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> |
68542962 | 23 | #include <linux/inetdevice.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 | ||
22bedad3 | 75 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
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; |
b8bc4b0a JB |
110 | } else if (local->tmp_channel) { |
111 | chan = scan_chan = local->tmp_channel; | |
112 | channel_type = local->tmp_channel_type; | |
72bdcf34 | 113 | } else { |
b2c258fb | 114 | chan = local->oper_channel; |
0aaffa9b | 115 | channel_type = local->_oper_channel_type; |
72bdcf34 | 116 | } |
f0706e82 | 117 | |
72bdcf34 | 118 | if (chan != local->hw.conf.channel || |
4797938c | 119 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 120 | local->hw.conf.channel = chan; |
4797938c | 121 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
122 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
123 | } | |
8318d78a | 124 | |
0f78231b JB |
125 | if (!conf_is_ht(&local->hw.conf)) { |
126 | /* | |
127 | * mac80211.h documents that this is only valid | |
128 | * when the channel is set to an HT type, and | |
129 | * that otherwise STATIC is used. | |
130 | */ | |
131 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
132 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
133 | local->hw.conf.smps_mode = local->smps_mode; | |
134 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
135 | } | |
136 | ||
58905ca5 | 137 | if (scan_chan) |
e8975581 | 138 | power = chan->max_power; |
8318d78a | 139 | else |
a8302de9 VT |
140 | power = local->power_constr_level ? |
141 | (chan->max_power - local->power_constr_level) : | |
142 | chan->max_power; | |
143 | ||
47afbaf5 | 144 | if (local->user_power_level >= 0) |
a8302de9 VT |
145 | power = min(power, local->user_power_level); |
146 | ||
e8975581 JB |
147 | if (local->hw.conf.power_level != power) { |
148 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
149 | local->hw.conf.power_level = power; | |
150 | } | |
b2c258fb | 151 | |
e8975581 | 152 | if (changed && local->open_count) { |
24487981 | 153 | ret = drv_config(local, changed); |
d73782fd | 154 | /* |
447107fb | 155 | * Goal: |
d73782fd JB |
156 | * HW reconfiguration should never fail, the driver has told |
157 | * us what it can support so it should live up to that promise. | |
447107fb RC |
158 | * |
159 | * Current status: | |
160 | * rfkill is not integrated with mac80211 and a | |
161 | * configuration command can thus fail if hardware rfkill | |
162 | * is enabled | |
163 | * | |
164 | * FIXME: integrate rfkill with mac80211 and then add this | |
165 | * WARN_ON() back | |
166 | * | |
d73782fd | 167 | */ |
447107fb | 168 | /* WARN_ON(ret); */ |
d73782fd | 169 | } |
f0706e82 | 170 | |
b2c258fb JB |
171 | return ret; |
172 | } | |
f0706e82 | 173 | |
471b3efd JB |
174 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
175 | u32 changed) | |
d9430a32 | 176 | { |
471b3efd | 177 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 178 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
179 | |
180 | if (!changed) | |
181 | return; | |
182 | ||
9cef8737 JB |
183 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
184 | /* | |
185 | * While not associated, claim a BSSID of all-zeroes | |
186 | * so that drivers don't do any weird things with the | |
187 | * BSSID at that time. | |
188 | */ | |
189 | if (sdata->vif.bss_conf.assoc) | |
190 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
191 | else | |
192 | sdata->vif.bss_conf.bssid = zero; | |
193 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
194 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
195 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 196 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 197 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
198 | sdata->vif.bss_conf.bssid = zero; |
199 | } else { | |
200 | WARN_ON(1); | |
201 | return; | |
202 | } | |
203 | ||
204 | switch (sdata->vif.type) { | |
205 | case NL80211_IFTYPE_AP: | |
206 | case NL80211_IFTYPE_ADHOC: | |
207 | case NL80211_IFTYPE_MESH_POINT: | |
208 | break; | |
209 | default: | |
210 | /* do not warn to simplify caller in scan.c */ | |
211 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
212 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
213 | return; | |
214 | break; | |
215 | } | |
216 | ||
217 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 218 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
97af7432 | 219 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
2d0ddec5 JB |
220 | sdata->vif.bss_conf.enable_beacon = false; |
221 | } else { | |
222 | /* | |
223 | * Beacon should be enabled, but AP mode must | |
224 | * check whether there is a beacon configured. | |
225 | */ | |
226 | switch (sdata->vif.type) { | |
227 | case NL80211_IFTYPE_AP: | |
228 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 229 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
230 | break; |
231 | case NL80211_IFTYPE_ADHOC: | |
232 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 233 | !!sdata->u.ibss.presp; |
2d0ddec5 JB |
234 | break; |
235 | case NL80211_IFTYPE_MESH_POINT: | |
236 | sdata->vif.bss_conf.enable_beacon = true; | |
237 | break; | |
238 | default: | |
239 | /* not reached */ | |
240 | WARN_ON(1); | |
241 | break; | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
12375ef9 | 246 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
247 | } |
248 | ||
f698d856 | 249 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 250 | { |
bda3933a JB |
251 | sdata->vif.bss_conf.use_cts_prot = false; |
252 | sdata->vif.bss_conf.use_short_preamble = false; | |
253 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
254 | return BSS_CHANGED_ERP_CTS_PROT | |
255 | BSS_CHANGED_ERP_PREAMBLE | | |
256 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
257 | } |
258 | ||
f0706e82 JB |
259 | static void ieee80211_tasklet_handler(unsigned long data) |
260 | { | |
261 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
262 | struct sk_buff *skb; | |
f0706e82 JB |
263 | |
264 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
265 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
266 | switch (skb->pkt_type) { | |
267 | case IEEE80211_RX_MSG: | |
51fb61e7 | 268 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
269 | * netstack. */ |
270 | skb->pkt_type = 0; | |
f1d58c25 | 271 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
272 | break; |
273 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 274 | skb->pkt_type = 0; |
e039fa4a | 275 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 276 | break; |
f4ea83dd | 277 | default: |
5e3f3089 LF |
278 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
279 | skb->pkt_type); | |
f0706e82 JB |
280 | dev_kfree_skb(skb); |
281 | break; | |
282 | } | |
283 | } | |
284 | } | |
285 | ||
f2753ddb JB |
286 | static void ieee80211_restart_work(struct work_struct *work) |
287 | { | |
288 | struct ieee80211_local *local = | |
289 | container_of(work, struct ieee80211_local, restart_work); | |
290 | ||
291 | rtnl_lock(); | |
292 | ieee80211_reconfig(local); | |
293 | rtnl_unlock(); | |
294 | } | |
295 | ||
296 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
297 | { | |
298 | struct ieee80211_local *local = hw_to_local(hw); | |
299 | ||
b5878a2d JB |
300 | trace_api_restart_hw(local); |
301 | ||
f2753ddb JB |
302 | /* use this reason, __ieee80211_resume will unblock it */ |
303 | ieee80211_stop_queues_by_reason(hw, | |
304 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
305 | ||
306 | schedule_work(&local->restart_work); | |
307 | } | |
308 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
309 | ||
0f78231b JB |
310 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
311 | { | |
312 | struct ieee80211_local *local = | |
313 | container_of(work, struct ieee80211_local, recalc_smps); | |
314 | ||
315 | mutex_lock(&local->iflist_mtx); | |
316 | ieee80211_recalc_smps(local, NULL); | |
317 | mutex_unlock(&local->iflist_mtx); | |
318 | } | |
319 | ||
26b36cfe | 320 | #ifdef CONFIG_INET |
2b2c009e JO |
321 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
322 | unsigned long data, void *arg) | |
323 | { | |
324 | struct in_ifaddr *ifa = arg; | |
325 | struct ieee80211_local *local = | |
326 | container_of(nb, struct ieee80211_local, | |
327 | ifa_notifier); | |
328 | struct net_device *ndev = ifa->ifa_dev->dev; | |
329 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 330 | struct in_device *idev; |
2b2c009e | 331 | struct ieee80211_sub_if_data *sdata; |
68542962 | 332 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 333 | struct ieee80211_if_managed *ifmgd; |
68542962 | 334 | int c = 0; |
2b2c009e | 335 | |
90b72609 JO |
336 | if (!netif_running(ndev)) |
337 | return NOTIFY_DONE; | |
338 | ||
2b2c009e JO |
339 | /* Make sure it's our interface that got changed */ |
340 | if (!wdev) | |
341 | return NOTIFY_DONE; | |
342 | ||
343 | if (wdev->wiphy != local->hw.wiphy) | |
344 | return NOTIFY_DONE; | |
345 | ||
2b2c009e | 346 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 347 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
348 | |
349 | /* ARP filtering is only supported in managed mode */ | |
350 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
351 | return NOTIFY_DONE; | |
352 | ||
68542962 JO |
353 | idev = sdata->dev->ip_ptr; |
354 | if (!idev) | |
355 | return NOTIFY_DONE; | |
356 | ||
2b2c009e JO |
357 | ifmgd = &sdata->u.mgd; |
358 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
359 | |
360 | /* Copy the addresses to the bss_conf list */ | |
361 | ifa = idev->ifa_list; | |
362 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
363 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
364 | ifa = ifa->ifa_next; | |
365 | c++; | |
366 | } | |
367 | ||
368 | /* If not all addresses fit the list, disable filtering */ | |
369 | if (ifa) { | |
370 | sdata->arp_filter_state = false; | |
371 | c = 0; | |
372 | } else { | |
373 | sdata->arp_filter_state = true; | |
374 | } | |
375 | bss_conf->arp_addr_cnt = c; | |
376 | ||
377 | /* Configure driver only if associated */ | |
378 | if (ifmgd->associated) { | |
379 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
380 | ieee80211_bss_info_change_notify(sdata, | |
381 | BSS_CHANGED_ARP_FILTER); | |
382 | } | |
383 | ||
2b2c009e JO |
384 | mutex_unlock(&ifmgd->mtx); |
385 | ||
386 | return NOTIFY_DONE; | |
387 | } | |
26b36cfe | 388 | #endif |
2b2c009e | 389 | |
f0706e82 JB |
390 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
391 | const struct ieee80211_ops *ops) | |
392 | { | |
f0706e82 | 393 | struct ieee80211_local *local; |
96f5e66e | 394 | int priv_size, i; |
f0706e82 JB |
395 | struct wiphy *wiphy; |
396 | ||
397 | /* Ensure 32-byte alignment of our private data and hw private data. | |
398 | * We use the wiphy priv data for both our ieee80211_local and for | |
399 | * the driver's private data | |
400 | * | |
401 | * In memory it'll be like this: | |
402 | * | |
403 | * +-------------------------+ | |
404 | * | struct wiphy | | |
405 | * +-------------------------+ | |
406 | * | struct ieee80211_local | | |
407 | * +-------------------------+ | |
408 | * | driver's private data | | |
409 | * +-------------------------+ | |
410 | * | |
411 | */ | |
1ce8e7b5 | 412 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
413 | |
414 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
415 | ||
416 | if (!wiphy) | |
417 | return NULL; | |
418 | ||
9bc383de JB |
419 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
420 | WIPHY_FLAG_4ADDR_AP | | |
421 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 422 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 423 | |
0c1ad2ca | 424 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
425 | |
426 | local = wiphy_priv(wiphy); | |
de95a54b | 427 | |
f0706e82 JB |
428 | local->hw.wiphy = wiphy; |
429 | ||
1ce8e7b5 | 430 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 431 | |
4480f15c | 432 | BUG_ON(!ops->tx); |
4150c572 JB |
433 | BUG_ON(!ops->start); |
434 | BUG_ON(!ops->stop); | |
4480f15c JB |
435 | BUG_ON(!ops->config); |
436 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
437 | BUG_ON(!ops->remove_interface); |
438 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
439 | local->ops = ops; |
440 | ||
e6a9854b JB |
441 | /* set up some defaults */ |
442 | local->hw.queues = 1; | |
443 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
444 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
445 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 446 | local->user_power_level = -1; |
50ae0cf1 KV |
447 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
448 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 449 | |
79010420 | 450 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
451 | |
452 | __hw_addr_init(&local->mc_list); | |
453 | ||
c771c9d8 | 454 | mutex_init(&local->iflist_mtx); |
f3b85252 | 455 | mutex_init(&local->scan_mtx); |
f0706e82 | 456 | |
ad0e2b5a | 457 | mutex_init(&local->key_mtx); |
3b8d81e0 | 458 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
459 | spin_lock_init(&local->queue_stop_reason_lock); |
460 | ||
c2b13452 | 461 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 462 | |
af6b6374 JB |
463 | ieee80211_work_init(local); |
464 | ||
f2753ddb JB |
465 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
466 | ||
3ac64bee | 467 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
468 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
469 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 470 | |
520eb820 KV |
471 | INIT_WORK(&local->dynamic_ps_enable_work, |
472 | ieee80211_dynamic_ps_enable_work); | |
473 | INIT_WORK(&local->dynamic_ps_disable_work, | |
474 | ieee80211_dynamic_ps_disable_work); | |
475 | setup_timer(&local->dynamic_ps_timer, | |
476 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
477 | ||
f0706e82 JB |
478 | sta_info_init(local); |
479 | ||
a6a67db2 | 480 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 481 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
482 | atomic_set(&local->agg_queue_stop[i], 0); |
483 | } | |
f0706e82 JB |
484 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
485 | (unsigned long)local); | |
f0706e82 JB |
486 | |
487 | tasklet_init(&local->tasklet, | |
488 | ieee80211_tasklet_handler, | |
489 | (unsigned long) local); | |
f0706e82 JB |
490 | |
491 | skb_queue_head_init(&local->skb_queue); | |
492 | skb_queue_head_init(&local->skb_queue_unreliable); | |
493 | ||
494 | return local_to_hw(local); | |
495 | } | |
496 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
497 | ||
498 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
499 | { | |
500 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 501 | int result; |
8318d78a | 502 | enum ieee80211_band band; |
be4a4b6a | 503 | int channels, max_bitrates; |
5ef2d41a | 504 | bool supp_ht; |
25e47c18 JB |
505 | static const u32 cipher_suites[] = { |
506 | WLAN_CIPHER_SUITE_WEP40, | |
507 | WLAN_CIPHER_SUITE_WEP104, | |
508 | WLAN_CIPHER_SUITE_TKIP, | |
509 | WLAN_CIPHER_SUITE_CCMP, | |
510 | ||
511 | /* keep last -- depends on hw flags! */ | |
512 | WLAN_CIPHER_SUITE_AES_CMAC | |
513 | }; | |
8318d78a JB |
514 | |
515 | /* | |
516 | * generic code guarantees at least one band, | |
517 | * set this very early because much code assumes | |
518 | * that hw.conf.channel is assigned | |
519 | */ | |
2a519311 | 520 | channels = 0; |
de95a54b | 521 | max_bitrates = 0; |
5ef2d41a | 522 | supp_ht = false; |
8318d78a JB |
523 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
524 | struct ieee80211_supported_band *sband; | |
525 | ||
526 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
527 | if (!sband) |
528 | continue; | |
529 | if (!local->oper_channel) { | |
8318d78a JB |
530 | /* init channel we're on */ |
531 | local->hw.conf.channel = | |
58905ca5 JB |
532 | local->oper_channel = &sband->channels[0]; |
533 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 534 | } |
de95a54b JB |
535 | channels += sband->n_channels; |
536 | ||
537 | if (max_bitrates < sband->n_bitrates) | |
538 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 539 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 540 | } |
f0706e82 | 541 | |
5ba63533 JB |
542 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
543 | sizeof(void *) * channels, GFP_KERNEL); | |
544 | if (!local->int_scan_req) | |
2a519311 JB |
545 | return -ENOMEM; |
546 | ||
f59ac048 LR |
547 | /* if low-level driver supports AP, we also support VLAN */ |
548 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
549 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
550 | ||
551 | /* mac80211 always supports monitor */ | |
552 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
553 | ||
77965c97 JB |
554 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
555 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
556 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
557 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
558 | ||
ab13315a KV |
559 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
560 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
561 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
562 | ||
de95a54b JB |
563 | /* |
564 | * Calculate scan IE length -- we need this to alloc | |
565 | * memory and to subtract from the driver limit. It | |
566 | * includes the (extended) supported rates and HT | |
567 | * information -- SSID is the driver's responsibility. | |
568 | */ | |
569 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
570 | if (supp_ht) |
571 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
572 | |
573 | if (!local->ops->hw_scan) { | |
574 | /* For hw_scan, driver needs to set these up. */ | |
575 | local->hw.wiphy->max_scan_ssids = 4; | |
576 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
577 | } | |
578 | ||
579 | /* | |
580 | * If the driver supports any scan IEs, then assume the | |
581 | * limit includes the IEs mac80211 will add, otherwise | |
582 | * leave it at zero and let the driver sort it out; we | |
583 | * still pass our IEs to the driver but userspace will | |
584 | * not be allowed to in that case. | |
585 | */ | |
586 | if (local->hw.wiphy->max_scan_ie_len) | |
587 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
588 | ||
25e47c18 JB |
589 | local->hw.wiphy->cipher_suites = cipher_suites; |
590 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
591 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
592 | local->hw.wiphy->n_cipher_suites--; | |
593 | ||
f0706e82 JB |
594 | result = wiphy_register(local->hw.wiphy); |
595 | if (result < 0) | |
2a519311 | 596 | goto fail_wiphy_register; |
f0706e82 | 597 | |
e2530083 JB |
598 | /* |
599 | * We use the number of queues for feature tests (QoS, HT) internally | |
600 | * so restrict them appropriately. | |
601 | */ | |
e2530083 JB |
602 | if (hw->queues > IEEE80211_MAX_QUEUES) |
603 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 604 | |
42935eca | 605 | local->workqueue = |
30d3ef41 | 606 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 607 | if (!local->workqueue) { |
f0706e82 JB |
608 | result = -ENOMEM; |
609 | goto fail_workqueue; | |
610 | } | |
611 | ||
b306f453 JB |
612 | /* |
613 | * The hardware needs headroom for sending the frame, | |
614 | * and we need some headroom for passing the frame to monitor | |
615 | * interfaces, but never both at the same time. | |
616 | */ | |
d24deb25 GW |
617 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
618 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
619 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
620 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 621 | |
e9f207f0 JB |
622 | debugfs_hw_add(local); |
623 | ||
b446918b HS |
624 | /* |
625 | * if the driver doesn't specify a max listen interval we | |
626 | * use 5 which should be a safe default | |
627 | */ | |
ea95bba4 | 628 | if (local->hw.max_listen_interval == 0) |
b446918b | 629 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
630 | |
631 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
632 | ||
195e294d JO |
633 | local->hw.conf.dynamic_ps_forced_timeout = -1; |
634 | ||
f0706e82 JB |
635 | result = sta_info_start(local); |
636 | if (result < 0) | |
637 | goto fail_sta_info; | |
638 | ||
d4c4a9a1 AJ |
639 | result = ieee80211_wep_init(local); |
640 | if (result < 0) { | |
641 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", | |
642 | wiphy_name(local->hw.wiphy), result); | |
643 | goto fail_wep; | |
644 | } | |
645 | ||
f0706e82 | 646 | rtnl_lock(); |
f0706e82 | 647 | |
830f9038 JB |
648 | result = ieee80211_init_rate_ctrl_alg(local, |
649 | hw->rate_control_algorithm); | |
f0706e82 JB |
650 | if (result < 0) { |
651 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 652 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
653 | goto fail_rate; |
654 | } | |
655 | ||
8dffff21 JB |
656 | /* add one default STA interface if supported */ |
657 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
658 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
659 | NL80211_IFTYPE_STATION, NULL); | |
660 | if (result) | |
661 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
662 | wiphy_name(local->hw.wiphy)); | |
663 | } | |
f0706e82 | 664 | |
f0706e82 JB |
665 | rtnl_unlock(); |
666 | ||
667 | ieee80211_led_init(local); | |
668 | ||
10f644a4 JB |
669 | local->network_latency_notifier.notifier_call = |
670 | ieee80211_max_network_latency; | |
671 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
672 | &local->network_latency_notifier); | |
10f644a4 JB |
673 | if (result) { |
674 | rtnl_lock(); | |
675 | goto fail_pm_qos; | |
676 | } | |
677 | ||
26b36cfe | 678 | #ifdef CONFIG_INET |
2b2c009e JO |
679 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
680 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
681 | if (result) | |
682 | goto fail_ifa; | |
26b36cfe | 683 | #endif |
2b2c009e | 684 | |
f0706e82 JB |
685 | return 0; |
686 | ||
2b2c009e JO |
687 | fail_ifa: |
688 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
689 | &local->network_latency_notifier); | |
690 | rtnl_lock(); | |
10f644a4 JB |
691 | fail_pm_qos: |
692 | ieee80211_led_exit(local); | |
693 | ieee80211_remove_interfaces(local); | |
10f644a4 | 694 | fail_rate: |
f0706e82 | 695 | rtnl_unlock(); |
d4c4a9a1 | 696 | ieee80211_wep_free(local); |
aba74530 | 697 | fail_wep: |
f0706e82 | 698 | sta_info_stop(local); |
10f644a4 | 699 | fail_sta_info: |
42935eca | 700 | destroy_workqueue(local->workqueue); |
10f644a4 | 701 | fail_workqueue: |
f0706e82 | 702 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 703 | fail_wiphy_register: |
11ba964d | 704 | kfree(local->int_scan_req); |
f0706e82 JB |
705 | return result; |
706 | } | |
707 | EXPORT_SYMBOL(ieee80211_register_hw); | |
708 | ||
f0706e82 JB |
709 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
710 | { | |
711 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
712 | |
713 | tasklet_kill(&local->tx_pending_tasklet); | |
714 | tasklet_kill(&local->tasklet); | |
715 | ||
10f644a4 JB |
716 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
717 | &local->network_latency_notifier); | |
26b36cfe | 718 | #ifdef CONFIG_INET |
2b2c009e | 719 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 720 | #endif |
10f644a4 | 721 | |
f0706e82 JB |
722 | rtnl_lock(); |
723 | ||
79010420 JB |
724 | /* |
725 | * At this point, interface list manipulations are fine | |
726 | * because the driver cannot be handing us frames any | |
727 | * more and the tasklet is killed. | |
728 | */ | |
75636525 | 729 | ieee80211_remove_interfaces(local); |
5b2812e9 | 730 | |
f0706e82 JB |
731 | rtnl_unlock(); |
732 | ||
3ac64bee JB |
733 | cancel_work_sync(&local->reconfig_filter); |
734 | ||
f0706e82 JB |
735 | ieee80211_clear_tx_pending(local); |
736 | sta_info_stop(local); | |
737 | rate_control_deinitialize(local); | |
738 | ||
f64f9e71 JP |
739 | if (skb_queue_len(&local->skb_queue) || |
740 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 741 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 742 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
743 | skb_queue_purge(&local->skb_queue); |
744 | skb_queue_purge(&local->skb_queue_unreliable); | |
745 | ||
42935eca | 746 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
747 | wiphy_unregister(local->hw.wiphy); |
748 | ieee80211_wep_free(local); | |
749 | ieee80211_led_exit(local); | |
5ba63533 | 750 | kfree(local->int_scan_req); |
f0706e82 JB |
751 | } |
752 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
753 | ||
754 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
755 | { | |
756 | struct ieee80211_local *local = hw_to_local(hw); | |
757 | ||
c771c9d8 | 758 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 759 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 760 | |
f0706e82 JB |
761 | wiphy_free(local->hw.wiphy); |
762 | } | |
763 | EXPORT_SYMBOL(ieee80211_free_hw); | |
764 | ||
f0706e82 JB |
765 | static int __init ieee80211_init(void) |
766 | { | |
767 | struct sk_buff *skb; | |
768 | int ret; | |
769 | ||
e039fa4a JB |
770 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
771 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 772 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 773 | |
cccf129f FF |
774 | ret = rc80211_minstrel_init(); |
775 | if (ret) | |
776 | return ret; | |
777 | ||
ec8aa669 FF |
778 | ret = rc80211_minstrel_ht_init(); |
779 | if (ret) | |
780 | goto err_minstrel; | |
781 | ||
4b475898 | 782 | ret = rc80211_pid_init(); |
ad018375 | 783 | if (ret) |
47846c9b | 784 | goto err_pid; |
f0706e82 | 785 | |
47846c9b JB |
786 | ret = ieee80211_iface_init(); |
787 | if (ret) | |
788 | goto err_netdev; | |
e9f207f0 | 789 | |
f0706e82 | 790 | return 0; |
47846c9b JB |
791 | err_netdev: |
792 | rc80211_pid_exit(); | |
793 | err_pid: | |
ec8aa669 FF |
794 | rc80211_minstrel_ht_exit(); |
795 | err_minstrel: | |
47846c9b JB |
796 | rc80211_minstrel_exit(); |
797 | ||
798 | return ret; | |
f0706e82 JB |
799 | } |
800 | ||
f0706e82 JB |
801 | static void __exit ieee80211_exit(void) |
802 | { | |
4b475898 | 803 | rc80211_pid_exit(); |
ec8aa669 | 804 | rc80211_minstrel_ht_exit(); |
cccf129f | 805 | rc80211_minstrel_exit(); |
ac71c691 | 806 | |
3b96766f JB |
807 | /* |
808 | * For key todo, it'll be empty by now but the work | |
809 | * might still be scheduled. | |
810 | */ | |
811 | flush_scheduled_work(); | |
812 | ||
f7a92144 LCC |
813 | if (mesh_allocated) |
814 | ieee80211s_stop(); | |
902acc78 | 815 | |
47846c9b | 816 | ieee80211_iface_exit(); |
f0706e82 JB |
817 | } |
818 | ||
819 | ||
ca9938fe | 820 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
821 | module_exit(ieee80211_exit); |
822 | ||
823 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
824 | MODULE_LICENSE("GPL"); |