Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
f0706e82 JB |
12 | #include <linux/module.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/etherdevice.h> | |
19 | #include <linux/if_arp.h> | |
f0706e82 | 20 | #include <linux/rtnetlink.h> |
f0706e82 | 21 | #include <linux/bitmap.h> |
10f644a4 | 22 | #include <linux/pm_qos_params.h> |
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 | ||
22bedad3 | 74 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
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; |
0aaffa9b | 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; | |
f0706e82 JB |
262 | |
263 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
264 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
265 | switch (skb->pkt_type) { | |
266 | case IEEE80211_RX_MSG: | |
51fb61e7 | 267 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
268 | * netstack. */ |
269 | skb->pkt_type = 0; | |
f1d58c25 | 270 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
271 | break; |
272 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 273 | skb->pkt_type = 0; |
e039fa4a | 274 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 275 | break; |
f4ea83dd | 276 | default: |
5e3f3089 LF |
277 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
278 | skb->pkt_type); | |
f0706e82 JB |
279 | dev_kfree_skb(skb); |
280 | break; | |
281 | } | |
282 | } | |
283 | } | |
284 | ||
f2753ddb JB |
285 | static void ieee80211_restart_work(struct work_struct *work) |
286 | { | |
287 | struct ieee80211_local *local = | |
288 | container_of(work, struct ieee80211_local, restart_work); | |
289 | ||
290 | rtnl_lock(); | |
291 | ieee80211_reconfig(local); | |
292 | rtnl_unlock(); | |
293 | } | |
294 | ||
295 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
296 | { | |
297 | struct ieee80211_local *local = hw_to_local(hw); | |
298 | ||
b5878a2d JB |
299 | trace_api_restart_hw(local); |
300 | ||
f2753ddb JB |
301 | /* use this reason, __ieee80211_resume will unblock it */ |
302 | ieee80211_stop_queues_by_reason(hw, | |
303 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
304 | ||
305 | schedule_work(&local->restart_work); | |
306 | } | |
307 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
308 | ||
0f78231b JB |
309 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
310 | { | |
311 | struct ieee80211_local *local = | |
312 | container_of(work, struct ieee80211_local, recalc_smps); | |
313 | ||
314 | mutex_lock(&local->iflist_mtx); | |
315 | ieee80211_recalc_smps(local, NULL); | |
316 | mutex_unlock(&local->iflist_mtx); | |
317 | } | |
318 | ||
26b36cfe | 319 | #ifdef CONFIG_INET |
2b2c009e JO |
320 | int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata) |
321 | { | |
322 | struct in_device *idev; | |
323 | int ret = 0; | |
324 | ||
325 | BUG_ON(!sdata); | |
326 | ASSERT_RTNL(); | |
327 | ||
328 | idev = sdata->dev->ip_ptr; | |
329 | if (!idev) | |
330 | return 0; | |
331 | ||
332 | ret = drv_configure_arp_filter(sdata->local, &sdata->vif, | |
333 | idev->ifa_list); | |
334 | return ret; | |
335 | } | |
336 | ||
337 | static int ieee80211_ifa_changed(struct notifier_block *nb, | |
338 | unsigned long data, void *arg) | |
339 | { | |
340 | struct in_ifaddr *ifa = arg; | |
341 | struct ieee80211_local *local = | |
342 | container_of(nb, struct ieee80211_local, | |
343 | ifa_notifier); | |
344 | struct net_device *ndev = ifa->ifa_dev->dev; | |
345 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
346 | struct ieee80211_sub_if_data *sdata; | |
347 | struct ieee80211_if_managed *ifmgd; | |
348 | ||
90b72609 JO |
349 | if (!netif_running(ndev)) |
350 | return NOTIFY_DONE; | |
351 | ||
2b2c009e JO |
352 | /* Make sure it's our interface that got changed */ |
353 | if (!wdev) | |
354 | return NOTIFY_DONE; | |
355 | ||
356 | if (wdev->wiphy != local->hw.wiphy) | |
357 | return NOTIFY_DONE; | |
358 | ||
359 | /* We are concerned about IP addresses only when associated */ | |
360 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
361 | ||
362 | /* ARP filtering is only supported in managed mode */ | |
363 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
364 | return NOTIFY_DONE; | |
365 | ||
366 | ifmgd = &sdata->u.mgd; | |
367 | mutex_lock(&ifmgd->mtx); | |
368 | if (ifmgd->associated) | |
369 | ieee80211_set_arp_filter(sdata); | |
370 | mutex_unlock(&ifmgd->mtx); | |
371 | ||
372 | return NOTIFY_DONE; | |
373 | } | |
26b36cfe | 374 | #endif |
2b2c009e | 375 | |
f0706e82 JB |
376 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
377 | const struct ieee80211_ops *ops) | |
378 | { | |
f0706e82 | 379 | struct ieee80211_local *local; |
96f5e66e | 380 | int priv_size, i; |
f0706e82 JB |
381 | struct wiphy *wiphy; |
382 | ||
383 | /* Ensure 32-byte alignment of our private data and hw private data. | |
384 | * We use the wiphy priv data for both our ieee80211_local and for | |
385 | * the driver's private data | |
386 | * | |
387 | * In memory it'll be like this: | |
388 | * | |
389 | * +-------------------------+ | |
390 | * | struct wiphy | | |
391 | * +-------------------------+ | |
392 | * | struct ieee80211_local | | |
393 | * +-------------------------+ | |
394 | * | driver's private data | | |
395 | * +-------------------------+ | |
396 | * | |
397 | */ | |
1ce8e7b5 | 398 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
399 | |
400 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
401 | ||
402 | if (!wiphy) | |
403 | return NULL; | |
404 | ||
9bc383de JB |
405 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
406 | WIPHY_FLAG_4ADDR_AP | | |
407 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 408 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 409 | |
0c1ad2ca | 410 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
411 | |
412 | local = wiphy_priv(wiphy); | |
de95a54b | 413 | |
f0706e82 JB |
414 | local->hw.wiphy = wiphy; |
415 | ||
1ce8e7b5 | 416 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 417 | |
4480f15c | 418 | BUG_ON(!ops->tx); |
4150c572 JB |
419 | BUG_ON(!ops->start); |
420 | BUG_ON(!ops->stop); | |
4480f15c JB |
421 | BUG_ON(!ops->config); |
422 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
423 | BUG_ON(!ops->remove_interface); |
424 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
425 | local->ops = ops; |
426 | ||
e6a9854b JB |
427 | /* set up some defaults */ |
428 | local->hw.queues = 1; | |
429 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
430 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
431 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 432 | local->user_power_level = -1; |
50ae0cf1 KV |
433 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
434 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 435 | |
79010420 | 436 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
437 | |
438 | __hw_addr_init(&local->mc_list); | |
439 | ||
c771c9d8 | 440 | mutex_init(&local->iflist_mtx); |
f3b85252 | 441 | mutex_init(&local->scan_mtx); |
f0706e82 | 442 | |
ad0e2b5a | 443 | mutex_init(&local->key_mtx); |
3b8d81e0 | 444 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
445 | spin_lock_init(&local->queue_stop_reason_lock); |
446 | ||
c2b13452 | 447 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 448 | |
af6b6374 JB |
449 | ieee80211_work_init(local); |
450 | ||
f2753ddb JB |
451 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
452 | ||
3ac64bee | 453 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
454 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
455 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 456 | |
520eb820 KV |
457 | INIT_WORK(&local->dynamic_ps_enable_work, |
458 | ieee80211_dynamic_ps_enable_work); | |
459 | INIT_WORK(&local->dynamic_ps_disable_work, | |
460 | ieee80211_dynamic_ps_disable_work); | |
461 | setup_timer(&local->dynamic_ps_timer, | |
462 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
463 | ||
f0706e82 JB |
464 | sta_info_init(local); |
465 | ||
a6a67db2 | 466 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 467 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
468 | atomic_set(&local->agg_queue_stop[i], 0); |
469 | } | |
f0706e82 JB |
470 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
471 | (unsigned long)local); | |
f0706e82 JB |
472 | |
473 | tasklet_init(&local->tasklet, | |
474 | ieee80211_tasklet_handler, | |
475 | (unsigned long) local); | |
f0706e82 JB |
476 | |
477 | skb_queue_head_init(&local->skb_queue); | |
478 | skb_queue_head_init(&local->skb_queue_unreliable); | |
479 | ||
480 | return local_to_hw(local); | |
481 | } | |
482 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
483 | ||
484 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
485 | { | |
486 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 487 | int result; |
8318d78a | 488 | enum ieee80211_band band; |
be4a4b6a | 489 | int channels, max_bitrates; |
5ef2d41a | 490 | bool supp_ht; |
25e47c18 JB |
491 | static const u32 cipher_suites[] = { |
492 | WLAN_CIPHER_SUITE_WEP40, | |
493 | WLAN_CIPHER_SUITE_WEP104, | |
494 | WLAN_CIPHER_SUITE_TKIP, | |
495 | WLAN_CIPHER_SUITE_CCMP, | |
496 | ||
497 | /* keep last -- depends on hw flags! */ | |
498 | WLAN_CIPHER_SUITE_AES_CMAC | |
499 | }; | |
8318d78a JB |
500 | |
501 | /* | |
502 | * generic code guarantees at least one band, | |
503 | * set this very early because much code assumes | |
504 | * that hw.conf.channel is assigned | |
505 | */ | |
2a519311 | 506 | channels = 0; |
de95a54b | 507 | max_bitrates = 0; |
5ef2d41a | 508 | supp_ht = false; |
8318d78a JB |
509 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
510 | struct ieee80211_supported_band *sband; | |
511 | ||
512 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
513 | if (!sband) |
514 | continue; | |
515 | if (!local->oper_channel) { | |
8318d78a JB |
516 | /* init channel we're on */ |
517 | local->hw.conf.channel = | |
58905ca5 JB |
518 | local->oper_channel = &sband->channels[0]; |
519 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 520 | } |
de95a54b JB |
521 | channels += sband->n_channels; |
522 | ||
523 | if (max_bitrates < sband->n_bitrates) | |
524 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 525 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 526 | } |
f0706e82 | 527 | |
5ba63533 JB |
528 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
529 | sizeof(void *) * channels, GFP_KERNEL); | |
530 | if (!local->int_scan_req) | |
2a519311 JB |
531 | return -ENOMEM; |
532 | ||
f59ac048 LR |
533 | /* if low-level driver supports AP, we also support VLAN */ |
534 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
535 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
536 | ||
537 | /* mac80211 always supports monitor */ | |
538 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
539 | ||
77965c97 JB |
540 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
541 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
542 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
543 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
544 | ||
ab13315a KV |
545 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
546 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
547 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
548 | ||
de95a54b JB |
549 | /* |
550 | * Calculate scan IE length -- we need this to alloc | |
551 | * memory and to subtract from the driver limit. It | |
552 | * includes the (extended) supported rates and HT | |
553 | * information -- SSID is the driver's responsibility. | |
554 | */ | |
555 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
556 | if (supp_ht) |
557 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
558 | |
559 | if (!local->ops->hw_scan) { | |
560 | /* For hw_scan, driver needs to set these up. */ | |
561 | local->hw.wiphy->max_scan_ssids = 4; | |
562 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
563 | } | |
564 | ||
565 | /* | |
566 | * If the driver supports any scan IEs, then assume the | |
567 | * limit includes the IEs mac80211 will add, otherwise | |
568 | * leave it at zero and let the driver sort it out; we | |
569 | * still pass our IEs to the driver but userspace will | |
570 | * not be allowed to in that case. | |
571 | */ | |
572 | if (local->hw.wiphy->max_scan_ie_len) | |
573 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
574 | ||
25e47c18 JB |
575 | local->hw.wiphy->cipher_suites = cipher_suites; |
576 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
577 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
578 | local->hw.wiphy->n_cipher_suites--; | |
579 | ||
f0706e82 JB |
580 | result = wiphy_register(local->hw.wiphy); |
581 | if (result < 0) | |
2a519311 | 582 | goto fail_wiphy_register; |
f0706e82 | 583 | |
e2530083 JB |
584 | /* |
585 | * We use the number of queues for feature tests (QoS, HT) internally | |
586 | * so restrict them appropriately. | |
587 | */ | |
e2530083 JB |
588 | if (hw->queues > IEEE80211_MAX_QUEUES) |
589 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 590 | |
42935eca | 591 | local->workqueue = |
30d3ef41 | 592 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 593 | if (!local->workqueue) { |
f0706e82 JB |
594 | result = -ENOMEM; |
595 | goto fail_workqueue; | |
596 | } | |
597 | ||
b306f453 JB |
598 | /* |
599 | * The hardware needs headroom for sending the frame, | |
600 | * and we need some headroom for passing the frame to monitor | |
601 | * interfaces, but never both at the same time. | |
602 | */ | |
d24deb25 GW |
603 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
604 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
605 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
606 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 607 | |
e9f207f0 JB |
608 | debugfs_hw_add(local); |
609 | ||
b446918b HS |
610 | /* |
611 | * if the driver doesn't specify a max listen interval we | |
612 | * use 5 which should be a safe default | |
613 | */ | |
ea95bba4 | 614 | if (local->hw.max_listen_interval == 0) |
b446918b | 615 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
616 | |
617 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
618 | ||
195e294d JO |
619 | local->hw.conf.dynamic_ps_forced_timeout = -1; |
620 | ||
f0706e82 JB |
621 | result = sta_info_start(local); |
622 | if (result < 0) | |
623 | goto fail_sta_info; | |
624 | ||
d4c4a9a1 AJ |
625 | result = ieee80211_wep_init(local); |
626 | if (result < 0) { | |
627 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
628 | wiphy_name(local->hw.wiphy), result); | |
629 | goto fail_wep; | |
630 | } | |
631 | ||
f0706e82 | 632 | rtnl_lock(); |
f0706e82 | 633 | |
830f9038 JB |
634 | result = ieee80211_init_rate_ctrl_alg(local, |
635 | hw->rate_control_algorithm); | |
f0706e82 JB |
636 | if (result < 0) { |
637 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 638 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
639 | goto fail_rate; |
640 | } | |
641 | ||
8dffff21 JB |
642 | /* add one default STA interface if supported */ |
643 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
644 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
645 | NL80211_IFTYPE_STATION, NULL); | |
646 | if (result) | |
647 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
648 | wiphy_name(local->hw.wiphy)); | |
649 | } | |
f0706e82 | 650 | |
f0706e82 JB |
651 | rtnl_unlock(); |
652 | ||
653 | ieee80211_led_init(local); | |
654 | ||
10f644a4 JB |
655 | local->network_latency_notifier.notifier_call = |
656 | ieee80211_max_network_latency; | |
657 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
658 | &local->network_latency_notifier); | |
10f644a4 JB |
659 | if (result) { |
660 | rtnl_lock(); | |
661 | goto fail_pm_qos; | |
662 | } | |
663 | ||
26b36cfe | 664 | #ifdef CONFIG_INET |
2b2c009e JO |
665 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
666 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
667 | if (result) | |
668 | goto fail_ifa; | |
26b36cfe | 669 | #endif |
2b2c009e | 670 | |
f0706e82 JB |
671 | return 0; |
672 | ||
2b2c009e JO |
673 | fail_ifa: |
674 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
675 | &local->network_latency_notifier); | |
676 | rtnl_lock(); | |
10f644a4 JB |
677 | fail_pm_qos: |
678 | ieee80211_led_exit(local); | |
679 | ieee80211_remove_interfaces(local); | |
10f644a4 | 680 | fail_rate: |
f0706e82 | 681 | rtnl_unlock(); |
d4c4a9a1 | 682 | ieee80211_wep_free(local); |
aba74530 | 683 | fail_wep: |
f0706e82 | 684 | sta_info_stop(local); |
10f644a4 | 685 | fail_sta_info: |
42935eca | 686 | destroy_workqueue(local->workqueue); |
10f644a4 | 687 | fail_workqueue: |
f0706e82 | 688 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 689 | fail_wiphy_register: |
11ba964d | 690 | kfree(local->int_scan_req); |
f0706e82 JB |
691 | return result; |
692 | } | |
693 | EXPORT_SYMBOL(ieee80211_register_hw); | |
694 | ||
f0706e82 JB |
695 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
696 | { | |
697 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
698 | |
699 | tasklet_kill(&local->tx_pending_tasklet); | |
700 | tasklet_kill(&local->tasklet); | |
701 | ||
10f644a4 JB |
702 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
703 | &local->network_latency_notifier); | |
26b36cfe | 704 | #ifdef CONFIG_INET |
2b2c009e | 705 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 706 | #endif |
10f644a4 | 707 | |
f0706e82 JB |
708 | rtnl_lock(); |
709 | ||
79010420 JB |
710 | /* |
711 | * At this point, interface list manipulations are fine | |
712 | * because the driver cannot be handing us frames any | |
713 | * more and the tasklet is killed. | |
714 | */ | |
75636525 | 715 | ieee80211_remove_interfaces(local); |
5b2812e9 | 716 | |
f0706e82 JB |
717 | rtnl_unlock(); |
718 | ||
3ac64bee JB |
719 | cancel_work_sync(&local->reconfig_filter); |
720 | ||
f0706e82 JB |
721 | ieee80211_clear_tx_pending(local); |
722 | sta_info_stop(local); | |
723 | rate_control_deinitialize(local); | |
724 | ||
f64f9e71 JP |
725 | if (skb_queue_len(&local->skb_queue) || |
726 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 727 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 728 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
729 | skb_queue_purge(&local->skb_queue); |
730 | skb_queue_purge(&local->skb_queue_unreliable); | |
731 | ||
42935eca | 732 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
733 | wiphy_unregister(local->hw.wiphy); |
734 | ieee80211_wep_free(local); | |
735 | ieee80211_led_exit(local); | |
5ba63533 | 736 | kfree(local->int_scan_req); |
f0706e82 JB |
737 | } |
738 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
739 | ||
740 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
741 | { | |
742 | struct ieee80211_local *local = hw_to_local(hw); | |
743 | ||
c771c9d8 | 744 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 745 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 746 | |
f0706e82 JB |
747 | wiphy_free(local->hw.wiphy); |
748 | } | |
749 | EXPORT_SYMBOL(ieee80211_free_hw); | |
750 | ||
f0706e82 JB |
751 | static int __init ieee80211_init(void) |
752 | { | |
753 | struct sk_buff *skb; | |
754 | int ret; | |
755 | ||
e039fa4a JB |
756 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
757 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 758 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 759 | |
cccf129f FF |
760 | ret = rc80211_minstrel_init(); |
761 | if (ret) | |
762 | return ret; | |
763 | ||
ec8aa669 FF |
764 | ret = rc80211_minstrel_ht_init(); |
765 | if (ret) | |
766 | goto err_minstrel; | |
767 | ||
4b475898 | 768 | ret = rc80211_pid_init(); |
ad018375 | 769 | if (ret) |
47846c9b | 770 | goto err_pid; |
f0706e82 | 771 | |
47846c9b JB |
772 | ret = ieee80211_iface_init(); |
773 | if (ret) | |
774 | goto err_netdev; | |
e9f207f0 | 775 | |
f0706e82 | 776 | return 0; |
47846c9b JB |
777 | err_netdev: |
778 | rc80211_pid_exit(); | |
779 | err_pid: | |
ec8aa669 FF |
780 | rc80211_minstrel_ht_exit(); |
781 | err_minstrel: | |
47846c9b JB |
782 | rc80211_minstrel_exit(); |
783 | ||
784 | return ret; | |
f0706e82 JB |
785 | } |
786 | ||
f0706e82 JB |
787 | static void __exit ieee80211_exit(void) |
788 | { | |
4b475898 | 789 | rc80211_pid_exit(); |
ec8aa669 | 790 | rc80211_minstrel_ht_exit(); |
cccf129f | 791 | rc80211_minstrel_exit(); |
ac71c691 | 792 | |
3b96766f JB |
793 | /* |
794 | * For key todo, it'll be empty by now but the work | |
795 | * might still be scheduled. | |
796 | */ | |
797 | flush_scheduled_work(); | |
798 | ||
f7a92144 LCC |
799 | if (mesh_allocated) |
800 | ieee80211s_stop(); | |
902acc78 | 801 | |
47846c9b | 802 | ieee80211_iface_exit(); |
f0706e82 JB |
803 | } |
804 | ||
805 | ||
ca9938fe | 806 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
807 | module_exit(ieee80211_exit); |
808 | ||
809 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
810 | MODULE_LICENSE("GPL"); |