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