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Merge branches 'fixes', 'pgt-next' and 'versatile' into devel
[mirror_ubuntu-bionic-kernel.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
128 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
129 .len = NL80211_HT_CAPABILITY_LEN },
130
131 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
132 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
133 .len = IEEE80211_MAX_DATA_LEN },
134 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
135 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
136
137 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
138 .len = IEEE80211_MAX_SSID_LEN },
139 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
140 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
141 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
142 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
143 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
144 [NL80211_ATTR_STA_FLAGS2] = {
145 .len = sizeof(struct nl80211_sta_flag_update),
146 },
147 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
148 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
149 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
150 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
151 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
152 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
153 [NL80211_ATTR_PID] = { .type = NLA_U32 },
154 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
155 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
156 .len = WLAN_PMKID_LEN },
157 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
158 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
159 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
160 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
161 .len = IEEE80211_MAX_DATA_LEN },
162 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
163 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
164 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
165 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
166 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
167 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
168 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
169 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
170 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
171 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
172 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
173 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
174 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
175 };
176
177 /* policy for the key attributes */
178 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
179 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
180 [NL80211_KEY_IDX] = { .type = NLA_U8 },
181 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
182 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
183 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
184 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
185 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
186 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
187 };
188
189 /* policy for the key default flags */
190 static const struct nla_policy
191 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
192 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
193 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
194 };
195
196 /* ifidx get helper */
197 static int nl80211_get_ifidx(struct netlink_callback *cb)
198 {
199 int res;
200
201 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
202 nl80211_fam.attrbuf, nl80211_fam.maxattr,
203 nl80211_policy);
204 if (res)
205 return res;
206
207 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
208 return -EINVAL;
209
210 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
211 if (!res)
212 return -EINVAL;
213 return res;
214 }
215
216 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
217 struct netlink_callback *cb,
218 struct cfg80211_registered_device **rdev,
219 struct net_device **dev)
220 {
221 int ifidx = cb->args[0];
222 int err;
223
224 if (!ifidx)
225 ifidx = nl80211_get_ifidx(cb);
226 if (ifidx < 0)
227 return ifidx;
228
229 cb->args[0] = ifidx;
230
231 rtnl_lock();
232
233 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
234 if (!*dev) {
235 err = -ENODEV;
236 goto out_rtnl;
237 }
238
239 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
240 if (IS_ERR(*rdev)) {
241 err = PTR_ERR(*rdev);
242 goto out_rtnl;
243 }
244
245 return 0;
246 out_rtnl:
247 rtnl_unlock();
248 return err;
249 }
250
251 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
252 {
253 cfg80211_unlock_rdev(rdev);
254 rtnl_unlock();
255 }
256
257 /* IE validation */
258 static bool is_valid_ie_attr(const struct nlattr *attr)
259 {
260 const u8 *pos;
261 int len;
262
263 if (!attr)
264 return true;
265
266 pos = nla_data(attr);
267 len = nla_len(attr);
268
269 while (len) {
270 u8 elemlen;
271
272 if (len < 2)
273 return false;
274 len -= 2;
275
276 elemlen = pos[1];
277 if (elemlen > len)
278 return false;
279
280 len -= elemlen;
281 pos += 2 + elemlen;
282 }
283
284 return true;
285 }
286
287 /* message building helper */
288 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
289 int flags, u8 cmd)
290 {
291 /* since there is no private header just add the generic one */
292 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
293 }
294
295 static int nl80211_msg_put_channel(struct sk_buff *msg,
296 struct ieee80211_channel *chan)
297 {
298 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
299 chan->center_freq);
300
301 if (chan->flags & IEEE80211_CHAN_DISABLED)
302 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
303 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
304 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
305 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
306 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
307 if (chan->flags & IEEE80211_CHAN_RADAR)
308 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
309
310 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
311 DBM_TO_MBM(chan->max_power));
312
313 return 0;
314
315 nla_put_failure:
316 return -ENOBUFS;
317 }
318
319 /* netlink command implementations */
320
321 struct key_parse {
322 struct key_params p;
323 int idx;
324 int type;
325 bool def, defmgmt;
326 bool def_uni, def_multi;
327 };
328
329 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
330 {
331 struct nlattr *tb[NL80211_KEY_MAX + 1];
332 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
333 nl80211_key_policy);
334 if (err)
335 return err;
336
337 k->def = !!tb[NL80211_KEY_DEFAULT];
338 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
339
340 if (k->def) {
341 k->def_uni = true;
342 k->def_multi = true;
343 }
344 if (k->defmgmt)
345 k->def_multi = true;
346
347 if (tb[NL80211_KEY_IDX])
348 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
349
350 if (tb[NL80211_KEY_DATA]) {
351 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
352 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
353 }
354
355 if (tb[NL80211_KEY_SEQ]) {
356 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
357 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
358 }
359
360 if (tb[NL80211_KEY_CIPHER])
361 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
362
363 if (tb[NL80211_KEY_TYPE]) {
364 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
365 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
366 return -EINVAL;
367 }
368
369 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
370 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
371 int err = nla_parse_nested(kdt,
372 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
373 tb[NL80211_KEY_DEFAULT_TYPES],
374 nl80211_key_default_policy);
375 if (err)
376 return err;
377
378 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
379 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
380 }
381
382 return 0;
383 }
384
385 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
386 {
387 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
388 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
389 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
390 }
391
392 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
393 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
394 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
395 }
396
397 if (info->attrs[NL80211_ATTR_KEY_IDX])
398 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
399
400 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
401 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
402
403 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
404 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
405
406 if (k->def) {
407 k->def_uni = true;
408 k->def_multi = true;
409 }
410 if (k->defmgmt)
411 k->def_multi = true;
412
413 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
414 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
415 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
416 return -EINVAL;
417 }
418
419 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
420 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
421 int err = nla_parse_nested(
422 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
423 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
424 nl80211_key_default_policy);
425 if (err)
426 return err;
427
428 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
429 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
430 }
431
432 return 0;
433 }
434
435 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
436 {
437 int err;
438
439 memset(k, 0, sizeof(*k));
440 k->idx = -1;
441 k->type = -1;
442
443 if (info->attrs[NL80211_ATTR_KEY])
444 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
445 else
446 err = nl80211_parse_key_old(info, k);
447
448 if (err)
449 return err;
450
451 if (k->def && k->defmgmt)
452 return -EINVAL;
453
454 if (k->defmgmt) {
455 if (k->def_uni || !k->def_multi)
456 return -EINVAL;
457 }
458
459 if (k->idx != -1) {
460 if (k->defmgmt) {
461 if (k->idx < 4 || k->idx > 5)
462 return -EINVAL;
463 } else if (k->def) {
464 if (k->idx < 0 || k->idx > 3)
465 return -EINVAL;
466 } else {
467 if (k->idx < 0 || k->idx > 5)
468 return -EINVAL;
469 }
470 }
471
472 return 0;
473 }
474
475 static struct cfg80211_cached_keys *
476 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
477 struct nlattr *keys)
478 {
479 struct key_parse parse;
480 struct nlattr *key;
481 struct cfg80211_cached_keys *result;
482 int rem, err, def = 0;
483
484 result = kzalloc(sizeof(*result), GFP_KERNEL);
485 if (!result)
486 return ERR_PTR(-ENOMEM);
487
488 result->def = -1;
489 result->defmgmt = -1;
490
491 nla_for_each_nested(key, keys, rem) {
492 memset(&parse, 0, sizeof(parse));
493 parse.idx = -1;
494
495 err = nl80211_parse_key_new(key, &parse);
496 if (err)
497 goto error;
498 err = -EINVAL;
499 if (!parse.p.key)
500 goto error;
501 if (parse.idx < 0 || parse.idx > 4)
502 goto error;
503 if (parse.def) {
504 if (def)
505 goto error;
506 def = 1;
507 result->def = parse.idx;
508 if (!parse.def_uni || !parse.def_multi)
509 goto error;
510 } else if (parse.defmgmt)
511 goto error;
512 err = cfg80211_validate_key_settings(rdev, &parse.p,
513 parse.idx, false, NULL);
514 if (err)
515 goto error;
516 result->params[parse.idx].cipher = parse.p.cipher;
517 result->params[parse.idx].key_len = parse.p.key_len;
518 result->params[parse.idx].key = result->data[parse.idx];
519 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
520 }
521
522 return result;
523 error:
524 kfree(result);
525 return ERR_PTR(err);
526 }
527
528 static int nl80211_key_allowed(struct wireless_dev *wdev)
529 {
530 ASSERT_WDEV_LOCK(wdev);
531
532 switch (wdev->iftype) {
533 case NL80211_IFTYPE_AP:
534 case NL80211_IFTYPE_AP_VLAN:
535 case NL80211_IFTYPE_P2P_GO:
536 break;
537 case NL80211_IFTYPE_ADHOC:
538 if (!wdev->current_bss)
539 return -ENOLINK;
540 break;
541 case NL80211_IFTYPE_STATION:
542 case NL80211_IFTYPE_P2P_CLIENT:
543 if (wdev->sme_state != CFG80211_SME_CONNECTED)
544 return -ENOLINK;
545 break;
546 default:
547 return -EINVAL;
548 }
549
550 return 0;
551 }
552
553 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
554 struct cfg80211_registered_device *dev)
555 {
556 void *hdr;
557 struct nlattr *nl_bands, *nl_band;
558 struct nlattr *nl_freqs, *nl_freq;
559 struct nlattr *nl_rates, *nl_rate;
560 struct nlattr *nl_modes;
561 struct nlattr *nl_cmds;
562 enum ieee80211_band band;
563 struct ieee80211_channel *chan;
564 struct ieee80211_rate *rate;
565 int i;
566 u16 ifmodes = dev->wiphy.interface_modes;
567 const struct ieee80211_txrx_stypes *mgmt_stypes =
568 dev->wiphy.mgmt_stypes;
569
570 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
571 if (!hdr)
572 return -1;
573
574 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
575 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
576
577 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
578 cfg80211_rdev_list_generation);
579
580 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
581 dev->wiphy.retry_short);
582 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
583 dev->wiphy.retry_long);
584 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
585 dev->wiphy.frag_threshold);
586 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
587 dev->wiphy.rts_threshold);
588 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
589 dev->wiphy.coverage_class);
590 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
591 dev->wiphy.max_scan_ssids);
592 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
593 dev->wiphy.max_scan_ie_len);
594
595 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
596 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
597
598 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
599 sizeof(u32) * dev->wiphy.n_cipher_suites,
600 dev->wiphy.cipher_suites);
601
602 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
603 dev->wiphy.max_num_pmkids);
604
605 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
606 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
607
608 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
609 dev->wiphy.available_antennas_tx);
610 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
611 dev->wiphy.available_antennas_rx);
612
613 if ((dev->wiphy.available_antennas_tx ||
614 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
615 u32 tx_ant = 0, rx_ant = 0;
616 int res;
617 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
618 if (!res) {
619 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
620 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
621 }
622 }
623
624 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
625 if (!nl_modes)
626 goto nla_put_failure;
627
628 i = 0;
629 while (ifmodes) {
630 if (ifmodes & 1)
631 NLA_PUT_FLAG(msg, i);
632 ifmodes >>= 1;
633 i++;
634 }
635
636 nla_nest_end(msg, nl_modes);
637
638 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
639 if (!nl_bands)
640 goto nla_put_failure;
641
642 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
643 if (!dev->wiphy.bands[band])
644 continue;
645
646 nl_band = nla_nest_start(msg, band);
647 if (!nl_band)
648 goto nla_put_failure;
649
650 /* add HT info */
651 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
652 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
653 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
654 &dev->wiphy.bands[band]->ht_cap.mcs);
655 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
656 dev->wiphy.bands[band]->ht_cap.cap);
657 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
658 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
659 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
660 dev->wiphy.bands[band]->ht_cap.ampdu_density);
661 }
662
663 /* add frequencies */
664 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
665 if (!nl_freqs)
666 goto nla_put_failure;
667
668 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
669 nl_freq = nla_nest_start(msg, i);
670 if (!nl_freq)
671 goto nla_put_failure;
672
673 chan = &dev->wiphy.bands[band]->channels[i];
674
675 if (nl80211_msg_put_channel(msg, chan))
676 goto nla_put_failure;
677
678 nla_nest_end(msg, nl_freq);
679 }
680
681 nla_nest_end(msg, nl_freqs);
682
683 /* add bitrates */
684 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
685 if (!nl_rates)
686 goto nla_put_failure;
687
688 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
689 nl_rate = nla_nest_start(msg, i);
690 if (!nl_rate)
691 goto nla_put_failure;
692
693 rate = &dev->wiphy.bands[band]->bitrates[i];
694 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
695 rate->bitrate);
696 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
697 NLA_PUT_FLAG(msg,
698 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
699
700 nla_nest_end(msg, nl_rate);
701 }
702
703 nla_nest_end(msg, nl_rates);
704
705 nla_nest_end(msg, nl_band);
706 }
707 nla_nest_end(msg, nl_bands);
708
709 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
710 if (!nl_cmds)
711 goto nla_put_failure;
712
713 i = 0;
714 #define CMD(op, n) \
715 do { \
716 if (dev->ops->op) { \
717 i++; \
718 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
719 } \
720 } while (0)
721
722 CMD(add_virtual_intf, NEW_INTERFACE);
723 CMD(change_virtual_intf, SET_INTERFACE);
724 CMD(add_key, NEW_KEY);
725 CMD(add_beacon, NEW_BEACON);
726 CMD(add_station, NEW_STATION);
727 CMD(add_mpath, NEW_MPATH);
728 CMD(update_mesh_config, SET_MESH_CONFIG);
729 CMD(change_bss, SET_BSS);
730 CMD(auth, AUTHENTICATE);
731 CMD(assoc, ASSOCIATE);
732 CMD(deauth, DEAUTHENTICATE);
733 CMD(disassoc, DISASSOCIATE);
734 CMD(join_ibss, JOIN_IBSS);
735 CMD(join_mesh, JOIN_MESH);
736 CMD(set_pmksa, SET_PMKSA);
737 CMD(del_pmksa, DEL_PMKSA);
738 CMD(flush_pmksa, FLUSH_PMKSA);
739 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
740 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
741 CMD(mgmt_tx, FRAME);
742 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
743 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
744 i++;
745 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
746 }
747 CMD(set_channel, SET_CHANNEL);
748 CMD(set_wds_peer, SET_WDS_PEER);
749
750 #undef CMD
751
752 if (dev->ops->connect || dev->ops->auth) {
753 i++;
754 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
755 }
756
757 if (dev->ops->disconnect || dev->ops->deauth) {
758 i++;
759 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
760 }
761
762 nla_nest_end(msg, nl_cmds);
763
764 if (dev->ops->remain_on_channel)
765 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
766 dev->wiphy.max_remain_on_channel_duration);
767
768 /* for now at least assume all drivers have it */
769 if (dev->ops->mgmt_tx)
770 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
771
772 if (mgmt_stypes) {
773 u16 stypes;
774 struct nlattr *nl_ftypes, *nl_ifs;
775 enum nl80211_iftype ift;
776
777 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
778 if (!nl_ifs)
779 goto nla_put_failure;
780
781 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
782 nl_ftypes = nla_nest_start(msg, ift);
783 if (!nl_ftypes)
784 goto nla_put_failure;
785 i = 0;
786 stypes = mgmt_stypes[ift].tx;
787 while (stypes) {
788 if (stypes & 1)
789 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
790 (i << 4) | IEEE80211_FTYPE_MGMT);
791 stypes >>= 1;
792 i++;
793 }
794 nla_nest_end(msg, nl_ftypes);
795 }
796
797 nla_nest_end(msg, nl_ifs);
798
799 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
800 if (!nl_ifs)
801 goto nla_put_failure;
802
803 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
804 nl_ftypes = nla_nest_start(msg, ift);
805 if (!nl_ftypes)
806 goto nla_put_failure;
807 i = 0;
808 stypes = mgmt_stypes[ift].rx;
809 while (stypes) {
810 if (stypes & 1)
811 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
812 (i << 4) | IEEE80211_FTYPE_MGMT);
813 stypes >>= 1;
814 i++;
815 }
816 nla_nest_end(msg, nl_ftypes);
817 }
818 nla_nest_end(msg, nl_ifs);
819 }
820
821 return genlmsg_end(msg, hdr);
822
823 nla_put_failure:
824 genlmsg_cancel(msg, hdr);
825 return -EMSGSIZE;
826 }
827
828 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
829 {
830 int idx = 0;
831 int start = cb->args[0];
832 struct cfg80211_registered_device *dev;
833
834 mutex_lock(&cfg80211_mutex);
835 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
836 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
837 continue;
838 if (++idx <= start)
839 continue;
840 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
841 cb->nlh->nlmsg_seq, NLM_F_MULTI,
842 dev) < 0) {
843 idx--;
844 break;
845 }
846 }
847 mutex_unlock(&cfg80211_mutex);
848
849 cb->args[0] = idx;
850
851 return skb->len;
852 }
853
854 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
855 {
856 struct sk_buff *msg;
857 struct cfg80211_registered_device *dev = info->user_ptr[0];
858
859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
860 if (!msg)
861 return -ENOMEM;
862
863 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
864 nlmsg_free(msg);
865 return -ENOBUFS;
866 }
867
868 return genlmsg_reply(msg, info);
869 }
870
871 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
872 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
873 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
874 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
875 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
876 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
877 };
878
879 static int parse_txq_params(struct nlattr *tb[],
880 struct ieee80211_txq_params *txq_params)
881 {
882 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
883 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
884 !tb[NL80211_TXQ_ATTR_AIFS])
885 return -EINVAL;
886
887 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
888 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
889 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
890 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
891 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
892
893 return 0;
894 }
895
896 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
897 {
898 /*
899 * You can only set the channel explicitly for AP, mesh
900 * and WDS type interfaces; all others have their channel
901 * managed via their respective "establish a connection"
902 * command (connect, join, ...)
903 *
904 * Monitors are special as they are normally slaved to
905 * whatever else is going on, so they behave as though
906 * you tried setting the wiphy channel itself.
907 */
908 return !wdev ||
909 wdev->iftype == NL80211_IFTYPE_AP ||
910 wdev->iftype == NL80211_IFTYPE_WDS ||
911 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
912 wdev->iftype == NL80211_IFTYPE_MONITOR ||
913 wdev->iftype == NL80211_IFTYPE_P2P_GO;
914 }
915
916 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
917 struct wireless_dev *wdev,
918 struct genl_info *info)
919 {
920 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
921 u32 freq;
922 int result;
923
924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
925 return -EINVAL;
926
927 if (!nl80211_can_set_dev_channel(wdev))
928 return -EOPNOTSUPP;
929
930 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
931 channel_type = nla_get_u32(info->attrs[
932 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
933 if (channel_type != NL80211_CHAN_NO_HT &&
934 channel_type != NL80211_CHAN_HT20 &&
935 channel_type != NL80211_CHAN_HT40PLUS &&
936 channel_type != NL80211_CHAN_HT40MINUS)
937 return -EINVAL;
938 }
939
940 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
941
942 mutex_lock(&rdev->devlist_mtx);
943 if (wdev) {
944 wdev_lock(wdev);
945 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
946 wdev_unlock(wdev);
947 } else {
948 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
949 }
950 mutex_unlock(&rdev->devlist_mtx);
951
952 return result;
953 }
954
955 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
956 {
957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
958 struct net_device *netdev = info->user_ptr[1];
959
960 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
961 }
962
963 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
964 {
965 struct cfg80211_registered_device *rdev = info->user_ptr[0];
966 struct net_device *dev = info->user_ptr[1];
967 struct wireless_dev *wdev = dev->ieee80211_ptr;
968 const u8 *bssid;
969
970 if (!info->attrs[NL80211_ATTR_MAC])
971 return -EINVAL;
972
973 if (netif_running(dev))
974 return -EBUSY;
975
976 if (!rdev->ops->set_wds_peer)
977 return -EOPNOTSUPP;
978
979 if (wdev->iftype != NL80211_IFTYPE_WDS)
980 return -EOPNOTSUPP;
981
982 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
983 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
984 }
985
986
987 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
988 {
989 struct cfg80211_registered_device *rdev;
990 struct net_device *netdev = NULL;
991 struct wireless_dev *wdev;
992 int result = 0, rem_txq_params = 0;
993 struct nlattr *nl_txq_params;
994 u32 changed;
995 u8 retry_short = 0, retry_long = 0;
996 u32 frag_threshold = 0, rts_threshold = 0;
997 u8 coverage_class = 0;
998
999 /*
1000 * Try to find the wiphy and netdev. Normally this
1001 * function shouldn't need the netdev, but this is
1002 * done for backward compatibility -- previously
1003 * setting the channel was done per wiphy, but now
1004 * it is per netdev. Previous userland like hostapd
1005 * also passed a netdev to set_wiphy, so that it is
1006 * possible to let that go to the right netdev!
1007 */
1008 mutex_lock(&cfg80211_mutex);
1009
1010 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1011 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1012
1013 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1014 if (netdev && netdev->ieee80211_ptr) {
1015 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1016 mutex_lock(&rdev->mtx);
1017 } else
1018 netdev = NULL;
1019 }
1020
1021 if (!netdev) {
1022 rdev = __cfg80211_rdev_from_info(info);
1023 if (IS_ERR(rdev)) {
1024 mutex_unlock(&cfg80211_mutex);
1025 return PTR_ERR(rdev);
1026 }
1027 wdev = NULL;
1028 netdev = NULL;
1029 result = 0;
1030
1031 mutex_lock(&rdev->mtx);
1032 } else if (netif_running(netdev) &&
1033 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1034 wdev = netdev->ieee80211_ptr;
1035 else
1036 wdev = NULL;
1037
1038 /*
1039 * end workaround code, by now the rdev is available
1040 * and locked, and wdev may or may not be NULL.
1041 */
1042
1043 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1044 result = cfg80211_dev_rename(
1045 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1046
1047 mutex_unlock(&cfg80211_mutex);
1048
1049 if (result)
1050 goto bad_res;
1051
1052 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1053 struct ieee80211_txq_params txq_params;
1054 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1055
1056 if (!rdev->ops->set_txq_params) {
1057 result = -EOPNOTSUPP;
1058 goto bad_res;
1059 }
1060
1061 nla_for_each_nested(nl_txq_params,
1062 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1063 rem_txq_params) {
1064 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1065 nla_data(nl_txq_params),
1066 nla_len(nl_txq_params),
1067 txq_params_policy);
1068 result = parse_txq_params(tb, &txq_params);
1069 if (result)
1070 goto bad_res;
1071
1072 result = rdev->ops->set_txq_params(&rdev->wiphy,
1073 &txq_params);
1074 if (result)
1075 goto bad_res;
1076 }
1077 }
1078
1079 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1080 result = __nl80211_set_channel(rdev, wdev, info);
1081 if (result)
1082 goto bad_res;
1083 }
1084
1085 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1086 enum nl80211_tx_power_setting type;
1087 int idx, mbm = 0;
1088
1089 if (!rdev->ops->set_tx_power) {
1090 result = -EOPNOTSUPP;
1091 goto bad_res;
1092 }
1093
1094 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1095 type = nla_get_u32(info->attrs[idx]);
1096
1097 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1098 (type != NL80211_TX_POWER_AUTOMATIC)) {
1099 result = -EINVAL;
1100 goto bad_res;
1101 }
1102
1103 if (type != NL80211_TX_POWER_AUTOMATIC) {
1104 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1105 mbm = nla_get_u32(info->attrs[idx]);
1106 }
1107
1108 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1109 if (result)
1110 goto bad_res;
1111 }
1112
1113 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1114 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1115 u32 tx_ant, rx_ant;
1116 if ((!rdev->wiphy.available_antennas_tx &&
1117 !rdev->wiphy.available_antennas_rx) ||
1118 !rdev->ops->set_antenna) {
1119 result = -EOPNOTSUPP;
1120 goto bad_res;
1121 }
1122
1123 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1124 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1125
1126 /* reject antenna configurations which don't match the
1127 * available antenna masks, except for the "all" mask */
1128 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1129 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1130 result = -EINVAL;
1131 goto bad_res;
1132 }
1133
1134 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1135 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1136
1137 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1138 if (result)
1139 goto bad_res;
1140 }
1141
1142 changed = 0;
1143
1144 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1145 retry_short = nla_get_u8(
1146 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1147 if (retry_short == 0) {
1148 result = -EINVAL;
1149 goto bad_res;
1150 }
1151 changed |= WIPHY_PARAM_RETRY_SHORT;
1152 }
1153
1154 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1155 retry_long = nla_get_u8(
1156 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1157 if (retry_long == 0) {
1158 result = -EINVAL;
1159 goto bad_res;
1160 }
1161 changed |= WIPHY_PARAM_RETRY_LONG;
1162 }
1163
1164 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1165 frag_threshold = nla_get_u32(
1166 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1167 if (frag_threshold < 256) {
1168 result = -EINVAL;
1169 goto bad_res;
1170 }
1171 if (frag_threshold != (u32) -1) {
1172 /*
1173 * Fragments (apart from the last one) are required to
1174 * have even length. Make the fragmentation code
1175 * simpler by stripping LSB should someone try to use
1176 * odd threshold value.
1177 */
1178 frag_threshold &= ~0x1;
1179 }
1180 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1181 }
1182
1183 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1184 rts_threshold = nla_get_u32(
1185 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1186 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1187 }
1188
1189 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1190 coverage_class = nla_get_u8(
1191 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1192 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1193 }
1194
1195 if (changed) {
1196 u8 old_retry_short, old_retry_long;
1197 u32 old_frag_threshold, old_rts_threshold;
1198 u8 old_coverage_class;
1199
1200 if (!rdev->ops->set_wiphy_params) {
1201 result = -EOPNOTSUPP;
1202 goto bad_res;
1203 }
1204
1205 old_retry_short = rdev->wiphy.retry_short;
1206 old_retry_long = rdev->wiphy.retry_long;
1207 old_frag_threshold = rdev->wiphy.frag_threshold;
1208 old_rts_threshold = rdev->wiphy.rts_threshold;
1209 old_coverage_class = rdev->wiphy.coverage_class;
1210
1211 if (changed & WIPHY_PARAM_RETRY_SHORT)
1212 rdev->wiphy.retry_short = retry_short;
1213 if (changed & WIPHY_PARAM_RETRY_LONG)
1214 rdev->wiphy.retry_long = retry_long;
1215 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1216 rdev->wiphy.frag_threshold = frag_threshold;
1217 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1218 rdev->wiphy.rts_threshold = rts_threshold;
1219 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1220 rdev->wiphy.coverage_class = coverage_class;
1221
1222 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1223 if (result) {
1224 rdev->wiphy.retry_short = old_retry_short;
1225 rdev->wiphy.retry_long = old_retry_long;
1226 rdev->wiphy.frag_threshold = old_frag_threshold;
1227 rdev->wiphy.rts_threshold = old_rts_threshold;
1228 rdev->wiphy.coverage_class = old_coverage_class;
1229 }
1230 }
1231
1232 bad_res:
1233 mutex_unlock(&rdev->mtx);
1234 if (netdev)
1235 dev_put(netdev);
1236 return result;
1237 }
1238
1239
1240 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1241 struct cfg80211_registered_device *rdev,
1242 struct net_device *dev)
1243 {
1244 void *hdr;
1245
1246 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1247 if (!hdr)
1248 return -1;
1249
1250 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1251 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1252 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1253 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1254
1255 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1256 rdev->devlist_generation ^
1257 (cfg80211_rdev_list_generation << 2));
1258
1259 return genlmsg_end(msg, hdr);
1260
1261 nla_put_failure:
1262 genlmsg_cancel(msg, hdr);
1263 return -EMSGSIZE;
1264 }
1265
1266 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1267 {
1268 int wp_idx = 0;
1269 int if_idx = 0;
1270 int wp_start = cb->args[0];
1271 int if_start = cb->args[1];
1272 struct cfg80211_registered_device *rdev;
1273 struct wireless_dev *wdev;
1274
1275 mutex_lock(&cfg80211_mutex);
1276 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1277 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1278 continue;
1279 if (wp_idx < wp_start) {
1280 wp_idx++;
1281 continue;
1282 }
1283 if_idx = 0;
1284
1285 mutex_lock(&rdev->devlist_mtx);
1286 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1287 if (if_idx < if_start) {
1288 if_idx++;
1289 continue;
1290 }
1291 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1292 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1293 rdev, wdev->netdev) < 0) {
1294 mutex_unlock(&rdev->devlist_mtx);
1295 goto out;
1296 }
1297 if_idx++;
1298 }
1299 mutex_unlock(&rdev->devlist_mtx);
1300
1301 wp_idx++;
1302 }
1303 out:
1304 mutex_unlock(&cfg80211_mutex);
1305
1306 cb->args[0] = wp_idx;
1307 cb->args[1] = if_idx;
1308
1309 return skb->len;
1310 }
1311
1312 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1313 {
1314 struct sk_buff *msg;
1315 struct cfg80211_registered_device *dev = info->user_ptr[0];
1316 struct net_device *netdev = info->user_ptr[1];
1317
1318 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1319 if (!msg)
1320 return -ENOMEM;
1321
1322 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1323 dev, netdev) < 0) {
1324 nlmsg_free(msg);
1325 return -ENOBUFS;
1326 }
1327
1328 return genlmsg_reply(msg, info);
1329 }
1330
1331 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1332 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1333 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1334 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1335 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1336 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1337 };
1338
1339 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1340 {
1341 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1342 int flag;
1343
1344 *mntrflags = 0;
1345
1346 if (!nla)
1347 return -EINVAL;
1348
1349 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1350 nla, mntr_flags_policy))
1351 return -EINVAL;
1352
1353 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1354 if (flags[flag])
1355 *mntrflags |= (1<<flag);
1356
1357 return 0;
1358 }
1359
1360 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1361 struct net_device *netdev, u8 use_4addr,
1362 enum nl80211_iftype iftype)
1363 {
1364 if (!use_4addr) {
1365 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1366 return -EBUSY;
1367 return 0;
1368 }
1369
1370 switch (iftype) {
1371 case NL80211_IFTYPE_AP_VLAN:
1372 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1373 return 0;
1374 break;
1375 case NL80211_IFTYPE_STATION:
1376 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1377 return 0;
1378 break;
1379 default:
1380 break;
1381 }
1382
1383 return -EOPNOTSUPP;
1384 }
1385
1386 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1387 {
1388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1389 struct vif_params params;
1390 int err;
1391 enum nl80211_iftype otype, ntype;
1392 struct net_device *dev = info->user_ptr[1];
1393 u32 _flags, *flags = NULL;
1394 bool change = false;
1395
1396 memset(&params, 0, sizeof(params));
1397
1398 otype = ntype = dev->ieee80211_ptr->iftype;
1399
1400 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1401 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1402 if (otype != ntype)
1403 change = true;
1404 if (ntype > NL80211_IFTYPE_MAX)
1405 return -EINVAL;
1406 }
1407
1408 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1409 struct wireless_dev *wdev = dev->ieee80211_ptr;
1410
1411 if (ntype != NL80211_IFTYPE_MESH_POINT)
1412 return -EINVAL;
1413 if (netif_running(dev))
1414 return -EBUSY;
1415
1416 wdev_lock(wdev);
1417 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1418 IEEE80211_MAX_MESH_ID_LEN);
1419 wdev->mesh_id_up_len =
1420 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1421 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1422 wdev->mesh_id_up_len);
1423 wdev_unlock(wdev);
1424 }
1425
1426 if (info->attrs[NL80211_ATTR_4ADDR]) {
1427 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1428 change = true;
1429 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1430 if (err)
1431 return err;
1432 } else {
1433 params.use_4addr = -1;
1434 }
1435
1436 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1437 if (ntype != NL80211_IFTYPE_MONITOR)
1438 return -EINVAL;
1439 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1440 &_flags);
1441 if (err)
1442 return err;
1443
1444 flags = &_flags;
1445 change = true;
1446 }
1447
1448 if (change)
1449 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1450 else
1451 err = 0;
1452
1453 if (!err && params.use_4addr != -1)
1454 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1455
1456 return err;
1457 }
1458
1459 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1460 {
1461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1462 struct vif_params params;
1463 struct net_device *dev;
1464 int err;
1465 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1466 u32 flags;
1467
1468 memset(&params, 0, sizeof(params));
1469
1470 if (!info->attrs[NL80211_ATTR_IFNAME])
1471 return -EINVAL;
1472
1473 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1474 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1475 if (type > NL80211_IFTYPE_MAX)
1476 return -EINVAL;
1477 }
1478
1479 if (!rdev->ops->add_virtual_intf ||
1480 !(rdev->wiphy.interface_modes & (1 << type)))
1481 return -EOPNOTSUPP;
1482
1483 if (info->attrs[NL80211_ATTR_4ADDR]) {
1484 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1485 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1486 if (err)
1487 return err;
1488 }
1489
1490 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1491 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1492 &flags);
1493 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1494 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1495 type, err ? NULL : &flags, &params);
1496 if (IS_ERR(dev))
1497 return PTR_ERR(dev);
1498
1499 if (type == NL80211_IFTYPE_MESH_POINT &&
1500 info->attrs[NL80211_ATTR_MESH_ID]) {
1501 struct wireless_dev *wdev = dev->ieee80211_ptr;
1502
1503 wdev_lock(wdev);
1504 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1505 IEEE80211_MAX_MESH_ID_LEN);
1506 wdev->mesh_id_up_len =
1507 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1508 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1509 wdev->mesh_id_up_len);
1510 wdev_unlock(wdev);
1511 }
1512
1513 return 0;
1514 }
1515
1516 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1517 {
1518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1519 struct net_device *dev = info->user_ptr[1];
1520
1521 if (!rdev->ops->del_virtual_intf)
1522 return -EOPNOTSUPP;
1523
1524 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1525 }
1526
1527 struct get_key_cookie {
1528 struct sk_buff *msg;
1529 int error;
1530 int idx;
1531 };
1532
1533 static void get_key_callback(void *c, struct key_params *params)
1534 {
1535 struct nlattr *key;
1536 struct get_key_cookie *cookie = c;
1537
1538 if (params->key)
1539 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1540 params->key_len, params->key);
1541
1542 if (params->seq)
1543 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1544 params->seq_len, params->seq);
1545
1546 if (params->cipher)
1547 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1548 params->cipher);
1549
1550 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1551 if (!key)
1552 goto nla_put_failure;
1553
1554 if (params->key)
1555 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1556 params->key_len, params->key);
1557
1558 if (params->seq)
1559 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1560 params->seq_len, params->seq);
1561
1562 if (params->cipher)
1563 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1564 params->cipher);
1565
1566 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1567
1568 nla_nest_end(cookie->msg, key);
1569
1570 return;
1571 nla_put_failure:
1572 cookie->error = 1;
1573 }
1574
1575 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1576 {
1577 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1578 int err;
1579 struct net_device *dev = info->user_ptr[1];
1580 u8 key_idx = 0;
1581 const u8 *mac_addr = NULL;
1582 bool pairwise;
1583 struct get_key_cookie cookie = {
1584 .error = 0,
1585 };
1586 void *hdr;
1587 struct sk_buff *msg;
1588
1589 if (info->attrs[NL80211_ATTR_KEY_IDX])
1590 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1591
1592 if (key_idx > 5)
1593 return -EINVAL;
1594
1595 if (info->attrs[NL80211_ATTR_MAC])
1596 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1597
1598 pairwise = !!mac_addr;
1599 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1600 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1601 if (kt >= NUM_NL80211_KEYTYPES)
1602 return -EINVAL;
1603 if (kt != NL80211_KEYTYPE_GROUP &&
1604 kt != NL80211_KEYTYPE_PAIRWISE)
1605 return -EINVAL;
1606 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1607 }
1608
1609 if (!rdev->ops->get_key)
1610 return -EOPNOTSUPP;
1611
1612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1613 if (!msg)
1614 return -ENOMEM;
1615
1616 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1617 NL80211_CMD_NEW_KEY);
1618 if (IS_ERR(hdr))
1619 return PTR_ERR(hdr);
1620
1621 cookie.msg = msg;
1622 cookie.idx = key_idx;
1623
1624 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1625 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1626 if (mac_addr)
1627 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1628
1629 if (pairwise && mac_addr &&
1630 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1631 return -ENOENT;
1632
1633 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1634 mac_addr, &cookie, get_key_callback);
1635
1636 if (err)
1637 goto free_msg;
1638
1639 if (cookie.error)
1640 goto nla_put_failure;
1641
1642 genlmsg_end(msg, hdr);
1643 return genlmsg_reply(msg, info);
1644
1645 nla_put_failure:
1646 err = -ENOBUFS;
1647 free_msg:
1648 nlmsg_free(msg);
1649 return err;
1650 }
1651
1652 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1653 {
1654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1655 struct key_parse key;
1656 int err;
1657 struct net_device *dev = info->user_ptr[1];
1658
1659 err = nl80211_parse_key(info, &key);
1660 if (err)
1661 return err;
1662
1663 if (key.idx < 0)
1664 return -EINVAL;
1665
1666 /* only support setting default key */
1667 if (!key.def && !key.defmgmt)
1668 return -EINVAL;
1669
1670 wdev_lock(dev->ieee80211_ptr);
1671
1672 if (key.def) {
1673 if (!rdev->ops->set_default_key) {
1674 err = -EOPNOTSUPP;
1675 goto out;
1676 }
1677
1678 err = nl80211_key_allowed(dev->ieee80211_ptr);
1679 if (err)
1680 goto out;
1681
1682 if (!(rdev->wiphy.flags &
1683 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS)) {
1684 if (!key.def_uni || !key.def_multi) {
1685 err = -EOPNOTSUPP;
1686 goto out;
1687 }
1688 }
1689
1690 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1691 key.def_uni, key.def_multi);
1692
1693 if (err)
1694 goto out;
1695
1696 #ifdef CONFIG_CFG80211_WEXT
1697 dev->ieee80211_ptr->wext.default_key = key.idx;
1698 #endif
1699 } else {
1700 if (key.def_uni || !key.def_multi) {
1701 err = -EINVAL;
1702 goto out;
1703 }
1704
1705 if (!rdev->ops->set_default_mgmt_key) {
1706 err = -EOPNOTSUPP;
1707 goto out;
1708 }
1709
1710 err = nl80211_key_allowed(dev->ieee80211_ptr);
1711 if (err)
1712 goto out;
1713
1714 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1715 dev, key.idx);
1716 if (err)
1717 goto out;
1718
1719 #ifdef CONFIG_CFG80211_WEXT
1720 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1721 #endif
1722 }
1723
1724 out:
1725 wdev_unlock(dev->ieee80211_ptr);
1726
1727 return err;
1728 }
1729
1730 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1731 {
1732 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1733 int err;
1734 struct net_device *dev = info->user_ptr[1];
1735 struct key_parse key;
1736 const u8 *mac_addr = NULL;
1737
1738 err = nl80211_parse_key(info, &key);
1739 if (err)
1740 return err;
1741
1742 if (!key.p.key)
1743 return -EINVAL;
1744
1745 if (info->attrs[NL80211_ATTR_MAC])
1746 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1747
1748 if (key.type == -1) {
1749 if (mac_addr)
1750 key.type = NL80211_KEYTYPE_PAIRWISE;
1751 else
1752 key.type = NL80211_KEYTYPE_GROUP;
1753 }
1754
1755 /* for now */
1756 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1757 key.type != NL80211_KEYTYPE_GROUP)
1758 return -EINVAL;
1759
1760 if (!rdev->ops->add_key)
1761 return -EOPNOTSUPP;
1762
1763 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1764 key.type == NL80211_KEYTYPE_PAIRWISE,
1765 mac_addr))
1766 return -EINVAL;
1767
1768 wdev_lock(dev->ieee80211_ptr);
1769 err = nl80211_key_allowed(dev->ieee80211_ptr);
1770 if (!err)
1771 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1772 key.type == NL80211_KEYTYPE_PAIRWISE,
1773 mac_addr, &key.p);
1774 wdev_unlock(dev->ieee80211_ptr);
1775
1776 return err;
1777 }
1778
1779 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1780 {
1781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1782 int err;
1783 struct net_device *dev = info->user_ptr[1];
1784 u8 *mac_addr = NULL;
1785 struct key_parse key;
1786
1787 err = nl80211_parse_key(info, &key);
1788 if (err)
1789 return err;
1790
1791 if (info->attrs[NL80211_ATTR_MAC])
1792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1793
1794 if (key.type == -1) {
1795 if (mac_addr)
1796 key.type = NL80211_KEYTYPE_PAIRWISE;
1797 else
1798 key.type = NL80211_KEYTYPE_GROUP;
1799 }
1800
1801 /* for now */
1802 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1803 key.type != NL80211_KEYTYPE_GROUP)
1804 return -EINVAL;
1805
1806 if (!rdev->ops->del_key)
1807 return -EOPNOTSUPP;
1808
1809 wdev_lock(dev->ieee80211_ptr);
1810 err = nl80211_key_allowed(dev->ieee80211_ptr);
1811
1812 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1813 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1814 err = -ENOENT;
1815
1816 if (!err)
1817 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1818 key.type == NL80211_KEYTYPE_PAIRWISE,
1819 mac_addr);
1820
1821 #ifdef CONFIG_CFG80211_WEXT
1822 if (!err) {
1823 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1824 dev->ieee80211_ptr->wext.default_key = -1;
1825 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1826 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1827 }
1828 #endif
1829 wdev_unlock(dev->ieee80211_ptr);
1830
1831 return err;
1832 }
1833
1834 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1835 {
1836 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1837 struct beacon_parameters *info);
1838 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1839 struct net_device *dev = info->user_ptr[1];
1840 struct beacon_parameters params;
1841 int haveinfo = 0;
1842
1843 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1844 return -EINVAL;
1845
1846 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1847 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1848 return -EOPNOTSUPP;
1849
1850 switch (info->genlhdr->cmd) {
1851 case NL80211_CMD_NEW_BEACON:
1852 /* these are required for NEW_BEACON */
1853 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1854 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1855 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1856 return -EINVAL;
1857
1858 call = rdev->ops->add_beacon;
1859 break;
1860 case NL80211_CMD_SET_BEACON:
1861 call = rdev->ops->set_beacon;
1862 break;
1863 default:
1864 WARN_ON(1);
1865 return -EOPNOTSUPP;
1866 }
1867
1868 if (!call)
1869 return -EOPNOTSUPP;
1870
1871 memset(&params, 0, sizeof(params));
1872
1873 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1874 params.interval =
1875 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1876 haveinfo = 1;
1877 }
1878
1879 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1880 params.dtim_period =
1881 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1882 haveinfo = 1;
1883 }
1884
1885 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1886 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1887 params.head_len =
1888 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1889 haveinfo = 1;
1890 }
1891
1892 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1893 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1894 params.tail_len =
1895 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1896 haveinfo = 1;
1897 }
1898
1899 if (!haveinfo)
1900 return -EINVAL;
1901
1902 return call(&rdev->wiphy, dev, &params);
1903 }
1904
1905 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1906 {
1907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1908 struct net_device *dev = info->user_ptr[1];
1909
1910 if (!rdev->ops->del_beacon)
1911 return -EOPNOTSUPP;
1912
1913 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1914 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1915 return -EOPNOTSUPP;
1916
1917 return rdev->ops->del_beacon(&rdev->wiphy, dev);
1918 }
1919
1920 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1921 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1922 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1923 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1924 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1925 };
1926
1927 static int parse_station_flags(struct genl_info *info,
1928 struct station_parameters *params)
1929 {
1930 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1931 struct nlattr *nla;
1932 int flag;
1933
1934 /*
1935 * Try parsing the new attribute first so userspace
1936 * can specify both for older kernels.
1937 */
1938 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1939 if (nla) {
1940 struct nl80211_sta_flag_update *sta_flags;
1941
1942 sta_flags = nla_data(nla);
1943 params->sta_flags_mask = sta_flags->mask;
1944 params->sta_flags_set = sta_flags->set;
1945 if ((params->sta_flags_mask |
1946 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1947 return -EINVAL;
1948 return 0;
1949 }
1950
1951 /* if present, parse the old attribute */
1952
1953 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1954 if (!nla)
1955 return 0;
1956
1957 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1958 nla, sta_flags_policy))
1959 return -EINVAL;
1960
1961 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1962 params->sta_flags_mask &= ~1;
1963
1964 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1965 if (flags[flag])
1966 params->sta_flags_set |= (1<<flag);
1967
1968 return 0;
1969 }
1970
1971 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
1972 int attr)
1973 {
1974 struct nlattr *rate;
1975 u16 bitrate;
1976
1977 rate = nla_nest_start(msg, attr);
1978 if (!rate)
1979 goto nla_put_failure;
1980
1981 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
1982 bitrate = cfg80211_calculate_bitrate(info);
1983 if (bitrate > 0)
1984 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1985
1986 if (info->flags & RATE_INFO_FLAGS_MCS)
1987 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
1988 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1989 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1990 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
1991 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1992
1993 nla_nest_end(msg, rate);
1994 return true;
1995
1996 nla_put_failure:
1997 return false;
1998 }
1999
2000 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2001 int flags, struct net_device *dev,
2002 const u8 *mac_addr, struct station_info *sinfo)
2003 {
2004 void *hdr;
2005 struct nlattr *sinfoattr;
2006
2007 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2008 if (!hdr)
2009 return -1;
2010
2011 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2012 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2013
2014 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2015
2016 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2017 if (!sinfoattr)
2018 goto nla_put_failure;
2019 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2020 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2021 sinfo->inactive_time);
2022 if (sinfo->filled & STATION_INFO_RX_BYTES)
2023 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2024 sinfo->rx_bytes);
2025 if (sinfo->filled & STATION_INFO_TX_BYTES)
2026 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2027 sinfo->tx_bytes);
2028 if (sinfo->filled & STATION_INFO_LLID)
2029 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2030 sinfo->llid);
2031 if (sinfo->filled & STATION_INFO_PLID)
2032 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2033 sinfo->plid);
2034 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2035 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2036 sinfo->plink_state);
2037 if (sinfo->filled & STATION_INFO_SIGNAL)
2038 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2039 sinfo->signal);
2040 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2041 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2042 sinfo->signal_avg);
2043 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2044 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2045 NL80211_STA_INFO_TX_BITRATE))
2046 goto nla_put_failure;
2047 }
2048 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2049 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2050 NL80211_STA_INFO_RX_BITRATE))
2051 goto nla_put_failure;
2052 }
2053 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2054 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2055 sinfo->rx_packets);
2056 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2057 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2058 sinfo->tx_packets);
2059 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2060 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2061 sinfo->tx_retries);
2062 if (sinfo->filled & STATION_INFO_TX_FAILED)
2063 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2064 sinfo->tx_failed);
2065 nla_nest_end(msg, sinfoattr);
2066
2067 return genlmsg_end(msg, hdr);
2068
2069 nla_put_failure:
2070 genlmsg_cancel(msg, hdr);
2071 return -EMSGSIZE;
2072 }
2073
2074 static int nl80211_dump_station(struct sk_buff *skb,
2075 struct netlink_callback *cb)
2076 {
2077 struct station_info sinfo;
2078 struct cfg80211_registered_device *dev;
2079 struct net_device *netdev;
2080 u8 mac_addr[ETH_ALEN];
2081 int sta_idx = cb->args[1];
2082 int err;
2083
2084 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2085 if (err)
2086 return err;
2087
2088 if (!dev->ops->dump_station) {
2089 err = -EOPNOTSUPP;
2090 goto out_err;
2091 }
2092
2093 while (1) {
2094 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2095 mac_addr, &sinfo);
2096 if (err == -ENOENT)
2097 break;
2098 if (err)
2099 goto out_err;
2100
2101 if (nl80211_send_station(skb,
2102 NETLINK_CB(cb->skb).pid,
2103 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2104 netdev, mac_addr,
2105 &sinfo) < 0)
2106 goto out;
2107
2108 sta_idx++;
2109 }
2110
2111
2112 out:
2113 cb->args[1] = sta_idx;
2114 err = skb->len;
2115 out_err:
2116 nl80211_finish_netdev_dump(dev);
2117
2118 return err;
2119 }
2120
2121 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2122 {
2123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2124 struct net_device *dev = info->user_ptr[1];
2125 struct station_info sinfo;
2126 struct sk_buff *msg;
2127 u8 *mac_addr = NULL;
2128 int err;
2129
2130 memset(&sinfo, 0, sizeof(sinfo));
2131
2132 if (!info->attrs[NL80211_ATTR_MAC])
2133 return -EINVAL;
2134
2135 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2136
2137 if (!rdev->ops->get_station)
2138 return -EOPNOTSUPP;
2139
2140 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2141 if (err)
2142 return err;
2143
2144 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2145 if (!msg)
2146 return -ENOMEM;
2147
2148 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2149 dev, mac_addr, &sinfo) < 0) {
2150 nlmsg_free(msg);
2151 return -ENOBUFS;
2152 }
2153
2154 return genlmsg_reply(msg, info);
2155 }
2156
2157 /*
2158 * Get vlan interface making sure it is running and on the right wiphy.
2159 */
2160 static int get_vlan(struct genl_info *info,
2161 struct cfg80211_registered_device *rdev,
2162 struct net_device **vlan)
2163 {
2164 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2165 *vlan = NULL;
2166
2167 if (vlanattr) {
2168 *vlan = dev_get_by_index(genl_info_net(info),
2169 nla_get_u32(vlanattr));
2170 if (!*vlan)
2171 return -ENODEV;
2172 if (!(*vlan)->ieee80211_ptr)
2173 return -EINVAL;
2174 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2175 return -EINVAL;
2176 if (!netif_running(*vlan))
2177 return -ENETDOWN;
2178 }
2179 return 0;
2180 }
2181
2182 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2183 {
2184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2185 int err;
2186 struct net_device *dev = info->user_ptr[1];
2187 struct station_parameters params;
2188 u8 *mac_addr = NULL;
2189
2190 memset(&params, 0, sizeof(params));
2191
2192 params.listen_interval = -1;
2193
2194 if (info->attrs[NL80211_ATTR_STA_AID])
2195 return -EINVAL;
2196
2197 if (!info->attrs[NL80211_ATTR_MAC])
2198 return -EINVAL;
2199
2200 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2201
2202 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2203 params.supported_rates =
2204 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2205 params.supported_rates_len =
2206 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2207 }
2208
2209 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2210 params.listen_interval =
2211 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2212
2213 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2214 params.ht_capa =
2215 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2216
2217 if (parse_station_flags(info, &params))
2218 return -EINVAL;
2219
2220 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2221 params.plink_action =
2222 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2223
2224 err = get_vlan(info, rdev, &params.vlan);
2225 if (err)
2226 goto out;
2227
2228 /* validate settings */
2229 err = 0;
2230
2231 switch (dev->ieee80211_ptr->iftype) {
2232 case NL80211_IFTYPE_AP:
2233 case NL80211_IFTYPE_AP_VLAN:
2234 case NL80211_IFTYPE_P2P_GO:
2235 /* disallow mesh-specific things */
2236 if (params.plink_action)
2237 err = -EINVAL;
2238 break;
2239 case NL80211_IFTYPE_P2P_CLIENT:
2240 case NL80211_IFTYPE_STATION:
2241 /* disallow everything but AUTHORIZED flag */
2242 if (params.plink_action)
2243 err = -EINVAL;
2244 if (params.vlan)
2245 err = -EINVAL;
2246 if (params.supported_rates)
2247 err = -EINVAL;
2248 if (params.ht_capa)
2249 err = -EINVAL;
2250 if (params.listen_interval >= 0)
2251 err = -EINVAL;
2252 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2253 err = -EINVAL;
2254 break;
2255 case NL80211_IFTYPE_MESH_POINT:
2256 /* disallow things mesh doesn't support */
2257 if (params.vlan)
2258 err = -EINVAL;
2259 if (params.ht_capa)
2260 err = -EINVAL;
2261 if (params.listen_interval >= 0)
2262 err = -EINVAL;
2263 if (params.supported_rates)
2264 err = -EINVAL;
2265 if (params.sta_flags_mask)
2266 err = -EINVAL;
2267 break;
2268 default:
2269 err = -EINVAL;
2270 }
2271
2272 if (err)
2273 goto out;
2274
2275 if (!rdev->ops->change_station) {
2276 err = -EOPNOTSUPP;
2277 goto out;
2278 }
2279
2280 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2281
2282 out:
2283 if (params.vlan)
2284 dev_put(params.vlan);
2285
2286 return err;
2287 }
2288
2289 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2290 {
2291 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2292 int err;
2293 struct net_device *dev = info->user_ptr[1];
2294 struct station_parameters params;
2295 u8 *mac_addr = NULL;
2296
2297 memset(&params, 0, sizeof(params));
2298
2299 if (!info->attrs[NL80211_ATTR_MAC])
2300 return -EINVAL;
2301
2302 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2303 return -EINVAL;
2304
2305 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2306 return -EINVAL;
2307
2308 if (!info->attrs[NL80211_ATTR_STA_AID])
2309 return -EINVAL;
2310
2311 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2312 params.supported_rates =
2313 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2314 params.supported_rates_len =
2315 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2316 params.listen_interval =
2317 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2318
2319 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2320 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2321 return -EINVAL;
2322
2323 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2324 params.ht_capa =
2325 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2326
2327 if (parse_station_flags(info, &params))
2328 return -EINVAL;
2329
2330 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2331 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2332 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2333 return -EINVAL;
2334
2335 err = get_vlan(info, rdev, &params.vlan);
2336 if (err)
2337 goto out;
2338
2339 /* validate settings */
2340 err = 0;
2341
2342 if (!rdev->ops->add_station) {
2343 err = -EOPNOTSUPP;
2344 goto out;
2345 }
2346
2347 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2348
2349 out:
2350 if (params.vlan)
2351 dev_put(params.vlan);
2352 return err;
2353 }
2354
2355 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2356 {
2357 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2358 struct net_device *dev = info->user_ptr[1];
2359 u8 *mac_addr = NULL;
2360
2361 if (info->attrs[NL80211_ATTR_MAC])
2362 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2363
2364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2365 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2366 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2367 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2368 return -EINVAL;
2369
2370 if (!rdev->ops->del_station)
2371 return -EOPNOTSUPP;
2372
2373 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2374 }
2375
2376 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2377 int flags, struct net_device *dev,
2378 u8 *dst, u8 *next_hop,
2379 struct mpath_info *pinfo)
2380 {
2381 void *hdr;
2382 struct nlattr *pinfoattr;
2383
2384 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2385 if (!hdr)
2386 return -1;
2387
2388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2389 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2390 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2391
2392 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2393
2394 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2395 if (!pinfoattr)
2396 goto nla_put_failure;
2397 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2398 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2399 pinfo->frame_qlen);
2400 if (pinfo->filled & MPATH_INFO_SN)
2401 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2402 pinfo->sn);
2403 if (pinfo->filled & MPATH_INFO_METRIC)
2404 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2405 pinfo->metric);
2406 if (pinfo->filled & MPATH_INFO_EXPTIME)
2407 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2408 pinfo->exptime);
2409 if (pinfo->filled & MPATH_INFO_FLAGS)
2410 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2411 pinfo->flags);
2412 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2413 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2414 pinfo->discovery_timeout);
2415 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2416 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2417 pinfo->discovery_retries);
2418
2419 nla_nest_end(msg, pinfoattr);
2420
2421 return genlmsg_end(msg, hdr);
2422
2423 nla_put_failure:
2424 genlmsg_cancel(msg, hdr);
2425 return -EMSGSIZE;
2426 }
2427
2428 static int nl80211_dump_mpath(struct sk_buff *skb,
2429 struct netlink_callback *cb)
2430 {
2431 struct mpath_info pinfo;
2432 struct cfg80211_registered_device *dev;
2433 struct net_device *netdev;
2434 u8 dst[ETH_ALEN];
2435 u8 next_hop[ETH_ALEN];
2436 int path_idx = cb->args[1];
2437 int err;
2438
2439 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2440 if (err)
2441 return err;
2442
2443 if (!dev->ops->dump_mpath) {
2444 err = -EOPNOTSUPP;
2445 goto out_err;
2446 }
2447
2448 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2449 err = -EOPNOTSUPP;
2450 goto out_err;
2451 }
2452
2453 while (1) {
2454 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2455 dst, next_hop, &pinfo);
2456 if (err == -ENOENT)
2457 break;
2458 if (err)
2459 goto out_err;
2460
2461 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2462 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2463 netdev, dst, next_hop,
2464 &pinfo) < 0)
2465 goto out;
2466
2467 path_idx++;
2468 }
2469
2470
2471 out:
2472 cb->args[1] = path_idx;
2473 err = skb->len;
2474 out_err:
2475 nl80211_finish_netdev_dump(dev);
2476 return err;
2477 }
2478
2479 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2480 {
2481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2482 int err;
2483 struct net_device *dev = info->user_ptr[1];
2484 struct mpath_info pinfo;
2485 struct sk_buff *msg;
2486 u8 *dst = NULL;
2487 u8 next_hop[ETH_ALEN];
2488
2489 memset(&pinfo, 0, sizeof(pinfo));
2490
2491 if (!info->attrs[NL80211_ATTR_MAC])
2492 return -EINVAL;
2493
2494 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2495
2496 if (!rdev->ops->get_mpath)
2497 return -EOPNOTSUPP;
2498
2499 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2500 return -EOPNOTSUPP;
2501
2502 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2503 if (err)
2504 return err;
2505
2506 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2507 if (!msg)
2508 return -ENOMEM;
2509
2510 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2511 dev, dst, next_hop, &pinfo) < 0) {
2512 nlmsg_free(msg);
2513 return -ENOBUFS;
2514 }
2515
2516 return genlmsg_reply(msg, info);
2517 }
2518
2519 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2520 {
2521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2522 struct net_device *dev = info->user_ptr[1];
2523 u8 *dst = NULL;
2524 u8 *next_hop = NULL;
2525
2526 if (!info->attrs[NL80211_ATTR_MAC])
2527 return -EINVAL;
2528
2529 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2530 return -EINVAL;
2531
2532 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2533 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2534
2535 if (!rdev->ops->change_mpath)
2536 return -EOPNOTSUPP;
2537
2538 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2539 return -EOPNOTSUPP;
2540
2541 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2542 }
2543
2544 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2545 {
2546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2547 struct net_device *dev = info->user_ptr[1];
2548 u8 *dst = NULL;
2549 u8 *next_hop = NULL;
2550
2551 if (!info->attrs[NL80211_ATTR_MAC])
2552 return -EINVAL;
2553
2554 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2555 return -EINVAL;
2556
2557 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2558 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2559
2560 if (!rdev->ops->add_mpath)
2561 return -EOPNOTSUPP;
2562
2563 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2564 return -EOPNOTSUPP;
2565
2566 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2567 }
2568
2569 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2570 {
2571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2572 struct net_device *dev = info->user_ptr[1];
2573 u8 *dst = NULL;
2574
2575 if (info->attrs[NL80211_ATTR_MAC])
2576 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2577
2578 if (!rdev->ops->del_mpath)
2579 return -EOPNOTSUPP;
2580
2581 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2582 }
2583
2584 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2585 {
2586 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2587 struct net_device *dev = info->user_ptr[1];
2588 struct bss_parameters params;
2589
2590 memset(&params, 0, sizeof(params));
2591 /* default to not changing parameters */
2592 params.use_cts_prot = -1;
2593 params.use_short_preamble = -1;
2594 params.use_short_slot_time = -1;
2595 params.ap_isolate = -1;
2596 params.ht_opmode = -1;
2597
2598 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2599 params.use_cts_prot =
2600 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2601 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2602 params.use_short_preamble =
2603 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2604 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2605 params.use_short_slot_time =
2606 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2607 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2608 params.basic_rates =
2609 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2610 params.basic_rates_len =
2611 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2612 }
2613 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2614 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2615 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2616 params.ht_opmode =
2617 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2618
2619 if (!rdev->ops->change_bss)
2620 return -EOPNOTSUPP;
2621
2622 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2623 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2624 return -EOPNOTSUPP;
2625
2626 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2627 }
2628
2629 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2630 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2631 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2632 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2633 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2634 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2635 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2636 };
2637
2638 static int parse_reg_rule(struct nlattr *tb[],
2639 struct ieee80211_reg_rule *reg_rule)
2640 {
2641 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2642 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2643
2644 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2645 return -EINVAL;
2646 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2647 return -EINVAL;
2648 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2649 return -EINVAL;
2650 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2651 return -EINVAL;
2652 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2653 return -EINVAL;
2654
2655 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2656
2657 freq_range->start_freq_khz =
2658 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2659 freq_range->end_freq_khz =
2660 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2661 freq_range->max_bandwidth_khz =
2662 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2663
2664 power_rule->max_eirp =
2665 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2666
2667 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2668 power_rule->max_antenna_gain =
2669 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2670
2671 return 0;
2672 }
2673
2674 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2675 {
2676 int r;
2677 char *data = NULL;
2678
2679 /*
2680 * You should only get this when cfg80211 hasn't yet initialized
2681 * completely when built-in to the kernel right between the time
2682 * window between nl80211_init() and regulatory_init(), if that is
2683 * even possible.
2684 */
2685 mutex_lock(&cfg80211_mutex);
2686 if (unlikely(!cfg80211_regdomain)) {
2687 mutex_unlock(&cfg80211_mutex);
2688 return -EINPROGRESS;
2689 }
2690 mutex_unlock(&cfg80211_mutex);
2691
2692 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2693 return -EINVAL;
2694
2695 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2696
2697 r = regulatory_hint_user(data);
2698
2699 return r;
2700 }
2701
2702 static int nl80211_get_mesh_config(struct sk_buff *skb,
2703 struct genl_info *info)
2704 {
2705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2706 struct net_device *dev = info->user_ptr[1];
2707 struct wireless_dev *wdev = dev->ieee80211_ptr;
2708 struct mesh_config cur_params;
2709 int err = 0;
2710 void *hdr;
2711 struct nlattr *pinfoattr;
2712 struct sk_buff *msg;
2713
2714 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2715 return -EOPNOTSUPP;
2716
2717 if (!rdev->ops->get_mesh_config)
2718 return -EOPNOTSUPP;
2719
2720 wdev_lock(wdev);
2721 /* If not connected, get default parameters */
2722 if (!wdev->mesh_id_len)
2723 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2724 else
2725 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2726 &cur_params);
2727 wdev_unlock(wdev);
2728
2729 if (err)
2730 return err;
2731
2732 /* Draw up a netlink message to send back */
2733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2734 if (!msg)
2735 return -ENOMEM;
2736 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2737 NL80211_CMD_GET_MESH_CONFIG);
2738 if (!hdr)
2739 goto out;
2740 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2741 if (!pinfoattr)
2742 goto nla_put_failure;
2743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2744 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2745 cur_params.dot11MeshRetryTimeout);
2746 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2747 cur_params.dot11MeshConfirmTimeout);
2748 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2749 cur_params.dot11MeshHoldingTimeout);
2750 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2751 cur_params.dot11MeshMaxPeerLinks);
2752 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2753 cur_params.dot11MeshMaxRetries);
2754 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2755 cur_params.dot11MeshTTL);
2756 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2757 cur_params.element_ttl);
2758 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2759 cur_params.auto_open_plinks);
2760 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2761 cur_params.dot11MeshHWMPmaxPREQretries);
2762 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2763 cur_params.path_refresh_time);
2764 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2765 cur_params.min_discovery_timeout);
2766 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2767 cur_params.dot11MeshHWMPactivePathTimeout);
2768 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2769 cur_params.dot11MeshHWMPpreqMinInterval);
2770 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2771 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2772 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2773 cur_params.dot11MeshHWMPRootMode);
2774 nla_nest_end(msg, pinfoattr);
2775 genlmsg_end(msg, hdr);
2776 return genlmsg_reply(msg, info);
2777
2778 nla_put_failure:
2779 genlmsg_cancel(msg, hdr);
2780 out:
2781 nlmsg_free(msg);
2782 return -ENOBUFS;
2783 }
2784
2785 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2786 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2787 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2788 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2789 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2790 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2791 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2792 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2793 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2794
2795 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2796 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2797 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2798 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2799 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2800 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2801 };
2802
2803 static const struct nla_policy
2804 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2805 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2806 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2807 [NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE] = { .type = NLA_BINARY,
2808 .len = IEEE80211_MAX_DATA_LEN },
2809 };
2810
2811 static int nl80211_parse_mesh_config(struct genl_info *info,
2812 struct mesh_config *cfg,
2813 u32 *mask_out)
2814 {
2815 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2816 u32 mask = 0;
2817
2818 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2819 do {\
2820 if (table[attr_num]) {\
2821 cfg->param = nla_fn(table[attr_num]); \
2822 mask |= (1 << (attr_num - 1)); \
2823 } \
2824 } while (0);\
2825
2826
2827 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2828 return -EINVAL;
2829 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2830 info->attrs[NL80211_ATTR_MESH_CONFIG],
2831 nl80211_meshconf_params_policy))
2832 return -EINVAL;
2833
2834 /* This makes sure that there aren't more than 32 mesh config
2835 * parameters (otherwise our bitfield scheme would not work.) */
2836 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2837
2838 /* Fill in the params struct */
2839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2840 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2841 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2842 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2844 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2845 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2846 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2848 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2849 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2850 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2851 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
2852 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
2853 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2854 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2856 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2857 nla_get_u8);
2858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2859 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2860 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2861 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2862 nla_get_u16);
2863 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2864 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2865 nla_get_u32);
2866 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2867 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2868 nla_get_u16);
2869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2870 dot11MeshHWMPnetDiameterTraversalTime,
2871 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2872 nla_get_u16);
2873 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2874 dot11MeshHWMPRootMode, mask,
2875 NL80211_MESHCONF_HWMP_ROOTMODE,
2876 nla_get_u8);
2877 if (mask_out)
2878 *mask_out = mask;
2879
2880 return 0;
2881
2882 #undef FILL_IN_MESH_PARAM_IF_SET
2883 }
2884
2885 static int nl80211_parse_mesh_setup(struct genl_info *info,
2886 struct mesh_setup *setup)
2887 {
2888 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
2889
2890 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
2891 return -EINVAL;
2892 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
2893 info->attrs[NL80211_ATTR_MESH_SETUP],
2894 nl80211_mesh_setup_params_policy))
2895 return -EINVAL;
2896
2897 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
2898 setup->path_sel_proto =
2899 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
2900 IEEE80211_PATH_PROTOCOL_VENDOR :
2901 IEEE80211_PATH_PROTOCOL_HWMP;
2902
2903 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
2904 setup->path_metric =
2905 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
2906 IEEE80211_PATH_METRIC_VENDOR :
2907 IEEE80211_PATH_METRIC_AIRTIME;
2908
2909 if (tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE]) {
2910 struct nlattr *ieattr =
2911 tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE];
2912 if (!is_valid_ie_attr(ieattr))
2913 return -EINVAL;
2914 setup->vendor_ie = nla_data(ieattr);
2915 setup->vendor_ie_len = nla_len(ieattr);
2916 }
2917
2918 return 0;
2919 }
2920
2921 static int nl80211_update_mesh_config(struct sk_buff *skb,
2922 struct genl_info *info)
2923 {
2924 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2925 struct net_device *dev = info->user_ptr[1];
2926 struct wireless_dev *wdev = dev->ieee80211_ptr;
2927 struct mesh_config cfg;
2928 u32 mask;
2929 int err;
2930
2931 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2932 return -EOPNOTSUPP;
2933
2934 if (!rdev->ops->update_mesh_config)
2935 return -EOPNOTSUPP;
2936
2937 err = nl80211_parse_mesh_config(info, &cfg, &mask);
2938 if (err)
2939 return err;
2940
2941 wdev_lock(wdev);
2942 if (!wdev->mesh_id_len)
2943 err = -ENOLINK;
2944
2945 if (!err)
2946 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
2947 mask, &cfg);
2948
2949 wdev_unlock(wdev);
2950
2951 return err;
2952 }
2953
2954 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2955 {
2956 struct sk_buff *msg;
2957 void *hdr = NULL;
2958 struct nlattr *nl_reg_rules;
2959 unsigned int i;
2960 int err = -EINVAL;
2961
2962 mutex_lock(&cfg80211_mutex);
2963
2964 if (!cfg80211_regdomain)
2965 goto out;
2966
2967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2968 if (!msg) {
2969 err = -ENOBUFS;
2970 goto out;
2971 }
2972
2973 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2974 NL80211_CMD_GET_REG);
2975 if (!hdr)
2976 goto put_failure;
2977
2978 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2979 cfg80211_regdomain->alpha2);
2980
2981 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2982 if (!nl_reg_rules)
2983 goto nla_put_failure;
2984
2985 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2986 struct nlattr *nl_reg_rule;
2987 const struct ieee80211_reg_rule *reg_rule;
2988 const struct ieee80211_freq_range *freq_range;
2989 const struct ieee80211_power_rule *power_rule;
2990
2991 reg_rule = &cfg80211_regdomain->reg_rules[i];
2992 freq_range = &reg_rule->freq_range;
2993 power_rule = &reg_rule->power_rule;
2994
2995 nl_reg_rule = nla_nest_start(msg, i);
2996 if (!nl_reg_rule)
2997 goto nla_put_failure;
2998
2999 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3000 reg_rule->flags);
3001 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3002 freq_range->start_freq_khz);
3003 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3004 freq_range->end_freq_khz);
3005 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3006 freq_range->max_bandwidth_khz);
3007 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3008 power_rule->max_antenna_gain);
3009 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3010 power_rule->max_eirp);
3011
3012 nla_nest_end(msg, nl_reg_rule);
3013 }
3014
3015 nla_nest_end(msg, nl_reg_rules);
3016
3017 genlmsg_end(msg, hdr);
3018 err = genlmsg_reply(msg, info);
3019 goto out;
3020
3021 nla_put_failure:
3022 genlmsg_cancel(msg, hdr);
3023 put_failure:
3024 nlmsg_free(msg);
3025 err = -EMSGSIZE;
3026 out:
3027 mutex_unlock(&cfg80211_mutex);
3028 return err;
3029 }
3030
3031 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3032 {
3033 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3034 struct nlattr *nl_reg_rule;
3035 char *alpha2 = NULL;
3036 int rem_reg_rules = 0, r = 0;
3037 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3038 struct ieee80211_regdomain *rd = NULL;
3039
3040 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3041 return -EINVAL;
3042
3043 if (!info->attrs[NL80211_ATTR_REG_RULES])
3044 return -EINVAL;
3045
3046 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3047
3048 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3049 rem_reg_rules) {
3050 num_rules++;
3051 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3052 return -EINVAL;
3053 }
3054
3055 mutex_lock(&cfg80211_mutex);
3056
3057 if (!reg_is_valid_request(alpha2)) {
3058 r = -EINVAL;
3059 goto bad_reg;
3060 }
3061
3062 size_of_regd = sizeof(struct ieee80211_regdomain) +
3063 (num_rules * sizeof(struct ieee80211_reg_rule));
3064
3065 rd = kzalloc(size_of_regd, GFP_KERNEL);
3066 if (!rd) {
3067 r = -ENOMEM;
3068 goto bad_reg;
3069 }
3070
3071 rd->n_reg_rules = num_rules;
3072 rd->alpha2[0] = alpha2[0];
3073 rd->alpha2[1] = alpha2[1];
3074
3075 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3076 rem_reg_rules) {
3077 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3078 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3079 reg_rule_policy);
3080 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3081 if (r)
3082 goto bad_reg;
3083
3084 rule_idx++;
3085
3086 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3087 r = -EINVAL;
3088 goto bad_reg;
3089 }
3090 }
3091
3092 BUG_ON(rule_idx != num_rules);
3093
3094 r = set_regdom(rd);
3095
3096 mutex_unlock(&cfg80211_mutex);
3097
3098 return r;
3099
3100 bad_reg:
3101 mutex_unlock(&cfg80211_mutex);
3102 kfree(rd);
3103 return r;
3104 }
3105
3106 static int validate_scan_freqs(struct nlattr *freqs)
3107 {
3108 struct nlattr *attr1, *attr2;
3109 int n_channels = 0, tmp1, tmp2;
3110
3111 nla_for_each_nested(attr1, freqs, tmp1) {
3112 n_channels++;
3113 /*
3114 * Some hardware has a limited channel list for
3115 * scanning, and it is pretty much nonsensical
3116 * to scan for a channel twice, so disallow that
3117 * and don't require drivers to check that the
3118 * channel list they get isn't longer than what
3119 * they can scan, as long as they can scan all
3120 * the channels they registered at once.
3121 */
3122 nla_for_each_nested(attr2, freqs, tmp2)
3123 if (attr1 != attr2 &&
3124 nla_get_u32(attr1) == nla_get_u32(attr2))
3125 return 0;
3126 }
3127
3128 return n_channels;
3129 }
3130
3131 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3132 {
3133 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3134 struct net_device *dev = info->user_ptr[1];
3135 struct cfg80211_scan_request *request;
3136 struct cfg80211_ssid *ssid;
3137 struct ieee80211_channel *channel;
3138 struct nlattr *attr;
3139 struct wiphy *wiphy;
3140 int err, tmp, n_ssids = 0, n_channels, i;
3141 enum ieee80211_band band;
3142 size_t ie_len;
3143
3144 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3145 return -EINVAL;
3146
3147 wiphy = &rdev->wiphy;
3148
3149 if (!rdev->ops->scan)
3150 return -EOPNOTSUPP;
3151
3152 if (rdev->scan_req)
3153 return -EBUSY;
3154
3155 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3156 n_channels = validate_scan_freqs(
3157 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3158 if (!n_channels)
3159 return -EINVAL;
3160 } else {
3161 n_channels = 0;
3162
3163 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3164 if (wiphy->bands[band])
3165 n_channels += wiphy->bands[band]->n_channels;
3166 }
3167
3168 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3169 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3170 n_ssids++;
3171
3172 if (n_ssids > wiphy->max_scan_ssids)
3173 return -EINVAL;
3174
3175 if (info->attrs[NL80211_ATTR_IE])
3176 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3177 else
3178 ie_len = 0;
3179
3180 if (ie_len > wiphy->max_scan_ie_len)
3181 return -EINVAL;
3182
3183 request = kzalloc(sizeof(*request)
3184 + sizeof(*ssid) * n_ssids
3185 + sizeof(channel) * n_channels
3186 + ie_len, GFP_KERNEL);
3187 if (!request)
3188 return -ENOMEM;
3189
3190 if (n_ssids)
3191 request->ssids = (void *)&request->channels[n_channels];
3192 request->n_ssids = n_ssids;
3193 if (ie_len) {
3194 if (request->ssids)
3195 request->ie = (void *)(request->ssids + n_ssids);
3196 else
3197 request->ie = (void *)(request->channels + n_channels);
3198 }
3199
3200 i = 0;
3201 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3202 /* user specified, bail out if channel not found */
3203 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3204 struct ieee80211_channel *chan;
3205
3206 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3207
3208 if (!chan) {
3209 err = -EINVAL;
3210 goto out_free;
3211 }
3212
3213 /* ignore disabled channels */
3214 if (chan->flags & IEEE80211_CHAN_DISABLED)
3215 continue;
3216
3217 request->channels[i] = chan;
3218 i++;
3219 }
3220 } else {
3221 /* all channels */
3222 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3223 int j;
3224 if (!wiphy->bands[band])
3225 continue;
3226 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3227 struct ieee80211_channel *chan;
3228
3229 chan = &wiphy->bands[band]->channels[j];
3230
3231 if (chan->flags & IEEE80211_CHAN_DISABLED)
3232 continue;
3233
3234 request->channels[i] = chan;
3235 i++;
3236 }
3237 }
3238 }
3239
3240 if (!i) {
3241 err = -EINVAL;
3242 goto out_free;
3243 }
3244
3245 request->n_channels = i;
3246
3247 i = 0;
3248 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3249 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3250 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3251 err = -EINVAL;
3252 goto out_free;
3253 }
3254 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3255 request->ssids[i].ssid_len = nla_len(attr);
3256 i++;
3257 }
3258 }
3259
3260 if (info->attrs[NL80211_ATTR_IE]) {
3261 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3262 memcpy((void *)request->ie,
3263 nla_data(info->attrs[NL80211_ATTR_IE]),
3264 request->ie_len);
3265 }
3266
3267 request->dev = dev;
3268 request->wiphy = &rdev->wiphy;
3269
3270 rdev->scan_req = request;
3271 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3272
3273 if (!err) {
3274 nl80211_send_scan_start(rdev, dev);
3275 dev_hold(dev);
3276 } else {
3277 out_free:
3278 rdev->scan_req = NULL;
3279 kfree(request);
3280 }
3281
3282 return err;
3283 }
3284
3285 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3286 struct cfg80211_registered_device *rdev,
3287 struct wireless_dev *wdev,
3288 struct cfg80211_internal_bss *intbss)
3289 {
3290 struct cfg80211_bss *res = &intbss->pub;
3291 void *hdr;
3292 struct nlattr *bss;
3293 int i;
3294
3295 ASSERT_WDEV_LOCK(wdev);
3296
3297 hdr = nl80211hdr_put(msg, pid, seq, flags,
3298 NL80211_CMD_NEW_SCAN_RESULTS);
3299 if (!hdr)
3300 return -1;
3301
3302 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3303 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3304
3305 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3306 if (!bss)
3307 goto nla_put_failure;
3308 if (!is_zero_ether_addr(res->bssid))
3309 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3310 if (res->information_elements && res->len_information_elements)
3311 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3312 res->len_information_elements,
3313 res->information_elements);
3314 if (res->beacon_ies && res->len_beacon_ies &&
3315 res->beacon_ies != res->information_elements)
3316 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3317 res->len_beacon_ies, res->beacon_ies);
3318 if (res->tsf)
3319 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3320 if (res->beacon_interval)
3321 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3322 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3323 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3324 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3325 jiffies_to_msecs(jiffies - intbss->ts));
3326
3327 switch (rdev->wiphy.signal_type) {
3328 case CFG80211_SIGNAL_TYPE_MBM:
3329 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3330 break;
3331 case CFG80211_SIGNAL_TYPE_UNSPEC:
3332 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3333 break;
3334 default:
3335 break;
3336 }
3337
3338 switch (wdev->iftype) {
3339 case NL80211_IFTYPE_P2P_CLIENT:
3340 case NL80211_IFTYPE_STATION:
3341 if (intbss == wdev->current_bss)
3342 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3343 NL80211_BSS_STATUS_ASSOCIATED);
3344 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3345 if (intbss != wdev->auth_bsses[i])
3346 continue;
3347 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3348 NL80211_BSS_STATUS_AUTHENTICATED);
3349 break;
3350 }
3351 break;
3352 case NL80211_IFTYPE_ADHOC:
3353 if (intbss == wdev->current_bss)
3354 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3355 NL80211_BSS_STATUS_IBSS_JOINED);
3356 break;
3357 default:
3358 break;
3359 }
3360
3361 nla_nest_end(msg, bss);
3362
3363 return genlmsg_end(msg, hdr);
3364
3365 nla_put_failure:
3366 genlmsg_cancel(msg, hdr);
3367 return -EMSGSIZE;
3368 }
3369
3370 static int nl80211_dump_scan(struct sk_buff *skb,
3371 struct netlink_callback *cb)
3372 {
3373 struct cfg80211_registered_device *rdev;
3374 struct net_device *dev;
3375 struct cfg80211_internal_bss *scan;
3376 struct wireless_dev *wdev;
3377 int start = cb->args[1], idx = 0;
3378 int err;
3379
3380 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3381 if (err)
3382 return err;
3383
3384 wdev = dev->ieee80211_ptr;
3385
3386 wdev_lock(wdev);
3387 spin_lock_bh(&rdev->bss_lock);
3388 cfg80211_bss_expire(rdev);
3389
3390 list_for_each_entry(scan, &rdev->bss_list, list) {
3391 if (++idx <= start)
3392 continue;
3393 if (nl80211_send_bss(skb,
3394 NETLINK_CB(cb->skb).pid,
3395 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3396 rdev, wdev, scan) < 0) {
3397 idx--;
3398 break;
3399 }
3400 }
3401
3402 spin_unlock_bh(&rdev->bss_lock);
3403 wdev_unlock(wdev);
3404
3405 cb->args[1] = idx;
3406 nl80211_finish_netdev_dump(rdev);
3407
3408 return skb->len;
3409 }
3410
3411 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3412 int flags, struct net_device *dev,
3413 struct survey_info *survey)
3414 {
3415 void *hdr;
3416 struct nlattr *infoattr;
3417
3418 /* Survey without a channel doesn't make sense */
3419 if (!survey->channel)
3420 return -EINVAL;
3421
3422 hdr = nl80211hdr_put(msg, pid, seq, flags,
3423 NL80211_CMD_NEW_SURVEY_RESULTS);
3424 if (!hdr)
3425 return -ENOMEM;
3426
3427 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3428
3429 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3430 if (!infoattr)
3431 goto nla_put_failure;
3432
3433 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3434 survey->channel->center_freq);
3435 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3436 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3437 survey->noise);
3438 if (survey->filled & SURVEY_INFO_IN_USE)
3439 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3440 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3441 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3442 survey->channel_time);
3443 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3444 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3445 survey->channel_time_busy);
3446 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3447 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3448 survey->channel_time_ext_busy);
3449 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3450 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3451 survey->channel_time_rx);
3452 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3453 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3454 survey->channel_time_tx);
3455
3456 nla_nest_end(msg, infoattr);
3457
3458 return genlmsg_end(msg, hdr);
3459
3460 nla_put_failure:
3461 genlmsg_cancel(msg, hdr);
3462 return -EMSGSIZE;
3463 }
3464
3465 static int nl80211_dump_survey(struct sk_buff *skb,
3466 struct netlink_callback *cb)
3467 {
3468 struct survey_info survey;
3469 struct cfg80211_registered_device *dev;
3470 struct net_device *netdev;
3471 int survey_idx = cb->args[1];
3472 int res;
3473
3474 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3475 if (res)
3476 return res;
3477
3478 if (!dev->ops->dump_survey) {
3479 res = -EOPNOTSUPP;
3480 goto out_err;
3481 }
3482
3483 while (1) {
3484 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3485 &survey);
3486 if (res == -ENOENT)
3487 break;
3488 if (res)
3489 goto out_err;
3490
3491 if (nl80211_send_survey(skb,
3492 NETLINK_CB(cb->skb).pid,
3493 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3494 netdev,
3495 &survey) < 0)
3496 goto out;
3497 survey_idx++;
3498 }
3499
3500 out:
3501 cb->args[1] = survey_idx;
3502 res = skb->len;
3503 out_err:
3504 nl80211_finish_netdev_dump(dev);
3505 return res;
3506 }
3507
3508 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3509 {
3510 return auth_type <= NL80211_AUTHTYPE_MAX;
3511 }
3512
3513 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3514 {
3515 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3516 NL80211_WPA_VERSION_2));
3517 }
3518
3519 static bool nl80211_valid_akm_suite(u32 akm)
3520 {
3521 return akm == WLAN_AKM_SUITE_8021X ||
3522 akm == WLAN_AKM_SUITE_PSK;
3523 }
3524
3525 static bool nl80211_valid_cipher_suite(u32 cipher)
3526 {
3527 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3528 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3529 cipher == WLAN_CIPHER_SUITE_TKIP ||
3530 cipher == WLAN_CIPHER_SUITE_CCMP ||
3531 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3532 }
3533
3534
3535 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3536 {
3537 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3538 struct net_device *dev = info->user_ptr[1];
3539 struct ieee80211_channel *chan;
3540 const u8 *bssid, *ssid, *ie = NULL;
3541 int err, ssid_len, ie_len = 0;
3542 enum nl80211_auth_type auth_type;
3543 struct key_parse key;
3544 bool local_state_change;
3545
3546 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3547 return -EINVAL;
3548
3549 if (!info->attrs[NL80211_ATTR_MAC])
3550 return -EINVAL;
3551
3552 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3553 return -EINVAL;
3554
3555 if (!info->attrs[NL80211_ATTR_SSID])
3556 return -EINVAL;
3557
3558 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3559 return -EINVAL;
3560
3561 err = nl80211_parse_key(info, &key);
3562 if (err)
3563 return err;
3564
3565 if (key.idx >= 0) {
3566 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3567 return -EINVAL;
3568 if (!key.p.key || !key.p.key_len)
3569 return -EINVAL;
3570 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3571 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3572 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3573 key.p.key_len != WLAN_KEY_LEN_WEP104))
3574 return -EINVAL;
3575 if (key.idx > 4)
3576 return -EINVAL;
3577 } else {
3578 key.p.key_len = 0;
3579 key.p.key = NULL;
3580 }
3581
3582 if (key.idx >= 0) {
3583 int i;
3584 bool ok = false;
3585 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3586 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3587 ok = true;
3588 break;
3589 }
3590 }
3591 if (!ok)
3592 return -EINVAL;
3593 }
3594
3595 if (!rdev->ops->auth)
3596 return -EOPNOTSUPP;
3597
3598 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3599 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3600 return -EOPNOTSUPP;
3601
3602 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3603 chan = ieee80211_get_channel(&rdev->wiphy,
3604 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3605 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3606 return -EINVAL;
3607
3608 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3609 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3610
3611 if (info->attrs[NL80211_ATTR_IE]) {
3612 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3613 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3614 }
3615
3616 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3617 if (!nl80211_valid_auth_type(auth_type))
3618 return -EINVAL;
3619
3620 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3621
3622 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3623 ssid, ssid_len, ie, ie_len,
3624 key.p.key, key.p.key_len, key.idx,
3625 local_state_change);
3626 }
3627
3628 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3629 struct genl_info *info,
3630 struct cfg80211_crypto_settings *settings,
3631 int cipher_limit)
3632 {
3633 memset(settings, 0, sizeof(*settings));
3634
3635 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3636
3637 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3638 u16 proto;
3639 proto = nla_get_u16(
3640 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3641 settings->control_port_ethertype = cpu_to_be16(proto);
3642 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3643 proto != ETH_P_PAE)
3644 return -EINVAL;
3645 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3646 settings->control_port_no_encrypt = true;
3647 } else
3648 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3649
3650 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3651 void *data;
3652 int len, i;
3653
3654 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3655 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3656 settings->n_ciphers_pairwise = len / sizeof(u32);
3657
3658 if (len % sizeof(u32))
3659 return -EINVAL;
3660
3661 if (settings->n_ciphers_pairwise > cipher_limit)
3662 return -EINVAL;
3663
3664 memcpy(settings->ciphers_pairwise, data, len);
3665
3666 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3667 if (!nl80211_valid_cipher_suite(
3668 settings->ciphers_pairwise[i]))
3669 return -EINVAL;
3670 }
3671
3672 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3673 settings->cipher_group =
3674 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3675 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3676 return -EINVAL;
3677 }
3678
3679 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3680 settings->wpa_versions =
3681 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3682 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3683 return -EINVAL;
3684 }
3685
3686 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3687 void *data;
3688 int len, i;
3689
3690 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3691 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3692 settings->n_akm_suites = len / sizeof(u32);
3693
3694 if (len % sizeof(u32))
3695 return -EINVAL;
3696
3697 memcpy(settings->akm_suites, data, len);
3698
3699 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3700 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3701 return -EINVAL;
3702 }
3703
3704 return 0;
3705 }
3706
3707 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3708 {
3709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3710 struct net_device *dev = info->user_ptr[1];
3711 struct cfg80211_crypto_settings crypto;
3712 struct ieee80211_channel *chan;
3713 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3714 int err, ssid_len, ie_len = 0;
3715 bool use_mfp = false;
3716
3717 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3718 return -EINVAL;
3719
3720 if (!info->attrs[NL80211_ATTR_MAC] ||
3721 !info->attrs[NL80211_ATTR_SSID] ||
3722 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3723 return -EINVAL;
3724
3725 if (!rdev->ops->assoc)
3726 return -EOPNOTSUPP;
3727
3728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3729 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3730 return -EOPNOTSUPP;
3731
3732 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3733
3734 chan = ieee80211_get_channel(&rdev->wiphy,
3735 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3736 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3737 return -EINVAL;
3738
3739 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3740 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3741
3742 if (info->attrs[NL80211_ATTR_IE]) {
3743 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3744 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3745 }
3746
3747 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3748 enum nl80211_mfp mfp =
3749 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3750 if (mfp == NL80211_MFP_REQUIRED)
3751 use_mfp = true;
3752 else if (mfp != NL80211_MFP_NO)
3753 return -EINVAL;
3754 }
3755
3756 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3757 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3758
3759 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
3760 if (!err)
3761 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3762 ssid, ssid_len, ie, ie_len, use_mfp,
3763 &crypto);
3764
3765 return err;
3766 }
3767
3768 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3769 {
3770 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3771 struct net_device *dev = info->user_ptr[1];
3772 const u8 *ie = NULL, *bssid;
3773 int ie_len = 0;
3774 u16 reason_code;
3775 bool local_state_change;
3776
3777 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3778 return -EINVAL;
3779
3780 if (!info->attrs[NL80211_ATTR_MAC])
3781 return -EINVAL;
3782
3783 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3784 return -EINVAL;
3785
3786 if (!rdev->ops->deauth)
3787 return -EOPNOTSUPP;
3788
3789 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3790 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3791 return -EOPNOTSUPP;
3792
3793 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3794
3795 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3796 if (reason_code == 0) {
3797 /* Reason Code 0 is reserved */
3798 return -EINVAL;
3799 }
3800
3801 if (info->attrs[NL80211_ATTR_IE]) {
3802 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3803 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3804 }
3805
3806 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3807
3808 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3809 local_state_change);
3810 }
3811
3812 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3813 {
3814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3815 struct net_device *dev = info->user_ptr[1];
3816 const u8 *ie = NULL, *bssid;
3817 int ie_len = 0;
3818 u16 reason_code;
3819 bool local_state_change;
3820
3821 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3822 return -EINVAL;
3823
3824 if (!info->attrs[NL80211_ATTR_MAC])
3825 return -EINVAL;
3826
3827 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3828 return -EINVAL;
3829
3830 if (!rdev->ops->disassoc)
3831 return -EOPNOTSUPP;
3832
3833 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3834 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3835 return -EOPNOTSUPP;
3836
3837 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3838
3839 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3840 if (reason_code == 0) {
3841 /* Reason Code 0 is reserved */
3842 return -EINVAL;
3843 }
3844
3845 if (info->attrs[NL80211_ATTR_IE]) {
3846 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3847 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3848 }
3849
3850 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3851
3852 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3853 local_state_change);
3854 }
3855
3856 static bool
3857 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
3858 int mcast_rate[IEEE80211_NUM_BANDS],
3859 int rateval)
3860 {
3861 struct wiphy *wiphy = &rdev->wiphy;
3862 bool found = false;
3863 int band, i;
3864
3865 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3866 struct ieee80211_supported_band *sband;
3867
3868 sband = wiphy->bands[band];
3869 if (!sband)
3870 continue;
3871
3872 for (i = 0; i < sband->n_bitrates; i++) {
3873 if (sband->bitrates[i].bitrate == rateval) {
3874 mcast_rate[band] = i + 1;
3875 found = true;
3876 break;
3877 }
3878 }
3879 }
3880
3881 return found;
3882 }
3883
3884 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3885 {
3886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3887 struct net_device *dev = info->user_ptr[1];
3888 struct cfg80211_ibss_params ibss;
3889 struct wiphy *wiphy;
3890 struct cfg80211_cached_keys *connkeys = NULL;
3891 int err;
3892
3893 memset(&ibss, 0, sizeof(ibss));
3894
3895 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3896 return -EINVAL;
3897
3898 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3899 !info->attrs[NL80211_ATTR_SSID] ||
3900 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3901 return -EINVAL;
3902
3903 ibss.beacon_interval = 100;
3904
3905 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3906 ibss.beacon_interval =
3907 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3908 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3909 return -EINVAL;
3910 }
3911
3912 if (!rdev->ops->join_ibss)
3913 return -EOPNOTSUPP;
3914
3915 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3916 return -EOPNOTSUPP;
3917
3918 wiphy = &rdev->wiphy;
3919
3920 if (info->attrs[NL80211_ATTR_MAC])
3921 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3922 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3923 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3924
3925 if (info->attrs[NL80211_ATTR_IE]) {
3926 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3927 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3928 }
3929
3930 ibss.channel = ieee80211_get_channel(wiphy,
3931 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3932 if (!ibss.channel ||
3933 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3934 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3935 return -EINVAL;
3936
3937 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3938 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3939
3940 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3941 u8 *rates =
3942 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3943 int n_rates =
3944 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3945 struct ieee80211_supported_band *sband =
3946 wiphy->bands[ibss.channel->band];
3947 int i, j;
3948
3949 if (n_rates == 0)
3950 return -EINVAL;
3951
3952 for (i = 0; i < n_rates; i++) {
3953 int rate = (rates[i] & 0x7f) * 5;
3954 bool found = false;
3955
3956 for (j = 0; j < sband->n_bitrates; j++) {
3957 if (sband->bitrates[j].bitrate == rate) {
3958 found = true;
3959 ibss.basic_rates |= BIT(j);
3960 break;
3961 }
3962 }
3963 if (!found)
3964 return -EINVAL;
3965 }
3966 }
3967
3968 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
3969 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
3970 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
3971 return -EINVAL;
3972
3973 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3974 connkeys = nl80211_parse_connkeys(rdev,
3975 info->attrs[NL80211_ATTR_KEYS]);
3976 if (IS_ERR(connkeys))
3977 return PTR_ERR(connkeys);
3978 }
3979
3980 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3981 if (err)
3982 kfree(connkeys);
3983 return err;
3984 }
3985
3986 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3987 {
3988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3989 struct net_device *dev = info->user_ptr[1];
3990
3991 if (!rdev->ops->leave_ibss)
3992 return -EOPNOTSUPP;
3993
3994 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3995 return -EOPNOTSUPP;
3996
3997 return cfg80211_leave_ibss(rdev, dev, false);
3998 }
3999
4000 #ifdef CONFIG_NL80211_TESTMODE
4001 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4002 .name = "testmode",
4003 };
4004
4005 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4006 {
4007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4008 int err;
4009
4010 if (!info->attrs[NL80211_ATTR_TESTDATA])
4011 return -EINVAL;
4012
4013 err = -EOPNOTSUPP;
4014 if (rdev->ops->testmode_cmd) {
4015 rdev->testmode_info = info;
4016 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4017 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4018 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4019 rdev->testmode_info = NULL;
4020 }
4021
4022 return err;
4023 }
4024
4025 static struct sk_buff *
4026 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4027 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4028 {
4029 struct sk_buff *skb;
4030 void *hdr;
4031 struct nlattr *data;
4032
4033 skb = nlmsg_new(approxlen + 100, gfp);
4034 if (!skb)
4035 return NULL;
4036
4037 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4038 if (!hdr) {
4039 kfree_skb(skb);
4040 return NULL;
4041 }
4042
4043 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4044 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4045
4046 ((void **)skb->cb)[0] = rdev;
4047 ((void **)skb->cb)[1] = hdr;
4048 ((void **)skb->cb)[2] = data;
4049
4050 return skb;
4051
4052 nla_put_failure:
4053 kfree_skb(skb);
4054 return NULL;
4055 }
4056
4057 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4058 int approxlen)
4059 {
4060 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4061
4062 if (WARN_ON(!rdev->testmode_info))
4063 return NULL;
4064
4065 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4066 rdev->testmode_info->snd_pid,
4067 rdev->testmode_info->snd_seq,
4068 GFP_KERNEL);
4069 }
4070 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4071
4072 int cfg80211_testmode_reply(struct sk_buff *skb)
4073 {
4074 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4075 void *hdr = ((void **)skb->cb)[1];
4076 struct nlattr *data = ((void **)skb->cb)[2];
4077
4078 if (WARN_ON(!rdev->testmode_info)) {
4079 kfree_skb(skb);
4080 return -EINVAL;
4081 }
4082
4083 nla_nest_end(skb, data);
4084 genlmsg_end(skb, hdr);
4085 return genlmsg_reply(skb, rdev->testmode_info);
4086 }
4087 EXPORT_SYMBOL(cfg80211_testmode_reply);
4088
4089 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4090 int approxlen, gfp_t gfp)
4091 {
4092 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4093
4094 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4095 }
4096 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4097
4098 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4099 {
4100 void *hdr = ((void **)skb->cb)[1];
4101 struct nlattr *data = ((void **)skb->cb)[2];
4102
4103 nla_nest_end(skb, data);
4104 genlmsg_end(skb, hdr);
4105 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4106 }
4107 EXPORT_SYMBOL(cfg80211_testmode_event);
4108 #endif
4109
4110 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4111 {
4112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4113 struct net_device *dev = info->user_ptr[1];
4114 struct cfg80211_connect_params connect;
4115 struct wiphy *wiphy;
4116 struct cfg80211_cached_keys *connkeys = NULL;
4117 int err;
4118
4119 memset(&connect, 0, sizeof(connect));
4120
4121 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4122 return -EINVAL;
4123
4124 if (!info->attrs[NL80211_ATTR_SSID] ||
4125 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4126 return -EINVAL;
4127
4128 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4129 connect.auth_type =
4130 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4131 if (!nl80211_valid_auth_type(connect.auth_type))
4132 return -EINVAL;
4133 } else
4134 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4135
4136 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4137
4138 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4139 NL80211_MAX_NR_CIPHER_SUITES);
4140 if (err)
4141 return err;
4142
4143 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4144 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4145 return -EOPNOTSUPP;
4146
4147 wiphy = &rdev->wiphy;
4148
4149 if (info->attrs[NL80211_ATTR_MAC])
4150 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4151 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4152 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4153
4154 if (info->attrs[NL80211_ATTR_IE]) {
4155 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4156 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4157 }
4158
4159 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4160 connect.channel =
4161 ieee80211_get_channel(wiphy,
4162 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4163 if (!connect.channel ||
4164 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4165 return -EINVAL;
4166 }
4167
4168 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4169 connkeys = nl80211_parse_connkeys(rdev,
4170 info->attrs[NL80211_ATTR_KEYS]);
4171 if (IS_ERR(connkeys))
4172 return PTR_ERR(connkeys);
4173 }
4174
4175 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4176 if (err)
4177 kfree(connkeys);
4178 return err;
4179 }
4180
4181 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4182 {
4183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4184 struct net_device *dev = info->user_ptr[1];
4185 u16 reason;
4186
4187 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4188 reason = WLAN_REASON_DEAUTH_LEAVING;
4189 else
4190 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4191
4192 if (reason == 0)
4193 return -EINVAL;
4194
4195 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4197 return -EOPNOTSUPP;
4198
4199 return cfg80211_disconnect(rdev, dev, reason, true);
4200 }
4201
4202 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4203 {
4204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4205 struct net *net;
4206 int err;
4207 u32 pid;
4208
4209 if (!info->attrs[NL80211_ATTR_PID])
4210 return -EINVAL;
4211
4212 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4213
4214 net = get_net_ns_by_pid(pid);
4215 if (IS_ERR(net))
4216 return PTR_ERR(net);
4217
4218 err = 0;
4219
4220 /* check if anything to do */
4221 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4222 err = cfg80211_switch_netns(rdev, net);
4223
4224 put_net(net);
4225 return err;
4226 }
4227
4228 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4229 {
4230 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4231 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4232 struct cfg80211_pmksa *pmksa) = NULL;
4233 struct net_device *dev = info->user_ptr[1];
4234 struct cfg80211_pmksa pmksa;
4235
4236 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4237
4238 if (!info->attrs[NL80211_ATTR_MAC])
4239 return -EINVAL;
4240
4241 if (!info->attrs[NL80211_ATTR_PMKID])
4242 return -EINVAL;
4243
4244 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4245 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4246
4247 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4248 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4249 return -EOPNOTSUPP;
4250
4251 switch (info->genlhdr->cmd) {
4252 case NL80211_CMD_SET_PMKSA:
4253 rdev_ops = rdev->ops->set_pmksa;
4254 break;
4255 case NL80211_CMD_DEL_PMKSA:
4256 rdev_ops = rdev->ops->del_pmksa;
4257 break;
4258 default:
4259 WARN_ON(1);
4260 break;
4261 }
4262
4263 if (!rdev_ops)
4264 return -EOPNOTSUPP;
4265
4266 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4267 }
4268
4269 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4270 {
4271 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4272 struct net_device *dev = info->user_ptr[1];
4273
4274 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4276 return -EOPNOTSUPP;
4277
4278 if (!rdev->ops->flush_pmksa)
4279 return -EOPNOTSUPP;
4280
4281 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4282 }
4283
4284 static int nl80211_remain_on_channel(struct sk_buff *skb,
4285 struct genl_info *info)
4286 {
4287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4288 struct net_device *dev = info->user_ptr[1];
4289 struct ieee80211_channel *chan;
4290 struct sk_buff *msg;
4291 void *hdr;
4292 u64 cookie;
4293 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4294 u32 freq, duration;
4295 int err;
4296
4297 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4298 !info->attrs[NL80211_ATTR_DURATION])
4299 return -EINVAL;
4300
4301 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4302
4303 /*
4304 * We should be on that channel for at least one jiffie,
4305 * and more than 5 seconds seems excessive.
4306 */
4307 if (!duration || !msecs_to_jiffies(duration) ||
4308 duration > rdev->wiphy.max_remain_on_channel_duration)
4309 return -EINVAL;
4310
4311 if (!rdev->ops->remain_on_channel)
4312 return -EOPNOTSUPP;
4313
4314 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4315 channel_type = nla_get_u32(
4316 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4317 if (channel_type != NL80211_CHAN_NO_HT &&
4318 channel_type != NL80211_CHAN_HT20 &&
4319 channel_type != NL80211_CHAN_HT40PLUS &&
4320 channel_type != NL80211_CHAN_HT40MINUS)
4321 return -EINVAL;
4322 }
4323
4324 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4325 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4326 if (chan == NULL)
4327 return -EINVAL;
4328
4329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4330 if (!msg)
4331 return -ENOMEM;
4332
4333 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4334 NL80211_CMD_REMAIN_ON_CHANNEL);
4335
4336 if (IS_ERR(hdr)) {
4337 err = PTR_ERR(hdr);
4338 goto free_msg;
4339 }
4340
4341 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4342 channel_type, duration, &cookie);
4343
4344 if (err)
4345 goto free_msg;
4346
4347 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4348
4349 genlmsg_end(msg, hdr);
4350
4351 return genlmsg_reply(msg, info);
4352
4353 nla_put_failure:
4354 err = -ENOBUFS;
4355 free_msg:
4356 nlmsg_free(msg);
4357 return err;
4358 }
4359
4360 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4361 struct genl_info *info)
4362 {
4363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4364 struct net_device *dev = info->user_ptr[1];
4365 u64 cookie;
4366
4367 if (!info->attrs[NL80211_ATTR_COOKIE])
4368 return -EINVAL;
4369
4370 if (!rdev->ops->cancel_remain_on_channel)
4371 return -EOPNOTSUPP;
4372
4373 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4374
4375 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4376 }
4377
4378 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4379 u8 *rates, u8 rates_len)
4380 {
4381 u8 i;
4382 u32 mask = 0;
4383
4384 for (i = 0; i < rates_len; i++) {
4385 int rate = (rates[i] & 0x7f) * 5;
4386 int ridx;
4387 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4388 struct ieee80211_rate *srate =
4389 &sband->bitrates[ridx];
4390 if (rate == srate->bitrate) {
4391 mask |= 1 << ridx;
4392 break;
4393 }
4394 }
4395 if (ridx == sband->n_bitrates)
4396 return 0; /* rate not found */
4397 }
4398
4399 return mask;
4400 }
4401
4402 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4403 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4404 .len = NL80211_MAX_SUPP_RATES },
4405 };
4406
4407 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4408 struct genl_info *info)
4409 {
4410 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4412 struct cfg80211_bitrate_mask mask;
4413 int rem, i;
4414 struct net_device *dev = info->user_ptr[1];
4415 struct nlattr *tx_rates;
4416 struct ieee80211_supported_band *sband;
4417
4418 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4419 return -EINVAL;
4420
4421 if (!rdev->ops->set_bitrate_mask)
4422 return -EOPNOTSUPP;
4423
4424 memset(&mask, 0, sizeof(mask));
4425 /* Default to all rates enabled */
4426 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4427 sband = rdev->wiphy.bands[i];
4428 mask.control[i].legacy =
4429 sband ? (1 << sband->n_bitrates) - 1 : 0;
4430 }
4431
4432 /*
4433 * The nested attribute uses enum nl80211_band as the index. This maps
4434 * directly to the enum ieee80211_band values used in cfg80211.
4435 */
4436 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4437 {
4438 enum ieee80211_band band = nla_type(tx_rates);
4439 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4440 return -EINVAL;
4441 sband = rdev->wiphy.bands[band];
4442 if (sband == NULL)
4443 return -EINVAL;
4444 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4445 nla_len(tx_rates), nl80211_txattr_policy);
4446 if (tb[NL80211_TXRATE_LEGACY]) {
4447 mask.control[band].legacy = rateset_to_mask(
4448 sband,
4449 nla_data(tb[NL80211_TXRATE_LEGACY]),
4450 nla_len(tb[NL80211_TXRATE_LEGACY]));
4451 if (mask.control[band].legacy == 0)
4452 return -EINVAL;
4453 }
4454 }
4455
4456 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4457 }
4458
4459 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4460 {
4461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4462 struct net_device *dev = info->user_ptr[1];
4463 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4464
4465 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4466 return -EINVAL;
4467
4468 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4469 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4470
4471 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4472 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4473 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4474 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4475 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4476 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4477 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4478 return -EOPNOTSUPP;
4479
4480 /* not much point in registering if we can't reply */
4481 if (!rdev->ops->mgmt_tx)
4482 return -EOPNOTSUPP;
4483
4484 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4485 frame_type,
4486 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4487 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4488 }
4489
4490 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4491 {
4492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4493 struct net_device *dev = info->user_ptr[1];
4494 struct ieee80211_channel *chan;
4495 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4496 bool channel_type_valid = false;
4497 u32 freq;
4498 int err;
4499 void *hdr;
4500 u64 cookie;
4501 struct sk_buff *msg;
4502 unsigned int wait = 0;
4503 bool offchan;
4504
4505 if (!info->attrs[NL80211_ATTR_FRAME] ||
4506 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4507 return -EINVAL;
4508
4509 if (!rdev->ops->mgmt_tx)
4510 return -EOPNOTSUPP;
4511
4512 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4513 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4514 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4515 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4516 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4517 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4518 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4519 return -EOPNOTSUPP;
4520
4521 if (info->attrs[NL80211_ATTR_DURATION]) {
4522 if (!rdev->ops->mgmt_tx_cancel_wait)
4523 return -EINVAL;
4524 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4525 }
4526
4527 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4528 channel_type = nla_get_u32(
4529 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4530 if (channel_type != NL80211_CHAN_NO_HT &&
4531 channel_type != NL80211_CHAN_HT20 &&
4532 channel_type != NL80211_CHAN_HT40PLUS &&
4533 channel_type != NL80211_CHAN_HT40MINUS)
4534 return -EINVAL;
4535 channel_type_valid = true;
4536 }
4537
4538 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4539
4540 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4541 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4542 if (chan == NULL)
4543 return -EINVAL;
4544
4545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4546 if (!msg)
4547 return -ENOMEM;
4548
4549 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4550 NL80211_CMD_FRAME);
4551
4552 if (IS_ERR(hdr)) {
4553 err = PTR_ERR(hdr);
4554 goto free_msg;
4555 }
4556 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4557 channel_type_valid, wait,
4558 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4559 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4560 &cookie);
4561 if (err)
4562 goto free_msg;
4563
4564 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4565
4566 genlmsg_end(msg, hdr);
4567 return genlmsg_reply(msg, info);
4568
4569 nla_put_failure:
4570 err = -ENOBUFS;
4571 free_msg:
4572 nlmsg_free(msg);
4573 return err;
4574 }
4575
4576 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4577 {
4578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4579 struct net_device *dev = info->user_ptr[1];
4580 u64 cookie;
4581
4582 if (!info->attrs[NL80211_ATTR_COOKIE])
4583 return -EINVAL;
4584
4585 if (!rdev->ops->mgmt_tx_cancel_wait)
4586 return -EOPNOTSUPP;
4587
4588 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4589 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4590 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4591 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4592 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4593 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4594 return -EOPNOTSUPP;
4595
4596 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4597
4598 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4599 }
4600
4601 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4602 {
4603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4604 struct wireless_dev *wdev;
4605 struct net_device *dev = info->user_ptr[1];
4606 u8 ps_state;
4607 bool state;
4608 int err;
4609
4610 if (!info->attrs[NL80211_ATTR_PS_STATE])
4611 return -EINVAL;
4612
4613 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4614
4615 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4616 return -EINVAL;
4617
4618 wdev = dev->ieee80211_ptr;
4619
4620 if (!rdev->ops->set_power_mgmt)
4621 return -EOPNOTSUPP;
4622
4623 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4624
4625 if (state == wdev->ps)
4626 return 0;
4627
4628 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4629 wdev->ps_timeout);
4630 if (!err)
4631 wdev->ps = state;
4632 return err;
4633 }
4634
4635 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4636 {
4637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638 enum nl80211_ps_state ps_state;
4639 struct wireless_dev *wdev;
4640 struct net_device *dev = info->user_ptr[1];
4641 struct sk_buff *msg;
4642 void *hdr;
4643 int err;
4644
4645 wdev = dev->ieee80211_ptr;
4646
4647 if (!rdev->ops->set_power_mgmt)
4648 return -EOPNOTSUPP;
4649
4650 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4651 if (!msg)
4652 return -ENOMEM;
4653
4654 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4655 NL80211_CMD_GET_POWER_SAVE);
4656 if (!hdr) {
4657 err = -ENOBUFS;
4658 goto free_msg;
4659 }
4660
4661 if (wdev->ps)
4662 ps_state = NL80211_PS_ENABLED;
4663 else
4664 ps_state = NL80211_PS_DISABLED;
4665
4666 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4667
4668 genlmsg_end(msg, hdr);
4669 return genlmsg_reply(msg, info);
4670
4671 nla_put_failure:
4672 err = -ENOBUFS;
4673 free_msg:
4674 nlmsg_free(msg);
4675 return err;
4676 }
4677
4678 static struct nla_policy
4679 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4680 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4681 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4682 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4683 };
4684
4685 static int nl80211_set_cqm_rssi(struct genl_info *info,
4686 s32 threshold, u32 hysteresis)
4687 {
4688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4689 struct wireless_dev *wdev;
4690 struct net_device *dev = info->user_ptr[1];
4691
4692 if (threshold > 0)
4693 return -EINVAL;
4694
4695 wdev = dev->ieee80211_ptr;
4696
4697 if (!rdev->ops->set_cqm_rssi_config)
4698 return -EOPNOTSUPP;
4699
4700 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4701 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4702 return -EOPNOTSUPP;
4703
4704 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4705 threshold, hysteresis);
4706 }
4707
4708 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4709 {
4710 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4711 struct nlattr *cqm;
4712 int err;
4713
4714 cqm = info->attrs[NL80211_ATTR_CQM];
4715 if (!cqm) {
4716 err = -EINVAL;
4717 goto out;
4718 }
4719
4720 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4721 nl80211_attr_cqm_policy);
4722 if (err)
4723 goto out;
4724
4725 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4726 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4727 s32 threshold;
4728 u32 hysteresis;
4729 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4730 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4731 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4732 } else
4733 err = -EINVAL;
4734
4735 out:
4736 return err;
4737 }
4738
4739 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
4740 {
4741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4742 struct net_device *dev = info->user_ptr[1];
4743 struct mesh_config cfg;
4744 struct mesh_setup setup;
4745 int err;
4746
4747 /* start with default */
4748 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
4749 memcpy(&setup, &default_mesh_setup, sizeof(setup));
4750
4751 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
4752 /* and parse parameters if given */
4753 err = nl80211_parse_mesh_config(info, &cfg, NULL);
4754 if (err)
4755 return err;
4756 }
4757
4758 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
4759 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
4760 return -EINVAL;
4761
4762 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
4763 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4764
4765 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
4766 /* parse additional setup parameters if given */
4767 err = nl80211_parse_mesh_setup(info, &setup);
4768 if (err)
4769 return err;
4770 }
4771
4772 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
4773 }
4774
4775 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
4776 {
4777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4778 struct net_device *dev = info->user_ptr[1];
4779
4780 return cfg80211_leave_mesh(rdev, dev);
4781 }
4782
4783 #define NL80211_FLAG_NEED_WIPHY 0x01
4784 #define NL80211_FLAG_NEED_NETDEV 0x02
4785 #define NL80211_FLAG_NEED_RTNL 0x04
4786 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4787 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4788 NL80211_FLAG_CHECK_NETDEV_UP)
4789
4790 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4791 struct genl_info *info)
4792 {
4793 struct cfg80211_registered_device *rdev;
4794 struct net_device *dev;
4795 int err;
4796 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4797
4798 if (rtnl)
4799 rtnl_lock();
4800
4801 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4802 rdev = cfg80211_get_dev_from_info(info);
4803 if (IS_ERR(rdev)) {
4804 if (rtnl)
4805 rtnl_unlock();
4806 return PTR_ERR(rdev);
4807 }
4808 info->user_ptr[0] = rdev;
4809 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4810 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4811 if (err) {
4812 if (rtnl)
4813 rtnl_unlock();
4814 return err;
4815 }
4816 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4817 !netif_running(dev)) {
4818 cfg80211_unlock_rdev(rdev);
4819 dev_put(dev);
4820 if (rtnl)
4821 rtnl_unlock();
4822 return -ENETDOWN;
4823 }
4824 info->user_ptr[0] = rdev;
4825 info->user_ptr[1] = dev;
4826 }
4827
4828 return 0;
4829 }
4830
4831 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4832 struct genl_info *info)
4833 {
4834 if (info->user_ptr[0])
4835 cfg80211_unlock_rdev(info->user_ptr[0]);
4836 if (info->user_ptr[1])
4837 dev_put(info->user_ptr[1]);
4838 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4839 rtnl_unlock();
4840 }
4841
4842 static struct genl_ops nl80211_ops[] = {
4843 {
4844 .cmd = NL80211_CMD_GET_WIPHY,
4845 .doit = nl80211_get_wiphy,
4846 .dumpit = nl80211_dump_wiphy,
4847 .policy = nl80211_policy,
4848 /* can be retrieved by unprivileged users */
4849 .internal_flags = NL80211_FLAG_NEED_WIPHY,
4850 },
4851 {
4852 .cmd = NL80211_CMD_SET_WIPHY,
4853 .doit = nl80211_set_wiphy,
4854 .policy = nl80211_policy,
4855 .flags = GENL_ADMIN_PERM,
4856 .internal_flags = NL80211_FLAG_NEED_RTNL,
4857 },
4858 {
4859 .cmd = NL80211_CMD_GET_INTERFACE,
4860 .doit = nl80211_get_interface,
4861 .dumpit = nl80211_dump_interface,
4862 .policy = nl80211_policy,
4863 /* can be retrieved by unprivileged users */
4864 .internal_flags = NL80211_FLAG_NEED_NETDEV,
4865 },
4866 {
4867 .cmd = NL80211_CMD_SET_INTERFACE,
4868 .doit = nl80211_set_interface,
4869 .policy = nl80211_policy,
4870 .flags = GENL_ADMIN_PERM,
4871 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4872 NL80211_FLAG_NEED_RTNL,
4873 },
4874 {
4875 .cmd = NL80211_CMD_NEW_INTERFACE,
4876 .doit = nl80211_new_interface,
4877 .policy = nl80211_policy,
4878 .flags = GENL_ADMIN_PERM,
4879 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4880 NL80211_FLAG_NEED_RTNL,
4881 },
4882 {
4883 .cmd = NL80211_CMD_DEL_INTERFACE,
4884 .doit = nl80211_del_interface,
4885 .policy = nl80211_policy,
4886 .flags = GENL_ADMIN_PERM,
4887 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4888 NL80211_FLAG_NEED_RTNL,
4889 },
4890 {
4891 .cmd = NL80211_CMD_GET_KEY,
4892 .doit = nl80211_get_key,
4893 .policy = nl80211_policy,
4894 .flags = GENL_ADMIN_PERM,
4895 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4896 NL80211_FLAG_NEED_RTNL,
4897 },
4898 {
4899 .cmd = NL80211_CMD_SET_KEY,
4900 .doit = nl80211_set_key,
4901 .policy = nl80211_policy,
4902 .flags = GENL_ADMIN_PERM,
4903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4904 NL80211_FLAG_NEED_RTNL,
4905 },
4906 {
4907 .cmd = NL80211_CMD_NEW_KEY,
4908 .doit = nl80211_new_key,
4909 .policy = nl80211_policy,
4910 .flags = GENL_ADMIN_PERM,
4911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4912 NL80211_FLAG_NEED_RTNL,
4913 },
4914 {
4915 .cmd = NL80211_CMD_DEL_KEY,
4916 .doit = nl80211_del_key,
4917 .policy = nl80211_policy,
4918 .flags = GENL_ADMIN_PERM,
4919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4920 NL80211_FLAG_NEED_RTNL,
4921 },
4922 {
4923 .cmd = NL80211_CMD_SET_BEACON,
4924 .policy = nl80211_policy,
4925 .flags = GENL_ADMIN_PERM,
4926 .doit = nl80211_addset_beacon,
4927 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4928 NL80211_FLAG_NEED_RTNL,
4929 },
4930 {
4931 .cmd = NL80211_CMD_NEW_BEACON,
4932 .policy = nl80211_policy,
4933 .flags = GENL_ADMIN_PERM,
4934 .doit = nl80211_addset_beacon,
4935 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4936 NL80211_FLAG_NEED_RTNL,
4937 },
4938 {
4939 .cmd = NL80211_CMD_DEL_BEACON,
4940 .policy = nl80211_policy,
4941 .flags = GENL_ADMIN_PERM,
4942 .doit = nl80211_del_beacon,
4943 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4944 NL80211_FLAG_NEED_RTNL,
4945 },
4946 {
4947 .cmd = NL80211_CMD_GET_STATION,
4948 .doit = nl80211_get_station,
4949 .dumpit = nl80211_dump_station,
4950 .policy = nl80211_policy,
4951 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4952 NL80211_FLAG_NEED_RTNL,
4953 },
4954 {
4955 .cmd = NL80211_CMD_SET_STATION,
4956 .doit = nl80211_set_station,
4957 .policy = nl80211_policy,
4958 .flags = GENL_ADMIN_PERM,
4959 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4960 NL80211_FLAG_NEED_RTNL,
4961 },
4962 {
4963 .cmd = NL80211_CMD_NEW_STATION,
4964 .doit = nl80211_new_station,
4965 .policy = nl80211_policy,
4966 .flags = GENL_ADMIN_PERM,
4967 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4968 NL80211_FLAG_NEED_RTNL,
4969 },
4970 {
4971 .cmd = NL80211_CMD_DEL_STATION,
4972 .doit = nl80211_del_station,
4973 .policy = nl80211_policy,
4974 .flags = GENL_ADMIN_PERM,
4975 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4976 NL80211_FLAG_NEED_RTNL,
4977 },
4978 {
4979 .cmd = NL80211_CMD_GET_MPATH,
4980 .doit = nl80211_get_mpath,
4981 .dumpit = nl80211_dump_mpath,
4982 .policy = nl80211_policy,
4983 .flags = GENL_ADMIN_PERM,
4984 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4985 NL80211_FLAG_NEED_RTNL,
4986 },
4987 {
4988 .cmd = NL80211_CMD_SET_MPATH,
4989 .doit = nl80211_set_mpath,
4990 .policy = nl80211_policy,
4991 .flags = GENL_ADMIN_PERM,
4992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4993 NL80211_FLAG_NEED_RTNL,
4994 },
4995 {
4996 .cmd = NL80211_CMD_NEW_MPATH,
4997 .doit = nl80211_new_mpath,
4998 .policy = nl80211_policy,
4999 .flags = GENL_ADMIN_PERM,
5000 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5001 NL80211_FLAG_NEED_RTNL,
5002 },
5003 {
5004 .cmd = NL80211_CMD_DEL_MPATH,
5005 .doit = nl80211_del_mpath,
5006 .policy = nl80211_policy,
5007 .flags = GENL_ADMIN_PERM,
5008 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5009 NL80211_FLAG_NEED_RTNL,
5010 },
5011 {
5012 .cmd = NL80211_CMD_SET_BSS,
5013 .doit = nl80211_set_bss,
5014 .policy = nl80211_policy,
5015 .flags = GENL_ADMIN_PERM,
5016 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5017 NL80211_FLAG_NEED_RTNL,
5018 },
5019 {
5020 .cmd = NL80211_CMD_GET_REG,
5021 .doit = nl80211_get_reg,
5022 .policy = nl80211_policy,
5023 /* can be retrieved by unprivileged users */
5024 },
5025 {
5026 .cmd = NL80211_CMD_SET_REG,
5027 .doit = nl80211_set_reg,
5028 .policy = nl80211_policy,
5029 .flags = GENL_ADMIN_PERM,
5030 },
5031 {
5032 .cmd = NL80211_CMD_REQ_SET_REG,
5033 .doit = nl80211_req_set_reg,
5034 .policy = nl80211_policy,
5035 .flags = GENL_ADMIN_PERM,
5036 },
5037 {
5038 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5039 .doit = nl80211_get_mesh_config,
5040 .policy = nl80211_policy,
5041 /* can be retrieved by unprivileged users */
5042 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5043 NL80211_FLAG_NEED_RTNL,
5044 },
5045 {
5046 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5047 .doit = nl80211_update_mesh_config,
5048 .policy = nl80211_policy,
5049 .flags = GENL_ADMIN_PERM,
5050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5051 NL80211_FLAG_NEED_RTNL,
5052 },
5053 {
5054 .cmd = NL80211_CMD_TRIGGER_SCAN,
5055 .doit = nl80211_trigger_scan,
5056 .policy = nl80211_policy,
5057 .flags = GENL_ADMIN_PERM,
5058 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5059 NL80211_FLAG_NEED_RTNL,
5060 },
5061 {
5062 .cmd = NL80211_CMD_GET_SCAN,
5063 .policy = nl80211_policy,
5064 .dumpit = nl80211_dump_scan,
5065 },
5066 {
5067 .cmd = NL80211_CMD_AUTHENTICATE,
5068 .doit = nl80211_authenticate,
5069 .policy = nl80211_policy,
5070 .flags = GENL_ADMIN_PERM,
5071 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5072 NL80211_FLAG_NEED_RTNL,
5073 },
5074 {
5075 .cmd = NL80211_CMD_ASSOCIATE,
5076 .doit = nl80211_associate,
5077 .policy = nl80211_policy,
5078 .flags = GENL_ADMIN_PERM,
5079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5080 NL80211_FLAG_NEED_RTNL,
5081 },
5082 {
5083 .cmd = NL80211_CMD_DEAUTHENTICATE,
5084 .doit = nl80211_deauthenticate,
5085 .policy = nl80211_policy,
5086 .flags = GENL_ADMIN_PERM,
5087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5088 NL80211_FLAG_NEED_RTNL,
5089 },
5090 {
5091 .cmd = NL80211_CMD_DISASSOCIATE,
5092 .doit = nl80211_disassociate,
5093 .policy = nl80211_policy,
5094 .flags = GENL_ADMIN_PERM,
5095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5096 NL80211_FLAG_NEED_RTNL,
5097 },
5098 {
5099 .cmd = NL80211_CMD_JOIN_IBSS,
5100 .doit = nl80211_join_ibss,
5101 .policy = nl80211_policy,
5102 .flags = GENL_ADMIN_PERM,
5103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5104 NL80211_FLAG_NEED_RTNL,
5105 },
5106 {
5107 .cmd = NL80211_CMD_LEAVE_IBSS,
5108 .doit = nl80211_leave_ibss,
5109 .policy = nl80211_policy,
5110 .flags = GENL_ADMIN_PERM,
5111 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5112 NL80211_FLAG_NEED_RTNL,
5113 },
5114 #ifdef CONFIG_NL80211_TESTMODE
5115 {
5116 .cmd = NL80211_CMD_TESTMODE,
5117 .doit = nl80211_testmode_do,
5118 .policy = nl80211_policy,
5119 .flags = GENL_ADMIN_PERM,
5120 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5121 NL80211_FLAG_NEED_RTNL,
5122 },
5123 #endif
5124 {
5125 .cmd = NL80211_CMD_CONNECT,
5126 .doit = nl80211_connect,
5127 .policy = nl80211_policy,
5128 .flags = GENL_ADMIN_PERM,
5129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5130 NL80211_FLAG_NEED_RTNL,
5131 },
5132 {
5133 .cmd = NL80211_CMD_DISCONNECT,
5134 .doit = nl80211_disconnect,
5135 .policy = nl80211_policy,
5136 .flags = GENL_ADMIN_PERM,
5137 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5138 NL80211_FLAG_NEED_RTNL,
5139 },
5140 {
5141 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5142 .doit = nl80211_wiphy_netns,
5143 .policy = nl80211_policy,
5144 .flags = GENL_ADMIN_PERM,
5145 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5146 NL80211_FLAG_NEED_RTNL,
5147 },
5148 {
5149 .cmd = NL80211_CMD_GET_SURVEY,
5150 .policy = nl80211_policy,
5151 .dumpit = nl80211_dump_survey,
5152 },
5153 {
5154 .cmd = NL80211_CMD_SET_PMKSA,
5155 .doit = nl80211_setdel_pmksa,
5156 .policy = nl80211_policy,
5157 .flags = GENL_ADMIN_PERM,
5158 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5159 NL80211_FLAG_NEED_RTNL,
5160 },
5161 {
5162 .cmd = NL80211_CMD_DEL_PMKSA,
5163 .doit = nl80211_setdel_pmksa,
5164 .policy = nl80211_policy,
5165 .flags = GENL_ADMIN_PERM,
5166 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5167 NL80211_FLAG_NEED_RTNL,
5168 },
5169 {
5170 .cmd = NL80211_CMD_FLUSH_PMKSA,
5171 .doit = nl80211_flush_pmksa,
5172 .policy = nl80211_policy,
5173 .flags = GENL_ADMIN_PERM,
5174 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5175 NL80211_FLAG_NEED_RTNL,
5176 },
5177 {
5178 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5179 .doit = nl80211_remain_on_channel,
5180 .policy = nl80211_policy,
5181 .flags = GENL_ADMIN_PERM,
5182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5183 NL80211_FLAG_NEED_RTNL,
5184 },
5185 {
5186 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5187 .doit = nl80211_cancel_remain_on_channel,
5188 .policy = nl80211_policy,
5189 .flags = GENL_ADMIN_PERM,
5190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5191 NL80211_FLAG_NEED_RTNL,
5192 },
5193 {
5194 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5195 .doit = nl80211_set_tx_bitrate_mask,
5196 .policy = nl80211_policy,
5197 .flags = GENL_ADMIN_PERM,
5198 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5199 NL80211_FLAG_NEED_RTNL,
5200 },
5201 {
5202 .cmd = NL80211_CMD_REGISTER_FRAME,
5203 .doit = nl80211_register_mgmt,
5204 .policy = nl80211_policy,
5205 .flags = GENL_ADMIN_PERM,
5206 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5207 NL80211_FLAG_NEED_RTNL,
5208 },
5209 {
5210 .cmd = NL80211_CMD_FRAME,
5211 .doit = nl80211_tx_mgmt,
5212 .policy = nl80211_policy,
5213 .flags = GENL_ADMIN_PERM,
5214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5215 NL80211_FLAG_NEED_RTNL,
5216 },
5217 {
5218 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5219 .doit = nl80211_tx_mgmt_cancel_wait,
5220 .policy = nl80211_policy,
5221 .flags = GENL_ADMIN_PERM,
5222 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5223 NL80211_FLAG_NEED_RTNL,
5224 },
5225 {
5226 .cmd = NL80211_CMD_SET_POWER_SAVE,
5227 .doit = nl80211_set_power_save,
5228 .policy = nl80211_policy,
5229 .flags = GENL_ADMIN_PERM,
5230 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5231 NL80211_FLAG_NEED_RTNL,
5232 },
5233 {
5234 .cmd = NL80211_CMD_GET_POWER_SAVE,
5235 .doit = nl80211_get_power_save,
5236 .policy = nl80211_policy,
5237 /* can be retrieved by unprivileged users */
5238 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5239 NL80211_FLAG_NEED_RTNL,
5240 },
5241 {
5242 .cmd = NL80211_CMD_SET_CQM,
5243 .doit = nl80211_set_cqm,
5244 .policy = nl80211_policy,
5245 .flags = GENL_ADMIN_PERM,
5246 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5247 NL80211_FLAG_NEED_RTNL,
5248 },
5249 {
5250 .cmd = NL80211_CMD_SET_CHANNEL,
5251 .doit = nl80211_set_channel,
5252 .policy = nl80211_policy,
5253 .flags = GENL_ADMIN_PERM,
5254 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5255 NL80211_FLAG_NEED_RTNL,
5256 },
5257 {
5258 .cmd = NL80211_CMD_SET_WDS_PEER,
5259 .doit = nl80211_set_wds_peer,
5260 .policy = nl80211_policy,
5261 .flags = GENL_ADMIN_PERM,
5262 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5263 NL80211_FLAG_NEED_RTNL,
5264 },
5265 {
5266 .cmd = NL80211_CMD_JOIN_MESH,
5267 .doit = nl80211_join_mesh,
5268 .policy = nl80211_policy,
5269 .flags = GENL_ADMIN_PERM,
5270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5271 NL80211_FLAG_NEED_RTNL,
5272 },
5273 {
5274 .cmd = NL80211_CMD_LEAVE_MESH,
5275 .doit = nl80211_leave_mesh,
5276 .policy = nl80211_policy,
5277 .flags = GENL_ADMIN_PERM,
5278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5279 NL80211_FLAG_NEED_RTNL,
5280 },
5281 };
5282
5283 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5284 .name = "mlme",
5285 };
5286
5287 /* multicast groups */
5288 static struct genl_multicast_group nl80211_config_mcgrp = {
5289 .name = "config",
5290 };
5291 static struct genl_multicast_group nl80211_scan_mcgrp = {
5292 .name = "scan",
5293 };
5294 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5295 .name = "regulatory",
5296 };
5297
5298 /* notification functions */
5299
5300 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5301 {
5302 struct sk_buff *msg;
5303
5304 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5305 if (!msg)
5306 return;
5307
5308 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5309 nlmsg_free(msg);
5310 return;
5311 }
5312
5313 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5314 nl80211_config_mcgrp.id, GFP_KERNEL);
5315 }
5316
5317 static int nl80211_add_scan_req(struct sk_buff *msg,
5318 struct cfg80211_registered_device *rdev)
5319 {
5320 struct cfg80211_scan_request *req = rdev->scan_req;
5321 struct nlattr *nest;
5322 int i;
5323
5324 ASSERT_RDEV_LOCK(rdev);
5325
5326 if (WARN_ON(!req))
5327 return 0;
5328
5329 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5330 if (!nest)
5331 goto nla_put_failure;
5332 for (i = 0; i < req->n_ssids; i++)
5333 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5334 nla_nest_end(msg, nest);
5335
5336 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5337 if (!nest)
5338 goto nla_put_failure;
5339 for (i = 0; i < req->n_channels; i++)
5340 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5341 nla_nest_end(msg, nest);
5342
5343 if (req->ie)
5344 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5345
5346 return 0;
5347 nla_put_failure:
5348 return -ENOBUFS;
5349 }
5350
5351 static int nl80211_send_scan_msg(struct sk_buff *msg,
5352 struct cfg80211_registered_device *rdev,
5353 struct net_device *netdev,
5354 u32 pid, u32 seq, int flags,
5355 u32 cmd)
5356 {
5357 void *hdr;
5358
5359 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5360 if (!hdr)
5361 return -1;
5362
5363 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5364 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5365
5366 /* ignore errors and send incomplete event anyway */
5367 nl80211_add_scan_req(msg, rdev);
5368
5369 return genlmsg_end(msg, hdr);
5370
5371 nla_put_failure:
5372 genlmsg_cancel(msg, hdr);
5373 return -EMSGSIZE;
5374 }
5375
5376 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5377 struct net_device *netdev)
5378 {
5379 struct sk_buff *msg;
5380
5381 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5382 if (!msg)
5383 return;
5384
5385 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5386 NL80211_CMD_TRIGGER_SCAN) < 0) {
5387 nlmsg_free(msg);
5388 return;
5389 }
5390
5391 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5392 nl80211_scan_mcgrp.id, GFP_KERNEL);
5393 }
5394
5395 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5396 struct net_device *netdev)
5397 {
5398 struct sk_buff *msg;
5399
5400 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5401 if (!msg)
5402 return;
5403
5404 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5405 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5406 nlmsg_free(msg);
5407 return;
5408 }
5409
5410 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5411 nl80211_scan_mcgrp.id, GFP_KERNEL);
5412 }
5413
5414 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5415 struct net_device *netdev)
5416 {
5417 struct sk_buff *msg;
5418
5419 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5420 if (!msg)
5421 return;
5422
5423 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5424 NL80211_CMD_SCAN_ABORTED) < 0) {
5425 nlmsg_free(msg);
5426 return;
5427 }
5428
5429 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5430 nl80211_scan_mcgrp.id, GFP_KERNEL);
5431 }
5432
5433 /*
5434 * This can happen on global regulatory changes or device specific settings
5435 * based on custom world regulatory domains.
5436 */
5437 void nl80211_send_reg_change_event(struct regulatory_request *request)
5438 {
5439 struct sk_buff *msg;
5440 void *hdr;
5441
5442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5443 if (!msg)
5444 return;
5445
5446 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5447 if (!hdr) {
5448 nlmsg_free(msg);
5449 return;
5450 }
5451
5452 /* Userspace can always count this one always being set */
5453 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5454
5455 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5456 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5457 NL80211_REGDOM_TYPE_WORLD);
5458 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5459 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5460 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5461 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5462 request->intersect)
5463 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5464 NL80211_REGDOM_TYPE_INTERSECTION);
5465 else {
5466 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5467 NL80211_REGDOM_TYPE_COUNTRY);
5468 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5469 }
5470
5471 if (wiphy_idx_valid(request->wiphy_idx))
5472 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5473
5474 if (genlmsg_end(msg, hdr) < 0) {
5475 nlmsg_free(msg);
5476 return;
5477 }
5478
5479 rcu_read_lock();
5480 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5481 GFP_ATOMIC);
5482 rcu_read_unlock();
5483
5484 return;
5485
5486 nla_put_failure:
5487 genlmsg_cancel(msg, hdr);
5488 nlmsg_free(msg);
5489 }
5490
5491 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5492 struct net_device *netdev,
5493 const u8 *buf, size_t len,
5494 enum nl80211_commands cmd, gfp_t gfp)
5495 {
5496 struct sk_buff *msg;
5497 void *hdr;
5498
5499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5500 if (!msg)
5501 return;
5502
5503 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5504 if (!hdr) {
5505 nlmsg_free(msg);
5506 return;
5507 }
5508
5509 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5510 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5511 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5512
5513 if (genlmsg_end(msg, hdr) < 0) {
5514 nlmsg_free(msg);
5515 return;
5516 }
5517
5518 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5519 nl80211_mlme_mcgrp.id, gfp);
5520 return;
5521
5522 nla_put_failure:
5523 genlmsg_cancel(msg, hdr);
5524 nlmsg_free(msg);
5525 }
5526
5527 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5528 struct net_device *netdev, const u8 *buf,
5529 size_t len, gfp_t gfp)
5530 {
5531 nl80211_send_mlme_event(rdev, netdev, buf, len,
5532 NL80211_CMD_AUTHENTICATE, gfp);
5533 }
5534
5535 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5536 struct net_device *netdev, const u8 *buf,
5537 size_t len, gfp_t gfp)
5538 {
5539 nl80211_send_mlme_event(rdev, netdev, buf, len,
5540 NL80211_CMD_ASSOCIATE, gfp);
5541 }
5542
5543 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5544 struct net_device *netdev, const u8 *buf,
5545 size_t len, gfp_t gfp)
5546 {
5547 nl80211_send_mlme_event(rdev, netdev, buf, len,
5548 NL80211_CMD_DEAUTHENTICATE, gfp);
5549 }
5550
5551 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5552 struct net_device *netdev, const u8 *buf,
5553 size_t len, gfp_t gfp)
5554 {
5555 nl80211_send_mlme_event(rdev, netdev, buf, len,
5556 NL80211_CMD_DISASSOCIATE, gfp);
5557 }
5558
5559 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
5560 struct net_device *netdev, const u8 *buf,
5561 size_t len, gfp_t gfp)
5562 {
5563 nl80211_send_mlme_event(rdev, netdev, buf, len,
5564 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
5565 }
5566
5567 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
5568 struct net_device *netdev, const u8 *buf,
5569 size_t len, gfp_t gfp)
5570 {
5571 nl80211_send_mlme_event(rdev, netdev, buf, len,
5572 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
5573 }
5574
5575 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5576 struct net_device *netdev, int cmd,
5577 const u8 *addr, gfp_t gfp)
5578 {
5579 struct sk_buff *msg;
5580 void *hdr;
5581
5582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5583 if (!msg)
5584 return;
5585
5586 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5587 if (!hdr) {
5588 nlmsg_free(msg);
5589 return;
5590 }
5591
5592 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5593 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5594 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5595 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5596
5597 if (genlmsg_end(msg, hdr) < 0) {
5598 nlmsg_free(msg);
5599 return;
5600 }
5601
5602 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5603 nl80211_mlme_mcgrp.id, gfp);
5604 return;
5605
5606 nla_put_failure:
5607 genlmsg_cancel(msg, hdr);
5608 nlmsg_free(msg);
5609 }
5610
5611 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5612 struct net_device *netdev, const u8 *addr,
5613 gfp_t gfp)
5614 {
5615 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5616 addr, gfp);
5617 }
5618
5619 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5620 struct net_device *netdev, const u8 *addr,
5621 gfp_t gfp)
5622 {
5623 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5624 addr, gfp);
5625 }
5626
5627 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5628 struct net_device *netdev, const u8 *bssid,
5629 const u8 *req_ie, size_t req_ie_len,
5630 const u8 *resp_ie, size_t resp_ie_len,
5631 u16 status, gfp_t gfp)
5632 {
5633 struct sk_buff *msg;
5634 void *hdr;
5635
5636 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5637 if (!msg)
5638 return;
5639
5640 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5641 if (!hdr) {
5642 nlmsg_free(msg);
5643 return;
5644 }
5645
5646 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5647 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5648 if (bssid)
5649 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5650 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5651 if (req_ie)
5652 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5653 if (resp_ie)
5654 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5655
5656 if (genlmsg_end(msg, hdr) < 0) {
5657 nlmsg_free(msg);
5658 return;
5659 }
5660
5661 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5662 nl80211_mlme_mcgrp.id, gfp);
5663 return;
5664
5665 nla_put_failure:
5666 genlmsg_cancel(msg, hdr);
5667 nlmsg_free(msg);
5668
5669 }
5670
5671 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5672 struct net_device *netdev, const u8 *bssid,
5673 const u8 *req_ie, size_t req_ie_len,
5674 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5675 {
5676 struct sk_buff *msg;
5677 void *hdr;
5678
5679 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5680 if (!msg)
5681 return;
5682
5683 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5684 if (!hdr) {
5685 nlmsg_free(msg);
5686 return;
5687 }
5688
5689 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5690 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5691 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5692 if (req_ie)
5693 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5694 if (resp_ie)
5695 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5696
5697 if (genlmsg_end(msg, hdr) < 0) {
5698 nlmsg_free(msg);
5699 return;
5700 }
5701
5702 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5703 nl80211_mlme_mcgrp.id, gfp);
5704 return;
5705
5706 nla_put_failure:
5707 genlmsg_cancel(msg, hdr);
5708 nlmsg_free(msg);
5709
5710 }
5711
5712 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5713 struct net_device *netdev, u16 reason,
5714 const u8 *ie, size_t ie_len, bool from_ap)
5715 {
5716 struct sk_buff *msg;
5717 void *hdr;
5718
5719 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5720 if (!msg)
5721 return;
5722
5723 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5724 if (!hdr) {
5725 nlmsg_free(msg);
5726 return;
5727 }
5728
5729 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5730 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5731 if (from_ap && reason)
5732 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5733 if (from_ap)
5734 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5735 if (ie)
5736 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5737
5738 if (genlmsg_end(msg, hdr) < 0) {
5739 nlmsg_free(msg);
5740 return;
5741 }
5742
5743 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5744 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5745 return;
5746
5747 nla_put_failure:
5748 genlmsg_cancel(msg, hdr);
5749 nlmsg_free(msg);
5750
5751 }
5752
5753 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5754 struct net_device *netdev, const u8 *bssid,
5755 gfp_t gfp)
5756 {
5757 struct sk_buff *msg;
5758 void *hdr;
5759
5760 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5761 if (!msg)
5762 return;
5763
5764 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5765 if (!hdr) {
5766 nlmsg_free(msg);
5767 return;
5768 }
5769
5770 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5771 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5772 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5773
5774 if (genlmsg_end(msg, hdr) < 0) {
5775 nlmsg_free(msg);
5776 return;
5777 }
5778
5779 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5780 nl80211_mlme_mcgrp.id, gfp);
5781 return;
5782
5783 nla_put_failure:
5784 genlmsg_cancel(msg, hdr);
5785 nlmsg_free(msg);
5786 }
5787
5788 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5789 struct net_device *netdev, const u8 *addr,
5790 enum nl80211_key_type key_type, int key_id,
5791 const u8 *tsc, gfp_t gfp)
5792 {
5793 struct sk_buff *msg;
5794 void *hdr;
5795
5796 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5797 if (!msg)
5798 return;
5799
5800 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5801 if (!hdr) {
5802 nlmsg_free(msg);
5803 return;
5804 }
5805
5806 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5807 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5808 if (addr)
5809 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5810 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5811 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5812 if (tsc)
5813 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5814
5815 if (genlmsg_end(msg, hdr) < 0) {
5816 nlmsg_free(msg);
5817 return;
5818 }
5819
5820 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5821 nl80211_mlme_mcgrp.id, gfp);
5822 return;
5823
5824 nla_put_failure:
5825 genlmsg_cancel(msg, hdr);
5826 nlmsg_free(msg);
5827 }
5828
5829 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5830 struct ieee80211_channel *channel_before,
5831 struct ieee80211_channel *channel_after)
5832 {
5833 struct sk_buff *msg;
5834 void *hdr;
5835 struct nlattr *nl_freq;
5836
5837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5838 if (!msg)
5839 return;
5840
5841 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5842 if (!hdr) {
5843 nlmsg_free(msg);
5844 return;
5845 }
5846
5847 /*
5848 * Since we are applying the beacon hint to a wiphy we know its
5849 * wiphy_idx is valid
5850 */
5851 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5852
5853 /* Before */
5854 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5855 if (!nl_freq)
5856 goto nla_put_failure;
5857 if (nl80211_msg_put_channel(msg, channel_before))
5858 goto nla_put_failure;
5859 nla_nest_end(msg, nl_freq);
5860
5861 /* After */
5862 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5863 if (!nl_freq)
5864 goto nla_put_failure;
5865 if (nl80211_msg_put_channel(msg, channel_after))
5866 goto nla_put_failure;
5867 nla_nest_end(msg, nl_freq);
5868
5869 if (genlmsg_end(msg, hdr) < 0) {
5870 nlmsg_free(msg);
5871 return;
5872 }
5873
5874 rcu_read_lock();
5875 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5876 GFP_ATOMIC);
5877 rcu_read_unlock();
5878
5879 return;
5880
5881 nla_put_failure:
5882 genlmsg_cancel(msg, hdr);
5883 nlmsg_free(msg);
5884 }
5885
5886 static void nl80211_send_remain_on_chan_event(
5887 int cmd, struct cfg80211_registered_device *rdev,
5888 struct net_device *netdev, u64 cookie,
5889 struct ieee80211_channel *chan,
5890 enum nl80211_channel_type channel_type,
5891 unsigned int duration, gfp_t gfp)
5892 {
5893 struct sk_buff *msg;
5894 void *hdr;
5895
5896 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5897 if (!msg)
5898 return;
5899
5900 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5901 if (!hdr) {
5902 nlmsg_free(msg);
5903 return;
5904 }
5905
5906 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5907 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5908 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5909 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5910 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5911
5912 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5913 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5914
5915 if (genlmsg_end(msg, hdr) < 0) {
5916 nlmsg_free(msg);
5917 return;
5918 }
5919
5920 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5921 nl80211_mlme_mcgrp.id, gfp);
5922 return;
5923
5924 nla_put_failure:
5925 genlmsg_cancel(msg, hdr);
5926 nlmsg_free(msg);
5927 }
5928
5929 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5930 struct net_device *netdev, u64 cookie,
5931 struct ieee80211_channel *chan,
5932 enum nl80211_channel_type channel_type,
5933 unsigned int duration, gfp_t gfp)
5934 {
5935 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5936 rdev, netdev, cookie, chan,
5937 channel_type, duration, gfp);
5938 }
5939
5940 void nl80211_send_remain_on_channel_cancel(
5941 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5942 u64 cookie, struct ieee80211_channel *chan,
5943 enum nl80211_channel_type channel_type, gfp_t gfp)
5944 {
5945 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5946 rdev, netdev, cookie, chan,
5947 channel_type, 0, gfp);
5948 }
5949
5950 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5951 struct net_device *dev, const u8 *mac_addr,
5952 struct station_info *sinfo, gfp_t gfp)
5953 {
5954 struct sk_buff *msg;
5955
5956 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5957 if (!msg)
5958 return;
5959
5960 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5961 nlmsg_free(msg);
5962 return;
5963 }
5964
5965 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5966 nl80211_mlme_mcgrp.id, gfp);
5967 }
5968
5969 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5970 struct net_device *netdev, u32 nlpid,
5971 int freq, const u8 *buf, size_t len, gfp_t gfp)
5972 {
5973 struct sk_buff *msg;
5974 void *hdr;
5975 int err;
5976
5977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5978 if (!msg)
5979 return -ENOMEM;
5980
5981 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
5982 if (!hdr) {
5983 nlmsg_free(msg);
5984 return -ENOMEM;
5985 }
5986
5987 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5988 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5989 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5990 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5991
5992 err = genlmsg_end(msg, hdr);
5993 if (err < 0) {
5994 nlmsg_free(msg);
5995 return err;
5996 }
5997
5998 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5999 if (err < 0)
6000 return err;
6001 return 0;
6002
6003 nla_put_failure:
6004 genlmsg_cancel(msg, hdr);
6005 nlmsg_free(msg);
6006 return -ENOBUFS;
6007 }
6008
6009 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6010 struct net_device *netdev, u64 cookie,
6011 const u8 *buf, size_t len, bool ack,
6012 gfp_t gfp)
6013 {
6014 struct sk_buff *msg;
6015 void *hdr;
6016
6017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6018 if (!msg)
6019 return;
6020
6021 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6022 if (!hdr) {
6023 nlmsg_free(msg);
6024 return;
6025 }
6026
6027 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6028 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6029 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6030 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6031 if (ack)
6032 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6033
6034 if (genlmsg_end(msg, hdr) < 0) {
6035 nlmsg_free(msg);
6036 return;
6037 }
6038
6039 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6040 return;
6041
6042 nla_put_failure:
6043 genlmsg_cancel(msg, hdr);
6044 nlmsg_free(msg);
6045 }
6046
6047 void
6048 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6049 struct net_device *netdev,
6050 enum nl80211_cqm_rssi_threshold_event rssi_event,
6051 gfp_t gfp)
6052 {
6053 struct sk_buff *msg;
6054 struct nlattr *pinfoattr;
6055 void *hdr;
6056
6057 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6058 if (!msg)
6059 return;
6060
6061 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6062 if (!hdr) {
6063 nlmsg_free(msg);
6064 return;
6065 }
6066
6067 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6068 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6069
6070 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6071 if (!pinfoattr)
6072 goto nla_put_failure;
6073
6074 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6075 rssi_event);
6076
6077 nla_nest_end(msg, pinfoattr);
6078
6079 if (genlmsg_end(msg, hdr) < 0) {
6080 nlmsg_free(msg);
6081 return;
6082 }
6083
6084 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6085 nl80211_mlme_mcgrp.id, gfp);
6086 return;
6087
6088 nla_put_failure:
6089 genlmsg_cancel(msg, hdr);
6090 nlmsg_free(msg);
6091 }
6092
6093 void
6094 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6095 struct net_device *netdev, const u8 *peer,
6096 u32 num_packets, gfp_t gfp)
6097 {
6098 struct sk_buff *msg;
6099 struct nlattr *pinfoattr;
6100 void *hdr;
6101
6102 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6103 if (!msg)
6104 return;
6105
6106 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6107 if (!hdr) {
6108 nlmsg_free(msg);
6109 return;
6110 }
6111
6112 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6113 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6114 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6115
6116 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6117 if (!pinfoattr)
6118 goto nla_put_failure;
6119
6120 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6121
6122 nla_nest_end(msg, pinfoattr);
6123
6124 if (genlmsg_end(msg, hdr) < 0) {
6125 nlmsg_free(msg);
6126 return;
6127 }
6128
6129 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6130 nl80211_mlme_mcgrp.id, gfp);
6131 return;
6132
6133 nla_put_failure:
6134 genlmsg_cancel(msg, hdr);
6135 nlmsg_free(msg);
6136 }
6137
6138 static int nl80211_netlink_notify(struct notifier_block * nb,
6139 unsigned long state,
6140 void *_notify)
6141 {
6142 struct netlink_notify *notify = _notify;
6143 struct cfg80211_registered_device *rdev;
6144 struct wireless_dev *wdev;
6145
6146 if (state != NETLINK_URELEASE)
6147 return NOTIFY_DONE;
6148
6149 rcu_read_lock();
6150
6151 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6152 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6153 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6154
6155 rcu_read_unlock();
6156
6157 return NOTIFY_DONE;
6158 }
6159
6160 static struct notifier_block nl80211_netlink_notifier = {
6161 .notifier_call = nl80211_netlink_notify,
6162 };
6163
6164 /* initialisation/exit functions */
6165
6166 int nl80211_init(void)
6167 {
6168 int err;
6169
6170 err = genl_register_family_with_ops(&nl80211_fam,
6171 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6172 if (err)
6173 return err;
6174
6175 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6176 if (err)
6177 goto err_out;
6178
6179 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6180 if (err)
6181 goto err_out;
6182
6183 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6184 if (err)
6185 goto err_out;
6186
6187 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6188 if (err)
6189 goto err_out;
6190
6191 #ifdef CONFIG_NL80211_TESTMODE
6192 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6193 if (err)
6194 goto err_out;
6195 #endif
6196
6197 err = netlink_register_notifier(&nl80211_netlink_notifier);
6198 if (err)
6199 goto err_out;
6200
6201 return 0;
6202 err_out:
6203 genl_unregister_family(&nl80211_fam);
6204 return err;
6205 }
6206
6207 void nl80211_exit(void)
6208 {
6209 netlink_unregister_notifier(&nl80211_netlink_notifier);
6210 genl_unregister_family(&nl80211_fam);
6211 }
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