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 | |
681c4d07 JB |
36 | static struct lock_class_key ieee80211_rx_skb_queue_class; |
37 | ||
0d143fe1 | 38 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 39 | { |
3ac64bee | 40 | u64 mc; |
4150c572 JB |
41 | unsigned int changed_flags; |
42 | unsigned int new_flags = 0; | |
43 | ||
53918994 | 44 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
45 | new_flags |= FIF_PROMISC_IN_BSS; |
46 | ||
53918994 | 47 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
48 | new_flags |= FIF_ALLMULTI; |
49 | ||
3ac64bee | 50 | if (local->monitors || local->scanning) |
8cc9a739 MW |
51 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
52 | ||
7be5086d JB |
53 | if (local->fif_probe_req || local->probe_req_reg) |
54 | new_flags |= FIF_PROBE_REQ; | |
55 | ||
8cc9a739 MW |
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 | ||
b23b025f BG |
95 | /* |
96 | * Returns true if we are logically configured to be on | |
97 | * the operating channel AND the hardware-conf is currently | |
98 | * configured on the operating channel. Compares channel-type | |
99 | * as well. | |
100 | */ | |
101 | bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local) | |
102 | { | |
103 | struct ieee80211_channel *chan, *scan_chan; | |
104 | enum nl80211_channel_type channel_type; | |
105 | ||
106 | /* This logic needs to match logic in ieee80211_hw_config */ | |
107 | if (local->scan_channel) { | |
108 | chan = local->scan_channel; | |
4f2e9d91 BG |
109 | /* If scanning on oper channel, use whatever channel-type |
110 | * is currently in use. | |
111 | */ | |
112 | if (chan == local->oper_channel) | |
113 | channel_type = local->_oper_channel_type; | |
114 | else | |
115 | channel_type = NL80211_CHAN_NO_HT; | |
b23b025f BG |
116 | } else if (local->tmp_channel) { |
117 | chan = scan_chan = local->tmp_channel; | |
118 | channel_type = local->tmp_channel_type; | |
119 | } else { | |
120 | chan = local->oper_channel; | |
121 | channel_type = local->_oper_channel_type; | |
122 | } | |
123 | ||
124 | if (chan != local->oper_channel || | |
125 | channel_type != local->_oper_channel_type) | |
126 | return false; | |
127 | ||
128 | /* Check current hardware-config against oper_channel. */ | |
129 | if ((local->oper_channel != local->hw.conf.channel) || | |
130 | (local->_oper_channel_type != local->hw.conf.channel_type)) | |
131 | return false; | |
132 | ||
133 | return true; | |
134 | } | |
135 | ||
e8975581 | 136 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 137 | { |
58905ca5 | 138 | struct ieee80211_channel *chan, *scan_chan; |
b2c258fb | 139 | int ret = 0; |
e8975581 | 140 | int power; |
094d05dc | 141 | enum nl80211_channel_type channel_type; |
ffd2778b | 142 | u32 offchannel_flag; |
f0706e82 | 143 | |
cb121bad JB |
144 | might_sleep(); |
145 | ||
58905ca5 JB |
146 | scan_chan = local->scan_channel; |
147 | ||
b23b025f BG |
148 | /* If this off-channel logic ever changes, ieee80211_on_oper_channel |
149 | * may need to change as well. | |
150 | */ | |
ffd2778b | 151 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
58905ca5 JB |
152 | if (scan_chan) { |
153 | chan = scan_chan; | |
4f2e9d91 BG |
154 | /* If scanning on oper channel, use whatever channel-type |
155 | * is currently in use. | |
156 | */ | |
157 | if (chan == local->oper_channel) | |
158 | channel_type = local->_oper_channel_type; | |
159 | else | |
160 | channel_type = NL80211_CHAN_NO_HT; | |
b23b025f | 161 | } else if (local->tmp_channel) { |
b8bc4b0a JB |
162 | chan = scan_chan = local->tmp_channel; |
163 | channel_type = local->tmp_channel_type; | |
72bdcf34 | 164 | } else { |
b2c258fb | 165 | chan = local->oper_channel; |
0aaffa9b | 166 | channel_type = local->_oper_channel_type; |
72bdcf34 | 167 | } |
b23b025f BG |
168 | |
169 | if (chan != local->oper_channel || | |
170 | channel_type != local->_oper_channel_type) | |
171 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; | |
172 | else | |
173 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
174 | ||
ffd2778b | 175 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 176 | |
ffd2778b | 177 | if (offchannel_flag || chan != local->hw.conf.channel || |
4797938c | 178 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 179 | local->hw.conf.channel = chan; |
4797938c | 180 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
181 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
182 | } | |
8318d78a | 183 | |
0f78231b JB |
184 | if (!conf_is_ht(&local->hw.conf)) { |
185 | /* | |
186 | * mac80211.h documents that this is only valid | |
187 | * when the channel is set to an HT type, and | |
188 | * that otherwise STATIC is used. | |
189 | */ | |
190 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
191 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
192 | local->hw.conf.smps_mode = local->smps_mode; | |
193 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
194 | } | |
195 | ||
59bdf3b0 BG |
196 | if ((local->scanning & SCAN_SW_SCANNING) || |
197 | (local->scanning & SCAN_HW_SCANNING)) | |
e8975581 | 198 | power = chan->max_power; |
8318d78a | 199 | else |
a8302de9 VT |
200 | power = local->power_constr_level ? |
201 | (chan->max_power - local->power_constr_level) : | |
202 | chan->max_power; | |
203 | ||
47afbaf5 | 204 | if (local->user_power_level >= 0) |
a8302de9 VT |
205 | power = min(power, local->user_power_level); |
206 | ||
e8975581 JB |
207 | if (local->hw.conf.power_level != power) { |
208 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
209 | local->hw.conf.power_level = power; | |
210 | } | |
b2c258fb | 211 | |
e8975581 | 212 | if (changed && local->open_count) { |
24487981 | 213 | ret = drv_config(local, changed); |
d73782fd | 214 | /* |
447107fb | 215 | * Goal: |
d73782fd JB |
216 | * HW reconfiguration should never fail, the driver has told |
217 | * us what it can support so it should live up to that promise. | |
447107fb RC |
218 | * |
219 | * Current status: | |
220 | * rfkill is not integrated with mac80211 and a | |
221 | * configuration command can thus fail if hardware rfkill | |
222 | * is enabled | |
223 | * | |
224 | * FIXME: integrate rfkill with mac80211 and then add this | |
225 | * WARN_ON() back | |
226 | * | |
d73782fd | 227 | */ |
447107fb | 228 | /* WARN_ON(ret); */ |
d73782fd | 229 | } |
f0706e82 | 230 | |
b2c258fb JB |
231 | return ret; |
232 | } | |
f0706e82 | 233 | |
471b3efd JB |
234 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
235 | u32 changed) | |
d9430a32 | 236 | { |
471b3efd | 237 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 238 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
239 | |
240 | if (!changed) | |
241 | return; | |
242 | ||
9cef8737 JB |
243 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
244 | /* | |
245 | * While not associated, claim a BSSID of all-zeroes | |
246 | * so that drivers don't do any weird things with the | |
247 | * BSSID at that time. | |
248 | */ | |
249 | if (sdata->vif.bss_conf.assoc) | |
250 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; | |
251 | else | |
252 | sdata->vif.bss_conf.bssid = zero; | |
253 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
2d0ddec5 JB |
254 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
255 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 256 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
1be7fe8d BJ |
257 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) |
258 | sdata->vif.bss_conf.bssid = NULL; | |
2d0ddec5 | 259 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
260 | sdata->vif.bss_conf.bssid = zero; |
261 | } else { | |
262 | WARN_ON(1); | |
263 | return; | |
264 | } | |
265 | ||
266 | switch (sdata->vif.type) { | |
267 | case NL80211_IFTYPE_AP: | |
268 | case NL80211_IFTYPE_ADHOC: | |
1be7fe8d | 269 | case NL80211_IFTYPE_WDS: |
2d0ddec5 JB |
270 | case NL80211_IFTYPE_MESH_POINT: |
271 | break; | |
272 | default: | |
273 | /* do not warn to simplify caller in scan.c */ | |
274 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
275 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
276 | return; | |
277 | break; | |
278 | } | |
279 | ||
280 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 281 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
b23b025f | 282 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { |
2d0ddec5 JB |
283 | sdata->vif.bss_conf.enable_beacon = false; |
284 | } else { | |
285 | /* | |
286 | * Beacon should be enabled, but AP mode must | |
287 | * check whether there is a beacon configured. | |
288 | */ | |
289 | switch (sdata->vif.type) { | |
290 | case NL80211_IFTYPE_AP: | |
291 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 292 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
293 | break; |
294 | case NL80211_IFTYPE_ADHOC: | |
295 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 296 | !!sdata->u.ibss.presp; |
2d0ddec5 | 297 | break; |
7659a193 | 298 | #ifdef CONFIG_MAC80211_MESH |
2d0ddec5 | 299 | case NL80211_IFTYPE_MESH_POINT: |
29cbe68c JB |
300 | sdata->vif.bss_conf.enable_beacon = |
301 | !!sdata->u.mesh.mesh_id_len; | |
2d0ddec5 | 302 | break; |
7659a193 | 303 | #endif |
2d0ddec5 JB |
304 | default: |
305 | /* not reached */ | |
306 | WARN_ON(1); | |
307 | break; | |
308 | } | |
309 | } | |
310 | } | |
311 | ||
12375ef9 | 312 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
313 | } |
314 | ||
f698d856 | 315 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 316 | { |
bda3933a JB |
317 | sdata->vif.bss_conf.use_cts_prot = false; |
318 | sdata->vif.bss_conf.use_short_preamble = false; | |
319 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
320 | return BSS_CHANGED_ERP_CTS_PROT | |
321 | BSS_CHANGED_ERP_PREAMBLE | | |
322 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
323 | } |
324 | ||
f0706e82 JB |
325 | static void ieee80211_tasklet_handler(unsigned long data) |
326 | { | |
327 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
37fbd908 JB |
328 | struct sta_info *sta, *tmp; |
329 | struct skb_eosp_msg_data *eosp_data; | |
f0706e82 | 330 | struct sk_buff *skb; |
f0706e82 JB |
331 | |
332 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
333 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
334 | switch (skb->pkt_type) { | |
335 | case IEEE80211_RX_MSG: | |
51fb61e7 | 336 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
337 | * netstack. */ |
338 | skb->pkt_type = 0; | |
f1d58c25 | 339 | ieee80211_rx(local_to_hw(local), skb); |
f0706e82 JB |
340 | break; |
341 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 342 | skb->pkt_type = 0; |
e039fa4a | 343 | ieee80211_tx_status(local_to_hw(local), skb); |
f0706e82 | 344 | break; |
37fbd908 JB |
345 | case IEEE80211_EOSP_MSG: |
346 | eosp_data = (void *)skb->cb; | |
347 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
348 | /* skip wrong virtual interface */ | |
349 | if (memcmp(eosp_data->iface, | |
350 | sta->sdata->vif.addr, ETH_ALEN)) | |
351 | continue; | |
352 | clear_sta_flag(sta, WLAN_STA_SP); | |
353 | break; | |
354 | } | |
355 | dev_kfree_skb(skb); | |
356 | break; | |
f4ea83dd | 357 | default: |
5e3f3089 LF |
358 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
359 | skb->pkt_type); | |
f0706e82 JB |
360 | dev_kfree_skb(skb); |
361 | break; | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
f2753ddb JB |
366 | static void ieee80211_restart_work(struct work_struct *work) |
367 | { | |
368 | struct ieee80211_local *local = | |
369 | container_of(work, struct ieee80211_local, restart_work); | |
370 | ||
bc86863d SG |
371 | /* wait for scan work complete */ |
372 | flush_workqueue(local->workqueue); | |
373 | ||
374 | mutex_lock(&local->mtx); | |
79f460ca LC |
375 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || |
376 | local->sched_scanning, | |
bc86863d SG |
377 | "%s called with hardware scan in progress\n", __func__); |
378 | mutex_unlock(&local->mtx); | |
379 | ||
f2753ddb | 380 | rtnl_lock(); |
4136c422 | 381 | ieee80211_scan_cancel(local); |
f2753ddb JB |
382 | ieee80211_reconfig(local); |
383 | rtnl_unlock(); | |
384 | } | |
385 | ||
386 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
387 | { | |
388 | struct ieee80211_local *local = hw_to_local(hw); | |
389 | ||
b5878a2d JB |
390 | trace_api_restart_hw(local); |
391 | ||
b196d031 MB |
392 | wiphy_info(hw->wiphy, |
393 | "Hardware restart was requested\n"); | |
394 | ||
18145c69 | 395 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
396 | ieee80211_stop_queues_by_reason(hw, |
397 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
398 | ||
399 | schedule_work(&local->restart_work); | |
400 | } | |
401 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
402 | ||
0f78231b JB |
403 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
404 | { | |
405 | struct ieee80211_local *local = | |
406 | container_of(work, struct ieee80211_local, recalc_smps); | |
407 | ||
408 | mutex_lock(&local->iflist_mtx); | |
025e6be2 | 409 | ieee80211_recalc_smps(local); |
0f78231b JB |
410 | mutex_unlock(&local->iflist_mtx); |
411 | } | |
412 | ||
26b36cfe | 413 | #ifdef CONFIG_INET |
2b2c009e JO |
414 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
415 | unsigned long data, void *arg) | |
416 | { | |
417 | struct in_ifaddr *ifa = arg; | |
418 | struct ieee80211_local *local = | |
419 | container_of(nb, struct ieee80211_local, | |
420 | ifa_notifier); | |
421 | struct net_device *ndev = ifa->ifa_dev->dev; | |
422 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 423 | struct in_device *idev; |
2b2c009e | 424 | struct ieee80211_sub_if_data *sdata; |
68542962 | 425 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 426 | struct ieee80211_if_managed *ifmgd; |
68542962 | 427 | int c = 0; |
2b2c009e JO |
428 | |
429 | /* Make sure it's our interface that got changed */ | |
430 | if (!wdev) | |
431 | return NOTIFY_DONE; | |
432 | ||
433 | if (wdev->wiphy != local->hw.wiphy) | |
434 | return NOTIFY_DONE; | |
435 | ||
2b2c009e | 436 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 437 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e | 438 | |
26a58456 JB |
439 | if (!ieee80211_sdata_running(sdata)) |
440 | return NOTIFY_DONE; | |
441 | ||
2b2c009e JO |
442 | /* ARP filtering is only supported in managed mode */ |
443 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
444 | return NOTIFY_DONE; | |
445 | ||
95ae6b22 | 446 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
447 | if (!idev) |
448 | return NOTIFY_DONE; | |
449 | ||
2b2c009e JO |
450 | ifmgd = &sdata->u.mgd; |
451 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
452 | |
453 | /* Copy the addresses to the bss_conf list */ | |
454 | ifa = idev->ifa_list; | |
455 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
456 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
457 | ifa = ifa->ifa_next; | |
458 | c++; | |
459 | } | |
460 | ||
461 | /* If not all addresses fit the list, disable filtering */ | |
462 | if (ifa) { | |
463 | sdata->arp_filter_state = false; | |
464 | c = 0; | |
465 | } else { | |
466 | sdata->arp_filter_state = true; | |
467 | } | |
468 | bss_conf->arp_addr_cnt = c; | |
469 | ||
470 | /* Configure driver only if associated */ | |
471 | if (ifmgd->associated) { | |
472 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
473 | ieee80211_bss_info_change_notify(sdata, | |
474 | BSS_CHANGED_ARP_FILTER); | |
475 | } | |
476 | ||
2b2c009e JO |
477 | mutex_unlock(&ifmgd->mtx); |
478 | ||
479 | return NOTIFY_DONE; | |
480 | } | |
26b36cfe | 481 | #endif |
2b2c009e | 482 | |
4e6cbfd0 JL |
483 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
484 | { | |
485 | struct ieee80211_local *local = | |
486 | container_of(napi, struct ieee80211_local, napi); | |
487 | ||
488 | return local->ops->napi_poll(&local->hw, budget); | |
489 | } | |
490 | ||
491 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
492 | { | |
493 | struct ieee80211_local *local = hw_to_local(hw); | |
494 | ||
495 | napi_schedule(&local->napi); | |
496 | } | |
497 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
498 | ||
499 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
500 | { | |
501 | struct ieee80211_local *local = hw_to_local(hw); | |
502 | ||
503 | napi_complete(&local->napi); | |
504 | } | |
505 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
506 | ||
2e161f78 JB |
507 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
508 | static const struct ieee80211_txrx_stypes | |
509 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
510 | [NL80211_IFTYPE_ADHOC] = { | |
511 | .tx = 0xffff, | |
512 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
513 | }, | |
514 | [NL80211_IFTYPE_STATION] = { | |
515 | .tx = 0xffff, | |
516 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
517 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
518 | }, | |
519 | [NL80211_IFTYPE_AP] = { | |
520 | .tx = 0xffff, | |
521 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
522 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
523 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
524 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
525 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
526 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
527 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
528 | }, | |
529 | [NL80211_IFTYPE_AP_VLAN] = { | |
530 | /* copy AP */ | |
531 | .tx = 0xffff, | |
532 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
533 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
534 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
535 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
536 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
537 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
538 | BIT(IEEE80211_STYPE_ACTION >> 4), |
539 | }, | |
540 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
541 | .tx = 0xffff, | |
542 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
543 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
544 | }, | |
545 | [NL80211_IFTYPE_P2P_GO] = { | |
546 | .tx = 0xffff, | |
547 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
548 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
549 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
550 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
551 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
552 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
553 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
554 | }, | |
c7108a71 JC |
555 | [NL80211_IFTYPE_MESH_POINT] = { |
556 | .tx = 0xffff, | |
71839121 JC |
557 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
558 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
559 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 560 | }, |
2e161f78 JB |
561 | }; |
562 | ||
f0706e82 JB |
563 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
564 | const struct ieee80211_ops *ops) | |
565 | { | |
f0706e82 | 566 | struct ieee80211_local *local; |
96f5e66e | 567 | int priv_size, i; |
f0706e82 JB |
568 | struct wiphy *wiphy; |
569 | ||
570 | /* Ensure 32-byte alignment of our private data and hw private data. | |
571 | * We use the wiphy priv data for both our ieee80211_local and for | |
572 | * the driver's private data | |
573 | * | |
574 | * In memory it'll be like this: | |
575 | * | |
576 | * +-------------------------+ | |
577 | * | struct wiphy | | |
578 | * +-------------------------+ | |
579 | * | struct ieee80211_local | | |
580 | * +-------------------------+ | |
581 | * | driver's private data | | |
582 | * +-------------------------+ | |
583 | * | |
584 | */ | |
1ce8e7b5 | 585 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
586 | |
587 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
588 | ||
589 | if (!wiphy) | |
590 | return NULL; | |
591 | ||
2e161f78 JB |
592 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
593 | ||
207aba60 JB |
594 | wiphy->privid = mac80211_wiphy_privid; |
595 | ||
9bc383de JB |
596 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
597 | WIPHY_FLAG_4ADDR_AP | | |
f0dc7999 | 598 | WIPHY_FLAG_4ADDR_STATION; |
207aba60 JB |
599 | |
600 | if (!ops->set_key) | |
601 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 602 | |
0c1ad2ca | 603 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
604 | |
605 | local = wiphy_priv(wiphy); | |
de95a54b | 606 | |
f0706e82 JB |
607 | local->hw.wiphy = wiphy; |
608 | ||
1ce8e7b5 | 609 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 610 | |
4480f15c | 611 | BUG_ON(!ops->tx); |
4150c572 JB |
612 | BUG_ON(!ops->start); |
613 | BUG_ON(!ops->stop); | |
4480f15c JB |
614 | BUG_ON(!ops->config); |
615 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
616 | BUG_ON(!ops->remove_interface); |
617 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
618 | local->ops = ops; |
619 | ||
e6a9854b JB |
620 | /* set up some defaults */ |
621 | local->hw.queues = 1; | |
622 | local->hw.max_rates = 1; | |
78be49ec | 623 | local->hw.max_report_rates = 0; |
df6ba5d8 | 624 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 625 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
b9a5f8ca JM |
626 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
627 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 628 | local->user_power_level = -1; |
50ae0cf1 KV |
629 | local->uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
630 | local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
f0706e82 | 631 | |
79010420 | 632 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
633 | |
634 | __hw_addr_init(&local->mc_list); | |
635 | ||
c771c9d8 | 636 | mutex_init(&local->iflist_mtx); |
a1699b75 | 637 | mutex_init(&local->mtx); |
f0706e82 | 638 | |
ad0e2b5a | 639 | mutex_init(&local->key_mtx); |
3b8d81e0 | 640 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
641 | spin_lock_init(&local->queue_stop_reason_lock); |
642 | ||
681c4d07 JB |
643 | /* |
644 | * The rx_skb_queue is only accessed from tasklets, | |
645 | * but other SKB queues are used from within IRQ | |
646 | * context. Therefore, this one needs a different | |
647 | * locking class so our direct, non-irq-safe use of | |
648 | * the queue's lock doesn't throw lockdep warnings. | |
649 | */ | |
650 | skb_queue_head_init_class(&local->rx_skb_queue, | |
651 | &ieee80211_rx_skb_queue_class); | |
24a8fdad | 652 | |
c2b13452 | 653 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 654 | |
af6b6374 JB |
655 | ieee80211_work_init(local); |
656 | ||
f2753ddb JB |
657 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
658 | ||
3ac64bee | 659 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
660 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
661 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 662 | |
520eb820 KV |
663 | INIT_WORK(&local->dynamic_ps_enable_work, |
664 | ieee80211_dynamic_ps_enable_work); | |
665 | INIT_WORK(&local->dynamic_ps_disable_work, | |
666 | ieee80211_dynamic_ps_disable_work); | |
667 | setup_timer(&local->dynamic_ps_timer, | |
668 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
669 | ||
85a9994a LC |
670 | INIT_WORK(&local->sched_scan_stopped_work, |
671 | ieee80211_sched_scan_stopped_work); | |
672 | ||
f0706e82 JB |
673 | sta_info_init(local); |
674 | ||
a6a67db2 | 675 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 676 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
677 | atomic_set(&local->agg_queue_stop[i], 0); |
678 | } | |
f0706e82 JB |
679 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
680 | (unsigned long)local); | |
f0706e82 JB |
681 | |
682 | tasklet_init(&local->tasklet, | |
683 | ieee80211_tasklet_handler, | |
684 | (unsigned long) local); | |
f0706e82 JB |
685 | |
686 | skb_queue_head_init(&local->skb_queue); | |
687 | skb_queue_head_init(&local->skb_queue_unreliable); | |
688 | ||
4e6cbfd0 JL |
689 | /* init dummy netdev for use w/ NAPI */ |
690 | init_dummy_netdev(&local->napi_dev); | |
691 | ||
fe67c913 JB |
692 | ieee80211_led_names(local); |
693 | ||
21f83589 JB |
694 | ieee80211_hw_roc_setup(local); |
695 | ||
f0706e82 JB |
696 | return local_to_hw(local); |
697 | } | |
698 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
699 | ||
700 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
701 | { | |
702 | struct ieee80211_local *local = hw_to_local(hw); | |
7527a782 | 703 | int result, i; |
8318d78a | 704 | enum ieee80211_band band; |
be4a4b6a | 705 | int channels, max_bitrates; |
5ef2d41a | 706 | bool supp_ht; |
25e47c18 | 707 | static const u32 cipher_suites[] = { |
5daa8a8e | 708 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
709 | WLAN_CIPHER_SUITE_WEP40, |
710 | WLAN_CIPHER_SUITE_WEP104, | |
711 | WLAN_CIPHER_SUITE_TKIP, | |
712 | WLAN_CIPHER_SUITE_CCMP, | |
713 | ||
714 | /* keep last -- depends on hw flags! */ | |
715 | WLAN_CIPHER_SUITE_AES_CMAC | |
716 | }; | |
8318d78a | 717 | |
38bb3e9d LF |
718 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) |
719 | #ifdef CONFIG_PM | |
720 | && (!local->ops->suspend || !local->ops->resume) | |
721 | #endif | |
722 | ) | |
eecc4800 JB |
723 | return -EINVAL; |
724 | ||
78be49ec HS |
725 | if (hw->max_report_rates == 0) |
726 | hw->max_report_rates = hw->max_rates; | |
727 | ||
8318d78a JB |
728 | /* |
729 | * generic code guarantees at least one band, | |
730 | * set this very early because much code assumes | |
731 | * that hw.conf.channel is assigned | |
732 | */ | |
2a519311 | 733 | channels = 0; |
de95a54b | 734 | max_bitrates = 0; |
5ef2d41a | 735 | supp_ht = false; |
8318d78a JB |
736 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
737 | struct ieee80211_supported_band *sband; | |
738 | ||
739 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
740 | if (!sband) |
741 | continue; | |
742 | if (!local->oper_channel) { | |
8318d78a JB |
743 | /* init channel we're on */ |
744 | local->hw.conf.channel = | |
58905ca5 JB |
745 | local->oper_channel = &sband->channels[0]; |
746 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 747 | } |
de95a54b JB |
748 | channels += sband->n_channels; |
749 | ||
750 | if (max_bitrates < sband->n_bitrates) | |
751 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 752 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 753 | } |
f0706e82 | 754 | |
5ba63533 JB |
755 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
756 | sizeof(void *) * channels, GFP_KERNEL); | |
757 | if (!local->int_scan_req) | |
2a519311 JB |
758 | return -ENOMEM; |
759 | ||
f59ac048 | 760 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
761 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
762 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
763 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
764 | } | |
f59ac048 LR |
765 | |
766 | /* mac80211 always supports monitor */ | |
7527a782 JB |
767 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
768 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
769 | ||
8e621fc9 JB |
770 | /* |
771 | * mac80211 doesn't support more than 1 channel, and also not more | |
772 | * than one IBSS interface | |
773 | */ | |
774 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { | |
775 | const struct ieee80211_iface_combination *c; | |
776 | int j; | |
777 | ||
778 | c = &hw->wiphy->iface_combinations[i]; | |
779 | ||
780 | if (c->num_different_channels > 1) | |
7527a782 | 781 | return -EINVAL; |
f59ac048 | 782 | |
8e621fc9 JB |
783 | for (j = 0; j < c->n_limits; j++) |
784 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
785 | c->limits[j].max > 1) | |
786 | return -EINVAL; | |
787 | } | |
788 | ||
5eb5a52d JB |
789 | #ifndef CONFIG_MAC80211_MESH |
790 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
791 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
792 | #endif | |
793 | ||
1570ca59 JC |
794 | /* if the underlying driver supports mesh, mac80211 will (at least) |
795 | * provide routing of mesh authentication frames to userspace */ | |
796 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
797 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
798 | ||
a621fa4d JB |
799 | /* mac80211 supports control port protocol changing */ |
800 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
801 | ||
77965c97 JB |
802 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
803 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
804 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
805 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
806 | ||
ab13315a KV |
807 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
808 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
809 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
810 | ||
de95a54b JB |
811 | /* |
812 | * Calculate scan IE length -- we need this to alloc | |
813 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 814 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
815 | * information -- SSID is the driver's responsibility. |
816 | */ | |
dc9f48ce JM |
817 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
818 | 3 /* DS Params */; | |
5ef2d41a JB |
819 | if (supp_ht) |
820 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
821 | |
822 | if (!local->ops->hw_scan) { | |
823 | /* For hw_scan, driver needs to set these up. */ | |
824 | local->hw.wiphy->max_scan_ssids = 4; | |
825 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
826 | } | |
827 | ||
828 | /* | |
829 | * If the driver supports any scan IEs, then assume the | |
830 | * limit includes the IEs mac80211 will add, otherwise | |
831 | * leave it at zero and let the driver sort it out; we | |
832 | * still pass our IEs to the driver but userspace will | |
833 | * not be allowed to in that case. | |
834 | */ | |
835 | if (local->hw.wiphy->max_scan_ie_len) | |
836 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
837 | ||
3ffc2a90 JB |
838 | /* Set up cipher suites unless driver already did */ |
839 | if (!local->hw.wiphy->cipher_suites) { | |
840 | local->hw.wiphy->cipher_suites = cipher_suites; | |
841 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
842 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
843 | local->hw.wiphy->n_cipher_suites--; | |
844 | } | |
5daa8a8e | 845 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
846 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
847 | local->hw.wiphy->cipher_suites += 2; | |
848 | local->hw.wiphy->n_cipher_suites -= 2; | |
849 | } else { | |
850 | u32 *suites; | |
851 | int r, w = 0; | |
852 | ||
853 | /* Filter out WEP */ | |
854 | ||
855 | suites = kmemdup( | |
856 | local->hw.wiphy->cipher_suites, | |
857 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
858 | GFP_KERNEL); | |
859 | if (!suites) | |
860 | return -ENOMEM; | |
861 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
862 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
863 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
864 | suite == WLAN_CIPHER_SUITE_WEP104) | |
865 | continue; | |
866 | suites[w++] = suite; | |
867 | } | |
868 | local->hw.wiphy->cipher_suites = suites; | |
869 | local->hw.wiphy->n_cipher_suites = w; | |
870 | local->wiphy_ciphers_allocated = true; | |
871 | } | |
5daa8a8e | 872 | } |
25e47c18 | 873 | |
21f83589 JB |
874 | if (!local->ops->remain_on_channel) |
875 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 876 | |
79f460ca LC |
877 | if (local->ops->sched_scan_start) |
878 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
879 | ||
dfe018bf AN |
880 | /* mac80211 based drivers don't support internal TDLS setup */ |
881 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
882 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
883 | ||
f0706e82 JB |
884 | result = wiphy_register(local->hw.wiphy); |
885 | if (result < 0) | |
2a519311 | 886 | goto fail_wiphy_register; |
f0706e82 | 887 | |
e2530083 JB |
888 | /* |
889 | * We use the number of queues for feature tests (QoS, HT) internally | |
890 | * so restrict them appropriately. | |
891 | */ | |
e2530083 JB |
892 | if (hw->queues > IEEE80211_MAX_QUEUES) |
893 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 894 | |
42935eca | 895 | local->workqueue = |
99b88a0e | 896 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 897 | if (!local->workqueue) { |
f0706e82 JB |
898 | result = -ENOMEM; |
899 | goto fail_workqueue; | |
900 | } | |
901 | ||
b306f453 JB |
902 | /* |
903 | * The hardware needs headroom for sending the frame, | |
904 | * and we need some headroom for passing the frame to monitor | |
905 | * interfaces, but never both at the same time. | |
906 | */ | |
33ccad35 | 907 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 908 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 909 | |
e9f207f0 JB |
910 | debugfs_hw_add(local); |
911 | ||
b446918b HS |
912 | /* |
913 | * if the driver doesn't specify a max listen interval we | |
914 | * use 5 which should be a safe default | |
915 | */ | |
ea95bba4 | 916 | if (local->hw.max_listen_interval == 0) |
b446918b | 917 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
918 | |
919 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
920 | ||
ff616381 | 921 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 922 | |
d4c4a9a1 | 923 | result = ieee80211_wep_init(local); |
3473187d | 924 | if (result < 0) |
0fb9a9ec JP |
925 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
926 | result); | |
d4c4a9a1 | 927 | |
f0706e82 | 928 | rtnl_lock(); |
f0706e82 | 929 | |
830f9038 JB |
930 | result = ieee80211_init_rate_ctrl_alg(local, |
931 | hw->rate_control_algorithm); | |
f0706e82 | 932 | if (result < 0) { |
0fb9a9ec JP |
933 | wiphy_debug(local->hw.wiphy, |
934 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
935 | goto fail_rate; |
936 | } | |
937 | ||
8dffff21 JB |
938 | /* add one default STA interface if supported */ |
939 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
940 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
941 | NL80211_IFTYPE_STATION, NULL); | |
942 | if (result) | |
0fb9a9ec JP |
943 | wiphy_warn(local->hw.wiphy, |
944 | "Failed to add default virtual iface\n"); | |
8dffff21 | 945 | } |
f0706e82 | 946 | |
f0706e82 JB |
947 | rtnl_unlock(); |
948 | ||
949 | ieee80211_led_init(local); | |
950 | ||
10f644a4 JB |
951 | local->network_latency_notifier.notifier_call = |
952 | ieee80211_max_network_latency; | |
953 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
954 | &local->network_latency_notifier); | |
10f644a4 JB |
955 | if (result) { |
956 | rtnl_lock(); | |
957 | goto fail_pm_qos; | |
958 | } | |
959 | ||
26b36cfe | 960 | #ifdef CONFIG_INET |
2b2c009e JO |
961 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
962 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
963 | if (result) | |
964 | goto fail_ifa; | |
26b36cfe | 965 | #endif |
2b2c009e | 966 | |
4e6cbfd0 JL |
967 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
968 | local->hw.napi_weight); | |
969 | ||
f0706e82 JB |
970 | return 0; |
971 | ||
93c08c32 | 972 | #ifdef CONFIG_INET |
2b2c009e JO |
973 | fail_ifa: |
974 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
975 | &local->network_latency_notifier); | |
976 | rtnl_lock(); | |
93c08c32 | 977 | #endif |
10f644a4 JB |
978 | fail_pm_qos: |
979 | ieee80211_led_exit(local); | |
980 | ieee80211_remove_interfaces(local); | |
10f644a4 | 981 | fail_rate: |
f0706e82 | 982 | rtnl_unlock(); |
d4c4a9a1 | 983 | ieee80211_wep_free(local); |
f0706e82 | 984 | sta_info_stop(local); |
42935eca | 985 | destroy_workqueue(local->workqueue); |
10f644a4 | 986 | fail_workqueue: |
f0706e82 | 987 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 988 | fail_wiphy_register: |
3ffc2a90 JB |
989 | if (local->wiphy_ciphers_allocated) |
990 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 991 | kfree(local->int_scan_req); |
f0706e82 JB |
992 | return result; |
993 | } | |
994 | EXPORT_SYMBOL(ieee80211_register_hw); | |
995 | ||
f0706e82 JB |
996 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
997 | { | |
998 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
999 | |
1000 | tasklet_kill(&local->tx_pending_tasklet); | |
1001 | tasklet_kill(&local->tasklet); | |
1002 | ||
10f644a4 JB |
1003 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
1004 | &local->network_latency_notifier); | |
26b36cfe | 1005 | #ifdef CONFIG_INET |
2b2c009e | 1006 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1007 | #endif |
10f644a4 | 1008 | |
f0706e82 JB |
1009 | rtnl_lock(); |
1010 | ||
79010420 JB |
1011 | /* |
1012 | * At this point, interface list manipulations are fine | |
1013 | * because the driver cannot be handing us frames any | |
1014 | * more and the tasklet is killed. | |
1015 | */ | |
75636525 | 1016 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1017 | |
f0706e82 JB |
1018 | rtnl_unlock(); |
1019 | ||
071249b1 JB |
1020 | /* |
1021 | * Now all work items will be gone, but the | |
1022 | * timer might still be armed, so delete it | |
1023 | */ | |
1024 | del_timer_sync(&local->work_timer); | |
1025 | ||
258086a4 | 1026 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
1027 | cancel_work_sync(&local->reconfig_filter); |
1028 | ||
f0706e82 | 1029 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1030 | rate_control_deinitialize(local); |
1031 | ||
f64f9e71 JP |
1032 | if (skb_queue_len(&local->skb_queue) || |
1033 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1034 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1035 | skb_queue_purge(&local->skb_queue); |
1036 | skb_queue_purge(&local->skb_queue_unreliable); | |
24a8fdad | 1037 | skb_queue_purge(&local->rx_skb_queue); |
f0706e82 | 1038 | |
42935eca | 1039 | destroy_workqueue(local->workqueue); |
f0706e82 | 1040 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1041 | sta_info_stop(local); |
f0706e82 JB |
1042 | ieee80211_wep_free(local); |
1043 | ieee80211_led_exit(local); | |
5ba63533 | 1044 | kfree(local->int_scan_req); |
f0706e82 JB |
1045 | } |
1046 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1047 | ||
1048 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1049 | { | |
1050 | struct ieee80211_local *local = hw_to_local(hw); | |
1051 | ||
c771c9d8 | 1052 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1053 | mutex_destroy(&local->mtx); |
c771c9d8 | 1054 | |
3ffc2a90 JB |
1055 | if (local->wiphy_ciphers_allocated) |
1056 | kfree(local->hw.wiphy->cipher_suites); | |
1057 | ||
f0706e82 JB |
1058 | wiphy_free(local->hw.wiphy); |
1059 | } | |
1060 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1061 | ||
f0706e82 JB |
1062 | static int __init ieee80211_init(void) |
1063 | { | |
1064 | struct sk_buff *skb; | |
1065 | int ret; | |
1066 | ||
e039fa4a JB |
1067 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1068 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1069 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1070 | |
cccf129f FF |
1071 | ret = rc80211_minstrel_init(); |
1072 | if (ret) | |
1073 | return ret; | |
1074 | ||
ec8aa669 FF |
1075 | ret = rc80211_minstrel_ht_init(); |
1076 | if (ret) | |
1077 | goto err_minstrel; | |
1078 | ||
4b475898 | 1079 | ret = rc80211_pid_init(); |
ad018375 | 1080 | if (ret) |
47846c9b | 1081 | goto err_pid; |
f0706e82 | 1082 | |
47846c9b JB |
1083 | ret = ieee80211_iface_init(); |
1084 | if (ret) | |
1085 | goto err_netdev; | |
e9f207f0 | 1086 | |
f0706e82 | 1087 | return 0; |
47846c9b JB |
1088 | err_netdev: |
1089 | rc80211_pid_exit(); | |
1090 | err_pid: | |
ec8aa669 FF |
1091 | rc80211_minstrel_ht_exit(); |
1092 | err_minstrel: | |
47846c9b JB |
1093 | rc80211_minstrel_exit(); |
1094 | ||
1095 | return ret; | |
f0706e82 JB |
1096 | } |
1097 | ||
f0706e82 JB |
1098 | static void __exit ieee80211_exit(void) |
1099 | { | |
4b475898 | 1100 | rc80211_pid_exit(); |
ec8aa669 | 1101 | rc80211_minstrel_ht_exit(); |
cccf129f | 1102 | rc80211_minstrel_exit(); |
ac71c691 | 1103 | |
f7a92144 LCC |
1104 | if (mesh_allocated) |
1105 | ieee80211s_stop(); | |
902acc78 | 1106 | |
47846c9b | 1107 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1108 | |
1109 | rcu_barrier(); | |
f0706e82 JB |
1110 | } |
1111 | ||
1112 | ||
ca9938fe | 1113 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1114 | module_exit(ieee80211_exit); |
1115 | ||
1116 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1117 | MODULE_LICENSE("GPL"); |