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 | 25 | #include <net/cfg80211.h> |
a65240c1 | 26 | #include <net/addrconf.h> |
f0706e82 | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 | 30 | #include "rate.h" |
f7a92144 | 31 | #include "mesh.h" |
f0706e82 | 32 | #include "wep.h" |
2c8dccc7 | 33 | #include "led.h" |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 | 35 | #include "debugfs.h" |
f0706e82 | 36 | |
0d143fe1 | 37 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 38 | { |
3ac64bee | 39 | u64 mc; |
4150c572 JB |
40 | unsigned int changed_flags; |
41 | unsigned int new_flags = 0; | |
42 | ||
53918994 | 43 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
44 | new_flags |= FIF_PROMISC_IN_BSS; |
45 | ||
53918994 | 46 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
47 | new_flags |= FIF_ALLMULTI; |
48 | ||
8a690674 BG |
49 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
50 | test_bit(SCAN_ONCHANNEL_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 | ||
55de908a | 95 | static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
b2c258fb | 96 | { |
1ea6f9c0 | 97 | struct ieee80211_sub_if_data *sdata; |
5e5202a4 | 98 | struct ieee80211_channel *chan; |
55de908a | 99 | u32 changed = 0; |
e8975581 | 100 | int power; |
094d05dc | 101 | enum nl80211_channel_type channel_type; |
ffd2778b | 102 | u32 offchannel_flag; |
1ea6f9c0 | 103 | bool scanning = false; |
f0706e82 | 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 | */ | |
55de908a | 111 | if (chan == local->_oper_channel) |
4f2e9d91 BG |
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; |
42d97a59 | 117 | channel_type = NL80211_CHAN_NO_HT; |
72bdcf34 | 118 | } else { |
55de908a | 119 | chan = local->_oper_channel; |
0aaffa9b | 120 | channel_type = local->_oper_channel_type; |
72bdcf34 | 121 | } |
b23b025f | 122 | |
55de908a | 123 | if (chan != local->_oper_channel || |
b23b025f BG |
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 | ||
1ea6f9c0 JB |
150 | scanning = test_bit(SCAN_SW_SCANNING, &local->scanning) || |
151 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning) || | |
152 | test_bit(SCAN_HW_SCANNING, &local->scanning); | |
153 | power = chan->max_power; | |
a8302de9 | 154 | |
1ea6f9c0 JB |
155 | rcu_read_lock(); |
156 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
157 | if (!rcu_access_pointer(sdata->vif.chanctx_conf)) | |
158 | continue; | |
159 | power = min(power, sdata->vif.bss_conf.txpower); | |
160 | } | |
161 | rcu_read_unlock(); | |
a8302de9 | 162 | |
e8975581 JB |
163 | if (local->hw.conf.power_level != power) { |
164 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
165 | local->hw.conf.power_level = power; | |
166 | } | |
b2c258fb | 167 | |
55de908a JB |
168 | return changed; |
169 | } | |
170 | ||
171 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
172 | { | |
173 | int ret = 0; | |
174 | ||
175 | might_sleep(); | |
176 | ||
177 | if (!local->use_chanctx) | |
178 | changed |= ieee80211_hw_conf_chan(local); | |
179 | else | |
180 | changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | | |
181 | IEEE80211_CONF_CHANGE_POWER); | |
182 | ||
e8975581 | 183 | if (changed && local->open_count) { |
24487981 | 184 | ret = drv_config(local, changed); |
d73782fd | 185 | /* |
447107fb | 186 | * Goal: |
d73782fd JB |
187 | * HW reconfiguration should never fail, the driver has told |
188 | * us what it can support so it should live up to that promise. | |
447107fb RC |
189 | * |
190 | * Current status: | |
191 | * rfkill is not integrated with mac80211 and a | |
192 | * configuration command can thus fail if hardware rfkill | |
193 | * is enabled | |
194 | * | |
195 | * FIXME: integrate rfkill with mac80211 and then add this | |
196 | * WARN_ON() back | |
197 | * | |
d73782fd | 198 | */ |
447107fb | 199 | /* WARN_ON(ret); */ |
d73782fd | 200 | } |
f0706e82 | 201 | |
b2c258fb JB |
202 | return ret; |
203 | } | |
f0706e82 | 204 | |
471b3efd JB |
205 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
206 | u32 changed) | |
d9430a32 | 207 | { |
471b3efd JB |
208 | struct ieee80211_local *local = sdata->local; |
209 | ||
210 | if (!changed) | |
211 | return; | |
212 | ||
12375ef9 | 213 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
214 | } |
215 | ||
f698d856 | 216 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 217 | { |
bda3933a JB |
218 | sdata->vif.bss_conf.use_cts_prot = false; |
219 | sdata->vif.bss_conf.use_short_preamble = false; | |
220 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
221 | return BSS_CHANGED_ERP_CTS_PROT | |
222 | BSS_CHANGED_ERP_PREAMBLE | | |
223 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
224 | } |
225 | ||
f0706e82 JB |
226 | static void ieee80211_tasklet_handler(unsigned long data) |
227 | { | |
228 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
37fbd908 JB |
229 | struct sta_info *sta, *tmp; |
230 | struct skb_eosp_msg_data *eosp_data; | |
f0706e82 | 231 | struct sk_buff *skb; |
f0706e82 JB |
232 | |
233 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
234 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
235 | switch (skb->pkt_type) { | |
236 | case IEEE80211_RX_MSG: | |
51fb61e7 | 237 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
238 | * netstack. */ |
239 | skb->pkt_type = 0; | |
005e472b | 240 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
241 | break; |
242 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 243 | skb->pkt_type = 0; |
005e472b | 244 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 245 | break; |
37fbd908 JB |
246 | case IEEE80211_EOSP_MSG: |
247 | eosp_data = (void *)skb->cb; | |
248 | for_each_sta_info(local, eosp_data->sta, sta, tmp) { | |
249 | /* skip wrong virtual interface */ | |
250 | if (memcmp(eosp_data->iface, | |
251 | sta->sdata->vif.addr, ETH_ALEN)) | |
252 | continue; | |
253 | clear_sta_flag(sta, WLAN_STA_SP); | |
254 | break; | |
255 | } | |
256 | dev_kfree_skb(skb); | |
257 | break; | |
f4ea83dd | 258 | default: |
5e3f3089 LF |
259 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
260 | skb->pkt_type); | |
f0706e82 JB |
261 | dev_kfree_skb(skb); |
262 | break; | |
263 | } | |
264 | } | |
265 | } | |
266 | ||
f2753ddb JB |
267 | static void ieee80211_restart_work(struct work_struct *work) |
268 | { | |
269 | struct ieee80211_local *local = | |
270 | container_of(work, struct ieee80211_local, restart_work); | |
271 | ||
bc86863d SG |
272 | /* wait for scan work complete */ |
273 | flush_workqueue(local->workqueue); | |
274 | ||
275 | mutex_lock(&local->mtx); | |
79f460ca | 276 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) || |
5260a5b2 JB |
277 | rcu_dereference_protected(local->sched_scan_sdata, |
278 | lockdep_is_held(&local->mtx)), | |
bc86863d SG |
279 | "%s called with hardware scan in progress\n", __func__); |
280 | mutex_unlock(&local->mtx); | |
281 | ||
f2753ddb | 282 | rtnl_lock(); |
4136c422 | 283 | ieee80211_scan_cancel(local); |
f2753ddb JB |
284 | ieee80211_reconfig(local); |
285 | rtnl_unlock(); | |
286 | } | |
287 | ||
288 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
289 | { | |
290 | struct ieee80211_local *local = hw_to_local(hw); | |
291 | ||
b5878a2d JB |
292 | trace_api_restart_hw(local); |
293 | ||
b196d031 MB |
294 | wiphy_info(hw->wiphy, |
295 | "Hardware restart was requested\n"); | |
296 | ||
18145c69 | 297 | /* use this reason, ieee80211_reconfig will unblock it */ |
f2753ddb JB |
298 | ieee80211_stop_queues_by_reason(hw, |
299 | IEEE80211_QUEUE_STOP_REASON_SUSPEND); | |
300 | ||
04800ada AN |
301 | /* |
302 | * Stop all Rx during the reconfig. We don't want state changes | |
303 | * or driver callbacks while this is in progress. | |
304 | */ | |
305 | local->in_reconfig = true; | |
306 | barrier(); | |
307 | ||
f2753ddb JB |
308 | schedule_work(&local->restart_work); |
309 | } | |
310 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
311 | ||
26b36cfe | 312 | #ifdef CONFIG_INET |
2b2c009e JO |
313 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
314 | unsigned long data, void *arg) | |
315 | { | |
316 | struct in_ifaddr *ifa = arg; | |
317 | struct ieee80211_local *local = | |
318 | container_of(nb, struct ieee80211_local, | |
319 | ifa_notifier); | |
320 | struct net_device *ndev = ifa->ifa_dev->dev; | |
321 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 322 | struct in_device *idev; |
2b2c009e | 323 | struct ieee80211_sub_if_data *sdata; |
68542962 | 324 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 325 | struct ieee80211_if_managed *ifmgd; |
68542962 | 326 | int c = 0; |
2b2c009e JO |
327 | |
328 | /* Make sure it's our interface that got changed */ | |
329 | if (!wdev) | |
330 | return NOTIFY_DONE; | |
331 | ||
332 | if (wdev->wiphy != local->hw.wiphy) | |
333 | return NOTIFY_DONE; | |
334 | ||
2b2c009e | 335 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 336 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
337 | |
338 | /* ARP filtering is only supported in managed mode */ | |
339 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
340 | return NOTIFY_DONE; | |
341 | ||
95ae6b22 | 342 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
343 | if (!idev) |
344 | return NOTIFY_DONE; | |
345 | ||
2b2c009e JO |
346 | ifmgd = &sdata->u.mgd; |
347 | mutex_lock(&ifmgd->mtx); | |
68542962 JO |
348 | |
349 | /* Copy the addresses to the bss_conf list */ | |
350 | ifa = idev->ifa_list; | |
0f19b41e JB |
351 | while (ifa) { |
352 | if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) | |
353 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
68542962 JO |
354 | ifa = ifa->ifa_next; |
355 | c++; | |
356 | } | |
357 | ||
68542962 JO |
358 | bss_conf->arp_addr_cnt = c; |
359 | ||
53d69c39 | 360 | /* Configure driver only if associated (which also implies it is up) */ |
0f19b41e | 361 | if (ifmgd->associated) |
68542962 JO |
362 | ieee80211_bss_info_change_notify(sdata, |
363 | BSS_CHANGED_ARP_FILTER); | |
68542962 | 364 | |
2b2c009e JO |
365 | mutex_unlock(&ifmgd->mtx); |
366 | ||
367 | return NOTIFY_DONE; | |
368 | } | |
26b36cfe | 369 | #endif |
2b2c009e | 370 | |
a65240c1 JB |
371 | #if IS_ENABLED(CONFIG_IPV6) |
372 | static int ieee80211_ifa6_changed(struct notifier_block *nb, | |
373 | unsigned long data, void *arg) | |
374 | { | |
375 | struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; | |
376 | struct inet6_dev *idev = ifa->idev; | |
377 | struct net_device *ndev = ifa->idev->dev; | |
378 | struct ieee80211_local *local = | |
379 | container_of(nb, struct ieee80211_local, ifa6_notifier); | |
380 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
381 | struct ieee80211_sub_if_data *sdata; | |
382 | ||
383 | /* Make sure it's our interface that got changed */ | |
384 | if (!wdev || wdev->wiphy != local->hw.wiphy) | |
385 | return NOTIFY_DONE; | |
386 | ||
387 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
388 | ||
389 | /* | |
390 | * For now only support station mode. This is mostly because | |
391 | * doing AP would have to handle AP_VLAN in some way ... | |
392 | */ | |
393 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
394 | return NOTIFY_DONE; | |
395 | ||
396 | drv_ipv6_addr_change(local, sdata, idev); | |
397 | ||
398 | return NOTIFY_DONE; | |
399 | } | |
400 | #endif | |
401 | ||
4e6cbfd0 JL |
402 | static int ieee80211_napi_poll(struct napi_struct *napi, int budget) |
403 | { | |
404 | struct ieee80211_local *local = | |
405 | container_of(napi, struct ieee80211_local, napi); | |
406 | ||
407 | return local->ops->napi_poll(&local->hw, budget); | |
408 | } | |
409 | ||
410 | void ieee80211_napi_schedule(struct ieee80211_hw *hw) | |
411 | { | |
412 | struct ieee80211_local *local = hw_to_local(hw); | |
413 | ||
414 | napi_schedule(&local->napi); | |
415 | } | |
416 | EXPORT_SYMBOL(ieee80211_napi_schedule); | |
417 | ||
418 | void ieee80211_napi_complete(struct ieee80211_hw *hw) | |
419 | { | |
420 | struct ieee80211_local *local = hw_to_local(hw); | |
421 | ||
422 | napi_complete(&local->napi); | |
423 | } | |
424 | EXPORT_SYMBOL(ieee80211_napi_complete); | |
425 | ||
2e161f78 JB |
426 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
427 | static const struct ieee80211_txrx_stypes | |
428 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
429 | [NL80211_IFTYPE_ADHOC] = { | |
430 | .tx = 0xffff, | |
3bfda62c WH |
431 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
432 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
41e31b8b AQ |
433 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
434 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
2e161f78 JB |
435 | }, |
436 | [NL80211_IFTYPE_STATION] = { | |
437 | .tx = 0xffff, | |
438 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
439 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
440 | }, | |
441 | [NL80211_IFTYPE_AP] = { | |
442 | .tx = 0xffff, | |
443 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
444 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
445 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
446 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
447 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
448 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
449 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
450 | }, | |
451 | [NL80211_IFTYPE_AP_VLAN] = { | |
452 | /* copy AP */ | |
453 | .tx = 0xffff, | |
454 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
455 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
456 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
457 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
458 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
459 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
460 | BIT(IEEE80211_STYPE_ACTION >> 4), |
461 | }, | |
462 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
463 | .tx = 0xffff, | |
464 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
465 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
466 | }, | |
467 | [NL80211_IFTYPE_P2P_GO] = { | |
468 | .tx = 0xffff, | |
469 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
470 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
471 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
472 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
473 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
474 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
475 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
476 | }, | |
c7108a71 JC |
477 | [NL80211_IFTYPE_MESH_POINT] = { |
478 | .tx = 0xffff, | |
71839121 JC |
479 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
480 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
481 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 482 | }, |
f142c6b9 JB |
483 | [NL80211_IFTYPE_P2P_DEVICE] = { |
484 | .tx = 0xffff, | |
485 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
486 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
487 | }, | |
2e161f78 JB |
488 | }; |
489 | ||
ef96a842 BG |
490 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
491 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
492 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
493 | ||
494 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
495 | IEEE80211_HT_CAP_MAX_AMSDU | | |
bc0784d9 | 496 | IEEE80211_HT_CAP_SGI_20 | |
ef96a842 BG |
497 | IEEE80211_HT_CAP_SGI_40), |
498 | .mcs = { | |
499 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
500 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
501 | }, | |
502 | }; | |
503 | ||
dd5ecfea JB |
504 | static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
505 | .vht_cap_info = | |
506 | cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | | |
507 | IEEE80211_VHT_CAP_SHORT_GI_80 | | |
508 | IEEE80211_VHT_CAP_SHORT_GI_160 | | |
509 | IEEE80211_VHT_CAP_RXSTBC_1 | | |
510 | IEEE80211_VHT_CAP_RXSTBC_2 | | |
511 | IEEE80211_VHT_CAP_RXSTBC_3 | | |
512 | IEEE80211_VHT_CAP_RXSTBC_4 | | |
513 | IEEE80211_VHT_CAP_TXSTBC | | |
514 | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
515 | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | | |
516 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | | |
517 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | | |
518 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), | |
519 | .supp_mcs = { | |
520 | .rx_mcs_map = cpu_to_le16(~0), | |
521 | .tx_mcs_map = cpu_to_le16(~0), | |
522 | }, | |
523 | }; | |
524 | ||
c6f9d6c3 JB |
525 | static const u8 extended_capabilities[] = { |
526 | 0, 0, 0, 0, 0, 0, 0, | |
527 | WLAN_EXT_CAPA8_OPMODE_NOTIF, | |
528 | }; | |
529 | ||
f0706e82 JB |
530 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
531 | const struct ieee80211_ops *ops) | |
532 | { | |
f0706e82 | 533 | struct ieee80211_local *local; |
96f5e66e | 534 | int priv_size, i; |
f0706e82 | 535 | struct wiphy *wiphy; |
fe57d9f5 | 536 | bool use_chanctx; |
f0706e82 | 537 | |
c0af0734 JB |
538 | if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
539 | !ops->add_interface || !ops->remove_interface || | |
540 | !ops->configure_filter)) | |
541 | return NULL; | |
542 | ||
f09603a2 JB |
543 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
544 | return NULL; | |
545 | ||
e269d860 JB |
546 | /* check all or no channel context operations exist */ |
547 | i = !!ops->add_chanctx + !!ops->remove_chanctx + | |
548 | !!ops->change_chanctx + !!ops->assign_vif_chanctx + | |
549 | !!ops->unassign_vif_chanctx; | |
550 | if (WARN_ON(i != 0 && i != 5)) | |
551 | return NULL; | |
fe57d9f5 | 552 | use_chanctx = i == 5; |
e269d860 | 553 | |
f0706e82 JB |
554 | /* Ensure 32-byte alignment of our private data and hw private data. |
555 | * We use the wiphy priv data for both our ieee80211_local and for | |
556 | * the driver's private data | |
557 | * | |
558 | * In memory it'll be like this: | |
559 | * | |
560 | * +-------------------------+ | |
561 | * | struct wiphy | | |
562 | * +-------------------------+ | |
563 | * | struct ieee80211_local | | |
564 | * +-------------------------+ | |
565 | * | driver's private data | | |
566 | * +-------------------------+ | |
567 | * | |
568 | */ | |
1ce8e7b5 | 569 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
570 | |
571 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
572 | ||
573 | if (!wiphy) | |
574 | return NULL; | |
575 | ||
2e161f78 JB |
576 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
577 | ||
207aba60 JB |
578 | wiphy->privid = mac80211_wiphy_privid; |
579 | ||
9bc383de JB |
580 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
581 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 582 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 583 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
584 | WIPHY_FLAG_OFFCHAN_TX; |
585 | ||
c6f9d6c3 JB |
586 | wiphy->extended_capabilities = extended_capabilities; |
587 | wiphy->extended_capabilities_mask = extended_capabilities; | |
588 | wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities); | |
589 | ||
81ddbb5c JB |
590 | if (ops->remain_on_channel) |
591 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 592 | |
b292219f JB |
593 | wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
594 | NL80211_FEATURE_SAE | | |
1ea6f9c0 | 595 | NL80211_FEATURE_HT_IBSS | |
932dd97c | 596 | NL80211_FEATURE_VIF_TXPOWER; |
a729cff8 | 597 | |
cd2bb512 | 598 | if (!ops->hw_scan) |
5c95b940 AQ |
599 | wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
600 | NL80211_FEATURE_AP_SCAN; | |
601 | ||
cd2bb512 | 602 | |
207aba60 JB |
603 | if (!ops->set_key) |
604 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 605 | |
0c1ad2ca | 606 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
607 | |
608 | local = wiphy_priv(wiphy); | |
de95a54b | 609 | |
f0706e82 JB |
610 | local->hw.wiphy = wiphy; |
611 | ||
1ce8e7b5 | 612 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 JB |
613 | |
614 | local->ops = ops; | |
fe57d9f5 | 615 | local->use_chanctx = use_chanctx; |
f0706e82 | 616 | |
e6a9854b JB |
617 | /* set up some defaults */ |
618 | local->hw.queues = 1; | |
619 | local->hw.max_rates = 1; | |
78be49ec | 620 | local->hw.max_report_rates = 0; |
df6ba5d8 | 621 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 622 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 623 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
624 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
625 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
626 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
627 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
628 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
51648921 JB |
629 | local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
630 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; | |
1ea6f9c0 | 631 | local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
ef96a842 | 632 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
dd5ecfea | 633 | wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
f0706e82 | 634 | |
79010420 | 635 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
636 | |
637 | __hw_addr_init(&local->mc_list); | |
638 | ||
c771c9d8 | 639 | mutex_init(&local->iflist_mtx); |
a1699b75 | 640 | mutex_init(&local->mtx); |
f0706e82 | 641 | |
ad0e2b5a | 642 | mutex_init(&local->key_mtx); |
3b8d81e0 | 643 | spin_lock_init(&local->filter_lock); |
f9e124fb | 644 | spin_lock_init(&local->rx_path_lock); |
ce7c9111 KV |
645 | spin_lock_init(&local->queue_stop_reason_lock); |
646 | ||
d01a1e65 MK |
647 | INIT_LIST_HEAD(&local->chanctx_list); |
648 | mutex_init(&local->chanctx_mtx); | |
649 | ||
c2b13452 | 650 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 651 | |
f2753ddb JB |
652 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
653 | ||
164eb02d SW |
654 | INIT_WORK(&local->radar_detected_work, |
655 | ieee80211_dfs_radar_detected_work); | |
656 | ||
3ac64bee | 657 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b | 658 | local->smps_mode = IEEE80211_SMPS_OFF; |
3ac64bee | 659 | |
520eb820 KV |
660 | INIT_WORK(&local->dynamic_ps_enable_work, |
661 | ieee80211_dynamic_ps_enable_work); | |
662 | INIT_WORK(&local->dynamic_ps_disable_work, | |
663 | ieee80211_dynamic_ps_disable_work); | |
664 | setup_timer(&local->dynamic_ps_timer, | |
665 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
666 | ||
85a9994a LC |
667 | INIT_WORK(&local->sched_scan_stopped_work, |
668 | ieee80211_sched_scan_stopped_work); | |
669 | ||
a729cff8 JB |
670 | spin_lock_init(&local->ack_status_lock); |
671 | idr_init(&local->ack_status_frames); | |
a729cff8 | 672 | |
f0706e82 JB |
673 | sta_info_init(local); |
674 | ||
a6a67db2 | 675 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 676 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
677 | atomic_set(&local->agg_queue_stop[i], 0); |
678 | } | |
f0706e82 JB |
679 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
680 | (unsigned long)local); | |
f0706e82 JB |
681 | |
682 | tasklet_init(&local->tasklet, | |
683 | ieee80211_tasklet_handler, | |
684 | (unsigned long) local); | |
f0706e82 JB |
685 | |
686 | skb_queue_head_init(&local->skb_queue); | |
687 | skb_queue_head_init(&local->skb_queue_unreliable); | |
688 | ||
4e6cbfd0 JL |
689 | /* init dummy netdev for use w/ NAPI */ |
690 | init_dummy_netdev(&local->napi_dev); | |
691 | ||
fe67c913 JB |
692 | ieee80211_led_names(local); |
693 | ||
2eb278e0 | 694 | ieee80211_roc_setup(local); |
21f83589 | 695 | |
005e472b | 696 | return &local->hw; |
f0706e82 JB |
697 | } |
698 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
699 | ||
700 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
701 | { | |
702 | struct ieee80211_local *local = hw_to_local(hw); | |
7527a782 | 703 | int result, i; |
8318d78a | 704 | enum ieee80211_band band; |
be4a4b6a | 705 | int channels, max_bitrates; |
ba0afa2f | 706 | bool supp_ht, supp_vht; |
72d78728 | 707 | netdev_features_t feature_whitelist; |
25e47c18 | 708 | static const u32 cipher_suites[] = { |
5daa8a8e | 709 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
710 | WLAN_CIPHER_SUITE_WEP40, |
711 | WLAN_CIPHER_SUITE_WEP104, | |
712 | WLAN_CIPHER_SUITE_TKIP, | |
713 | WLAN_CIPHER_SUITE_CCMP, | |
714 | ||
715 | /* keep last -- depends on hw flags! */ | |
716 | WLAN_CIPHER_SUITE_AES_CMAC | |
717 | }; | |
8318d78a | 718 | |
3a25a8c8 JB |
719 | if (hw->flags & IEEE80211_HW_QUEUE_CONTROL && |
720 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || | |
721 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
722 | return -EINVAL; | |
723 | ||
38bb3e9d | 724 | #ifdef CONFIG_PM |
dfb89c56 JB |
725 | if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) && |
726 | (!local->ops->suspend || !local->ops->resume)) | |
eecc4800 | 727 | return -EINVAL; |
dfb89c56 | 728 | #endif |
eecc4800 | 729 | |
fe57d9f5 JB |
730 | if (!local->use_chanctx) { |
731 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
732 | const struct ieee80211_iface_combination *comb; | |
733 | ||
734 | comb = &local->hw.wiphy->iface_combinations[i]; | |
735 | ||
736 | if (comb->num_different_channels > 1) | |
737 | return -EINVAL; | |
738 | } | |
746a3365 | 739 | } else { |
fe57d9f5 JB |
740 | /* |
741 | * WDS is currently prohibited when channel contexts are used | |
742 | * because there's no clear definition of which channel WDS | |
743 | * type interfaces use | |
744 | */ | |
745 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)) | |
746 | return -EINVAL; | |
164eb02d SW |
747 | |
748 | /* DFS currently not supported with channel context drivers */ | |
749 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
750 | const struct ieee80211_iface_combination *comb; | |
751 | ||
752 | comb = &local->hw.wiphy->iface_combinations[i]; | |
753 | ||
754 | if (comb->radar_detect_widths) | |
755 | return -EINVAL; | |
756 | } | |
fe57d9f5 JB |
757 | } |
758 | ||
72d78728 AN |
759 | /* Only HW csum features are currently compatible with mac80211 */ |
760 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
761 | NETIF_F_HW_CSUM; | |
762 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) | |
763 | return -EINVAL; | |
764 | ||
78be49ec HS |
765 | if (hw->max_report_rates == 0) |
766 | hw->max_report_rates = hw->max_rates; | |
767 | ||
04ecd257 JB |
768 | local->rx_chains = 1; |
769 | ||
8318d78a JB |
770 | /* |
771 | * generic code guarantees at least one band, | |
772 | * set this very early because much code assumes | |
773 | * that hw.conf.channel is assigned | |
774 | */ | |
2a519311 | 775 | channels = 0; |
de95a54b | 776 | max_bitrates = 0; |
5ef2d41a | 777 | supp_ht = false; |
ba0afa2f | 778 | supp_vht = false; |
8318d78a JB |
779 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
780 | struct ieee80211_supported_band *sband; | |
781 | ||
782 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
783 | if (!sband) |
784 | continue; | |
55de908a | 785 | if (!local->use_chanctx && !local->_oper_channel) { |
8318d78a JB |
786 | /* init channel we're on */ |
787 | local->hw.conf.channel = | |
55de908a | 788 | local->_oper_channel = &sband->channels[0]; |
58905ca5 | 789 | local->hw.conf.channel_type = NL80211_CHAN_NO_HT; |
8318d78a | 790 | } |
4bf88530 JB |
791 | cfg80211_chandef_create(&local->monitor_chandef, |
792 | &sband->channels[0], | |
793 | NL80211_CHAN_NO_HT); | |
de95a54b JB |
794 | channels += sband->n_channels; |
795 | ||
796 | if (max_bitrates < sband->n_bitrates) | |
797 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 798 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 799 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
04ecd257 JB |
800 | |
801 | if (sband->ht_cap.ht_supported) | |
802 | local->rx_chains = | |
803 | max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), | |
804 | local->rx_chains); | |
805 | ||
806 | /* TODO: consider VHT for RX chains, hopefully it's the same */ | |
8318d78a | 807 | } |
f0706e82 | 808 | |
5ba63533 JB |
809 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
810 | sizeof(void *) * channels, GFP_KERNEL); | |
811 | if (!local->int_scan_req) | |
2a519311 JB |
812 | return -ENOMEM; |
813 | ||
c72e8d33 SW |
814 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
815 | if (!local->hw.wiphy->bands[band]) | |
816 | continue; | |
817 | local->int_scan_req->rates[band] = (u32) -1; | |
818 | } | |
819 | ||
f59ac048 | 820 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
821 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
822 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
823 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
824 | } | |
f59ac048 LR |
825 | |
826 | /* mac80211 always supports monitor */ | |
7527a782 JB |
827 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
828 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
829 | ||
55de908a | 830 | /* mac80211 doesn't support more than one IBSS interface right now */ |
8e621fc9 JB |
831 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
832 | const struct ieee80211_iface_combination *c; | |
833 | int j; | |
834 | ||
835 | c = &hw->wiphy->iface_combinations[i]; | |
836 | ||
8e621fc9 JB |
837 | for (j = 0; j < c->n_limits; j++) |
838 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
839 | c->limits[j].max > 1) | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
5eb5a52d JB |
843 | #ifndef CONFIG_MAC80211_MESH |
844 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
845 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
846 | #endif | |
847 | ||
1570ca59 JC |
848 | /* if the underlying driver supports mesh, mac80211 will (at least) |
849 | * provide routing of mesh authentication frames to userspace */ | |
850 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
851 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
852 | ||
a621fa4d JB |
853 | /* mac80211 supports control port protocol changing */ |
854 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
855 | ||
77965c97 JB |
856 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) |
857 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; | |
858 | else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) | |
859 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; | |
860 | ||
ab13315a KV |
861 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
862 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
863 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
864 | ||
de95a54b JB |
865 | /* |
866 | * Calculate scan IE length -- we need this to alloc | |
867 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 868 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
869 | * information -- SSID is the driver's responsibility. |
870 | */ | |
dc9f48ce JM |
871 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
872 | 3 /* DS Params */; | |
5ef2d41a JB |
873 | if (supp_ht) |
874 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 875 | |
4bf88530 | 876 | if (supp_vht) { |
ba0afa2f | 877 | local->scan_ies_len += |
d4950281 | 878 | 2 + sizeof(struct ieee80211_vht_cap); |
ba0afa2f | 879 | |
4bf88530 JB |
880 | /* |
881 | * (for now at least), drivers wanting to use VHT must | |
882 | * support channel contexts, as they contain all the | |
883 | * necessary VHT information and the global hw config | |
884 | * doesn't (yet) | |
885 | */ | |
886 | if (WARN_ON(!local->use_chanctx)) { | |
887 | result = -EINVAL; | |
888 | goto fail_wiphy_register; | |
889 | } | |
890 | } | |
891 | ||
de95a54b JB |
892 | if (!local->ops->hw_scan) { |
893 | /* For hw_scan, driver needs to set these up. */ | |
894 | local->hw.wiphy->max_scan_ssids = 4; | |
895 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
896 | } | |
897 | ||
898 | /* | |
899 | * If the driver supports any scan IEs, then assume the | |
900 | * limit includes the IEs mac80211 will add, otherwise | |
901 | * leave it at zero and let the driver sort it out; we | |
902 | * still pass our IEs to the driver but userspace will | |
903 | * not be allowed to in that case. | |
904 | */ | |
905 | if (local->hw.wiphy->max_scan_ie_len) | |
906 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
907 | ||
3ffc2a90 JB |
908 | /* Set up cipher suites unless driver already did */ |
909 | if (!local->hw.wiphy->cipher_suites) { | |
910 | local->hw.wiphy->cipher_suites = cipher_suites; | |
911 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
912 | if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE)) | |
913 | local->hw.wiphy->n_cipher_suites--; | |
914 | } | |
5daa8a8e | 915 | if (IS_ERR(local->wep_tx_tfm) || IS_ERR(local->wep_rx_tfm)) { |
3ffc2a90 JB |
916 | if (local->hw.wiphy->cipher_suites == cipher_suites) { |
917 | local->hw.wiphy->cipher_suites += 2; | |
918 | local->hw.wiphy->n_cipher_suites -= 2; | |
919 | } else { | |
920 | u32 *suites; | |
921 | int r, w = 0; | |
922 | ||
923 | /* Filter out WEP */ | |
924 | ||
925 | suites = kmemdup( | |
926 | local->hw.wiphy->cipher_suites, | |
927 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
928 | GFP_KERNEL); | |
cfff2f99 JB |
929 | if (!suites) { |
930 | result = -ENOMEM; | |
931 | goto fail_wiphy_register; | |
932 | } | |
3ffc2a90 JB |
933 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { |
934 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
935 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
936 | suite == WLAN_CIPHER_SUITE_WEP104) | |
937 | continue; | |
938 | suites[w++] = suite; | |
939 | } | |
940 | local->hw.wiphy->cipher_suites = suites; | |
941 | local->hw.wiphy->n_cipher_suites = w; | |
942 | local->wiphy_ciphers_allocated = true; | |
943 | } | |
5daa8a8e | 944 | } |
25e47c18 | 945 | |
21f83589 JB |
946 | if (!local->ops->remain_on_channel) |
947 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 948 | |
79f460ca LC |
949 | if (local->ops->sched_scan_start) |
950 | local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; | |
951 | ||
dfe018bf AN |
952 | /* mac80211 based drivers don't support internal TDLS setup */ |
953 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
954 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
955 | ||
f0706e82 JB |
956 | result = wiphy_register(local->hw.wiphy); |
957 | if (result < 0) | |
2a519311 | 958 | goto fail_wiphy_register; |
f0706e82 | 959 | |
e2530083 JB |
960 | /* |
961 | * We use the number of queues for feature tests (QoS, HT) internally | |
962 | * so restrict them appropriately. | |
963 | */ | |
e2530083 JB |
964 | if (hw->queues > IEEE80211_MAX_QUEUES) |
965 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 966 | |
42935eca | 967 | local->workqueue = |
99b88a0e | 968 | alloc_ordered_workqueue(wiphy_name(local->hw.wiphy), 0); |
42935eca | 969 | if (!local->workqueue) { |
f0706e82 JB |
970 | result = -ENOMEM; |
971 | goto fail_workqueue; | |
972 | } | |
973 | ||
b306f453 JB |
974 | /* |
975 | * The hardware needs headroom for sending the frame, | |
976 | * and we need some headroom for passing the frame to monitor | |
977 | * interfaces, but never both at the same time. | |
978 | */ | |
33ccad35 | 979 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 980 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 981 | |
e9f207f0 JB |
982 | debugfs_hw_add(local); |
983 | ||
b446918b HS |
984 | /* |
985 | * if the driver doesn't specify a max listen interval we | |
986 | * use 5 which should be a safe default | |
987 | */ | |
ea95bba4 | 988 | if (local->hw.max_listen_interval == 0) |
b446918b | 989 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
990 | |
991 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
992 | ||
ff616381 | 993 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 994 | |
d4c4a9a1 | 995 | result = ieee80211_wep_init(local); |
3473187d | 996 | if (result < 0) |
0fb9a9ec JP |
997 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
998 | result); | |
d4c4a9a1 | 999 | |
b57e6b56 MSS |
1000 | ieee80211_led_init(local); |
1001 | ||
f0706e82 | 1002 | rtnl_lock(); |
f0706e82 | 1003 | |
830f9038 JB |
1004 | result = ieee80211_init_rate_ctrl_alg(local, |
1005 | hw->rate_control_algorithm); | |
f0706e82 | 1006 | if (result < 0) { |
0fb9a9ec JP |
1007 | wiphy_debug(local->hw.wiphy, |
1008 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
1009 | goto fail_rate; |
1010 | } | |
1011 | ||
8dffff21 JB |
1012 | /* add one default STA interface if supported */ |
1013 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
1014 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
1015 | NL80211_IFTYPE_STATION, NULL); | |
1016 | if (result) | |
0fb9a9ec JP |
1017 | wiphy_warn(local->hw.wiphy, |
1018 | "Failed to add default virtual iface\n"); | |
8dffff21 | 1019 | } |
f0706e82 | 1020 | |
f0706e82 JB |
1021 | rtnl_unlock(); |
1022 | ||
10f644a4 JB |
1023 | local->network_latency_notifier.notifier_call = |
1024 | ieee80211_max_network_latency; | |
1025 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
1026 | &local->network_latency_notifier); | |
10f644a4 JB |
1027 | if (result) { |
1028 | rtnl_lock(); | |
1029 | goto fail_pm_qos; | |
1030 | } | |
1031 | ||
26b36cfe | 1032 | #ifdef CONFIG_INET |
2b2c009e JO |
1033 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
1034 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
1035 | if (result) | |
1036 | goto fail_ifa; | |
26b36cfe | 1037 | #endif |
2b2c009e | 1038 | |
a65240c1 JB |
1039 | #if IS_ENABLED(CONFIG_IPV6) |
1040 | local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; | |
1041 | result = register_inet6addr_notifier(&local->ifa6_notifier); | |
1042 | if (result) | |
1043 | goto fail_ifa6; | |
1044 | #endif | |
1045 | ||
4e6cbfd0 JL |
1046 | netif_napi_add(&local->napi_dev, &local->napi, ieee80211_napi_poll, |
1047 | local->hw.napi_weight); | |
1048 | ||
f0706e82 JB |
1049 | return 0; |
1050 | ||
a65240c1 JB |
1051 | #if IS_ENABLED(CONFIG_IPV6) |
1052 | fail_ifa6: | |
93c08c32 | 1053 | #ifdef CONFIG_INET |
a65240c1 JB |
1054 | unregister_inetaddr_notifier(&local->ifa_notifier); |
1055 | #endif | |
1056 | #endif | |
1057 | #if defined(CONFIG_INET) || defined(CONFIG_IPV6) | |
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 |
a65240c1 JB |
1093 | #if IS_ENABLED(CONFIG_IPV6) |
1094 | unregister_inet6addr_notifier(&local->ifa6_notifier); | |
1095 | #endif | |
10f644a4 | 1096 | |
f0706e82 JB |
1097 | rtnl_lock(); |
1098 | ||
79010420 JB |
1099 | /* |
1100 | * At this point, interface list manipulations are fine | |
1101 | * because the driver cannot be handing us frames any | |
1102 | * more and the tasklet is killed. | |
1103 | */ | |
75636525 | 1104 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1105 | |
f0706e82 JB |
1106 | rtnl_unlock(); |
1107 | ||
258086a4 | 1108 | cancel_work_sync(&local->restart_work); |
3ac64bee JB |
1109 | cancel_work_sync(&local->reconfig_filter); |
1110 | ||
f0706e82 | 1111 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1112 | rate_control_deinitialize(local); |
1113 | ||
f64f9e71 JP |
1114 | if (skb_queue_len(&local->skb_queue) || |
1115 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1116 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1117 | skb_queue_purge(&local->skb_queue); |
1118 | skb_queue_purge(&local->skb_queue_unreliable); | |
1119 | ||
42935eca | 1120 | destroy_workqueue(local->workqueue); |
f0706e82 | 1121 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1122 | sta_info_stop(local); |
f0706e82 JB |
1123 | ieee80211_wep_free(local); |
1124 | ieee80211_led_exit(local); | |
5ba63533 | 1125 | kfree(local->int_scan_req); |
f0706e82 JB |
1126 | } |
1127 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1128 | ||
a729cff8 JB |
1129 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1130 | { | |
1131 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1132 | kfree_skb(p); | |
1133 | return 0; | |
1134 | } | |
1135 | ||
f0706e82 JB |
1136 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1137 | { | |
1138 | struct ieee80211_local *local = hw_to_local(hw); | |
1139 | ||
c771c9d8 | 1140 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1141 | mutex_destroy(&local->mtx); |
c771c9d8 | 1142 | |
3ffc2a90 JB |
1143 | if (local->wiphy_ciphers_allocated) |
1144 | kfree(local->hw.wiphy->cipher_suites); | |
1145 | ||
a729cff8 JB |
1146 | idr_for_each(&local->ack_status_frames, |
1147 | ieee80211_free_ack_frame, NULL); | |
1148 | idr_destroy(&local->ack_status_frames); | |
1149 | ||
f0706e82 JB |
1150 | wiphy_free(local->hw.wiphy); |
1151 | } | |
1152 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1153 | ||
f0706e82 JB |
1154 | static int __init ieee80211_init(void) |
1155 | { | |
1156 | struct sk_buff *skb; | |
1157 | int ret; | |
1158 | ||
e039fa4a JB |
1159 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1160 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1161 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1162 | |
cccf129f FF |
1163 | ret = rc80211_minstrel_init(); |
1164 | if (ret) | |
1165 | return ret; | |
1166 | ||
ec8aa669 FF |
1167 | ret = rc80211_minstrel_ht_init(); |
1168 | if (ret) | |
1169 | goto err_minstrel; | |
1170 | ||
4b475898 | 1171 | ret = rc80211_pid_init(); |
ad018375 | 1172 | if (ret) |
47846c9b | 1173 | goto err_pid; |
f0706e82 | 1174 | |
47846c9b JB |
1175 | ret = ieee80211_iface_init(); |
1176 | if (ret) | |
1177 | goto err_netdev; | |
e9f207f0 | 1178 | |
f0706e82 | 1179 | return 0; |
47846c9b JB |
1180 | err_netdev: |
1181 | rc80211_pid_exit(); | |
1182 | err_pid: | |
ec8aa669 FF |
1183 | rc80211_minstrel_ht_exit(); |
1184 | err_minstrel: | |
47846c9b JB |
1185 | rc80211_minstrel_exit(); |
1186 | ||
1187 | return ret; | |
f0706e82 JB |
1188 | } |
1189 | ||
f0706e82 JB |
1190 | static void __exit ieee80211_exit(void) |
1191 | { | |
4b475898 | 1192 | rc80211_pid_exit(); |
ec8aa669 | 1193 | rc80211_minstrel_ht_exit(); |
cccf129f | 1194 | rc80211_minstrel_exit(); |
ac71c691 | 1195 | |
bf7cd94d | 1196 | ieee80211s_stop(); |
902acc78 | 1197 | |
47846c9b | 1198 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1199 | |
1200 | rcu_barrier(); | |
f0706e82 JB |
1201 | } |
1202 | ||
1203 | ||
ca9938fe | 1204 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1205 | module_exit(ieee80211_exit); |
1206 | ||
1207 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1208 | MODULE_LICENSE("GPL"); |