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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> |
e8db0be1 | 22 | #include <linux/pm_qos.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 | ||
8a690674 BG |
50 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
51 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) | |
8cc9a739 MW |
52 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
53 | ||
7be5086d JB |
54 | if (local->fif_probe_req || local->probe_req_reg) |
55 | new_flags |= FIF_PROBE_REQ; | |
56 | ||
8cc9a739 MW |
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 | { |
5e5202a4 | 98 | struct ieee80211_channel *chan; |
b2c258fb | 99 | int ret = 0; |
e8975581 | 100 | int power; |
094d05dc | 101 | enum nl80211_channel_type channel_type; |
ffd2778b | 102 | u32 offchannel_flag; |
f0706e82 | 103 | |
cb121bad JB |
104 | might_sleep(); |
105 | ||
ffd2778b | 106 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
5e5202a4 SG |
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 | 116 | } else if (local->tmp_channel) { |
5e5202a4 | 117 | chan = local->tmp_channel; |
b8bc4b0a | 118 | channel_type = local->tmp_channel_type; |
72bdcf34 | 119 | } else { |
b2c258fb | 120 | chan = local->oper_channel; |
0aaffa9b | 121 | channel_type = local->_oper_channel_type; |
72bdcf34 | 122 | } |
b23b025f BG |
123 | |
124 | if (chan != local->oper_channel || | |
125 | channel_type != local->_oper_channel_type) | |
126 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; | |
127 | else | |
128 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
129 | ||
ffd2778b | 130 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 131 | |
ffd2778b | 132 | if (offchannel_flag || chan != local->hw.conf.channel || |
4797938c | 133 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 134 | local->hw.conf.channel = chan; |
4797938c | 135 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
136 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
137 | } | |
8318d78a | 138 | |
0f78231b JB |
139 | if (!conf_is_ht(&local->hw.conf)) { |
140 | /* | |
141 | * mac80211.h documents that this is only valid | |
142 | * when the channel is set to an HT type, and | |
143 | * that otherwise STATIC is used. | |
144 | */ | |
145 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
146 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
147 | local->hw.conf.smps_mode = local->smps_mode; | |
148 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
149 | } | |
150 | ||
cd6c524e | 151 | if (test_bit(SCAN_SW_SCANNING, &local->scanning) || |
8a690674 | 152 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) || |
cd6c524e | 153 | test_bit(SCAN_HW_SCANNING, &local->scanning)) |
e8975581 | 154 | power = chan->max_power; |
8318d78a | 155 | else |
a8302de9 | 156 | power = local->power_constr_level ? |
a48b13ac HW |
157 | min(chan->max_power, |
158 | (chan->max_reg_power - local->power_constr_level)) : | |
a8302de9 VT |
159 | chan->max_power; |
160 | ||
47afbaf5 | 161 | if (local->user_power_level >= 0) |
a8302de9 VT |
162 | power = min(power, local->user_power_level); |
163 | ||
e8975581 JB |
164 | if (local->hw.conf.power_level != power) { |
165 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
166 | local->hw.conf.power_level = power; | |
167 | } | |
b2c258fb | 168 | |
e8975581 | 169 | if (changed && local->open_count) { |
24487981 | 170 | ret = drv_config(local, changed); |
d73782fd | 171 | /* |
447107fb | 172 | * Goal: |
d73782fd JB |
173 | * HW reconfiguration should never fail, the driver has told |
174 | * us what it can support so it should live up to that promise. | |
447107fb RC |
175 | * |
176 | * Current status: | |
177 | * rfkill is not integrated with mac80211 and a | |
178 | * configuration command can thus fail if hardware rfkill | |
179 | * is enabled | |
180 | * | |
181 | * FIXME: integrate rfkill with mac80211 and then add this | |
182 | * WARN_ON() back | |
183 | * | |
d73782fd | 184 | */ |
447107fb | 185 | /* WARN_ON(ret); */ |
d73782fd | 186 | } |
f0706e82 | 187 | |
b2c258fb JB |
188 | return ret; |
189 | } | |
f0706e82 | 190 | |
471b3efd JB |
191 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
192 | u32 changed) | |
d9430a32 | 193 | { |
471b3efd | 194 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 195 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
196 | |
197 | if (!changed) | |
198 | return; | |
199 | ||
9cef8737 | 200 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
66e67e41 | 201 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9cef8737 | 202 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
2d0ddec5 JB |
203 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
204 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 205 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
1be7fe8d BJ |
206 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) |
207 | sdata->vif.bss_conf.bssid = NULL; | |
2d0ddec5 | 208 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 | 209 | sdata->vif.bss_conf.bssid = zero; |
f142c6b9 JB |
210 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
211 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
212 | WARN_ONCE(changed & ~(BSS_CHANGED_IDLE), | |
213 | "P2P Device BSS changed %#x", changed); | |
2d0ddec5 JB |
214 | } else { |
215 | WARN_ON(1); | |
216 | return; | |
217 | } | |
218 | ||
219 | switch (sdata->vif.type) { | |
220 | case NL80211_IFTYPE_AP: | |
221 | case NL80211_IFTYPE_ADHOC: | |
1be7fe8d | 222 | case NL80211_IFTYPE_WDS: |
2d0ddec5 JB |
223 | case NL80211_IFTYPE_MESH_POINT: |
224 | break; | |
225 | default: | |
226 | /* do not warn to simplify caller in scan.c */ | |
227 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
228 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
229 | return; | |
230 | break; | |
231 | } | |
232 | ||
233 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 234 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
b23b025f | 235 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { |
2d0ddec5 JB |
236 | sdata->vif.bss_conf.enable_beacon = false; |
237 | } else { | |
238 | /* | |
239 | * Beacon should be enabled, but AP mode must | |
240 | * check whether there is a beacon configured. | |
241 | */ | |
242 | switch (sdata->vif.type) { | |
243 | case NL80211_IFTYPE_AP: | |
244 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 245 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
246 | break; |
247 | case NL80211_IFTYPE_ADHOC: | |
248 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 249 | !!sdata->u.ibss.presp; |
2d0ddec5 | 250 | break; |
7659a193 | 251 | #ifdef CONFIG_MAC80211_MESH |
2d0ddec5 | 252 | case NL80211_IFTYPE_MESH_POINT: |
29cbe68c JB |
253 | sdata->vif.bss_conf.enable_beacon = |
254 | !!sdata->u.mesh.mesh_id_len; | |
2d0ddec5 | 255 | break; |
7659a193 | 256 | #endif |
2d0ddec5 JB |
257 | default: |
258 | /* not reached */ | |
259 | WARN_ON(1); | |
260 | break; | |
261 | } | |
262 | } | |
263 | } | |
264 | ||
12375ef9 | 265 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
266 | } |
267 | ||
f698d856 | 268 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 269 | { |
bda3933a JB |
270 | sdata->vif.bss_conf.use_cts_prot = false; |
271 | sdata->vif.bss_conf.use_short_preamble = false; | |
272 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
273 | return BSS_CHANGED_ERP_CTS_PROT | |
274 | BSS_CHANGED_ERP_PREAMBLE | | |
275 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
276 | } |
277 | ||
f0706e82 JB |
278 | static void ieee80211_tasklet_handler(unsigned long data) |
279 | { | |
280 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
37fbd908 JB |
281 | struct sta_info *sta, *tmp; |
282 | struct skb_eosp_msg_data *eosp_data; | |
f0706e82 | 283 | struct sk_buff *skb; |
f0706e82 JB |
284 | |
285 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
286 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
287 | switch (skb->pkt_type) { | |
288 | case IEEE80211_RX_MSG: | |
51fb61e7 | 289 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
290 | * netstack. */ |
291 | skb->pkt_type = 0; | |
005e472b | 292 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
293 | break; |
294 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 295 | skb->pkt_type = 0; |
005e472b | 296 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 297 | break; |
37fbd908 JB |
298 | case IEEE80211_EOSP_MSG: |
299 | eosp_data = (void *)skb->cb; | |
300 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
301 | /* skip wrong virtual interface */ | |
302 | if (memcmp(eosp_data->iface, | |
303 | sta->sdata->vif.addr, ETH_ALEN)) | |
304 | continue; | |
305 | clear_sta_flag(sta, WLAN_STA_SP); | |
306 | break; | |
307 | } | |
308 | dev_kfree_skb(skb); | |
309 | break; | |
f4ea83dd | 310 | default: |
5e3f3089 LF |
311 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
312 | skb->pkt_type); | |
f0706e82 JB |
313 | dev_kfree_skb(skb); |
314 | break; | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
f2753ddb JB |
319 | static void ieee80211_restart_work(struct work_struct *work) |
320 | { | |
321 | struct ieee80211_local *local = | |
322 | container_of(work, struct ieee80211_local, restart_work); | |
323 | ||
bc86863d SG |
324 | /* wait for scan work complete */ |
325 | flush_workqueue(local->workqueue); | |
326 | ||
327 | mutex_lock(&local->mtx); | |
79f460ca | 328 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || |
5260a5b2 JB |
329 | rcu_dereference_protected(local->sched_scan_sdata, |
330 | lockdep_is_held(&local->mtx)), | |
bc86863d SG |
331 | "%s called with hardware scan in progress\n", __func__); |
332 | mutex_unlock(&local->mtx); | |
333 | ||
f2753ddb | 334 | rtnl_lock(); |
4136c422 | 335 | ieee80211_scan_cancel(local); |
f2753ddb JB |
336 | ieee80211_reconfig(local); |
337 | rtnl_unlock(); | |
338 | } | |
339 | ||
340 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
341 | { | |
342 | struct ieee80211_local *local = hw_to_local(hw); | |
343 | ||
b5878a2d JB |
344 | trace_api_restart_hw(local); |
345 | ||
b196d031 MB |
346 | wiphy_info(hw->wiphy, |
347 | "Hardware restart was requested\n"); | |
348 | ||
18145c69 | 349 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
350 | ieee80211_stop_queues_by_reason(hw, |
351 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
352 | ||
04800ada AN |
353 | /* |
354 | * Stop all Rx during the reconfig. We don't want state changes | |
355 | * or driver callbacks while this is in progress. | |
356 | */ | |
357 | local->in_reconfig = true; | |
358 | barrier(); | |
359 | ||
f2753ddb JB |
360 | schedule_work(&local->restart_work); |
361 | } | |
362 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
363 | ||
0f78231b JB |
364 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
365 | { | |
366 | struct ieee80211_local *local = | |
367 | container_of(work, struct ieee80211_local, recalc_smps); | |
368 | ||
369 | mutex_lock(&local->iflist_mtx); | |
025e6be2 | 370 | ieee80211_recalc_smps(local); |
0f78231b JB |
371 | mutex_unlock(&local->iflist_mtx); |
372 | } | |
373 | ||
26b36cfe | 374 | #ifdef CONFIG_INET |
2b2c009e JO |
375 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
376 | unsigned long data, void *arg) | |
377 | { | |
378 | struct in_ifaddr *ifa = arg; | |
379 | struct ieee80211_local *local = | |
380 | container_of(nb, struct ieee80211_local, | |
381 | ifa_notifier); | |
382 | struct net_device *ndev = ifa->ifa_dev->dev; | |
383 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 384 | struct in_device *idev; |
2b2c009e | 385 | struct ieee80211_sub_if_data *sdata; |
68542962 | 386 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 387 | struct ieee80211_if_managed *ifmgd; |
68542962 | 388 | int c = 0; |
2b2c009e JO |
389 | |
390 | /* Make sure it's our interface that got changed */ | |
391 | if (!wdev) | |
392 | return NOTIFY_DONE; | |
393 | ||
394 | if (wdev->wiphy != local->hw.wiphy) | |
395 | return NOTIFY_DONE; | |
396 | ||
2b2c009e | 397 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 398 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
399 | |
400 | /* ARP filtering is only supported in managed mode */ | |
401 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
402 | return NOTIFY_DONE; | |
403 | ||
95ae6b22 | 404 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
405 | if (!idev) |
406 | return NOTIFY_DONE; | |
407 | ||
2b2c009e JO |
408 | ifmgd = &sdata->u.mgd; |
409 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
410 | |
411 | /* Copy the addresses to the bss_conf list */ | |
412 | ifa = idev->ifa_list; | |
413 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
414 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
415 | ifa = ifa->ifa_next; | |
416 | c++; | |
417 | } | |
418 | ||
419 | /* If not all addresses fit the list, disable filtering */ | |
420 | if (ifa) { | |
421 | sdata->arp_filter_state = false; | |
422 | c = 0; | |
423 | } else { | |
424 | sdata->arp_filter_state = true; | |
425 | } | |
426 | bss_conf->arp_addr_cnt = c; | |
427 | ||
53d69c39 | 428 | /* Configure driver only if associated (which also implies it is up) */ |
68542962 JO |
429 | if (ifmgd->associated) { |
430 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
431 | ieee80211_bss_info_change_notify(sdata, | |
432 | BSS_CHANGED_ARP_FILTER); | |
433 | } | |
434 | ||
2b2c009e JO |
435 | mutex_unlock(&ifmgd->mtx); |
436 | ||
437 | return NOTIFY_DONE; | |
438 | } | |
26b36cfe | 439 | #endif |
2b2c009e | 440 | |
4e6cbfd0 JL |
441 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
442 | { | |
443 | struct ieee80211_local *local = | |
444 | container_of(napi, struct ieee80211_local, napi); | |
445 | ||
446 | return local->ops->napi_poll(&local->hw, budget); | |
447 | } | |
448 | ||
449 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
450 | { | |
451 | struct ieee80211_local *local = hw_to_local(hw); | |
452 | ||
453 | napi_schedule(&local->napi); | |
454 | } | |
455 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
456 | ||
457 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
458 | { | |
459 | struct ieee80211_local *local = hw_to_local(hw); | |
460 | ||
461 | napi_complete(&local->napi); | |
462 | } | |
463 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
464 | ||
2e161f78 JB |
465 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
466 | static const struct ieee80211_txrx_stypes | |
467 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
468 | [NL80211_IFTYPE_ADHOC] = { | |
469 | .tx = 0xffff, | |
3bfda62c WH |
470 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
471 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
472 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
2e161f78 JB |
473 | }, |
474 | [NL80211_IFTYPE_STATION] = { | |
475 | .tx = 0xffff, | |
476 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
477 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
478 | }, | |
479 | [NL80211_IFTYPE_AP] = { | |
480 | .tx = 0xffff, | |
481 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
482 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
483 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
484 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
485 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
486 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
487 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
488 | }, | |
489 | [NL80211_IFTYPE_AP_VLAN] = { | |
490 | /* copy AP */ | |
491 | .tx = 0xffff, | |
492 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
493 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
494 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
495 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
496 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
497 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
498 | BIT(IEEE80211_STYPE_ACTION >> 4), |
499 | }, | |
500 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
501 | .tx = 0xffff, | |
502 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
503 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
504 | }, | |
505 | [NL80211_IFTYPE_P2P_GO] = { | |
506 | .tx = 0xffff, | |
507 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
508 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
509 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
510 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
511 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
512 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
513 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
514 | }, | |
c7108a71 JC |
515 | [NL80211_IFTYPE_MESH_POINT] = { |
516 | .tx = 0xffff, | |
71839121 JC |
517 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
518 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
519 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 520 | }, |
f142c6b9 JB |
521 | [NL80211_IFTYPE_P2P_DEVICE] = { |
522 | .tx = 0xffff, | |
523 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
524 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
525 | }, | |
2e161f78 JB |
526 | }; |
527 | ||
ef96a842 BG |
528 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
529 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
530 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
531 | ||
532 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
533 | IEEE80211_HT_CAP_MAX_AMSDU | | |
534 | IEEE80211_HT_CAP_SGI_40), | |
535 | .mcs = { | |
536 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
537 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
538 | }, | |
539 | }; | |
540 | ||
f0706e82 JB |
541 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
542 | const struct ieee80211_ops *ops) | |
543 | { | |
f0706e82 | 544 | struct ieee80211_local *local; |
96f5e66e | 545 | int priv_size, i; |
f0706e82 JB |
546 | struct wiphy *wiphy; |
547 | ||
f09603a2 JB |
548 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
549 | return NULL; | |
550 | ||
f0706e82 JB |
551 | /* Ensure 32-byte alignment of our private data and hw private data. |
552 | * We use the wiphy priv data for both our ieee80211_local and for | |
553 | * the driver's private data | |
554 | * | |
555 | * In memory it'll be like this: | |
556 | * | |
557 | * +-------------------------+ | |
558 | * | struct wiphy | | |
559 | * +-------------------------+ | |
560 | * | struct ieee80211_local | | |
561 | * +-------------------------+ | |
562 | * | driver's private data | | |
563 | * +-------------------------+ | |
564 | * | |
565 | */ | |
1ce8e7b5 | 566 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
567 | |
568 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
569 | ||
570 | if (!wiphy) | |
571 | return NULL; | |
572 | ||
2e161f78 JB |
573 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
574 | ||
207aba60 JB |
575 | wiphy->privid = mac80211_wiphy_privid; |
576 | ||
9bc383de JB |
577 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
578 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 579 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 580 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
581 | WIPHY_FLAG_OFFCHAN_TX; |
582 | ||
583 | if (ops->remain_on_channel) | |
584 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 585 | |
13c40c54 AS |
586 | wiphy->features = NL80211_FEATURE_SK_TX_STATUS | |
587 | NL80211_FEATURE_HT_IBSS; | |
a729cff8 | 588 | |
207aba60 JB |
589 | if (!ops->set_key) |
590 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 591 | |
0c1ad2ca | 592 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
593 | |
594 | local = wiphy_priv(wiphy); | |
de95a54b | 595 | |
f0706e82 JB |
596 | local->hw.wiphy = wiphy; |
597 | ||
1ce8e7b5 | 598 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 599 | |
cb831b53 | 600 | BUG_ON(!ops->tx); |
4150c572 JB |
601 | BUG_ON(!ops->start); |
602 | BUG_ON(!ops->stop); | |
4480f15c JB |
603 | BUG_ON(!ops->config); |
604 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
605 | BUG_ON(!ops->remove_interface); |
606 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
607 | local->ops = ops; |
608 | ||
e6a9854b JB |
609 | /* set up some defaults */ |
610 | local->hw.queues = 1; | |
611 | local->hw.max_rates = 1; | |
78be49ec | 612 | local->hw.max_report_rates = 0; |
df6ba5d8 | 613 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 614 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 615 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
616 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
617 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
618 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
619 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
620 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
c428c892 | 621 | local->user_power_level = -1; |
ef96a842 | 622 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
f0706e82 | 623 | |
79010420 | 624 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
625 | |
626 | __hw_addr_init(&local->mc_list); | |
627 | ||
c771c9d8 | 628 | mutex_init(&local->iflist_mtx); |
a1699b75 | 629 | mutex_init(&local->mtx); |
f0706e82 | 630 | |
ad0e2b5a | 631 | mutex_init(&local->key_mtx); |
3b8d81e0 | 632 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
633 | spin_lock_init(&local->queue_stop_reason_lock); |
634 | ||
681c4d07 JB |
635 | /* |
636 | * The rx_skb_queue is only accessed from tasklets, | |
637 | * but other SKB queues are used from within IRQ | |
638 | * context. Therefore, this one needs a different | |
639 | * locking class so our direct, non-irq-safe use of | |
640 | * the queue's lock doesn't throw lockdep warnings. | |
641 | */ | |
642 | skb_queue_head_init_class(&local->rx_skb_queue, | |
643 | &ieee80211_rx_skb_queue_class); | |
24a8fdad | 644 | |
c2b13452 | 645 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 646 | |
f2753ddb JB |
647 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
648 | ||
3ac64bee | 649 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
650 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
651 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 652 | |
520eb820 KV |
653 | INIT_WORK(&local->dynamic_ps_enable_work, |
654 | ieee80211_dynamic_ps_enable_work); | |
655 | INIT_WORK(&local->dynamic_ps_disable_work, | |
656 | ieee80211_dynamic_ps_disable_work); | |
657 | setup_timer(&local->dynamic_ps_timer, | |
658 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
659 | ||
85a9994a LC |
660 | INIT_WORK(&local->sched_scan_stopped_work, |
661 | ieee80211_sched_scan_stopped_work); | |
662 | ||
a729cff8 JB |
663 | spin_lock_init(&local->ack_status_lock); |
664 | idr_init(&local->ack_status_frames); | |
665 | /* preallocate at least one entry */ | |
666 | idr_pre_get(&local->ack_status_frames, GFP_KERNEL); | |
667 | ||
f0706e82 JB |
668 | sta_info_init(local); |
669 | ||
a6a67db2 | 670 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 671 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
672 | atomic_set(&local->agg_queue_stop[i], 0); |
673 | } | |
f0706e82 JB |
674 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
675 | (unsigned long)local); | |
f0706e82 JB |
676 | |
677 | tasklet_init(&local->tasklet, | |
678 | ieee80211_tasklet_handler, | |
679 | (unsigned long) local); | |
f0706e82 JB |
680 | |
681 | skb_queue_head_init(&local->skb_queue); | |
682 | skb_queue_head_init(&local->skb_queue_unreliable); | |
683 | ||
4e6cbfd0 JL |
684 | /* init dummy netdev for use w/ NAPI */ |
685 | init_dummy_netdev(&local->napi_dev); | |
686 | ||
fe67c913 JB |
687 | ieee80211_led_names(local); |
688 | ||
2eb278e0 | 689 | ieee80211_roc_setup(local); |
21f83589 | 690 | |
005e472b | 691 | return &local->hw; |
f0706e82 JB |
692 | } |
693 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
694 | ||
695 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
696 | { | |
697 | struct ieee80211_local *local = hw_to_local(hw); | |
7527a782 | 698 | int result, i; |
8318d78a | 699 | enum ieee80211_band band; |
be4a4b6a | 700 | int channels, max_bitrates; |
ba0afa2f | 701 | bool supp_ht, supp_vht; |
72d78728 | 702 | netdev_features_t feature_whitelist; |
25e47c18 | 703 | static const u32 cipher_suites[] = { |
5daa8a8e | 704 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
705 | WLAN_CIPHER_SUITE_WEP40, |
706 | WLAN_CIPHER_SUITE_WEP104, | |
707 | WLAN_CIPHER_SUITE_TKIP, | |
708 | WLAN_CIPHER_SUITE_CCMP, | |
709 | ||
710 | /* keep last -- depends on hw flags! */ | |
711 | WLAN_CIPHER_SUITE_AES_CMAC | |
712 | }; | |
8318d78a | 713 | |
3a25a8c8 JB |
714 | if (hw->flags & IEEE80211_HW_QUEUE_CONTROL && |
715 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || | |
716 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
717 | return -EINVAL; | |
718 | ||
38bb3e9d | 719 | #ifdef CONFIG_PM |
dfb89c56 JB |
720 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) && |
721 | (!local->ops->suspend || !local->ops->resume)) | |
eecc4800 | 722 | return -EINVAL; |
dfb89c56 | 723 | #endif |
eecc4800 | 724 | |
885bd8ec EP |
725 | if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan) |
726 | return -EINVAL; | |
727 | ||
72d78728 AN |
728 | /* Only HW csum features are currently compatible with mac80211 */ |
729 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
730 | NETIF_F_HW_CSUM; | |
731 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) | |
732 | return -EINVAL; | |
733 | ||
78be49ec HS |
734 | if (hw->max_report_rates == 0) |
735 | hw->max_report_rates = hw->max_rates; | |
736 | ||
8318d78a JB |
737 | /* |
738 | * generic code guarantees at least one band, | |
739 | * set this very early because much code assumes | |
740 | * that hw.conf.channel is assigned | |
741 | */ | |
2a519311 | 742 | channels = 0; |
de95a54b | 743 | max_bitrates = 0; |
5ef2d41a | 744 | supp_ht = false; |
ba0afa2f | 745 | supp_vht = false; |
8318d78a JB |
746 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
747 | struct ieee80211_supported_band *sband; | |
748 | ||
749 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
750 | if (!sband) |
751 | continue; | |
752 | if (!local->oper_channel) { | |
8318d78a JB |
753 | /* init channel we're on */ |
754 | local->hw.conf.channel = | |
58905ca5 JB |
755 | local->oper_channel = &sband->channels[0]; |
756 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 757 | } |
de95a54b JB |
758 | channels += sband->n_channels; |
759 | ||
760 | if (max_bitrates < sband->n_bitrates) | |
761 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 762 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 763 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
8318d78a | 764 | } |
f0706e82 | 765 | |
5ba63533 JB |
766 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
767 | sizeof(void *) * channels, GFP_KERNEL); | |
768 | if (!local->int_scan_req) | |
2a519311 JB |
769 | return -ENOMEM; |
770 | ||
c72e8d33 SW |
771 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
772 | if (!local->hw.wiphy->bands[band]) | |
773 | continue; | |
774 | local->int_scan_req->rates[band] = (u32) -1; | |
775 | } | |
776 | ||
f59ac048 | 777 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
778 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
779 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
780 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
781 | } | |
f59ac048 LR |
782 | |
783 | /* mac80211 always supports monitor */ | |
7527a782 JB |
784 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
785 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
786 | ||
8e621fc9 JB |
787 | /* |
788 | * mac80211 doesn't support more than 1 channel, and also not more | |
789 | * than one IBSS interface | |
790 | */ | |
791 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { | |
792 | const struct ieee80211_iface_combination *c; | |
793 | int j; | |
794 | ||
795 | c = &hw->wiphy->iface_combinations[i]; | |
796 | ||
797 | if (c->num_different_channels > 1) | |
7527a782 | 798 | return -EINVAL; |
f59ac048 | 799 | |
8e621fc9 JB |
800 | for (j = 0; j < c->n_limits; j++) |
801 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
802 | c->limits[j].max > 1) | |
803 | return -EINVAL; | |
804 | } | |
805 | ||
5eb5a52d JB |
806 | #ifndef CONFIG_MAC80211_MESH |
807 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
808 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
809 | #endif | |
810 | ||
1570ca59 JC |
811 | /* if the underlying driver supports mesh, mac80211 will (at least) |
812 | * provide routing of mesh authentication frames to userspace */ | |
813 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
814 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
815 | ||
a621fa4d JB |
816 | /* mac80211 supports control port protocol changing */ |
817 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
818 | ||
77965c97 JB |
819 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
820 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
821 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
822 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
823 | ||
ab13315a KV |
824 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
825 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
826 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
827 | ||
de95a54b JB |
828 | /* |
829 | * Calculate scan IE length -- we need this to alloc | |
830 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 831 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
832 | * information -- SSID is the driver's responsibility. |
833 | */ | |
dc9f48ce JM |
834 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
835 | 3 /* DS Params */; | |
5ef2d41a JB |
836 | if (supp_ht) |
837 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 838 | |
ba0afa2f MP |
839 | if (supp_vht) |
840 | local->scan_ies_len += | |
841 | 2 + sizeof(struct ieee80211_vht_capabilities); | |
842 | ||
de95a54b JB |
843 | if (!local->ops->hw_scan) { |
844 | /* For hw_scan, driver needs to set these up. */ | |
845 | local->hw.wiphy->max_scan_ssids = 4; | |
846 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
847 | } | |
848 | ||
849 | /* | |
850 | * If the driver supports any scan IEs, then assume the | |
851 | * limit includes the IEs mac80211 will add, otherwise | |
852 | * leave it at zero and let the driver sort it out; we | |
853 | * still pass our IEs to the driver but userspace will | |
854 | * not be allowed to in that case. | |
855 | */ | |
856 | if (local->hw.wiphy->max_scan_ie_len) | |
857 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
858 | ||
3ffc2a90 JB |
859 | /* Set up cipher suites unless driver already did */ |
860 | if (!local->hw.wiphy->cipher_suites) { | |
861 | local->hw.wiphy->cipher_suites = cipher_suites; | |
862 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
863 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
864 | local->hw.wiphy->n_cipher_suites--; | |
865 | } | |
5daa8a8e | 866 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
867 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
868 | local->hw.wiphy->cipher_suites += 2; | |
869 | local->hw.wiphy->n_cipher_suites -= 2; | |
870 | } else { | |
871 | u32 *suites; | |
872 | int r, w = 0; | |
873 | ||
874 | /* Filter out WEP */ | |
875 | ||
876 | suites = kmemdup( | |
877 | local->hw.wiphy->cipher_suites, | |
878 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
879 | GFP_KERNEL); | |
880 | if (!suites) | |
881 | return -ENOMEM; | |
882 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
883 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
884 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
885 | suite == WLAN_CIPHER_SUITE_WEP104) | |
886 | continue; | |
887 | suites[w++] = suite; | |
888 | } | |
889 | local->hw.wiphy->cipher_suites = suites; | |
890 | local->hw.wiphy->n_cipher_suites = w; | |
891 | local->wiphy_ciphers_allocated = true; | |
892 | } | |
5daa8a8e | 893 | } |
25e47c18 | 894 | |
21f83589 JB |
895 | if (!local->ops->remain_on_channel) |
896 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 897 | |
79f460ca LC |
898 | if (local->ops->sched_scan_start) |
899 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
900 | ||
dfe018bf AN |
901 | /* mac80211 based drivers don't support internal TDLS setup */ |
902 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
903 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
904 | ||
f0706e82 JB |
905 | result = wiphy_register(local->hw.wiphy); |
906 | if (result < 0) | |
2a519311 | 907 | goto fail_wiphy_register; |
f0706e82 | 908 | |
e2530083 JB |
909 | /* |
910 | * We use the number of queues for feature tests (QoS, HT) internally | |
911 | * so restrict them appropriately. | |
912 | */ | |
e2530083 JB |
913 | if (hw->queues > IEEE80211_MAX_QUEUES) |
914 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 915 | |
42935eca | 916 | local->workqueue = |
99b88a0e | 917 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 918 | if (!local->workqueue) { |
f0706e82 JB |
919 | result = -ENOMEM; |
920 | goto fail_workqueue; | |
921 | } | |
922 | ||
b306f453 JB |
923 | /* |
924 | * The hardware needs headroom for sending the frame, | |
925 | * and we need some headroom for passing the frame to monitor | |
926 | * interfaces, but never both at the same time. | |
927 | */ | |
33ccad35 | 928 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 929 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 930 | |
e9f207f0 JB |
931 | debugfs_hw_add(local); |
932 | ||
b446918b HS |
933 | /* |
934 | * if the driver doesn't specify a max listen interval we | |
935 | * use 5 which should be a safe default | |
936 | */ | |
ea95bba4 | 937 | if (local->hw.max_listen_interval == 0) |
b446918b | 938 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
939 | |
940 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
941 | ||
ff616381 | 942 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 943 | |
d4c4a9a1 | 944 | result = ieee80211_wep_init(local); |
3473187d | 945 | if (result < 0) |
0fb9a9ec JP |
946 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
947 | result); | |
d4c4a9a1 | 948 | |
b57e6b56 MSS |
949 | ieee80211_led_init(local); |
950 | ||
f0706e82 | 951 | rtnl_lock(); |
f0706e82 | 952 | |
830f9038 JB |
953 | result = ieee80211_init_rate_ctrl_alg(local, |
954 | hw->rate_control_algorithm); | |
f0706e82 | 955 | if (result < 0) { |
0fb9a9ec JP |
956 | wiphy_debug(local->hw.wiphy, |
957 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
958 | goto fail_rate; |
959 | } | |
960 | ||
8dffff21 JB |
961 | /* add one default STA interface if supported */ |
962 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
963 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
964 | NL80211_IFTYPE_STATION, NULL); | |
965 | if (result) | |
0fb9a9ec JP |
966 | wiphy_warn(local->hw.wiphy, |
967 | "Failed to add default virtual iface\n"); | |
8dffff21 | 968 | } |
f0706e82 | 969 | |
f0706e82 JB |
970 | rtnl_unlock(); |
971 | ||
10f644a4 JB |
972 | local->network_latency_notifier.notifier_call = |
973 | ieee80211_max_network_latency; | |
974 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
975 | &local->network_latency_notifier); | |
10f644a4 JB |
976 | if (result) { |
977 | rtnl_lock(); | |
978 | goto fail_pm_qos; | |
979 | } | |
980 | ||
26b36cfe | 981 | #ifdef CONFIG_INET |
2b2c009e JO |
982 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
983 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
984 | if (result) | |
985 | goto fail_ifa; | |
26b36cfe | 986 | #endif |
2b2c009e | 987 | |
4e6cbfd0 JL |
988 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
989 | local->hw.napi_weight); | |
990 | ||
f0706e82 JB |
991 | return 0; |
992 | ||
93c08c32 | 993 | #ifdef CONFIG_INET |
2b2c009e JO |
994 | fail_ifa: |
995 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
996 | &local->network_latency_notifier); | |
997 | rtnl_lock(); | |
93c08c32 | 998 | #endif |
10f644a4 JB |
999 | fail_pm_qos: |
1000 | ieee80211_led_exit(local); | |
1001 | ieee80211_remove_interfaces(local); | |
10f644a4 | 1002 | fail_rate: |
f0706e82 | 1003 | rtnl_unlock(); |
d4c4a9a1 | 1004 | ieee80211_wep_free(local); |
f0706e82 | 1005 | sta_info_stop(local); |
42935eca | 1006 | destroy_workqueue(local->workqueue); |
10f644a4 | 1007 | fail_workqueue: |
f0706e82 | 1008 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 1009 | fail_wiphy_register: |
3ffc2a90 JB |
1010 | if (local->wiphy_ciphers_allocated) |
1011 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 1012 | kfree(local->int_scan_req); |
f0706e82 JB |
1013 | return result; |
1014 | } | |
1015 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1016 | ||
f0706e82 JB |
1017 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1018 | { | |
1019 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1020 | |
1021 | tasklet_kill(&local->tx_pending_tasklet); | |
1022 | tasklet_kill(&local->tasklet); | |
1023 | ||
10f644a4 JB |
1024 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
1025 | &local->network_latency_notifier); | |
26b36cfe | 1026 | #ifdef CONFIG_INET |
2b2c009e | 1027 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1028 | #endif |
10f644a4 | 1029 | |
f0706e82 JB |
1030 | rtnl_lock(); |
1031 | ||
79010420 JB |
1032 | /* |
1033 | * At this point, interface list manipulations are fine | |
1034 | * because the driver cannot be handing us frames any | |
1035 | * more and the tasklet is killed. | |
1036 | */ | |
75636525 | 1037 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1038 | |
f0706e82 JB |
1039 | rtnl_unlock(); |
1040 | ||
258086a4 | 1041 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
1042 | cancel_work_sync(&local->reconfig_filter); |
1043 | ||
f0706e82 | 1044 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1045 | rate_control_deinitialize(local); |
1046 | ||
f64f9e71 JP |
1047 | if (skb_queue_len(&local->skb_queue) || |
1048 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1049 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1050 | skb_queue_purge(&local->skb_queue); |
1051 | skb_queue_purge(&local->skb_queue_unreliable); | |
24a8fdad | 1052 | skb_queue_purge(&local->rx_skb_queue); |
f0706e82 | 1053 | |
42935eca | 1054 | destroy_workqueue(local->workqueue); |
f0706e82 | 1055 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1056 | sta_info_stop(local); |
f0706e82 JB |
1057 | ieee80211_wep_free(local); |
1058 | ieee80211_led_exit(local); | |
5ba63533 | 1059 | kfree(local->int_scan_req); |
f0706e82 JB |
1060 | } |
1061 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1062 | ||
a729cff8 JB |
1063 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1064 | { | |
1065 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1066 | kfree_skb(p); | |
1067 | return 0; | |
1068 | } | |
1069 | ||
f0706e82 JB |
1070 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1071 | { | |
1072 | struct ieee80211_local *local = hw_to_local(hw); | |
1073 | ||
c771c9d8 | 1074 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1075 | mutex_destroy(&local->mtx); |
c771c9d8 | 1076 | |
3ffc2a90 JB |
1077 | if (local->wiphy_ciphers_allocated) |
1078 | kfree(local->hw.wiphy->cipher_suites); | |
1079 | ||
a729cff8 JB |
1080 | idr_for_each(&local->ack_status_frames, |
1081 | ieee80211_free_ack_frame, NULL); | |
1082 | idr_destroy(&local->ack_status_frames); | |
1083 | ||
f0706e82 JB |
1084 | wiphy_free(local->hw.wiphy); |
1085 | } | |
1086 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1087 | ||
f0706e82 JB |
1088 | static int __init ieee80211_init(void) |
1089 | { | |
1090 | struct sk_buff *skb; | |
1091 | int ret; | |
1092 | ||
e039fa4a JB |
1093 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1094 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1095 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1096 | |
cccf129f FF |
1097 | ret = rc80211_minstrel_init(); |
1098 | if (ret) | |
1099 | return ret; | |
1100 | ||
ec8aa669 FF |
1101 | ret = rc80211_minstrel_ht_init(); |
1102 | if (ret) | |
1103 | goto err_minstrel; | |
1104 | ||
4b475898 | 1105 | ret = rc80211_pid_init(); |
ad018375 | 1106 | if (ret) |
47846c9b | 1107 | goto err_pid; |
f0706e82 | 1108 | |
47846c9b JB |
1109 | ret = ieee80211_iface_init(); |
1110 | if (ret) | |
1111 | goto err_netdev; | |
e9f207f0 | 1112 | |
f0706e82 | 1113 | return 0; |
47846c9b JB |
1114 | err_netdev: |
1115 | rc80211_pid_exit(); | |
1116 | err_pid: | |
ec8aa669 FF |
1117 | rc80211_minstrel_ht_exit(); |
1118 | err_minstrel: | |
47846c9b JB |
1119 | rc80211_minstrel_exit(); |
1120 | ||
1121 | return ret; | |
f0706e82 JB |
1122 | } |
1123 | ||
f0706e82 JB |
1124 | static void __exit ieee80211_exit(void) |
1125 | { | |
4b475898 | 1126 | rc80211_pid_exit(); |
ec8aa669 | 1127 | rc80211_minstrel_ht_exit(); |
cccf129f | 1128 | rc80211_minstrel_exit(); |
ac71c691 | 1129 | |
f7a92144 LCC |
1130 | if (mesh_allocated) |
1131 | ieee80211s_stop(); | |
902acc78 | 1132 | |
47846c9b | 1133 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1134 | |
1135 | rcu_barrier(); | |
f0706e82 JB |
1136 | } |
1137 | ||
1138 | ||
ca9938fe | 1139 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1140 | module_exit(ieee80211_exit); |
1141 | ||
1142 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1143 | MODULE_LICENSE("GPL"); |