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> |
e8db0be1 | 23 | #include <linux/pm_qos.h> |
68542962 | 24 | #include <linux/inetdevice.h> |
881d966b | 25 | #include <net/net_namespace.h> |
f0706e82 | 26 | #include <net/cfg80211.h> |
a65240c1 | 27 | #include <net/addrconf.h> |
f0706e82 | 28 | |
f0706e82 | 29 | #include "ieee80211_i.h" |
24487981 | 30 | #include "driver-ops.h" |
2c8dccc7 | 31 | #include "rate.h" |
f7a92144 | 32 | #include "mesh.h" |
f0706e82 | 33 | #include "wep.h" |
2c8dccc7 | 34 | #include "led.h" |
e0eb6859 | 35 | #include "cfg.h" |
e9f207f0 | 36 | #include "debugfs.h" |
f0706e82 | 37 | |
0d143fe1 | 38 | void ieee80211_configure_filter(struct ieee80211_local *local) |
4150c572 | 39 | { |
3ac64bee | 40 | u64 mc; |
4150c572 JB |
41 | unsigned int changed_flags; |
42 | unsigned int new_flags = 0; | |
43 | ||
53918994 | 44 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
45 | new_flags |= FIF_PROMISC_IN_BSS; |
46 | ||
53918994 | 47 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
48 | new_flags |= FIF_ALLMULTI; |
49 | ||
8a690674 BG |
50 | if (local->monitors || test_bit(SCAN_SW_SCANNING, &local->scanning) || |
51 | test_bit(SCAN_ONCHANNEL_SCANNING, &local->scanning)) | |
8cc9a739 MW |
52 | new_flags |= FIF_BCN_PRBRESP_PROMISC; |
53 | ||
7be5086d JB |
54 | if (local->fif_probe_req || local->probe_req_reg) |
55 | new_flags |= FIF_PROBE_REQ; | |
56 | ||
8cc9a739 MW |
57 | if (local->fif_fcsfail) |
58 | new_flags |= FIF_FCSFAIL; | |
59 | ||
60 | if (local->fif_plcpfail) | |
61 | new_flags |= FIF_PLCPFAIL; | |
62 | ||
63 | if (local->fif_control) | |
64 | new_flags |= FIF_CONTROL; | |
65 | ||
66 | if (local->fif_other_bss) | |
67 | new_flags |= FIF_OTHER_BSS; | |
4150c572 | 68 | |
e3b90ca2 IP |
69 | if (local->fif_pspoll) |
70 | new_flags |= FIF_PSPOLL; | |
71 | ||
3ac64bee | 72 | spin_lock_bh(&local->filter_lock); |
4150c572 JB |
73 | changed_flags = local->filter_flags ^ new_flags; |
74 | ||
22bedad3 | 75 | mc = drv_prepare_multicast(local, &local->mc_list); |
3ac64bee JB |
76 | spin_unlock_bh(&local->filter_lock); |
77 | ||
4150c572 JB |
78 | /* be a bit nasty */ |
79 | new_flags |= (1<<31); | |
80 | ||
3ac64bee | 81 | drv_configure_filter(local, changed_flags, &new_flags, mc); |
4150c572 JB |
82 | |
83 | WARN_ON(new_flags & (1<<31)); | |
84 | ||
85 | local->filter_flags = new_flags & ~(1<<31); | |
86 | } | |
87 | ||
3ac64bee JB |
88 | static void ieee80211_reconfig_filter(struct work_struct *work) |
89 | { | |
90 | struct ieee80211_local *local = | |
91 | container_of(work, struct ieee80211_local, reconfig_filter); | |
92 | ||
93 | ieee80211_configure_filter(local); | |
94 | } | |
95 | ||
55de908a | 96 | static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local) |
b2c258fb | 97 | { |
1ea6f9c0 | 98 | struct ieee80211_sub_if_data *sdata; |
675a0b04 | 99 | struct cfg80211_chan_def chandef = {}; |
55de908a | 100 | u32 changed = 0; |
e8975581 | 101 | int power; |
ffd2778b | 102 | u32 offchannel_flag; |
f0706e82 | 103 | |
ffd2778b | 104 | offchannel_flag = local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
675a0b04 | 105 | |
7ca15a0a SW |
106 | if (local->scan_chandef.chan) { |
107 | chandef = local->scan_chandef; | |
b23b025f | 108 | } else if (local->tmp_channel) { |
675a0b04 KB |
109 | chandef.chan = local->tmp_channel; |
110 | chandef.width = NL80211_CHAN_WIDTH_20_NOHT; | |
111 | chandef.center_freq1 = chandef.chan->center_freq; | |
112 | } else | |
113 | chandef = local->_oper_chandef; | |
114 | ||
115 | WARN(!cfg80211_chandef_valid(&chandef), | |
116 | "control:%d MHz width:%d center: %d/%d MHz", | |
117 | chandef.chan->center_freq, chandef.width, | |
118 | chandef.center_freq1, chandef.center_freq2); | |
119 | ||
120 | if (!cfg80211_chandef_identical(&chandef, &local->_oper_chandef)) | |
b23b025f BG |
121 | local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL; |
122 | else | |
123 | local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL; | |
124 | ||
ffd2778b | 125 | offchannel_flag ^= local->hw.conf.flags & IEEE80211_CONF_OFFCHANNEL; |
f0706e82 | 126 | |
675a0b04 KB |
127 | if (offchannel_flag || |
128 | !cfg80211_chandef_identical(&local->hw.conf.chandef, | |
129 | &local->_oper_chandef)) { | |
130 | local->hw.conf.chandef = chandef; | |
e8975581 JB |
131 | changed |= IEEE80211_CONF_CHANGE_CHANNEL; |
132 | } | |
8318d78a | 133 | |
0f78231b JB |
134 | if (!conf_is_ht(&local->hw.conf)) { |
135 | /* | |
136 | * mac80211.h documents that this is only valid | |
137 | * when the channel is set to an HT type, and | |
138 | * that otherwise STATIC is used. | |
139 | */ | |
140 | local->hw.conf.smps_mode = IEEE80211_SMPS_STATIC; | |
141 | } else if (local->hw.conf.smps_mode != local->smps_mode) { | |
142 | local->hw.conf.smps_mode = local->smps_mode; | |
143 | changed |= IEEE80211_CONF_CHANGE_SMPS; | |
144 | } | |
145 | ||
0430c883 | 146 | power = ieee80211_chandef_max_power(&chandef); |
a8302de9 | 147 | |
1ea6f9c0 JB |
148 | rcu_read_lock(); |
149 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
150 | if (!rcu_access_pointer(sdata->vif.chanctx_conf)) | |
151 | continue; | |
764152ff FF |
152 | if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
153 | continue; | |
1ea6f9c0 JB |
154 | power = min(power, sdata->vif.bss_conf.txpower); |
155 | } | |
156 | rcu_read_unlock(); | |
a8302de9 | 157 | |
e8975581 JB |
158 | if (local->hw.conf.power_level != power) { |
159 | changed |= IEEE80211_CONF_CHANGE_POWER; | |
160 | local->hw.conf.power_level = power; | |
161 | } | |
b2c258fb | 162 | |
55de908a JB |
163 | return changed; |
164 | } | |
165 | ||
166 | int ieee80211_hw_config(struct ieee80211_local *local, u32 changed) | |
167 | { | |
168 | int ret = 0; | |
169 | ||
170 | might_sleep(); | |
171 | ||
172 | if (!local->use_chanctx) | |
173 | changed |= ieee80211_hw_conf_chan(local); | |
174 | else | |
175 | changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL | | |
176 | IEEE80211_CONF_CHANGE_POWER); | |
177 | ||
e8975581 | 178 | if (changed && local->open_count) { |
24487981 | 179 | ret = drv_config(local, changed); |
d73782fd | 180 | /* |
447107fb | 181 | * Goal: |
d73782fd JB |
182 | * HW reconfiguration should never fail, the driver has told |
183 | * us what it can support so it should live up to that promise. | |
447107fb RC |
184 | * |
185 | * Current status: | |
186 | * rfkill is not integrated with mac80211 and a | |
187 | * configuration command can thus fail if hardware rfkill | |
188 | * is enabled | |
189 | * | |
190 | * FIXME: integrate rfkill with mac80211 and then add this | |
191 | * WARN_ON() back | |
192 | * | |
d73782fd | 193 | */ |
447107fb | 194 | /* WARN_ON(ret); */ |
d73782fd | 195 | } |
f0706e82 | 196 | |
b2c258fb JB |
197 | return ret; |
198 | } | |
f0706e82 | 199 | |
471b3efd JB |
200 | void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, |
201 | u32 changed) | |
d9430a32 | 202 | { |
471b3efd JB |
203 | struct ieee80211_local *local = sdata->local; |
204 | ||
990baec0 | 205 | if (!changed || sdata->vif.type == NL80211_IFTYPE_AP_VLAN) |
471b3efd JB |
206 | return; |
207 | ||
12375ef9 | 208 | drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed); |
d9430a32 DD |
209 | } |
210 | ||
f698d856 | 211 | u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata) |
d9430a32 | 212 | { |
bda3933a JB |
213 | sdata->vif.bss_conf.use_cts_prot = false; |
214 | sdata->vif.bss_conf.use_short_preamble = false; | |
215 | sdata->vif.bss_conf.use_short_slot = false; | |
7a5158ef JB |
216 | return BSS_CHANGED_ERP_CTS_PROT | |
217 | BSS_CHANGED_ERP_PREAMBLE | | |
218 | BSS_CHANGED_ERP_SLOT; | |
d9430a32 DD |
219 | } |
220 | ||
f0706e82 JB |
221 | static void ieee80211_tasklet_handler(unsigned long data) |
222 | { | |
223 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
224 | struct sk_buff *skb; | |
f0706e82 JB |
225 | |
226 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
227 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
228 | switch (skb->pkt_type) { | |
229 | case IEEE80211_RX_MSG: | |
51fb61e7 | 230 | /* Clear skb->pkt_type in order to not confuse kernel |
f0706e82 JB |
231 | * netstack. */ |
232 | skb->pkt_type = 0; | |
005e472b | 233 | ieee80211_rx(&local->hw, skb); |
f0706e82 JB |
234 | break; |
235 | case IEEE80211_TX_STATUS_MSG: | |
f0706e82 | 236 | skb->pkt_type = 0; |
005e472b | 237 | ieee80211_tx_status(&local->hw, skb); |
f0706e82 | 238 | break; |
f4ea83dd | 239 | default: |
5e3f3089 LF |
240 | WARN(1, "mac80211: Packet is of unknown type %d\n", |
241 | skb->pkt_type); | |
f0706e82 JB |
242 | dev_kfree_skb(skb); |
243 | break; | |
244 | } | |
245 | } | |
246 | } | |
247 | ||
f2753ddb JB |
248 | static void ieee80211_restart_work(struct work_struct *work) |
249 | { | |
250 | struct ieee80211_local *local = | |
251 | container_of(work, struct ieee80211_local, restart_work); | |
252 | ||
bc86863d SG |
253 | /* wait for scan work complete */ |
254 | flush_workqueue(local->workqueue); | |
255 | ||
d43c6b6e DS |
256 | WARN(test_bit(SCAN_HW_SCANNING, &local->scanning), |
257 | "%s called with hardware scan in progress\n", __func__); | |
bc86863d | 258 | |
f2753ddb | 259 | rtnl_lock(); |
4136c422 | 260 | ieee80211_scan_cancel(local); |
f2753ddb JB |
261 | ieee80211_reconfig(local); |
262 | rtnl_unlock(); | |
263 | } | |
264 | ||
265 | void ieee80211_restart_hw(struct ieee80211_hw *hw) | |
266 | { | |
267 | struct ieee80211_local *local = hw_to_local(hw); | |
268 | ||
b5878a2d JB |
269 | trace_api_restart_hw(local); |
270 | ||
b196d031 MB |
271 | wiphy_info(hw->wiphy, |
272 | "Hardware restart was requested\n"); | |
273 | ||
18145c69 | 274 | /* use this reason, ieee80211_reconfig will unblock it */ |
445ea4e8 | 275 | ieee80211_stop_queues_by_reason(hw, IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
276 | IEEE80211_QUEUE_STOP_REASON_SUSPEND, |
277 | false); | |
f2753ddb | 278 | |
04800ada AN |
279 | /* |
280 | * Stop all Rx during the reconfig. We don't want state changes | |
281 | * or driver callbacks while this is in progress. | |
282 | */ | |
283 | local->in_reconfig = true; | |
284 | barrier(); | |
285 | ||
f2753ddb JB |
286 | schedule_work(&local->restart_work); |
287 | } | |
288 | EXPORT_SYMBOL(ieee80211_restart_hw); | |
289 | ||
26b36cfe | 290 | #ifdef CONFIG_INET |
2b2c009e JO |
291 | static int ieee80211_ifa_changed(struct notifier_block *nb, |
292 | unsigned long data, void *arg) | |
293 | { | |
294 | struct in_ifaddr *ifa = arg; | |
295 | struct ieee80211_local *local = | |
296 | container_of(nb, struct ieee80211_local, | |
297 | ifa_notifier); | |
298 | struct net_device *ndev = ifa->ifa_dev->dev; | |
299 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
68542962 | 300 | struct in_device *idev; |
2b2c009e | 301 | struct ieee80211_sub_if_data *sdata; |
68542962 | 302 | struct ieee80211_bss_conf *bss_conf; |
2b2c009e | 303 | struct ieee80211_if_managed *ifmgd; |
68542962 | 304 | int c = 0; |
2b2c009e JO |
305 | |
306 | /* Make sure it's our interface that got changed */ | |
307 | if (!wdev) | |
308 | return NOTIFY_DONE; | |
309 | ||
310 | if (wdev->wiphy != local->hw.wiphy) | |
311 | return NOTIFY_DONE; | |
312 | ||
2b2c009e | 313 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); |
68542962 | 314 | bss_conf = &sdata->vif.bss_conf; |
2b2c009e JO |
315 | |
316 | /* ARP filtering is only supported in managed mode */ | |
317 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
318 | return NOTIFY_DONE; | |
319 | ||
95ae6b22 | 320 | idev = __in_dev_get_rtnl(sdata->dev); |
68542962 JO |
321 | if (!idev) |
322 | return NOTIFY_DONE; | |
323 | ||
2b2c009e | 324 | ifmgd = &sdata->u.mgd; |
8d61ffa5 | 325 | sdata_lock(sdata); |
68542962 JO |
326 | |
327 | /* Copy the addresses to the bss_conf list */ | |
328 | ifa = idev->ifa_list; | |
0f19b41e JB |
329 | while (ifa) { |
330 | if (c < IEEE80211_BSS_ARP_ADDR_LIST_LEN) | |
331 | bss_conf->arp_addr_list[c] = ifa->ifa_address; | |
68542962 JO |
332 | ifa = ifa->ifa_next; |
333 | c++; | |
334 | } | |
335 | ||
68542962 JO |
336 | bss_conf->arp_addr_cnt = c; |
337 | ||
53d69c39 | 338 | /* Configure driver only if associated (which also implies it is up) */ |
0f19b41e | 339 | if (ifmgd->associated) |
68542962 JO |
340 | ieee80211_bss_info_change_notify(sdata, |
341 | BSS_CHANGED_ARP_FILTER); | |
68542962 | 342 | |
8d61ffa5 | 343 | sdata_unlock(sdata); |
2b2c009e | 344 | |
8bd811aa | 345 | return NOTIFY_OK; |
2b2c009e | 346 | } |
26b36cfe | 347 | #endif |
2b2c009e | 348 | |
a65240c1 JB |
349 | #if IS_ENABLED(CONFIG_IPV6) |
350 | static int ieee80211_ifa6_changed(struct notifier_block *nb, | |
351 | unsigned long data, void *arg) | |
352 | { | |
353 | struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)arg; | |
354 | struct inet6_dev *idev = ifa->idev; | |
355 | struct net_device *ndev = ifa->idev->dev; | |
356 | struct ieee80211_local *local = | |
357 | container_of(nb, struct ieee80211_local, ifa6_notifier); | |
358 | struct wireless_dev *wdev = ndev->ieee80211_ptr; | |
359 | struct ieee80211_sub_if_data *sdata; | |
360 | ||
361 | /* Make sure it's our interface that got changed */ | |
362 | if (!wdev || wdev->wiphy != local->hw.wiphy) | |
363 | return NOTIFY_DONE; | |
364 | ||
365 | sdata = IEEE80211_DEV_TO_SUB_IF(ndev); | |
366 | ||
367 | /* | |
368 | * For now only support station mode. This is mostly because | |
369 | * doing AP would have to handle AP_VLAN in some way ... | |
370 | */ | |
371 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
372 | return NOTIFY_DONE; | |
373 | ||
374 | drv_ipv6_addr_change(local, sdata, idev); | |
375 | ||
8bd811aa | 376 | return NOTIFY_OK; |
a65240c1 JB |
377 | } |
378 | #endif | |
379 | ||
2e161f78 JB |
380 | /* There isn't a lot of sense in it, but you can transmit anything you like */ |
381 | static const struct ieee80211_txrx_stypes | |
382 | ieee80211_default_mgmt_stypes[NUM_NL80211_IFTYPES] = { | |
383 | [NL80211_IFTYPE_ADHOC] = { | |
384 | .tx = 0xffff, | |
3bfda62c WH |
385 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
386 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
41e31b8b AQ |
387 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | |
388 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
2e161f78 JB |
389 | }, |
390 | [NL80211_IFTYPE_STATION] = { | |
391 | .tx = 0xffff, | |
392 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
393 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
394 | }, | |
395 | [NL80211_IFTYPE_AP] = { | |
396 | .tx = 0xffff, | |
397 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
398 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
399 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
400 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
401 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
402 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
403 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
404 | }, | |
405 | [NL80211_IFTYPE_AP_VLAN] = { | |
406 | /* copy AP */ | |
407 | .tx = 0xffff, | |
408 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
409 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
410 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
411 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | | |
412 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
413 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
2ca27bcf JB |
414 | BIT(IEEE80211_STYPE_ACTION >> 4), |
415 | }, | |
416 | [NL80211_IFTYPE_P2P_CLIENT] = { | |
417 | .tx = 0xffff, | |
418 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
419 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
420 | }, | |
421 | [NL80211_IFTYPE_P2P_GO] = { | |
422 | .tx = 0xffff, | |
423 | .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | | |
424 | BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | | |
425 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | | |
2e161f78 JB |
426 | BIT(IEEE80211_STYPE_DISASSOC >> 4) | |
427 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
428 | BIT(IEEE80211_STYPE_DEAUTH >> 4) | | |
429 | BIT(IEEE80211_STYPE_ACTION >> 4), | |
430 | }, | |
c7108a71 JC |
431 | [NL80211_IFTYPE_MESH_POINT] = { |
432 | .tx = 0xffff, | |
71839121 JC |
433 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | |
434 | BIT(IEEE80211_STYPE_AUTH >> 4) | | |
435 | BIT(IEEE80211_STYPE_DEAUTH >> 4), | |
c7108a71 | 436 | }, |
f142c6b9 JB |
437 | [NL80211_IFTYPE_P2P_DEVICE] = { |
438 | .tx = 0xffff, | |
439 | .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | | |
440 | BIT(IEEE80211_STYPE_PROBE_REQ >> 4), | |
441 | }, | |
2e161f78 JB |
442 | }; |
443 | ||
ef96a842 BG |
444 | static const struct ieee80211_ht_cap mac80211_ht_capa_mod_mask = { |
445 | .ampdu_params_info = IEEE80211_HT_AMPDU_PARM_FACTOR | | |
446 | IEEE80211_HT_AMPDU_PARM_DENSITY, | |
447 | ||
448 | .cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
449 | IEEE80211_HT_CAP_MAX_AMSDU | | |
bc0784d9 | 450 | IEEE80211_HT_CAP_SGI_20 | |
a2e7495d | 451 | IEEE80211_HT_CAP_SGI_40 | |
9a07bf50 JM |
452 | IEEE80211_HT_CAP_LDPC_CODING | |
453 | IEEE80211_HT_CAP_40MHZ_INTOLERANT), | |
ef96a842 BG |
454 | .mcs = { |
455 | .rx_mask = { 0xff, 0xff, 0xff, 0xff, 0xff, | |
456 | 0xff, 0xff, 0xff, 0xff, 0xff, }, | |
457 | }, | |
458 | }; | |
459 | ||
dd5ecfea JB |
460 | static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = { |
461 | .vht_cap_info = | |
462 | cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC | | |
463 | IEEE80211_VHT_CAP_SHORT_GI_80 | | |
464 | IEEE80211_VHT_CAP_SHORT_GI_160 | | |
465 | IEEE80211_VHT_CAP_RXSTBC_1 | | |
466 | IEEE80211_VHT_CAP_RXSTBC_2 | | |
467 | IEEE80211_VHT_CAP_RXSTBC_3 | | |
468 | IEEE80211_VHT_CAP_RXSTBC_4 | | |
469 | IEEE80211_VHT_CAP_TXSTBC | | |
470 | IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE | | |
471 | IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | | |
472 | IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | | |
473 | IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN | | |
474 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK), | |
475 | .supp_mcs = { | |
476 | .rx_mcs_map = cpu_to_le16(~0), | |
477 | .tx_mcs_map = cpu_to_le16(~0), | |
478 | }, | |
479 | }; | |
480 | ||
f0706e82 JB |
481 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
482 | const struct ieee80211_ops *ops) | |
483 | { | |
f0706e82 | 484 | struct ieee80211_local *local; |
96f5e66e | 485 | int priv_size, i; |
f0706e82 | 486 | struct wiphy *wiphy; |
fe57d9f5 | 487 | bool use_chanctx; |
f0706e82 | 488 | |
c0af0734 JB |
489 | if (WARN_ON(!ops->tx || !ops->start || !ops->stop || !ops->config || |
490 | !ops->add_interface || !ops->remove_interface || | |
491 | !ops->configure_filter)) | |
492 | return NULL; | |
493 | ||
f09603a2 JB |
494 | if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) |
495 | return NULL; | |
496 | ||
e269d860 JB |
497 | /* check all or no channel context operations exist */ |
498 | i = !!ops->add_chanctx + !!ops->remove_chanctx + | |
499 | !!ops->change_chanctx + !!ops->assign_vif_chanctx + | |
500 | !!ops->unassign_vif_chanctx; | |
501 | if (WARN_ON(i != 0 && i != 5)) | |
502 | return NULL; | |
fe57d9f5 | 503 | use_chanctx = i == 5; |
e269d860 | 504 | |
f0706e82 JB |
505 | /* Ensure 32-byte alignment of our private data and hw private data. |
506 | * We use the wiphy priv data for both our ieee80211_local and for | |
507 | * the driver's private data | |
508 | * | |
509 | * In memory it'll be like this: | |
510 | * | |
511 | * +-------------------------+ | |
512 | * | struct wiphy | | |
513 | * +-------------------------+ | |
514 | * | struct ieee80211_local | | |
515 | * +-------------------------+ | |
516 | * | driver's private data | | |
517 | * +-------------------------+ | |
518 | * | |
519 | */ | |
1ce8e7b5 | 520 | priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len; |
f0706e82 JB |
521 | |
522 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
523 | ||
524 | if (!wiphy) | |
525 | return NULL; | |
526 | ||
2e161f78 JB |
527 | wiphy->mgmt_stypes = ieee80211_default_mgmt_stypes; |
528 | ||
207aba60 JB |
529 | wiphy->privid = mac80211_wiphy_privid; |
530 | ||
9bc383de JB |
531 | wiphy->flags |= WIPHY_FLAG_NETNS_OK | |
532 | WIPHY_FLAG_4ADDR_AP | | |
ee971924 | 533 | WIPHY_FLAG_4ADDR_STATION | |
7c4ef712 | 534 | WIPHY_FLAG_REPORTS_OBSS | |
81ddbb5c JB |
535 | WIPHY_FLAG_OFFCHAN_TX; |
536 | ||
537 | if (ops->remain_on_channel) | |
538 | wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; | |
207aba60 | 539 | |
b292219f JB |
540 | wiphy->features |= NL80211_FEATURE_SK_TX_STATUS | |
541 | NL80211_FEATURE_SAE | | |
1ea6f9c0 | 542 | NL80211_FEATURE_HT_IBSS | |
a6dad6a2 TP |
543 | NL80211_FEATURE_VIF_TXPOWER | |
544 | NL80211_FEATURE_USERSPACE_MPM; | |
a729cff8 | 545 | |
cd2bb512 | 546 | if (!ops->hw_scan) |
5c95b940 AQ |
547 | wiphy->features |= NL80211_FEATURE_LOW_PRIORITY_SCAN | |
548 | NL80211_FEATURE_AP_SCAN; | |
549 | ||
cd2bb512 | 550 | |
207aba60 JB |
551 | if (!ops->set_key) |
552 | wiphy->flags |= WIPHY_FLAG_IBSS_RSN; | |
18a83659 | 553 | |
0c1ad2ca | 554 | wiphy->bss_priv_size = sizeof(struct ieee80211_bss); |
f0706e82 JB |
555 | |
556 | local = wiphy_priv(wiphy); | |
de95a54b | 557 | |
f0706e82 JB |
558 | local->hw.wiphy = wiphy; |
559 | ||
1ce8e7b5 | 560 | local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN); |
f0706e82 JB |
561 | |
562 | local->ops = ops; | |
fe57d9f5 | 563 | local->use_chanctx = use_chanctx; |
f0706e82 | 564 | |
e6a9854b JB |
565 | /* set up some defaults */ |
566 | local->hw.queues = 1; | |
567 | local->hw.max_rates = 1; | |
78be49ec | 568 | local->hw.max_report_rates = 0; |
df6ba5d8 | 569 | local->hw.max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
39e68712 | 570 | local->hw.max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF; |
3a25a8c8 | 571 | local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE; |
b9a5f8ca JM |
572 | local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; |
573 | local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; | |
ac55d2fe JB |
574 | local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
575 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
576 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
51648921 JB |
577 | local->hw.radiotap_vht_details = IEEE80211_RADIOTAP_VHT_KNOWN_GI | |
578 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH; | |
219c3867 AB |
579 | local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES; |
580 | local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN; | |
1ea6f9c0 | 581 | local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; |
ef96a842 | 582 | wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask; |
dd5ecfea | 583 | wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask; |
f0706e82 | 584 | |
e9a21949 LC |
585 | local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF; |
586 | ||
587 | wiphy->extended_capabilities = local->ext_capa; | |
588 | wiphy->extended_capabilities_mask = local->ext_capa; | |
589 | wiphy->extended_capabilities_len = | |
590 | ARRAY_SIZE(local->ext_capa); | |
591 | ||
79010420 | 592 | INIT_LIST_HEAD(&local->interfaces); |
2f787b0b YH |
593 | |
594 | __hw_addr_init(&local->mc_list); | |
595 | ||
c771c9d8 | 596 | mutex_init(&local->iflist_mtx); |
a1699b75 | 597 | mutex_init(&local->mtx); |
f0706e82 | 598 | |
ad0e2b5a | 599 | mutex_init(&local->key_mtx); |
3b8d81e0 | 600 | spin_lock_init(&local->filter_lock); |
f9e124fb | 601 | spin_lock_init(&local->rx_path_lock); |
ce7c9111 KV |
602 | spin_lock_init(&local->queue_stop_reason_lock); |
603 | ||
d01a1e65 MK |
604 | INIT_LIST_HEAD(&local->chanctx_list); |
605 | mutex_init(&local->chanctx_mtx); | |
606 | ||
c2b13452 | 607 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work); |
f0706e82 | 608 | |
f2753ddb JB |
609 | INIT_WORK(&local->restart_work, ieee80211_restart_work); |
610 | ||
164eb02d SW |
611 | INIT_WORK(&local->radar_detected_work, |
612 | ieee80211_dfs_radar_detected_work); | |
613 | ||
3ac64bee | 614 | INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); |
0f78231b | 615 | local->smps_mode = IEEE80211_SMPS_OFF; |
3ac64bee | 616 | |
520eb820 KV |
617 | INIT_WORK(&local->dynamic_ps_enable_work, |
618 | ieee80211_dynamic_ps_enable_work); | |
619 | INIT_WORK(&local->dynamic_ps_disable_work, | |
620 | ieee80211_dynamic_ps_disable_work); | |
621 | setup_timer(&local->dynamic_ps_timer, | |
622 | ieee80211_dynamic_ps_timer, (unsigned long) local); | |
623 | ||
85a9994a LC |
624 | INIT_WORK(&local->sched_scan_stopped_work, |
625 | ieee80211_sched_scan_stopped_work); | |
626 | ||
a729cff8 JB |
627 | spin_lock_init(&local->ack_status_lock); |
628 | idr_init(&local->ack_status_frames); | |
a729cff8 | 629 | |
f0706e82 JB |
630 | sta_info_init(local); |
631 | ||
a6a67db2 | 632 | for (i = 0; i < IEEE80211_MAX_QUEUES; i++) { |
2a577d98 | 633 | skb_queue_head_init(&local->pending[i]); |
a6a67db2 JB |
634 | atomic_set(&local->agg_queue_stop[i], 0); |
635 | } | |
f0706e82 JB |
636 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, |
637 | (unsigned long)local); | |
f0706e82 JB |
638 | |
639 | tasklet_init(&local->tasklet, | |
640 | ieee80211_tasklet_handler, | |
641 | (unsigned long) local); | |
f0706e82 JB |
642 | |
643 | skb_queue_head_init(&local->skb_queue); | |
644 | skb_queue_head_init(&local->skb_queue_unreliable); | |
645 | ||
fe67c913 JB |
646 | ieee80211_led_names(local); |
647 | ||
2eb278e0 | 648 | ieee80211_roc_setup(local); |
21f83589 | 649 | |
005e472b | 650 | return &local->hw; |
f0706e82 JB |
651 | } |
652 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
653 | ||
2475b1cc | 654 | static int ieee80211_init_cipher_suites(struct ieee80211_local *local) |
f0706e82 | 655 | { |
2475b1cc MS |
656 | bool have_wep = !(IS_ERR(local->wep_tx_tfm) || |
657 | IS_ERR(local->wep_rx_tfm)); | |
658 | bool have_mfp = local->hw.flags & IEEE80211_HW_MFP_CAPABLE; | |
659 | const struct ieee80211_cipher_scheme *cs = local->hw.cipher_schemes; | |
660 | int n_suites = 0, r = 0, w = 0; | |
661 | u32 *suites; | |
25e47c18 | 662 | static const u32 cipher_suites[] = { |
5daa8a8e | 663 | /* keep WEP first, it may be removed below */ |
25e47c18 JB |
664 | WLAN_CIPHER_SUITE_WEP40, |
665 | WLAN_CIPHER_SUITE_WEP104, | |
666 | WLAN_CIPHER_SUITE_TKIP, | |
667 | WLAN_CIPHER_SUITE_CCMP, | |
668 | ||
669 | /* keep last -- depends on hw flags! */ | |
670 | WLAN_CIPHER_SUITE_AES_CMAC | |
671 | }; | |
8318d78a | 672 | |
2475b1cc MS |
673 | /* Driver specifies the ciphers, we have nothing to do... */ |
674 | if (local->hw.wiphy->cipher_suites && have_wep) | |
675 | return 0; | |
676 | ||
677 | /* Set up cipher suites if driver relies on mac80211 cipher defs */ | |
678 | if (!local->hw.wiphy->cipher_suites && !cs) { | |
679 | local->hw.wiphy->cipher_suites = cipher_suites; | |
680 | local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); | |
681 | ||
682 | if (!have_mfp) | |
683 | local->hw.wiphy->n_cipher_suites--; | |
684 | ||
685 | if (!have_wep) { | |
686 | local->hw.wiphy->cipher_suites += 2; | |
687 | local->hw.wiphy->n_cipher_suites -= 2; | |
688 | } | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | if (!local->hw.wiphy->cipher_suites) { | |
694 | /* | |
695 | * Driver specifies cipher schemes only | |
696 | * We start counting ciphers defined by schemes, TKIP and CCMP | |
697 | */ | |
698 | n_suites = local->hw.n_cipher_schemes + 2; | |
699 | ||
700 | /* check if we have WEP40 and WEP104 */ | |
701 | if (have_wep) | |
702 | n_suites += 2; | |
703 | ||
704 | /* check if we have AES_CMAC */ | |
705 | if (have_mfp) | |
706 | n_suites++; | |
707 | ||
708 | suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL); | |
709 | if (!suites) | |
710 | return -ENOMEM; | |
711 | ||
712 | suites[w++] = WLAN_CIPHER_SUITE_CCMP; | |
713 | suites[w++] = WLAN_CIPHER_SUITE_TKIP; | |
714 | ||
715 | if (have_wep) { | |
716 | suites[w++] = WLAN_CIPHER_SUITE_WEP40; | |
717 | suites[w++] = WLAN_CIPHER_SUITE_WEP104; | |
718 | } | |
719 | ||
720 | if (have_mfp) | |
721 | suites[w++] = WLAN_CIPHER_SUITE_AES_CMAC; | |
722 | ||
723 | for (r = 0; r < local->hw.n_cipher_schemes; r++) | |
724 | suites[w++] = cs[r].cipher; | |
725 | } else { | |
726 | /* Driver provides cipher suites, but we need to exclude WEP */ | |
727 | suites = kmemdup(local->hw.wiphy->cipher_suites, | |
728 | sizeof(u32) * local->hw.wiphy->n_cipher_suites, | |
729 | GFP_KERNEL); | |
730 | if (!suites) | |
731 | return -ENOMEM; | |
732 | ||
733 | for (r = 0; r < local->hw.wiphy->n_cipher_suites; r++) { | |
734 | u32 suite = local->hw.wiphy->cipher_suites[r]; | |
735 | ||
736 | if (suite == WLAN_CIPHER_SUITE_WEP40 || | |
737 | suite == WLAN_CIPHER_SUITE_WEP104) | |
738 | continue; | |
739 | suites[w++] = suite; | |
740 | } | |
741 | } | |
742 | ||
743 | local->hw.wiphy->cipher_suites = suites; | |
744 | local->hw.wiphy->n_cipher_suites = w; | |
745 | local->wiphy_ciphers_allocated = true; | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
751 | { | |
752 | struct ieee80211_local *local = hw_to_local(hw); | |
753 | int result, i; | |
754 | enum ieee80211_band band; | |
755 | int channels, max_bitrates; | |
756 | bool supp_ht, supp_vht; | |
757 | netdev_features_t feature_whitelist; | |
758 | struct cfg80211_chan_def dflt_chandef = {}; | |
759 | ||
3a25a8c8 JB |
760 | if (hw->flags & IEEE80211_HW_QUEUE_CONTROL && |
761 | (local->hw.offchannel_tx_hw_queue == IEEE80211_INVAL_HW_QUEUE || | |
762 | local->hw.offchannel_tx_hw_queue >= local->hw.queues)) | |
763 | return -EINVAL; | |
764 | ||
38bb3e9d | 765 | #ifdef CONFIG_PM |
964dc9e2 | 766 | if (hw->wiphy->wowlan && (!local->ops->suspend || !local->ops->resume)) |
eecc4800 | 767 | return -EINVAL; |
dfb89c56 | 768 | #endif |
eecc4800 | 769 | |
fe57d9f5 JB |
770 | if (!local->use_chanctx) { |
771 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
772 | const struct ieee80211_iface_combination *comb; | |
773 | ||
774 | comb = &local->hw.wiphy->iface_combinations[i]; | |
775 | ||
776 | if (comb->num_different_channels > 1) | |
777 | return -EINVAL; | |
778 | } | |
746a3365 | 779 | } else { |
fe57d9f5 JB |
780 | /* |
781 | * WDS is currently prohibited when channel contexts are used | |
782 | * because there's no clear definition of which channel WDS | |
783 | * type interfaces use | |
784 | */ | |
785 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)) | |
786 | return -EINVAL; | |
164eb02d SW |
787 | |
788 | /* DFS currently not supported with channel context drivers */ | |
789 | for (i = 0; i < local->hw.wiphy->n_iface_combinations; i++) { | |
790 | const struct ieee80211_iface_combination *comb; | |
791 | ||
792 | comb = &local->hw.wiphy->iface_combinations[i]; | |
793 | ||
794 | if (comb->radar_detect_widths) | |
795 | return -EINVAL; | |
796 | } | |
fe57d9f5 JB |
797 | } |
798 | ||
72d78728 AN |
799 | /* Only HW csum features are currently compatible with mac80211 */ |
800 | feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | | |
801 | NETIF_F_HW_CSUM; | |
802 | if (WARN_ON(hw->netdev_features & ~feature_whitelist)) | |
803 | return -EINVAL; | |
804 | ||
78be49ec HS |
805 | if (hw->max_report_rates == 0) |
806 | hw->max_report_rates = hw->max_rates; | |
807 | ||
04ecd257 JB |
808 | local->rx_chains = 1; |
809 | ||
8318d78a JB |
810 | /* |
811 | * generic code guarantees at least one band, | |
812 | * set this very early because much code assumes | |
813 | * that hw.conf.channel is assigned | |
814 | */ | |
2a519311 | 815 | channels = 0; |
de95a54b | 816 | max_bitrates = 0; |
5ef2d41a | 817 | supp_ht = false; |
ba0afa2f | 818 | supp_vht = false; |
8318d78a JB |
819 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
820 | struct ieee80211_supported_band *sband; | |
821 | ||
822 | sband = local->hw.wiphy->bands[band]; | |
de95a54b JB |
823 | if (!sband) |
824 | continue; | |
fffa4b1c KB |
825 | |
826 | if (!dflt_chandef.chan) { | |
827 | cfg80211_chandef_create(&dflt_chandef, | |
828 | &sband->channels[0], | |
829 | NL80211_CHAN_NO_HT); | |
8318d78a | 830 | /* init channel we're on */ |
fffa4b1c KB |
831 | if (!local->use_chanctx && !local->_oper_chandef.chan) { |
832 | local->hw.conf.chandef = dflt_chandef; | |
833 | local->_oper_chandef = dflt_chandef; | |
834 | } | |
835 | local->monitor_chandef = dflt_chandef; | |
8318d78a | 836 | } |
fffa4b1c | 837 | |
de95a54b JB |
838 | channels += sband->n_channels; |
839 | ||
840 | if (max_bitrates < sband->n_bitrates) | |
841 | max_bitrates = sband->n_bitrates; | |
5ef2d41a | 842 | supp_ht = supp_ht || sband->ht_cap.ht_supported; |
ba0afa2f | 843 | supp_vht = supp_vht || sband->vht_cap.vht_supported; |
04ecd257 JB |
844 | |
845 | if (sband->ht_cap.ht_supported) | |
846 | local->rx_chains = | |
847 | max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), | |
848 | local->rx_chains); | |
849 | ||
850 | /* TODO: consider VHT for RX chains, hopefully it's the same */ | |
8318d78a | 851 | } |
f0706e82 | 852 | |
f59ac048 | 853 | /* if low-level driver supports AP, we also support VLAN */ |
7527a782 JB |
854 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
855 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
856 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_AP_VLAN); | |
857 | } | |
f59ac048 LR |
858 | |
859 | /* mac80211 always supports monitor */ | |
7527a782 JB |
860 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); |
861 | hw->wiphy->software_iftypes |= BIT(NL80211_IFTYPE_MONITOR); | |
862 | ||
55de908a | 863 | /* mac80211 doesn't support more than one IBSS interface right now */ |
8e621fc9 JB |
864 | for (i = 0; i < hw->wiphy->n_iface_combinations; i++) { |
865 | const struct ieee80211_iface_combination *c; | |
866 | int j; | |
867 | ||
868 | c = &hw->wiphy->iface_combinations[i]; | |
869 | ||
8e621fc9 JB |
870 | for (j = 0; j < c->n_limits; j++) |
871 | if ((c->limits[j].types & BIT(NL80211_IFTYPE_ADHOC)) && | |
872 | c->limits[j].max > 1) | |
873 | return -EINVAL; | |
874 | } | |
875 | ||
5b0ec94f JB |
876 | local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + |
877 | sizeof(void *) * channels, GFP_KERNEL); | |
878 | if (!local->int_scan_req) | |
879 | return -ENOMEM; | |
880 | ||
881 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
882 | if (!local->hw.wiphy->bands[band]) | |
883 | continue; | |
884 | local->int_scan_req->rates[band] = (u32) -1; | |
885 | } | |
886 | ||
5eb5a52d JB |
887 | #ifndef CONFIG_MAC80211_MESH |
888 | /* mesh depends on Kconfig, but drivers should set it if they want */ | |
889 | local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); | |
890 | #endif | |
891 | ||
1570ca59 JC |
892 | /* if the underlying driver supports mesh, mac80211 will (at least) |
893 | * provide routing of mesh authentication frames to userspace */ | |
894 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_MESH_POINT)) | |
895 | local->hw.wiphy->flags |= WIPHY_FLAG_MESH_AUTH; | |
896 | ||
a621fa4d JB |
897 | /* mac80211 supports control port protocol changing */ |
898 | local->hw.wiphy->flags |= WIPHY_FLAG_CONTROL_PORT_PROTOCOL; | |
899 | ||
52512072 | 900 | if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { |
77965c97 | 901 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; |
52512072 | 902 | } else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) { |
77965c97 | 903 | local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC; |
52512072 | 904 | if (hw->max_signal <= 0) { |
905 | result = -EINVAL; | |
906 | goto fail_wiphy_register; | |
907 | } | |
908 | } | |
77965c97 | 909 | |
ab13315a KV |
910 | WARN((local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) |
911 | && (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK), | |
912 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"); | |
913 | ||
de95a54b JB |
914 | /* |
915 | * Calculate scan IE length -- we need this to alloc | |
916 | * memory and to subtract from the driver limit. It | |
dc9f48ce | 917 | * includes the DS Params, (extended) supported rates, and HT |
de95a54b JB |
918 | * information -- SSID is the driver's responsibility. |
919 | */ | |
dc9f48ce JM |
920 | local->scan_ies_len = 4 + max_bitrates /* (ext) supp rates */ + |
921 | 3 /* DS Params */; | |
5ef2d41a JB |
922 | if (supp_ht) |
923 | local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap); | |
de95a54b | 924 | |
d0e6c21a | 925 | if (supp_vht) |
ba0afa2f | 926 | local->scan_ies_len += |
d4950281 | 927 | 2 + sizeof(struct ieee80211_vht_cap); |
ba0afa2f | 928 | |
de95a54b JB |
929 | if (!local->ops->hw_scan) { |
930 | /* For hw_scan, driver needs to set these up. */ | |
931 | local->hw.wiphy->max_scan_ssids = 4; | |
932 | local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; | |
933 | } | |
934 | ||
935 | /* | |
936 | * If the driver supports any scan IEs, then assume the | |
937 | * limit includes the IEs mac80211 will add, otherwise | |
938 | * leave it at zero and let the driver sort it out; we | |
939 | * still pass our IEs to the driver but userspace will | |
940 | * not be allowed to in that case. | |
941 | */ | |
942 | if (local->hw.wiphy->max_scan_ie_len) | |
943 | local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len; | |
944 | ||
2475b1cc MS |
945 | WARN_ON(!ieee80211_cs_list_valid(local->hw.cipher_schemes, |
946 | local->hw.n_cipher_schemes)); | |
947 | ||
948 | result = ieee80211_init_cipher_suites(local); | |
949 | if (result < 0) | |
950 | goto fail_wiphy_register; | |
25e47c18 | 951 | |
21f83589 JB |
952 | if (!local->ops->remain_on_channel) |
953 | local->hw.wiphy->max_remain_on_channel_duration = 5000; | |
a293911d | 954 | |
dfe018bf AN |
955 | /* mac80211 based drivers don't support internal TDLS setup */ |
956 | if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS) | |
957 | local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP; | |
958 | ||
e9a21949 LC |
959 | /* mac80211 supports eCSA, if the driver supports STA CSA at all */ |
960 | if (local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA) | |
961 | local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING; | |
962 | ||
0d06d9ba AO |
963 | local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM; |
964 | ||
f0706e82 JB |
965 | result = wiphy_register(local->hw.wiphy); |
966 | if (result < 0) | |
2a519311 | 967 | goto fail_wiphy_register; |
f0706e82 | 968 | |
e2530083 JB |
969 | /* |
970 | * We use the number of queues for feature tests (QoS, HT) internally | |
971 | * so restrict them appropriately. | |
972 | */ | |
e2530083 JB |
973 | if (hw->queues > IEEE80211_MAX_QUEUES) |
974 | hw->queues = IEEE80211_MAX_QUEUES; | |
e2530083 | 975 | |
42935eca | 976 | local->workqueue = |
d8537548 | 977 | alloc_ordered_workqueue("%s", 0, wiphy_name(local->hw.wiphy)); |
42935eca | 978 | if (!local->workqueue) { |
f0706e82 JB |
979 | result = -ENOMEM; |
980 | goto fail_workqueue; | |
981 | } | |
982 | ||
b306f453 JB |
983 | /* |
984 | * The hardware needs headroom for sending the frame, | |
985 | * and we need some headroom for passing the frame to monitor | |
986 | * interfaces, but never both at the same time. | |
987 | */ | |
33ccad35 | 988 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
a2fe8166 | 989 | IEEE80211_TX_STATUS_HEADROOM); |
b306f453 | 990 | |
e9f207f0 JB |
991 | debugfs_hw_add(local); |
992 | ||
b446918b HS |
993 | /* |
994 | * if the driver doesn't specify a max listen interval we | |
995 | * use 5 which should be a safe default | |
996 | */ | |
ea95bba4 | 997 | if (local->hw.max_listen_interval == 0) |
b446918b | 998 | local->hw.max_listen_interval = 5; |
ea95bba4 TW |
999 | |
1000 | local->hw.conf.listen_interval = local->hw.max_listen_interval; | |
1001 | ||
ff616381 | 1002 | local->dynamic_ps_forced_timeout = -1; |
195e294d | 1003 | |
d4c4a9a1 | 1004 | result = ieee80211_wep_init(local); |
3473187d | 1005 | if (result < 0) |
0fb9a9ec JP |
1006 | wiphy_debug(local->hw.wiphy, "Failed to initialize wep: %d\n", |
1007 | result); | |
d4c4a9a1 | 1008 | |
24d47300 KB |
1009 | local->hw.conf.flags = IEEE80211_CONF_IDLE; |
1010 | ||
b57e6b56 MSS |
1011 | ieee80211_led_init(local); |
1012 | ||
f0706e82 | 1013 | rtnl_lock(); |
f0706e82 | 1014 | |
830f9038 JB |
1015 | result = ieee80211_init_rate_ctrl_alg(local, |
1016 | hw->rate_control_algorithm); | |
f0706e82 | 1017 | if (result < 0) { |
0fb9a9ec JP |
1018 | wiphy_debug(local->hw.wiphy, |
1019 | "Failed to initialize rate control algorithm\n"); | |
f0706e82 JB |
1020 | goto fail_rate; |
1021 | } | |
1022 | ||
8dffff21 JB |
1023 | /* add one default STA interface if supported */ |
1024 | if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION)) { | |
1025 | result = ieee80211_if_add(local, "wlan%d", NULL, | |
1026 | NL80211_IFTYPE_STATION, NULL); | |
1027 | if (result) | |
0fb9a9ec JP |
1028 | wiphy_warn(local->hw.wiphy, |
1029 | "Failed to add default virtual iface\n"); | |
8dffff21 | 1030 | } |
f0706e82 | 1031 | |
f0706e82 JB |
1032 | rtnl_unlock(); |
1033 | ||
10f644a4 JB |
1034 | local->network_latency_notifier.notifier_call = |
1035 | ieee80211_max_network_latency; | |
1036 | result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY, | |
1037 | &local->network_latency_notifier); | |
10f644a4 JB |
1038 | if (result) { |
1039 | rtnl_lock(); | |
1040 | goto fail_pm_qos; | |
1041 | } | |
1042 | ||
26b36cfe | 1043 | #ifdef CONFIG_INET |
2b2c009e JO |
1044 | local->ifa_notifier.notifier_call = ieee80211_ifa_changed; |
1045 | result = register_inetaddr_notifier(&local->ifa_notifier); | |
1046 | if (result) | |
1047 | goto fail_ifa; | |
26b36cfe | 1048 | #endif |
2b2c009e | 1049 | |
a65240c1 JB |
1050 | #if IS_ENABLED(CONFIG_IPV6) |
1051 | local->ifa6_notifier.notifier_call = ieee80211_ifa6_changed; | |
1052 | result = register_inet6addr_notifier(&local->ifa6_notifier); | |
1053 | if (result) | |
1054 | goto fail_ifa6; | |
1055 | #endif | |
1056 | ||
f0706e82 JB |
1057 | return 0; |
1058 | ||
a65240c1 JB |
1059 | #if IS_ENABLED(CONFIG_IPV6) |
1060 | fail_ifa6: | |
93c08c32 | 1061 | #ifdef CONFIG_INET |
a65240c1 JB |
1062 | unregister_inetaddr_notifier(&local->ifa_notifier); |
1063 | #endif | |
1064 | #endif | |
1065 | #if defined(CONFIG_INET) || defined(CONFIG_IPV6) | |
2b2c009e JO |
1066 | fail_ifa: |
1067 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, | |
1068 | &local->network_latency_notifier); | |
1069 | rtnl_lock(); | |
93c08c32 | 1070 | #endif |
10f644a4 JB |
1071 | fail_pm_qos: |
1072 | ieee80211_led_exit(local); | |
1073 | ieee80211_remove_interfaces(local); | |
10f644a4 | 1074 | fail_rate: |
f0706e82 | 1075 | rtnl_unlock(); |
d4c4a9a1 | 1076 | ieee80211_wep_free(local); |
f0706e82 | 1077 | sta_info_stop(local); |
42935eca | 1078 | destroy_workqueue(local->workqueue); |
10f644a4 | 1079 | fail_workqueue: |
f0706e82 | 1080 | wiphy_unregister(local->hw.wiphy); |
10f644a4 | 1081 | fail_wiphy_register: |
3ffc2a90 JB |
1082 | if (local->wiphy_ciphers_allocated) |
1083 | kfree(local->hw.wiphy->cipher_suites); | |
11ba964d | 1084 | kfree(local->int_scan_req); |
f0706e82 JB |
1085 | return result; |
1086 | } | |
1087 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1088 | ||
06d181a8 JB |
1089 | void ieee80211_napi_add(struct ieee80211_hw *hw, struct napi_struct *napi, |
1090 | struct net_device *napi_dev, | |
1091 | int (*poll)(struct napi_struct *, int), | |
1092 | int weight) | |
1093 | { | |
1094 | struct ieee80211_local *local = hw_to_local(hw); | |
1095 | ||
1096 | netif_napi_add(napi_dev, napi, poll, weight); | |
1097 | local->napi = napi; | |
1098 | } | |
1099 | EXPORT_SYMBOL_GPL(ieee80211_napi_add); | |
1100 | ||
f0706e82 JB |
1101 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) |
1102 | { | |
1103 | struct ieee80211_local *local = hw_to_local(hw); | |
f0706e82 JB |
1104 | |
1105 | tasklet_kill(&local->tx_pending_tasklet); | |
1106 | tasklet_kill(&local->tasklet); | |
1107 | ||
10f644a4 JB |
1108 | pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY, |
1109 | &local->network_latency_notifier); | |
26b36cfe | 1110 | #ifdef CONFIG_INET |
2b2c009e | 1111 | unregister_inetaddr_notifier(&local->ifa_notifier); |
26b36cfe | 1112 | #endif |
a65240c1 JB |
1113 | #if IS_ENABLED(CONFIG_IPV6) |
1114 | unregister_inet6addr_notifier(&local->ifa6_notifier); | |
1115 | #endif | |
10f644a4 | 1116 | |
f0706e82 JB |
1117 | rtnl_lock(); |
1118 | ||
79010420 JB |
1119 | /* |
1120 | * At this point, interface list manipulations are fine | |
1121 | * because the driver cannot be handing us frames any | |
1122 | * more and the tasklet is killed. | |
1123 | */ | |
75636525 | 1124 | ieee80211_remove_interfaces(local); |
5b2812e9 | 1125 | |
f0706e82 JB |
1126 | rtnl_unlock(); |
1127 | ||
258086a4 | 1128 | cancel_work_sync(&local->restart_work); |
3ac64bee | 1129 | cancel_work_sync(&local->reconfig_filter); |
18db594a | 1130 | flush_work(&local->sched_scan_stopped_work); |
3ac64bee | 1131 | |
f0706e82 | 1132 | ieee80211_clear_tx_pending(local); |
f0706e82 JB |
1133 | rate_control_deinitialize(local); |
1134 | ||
f64f9e71 JP |
1135 | if (skb_queue_len(&local->skb_queue) || |
1136 | skb_queue_len(&local->skb_queue_unreliable)) | |
0fb9a9ec | 1137 | wiphy_warn(local->hw.wiphy, "skb_queue not empty\n"); |
f0706e82 JB |
1138 | skb_queue_purge(&local->skb_queue); |
1139 | skb_queue_purge(&local->skb_queue_unreliable); | |
1140 | ||
42935eca | 1141 | destroy_workqueue(local->workqueue); |
f0706e82 | 1142 | wiphy_unregister(local->hw.wiphy); |
ecb44335 | 1143 | sta_info_stop(local); |
f0706e82 JB |
1144 | ieee80211_wep_free(local); |
1145 | ieee80211_led_exit(local); | |
5ba63533 | 1146 | kfree(local->int_scan_req); |
f0706e82 JB |
1147 | } |
1148 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1149 | ||
a729cff8 JB |
1150 | static int ieee80211_free_ack_frame(int id, void *p, void *data) |
1151 | { | |
1152 | WARN_ONCE(1, "Have pending ack frames!\n"); | |
1153 | kfree_skb(p); | |
1154 | return 0; | |
1155 | } | |
1156 | ||
f0706e82 JB |
1157 | void ieee80211_free_hw(struct ieee80211_hw *hw) |
1158 | { | |
1159 | struct ieee80211_local *local = hw_to_local(hw); | |
1160 | ||
c771c9d8 | 1161 | mutex_destroy(&local->iflist_mtx); |
a1699b75 | 1162 | mutex_destroy(&local->mtx); |
c771c9d8 | 1163 | |
3ffc2a90 JB |
1164 | if (local->wiphy_ciphers_allocated) |
1165 | kfree(local->hw.wiphy->cipher_suites); | |
1166 | ||
a729cff8 JB |
1167 | idr_for_each(&local->ack_status_frames, |
1168 | ieee80211_free_ack_frame, NULL); | |
1169 | idr_destroy(&local->ack_status_frames); | |
1170 | ||
ad38bfc9 MG |
1171 | kfree(rcu_access_pointer(local->tx_latency)); |
1172 | ||
f0706e82 JB |
1173 | wiphy_free(local->hw.wiphy); |
1174 | } | |
1175 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1176 | ||
f0706e82 JB |
1177 | static int __init ieee80211_init(void) |
1178 | { | |
1179 | struct sk_buff *skb; | |
1180 | int ret; | |
1181 | ||
e039fa4a JB |
1182 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb)); |
1183 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) + | |
c6a1fa12 | 1184 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb)); |
f0706e82 | 1185 | |
cccf129f FF |
1186 | ret = rc80211_minstrel_init(); |
1187 | if (ret) | |
1188 | return ret; | |
1189 | ||
ec8aa669 FF |
1190 | ret = rc80211_minstrel_ht_init(); |
1191 | if (ret) | |
1192 | goto err_minstrel; | |
1193 | ||
47846c9b JB |
1194 | ret = ieee80211_iface_init(); |
1195 | if (ret) | |
1196 | goto err_netdev; | |
e9f207f0 | 1197 | |
f0706e82 | 1198 | return 0; |
47846c9b | 1199 | err_netdev: |
ec8aa669 FF |
1200 | rc80211_minstrel_ht_exit(); |
1201 | err_minstrel: | |
47846c9b JB |
1202 | rc80211_minstrel_exit(); |
1203 | ||
1204 | return ret; | |
f0706e82 JB |
1205 | } |
1206 | ||
f0706e82 JB |
1207 | static void __exit ieee80211_exit(void) |
1208 | { | |
ec8aa669 | 1209 | rc80211_minstrel_ht_exit(); |
cccf129f | 1210 | rc80211_minstrel_exit(); |
ac71c691 | 1211 | |
bf7cd94d | 1212 | ieee80211s_stop(); |
902acc78 | 1213 | |
47846c9b | 1214 | ieee80211_iface_exit(); |
d07c7cf4 JB |
1215 | |
1216 | rcu_barrier(); | |
f0706e82 JB |
1217 | } |
1218 | ||
1219 | ||
ca9938fe | 1220 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1221 | module_exit(ieee80211_exit); |
1222 | ||
1223 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1224 | MODULE_LICENSE("GPL"); |