334 | ||
335 | /* Ensure 32-byte alignment of our private data and hw private data. | |
336 | * We use the wiphy priv data for both our ieee80211_local and for | |
337 | * the driver's private data | |
338 | * | |
339 | * In memory it'll be like this: | |
340 | * | |
341 | * +-------------------------+ | |
342 | * | struct wiphy | | |
343 | * +-------------------------+ | |
344 | * | struct ieee80211_local | | |
345 | * +-------------------------+ | |
346 | * | driver's private data | | |
347 | * +-------------------------+ | |
348 | * | |
349 | */ | |
1ce8e7b5 | 350 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
351 | |
352 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
353 | ||
354 | if (!wiphy) | |
355 | return NULL; | |
356 | ||
9bc383de JB |
357 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
358 | WIPHY_FLAG_4ADDR_AP | | |
359 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 360 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 361 | |
00d3f14c JB |
362 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
363 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
364 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
365 | |
366 | local = wiphy_priv(wiphy); | |
de95a54b | 367 | |
f0706e82 JB |
368 | local->hw.wiphy = wiphy; |
369 | ||
1ce8e7b5 | 370 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 371 | |
4480f15c | 372 | BUG_ON(!ops->tx); |
4150c572 JB |
373 | BUG_ON(!ops->start); |
374 | BUG_ON(!ops->stop); | |
4480f15c JB |
375 | BUG_ON(!ops->config); |
376 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
377 | BUG_ON(!ops->remove_interface); |
378 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
379 | local->ops = ops; |
380 | ||
e6a9854b JB |
381 | /* set up some defaults */ |
382 | local->hw.queues = 1; | |
383 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
384 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
385 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 386 | local->user_power_level = -1; |
f0706e82 | 387 | |
79010420 | 388 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 389 | mutex_init(&local->iflist_mtx); |
f3b85252 | 390 | mutex_init(&local->scan_mtx); |
f0706e82 | 391 | |
b16bd15c | 392 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 393 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
394 | spin_lock_init(&local->queue_stop_reason_lock); |
395 | ||
c2b13452 | 396 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 397 | |
f2753ddb JB |
398 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
399 | ||
3ac64bee | 400 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
401 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
402 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 403 | |
520eb820 KV |
404 | INIT_WORK(&local->dynamic_ps_enable_work, |
405 | ieee80211_dynamic_ps_enable_work); | |
406 | INIT_WORK(&local->dynamic_ps_disable_work, | |
407 | ieee80211_dynamic_ps_disable_work); | |
408 | setup_timer(&local->dynamic_ps_timer, | |
409 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
410 | ||
f0706e82 JB |
411 | sta_info_init(local); |
412 | ||
2a577d98 JB |
413 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
414 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
415 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
416 | (unsigned long)local); | |
f0706e82 JB |
417 | |
418 | tasklet_init(&local->tasklet, | |
419 | ieee80211_tasklet_handler, | |
420 | (unsigned long) local); | |
f0706e82 JB |
421 | |
422 | skb_queue_head_init(&local->skb_queue); | |
423 | skb_queue_head_init(&local->skb_queue_unreliable); | |
424 | ||
cd8ffc80 JB |
425 | spin_lock_init(&local->ampdu_lock); |
426 | ||
f0706e82 JB |
427 | return local_to_hw(local); |
428 | } | |
429 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
430 | ||
431 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
432 | { | |
433 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 434 | int result; |
8318d78a | 435 | enum ieee80211_band band; |
de95a54b | 436 | int channels, i, j, max_bitrates; |
5ef2d41a | 437 | bool supp_ht; |
25e47c18 JB |
438 | static const u32 cipher_suites[] = { |
439 | WLAN_CIPHER_SUITE_WEP40, | |
440 | WLAN_CIPHER_SUITE_WEP104, | |
441 | WLAN_CIPHER_SUITE_TKIP, | |
442 | WLAN_CIPHER_SUITE_CCMP, | |
443 | ||
444 | /* keep last -- depends on hw flags! */ | |
445 | WLAN_CIPHER_SUITE_AES_CMAC | |
446 | }; | |
8318d78a JB |
447 | |
448 | /* | |
449 | * generic code guarantees at least one band, | |
450 | * set this very early because much code assumes | |
451 | * that hw.conf.channel is assigned | |
452 | */ | |
2a519311 | 453 | channels = 0; |
de95a54b | 454 | max_bitrates = 0; |
5ef2d41a | 455 | supp_ht = false; |
8318d78a JB |
456 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
457 | struct ieee80211_supported_band *sband; | |
458 | ||
459 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
460 | if (!sband) |
461 | continue; | |
462 | if (!local->oper_channel) { | |
8318d78a JB |
463 | /* init channel we're on */ |
464 | local->hw.conf.channel = | |
58905ca5 JB |
465 | local->oper_channel = &sband->channels[0]; |
466 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 467 | } |
de95a54b JB |
468 | channels += sband->n_channels; |
469 | ||
470 | if (max_bitrates < sband->n_bitrates) | |
471 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 472 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 473 | } |
f0706e82 | 474 | |
5ba63533 JB |
475 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
476 | sizeof(void *) * channels, GFP_KERNEL); | |
477 | if (!local->int_scan_req) | |
2a519311 JB |
478 | return -ENOMEM; |
479 | ||
f59ac048 LR |
480 | /* if low-level driver supports AP, we also support VLAN */ |
481 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
482 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
483 | ||
484 | /* mac80211 always supports monitor */ | |
485 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
486 | ||
77965c97 JB |
487 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
488 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
489 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
490 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
491 | ||
de95a54b JB |
492 | /* |
493 | * Calculate scan IE length -- we need this to alloc | |
494 | * memory and to subtract from the driver limit. It | |
495 | * includes the (extended) supported rates and HT | |
496 | * information -- SSID is the driver's responsibility. | |
497 | */ | |
498 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
499 | if (supp_ht) |
500 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
501 | |
502 | if (!local->ops->hw_scan) { | |
503 | /* For hw_scan, driver needs to set these up. */ | |
504 | local->hw.wiphy->max_scan_ssids = 4; | |
505 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
506 | } | |
507 | ||
508 | /* | |
509 | * If the driver supports any scan IEs, then assume the | |
510 | * limit includes the IEs mac80211 will add, otherwise | |
511 | * leave it at zero and let the driver sort it out; we | |
512 | * still pass our IEs to the driver but userspace will | |
513 | * not be allowed to in that case. | |
514 | */ | |
515 | if (local->hw.wiphy->max_scan_ie_len) | |
516 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
517 | ||
25e47c18 JB |
518 | local->hw.wiphy->cipher_suites = cipher_suites; |
519 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
520 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
521 | local->hw.wiphy->n_cipher_suites--; | |
522 | ||
f0706e82 JB |
523 | result = wiphy_register(local->hw.wiphy); |
524 | if (result < 0) | |
2a519311 | 525 | goto fail_wiphy_register; |
f0706e82 | 526 | |
e2530083 JB |
527 | /* |
528 | * We use the number of queues for feature tests (QoS, HT) internally | |
529 | * so restrict them appropriately. | |
530 | */ | |
e2530083 JB |
531 | if (hw->queues > IEEE80211_MAX_QUEUES) |
532 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 533 | |
42935eca | 534 | local->workqueue = |
30d3ef41 | 535 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 536 | if (!local->workqueue) { |
f0706e82 JB |
537 | result = -ENOMEM; |
538 | goto fail_workqueue; | |
539 | } | |
540 | ||
b306f453 JB |
541 | /* |
542 | * The hardware needs headroom for sending the frame, | |
543 | * and we need some headroom for passing the frame to monitor | |
544 | * interfaces, but never both at the same time. | |
545 | */ | |
d24deb25 GW |
546 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
547 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
548 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
549 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 550 | |
e9f207f0 JB |
551 | debugfs_hw_add(local); |
552 | ||
ea95bba4 TW |
553 | if (local->hw.max_listen_interval == 0) |
554 | local->hw.max_listen_interval = 1; | |
555 | ||
556 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
557 | ||
f0706e82 JB |
558 | result = sta_info_start(local); |
559 | if (result < 0) | |
560 | goto fail_sta_info; | |
561 | ||
d4c4a9a1 AJ |
562 | result = ieee80211_wep_init(local); |
563 | if (result < 0) { | |
564 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
565 | wiphy_name(local->hw.wiphy), result); | |
566 | goto fail_wep; | |
567 | } | |
568 | ||
f0706e82 | 569 | rtnl_lock(); |
f0706e82 | 570 | |
830f9038 JB |
571 | result = ieee80211_init_rate_ctrl_alg(local, |
572 | hw->rate_control_algorithm); | |
f0706e82 JB |
573 | if (result < 0) { |
574 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 575 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
576 | goto fail_rate; |
577 | } | |
578 | ||
8dffff21 JB |
579 | /* add one default STA interface if supported */ |
580 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
581 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
582 | NL80211_IFTYPE_STATION, NULL); | |
583 | if (result) | |
584 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
585 | wiphy_name(local->hw.wiphy)); | |
586 | } | |
f0706e82 | 587 | |
f0706e82 JB |
588 | rtnl_unlock(); |
589 | ||
590 | ieee80211_led_init(local); | |
591 | ||
2a519311 JB |
592 | /* alloc internal scan request */ |
593 | i = 0; | |
5ba63533 JB |
594 | local->int_scan_req->ssids = &local->scan_ssid; |
595 | local->int_scan_req->n_ssids = 1; | |
2a519311 JB |
596 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
597 | if (!hw->wiphy->bands[band]) | |
598 | continue; | |
599 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
5ba63533 | 600 | local->int_scan_req->channels[i] = |
2a519311 JB |
601 | &hw->wiphy->bands[band]->channels[j]; |
602 | i++; | |
603 | } | |
604 | } | |
c327d967 | 605 | local->int_scan_req->n_channels = i; |
2a519311 | 606 | |
10f644a4 JB |
607 | local->network_latency_notifier.notifier_call = |
608 | ieee80211_max_network_latency; | |
609 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
610 | &local->network_latency_notifier); | |
611 | ||
612 | if (result) { | |
613 | rtnl_lock(); | |
614 | goto fail_pm_qos; | |
615 | } | |
616 | ||
f0706e82 JB |
617 | return 0; |
618 | ||
10f644a4 JB |
619 | fail_pm_qos: |
620 | ieee80211_led_exit(local); | |
621 | ieee80211_remove_interfaces(local); | |
10f644a4 | 622 | fail_rate: |
f0706e82 | 623 | rtnl_unlock(); |
d4c4a9a1 | 624 | ieee80211_wep_free(local); |
aba74530 | 625 | fail_wep: |
f0706e82 | 626 | sta_info_stop(local); |
10f644a4 | 627 | fail_sta_info: |
42935eca | 628 | destroy_workqueue(local->workqueue); |
10f644a4 | 629 | fail_workqueue: |
f0706e82 | 630 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 631 | fail_wiphy_register: |
11ba964d | 632 | kfree(local->int_scan_req); |
f0706e82 JB |
633 | return result; |
634 | } | |
635 | EXPORT_SYMBOL(ieee80211_register_hw); | |
636 | ||
f0706e82 JB |
637 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
638 | { | |
639 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
640 | |
641 | tasklet_kill(&local->tx_pending_tasklet); | |
642 | tasklet_kill(&local->tasklet); | |
643 | ||
10f644a4 JB |
644 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
645 | &local->network_latency_notifier); | |
646 | ||
f0706e82 JB |
647 | rtnl_lock(); |
648 | ||
79010420 JB |
649 | /* |
650 | * At this point, interface list manipulations are fine | |
651 | * because the driver cannot be handing us frames any | |
652 | * more and the tasklet is killed. | |
653 | */ | |
75636525 | 654 | ieee80211_remove_interfaces(local); |
5b2812e9 | 655 | |
f0706e82 JB |
656 | rtnl_unlock(); |
657 | ||
3ac64bee JB |
658 | cancel_work_sync(&local->reconfig_filter); |
659 | ||
f0706e82 JB |
660 | ieee80211_clear_tx_pending(local); |
661 | sta_info_stop(local); | |
662 | rate_control_deinitialize(local); | |
663 | ||
f64f9e71 JP |
664 | if (skb_queue_len(&local->skb_queue) || |
665 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 666 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 667 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
668 | skb_queue_purge(&local->skb_queue); |
669 | skb_queue_purge(&local->skb_queue_unreliable); | |
670 | ||
42935eca | 671 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
672 | wiphy_unregister(local->hw.wiphy); |
673 | ieee80211_wep_free(local); | |
674 | ieee80211_led_exit(local); | |
5ba63533 | 675 | kfree(local->int_scan_req); |
f0706e82 JB |
676 | } |
677 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
678 | ||
679 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
680 | { | |
681 | struct ieee80211_local *local = hw_to_local(hw); | |
682 | ||
c771c9d8 | 683 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 684 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 685 | |
f0706e82 JB |
686 | wiphy_free(local->hw.wiphy); |
687 | } | |
688 | EXPORT_SYMBOL(ieee80211_free_hw); | |
689 | ||
f0706e82 JB |
690 | static int __init ieee80211_init(void) |
691 | { | |
692 | struct sk_buff *skb; | |
693 | int ret; | |
694 | ||
e039fa4a JB |
695 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
696 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 697 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 698 | |
cccf129f FF |
699 | ret = rc80211_minstrel_init(); |
700 | if (ret) | |
701 | return ret; | |
702 | ||
4b475898 | 703 | ret = rc80211_pid_init(); |
ad018375 | 704 | if (ret) |
47846c9b | 705 | goto err_pid; |
f0706e82 | 706 | |
47846c9b JB |
707 | ret = ieee80211_iface_init(); |
708 | if (ret) | |
709 | goto err_netdev; | |
e9f207f0 | 710 | |
f0706e82 | 711 | return 0; |
47846c9b JB |
712 | err_netdev: |
713 | rc80211_pid_exit(); | |
714 | err_pid: | |
715 | rc80211_minstrel_exit(); | |
716 | ||
717 | return ret; | |
f0706e82 JB |
718 | } |
719 | ||
f0706e82 JB |
720 | static void __exit ieee80211_exit(void) |
721 | { | |
4b475898 | 722 | rc80211_pid_exit(); |
cccf129f | 723 | rc80211_minstrel_exit(); |
ac71c691 | 724 | |
3b96766f JB |
725 | /* |
726 | * For key todo, it'll be empty by now but the work | |
727 | * might still be scheduled. | |
728 | */ | |
729 | flush_scheduled_work(); | |
730 | ||
f7a92144 LCC |
731 | if (mesh_allocated) |
732 | ieee80211s_stop(); | |
902acc78 | 733 | |
47846c9b | 734 | ieee80211_iface_exit(); |
f0706e82 JB |
735 | } |
736 | ||
737 | ||
ca9938fe | 738 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
739 | module_exit(ieee80211_exit); |
740 | ||
741 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
742 | MODULE_LICENSE("GPL"); |