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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 | ||
cd6c524e | 50 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning)) |
8cc9a739 MW |
51 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
52 | ||
7be5086d JB |
53 | if (local->fif_probe_req || local->probe_req_reg) |
54 | new_flags |= FIF_PROBE_REQ; | |
55 | ||
8cc9a739 MW |
56 | if (local->fif_fcsfail) |
57 | new_flags |= FIF_FCSFAIL; | |
58 | ||
59 | if (local->fif_plcpfail) | |
60 | new_flags |= FIF_PLCPFAIL; | |
61 | ||
62 | if (local->fif_control) | |
63 | new_flags |= FIF_CONTROL; | |
64 | ||
65 | if (local->fif_other_bss) | |
66 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 67 | |
e3b90ca2 IP |
68 | if (local->fif_pspoll) |
69 | new_flags |= FIF_PSPOLL; | |
70 | ||
3ac64bee | 71 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
72 | changed_flags = local->filter_flags ^ new_flags; |
73 | ||
22bedad3 | 74 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
75 | spin_unlock_bh(&local->filter_lock); |
76 | ||
4150c572 JB |
77 | /* be a bit nasty */ |
78 | new_flags |= (1<<31); | |
79 | ||
3ac64bee | 80 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
81 | |
82 | WARN_ON(new_flags & (1<<31)); | |
83 | ||
84 | local->filter_flags = new_flags & ~(1<<31); | |
85 | } | |
86 | ||
3ac64bee JB |
87 | static void ieee80211_reconfig_filter(struct work_struct *work) |
88 | { | |
89 | struct ieee80211_local *local = | |
90 | container_of(work, struct ieee80211_local, reconfig_filter); | |
91 | ||
92 | ieee80211_configure_filter(local); | |
93 | } | |
94 | ||
e8975581 | 95 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) |
b2c258fb | 96 | { |
5e5202a4 | 97 | struct ieee80211_channel *chan; |
b2c258fb | 98 | int ret = 0; |
e8975581 | 99 | int power; |
094d05dc | 100 | enum nl80211_channel_type channel_type; |
ffd2778b | 101 | u32 offchannel_flag; |
f0706e82 | 102 | |
cb121bad JB |
103 | might_sleep(); |
104 | ||
ffd2778b | 105 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
5e5202a4 SG |
106 | if (local->scan_channel) { |
107 | chan = local->scan_channel; | |
4f2e9d91 BG |
108 | /* If scanning on oper channel, use whatever channel-type |
109 | * is currently in use. | |
110 | */ | |
111 | if (chan == local->oper_channel) | |
112 | channel_type = local->_oper_channel_type; | |
113 | else | |
114 | channel_type = NL80211_CHAN_NO_HT; | |
b23b025f | 115 | } else if (local->tmp_channel) { |
5e5202a4 | 116 | chan = local->tmp_channel; |
b8bc4b0a | 117 | channel_type = local->tmp_channel_type; |
72bdcf34 | 118 | } else { |
b2c258fb | 119 | chan = local->oper_channel; |
0aaffa9b | 120 | channel_type = local->_oper_channel_type; |
72bdcf34 | 121 | } |
b23b025f BG |
122 | |
123 | if (chan != local->oper_channel || | |
124 | channel_type != local->_oper_channel_type) | |
125 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; | |
126 | else | |
127 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
128 | ||
ffd2778b | 129 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 130 | |
ffd2778b | 131 | if (offchannel_flag || chan != local->hw.conf.channel || |
4797938c | 132 | channel_type != local->hw.conf.channel_type) { |
e8975581 | 133 | local->hw.conf.channel = chan; |
4797938c | 134 | local->hw.conf.channel_type = channel_type; |
e8975581 JB |
135 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
136 | } | |
8318d78a | 137 | |
0f78231b JB |
138 | if (!conf_is_ht(&local->hw.conf)) { |
139 | /* | |
140 | * mac80211.h documents that this is only valid | |
141 | * when the channel is set to an HT type, and | |
142 | * that otherwise STATIC is used. | |
143 | */ | |
144 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
145 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
146 | local->hw.conf.smps_mode = local->smps_mode; | |
147 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
148 | } | |
149 | ||
cd6c524e DT |
150 | if (test_bit(SCAN_SW_SCANNING, &local->scanning) || |
151 | test_bit(SCAN_HW_SCANNING, &local->scanning)) | |
e8975581 | 152 | power = chan->max_power; |
8318d78a | 153 | else |
a8302de9 | 154 | power = local->power_constr_level ? |
a48b13ac HW |
155 | min(chan->max_power, |
156 | (chan->max_reg_power - local->power_constr_level)) : | |
a8302de9 VT |
157 | chan->max_power; |
158 | ||
47afbaf5 | 159 | if (local->user_power_level >= 0) |
a8302de9 VT |
160 | power = min(power, local->user_power_level); |
161 | ||
e8975581 JB |
162 | if (local->hw.conf.power_level != power) { |
163 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
164 | local->hw.conf.power_level = power; | |
165 | } | |
b2c258fb | 166 | |
e8975581 | 167 | if (changed && local->open_count) { |
24487981 | 168 | ret = drv_config(local, changed); |
d73782fd | 169 | /* |
447107fb | 170 | * Goal: |
d73782fd JB |
171 | * HW reconfiguration should never fail, the driver has told |
172 | * us what it can support so it should live up to that promise. | |
447107fb RC |
173 | * |
174 | * Current status: | |
175 | * rfkill is not integrated with mac80211 and a | |
176 | * configuration command can thus fail if hardware rfkill | |
177 | * is enabled | |
178 | * | |
179 | * FIXME: integrate rfkill with mac80211 and then add this | |
180 | * WARN_ON() back | |
181 | * | |
d73782fd | 182 | */ |
447107fb | 183 | /* WARN_ON(ret); */ |
d73782fd | 184 | } |
f0706e82 | 185 | |
b2c258fb JB |
186 | return ret; |
187 | } | |
f0706e82 | 188 | |
471b3efd JB |
189 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
190 | u32 changed) | |
d9430a32 | 191 | { |
471b3efd | 192 | struct ieee80211_local *local = sdata->local; |
9cef8737 | 193 | static const u8 zero[ETH_ALEN] = { 0 }; |
471b3efd JB |
194 | |
195 | if (!changed) | |
196 | return; | |
197 | ||
9cef8737 | 198 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
66e67e41 | 199 | sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid; |
9cef8737 | 200 | } else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
2d0ddec5 JB |
201 | sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid; |
202 | else if (sdata->vif.type == NL80211_IFTYPE_AP) | |
47846c9b | 203 | sdata->vif.bss_conf.bssid = sdata->vif.addr; |
1be7fe8d BJ |
204 | else if (sdata->vif.type == NL80211_IFTYPE_WDS) |
205 | sdata->vif.bss_conf.bssid = NULL; | |
2d0ddec5 | 206 | else if (ieee80211_vif_is_mesh(&sdata->vif)) { |
2d0ddec5 JB |
207 | sdata->vif.bss_conf.bssid = zero; |
208 | } else { | |
209 | WARN_ON(1); | |
210 | return; | |
211 | } | |
212 | ||
213 | switch (sdata->vif.type) { | |
214 | case NL80211_IFTYPE_AP: | |
215 | case NL80211_IFTYPE_ADHOC: | |
1be7fe8d | 216 | case NL80211_IFTYPE_WDS: |
2d0ddec5 JB |
217 | case NL80211_IFTYPE_MESH_POINT: |
218 | break; | |
219 | default: | |
220 | /* do not warn to simplify caller in scan.c */ | |
221 | changed &= ~BSS_CHANGED_BEACON_ENABLED; | |
222 | if (WARN_ON(changed & BSS_CHANGED_BEACON)) | |
223 | return; | |
224 | break; | |
225 | } | |
226 | ||
227 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
9607e6b6 | 228 | if (local->quiescing || !ieee80211_sdata_running(sdata) || |
b23b025f | 229 | test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state)) { |
2d0ddec5 JB |
230 | sdata->vif.bss_conf.enable_beacon = false; |
231 | } else { | |
232 | /* | |
233 | * Beacon should be enabled, but AP mode must | |
234 | * check whether there is a beacon configured. | |
235 | */ | |
236 | switch (sdata->vif.type) { | |
237 | case NL80211_IFTYPE_AP: | |
238 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 239 | !!sdata->u.ap.beacon; |
2d0ddec5 JB |
240 | break; |
241 | case NL80211_IFTYPE_ADHOC: | |
242 | sdata->vif.bss_conf.enable_beacon = | |
0379185b | 243 | !!sdata->u.ibss.presp; |
2d0ddec5 | 244 | break; |
7659a193 | 245 | #ifdef CONFIG_MAC80211_MESH |
2d0ddec5 | 246 | case NL80211_IFTYPE_MESH_POINT: |
29cbe68c JB |
247 | sdata->vif.bss_conf.enable_beacon = |
248 | !!sdata->u.mesh.mesh_id_len; | |
2d0ddec5 | 249 | break; |
7659a193 | 250 | #endif |
2d0ddec5 JB |
251 | default: |
252 | /* not reached */ | |
253 | WARN_ON(1); | |
254 | break; | |
255 | } | |
256 | } | |
257 | } | |
258 | ||
12375ef9 | 259 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
260 | } |
261 | ||
f698d856 | 262 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 263 | { |
bda3933a JB |
264 | sdata->vif.bss_conf.use_cts_prot = false; |
265 | sdata->vif.bss_conf.use_short_preamble = false; | |
266 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
267 | return BSS_CHANGED_ERP_CTS_PROT | |
268 | BSS_CHANGED_ERP_PREAMBLE | | |
269 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
270 | } |
271 | ||
f0706e82 JB |
272 | static void ieee80211_tasklet_handler(unsigned long data) |
273 | { | |
274 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
37fbd908 JB |
275 | struct sta_info *sta, *tmp; |
276 | struct skb_eosp_msg_data *eosp_data; | |
f0706e82 | 277 | struct sk_buff *skb; |
f0706e82 JB |
278 | |
279 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
280 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
281 | switch (skb->pkt_type) { | |
282 | case IEEE80211_RX_MSG: | |
51fb61e7 | 283 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
284 | * netstack. */ |
285 | skb->pkt_type = 0; | |
005e472b | 286 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
287 | break; |
288 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 289 | skb->pkt_type = 0; |
005e472b | 290 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 291 | break; |
37fbd908 JB |
292 | case IEEE80211_EOSP_MSG: |
293 | eosp_data = (void *)skb->cb; | |
294 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
295 | /* skip wrong virtual interface */ | |
296 | if (memcmp(eosp_data->iface, | |
297 | sta->sdata->vif.addr, ETH_ALEN)) | |
298 | continue; | |
299 | clear_sta_flag(sta, WLAN_STA_SP); | |
300 | break; | |
301 | } | |
302 | dev_kfree_skb(skb); | |
303 | break; | |
f4ea83dd | 304 | default: |
5e3f3089 LF |
305 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
306 | skb->pkt_type); | |
f0706e82 JB |
307 | dev_kfree_skb(skb); |
308 | break; | |
309 | } | |
310 | } | |
311 | } | |
312 | ||
f2753ddb JB |
313 | static void ieee80211_restart_work(struct work_struct *work) |
314 | { | |
315 | struct ieee80211_local *local = | |
316 | container_of(work, struct ieee80211_local, restart_work); | |
317 | ||
bc86863d SG |
318 | /* wait for scan work complete */ |
319 | flush_workqueue(local->workqueue); | |
320 | ||
321 | mutex_lock(&local->mtx); | |
79f460ca LC |
322 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || |
323 | local->sched_scanning, | |
bc86863d SG |
324 | "%s called with hardware scan in progress\n", __func__); |
325 | mutex_unlock(&local->mtx); | |
326 | ||
f2753ddb | 327 | rtnl_lock(); |
4136c422 | 328 | ieee80211_scan_cancel(local); |
f2753ddb JB |
329 | ieee80211_reconfig(local); |
330 | rtnl_unlock(); | |
331 | } | |
332 | ||
333 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
334 | { | |
335 | struct ieee80211_local *local = hw_to_local(hw); | |
336 | ||
b5878a2d JB |
337 | trace_api_restart_hw(local); |
338 | ||
b196d031 MB |
339 | wiphy_info(hw->wiphy, |
340 | "Hardware restart was requested\n"); | |
341 | ||
18145c69 | 342 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
343 | ieee80211_stop_queues_by_reason(hw, |
344 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
345 | ||
346 | schedule_work(&local->restart_work); | |
347 | } | |
348 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
349 | ||
0f78231b JB |
350 | static void ieee80211_recalc_smps_work(struct work_struct *work) |
351 | { | |
352 | struct ieee80211_local *local = | |
353 | container_of(work, struct ieee80211_local, recalc_smps); | |
354 | ||
355 | mutex_lock(&local->iflist_mtx); | |
025e6be2 | 356 | ieee80211_recalc_smps(local); |
0f78231b JB |
357 | mutex_unlock(&local->iflist_mtx); |
358 | } | |
359 | ||
26b36cfe | 360 | #ifdef CONFIG_INET |
2b2c009e JO |
361 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
362 | unsigned long data, void *arg) | |
363 | { | |
364 | struct in_ifaddr *ifa = arg; | |
365 | struct ieee80211_local *local = | |
366 | container_of(nb, struct ieee80211_local, | |
367 | ifa_notifier); | |
368 | struct net_device *ndev = ifa->ifa_dev->dev; | |
369 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 370 | struct in_device *idev; |
2b2c009e | 371 | struct ieee80211_sub_if_data *sdata; |
68542962 | 372 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 373 | struct ieee80211_if_managed *ifmgd; |
68542962 | 374 | int c = 0; |
2b2c009e JO |
375 | |
376 | /* Make sure it's our interface that got changed */ | |
377 | if (!wdev) | |
378 | return NOTIFY_DONE; | |
379 | ||
380 | if (wdev->wiphy != local->hw.wiphy) | |
381 | return NOTIFY_DONE; | |
382 | ||
2b2c009e | 383 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 384 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
385 | |
386 | /* ARP filtering is only supported in managed mode */ | |
387 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
388 | return NOTIFY_DONE; | |
389 | ||
95ae6b22 | 390 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
391 | if (!idev) |
392 | return NOTIFY_DONE; | |
393 | ||
2b2c009e JO |
394 | ifmgd = &sdata->u.mgd; |
395 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
396 | |
397 | /* Copy the addresses to the bss_conf list */ | |
398 | ifa = idev->ifa_list; | |
399 | while (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN && ifa) { | |
400 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
401 | ifa = ifa->ifa_next; | |
402 | c++; | |
403 | } | |
404 | ||
405 | /* If not all addresses fit the list, disable filtering */ | |
406 | if (ifa) { | |
407 | sdata->arp_filter_state = false; | |
408 | c = 0; | |
409 | } else { | |
410 | sdata->arp_filter_state = true; | |
411 | } | |
412 | bss_conf->arp_addr_cnt = c; | |
413 | ||
53d69c39 | 414 | /* Configure driver only if associated (which also implies it is up) */ |
68542962 JO |
415 | if (ifmgd->associated) { |
416 | bss_conf->arp_filter_enabled = sdata->arp_filter_state; | |
417 | ieee80211_bss_info_change_notify(sdata, | |
418 | BSS_CHANGED_ARP_FILTER); | |
419 | } | |
420 | ||
2b2c009e JO |
421 | mutex_unlock(&ifmgd->mtx); |
422 | ||
423 | return NOTIFY_DONE; | |
424 | } | |
26b36cfe | 425 | #endif |
2b2c009e | 426 | |
4e6cbfd0 JL |
427 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
428 | { | |
429 | struct ieee80211_local *local = | |
430 | container_of(napi, struct ieee80211_local, napi); | |
431 | ||
432 | return local->ops->napi_poll(&local->hw, budget); | |
433 | } | |
434 | ||
435 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
436 | { | |
437 | struct ieee80211_local *local = hw_to_local(hw); | |
438 | ||
439 | napi_schedule(&local->napi); | |
440 | } | |
441 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
442 | ||
443 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
444 | { | |
445 | struct ieee80211_local *local = hw_to_local(hw); | |
446 | ||
447 | napi_complete(&local->napi); | |
448 | } | |
449 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
450 | ||
2e161f78 JB |
451 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
452 | static const struct ieee80211_txrx_stypes | |
453 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
454 | [NL80211_IFTYPE_ADHOC] = { | |
455 | .tx = 0xffff, | |
456 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4), | |
457 | }, | |
458 | [NL80211_IFTYPE_STATION] = { | |
459 | .tx = 0xffff, | |
460 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
461 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
462 | }, | |
463 | [NL80211_IFTYPE_AP] = { | |
464 | .tx = 0xffff, | |
465 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
466 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
467 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
468 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
469 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
470 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
471 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
472 | }, | |
473 | [NL80211_IFTYPE_AP_VLAN] = { | |
474 | /* copy AP */ | |
475 | .tx = 0xffff, | |
476 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
477 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
478 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
479 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
480 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
481 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
482 | BIT(IEEE80211_STYPE_ACTION >> 4), |
483 | }, | |
484 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
485 | .tx = 0xffff, | |
486 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
487 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
488 | }, | |
489 | [NL80211_IFTYPE_P2P_GO] = { | |
490 | .tx = 0xffff, | |
491 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
492 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
493 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
494 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
495 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
496 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
497 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
498 | }, | |
c7108a71 JC |
499 | [NL80211_IFTYPE_MESH_POINT] = { |
500 | .tx = 0xffff, | |
71839121 JC |
501 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
502 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
503 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 504 | }, |
2e161f78 JB |
505 | }; |
506 | ||
ef96a842 BG |
507 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
508 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
509 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
510 | ||
511 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
512 | IEEE80211_HT_CAP_MAX_AMSDU | | |
513 | IEEE80211_HT_CAP_SGI_40), | |
514 | .mcs = { | |
515 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
516 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
517 | }, | |
518 | }; | |
519 | ||
f0706e82 JB |
520 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
521 | const struct ieee80211_ops *ops) | |
522 | { | |
f0706e82 | 523 | struct ieee80211_local *local; |
96f5e66e | 524 | int priv_size, i; |
f0706e82 JB |
525 | struct wiphy *wiphy; |
526 | ||
f09603a2 JB |
527 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
528 | return NULL; | |
529 | ||
f0706e82 JB |
530 | /* Ensure 32-byte alignment of our private data and hw private data. |
531 | * We use the wiphy priv data for both our ieee80211_local and for | |
532 | * the driver's private data | |
533 | * | |
534 | * In memory it'll be like this: | |
535 | * | |
536 | * +-------------------------+ | |
537 | * | struct wiphy | | |
538 | * +-------------------------+ | |
539 | * | struct ieee80211_local | | |
540 | * +-------------------------+ | |
541 | * | driver's private data | | |
542 | * +-------------------------+ | |
543 | * | |
544 | */ | |
1ce8e7b5 | 545 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
546 | |
547 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
548 | ||
549 | if (!wiphy) | |
550 | return NULL; | |
551 | ||
2e161f78 JB |
552 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
553 | ||
207aba60 JB |
554 | wiphy->privid = mac80211_wiphy_privid; |
555 | ||
9bc383de JB |
556 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
557 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 558 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 JB |
559 | WIPHY_FLAG_REPORTS_OBSS | |
560 | WIPHY_FLAG_OFFCHAN_TX | | |
561 | WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 562 | |
13c40c54 AS |
563 | wiphy->features = NL80211_FEATURE_SK_TX_STATUS | |
564 | NL80211_FEATURE_HT_IBSS; | |
a729cff8 | 565 | |
207aba60 JB |
566 | if (!ops->set_key) |
567 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 568 | |
0c1ad2ca | 569 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
570 | |
571 | local = wiphy_priv(wiphy); | |
de95a54b | 572 | |
f0706e82 JB |
573 | local->hw.wiphy = wiphy; |
574 | ||
1ce8e7b5 | 575 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 | 576 | |
11127e91 | 577 | BUG_ON(!ops->tx && !ops->tx_frags); |
4150c572 JB |
578 | BUG_ON(!ops->start); |
579 | BUG_ON(!ops->stop); | |
4480f15c JB |
580 | BUG_ON(!ops->config); |
581 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
582 | BUG_ON(!ops->remove_interface); |
583 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
584 | local->ops = ops; |
585 | ||
e6a9854b JB |
586 | /* set up some defaults */ |
587 | local->hw.queues = 1; | |
588 | local->hw.max_rates = 1; | |
78be49ec | 589 | local->hw.max_report_rates = 0; |
df6ba5d8 | 590 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 591 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
b9a5f8ca JM |
592 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
593 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
c428c892 | 594 | local->user_power_level = -1; |
ef96a842 | 595 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
f0706e82 | 596 | |
79010420 | 597 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
598 | |
599 | __hw_addr_init(&local->mc_list); | |
600 | ||
c771c9d8 | 601 | mutex_init(&local->iflist_mtx); |
a1699b75 | 602 | mutex_init(&local->mtx); |
f0706e82 | 603 | |
ad0e2b5a | 604 | mutex_init(&local->key_mtx); |
3b8d81e0 | 605 | spin_lock_init(&local->filter_lock); |
ce7c9111 KV |
606 | spin_lock_init(&local->queue_stop_reason_lock); |
607 | ||
681c4d07 JB |
608 | /* |
609 | * The rx_skb_queue is only accessed from tasklets, | |
610 | * but other SKB queues are used from within IRQ | |
611 | * context. Therefore, this one needs a different | |
612 | * locking class so our direct, non-irq-safe use of | |
613 | * the queue's lock doesn't throw lockdep warnings. | |
614 | */ | |
615 | skb_queue_head_init_class(&local->rx_skb_queue, | |
616 | &ieee80211_rx_skb_queue_class); | |
24a8fdad | 617 | |
c2b13452 | 618 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 619 | |
af6b6374 JB |
620 | ieee80211_work_init(local); |
621 | ||
f2753ddb JB |
622 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
623 | ||
3ac64bee | 624 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b JB |
625 | INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); |
626 | local->smps_mode = IEEE80211_SMPS_OFF; | |
3ac64bee | 627 | |
520eb820 KV |
628 | INIT_WORK(&local->dynamic_ps_enable_work, |
629 | ieee80211_dynamic_ps_enable_work); | |
630 | INIT_WORK(&local->dynamic_ps_disable_work, | |
631 | ieee80211_dynamic_ps_disable_work); | |
632 | setup_timer(&local->dynamic_ps_timer, | |
633 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
634 | ||
85a9994a LC |
635 | INIT_WORK(&local->sched_scan_stopped_work, |
636 | ieee80211_sched_scan_stopped_work); | |
637 | ||
a729cff8 JB |
638 | spin_lock_init(&local->ack_status_lock); |
639 | idr_init(&local->ack_status_frames); | |
640 | /* preallocate at least one entry */ | |
641 | idr_pre_get(&local->ack_status_frames, GFP_KERNEL); | |
642 | ||
f0706e82 JB |
643 | sta_info_init(local); |
644 | ||
a6a67db2 | 645 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 646 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
647 | atomic_set(&local->agg_queue_stop[i], 0); |
648 | } | |
f0706e82 JB |
649 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
650 | (unsigned long)local); | |
f0706e82 JB |
651 | |
652 | tasklet_init(&local->tasklet, | |
653 | ieee80211_tasklet_handler, | |
654 | (unsigned long) local); | |
f0706e82 JB |
655 | |
656 | skb_queue_head_init(&local->skb_queue); | |
657 | skb_queue_head_init(&local->skb_queue_unreliable); | |
658 | ||
4e6cbfd0 JL |
659 | /* init dummy netdev for use w/ NAPI */ |
660 | init_dummy_netdev(&local->napi_dev); | |
661 | ||
fe67c913 JB |
662 | ieee80211_led_names(local); |
663 | ||
21f83589 JB |
664 | ieee80211_hw_roc_setup(local); |
665 | ||
005e472b | 666 | return &local->hw; |
f0706e82 JB |
667 | } |
668 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
669 | ||
670 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
671 | { | |
672 | struct ieee80211_local *local = hw_to_local(hw); | |
7527a782 | 673 | int result, i; |
8318d78a | 674 | enum ieee80211_band band; |
be4a4b6a | 675 | int channels, max_bitrates; |
5ef2d41a | 676 | bool supp_ht; |
25e47c18 | 677 | static const u32 cipher_suites[] = { |
5daa8a8e | 678 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
679 | WLAN_CIPHER_SUITE_WEP40, |
680 | WLAN_CIPHER_SUITE_WEP104, | |
681 | WLAN_CIPHER_SUITE_TKIP, | |
682 | WLAN_CIPHER_SUITE_CCMP, | |
683 | ||
684 | /* keep last -- depends on hw flags! */ | |
685 | WLAN_CIPHER_SUITE_AES_CMAC | |
686 | }; | |
8318d78a | 687 | |
38bb3e9d LF |
688 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) |
689 | #ifdef CONFIG_PM | |
690 | && (!local->ops->suspend || !local->ops->resume) | |
691 | #endif | |
692 | ) | |
eecc4800 JB |
693 | return -EINVAL; |
694 | ||
885bd8ec EP |
695 | if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan) |
696 | return -EINVAL; | |
697 | ||
78be49ec HS |
698 | if (hw->max_report_rates == 0) |
699 | hw->max_report_rates = hw->max_rates; | |
700 | ||
8318d78a JB |
701 | /* |
702 | * generic code guarantees at least one band, | |
703 | * set this very early because much code assumes | |
704 | * that hw.conf.channel is assigned | |
705 | */ | |
2a519311 | 706 | channels = 0; |
de95a54b | 707 | max_bitrates = 0; |
5ef2d41a | 708 | supp_ht = false; |
8318d78a JB |
709 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
710 | struct ieee80211_supported_band *sband; | |
711 | ||
712 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
713 | if (!sband) |
714 | continue; | |
715 | if (!local->oper_channel) { | |
8318d78a JB |
716 | /* init channel we're on */ |
717 | local->hw.conf.channel = | |
58905ca5 JB |
718 | local->oper_channel = &sband->channels[0]; |
719 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; | |
8318d78a | 720 | } |
de95a54b JB |
721 | channels += sband->n_channels; |
722 | ||
723 | if (max_bitrates < sband->n_bitrates) | |
724 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 725 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
8318d78a | 726 | } |
f0706e82 | 727 | |
5ba63533 JB |
728 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
729 | sizeof(void *) * channels, GFP_KERNEL); | |
730 | if (!local->int_scan_req) | |
2a519311 JB |
731 | return -ENOMEM; |
732 | ||
c72e8d33 SW |
733 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
734 | if (!local->hw.wiphy->bands[band]) | |
735 | continue; | |
736 | local->int_scan_req->rates[band] = (u32) -1; | |
737 | } | |
738 | ||
f59ac048 | 739 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
740 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
741 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
742 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
743 | } | |
f59ac048 LR |
744 | |
745 | /* mac80211 always supports monitor */ | |
7527a782 JB |
746 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
747 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
748 | ||
8e621fc9 JB |
749 | /* |
750 | * mac80211 doesn't support more than 1 channel, and also not more | |
751 | * than one IBSS interface | |
752 | */ | |
753 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { | |
754 | const struct ieee80211_iface_combination *c; | |
755 | int j; | |
756 | ||
757 | c = &hw->wiphy->iface_combinations[i]; | |
758 | ||
759 | if (c->num_different_channels > 1) | |
7527a782 | 760 | return -EINVAL; |
f59ac048 | 761 | |
8e621fc9 JB |
762 | for (j = 0; j < c->n_limits; j++) |
763 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
764 | c->limits[j].max > 1) | |
765 | return -EINVAL; | |
766 | } | |
767 | ||
5eb5a52d JB |
768 | #ifndef CONFIG_MAC80211_MESH |
769 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
770 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
771 | #endif | |
772 | ||
1570ca59 JC |
773 | /* if the underlying driver supports mesh, mac80211 will (at least) |
774 | * provide routing of mesh authentication frames to userspace */ | |
775 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
776 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
777 | ||
a621fa4d JB |
778 | /* mac80211 supports control port protocol changing */ |
779 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
780 | ||
77965c97 JB |
781 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
782 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
783 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
784 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
785 | ||
ab13315a KV |
786 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
787 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
788 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
789 | ||
de95a54b JB |
790 | /* |
791 | * Calculate scan IE length -- we need this to alloc | |
792 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 793 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
794 | * information -- SSID is the driver's responsibility. |
795 | */ | |
dc9f48ce JM |
796 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
797 | 3 /* DS Params */; | |
5ef2d41a JB |
798 | if (supp_ht) |
799 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b JB |
800 | |
801 | if (!local->ops->hw_scan) { | |
802 | /* For hw_scan, driver needs to set these up. */ | |
803 | local->hw.wiphy->max_scan_ssids = 4; | |
804 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
805 | } | |
806 | ||
807 | /* | |
808 | * If the driver supports any scan IEs, then assume the | |
809 | * limit includes the IEs mac80211 will add, otherwise | |
810 | * leave it at zero and let the driver sort it out; we | |
811 | * still pass our IEs to the driver but userspace will | |
812 | * not be allowed to in that case. | |
813 | */ | |
814 | if (local->hw.wiphy->max_scan_ie_len) | |
815 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
816 | ||
3ffc2a90 JB |
817 | /* Set up cipher suites unless driver already did */ |
818 | if (!local->hw.wiphy->cipher_suites) { | |
819 | local->hw.wiphy->cipher_suites = cipher_suites; | |
820 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
821 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
822 | local->hw.wiphy->n_cipher_suites--; | |
823 | } | |
5daa8a8e | 824 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
825 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
826 | local->hw.wiphy->cipher_suites += 2; | |
827 | local->hw.wiphy->n_cipher_suites -= 2; | |
828 | } else { | |
829 | u32 *suites; | |
830 | int r, w = 0; | |
831 | ||
832 | /* Filter out WEP */ | |
833 | ||
834 | suites = kmemdup( | |
835 | local->hw.wiphy->cipher_suites, | |
836 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
837 | GFP_KERNEL); | |
838 | if (!suites) | |
839 | return -ENOMEM; | |
840 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
841 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
842 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
843 | suite == WLAN_CIPHER_SUITE_WEP104) | |
844 | continue; | |
845 | suites[w++] = suite; | |
846 | } | |
847 | local->hw.wiphy->cipher_suites = suites; | |
848 | local->hw.wiphy->n_cipher_suites = w; | |
849 | local->wiphy_ciphers_allocated = true; | |
850 | } | |
5daa8a8e | 851 | } |
25e47c18 | 852 | |
21f83589 JB |
853 | if (!local->ops->remain_on_channel) |
854 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 855 | |
79f460ca LC |
856 | if (local->ops->sched_scan_start) |
857 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
858 | ||
dfe018bf AN |
859 | /* mac80211 based drivers don't support internal TDLS setup */ |
860 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
861 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
862 | ||
f0706e82 JB |
863 | result = wiphy_register(local->hw.wiphy); |
864 | if (result < 0) | |
2a519311 | 865 | goto fail_wiphy_register; |
f0706e82 | 866 | |
e2530083 JB |
867 | /* |
868 | * We use the number of queues for feature tests (QoS, HT) internally | |
869 | * so restrict them appropriately. | |
870 | */ | |
e2530083 JB |
871 | if (hw->queues > IEEE80211_MAX_QUEUES) |
872 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 873 | |
42935eca | 874 | local->workqueue = |
99b88a0e | 875 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 876 | if (!local->workqueue) { |
f0706e82 JB |
877 | result = -ENOMEM; |
878 | goto fail_workqueue; | |
879 | } | |
880 | ||
b306f453 JB |
881 | /* |
882 | * The hardware needs headroom for sending the frame, | |
883 | * and we need some headroom for passing the frame to monitor | |
884 | * interfaces, but never both at the same time. | |
885 | */ | |
33ccad35 | 886 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 887 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 888 | |
e9f207f0 JB |
889 | debugfs_hw_add(local); |
890 | ||
b446918b HS |
891 | /* |
892 | * if the driver doesn't specify a max listen interval we | |
893 | * use 5 which should be a safe default | |
894 | */ | |
ea95bba4 | 895 | if (local->hw.max_listen_interval == 0) |
b446918b | 896 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
897 | |
898 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
899 | ||
ff616381 | 900 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 901 | |
d4c4a9a1 | 902 | result = ieee80211_wep_init(local); |
3473187d | 903 | if (result < 0) |
0fb9a9ec JP |
904 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
905 | result); | |
d4c4a9a1 | 906 | |
b57e6b56 MSS |
907 | ieee80211_led_init(local); |
908 | ||
f0706e82 | 909 | rtnl_lock(); |
f0706e82 | 910 | |
830f9038 JB |
911 | result = ieee80211_init_rate_ctrl_alg(local, |
912 | hw->rate_control_algorithm); | |
f0706e82 | 913 | if (result < 0) { |
0fb9a9ec JP |
914 | wiphy_debug(local->hw.wiphy, |
915 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
916 | goto fail_rate; |
917 | } | |
918 | ||
8dffff21 JB |
919 | /* add one default STA interface if supported */ |
920 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
921 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
922 | NL80211_IFTYPE_STATION, NULL); | |
923 | if (result) | |
0fb9a9ec JP |
924 | wiphy_warn(local->hw.wiphy, |
925 | "Failed to add default virtual iface\n"); | |
8dffff21 | 926 | } |
f0706e82 | 927 | |
f0706e82 JB |
928 | rtnl_unlock(); |
929 | ||
10f644a4 JB |
930 | local->network_latency_notifier.notifier_call = |
931 | ieee80211_max_network_latency; | |
932 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
933 | &local->network_latency_notifier); | |
10f644a4 JB |
934 | if (result) { |
935 | rtnl_lock(); | |
936 | goto fail_pm_qos; | |
937 | } | |
938 | ||
26b36cfe | 939 | #ifdef CONFIG_INET |
2b2c009e JO |
940 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
941 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
942 | if (result) | |
943 | goto fail_ifa; | |
26b36cfe | 944 | #endif |
2b2c009e | 945 | |
4e6cbfd0 JL |
946 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
947 | local->hw.napi_weight); | |
948 | ||
f0706e82 JB |
949 | return 0; |
950 | ||
93c08c32 | 951 | #ifdef CONFIG_INET |
2b2c009e JO |
952 | fail_ifa: |
953 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
954 | &local->network_latency_notifier); | |
955 | rtnl_lock(); | |
93c08c32 | 956 | #endif |
10f644a4 JB |
957 | fail_pm_qos: |
958 | ieee80211_led_exit(local); | |
959 | ieee80211_remove_interfaces(local); | |
10f644a4 | 960 | fail_rate: |
f0706e82 | 961 | rtnl_unlock(); |
d4c4a9a1 | 962 | ieee80211_wep_free(local); |
f0706e82 | 963 | sta_info_stop(local); |
42935eca | 964 | destroy_workqueue(local->workqueue); |
10f644a4 | 965 | fail_workqueue: |
f0706e82 | 966 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 967 | fail_wiphy_register: |
3ffc2a90 JB |
968 | if (local->wiphy_ciphers_allocated) |
969 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 970 | kfree(local->int_scan_req); |
f0706e82 JB |
971 | return result; |
972 | } | |
973 | EXPORT_SYMBOL(ieee80211_register_hw); | |
974 | ||
f0706e82 JB |
975 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
976 | { | |
977 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
978 | |
979 | tasklet_kill(&local->tx_pending_tasklet); | |
980 | tasklet_kill(&local->tasklet); | |
981 | ||
10f644a4 JB |
982 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
983 | &local->network_latency_notifier); | |
26b36cfe | 984 | #ifdef CONFIG_INET |
2b2c009e | 985 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 986 | #endif |
10f644a4 | 987 | |
f0706e82 JB |
988 | rtnl_lock(); |
989 | ||
79010420 JB |
990 | /* |
991 | * At this point, interface list manipulations are fine | |
992 | * because the driver cannot be handing us frames any | |
993 | * more and the tasklet is killed. | |
994 | */ | |
75636525 | 995 | ieee80211_remove_interfaces(local); |
5b2812e9 | 996 | |
f0706e82 JB |
997 | rtnl_unlock(); |
998 | ||
071249b1 JB |
999 | /* |
1000 | * Now all work items will be gone, but the | |
1001 | * timer might still be armed, so delete it | |
1002 | */ | |
1003 | del_timer_sync(&local->work_timer); | |
1004 | ||
258086a4 | 1005 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
1006 | cancel_work_sync(&local->reconfig_filter); |
1007 | ||
f0706e82 | 1008 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1009 | rate_control_deinitialize(local); |
1010 | ||
f64f9e71 JP |
1011 | if (skb_queue_len(&local->skb_queue) || |
1012 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1013 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1014 | skb_queue_purge(&local->skb_queue); |
1015 | skb_queue_purge(&local->skb_queue_unreliable); | |
24a8fdad | 1016 | skb_queue_purge(&local->rx_skb_queue); |
f0706e82 | 1017 | |
42935eca | 1018 | destroy_workqueue(local->workqueue); |
f0706e82 | 1019 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1020 | sta_info_stop(local); |
f0706e82 JB |
1021 | ieee80211_wep_free(local); |
1022 | ieee80211_led_exit(local); | |
5ba63533 | 1023 | kfree(local->int_scan_req); |
f0706e82 JB |
1024 | } |
1025 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1026 | ||
a729cff8 JB |
1027 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1028 | { | |
1029 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1030 | kfree_skb(p); | |
1031 | return 0; | |
1032 | } | |
1033 | ||
f0706e82 JB |
1034 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1035 | { | |
1036 | struct ieee80211_local *local = hw_to_local(hw); | |
1037 | ||
c771c9d8 | 1038 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1039 | mutex_destroy(&local->mtx); |
c771c9d8 | 1040 | |
3ffc2a90 JB |
1041 | if (local->wiphy_ciphers_allocated) |
1042 | kfree(local->hw.wiphy->cipher_suites); | |
1043 | ||
a729cff8 JB |
1044 | idr_for_each(&local->ack_status_frames, |
1045 | ieee80211_free_ack_frame, NULL); | |
1046 | idr_destroy(&local->ack_status_frames); | |
1047 | ||
f0706e82 JB |
1048 | wiphy_free(local->hw.wiphy); |
1049 | } | |
1050 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1051 | ||
f0706e82 JB |
1052 | static int __init ieee80211_init(void) |
1053 | { | |
1054 | struct sk_buff *skb; | |
1055 | int ret; | |
1056 | ||
e039fa4a JB |
1057 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1058 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1059 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1060 | |
cccf129f FF |
1061 | ret = rc80211_minstrel_init(); |
1062 | if (ret) | |
1063 | return ret; | |
1064 | ||
ec8aa669 FF |
1065 | ret = rc80211_minstrel_ht_init(); |
1066 | if (ret) | |
1067 | goto err_minstrel; | |
1068 | ||
4b475898 | 1069 | ret = rc80211_pid_init(); |
ad018375 | 1070 | if (ret) |
47846c9b | 1071 | goto err_pid; |
f0706e82 | 1072 | |
47846c9b JB |
1073 | ret = ieee80211_iface_init(); |
1074 | if (ret) | |
1075 | goto err_netdev; | |
e9f207f0 | 1076 | |
f0706e82 | 1077 | return 0; |
47846c9b JB |
1078 | err_netdev: |
1079 | rc80211_pid_exit(); | |
1080 | err_pid: | |
ec8aa669 FF |
1081 | rc80211_minstrel_ht_exit(); |
1082 | err_minstrel: | |
47846c9b JB |
1083 | rc80211_minstrel_exit(); |
1084 | ||
1085 | return ret; | |
f0706e82 JB |
1086 | } |
1087 | ||
f0706e82 JB |
1088 | static void __exit ieee80211_exit(void) |
1089 | { | |
4b475898 | 1090 | rc80211_pid_exit(); |
ec8aa669 | 1091 | rc80211_minstrel_ht_exit(); |
cccf129f | 1092 | rc80211_minstrel_exit(); |
ac71c691 | 1093 | |
f7a92144 LCC |
1094 | if (mesh_allocated) |
1095 | ieee80211s_stop(); | |
902acc78 | 1096 | |
47846c9b | 1097 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1098 | |
1099 | rcu_barrier(); | |
f0706e82 JB |
1100 | } |
1101 | ||
1102 | ||
ca9938fe | 1103 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1104 | module_exit(ieee80211_exit); |
1105 | ||
1106 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1107 | MODULE_LICENSE("GPL"); |