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> | |
d98ad83e | 5 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
f0706e82 JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <net/mac80211.h> | |
f0706e82 JB |
13 | #include <linux/module.h> |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
f0706e82 | 21 | #include <linux/rtnetlink.h> |
f0706e82 | 22 | #include <linux/bitmap.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" |
e9f207f0 | 34 | #include "debugfs.h" |
f0706e82 | 35 | |
0d143fe1 | 36 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 37 | { |
3ac64bee | 38 | u64 mc; |
4150c572 JB |
39 | unsigned int changed_flags; |
40 | unsigned int new_flags = 0; | |
41 | ||
53918994 | 42 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
43 | new_flags |= FIF_ALLMULTI; |
44 | ||
8a690674 BG |
45 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
46 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) | |
8cc9a739 MW |
47 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
48 | ||
7be5086d JB |
49 | if (local->fif_probe_req || local->probe_req_reg) |
50 | new_flags |= FIF_PROBE_REQ; | |
51 | ||
8cc9a739 MW |
52 | if (local->fif_fcsfail) |
53 | new_flags |= FIF_FCSFAIL; | |
54 | ||
55 | if (local->fif_plcpfail) | |
56 | new_flags |= FIF_PLCPFAIL; | |
57 | ||
58 | if (local->fif_control) | |
59 | new_flags |= FIF_CONTROL; | |
60 | ||
61 | if (local->fif_other_bss) | |
62 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 63 | |
e3b90ca2 IP |
64 | if (local->fif_pspoll) |
65 | new_flags |= FIF_PSPOLL; | |
66 | ||
3ac64bee | 67 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
68 | changed_flags = local->filter_flags ^ new_flags; |
69 | ||
22bedad3 | 70 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
71 | spin_unlock_bh(&local->filter_lock); |
72 | ||
4150c572 JB |
73 | /* be a bit nasty */ |
74 | new_flags |= (1<<31); | |
75 | ||
3ac64bee | 76 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
77 | |
78 | WARN_ON(new_flags & (1<<31)); | |
79 | ||
80 | local->filter_flags = new_flags & ~(1<<31); | |
81 | } | |
82 | ||
3ac64bee JB |
83 | static void ieee80211_reconfig_filter(struct work_struct *work) |
84 | { | |
85 | struct ieee80211_local *local = | |
86 | container_of(work, struct ieee80211_local, reconfig_filter); | |
87 | ||
88 | ieee80211_configure_filter(local); | |
89 | } | |
90 | ||
55de908a | 91 | static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
b2c258fb | 92 | { |
1ea6f9c0 | 93 | struct ieee80211_sub_if_data *sdata; |
675a0b04 | 94 | struct cfg80211_chan_def chandef = {}; |
55de908a | 95 | u32 changed = 0; |
e8975581 | 96 | int power; |
ffd2778b | 97 | u32 offchannel_flag; |
f0706e82 | 98 | |
ffd2778b | 99 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
675a0b04 | 100 | |
7ca15a0a SW |
101 | if (local->scan_chandef.chan) { |
102 | chandef = local->scan_chandef; | |
b23b025f | 103 | } else if (local->tmp_channel) { |
675a0b04 KB |
104 | chandef.chan = local->tmp_channel; |
105 | chandef.width = NL80211_CHAN_WIDTH_20_NOHT; | |
106 | chandef.center_freq1 = chandef.chan->center_freq; | |
107 | } else | |
108 | chandef = local->_oper_chandef; | |
109 | ||
110 | WARN(!cfg80211_chandef_valid(&chandef), | |
111 | "control:%d MHz width:%d center: %d/%d MHz", | |
112 | chandef.chan->center_freq, chandef.width, | |
113 | chandef.center_freq1, chandef.center_freq2); | |
114 | ||
115 | if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) | |
b23b025f BG |
116 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
117 | else | |
118 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
119 | ||
ffd2778b | 120 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 121 | |
675a0b04 KB |
122 | if (offchannel_flag || |
123 | !cfg80211_chandef_identical(&local->hw.conf.chandef, | |
124 | &local->_oper_chandef)) { | |
125 | local->hw.conf.chandef = chandef; | |
e8975581 JB |
126 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
127 | } | |
8318d78a | 128 | |
0f78231b JB |
129 | if (!conf_is_ht(&local->hw.conf)) { |
130 | /* | |
131 | * mac80211.h documents that this is only valid | |
132 | * when the channel is set to an HT type, and | |
133 | * that otherwise STATIC is used. | |
134 | */ | |
135 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
136 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
137 | local->hw.conf.smps_mode = local->smps_mode; | |
138 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
139 | } | |
140 | ||
0430c883 | 141 | power = ieee80211_chandef_max_power(&chandef); |
a8302de9 | 142 | |
1ea6f9c0 JB |
143 | rcu_read_lock(); |
144 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
145 | if (!rcu_access_pointer(sdata->vif.chanctx_conf)) | |
146 | continue; | |
764152ff FF |
147 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
148 | continue; | |
1ea6f9c0 JB |
149 | power = min(power, sdata->vif.bss_conf.txpower); |
150 | } | |
151 | rcu_read_unlock(); | |
a8302de9 | 152 | |
e8975581 JB |
153 | if (local->hw.conf.power_level != power) { |
154 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
155 | local->hw.conf.power_level = power; | |
156 | } | |
b2c258fb | 157 | |
55de908a JB |
158 | return changed; |
159 | } | |
160 | ||
161 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
162 | { | |
163 | int ret = 0; | |
164 | ||
165 | might_sleep(); | |
166 | ||
167 | if (!local->use_chanctx) | |
168 | changed |= ieee80211_hw_conf_chan(local); | |
169 | else | |
170 | changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | | |
171 | IEEE80211_CONF_CHANGE_POWER); | |
172 | ||
e8975581 | 173 | if (changed && local->open_count) { |
24487981 | 174 | ret = drv_config(local, changed); |
d73782fd | 175 | /* |
447107fb | 176 | * Goal: |
d73782fd JB |
177 | * HW reconfiguration should never fail, the driver has told |
178 | * us what it can support so it should live up to that promise. | |
447107fb RC |
179 | * |
180 | * Current status: | |
181 | * rfkill is not integrated with mac80211 and a | |
182 | * configuration command can thus fail if hardware rfkill | |
183 | * is enabled | |
184 | * | |
185 | * FIXME: integrate rfkill with mac80211 and then add this | |
186 | * WARN_ON() back | |
187 | * | |
d73782fd | 188 | */ |
447107fb | 189 | /* WARN_ON(ret); */ |
d73782fd | 190 | } |
f0706e82 | 191 | |
b2c258fb JB |
192 | return ret; |
193 | } | |
f0706e82 | 194 | |
471b3efd JB |
195 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
196 | u32 changed) | |
d9430a32 | 197 | { |
471b3efd JB |
198 | struct ieee80211_local *local = sdata->local; |
199 | ||
990baec0 | 200 | if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
471b3efd JB |
201 | return; |
202 | ||
12375ef9 | 203 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
204 | } |
205 | ||
f698d856 | 206 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 207 | { |
bda3933a JB |
208 | sdata->vif.bss_conf.use_cts_prot = false; |
209 | sdata->vif.bss_conf.use_short_preamble = false; | |
210 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
211 | return BSS_CHANGED_ERP_CTS_PROT | |
212 | BSS_CHANGED_ERP_PREAMBLE | | |
213 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
214 | } |
215 | ||
f0706e82 JB |
216 | static void ieee80211_tasklet_handler(unsigned long data) |
217 | { | |
218 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
219 | struct sk_buff *skb; | |
f0706e82 JB |
220 | |
221 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
222 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
223 | switch (skb->pkt_type) { | |
224 | case IEEE80211_RX_MSG: | |
51fb61e7 | 225 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
226 | * netstack. */ |
227 | skb->pkt_type = 0; | |
005e472b | 228 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
229 | break; |
230 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 231 | skb->pkt_type = 0; |
005e472b | 232 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 233 | break; |
f4ea83dd | 234 | default: |
5e3f3089 LF |
235 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
236 | skb->pkt_type); | |
f0706e82 JB |
237 | dev_kfree_skb(skb); |
238 | break; | |
239 | } | |
240 | } | |
241 | } | |
242 | ||
f2753ddb JB |
243 | static void ieee80211_restart_work(struct work_struct *work) |
244 | { | |
245 | struct ieee80211_local *local = | |
246 | container_of(work, struct ieee80211_local, restart_work); | |
ab499db8 | 247 | struct ieee80211_sub_if_data *sdata; |
f2753ddb | 248 | |
bc86863d SG |
249 | /* wait for scan work complete */ |
250 | flush_workqueue(local->workqueue); | |
2bc533bd | 251 | flush_work(&local->sched_scan_stopped_work); |
bc86863d | 252 | |
d43c6b6e DS |
253 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
254 | "%s called with hardware scan in progress\n", __func__); | |
bc86863d | 255 | |
f2753ddb | 256 | rtnl_lock(); |
ab499db8 MK |
257 | list_for_each_entry(sdata, &local->interfaces, list) |
258 | flush_delayed_work(&sdata->dec_tailroom_needed_wk); | |
4136c422 | 259 | ieee80211_scan_cancel(local); |
470f4d61 EP |
260 | |
261 | /* make sure any new ROC will consider local->in_reconfig */ | |
262 | flush_delayed_work(&local->roc_work); | |
263 | flush_work(&local->hw_roc_done); | |
264 | ||
f2753ddb JB |
265 | ieee80211_reconfig(local); |
266 | rtnl_unlock(); | |
267 | } | |
268 | ||
269 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
270 | { | |
271 | struct ieee80211_local *local = hw_to_local(hw); | |
272 | ||
b5878a2d JB |
273 | trace_api_restart_hw(local); |
274 | ||
b196d031 MB |
275 | wiphy_info(hw->wiphy, |
276 | "Hardware restart was requested\n"); | |
277 | ||
18145c69 | 278 | /* use this reason, ieee80211_reconfig will unblock it */ |
445ea4e8 | 279 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
280 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
281 | false); | |
f2753ddb | 282 | |
04800ada AN |
283 | /* |
284 | * Stop all Rx during the reconfig. We don't want state changes | |
285 | * or driver callbacks while this is in progress. | |
286 | */ | |
287 | local->in_reconfig = true; | |
288 | barrier(); | |
289 | ||
43d6df00 | 290 | queue_work(system_freezable_wq, &local->restart_work); |
f2753ddb JB |
291 | } |
292 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
293 | ||
26b36cfe | 294 | #ifdef CONFIG_INET |
2b2c009e JO |
295 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
296 | unsigned long data, void *arg) | |
297 | { | |
298 | struct in_ifaddr *ifa = arg; | |
299 | struct ieee80211_local *local = | |
300 | container_of(nb, struct ieee80211_local, | |
301 | ifa_notifier); | |
302 | struct net_device *ndev = ifa->ifa_dev->dev; | |
303 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 304 | struct in_device *idev; |
2b2c009e | 305 | struct ieee80211_sub_if_data *sdata; |
68542962 | 306 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 307 | struct ieee80211_if_managed *ifmgd; |
68542962 | 308 | int c = 0; |
2b2c009e JO |
309 | |
310 | /* Make sure it's our interface that got changed */ | |
311 | if (!wdev) | |
312 | return NOTIFY_DONE; | |
313 | ||
314 | if (wdev->wiphy != local->hw.wiphy) | |
315 | return NOTIFY_DONE; | |
316 | ||
2b2c009e | 317 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 318 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
319 | |
320 | /* ARP filtering is only supported in managed mode */ | |
321 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
322 | return NOTIFY_DONE; | |
323 | ||
95ae6b22 | 324 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
325 | if (!idev) |
326 | return NOTIFY_DONE; | |
327 | ||
2b2c009e | 328 | ifmgd = &sdata->u.mgd; |
8d61ffa5 | 329 | sdata_lock(sdata); |
68542962 JO |
330 | |
331 | /* Copy the addresses to the bss_conf list */ | |
332 | ifa = idev->ifa_list; | |
0f19b41e JB |
333 | while (ifa) { |
334 | if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) | |
335 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
68542962 JO |
336 | ifa = ifa->ifa_next; |
337 | c++; | |
338 | } | |
339 | ||
68542962 JO |
340 | bss_conf->arp_addr_cnt = c; |
341 | ||
53d69c39 | 342 | /* Configure driver only if associated (which also implies it is up) */ |
0f19b41e | 343 | if (ifmgd->associated) |
68542962 JO |
344 | ieee80211_bss_info_change_notify(sdata, |
345 | BSS_CHANGED_ARP_FILTER); | |
68542962 | 346 | |
8d61ffa5 | 347 | sdata_unlock(sdata); |
2b2c009e | 348 | |
8bd811aa | 349 | return NOTIFY_OK; |
2b2c009e | 350 | } |
26b36cfe | 351 | #endif |
2b2c009e | 352 | |
a65240c1 JB |
353 | #if IS_ENABLED(CONFIG_IPV6) |
354 | static int ieee80211_ifa6_changed(struct notifier_block *nb, | |
355 | unsigned long data, void *arg) | |
356 | { | |
357 | struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; | |
358 | struct inet6_dev *idev = ifa->idev; | |
359 | struct net_device *ndev = ifa->idev->dev; | |
360 | struct ieee80211_local *local = | |
361 | container_of(nb, struct ieee80211_local, ifa6_notifier); | |
362 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
363 | struct ieee80211_sub_if_data *sdata; | |
364 | ||
365 | /* Make sure it's our interface that got changed */ | |
366 | if (!wdev || wdev->wiphy != local->hw.wiphy) | |
367 | return NOTIFY_DONE; | |
368 | ||
369 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
370 | ||
371 | /* | |
372 | * For now only support station mode. This is mostly because | |
373 | * doing AP would have to handle AP_VLAN in some way ... | |
374 | */ | |
375 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
376 | return NOTIFY_DONE; | |
377 | ||
378 | drv_ipv6_addr_change(local, sdata, idev); | |
379 | ||
8bd811aa | 380 | return NOTIFY_OK; |
a65240c1 JB |
381 | } |
382 | #endif | |
383 | ||
2e161f78 JB |
384 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
385 | static const struct ieee80211_txrx_stypes | |
386 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
387 | [NL80211_IFTYPE_ADHOC] = { | |
388 | .tx = 0xffff, | |
3bfda62c WH |
389 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
390 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
41e31b8b AQ |
391 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
392 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
2e161f78 JB |
393 | }, |
394 | [NL80211_IFTYPE_STATION] = { | |
395 | .tx = 0xffff, | |
396 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
397 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
398 | }, | |
399 | [NL80211_IFTYPE_AP] = { | |
400 | .tx = 0xffff, | |
401 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
402 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
403 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
404 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
405 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
406 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
407 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
408 | }, | |
409 | [NL80211_IFTYPE_AP_VLAN] = { | |
410 | /* copy AP */ | |
411 | .tx = 0xffff, | |
412 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
413 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
414 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
415 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
416 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
417 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
418 | BIT(IEEE80211_STYPE_ACTION >> 4), |
419 | }, | |
420 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
421 | .tx = 0xffff, | |
422 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
423 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
424 | }, | |
425 | [NL80211_IFTYPE_P2P_GO] = { | |
426 | .tx = 0xffff, | |
427 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
428 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
429 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
430 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
431 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
432 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
433 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
434 | }, | |
c7108a71 JC |
435 | [NL80211_IFTYPE_MESH_POINT] = { |
436 | .tx = 0xffff, | |
71839121 JC |
437 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
438 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
439 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 440 | }, |
f142c6b9 JB |
441 | [NL80211_IFTYPE_P2P_DEVICE] = { |
442 | .tx = 0xffff, | |
443 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
444 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
445 | }, | |
2e161f78 JB |
446 | }; |
447 | ||
ef96a842 BG |
448 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
449 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
450 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
451 | ||
452 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
453 | IEEE80211_HT_CAP_MAX_AMSDU | | |
bc0784d9 | 454 | IEEE80211_HT_CAP_SGI_20 | |
a2e7495d | 455 | IEEE80211_HT_CAP_SGI_40 | |
9a07bf50 JM |
456 | IEEE80211_HT_CAP_LDPC_CODING | |
457 | IEEE80211_HT_CAP_40MHZ_INTOLERANT), | |
ef96a842 BG |
458 | .mcs = { |
459 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
460 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
461 | }, | |
462 | }; | |
463 | ||
dd5ecfea JB |
464 | static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
465 | .vht_cap_info = | |
466 | cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | | |
467 | IEEE80211_VHT_CAP_SHORT_GI_80 | | |
468 | IEEE80211_VHT_CAP_SHORT_GI_160 | | |
469 | IEEE80211_VHT_CAP_RXSTBC_1 | | |
470 | IEEE80211_VHT_CAP_RXSTBC_2 | | |
471 | IEEE80211_VHT_CAP_RXSTBC_3 | | |
472 | IEEE80211_VHT_CAP_RXSTBC_4 | | |
473 | IEEE80211_VHT_CAP_TXSTBC | | |
474 | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
475 | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | | |
476 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | | |
477 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | | |
478 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), | |
479 | .supp_mcs = { | |
480 | .rx_mcs_map = cpu_to_le16(~0), | |
481 | .tx_mcs_map = cpu_to_le16(~0), | |
482 | }, | |
483 | }; | |
484 | ||
ad28757e BG |
485 | struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, |
486 | const struct ieee80211_ops *ops, | |
487 | const char *requested_name) | |
f0706e82 | 488 | { |
f0706e82 | 489 | struct ieee80211_local *local; |
96f5e66e | 490 | int priv_size, i; |
f0706e82 | 491 | struct wiphy *wiphy; |
fe57d9f5 | 492 | bool use_chanctx; |
f0706e82 | 493 | |
c0af0734 JB |
494 | if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
495 | !ops->add_interface || !ops->remove_interface || | |
496 | !ops->configure_filter)) | |
497 | return NULL; | |
498 | ||
f09603a2 JB |
499 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
500 | return NULL; | |
501 | ||
e269d860 JB |
502 | /* check all or no channel context operations exist */ |
503 | i = !!ops->add_chanctx + !!ops->remove_chanctx + | |
504 | !!ops->change_chanctx + !!ops->assign_vif_chanctx + | |
505 | !!ops->unassign_vif_chanctx; | |
506 | if (WARN_ON(i != 0 && i != 5)) | |
507 | return NULL; | |
fe57d9f5 | 508 | use_chanctx = i == 5; |
e269d860 | 509 | |
f0706e82 JB |
510 | /* Ensure 32-byte alignment of our private data and hw private data. |
511 | * We use the wiphy priv data for both our ieee80211_local and for | |
512 | * the driver's private data | |
513 | * | |
514 | * In memory it'll be like this: | |
515 | * | |
516 | * +-------------------------+ | |
517 | * | struct wiphy | | |
518 | * +-------------------------+ | |
519 | * | struct ieee80211_local | | |
520 | * +-------------------------+ | |
521 | * | driver's private data | | |
522 | * +-------------------------+ | |
523 | * | |
524 | */ | |
1ce8e7b5 | 525 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 | 526 | |
ad28757e | 527 | wiphy = wiphy_new_nm(&mac80211_config_ops, priv_size, requested_name); |
f0706e82 JB |
528 | |
529 | if (!wiphy) | |
530 | return NULL; | |
531 | ||
2e161f78 JB |
532 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
533 | ||
207aba60 JB |
534 | wiphy->privid = mac80211_wiphy_privid; |
535 | ||
9bc383de JB |
536 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
537 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 538 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 539 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
540 | WIPHY_FLAG_OFFCHAN_TX; |
541 | ||
542 | if (ops->remain_on_channel) | |
543 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 544 | |
b292219f JB |
545 | wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
546 | NL80211_FEATURE_SAE | | |
1ea6f9c0 | 547 | NL80211_FEATURE_HT_IBSS | |
a6dad6a2 | 548 | NL80211_FEATURE_VIF_TXPOWER | |
b5dfae02 | 549 | NL80211_FEATURE_MAC_ON_CREATE | |
90f9ba9b JB |
550 | NL80211_FEATURE_USERSPACE_MPM | |
551 | NL80211_FEATURE_FULL_AP_CLIENT_STATE; | |
a729cff8 | 552 | |
cd2bb512 | 553 | if (!ops->hw_scan) |
5c95b940 AQ |
554 | wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
555 | NL80211_FEATURE_AP_SCAN; | |
556 | ||
cd2bb512 | 557 | |
207aba60 JB |
558 | if (!ops->set_key) |
559 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 560 | |
f278ce4f EG |
561 | wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_RRM); |
562 | ||
0c1ad2ca | 563 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
564 | |
565 | local = wiphy_priv(wiphy); | |
de95a54b | 566 | |
7bedd0cf JB |
567 | if (sta_info_init(local)) |
568 | goto err_free; | |
569 | ||
f0706e82 JB |
570 | local->hw.wiphy = wiphy; |
571 | ||
1ce8e7b5 | 572 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 JB |
573 | |
574 | local->ops = ops; | |
fe57d9f5 | 575 | local->use_chanctx = use_chanctx; |
f0706e82 | 576 | |
e6a9854b JB |
577 | /* set up some defaults */ |
578 | local->hw.queues = 1; | |
579 | local->hw.max_rates = 1; | |
78be49ec | 580 | local->hw.max_report_rates = 0; |
df6ba5d8 | 581 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 582 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 583 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
584 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
585 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
586 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
587 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
588 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
51648921 JB |
589 | local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
590 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; | |
219c3867 AB |
591 | local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
592 | local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
1ea6f9c0 | 593 | local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
ef96a842 | 594 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
dd5ecfea | 595 | wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
f0706e82 | 596 | |
e9a21949 LC |
597 | local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; |
598 | ||
599 | wiphy->extended_capabilities = local->ext_capa; | |
600 | wiphy->extended_capabilities_mask = local->ext_capa; | |
601 | wiphy->extended_capabilities_len = | |
602 | ARRAY_SIZE(local->ext_capa); | |
603 | ||
79010420 | 604 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
605 | |
606 | __hw_addr_init(&local->mc_list); | |
607 | ||
c771c9d8 | 608 | mutex_init(&local->iflist_mtx); |
a1699b75 | 609 | mutex_init(&local->mtx); |
f0706e82 | 610 | |
ad0e2b5a | 611 | mutex_init(&local->key_mtx); |
3b8d81e0 | 612 | spin_lock_init(&local->filter_lock); |
f9e124fb | 613 | spin_lock_init(&local->rx_path_lock); |
ce7c9111 KV |
614 | spin_lock_init(&local->queue_stop_reason_lock); |
615 | ||
d01a1e65 MK |
616 | INIT_LIST_HEAD(&local->chanctx_list); |
617 | mutex_init(&local->chanctx_mtx); | |
618 | ||
c2b13452 | 619 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 620 | |
f2753ddb JB |
621 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
622 | ||
164eb02d SW |
623 | INIT_WORK(&local->radar_detected_work, |
624 | ieee80211_dfs_radar_detected_work); | |
625 | ||
3ac64bee | 626 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b | 627 | local->smps_mode = IEEE80211_SMPS_OFF; |
3ac64bee | 628 | |
520eb820 KV |
629 | INIT_WORK(&local->dynamic_ps_enable_work, |
630 | ieee80211_dynamic_ps_enable_work); | |
631 | INIT_WORK(&local->dynamic_ps_disable_work, | |
632 | ieee80211_dynamic_ps_disable_work); | |
633 | setup_timer(&local->dynamic_ps_timer, | |
634 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
635 | ||
85a9994a LC |
636 | INIT_WORK(&local->sched_scan_stopped_work, |
637 | ieee80211_sched_scan_stopped_work); | |
638 | ||
c8ff71e6 AN |
639 | INIT_WORK(&local->tdls_chsw_work, ieee80211_tdls_chsw_work); |
640 | ||
a729cff8 JB |
641 | spin_lock_init(&local->ack_status_lock); |
642 | idr_init(&local->ack_status_frames); | |
a729cff8 | 643 | |
a6a67db2 | 644 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 645 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
646 | atomic_set(&local->agg_queue_stop[i], 0); |
647 | } | |
f0706e82 JB |
648 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
649 | (unsigned long)local); | |
f0706e82 JB |
650 | |
651 | tasklet_init(&local->tasklet, | |
652 | ieee80211_tasklet_handler, | |
653 | (unsigned long) local); | |
f0706e82 JB |
654 | |
655 | skb_queue_head_init(&local->skb_queue); | |
656 | skb_queue_head_init(&local->skb_queue_unreliable); | |
c8ff71e6 | 657 | skb_queue_head_init(&local->skb_queue_tdls_chsw); |
f0706e82 | 658 | |
8d5c2585 | 659 | ieee80211_alloc_led_names(local); |
fe67c913 | 660 | |
2eb278e0 | 661 | ieee80211_roc_setup(local); |
21f83589 | 662 | |
005e472b | 663 | return &local->hw; |
7bedd0cf JB |
664 | err_free: |
665 | wiphy_free(wiphy); | |
666 | return NULL; | |
f0706e82 | 667 | } |
ad28757e | 668 | EXPORT_SYMBOL(ieee80211_alloc_hw_nm); |
f0706e82 | 669 | |
2475b1cc | 670 | static int ieee80211_init_cipher_suites(struct ieee80211_local *local) |
f0706e82 | 671 | { |
2475b1cc MS |
672 | bool have_wep = !(IS_ERR(local->wep_tx_tfm) || |
673 | IS_ERR(local->wep_rx_tfm)); | |
30686bf7 | 674 | bool have_mfp = ieee80211_hw_check(&local->hw, MFP_CAPABLE); |
2475b1cc MS |
675 | int n_suites = 0, r = 0, w = 0; |
676 | u32 *suites; | |
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, | |
2b2ba0db | 683 | WLAN_CIPHER_SUITE_CCMP_256, |
00b9cfa3 JM |
684 | WLAN_CIPHER_SUITE_GCMP, |
685 | WLAN_CIPHER_SUITE_GCMP_256, | |
25e47c18 JB |
686 | |
687 | /* keep last -- depends on hw flags! */ | |
56c52da2 JM |
688 | WLAN_CIPHER_SUITE_AES_CMAC, |
689 | WLAN_CIPHER_SUITE_BIP_CMAC_256, | |
8ade538b JM |
690 | WLAN_CIPHER_SUITE_BIP_GMAC_128, |
691 | WLAN_CIPHER_SUITE_BIP_GMAC_256, | |
25e47c18 | 692 | }; |
8318d78a | 693 | |
30686bf7 | 694 | if (ieee80211_hw_check(&local->hw, SW_CRYPTO_CONTROL) || |
fa7e1fbc JB |
695 | local->hw.wiphy->cipher_suites) { |
696 | /* If the driver advertises, or doesn't support SW crypto, | |
697 | * we only need to remove WEP if necessary. | |
698 | */ | |
699 | if (have_wep) | |
700 | return 0; | |
701 | ||
702 | /* well if it has _no_ ciphers ... fine */ | |
703 | if (!local->hw.wiphy->n_cipher_suites) | |
704 | return 0; | |
705 | ||
706 | /* Driver provides cipher suites, but we need to exclude WEP */ | |
707 | suites = kmemdup(local->hw.wiphy->cipher_suites, | |
708 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
709 | GFP_KERNEL); | |
710 | if (!suites) | |
711 | return -ENOMEM; | |
2475b1cc | 712 | |
fa7e1fbc JB |
713 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { |
714 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
715 | ||
716 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
717 | suite == WLAN_CIPHER_SUITE_WEP104) | |
718 | continue; | |
719 | suites[w++] = suite; | |
720 | } | |
721 | } else if (!local->hw.cipher_schemes) { | |
722 | /* If the driver doesn't have cipher schemes, there's nothing | |
723 | * else to do other than assign the (software supported and | |
724 | * perhaps offloaded) cipher suites. | |
725 | */ | |
2475b1cc MS |
726 | local->hw.wiphy->cipher_suites = cipher_suites; |
727 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
728 | ||
729 | if (!have_mfp) | |
8ade538b | 730 | local->hw.wiphy->n_cipher_suites -= 4; |
2475b1cc MS |
731 | |
732 | if (!have_wep) { | |
733 | local->hw.wiphy->cipher_suites += 2; | |
734 | local->hw.wiphy->n_cipher_suites -= 2; | |
735 | } | |
736 | ||
fa7e1fbc | 737 | /* not dynamically allocated, so just return */ |
2475b1cc | 738 | return 0; |
fa7e1fbc JB |
739 | } else { |
740 | const struct ieee80211_cipher_scheme *cs; | |
2475b1cc | 741 | |
fa7e1fbc JB |
742 | cs = local->hw.cipher_schemes; |
743 | ||
744 | /* Driver specifies cipher schemes only (but not cipher suites | |
745 | * including the schemes) | |
746 | * | |
00b9cfa3 | 747 | * We start counting ciphers defined by schemes, TKIP, CCMP, |
2b2ba0db | 748 | * CCMP-256, GCMP, and GCMP-256 |
2475b1cc | 749 | */ |
2b2ba0db | 750 | n_suites = local->hw.n_cipher_schemes + 5; |
2475b1cc MS |
751 | |
752 | /* check if we have WEP40 and WEP104 */ | |
753 | if (have_wep) | |
754 | n_suites += 2; | |
755 | ||
8ade538b JM |
756 | /* check if we have AES_CMAC, BIP-CMAC-256, BIP-GMAC-128, |
757 | * BIP-GMAC-256 | |
758 | */ | |
2475b1cc | 759 | if (have_mfp) |
8ade538b | 760 | n_suites += 4; |
2475b1cc MS |
761 | |
762 | suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL); | |
763 | if (!suites) | |
764 | return -ENOMEM; | |
765 | ||
766 | suites[w++] = WLAN_CIPHER_SUITE_CCMP; | |
2b2ba0db | 767 | suites[w++] = WLAN_CIPHER_SUITE_CCMP_256; |
2475b1cc | 768 | suites[w++] = WLAN_CIPHER_SUITE_TKIP; |
00b9cfa3 JM |
769 | suites[w++] = WLAN_CIPHER_SUITE_GCMP; |
770 | suites[w++] = WLAN_CIPHER_SUITE_GCMP_256; | |
2475b1cc MS |
771 | |
772 | if (have_wep) { | |
773 | suites[w++] = WLAN_CIPHER_SUITE_WEP40; | |
774 | suites[w++] = WLAN_CIPHER_SUITE_WEP104; | |
775 | } | |
776 | ||
56c52da2 | 777 | if (have_mfp) { |
2475b1cc | 778 | suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC; |
56c52da2 | 779 | suites[w++] = WLAN_CIPHER_SUITE_BIP_CMAC_256; |
8ade538b JM |
780 | suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_128; |
781 | suites[w++] = WLAN_CIPHER_SUITE_BIP_GMAC_256; | |
56c52da2 | 782 | } |
2475b1cc | 783 | |
e3a55b53 | 784 | for (r = 0; r < local->hw.n_cipher_schemes; r++) { |
2475b1cc | 785 | suites[w++] = cs[r].cipher; |
94c78cb4 JB |
786 | if (WARN_ON(cs[r].pn_len > IEEE80211_MAX_PN_LEN)) { |
787 | kfree(suites); | |
e3a55b53 | 788 | return -EINVAL; |
94c78cb4 | 789 | } |
e3a55b53 | 790 | } |
2475b1cc MS |
791 | } |
792 | ||
793 | local->hw.wiphy->cipher_suites = suites; | |
794 | local->hw.wiphy->n_cipher_suites = w; | |
795 | local->wiphy_ciphers_allocated = true; | |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
801 | { | |
802 | struct ieee80211_local *local = hw_to_local(hw); | |
803 | int result, i; | |
57fbcce3 | 804 | enum nl80211_band band; |
2475b1cc MS |
805 | int channels, max_bitrates; |
806 | bool supp_ht, supp_vht; | |
807 | netdev_features_t feature_whitelist; | |
808 | struct cfg80211_chan_def dflt_chandef = {}; | |
809 | ||
30686bf7 | 810 | if (ieee80211_hw_check(hw, QUEUE_CONTROL) && |
3a25a8c8 JB |
811 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || |
812 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
813 | return -EINVAL; | |
814 | ||
a7a6bdd0 AN |
815 | if ((hw->wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) && |
816 | (!local->ops->tdls_channel_switch || | |
8a4d32f3 AN |
817 | !local->ops->tdls_cancel_channel_switch || |
818 | !local->ops->tdls_recv_channel_switch)) | |
a7a6bdd0 AN |
819 | return -EOPNOTSUPP; |
820 | ||
38bb3e9d | 821 | #ifdef CONFIG_PM |
964dc9e2 | 822 | if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) |
eecc4800 | 823 | return -EINVAL; |
dfb89c56 | 824 | #endif |
eecc4800 | 825 | |
fe57d9f5 JB |
826 | if (!local->use_chanctx) { |
827 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
828 | const struct ieee80211_iface_combination *comb; | |
829 | ||
830 | comb = &local->hw.wiphy->iface_combinations[i]; | |
831 | ||
832 | if (comb->num_different_channels > 1) | |
833 | return -EINVAL; | |
834 | } | |
746a3365 | 835 | } else { |
fe57d9f5 JB |
836 | /* |
837 | * WDS is currently prohibited when channel contexts are used | |
838 | * because there's no clear definition of which channel WDS | |
839 | * type interfaces use | |
840 | */ | |
841 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)) | |
842 | return -EINVAL; | |
164eb02d | 843 | |
486cf4c0 | 844 | /* DFS is not supported with multi-channel combinations yet */ |
164eb02d SW |
845 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { |
846 | const struct ieee80211_iface_combination *comb; | |
847 | ||
848 | comb = &local->hw.wiphy->iface_combinations[i]; | |
849 | ||
486cf4c0 MK |
850 | if (comb->radar_detect_widths && |
851 | comb->num_different_channels > 1) | |
164eb02d SW |
852 | return -EINVAL; |
853 | } | |
fe57d9f5 JB |
854 | } |
855 | ||
72d78728 AN |
856 | /* Only HW csum features are currently compatible with mac80211 */ |
857 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
80616c0d | 858 | NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA | |
e0352123 | 859 | NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM; |
72d78728 AN |
860 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) |
861 | return -EINVAL; | |
862 | ||
78be49ec HS |
863 | if (hw->max_report_rates == 0) |
864 | hw->max_report_rates = hw->max_rates; | |
865 | ||
04ecd257 JB |
866 | local->rx_chains = 1; |
867 | ||
8318d78a JB |
868 | /* |
869 | * generic code guarantees at least one band, | |
870 | * set this very early because much code assumes | |
871 | * that hw.conf.channel is assigned | |
872 | */ | |
2a519311 | 873 | channels = 0; |
de95a54b | 874 | max_bitrates = 0; |
5ef2d41a | 875 | supp_ht = false; |
ba0afa2f | 876 | supp_vht = false; |
57fbcce3 | 877 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
8318d78a JB |
878 | struct ieee80211_supported_band *sband; |
879 | ||
880 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
881 | if (!sband) |
882 | continue; | |
fffa4b1c KB |
883 | |
884 | if (!dflt_chandef.chan) { | |
885 | cfg80211_chandef_create(&dflt_chandef, | |
886 | &sband->channels[0], | |
887 | NL80211_CHAN_NO_HT); | |
8318d78a | 888 | /* init channel we're on */ |
fffa4b1c KB |
889 | if (!local->use_chanctx && !local->_oper_chandef.chan) { |
890 | local->hw.conf.chandef = dflt_chandef; | |
891 | local->_oper_chandef = dflt_chandef; | |
892 | } | |
893 | local->monitor_chandef = dflt_chandef; | |
8318d78a | 894 | } |
fffa4b1c | 895 | |
de95a54b JB |
896 | channels += sband->n_channels; |
897 | ||
898 | if (max_bitrates < sband->n_bitrates) | |
899 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 900 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 901 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
04ecd257 JB |
902 | |
903 | if (sband->ht_cap.ht_supported) | |
904 | local->rx_chains = | |
905 | max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), | |
906 | local->rx_chains); | |
907 | ||
908 | /* TODO: consider VHT for RX chains, hopefully it's the same */ | |
8318d78a | 909 | } |
f0706e82 | 910 | |
f59ac048 | 911 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
912 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
913 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
914 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
915 | } | |
f59ac048 LR |
916 | |
917 | /* mac80211 always supports monitor */ | |
7527a782 JB |
918 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
919 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
920 | ||
55de908a | 921 | /* mac80211 doesn't support more than one IBSS interface right now */ |
8e621fc9 JB |
922 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
923 | const struct ieee80211_iface_combination *c; | |
924 | int j; | |
925 | ||
926 | c = &hw->wiphy->iface_combinations[i]; | |
927 | ||
8e621fc9 JB |
928 | for (j = 0; j < c->n_limits; j++) |
929 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
930 | c->limits[j].max > 1) | |
931 | return -EINVAL; | |
932 | } | |
933 | ||
5b0ec94f JB |
934 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
935 | sizeof(void *) * channels, GFP_KERNEL); | |
936 | if (!local->int_scan_req) | |
937 | return -ENOMEM; | |
938 | ||
57fbcce3 | 939 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
5b0ec94f JB |
940 | if (!local->hw.wiphy->bands[band]) |
941 | continue; | |
942 | local->int_scan_req->rates[band] = (u32) -1; | |
943 | } | |
944 | ||
5eb5a52d JB |
945 | #ifndef CONFIG_MAC80211_MESH |
946 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
947 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
948 | #endif | |
949 | ||
1570ca59 JC |
950 | /* if the underlying driver supports mesh, mac80211 will (at least) |
951 | * provide routing of mesh authentication frames to userspace */ | |
952 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
953 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
954 | ||
a621fa4d JB |
955 | /* mac80211 supports control port protocol changing */ |
956 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
957 | ||
30686bf7 | 958 | if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) { |
77965c97 | 959 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
30686bf7 | 960 | } else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) { |
77965c97 | 961 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
52512072 | 962 | if (hw->max_signal <= 0) { |
963 | result = -EINVAL; | |
964 | goto fail_wiphy_register; | |
965 | } | |
966 | } | |
77965c97 | 967 | |
de95a54b JB |
968 | /* |
969 | * Calculate scan IE length -- we need this to alloc | |
970 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 971 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
972 | * information -- SSID is the driver's responsibility. |
973 | */ | |
dc9f48ce JM |
974 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
975 | 3 /* DS Params */; | |
5ef2d41a JB |
976 | if (supp_ht) |
977 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 978 | |
d0e6c21a | 979 | if (supp_vht) |
ba0afa2f | 980 | local->scan_ies_len += |
d4950281 | 981 | 2 + sizeof(struct ieee80211_vht_cap); |
ba0afa2f | 982 | |
de95a54b JB |
983 | if (!local->ops->hw_scan) { |
984 | /* For hw_scan, driver needs to set these up. */ | |
985 | local->hw.wiphy->max_scan_ssids = 4; | |
986 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
987 | } | |
988 | ||
989 | /* | |
990 | * If the driver supports any scan IEs, then assume the | |
991 | * limit includes the IEs mac80211 will add, otherwise | |
992 | * leave it at zero and let the driver sort it out; we | |
993 | * still pass our IEs to the driver but userspace will | |
994 | * not be allowed to in that case. | |
995 | */ | |
996 | if (local->hw.wiphy->max_scan_ie_len) | |
997 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
998 | ||
2475b1cc MS |
999 | WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes, |
1000 | local->hw.n_cipher_schemes)); | |
1001 | ||
1002 | result = ieee80211_init_cipher_suites(local); | |
1003 | if (result < 0) | |
1004 | goto fail_wiphy_register; | |
25e47c18 | 1005 | |
21f83589 JB |
1006 | if (!local->ops->remain_on_channel) |
1007 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 1008 | |
dfe018bf AN |
1009 | /* mac80211 based drivers don't support internal TDLS setup */ |
1010 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
1011 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
1012 | ||
e9a21949 | 1013 | /* mac80211 supports eCSA, if the driver supports STA CSA at all */ |
30686bf7 | 1014 | if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) |
e9a21949 LC |
1015 | local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; |
1016 | ||
0d06d9ba AO |
1017 | local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM; |
1018 | ||
f0706e82 JB |
1019 | result = wiphy_register(local->hw.wiphy); |
1020 | if (result < 0) | |
2a519311 | 1021 | goto fail_wiphy_register; |
f0706e82 | 1022 | |
e2530083 JB |
1023 | /* |
1024 | * We use the number of queues for feature tests (QoS, HT) internally | |
1025 | * so restrict them appropriately. | |
1026 | */ | |
e2530083 JB |
1027 | if (hw->queues > IEEE80211_MAX_QUEUES) |
1028 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 1029 | |
42935eca | 1030 | local->workqueue = |
d8537548 | 1031 | alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); |
42935eca | 1032 | if (!local->workqueue) { |
f0706e82 JB |
1033 | result = -ENOMEM; |
1034 | goto fail_workqueue; | |
1035 | } | |
1036 | ||
b306f453 JB |
1037 | /* |
1038 | * The hardware needs headroom for sending the frame, | |
1039 | * and we need some headroom for passing the frame to monitor | |
1040 | * interfaces, but never both at the same time. | |
1041 | */ | |
33ccad35 | 1042 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 1043 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 1044 | |
e9f207f0 JB |
1045 | debugfs_hw_add(local); |
1046 | ||
b446918b HS |
1047 | /* |
1048 | * if the driver doesn't specify a max listen interval we | |
1049 | * use 5 which should be a safe default | |
1050 | */ | |
ea95bba4 | 1051 | if (local->hw.max_listen_interval == 0) |
b446918b | 1052 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
1053 | |
1054 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
1055 | ||
ff616381 | 1056 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 1057 | |
ba8c3d6f FF |
1058 | if (!local->hw.txq_ac_max_pending) |
1059 | local->hw.txq_ac_max_pending = 64; | |
1060 | ||
d4c4a9a1 | 1061 | result = ieee80211_wep_init(local); |
3473187d | 1062 | if (result < 0) |
0fb9a9ec JP |
1063 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
1064 | result); | |
d4c4a9a1 | 1065 | |
24d47300 KB |
1066 | local->hw.conf.flags = IEEE80211_CONF_IDLE; |
1067 | ||
b57e6b56 MSS |
1068 | ieee80211_led_init(local); |
1069 | ||
f0706e82 | 1070 | rtnl_lock(); |
f0706e82 | 1071 | |
830f9038 JB |
1072 | result = ieee80211_init_rate_ctrl_alg(local, |
1073 | hw->rate_control_algorithm); | |
f0706e82 | 1074 | if (result < 0) { |
0fb9a9ec JP |
1075 | wiphy_debug(local->hw.wiphy, |
1076 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
1077 | goto fail_rate; |
1078 | } | |
1079 | ||
8dffff21 | 1080 | /* add one default STA interface if supported */ |
e27513fb | 1081 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) && |
30686bf7 | 1082 | !ieee80211_hw_check(hw, NO_AUTO_VIF)) { |
6bab2e19 | 1083 | result = ieee80211_if_add(local, "wlan%d", NET_NAME_ENUM, NULL, |
8dffff21 JB |
1084 | NL80211_IFTYPE_STATION, NULL); |
1085 | if (result) | |
0fb9a9ec JP |
1086 | wiphy_warn(local->hw.wiphy, |
1087 | "Failed to add default virtual iface\n"); | |
8dffff21 | 1088 | } |
f0706e82 | 1089 | |
f0706e82 JB |
1090 | rtnl_unlock(); |
1091 | ||
26b36cfe | 1092 | #ifdef CONFIG_INET |
2b2c009e JO |
1093 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
1094 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
1095 | if (result) | |
1096 | goto fail_ifa; | |
26b36cfe | 1097 | #endif |
2b2c009e | 1098 | |
a65240c1 JB |
1099 | #if IS_ENABLED(CONFIG_IPV6) |
1100 | local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; | |
1101 | result = register_inet6addr_notifier(&local->ifa6_notifier); | |
1102 | if (result) | |
1103 | goto fail_ifa6; | |
1104 | #endif | |
1105 | ||
f0706e82 JB |
1106 | return 0; |
1107 | ||
a65240c1 JB |
1108 | #if IS_ENABLED(CONFIG_IPV6) |
1109 | fail_ifa6: | |
93c08c32 | 1110 | #ifdef CONFIG_INET |
a65240c1 JB |
1111 | unregister_inetaddr_notifier(&local->ifa_notifier); |
1112 | #endif | |
1113 | #endif | |
1114 | #if defined(CONFIG_INET) || defined(CONFIG_IPV6) | |
2b2c009e | 1115 | fail_ifa: |
93c08c32 | 1116 | #endif |
54330bf6 JB |
1117 | rtnl_lock(); |
1118 | rate_control_deinitialize(local); | |
10f644a4 | 1119 | ieee80211_remove_interfaces(local); |
10f644a4 | 1120 | fail_rate: |
f0706e82 | 1121 | rtnl_unlock(); |
54330bf6 | 1122 | ieee80211_led_exit(local); |
d4c4a9a1 | 1123 | ieee80211_wep_free(local); |
42935eca | 1124 | destroy_workqueue(local->workqueue); |
10f644a4 | 1125 | fail_workqueue: |
f0706e82 | 1126 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 1127 | fail_wiphy_register: |
3ffc2a90 JB |
1128 | if (local->wiphy_ciphers_allocated) |
1129 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 1130 | kfree(local->int_scan_req); |
f0706e82 JB |
1131 | return result; |
1132 | } | |
1133 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1134 | ||
f0706e82 JB |
1135 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1136 | { | |
1137 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1138 | |
1139 | tasklet_kill(&local->tx_pending_tasklet); | |
1140 | tasklet_kill(&local->tasklet); | |
1141 | ||
26b36cfe | 1142 | #ifdef CONFIG_INET |
2b2c009e | 1143 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1144 | #endif |
a65240c1 JB |
1145 | #if IS_ENABLED(CONFIG_IPV6) |
1146 | unregister_inet6addr_notifier(&local->ifa6_notifier); | |
1147 | #endif | |
10f644a4 | 1148 | |
f0706e82 JB |
1149 | rtnl_lock(); |
1150 | ||
79010420 JB |
1151 | /* |
1152 | * At this point, interface list manipulations are fine | |
1153 | * because the driver cannot be handing us frames any | |
1154 | * more and the tasklet is killed. | |
1155 | */ | |
75636525 | 1156 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1157 | |
f0706e82 JB |
1158 | rtnl_unlock(); |
1159 | ||
aaa016cc | 1160 | cancel_delayed_work_sync(&local->roc_work); |
258086a4 | 1161 | cancel_work_sync(&local->restart_work); |
3ac64bee | 1162 | cancel_work_sync(&local->reconfig_filter); |
c8ff71e6 | 1163 | cancel_work_sync(&local->tdls_chsw_work); |
18db594a | 1164 | flush_work(&local->sched_scan_stopped_work); |
3ac64bee | 1165 | |
f0706e82 | 1166 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1167 | rate_control_deinitialize(local); |
1168 | ||
f64f9e71 JP |
1169 | if (skb_queue_len(&local->skb_queue) || |
1170 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1171 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1172 | skb_queue_purge(&local->skb_queue); |
1173 | skb_queue_purge(&local->skb_queue_unreliable); | |
c8ff71e6 | 1174 | skb_queue_purge(&local->skb_queue_tdls_chsw); |
f0706e82 | 1175 | |
42935eca | 1176 | destroy_workqueue(local->workqueue); |
f0706e82 JB |
1177 | wiphy_unregister(local->hw.wiphy); |
1178 | ieee80211_wep_free(local); | |
1179 | ieee80211_led_exit(local); | |
5ba63533 | 1180 | kfree(local->int_scan_req); |
f0706e82 JB |
1181 | } |
1182 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1183 | ||
a729cff8 JB |
1184 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1185 | { | |
1186 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1187 | kfree_skb(p); | |
1188 | return 0; | |
1189 | } | |
1190 | ||
f0706e82 JB |
1191 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1192 | { | |
1193 | struct ieee80211_local *local = hw_to_local(hw); | |
1194 | ||
c771c9d8 | 1195 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1196 | mutex_destroy(&local->mtx); |
c771c9d8 | 1197 | |
3ffc2a90 JB |
1198 | if (local->wiphy_ciphers_allocated) |
1199 | kfree(local->hw.wiphy->cipher_suites); | |
1200 | ||
a729cff8 JB |
1201 | idr_for_each(&local->ack_status_frames, |
1202 | ieee80211_free_ack_frame, NULL); | |
1203 | idr_destroy(&local->ack_status_frames); | |
1204 | ||
54330bf6 JB |
1205 | sta_info_stop(local); |
1206 | ||
8d5c2585 JB |
1207 | ieee80211_free_led_names(local); |
1208 | ||
f0706e82 JB |
1209 | wiphy_free(local->hw.wiphy); |
1210 | } | |
1211 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1212 | ||
f0706e82 JB |
1213 | static int __init ieee80211_init(void) |
1214 | { | |
1215 | struct sk_buff *skb; | |
1216 | int ret; | |
1217 | ||
e039fa4a JB |
1218 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1219 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1220 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1221 | |
cccf129f FF |
1222 | ret = rc80211_minstrel_init(); |
1223 | if (ret) | |
1224 | return ret; | |
1225 | ||
ec8aa669 FF |
1226 | ret = rc80211_minstrel_ht_init(); |
1227 | if (ret) | |
1228 | goto err_minstrel; | |
1229 | ||
47846c9b JB |
1230 | ret = ieee80211_iface_init(); |
1231 | if (ret) | |
1232 | goto err_netdev; | |
e9f207f0 | 1233 | |
f0706e82 | 1234 | return 0; |
47846c9b | 1235 | err_netdev: |
ec8aa669 FF |
1236 | rc80211_minstrel_ht_exit(); |
1237 | err_minstrel: | |
47846c9b JB |
1238 | rc80211_minstrel_exit(); |
1239 | ||
1240 | return ret; | |
f0706e82 JB |
1241 | } |
1242 | ||
f0706e82 JB |
1243 | static void __exit ieee80211_exit(void) |
1244 | { | |
ec8aa669 | 1245 | rc80211_minstrel_ht_exit(); |
cccf129f | 1246 | rc80211_minstrel_exit(); |
ac71c691 | 1247 | |
bf7cd94d | 1248 | ieee80211s_stop(); |
902acc78 | 1249 | |
47846c9b | 1250 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1251 | |
1252 | rcu_barrier(); | |
f0706e82 JB |
1253 | } |
1254 | ||
1255 | ||
ca9938fe | 1256 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1257 | module_exit(ieee80211_exit); |
1258 | ||
1259 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1260 | MODULE_LICENSE("GPL"); |