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cfg80211/nl80211: support GTK rekey offload
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
27 struct genl_info *info);
28 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
29 struct genl_info *info);
30
31 /* the netlink family */
32 static struct genl_family nl80211_fam = {
33 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
34 .name = "nl80211", /* have users key off the name instead */
35 .hdrsize = 0, /* no private header */
36 .version = 1, /* no particular meaning now */
37 .maxattr = NL80211_ATTR_MAX,
38 .netnsok = true,
39 .pre_doit = nl80211_pre_doit,
40 .post_doit = nl80211_post_doit,
41 };
42
43 /* internal helper: get rdev and dev */
44 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
45 struct cfg80211_registered_device **rdev,
46 struct net_device **dev)
47 {
48 struct nlattr **attrs = info->attrs;
49 int ifindex;
50
51 if (!attrs[NL80211_ATTR_IFINDEX])
52 return -EINVAL;
53
54 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
55 *dev = dev_get_by_index(genl_info_net(info), ifindex);
56 if (!*dev)
57 return -ENODEV;
58
59 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
60 if (IS_ERR(*rdev)) {
61 dev_put(*dev);
62 return PTR_ERR(*rdev);
63 }
64
65 return 0;
66 }
67
68 /* policy for the attributes */
69 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
70 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
72 .len = 20-1 },
73 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
74 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
75 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
77 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
78 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
79 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
81
82 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
83 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
84 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
85
86 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
87 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
88
89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
91 .len = WLAN_MAX_KEY_LEN },
92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
97
98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
101 .len = IEEE80211_MAX_DATA_LEN },
102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_DATA_LEN },
104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
108 .len = NL80211_MAX_SUPP_RATES },
109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
113 .len = IEEE80211_MAX_MESH_ID_LEN },
114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
115
116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
118
119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
123 .len = NL80211_MAX_SUPP_RATES },
124 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
125
126 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
127 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
128
129 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
130 .len = NL80211_HT_CAPABILITY_LEN },
131
132 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
133 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
134 .len = IEEE80211_MAX_DATA_LEN },
135 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
136 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
137
138 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
139 .len = IEEE80211_MAX_SSID_LEN },
140 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
141 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
142 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
143 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
144 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
145 [NL80211_ATTR_STA_FLAGS2] = {
146 .len = sizeof(struct nl80211_sta_flag_update),
147 },
148 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
149 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
150 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
151 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
152 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
153 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
154 [NL80211_ATTR_PID] = { .type = NLA_U32 },
155 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
156 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
157 .len = WLAN_PMKID_LEN },
158 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
159 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
160 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
161 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
162 .len = IEEE80211_MAX_DATA_LEN },
163 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
164 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
165 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
166 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
167 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
168 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
169 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
170 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
171 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
172 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
173 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
174 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
175 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
176 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
177 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
178 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
179 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
180 };
181
182 /* policy for the key attributes */
183 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
184 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
185 [NL80211_KEY_IDX] = { .type = NLA_U8 },
186 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
187 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
188 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
189 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
190 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
191 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
192 };
193
194 /* policy for the key default flags */
195 static const struct nla_policy
196 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
197 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
198 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
199 };
200
201 /* policy for WoWLAN attributes */
202 static const struct nla_policy
203 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
204 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
205 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
206 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
207 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
208 };
209
210 /* policy for GTK rekey offload attributes */
211 static const struct nla_policy
212 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
213 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
214 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
215 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
216 };
217
218 /* ifidx get helper */
219 static int nl80211_get_ifidx(struct netlink_callback *cb)
220 {
221 int res;
222
223 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
224 nl80211_fam.attrbuf, nl80211_fam.maxattr,
225 nl80211_policy);
226 if (res)
227 return res;
228
229 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
230 return -EINVAL;
231
232 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
233 if (!res)
234 return -EINVAL;
235 return res;
236 }
237
238 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
239 struct netlink_callback *cb,
240 struct cfg80211_registered_device **rdev,
241 struct net_device **dev)
242 {
243 int ifidx = cb->args[0];
244 int err;
245
246 if (!ifidx)
247 ifidx = nl80211_get_ifidx(cb);
248 if (ifidx < 0)
249 return ifidx;
250
251 cb->args[0] = ifidx;
252
253 rtnl_lock();
254
255 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
256 if (!*dev) {
257 err = -ENODEV;
258 goto out_rtnl;
259 }
260
261 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
262 if (IS_ERR(*rdev)) {
263 err = PTR_ERR(*rdev);
264 goto out_rtnl;
265 }
266
267 return 0;
268 out_rtnl:
269 rtnl_unlock();
270 return err;
271 }
272
273 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
274 {
275 cfg80211_unlock_rdev(rdev);
276 rtnl_unlock();
277 }
278
279 /* IE validation */
280 static bool is_valid_ie_attr(const struct nlattr *attr)
281 {
282 const u8 *pos;
283 int len;
284
285 if (!attr)
286 return true;
287
288 pos = nla_data(attr);
289 len = nla_len(attr);
290
291 while (len) {
292 u8 elemlen;
293
294 if (len < 2)
295 return false;
296 len -= 2;
297
298 elemlen = pos[1];
299 if (elemlen > len)
300 return false;
301
302 len -= elemlen;
303 pos += 2 + elemlen;
304 }
305
306 return true;
307 }
308
309 /* message building helper */
310 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
311 int flags, u8 cmd)
312 {
313 /* since there is no private header just add the generic one */
314 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
315 }
316
317 static int nl80211_msg_put_channel(struct sk_buff *msg,
318 struct ieee80211_channel *chan)
319 {
320 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
321 chan->center_freq);
322
323 if (chan->flags & IEEE80211_CHAN_DISABLED)
324 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
325 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
326 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
327 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
328 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
329 if (chan->flags & IEEE80211_CHAN_RADAR)
330 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
331
332 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
333 DBM_TO_MBM(chan->max_power));
334
335 return 0;
336
337 nla_put_failure:
338 return -ENOBUFS;
339 }
340
341 /* netlink command implementations */
342
343 struct key_parse {
344 struct key_params p;
345 int idx;
346 int type;
347 bool def, defmgmt;
348 bool def_uni, def_multi;
349 };
350
351 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
352 {
353 struct nlattr *tb[NL80211_KEY_MAX + 1];
354 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
355 nl80211_key_policy);
356 if (err)
357 return err;
358
359 k->def = !!tb[NL80211_KEY_DEFAULT];
360 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
361
362 if (k->def) {
363 k->def_uni = true;
364 k->def_multi = true;
365 }
366 if (k->defmgmt)
367 k->def_multi = true;
368
369 if (tb[NL80211_KEY_IDX])
370 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
371
372 if (tb[NL80211_KEY_DATA]) {
373 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
374 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
375 }
376
377 if (tb[NL80211_KEY_SEQ]) {
378 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
379 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
380 }
381
382 if (tb[NL80211_KEY_CIPHER])
383 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
384
385 if (tb[NL80211_KEY_TYPE]) {
386 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
387 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
388 return -EINVAL;
389 }
390
391 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
392 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
393 int err = nla_parse_nested(kdt,
394 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
395 tb[NL80211_KEY_DEFAULT_TYPES],
396 nl80211_key_default_policy);
397 if (err)
398 return err;
399
400 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
401 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
402 }
403
404 return 0;
405 }
406
407 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
408 {
409 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
410 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
411 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
412 }
413
414 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
415 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
416 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
417 }
418
419 if (info->attrs[NL80211_ATTR_KEY_IDX])
420 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
421
422 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
423 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
424
425 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
426 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
427
428 if (k->def) {
429 k->def_uni = true;
430 k->def_multi = true;
431 }
432 if (k->defmgmt)
433 k->def_multi = true;
434
435 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
436 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
437 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
438 return -EINVAL;
439 }
440
441 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
442 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
443 int err = nla_parse_nested(
444 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
445 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
446 nl80211_key_default_policy);
447 if (err)
448 return err;
449
450 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
451 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
452 }
453
454 return 0;
455 }
456
457 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
458 {
459 int err;
460
461 memset(k, 0, sizeof(*k));
462 k->idx = -1;
463 k->type = -1;
464
465 if (info->attrs[NL80211_ATTR_KEY])
466 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
467 else
468 err = nl80211_parse_key_old(info, k);
469
470 if (err)
471 return err;
472
473 if (k->def && k->defmgmt)
474 return -EINVAL;
475
476 if (k->defmgmt) {
477 if (k->def_uni || !k->def_multi)
478 return -EINVAL;
479 }
480
481 if (k->idx != -1) {
482 if (k->defmgmt) {
483 if (k->idx < 4 || k->idx > 5)
484 return -EINVAL;
485 } else if (k->def) {
486 if (k->idx < 0 || k->idx > 3)
487 return -EINVAL;
488 } else {
489 if (k->idx < 0 || k->idx > 5)
490 return -EINVAL;
491 }
492 }
493
494 return 0;
495 }
496
497 static struct cfg80211_cached_keys *
498 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
499 struct nlattr *keys)
500 {
501 struct key_parse parse;
502 struct nlattr *key;
503 struct cfg80211_cached_keys *result;
504 int rem, err, def = 0;
505
506 result = kzalloc(sizeof(*result), GFP_KERNEL);
507 if (!result)
508 return ERR_PTR(-ENOMEM);
509
510 result->def = -1;
511 result->defmgmt = -1;
512
513 nla_for_each_nested(key, keys, rem) {
514 memset(&parse, 0, sizeof(parse));
515 parse.idx = -1;
516
517 err = nl80211_parse_key_new(key, &parse);
518 if (err)
519 goto error;
520 err = -EINVAL;
521 if (!parse.p.key)
522 goto error;
523 if (parse.idx < 0 || parse.idx > 4)
524 goto error;
525 if (parse.def) {
526 if (def)
527 goto error;
528 def = 1;
529 result->def = parse.idx;
530 if (!parse.def_uni || !parse.def_multi)
531 goto error;
532 } else if (parse.defmgmt)
533 goto error;
534 err = cfg80211_validate_key_settings(rdev, &parse.p,
535 parse.idx, false, NULL);
536 if (err)
537 goto error;
538 result->params[parse.idx].cipher = parse.p.cipher;
539 result->params[parse.idx].key_len = parse.p.key_len;
540 result->params[parse.idx].key = result->data[parse.idx];
541 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
542 }
543
544 return result;
545 error:
546 kfree(result);
547 return ERR_PTR(err);
548 }
549
550 static int nl80211_key_allowed(struct wireless_dev *wdev)
551 {
552 ASSERT_WDEV_LOCK(wdev);
553
554 switch (wdev->iftype) {
555 case NL80211_IFTYPE_AP:
556 case NL80211_IFTYPE_AP_VLAN:
557 case NL80211_IFTYPE_P2P_GO:
558 case NL80211_IFTYPE_MESH_POINT:
559 break;
560 case NL80211_IFTYPE_ADHOC:
561 if (!wdev->current_bss)
562 return -ENOLINK;
563 break;
564 case NL80211_IFTYPE_STATION:
565 case NL80211_IFTYPE_P2P_CLIENT:
566 if (wdev->sme_state != CFG80211_SME_CONNECTED)
567 return -ENOLINK;
568 break;
569 default:
570 return -EINVAL;
571 }
572
573 return 0;
574 }
575
576 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
577 {
578 struct nlattr *nl_modes = nla_nest_start(msg, attr);
579 int i;
580
581 if (!nl_modes)
582 goto nla_put_failure;
583
584 i = 0;
585 while (ifmodes) {
586 if (ifmodes & 1)
587 NLA_PUT_FLAG(msg, i);
588 ifmodes >>= 1;
589 i++;
590 }
591
592 nla_nest_end(msg, nl_modes);
593 return 0;
594
595 nla_put_failure:
596 return -ENOBUFS;
597 }
598
599 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
600 struct sk_buff *msg)
601 {
602 struct nlattr *nl_combis;
603 int i, j;
604
605 nl_combis = nla_nest_start(msg,
606 NL80211_ATTR_INTERFACE_COMBINATIONS);
607 if (!nl_combis)
608 goto nla_put_failure;
609
610 for (i = 0; i < wiphy->n_iface_combinations; i++) {
611 const struct ieee80211_iface_combination *c;
612 struct nlattr *nl_combi, *nl_limits;
613
614 c = &wiphy->iface_combinations[i];
615
616 nl_combi = nla_nest_start(msg, i + 1);
617 if (!nl_combi)
618 goto nla_put_failure;
619
620 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
621 if (!nl_limits)
622 goto nla_put_failure;
623
624 for (j = 0; j < c->n_limits; j++) {
625 struct nlattr *nl_limit;
626
627 nl_limit = nla_nest_start(msg, j + 1);
628 if (!nl_limit)
629 goto nla_put_failure;
630 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
631 c->limits[j].max);
632 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
633 c->limits[j].types))
634 goto nla_put_failure;
635 nla_nest_end(msg, nl_limit);
636 }
637
638 nla_nest_end(msg, nl_limits);
639
640 if (c->beacon_int_infra_match)
641 NLA_PUT_FLAG(msg,
642 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
643 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
644 c->num_different_channels);
645 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
646 c->max_interfaces);
647
648 nla_nest_end(msg, nl_combi);
649 }
650
651 nla_nest_end(msg, nl_combis);
652
653 return 0;
654 nla_put_failure:
655 return -ENOBUFS;
656 }
657
658 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
659 struct cfg80211_registered_device *dev)
660 {
661 void *hdr;
662 struct nlattr *nl_bands, *nl_band;
663 struct nlattr *nl_freqs, *nl_freq;
664 struct nlattr *nl_rates, *nl_rate;
665 struct nlattr *nl_cmds;
666 enum ieee80211_band band;
667 struct ieee80211_channel *chan;
668 struct ieee80211_rate *rate;
669 int i;
670 const struct ieee80211_txrx_stypes *mgmt_stypes =
671 dev->wiphy.mgmt_stypes;
672
673 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
674 if (!hdr)
675 return -1;
676
677 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
678 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
679
680 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
681 cfg80211_rdev_list_generation);
682
683 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
684 dev->wiphy.retry_short);
685 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
686 dev->wiphy.retry_long);
687 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
688 dev->wiphy.frag_threshold);
689 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
690 dev->wiphy.rts_threshold);
691 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
692 dev->wiphy.coverage_class);
693 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
694 dev->wiphy.max_scan_ssids);
695 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
696 dev->wiphy.max_scan_ie_len);
697
698 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
699 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
700 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
701 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
702
703 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
704 sizeof(u32) * dev->wiphy.n_cipher_suites,
705 dev->wiphy.cipher_suites);
706
707 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
708 dev->wiphy.max_num_pmkids);
709
710 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
711 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
712
713 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
714 dev->wiphy.available_antennas_tx);
715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
716 dev->wiphy.available_antennas_rx);
717
718 if ((dev->wiphy.available_antennas_tx ||
719 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
720 u32 tx_ant = 0, rx_ant = 0;
721 int res;
722 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
723 if (!res) {
724 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
725 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
726 }
727 }
728
729 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
730 dev->wiphy.interface_modes))
731 goto nla_put_failure;
732
733 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
734 if (!nl_bands)
735 goto nla_put_failure;
736
737 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
738 if (!dev->wiphy.bands[band])
739 continue;
740
741 nl_band = nla_nest_start(msg, band);
742 if (!nl_band)
743 goto nla_put_failure;
744
745 /* add HT info */
746 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
747 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
748 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
749 &dev->wiphy.bands[band]->ht_cap.mcs);
750 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
751 dev->wiphy.bands[band]->ht_cap.cap);
752 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
753 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
754 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
755 dev->wiphy.bands[band]->ht_cap.ampdu_density);
756 }
757
758 /* add frequencies */
759 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
760 if (!nl_freqs)
761 goto nla_put_failure;
762
763 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
764 nl_freq = nla_nest_start(msg, i);
765 if (!nl_freq)
766 goto nla_put_failure;
767
768 chan = &dev->wiphy.bands[band]->channels[i];
769
770 if (nl80211_msg_put_channel(msg, chan))
771 goto nla_put_failure;
772
773 nla_nest_end(msg, nl_freq);
774 }
775
776 nla_nest_end(msg, nl_freqs);
777
778 /* add bitrates */
779 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
780 if (!nl_rates)
781 goto nla_put_failure;
782
783 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
784 nl_rate = nla_nest_start(msg, i);
785 if (!nl_rate)
786 goto nla_put_failure;
787
788 rate = &dev->wiphy.bands[band]->bitrates[i];
789 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
790 rate->bitrate);
791 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
792 NLA_PUT_FLAG(msg,
793 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
794
795 nla_nest_end(msg, nl_rate);
796 }
797
798 nla_nest_end(msg, nl_rates);
799
800 nla_nest_end(msg, nl_band);
801 }
802 nla_nest_end(msg, nl_bands);
803
804 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
805 if (!nl_cmds)
806 goto nla_put_failure;
807
808 i = 0;
809 #define CMD(op, n) \
810 do { \
811 if (dev->ops->op) { \
812 i++; \
813 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
814 } \
815 } while (0)
816
817 CMD(add_virtual_intf, NEW_INTERFACE);
818 CMD(change_virtual_intf, SET_INTERFACE);
819 CMD(add_key, NEW_KEY);
820 CMD(add_beacon, NEW_BEACON);
821 CMD(add_station, NEW_STATION);
822 CMD(add_mpath, NEW_MPATH);
823 CMD(update_mesh_config, SET_MESH_CONFIG);
824 CMD(change_bss, SET_BSS);
825 CMD(auth, AUTHENTICATE);
826 CMD(assoc, ASSOCIATE);
827 CMD(deauth, DEAUTHENTICATE);
828 CMD(disassoc, DISASSOCIATE);
829 CMD(join_ibss, JOIN_IBSS);
830 CMD(join_mesh, JOIN_MESH);
831 CMD(set_pmksa, SET_PMKSA);
832 CMD(del_pmksa, DEL_PMKSA);
833 CMD(flush_pmksa, FLUSH_PMKSA);
834 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
835 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
836 CMD(mgmt_tx, FRAME);
837 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
838 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
839 i++;
840 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
841 }
842 CMD(set_channel, SET_CHANNEL);
843 CMD(set_wds_peer, SET_WDS_PEER);
844 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
845 CMD(sched_scan_start, START_SCHED_SCAN);
846
847 #undef CMD
848
849 if (dev->ops->connect || dev->ops->auth) {
850 i++;
851 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
852 }
853
854 if (dev->ops->disconnect || dev->ops->deauth) {
855 i++;
856 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
857 }
858
859 nla_nest_end(msg, nl_cmds);
860
861 if (dev->ops->remain_on_channel)
862 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
863 dev->wiphy.max_remain_on_channel_duration);
864
865 /* for now at least assume all drivers have it */
866 if (dev->ops->mgmt_tx)
867 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
868
869 if (mgmt_stypes) {
870 u16 stypes;
871 struct nlattr *nl_ftypes, *nl_ifs;
872 enum nl80211_iftype ift;
873
874 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
875 if (!nl_ifs)
876 goto nla_put_failure;
877
878 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
879 nl_ftypes = nla_nest_start(msg, ift);
880 if (!nl_ftypes)
881 goto nla_put_failure;
882 i = 0;
883 stypes = mgmt_stypes[ift].tx;
884 while (stypes) {
885 if (stypes & 1)
886 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
887 (i << 4) | IEEE80211_FTYPE_MGMT);
888 stypes >>= 1;
889 i++;
890 }
891 nla_nest_end(msg, nl_ftypes);
892 }
893
894 nla_nest_end(msg, nl_ifs);
895
896 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
897 if (!nl_ifs)
898 goto nla_put_failure;
899
900 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
901 nl_ftypes = nla_nest_start(msg, ift);
902 if (!nl_ftypes)
903 goto nla_put_failure;
904 i = 0;
905 stypes = mgmt_stypes[ift].rx;
906 while (stypes) {
907 if (stypes & 1)
908 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
909 (i << 4) | IEEE80211_FTYPE_MGMT);
910 stypes >>= 1;
911 i++;
912 }
913 nla_nest_end(msg, nl_ftypes);
914 }
915 nla_nest_end(msg, nl_ifs);
916 }
917
918 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
919 struct nlattr *nl_wowlan;
920
921 nl_wowlan = nla_nest_start(msg,
922 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
923 if (!nl_wowlan)
924 goto nla_put_failure;
925
926 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
927 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
928 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
929 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
930 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
931 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
932 if (dev->wiphy.wowlan.n_patterns) {
933 struct nl80211_wowlan_pattern_support pat = {
934 .max_patterns = dev->wiphy.wowlan.n_patterns,
935 .min_pattern_len =
936 dev->wiphy.wowlan.pattern_min_len,
937 .max_pattern_len =
938 dev->wiphy.wowlan.pattern_max_len,
939 };
940 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
941 sizeof(pat), &pat);
942 }
943
944 nla_nest_end(msg, nl_wowlan);
945 }
946
947 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
948 dev->wiphy.software_iftypes))
949 goto nla_put_failure;
950
951 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
952 goto nla_put_failure;
953
954 return genlmsg_end(msg, hdr);
955
956 nla_put_failure:
957 genlmsg_cancel(msg, hdr);
958 return -EMSGSIZE;
959 }
960
961 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
962 {
963 int idx = 0;
964 int start = cb->args[0];
965 struct cfg80211_registered_device *dev;
966
967 mutex_lock(&cfg80211_mutex);
968 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
969 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
970 continue;
971 if (++idx <= start)
972 continue;
973 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
974 cb->nlh->nlmsg_seq, NLM_F_MULTI,
975 dev) < 0) {
976 idx--;
977 break;
978 }
979 }
980 mutex_unlock(&cfg80211_mutex);
981
982 cb->args[0] = idx;
983
984 return skb->len;
985 }
986
987 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
988 {
989 struct sk_buff *msg;
990 struct cfg80211_registered_device *dev = info->user_ptr[0];
991
992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
993 if (!msg)
994 return -ENOMEM;
995
996 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
997 nlmsg_free(msg);
998 return -ENOBUFS;
999 }
1000
1001 return genlmsg_reply(msg, info);
1002 }
1003
1004 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1005 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1006 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1007 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1008 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1009 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1010 };
1011
1012 static int parse_txq_params(struct nlattr *tb[],
1013 struct ieee80211_txq_params *txq_params)
1014 {
1015 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1016 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1017 !tb[NL80211_TXQ_ATTR_AIFS])
1018 return -EINVAL;
1019
1020 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1021 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1022 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1023 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1024 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1025
1026 return 0;
1027 }
1028
1029 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1030 {
1031 /*
1032 * You can only set the channel explicitly for AP, mesh
1033 * and WDS type interfaces; all others have their channel
1034 * managed via their respective "establish a connection"
1035 * command (connect, join, ...)
1036 *
1037 * Monitors are special as they are normally slaved to
1038 * whatever else is going on, so they behave as though
1039 * you tried setting the wiphy channel itself.
1040 */
1041 return !wdev ||
1042 wdev->iftype == NL80211_IFTYPE_AP ||
1043 wdev->iftype == NL80211_IFTYPE_WDS ||
1044 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1045 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1046 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1047 }
1048
1049 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1050 struct wireless_dev *wdev,
1051 struct genl_info *info)
1052 {
1053 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1054 u32 freq;
1055 int result;
1056
1057 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1058 return -EINVAL;
1059
1060 if (!nl80211_can_set_dev_channel(wdev))
1061 return -EOPNOTSUPP;
1062
1063 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1064 channel_type = nla_get_u32(info->attrs[
1065 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1066 if (channel_type != NL80211_CHAN_NO_HT &&
1067 channel_type != NL80211_CHAN_HT20 &&
1068 channel_type != NL80211_CHAN_HT40PLUS &&
1069 channel_type != NL80211_CHAN_HT40MINUS)
1070 return -EINVAL;
1071 }
1072
1073 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1074
1075 mutex_lock(&rdev->devlist_mtx);
1076 if (wdev) {
1077 wdev_lock(wdev);
1078 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1079 wdev_unlock(wdev);
1080 } else {
1081 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1082 }
1083 mutex_unlock(&rdev->devlist_mtx);
1084
1085 return result;
1086 }
1087
1088 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1089 {
1090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1091 struct net_device *netdev = info->user_ptr[1];
1092
1093 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1094 }
1095
1096 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1097 {
1098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1099 struct net_device *dev = info->user_ptr[1];
1100 struct wireless_dev *wdev = dev->ieee80211_ptr;
1101 const u8 *bssid;
1102
1103 if (!info->attrs[NL80211_ATTR_MAC])
1104 return -EINVAL;
1105
1106 if (netif_running(dev))
1107 return -EBUSY;
1108
1109 if (!rdev->ops->set_wds_peer)
1110 return -EOPNOTSUPP;
1111
1112 if (wdev->iftype != NL80211_IFTYPE_WDS)
1113 return -EOPNOTSUPP;
1114
1115 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1116 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1117 }
1118
1119
1120 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1121 {
1122 struct cfg80211_registered_device *rdev;
1123 struct net_device *netdev = NULL;
1124 struct wireless_dev *wdev;
1125 int result = 0, rem_txq_params = 0;
1126 struct nlattr *nl_txq_params;
1127 u32 changed;
1128 u8 retry_short = 0, retry_long = 0;
1129 u32 frag_threshold = 0, rts_threshold = 0;
1130 u8 coverage_class = 0;
1131
1132 /*
1133 * Try to find the wiphy and netdev. Normally this
1134 * function shouldn't need the netdev, but this is
1135 * done for backward compatibility -- previously
1136 * setting the channel was done per wiphy, but now
1137 * it is per netdev. Previous userland like hostapd
1138 * also passed a netdev to set_wiphy, so that it is
1139 * possible to let that go to the right netdev!
1140 */
1141 mutex_lock(&cfg80211_mutex);
1142
1143 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1144 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1145
1146 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1147 if (netdev && netdev->ieee80211_ptr) {
1148 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1149 mutex_lock(&rdev->mtx);
1150 } else
1151 netdev = NULL;
1152 }
1153
1154 if (!netdev) {
1155 rdev = __cfg80211_rdev_from_info(info);
1156 if (IS_ERR(rdev)) {
1157 mutex_unlock(&cfg80211_mutex);
1158 return PTR_ERR(rdev);
1159 }
1160 wdev = NULL;
1161 netdev = NULL;
1162 result = 0;
1163
1164 mutex_lock(&rdev->mtx);
1165 } else if (netif_running(netdev) &&
1166 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1167 wdev = netdev->ieee80211_ptr;
1168 else
1169 wdev = NULL;
1170
1171 /*
1172 * end workaround code, by now the rdev is available
1173 * and locked, and wdev may or may not be NULL.
1174 */
1175
1176 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1177 result = cfg80211_dev_rename(
1178 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1179
1180 mutex_unlock(&cfg80211_mutex);
1181
1182 if (result)
1183 goto bad_res;
1184
1185 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1186 struct ieee80211_txq_params txq_params;
1187 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1188
1189 if (!rdev->ops->set_txq_params) {
1190 result = -EOPNOTSUPP;
1191 goto bad_res;
1192 }
1193
1194 nla_for_each_nested(nl_txq_params,
1195 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1196 rem_txq_params) {
1197 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1198 nla_data(nl_txq_params),
1199 nla_len(nl_txq_params),
1200 txq_params_policy);
1201 result = parse_txq_params(tb, &txq_params);
1202 if (result)
1203 goto bad_res;
1204
1205 result = rdev->ops->set_txq_params(&rdev->wiphy,
1206 &txq_params);
1207 if (result)
1208 goto bad_res;
1209 }
1210 }
1211
1212 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1213 result = __nl80211_set_channel(rdev, wdev, info);
1214 if (result)
1215 goto bad_res;
1216 }
1217
1218 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1219 enum nl80211_tx_power_setting type;
1220 int idx, mbm = 0;
1221
1222 if (!rdev->ops->set_tx_power) {
1223 result = -EOPNOTSUPP;
1224 goto bad_res;
1225 }
1226
1227 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1228 type = nla_get_u32(info->attrs[idx]);
1229
1230 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1231 (type != NL80211_TX_POWER_AUTOMATIC)) {
1232 result = -EINVAL;
1233 goto bad_res;
1234 }
1235
1236 if (type != NL80211_TX_POWER_AUTOMATIC) {
1237 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1238 mbm = nla_get_u32(info->attrs[idx]);
1239 }
1240
1241 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1242 if (result)
1243 goto bad_res;
1244 }
1245
1246 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1247 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1248 u32 tx_ant, rx_ant;
1249 if ((!rdev->wiphy.available_antennas_tx &&
1250 !rdev->wiphy.available_antennas_rx) ||
1251 !rdev->ops->set_antenna) {
1252 result = -EOPNOTSUPP;
1253 goto bad_res;
1254 }
1255
1256 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1257 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1258
1259 /* reject antenna configurations which don't match the
1260 * available antenna masks, except for the "all" mask */
1261 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1262 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1263 result = -EINVAL;
1264 goto bad_res;
1265 }
1266
1267 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1268 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1269
1270 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1271 if (result)
1272 goto bad_res;
1273 }
1274
1275 changed = 0;
1276
1277 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1278 retry_short = nla_get_u8(
1279 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1280 if (retry_short == 0) {
1281 result = -EINVAL;
1282 goto bad_res;
1283 }
1284 changed |= WIPHY_PARAM_RETRY_SHORT;
1285 }
1286
1287 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1288 retry_long = nla_get_u8(
1289 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1290 if (retry_long == 0) {
1291 result = -EINVAL;
1292 goto bad_res;
1293 }
1294 changed |= WIPHY_PARAM_RETRY_LONG;
1295 }
1296
1297 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1298 frag_threshold = nla_get_u32(
1299 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1300 if (frag_threshold < 256) {
1301 result = -EINVAL;
1302 goto bad_res;
1303 }
1304 if (frag_threshold != (u32) -1) {
1305 /*
1306 * Fragments (apart from the last one) are required to
1307 * have even length. Make the fragmentation code
1308 * simpler by stripping LSB should someone try to use
1309 * odd threshold value.
1310 */
1311 frag_threshold &= ~0x1;
1312 }
1313 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1314 }
1315
1316 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1317 rts_threshold = nla_get_u32(
1318 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1319 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1320 }
1321
1322 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1323 coverage_class = nla_get_u8(
1324 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1325 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1326 }
1327
1328 if (changed) {
1329 u8 old_retry_short, old_retry_long;
1330 u32 old_frag_threshold, old_rts_threshold;
1331 u8 old_coverage_class;
1332
1333 if (!rdev->ops->set_wiphy_params) {
1334 result = -EOPNOTSUPP;
1335 goto bad_res;
1336 }
1337
1338 old_retry_short = rdev->wiphy.retry_short;
1339 old_retry_long = rdev->wiphy.retry_long;
1340 old_frag_threshold = rdev->wiphy.frag_threshold;
1341 old_rts_threshold = rdev->wiphy.rts_threshold;
1342 old_coverage_class = rdev->wiphy.coverage_class;
1343
1344 if (changed & WIPHY_PARAM_RETRY_SHORT)
1345 rdev->wiphy.retry_short = retry_short;
1346 if (changed & WIPHY_PARAM_RETRY_LONG)
1347 rdev->wiphy.retry_long = retry_long;
1348 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1349 rdev->wiphy.frag_threshold = frag_threshold;
1350 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1351 rdev->wiphy.rts_threshold = rts_threshold;
1352 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1353 rdev->wiphy.coverage_class = coverage_class;
1354
1355 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1356 if (result) {
1357 rdev->wiphy.retry_short = old_retry_short;
1358 rdev->wiphy.retry_long = old_retry_long;
1359 rdev->wiphy.frag_threshold = old_frag_threshold;
1360 rdev->wiphy.rts_threshold = old_rts_threshold;
1361 rdev->wiphy.coverage_class = old_coverage_class;
1362 }
1363 }
1364
1365 bad_res:
1366 mutex_unlock(&rdev->mtx);
1367 if (netdev)
1368 dev_put(netdev);
1369 return result;
1370 }
1371
1372
1373 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1374 struct cfg80211_registered_device *rdev,
1375 struct net_device *dev)
1376 {
1377 void *hdr;
1378
1379 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1380 if (!hdr)
1381 return -1;
1382
1383 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1384 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1385 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1386 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1387
1388 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1389 rdev->devlist_generation ^
1390 (cfg80211_rdev_list_generation << 2));
1391
1392 return genlmsg_end(msg, hdr);
1393
1394 nla_put_failure:
1395 genlmsg_cancel(msg, hdr);
1396 return -EMSGSIZE;
1397 }
1398
1399 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1400 {
1401 int wp_idx = 0;
1402 int if_idx = 0;
1403 int wp_start = cb->args[0];
1404 int if_start = cb->args[1];
1405 struct cfg80211_registered_device *rdev;
1406 struct wireless_dev *wdev;
1407
1408 mutex_lock(&cfg80211_mutex);
1409 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1410 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1411 continue;
1412 if (wp_idx < wp_start) {
1413 wp_idx++;
1414 continue;
1415 }
1416 if_idx = 0;
1417
1418 mutex_lock(&rdev->devlist_mtx);
1419 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1420 if (if_idx < if_start) {
1421 if_idx++;
1422 continue;
1423 }
1424 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1425 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1426 rdev, wdev->netdev) < 0) {
1427 mutex_unlock(&rdev->devlist_mtx);
1428 goto out;
1429 }
1430 if_idx++;
1431 }
1432 mutex_unlock(&rdev->devlist_mtx);
1433
1434 wp_idx++;
1435 }
1436 out:
1437 mutex_unlock(&cfg80211_mutex);
1438
1439 cb->args[0] = wp_idx;
1440 cb->args[1] = if_idx;
1441
1442 return skb->len;
1443 }
1444
1445 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1446 {
1447 struct sk_buff *msg;
1448 struct cfg80211_registered_device *dev = info->user_ptr[0];
1449 struct net_device *netdev = info->user_ptr[1];
1450
1451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1452 if (!msg)
1453 return -ENOMEM;
1454
1455 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1456 dev, netdev) < 0) {
1457 nlmsg_free(msg);
1458 return -ENOBUFS;
1459 }
1460
1461 return genlmsg_reply(msg, info);
1462 }
1463
1464 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1465 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1466 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1467 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1468 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1469 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1470 };
1471
1472 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1473 {
1474 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1475 int flag;
1476
1477 *mntrflags = 0;
1478
1479 if (!nla)
1480 return -EINVAL;
1481
1482 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1483 nla, mntr_flags_policy))
1484 return -EINVAL;
1485
1486 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1487 if (flags[flag])
1488 *mntrflags |= (1<<flag);
1489
1490 return 0;
1491 }
1492
1493 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1494 struct net_device *netdev, u8 use_4addr,
1495 enum nl80211_iftype iftype)
1496 {
1497 if (!use_4addr) {
1498 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1499 return -EBUSY;
1500 return 0;
1501 }
1502
1503 switch (iftype) {
1504 case NL80211_IFTYPE_AP_VLAN:
1505 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1506 return 0;
1507 break;
1508 case NL80211_IFTYPE_STATION:
1509 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1510 return 0;
1511 break;
1512 default:
1513 break;
1514 }
1515
1516 return -EOPNOTSUPP;
1517 }
1518
1519 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1520 {
1521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1522 struct vif_params params;
1523 int err;
1524 enum nl80211_iftype otype, ntype;
1525 struct net_device *dev = info->user_ptr[1];
1526 u32 _flags, *flags = NULL;
1527 bool change = false;
1528
1529 memset(&params, 0, sizeof(params));
1530
1531 otype = ntype = dev->ieee80211_ptr->iftype;
1532
1533 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1534 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1535 if (otype != ntype)
1536 change = true;
1537 if (ntype > NL80211_IFTYPE_MAX)
1538 return -EINVAL;
1539 }
1540
1541 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1542 struct wireless_dev *wdev = dev->ieee80211_ptr;
1543
1544 if (ntype != NL80211_IFTYPE_MESH_POINT)
1545 return -EINVAL;
1546 if (netif_running(dev))
1547 return -EBUSY;
1548
1549 wdev_lock(wdev);
1550 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1551 IEEE80211_MAX_MESH_ID_LEN);
1552 wdev->mesh_id_up_len =
1553 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1554 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1555 wdev->mesh_id_up_len);
1556 wdev_unlock(wdev);
1557 }
1558
1559 if (info->attrs[NL80211_ATTR_4ADDR]) {
1560 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1561 change = true;
1562 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1563 if (err)
1564 return err;
1565 } else {
1566 params.use_4addr = -1;
1567 }
1568
1569 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1570 if (ntype != NL80211_IFTYPE_MONITOR)
1571 return -EINVAL;
1572 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1573 &_flags);
1574 if (err)
1575 return err;
1576
1577 flags = &_flags;
1578 change = true;
1579 }
1580
1581 if (change)
1582 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1583 else
1584 err = 0;
1585
1586 if (!err && params.use_4addr != -1)
1587 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1588
1589 return err;
1590 }
1591
1592 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1593 {
1594 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1595 struct vif_params params;
1596 struct net_device *dev;
1597 int err;
1598 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1599 u32 flags;
1600
1601 memset(&params, 0, sizeof(params));
1602
1603 if (!info->attrs[NL80211_ATTR_IFNAME])
1604 return -EINVAL;
1605
1606 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1607 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1608 if (type > NL80211_IFTYPE_MAX)
1609 return -EINVAL;
1610 }
1611
1612 if (!rdev->ops->add_virtual_intf ||
1613 !(rdev->wiphy.interface_modes & (1 << type)))
1614 return -EOPNOTSUPP;
1615
1616 if (info->attrs[NL80211_ATTR_4ADDR]) {
1617 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1618 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1619 if (err)
1620 return err;
1621 }
1622
1623 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1624 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1625 &flags);
1626 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1627 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1628 type, err ? NULL : &flags, &params);
1629 if (IS_ERR(dev))
1630 return PTR_ERR(dev);
1631
1632 if (type == NL80211_IFTYPE_MESH_POINT &&
1633 info->attrs[NL80211_ATTR_MESH_ID]) {
1634 struct wireless_dev *wdev = dev->ieee80211_ptr;
1635
1636 wdev_lock(wdev);
1637 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1638 IEEE80211_MAX_MESH_ID_LEN);
1639 wdev->mesh_id_up_len =
1640 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1641 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1642 wdev->mesh_id_up_len);
1643 wdev_unlock(wdev);
1644 }
1645
1646 return 0;
1647 }
1648
1649 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1650 {
1651 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1652 struct net_device *dev = info->user_ptr[1];
1653
1654 if (!rdev->ops->del_virtual_intf)
1655 return -EOPNOTSUPP;
1656
1657 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1658 }
1659
1660 struct get_key_cookie {
1661 struct sk_buff *msg;
1662 int error;
1663 int idx;
1664 };
1665
1666 static void get_key_callback(void *c, struct key_params *params)
1667 {
1668 struct nlattr *key;
1669 struct get_key_cookie *cookie = c;
1670
1671 if (params->key)
1672 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1673 params->key_len, params->key);
1674
1675 if (params->seq)
1676 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1677 params->seq_len, params->seq);
1678
1679 if (params->cipher)
1680 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1681 params->cipher);
1682
1683 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1684 if (!key)
1685 goto nla_put_failure;
1686
1687 if (params->key)
1688 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1689 params->key_len, params->key);
1690
1691 if (params->seq)
1692 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1693 params->seq_len, params->seq);
1694
1695 if (params->cipher)
1696 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1697 params->cipher);
1698
1699 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1700
1701 nla_nest_end(cookie->msg, key);
1702
1703 return;
1704 nla_put_failure:
1705 cookie->error = 1;
1706 }
1707
1708 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1709 {
1710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1711 int err;
1712 struct net_device *dev = info->user_ptr[1];
1713 u8 key_idx = 0;
1714 const u8 *mac_addr = NULL;
1715 bool pairwise;
1716 struct get_key_cookie cookie = {
1717 .error = 0,
1718 };
1719 void *hdr;
1720 struct sk_buff *msg;
1721
1722 if (info->attrs[NL80211_ATTR_KEY_IDX])
1723 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1724
1725 if (key_idx > 5)
1726 return -EINVAL;
1727
1728 if (info->attrs[NL80211_ATTR_MAC])
1729 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1730
1731 pairwise = !!mac_addr;
1732 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1733 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1734 if (kt >= NUM_NL80211_KEYTYPES)
1735 return -EINVAL;
1736 if (kt != NL80211_KEYTYPE_GROUP &&
1737 kt != NL80211_KEYTYPE_PAIRWISE)
1738 return -EINVAL;
1739 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1740 }
1741
1742 if (!rdev->ops->get_key)
1743 return -EOPNOTSUPP;
1744
1745 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1746 if (!msg)
1747 return -ENOMEM;
1748
1749 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1750 NL80211_CMD_NEW_KEY);
1751 if (IS_ERR(hdr))
1752 return PTR_ERR(hdr);
1753
1754 cookie.msg = msg;
1755 cookie.idx = key_idx;
1756
1757 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1758 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1759 if (mac_addr)
1760 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1761
1762 if (pairwise && mac_addr &&
1763 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1764 return -ENOENT;
1765
1766 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1767 mac_addr, &cookie, get_key_callback);
1768
1769 if (err)
1770 goto free_msg;
1771
1772 if (cookie.error)
1773 goto nla_put_failure;
1774
1775 genlmsg_end(msg, hdr);
1776 return genlmsg_reply(msg, info);
1777
1778 nla_put_failure:
1779 err = -ENOBUFS;
1780 free_msg:
1781 nlmsg_free(msg);
1782 return err;
1783 }
1784
1785 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1786 {
1787 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1788 struct key_parse key;
1789 int err;
1790 struct net_device *dev = info->user_ptr[1];
1791
1792 err = nl80211_parse_key(info, &key);
1793 if (err)
1794 return err;
1795
1796 if (key.idx < 0)
1797 return -EINVAL;
1798
1799 /* only support setting default key */
1800 if (!key.def && !key.defmgmt)
1801 return -EINVAL;
1802
1803 wdev_lock(dev->ieee80211_ptr);
1804
1805 if (key.def) {
1806 if (!rdev->ops->set_default_key) {
1807 err = -EOPNOTSUPP;
1808 goto out;
1809 }
1810
1811 err = nl80211_key_allowed(dev->ieee80211_ptr);
1812 if (err)
1813 goto out;
1814
1815 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1816 key.def_uni, key.def_multi);
1817
1818 if (err)
1819 goto out;
1820
1821 #ifdef CONFIG_CFG80211_WEXT
1822 dev->ieee80211_ptr->wext.default_key = key.idx;
1823 #endif
1824 } else {
1825 if (key.def_uni || !key.def_multi) {
1826 err = -EINVAL;
1827 goto out;
1828 }
1829
1830 if (!rdev->ops->set_default_mgmt_key) {
1831 err = -EOPNOTSUPP;
1832 goto out;
1833 }
1834
1835 err = nl80211_key_allowed(dev->ieee80211_ptr);
1836 if (err)
1837 goto out;
1838
1839 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1840 dev, key.idx);
1841 if (err)
1842 goto out;
1843
1844 #ifdef CONFIG_CFG80211_WEXT
1845 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1846 #endif
1847 }
1848
1849 out:
1850 wdev_unlock(dev->ieee80211_ptr);
1851
1852 return err;
1853 }
1854
1855 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1856 {
1857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1858 int err;
1859 struct net_device *dev = info->user_ptr[1];
1860 struct key_parse key;
1861 const u8 *mac_addr = NULL;
1862
1863 err = nl80211_parse_key(info, &key);
1864 if (err)
1865 return err;
1866
1867 if (!key.p.key)
1868 return -EINVAL;
1869
1870 if (info->attrs[NL80211_ATTR_MAC])
1871 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1872
1873 if (key.type == -1) {
1874 if (mac_addr)
1875 key.type = NL80211_KEYTYPE_PAIRWISE;
1876 else
1877 key.type = NL80211_KEYTYPE_GROUP;
1878 }
1879
1880 /* for now */
1881 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1882 key.type != NL80211_KEYTYPE_GROUP)
1883 return -EINVAL;
1884
1885 if (!rdev->ops->add_key)
1886 return -EOPNOTSUPP;
1887
1888 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1889 key.type == NL80211_KEYTYPE_PAIRWISE,
1890 mac_addr))
1891 return -EINVAL;
1892
1893 wdev_lock(dev->ieee80211_ptr);
1894 err = nl80211_key_allowed(dev->ieee80211_ptr);
1895 if (!err)
1896 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1897 key.type == NL80211_KEYTYPE_PAIRWISE,
1898 mac_addr, &key.p);
1899 wdev_unlock(dev->ieee80211_ptr);
1900
1901 return err;
1902 }
1903
1904 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1905 {
1906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1907 int err;
1908 struct net_device *dev = info->user_ptr[1];
1909 u8 *mac_addr = NULL;
1910 struct key_parse key;
1911
1912 err = nl80211_parse_key(info, &key);
1913 if (err)
1914 return err;
1915
1916 if (info->attrs[NL80211_ATTR_MAC])
1917 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1918
1919 if (key.type == -1) {
1920 if (mac_addr)
1921 key.type = NL80211_KEYTYPE_PAIRWISE;
1922 else
1923 key.type = NL80211_KEYTYPE_GROUP;
1924 }
1925
1926 /* for now */
1927 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1928 key.type != NL80211_KEYTYPE_GROUP)
1929 return -EINVAL;
1930
1931 if (!rdev->ops->del_key)
1932 return -EOPNOTSUPP;
1933
1934 wdev_lock(dev->ieee80211_ptr);
1935 err = nl80211_key_allowed(dev->ieee80211_ptr);
1936
1937 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1938 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1939 err = -ENOENT;
1940
1941 if (!err)
1942 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1943 key.type == NL80211_KEYTYPE_PAIRWISE,
1944 mac_addr);
1945
1946 #ifdef CONFIG_CFG80211_WEXT
1947 if (!err) {
1948 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1949 dev->ieee80211_ptr->wext.default_key = -1;
1950 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1951 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1952 }
1953 #endif
1954 wdev_unlock(dev->ieee80211_ptr);
1955
1956 return err;
1957 }
1958
1959 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1960 {
1961 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1962 struct beacon_parameters *info);
1963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1964 struct net_device *dev = info->user_ptr[1];
1965 struct wireless_dev *wdev = dev->ieee80211_ptr;
1966 struct beacon_parameters params;
1967 int haveinfo = 0, err;
1968
1969 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1970 return -EINVAL;
1971
1972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1974 return -EOPNOTSUPP;
1975
1976 memset(&params, 0, sizeof(params));
1977
1978 switch (info->genlhdr->cmd) {
1979 case NL80211_CMD_NEW_BEACON:
1980 /* these are required for NEW_BEACON */
1981 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1982 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1983 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1984 return -EINVAL;
1985
1986 params.interval =
1987 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1988 params.dtim_period =
1989 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1990
1991 err = cfg80211_validate_beacon_int(rdev, params.interval);
1992 if (err)
1993 return err;
1994
1995 call = rdev->ops->add_beacon;
1996 break;
1997 case NL80211_CMD_SET_BEACON:
1998 call = rdev->ops->set_beacon;
1999 break;
2000 default:
2001 WARN_ON(1);
2002 return -EOPNOTSUPP;
2003 }
2004
2005 if (!call)
2006 return -EOPNOTSUPP;
2007
2008 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2009 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2010 params.head_len =
2011 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2012 haveinfo = 1;
2013 }
2014
2015 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2016 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2017 params.tail_len =
2018 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2019 haveinfo = 1;
2020 }
2021
2022 if (!haveinfo)
2023 return -EINVAL;
2024
2025 err = call(&rdev->wiphy, dev, &params);
2026 if (!err && params.interval)
2027 wdev->beacon_interval = params.interval;
2028 return err;
2029 }
2030
2031 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2032 {
2033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2034 struct net_device *dev = info->user_ptr[1];
2035 struct wireless_dev *wdev = dev->ieee80211_ptr;
2036 int err;
2037
2038 if (!rdev->ops->del_beacon)
2039 return -EOPNOTSUPP;
2040
2041 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2042 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2043 return -EOPNOTSUPP;
2044
2045 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2046 if (!err)
2047 wdev->beacon_interval = 0;
2048 return err;
2049 }
2050
2051 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2052 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2053 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2054 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2055 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2056 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2057 };
2058
2059 static int parse_station_flags(struct genl_info *info,
2060 struct station_parameters *params)
2061 {
2062 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2063 struct nlattr *nla;
2064 int flag;
2065
2066 /*
2067 * Try parsing the new attribute first so userspace
2068 * can specify both for older kernels.
2069 */
2070 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2071 if (nla) {
2072 struct nl80211_sta_flag_update *sta_flags;
2073
2074 sta_flags = nla_data(nla);
2075 params->sta_flags_mask = sta_flags->mask;
2076 params->sta_flags_set = sta_flags->set;
2077 if ((params->sta_flags_mask |
2078 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2079 return -EINVAL;
2080 return 0;
2081 }
2082
2083 /* if present, parse the old attribute */
2084
2085 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2086 if (!nla)
2087 return 0;
2088
2089 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2090 nla, sta_flags_policy))
2091 return -EINVAL;
2092
2093 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2094 params->sta_flags_mask &= ~1;
2095
2096 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2097 if (flags[flag])
2098 params->sta_flags_set |= (1<<flag);
2099
2100 return 0;
2101 }
2102
2103 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2104 int attr)
2105 {
2106 struct nlattr *rate;
2107 u16 bitrate;
2108
2109 rate = nla_nest_start(msg, attr);
2110 if (!rate)
2111 goto nla_put_failure;
2112
2113 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2114 bitrate = cfg80211_calculate_bitrate(info);
2115 if (bitrate > 0)
2116 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2117
2118 if (info->flags & RATE_INFO_FLAGS_MCS)
2119 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2120 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2121 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2122 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2123 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2124
2125 nla_nest_end(msg, rate);
2126 return true;
2127
2128 nla_put_failure:
2129 return false;
2130 }
2131
2132 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2133 int flags, struct net_device *dev,
2134 const u8 *mac_addr, struct station_info *sinfo)
2135 {
2136 void *hdr;
2137 struct nlattr *sinfoattr, *bss_param;
2138
2139 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2140 if (!hdr)
2141 return -1;
2142
2143 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2144 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2145
2146 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2147
2148 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2149 if (!sinfoattr)
2150 goto nla_put_failure;
2151 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2152 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2153 sinfo->connected_time);
2154 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2155 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2156 sinfo->inactive_time);
2157 if (sinfo->filled & STATION_INFO_RX_BYTES)
2158 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2159 sinfo->rx_bytes);
2160 if (sinfo->filled & STATION_INFO_TX_BYTES)
2161 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2162 sinfo->tx_bytes);
2163 if (sinfo->filled & STATION_INFO_LLID)
2164 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2165 sinfo->llid);
2166 if (sinfo->filled & STATION_INFO_PLID)
2167 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2168 sinfo->plid);
2169 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2170 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2171 sinfo->plink_state);
2172 if (sinfo->filled & STATION_INFO_SIGNAL)
2173 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2174 sinfo->signal);
2175 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2176 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2177 sinfo->signal_avg);
2178 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2179 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2180 NL80211_STA_INFO_TX_BITRATE))
2181 goto nla_put_failure;
2182 }
2183 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2184 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2185 NL80211_STA_INFO_RX_BITRATE))
2186 goto nla_put_failure;
2187 }
2188 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2189 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2190 sinfo->rx_packets);
2191 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2192 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2193 sinfo->tx_packets);
2194 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2195 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2196 sinfo->tx_retries);
2197 if (sinfo->filled & STATION_INFO_TX_FAILED)
2198 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2199 sinfo->tx_failed);
2200 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2201 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2202 if (!bss_param)
2203 goto nla_put_failure;
2204
2205 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2206 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2207 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2208 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2209 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2210 NLA_PUT_FLAG(msg,
2211 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2212 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2213 sinfo->bss_param.dtim_period);
2214 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2215 sinfo->bss_param.beacon_interval);
2216
2217 nla_nest_end(msg, bss_param);
2218 }
2219 nla_nest_end(msg, sinfoattr);
2220
2221 return genlmsg_end(msg, hdr);
2222
2223 nla_put_failure:
2224 genlmsg_cancel(msg, hdr);
2225 return -EMSGSIZE;
2226 }
2227
2228 static int nl80211_dump_station(struct sk_buff *skb,
2229 struct netlink_callback *cb)
2230 {
2231 struct station_info sinfo;
2232 struct cfg80211_registered_device *dev;
2233 struct net_device *netdev;
2234 u8 mac_addr[ETH_ALEN];
2235 int sta_idx = cb->args[1];
2236 int err;
2237
2238 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2239 if (err)
2240 return err;
2241
2242 if (!dev->ops->dump_station) {
2243 err = -EOPNOTSUPP;
2244 goto out_err;
2245 }
2246
2247 while (1) {
2248 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2249 mac_addr, &sinfo);
2250 if (err == -ENOENT)
2251 break;
2252 if (err)
2253 goto out_err;
2254
2255 if (nl80211_send_station(skb,
2256 NETLINK_CB(cb->skb).pid,
2257 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2258 netdev, mac_addr,
2259 &sinfo) < 0)
2260 goto out;
2261
2262 sta_idx++;
2263 }
2264
2265
2266 out:
2267 cb->args[1] = sta_idx;
2268 err = skb->len;
2269 out_err:
2270 nl80211_finish_netdev_dump(dev);
2271
2272 return err;
2273 }
2274
2275 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2276 {
2277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2278 struct net_device *dev = info->user_ptr[1];
2279 struct station_info sinfo;
2280 struct sk_buff *msg;
2281 u8 *mac_addr = NULL;
2282 int err;
2283
2284 memset(&sinfo, 0, sizeof(sinfo));
2285
2286 if (!info->attrs[NL80211_ATTR_MAC])
2287 return -EINVAL;
2288
2289 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2290
2291 if (!rdev->ops->get_station)
2292 return -EOPNOTSUPP;
2293
2294 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2295 if (err)
2296 return err;
2297
2298 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2299 if (!msg)
2300 return -ENOMEM;
2301
2302 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2303 dev, mac_addr, &sinfo) < 0) {
2304 nlmsg_free(msg);
2305 return -ENOBUFS;
2306 }
2307
2308 return genlmsg_reply(msg, info);
2309 }
2310
2311 /*
2312 * Get vlan interface making sure it is running and on the right wiphy.
2313 */
2314 static int get_vlan(struct genl_info *info,
2315 struct cfg80211_registered_device *rdev,
2316 struct net_device **vlan)
2317 {
2318 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2319 *vlan = NULL;
2320
2321 if (vlanattr) {
2322 *vlan = dev_get_by_index(genl_info_net(info),
2323 nla_get_u32(vlanattr));
2324 if (!*vlan)
2325 return -ENODEV;
2326 if (!(*vlan)->ieee80211_ptr)
2327 return -EINVAL;
2328 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2329 return -EINVAL;
2330 if (!netif_running(*vlan))
2331 return -ENETDOWN;
2332 }
2333 return 0;
2334 }
2335
2336 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2337 {
2338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2339 int err;
2340 struct net_device *dev = info->user_ptr[1];
2341 struct station_parameters params;
2342 u8 *mac_addr = NULL;
2343
2344 memset(&params, 0, sizeof(params));
2345
2346 params.listen_interval = -1;
2347 params.plink_state = -1;
2348
2349 if (info->attrs[NL80211_ATTR_STA_AID])
2350 return -EINVAL;
2351
2352 if (!info->attrs[NL80211_ATTR_MAC])
2353 return -EINVAL;
2354
2355 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2356
2357 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2358 params.supported_rates =
2359 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2360 params.supported_rates_len =
2361 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2362 }
2363
2364 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2365 params.listen_interval =
2366 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2367
2368 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2369 params.ht_capa =
2370 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2371
2372 if (parse_station_flags(info, &params))
2373 return -EINVAL;
2374
2375 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2376 params.plink_action =
2377 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2378
2379 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2380 params.plink_state =
2381 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2382
2383 err = get_vlan(info, rdev, &params.vlan);
2384 if (err)
2385 goto out;
2386
2387 /* validate settings */
2388 err = 0;
2389
2390 switch (dev->ieee80211_ptr->iftype) {
2391 case NL80211_IFTYPE_AP:
2392 case NL80211_IFTYPE_AP_VLAN:
2393 case NL80211_IFTYPE_P2P_GO:
2394 /* disallow mesh-specific things */
2395 if (params.plink_action)
2396 err = -EINVAL;
2397 break;
2398 case NL80211_IFTYPE_P2P_CLIENT:
2399 case NL80211_IFTYPE_STATION:
2400 /* disallow everything but AUTHORIZED flag */
2401 if (params.plink_action)
2402 err = -EINVAL;
2403 if (params.vlan)
2404 err = -EINVAL;
2405 if (params.supported_rates)
2406 err = -EINVAL;
2407 if (params.ht_capa)
2408 err = -EINVAL;
2409 if (params.listen_interval >= 0)
2410 err = -EINVAL;
2411 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2412 err = -EINVAL;
2413 break;
2414 case NL80211_IFTYPE_MESH_POINT:
2415 /* disallow things mesh doesn't support */
2416 if (params.vlan)
2417 err = -EINVAL;
2418 if (params.ht_capa)
2419 err = -EINVAL;
2420 if (params.listen_interval >= 0)
2421 err = -EINVAL;
2422 if (params.sta_flags_mask &
2423 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2424 BIT(NL80211_STA_FLAG_MFP) |
2425 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2426 err = -EINVAL;
2427 break;
2428 default:
2429 err = -EINVAL;
2430 }
2431
2432 if (err)
2433 goto out;
2434
2435 if (!rdev->ops->change_station) {
2436 err = -EOPNOTSUPP;
2437 goto out;
2438 }
2439
2440 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2441
2442 out:
2443 if (params.vlan)
2444 dev_put(params.vlan);
2445
2446 return err;
2447 }
2448
2449 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2450 {
2451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2452 int err;
2453 struct net_device *dev = info->user_ptr[1];
2454 struct station_parameters params;
2455 u8 *mac_addr = NULL;
2456
2457 memset(&params, 0, sizeof(params));
2458
2459 if (!info->attrs[NL80211_ATTR_MAC])
2460 return -EINVAL;
2461
2462 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2463 return -EINVAL;
2464
2465 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2466 return -EINVAL;
2467
2468 if (!info->attrs[NL80211_ATTR_STA_AID])
2469 return -EINVAL;
2470
2471 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2472 params.supported_rates =
2473 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2474 params.supported_rates_len =
2475 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2476 params.listen_interval =
2477 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2478
2479 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2480 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2481 return -EINVAL;
2482
2483 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2484 params.ht_capa =
2485 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2486
2487 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2488 params.plink_action =
2489 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2490
2491 if (parse_station_flags(info, &params))
2492 return -EINVAL;
2493
2494 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2495 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2496 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2497 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2498 return -EINVAL;
2499
2500 err = get_vlan(info, rdev, &params.vlan);
2501 if (err)
2502 goto out;
2503
2504 /* validate settings */
2505 err = 0;
2506
2507 if (!rdev->ops->add_station) {
2508 err = -EOPNOTSUPP;
2509 goto out;
2510 }
2511
2512 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2513
2514 out:
2515 if (params.vlan)
2516 dev_put(params.vlan);
2517 return err;
2518 }
2519
2520 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2521 {
2522 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2523 struct net_device *dev = info->user_ptr[1];
2524 u8 *mac_addr = NULL;
2525
2526 if (info->attrs[NL80211_ATTR_MAC])
2527 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2528
2529 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2530 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2531 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2532 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2533 return -EINVAL;
2534
2535 if (!rdev->ops->del_station)
2536 return -EOPNOTSUPP;
2537
2538 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2539 }
2540
2541 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2542 int flags, struct net_device *dev,
2543 u8 *dst, u8 *next_hop,
2544 struct mpath_info *pinfo)
2545 {
2546 void *hdr;
2547 struct nlattr *pinfoattr;
2548
2549 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2550 if (!hdr)
2551 return -1;
2552
2553 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2554 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2555 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2556
2557 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2558
2559 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2560 if (!pinfoattr)
2561 goto nla_put_failure;
2562 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2563 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2564 pinfo->frame_qlen);
2565 if (pinfo->filled & MPATH_INFO_SN)
2566 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2567 pinfo->sn);
2568 if (pinfo->filled & MPATH_INFO_METRIC)
2569 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2570 pinfo->metric);
2571 if (pinfo->filled & MPATH_INFO_EXPTIME)
2572 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2573 pinfo->exptime);
2574 if (pinfo->filled & MPATH_INFO_FLAGS)
2575 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2576 pinfo->flags);
2577 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2578 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2579 pinfo->discovery_timeout);
2580 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2581 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2582 pinfo->discovery_retries);
2583
2584 nla_nest_end(msg, pinfoattr);
2585
2586 return genlmsg_end(msg, hdr);
2587
2588 nla_put_failure:
2589 genlmsg_cancel(msg, hdr);
2590 return -EMSGSIZE;
2591 }
2592
2593 static int nl80211_dump_mpath(struct sk_buff *skb,
2594 struct netlink_callback *cb)
2595 {
2596 struct mpath_info pinfo;
2597 struct cfg80211_registered_device *dev;
2598 struct net_device *netdev;
2599 u8 dst[ETH_ALEN];
2600 u8 next_hop[ETH_ALEN];
2601 int path_idx = cb->args[1];
2602 int err;
2603
2604 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2605 if (err)
2606 return err;
2607
2608 if (!dev->ops->dump_mpath) {
2609 err = -EOPNOTSUPP;
2610 goto out_err;
2611 }
2612
2613 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2614 err = -EOPNOTSUPP;
2615 goto out_err;
2616 }
2617
2618 while (1) {
2619 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2620 dst, next_hop, &pinfo);
2621 if (err == -ENOENT)
2622 break;
2623 if (err)
2624 goto out_err;
2625
2626 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2627 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2628 netdev, dst, next_hop,
2629 &pinfo) < 0)
2630 goto out;
2631
2632 path_idx++;
2633 }
2634
2635
2636 out:
2637 cb->args[1] = path_idx;
2638 err = skb->len;
2639 out_err:
2640 nl80211_finish_netdev_dump(dev);
2641 return err;
2642 }
2643
2644 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2645 {
2646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2647 int err;
2648 struct net_device *dev = info->user_ptr[1];
2649 struct mpath_info pinfo;
2650 struct sk_buff *msg;
2651 u8 *dst = NULL;
2652 u8 next_hop[ETH_ALEN];
2653
2654 memset(&pinfo, 0, sizeof(pinfo));
2655
2656 if (!info->attrs[NL80211_ATTR_MAC])
2657 return -EINVAL;
2658
2659 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2660
2661 if (!rdev->ops->get_mpath)
2662 return -EOPNOTSUPP;
2663
2664 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2665 return -EOPNOTSUPP;
2666
2667 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2668 if (err)
2669 return err;
2670
2671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 if (!msg)
2673 return -ENOMEM;
2674
2675 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2676 dev, dst, next_hop, &pinfo) < 0) {
2677 nlmsg_free(msg);
2678 return -ENOBUFS;
2679 }
2680
2681 return genlmsg_reply(msg, info);
2682 }
2683
2684 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2685 {
2686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2687 struct net_device *dev = info->user_ptr[1];
2688 u8 *dst = NULL;
2689 u8 *next_hop = NULL;
2690
2691 if (!info->attrs[NL80211_ATTR_MAC])
2692 return -EINVAL;
2693
2694 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2695 return -EINVAL;
2696
2697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2698 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2699
2700 if (!rdev->ops->change_mpath)
2701 return -EOPNOTSUPP;
2702
2703 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2704 return -EOPNOTSUPP;
2705
2706 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2707 }
2708
2709 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2710 {
2711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2712 struct net_device *dev = info->user_ptr[1];
2713 u8 *dst = NULL;
2714 u8 *next_hop = NULL;
2715
2716 if (!info->attrs[NL80211_ATTR_MAC])
2717 return -EINVAL;
2718
2719 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2720 return -EINVAL;
2721
2722 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2723 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2724
2725 if (!rdev->ops->add_mpath)
2726 return -EOPNOTSUPP;
2727
2728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2729 return -EOPNOTSUPP;
2730
2731 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2732 }
2733
2734 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2735 {
2736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2737 struct net_device *dev = info->user_ptr[1];
2738 u8 *dst = NULL;
2739
2740 if (info->attrs[NL80211_ATTR_MAC])
2741 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2742
2743 if (!rdev->ops->del_mpath)
2744 return -EOPNOTSUPP;
2745
2746 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2747 }
2748
2749 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2750 {
2751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2752 struct net_device *dev = info->user_ptr[1];
2753 struct bss_parameters params;
2754
2755 memset(&params, 0, sizeof(params));
2756 /* default to not changing parameters */
2757 params.use_cts_prot = -1;
2758 params.use_short_preamble = -1;
2759 params.use_short_slot_time = -1;
2760 params.ap_isolate = -1;
2761 params.ht_opmode = -1;
2762
2763 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2764 params.use_cts_prot =
2765 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2766 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2767 params.use_short_preamble =
2768 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2769 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2770 params.use_short_slot_time =
2771 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2772 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2773 params.basic_rates =
2774 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2775 params.basic_rates_len =
2776 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2777 }
2778 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2779 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2780 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2781 params.ht_opmode =
2782 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2783
2784 if (!rdev->ops->change_bss)
2785 return -EOPNOTSUPP;
2786
2787 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2788 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2789 return -EOPNOTSUPP;
2790
2791 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2792 }
2793
2794 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2795 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2796 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2797 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2798 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2799 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2800 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2801 };
2802
2803 static int parse_reg_rule(struct nlattr *tb[],
2804 struct ieee80211_reg_rule *reg_rule)
2805 {
2806 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2807 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2808
2809 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2810 return -EINVAL;
2811 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2812 return -EINVAL;
2813 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2814 return -EINVAL;
2815 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2816 return -EINVAL;
2817 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2818 return -EINVAL;
2819
2820 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2821
2822 freq_range->start_freq_khz =
2823 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2824 freq_range->end_freq_khz =
2825 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2826 freq_range->max_bandwidth_khz =
2827 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2828
2829 power_rule->max_eirp =
2830 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2831
2832 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2833 power_rule->max_antenna_gain =
2834 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2835
2836 return 0;
2837 }
2838
2839 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2840 {
2841 int r;
2842 char *data = NULL;
2843
2844 /*
2845 * You should only get this when cfg80211 hasn't yet initialized
2846 * completely when built-in to the kernel right between the time
2847 * window between nl80211_init() and regulatory_init(), if that is
2848 * even possible.
2849 */
2850 mutex_lock(&cfg80211_mutex);
2851 if (unlikely(!cfg80211_regdomain)) {
2852 mutex_unlock(&cfg80211_mutex);
2853 return -EINPROGRESS;
2854 }
2855 mutex_unlock(&cfg80211_mutex);
2856
2857 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2858 return -EINVAL;
2859
2860 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2861
2862 r = regulatory_hint_user(data);
2863
2864 return r;
2865 }
2866
2867 static int nl80211_get_mesh_config(struct sk_buff *skb,
2868 struct genl_info *info)
2869 {
2870 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2871 struct net_device *dev = info->user_ptr[1];
2872 struct wireless_dev *wdev = dev->ieee80211_ptr;
2873 struct mesh_config cur_params;
2874 int err = 0;
2875 void *hdr;
2876 struct nlattr *pinfoattr;
2877 struct sk_buff *msg;
2878
2879 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2880 return -EOPNOTSUPP;
2881
2882 if (!rdev->ops->get_mesh_config)
2883 return -EOPNOTSUPP;
2884
2885 wdev_lock(wdev);
2886 /* If not connected, get default parameters */
2887 if (!wdev->mesh_id_len)
2888 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2889 else
2890 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2891 &cur_params);
2892 wdev_unlock(wdev);
2893
2894 if (err)
2895 return err;
2896
2897 /* Draw up a netlink message to send back */
2898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2899 if (!msg)
2900 return -ENOMEM;
2901 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2902 NL80211_CMD_GET_MESH_CONFIG);
2903 if (!hdr)
2904 goto out;
2905 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2906 if (!pinfoattr)
2907 goto nla_put_failure;
2908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2909 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2910 cur_params.dot11MeshRetryTimeout);
2911 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2912 cur_params.dot11MeshConfirmTimeout);
2913 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2914 cur_params.dot11MeshHoldingTimeout);
2915 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2916 cur_params.dot11MeshMaxPeerLinks);
2917 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2918 cur_params.dot11MeshMaxRetries);
2919 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2920 cur_params.dot11MeshTTL);
2921 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2922 cur_params.element_ttl);
2923 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2924 cur_params.auto_open_plinks);
2925 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2926 cur_params.dot11MeshHWMPmaxPREQretries);
2927 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2928 cur_params.path_refresh_time);
2929 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2930 cur_params.min_discovery_timeout);
2931 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2932 cur_params.dot11MeshHWMPactivePathTimeout);
2933 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2934 cur_params.dot11MeshHWMPpreqMinInterval);
2935 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2936 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2937 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2938 cur_params.dot11MeshHWMPRootMode);
2939 nla_nest_end(msg, pinfoattr);
2940 genlmsg_end(msg, hdr);
2941 return genlmsg_reply(msg, info);
2942
2943 nla_put_failure:
2944 genlmsg_cancel(msg, hdr);
2945 out:
2946 nlmsg_free(msg);
2947 return -ENOBUFS;
2948 }
2949
2950 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2951 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2952 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2953 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2954 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2955 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2956 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2957 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2958 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2959
2960 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2961 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2962 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2963 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2964 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2965 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2966 };
2967
2968 static const struct nla_policy
2969 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2970 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2971 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2972 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
2973 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
2974 .len = IEEE80211_MAX_DATA_LEN },
2975 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
2976 };
2977
2978 static int nl80211_parse_mesh_config(struct genl_info *info,
2979 struct mesh_config *cfg,
2980 u32 *mask_out)
2981 {
2982 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2983 u32 mask = 0;
2984
2985 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2986 do {\
2987 if (table[attr_num]) {\
2988 cfg->param = nla_fn(table[attr_num]); \
2989 mask |= (1 << (attr_num - 1)); \
2990 } \
2991 } while (0);\
2992
2993
2994 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2995 return -EINVAL;
2996 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2997 info->attrs[NL80211_ATTR_MESH_CONFIG],
2998 nl80211_meshconf_params_policy))
2999 return -EINVAL;
3000
3001 /* This makes sure that there aren't more than 32 mesh config
3002 * parameters (otherwise our bitfield scheme would not work.) */
3003 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3004
3005 /* Fill in the params struct */
3006 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3007 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3009 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3011 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3012 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3013 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3015 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3016 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3017 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3019 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3021 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3022 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3023 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3024 nla_get_u8);
3025 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3026 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3028 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3029 nla_get_u16);
3030 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3031 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3032 nla_get_u32);
3033 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3034 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3035 nla_get_u16);
3036 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3037 dot11MeshHWMPnetDiameterTraversalTime,
3038 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3039 nla_get_u16);
3040 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3041 dot11MeshHWMPRootMode, mask,
3042 NL80211_MESHCONF_HWMP_ROOTMODE,
3043 nla_get_u8);
3044 if (mask_out)
3045 *mask_out = mask;
3046
3047 return 0;
3048
3049 #undef FILL_IN_MESH_PARAM_IF_SET
3050 }
3051
3052 static int nl80211_parse_mesh_setup(struct genl_info *info,
3053 struct mesh_setup *setup)
3054 {
3055 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3056
3057 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3058 return -EINVAL;
3059 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3060 info->attrs[NL80211_ATTR_MESH_SETUP],
3061 nl80211_mesh_setup_params_policy))
3062 return -EINVAL;
3063
3064 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3065 setup->path_sel_proto =
3066 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3067 IEEE80211_PATH_PROTOCOL_VENDOR :
3068 IEEE80211_PATH_PROTOCOL_HWMP;
3069
3070 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3071 setup->path_metric =
3072 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3073 IEEE80211_PATH_METRIC_VENDOR :
3074 IEEE80211_PATH_METRIC_AIRTIME;
3075
3076
3077 if (tb[NL80211_MESH_SETUP_IE]) {
3078 struct nlattr *ieattr =
3079 tb[NL80211_MESH_SETUP_IE];
3080 if (!is_valid_ie_attr(ieattr))
3081 return -EINVAL;
3082 setup->ie = nla_data(ieattr);
3083 setup->ie_len = nla_len(ieattr);
3084 }
3085 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3086 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3087
3088 return 0;
3089 }
3090
3091 static int nl80211_update_mesh_config(struct sk_buff *skb,
3092 struct genl_info *info)
3093 {
3094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3095 struct net_device *dev = info->user_ptr[1];
3096 struct wireless_dev *wdev = dev->ieee80211_ptr;
3097 struct mesh_config cfg;
3098 u32 mask;
3099 int err;
3100
3101 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3102 return -EOPNOTSUPP;
3103
3104 if (!rdev->ops->update_mesh_config)
3105 return -EOPNOTSUPP;
3106
3107 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3108 if (err)
3109 return err;
3110
3111 wdev_lock(wdev);
3112 if (!wdev->mesh_id_len)
3113 err = -ENOLINK;
3114
3115 if (!err)
3116 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3117 mask, &cfg);
3118
3119 wdev_unlock(wdev);
3120
3121 return err;
3122 }
3123
3124 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3125 {
3126 struct sk_buff *msg;
3127 void *hdr = NULL;
3128 struct nlattr *nl_reg_rules;
3129 unsigned int i;
3130 int err = -EINVAL;
3131
3132 mutex_lock(&cfg80211_mutex);
3133
3134 if (!cfg80211_regdomain)
3135 goto out;
3136
3137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3138 if (!msg) {
3139 err = -ENOBUFS;
3140 goto out;
3141 }
3142
3143 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3144 NL80211_CMD_GET_REG);
3145 if (!hdr)
3146 goto put_failure;
3147
3148 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3149 cfg80211_regdomain->alpha2);
3150
3151 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3152 if (!nl_reg_rules)
3153 goto nla_put_failure;
3154
3155 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3156 struct nlattr *nl_reg_rule;
3157 const struct ieee80211_reg_rule *reg_rule;
3158 const struct ieee80211_freq_range *freq_range;
3159 const struct ieee80211_power_rule *power_rule;
3160
3161 reg_rule = &cfg80211_regdomain->reg_rules[i];
3162 freq_range = &reg_rule->freq_range;
3163 power_rule = &reg_rule->power_rule;
3164
3165 nl_reg_rule = nla_nest_start(msg, i);
3166 if (!nl_reg_rule)
3167 goto nla_put_failure;
3168
3169 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3170 reg_rule->flags);
3171 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3172 freq_range->start_freq_khz);
3173 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3174 freq_range->end_freq_khz);
3175 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3176 freq_range->max_bandwidth_khz);
3177 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3178 power_rule->max_antenna_gain);
3179 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3180 power_rule->max_eirp);
3181
3182 nla_nest_end(msg, nl_reg_rule);
3183 }
3184
3185 nla_nest_end(msg, nl_reg_rules);
3186
3187 genlmsg_end(msg, hdr);
3188 err = genlmsg_reply(msg, info);
3189 goto out;
3190
3191 nla_put_failure:
3192 genlmsg_cancel(msg, hdr);
3193 put_failure:
3194 nlmsg_free(msg);
3195 err = -EMSGSIZE;
3196 out:
3197 mutex_unlock(&cfg80211_mutex);
3198 return err;
3199 }
3200
3201 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3202 {
3203 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3204 struct nlattr *nl_reg_rule;
3205 char *alpha2 = NULL;
3206 int rem_reg_rules = 0, r = 0;
3207 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3208 struct ieee80211_regdomain *rd = NULL;
3209
3210 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3211 return -EINVAL;
3212
3213 if (!info->attrs[NL80211_ATTR_REG_RULES])
3214 return -EINVAL;
3215
3216 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3217
3218 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3219 rem_reg_rules) {
3220 num_rules++;
3221 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3222 return -EINVAL;
3223 }
3224
3225 mutex_lock(&cfg80211_mutex);
3226
3227 if (!reg_is_valid_request(alpha2)) {
3228 r = -EINVAL;
3229 goto bad_reg;
3230 }
3231
3232 size_of_regd = sizeof(struct ieee80211_regdomain) +
3233 (num_rules * sizeof(struct ieee80211_reg_rule));
3234
3235 rd = kzalloc(size_of_regd, GFP_KERNEL);
3236 if (!rd) {
3237 r = -ENOMEM;
3238 goto bad_reg;
3239 }
3240
3241 rd->n_reg_rules = num_rules;
3242 rd->alpha2[0] = alpha2[0];
3243 rd->alpha2[1] = alpha2[1];
3244
3245 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3246 rem_reg_rules) {
3247 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3248 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3249 reg_rule_policy);
3250 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3251 if (r)
3252 goto bad_reg;
3253
3254 rule_idx++;
3255
3256 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3257 r = -EINVAL;
3258 goto bad_reg;
3259 }
3260 }
3261
3262 BUG_ON(rule_idx != num_rules);
3263
3264 r = set_regdom(rd);
3265
3266 mutex_unlock(&cfg80211_mutex);
3267
3268 return r;
3269
3270 bad_reg:
3271 mutex_unlock(&cfg80211_mutex);
3272 kfree(rd);
3273 return r;
3274 }
3275
3276 static int validate_scan_freqs(struct nlattr *freqs)
3277 {
3278 struct nlattr *attr1, *attr2;
3279 int n_channels = 0, tmp1, tmp2;
3280
3281 nla_for_each_nested(attr1, freqs, tmp1) {
3282 n_channels++;
3283 /*
3284 * Some hardware has a limited channel list for
3285 * scanning, and it is pretty much nonsensical
3286 * to scan for a channel twice, so disallow that
3287 * and don't require drivers to check that the
3288 * channel list they get isn't longer than what
3289 * they can scan, as long as they can scan all
3290 * the channels they registered at once.
3291 */
3292 nla_for_each_nested(attr2, freqs, tmp2)
3293 if (attr1 != attr2 &&
3294 nla_get_u32(attr1) == nla_get_u32(attr2))
3295 return 0;
3296 }
3297
3298 return n_channels;
3299 }
3300
3301 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3302 {
3303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3304 struct net_device *dev = info->user_ptr[1];
3305 struct cfg80211_scan_request *request;
3306 struct nlattr *attr;
3307 struct wiphy *wiphy;
3308 int err, tmp, n_ssids = 0, n_channels, i;
3309 enum ieee80211_band band;
3310 size_t ie_len;
3311
3312 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3313 return -EINVAL;
3314
3315 wiphy = &rdev->wiphy;
3316
3317 if (!rdev->ops->scan)
3318 return -EOPNOTSUPP;
3319
3320 if (rdev->scan_req)
3321 return -EBUSY;
3322
3323 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3324 n_channels = validate_scan_freqs(
3325 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3326 if (!n_channels)
3327 return -EINVAL;
3328 } else {
3329 n_channels = 0;
3330
3331 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3332 if (wiphy->bands[band])
3333 n_channels += wiphy->bands[band]->n_channels;
3334 }
3335
3336 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3337 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3338 n_ssids++;
3339
3340 if (n_ssids > wiphy->max_scan_ssids)
3341 return -EINVAL;
3342
3343 if (info->attrs[NL80211_ATTR_IE])
3344 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3345 else
3346 ie_len = 0;
3347
3348 if (ie_len > wiphy->max_scan_ie_len)
3349 return -EINVAL;
3350
3351 request = kzalloc(sizeof(*request)
3352 + sizeof(*request->ssids) * n_ssids
3353 + sizeof(*request->channels) * n_channels
3354 + ie_len, GFP_KERNEL);
3355 if (!request)
3356 return -ENOMEM;
3357
3358 if (n_ssids)
3359 request->ssids = (void *)&request->channels[n_channels];
3360 request->n_ssids = n_ssids;
3361 if (ie_len) {
3362 if (request->ssids)
3363 request->ie = (void *)(request->ssids + n_ssids);
3364 else
3365 request->ie = (void *)(request->channels + n_channels);
3366 }
3367
3368 i = 0;
3369 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3370 /* user specified, bail out if channel not found */
3371 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3372 struct ieee80211_channel *chan;
3373
3374 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3375
3376 if (!chan) {
3377 err = -EINVAL;
3378 goto out_free;
3379 }
3380
3381 /* ignore disabled channels */
3382 if (chan->flags & IEEE80211_CHAN_DISABLED)
3383 continue;
3384
3385 request->channels[i] = chan;
3386 i++;
3387 }
3388 } else {
3389 /* all channels */
3390 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3391 int j;
3392 if (!wiphy->bands[band])
3393 continue;
3394 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3395 struct ieee80211_channel *chan;
3396
3397 chan = &wiphy->bands[band]->channels[j];
3398
3399 if (chan->flags & IEEE80211_CHAN_DISABLED)
3400 continue;
3401
3402 request->channels[i] = chan;
3403 i++;
3404 }
3405 }
3406 }
3407
3408 if (!i) {
3409 err = -EINVAL;
3410 goto out_free;
3411 }
3412
3413 request->n_channels = i;
3414
3415 i = 0;
3416 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3417 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3418 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3419 err = -EINVAL;
3420 goto out_free;
3421 }
3422 request->ssids[i].ssid_len = nla_len(attr);
3423 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3424 i++;
3425 }
3426 }
3427
3428 if (info->attrs[NL80211_ATTR_IE]) {
3429 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3430 memcpy((void *)request->ie,
3431 nla_data(info->attrs[NL80211_ATTR_IE]),
3432 request->ie_len);
3433 }
3434
3435 request->dev = dev;
3436 request->wiphy = &rdev->wiphy;
3437
3438 rdev->scan_req = request;
3439 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3440
3441 if (!err) {
3442 nl80211_send_scan_start(rdev, dev);
3443 dev_hold(dev);
3444 } else {
3445 out_free:
3446 rdev->scan_req = NULL;
3447 kfree(request);
3448 }
3449
3450 return err;
3451 }
3452
3453 static int nl80211_start_sched_scan(struct sk_buff *skb,
3454 struct genl_info *info)
3455 {
3456 struct cfg80211_sched_scan_request *request;
3457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3458 struct net_device *dev = info->user_ptr[1];
3459 struct nlattr *attr;
3460 struct wiphy *wiphy;
3461 int err, tmp, n_ssids = 0, n_channels, i;
3462 u32 interval;
3463 enum ieee80211_band band;
3464 size_t ie_len;
3465
3466 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3467 !rdev->ops->sched_scan_start)
3468 return -EOPNOTSUPP;
3469
3470 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3471 return -EINVAL;
3472
3473 if (rdev->sched_scan_req)
3474 return -EINPROGRESS;
3475
3476 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3477 return -EINVAL;
3478
3479 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3480 if (interval == 0)
3481 return -EINVAL;
3482
3483 wiphy = &rdev->wiphy;
3484
3485 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3486 n_channels = validate_scan_freqs(
3487 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3488 if (!n_channels)
3489 return -EINVAL;
3490 } else {
3491 n_channels = 0;
3492
3493 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3494 if (wiphy->bands[band])
3495 n_channels += wiphy->bands[band]->n_channels;
3496 }
3497
3498 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3499 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3500 tmp)
3501 n_ssids++;
3502
3503 if (n_ssids > wiphy->max_scan_ssids)
3504 return -EINVAL;
3505
3506 if (info->attrs[NL80211_ATTR_IE])
3507 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3508 else
3509 ie_len = 0;
3510
3511 if (ie_len > wiphy->max_scan_ie_len)
3512 return -EINVAL;
3513
3514 request = kzalloc(sizeof(*request)
3515 + sizeof(*request->ssids) * n_ssids
3516 + sizeof(*request->channels) * n_channels
3517 + ie_len, GFP_KERNEL);
3518 if (!request)
3519 return -ENOMEM;
3520
3521 if (n_ssids)
3522 request->ssids = (void *)&request->channels[n_channels];
3523 request->n_ssids = n_ssids;
3524 if (ie_len) {
3525 if (request->ssids)
3526 request->ie = (void *)(request->ssids + n_ssids);
3527 else
3528 request->ie = (void *)(request->channels + n_channels);
3529 }
3530
3531 i = 0;
3532 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3533 /* user specified, bail out if channel not found */
3534 nla_for_each_nested(attr,
3535 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3536 tmp) {
3537 struct ieee80211_channel *chan;
3538
3539 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3540
3541 if (!chan) {
3542 err = -EINVAL;
3543 goto out_free;
3544 }
3545
3546 /* ignore disabled channels */
3547 if (chan->flags & IEEE80211_CHAN_DISABLED)
3548 continue;
3549
3550 request->channels[i] = chan;
3551 i++;
3552 }
3553 } else {
3554 /* all channels */
3555 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3556 int j;
3557 if (!wiphy->bands[band])
3558 continue;
3559 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3560 struct ieee80211_channel *chan;
3561
3562 chan = &wiphy->bands[band]->channels[j];
3563
3564 if (chan->flags & IEEE80211_CHAN_DISABLED)
3565 continue;
3566
3567 request->channels[i] = chan;
3568 i++;
3569 }
3570 }
3571 }
3572
3573 if (!i) {
3574 err = -EINVAL;
3575 goto out_free;
3576 }
3577
3578 request->n_channels = i;
3579
3580 i = 0;
3581 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3582 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3583 tmp) {
3584 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3585 err = -EINVAL;
3586 goto out_free;
3587 }
3588 request->ssids[i].ssid_len = nla_len(attr);
3589 memcpy(request->ssids[i].ssid, nla_data(attr),
3590 nla_len(attr));
3591 i++;
3592 }
3593 }
3594
3595 if (info->attrs[NL80211_ATTR_IE]) {
3596 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3597 memcpy((void *)request->ie,
3598 nla_data(info->attrs[NL80211_ATTR_IE]),
3599 request->ie_len);
3600 }
3601
3602 request->dev = dev;
3603 request->wiphy = &rdev->wiphy;
3604 request->interval = interval;
3605
3606 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3607 if (!err) {
3608 rdev->sched_scan_req = request;
3609 nl80211_send_sched_scan(rdev, dev,
3610 NL80211_CMD_START_SCHED_SCAN);
3611 goto out;
3612 }
3613
3614 out_free:
3615 kfree(request);
3616 out:
3617 return err;
3618 }
3619
3620 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3621 struct genl_info *info)
3622 {
3623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3624
3625 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3626 !rdev->ops->sched_scan_stop)
3627 return -EOPNOTSUPP;
3628
3629 return __cfg80211_stop_sched_scan(rdev, false);
3630 }
3631
3632 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3633 u32 seq, int flags,
3634 struct cfg80211_registered_device *rdev,
3635 struct wireless_dev *wdev,
3636 struct cfg80211_internal_bss *intbss)
3637 {
3638 struct cfg80211_bss *res = &intbss->pub;
3639 void *hdr;
3640 struct nlattr *bss;
3641 int i;
3642
3643 ASSERT_WDEV_LOCK(wdev);
3644
3645 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3646 NL80211_CMD_NEW_SCAN_RESULTS);
3647 if (!hdr)
3648 return -1;
3649
3650 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3651
3652 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3653 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3654
3655 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3656 if (!bss)
3657 goto nla_put_failure;
3658 if (!is_zero_ether_addr(res->bssid))
3659 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3660 if (res->information_elements && res->len_information_elements)
3661 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3662 res->len_information_elements,
3663 res->information_elements);
3664 if (res->beacon_ies && res->len_beacon_ies &&
3665 res->beacon_ies != res->information_elements)
3666 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3667 res->len_beacon_ies, res->beacon_ies);
3668 if (res->tsf)
3669 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3670 if (res->beacon_interval)
3671 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3672 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3673 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3674 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3675 jiffies_to_msecs(jiffies - intbss->ts));
3676
3677 switch (rdev->wiphy.signal_type) {
3678 case CFG80211_SIGNAL_TYPE_MBM:
3679 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3680 break;
3681 case CFG80211_SIGNAL_TYPE_UNSPEC:
3682 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3683 break;
3684 default:
3685 break;
3686 }
3687
3688 switch (wdev->iftype) {
3689 case NL80211_IFTYPE_P2P_CLIENT:
3690 case NL80211_IFTYPE_STATION:
3691 if (intbss == wdev->current_bss)
3692 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3693 NL80211_BSS_STATUS_ASSOCIATED);
3694 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3695 if (intbss != wdev->auth_bsses[i])
3696 continue;
3697 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3698 NL80211_BSS_STATUS_AUTHENTICATED);
3699 break;
3700 }
3701 break;
3702 case NL80211_IFTYPE_ADHOC:
3703 if (intbss == wdev->current_bss)
3704 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3705 NL80211_BSS_STATUS_IBSS_JOINED);
3706 break;
3707 default:
3708 break;
3709 }
3710
3711 nla_nest_end(msg, bss);
3712
3713 return genlmsg_end(msg, hdr);
3714
3715 nla_put_failure:
3716 genlmsg_cancel(msg, hdr);
3717 return -EMSGSIZE;
3718 }
3719
3720 static int nl80211_dump_scan(struct sk_buff *skb,
3721 struct netlink_callback *cb)
3722 {
3723 struct cfg80211_registered_device *rdev;
3724 struct net_device *dev;
3725 struct cfg80211_internal_bss *scan;
3726 struct wireless_dev *wdev;
3727 int start = cb->args[1], idx = 0;
3728 int err;
3729
3730 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3731 if (err)
3732 return err;
3733
3734 wdev = dev->ieee80211_ptr;
3735
3736 wdev_lock(wdev);
3737 spin_lock_bh(&rdev->bss_lock);
3738 cfg80211_bss_expire(rdev);
3739
3740 cb->seq = rdev->bss_generation;
3741
3742 list_for_each_entry(scan, &rdev->bss_list, list) {
3743 if (++idx <= start)
3744 continue;
3745 if (nl80211_send_bss(skb, cb,
3746 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3747 rdev, wdev, scan) < 0) {
3748 idx--;
3749 break;
3750 }
3751 }
3752
3753 spin_unlock_bh(&rdev->bss_lock);
3754 wdev_unlock(wdev);
3755
3756 cb->args[1] = idx;
3757 nl80211_finish_netdev_dump(rdev);
3758
3759 return skb->len;
3760 }
3761
3762 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3763 int flags, struct net_device *dev,
3764 struct survey_info *survey)
3765 {
3766 void *hdr;
3767 struct nlattr *infoattr;
3768
3769 hdr = nl80211hdr_put(msg, pid, seq, flags,
3770 NL80211_CMD_NEW_SURVEY_RESULTS);
3771 if (!hdr)
3772 return -ENOMEM;
3773
3774 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3775
3776 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3777 if (!infoattr)
3778 goto nla_put_failure;
3779
3780 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3781 survey->channel->center_freq);
3782 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3783 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3784 survey->noise);
3785 if (survey->filled & SURVEY_INFO_IN_USE)
3786 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3787 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3788 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3789 survey->channel_time);
3790 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3791 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3792 survey->channel_time_busy);
3793 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3794 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3795 survey->channel_time_ext_busy);
3796 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3797 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3798 survey->channel_time_rx);
3799 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3800 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3801 survey->channel_time_tx);
3802
3803 nla_nest_end(msg, infoattr);
3804
3805 return genlmsg_end(msg, hdr);
3806
3807 nla_put_failure:
3808 genlmsg_cancel(msg, hdr);
3809 return -EMSGSIZE;
3810 }
3811
3812 static int nl80211_dump_survey(struct sk_buff *skb,
3813 struct netlink_callback *cb)
3814 {
3815 struct survey_info survey;
3816 struct cfg80211_registered_device *dev;
3817 struct net_device *netdev;
3818 int survey_idx = cb->args[1];
3819 int res;
3820
3821 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3822 if (res)
3823 return res;
3824
3825 if (!dev->ops->dump_survey) {
3826 res = -EOPNOTSUPP;
3827 goto out_err;
3828 }
3829
3830 while (1) {
3831 struct ieee80211_channel *chan;
3832
3833 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3834 &survey);
3835 if (res == -ENOENT)
3836 break;
3837 if (res)
3838 goto out_err;
3839
3840 /* Survey without a channel doesn't make sense */
3841 if (!survey.channel) {
3842 res = -EINVAL;
3843 goto out;
3844 }
3845
3846 chan = ieee80211_get_channel(&dev->wiphy,
3847 survey.channel->center_freq);
3848 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
3849 survey_idx++;
3850 continue;
3851 }
3852
3853 if (nl80211_send_survey(skb,
3854 NETLINK_CB(cb->skb).pid,
3855 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3856 netdev,
3857 &survey) < 0)
3858 goto out;
3859 survey_idx++;
3860 }
3861
3862 out:
3863 cb->args[1] = survey_idx;
3864 res = skb->len;
3865 out_err:
3866 nl80211_finish_netdev_dump(dev);
3867 return res;
3868 }
3869
3870 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3871 {
3872 return auth_type <= NL80211_AUTHTYPE_MAX;
3873 }
3874
3875 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3876 {
3877 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3878 NL80211_WPA_VERSION_2));
3879 }
3880
3881 static bool nl80211_valid_akm_suite(u32 akm)
3882 {
3883 return akm == WLAN_AKM_SUITE_8021X ||
3884 akm == WLAN_AKM_SUITE_PSK;
3885 }
3886
3887 static bool nl80211_valid_cipher_suite(u32 cipher)
3888 {
3889 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3890 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3891 cipher == WLAN_CIPHER_SUITE_TKIP ||
3892 cipher == WLAN_CIPHER_SUITE_CCMP ||
3893 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3894 }
3895
3896
3897 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3898 {
3899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3900 struct net_device *dev = info->user_ptr[1];
3901 struct ieee80211_channel *chan;
3902 const u8 *bssid, *ssid, *ie = NULL;
3903 int err, ssid_len, ie_len = 0;
3904 enum nl80211_auth_type auth_type;
3905 struct key_parse key;
3906 bool local_state_change;
3907
3908 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3909 return -EINVAL;
3910
3911 if (!info->attrs[NL80211_ATTR_MAC])
3912 return -EINVAL;
3913
3914 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3915 return -EINVAL;
3916
3917 if (!info->attrs[NL80211_ATTR_SSID])
3918 return -EINVAL;
3919
3920 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3921 return -EINVAL;
3922
3923 err = nl80211_parse_key(info, &key);
3924 if (err)
3925 return err;
3926
3927 if (key.idx >= 0) {
3928 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3929 return -EINVAL;
3930 if (!key.p.key || !key.p.key_len)
3931 return -EINVAL;
3932 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3933 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3934 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3935 key.p.key_len != WLAN_KEY_LEN_WEP104))
3936 return -EINVAL;
3937 if (key.idx > 4)
3938 return -EINVAL;
3939 } else {
3940 key.p.key_len = 0;
3941 key.p.key = NULL;
3942 }
3943
3944 if (key.idx >= 0) {
3945 int i;
3946 bool ok = false;
3947 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3948 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3949 ok = true;
3950 break;
3951 }
3952 }
3953 if (!ok)
3954 return -EINVAL;
3955 }
3956
3957 if (!rdev->ops->auth)
3958 return -EOPNOTSUPP;
3959
3960 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3961 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3962 return -EOPNOTSUPP;
3963
3964 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3965 chan = ieee80211_get_channel(&rdev->wiphy,
3966 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3967 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3968 return -EINVAL;
3969
3970 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3971 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3972
3973 if (info->attrs[NL80211_ATTR_IE]) {
3974 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3975 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3976 }
3977
3978 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3979 if (!nl80211_valid_auth_type(auth_type))
3980 return -EINVAL;
3981
3982 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3983
3984 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3985 ssid, ssid_len, ie, ie_len,
3986 key.p.key, key.p.key_len, key.idx,
3987 local_state_change);
3988 }
3989
3990 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3991 struct genl_info *info,
3992 struct cfg80211_crypto_settings *settings,
3993 int cipher_limit)
3994 {
3995 memset(settings, 0, sizeof(*settings));
3996
3997 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3998
3999 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4000 u16 proto;
4001 proto = nla_get_u16(
4002 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4003 settings->control_port_ethertype = cpu_to_be16(proto);
4004 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4005 proto != ETH_P_PAE)
4006 return -EINVAL;
4007 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4008 settings->control_port_no_encrypt = true;
4009 } else
4010 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4011
4012 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4013 void *data;
4014 int len, i;
4015
4016 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4017 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4018 settings->n_ciphers_pairwise = len / sizeof(u32);
4019
4020 if (len % sizeof(u32))
4021 return -EINVAL;
4022
4023 if (settings->n_ciphers_pairwise > cipher_limit)
4024 return -EINVAL;
4025
4026 memcpy(settings->ciphers_pairwise, data, len);
4027
4028 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4029 if (!nl80211_valid_cipher_suite(
4030 settings->ciphers_pairwise[i]))
4031 return -EINVAL;
4032 }
4033
4034 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4035 settings->cipher_group =
4036 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4037 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4038 return -EINVAL;
4039 }
4040
4041 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4042 settings->wpa_versions =
4043 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4044 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4045 return -EINVAL;
4046 }
4047
4048 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4049 void *data;
4050 int len, i;
4051
4052 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4053 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4054 settings->n_akm_suites = len / sizeof(u32);
4055
4056 if (len % sizeof(u32))
4057 return -EINVAL;
4058
4059 memcpy(settings->akm_suites, data, len);
4060
4061 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4062 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4063 return -EINVAL;
4064 }
4065
4066 return 0;
4067 }
4068
4069 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4070 {
4071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4072 struct net_device *dev = info->user_ptr[1];
4073 struct cfg80211_crypto_settings crypto;
4074 struct ieee80211_channel *chan;
4075 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4076 int err, ssid_len, ie_len = 0;
4077 bool use_mfp = false;
4078
4079 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4080 return -EINVAL;
4081
4082 if (!info->attrs[NL80211_ATTR_MAC] ||
4083 !info->attrs[NL80211_ATTR_SSID] ||
4084 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4085 return -EINVAL;
4086
4087 if (!rdev->ops->assoc)
4088 return -EOPNOTSUPP;
4089
4090 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4091 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4092 return -EOPNOTSUPP;
4093
4094 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4095
4096 chan = ieee80211_get_channel(&rdev->wiphy,
4097 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4098 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4099 return -EINVAL;
4100
4101 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4102 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4103
4104 if (info->attrs[NL80211_ATTR_IE]) {
4105 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4106 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4107 }
4108
4109 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4110 enum nl80211_mfp mfp =
4111 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4112 if (mfp == NL80211_MFP_REQUIRED)
4113 use_mfp = true;
4114 else if (mfp != NL80211_MFP_NO)
4115 return -EINVAL;
4116 }
4117
4118 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4119 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4120
4121 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4122 if (!err)
4123 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4124 ssid, ssid_len, ie, ie_len, use_mfp,
4125 &crypto);
4126
4127 return err;
4128 }
4129
4130 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4131 {
4132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4133 struct net_device *dev = info->user_ptr[1];
4134 const u8 *ie = NULL, *bssid;
4135 int ie_len = 0;
4136 u16 reason_code;
4137 bool local_state_change;
4138
4139 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4140 return -EINVAL;
4141
4142 if (!info->attrs[NL80211_ATTR_MAC])
4143 return -EINVAL;
4144
4145 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4146 return -EINVAL;
4147
4148 if (!rdev->ops->deauth)
4149 return -EOPNOTSUPP;
4150
4151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4153 return -EOPNOTSUPP;
4154
4155 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4156
4157 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4158 if (reason_code == 0) {
4159 /* Reason Code 0 is reserved */
4160 return -EINVAL;
4161 }
4162
4163 if (info->attrs[NL80211_ATTR_IE]) {
4164 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4165 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4166 }
4167
4168 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4169
4170 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4171 local_state_change);
4172 }
4173
4174 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4175 {
4176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4177 struct net_device *dev = info->user_ptr[1];
4178 const u8 *ie = NULL, *bssid;
4179 int ie_len = 0;
4180 u16 reason_code;
4181 bool local_state_change;
4182
4183 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4184 return -EINVAL;
4185
4186 if (!info->attrs[NL80211_ATTR_MAC])
4187 return -EINVAL;
4188
4189 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4190 return -EINVAL;
4191
4192 if (!rdev->ops->disassoc)
4193 return -EOPNOTSUPP;
4194
4195 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4197 return -EOPNOTSUPP;
4198
4199 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4200
4201 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4202 if (reason_code == 0) {
4203 /* Reason Code 0 is reserved */
4204 return -EINVAL;
4205 }
4206
4207 if (info->attrs[NL80211_ATTR_IE]) {
4208 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4209 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4210 }
4211
4212 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4213
4214 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4215 local_state_change);
4216 }
4217
4218 static bool
4219 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4220 int mcast_rate[IEEE80211_NUM_BANDS],
4221 int rateval)
4222 {
4223 struct wiphy *wiphy = &rdev->wiphy;
4224 bool found = false;
4225 int band, i;
4226
4227 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4228 struct ieee80211_supported_band *sband;
4229
4230 sband = wiphy->bands[band];
4231 if (!sband)
4232 continue;
4233
4234 for (i = 0; i < sband->n_bitrates; i++) {
4235 if (sband->bitrates[i].bitrate == rateval) {
4236 mcast_rate[band] = i + 1;
4237 found = true;
4238 break;
4239 }
4240 }
4241 }
4242
4243 return found;
4244 }
4245
4246 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4247 {
4248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4249 struct net_device *dev = info->user_ptr[1];
4250 struct cfg80211_ibss_params ibss;
4251 struct wiphy *wiphy;
4252 struct cfg80211_cached_keys *connkeys = NULL;
4253 int err;
4254
4255 memset(&ibss, 0, sizeof(ibss));
4256
4257 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4258 return -EINVAL;
4259
4260 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4261 !info->attrs[NL80211_ATTR_SSID] ||
4262 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4263 return -EINVAL;
4264
4265 ibss.beacon_interval = 100;
4266
4267 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4268 ibss.beacon_interval =
4269 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4270 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4271 return -EINVAL;
4272 }
4273
4274 if (!rdev->ops->join_ibss)
4275 return -EOPNOTSUPP;
4276
4277 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4278 return -EOPNOTSUPP;
4279
4280 wiphy = &rdev->wiphy;
4281
4282 if (info->attrs[NL80211_ATTR_MAC])
4283 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4284 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4285 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4286
4287 if (info->attrs[NL80211_ATTR_IE]) {
4288 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4289 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4290 }
4291
4292 ibss.channel = ieee80211_get_channel(wiphy,
4293 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4294 if (!ibss.channel ||
4295 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4296 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4297 return -EINVAL;
4298
4299 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4300 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4301
4302 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4303 u8 *rates =
4304 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4305 int n_rates =
4306 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4307 struct ieee80211_supported_band *sband =
4308 wiphy->bands[ibss.channel->band];
4309 int i, j;
4310
4311 if (n_rates == 0)
4312 return -EINVAL;
4313
4314 for (i = 0; i < n_rates; i++) {
4315 int rate = (rates[i] & 0x7f) * 5;
4316 bool found = false;
4317
4318 for (j = 0; j < sband->n_bitrates; j++) {
4319 if (sband->bitrates[j].bitrate == rate) {
4320 found = true;
4321 ibss.basic_rates |= BIT(j);
4322 break;
4323 }
4324 }
4325 if (!found)
4326 return -EINVAL;
4327 }
4328 }
4329
4330 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4331 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4332 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4333 return -EINVAL;
4334
4335 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4336 connkeys = nl80211_parse_connkeys(rdev,
4337 info->attrs[NL80211_ATTR_KEYS]);
4338 if (IS_ERR(connkeys))
4339 return PTR_ERR(connkeys);
4340 }
4341
4342 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4343 if (err)
4344 kfree(connkeys);
4345 return err;
4346 }
4347
4348 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4349 {
4350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4351 struct net_device *dev = info->user_ptr[1];
4352
4353 if (!rdev->ops->leave_ibss)
4354 return -EOPNOTSUPP;
4355
4356 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4357 return -EOPNOTSUPP;
4358
4359 return cfg80211_leave_ibss(rdev, dev, false);
4360 }
4361
4362 #ifdef CONFIG_NL80211_TESTMODE
4363 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4364 .name = "testmode",
4365 };
4366
4367 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4368 {
4369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4370 int err;
4371
4372 if (!info->attrs[NL80211_ATTR_TESTDATA])
4373 return -EINVAL;
4374
4375 err = -EOPNOTSUPP;
4376 if (rdev->ops->testmode_cmd) {
4377 rdev->testmode_info = info;
4378 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4379 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4380 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4381 rdev->testmode_info = NULL;
4382 }
4383
4384 return err;
4385 }
4386
4387 static int nl80211_testmode_dump(struct sk_buff *skb,
4388 struct netlink_callback *cb)
4389 {
4390 struct cfg80211_registered_device *dev;
4391 int err;
4392 long phy_idx;
4393 void *data = NULL;
4394 int data_len = 0;
4395
4396 if (cb->args[0]) {
4397 /*
4398 * 0 is a valid index, but not valid for args[0],
4399 * so we need to offset by 1.
4400 */
4401 phy_idx = cb->args[0] - 1;
4402 } else {
4403 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4404 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4405 nl80211_policy);
4406 if (err)
4407 return err;
4408 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4409 return -EINVAL;
4410 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4411 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4412 cb->args[1] =
4413 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4414 }
4415
4416 if (cb->args[1]) {
4417 data = nla_data((void *)cb->args[1]);
4418 data_len = nla_len((void *)cb->args[1]);
4419 }
4420
4421 mutex_lock(&cfg80211_mutex);
4422 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4423 if (!dev) {
4424 mutex_unlock(&cfg80211_mutex);
4425 return -ENOENT;
4426 }
4427 cfg80211_lock_rdev(dev);
4428 mutex_unlock(&cfg80211_mutex);
4429
4430 if (!dev->ops->testmode_dump) {
4431 err = -EOPNOTSUPP;
4432 goto out_err;
4433 }
4434
4435 while (1) {
4436 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4437 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4438 NL80211_CMD_TESTMODE);
4439 struct nlattr *tmdata;
4440
4441 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4442 genlmsg_cancel(skb, hdr);
4443 break;
4444 }
4445
4446 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4447 if (!tmdata) {
4448 genlmsg_cancel(skb, hdr);
4449 break;
4450 }
4451 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4452 data, data_len);
4453 nla_nest_end(skb, tmdata);
4454
4455 if (err == -ENOBUFS || err == -ENOENT) {
4456 genlmsg_cancel(skb, hdr);
4457 break;
4458 } else if (err) {
4459 genlmsg_cancel(skb, hdr);
4460 goto out_err;
4461 }
4462
4463 genlmsg_end(skb, hdr);
4464 }
4465
4466 err = skb->len;
4467 /* see above */
4468 cb->args[0] = phy_idx + 1;
4469 out_err:
4470 cfg80211_unlock_rdev(dev);
4471 return err;
4472 }
4473
4474 static struct sk_buff *
4475 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4476 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4477 {
4478 struct sk_buff *skb;
4479 void *hdr;
4480 struct nlattr *data;
4481
4482 skb = nlmsg_new(approxlen + 100, gfp);
4483 if (!skb)
4484 return NULL;
4485
4486 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4487 if (!hdr) {
4488 kfree_skb(skb);
4489 return NULL;
4490 }
4491
4492 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4493 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4494
4495 ((void **)skb->cb)[0] = rdev;
4496 ((void **)skb->cb)[1] = hdr;
4497 ((void **)skb->cb)[2] = data;
4498
4499 return skb;
4500
4501 nla_put_failure:
4502 kfree_skb(skb);
4503 return NULL;
4504 }
4505
4506 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4507 int approxlen)
4508 {
4509 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4510
4511 if (WARN_ON(!rdev->testmode_info))
4512 return NULL;
4513
4514 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4515 rdev->testmode_info->snd_pid,
4516 rdev->testmode_info->snd_seq,
4517 GFP_KERNEL);
4518 }
4519 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4520
4521 int cfg80211_testmode_reply(struct sk_buff *skb)
4522 {
4523 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4524 void *hdr = ((void **)skb->cb)[1];
4525 struct nlattr *data = ((void **)skb->cb)[2];
4526
4527 if (WARN_ON(!rdev->testmode_info)) {
4528 kfree_skb(skb);
4529 return -EINVAL;
4530 }
4531
4532 nla_nest_end(skb, data);
4533 genlmsg_end(skb, hdr);
4534 return genlmsg_reply(skb, rdev->testmode_info);
4535 }
4536 EXPORT_SYMBOL(cfg80211_testmode_reply);
4537
4538 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4539 int approxlen, gfp_t gfp)
4540 {
4541 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4542
4543 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4544 }
4545 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4546
4547 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4548 {
4549 void *hdr = ((void **)skb->cb)[1];
4550 struct nlattr *data = ((void **)skb->cb)[2];
4551
4552 nla_nest_end(skb, data);
4553 genlmsg_end(skb, hdr);
4554 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4555 }
4556 EXPORT_SYMBOL(cfg80211_testmode_event);
4557 #endif
4558
4559 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4560 {
4561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4562 struct net_device *dev = info->user_ptr[1];
4563 struct cfg80211_connect_params connect;
4564 struct wiphy *wiphy;
4565 struct cfg80211_cached_keys *connkeys = NULL;
4566 int err;
4567
4568 memset(&connect, 0, sizeof(connect));
4569
4570 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4571 return -EINVAL;
4572
4573 if (!info->attrs[NL80211_ATTR_SSID] ||
4574 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4575 return -EINVAL;
4576
4577 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4578 connect.auth_type =
4579 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4580 if (!nl80211_valid_auth_type(connect.auth_type))
4581 return -EINVAL;
4582 } else
4583 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4584
4585 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4586
4587 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4588 NL80211_MAX_NR_CIPHER_SUITES);
4589 if (err)
4590 return err;
4591
4592 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4593 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4594 return -EOPNOTSUPP;
4595
4596 wiphy = &rdev->wiphy;
4597
4598 if (info->attrs[NL80211_ATTR_MAC])
4599 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4600 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4601 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4602
4603 if (info->attrs[NL80211_ATTR_IE]) {
4604 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4605 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4606 }
4607
4608 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4609 connect.channel =
4610 ieee80211_get_channel(wiphy,
4611 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4612 if (!connect.channel ||
4613 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4614 return -EINVAL;
4615 }
4616
4617 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4618 connkeys = nl80211_parse_connkeys(rdev,
4619 info->attrs[NL80211_ATTR_KEYS]);
4620 if (IS_ERR(connkeys))
4621 return PTR_ERR(connkeys);
4622 }
4623
4624 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4625 if (err)
4626 kfree(connkeys);
4627 return err;
4628 }
4629
4630 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4631 {
4632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4633 struct net_device *dev = info->user_ptr[1];
4634 u16 reason;
4635
4636 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4637 reason = WLAN_REASON_DEAUTH_LEAVING;
4638 else
4639 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4640
4641 if (reason == 0)
4642 return -EINVAL;
4643
4644 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4645 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4646 return -EOPNOTSUPP;
4647
4648 return cfg80211_disconnect(rdev, dev, reason, true);
4649 }
4650
4651 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4652 {
4653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4654 struct net *net;
4655 int err;
4656 u32 pid;
4657
4658 if (!info->attrs[NL80211_ATTR_PID])
4659 return -EINVAL;
4660
4661 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4662
4663 net = get_net_ns_by_pid(pid);
4664 if (IS_ERR(net))
4665 return PTR_ERR(net);
4666
4667 err = 0;
4668
4669 /* check if anything to do */
4670 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4671 err = cfg80211_switch_netns(rdev, net);
4672
4673 put_net(net);
4674 return err;
4675 }
4676
4677 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4678 {
4679 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4680 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4681 struct cfg80211_pmksa *pmksa) = NULL;
4682 struct net_device *dev = info->user_ptr[1];
4683 struct cfg80211_pmksa pmksa;
4684
4685 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4686
4687 if (!info->attrs[NL80211_ATTR_MAC])
4688 return -EINVAL;
4689
4690 if (!info->attrs[NL80211_ATTR_PMKID])
4691 return -EINVAL;
4692
4693 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4694 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4695
4696 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4697 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4698 return -EOPNOTSUPP;
4699
4700 switch (info->genlhdr->cmd) {
4701 case NL80211_CMD_SET_PMKSA:
4702 rdev_ops = rdev->ops->set_pmksa;
4703 break;
4704 case NL80211_CMD_DEL_PMKSA:
4705 rdev_ops = rdev->ops->del_pmksa;
4706 break;
4707 default:
4708 WARN_ON(1);
4709 break;
4710 }
4711
4712 if (!rdev_ops)
4713 return -EOPNOTSUPP;
4714
4715 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4716 }
4717
4718 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4719 {
4720 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4721 struct net_device *dev = info->user_ptr[1];
4722
4723 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4724 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4725 return -EOPNOTSUPP;
4726
4727 if (!rdev->ops->flush_pmksa)
4728 return -EOPNOTSUPP;
4729
4730 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4731 }
4732
4733 static int nl80211_remain_on_channel(struct sk_buff *skb,
4734 struct genl_info *info)
4735 {
4736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4737 struct net_device *dev = info->user_ptr[1];
4738 struct ieee80211_channel *chan;
4739 struct sk_buff *msg;
4740 void *hdr;
4741 u64 cookie;
4742 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4743 u32 freq, duration;
4744 int err;
4745
4746 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4747 !info->attrs[NL80211_ATTR_DURATION])
4748 return -EINVAL;
4749
4750 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4751
4752 /*
4753 * We should be on that channel for at least one jiffie,
4754 * and more than 5 seconds seems excessive.
4755 */
4756 if (!duration || !msecs_to_jiffies(duration) ||
4757 duration > rdev->wiphy.max_remain_on_channel_duration)
4758 return -EINVAL;
4759
4760 if (!rdev->ops->remain_on_channel)
4761 return -EOPNOTSUPP;
4762
4763 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4764 channel_type = nla_get_u32(
4765 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4766 if (channel_type != NL80211_CHAN_NO_HT &&
4767 channel_type != NL80211_CHAN_HT20 &&
4768 channel_type != NL80211_CHAN_HT40PLUS &&
4769 channel_type != NL80211_CHAN_HT40MINUS)
4770 return -EINVAL;
4771 }
4772
4773 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4774 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4775 if (chan == NULL)
4776 return -EINVAL;
4777
4778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4779 if (!msg)
4780 return -ENOMEM;
4781
4782 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4783 NL80211_CMD_REMAIN_ON_CHANNEL);
4784
4785 if (IS_ERR(hdr)) {
4786 err = PTR_ERR(hdr);
4787 goto free_msg;
4788 }
4789
4790 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4791 channel_type, duration, &cookie);
4792
4793 if (err)
4794 goto free_msg;
4795
4796 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4797
4798 genlmsg_end(msg, hdr);
4799
4800 return genlmsg_reply(msg, info);
4801
4802 nla_put_failure:
4803 err = -ENOBUFS;
4804 free_msg:
4805 nlmsg_free(msg);
4806 return err;
4807 }
4808
4809 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4810 struct genl_info *info)
4811 {
4812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4813 struct net_device *dev = info->user_ptr[1];
4814 u64 cookie;
4815
4816 if (!info->attrs[NL80211_ATTR_COOKIE])
4817 return -EINVAL;
4818
4819 if (!rdev->ops->cancel_remain_on_channel)
4820 return -EOPNOTSUPP;
4821
4822 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4823
4824 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4825 }
4826
4827 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4828 u8 *rates, u8 rates_len)
4829 {
4830 u8 i;
4831 u32 mask = 0;
4832
4833 for (i = 0; i < rates_len; i++) {
4834 int rate = (rates[i] & 0x7f) * 5;
4835 int ridx;
4836 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4837 struct ieee80211_rate *srate =
4838 &sband->bitrates[ridx];
4839 if (rate == srate->bitrate) {
4840 mask |= 1 << ridx;
4841 break;
4842 }
4843 }
4844 if (ridx == sband->n_bitrates)
4845 return 0; /* rate not found */
4846 }
4847
4848 return mask;
4849 }
4850
4851 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4852 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4853 .len = NL80211_MAX_SUPP_RATES },
4854 };
4855
4856 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4857 struct genl_info *info)
4858 {
4859 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4861 struct cfg80211_bitrate_mask mask;
4862 int rem, i;
4863 struct net_device *dev = info->user_ptr[1];
4864 struct nlattr *tx_rates;
4865 struct ieee80211_supported_band *sband;
4866
4867 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4868 return -EINVAL;
4869
4870 if (!rdev->ops->set_bitrate_mask)
4871 return -EOPNOTSUPP;
4872
4873 memset(&mask, 0, sizeof(mask));
4874 /* Default to all rates enabled */
4875 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4876 sband = rdev->wiphy.bands[i];
4877 mask.control[i].legacy =
4878 sband ? (1 << sband->n_bitrates) - 1 : 0;
4879 }
4880
4881 /*
4882 * The nested attribute uses enum nl80211_band as the index. This maps
4883 * directly to the enum ieee80211_band values used in cfg80211.
4884 */
4885 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4886 {
4887 enum ieee80211_band band = nla_type(tx_rates);
4888 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4889 return -EINVAL;
4890 sband = rdev->wiphy.bands[band];
4891 if (sband == NULL)
4892 return -EINVAL;
4893 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4894 nla_len(tx_rates), nl80211_txattr_policy);
4895 if (tb[NL80211_TXRATE_LEGACY]) {
4896 mask.control[band].legacy = rateset_to_mask(
4897 sband,
4898 nla_data(tb[NL80211_TXRATE_LEGACY]),
4899 nla_len(tb[NL80211_TXRATE_LEGACY]));
4900 if (mask.control[band].legacy == 0)
4901 return -EINVAL;
4902 }
4903 }
4904
4905 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4906 }
4907
4908 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4909 {
4910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4911 struct net_device *dev = info->user_ptr[1];
4912 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4913
4914 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4915 return -EINVAL;
4916
4917 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4918 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4919
4920 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4921 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4923 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4924 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4925 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4927 return -EOPNOTSUPP;
4928
4929 /* not much point in registering if we can't reply */
4930 if (!rdev->ops->mgmt_tx)
4931 return -EOPNOTSUPP;
4932
4933 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4934 frame_type,
4935 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4936 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4937 }
4938
4939 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4940 {
4941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4942 struct net_device *dev = info->user_ptr[1];
4943 struct ieee80211_channel *chan;
4944 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4945 bool channel_type_valid = false;
4946 u32 freq;
4947 int err;
4948 void *hdr;
4949 u64 cookie;
4950 struct sk_buff *msg;
4951 unsigned int wait = 0;
4952 bool offchan;
4953
4954 if (!info->attrs[NL80211_ATTR_FRAME] ||
4955 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4956 return -EINVAL;
4957
4958 if (!rdev->ops->mgmt_tx)
4959 return -EOPNOTSUPP;
4960
4961 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4962 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4963 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4964 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4965 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4966 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4967 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4968 return -EOPNOTSUPP;
4969
4970 if (info->attrs[NL80211_ATTR_DURATION]) {
4971 if (!rdev->ops->mgmt_tx_cancel_wait)
4972 return -EINVAL;
4973 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4974 }
4975
4976 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4977 channel_type = nla_get_u32(
4978 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4979 if (channel_type != NL80211_CHAN_NO_HT &&
4980 channel_type != NL80211_CHAN_HT20 &&
4981 channel_type != NL80211_CHAN_HT40PLUS &&
4982 channel_type != NL80211_CHAN_HT40MINUS)
4983 return -EINVAL;
4984 channel_type_valid = true;
4985 }
4986
4987 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4988
4989 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4990 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4991 if (chan == NULL)
4992 return -EINVAL;
4993
4994 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4995 if (!msg)
4996 return -ENOMEM;
4997
4998 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4999 NL80211_CMD_FRAME);
5000
5001 if (IS_ERR(hdr)) {
5002 err = PTR_ERR(hdr);
5003 goto free_msg;
5004 }
5005 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5006 channel_type_valid, wait,
5007 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5008 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5009 &cookie);
5010 if (err)
5011 goto free_msg;
5012
5013 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5014
5015 genlmsg_end(msg, hdr);
5016 return genlmsg_reply(msg, info);
5017
5018 nla_put_failure:
5019 err = -ENOBUFS;
5020 free_msg:
5021 nlmsg_free(msg);
5022 return err;
5023 }
5024
5025 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5026 {
5027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5028 struct net_device *dev = info->user_ptr[1];
5029 u64 cookie;
5030
5031 if (!info->attrs[NL80211_ATTR_COOKIE])
5032 return -EINVAL;
5033
5034 if (!rdev->ops->mgmt_tx_cancel_wait)
5035 return -EOPNOTSUPP;
5036
5037 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5038 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5039 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5040 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5041 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5042 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5043 return -EOPNOTSUPP;
5044
5045 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5046
5047 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5048 }
5049
5050 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5051 {
5052 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5053 struct wireless_dev *wdev;
5054 struct net_device *dev = info->user_ptr[1];
5055 u8 ps_state;
5056 bool state;
5057 int err;
5058
5059 if (!info->attrs[NL80211_ATTR_PS_STATE])
5060 return -EINVAL;
5061
5062 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5063
5064 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5065 return -EINVAL;
5066
5067 wdev = dev->ieee80211_ptr;
5068
5069 if (!rdev->ops->set_power_mgmt)
5070 return -EOPNOTSUPP;
5071
5072 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5073
5074 if (state == wdev->ps)
5075 return 0;
5076
5077 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5078 wdev->ps_timeout);
5079 if (!err)
5080 wdev->ps = state;
5081 return err;
5082 }
5083
5084 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5085 {
5086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5087 enum nl80211_ps_state ps_state;
5088 struct wireless_dev *wdev;
5089 struct net_device *dev = info->user_ptr[1];
5090 struct sk_buff *msg;
5091 void *hdr;
5092 int err;
5093
5094 wdev = dev->ieee80211_ptr;
5095
5096 if (!rdev->ops->set_power_mgmt)
5097 return -EOPNOTSUPP;
5098
5099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5100 if (!msg)
5101 return -ENOMEM;
5102
5103 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5104 NL80211_CMD_GET_POWER_SAVE);
5105 if (!hdr) {
5106 err = -ENOBUFS;
5107 goto free_msg;
5108 }
5109
5110 if (wdev->ps)
5111 ps_state = NL80211_PS_ENABLED;
5112 else
5113 ps_state = NL80211_PS_DISABLED;
5114
5115 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5116
5117 genlmsg_end(msg, hdr);
5118 return genlmsg_reply(msg, info);
5119
5120 nla_put_failure:
5121 err = -ENOBUFS;
5122 free_msg:
5123 nlmsg_free(msg);
5124 return err;
5125 }
5126
5127 static struct nla_policy
5128 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5129 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5130 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5131 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5132 };
5133
5134 static int nl80211_set_cqm_rssi(struct genl_info *info,
5135 s32 threshold, u32 hysteresis)
5136 {
5137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5138 struct wireless_dev *wdev;
5139 struct net_device *dev = info->user_ptr[1];
5140
5141 if (threshold > 0)
5142 return -EINVAL;
5143
5144 wdev = dev->ieee80211_ptr;
5145
5146 if (!rdev->ops->set_cqm_rssi_config)
5147 return -EOPNOTSUPP;
5148
5149 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5150 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5151 return -EOPNOTSUPP;
5152
5153 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5154 threshold, hysteresis);
5155 }
5156
5157 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5158 {
5159 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5160 struct nlattr *cqm;
5161 int err;
5162
5163 cqm = info->attrs[NL80211_ATTR_CQM];
5164 if (!cqm) {
5165 err = -EINVAL;
5166 goto out;
5167 }
5168
5169 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5170 nl80211_attr_cqm_policy);
5171 if (err)
5172 goto out;
5173
5174 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5175 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5176 s32 threshold;
5177 u32 hysteresis;
5178 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5179 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5180 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5181 } else
5182 err = -EINVAL;
5183
5184 out:
5185 return err;
5186 }
5187
5188 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5189 {
5190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5191 struct net_device *dev = info->user_ptr[1];
5192 struct mesh_config cfg;
5193 struct mesh_setup setup;
5194 int err;
5195
5196 /* start with default */
5197 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5198 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5199
5200 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5201 /* and parse parameters if given */
5202 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5203 if (err)
5204 return err;
5205 }
5206
5207 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5208 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5209 return -EINVAL;
5210
5211 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5212 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5213
5214 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5215 /* parse additional setup parameters if given */
5216 err = nl80211_parse_mesh_setup(info, &setup);
5217 if (err)
5218 return err;
5219 }
5220
5221 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5222 }
5223
5224 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5225 {
5226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5227 struct net_device *dev = info->user_ptr[1];
5228
5229 return cfg80211_leave_mesh(rdev, dev);
5230 }
5231
5232 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5233 {
5234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5235 struct sk_buff *msg;
5236 void *hdr;
5237
5238 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5239 return -EOPNOTSUPP;
5240
5241 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5242 if (!msg)
5243 return -ENOMEM;
5244
5245 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5246 NL80211_CMD_GET_WOWLAN);
5247 if (!hdr)
5248 goto nla_put_failure;
5249
5250 if (rdev->wowlan) {
5251 struct nlattr *nl_wowlan;
5252
5253 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5254 if (!nl_wowlan)
5255 goto nla_put_failure;
5256
5257 if (rdev->wowlan->any)
5258 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5259 if (rdev->wowlan->disconnect)
5260 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5261 if (rdev->wowlan->magic_pkt)
5262 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5263 if (rdev->wowlan->n_patterns) {
5264 struct nlattr *nl_pats, *nl_pat;
5265 int i, pat_len;
5266
5267 nl_pats = nla_nest_start(msg,
5268 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5269 if (!nl_pats)
5270 goto nla_put_failure;
5271
5272 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5273 nl_pat = nla_nest_start(msg, i + 1);
5274 if (!nl_pat)
5275 goto nla_put_failure;
5276 pat_len = rdev->wowlan->patterns[i].pattern_len;
5277 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5278 DIV_ROUND_UP(pat_len, 8),
5279 rdev->wowlan->patterns[i].mask);
5280 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5281 pat_len,
5282 rdev->wowlan->patterns[i].pattern);
5283 nla_nest_end(msg, nl_pat);
5284 }
5285 nla_nest_end(msg, nl_pats);
5286 }
5287
5288 nla_nest_end(msg, nl_wowlan);
5289 }
5290
5291 genlmsg_end(msg, hdr);
5292 return genlmsg_reply(msg, info);
5293
5294 nla_put_failure:
5295 nlmsg_free(msg);
5296 return -ENOBUFS;
5297 }
5298
5299 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5300 {
5301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5302 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5303 struct cfg80211_wowlan no_triggers = {};
5304 struct cfg80211_wowlan new_triggers = {};
5305 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5306 int err, i;
5307
5308 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5309 return -EOPNOTSUPP;
5310
5311 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5312 goto no_triggers;
5313
5314 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5315 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5316 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5317 nl80211_wowlan_policy);
5318 if (err)
5319 return err;
5320
5321 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5322 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5323 return -EINVAL;
5324 new_triggers.any = true;
5325 }
5326
5327 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5328 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5329 return -EINVAL;
5330 new_triggers.disconnect = true;
5331 }
5332
5333 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5334 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5335 return -EINVAL;
5336 new_triggers.magic_pkt = true;
5337 }
5338
5339 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5340 struct nlattr *pat;
5341 int n_patterns = 0;
5342 int rem, pat_len, mask_len;
5343 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5344
5345 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5346 rem)
5347 n_patterns++;
5348 if (n_patterns > wowlan->n_patterns)
5349 return -EINVAL;
5350
5351 new_triggers.patterns = kcalloc(n_patterns,
5352 sizeof(new_triggers.patterns[0]),
5353 GFP_KERNEL);
5354 if (!new_triggers.patterns)
5355 return -ENOMEM;
5356
5357 new_triggers.n_patterns = n_patterns;
5358 i = 0;
5359
5360 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5361 rem) {
5362 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5363 nla_data(pat), nla_len(pat), NULL);
5364 err = -EINVAL;
5365 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5366 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5367 goto error;
5368 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5369 mask_len = DIV_ROUND_UP(pat_len, 8);
5370 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5371 mask_len)
5372 goto error;
5373 if (pat_len > wowlan->pattern_max_len ||
5374 pat_len < wowlan->pattern_min_len)
5375 goto error;
5376
5377 new_triggers.patterns[i].mask =
5378 kmalloc(mask_len + pat_len, GFP_KERNEL);
5379 if (!new_triggers.patterns[i].mask) {
5380 err = -ENOMEM;
5381 goto error;
5382 }
5383 new_triggers.patterns[i].pattern =
5384 new_triggers.patterns[i].mask + mask_len;
5385 memcpy(new_triggers.patterns[i].mask,
5386 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5387 mask_len);
5388 new_triggers.patterns[i].pattern_len = pat_len;
5389 memcpy(new_triggers.patterns[i].pattern,
5390 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5391 pat_len);
5392 i++;
5393 }
5394 }
5395
5396 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5397 struct cfg80211_wowlan *ntrig;
5398 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5399 GFP_KERNEL);
5400 if (!ntrig) {
5401 err = -ENOMEM;
5402 goto error;
5403 }
5404 cfg80211_rdev_free_wowlan(rdev);
5405 rdev->wowlan = ntrig;
5406 } else {
5407 no_triggers:
5408 cfg80211_rdev_free_wowlan(rdev);
5409 rdev->wowlan = NULL;
5410 }
5411
5412 return 0;
5413 error:
5414 for (i = 0; i < new_triggers.n_patterns; i++)
5415 kfree(new_triggers.patterns[i].mask);
5416 kfree(new_triggers.patterns);
5417 return err;
5418 }
5419
5420 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5421 {
5422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5423 struct net_device *dev = info->user_ptr[1];
5424 struct wireless_dev *wdev = dev->ieee80211_ptr;
5425 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5426 struct cfg80211_gtk_rekey_data rekey_data;
5427 int err;
5428
5429 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5430 return -EINVAL;
5431
5432 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5433 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5434 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5435 nl80211_rekey_policy);
5436 if (err)
5437 return err;
5438
5439 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5440 return -ERANGE;
5441 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5442 return -ERANGE;
5443 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5444 return -ERANGE;
5445
5446 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5447 NL80211_KEK_LEN);
5448 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5449 NL80211_KCK_LEN);
5450 memcpy(rekey_data.replay_ctr,
5451 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5452 NL80211_REPLAY_CTR_LEN);
5453
5454 wdev_lock(wdev);
5455 if (!wdev->current_bss) {
5456 err = -ENOTCONN;
5457 goto out;
5458 }
5459
5460 if (!rdev->ops->set_rekey_data) {
5461 err = -EOPNOTSUPP;
5462 goto out;
5463 }
5464
5465 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5466 out:
5467 wdev_unlock(wdev);
5468 return err;
5469 }
5470
5471 #define NL80211_FLAG_NEED_WIPHY 0x01
5472 #define NL80211_FLAG_NEED_NETDEV 0x02
5473 #define NL80211_FLAG_NEED_RTNL 0x04
5474 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5475 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5476 NL80211_FLAG_CHECK_NETDEV_UP)
5477
5478 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5479 struct genl_info *info)
5480 {
5481 struct cfg80211_registered_device *rdev;
5482 struct net_device *dev;
5483 int err;
5484 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5485
5486 if (rtnl)
5487 rtnl_lock();
5488
5489 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5490 rdev = cfg80211_get_dev_from_info(info);
5491 if (IS_ERR(rdev)) {
5492 if (rtnl)
5493 rtnl_unlock();
5494 return PTR_ERR(rdev);
5495 }
5496 info->user_ptr[0] = rdev;
5497 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5498 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5499 if (err) {
5500 if (rtnl)
5501 rtnl_unlock();
5502 return err;
5503 }
5504 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5505 !netif_running(dev)) {
5506 cfg80211_unlock_rdev(rdev);
5507 dev_put(dev);
5508 if (rtnl)
5509 rtnl_unlock();
5510 return -ENETDOWN;
5511 }
5512 info->user_ptr[0] = rdev;
5513 info->user_ptr[1] = dev;
5514 }
5515
5516 return 0;
5517 }
5518
5519 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5520 struct genl_info *info)
5521 {
5522 if (info->user_ptr[0])
5523 cfg80211_unlock_rdev(info->user_ptr[0]);
5524 if (info->user_ptr[1])
5525 dev_put(info->user_ptr[1]);
5526 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5527 rtnl_unlock();
5528 }
5529
5530 static struct genl_ops nl80211_ops[] = {
5531 {
5532 .cmd = NL80211_CMD_GET_WIPHY,
5533 .doit = nl80211_get_wiphy,
5534 .dumpit = nl80211_dump_wiphy,
5535 .policy = nl80211_policy,
5536 /* can be retrieved by unprivileged users */
5537 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5538 },
5539 {
5540 .cmd = NL80211_CMD_SET_WIPHY,
5541 .doit = nl80211_set_wiphy,
5542 .policy = nl80211_policy,
5543 .flags = GENL_ADMIN_PERM,
5544 .internal_flags = NL80211_FLAG_NEED_RTNL,
5545 },
5546 {
5547 .cmd = NL80211_CMD_GET_INTERFACE,
5548 .doit = nl80211_get_interface,
5549 .dumpit = nl80211_dump_interface,
5550 .policy = nl80211_policy,
5551 /* can be retrieved by unprivileged users */
5552 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5553 },
5554 {
5555 .cmd = NL80211_CMD_SET_INTERFACE,
5556 .doit = nl80211_set_interface,
5557 .policy = nl80211_policy,
5558 .flags = GENL_ADMIN_PERM,
5559 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5560 NL80211_FLAG_NEED_RTNL,
5561 },
5562 {
5563 .cmd = NL80211_CMD_NEW_INTERFACE,
5564 .doit = nl80211_new_interface,
5565 .policy = nl80211_policy,
5566 .flags = GENL_ADMIN_PERM,
5567 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5568 NL80211_FLAG_NEED_RTNL,
5569 },
5570 {
5571 .cmd = NL80211_CMD_DEL_INTERFACE,
5572 .doit = nl80211_del_interface,
5573 .policy = nl80211_policy,
5574 .flags = GENL_ADMIN_PERM,
5575 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5576 NL80211_FLAG_NEED_RTNL,
5577 },
5578 {
5579 .cmd = NL80211_CMD_GET_KEY,
5580 .doit = nl80211_get_key,
5581 .policy = nl80211_policy,
5582 .flags = GENL_ADMIN_PERM,
5583 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5584 NL80211_FLAG_NEED_RTNL,
5585 },
5586 {
5587 .cmd = NL80211_CMD_SET_KEY,
5588 .doit = nl80211_set_key,
5589 .policy = nl80211_policy,
5590 .flags = GENL_ADMIN_PERM,
5591 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5592 NL80211_FLAG_NEED_RTNL,
5593 },
5594 {
5595 .cmd = NL80211_CMD_NEW_KEY,
5596 .doit = nl80211_new_key,
5597 .policy = nl80211_policy,
5598 .flags = GENL_ADMIN_PERM,
5599 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5600 NL80211_FLAG_NEED_RTNL,
5601 },
5602 {
5603 .cmd = NL80211_CMD_DEL_KEY,
5604 .doit = nl80211_del_key,
5605 .policy = nl80211_policy,
5606 .flags = GENL_ADMIN_PERM,
5607 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5608 NL80211_FLAG_NEED_RTNL,
5609 },
5610 {
5611 .cmd = NL80211_CMD_SET_BEACON,
5612 .policy = nl80211_policy,
5613 .flags = GENL_ADMIN_PERM,
5614 .doit = nl80211_addset_beacon,
5615 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5616 NL80211_FLAG_NEED_RTNL,
5617 },
5618 {
5619 .cmd = NL80211_CMD_NEW_BEACON,
5620 .policy = nl80211_policy,
5621 .flags = GENL_ADMIN_PERM,
5622 .doit = nl80211_addset_beacon,
5623 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5624 NL80211_FLAG_NEED_RTNL,
5625 },
5626 {
5627 .cmd = NL80211_CMD_DEL_BEACON,
5628 .policy = nl80211_policy,
5629 .flags = GENL_ADMIN_PERM,
5630 .doit = nl80211_del_beacon,
5631 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5632 NL80211_FLAG_NEED_RTNL,
5633 },
5634 {
5635 .cmd = NL80211_CMD_GET_STATION,
5636 .doit = nl80211_get_station,
5637 .dumpit = nl80211_dump_station,
5638 .policy = nl80211_policy,
5639 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5640 NL80211_FLAG_NEED_RTNL,
5641 },
5642 {
5643 .cmd = NL80211_CMD_SET_STATION,
5644 .doit = nl80211_set_station,
5645 .policy = nl80211_policy,
5646 .flags = GENL_ADMIN_PERM,
5647 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5648 NL80211_FLAG_NEED_RTNL,
5649 },
5650 {
5651 .cmd = NL80211_CMD_NEW_STATION,
5652 .doit = nl80211_new_station,
5653 .policy = nl80211_policy,
5654 .flags = GENL_ADMIN_PERM,
5655 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5656 NL80211_FLAG_NEED_RTNL,
5657 },
5658 {
5659 .cmd = NL80211_CMD_DEL_STATION,
5660 .doit = nl80211_del_station,
5661 .policy = nl80211_policy,
5662 .flags = GENL_ADMIN_PERM,
5663 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5664 NL80211_FLAG_NEED_RTNL,
5665 },
5666 {
5667 .cmd = NL80211_CMD_GET_MPATH,
5668 .doit = nl80211_get_mpath,
5669 .dumpit = nl80211_dump_mpath,
5670 .policy = nl80211_policy,
5671 .flags = GENL_ADMIN_PERM,
5672 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5673 NL80211_FLAG_NEED_RTNL,
5674 },
5675 {
5676 .cmd = NL80211_CMD_SET_MPATH,
5677 .doit = nl80211_set_mpath,
5678 .policy = nl80211_policy,
5679 .flags = GENL_ADMIN_PERM,
5680 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5681 NL80211_FLAG_NEED_RTNL,
5682 },
5683 {
5684 .cmd = NL80211_CMD_NEW_MPATH,
5685 .doit = nl80211_new_mpath,
5686 .policy = nl80211_policy,
5687 .flags = GENL_ADMIN_PERM,
5688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5689 NL80211_FLAG_NEED_RTNL,
5690 },
5691 {
5692 .cmd = NL80211_CMD_DEL_MPATH,
5693 .doit = nl80211_del_mpath,
5694 .policy = nl80211_policy,
5695 .flags = GENL_ADMIN_PERM,
5696 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5697 NL80211_FLAG_NEED_RTNL,
5698 },
5699 {
5700 .cmd = NL80211_CMD_SET_BSS,
5701 .doit = nl80211_set_bss,
5702 .policy = nl80211_policy,
5703 .flags = GENL_ADMIN_PERM,
5704 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5705 NL80211_FLAG_NEED_RTNL,
5706 },
5707 {
5708 .cmd = NL80211_CMD_GET_REG,
5709 .doit = nl80211_get_reg,
5710 .policy = nl80211_policy,
5711 /* can be retrieved by unprivileged users */
5712 },
5713 {
5714 .cmd = NL80211_CMD_SET_REG,
5715 .doit = nl80211_set_reg,
5716 .policy = nl80211_policy,
5717 .flags = GENL_ADMIN_PERM,
5718 },
5719 {
5720 .cmd = NL80211_CMD_REQ_SET_REG,
5721 .doit = nl80211_req_set_reg,
5722 .policy = nl80211_policy,
5723 .flags = GENL_ADMIN_PERM,
5724 },
5725 {
5726 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5727 .doit = nl80211_get_mesh_config,
5728 .policy = nl80211_policy,
5729 /* can be retrieved by unprivileged users */
5730 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5731 NL80211_FLAG_NEED_RTNL,
5732 },
5733 {
5734 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5735 .doit = nl80211_update_mesh_config,
5736 .policy = nl80211_policy,
5737 .flags = GENL_ADMIN_PERM,
5738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5739 NL80211_FLAG_NEED_RTNL,
5740 },
5741 {
5742 .cmd = NL80211_CMD_TRIGGER_SCAN,
5743 .doit = nl80211_trigger_scan,
5744 .policy = nl80211_policy,
5745 .flags = GENL_ADMIN_PERM,
5746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5747 NL80211_FLAG_NEED_RTNL,
5748 },
5749 {
5750 .cmd = NL80211_CMD_GET_SCAN,
5751 .policy = nl80211_policy,
5752 .dumpit = nl80211_dump_scan,
5753 },
5754 {
5755 .cmd = NL80211_CMD_START_SCHED_SCAN,
5756 .doit = nl80211_start_sched_scan,
5757 .policy = nl80211_policy,
5758 .flags = GENL_ADMIN_PERM,
5759 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5760 NL80211_FLAG_NEED_RTNL,
5761 },
5762 {
5763 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5764 .doit = nl80211_stop_sched_scan,
5765 .policy = nl80211_policy,
5766 .flags = GENL_ADMIN_PERM,
5767 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5768 NL80211_FLAG_NEED_RTNL,
5769 },
5770 {
5771 .cmd = NL80211_CMD_AUTHENTICATE,
5772 .doit = nl80211_authenticate,
5773 .policy = nl80211_policy,
5774 .flags = GENL_ADMIN_PERM,
5775 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5776 NL80211_FLAG_NEED_RTNL,
5777 },
5778 {
5779 .cmd = NL80211_CMD_ASSOCIATE,
5780 .doit = nl80211_associate,
5781 .policy = nl80211_policy,
5782 .flags = GENL_ADMIN_PERM,
5783 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5784 NL80211_FLAG_NEED_RTNL,
5785 },
5786 {
5787 .cmd = NL80211_CMD_DEAUTHENTICATE,
5788 .doit = nl80211_deauthenticate,
5789 .policy = nl80211_policy,
5790 .flags = GENL_ADMIN_PERM,
5791 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5792 NL80211_FLAG_NEED_RTNL,
5793 },
5794 {
5795 .cmd = NL80211_CMD_DISASSOCIATE,
5796 .doit = nl80211_disassociate,
5797 .policy = nl80211_policy,
5798 .flags = GENL_ADMIN_PERM,
5799 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5800 NL80211_FLAG_NEED_RTNL,
5801 },
5802 {
5803 .cmd = NL80211_CMD_JOIN_IBSS,
5804 .doit = nl80211_join_ibss,
5805 .policy = nl80211_policy,
5806 .flags = GENL_ADMIN_PERM,
5807 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5808 NL80211_FLAG_NEED_RTNL,
5809 },
5810 {
5811 .cmd = NL80211_CMD_LEAVE_IBSS,
5812 .doit = nl80211_leave_ibss,
5813 .policy = nl80211_policy,
5814 .flags = GENL_ADMIN_PERM,
5815 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5816 NL80211_FLAG_NEED_RTNL,
5817 },
5818 #ifdef CONFIG_NL80211_TESTMODE
5819 {
5820 .cmd = NL80211_CMD_TESTMODE,
5821 .doit = nl80211_testmode_do,
5822 .dumpit = nl80211_testmode_dump,
5823 .policy = nl80211_policy,
5824 .flags = GENL_ADMIN_PERM,
5825 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5826 NL80211_FLAG_NEED_RTNL,
5827 },
5828 #endif
5829 {
5830 .cmd = NL80211_CMD_CONNECT,
5831 .doit = nl80211_connect,
5832 .policy = nl80211_policy,
5833 .flags = GENL_ADMIN_PERM,
5834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5835 NL80211_FLAG_NEED_RTNL,
5836 },
5837 {
5838 .cmd = NL80211_CMD_DISCONNECT,
5839 .doit = nl80211_disconnect,
5840 .policy = nl80211_policy,
5841 .flags = GENL_ADMIN_PERM,
5842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5843 NL80211_FLAG_NEED_RTNL,
5844 },
5845 {
5846 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5847 .doit = nl80211_wiphy_netns,
5848 .policy = nl80211_policy,
5849 .flags = GENL_ADMIN_PERM,
5850 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5851 NL80211_FLAG_NEED_RTNL,
5852 },
5853 {
5854 .cmd = NL80211_CMD_GET_SURVEY,
5855 .policy = nl80211_policy,
5856 .dumpit = nl80211_dump_survey,
5857 },
5858 {
5859 .cmd = NL80211_CMD_SET_PMKSA,
5860 .doit = nl80211_setdel_pmksa,
5861 .policy = nl80211_policy,
5862 .flags = GENL_ADMIN_PERM,
5863 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5864 NL80211_FLAG_NEED_RTNL,
5865 },
5866 {
5867 .cmd = NL80211_CMD_DEL_PMKSA,
5868 .doit = nl80211_setdel_pmksa,
5869 .policy = nl80211_policy,
5870 .flags = GENL_ADMIN_PERM,
5871 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5872 NL80211_FLAG_NEED_RTNL,
5873 },
5874 {
5875 .cmd = NL80211_CMD_FLUSH_PMKSA,
5876 .doit = nl80211_flush_pmksa,
5877 .policy = nl80211_policy,
5878 .flags = GENL_ADMIN_PERM,
5879 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5880 NL80211_FLAG_NEED_RTNL,
5881 },
5882 {
5883 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5884 .doit = nl80211_remain_on_channel,
5885 .policy = nl80211_policy,
5886 .flags = GENL_ADMIN_PERM,
5887 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5888 NL80211_FLAG_NEED_RTNL,
5889 },
5890 {
5891 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5892 .doit = nl80211_cancel_remain_on_channel,
5893 .policy = nl80211_policy,
5894 .flags = GENL_ADMIN_PERM,
5895 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5896 NL80211_FLAG_NEED_RTNL,
5897 },
5898 {
5899 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5900 .doit = nl80211_set_tx_bitrate_mask,
5901 .policy = nl80211_policy,
5902 .flags = GENL_ADMIN_PERM,
5903 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5904 NL80211_FLAG_NEED_RTNL,
5905 },
5906 {
5907 .cmd = NL80211_CMD_REGISTER_FRAME,
5908 .doit = nl80211_register_mgmt,
5909 .policy = nl80211_policy,
5910 .flags = GENL_ADMIN_PERM,
5911 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5912 NL80211_FLAG_NEED_RTNL,
5913 },
5914 {
5915 .cmd = NL80211_CMD_FRAME,
5916 .doit = nl80211_tx_mgmt,
5917 .policy = nl80211_policy,
5918 .flags = GENL_ADMIN_PERM,
5919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5920 NL80211_FLAG_NEED_RTNL,
5921 },
5922 {
5923 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5924 .doit = nl80211_tx_mgmt_cancel_wait,
5925 .policy = nl80211_policy,
5926 .flags = GENL_ADMIN_PERM,
5927 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5928 NL80211_FLAG_NEED_RTNL,
5929 },
5930 {
5931 .cmd = NL80211_CMD_SET_POWER_SAVE,
5932 .doit = nl80211_set_power_save,
5933 .policy = nl80211_policy,
5934 .flags = GENL_ADMIN_PERM,
5935 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5936 NL80211_FLAG_NEED_RTNL,
5937 },
5938 {
5939 .cmd = NL80211_CMD_GET_POWER_SAVE,
5940 .doit = nl80211_get_power_save,
5941 .policy = nl80211_policy,
5942 /* can be retrieved by unprivileged users */
5943 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5944 NL80211_FLAG_NEED_RTNL,
5945 },
5946 {
5947 .cmd = NL80211_CMD_SET_CQM,
5948 .doit = nl80211_set_cqm,
5949 .policy = nl80211_policy,
5950 .flags = GENL_ADMIN_PERM,
5951 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5952 NL80211_FLAG_NEED_RTNL,
5953 },
5954 {
5955 .cmd = NL80211_CMD_SET_CHANNEL,
5956 .doit = nl80211_set_channel,
5957 .policy = nl80211_policy,
5958 .flags = GENL_ADMIN_PERM,
5959 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5960 NL80211_FLAG_NEED_RTNL,
5961 },
5962 {
5963 .cmd = NL80211_CMD_SET_WDS_PEER,
5964 .doit = nl80211_set_wds_peer,
5965 .policy = nl80211_policy,
5966 .flags = GENL_ADMIN_PERM,
5967 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5968 NL80211_FLAG_NEED_RTNL,
5969 },
5970 {
5971 .cmd = NL80211_CMD_JOIN_MESH,
5972 .doit = nl80211_join_mesh,
5973 .policy = nl80211_policy,
5974 .flags = GENL_ADMIN_PERM,
5975 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5976 NL80211_FLAG_NEED_RTNL,
5977 },
5978 {
5979 .cmd = NL80211_CMD_LEAVE_MESH,
5980 .doit = nl80211_leave_mesh,
5981 .policy = nl80211_policy,
5982 .flags = GENL_ADMIN_PERM,
5983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5984 NL80211_FLAG_NEED_RTNL,
5985 },
5986 {
5987 .cmd = NL80211_CMD_GET_WOWLAN,
5988 .doit = nl80211_get_wowlan,
5989 .policy = nl80211_policy,
5990 /* can be retrieved by unprivileged users */
5991 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5992 NL80211_FLAG_NEED_RTNL,
5993 },
5994 {
5995 .cmd = NL80211_CMD_SET_WOWLAN,
5996 .doit = nl80211_set_wowlan,
5997 .policy = nl80211_policy,
5998 .flags = GENL_ADMIN_PERM,
5999 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6000 NL80211_FLAG_NEED_RTNL,
6001 },
6002 {
6003 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6004 .doit = nl80211_set_rekey_data,
6005 .policy = nl80211_policy,
6006 .flags = GENL_ADMIN_PERM,
6007 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6008 NL80211_FLAG_NEED_RTNL,
6009 },
6010 };
6011
6012 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6013 .name = "mlme",
6014 };
6015
6016 /* multicast groups */
6017 static struct genl_multicast_group nl80211_config_mcgrp = {
6018 .name = "config",
6019 };
6020 static struct genl_multicast_group nl80211_scan_mcgrp = {
6021 .name = "scan",
6022 };
6023 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6024 .name = "regulatory",
6025 };
6026
6027 /* notification functions */
6028
6029 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6030 {
6031 struct sk_buff *msg;
6032
6033 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6034 if (!msg)
6035 return;
6036
6037 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6038 nlmsg_free(msg);
6039 return;
6040 }
6041
6042 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6043 nl80211_config_mcgrp.id, GFP_KERNEL);
6044 }
6045
6046 static int nl80211_add_scan_req(struct sk_buff *msg,
6047 struct cfg80211_registered_device *rdev)
6048 {
6049 struct cfg80211_scan_request *req = rdev->scan_req;
6050 struct nlattr *nest;
6051 int i;
6052
6053 ASSERT_RDEV_LOCK(rdev);
6054
6055 if (WARN_ON(!req))
6056 return 0;
6057
6058 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6059 if (!nest)
6060 goto nla_put_failure;
6061 for (i = 0; i < req->n_ssids; i++)
6062 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6063 nla_nest_end(msg, nest);
6064
6065 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6066 if (!nest)
6067 goto nla_put_failure;
6068 for (i = 0; i < req->n_channels; i++)
6069 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6070 nla_nest_end(msg, nest);
6071
6072 if (req->ie)
6073 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6074
6075 return 0;
6076 nla_put_failure:
6077 return -ENOBUFS;
6078 }
6079
6080 static int nl80211_send_scan_msg(struct sk_buff *msg,
6081 struct cfg80211_registered_device *rdev,
6082 struct net_device *netdev,
6083 u32 pid, u32 seq, int flags,
6084 u32 cmd)
6085 {
6086 void *hdr;
6087
6088 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6089 if (!hdr)
6090 return -1;
6091
6092 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6093 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6094
6095 /* ignore errors and send incomplete event anyway */
6096 nl80211_add_scan_req(msg, rdev);
6097
6098 return genlmsg_end(msg, hdr);
6099
6100 nla_put_failure:
6101 genlmsg_cancel(msg, hdr);
6102 return -EMSGSIZE;
6103 }
6104
6105 static int
6106 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6107 struct cfg80211_registered_device *rdev,
6108 struct net_device *netdev,
6109 u32 pid, u32 seq, int flags, u32 cmd)
6110 {
6111 void *hdr;
6112
6113 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6114 if (!hdr)
6115 return -1;
6116
6117 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6118 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6119
6120 return genlmsg_end(msg, hdr);
6121
6122 nla_put_failure:
6123 genlmsg_cancel(msg, hdr);
6124 return -EMSGSIZE;
6125 }
6126
6127 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6128 struct net_device *netdev)
6129 {
6130 struct sk_buff *msg;
6131
6132 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6133 if (!msg)
6134 return;
6135
6136 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6137 NL80211_CMD_TRIGGER_SCAN) < 0) {
6138 nlmsg_free(msg);
6139 return;
6140 }
6141
6142 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6143 nl80211_scan_mcgrp.id, GFP_KERNEL);
6144 }
6145
6146 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6147 struct net_device *netdev)
6148 {
6149 struct sk_buff *msg;
6150
6151 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6152 if (!msg)
6153 return;
6154
6155 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6156 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6157 nlmsg_free(msg);
6158 return;
6159 }
6160
6161 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6162 nl80211_scan_mcgrp.id, GFP_KERNEL);
6163 }
6164
6165 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6166 struct net_device *netdev)
6167 {
6168 struct sk_buff *msg;
6169
6170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6171 if (!msg)
6172 return;
6173
6174 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6175 NL80211_CMD_SCAN_ABORTED) < 0) {
6176 nlmsg_free(msg);
6177 return;
6178 }
6179
6180 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6181 nl80211_scan_mcgrp.id, GFP_KERNEL);
6182 }
6183
6184 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6185 struct net_device *netdev)
6186 {
6187 struct sk_buff *msg;
6188
6189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6190 if (!msg)
6191 return;
6192
6193 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6194 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6195 nlmsg_free(msg);
6196 return;
6197 }
6198
6199 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6200 nl80211_scan_mcgrp.id, GFP_KERNEL);
6201 }
6202
6203 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6204 struct net_device *netdev, u32 cmd)
6205 {
6206 struct sk_buff *msg;
6207
6208 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6209 if (!msg)
6210 return;
6211
6212 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6213 nlmsg_free(msg);
6214 return;
6215 }
6216
6217 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6218 nl80211_scan_mcgrp.id, GFP_KERNEL);
6219 }
6220
6221 /*
6222 * This can happen on global regulatory changes or device specific settings
6223 * based on custom world regulatory domains.
6224 */
6225 void nl80211_send_reg_change_event(struct regulatory_request *request)
6226 {
6227 struct sk_buff *msg;
6228 void *hdr;
6229
6230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6231 if (!msg)
6232 return;
6233
6234 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6235 if (!hdr) {
6236 nlmsg_free(msg);
6237 return;
6238 }
6239
6240 /* Userspace can always count this one always being set */
6241 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6242
6243 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6244 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6245 NL80211_REGDOM_TYPE_WORLD);
6246 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6247 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6248 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6249 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6250 request->intersect)
6251 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6252 NL80211_REGDOM_TYPE_INTERSECTION);
6253 else {
6254 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6255 NL80211_REGDOM_TYPE_COUNTRY);
6256 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6257 }
6258
6259 if (wiphy_idx_valid(request->wiphy_idx))
6260 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6261
6262 if (genlmsg_end(msg, hdr) < 0) {
6263 nlmsg_free(msg);
6264 return;
6265 }
6266
6267 rcu_read_lock();
6268 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6269 GFP_ATOMIC);
6270 rcu_read_unlock();
6271
6272 return;
6273
6274 nla_put_failure:
6275 genlmsg_cancel(msg, hdr);
6276 nlmsg_free(msg);
6277 }
6278
6279 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6280 struct net_device *netdev,
6281 const u8 *buf, size_t len,
6282 enum nl80211_commands cmd, gfp_t gfp)
6283 {
6284 struct sk_buff *msg;
6285 void *hdr;
6286
6287 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6288 if (!msg)
6289 return;
6290
6291 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6292 if (!hdr) {
6293 nlmsg_free(msg);
6294 return;
6295 }
6296
6297 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6299 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6300
6301 if (genlmsg_end(msg, hdr) < 0) {
6302 nlmsg_free(msg);
6303 return;
6304 }
6305
6306 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6307 nl80211_mlme_mcgrp.id, gfp);
6308 return;
6309
6310 nla_put_failure:
6311 genlmsg_cancel(msg, hdr);
6312 nlmsg_free(msg);
6313 }
6314
6315 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6316 struct net_device *netdev, const u8 *buf,
6317 size_t len, gfp_t gfp)
6318 {
6319 nl80211_send_mlme_event(rdev, netdev, buf, len,
6320 NL80211_CMD_AUTHENTICATE, gfp);
6321 }
6322
6323 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6324 struct net_device *netdev, const u8 *buf,
6325 size_t len, gfp_t gfp)
6326 {
6327 nl80211_send_mlme_event(rdev, netdev, buf, len,
6328 NL80211_CMD_ASSOCIATE, gfp);
6329 }
6330
6331 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6332 struct net_device *netdev, const u8 *buf,
6333 size_t len, gfp_t gfp)
6334 {
6335 nl80211_send_mlme_event(rdev, netdev, buf, len,
6336 NL80211_CMD_DEAUTHENTICATE, gfp);
6337 }
6338
6339 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6340 struct net_device *netdev, const u8 *buf,
6341 size_t len, gfp_t gfp)
6342 {
6343 nl80211_send_mlme_event(rdev, netdev, buf, len,
6344 NL80211_CMD_DISASSOCIATE, gfp);
6345 }
6346
6347 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6348 struct net_device *netdev, const u8 *buf,
6349 size_t len, gfp_t gfp)
6350 {
6351 nl80211_send_mlme_event(rdev, netdev, buf, len,
6352 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6353 }
6354
6355 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6356 struct net_device *netdev, const u8 *buf,
6357 size_t len, gfp_t gfp)
6358 {
6359 nl80211_send_mlme_event(rdev, netdev, buf, len,
6360 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6361 }
6362
6363 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6364 struct net_device *netdev, int cmd,
6365 const u8 *addr, gfp_t gfp)
6366 {
6367 struct sk_buff *msg;
6368 void *hdr;
6369
6370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6371 if (!msg)
6372 return;
6373
6374 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6375 if (!hdr) {
6376 nlmsg_free(msg);
6377 return;
6378 }
6379
6380 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6381 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6382 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6383 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6384
6385 if (genlmsg_end(msg, hdr) < 0) {
6386 nlmsg_free(msg);
6387 return;
6388 }
6389
6390 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6391 nl80211_mlme_mcgrp.id, gfp);
6392 return;
6393
6394 nla_put_failure:
6395 genlmsg_cancel(msg, hdr);
6396 nlmsg_free(msg);
6397 }
6398
6399 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6400 struct net_device *netdev, const u8 *addr,
6401 gfp_t gfp)
6402 {
6403 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6404 addr, gfp);
6405 }
6406
6407 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6408 struct net_device *netdev, const u8 *addr,
6409 gfp_t gfp)
6410 {
6411 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6412 addr, gfp);
6413 }
6414
6415 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6416 struct net_device *netdev, const u8 *bssid,
6417 const u8 *req_ie, size_t req_ie_len,
6418 const u8 *resp_ie, size_t resp_ie_len,
6419 u16 status, gfp_t gfp)
6420 {
6421 struct sk_buff *msg;
6422 void *hdr;
6423
6424 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6425 if (!msg)
6426 return;
6427
6428 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6429 if (!hdr) {
6430 nlmsg_free(msg);
6431 return;
6432 }
6433
6434 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6435 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6436 if (bssid)
6437 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6438 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6439 if (req_ie)
6440 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6441 if (resp_ie)
6442 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6443
6444 if (genlmsg_end(msg, hdr) < 0) {
6445 nlmsg_free(msg);
6446 return;
6447 }
6448
6449 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6450 nl80211_mlme_mcgrp.id, gfp);
6451 return;
6452
6453 nla_put_failure:
6454 genlmsg_cancel(msg, hdr);
6455 nlmsg_free(msg);
6456
6457 }
6458
6459 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6460 struct net_device *netdev, const u8 *bssid,
6461 const u8 *req_ie, size_t req_ie_len,
6462 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6463 {
6464 struct sk_buff *msg;
6465 void *hdr;
6466
6467 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6468 if (!msg)
6469 return;
6470
6471 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6472 if (!hdr) {
6473 nlmsg_free(msg);
6474 return;
6475 }
6476
6477 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6478 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6479 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6480 if (req_ie)
6481 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6482 if (resp_ie)
6483 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6484
6485 if (genlmsg_end(msg, hdr) < 0) {
6486 nlmsg_free(msg);
6487 return;
6488 }
6489
6490 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6491 nl80211_mlme_mcgrp.id, gfp);
6492 return;
6493
6494 nla_put_failure:
6495 genlmsg_cancel(msg, hdr);
6496 nlmsg_free(msg);
6497
6498 }
6499
6500 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6501 struct net_device *netdev, u16 reason,
6502 const u8 *ie, size_t ie_len, bool from_ap)
6503 {
6504 struct sk_buff *msg;
6505 void *hdr;
6506
6507 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6508 if (!msg)
6509 return;
6510
6511 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6512 if (!hdr) {
6513 nlmsg_free(msg);
6514 return;
6515 }
6516
6517 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6518 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6519 if (from_ap && reason)
6520 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6521 if (from_ap)
6522 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6523 if (ie)
6524 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6525
6526 if (genlmsg_end(msg, hdr) < 0) {
6527 nlmsg_free(msg);
6528 return;
6529 }
6530
6531 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6532 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6533 return;
6534
6535 nla_put_failure:
6536 genlmsg_cancel(msg, hdr);
6537 nlmsg_free(msg);
6538
6539 }
6540
6541 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6542 struct net_device *netdev, const u8 *bssid,
6543 gfp_t gfp)
6544 {
6545 struct sk_buff *msg;
6546 void *hdr;
6547
6548 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6549 if (!msg)
6550 return;
6551
6552 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6553 if (!hdr) {
6554 nlmsg_free(msg);
6555 return;
6556 }
6557
6558 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6559 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6560 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6561
6562 if (genlmsg_end(msg, hdr) < 0) {
6563 nlmsg_free(msg);
6564 return;
6565 }
6566
6567 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6568 nl80211_mlme_mcgrp.id, gfp);
6569 return;
6570
6571 nla_put_failure:
6572 genlmsg_cancel(msg, hdr);
6573 nlmsg_free(msg);
6574 }
6575
6576 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6577 struct net_device *netdev,
6578 const u8 *macaddr, const u8* ie, u8 ie_len,
6579 gfp_t gfp)
6580 {
6581 struct sk_buff *msg;
6582 void *hdr;
6583
6584 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6585 if (!msg)
6586 return;
6587
6588 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6589 if (!hdr) {
6590 nlmsg_free(msg);
6591 return;
6592 }
6593
6594 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6595 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6596 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6597 if (ie_len && ie)
6598 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6599
6600 if (genlmsg_end(msg, hdr) < 0) {
6601 nlmsg_free(msg);
6602 return;
6603 }
6604
6605 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6606 nl80211_mlme_mcgrp.id, gfp);
6607 return;
6608
6609 nla_put_failure:
6610 genlmsg_cancel(msg, hdr);
6611 nlmsg_free(msg);
6612 }
6613
6614 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6615 struct net_device *netdev, const u8 *addr,
6616 enum nl80211_key_type key_type, int key_id,
6617 const u8 *tsc, gfp_t gfp)
6618 {
6619 struct sk_buff *msg;
6620 void *hdr;
6621
6622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6623 if (!msg)
6624 return;
6625
6626 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6627 if (!hdr) {
6628 nlmsg_free(msg);
6629 return;
6630 }
6631
6632 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6633 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6634 if (addr)
6635 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6636 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6637 if (key_id != -1)
6638 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6639 if (tsc)
6640 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6641
6642 if (genlmsg_end(msg, hdr) < 0) {
6643 nlmsg_free(msg);
6644 return;
6645 }
6646
6647 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6648 nl80211_mlme_mcgrp.id, gfp);
6649 return;
6650
6651 nla_put_failure:
6652 genlmsg_cancel(msg, hdr);
6653 nlmsg_free(msg);
6654 }
6655
6656 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6657 struct ieee80211_channel *channel_before,
6658 struct ieee80211_channel *channel_after)
6659 {
6660 struct sk_buff *msg;
6661 void *hdr;
6662 struct nlattr *nl_freq;
6663
6664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6665 if (!msg)
6666 return;
6667
6668 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6669 if (!hdr) {
6670 nlmsg_free(msg);
6671 return;
6672 }
6673
6674 /*
6675 * Since we are applying the beacon hint to a wiphy we know its
6676 * wiphy_idx is valid
6677 */
6678 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6679
6680 /* Before */
6681 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6682 if (!nl_freq)
6683 goto nla_put_failure;
6684 if (nl80211_msg_put_channel(msg, channel_before))
6685 goto nla_put_failure;
6686 nla_nest_end(msg, nl_freq);
6687
6688 /* After */
6689 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6690 if (!nl_freq)
6691 goto nla_put_failure;
6692 if (nl80211_msg_put_channel(msg, channel_after))
6693 goto nla_put_failure;
6694 nla_nest_end(msg, nl_freq);
6695
6696 if (genlmsg_end(msg, hdr) < 0) {
6697 nlmsg_free(msg);
6698 return;
6699 }
6700
6701 rcu_read_lock();
6702 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6703 GFP_ATOMIC);
6704 rcu_read_unlock();
6705
6706 return;
6707
6708 nla_put_failure:
6709 genlmsg_cancel(msg, hdr);
6710 nlmsg_free(msg);
6711 }
6712
6713 static void nl80211_send_remain_on_chan_event(
6714 int cmd, struct cfg80211_registered_device *rdev,
6715 struct net_device *netdev, u64 cookie,
6716 struct ieee80211_channel *chan,
6717 enum nl80211_channel_type channel_type,
6718 unsigned int duration, gfp_t gfp)
6719 {
6720 struct sk_buff *msg;
6721 void *hdr;
6722
6723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6724 if (!msg)
6725 return;
6726
6727 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6728 if (!hdr) {
6729 nlmsg_free(msg);
6730 return;
6731 }
6732
6733 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6734 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6735 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6736 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6737 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6738
6739 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6740 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6741
6742 if (genlmsg_end(msg, hdr) < 0) {
6743 nlmsg_free(msg);
6744 return;
6745 }
6746
6747 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6748 nl80211_mlme_mcgrp.id, gfp);
6749 return;
6750
6751 nla_put_failure:
6752 genlmsg_cancel(msg, hdr);
6753 nlmsg_free(msg);
6754 }
6755
6756 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6757 struct net_device *netdev, u64 cookie,
6758 struct ieee80211_channel *chan,
6759 enum nl80211_channel_type channel_type,
6760 unsigned int duration, gfp_t gfp)
6761 {
6762 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6763 rdev, netdev, cookie, chan,
6764 channel_type, duration, gfp);
6765 }
6766
6767 void nl80211_send_remain_on_channel_cancel(
6768 struct cfg80211_registered_device *rdev, struct net_device *netdev,
6769 u64 cookie, struct ieee80211_channel *chan,
6770 enum nl80211_channel_type channel_type, gfp_t gfp)
6771 {
6772 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6773 rdev, netdev, cookie, chan,
6774 channel_type, 0, gfp);
6775 }
6776
6777 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6778 struct net_device *dev, const u8 *mac_addr,
6779 struct station_info *sinfo, gfp_t gfp)
6780 {
6781 struct sk_buff *msg;
6782
6783 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6784 if (!msg)
6785 return;
6786
6787 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6788 nlmsg_free(msg);
6789 return;
6790 }
6791
6792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6793 nl80211_mlme_mcgrp.id, gfp);
6794 }
6795
6796 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
6797 struct net_device *dev, const u8 *mac_addr,
6798 gfp_t gfp)
6799 {
6800 struct sk_buff *msg;
6801 void *hdr;
6802
6803 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6804 if (!msg)
6805 return;
6806
6807 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
6808 if (!hdr) {
6809 nlmsg_free(msg);
6810 return;
6811 }
6812
6813 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
6814 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
6815
6816 if (genlmsg_end(msg, hdr) < 0) {
6817 nlmsg_free(msg);
6818 return;
6819 }
6820
6821 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6822 nl80211_mlme_mcgrp.id, gfp);
6823 return;
6824
6825 nla_put_failure:
6826 genlmsg_cancel(msg, hdr);
6827 nlmsg_free(msg);
6828 }
6829
6830 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
6831 struct net_device *netdev, u32 nlpid,
6832 int freq, const u8 *buf, size_t len, gfp_t gfp)
6833 {
6834 struct sk_buff *msg;
6835 void *hdr;
6836 int err;
6837
6838 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6839 if (!msg)
6840 return -ENOMEM;
6841
6842 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
6843 if (!hdr) {
6844 nlmsg_free(msg);
6845 return -ENOMEM;
6846 }
6847
6848 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6849 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6850 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6851 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6852
6853 err = genlmsg_end(msg, hdr);
6854 if (err < 0) {
6855 nlmsg_free(msg);
6856 return err;
6857 }
6858
6859 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
6860 if (err < 0)
6861 return err;
6862 return 0;
6863
6864 nla_put_failure:
6865 genlmsg_cancel(msg, hdr);
6866 nlmsg_free(msg);
6867 return -ENOBUFS;
6868 }
6869
6870 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6871 struct net_device *netdev, u64 cookie,
6872 const u8 *buf, size_t len, bool ack,
6873 gfp_t gfp)
6874 {
6875 struct sk_buff *msg;
6876 void *hdr;
6877
6878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6879 if (!msg)
6880 return;
6881
6882 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6883 if (!hdr) {
6884 nlmsg_free(msg);
6885 return;
6886 }
6887
6888 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6889 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6890 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6891 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6892 if (ack)
6893 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6894
6895 if (genlmsg_end(msg, hdr) < 0) {
6896 nlmsg_free(msg);
6897 return;
6898 }
6899
6900 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6901 return;
6902
6903 nla_put_failure:
6904 genlmsg_cancel(msg, hdr);
6905 nlmsg_free(msg);
6906 }
6907
6908 void
6909 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6910 struct net_device *netdev,
6911 enum nl80211_cqm_rssi_threshold_event rssi_event,
6912 gfp_t gfp)
6913 {
6914 struct sk_buff *msg;
6915 struct nlattr *pinfoattr;
6916 void *hdr;
6917
6918 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6919 if (!msg)
6920 return;
6921
6922 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6923 if (!hdr) {
6924 nlmsg_free(msg);
6925 return;
6926 }
6927
6928 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6929 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6930
6931 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6932 if (!pinfoattr)
6933 goto nla_put_failure;
6934
6935 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6936 rssi_event);
6937
6938 nla_nest_end(msg, pinfoattr);
6939
6940 if (genlmsg_end(msg, hdr) < 0) {
6941 nlmsg_free(msg);
6942 return;
6943 }
6944
6945 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6946 nl80211_mlme_mcgrp.id, gfp);
6947 return;
6948
6949 nla_put_failure:
6950 genlmsg_cancel(msg, hdr);
6951 nlmsg_free(msg);
6952 }
6953
6954 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
6955 struct net_device *netdev, const u8 *bssid,
6956 const u8 *replay_ctr, gfp_t gfp)
6957 {
6958 struct sk_buff *msg;
6959 struct nlattr *rekey_attr;
6960 void *hdr;
6961
6962 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6963 if (!msg)
6964 return;
6965
6966 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
6967 if (!hdr) {
6968 nlmsg_free(msg);
6969 return;
6970 }
6971
6972 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6973 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6974 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6975
6976 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
6977 if (!rekey_attr)
6978 goto nla_put_failure;
6979
6980 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
6981 NL80211_REPLAY_CTR_LEN, replay_ctr);
6982
6983 nla_nest_end(msg, rekey_attr);
6984
6985 if (genlmsg_end(msg, hdr) < 0) {
6986 nlmsg_free(msg);
6987 return;
6988 }
6989
6990 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6991 nl80211_mlme_mcgrp.id, gfp);
6992 return;
6993
6994 nla_put_failure:
6995 genlmsg_cancel(msg, hdr);
6996 nlmsg_free(msg);
6997 }
6998
6999 void
7000 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7001 struct net_device *netdev, const u8 *peer,
7002 u32 num_packets, gfp_t gfp)
7003 {
7004 struct sk_buff *msg;
7005 struct nlattr *pinfoattr;
7006 void *hdr;
7007
7008 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7009 if (!msg)
7010 return;
7011
7012 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7013 if (!hdr) {
7014 nlmsg_free(msg);
7015 return;
7016 }
7017
7018 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7019 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7020 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7021
7022 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7023 if (!pinfoattr)
7024 goto nla_put_failure;
7025
7026 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7027
7028 nla_nest_end(msg, pinfoattr);
7029
7030 if (genlmsg_end(msg, hdr) < 0) {
7031 nlmsg_free(msg);
7032 return;
7033 }
7034
7035 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7036 nl80211_mlme_mcgrp.id, gfp);
7037 return;
7038
7039 nla_put_failure:
7040 genlmsg_cancel(msg, hdr);
7041 nlmsg_free(msg);
7042 }
7043
7044 static int nl80211_netlink_notify(struct notifier_block * nb,
7045 unsigned long state,
7046 void *_notify)
7047 {
7048 struct netlink_notify *notify = _notify;
7049 struct cfg80211_registered_device *rdev;
7050 struct wireless_dev *wdev;
7051
7052 if (state != NETLINK_URELEASE)
7053 return NOTIFY_DONE;
7054
7055 rcu_read_lock();
7056
7057 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7058 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7059 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7060
7061 rcu_read_unlock();
7062
7063 return NOTIFY_DONE;
7064 }
7065
7066 static struct notifier_block nl80211_netlink_notifier = {
7067 .notifier_call = nl80211_netlink_notify,
7068 };
7069
7070 /* initialisation/exit functions */
7071
7072 int nl80211_init(void)
7073 {
7074 int err;
7075
7076 err = genl_register_family_with_ops(&nl80211_fam,
7077 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7078 if (err)
7079 return err;
7080
7081 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7082 if (err)
7083 goto err_out;
7084
7085 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7086 if (err)
7087 goto err_out;
7088
7089 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7090 if (err)
7091 goto err_out;
7092
7093 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7094 if (err)
7095 goto err_out;
7096
7097 #ifdef CONFIG_NL80211_TESTMODE
7098 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7099 if (err)
7100 goto err_out;
7101 #endif
7102
7103 err = netlink_register_notifier(&nl80211_netlink_notifier);
7104 if (err)
7105 goto err_out;
7106
7107 return 0;
7108 err_out:
7109 genl_unregister_family(&nl80211_fam);
7110 return err;
7111 }
7112
7113 void nl80211_exit(void)
7114 {
7115 netlink_unregister_notifier(&nl80211_netlink_notifier);
7116 genl_unregister_family(&nl80211_fam);
7117 }
Linux kernel - Deliverables
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