Commit | Line | Data |
---|---|---|
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 JB |
34 | #include "debugfs.h" |
35 | #include "debugfs_netdev.h" | |
f0706e82 | 36 | |
0d143fe1 | 37 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 38 | { |
3ac64bee | 39 | u64 mc; |
4150c572 JB |
40 | unsigned int changed_flags; |
41 | unsigned int new_flags = 0; | |
42 | ||
53918994 | 43 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
44 | new_flags |= FIF_PROMISC_IN_BSS; |
45 | ||
53918994 | 46 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
47 | new_flags |= FIF_ALLMULTI; |
48 | ||
3ac64bee | 49 | if (local->monitors || local->scanning) |
8cc9a739 MW |
50 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
51 | ||
52 | if (local->fif_fcsfail) | |
53 | new_flags |= FIF_FCSFAIL; | |
54 | ||
55 | if (local->fif_plcpfail) | |
56 | new_flags |= FIF_PLCPFAIL; | |
57 | ||
58 | if (local->fif_control) | |
59 | new_flags |= FIF_CONTROL; | |
60 | ||
61 | if (local->fif_other_bss) | |
62 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 63 | |
e3b90ca2 IP |
64 | if (local->fif_pspoll) |
65 | new_flags |= FIF_PSPOLL; | |
66 | ||
3ac64bee | 67 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
68 | changed_flags = local->filter_flags ^ new_flags; |
69 | ||
3ac64bee JB |
70 | mc = drv_prepare_multicast(local, local->mc_count, local->mc_list); |
71 | spin_unlock_bh(&local->filter_lock); | |
72 | ||
4150c572 JB |
73 | /* be a bit nasty */ |
74 | new_flags |= (1<<31); | |
75 | ||
3ac64bee | 76 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
77 | |
78 | WARN_ON(new_flags & (1<<31)); | |
79 | ||
80 | local->filter_flags = new_flags & ~(1<<31); | |
81 | } | |
82 | ||
3ac64bee JB |
83 | static void ieee80211_reconfig_filter(struct work_struct *work) |
84 | { | |
85 | struct ieee80211_local *local = | |
86 | container_of(work, struct ieee80211_local, reconfig_filter); | |
87 | ||
88 | ieee80211_configure_filter(local); | |
89 | } | |
90 | ||
e8975581 | 91 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 92 | { |
58905ca5 | 93 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 94 | int ret = 0; |
e8975581 | 95 | int power; |
094d05dc | 96 | enum nl80211_channel_type channel_type; |
f0706e82 | 97 | |
cb121bad JB |
98 | might_sleep(); |
99 | ||
58905ca5 JB |
100 | scan_chan = local->scan_channel; |
101 | ||
102 | if (scan_chan) { | |
103 | chan = scan_chan; | |
094d05dc | 104 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 105 | } else { |
b2c258fb | 106 | chan = local->oper_channel; |
094d05dc | 107 | channel_type = local->oper_channel_type; |
72bdcf34 | 108 | } |
f0706e82 | 109 | |
72bdcf34 | 110 | if (chan != local->hw.conf.channel || |
4797938c | 111 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 112 | local->hw.conf.channel = chan; |
4797938c | 113 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
114 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
115 | } | |
8318d78a | 116 | |
58905ca5 | 117 | if (scan_chan) |
e8975581 | 118 | power = chan->max_power; |
8318d78a | 119 | else |
a8302de9 VT |
120 | power = local->power_constr_level ? |
121 | (chan->max_power - local->power_constr_level) : | |
122 | chan->max_power; | |
123 | ||
47afbaf5 | 124 | if (local->user_power_level >= 0) |
a8302de9 VT |
125 | power = min(power, local->user_power_level); |
126 | ||
e8975581 JB |
127 | if (local->hw.conf.power_level != power) { |
128 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
129 | local->hw.conf.power_level = power; | |
130 | } | |
b2c258fb | 131 | |
e8975581 | 132 | if (changed && local->open_count) { |
24487981 | 133 | ret = drv_config(local, changed); |
d73782fd | 134 | /* |
447107fb | 135 | * Goal: |
d73782fd JB |
136 | * HW reconfiguration should never fail, the driver has told |
137 | * us what it can support so it should live up to that promise. | |
447107fb RC |
138 | * |
139 | * Current status: | |
140 | * rfkill is not integrated with mac80211 and a | |
141 | * configuration command can thus fail if hardware rfkill | |
142 | * is enabled | |
143 | * | |
144 | * FIXME: integrate rfkill with mac80211 and then add this | |
145 | * WARN_ON() back | |
146 | * | |
d73782fd | 147 | */ |
447107fb | 148 | /* WARN_ON(ret); */ |
d73782fd | 149 | } |
f0706e82 | 150 | |
b2c258fb JB |
151 | return ret; |
152 | } | |
f0706e82 | 153 | |
471b3efd JB |
154 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
155 | u32 changed) | |
d9430a32 | 156 | { |
471b3efd | 157 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 158 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
159 | |
160 | if (!changed) | |
161 | return; | |
162 | ||
9cef8737 JB |
163 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
164 | /* | |
165 | * While not associated, claim a BSSID of all-zeroes | |
166 | * so that drivers don't do any weird things with the | |
167 | * BSSID at that time. | |
168 | */ | |
169 | if (sdata->vif.bss_conf.assoc) | |
170 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
171 | else | |
172 | sdata->vif.bss_conf.bssid = zero; | |
173 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
174 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
175 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
176 | sdata->vif.bss_conf.bssid = sdata->dev->dev_addr; | |
177 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { | |
2d0ddec5 JB |
178 | sdata->vif.bss_conf.bssid = zero; |
179 | } else { | |
180 | WARN_ON(1); | |
181 | return; | |
182 | } | |
183 | ||
184 | switch (sdata->vif.type) { | |
185 | case NL80211_IFTYPE_AP: | |
186 | case NL80211_IFTYPE_ADHOC: | |
187 | case NL80211_IFTYPE_MESH_POINT: | |
188 | break; | |
189 | default: | |
190 | /* do not warn to simplify caller in scan.c */ | |
191 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
192 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
193 | return; | |
194 | break; | |
195 | } | |
196 | ||
197 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
97af7432 BC |
198 | if (local->quiescing || !netif_running(sdata->dev) || |
199 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { | |
2d0ddec5 JB |
200 | sdata->vif.bss_conf.enable_beacon = false; |
201 | } else { | |
202 | /* | |
203 | * Beacon should be enabled, but AP mode must | |
204 | * check whether there is a beacon configured. | |
205 | */ | |
206 | switch (sdata->vif.type) { | |
207 | case NL80211_IFTYPE_AP: | |
208 | sdata->vif.bss_conf.enable_beacon = | |
209 | !!rcu_dereference(sdata->u.ap.beacon); | |
210 | break; | |
211 | case NL80211_IFTYPE_ADHOC: | |
212 | sdata->vif.bss_conf.enable_beacon = | |
213 | !!rcu_dereference(sdata->u.ibss.presp); | |
214 | break; | |
215 | case NL80211_IFTYPE_MESH_POINT: | |
216 | sdata->vif.bss_conf.enable_beacon = true; | |
217 | break; | |
218 | default: | |
219 | /* not reached */ | |
220 | WARN_ON(1); | |
221 | break; | |
222 | } | |
223 | } | |
224 | } | |
225 | ||
24487981 JB |
226 | drv_bss_info_changed(local, &sdata->vif, |
227 | &sdata->vif.bss_conf, changed); | |
d9430a32 DD |
228 | } |
229 | ||
f698d856 | 230 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 231 | { |
bda3933a JB |
232 | sdata->vif.bss_conf.use_cts_prot = false; |
233 | sdata->vif.bss_conf.use_short_preamble = false; | |
234 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
235 | return BSS_CHANGED_ERP_CTS_PROT | |
236 | BSS_CHANGED_ERP_PREAMBLE | | |
237 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
238 | } |
239 | ||
f0706e82 JB |
240 | static void ieee80211_tasklet_handler(unsigned long data) |
241 | { | |
242 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
243 | struct sk_buff *skb; | |
eadc8d9e | 244 | struct ieee80211_ra_tid *ra_tid; |
f0706e82 JB |
245 | |
246 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
247 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
248 | switch (skb->pkt_type) { | |
249 | case IEEE80211_RX_MSG: | |
51fb61e7 | 250 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
251 | * netstack. */ |
252 | skb->pkt_type = 0; | |
f1d58c25 | 253 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
254 | break; |
255 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 256 | skb->pkt_type = 0; |
e039fa4a | 257 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 258 | break; |
eadc8d9e RR |
259 | case IEEE80211_DELBA_MSG: |
260 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
261 | ieee80211_stop_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
262 | ra_tid->tid); | |
eadc8d9e RR |
263 | dev_kfree_skb(skb); |
264 | break; | |
265 | case IEEE80211_ADDBA_MSG: | |
266 | ra_tid = (struct ieee80211_ra_tid *) &skb->cb; | |
c951ad35 JB |
267 | ieee80211_start_tx_ba_cb(ra_tid->vif, ra_tid->ra, |
268 | ra_tid->tid); | |
eadc8d9e RR |
269 | dev_kfree_skb(skb); |
270 | break ; | |
f4ea83dd | 271 | default: |
5e3f3089 LF |
272 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
273 | skb->pkt_type); | |
f0706e82 JB |
274 | dev_kfree_skb(skb); |
275 | break; | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
f2753ddb JB |
280 | static void ieee80211_restart_work(struct work_struct *work) |
281 | { | |
282 | struct ieee80211_local *local = | |
283 | container_of(work, struct ieee80211_local, restart_work); | |
284 | ||
285 | rtnl_lock(); | |
286 | ieee80211_reconfig(local); | |
287 | rtnl_unlock(); | |
288 | } | |
289 | ||
290 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
291 | { | |
292 | struct ieee80211_local *local = hw_to_local(hw); | |
293 | ||
294 | /* use this reason, __ieee80211_resume will unblock it */ | |
295 | ieee80211_stop_queues_by_reason(hw, | |
296 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
297 | ||
298 | schedule_work(&local->restart_work); | |
299 | } | |
300 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
301 | ||
f0706e82 JB |
302 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
303 | const struct ieee80211_ops *ops) | |
304 | { | |
f0706e82 | 305 | struct ieee80211_local *local; |
96f5e66e | 306 | int priv_size, i; |
f0706e82 JB |
307 | struct wiphy *wiphy; |
308 | ||
309 | /* Ensure 32-byte alignment of our private data and hw private data. | |
310 | * We use the wiphy priv data for both our ieee80211_local and for | |
311 | * the driver's private data | |
312 | * | |
313 | * In memory it'll be like this: | |
314 | * | |
315 | * +-------------------------+ | |
316 | * | struct wiphy | | |
317 | * +-------------------------+ | |
318 | * | struct ieee80211_local | | |
319 | * +-------------------------+ | |
320 | * | driver's private data | | |
321 | * +-------------------------+ | |
322 | * | |
323 | */ | |
1ce8e7b5 | 324 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
325 | |
326 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
327 | ||
328 | if (!wiphy) | |
329 | return NULL; | |
330 | ||
9bc383de JB |
331 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
332 | WIPHY_FLAG_4ADDR_AP | | |
333 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 334 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 335 | |
00d3f14c JB |
336 | /* Yes, putting cfg80211_bss into ieee80211_bss is a hack */ |
337 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss) - | |
338 | sizeof(struct cfg80211_bss); | |
f0706e82 JB |
339 | |
340 | local = wiphy_priv(wiphy); | |
de95a54b | 341 | |
f0706e82 JB |
342 | local->hw.wiphy = wiphy; |
343 | ||
1ce8e7b5 | 344 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 345 | |
4480f15c | 346 | BUG_ON(!ops->tx); |
4150c572 JB |
347 | BUG_ON(!ops->start); |
348 | BUG_ON(!ops->stop); | |
4480f15c JB |
349 | BUG_ON(!ops->config); |
350 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
351 | BUG_ON(!ops->remove_interface); |
352 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
353 | local->ops = ops; |
354 | ||
e6a9854b JB |
355 | /* set up some defaults */ |
356 | local->hw.queues = 1; | |
357 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
358 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
359 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 360 | local->user_power_level = -1; |
f0706e82 | 361 | |
79010420 | 362 | INIT_LIST_HEAD(&local->interfaces); |
c771c9d8 | 363 | mutex_init(&local->iflist_mtx); |
f3b85252 | 364 | mutex_init(&local->scan_mtx); |
f0706e82 | 365 | |
b16bd15c | 366 | spin_lock_init(&local->key_lock); |
3b8d81e0 | 367 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
368 | spin_lock_init(&local->queue_stop_reason_lock); |
369 | ||
c2b13452 | 370 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 371 | |
f2753ddb JB |
372 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
373 | ||
3ac64bee JB |
374 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
375 | ||
520eb820 KV |
376 | INIT_WORK(&local->dynamic_ps_enable_work, |
377 | ieee80211_dynamic_ps_enable_work); | |
378 | INIT_WORK(&local->dynamic_ps_disable_work, | |
379 | ieee80211_dynamic_ps_disable_work); | |
380 | setup_timer(&local->dynamic_ps_timer, | |
381 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
382 | ||
f0706e82 JB |
383 | sta_info_init(local); |
384 | ||
2a577d98 JB |
385 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) |
386 | skb_queue_head_init(&local->pending[i]); | |
f0706e82 JB |
387 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
388 | (unsigned long)local); | |
f0706e82 JB |
389 | |
390 | tasklet_init(&local->tasklet, | |
391 | ieee80211_tasklet_handler, | |
392 | (unsigned long) local); | |
f0706e82 JB |
393 | |
394 | skb_queue_head_init(&local->skb_queue); | |
395 | skb_queue_head_init(&local->skb_queue_unreliable); | |
396 | ||
cd8ffc80 JB |
397 | spin_lock_init(&local->ampdu_lock); |
398 | ||
f0706e82 JB |
399 | return local_to_hw(local); |
400 | } | |
401 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
402 | ||
403 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
404 | { | |
405 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 406 | int result; |
8318d78a | 407 | enum ieee80211_band band; |
de95a54b | 408 | int channels, i, j, max_bitrates; |
5ef2d41a | 409 | bool supp_ht; |
25e47c18 JB |
410 | static const u32 cipher_suites[] = { |
411 | WLAN_CIPHER_SUITE_WEP40, | |
412 | WLAN_CIPHER_SUITE_WEP104, | |
413 | WLAN_CIPHER_SUITE_TKIP, | |
414 | WLAN_CIPHER_SUITE_CCMP, | |
415 | ||
416 | /* keep last -- depends on hw flags! */ | |
417 | WLAN_CIPHER_SUITE_AES_CMAC | |
418 | }; | |
8318d78a JB |
419 | |
420 | /* | |
421 | * generic code guarantees at least one band, | |
422 | * set this very early because much code assumes | |
423 | * that hw.conf.channel is assigned | |
424 | */ | |
2a519311 | 425 | channels = 0; |
de95a54b | 426 | max_bitrates = 0; |
5ef2d41a | 427 | supp_ht = false; |
8318d78a JB |
428 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
429 | struct ieee80211_supported_band *sband; | |
430 | ||
431 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
432 | if (!sband) |
433 | continue; | |
434 | if (!local->oper_channel) { | |
8318d78a JB |
435 | /* init channel we're on */ |
436 | local->hw.conf.channel = | |
58905ca5 JB |
437 | local->oper_channel = &sband->channels[0]; |
438 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 439 | } |
de95a54b JB |
440 | channels += sband->n_channels; |
441 | ||
442 | if (max_bitrates < sband->n_bitrates) | |
443 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 444 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 445 | } |
f0706e82 | 446 | |
5ba63533 JB |
447 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
448 | sizeof(void *) * channels, GFP_KERNEL); | |
449 | if (!local->int_scan_req) | |
2a519311 JB |
450 | return -ENOMEM; |
451 | ||
f59ac048 LR |
452 | /* if low-level driver supports AP, we also support VLAN */ |
453 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
454 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
455 | ||
456 | /* mac80211 always supports monitor */ | |
457 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
458 | ||
77965c97 JB |
459 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
460 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
461 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
462 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
463 | ||
de95a54b JB |
464 | /* |
465 | * Calculate scan IE length -- we need this to alloc | |
466 | * memory and to subtract from the driver limit. It | |
467 | * includes the (extended) supported rates and HT | |
468 | * information -- SSID is the driver's responsibility. | |
469 | */ | |
470 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
471 | if (supp_ht) |
472 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
473 | |
474 | if (!local->ops->hw_scan) { | |
475 | /* For hw_scan, driver needs to set these up. */ | |
476 | local->hw.wiphy->max_scan_ssids = 4; | |
477 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
478 | } | |
479 | ||
480 | /* | |
481 | * If the driver supports any scan IEs, then assume the | |
482 | * limit includes the IEs mac80211 will add, otherwise | |
483 | * leave it at zero and let the driver sort it out; we | |
484 | * still pass our IEs to the driver but userspace will | |
485 | * not be allowed to in that case. | |
486 | */ | |
487 | if (local->hw.wiphy->max_scan_ie_len) | |
488 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
489 | ||
25e47c18 JB |
490 | local->hw.wiphy->cipher_suites = cipher_suites; |
491 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
492 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
493 | local->hw.wiphy->n_cipher_suites--; | |
494 | ||
f0706e82 JB |
495 | result = wiphy_register(local->hw.wiphy); |
496 | if (result < 0) | |
2a519311 | 497 | goto fail_wiphy_register; |
f0706e82 | 498 | |
e2530083 JB |
499 | /* |
500 | * We use the number of queues for feature tests (QoS, HT) internally | |
501 | * so restrict them appropriately. | |
502 | */ | |
e2530083 JB |
503 | if (hw->queues > IEEE80211_MAX_QUEUES) |
504 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 505 | |
42935eca | 506 | local->workqueue = |
30d3ef41 | 507 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 508 | if (!local->workqueue) { |
f0706e82 JB |
509 | result = -ENOMEM; |
510 | goto fail_workqueue; | |
511 | } | |
512 | ||
b306f453 JB |
513 | /* |
514 | * The hardware needs headroom for sending the frame, | |
515 | * and we need some headroom for passing the frame to monitor | |
516 | * interfaces, but never both at the same time. | |
517 | */ | |
d24deb25 GW |
518 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
519 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
520 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
521 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 522 | |
e9f207f0 JB |
523 | debugfs_hw_add(local); |
524 | ||
ea95bba4 TW |
525 | if (local->hw.max_listen_interval == 0) |
526 | local->hw.max_listen_interval = 1; | |
527 | ||
528 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
529 | ||
f0706e82 JB |
530 | result = sta_info_start(local); |
531 | if (result < 0) | |
532 | goto fail_sta_info; | |
533 | ||
d4c4a9a1 AJ |
534 | result = ieee80211_wep_init(local); |
535 | if (result < 0) { | |
536 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
537 | wiphy_name(local->hw.wiphy), result); | |
538 | goto fail_wep; | |
539 | } | |
540 | ||
f0706e82 | 541 | rtnl_lock(); |
f0706e82 | 542 | |
830f9038 JB |
543 | result = ieee80211_init_rate_ctrl_alg(local, |
544 | hw->rate_control_algorithm); | |
f0706e82 JB |
545 | if (result < 0) { |
546 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 547 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
548 | goto fail_rate; |
549 | } | |
550 | ||
8dffff21 JB |
551 | /* add one default STA interface if supported */ |
552 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
553 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
554 | NL80211_IFTYPE_STATION, NULL); | |
555 | if (result) | |
556 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
557 | wiphy_name(local->hw.wiphy)); | |
558 | } | |
f0706e82 | 559 | |
f0706e82 JB |
560 | rtnl_unlock(); |
561 | ||
562 | ieee80211_led_init(local); | |
563 | ||
2a519311 JB |
564 | /* alloc internal scan request */ |
565 | i = 0; | |
5ba63533 JB |
566 | local->int_scan_req->ssids = &local->scan_ssid; |
567 | local->int_scan_req->n_ssids = 1; | |
2a519311 JB |
568 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
569 | if (!hw->wiphy->bands[band]) | |
570 | continue; | |
571 | for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) { | |
5ba63533 | 572 | local->int_scan_req->channels[i] = |
2a519311 JB |
573 | &hw->wiphy->bands[band]->channels[j]; |
574 | i++; | |
575 | } | |
576 | } | |
c327d967 | 577 | local->int_scan_req->n_channels = i; |
2a519311 | 578 | |
10f644a4 JB |
579 | local->network_latency_notifier.notifier_call = |
580 | ieee80211_max_network_latency; | |
581 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
582 | &local->network_latency_notifier); | |
583 | ||
584 | if (result) { | |
585 | rtnl_lock(); | |
586 | goto fail_pm_qos; | |
587 | } | |
588 | ||
f0706e82 JB |
589 | return 0; |
590 | ||
10f644a4 JB |
591 | fail_pm_qos: |
592 | ieee80211_led_exit(local); | |
593 | ieee80211_remove_interfaces(local); | |
10f644a4 | 594 | fail_rate: |
f0706e82 | 595 | rtnl_unlock(); |
d4c4a9a1 | 596 | ieee80211_wep_free(local); |
aba74530 | 597 | fail_wep: |
f0706e82 | 598 | sta_info_stop(local); |
10f644a4 | 599 | fail_sta_info: |
42935eca | 600 | destroy_workqueue(local->workqueue); |
10f644a4 | 601 | fail_workqueue: |
f0706e82 | 602 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 603 | fail_wiphy_register: |
11ba964d | 604 | kfree(local->int_scan_req); |
f0706e82 JB |
605 | return result; |
606 | } | |
607 | EXPORT_SYMBOL(ieee80211_register_hw); | |
608 | ||
f0706e82 JB |
609 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
610 | { | |
611 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
612 | |
613 | tasklet_kill(&local->tx_pending_tasklet); | |
614 | tasklet_kill(&local->tasklet); | |
615 | ||
10f644a4 JB |
616 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
617 | &local->network_latency_notifier); | |
618 | ||
f0706e82 JB |
619 | rtnl_lock(); |
620 | ||
79010420 JB |
621 | /* |
622 | * At this point, interface list manipulations are fine | |
623 | * because the driver cannot be handing us frames any | |
624 | * more and the tasklet is killed. | |
625 | */ | |
75636525 | 626 | ieee80211_remove_interfaces(local); |
5b2812e9 | 627 | |
f0706e82 JB |
628 | rtnl_unlock(); |
629 | ||
3ac64bee JB |
630 | cancel_work_sync(&local->reconfig_filter); |
631 | ||
f0706e82 JB |
632 | ieee80211_clear_tx_pending(local); |
633 | sta_info_stop(local); | |
634 | rate_control_deinitialize(local); | |
635 | ||
f64f9e71 JP |
636 | if (skb_queue_len(&local->skb_queue) || |
637 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 638 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 639 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
640 | skb_queue_purge(&local->skb_queue); |
641 | skb_queue_purge(&local->skb_queue_unreliable); | |
642 | ||
42935eca | 643 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
644 | wiphy_unregister(local->hw.wiphy); |
645 | ieee80211_wep_free(local); | |
646 | ieee80211_led_exit(local); | |
5ba63533 | 647 | kfree(local->int_scan_req); |
f0706e82 JB |
648 | } |
649 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
650 | ||
651 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
652 | { | |
653 | struct ieee80211_local *local = hw_to_local(hw); | |
654 | ||
c771c9d8 | 655 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 656 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 657 | |
f0706e82 JB |
658 | wiphy_free(local->hw.wiphy); |
659 | } | |
660 | EXPORT_SYMBOL(ieee80211_free_hw); | |
661 | ||
f0706e82 JB |
662 | static int __init ieee80211_init(void) |
663 | { | |
664 | struct sk_buff *skb; | |
665 | int ret; | |
666 | ||
e039fa4a JB |
667 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
668 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 669 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 670 | |
cccf129f FF |
671 | ret = rc80211_minstrel_init(); |
672 | if (ret) | |
673 | return ret; | |
674 | ||
4b475898 | 675 | ret = rc80211_pid_init(); |
ad018375 | 676 | if (ret) |
51cb6db0 | 677 | return ret; |
f0706e82 | 678 | |
e9f207f0 JB |
679 | ieee80211_debugfs_netdev_init(); |
680 | ||
f0706e82 JB |
681 | return 0; |
682 | } | |
683 | ||
f0706e82 JB |
684 | static void __exit ieee80211_exit(void) |
685 | { | |
4b475898 | 686 | rc80211_pid_exit(); |
cccf129f | 687 | rc80211_minstrel_exit(); |
ac71c691 | 688 | |
3b96766f JB |
689 | /* |
690 | * For key todo, it'll be empty by now but the work | |
691 | * might still be scheduled. | |
692 | */ | |
693 | flush_scheduled_work(); | |
694 | ||
f7a92144 LCC |
695 | if (mesh_allocated) |
696 | ieee80211s_stop(); | |
902acc78 | 697 | |
e9f207f0 | 698 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
699 | } |
700 | ||
701 | ||
ca9938fe | 702 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
703 | module_exit(ieee80211_exit); |
704 | ||
705 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
706 | MODULE_LICENSE("GPL"); |