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> |
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 | ||
55de908a | 96 | static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
b2c258fb | 97 | { |
1ea6f9c0 | 98 | struct ieee80211_sub_if_data *sdata; |
5e5202a4 | 99 | struct ieee80211_channel *chan; |
55de908a | 100 | u32 changed = 0; |
e8975581 | 101 | int power; |
094d05dc | 102 | enum nl80211_channel_type channel_type; |
ffd2778b | 103 | u32 offchannel_flag; |
1ea6f9c0 | 104 | bool scanning = false; |
f0706e82 | 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 | */ | |
55de908a | 112 | if (chan == local->_oper_channel) |
4f2e9d91 BG |
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; |
42d97a59 | 118 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 119 | } else { |
55de908a | 120 | chan = local->_oper_channel; |
0aaffa9b | 121 | channel_type = local->_oper_channel_type; |
72bdcf34 | 122 | } |
b23b025f | 123 | |
55de908a | 124 | if (chan != local->_oper_channel || |
b23b025f BG |
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 | ||
1ea6f9c0 JB |
151 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
152 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) || | |
153 | test_bit(SCAN_HW_SCANNING, &local->scanning); | |
154 | power = chan->max_power; | |
a8302de9 | 155 | |
1ea6f9c0 JB |
156 | rcu_read_lock(); |
157 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
158 | if (!rcu_access_pointer(sdata->vif.chanctx_conf)) | |
159 | continue; | |
160 | power = min(power, sdata->vif.bss_conf.txpower); | |
161 | } | |
162 | rcu_read_unlock(); | |
a8302de9 | 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 | |
55de908a JB |
169 | return changed; |
170 | } | |
171 | ||
172 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
173 | { | |
174 | int ret = 0; | |
175 | ||
176 | might_sleep(); | |
177 | ||
178 | if (!local->use_chanctx) | |
179 | changed |= ieee80211_hw_conf_chan(local); | |
180 | else | |
181 | changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | | |
182 | IEEE80211_CONF_CHANGE_POWER); | |
183 | ||
e8975581 | 184 | if (changed && local->open_count) { |
24487981 | 185 | ret = drv_config(local, changed); |
d73782fd | 186 | /* |
447107fb | 187 | * Goal: |
d73782fd JB |
188 | * HW reconfiguration should never fail, the driver has told |
189 | * us what it can support so it should live up to that promise. | |
447107fb RC |
190 | * |
191 | * Current status: | |
192 | * rfkill is not integrated with mac80211 and a | |
193 | * configuration command can thus fail if hardware rfkill | |
194 | * is enabled | |
195 | * | |
196 | * FIXME: integrate rfkill with mac80211 and then add this | |
197 | * WARN_ON() back | |
198 | * | |
d73782fd | 199 | */ |
447107fb | 200 | /* WARN_ON(ret); */ |
d73782fd | 201 | } |
f0706e82 | 202 | |
b2c258fb JB |
203 | return ret; |
204 | } | |
f0706e82 | 205 | |
471b3efd JB |
206 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
207 | u32 changed) | |
d9430a32 | 208 | { |
471b3efd | 209 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 210 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
211 | |
212 | if (!changed) | |
213 | return; | |
214 | ||
9cef8737 | 215 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
66e67e41 | 216 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9cef8737 | 217 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
2d0ddec5 JB |
218 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
219 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 220 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
1be7fe8d BJ |
221 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) |
222 | sdata->vif.bss_conf.bssid = NULL; | |
2d0ddec5 | 223 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 | 224 | sdata->vif.bss_conf.bssid = zero; |
f142c6b9 JB |
225 | } else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) { |
226 | sdata->vif.bss_conf.bssid = sdata->vif.addr; | |
227 | WARN_ONCE(changed & ~(BSS_CHANGED_IDLE), | |
228 | "P2P Device BSS changed %#x", changed); | |
2d0ddec5 JB |
229 | } else { |
230 | WARN_ON(1); | |
231 | return; | |
232 | } | |
233 | ||
234 | switch (sdata->vif.type) { | |
235 | case NL80211_IFTYPE_AP: | |
236 | case NL80211_IFTYPE_ADHOC: | |
1be7fe8d | 237 | case NL80211_IFTYPE_WDS: |
2d0ddec5 JB |
238 | case NL80211_IFTYPE_MESH_POINT: |
239 | break; | |
240 | default: | |
241 | /* do not warn to simplify caller in scan.c */ | |
242 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
243 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
244 | return; | |
245 | break; | |
246 | } | |
247 | ||
248 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 249 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
b23b025f | 250 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { |
2d0ddec5 JB |
251 | sdata->vif.bss_conf.enable_beacon = false; |
252 | } else { | |
253 | /* | |
254 | * Beacon should be enabled, but AP mode must | |
255 | * check whether there is a beacon configured. | |
256 | */ | |
257 | switch (sdata->vif.type) { | |
258 | case NL80211_IFTYPE_AP: | |
259 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 260 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
261 | break; |
262 | case NL80211_IFTYPE_ADHOC: | |
263 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 264 | !!sdata->u.ibss.presp; |
2d0ddec5 | 265 | break; |
7659a193 | 266 | #ifdef CONFIG_MAC80211_MESH |
2d0ddec5 | 267 | case NL80211_IFTYPE_MESH_POINT: |
29cbe68c JB |
268 | sdata->vif.bss_conf.enable_beacon = |
269 | !!sdata->u.mesh.mesh_id_len; | |
2d0ddec5 | 270 | break; |
7659a193 | 271 | #endif |
2d0ddec5 JB |
272 | default: |
273 | /* not reached */ | |
274 | WARN_ON(1); | |
275 | break; | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
12375ef9 | 280 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
281 | } |
282 | ||
f698d856 | 283 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 284 | { |
bda3933a JB |
285 | sdata->vif.bss_conf.use_cts_prot = false; |
286 | sdata->vif.bss_conf.use_short_preamble = false; | |
287 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
288 | return BSS_CHANGED_ERP_CTS_PROT | |
289 | BSS_CHANGED_ERP_PREAMBLE | | |
290 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
291 | } |
292 | ||
f0706e82 JB |
293 | static void ieee80211_tasklet_handler(unsigned long data) |
294 | { | |
295 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
37fbd908 JB |
296 | struct sta_info *sta, *tmp; |
297 | struct skb_eosp_msg_data *eosp_data; | |
f0706e82 | 298 | struct sk_buff *skb; |
f0706e82 JB |
299 | |
300 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
301 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
302 | switch (skb->pkt_type) { | |
303 | case IEEE80211_RX_MSG: | |
51fb61e7 | 304 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
305 | * netstack. */ |
306 | skb->pkt_type = 0; | |
005e472b | 307 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
308 | break; |
309 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 310 | skb->pkt_type = 0; |
005e472b | 311 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 312 | break; |
37fbd908 JB |
313 | case IEEE80211_EOSP_MSG: |
314 | eosp_data = (void *)skb->cb; | |
315 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
316 | /* skip wrong virtual interface */ | |
317 | if (memcmp(eosp_data->iface, | |
318 | sta->sdata->vif.addr, ETH_ALEN)) | |
319 | continue; | |
320 | clear_sta_flag(sta, WLAN_STA_SP); | |
321 | break; | |
322 | } | |
323 | dev_kfree_skb(skb); | |
324 | break; | |
f4ea83dd | 325 | default: |
5e3f3089 LF |
326 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
327 | skb->pkt_type); | |
f0706e82 JB |
328 | dev_kfree_skb(skb); |
329 | break; | |
330 | } | |
331 | } | |
332 | } | |
333 | ||
f2753ddb JB |
334 | static void ieee80211_restart_work(struct work_struct *work) |
335 | { | |
336 | struct ieee80211_local *local = | |
337 | container_of(work, struct ieee80211_local, restart_work); | |
338 | ||
bc86863d SG |
339 | /* wait for scan work complete */ |
340 | flush_workqueue(local->workqueue); | |
341 | ||
342 | mutex_lock(&local->mtx); | |
79f460ca | 343 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || |
5260a5b2 JB |
344 | rcu_dereference_protected(local->sched_scan_sdata, |
345 | lockdep_is_held(&local->mtx)), | |
bc86863d SG |
346 | "%s called with hardware scan in progress\n", __func__); |
347 | mutex_unlock(&local->mtx); | |
348 | ||
f2753ddb | 349 | rtnl_lock(); |
4136c422 | 350 | ieee80211_scan_cancel(local); |
f2753ddb JB |
351 | ieee80211_reconfig(local); |
352 | rtnl_unlock(); | |
353 | } | |
354 | ||
355 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
356 | { | |
357 | struct ieee80211_local *local = hw_to_local(hw); | |
358 | ||
b5878a2d JB |
359 | trace_api_restart_hw(local); |
360 | ||
b196d031 MB |
361 | wiphy_info(hw->wiphy, |
362 | "Hardware restart was requested\n"); | |
363 | ||
18145c69 | 364 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
365 | ieee80211_stop_queues_by_reason(hw, |
366 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
367 | ||
04800ada AN |
368 | /* |
369 | * Stop all Rx during the reconfig. We don't want state changes | |
370 | * or driver callbacks while this is in progress. | |
371 | */ | |
372 | local->in_reconfig = true; | |
373 | barrier(); | |
374 | ||
f2753ddb JB |
375 | schedule_work(&local->restart_work); |
376 | } | |
377 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
378 | ||
26b36cfe | 379 | #ifdef CONFIG_INET |
2b2c009e JO |
380 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
381 | unsigned long data, void *arg) | |
382 | { | |
383 | struct in_ifaddr *ifa = arg; | |
384 | struct ieee80211_local *local = | |
385 | container_of(nb, struct ieee80211_local, | |
386 | ifa_notifier); | |
387 | struct net_device *ndev = ifa->ifa_dev->dev; | |
388 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 389 | struct in_device *idev; |
2b2c009e | 390 | struct ieee80211_sub_if_data *sdata; |
68542962 | 391 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 392 | struct ieee80211_if_managed *ifmgd; |
68542962 | 393 | int c = 0; |
2b2c009e JO |
394 | |
395 | /* Make sure it's our interface that got changed */ | |
396 | if (!wdev) | |
397 | return NOTIFY_DONE; | |
398 | ||
399 | if (wdev->wiphy != local->hw.wiphy) | |
400 | return NOTIFY_DONE; | |
401 | ||
2b2c009e | 402 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 403 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
404 | |
405 | /* ARP filtering is only supported in managed mode */ | |
406 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
407 | return NOTIFY_DONE; | |
408 | ||
95ae6b22 | 409 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
410 | if (!idev) |
411 | return NOTIFY_DONE; | |
412 | ||
2b2c009e JO |
413 | ifmgd = &sdata->u.mgd; |
414 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
415 | |
416 | /* Copy the addresses to the bss_conf list */ | |
417 | ifa = idev->ifa_list; | |
418 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
419 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
420 | ifa = ifa->ifa_next; | |
421 | c++; | |
422 | } | |
423 | ||
424 | /* If not all addresses fit the list, disable filtering */ | |
425 | if (ifa) { | |
426 | sdata->arp_filter_state = false; | |
427 | c = 0; | |
428 | } else { | |
429 | sdata->arp_filter_state = true; | |
430 | } | |
431 | bss_conf->arp_addr_cnt = c; | |
432 | ||
53d69c39 | 433 | /* Configure driver only if associated (which also implies it is up) */ |
68542962 JO |
434 | if (ifmgd->associated) { |
435 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
436 | ieee80211_bss_info_change_notify(sdata, | |
437 | BSS_CHANGED_ARP_FILTER); | |
438 | } | |
439 | ||
2b2c009e JO |
440 | mutex_unlock(&ifmgd->mtx); |
441 | ||
442 | return NOTIFY_DONE; | |
443 | } | |
26b36cfe | 444 | #endif |
2b2c009e | 445 | |
4e6cbfd0 JL |
446 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
447 | { | |
448 | struct ieee80211_local *local = | |
449 | container_of(napi, struct ieee80211_local, napi); | |
450 | ||
451 | return local->ops->napi_poll(&local->hw, budget); | |
452 | } | |
453 | ||
454 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
455 | { | |
456 | struct ieee80211_local *local = hw_to_local(hw); | |
457 | ||
458 | napi_schedule(&local->napi); | |
459 | } | |
460 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
461 | ||
462 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
463 | { | |
464 | struct ieee80211_local *local = hw_to_local(hw); | |
465 | ||
466 | napi_complete(&local->napi); | |
467 | } | |
468 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
469 | ||
2e161f78 JB |
470 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
471 | static const struct ieee80211_txrx_stypes | |
472 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
473 | [NL80211_IFTYPE_ADHOC] = { | |
474 | .tx = 0xffff, | |
3bfda62c WH |
475 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
476 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
41e31b8b AQ |
477 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
478 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
2e161f78 JB |
479 | }, |
480 | [NL80211_IFTYPE_STATION] = { | |
481 | .tx = 0xffff, | |
482 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
483 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
484 | }, | |
485 | [NL80211_IFTYPE_AP] = { | |
486 | .tx = 0xffff, | |
487 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
488 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
489 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
490 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
491 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
492 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
493 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
494 | }, | |
495 | [NL80211_IFTYPE_AP_VLAN] = { | |
496 | /* copy AP */ | |
497 | .tx = 0xffff, | |
498 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
499 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
500 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
501 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
502 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
503 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
504 | BIT(IEEE80211_STYPE_ACTION >> 4), |
505 | }, | |
506 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
507 | .tx = 0xffff, | |
508 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
509 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
510 | }, | |
511 | [NL80211_IFTYPE_P2P_GO] = { | |
512 | .tx = 0xffff, | |
513 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
514 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
515 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
516 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
517 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
518 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
519 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
520 | }, | |
c7108a71 JC |
521 | [NL80211_IFTYPE_MESH_POINT] = { |
522 | .tx = 0xffff, | |
71839121 JC |
523 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
524 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
525 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 526 | }, |
f142c6b9 JB |
527 | [NL80211_IFTYPE_P2P_DEVICE] = { |
528 | .tx = 0xffff, | |
529 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
530 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
531 | }, | |
2e161f78 JB |
532 | }; |
533 | ||
ef96a842 BG |
534 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
535 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
536 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
537 | ||
538 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
539 | IEEE80211_HT_CAP_MAX_AMSDU | | |
540 | IEEE80211_HT_CAP_SGI_40), | |
541 | .mcs = { | |
542 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
543 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
544 | }, | |
545 | }; | |
546 | ||
f0706e82 JB |
547 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
548 | const struct ieee80211_ops *ops) | |
549 | { | |
f0706e82 | 550 | struct ieee80211_local *local; |
96f5e66e | 551 | int priv_size, i; |
f0706e82 | 552 | struct wiphy *wiphy; |
fe57d9f5 | 553 | bool use_chanctx; |
f0706e82 | 554 | |
c0af0734 JB |
555 | if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
556 | !ops->add_interface || !ops->remove_interface || | |
557 | !ops->configure_filter)) | |
558 | return NULL; | |
559 | ||
f09603a2 JB |
560 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
561 | return NULL; | |
562 | ||
e269d860 JB |
563 | /* check all or no channel context operations exist */ |
564 | i = !!ops->add_chanctx + !!ops->remove_chanctx + | |
565 | !!ops->change_chanctx + !!ops->assign_vif_chanctx + | |
566 | !!ops->unassign_vif_chanctx; | |
567 | if (WARN_ON(i != 0 && i != 5)) | |
568 | return NULL; | |
fe57d9f5 | 569 | use_chanctx = i == 5; |
e269d860 | 570 | |
f0706e82 JB |
571 | /* Ensure 32-byte alignment of our private data and hw private data. |
572 | * We use the wiphy priv data for both our ieee80211_local and for | |
573 | * the driver's private data | |
574 | * | |
575 | * In memory it'll be like this: | |
576 | * | |
577 | * +-------------------------+ | |
578 | * | struct wiphy | | |
579 | * +-------------------------+ | |
580 | * | struct ieee80211_local | | |
581 | * +-------------------------+ | |
582 | * | driver's private data | | |
583 | * +-------------------------+ | |
584 | * | |
585 | */ | |
1ce8e7b5 | 586 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
587 | |
588 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
589 | ||
590 | if (!wiphy) | |
591 | return NULL; | |
592 | ||
2e161f78 JB |
593 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
594 | ||
207aba60 JB |
595 | wiphy->privid = mac80211_wiphy_privid; |
596 | ||
9bc383de JB |
597 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
598 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 599 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 600 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
601 | WIPHY_FLAG_OFFCHAN_TX; |
602 | ||
603 | if (ops->remain_on_channel) | |
604 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 605 | |
b292219f JB |
606 | wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
607 | NL80211_FEATURE_SAE | | |
1ea6f9c0 JB |
608 | NL80211_FEATURE_HT_IBSS | |
609 | NL80211_FEATURE_VIF_TXPOWER; | |
a729cff8 | 610 | |
cd2bb512 | 611 | if (!ops->hw_scan) |
5c95b940 AQ |
612 | wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
613 | NL80211_FEATURE_AP_SCAN; | |
614 | ||
cd2bb512 | 615 | |
207aba60 JB |
616 | if (!ops->set_key) |
617 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 618 | |
0c1ad2ca | 619 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
620 | |
621 | local = wiphy_priv(wiphy); | |
de95a54b | 622 | |
f0706e82 JB |
623 | local->hw.wiphy = wiphy; |
624 | ||
1ce8e7b5 | 625 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 JB |
626 | |
627 | local->ops = ops; | |
fe57d9f5 | 628 | local->use_chanctx = use_chanctx; |
f0706e82 | 629 | |
e6a9854b JB |
630 | /* set up some defaults */ |
631 | local->hw.queues = 1; | |
632 | local->hw.max_rates = 1; | |
78be49ec | 633 | local->hw.max_report_rates = 0; |
df6ba5d8 | 634 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 635 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 636 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
637 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
638 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
639 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
640 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
641 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
51648921 JB |
642 | local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
643 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; | |
1ea6f9c0 | 644 | local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
ef96a842 | 645 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
f0706e82 | 646 | |
79010420 | 647 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
648 | |
649 | __hw_addr_init(&local->mc_list); | |
650 | ||
c771c9d8 | 651 | mutex_init(&local->iflist_mtx); |
a1699b75 | 652 | mutex_init(&local->mtx); |
f0706e82 | 653 | |
ad0e2b5a | 654 | mutex_init(&local->key_mtx); |
3b8d81e0 | 655 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
656 | spin_lock_init(&local->queue_stop_reason_lock); |
657 | ||
d01a1e65 MK |
658 | INIT_LIST_HEAD(&local->chanctx_list); |
659 | mutex_init(&local->chanctx_mtx); | |
660 | ||
681c4d07 JB |
661 | /* |
662 | * The rx_skb_queue is only accessed from tasklets, | |
663 | * but other SKB queues are used from within IRQ | |
664 | * context. Therefore, this one needs a different | |
665 | * locking class so our direct, non-irq-safe use of | |
666 | * the queue's lock doesn't throw lockdep warnings. | |
667 | */ | |
668 | skb_queue_head_init_class(&local->rx_skb_queue, | |
669 | &ieee80211_rx_skb_queue_class); | |
24a8fdad | 670 | |
c2b13452 | 671 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 672 | |
f2753ddb JB |
673 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
674 | ||
3ac64bee | 675 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b | 676 | local->smps_mode = IEEE80211_SMPS_OFF; |
3ac64bee | 677 | |
520eb820 KV |
678 | INIT_WORK(&local->dynamic_ps_enable_work, |
679 | ieee80211_dynamic_ps_enable_work); | |
680 | INIT_WORK(&local->dynamic_ps_disable_work, | |
681 | ieee80211_dynamic_ps_disable_work); | |
682 | setup_timer(&local->dynamic_ps_timer, | |
683 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
684 | ||
85a9994a LC |
685 | INIT_WORK(&local->sched_scan_stopped_work, |
686 | ieee80211_sched_scan_stopped_work); | |
687 | ||
a729cff8 JB |
688 | spin_lock_init(&local->ack_status_lock); |
689 | idr_init(&local->ack_status_frames); | |
690 | /* preallocate at least one entry */ | |
691 | idr_pre_get(&local->ack_status_frames, GFP_KERNEL); | |
692 | ||
f0706e82 JB |
693 | sta_info_init(local); |
694 | ||
a6a67db2 | 695 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 696 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
697 | atomic_set(&local->agg_queue_stop[i], 0); |
698 | } | |
f0706e82 JB |
699 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
700 | (unsigned long)local); | |
f0706e82 JB |
701 | |
702 | tasklet_init(&local->tasklet, | |
703 | ieee80211_tasklet_handler, | |
704 | (unsigned long) local); | |
f0706e82 JB |
705 | |
706 | skb_queue_head_init(&local->skb_queue); | |
707 | skb_queue_head_init(&local->skb_queue_unreliable); | |
708 | ||
4e6cbfd0 JL |
709 | /* init dummy netdev for use w/ NAPI */ |
710 | init_dummy_netdev(&local->napi_dev); | |
711 | ||
fe67c913 JB |
712 | ieee80211_led_names(local); |
713 | ||
2eb278e0 | 714 | ieee80211_roc_setup(local); |
21f83589 | 715 | |
005e472b | 716 | return &local->hw; |
f0706e82 JB |
717 | } |
718 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
719 | ||
720 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
721 | { | |
722 | struct ieee80211_local *local = hw_to_local(hw); | |
7527a782 | 723 | int result, i; |
8318d78a | 724 | enum ieee80211_band band; |
be4a4b6a | 725 | int channels, max_bitrates; |
ba0afa2f | 726 | bool supp_ht, supp_vht; |
72d78728 | 727 | netdev_features_t feature_whitelist; |
25e47c18 | 728 | static const u32 cipher_suites[] = { |
5daa8a8e | 729 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
730 | WLAN_CIPHER_SUITE_WEP40, |
731 | WLAN_CIPHER_SUITE_WEP104, | |
732 | WLAN_CIPHER_SUITE_TKIP, | |
733 | WLAN_CIPHER_SUITE_CCMP, | |
734 | ||
735 | /* keep last -- depends on hw flags! */ | |
736 | WLAN_CIPHER_SUITE_AES_CMAC | |
737 | }; | |
8318d78a | 738 | |
3a25a8c8 JB |
739 | if (hw->flags & IEEE80211_HW_QUEUE_CONTROL && |
740 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || | |
741 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
742 | return -EINVAL; | |
743 | ||
38bb3e9d | 744 | #ifdef CONFIG_PM |
dfb89c56 JB |
745 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) && |
746 | (!local->ops->suspend || !local->ops->resume)) | |
eecc4800 | 747 | return -EINVAL; |
dfb89c56 | 748 | #endif |
eecc4800 | 749 | |
885bd8ec EP |
750 | if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan) |
751 | return -EINVAL; | |
752 | ||
fe57d9f5 JB |
753 | if (!local->use_chanctx) { |
754 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
755 | const struct ieee80211_iface_combination *comb; | |
756 | ||
757 | comb = &local->hw.wiphy->iface_combinations[i]; | |
758 | ||
759 | if (comb->num_different_channels > 1) | |
760 | return -EINVAL; | |
761 | } | |
746a3365 | 762 | } else { |
fe57d9f5 JB |
763 | /* |
764 | * WDS is currently prohibited when channel contexts are used | |
765 | * because there's no clear definition of which channel WDS | |
766 | * type interfaces use | |
767 | */ | |
768 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)) | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
72d78728 AN |
772 | /* Only HW csum features are currently compatible with mac80211 */ |
773 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
774 | NETIF_F_HW_CSUM; | |
775 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) | |
776 | return -EINVAL; | |
777 | ||
78be49ec HS |
778 | if (hw->max_report_rates == 0) |
779 | hw->max_report_rates = hw->max_rates; | |
780 | ||
04ecd257 JB |
781 | local->rx_chains = 1; |
782 | ||
8318d78a JB |
783 | /* |
784 | * generic code guarantees at least one band, | |
785 | * set this very early because much code assumes | |
786 | * that hw.conf.channel is assigned | |
787 | */ | |
2a519311 | 788 | channels = 0; |
de95a54b | 789 | max_bitrates = 0; |
5ef2d41a | 790 | supp_ht = false; |
ba0afa2f | 791 | supp_vht = false; |
8318d78a JB |
792 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
793 | struct ieee80211_supported_band *sband; | |
794 | ||
795 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
796 | if (!sband) |
797 | continue; | |
55de908a | 798 | if (!local->use_chanctx && !local->_oper_channel) { |
8318d78a JB |
799 | /* init channel we're on */ |
800 | local->hw.conf.channel = | |
55de908a | 801 | local->_oper_channel = &sband->channels[0]; |
58905ca5 | 802 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; |
8318d78a | 803 | } |
4bf88530 JB |
804 | cfg80211_chandef_create(&local->monitor_chandef, |
805 | &sband->channels[0], | |
806 | NL80211_CHAN_NO_HT); | |
de95a54b JB |
807 | channels += sband->n_channels; |
808 | ||
809 | if (max_bitrates < sband->n_bitrates) | |
810 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 811 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 812 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
04ecd257 JB |
813 | |
814 | if (sband->ht_cap.ht_supported) | |
815 | local->rx_chains = | |
816 | max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), | |
817 | local->rx_chains); | |
818 | ||
819 | /* TODO: consider VHT for RX chains, hopefully it's the same */ | |
8318d78a | 820 | } |
f0706e82 | 821 | |
5ba63533 JB |
822 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
823 | sizeof(void *) * channels, GFP_KERNEL); | |
824 | if (!local->int_scan_req) | |
2a519311 JB |
825 | return -ENOMEM; |
826 | ||
c72e8d33 SW |
827 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
828 | if (!local->hw.wiphy->bands[band]) | |
829 | continue; | |
830 | local->int_scan_req->rates[band] = (u32) -1; | |
831 | } | |
832 | ||
f59ac048 | 833 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
834 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
835 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
836 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
837 | } | |
f59ac048 LR |
838 | |
839 | /* mac80211 always supports monitor */ | |
7527a782 JB |
840 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
841 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
842 | ||
55de908a | 843 | /* mac80211 doesn't support more than one IBSS interface right now */ |
8e621fc9 JB |
844 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
845 | const struct ieee80211_iface_combination *c; | |
846 | int j; | |
847 | ||
848 | c = &hw->wiphy->iface_combinations[i]; | |
849 | ||
8e621fc9 JB |
850 | for (j = 0; j < c->n_limits; j++) |
851 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
852 | c->limits[j].max > 1) | |
853 | return -EINVAL; | |
854 | } | |
855 | ||
5eb5a52d JB |
856 | #ifndef CONFIG_MAC80211_MESH |
857 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
858 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
859 | #endif | |
860 | ||
1570ca59 JC |
861 | /* if the underlying driver supports mesh, mac80211 will (at least) |
862 | * provide routing of mesh authentication frames to userspace */ | |
863 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
864 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
865 | ||
a621fa4d JB |
866 | /* mac80211 supports control port protocol changing */ |
867 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
868 | ||
77965c97 JB |
869 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
870 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
871 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
872 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
873 | ||
ab13315a KV |
874 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
875 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
876 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
877 | ||
de95a54b JB |
878 | /* |
879 | * Calculate scan IE length -- we need this to alloc | |
880 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 881 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
882 | * information -- SSID is the driver's responsibility. |
883 | */ | |
dc9f48ce JM |
884 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
885 | 3 /* DS Params */; | |
5ef2d41a JB |
886 | if (supp_ht) |
887 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 888 | |
4bf88530 | 889 | if (supp_vht) { |
ba0afa2f | 890 | local->scan_ies_len += |
d4950281 | 891 | 2 + sizeof(struct ieee80211_vht_cap); |
ba0afa2f | 892 | |
4bf88530 JB |
893 | /* |
894 | * (for now at least), drivers wanting to use VHT must | |
895 | * support channel contexts, as they contain all the | |
896 | * necessary VHT information and the global hw config | |
897 | * doesn't (yet) | |
898 | */ | |
899 | if (WARN_ON(!local->use_chanctx)) { | |
900 | result = -EINVAL; | |
901 | goto fail_wiphy_register; | |
902 | } | |
903 | } | |
904 | ||
de95a54b JB |
905 | if (!local->ops->hw_scan) { |
906 | /* For hw_scan, driver needs to set these up. */ | |
907 | local->hw.wiphy->max_scan_ssids = 4; | |
908 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
909 | } | |
910 | ||
911 | /* | |
912 | * If the driver supports any scan IEs, then assume the | |
913 | * limit includes the IEs mac80211 will add, otherwise | |
914 | * leave it at zero and let the driver sort it out; we | |
915 | * still pass our IEs to the driver but userspace will | |
916 | * not be allowed to in that case. | |
917 | */ | |
918 | if (local->hw.wiphy->max_scan_ie_len) | |
919 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
920 | ||
3ffc2a90 JB |
921 | /* Set up cipher suites unless driver already did */ |
922 | if (!local->hw.wiphy->cipher_suites) { | |
923 | local->hw.wiphy->cipher_suites = cipher_suites; | |
924 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
925 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
926 | local->hw.wiphy->n_cipher_suites--; | |
927 | } | |
5daa8a8e | 928 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
929 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
930 | local->hw.wiphy->cipher_suites += 2; | |
931 | local->hw.wiphy->n_cipher_suites -= 2; | |
932 | } else { | |
933 | u32 *suites; | |
934 | int r, w = 0; | |
935 | ||
936 | /* Filter out WEP */ | |
937 | ||
938 | suites = kmemdup( | |
939 | local->hw.wiphy->cipher_suites, | |
940 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
941 | GFP_KERNEL); | |
cfff2f99 JB |
942 | if (!suites) { |
943 | result = -ENOMEM; | |
944 | goto fail_wiphy_register; | |
945 | } | |
3ffc2a90 JB |
946 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { |
947 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
948 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
949 | suite == WLAN_CIPHER_SUITE_WEP104) | |
950 | continue; | |
951 | suites[w++] = suite; | |
952 | } | |
953 | local->hw.wiphy->cipher_suites = suites; | |
954 | local->hw.wiphy->n_cipher_suites = w; | |
955 | local->wiphy_ciphers_allocated = true; | |
956 | } | |
5daa8a8e | 957 | } |
25e47c18 | 958 | |
21f83589 JB |
959 | if (!local->ops->remain_on_channel) |
960 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 961 | |
79f460ca LC |
962 | if (local->ops->sched_scan_start) |
963 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
964 | ||
dfe018bf AN |
965 | /* mac80211 based drivers don't support internal TDLS setup */ |
966 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
967 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
968 | ||
f0706e82 JB |
969 | result = wiphy_register(local->hw.wiphy); |
970 | if (result < 0) | |
2a519311 | 971 | goto fail_wiphy_register; |
f0706e82 | 972 | |
e2530083 JB |
973 | /* |
974 | * We use the number of queues for feature tests (QoS, HT) internally | |
975 | * so restrict them appropriately. | |
976 | */ | |
e2530083 JB |
977 | if (hw->queues > IEEE80211_MAX_QUEUES) |
978 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 979 | |
42935eca | 980 | local->workqueue = |
99b88a0e | 981 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 982 | if (!local->workqueue) { |
f0706e82 JB |
983 | result = -ENOMEM; |
984 | goto fail_workqueue; | |
985 | } | |
986 | ||
b306f453 JB |
987 | /* |
988 | * The hardware needs headroom for sending the frame, | |
989 | * and we need some headroom for passing the frame to monitor | |
990 | * interfaces, but never both at the same time. | |
991 | */ | |
33ccad35 | 992 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 993 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 994 | |
e9f207f0 JB |
995 | debugfs_hw_add(local); |
996 | ||
b446918b HS |
997 | /* |
998 | * if the driver doesn't specify a max listen interval we | |
999 | * use 5 which should be a safe default | |
1000 | */ | |
ea95bba4 | 1001 | if (local->hw.max_listen_interval == 0) |
b446918b | 1002 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
1003 | |
1004 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
1005 | ||
ff616381 | 1006 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 1007 | |
d4c4a9a1 | 1008 | result = ieee80211_wep_init(local); |
3473187d | 1009 | if (result < 0) |
0fb9a9ec JP |
1010 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
1011 | result); | |
d4c4a9a1 | 1012 | |
b57e6b56 MSS |
1013 | ieee80211_led_init(local); |
1014 | ||
f0706e82 | 1015 | rtnl_lock(); |
f0706e82 | 1016 | |
830f9038 JB |
1017 | result = ieee80211_init_rate_ctrl_alg(local, |
1018 | hw->rate_control_algorithm); | |
f0706e82 | 1019 | if (result < 0) { |
0fb9a9ec JP |
1020 | wiphy_debug(local->hw.wiphy, |
1021 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
1022 | goto fail_rate; |
1023 | } | |
1024 | ||
8dffff21 JB |
1025 | /* add one default STA interface if supported */ |
1026 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
1027 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
1028 | NL80211_IFTYPE_STATION, NULL); | |
1029 | if (result) | |
0fb9a9ec JP |
1030 | wiphy_warn(local->hw.wiphy, |
1031 | "Failed to add default virtual iface\n"); | |
8dffff21 | 1032 | } |
f0706e82 | 1033 | |
f0706e82 JB |
1034 | rtnl_unlock(); |
1035 | ||
10f644a4 JB |
1036 | local->network_latency_notifier.notifier_call = |
1037 | ieee80211_max_network_latency; | |
1038 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
1039 | &local->network_latency_notifier); | |
10f644a4 JB |
1040 | if (result) { |
1041 | rtnl_lock(); | |
1042 | goto fail_pm_qos; | |
1043 | } | |
1044 | ||
26b36cfe | 1045 | #ifdef CONFIG_INET |
2b2c009e JO |
1046 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
1047 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
1048 | if (result) | |
1049 | goto fail_ifa; | |
26b36cfe | 1050 | #endif |
2b2c009e | 1051 | |
4e6cbfd0 JL |
1052 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
1053 | local->hw.napi_weight); | |
1054 | ||
f0706e82 JB |
1055 | return 0; |
1056 | ||
93c08c32 | 1057 | #ifdef CONFIG_INET |
2b2c009e JO |
1058 | fail_ifa: |
1059 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
1060 | &local->network_latency_notifier); | |
1061 | rtnl_lock(); | |
93c08c32 | 1062 | #endif |
10f644a4 JB |
1063 | fail_pm_qos: |
1064 | ieee80211_led_exit(local); | |
1065 | ieee80211_remove_interfaces(local); | |
10f644a4 | 1066 | fail_rate: |
f0706e82 | 1067 | rtnl_unlock(); |
d4c4a9a1 | 1068 | ieee80211_wep_free(local); |
f0706e82 | 1069 | sta_info_stop(local); |
42935eca | 1070 | destroy_workqueue(local->workqueue); |
10f644a4 | 1071 | fail_workqueue: |
f0706e82 | 1072 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 1073 | fail_wiphy_register: |
3ffc2a90 JB |
1074 | if (local->wiphy_ciphers_allocated) |
1075 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 1076 | kfree(local->int_scan_req); |
f0706e82 JB |
1077 | return result; |
1078 | } | |
1079 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1080 | ||
f0706e82 JB |
1081 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1082 | { | |
1083 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1084 | |
1085 | tasklet_kill(&local->tx_pending_tasklet); | |
1086 | tasklet_kill(&local->tasklet); | |
1087 | ||
10f644a4 JB |
1088 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
1089 | &local->network_latency_notifier); | |
26b36cfe | 1090 | #ifdef CONFIG_INET |
2b2c009e | 1091 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1092 | #endif |
10f644a4 | 1093 | |
f0706e82 JB |
1094 | rtnl_lock(); |
1095 | ||
79010420 JB |
1096 | /* |
1097 | * At this point, interface list manipulations are fine | |
1098 | * because the driver cannot be handing us frames any | |
1099 | * more and the tasklet is killed. | |
1100 | */ | |
75636525 | 1101 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1102 | |
f0706e82 JB |
1103 | rtnl_unlock(); |
1104 | ||
258086a4 | 1105 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
1106 | cancel_work_sync(&local->reconfig_filter); |
1107 | ||
f0706e82 | 1108 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1109 | rate_control_deinitialize(local); |
1110 | ||
f64f9e71 JP |
1111 | if (skb_queue_len(&local->skb_queue) || |
1112 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1113 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1114 | skb_queue_purge(&local->skb_queue); |
1115 | skb_queue_purge(&local->skb_queue_unreliable); | |
24a8fdad | 1116 | skb_queue_purge(&local->rx_skb_queue); |
f0706e82 | 1117 | |
42935eca | 1118 | destroy_workqueue(local->workqueue); |
f0706e82 | 1119 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1120 | sta_info_stop(local); |
f0706e82 JB |
1121 | ieee80211_wep_free(local); |
1122 | ieee80211_led_exit(local); | |
5ba63533 | 1123 | kfree(local->int_scan_req); |
f0706e82 JB |
1124 | } |
1125 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1126 | ||
a729cff8 JB |
1127 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1128 | { | |
1129 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1130 | kfree_skb(p); | |
1131 | return 0; | |
1132 | } | |
1133 | ||
f0706e82 JB |
1134 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1135 | { | |
1136 | struct ieee80211_local *local = hw_to_local(hw); | |
1137 | ||
c771c9d8 | 1138 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1139 | mutex_destroy(&local->mtx); |
c771c9d8 | 1140 | |
3ffc2a90 JB |
1141 | if (local->wiphy_ciphers_allocated) |
1142 | kfree(local->hw.wiphy->cipher_suites); | |
1143 | ||
a729cff8 JB |
1144 | idr_for_each(&local->ack_status_frames, |
1145 | ieee80211_free_ack_frame, NULL); | |
1146 | idr_destroy(&local->ack_status_frames); | |
1147 | ||
f0706e82 JB |
1148 | wiphy_free(local->hw.wiphy); |
1149 | } | |
1150 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1151 | ||
f0706e82 JB |
1152 | static int __init ieee80211_init(void) |
1153 | { | |
1154 | struct sk_buff *skb; | |
1155 | int ret; | |
1156 | ||
e039fa4a JB |
1157 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1158 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1159 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1160 | |
cccf129f FF |
1161 | ret = rc80211_minstrel_init(); |
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
ec8aa669 FF |
1165 | ret = rc80211_minstrel_ht_init(); |
1166 | if (ret) | |
1167 | goto err_minstrel; | |
1168 | ||
4b475898 | 1169 | ret = rc80211_pid_init(); |
ad018375 | 1170 | if (ret) |
47846c9b | 1171 | goto err_pid; |
f0706e82 | 1172 | |
47846c9b JB |
1173 | ret = ieee80211_iface_init(); |
1174 | if (ret) | |
1175 | goto err_netdev; | |
e9f207f0 | 1176 | |
f0706e82 | 1177 | return 0; |
47846c9b JB |
1178 | err_netdev: |
1179 | rc80211_pid_exit(); | |
1180 | err_pid: | |
ec8aa669 FF |
1181 | rc80211_minstrel_ht_exit(); |
1182 | err_minstrel: | |
47846c9b JB |
1183 | rc80211_minstrel_exit(); |
1184 | ||
1185 | return ret; | |
f0706e82 JB |
1186 | } |
1187 | ||
f0706e82 JB |
1188 | static void __exit ieee80211_exit(void) |
1189 | { | |
4b475898 | 1190 | rc80211_pid_exit(); |
ec8aa669 | 1191 | rc80211_minstrel_ht_exit(); |
cccf129f | 1192 | rc80211_minstrel_exit(); |
ac71c691 | 1193 | |
f7a92144 LCC |
1194 | if (mesh_allocated) |
1195 | ieee80211s_stop(); | |
902acc78 | 1196 | |
47846c9b | 1197 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1198 | |
1199 | rcu_barrier(); | |
f0706e82 JB |
1200 | } |
1201 | ||
1202 | ||
ca9938fe | 1203 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1204 | module_exit(ieee80211_exit); |
1205 | ||
1206 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1207 | MODULE_LICENSE("GPL"); |