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> | |
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; |
45521245 | 110 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
b8bc4b0a JB |
111 | } else if (local->tmp_channel) { |
112 | chan = scan_chan = local->tmp_channel; | |
113 | channel_type = local->tmp_channel_type; | |
45521245 | 114 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
72bdcf34 | 115 | } else { |
b2c258fb | 116 | chan = local->oper_channel; |
0aaffa9b | 117 | channel_type = local->_oper_channel_type; |
45521245 | 118 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; |
72bdcf34 | 119 | } |
f0706e82 | 120 | |
72bdcf34 | 121 | if (chan != local->hw.conf.channel || |
4797938c | 122 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 123 | local->hw.conf.channel = chan; |
4797938c | 124 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
125 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
126 | } | |
8318d78a | 127 | |
0f78231b JB |
128 | if (!conf_is_ht(&local->hw.conf)) { |
129 | /* | |
130 | * mac80211.h documents that this is only valid | |
131 | * when the channel is set to an HT type, and | |
132 | * that otherwise STATIC is used. | |
133 | */ | |
134 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
135 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
136 | local->hw.conf.smps_mode = local->smps_mode; | |
137 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
138 | } | |
139 | ||
58905ca5 | 140 | if (scan_chan) |
e8975581 | 141 | power = chan->max_power; |
8318d78a | 142 | else |
a8302de9 VT |
143 | power = local->power_constr_level ? |
144 | (chan->max_power - local->power_constr_level) : | |
145 | chan->max_power; | |
146 | ||
47afbaf5 | 147 | if (local->user_power_level >= 0) |
a8302de9 VT |
148 | power = min(power, local->user_power_level); |
149 | ||
e8975581 JB |
150 | if (local->hw.conf.power_level != power) { |
151 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
152 | local->hw.conf.power_level = power; | |
153 | } | |
b2c258fb | 154 | |
e8975581 | 155 | if (changed && local->open_count) { |
24487981 | 156 | ret = drv_config(local, changed); |
d73782fd | 157 | /* |
447107fb | 158 | * Goal: |
d73782fd JB |
159 | * HW reconfiguration should never fail, the driver has told |
160 | * us what it can support so it should live up to that promise. | |
447107fb RC |
161 | * |
162 | * Current status: | |
163 | * rfkill is not integrated with mac80211 and a | |
164 | * configuration command can thus fail if hardware rfkill | |
165 | * is enabled | |
166 | * | |
167 | * FIXME: integrate rfkill with mac80211 and then add this | |
168 | * WARN_ON() back | |
169 | * | |
d73782fd | 170 | */ |
447107fb | 171 | /* WARN_ON(ret); */ |
d73782fd | 172 | } |
f0706e82 | 173 | |
b2c258fb JB |
174 | return ret; |
175 | } | |
f0706e82 | 176 | |
471b3efd JB |
177 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
178 | u32 changed) | |
d9430a32 | 179 | { |
471b3efd | 180 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 181 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
182 | |
183 | if (!changed) | |
184 | return; | |
185 | ||
9cef8737 JB |
186 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
187 | /* | |
188 | * While not associated, claim a BSSID of all-zeroes | |
189 | * so that drivers don't do any weird things with the | |
190 | * BSSID at that time. | |
191 | */ | |
192 | if (sdata->vif.bss_conf.assoc) | |
193 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
194 | else | |
195 | sdata->vif.bss_conf.bssid = zero; | |
196 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
197 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
198 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 199 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
2d0ddec5 | 200 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
201 | sdata->vif.bss_conf.bssid = zero; |
202 | } else { | |
203 | WARN_ON(1); | |
204 | return; | |
205 | } | |
206 | ||
207 | switch (sdata->vif.type) { | |
208 | case NL80211_IFTYPE_AP: | |
209 | case NL80211_IFTYPE_ADHOC: | |
210 | case NL80211_IFTYPE_MESH_POINT: | |
211 | break; | |
212 | default: | |
213 | /* do not warn to simplify caller in scan.c */ | |
214 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
215 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
216 | return; | |
217 | break; | |
218 | } | |
219 | ||
220 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 221 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
97af7432 | 222 | test_bit(SCAN_SW_SCANNING, &local->scanning)) { |
2d0ddec5 JB |
223 | sdata->vif.bss_conf.enable_beacon = false; |
224 | } else { | |
225 | /* | |
226 | * Beacon should be enabled, but AP mode must | |
227 | * check whether there is a beacon configured. | |
228 | */ | |
229 | switch (sdata->vif.type) { | |
230 | case NL80211_IFTYPE_AP: | |
231 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 232 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
233 | break; |
234 | case NL80211_IFTYPE_ADHOC: | |
235 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 236 | !!sdata->u.ibss.presp; |
2d0ddec5 JB |
237 | break; |
238 | case NL80211_IFTYPE_MESH_POINT: | |
239 | sdata->vif.bss_conf.enable_beacon = true; | |
240 | break; | |
241 | default: | |
242 | /* not reached */ | |
243 | WARN_ON(1); | |
244 | break; | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
12375ef9 | 249 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
250 | } |
251 | ||
f698d856 | 252 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 253 | { |
bda3933a JB |
254 | sdata->vif.bss_conf.use_cts_prot = false; |
255 | sdata->vif.bss_conf.use_short_preamble = false; | |
256 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
257 | return BSS_CHANGED_ERP_CTS_PROT | |
258 | BSS_CHANGED_ERP_PREAMBLE | | |
259 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
260 | } |
261 | ||
f0706e82 JB |
262 | static void ieee80211_tasklet_handler(unsigned long data) |
263 | { | |
264 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
265 | struct sk_buff *skb; | |
f0706e82 JB |
266 | |
267 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
268 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
269 | switch (skb->pkt_type) { | |
270 | case IEEE80211_RX_MSG: | |
51fb61e7 | 271 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
272 | * netstack. */ |
273 | skb->pkt_type = 0; | |
f1d58c25 | 274 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
275 | break; |
276 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 277 | skb->pkt_type = 0; |
e039fa4a | 278 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 279 | break; |
f4ea83dd | 280 | default: |
5e3f3089 LF |
281 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
282 | skb->pkt_type); | |
f0706e82 JB |
283 | dev_kfree_skb(skb); |
284 | break; | |
285 | } | |
286 | } | |
287 | } | |
288 | ||
f2753ddb JB |
289 | static void ieee80211_restart_work(struct work_struct *work) |
290 | { | |
291 | struct ieee80211_local *local = | |
292 | container_of(work, struct ieee80211_local, restart_work); | |
293 | ||
294 | rtnl_lock(); | |
295 | ieee80211_reconfig(local); | |
296 | rtnl_unlock(); | |
297 | } | |
298 | ||
299 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
300 | { | |
301 | struct ieee80211_local *local = hw_to_local(hw); | |
302 | ||
b5878a2d JB |
303 | trace_api_restart_hw(local); |
304 | ||
f2753ddb JB |
305 | /* use this reason, __ieee80211_resume will unblock it */ |
306 | ieee80211_stop_queues_by_reason(hw, | |
307 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
308 | ||
309 | schedule_work(&local->restart_work); | |
310 | } | |
311 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
312 | ||
0f78231b JB |
313 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
314 | { | |
315 | struct ieee80211_local *local = | |
316 | container_of(work, struct ieee80211_local, recalc_smps); | |
317 | ||
318 | mutex_lock(&local->iflist_mtx); | |
319 | ieee80211_recalc_smps(local, NULL); | |
320 | mutex_unlock(&local->iflist_mtx); | |
321 | } | |
322 | ||
26b36cfe | 323 | #ifdef CONFIG_INET |
2b2c009e JO |
324 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
325 | unsigned long data, void *arg) | |
326 | { | |
327 | struct in_ifaddr *ifa = arg; | |
328 | struct ieee80211_local *local = | |
329 | container_of(nb, struct ieee80211_local, | |
330 | ifa_notifier); | |
331 | struct net_device *ndev = ifa->ifa_dev->dev; | |
332 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 333 | struct in_device *idev; |
2b2c009e | 334 | struct ieee80211_sub_if_data *sdata; |
68542962 | 335 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 336 | struct ieee80211_if_managed *ifmgd; |
68542962 | 337 | int c = 0; |
2b2c009e | 338 | |
90b72609 JO |
339 | if (!netif_running(ndev)) |
340 | return NOTIFY_DONE; | |
341 | ||
2b2c009e JO |
342 | /* Make sure it's our interface that got changed */ |
343 | if (!wdev) | |
344 | return NOTIFY_DONE; | |
345 | ||
346 | if (wdev->wiphy != local->hw.wiphy) | |
347 | return NOTIFY_DONE; | |
348 | ||
2b2c009e | 349 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 350 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
351 | |
352 | /* ARP filtering is only supported in managed mode */ | |
353 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
354 | return NOTIFY_DONE; | |
355 | ||
68542962 JO |
356 | idev = sdata->dev->ip_ptr; |
357 | if (!idev) | |
358 | return NOTIFY_DONE; | |
359 | ||
2b2c009e JO |
360 | ifmgd = &sdata->u.mgd; |
361 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
362 | |
363 | /* Copy the addresses to the bss_conf list */ | |
364 | ifa = idev->ifa_list; | |
365 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
366 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
367 | ifa = ifa->ifa_next; | |
368 | c++; | |
369 | } | |
370 | ||
371 | /* If not all addresses fit the list, disable filtering */ | |
372 | if (ifa) { | |
373 | sdata->arp_filter_state = false; | |
374 | c = 0; | |
375 | } else { | |
376 | sdata->arp_filter_state = true; | |
377 | } | |
378 | bss_conf->arp_addr_cnt = c; | |
379 | ||
380 | /* Configure driver only if associated */ | |
381 | if (ifmgd->associated) { | |
382 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
383 | ieee80211_bss_info_change_notify(sdata, | |
384 | BSS_CHANGED_ARP_FILTER); | |
385 | } | |
386 | ||
2b2c009e JO |
387 | mutex_unlock(&ifmgd->mtx); |
388 | ||
389 | return NOTIFY_DONE; | |
390 | } | |
26b36cfe | 391 | #endif |
2b2c009e | 392 | |
4e6cbfd0 JL |
393 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
394 | { | |
395 | struct ieee80211_local *local = | |
396 | container_of(napi, struct ieee80211_local, napi); | |
397 | ||
398 | return local->ops->napi_poll(&local->hw, budget); | |
399 | } | |
400 | ||
401 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
402 | { | |
403 | struct ieee80211_local *local = hw_to_local(hw); | |
404 | ||
405 | napi_schedule(&local->napi); | |
406 | } | |
407 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
408 | ||
409 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
410 | { | |
411 | struct ieee80211_local *local = hw_to_local(hw); | |
412 | ||
413 | napi_complete(&local->napi); | |
414 | } | |
415 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
416 | ||
f0706e82 JB |
417 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
418 | const struct ieee80211_ops *ops) | |
419 | { | |
f0706e82 | 420 | struct ieee80211_local *local; |
96f5e66e | 421 | int priv_size, i; |
f0706e82 JB |
422 | struct wiphy *wiphy; |
423 | ||
424 | /* Ensure 32-byte alignment of our private data and hw private data. | |
425 | * We use the wiphy priv data for both our ieee80211_local and for | |
426 | * the driver's private data | |
427 | * | |
428 | * In memory it'll be like this: | |
429 | * | |
430 | * +-------------------------+ | |
431 | * | struct wiphy | | |
432 | * +-------------------------+ | |
433 | * | struct ieee80211_local | | |
434 | * +-------------------------+ | |
435 | * | driver's private data | | |
436 | * +-------------------------+ | |
437 | * | |
438 | */ | |
1ce8e7b5 | 439 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
440 | |
441 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
442 | ||
443 | if (!wiphy) | |
444 | return NULL; | |
445 | ||
9bc383de JB |
446 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
447 | WIPHY_FLAG_4ADDR_AP | | |
448 | WIPHY_FLAG_4ADDR_STATION; | |
f0706e82 | 449 | wiphy->privid = mac80211_wiphy_privid; |
18a83659 | 450 | |
0c1ad2ca | 451 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
452 | |
453 | local = wiphy_priv(wiphy); | |
de95a54b | 454 | |
f0706e82 JB |
455 | local->hw.wiphy = wiphy; |
456 | ||
1ce8e7b5 | 457 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 458 | |
4480f15c | 459 | BUG_ON(!ops->tx); |
4150c572 JB |
460 | BUG_ON(!ops->start); |
461 | BUG_ON(!ops->stop); | |
4480f15c JB |
462 | BUG_ON(!ops->config); |
463 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
464 | BUG_ON(!ops->remove_interface); |
465 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
466 | local->ops = ops; |
467 | ||
e6a9854b JB |
468 | /* set up some defaults */ |
469 | local->hw.queues = 1; | |
470 | local->hw.max_rates = 1; | |
b9a5f8ca JM |
471 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
472 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 473 | local->user_power_level = -1; |
50ae0cf1 KV |
474 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
475 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 476 | |
79010420 | 477 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
478 | |
479 | __hw_addr_init(&local->mc_list); | |
480 | ||
c771c9d8 | 481 | mutex_init(&local->iflist_mtx); |
f3b85252 | 482 | mutex_init(&local->scan_mtx); |
f0706e82 | 483 | |
ad0e2b5a | 484 | mutex_init(&local->key_mtx); |
3b8d81e0 | 485 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
486 | spin_lock_init(&local->queue_stop_reason_lock); |
487 | ||
c2b13452 | 488 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 489 | |
af6b6374 JB |
490 | ieee80211_work_init(local); |
491 | ||
f2753ddb JB |
492 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
493 | ||
3ac64bee | 494 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
495 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
496 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 497 | |
520eb820 KV |
498 | INIT_WORK(&local->dynamic_ps_enable_work, |
499 | ieee80211_dynamic_ps_enable_work); | |
500 | INIT_WORK(&local->dynamic_ps_disable_work, | |
501 | ieee80211_dynamic_ps_disable_work); | |
502 | setup_timer(&local->dynamic_ps_timer, | |
503 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
504 | ||
f0706e82 JB |
505 | sta_info_init(local); |
506 | ||
a6a67db2 | 507 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 508 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
509 | atomic_set(&local->agg_queue_stop[i], 0); |
510 | } | |
f0706e82 JB |
511 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
512 | (unsigned long)local); | |
f0706e82 JB |
513 | |
514 | tasklet_init(&local->tasklet, | |
515 | ieee80211_tasklet_handler, | |
516 | (unsigned long) local); | |
f0706e82 JB |
517 | |
518 | skb_queue_head_init(&local->skb_queue); | |
519 | skb_queue_head_init(&local->skb_queue_unreliable); | |
520 | ||
4e6cbfd0 JL |
521 | /* init dummy netdev for use w/ NAPI */ |
522 | init_dummy_netdev(&local->napi_dev); | |
523 | ||
f0706e82 JB |
524 | return local_to_hw(local); |
525 | } | |
526 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
527 | ||
528 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
529 | { | |
530 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 | 531 | int result; |
8318d78a | 532 | enum ieee80211_band band; |
be4a4b6a | 533 | int channels, max_bitrates; |
5ef2d41a | 534 | bool supp_ht; |
25e47c18 JB |
535 | static const u32 cipher_suites[] = { |
536 | WLAN_CIPHER_SUITE_WEP40, | |
537 | WLAN_CIPHER_SUITE_WEP104, | |
538 | WLAN_CIPHER_SUITE_TKIP, | |
539 | WLAN_CIPHER_SUITE_CCMP, | |
540 | ||
541 | /* keep last -- depends on hw flags! */ | |
542 | WLAN_CIPHER_SUITE_AES_CMAC | |
543 | }; | |
8318d78a JB |
544 | |
545 | /* | |
546 | * generic code guarantees at least one band, | |
547 | * set this very early because much code assumes | |
548 | * that hw.conf.channel is assigned | |
549 | */ | |
2a519311 | 550 | channels = 0; |
de95a54b | 551 | max_bitrates = 0; |
5ef2d41a | 552 | supp_ht = false; |
8318d78a JB |
553 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
554 | struct ieee80211_supported_band *sband; | |
555 | ||
556 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
557 | if (!sband) |
558 | continue; | |
559 | if (!local->oper_channel) { | |
8318d78a JB |
560 | /* init channel we're on */ |
561 | local->hw.conf.channel = | |
58905ca5 JB |
562 | local->oper_channel = &sband->channels[0]; |
563 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 564 | } |
de95a54b JB |
565 | channels += sband->n_channels; |
566 | ||
567 | if (max_bitrates < sband->n_bitrates) | |
568 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 569 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 570 | } |
f0706e82 | 571 | |
5ba63533 JB |
572 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
573 | sizeof(void *) * channels, GFP_KERNEL); | |
574 | if (!local->int_scan_req) | |
2a519311 JB |
575 | return -ENOMEM; |
576 | ||
f59ac048 LR |
577 | /* if low-level driver supports AP, we also support VLAN */ |
578 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) | |
579 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
580 | ||
581 | /* mac80211 always supports monitor */ | |
582 | local->hw.wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); | |
583 | ||
77965c97 JB |
584 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
585 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
586 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
587 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
588 | ||
ab13315a KV |
589 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
590 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
591 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
592 | ||
de95a54b JB |
593 | /* |
594 | * Calculate scan IE length -- we need this to alloc | |
595 | * memory and to subtract from the driver limit. It | |
596 | * includes the (extended) supported rates and HT | |
597 | * information -- SSID is the driver's responsibility. | |
598 | */ | |
599 | local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */ | |
5ef2d41a JB |
600 | if (supp_ht) |
601 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
602 | |
603 | if (!local->ops->hw_scan) { | |
604 | /* For hw_scan, driver needs to set these up. */ | |
605 | local->hw.wiphy->max_scan_ssids = 4; | |
606 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
607 | } | |
608 | ||
609 | /* | |
610 | * If the driver supports any scan IEs, then assume the | |
611 | * limit includes the IEs mac80211 will add, otherwise | |
612 | * leave it at zero and let the driver sort it out; we | |
613 | * still pass our IEs to the driver but userspace will | |
614 | * not be allowed to in that case. | |
615 | */ | |
616 | if (local->hw.wiphy->max_scan_ie_len) | |
617 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
618 | ||
25e47c18 JB |
619 | local->hw.wiphy->cipher_suites = cipher_suites; |
620 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
621 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
622 | local->hw.wiphy->n_cipher_suites--; | |
623 | ||
f0706e82 JB |
624 | result = wiphy_register(local->hw.wiphy); |
625 | if (result < 0) | |
2a519311 | 626 | goto fail_wiphy_register; |
f0706e82 | 627 | |
e2530083 JB |
628 | /* |
629 | * We use the number of queues for feature tests (QoS, HT) internally | |
630 | * so restrict them appropriately. | |
631 | */ | |
e2530083 JB |
632 | if (hw->queues > IEEE80211_MAX_QUEUES) |
633 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 634 | |
42935eca | 635 | local->workqueue = |
30d3ef41 | 636 | create_singlethread_workqueue(wiphy_name(local->hw.wiphy)); |
42935eca | 637 | if (!local->workqueue) { |
f0706e82 JB |
638 | result = -ENOMEM; |
639 | goto fail_workqueue; | |
640 | } | |
641 | ||
b306f453 JB |
642 | /* |
643 | * The hardware needs headroom for sending the frame, | |
644 | * and we need some headroom for passing the frame to monitor | |
645 | * interfaces, but never both at the same time. | |
646 | */ | |
d24deb25 GW |
647 | BUILD_BUG_ON(IEEE80211_TX_STATUS_HEADROOM != |
648 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
33ccad35 JB |
649 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
650 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 651 | |
e9f207f0 JB |
652 | debugfs_hw_add(local); |
653 | ||
b446918b HS |
654 | /* |
655 | * if the driver doesn't specify a max listen interval we | |
656 | * use 5 which should be a safe default | |
657 | */ | |
ea95bba4 | 658 | if (local->hw.max_listen_interval == 0) |
b446918b | 659 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
660 | |
661 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
662 | ||
ff616381 | 663 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 664 | |
f0706e82 JB |
665 | result = sta_info_start(local); |
666 | if (result < 0) | |
667 | goto fail_sta_info; | |
668 | ||
d4c4a9a1 | 669 | result = ieee80211_wep_init(local); |
3473187d | 670 | if (result < 0) |
d4c4a9a1 AJ |
671 | printk(KERN_DEBUG "%s: Failed to initialize wep: %d\n", |
672 | wiphy_name(local->hw.wiphy), result); | |
d4c4a9a1 | 673 | |
f0706e82 | 674 | rtnl_lock(); |
f0706e82 | 675 | |
830f9038 JB |
676 | result = ieee80211_init_rate_ctrl_alg(local, |
677 | hw->rate_control_algorithm); | |
f0706e82 JB |
678 | if (result < 0) { |
679 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 680 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
681 | goto fail_rate; |
682 | } | |
683 | ||
8dffff21 JB |
684 | /* add one default STA interface if supported */ |
685 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
686 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
687 | NL80211_IFTYPE_STATION, NULL); | |
688 | if (result) | |
689 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
690 | wiphy_name(local->hw.wiphy)); | |
691 | } | |
f0706e82 | 692 | |
f0706e82 JB |
693 | rtnl_unlock(); |
694 | ||
695 | ieee80211_led_init(local); | |
696 | ||
10f644a4 JB |
697 | local->network_latency_notifier.notifier_call = |
698 | ieee80211_max_network_latency; | |
699 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
700 | &local->network_latency_notifier); | |
10f644a4 JB |
701 | if (result) { |
702 | rtnl_lock(); | |
703 | goto fail_pm_qos; | |
704 | } | |
705 | ||
26b36cfe | 706 | #ifdef CONFIG_INET |
2b2c009e JO |
707 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
708 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
709 | if (result) | |
710 | goto fail_ifa; | |
26b36cfe | 711 | #endif |
2b2c009e | 712 | |
4e6cbfd0 JL |
713 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
714 | local->hw.napi_weight); | |
715 | ||
f0706e82 JB |
716 | return 0; |
717 | ||
93c08c32 | 718 | #ifdef CONFIG_INET |
2b2c009e JO |
719 | fail_ifa: |
720 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
721 | &local->network_latency_notifier); | |
722 | rtnl_lock(); | |
93c08c32 | 723 | #endif |
10f644a4 JB |
724 | fail_pm_qos: |
725 | ieee80211_led_exit(local); | |
726 | ieee80211_remove_interfaces(local); | |
10f644a4 | 727 | fail_rate: |
f0706e82 | 728 | rtnl_unlock(); |
d4c4a9a1 | 729 | ieee80211_wep_free(local); |
f0706e82 | 730 | sta_info_stop(local); |
10f644a4 | 731 | fail_sta_info: |
42935eca | 732 | destroy_workqueue(local->workqueue); |
10f644a4 | 733 | fail_workqueue: |
f0706e82 | 734 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 735 | fail_wiphy_register: |
11ba964d | 736 | kfree(local->int_scan_req); |
f0706e82 JB |
737 | return result; |
738 | } | |
739 | EXPORT_SYMBOL(ieee80211_register_hw); | |
740 | ||
f0706e82 JB |
741 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
742 | { | |
743 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
744 | |
745 | tasklet_kill(&local->tx_pending_tasklet); | |
746 | tasklet_kill(&local->tasklet); | |
747 | ||
10f644a4 JB |
748 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
749 | &local->network_latency_notifier); | |
26b36cfe | 750 | #ifdef CONFIG_INET |
2b2c009e | 751 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 752 | #endif |
10f644a4 | 753 | |
f0706e82 JB |
754 | rtnl_lock(); |
755 | ||
79010420 JB |
756 | /* |
757 | * At this point, interface list manipulations are fine | |
758 | * because the driver cannot be handing us frames any | |
759 | * more and the tasklet is killed. | |
760 | */ | |
75636525 | 761 | ieee80211_remove_interfaces(local); |
5b2812e9 | 762 | |
f0706e82 JB |
763 | rtnl_unlock(); |
764 | ||
3ac64bee JB |
765 | cancel_work_sync(&local->reconfig_filter); |
766 | ||
f0706e82 JB |
767 | ieee80211_clear_tx_pending(local); |
768 | sta_info_stop(local); | |
769 | rate_control_deinitialize(local); | |
770 | ||
f64f9e71 JP |
771 | if (skb_queue_len(&local->skb_queue) || |
772 | skb_queue_len(&local->skb_queue_unreliable)) | |
f0706e82 | 773 | printk(KERN_WARNING "%s: skb_queue not empty\n", |
dd1cd4c6 | 774 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
775 | skb_queue_purge(&local->skb_queue); |
776 | skb_queue_purge(&local->skb_queue_unreliable); | |
777 | ||
42935eca | 778 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
779 | wiphy_unregister(local->hw.wiphy); |
780 | ieee80211_wep_free(local); | |
781 | ieee80211_led_exit(local); | |
5ba63533 | 782 | kfree(local->int_scan_req); |
f0706e82 JB |
783 | } |
784 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
785 | ||
786 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
787 | { | |
788 | struct ieee80211_local *local = hw_to_local(hw); | |
789 | ||
c771c9d8 | 790 | mutex_destroy(&local->iflist_mtx); |
f3b85252 | 791 | mutex_destroy(&local->scan_mtx); |
c771c9d8 | 792 | |
f0706e82 JB |
793 | wiphy_free(local->hw.wiphy); |
794 | } | |
795 | EXPORT_SYMBOL(ieee80211_free_hw); | |
796 | ||
f0706e82 JB |
797 | static int __init ieee80211_init(void) |
798 | { | |
799 | struct sk_buff *skb; | |
800 | int ret; | |
801 | ||
e039fa4a JB |
802 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
803 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 804 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 805 | |
cccf129f FF |
806 | ret = rc80211_minstrel_init(); |
807 | if (ret) | |
808 | return ret; | |
809 | ||
ec8aa669 FF |
810 | ret = rc80211_minstrel_ht_init(); |
811 | if (ret) | |
812 | goto err_minstrel; | |
813 | ||
4b475898 | 814 | ret = rc80211_pid_init(); |
ad018375 | 815 | if (ret) |
47846c9b | 816 | goto err_pid; |
f0706e82 | 817 | |
47846c9b JB |
818 | ret = ieee80211_iface_init(); |
819 | if (ret) | |
820 | goto err_netdev; | |
e9f207f0 | 821 | |
f0706e82 | 822 | return 0; |
47846c9b JB |
823 | err_netdev: |
824 | rc80211_pid_exit(); | |
825 | err_pid: | |
ec8aa669 FF |
826 | rc80211_minstrel_ht_exit(); |
827 | err_minstrel: | |
47846c9b JB |
828 | rc80211_minstrel_exit(); |
829 | ||
830 | return ret; | |
f0706e82 JB |
831 | } |
832 | ||
f0706e82 JB |
833 | static void __exit ieee80211_exit(void) |
834 | { | |
4b475898 | 835 | rc80211_pid_exit(); |
ec8aa669 | 836 | rc80211_minstrel_ht_exit(); |
cccf129f | 837 | rc80211_minstrel_exit(); |
ac71c691 | 838 | |
3b96766f JB |
839 | /* |
840 | * For key todo, it'll be empty by now but the work | |
841 | * might still be scheduled. | |
842 | */ | |
843 | flush_scheduled_work(); | |
844 | ||
f7a92144 LCC |
845 | if (mesh_allocated) |
846 | ieee80211s_stop(); | |
902acc78 | 847 | |
47846c9b | 848 | ieee80211_iface_exit(); |
f0706e82 JB |
849 | } |
850 | ||
851 | ||
ca9938fe | 852 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
853 | module_exit(ieee80211_exit); |
854 | ||
855 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
856 | MODULE_LICENSE("GPL"); |