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thp: KSM on THP
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob9b62710891a2b3ebd188e013975537c33bd172e9
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 int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1972 int flags, struct net_device *dev,
1973 const u8 *mac_addr, struct station_info *sinfo)
1974 {
1975 void *hdr;
1976 struct nlattr *sinfoattr, *txrate;
1977 u16 bitrate;
1978
1979 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1980 if (!hdr)
1981 return -1;
1982
1983 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1984 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1985
1986 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
1987
1988 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1989 if (!sinfoattr)
1990 goto nla_put_failure;
1991 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1992 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1993 sinfo->inactive_time);
1994 if (sinfo->filled & STATION_INFO_RX_BYTES)
1995 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1996 sinfo->rx_bytes);
1997 if (sinfo->filled & STATION_INFO_TX_BYTES)
1998 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1999 sinfo->tx_bytes);
2000 if (sinfo->filled & STATION_INFO_LLID)
2001 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2002 sinfo->llid);
2003 if (sinfo->filled & STATION_INFO_PLID)
2004 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2005 sinfo->plid);
2006 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2007 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2008 sinfo->plink_state);
2009 if (sinfo->filled & STATION_INFO_SIGNAL)
2010 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2011 sinfo->signal);
2012 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2013 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2014 sinfo->signal_avg);
2015 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2016 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
2017 if (!txrate)
2018 goto nla_put_failure;
2019
2020 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2021 bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
2022 if (bitrate > 0)
2023 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2024
2025 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
2026 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
2027 sinfo->txrate.mcs);
2028 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2029 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2030 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
2031 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2032
2033 nla_nest_end(msg, txrate);
2034 }
2035 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2036 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2037 sinfo->rx_packets);
2038 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2039 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2040 sinfo->tx_packets);
2041 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2042 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2043 sinfo->tx_retries);
2044 if (sinfo->filled & STATION_INFO_TX_FAILED)
2045 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2046 sinfo->tx_failed);
2047 nla_nest_end(msg, sinfoattr);
2048
2049 return genlmsg_end(msg, hdr);
2050
2051 nla_put_failure:
2052 genlmsg_cancel(msg, hdr);
2053 return -EMSGSIZE;
2054 }
2055
2056 static int nl80211_dump_station(struct sk_buff *skb,
2057 struct netlink_callback *cb)
2058 {
2059 struct station_info sinfo;
2060 struct cfg80211_registered_device *dev;
2061 struct net_device *netdev;
2062 u8 mac_addr[ETH_ALEN];
2063 int sta_idx = cb->args[1];
2064 int err;
2065
2066 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2067 if (err)
2068 return err;
2069
2070 if (!dev->ops->dump_station) {
2071 err = -EOPNOTSUPP;
2072 goto out_err;
2073 }
2074
2075 while (1) {
2076 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2077 mac_addr, &sinfo);
2078 if (err == -ENOENT)
2079 break;
2080 if (err)
2081 goto out_err;
2082
2083 if (nl80211_send_station(skb,
2084 NETLINK_CB(cb->skb).pid,
2085 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2086 netdev, mac_addr,
2087 &sinfo) < 0)
2088 goto out;
2089
2090 sta_idx++;
2091 }
2092
2093
2094 out:
2095 cb->args[1] = sta_idx;
2096 err = skb->len;
2097 out_err:
2098 nl80211_finish_netdev_dump(dev);
2099
2100 return err;
2101 }
2102
2103 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2104 {
2105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2106 struct net_device *dev = info->user_ptr[1];
2107 struct station_info sinfo;
2108 struct sk_buff *msg;
2109 u8 *mac_addr = NULL;
2110 int err;
2111
2112 memset(&sinfo, 0, sizeof(sinfo));
2113
2114 if (!info->attrs[NL80211_ATTR_MAC])
2115 return -EINVAL;
2116
2117 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2118
2119 if (!rdev->ops->get_station)
2120 return -EOPNOTSUPP;
2121
2122 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2123 if (err)
2124 return err;
2125
2126 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2127 if (!msg)
2128 return -ENOMEM;
2129
2130 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2131 dev, mac_addr, &sinfo) < 0) {
2132 nlmsg_free(msg);
2133 return -ENOBUFS;
2134 }
2135
2136 return genlmsg_reply(msg, info);
2137 }
2138
2139 /*
2140 * Get vlan interface making sure it is running and on the right wiphy.
2141 */
2142 static int get_vlan(struct genl_info *info,
2143 struct cfg80211_registered_device *rdev,
2144 struct net_device **vlan)
2145 {
2146 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2147 *vlan = NULL;
2148
2149 if (vlanattr) {
2150 *vlan = dev_get_by_index(genl_info_net(info),
2151 nla_get_u32(vlanattr));
2152 if (!*vlan)
2153 return -ENODEV;
2154 if (!(*vlan)->ieee80211_ptr)
2155 return -EINVAL;
2156 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2157 return -EINVAL;
2158 if (!netif_running(*vlan))
2159 return -ENETDOWN;
2160 }
2161 return 0;
2162 }
2163
2164 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2165 {
2166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2167 int err;
2168 struct net_device *dev = info->user_ptr[1];
2169 struct station_parameters params;
2170 u8 *mac_addr = NULL;
2171
2172 memset(&params, 0, sizeof(params));
2173
2174 params.listen_interval = -1;
2175
2176 if (info->attrs[NL80211_ATTR_STA_AID])
2177 return -EINVAL;
2178
2179 if (!info->attrs[NL80211_ATTR_MAC])
2180 return -EINVAL;
2181
2182 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2183
2184 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2185 params.supported_rates =
2186 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2187 params.supported_rates_len =
2188 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2189 }
2190
2191 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2192 params.listen_interval =
2193 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2194
2195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2196 params.ht_capa =
2197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2198
2199 if (parse_station_flags(info, &params))
2200 return -EINVAL;
2201
2202 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2203 params.plink_action =
2204 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2205
2206 err = get_vlan(info, rdev, &params.vlan);
2207 if (err)
2208 goto out;
2209
2210 /* validate settings */
2211 err = 0;
2212
2213 switch (dev->ieee80211_ptr->iftype) {
2214 case NL80211_IFTYPE_AP:
2215 case NL80211_IFTYPE_AP_VLAN:
2216 case NL80211_IFTYPE_P2P_GO:
2217 /* disallow mesh-specific things */
2218 if (params.plink_action)
2219 err = -EINVAL;
2220 break;
2221 case NL80211_IFTYPE_P2P_CLIENT:
2222 case NL80211_IFTYPE_STATION:
2223 /* disallow everything but AUTHORIZED flag */
2224 if (params.plink_action)
2225 err = -EINVAL;
2226 if (params.vlan)
2227 err = -EINVAL;
2228 if (params.supported_rates)
2229 err = -EINVAL;
2230 if (params.ht_capa)
2231 err = -EINVAL;
2232 if (params.listen_interval >= 0)
2233 err = -EINVAL;
2234 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2235 err = -EINVAL;
2236 break;
2237 case NL80211_IFTYPE_MESH_POINT:
2238 /* disallow things mesh doesn't support */
2239 if (params.vlan)
2240 err = -EINVAL;
2241 if (params.ht_capa)
2242 err = -EINVAL;
2243 if (params.listen_interval >= 0)
2244 err = -EINVAL;
2245 if (params.supported_rates)
2246 err = -EINVAL;
2247 if (params.sta_flags_mask)
2248 err = -EINVAL;
2249 break;
2250 default:
2251 err = -EINVAL;
2252 }
2253
2254 if (err)
2255 goto out;
2256
2257 if (!rdev->ops->change_station) {
2258 err = -EOPNOTSUPP;
2259 goto out;
2260 }
2261
2262 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2263
2264 out:
2265 if (params.vlan)
2266 dev_put(params.vlan);
2267
2268 return err;
2269 }
2270
2271 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2272 {
2273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2274 int err;
2275 struct net_device *dev = info->user_ptr[1];
2276 struct station_parameters params;
2277 u8 *mac_addr = NULL;
2278
2279 memset(&params, 0, sizeof(params));
2280
2281 if (!info->attrs[NL80211_ATTR_MAC])
2282 return -EINVAL;
2283
2284 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2285 return -EINVAL;
2286
2287 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2288 return -EINVAL;
2289
2290 if (!info->attrs[NL80211_ATTR_STA_AID])
2291 return -EINVAL;
2292
2293 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2294 params.supported_rates =
2295 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2296 params.supported_rates_len =
2297 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2298 params.listen_interval =
2299 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2300
2301 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2302 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2303 return -EINVAL;
2304
2305 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2306 params.ht_capa =
2307 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2308
2309 if (parse_station_flags(info, &params))
2310 return -EINVAL;
2311
2312 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2313 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2314 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2315 return -EINVAL;
2316
2317 err = get_vlan(info, rdev, &params.vlan);
2318 if (err)
2319 goto out;
2320
2321 /* validate settings */
2322 err = 0;
2323
2324 if (!rdev->ops->add_station) {
2325 err = -EOPNOTSUPP;
2326 goto out;
2327 }
2328
2329 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2330
2331 out:
2332 if (params.vlan)
2333 dev_put(params.vlan);
2334 return err;
2335 }
2336
2337 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2338 {
2339 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2340 struct net_device *dev = info->user_ptr[1];
2341 u8 *mac_addr = NULL;
2342
2343 if (info->attrs[NL80211_ATTR_MAC])
2344 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2345
2346 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2347 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2348 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2349 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2350 return -EINVAL;
2351
2352 if (!rdev->ops->del_station)
2353 return -EOPNOTSUPP;
2354
2355 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2356 }
2357
2358 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2359 int flags, struct net_device *dev,
2360 u8 *dst, u8 *next_hop,
2361 struct mpath_info *pinfo)
2362 {
2363 void *hdr;
2364 struct nlattr *pinfoattr;
2365
2366 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2367 if (!hdr)
2368 return -1;
2369
2370 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2371 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2372 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2373
2374 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2375
2376 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2377 if (!pinfoattr)
2378 goto nla_put_failure;
2379 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2380 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2381 pinfo->frame_qlen);
2382 if (pinfo->filled & MPATH_INFO_SN)
2383 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2384 pinfo->sn);
2385 if (pinfo->filled & MPATH_INFO_METRIC)
2386 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2387 pinfo->metric);
2388 if (pinfo->filled & MPATH_INFO_EXPTIME)
2389 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2390 pinfo->exptime);
2391 if (pinfo->filled & MPATH_INFO_FLAGS)
2392 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2393 pinfo->flags);
2394 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2395 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2396 pinfo->discovery_timeout);
2397 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2398 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2399 pinfo->discovery_retries);
2400
2401 nla_nest_end(msg, pinfoattr);
2402
2403 return genlmsg_end(msg, hdr);
2404
2405 nla_put_failure:
2406 genlmsg_cancel(msg, hdr);
2407 return -EMSGSIZE;
2408 }
2409
2410 static int nl80211_dump_mpath(struct sk_buff *skb,
2411 struct netlink_callback *cb)
2412 {
2413 struct mpath_info pinfo;
2414 struct cfg80211_registered_device *dev;
2415 struct net_device *netdev;
2416 u8 dst[ETH_ALEN];
2417 u8 next_hop[ETH_ALEN];
2418 int path_idx = cb->args[1];
2419 int err;
2420
2421 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2422 if (err)
2423 return err;
2424
2425 if (!dev->ops->dump_mpath) {
2426 err = -EOPNOTSUPP;
2427 goto out_err;
2428 }
2429
2430 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2431 err = -EOPNOTSUPP;
2432 goto out_err;
2433 }
2434
2435 while (1) {
2436 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2437 dst, next_hop, &pinfo);
2438 if (err == -ENOENT)
2439 break;
2440 if (err)
2441 goto out_err;
2442
2443 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2444 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2445 netdev, dst, next_hop,
2446 &pinfo) < 0)
2447 goto out;
2448
2449 path_idx++;
2450 }
2451
2452
2453 out:
2454 cb->args[1] = path_idx;
2455 err = skb->len;
2456 out_err:
2457 nl80211_finish_netdev_dump(dev);
2458 return err;
2459 }
2460
2461 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2462 {
2463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2464 int err;
2465 struct net_device *dev = info->user_ptr[1];
2466 struct mpath_info pinfo;
2467 struct sk_buff *msg;
2468 u8 *dst = NULL;
2469 u8 next_hop[ETH_ALEN];
2470
2471 memset(&pinfo, 0, sizeof(pinfo));
2472
2473 if (!info->attrs[NL80211_ATTR_MAC])
2474 return -EINVAL;
2475
2476 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2477
2478 if (!rdev->ops->get_mpath)
2479 return -EOPNOTSUPP;
2480
2481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2482 return -EOPNOTSUPP;
2483
2484 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2485 if (err)
2486 return err;
2487
2488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2489 if (!msg)
2490 return -ENOMEM;
2491
2492 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2493 dev, dst, next_hop, &pinfo) < 0) {
2494 nlmsg_free(msg);
2495 return -ENOBUFS;
2496 }
2497
2498 return genlmsg_reply(msg, info);
2499 }
2500
2501 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2502 {
2503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2504 struct net_device *dev = info->user_ptr[1];
2505 u8 *dst = NULL;
2506 u8 *next_hop = NULL;
2507
2508 if (!info->attrs[NL80211_ATTR_MAC])
2509 return -EINVAL;
2510
2511 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2512 return -EINVAL;
2513
2514 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2515 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2516
2517 if (!rdev->ops->change_mpath)
2518 return -EOPNOTSUPP;
2519
2520 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2521 return -EOPNOTSUPP;
2522
2523 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2524 }
2525
2526 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2527 {
2528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2529 struct net_device *dev = info->user_ptr[1];
2530 u8 *dst = NULL;
2531 u8 *next_hop = NULL;
2532
2533 if (!info->attrs[NL80211_ATTR_MAC])
2534 return -EINVAL;
2535
2536 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2537 return -EINVAL;
2538
2539 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2540 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2541
2542 if (!rdev->ops->add_mpath)
2543 return -EOPNOTSUPP;
2544
2545 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2546 return -EOPNOTSUPP;
2547
2548 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2549 }
2550
2551 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2552 {
2553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2554 struct net_device *dev = info->user_ptr[1];
2555 u8 *dst = NULL;
2556
2557 if (info->attrs[NL80211_ATTR_MAC])
2558 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2559
2560 if (!rdev->ops->del_mpath)
2561 return -EOPNOTSUPP;
2562
2563 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2564 }
2565
2566 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2567 {
2568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2569 struct net_device *dev = info->user_ptr[1];
2570 struct bss_parameters params;
2571
2572 memset(&params, 0, sizeof(params));
2573 /* default to not changing parameters */
2574 params.use_cts_prot = -1;
2575 params.use_short_preamble = -1;
2576 params.use_short_slot_time = -1;
2577 params.ap_isolate = -1;
2578 params.ht_opmode = -1;
2579
2580 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2581 params.use_cts_prot =
2582 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2583 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2584 params.use_short_preamble =
2585 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2586 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2587 params.use_short_slot_time =
2588 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2589 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2590 params.basic_rates =
2591 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2592 params.basic_rates_len =
2593 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2594 }
2595 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2596 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2597 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2598 params.ht_opmode =
2599 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2600
2601 if (!rdev->ops->change_bss)
2602 return -EOPNOTSUPP;
2603
2604 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2605 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2606 return -EOPNOTSUPP;
2607
2608 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2609 }
2610
2611 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2612 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2613 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2614 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2615 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2616 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2617 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2618 };
2619
2620 static int parse_reg_rule(struct nlattr *tb[],
2621 struct ieee80211_reg_rule *reg_rule)
2622 {
2623 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2624 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2625
2626 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2627 return -EINVAL;
2628 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2629 return -EINVAL;
2630 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2631 return -EINVAL;
2632 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2633 return -EINVAL;
2634 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2635 return -EINVAL;
2636
2637 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2638
2639 freq_range->start_freq_khz =
2640 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2641 freq_range->end_freq_khz =
2642 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2643 freq_range->max_bandwidth_khz =
2644 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2645
2646 power_rule->max_eirp =
2647 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2648
2649 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2650 power_rule->max_antenna_gain =
2651 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2652
2653 return 0;
2654 }
2655
2656 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2657 {
2658 int r;
2659 char *data = NULL;
2660
2661 /*
2662 * You should only get this when cfg80211 hasn't yet initialized
2663 * completely when built-in to the kernel right between the time
2664 * window between nl80211_init() and regulatory_init(), if that is
2665 * even possible.
2666 */
2667 mutex_lock(&cfg80211_mutex);
2668 if (unlikely(!cfg80211_regdomain)) {
2669 mutex_unlock(&cfg80211_mutex);
2670 return -EINPROGRESS;
2671 }
2672 mutex_unlock(&cfg80211_mutex);
2673
2674 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2675 return -EINVAL;
2676
2677 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2678
2679 r = regulatory_hint_user(data);
2680
2681 return r;
2682 }
2683
2684 static int nl80211_get_mesh_config(struct sk_buff *skb,
2685 struct genl_info *info)
2686 {
2687 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2688 struct net_device *dev = info->user_ptr[1];
2689 struct wireless_dev *wdev = dev->ieee80211_ptr;
2690 struct mesh_config cur_params;
2691 int err = 0;
2692 void *hdr;
2693 struct nlattr *pinfoattr;
2694 struct sk_buff *msg;
2695
2696 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2697 return -EOPNOTSUPP;
2698
2699 if (!rdev->ops->get_mesh_config)
2700 return -EOPNOTSUPP;
2701
2702 wdev_lock(wdev);
2703 /* If not connected, get default parameters */
2704 if (!wdev->mesh_id_len)
2705 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2706 else
2707 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2708 &cur_params);
2709 wdev_unlock(wdev);
2710
2711 if (err)
2712 return err;
2713
2714 /* Draw up a netlink message to send back */
2715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2716 if (!msg)
2717 return -ENOMEM;
2718 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2719 NL80211_CMD_GET_MESH_CONFIG);
2720 if (!hdr)
2721 goto nla_put_failure;
2722 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2723 if (!pinfoattr)
2724 goto nla_put_failure;
2725 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2726 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2727 cur_params.dot11MeshRetryTimeout);
2728 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2729 cur_params.dot11MeshConfirmTimeout);
2730 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2731 cur_params.dot11MeshHoldingTimeout);
2732 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2733 cur_params.dot11MeshMaxPeerLinks);
2734 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2735 cur_params.dot11MeshMaxRetries);
2736 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2737 cur_params.dot11MeshTTL);
2738 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2739 cur_params.element_ttl);
2740 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2741 cur_params.auto_open_plinks);
2742 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2743 cur_params.dot11MeshHWMPmaxPREQretries);
2744 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2745 cur_params.path_refresh_time);
2746 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2747 cur_params.min_discovery_timeout);
2748 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2749 cur_params.dot11MeshHWMPactivePathTimeout);
2750 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2751 cur_params.dot11MeshHWMPpreqMinInterval);
2752 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2753 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2754 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2755 cur_params.dot11MeshHWMPRootMode);
2756 nla_nest_end(msg, pinfoattr);
2757 genlmsg_end(msg, hdr);
2758 return genlmsg_reply(msg, info);
2759
2760 nla_put_failure:
2761 genlmsg_cancel(msg, hdr);
2762 nlmsg_free(msg);
2763 return -ENOBUFS;
2764 }
2765
2766 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2767 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2768 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2769 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2770 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2771 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2772 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2773 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2774 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2775
2776 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2777 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2778 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2779 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2780 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2781 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2782 };
2783
2784 static const struct nla_policy
2785 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2786 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2787 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2788 [NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE] = { .type = NLA_BINARY,
2789 .len = IEEE80211_MAX_DATA_LEN },
2790 };
2791
2792 static int nl80211_parse_mesh_config(struct genl_info *info,
2793 struct mesh_config *cfg,
2794 u32 *mask_out)
2795 {
2796 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2797 u32 mask = 0;
2798
2799 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2800 do {\
2801 if (table[attr_num]) {\
2802 cfg->param = nla_fn(table[attr_num]); \
2803 mask |= (1 << (attr_num - 1)); \
2804 } \
2805 } while (0);\
2806
2807
2808 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2809 return -EINVAL;
2810 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2811 info->attrs[NL80211_ATTR_MESH_CONFIG],
2812 nl80211_meshconf_params_policy))
2813 return -EINVAL;
2814
2815 /* This makes sure that there aren't more than 32 mesh config
2816 * parameters (otherwise our bitfield scheme would not work.) */
2817 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2818
2819 /* Fill in the params struct */
2820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2821 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2822 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2823 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2824 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2825 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2827 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2828 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2829 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2831 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2832 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
2833 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
2834 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2835 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2837 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2838 nla_get_u8);
2839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2840 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2841 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2842 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2843 nla_get_u16);
2844 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2845 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2846 nla_get_u32);
2847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2848 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2849 nla_get_u16);
2850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2851 dot11MeshHWMPnetDiameterTraversalTime,
2852 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2853 nla_get_u16);
2854 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2855 dot11MeshHWMPRootMode, mask,
2856 NL80211_MESHCONF_HWMP_ROOTMODE,
2857 nla_get_u8);
2858 if (mask_out)
2859 *mask_out = mask;
2860
2861 return 0;
2862
2863 #undef FILL_IN_MESH_PARAM_IF_SET
2864 }
2865
2866 static int nl80211_parse_mesh_setup(struct genl_info *info,
2867 struct mesh_setup *setup)
2868 {
2869 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
2870
2871 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
2872 return -EINVAL;
2873 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
2874 info->attrs[NL80211_ATTR_MESH_SETUP],
2875 nl80211_mesh_setup_params_policy))
2876 return -EINVAL;
2877
2878 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
2879 setup->path_sel_proto =
2880 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
2881 IEEE80211_PATH_PROTOCOL_VENDOR :
2882 IEEE80211_PATH_PROTOCOL_HWMP;
2883
2884 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
2885 setup->path_metric =
2886 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
2887 IEEE80211_PATH_METRIC_VENDOR :
2888 IEEE80211_PATH_METRIC_AIRTIME;
2889
2890 if (tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE]) {
2891 struct nlattr *ieattr =
2892 tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE];
2893 if (!is_valid_ie_attr(ieattr))
2894 return -EINVAL;
2895 setup->vendor_ie = nla_data(ieattr);
2896 setup->vendor_ie_len = nla_len(ieattr);
2897 }
2898
2899 return 0;
2900 }
2901
2902 static int nl80211_update_mesh_config(struct sk_buff *skb,
2903 struct genl_info *info)
2904 {
2905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2906 struct net_device *dev = info->user_ptr[1];
2907 struct wireless_dev *wdev = dev->ieee80211_ptr;
2908 struct mesh_config cfg;
2909 u32 mask;
2910 int err;
2911
2912 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2913 return -EOPNOTSUPP;
2914
2915 if (!rdev->ops->update_mesh_config)
2916 return -EOPNOTSUPP;
2917
2918 err = nl80211_parse_mesh_config(info, &cfg, &mask);
2919 if (err)
2920 return err;
2921
2922 wdev_lock(wdev);
2923 if (!wdev->mesh_id_len)
2924 err = -ENOLINK;
2925
2926 if (!err)
2927 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
2928 mask, &cfg);
2929
2930 wdev_unlock(wdev);
2931
2932 return err;
2933 }
2934
2935 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2936 {
2937 struct sk_buff *msg;
2938 void *hdr = NULL;
2939 struct nlattr *nl_reg_rules;
2940 unsigned int i;
2941 int err = -EINVAL;
2942
2943 mutex_lock(&cfg80211_mutex);
2944
2945 if (!cfg80211_regdomain)
2946 goto out;
2947
2948 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2949 if (!msg) {
2950 err = -ENOBUFS;
2951 goto out;
2952 }
2953
2954 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2955 NL80211_CMD_GET_REG);
2956 if (!hdr)
2957 goto nla_put_failure;
2958
2959 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2960 cfg80211_regdomain->alpha2);
2961
2962 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2963 if (!nl_reg_rules)
2964 goto nla_put_failure;
2965
2966 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2967 struct nlattr *nl_reg_rule;
2968 const struct ieee80211_reg_rule *reg_rule;
2969 const struct ieee80211_freq_range *freq_range;
2970 const struct ieee80211_power_rule *power_rule;
2971
2972 reg_rule = &cfg80211_regdomain->reg_rules[i];
2973 freq_range = &reg_rule->freq_range;
2974 power_rule = &reg_rule->power_rule;
2975
2976 nl_reg_rule = nla_nest_start(msg, i);
2977 if (!nl_reg_rule)
2978 goto nla_put_failure;
2979
2980 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2981 reg_rule->flags);
2982 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2983 freq_range->start_freq_khz);
2984 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2985 freq_range->end_freq_khz);
2986 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2987 freq_range->max_bandwidth_khz);
2988 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2989 power_rule->max_antenna_gain);
2990 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2991 power_rule->max_eirp);
2992
2993 nla_nest_end(msg, nl_reg_rule);
2994 }
2995
2996 nla_nest_end(msg, nl_reg_rules);
2997
2998 genlmsg_end(msg, hdr);
2999 err = genlmsg_reply(msg, info);
3000 goto out;
3001
3002 nla_put_failure:
3003 genlmsg_cancel(msg, hdr);
3004 nlmsg_free(msg);
3005 err = -EMSGSIZE;
3006 out:
3007 mutex_unlock(&cfg80211_mutex);
3008 return err;
3009 }
3010
3011 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3012 {
3013 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3014 struct nlattr *nl_reg_rule;
3015 char *alpha2 = NULL;
3016 int rem_reg_rules = 0, r = 0;
3017 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3018 struct ieee80211_regdomain *rd = NULL;
3019
3020 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3021 return -EINVAL;
3022
3023 if (!info->attrs[NL80211_ATTR_REG_RULES])
3024 return -EINVAL;
3025
3026 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3027
3028 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3029 rem_reg_rules) {
3030 num_rules++;
3031 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3032 return -EINVAL;
3033 }
3034
3035 mutex_lock(&cfg80211_mutex);
3036
3037 if (!reg_is_valid_request(alpha2)) {
3038 r = -EINVAL;
3039 goto bad_reg;
3040 }
3041
3042 size_of_regd = sizeof(struct ieee80211_regdomain) +
3043 (num_rules * sizeof(struct ieee80211_reg_rule));
3044
3045 rd = kzalloc(size_of_regd, GFP_KERNEL);
3046 if (!rd) {
3047 r = -ENOMEM;
3048 goto bad_reg;
3049 }
3050
3051 rd->n_reg_rules = num_rules;
3052 rd->alpha2[0] = alpha2[0];
3053 rd->alpha2[1] = alpha2[1];
3054
3055 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3056 rem_reg_rules) {
3057 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3058 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3059 reg_rule_policy);
3060 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3061 if (r)
3062 goto bad_reg;
3063
3064 rule_idx++;
3065
3066 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3067 r = -EINVAL;
3068 goto bad_reg;
3069 }
3070 }
3071
3072 BUG_ON(rule_idx != num_rules);
3073
3074 r = set_regdom(rd);
3075
3076 mutex_unlock(&cfg80211_mutex);
3077
3078 return r;
3079
3080 bad_reg:
3081 mutex_unlock(&cfg80211_mutex);
3082 kfree(rd);
3083 return r;
3084 }
3085
3086 static int validate_scan_freqs(struct nlattr *freqs)
3087 {
3088 struct nlattr *attr1, *attr2;
3089 int n_channels = 0, tmp1, tmp2;
3090
3091 nla_for_each_nested(attr1, freqs, tmp1) {
3092 n_channels++;
3093 /*
3094 * Some hardware has a limited channel list for
3095 * scanning, and it is pretty much nonsensical
3096 * to scan for a channel twice, so disallow that
3097 * and don't require drivers to check that the
3098 * channel list they get isn't longer than what
3099 * they can scan, as long as they can scan all
3100 * the channels they registered at once.
3101 */
3102 nla_for_each_nested(attr2, freqs, tmp2)
3103 if (attr1 != attr2 &&
3104 nla_get_u32(attr1) == nla_get_u32(attr2))
3105 return 0;
3106 }
3107
3108 return n_channels;
3109 }
3110
3111 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3112 {
3113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3114 struct net_device *dev = info->user_ptr[1];
3115 struct cfg80211_scan_request *request;
3116 struct cfg80211_ssid *ssid;
3117 struct ieee80211_channel *channel;
3118 struct nlattr *attr;
3119 struct wiphy *wiphy;
3120 int err, tmp, n_ssids = 0, n_channels, i;
3121 enum ieee80211_band band;
3122 size_t ie_len;
3123
3124 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3125 return -EINVAL;
3126
3127 wiphy = &rdev->wiphy;
3128
3129 if (!rdev->ops->scan)
3130 return -EOPNOTSUPP;
3131
3132 if (rdev->scan_req)
3133 return -EBUSY;
3134
3135 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3136 n_channels = validate_scan_freqs(
3137 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3138 if (!n_channels)
3139 return -EINVAL;
3140 } else {
3141 n_channels = 0;
3142
3143 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3144 if (wiphy->bands[band])
3145 n_channels += wiphy->bands[band]->n_channels;
3146 }
3147
3148 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3149 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3150 n_ssids++;
3151
3152 if (n_ssids > wiphy->max_scan_ssids)
3153 return -EINVAL;
3154
3155 if (info->attrs[NL80211_ATTR_IE])
3156 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3157 else
3158 ie_len = 0;
3159
3160 if (ie_len > wiphy->max_scan_ie_len)
3161 return -EINVAL;
3162
3163 request = kzalloc(sizeof(*request)
3164 + sizeof(*ssid) * n_ssids
3165 + sizeof(channel) * n_channels
3166 + ie_len, GFP_KERNEL);
3167 if (!request)
3168 return -ENOMEM;
3169
3170 if (n_ssids)
3171 request->ssids = (void *)&request->channels[n_channels];
3172 request->n_ssids = n_ssids;
3173 if (ie_len) {
3174 if (request->ssids)
3175 request->ie = (void *)(request->ssids + n_ssids);
3176 else
3177 request->ie = (void *)(request->channels + n_channels);
3178 }
3179
3180 i = 0;
3181 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3182 /* user specified, bail out if channel not found */
3183 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3184 struct ieee80211_channel *chan;
3185
3186 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3187
3188 if (!chan) {
3189 err = -EINVAL;
3190 goto out_free;
3191 }
3192
3193 /* ignore disabled channels */
3194 if (chan->flags & IEEE80211_CHAN_DISABLED)
3195 continue;
3196
3197 request->channels[i] = chan;
3198 i++;
3199 }
3200 } else {
3201 /* all channels */
3202 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3203 int j;
3204 if (!wiphy->bands[band])
3205 continue;
3206 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3207 struct ieee80211_channel *chan;
3208
3209 chan = &wiphy->bands[band]->channels[j];
3210
3211 if (chan->flags & IEEE80211_CHAN_DISABLED)
3212 continue;
3213
3214 request->channels[i] = chan;
3215 i++;
3216 }
3217 }
3218 }
3219
3220 if (!i) {
3221 err = -EINVAL;
3222 goto out_free;
3223 }
3224
3225 request->n_channels = i;
3226
3227 i = 0;
3228 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3229 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3230 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3231 err = -EINVAL;
3232 goto out_free;
3233 }
3234 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3235 request->ssids[i].ssid_len = nla_len(attr);
3236 i++;
3237 }
3238 }
3239
3240 if (info->attrs[NL80211_ATTR_IE]) {
3241 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3242 memcpy((void *)request->ie,
3243 nla_data(info->attrs[NL80211_ATTR_IE]),
3244 request->ie_len);
3245 }
3246
3247 request->dev = dev;
3248 request->wiphy = &rdev->wiphy;
3249
3250 rdev->scan_req = request;
3251 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3252
3253 if (!err) {
3254 nl80211_send_scan_start(rdev, dev);
3255 dev_hold(dev);
3256 } else {
3257 out_free:
3258 rdev->scan_req = NULL;
3259 kfree(request);
3260 }
3261
3262 return err;
3263 }
3264
3265 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3266 struct cfg80211_registered_device *rdev,
3267 struct wireless_dev *wdev,
3268 struct cfg80211_internal_bss *intbss)
3269 {
3270 struct cfg80211_bss *res = &intbss->pub;
3271 void *hdr;
3272 struct nlattr *bss;
3273 int i;
3274
3275 ASSERT_WDEV_LOCK(wdev);
3276
3277 hdr = nl80211hdr_put(msg, pid, seq, flags,
3278 NL80211_CMD_NEW_SCAN_RESULTS);
3279 if (!hdr)
3280 return -1;
3281
3282 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3283 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3284
3285 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3286 if (!bss)
3287 goto nla_put_failure;
3288 if (!is_zero_ether_addr(res->bssid))
3289 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3290 if (res->information_elements && res->len_information_elements)
3291 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3292 res->len_information_elements,
3293 res->information_elements);
3294 if (res->beacon_ies && res->len_beacon_ies &&
3295 res->beacon_ies != res->information_elements)
3296 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3297 res->len_beacon_ies, res->beacon_ies);
3298 if (res->tsf)
3299 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3300 if (res->beacon_interval)
3301 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3302 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3303 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3304 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3305 jiffies_to_msecs(jiffies - intbss->ts));
3306
3307 switch (rdev->wiphy.signal_type) {
3308 case CFG80211_SIGNAL_TYPE_MBM:
3309 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3310 break;
3311 case CFG80211_SIGNAL_TYPE_UNSPEC:
3312 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3313 break;
3314 default:
3315 break;
3316 }
3317
3318 switch (wdev->iftype) {
3319 case NL80211_IFTYPE_P2P_CLIENT:
3320 case NL80211_IFTYPE_STATION:
3321 if (intbss == wdev->current_bss)
3322 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3323 NL80211_BSS_STATUS_ASSOCIATED);
3324 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3325 if (intbss != wdev->auth_bsses[i])
3326 continue;
3327 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3328 NL80211_BSS_STATUS_AUTHENTICATED);
3329 break;
3330 }
3331 break;
3332 case NL80211_IFTYPE_ADHOC:
3333 if (intbss == wdev->current_bss)
3334 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3335 NL80211_BSS_STATUS_IBSS_JOINED);
3336 break;
3337 default:
3338 break;
3339 }
3340
3341 nla_nest_end(msg, bss);
3342
3343 return genlmsg_end(msg, hdr);
3344
3345 nla_put_failure:
3346 genlmsg_cancel(msg, hdr);
3347 return -EMSGSIZE;
3348 }
3349
3350 static int nl80211_dump_scan(struct sk_buff *skb,
3351 struct netlink_callback *cb)
3352 {
3353 struct cfg80211_registered_device *rdev;
3354 struct net_device *dev;
3355 struct cfg80211_internal_bss *scan;
3356 struct wireless_dev *wdev;
3357 int start = cb->args[1], idx = 0;
3358 int err;
3359
3360 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3361 if (err)
3362 return err;
3363
3364 wdev = dev->ieee80211_ptr;
3365
3366 wdev_lock(wdev);
3367 spin_lock_bh(&rdev->bss_lock);
3368 cfg80211_bss_expire(rdev);
3369
3370 list_for_each_entry(scan, &rdev->bss_list, list) {
3371 if (++idx <= start)
3372 continue;
3373 if (nl80211_send_bss(skb,
3374 NETLINK_CB(cb->skb).pid,
3375 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3376 rdev, wdev, scan) < 0) {
3377 idx--;
3378 break;
3379 }
3380 }
3381
3382 spin_unlock_bh(&rdev->bss_lock);
3383 wdev_unlock(wdev);
3384
3385 cb->args[1] = idx;
3386 nl80211_finish_netdev_dump(rdev);
3387
3388 return skb->len;
3389 }
3390
3391 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3392 int flags, struct net_device *dev,
3393 struct survey_info *survey)
3394 {
3395 void *hdr;
3396 struct nlattr *infoattr;
3397
3398 /* Survey without a channel doesn't make sense */
3399 if (!survey->channel)
3400 return -EINVAL;
3401
3402 hdr = nl80211hdr_put(msg, pid, seq, flags,
3403 NL80211_CMD_NEW_SURVEY_RESULTS);
3404 if (!hdr)
3405 return -ENOMEM;
3406
3407 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3408
3409 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3410 if (!infoattr)
3411 goto nla_put_failure;
3412
3413 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3414 survey->channel->center_freq);
3415 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3416 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3417 survey->noise);
3418 if (survey->filled & SURVEY_INFO_IN_USE)
3419 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3420 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3421 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3422 survey->channel_time);
3423 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3424 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3425 survey->channel_time_busy);
3426 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3427 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3428 survey->channel_time_ext_busy);
3429 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3430 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3431 survey->channel_time_rx);
3432 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3433 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3434 survey->channel_time_tx);
3435
3436 nla_nest_end(msg, infoattr);
3437
3438 return genlmsg_end(msg, hdr);
3439
3440 nla_put_failure:
3441 genlmsg_cancel(msg, hdr);
3442 return -EMSGSIZE;
3443 }
3444
3445 static int nl80211_dump_survey(struct sk_buff *skb,
3446 struct netlink_callback *cb)
3447 {
3448 struct survey_info survey;
3449 struct cfg80211_registered_device *dev;
3450 struct net_device *netdev;
3451 int survey_idx = cb->args[1];
3452 int res;
3453
3454 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3455 if (res)
3456 return res;
3457
3458 if (!dev->ops->dump_survey) {
3459 res = -EOPNOTSUPP;
3460 goto out_err;
3461 }
3462
3463 while (1) {
3464 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3465 &survey);
3466 if (res == -ENOENT)
3467 break;
3468 if (res)
3469 goto out_err;
3470
3471 if (nl80211_send_survey(skb,
3472 NETLINK_CB(cb->skb).pid,
3473 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3474 netdev,
3475 &survey) < 0)
3476 goto out;
3477 survey_idx++;
3478 }
3479
3480 out:
3481 cb->args[1] = survey_idx;
3482 res = skb->len;
3483 out_err:
3484 nl80211_finish_netdev_dump(dev);
3485 return res;
3486 }
3487
3488 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3489 {
3490 return auth_type <= NL80211_AUTHTYPE_MAX;
3491 }
3492
3493 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3494 {
3495 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3496 NL80211_WPA_VERSION_2));
3497 }
3498
3499 static bool nl80211_valid_akm_suite(u32 akm)
3500 {
3501 return akm == WLAN_AKM_SUITE_8021X ||
3502 akm == WLAN_AKM_SUITE_PSK;
3503 }
3504
3505 static bool nl80211_valid_cipher_suite(u32 cipher)
3506 {
3507 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3508 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3509 cipher == WLAN_CIPHER_SUITE_TKIP ||
3510 cipher == WLAN_CIPHER_SUITE_CCMP ||
3511 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3512 }
3513
3514
3515 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3516 {
3517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3518 struct net_device *dev = info->user_ptr[1];
3519 struct ieee80211_channel *chan;
3520 const u8 *bssid, *ssid, *ie = NULL;
3521 int err, ssid_len, ie_len = 0;
3522 enum nl80211_auth_type auth_type;
3523 struct key_parse key;
3524 bool local_state_change;
3525
3526 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3527 return -EINVAL;
3528
3529 if (!info->attrs[NL80211_ATTR_MAC])
3530 return -EINVAL;
3531
3532 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3533 return -EINVAL;
3534
3535 if (!info->attrs[NL80211_ATTR_SSID])
3536 return -EINVAL;
3537
3538 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3539 return -EINVAL;
3540
3541 err = nl80211_parse_key(info, &key);
3542 if (err)
3543 return err;
3544
3545 if (key.idx >= 0) {
3546 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3547 return -EINVAL;
3548 if (!key.p.key || !key.p.key_len)
3549 return -EINVAL;
3550 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3551 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3552 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3553 key.p.key_len != WLAN_KEY_LEN_WEP104))
3554 return -EINVAL;
3555 if (key.idx > 4)
3556 return -EINVAL;
3557 } else {
3558 key.p.key_len = 0;
3559 key.p.key = NULL;
3560 }
3561
3562 if (key.idx >= 0) {
3563 int i;
3564 bool ok = false;
3565 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3566 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3567 ok = true;
3568 break;
3569 }
3570 }
3571 if (!ok)
3572 return -EINVAL;
3573 }
3574
3575 if (!rdev->ops->auth)
3576 return -EOPNOTSUPP;
3577
3578 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3579 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3580 return -EOPNOTSUPP;
3581
3582 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3583 chan = ieee80211_get_channel(&rdev->wiphy,
3584 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3585 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3586 return -EINVAL;
3587
3588 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3589 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3590
3591 if (info->attrs[NL80211_ATTR_IE]) {
3592 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3593 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3594 }
3595
3596 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3597 if (!nl80211_valid_auth_type(auth_type))
3598 return -EINVAL;
3599
3600 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3601
3602 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3603 ssid, ssid_len, ie, ie_len,
3604 key.p.key, key.p.key_len, key.idx,
3605 local_state_change);
3606 }
3607
3608 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3609 struct genl_info *info,
3610 struct cfg80211_crypto_settings *settings,
3611 int cipher_limit)
3612 {
3613 memset(settings, 0, sizeof(*settings));
3614
3615 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3616
3617 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3618 u16 proto;
3619 proto = nla_get_u16(
3620 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3621 settings->control_port_ethertype = cpu_to_be16(proto);
3622 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3623 proto != ETH_P_PAE)
3624 return -EINVAL;
3625 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3626 settings->control_port_no_encrypt = true;
3627 } else
3628 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3629
3630 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3631 void *data;
3632 int len, i;
3633
3634 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3635 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3636 settings->n_ciphers_pairwise = len / sizeof(u32);
3637
3638 if (len % sizeof(u32))
3639 return -EINVAL;
3640
3641 if (settings->n_ciphers_pairwise > cipher_limit)
3642 return -EINVAL;
3643
3644 memcpy(settings->ciphers_pairwise, data, len);
3645
3646 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3647 if (!nl80211_valid_cipher_suite(
3648 settings->ciphers_pairwise[i]))
3649 return -EINVAL;
3650 }
3651
3652 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3653 settings->cipher_group =
3654 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3655 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3656 return -EINVAL;
3657 }
3658
3659 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3660 settings->wpa_versions =
3661 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3662 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3663 return -EINVAL;
3664 }
3665
3666 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3667 void *data;
3668 int len, i;
3669
3670 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3671 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3672 settings->n_akm_suites = len / sizeof(u32);
3673
3674 if (len % sizeof(u32))
3675 return -EINVAL;
3676
3677 memcpy(settings->akm_suites, data, len);
3678
3679 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3680 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3681 return -EINVAL;
3682 }
3683
3684 return 0;
3685 }
3686
3687 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3688 {
3689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3690 struct net_device *dev = info->user_ptr[1];
3691 struct cfg80211_crypto_settings crypto;
3692 struct ieee80211_channel *chan;
3693 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3694 int err, ssid_len, ie_len = 0;
3695 bool use_mfp = false;
3696
3697 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3698 return -EINVAL;
3699
3700 if (!info->attrs[NL80211_ATTR_MAC] ||
3701 !info->attrs[NL80211_ATTR_SSID] ||
3702 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3703 return -EINVAL;
3704
3705 if (!rdev->ops->assoc)
3706 return -EOPNOTSUPP;
3707
3708 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3709 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3710 return -EOPNOTSUPP;
3711
3712 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3713
3714 chan = ieee80211_get_channel(&rdev->wiphy,
3715 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3716 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3717 return -EINVAL;
3718
3719 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3720 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3721
3722 if (info->attrs[NL80211_ATTR_IE]) {
3723 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3724 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3725 }
3726
3727 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3728 enum nl80211_mfp mfp =
3729 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3730 if (mfp == NL80211_MFP_REQUIRED)
3731 use_mfp = true;
3732 else if (mfp != NL80211_MFP_NO)
3733 return -EINVAL;
3734 }
3735
3736 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3737 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3738
3739 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
3740 if (!err)
3741 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3742 ssid, ssid_len, ie, ie_len, use_mfp,
3743 &crypto);
3744
3745 return err;
3746 }
3747
3748 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3749 {
3750 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3751 struct net_device *dev = info->user_ptr[1];
3752 const u8 *ie = NULL, *bssid;
3753 int ie_len = 0;
3754 u16 reason_code;
3755 bool local_state_change;
3756
3757 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3758 return -EINVAL;
3759
3760 if (!info->attrs[NL80211_ATTR_MAC])
3761 return -EINVAL;
3762
3763 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3764 return -EINVAL;
3765
3766 if (!rdev->ops->deauth)
3767 return -EOPNOTSUPP;
3768
3769 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3770 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3771 return -EOPNOTSUPP;
3772
3773 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3774
3775 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3776 if (reason_code == 0) {
3777 /* Reason Code 0 is reserved */
3778 return -EINVAL;
3779 }
3780
3781 if (info->attrs[NL80211_ATTR_IE]) {
3782 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3783 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3784 }
3785
3786 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3787
3788 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3789 local_state_change);
3790 }
3791
3792 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3793 {
3794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3795 struct net_device *dev = info->user_ptr[1];
3796 const u8 *ie = NULL, *bssid;
3797 int ie_len = 0;
3798 u16 reason_code;
3799 bool local_state_change;
3800
3801 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3802 return -EINVAL;
3803
3804 if (!info->attrs[NL80211_ATTR_MAC])
3805 return -EINVAL;
3806
3807 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3808 return -EINVAL;
3809
3810 if (!rdev->ops->disassoc)
3811 return -EOPNOTSUPP;
3812
3813 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3814 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3815 return -EOPNOTSUPP;
3816
3817 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3818
3819 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3820 if (reason_code == 0) {
3821 /* Reason Code 0 is reserved */
3822 return -EINVAL;
3823 }
3824
3825 if (info->attrs[NL80211_ATTR_IE]) {
3826 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3827 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3828 }
3829
3830 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3831
3832 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3833 local_state_change);
3834 }
3835
3836 static bool
3837 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
3838 int mcast_rate[IEEE80211_NUM_BANDS],
3839 int rateval)
3840 {
3841 struct wiphy *wiphy = &rdev->wiphy;
3842 bool found = false;
3843 int band, i;
3844
3845 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3846 struct ieee80211_supported_band *sband;
3847
3848 sband = wiphy->bands[band];
3849 if (!sband)
3850 continue;
3851
3852 for (i = 0; i < sband->n_bitrates; i++) {
3853 if (sband->bitrates[i].bitrate == rateval) {
3854 mcast_rate[band] = i + 1;
3855 found = true;
3856 break;
3857 }
3858 }
3859 }
3860
3861 return found;
3862 }
3863
3864 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3865 {
3866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3867 struct net_device *dev = info->user_ptr[1];
3868 struct cfg80211_ibss_params ibss;
3869 struct wiphy *wiphy;
3870 struct cfg80211_cached_keys *connkeys = NULL;
3871 int err;
3872
3873 memset(&ibss, 0, sizeof(ibss));
3874
3875 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3876 return -EINVAL;
3877
3878 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3879 !info->attrs[NL80211_ATTR_SSID] ||
3880 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3881 return -EINVAL;
3882
3883 ibss.beacon_interval = 100;
3884
3885 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3886 ibss.beacon_interval =
3887 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3888 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3889 return -EINVAL;
3890 }
3891
3892 if (!rdev->ops->join_ibss)
3893 return -EOPNOTSUPP;
3894
3895 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3896 return -EOPNOTSUPP;
3897
3898 wiphy = &rdev->wiphy;
3899
3900 if (info->attrs[NL80211_ATTR_MAC])
3901 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3902 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3903 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3904
3905 if (info->attrs[NL80211_ATTR_IE]) {
3906 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3907 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3908 }
3909
3910 ibss.channel = ieee80211_get_channel(wiphy,
3911 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3912 if (!ibss.channel ||
3913 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3914 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3915 return -EINVAL;
3916
3917 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3918 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3919
3920 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3921 u8 *rates =
3922 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3923 int n_rates =
3924 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3925 struct ieee80211_supported_band *sband =
3926 wiphy->bands[ibss.channel->band];
3927 int i, j;
3928
3929 if (n_rates == 0)
3930 return -EINVAL;
3931
3932 for (i = 0; i < n_rates; i++) {
3933 int rate = (rates[i] & 0x7f) * 5;
3934 bool found = false;
3935
3936 for (j = 0; j < sband->n_bitrates; j++) {
3937 if (sband->bitrates[j].bitrate == rate) {
3938 found = true;
3939 ibss.basic_rates |= BIT(j);
3940 break;
3941 }
3942 }
3943 if (!found)
3944 return -EINVAL;
3945 }
3946 }
3947
3948 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
3949 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
3950 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
3951 return -EINVAL;
3952
3953 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3954 connkeys = nl80211_parse_connkeys(rdev,
3955 info->attrs[NL80211_ATTR_KEYS]);
3956 if (IS_ERR(connkeys))
3957 return PTR_ERR(connkeys);
3958 }
3959
3960 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3961 if (err)
3962 kfree(connkeys);
3963 return err;
3964 }
3965
3966 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3967 {
3968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3969 struct net_device *dev = info->user_ptr[1];
3970
3971 if (!rdev->ops->leave_ibss)
3972 return -EOPNOTSUPP;
3973
3974 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3975 return -EOPNOTSUPP;
3976
3977 return cfg80211_leave_ibss(rdev, dev, false);
3978 }
3979
3980 #ifdef CONFIG_NL80211_TESTMODE
3981 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3982 .name = "testmode",
3983 };
3984
3985 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3986 {
3987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988 int err;
3989
3990 if (!info->attrs[NL80211_ATTR_TESTDATA])
3991 return -EINVAL;
3992
3993 err = -EOPNOTSUPP;
3994 if (rdev->ops->testmode_cmd) {
3995 rdev->testmode_info = info;
3996 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3997 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3998 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3999 rdev->testmode_info = NULL;
4000 }
4001
4002 return err;
4003 }
4004
4005 static struct sk_buff *
4006 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4007 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4008 {
4009 struct sk_buff *skb;
4010 void *hdr;
4011 struct nlattr *data;
4012
4013 skb = nlmsg_new(approxlen + 100, gfp);
4014 if (!skb)
4015 return NULL;
4016
4017 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4018 if (!hdr) {
4019 kfree_skb(skb);
4020 return NULL;
4021 }
4022
4023 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4024 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4025
4026 ((void **)skb->cb)[0] = rdev;
4027 ((void **)skb->cb)[1] = hdr;
4028 ((void **)skb->cb)[2] = data;
4029
4030 return skb;
4031
4032 nla_put_failure:
4033 kfree_skb(skb);
4034 return NULL;
4035 }
4036
4037 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4038 int approxlen)
4039 {
4040 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4041
4042 if (WARN_ON(!rdev->testmode_info))
4043 return NULL;
4044
4045 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4046 rdev->testmode_info->snd_pid,
4047 rdev->testmode_info->snd_seq,
4048 GFP_KERNEL);
4049 }
4050 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4051
4052 int cfg80211_testmode_reply(struct sk_buff *skb)
4053 {
4054 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4055 void *hdr = ((void **)skb->cb)[1];
4056 struct nlattr *data = ((void **)skb->cb)[2];
4057
4058 if (WARN_ON(!rdev->testmode_info)) {
4059 kfree_skb(skb);
4060 return -EINVAL;
4061 }
4062
4063 nla_nest_end(skb, data);
4064 genlmsg_end(skb, hdr);
4065 return genlmsg_reply(skb, rdev->testmode_info);
4066 }
4067 EXPORT_SYMBOL(cfg80211_testmode_reply);
4068
4069 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4070 int approxlen, gfp_t gfp)
4071 {
4072 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4073
4074 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4075 }
4076 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4077
4078 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4079 {
4080 void *hdr = ((void **)skb->cb)[1];
4081 struct nlattr *data = ((void **)skb->cb)[2];
4082
4083 nla_nest_end(skb, data);
4084 genlmsg_end(skb, hdr);
4085 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4086 }
4087 EXPORT_SYMBOL(cfg80211_testmode_event);
4088 #endif
4089
4090 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4091 {
4092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4093 struct net_device *dev = info->user_ptr[1];
4094 struct cfg80211_connect_params connect;
4095 struct wiphy *wiphy;
4096 struct cfg80211_cached_keys *connkeys = NULL;
4097 int err;
4098
4099 memset(&connect, 0, sizeof(connect));
4100
4101 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4102 return -EINVAL;
4103
4104 if (!info->attrs[NL80211_ATTR_SSID] ||
4105 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4106 return -EINVAL;
4107
4108 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4109 connect.auth_type =
4110 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4111 if (!nl80211_valid_auth_type(connect.auth_type))
4112 return -EINVAL;
4113 } else
4114 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4115
4116 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4117
4118 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4119 NL80211_MAX_NR_CIPHER_SUITES);
4120 if (err)
4121 return err;
4122
4123 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4124 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4125 return -EOPNOTSUPP;
4126
4127 wiphy = &rdev->wiphy;
4128
4129 if (info->attrs[NL80211_ATTR_MAC])
4130 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4131 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4132 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4133
4134 if (info->attrs[NL80211_ATTR_IE]) {
4135 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4136 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4137 }
4138
4139 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4140 connect.channel =
4141 ieee80211_get_channel(wiphy,
4142 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4143 if (!connect.channel ||
4144 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4145 return -EINVAL;
4146 }
4147
4148 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4149 connkeys = nl80211_parse_connkeys(rdev,
4150 info->attrs[NL80211_ATTR_KEYS]);
4151 if (IS_ERR(connkeys))
4152 return PTR_ERR(connkeys);
4153 }
4154
4155 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4156 if (err)
4157 kfree(connkeys);
4158 return err;
4159 }
4160
4161 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4162 {
4163 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4164 struct net_device *dev = info->user_ptr[1];
4165 u16 reason;
4166
4167 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4168 reason = WLAN_REASON_DEAUTH_LEAVING;
4169 else
4170 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4171
4172 if (reason == 0)
4173 return -EINVAL;
4174
4175 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4176 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4177 return -EOPNOTSUPP;
4178
4179 return cfg80211_disconnect(rdev, dev, reason, true);
4180 }
4181
4182 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4183 {
4184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4185 struct net *net;
4186 int err;
4187 u32 pid;
4188
4189 if (!info->attrs[NL80211_ATTR_PID])
4190 return -EINVAL;
4191
4192 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4193
4194 net = get_net_ns_by_pid(pid);
4195 if (IS_ERR(net))
4196 return PTR_ERR(net);
4197
4198 err = 0;
4199
4200 /* check if anything to do */
4201 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4202 err = cfg80211_switch_netns(rdev, net);
4203
4204 put_net(net);
4205 return err;
4206 }
4207
4208 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4209 {
4210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4211 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4212 struct cfg80211_pmksa *pmksa) = NULL;
4213 struct net_device *dev = info->user_ptr[1];
4214 struct cfg80211_pmksa pmksa;
4215
4216 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4217
4218 if (!info->attrs[NL80211_ATTR_MAC])
4219 return -EINVAL;
4220
4221 if (!info->attrs[NL80211_ATTR_PMKID])
4222 return -EINVAL;
4223
4224 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4225 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4226
4227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4228 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4229 return -EOPNOTSUPP;
4230
4231 switch (info->genlhdr->cmd) {
4232 case NL80211_CMD_SET_PMKSA:
4233 rdev_ops = rdev->ops->set_pmksa;
4234 break;
4235 case NL80211_CMD_DEL_PMKSA:
4236 rdev_ops = rdev->ops->del_pmksa;
4237 break;
4238 default:
4239 WARN_ON(1);
4240 break;
4241 }
4242
4243 if (!rdev_ops)
4244 return -EOPNOTSUPP;
4245
4246 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4247 }
4248
4249 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4250 {
4251 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4252 struct net_device *dev = info->user_ptr[1];
4253
4254 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4255 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4256 return -EOPNOTSUPP;
4257
4258 if (!rdev->ops->flush_pmksa)
4259 return -EOPNOTSUPP;
4260
4261 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4262 }
4263
4264 static int nl80211_remain_on_channel(struct sk_buff *skb,
4265 struct genl_info *info)
4266 {
4267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4268 struct net_device *dev = info->user_ptr[1];
4269 struct ieee80211_channel *chan;
4270 struct sk_buff *msg;
4271 void *hdr;
4272 u64 cookie;
4273 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4274 u32 freq, duration;
4275 int err;
4276
4277 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4278 !info->attrs[NL80211_ATTR_DURATION])
4279 return -EINVAL;
4280
4281 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4282
4283 /*
4284 * We should be on that channel for at least one jiffie,
4285 * and more than 5 seconds seems excessive.
4286 */
4287 if (!duration || !msecs_to_jiffies(duration) ||
4288 duration > rdev->wiphy.max_remain_on_channel_duration)
4289 return -EINVAL;
4290
4291 if (!rdev->ops->remain_on_channel)
4292 return -EOPNOTSUPP;
4293
4294 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4295 channel_type = nla_get_u32(
4296 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4297 if (channel_type != NL80211_CHAN_NO_HT &&
4298 channel_type != NL80211_CHAN_HT20 &&
4299 channel_type != NL80211_CHAN_HT40PLUS &&
4300 channel_type != NL80211_CHAN_HT40MINUS)
4301 return -EINVAL;
4302 }
4303
4304 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4305 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4306 if (chan == NULL)
4307 return -EINVAL;
4308
4309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4310 if (!msg)
4311 return -ENOMEM;
4312
4313 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4314 NL80211_CMD_REMAIN_ON_CHANNEL);
4315
4316 if (IS_ERR(hdr)) {
4317 err = PTR_ERR(hdr);
4318 goto free_msg;
4319 }
4320
4321 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4322 channel_type, duration, &cookie);
4323
4324 if (err)
4325 goto free_msg;
4326
4327 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4328
4329 genlmsg_end(msg, hdr);
4330
4331 return genlmsg_reply(msg, info);
4332
4333 nla_put_failure:
4334 err = -ENOBUFS;
4335 free_msg:
4336 nlmsg_free(msg);
4337 return err;
4338 }
4339
4340 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4341 struct genl_info *info)
4342 {
4343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4344 struct net_device *dev = info->user_ptr[1];
4345 u64 cookie;
4346
4347 if (!info->attrs[NL80211_ATTR_COOKIE])
4348 return -EINVAL;
4349
4350 if (!rdev->ops->cancel_remain_on_channel)
4351 return -EOPNOTSUPP;
4352
4353 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4354
4355 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4356 }
4357
4358 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4359 u8 *rates, u8 rates_len)
4360 {
4361 u8 i;
4362 u32 mask = 0;
4363
4364 for (i = 0; i < rates_len; i++) {
4365 int rate = (rates[i] & 0x7f) * 5;
4366 int ridx;
4367 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4368 struct ieee80211_rate *srate =
4369 &sband->bitrates[ridx];
4370 if (rate == srate->bitrate) {
4371 mask |= 1 << ridx;
4372 break;
4373 }
4374 }
4375 if (ridx == sband->n_bitrates)
4376 return 0; /* rate not found */
4377 }
4378
4379 return mask;
4380 }
4381
4382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4383 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4384 .len = NL80211_MAX_SUPP_RATES },
4385 };
4386
4387 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4388 struct genl_info *info)
4389 {
4390 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4391 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4392 struct cfg80211_bitrate_mask mask;
4393 int rem, i;
4394 struct net_device *dev = info->user_ptr[1];
4395 struct nlattr *tx_rates;
4396 struct ieee80211_supported_band *sband;
4397
4398 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4399 return -EINVAL;
4400
4401 if (!rdev->ops->set_bitrate_mask)
4402 return -EOPNOTSUPP;
4403
4404 memset(&mask, 0, sizeof(mask));
4405 /* Default to all rates enabled */
4406 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4407 sband = rdev->wiphy.bands[i];
4408 mask.control[i].legacy =
4409 sband ? (1 << sband->n_bitrates) - 1 : 0;
4410 }
4411
4412 /*
4413 * The nested attribute uses enum nl80211_band as the index. This maps
4414 * directly to the enum ieee80211_band values used in cfg80211.
4415 */
4416 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4417 {
4418 enum ieee80211_band band = nla_type(tx_rates);
4419 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4420 return -EINVAL;
4421 sband = rdev->wiphy.bands[band];
4422 if (sband == NULL)
4423 return -EINVAL;
4424 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4425 nla_len(tx_rates), nl80211_txattr_policy);
4426 if (tb[NL80211_TXRATE_LEGACY]) {
4427 mask.control[band].legacy = rateset_to_mask(
4428 sband,
4429 nla_data(tb[NL80211_TXRATE_LEGACY]),
4430 nla_len(tb[NL80211_TXRATE_LEGACY]));
4431 if (mask.control[band].legacy == 0)
4432 return -EINVAL;
4433 }
4434 }
4435
4436 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4437 }
4438
4439 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4440 {
4441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4442 struct net_device *dev = info->user_ptr[1];
4443 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4444
4445 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4446 return -EINVAL;
4447
4448 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4449 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4450
4451 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4452 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4453 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4454 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4455 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4456 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4457 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4458 return -EOPNOTSUPP;
4459
4460 /* not much point in registering if we can't reply */
4461 if (!rdev->ops->mgmt_tx)
4462 return -EOPNOTSUPP;
4463
4464 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4465 frame_type,
4466 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4467 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4468 }
4469
4470 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4471 {
4472 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4473 struct net_device *dev = info->user_ptr[1];
4474 struct ieee80211_channel *chan;
4475 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4476 bool channel_type_valid = false;
4477 u32 freq;
4478 int err;
4479 void *hdr;
4480 u64 cookie;
4481 struct sk_buff *msg;
4482 unsigned int wait = 0;
4483 bool offchan;
4484
4485 if (!info->attrs[NL80211_ATTR_FRAME] ||
4486 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4487 return -EINVAL;
4488
4489 if (!rdev->ops->mgmt_tx)
4490 return -EOPNOTSUPP;
4491
4492 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4493 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4494 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4495 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4496 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4497 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4498 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4499 return -EOPNOTSUPP;
4500
4501 if (info->attrs[NL80211_ATTR_DURATION]) {
4502 if (!rdev->ops->mgmt_tx_cancel_wait)
4503 return -EINVAL;
4504 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4505 }
4506
4507 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4508 channel_type = nla_get_u32(
4509 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4510 if (channel_type != NL80211_CHAN_NO_HT &&
4511 channel_type != NL80211_CHAN_HT20 &&
4512 channel_type != NL80211_CHAN_HT40PLUS &&
4513 channel_type != NL80211_CHAN_HT40MINUS)
4514 return -EINVAL;
4515 channel_type_valid = true;
4516 }
4517
4518 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4519
4520 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4521 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4522 if (chan == NULL)
4523 return -EINVAL;
4524
4525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4526 if (!msg)
4527 return -ENOMEM;
4528
4529 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4530 NL80211_CMD_FRAME);
4531
4532 if (IS_ERR(hdr)) {
4533 err = PTR_ERR(hdr);
4534 goto free_msg;
4535 }
4536 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4537 channel_type_valid, wait,
4538 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4539 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4540 &cookie);
4541 if (err)
4542 goto free_msg;
4543
4544 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4545
4546 genlmsg_end(msg, hdr);
4547 return genlmsg_reply(msg, info);
4548
4549 nla_put_failure:
4550 err = -ENOBUFS;
4551 free_msg:
4552 nlmsg_free(msg);
4553 return err;
4554 }
4555
4556 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4557 {
4558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4559 struct net_device *dev = info->user_ptr[1];
4560 u64 cookie;
4561
4562 if (!info->attrs[NL80211_ATTR_COOKIE])
4563 return -EINVAL;
4564
4565 if (!rdev->ops->mgmt_tx_cancel_wait)
4566 return -EOPNOTSUPP;
4567
4568 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4569 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4570 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4572 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4573 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4574 return -EOPNOTSUPP;
4575
4576 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4577
4578 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4579 }
4580
4581 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4582 {
4583 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4584 struct wireless_dev *wdev;
4585 struct net_device *dev = info->user_ptr[1];
4586 u8 ps_state;
4587 bool state;
4588 int err;
4589
4590 if (!info->attrs[NL80211_ATTR_PS_STATE])
4591 return -EINVAL;
4592
4593 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4594
4595 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4596 return -EINVAL;
4597
4598 wdev = dev->ieee80211_ptr;
4599
4600 if (!rdev->ops->set_power_mgmt)
4601 return -EOPNOTSUPP;
4602
4603 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4604
4605 if (state == wdev->ps)
4606 return 0;
4607
4608 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4609 wdev->ps_timeout);
4610 if (!err)
4611 wdev->ps = state;
4612 return err;
4613 }
4614
4615 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4616 {
4617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4618 enum nl80211_ps_state ps_state;
4619 struct wireless_dev *wdev;
4620 struct net_device *dev = info->user_ptr[1];
4621 struct sk_buff *msg;
4622 void *hdr;
4623 int err;
4624
4625 wdev = dev->ieee80211_ptr;
4626
4627 if (!rdev->ops->set_power_mgmt)
4628 return -EOPNOTSUPP;
4629
4630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4631 if (!msg)
4632 return -ENOMEM;
4633
4634 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4635 NL80211_CMD_GET_POWER_SAVE);
4636 if (!hdr) {
4637 err = -ENOBUFS;
4638 goto free_msg;
4639 }
4640
4641 if (wdev->ps)
4642 ps_state = NL80211_PS_ENABLED;
4643 else
4644 ps_state = NL80211_PS_DISABLED;
4645
4646 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4647
4648 genlmsg_end(msg, hdr);
4649 return genlmsg_reply(msg, info);
4650
4651 nla_put_failure:
4652 err = -ENOBUFS;
4653 free_msg:
4654 nlmsg_free(msg);
4655 return err;
4656 }
4657
4658 static struct nla_policy
4659 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4660 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4661 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4662 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4663 };
4664
4665 static int nl80211_set_cqm_rssi(struct genl_info *info,
4666 s32 threshold, u32 hysteresis)
4667 {
4668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4669 struct wireless_dev *wdev;
4670 struct net_device *dev = info->user_ptr[1];
4671
4672 if (threshold > 0)
4673 return -EINVAL;
4674
4675 wdev = dev->ieee80211_ptr;
4676
4677 if (!rdev->ops->set_cqm_rssi_config)
4678 return -EOPNOTSUPP;
4679
4680 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4681 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4682 return -EOPNOTSUPP;
4683
4684 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4685 threshold, hysteresis);
4686 }
4687
4688 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4689 {
4690 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4691 struct nlattr *cqm;
4692 int err;
4693
4694 cqm = info->attrs[NL80211_ATTR_CQM];
4695 if (!cqm) {
4696 err = -EINVAL;
4697 goto out;
4698 }
4699
4700 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4701 nl80211_attr_cqm_policy);
4702 if (err)
4703 goto out;
4704
4705 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4706 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4707 s32 threshold;
4708 u32 hysteresis;
4709 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4710 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4711 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4712 } else
4713 err = -EINVAL;
4714
4715 out:
4716 return err;
4717 }
4718
4719 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
4720 {
4721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4722 struct net_device *dev = info->user_ptr[1];
4723 struct mesh_config cfg;
4724 struct mesh_setup setup;
4725 int err;
4726
4727 /* start with default */
4728 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
4729 memcpy(&setup, &default_mesh_setup, sizeof(setup));
4730
4731 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
4732 /* and parse parameters if given */
4733 err = nl80211_parse_mesh_config(info, &cfg, NULL);
4734 if (err)
4735 return err;
4736 }
4737
4738 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
4739 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
4740 return -EINVAL;
4741
4742 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
4743 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4744
4745 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
4746 /* parse additional setup parameters if given */
4747 err = nl80211_parse_mesh_setup(info, &setup);
4748 if (err)
4749 return err;
4750 }
4751
4752 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
4753 }
4754
4755 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
4756 {
4757 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4758 struct net_device *dev = info->user_ptr[1];
4759
4760 return cfg80211_leave_mesh(rdev, dev);
4761 }
4762
4763 #define NL80211_FLAG_NEED_WIPHY 0x01
4764 #define NL80211_FLAG_NEED_NETDEV 0x02
4765 #define NL80211_FLAG_NEED_RTNL 0x04
4766 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4767 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4768 NL80211_FLAG_CHECK_NETDEV_UP)
4769
4770 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4771 struct genl_info *info)
4772 {
4773 struct cfg80211_registered_device *rdev;
4774 struct net_device *dev;
4775 int err;
4776 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4777
4778 if (rtnl)
4779 rtnl_lock();
4780
4781 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4782 rdev = cfg80211_get_dev_from_info(info);
4783 if (IS_ERR(rdev)) {
4784 if (rtnl)
4785 rtnl_unlock();
4786 return PTR_ERR(rdev);
4787 }
4788 info->user_ptr[0] = rdev;
4789 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4790 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4791 if (err) {
4792 if (rtnl)
4793 rtnl_unlock();
4794 return err;
4795 }
4796 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4797 !netif_running(dev)) {
4798 cfg80211_unlock_rdev(rdev);
4799 dev_put(dev);
4800 if (rtnl)
4801 rtnl_unlock();
4802 return -ENETDOWN;
4803 }
4804 info->user_ptr[0] = rdev;
4805 info->user_ptr[1] = dev;
4806 }
4807
4808 return 0;
4809 }
4810
4811 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4812 struct genl_info *info)
4813 {
4814 if (info->user_ptr[0])
4815 cfg80211_unlock_rdev(info->user_ptr[0]);
4816 if (info->user_ptr[1])
4817 dev_put(info->user_ptr[1]);
4818 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4819 rtnl_unlock();
4820 }
4821
4822 static struct genl_ops nl80211_ops[] = {
4823 {
4824 .cmd = NL80211_CMD_GET_WIPHY,
4825 .doit = nl80211_get_wiphy,
4826 .dumpit = nl80211_dump_wiphy,
4827 .policy = nl80211_policy,
4828 /* can be retrieved by unprivileged users */
4829 .internal_flags = NL80211_FLAG_NEED_WIPHY,
4830 },
4831 {
4832 .cmd = NL80211_CMD_SET_WIPHY,
4833 .doit = nl80211_set_wiphy,
4834 .policy = nl80211_policy,
4835 .flags = GENL_ADMIN_PERM,
4836 .internal_flags = NL80211_FLAG_NEED_RTNL,
4837 },
4838 {
4839 .cmd = NL80211_CMD_GET_INTERFACE,
4840 .doit = nl80211_get_interface,
4841 .dumpit = nl80211_dump_interface,
4842 .policy = nl80211_policy,
4843 /* can be retrieved by unprivileged users */
4844 .internal_flags = NL80211_FLAG_NEED_NETDEV,
4845 },
4846 {
4847 .cmd = NL80211_CMD_SET_INTERFACE,
4848 .doit = nl80211_set_interface,
4849 .policy = nl80211_policy,
4850 .flags = GENL_ADMIN_PERM,
4851 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4852 NL80211_FLAG_NEED_RTNL,
4853 },
4854 {
4855 .cmd = NL80211_CMD_NEW_INTERFACE,
4856 .doit = nl80211_new_interface,
4857 .policy = nl80211_policy,
4858 .flags = GENL_ADMIN_PERM,
4859 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4860 NL80211_FLAG_NEED_RTNL,
4861 },
4862 {
4863 .cmd = NL80211_CMD_DEL_INTERFACE,
4864 .doit = nl80211_del_interface,
4865 .policy = nl80211_policy,
4866 .flags = GENL_ADMIN_PERM,
4867 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4868 NL80211_FLAG_NEED_RTNL,
4869 },
4870 {
4871 .cmd = NL80211_CMD_GET_KEY,
4872 .doit = nl80211_get_key,
4873 .policy = nl80211_policy,
4874 .flags = GENL_ADMIN_PERM,
4875 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4876 NL80211_FLAG_NEED_RTNL,
4877 },
4878 {
4879 .cmd = NL80211_CMD_SET_KEY,
4880 .doit = nl80211_set_key,
4881 .policy = nl80211_policy,
4882 .flags = GENL_ADMIN_PERM,
4883 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4884 NL80211_FLAG_NEED_RTNL,
4885 },
4886 {
4887 .cmd = NL80211_CMD_NEW_KEY,
4888 .doit = nl80211_new_key,
4889 .policy = nl80211_policy,
4890 .flags = GENL_ADMIN_PERM,
4891 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4892 NL80211_FLAG_NEED_RTNL,
4893 },
4894 {
4895 .cmd = NL80211_CMD_DEL_KEY,
4896 .doit = nl80211_del_key,
4897 .policy = nl80211_policy,
4898 .flags = GENL_ADMIN_PERM,
4899 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4900 NL80211_FLAG_NEED_RTNL,
4901 },
4902 {
4903 .cmd = NL80211_CMD_SET_BEACON,
4904 .policy = nl80211_policy,
4905 .flags = GENL_ADMIN_PERM,
4906 .doit = nl80211_addset_beacon,
4907 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4908 NL80211_FLAG_NEED_RTNL,
4909 },
4910 {
4911 .cmd = NL80211_CMD_NEW_BEACON,
4912 .policy = nl80211_policy,
4913 .flags = GENL_ADMIN_PERM,
4914 .doit = nl80211_addset_beacon,
4915 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4916 NL80211_FLAG_NEED_RTNL,
4917 },
4918 {
4919 .cmd = NL80211_CMD_DEL_BEACON,
4920 .policy = nl80211_policy,
4921 .flags = GENL_ADMIN_PERM,
4922 .doit = nl80211_del_beacon,
4923 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4924 NL80211_FLAG_NEED_RTNL,
4925 },
4926 {
4927 .cmd = NL80211_CMD_GET_STATION,
4928 .doit = nl80211_get_station,
4929 .dumpit = nl80211_dump_station,
4930 .policy = nl80211_policy,
4931 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4932 NL80211_FLAG_NEED_RTNL,
4933 },
4934 {
4935 .cmd = NL80211_CMD_SET_STATION,
4936 .doit = nl80211_set_station,
4937 .policy = nl80211_policy,
4938 .flags = GENL_ADMIN_PERM,
4939 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4940 NL80211_FLAG_NEED_RTNL,
4941 },
4942 {
4943 .cmd = NL80211_CMD_NEW_STATION,
4944 .doit = nl80211_new_station,
4945 .policy = nl80211_policy,
4946 .flags = GENL_ADMIN_PERM,
4947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4948 NL80211_FLAG_NEED_RTNL,
4949 },
4950 {
4951 .cmd = NL80211_CMD_DEL_STATION,
4952 .doit = nl80211_del_station,
4953 .policy = nl80211_policy,
4954 .flags = GENL_ADMIN_PERM,
4955 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4956 NL80211_FLAG_NEED_RTNL,
4957 },
4958 {
4959 .cmd = NL80211_CMD_GET_MPATH,
4960 .doit = nl80211_get_mpath,
4961 .dumpit = nl80211_dump_mpath,
4962 .policy = nl80211_policy,
4963 .flags = GENL_ADMIN_PERM,
4964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4965 NL80211_FLAG_NEED_RTNL,
4966 },
4967 {
4968 .cmd = NL80211_CMD_SET_MPATH,
4969 .doit = nl80211_set_mpath,
4970 .policy = nl80211_policy,
4971 .flags = GENL_ADMIN_PERM,
4972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4973 NL80211_FLAG_NEED_RTNL,
4974 },
4975 {
4976 .cmd = NL80211_CMD_NEW_MPATH,
4977 .doit = nl80211_new_mpath,
4978 .policy = nl80211_policy,
4979 .flags = GENL_ADMIN_PERM,
4980 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4981 NL80211_FLAG_NEED_RTNL,
4982 },
4983 {
4984 .cmd = NL80211_CMD_DEL_MPATH,
4985 .doit = nl80211_del_mpath,
4986 .policy = nl80211_policy,
4987 .flags = GENL_ADMIN_PERM,
4988 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4989 NL80211_FLAG_NEED_RTNL,
4990 },
4991 {
4992 .cmd = NL80211_CMD_SET_BSS,
4993 .doit = nl80211_set_bss,
4994 .policy = nl80211_policy,
4995 .flags = GENL_ADMIN_PERM,
4996 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4997 NL80211_FLAG_NEED_RTNL,
4998 },
4999 {
5000 .cmd = NL80211_CMD_GET_REG,
5001 .doit = nl80211_get_reg,
5002 .policy = nl80211_policy,
5003 /* can be retrieved by unprivileged users */
5004 },
5005 {
5006 .cmd = NL80211_CMD_SET_REG,
5007 .doit = nl80211_set_reg,
5008 .policy = nl80211_policy,
5009 .flags = GENL_ADMIN_PERM,
5010 },
5011 {
5012 .cmd = NL80211_CMD_REQ_SET_REG,
5013 .doit = nl80211_req_set_reg,
5014 .policy = nl80211_policy,
5015 .flags = GENL_ADMIN_PERM,
5016 },
5017 {
5018 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5019 .doit = nl80211_get_mesh_config,
5020 .policy = nl80211_policy,
5021 /* can be retrieved by unprivileged users */
5022 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5023 NL80211_FLAG_NEED_RTNL,
5024 },
5025 {
5026 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5027 .doit = nl80211_update_mesh_config,
5028 .policy = nl80211_policy,
5029 .flags = GENL_ADMIN_PERM,
5030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5031 NL80211_FLAG_NEED_RTNL,
5032 },
5033 {
5034 .cmd = NL80211_CMD_TRIGGER_SCAN,
5035 .doit = nl80211_trigger_scan,
5036 .policy = nl80211_policy,
5037 .flags = GENL_ADMIN_PERM,
5038 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5039 NL80211_FLAG_NEED_RTNL,
5040 },
5041 {
5042 .cmd = NL80211_CMD_GET_SCAN,
5043 .policy = nl80211_policy,
5044 .dumpit = nl80211_dump_scan,
5045 },
5046 {
5047 .cmd = NL80211_CMD_AUTHENTICATE,
5048 .doit = nl80211_authenticate,
5049 .policy = nl80211_policy,
5050 .flags = GENL_ADMIN_PERM,
5051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5052 NL80211_FLAG_NEED_RTNL,
5053 },
5054 {
5055 .cmd = NL80211_CMD_ASSOCIATE,
5056 .doit = nl80211_associate,
5057 .policy = nl80211_policy,
5058 .flags = GENL_ADMIN_PERM,
5059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5060 NL80211_FLAG_NEED_RTNL,
5061 },
5062 {
5063 .cmd = NL80211_CMD_DEAUTHENTICATE,
5064 .doit = nl80211_deauthenticate,
5065 .policy = nl80211_policy,
5066 .flags = GENL_ADMIN_PERM,
5067 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5068 NL80211_FLAG_NEED_RTNL,
5069 },
5070 {
5071 .cmd = NL80211_CMD_DISASSOCIATE,
5072 .doit = nl80211_disassociate,
5073 .policy = nl80211_policy,
5074 .flags = GENL_ADMIN_PERM,
5075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5076 NL80211_FLAG_NEED_RTNL,
5077 },
5078 {
5079 .cmd = NL80211_CMD_JOIN_IBSS,
5080 .doit = nl80211_join_ibss,
5081 .policy = nl80211_policy,
5082 .flags = GENL_ADMIN_PERM,
5083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5084 NL80211_FLAG_NEED_RTNL,
5085 },
5086 {
5087 .cmd = NL80211_CMD_LEAVE_IBSS,
5088 .doit = nl80211_leave_ibss,
5089 .policy = nl80211_policy,
5090 .flags = GENL_ADMIN_PERM,
5091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5092 NL80211_FLAG_NEED_RTNL,
5093 },
5094 #ifdef CONFIG_NL80211_TESTMODE
5095 {
5096 .cmd = NL80211_CMD_TESTMODE,
5097 .doit = nl80211_testmode_do,
5098 .policy = nl80211_policy,
5099 .flags = GENL_ADMIN_PERM,
5100 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5101 NL80211_FLAG_NEED_RTNL,
5102 },
5103 #endif
5104 {
5105 .cmd = NL80211_CMD_CONNECT,
5106 .doit = nl80211_connect,
5107 .policy = nl80211_policy,
5108 .flags = GENL_ADMIN_PERM,
5109 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5110 NL80211_FLAG_NEED_RTNL,
5111 },
5112 {
5113 .cmd = NL80211_CMD_DISCONNECT,
5114 .doit = nl80211_disconnect,
5115 .policy = nl80211_policy,
5116 .flags = GENL_ADMIN_PERM,
5117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5118 NL80211_FLAG_NEED_RTNL,
5119 },
5120 {
5121 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5122 .doit = nl80211_wiphy_netns,
5123 .policy = nl80211_policy,
5124 .flags = GENL_ADMIN_PERM,
5125 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5126 NL80211_FLAG_NEED_RTNL,
5127 },
5128 {
5129 .cmd = NL80211_CMD_GET_SURVEY,
5130 .policy = nl80211_policy,
5131 .dumpit = nl80211_dump_survey,
5132 },
5133 {
5134 .cmd = NL80211_CMD_SET_PMKSA,
5135 .doit = nl80211_setdel_pmksa,
5136 .policy = nl80211_policy,
5137 .flags = GENL_ADMIN_PERM,
5138 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5139 NL80211_FLAG_NEED_RTNL,
5140 },
5141 {
5142 .cmd = NL80211_CMD_DEL_PMKSA,
5143 .doit = nl80211_setdel_pmksa,
5144 .policy = nl80211_policy,
5145 .flags = GENL_ADMIN_PERM,
5146 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5147 NL80211_FLAG_NEED_RTNL,
5148 },
5149 {
5150 .cmd = NL80211_CMD_FLUSH_PMKSA,
5151 .doit = nl80211_flush_pmksa,
5152 .policy = nl80211_policy,
5153 .flags = GENL_ADMIN_PERM,
5154 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5155 NL80211_FLAG_NEED_RTNL,
5156 },
5157 {
5158 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5159 .doit = nl80211_remain_on_channel,
5160 .policy = nl80211_policy,
5161 .flags = GENL_ADMIN_PERM,
5162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5163 NL80211_FLAG_NEED_RTNL,
5164 },
5165 {
5166 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5167 .doit = nl80211_cancel_remain_on_channel,
5168 .policy = nl80211_policy,
5169 .flags = GENL_ADMIN_PERM,
5170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5171 NL80211_FLAG_NEED_RTNL,
5172 },
5173 {
5174 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5175 .doit = nl80211_set_tx_bitrate_mask,
5176 .policy = nl80211_policy,
5177 .flags = GENL_ADMIN_PERM,
5178 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5179 NL80211_FLAG_NEED_RTNL,
5180 },
5181 {
5182 .cmd = NL80211_CMD_REGISTER_FRAME,
5183 .doit = nl80211_register_mgmt,
5184 .policy = nl80211_policy,
5185 .flags = GENL_ADMIN_PERM,
5186 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5187 NL80211_FLAG_NEED_RTNL,
5188 },
5189 {
5190 .cmd = NL80211_CMD_FRAME,
5191 .doit = nl80211_tx_mgmt,
5192 .policy = nl80211_policy,
5193 .flags = GENL_ADMIN_PERM,
5194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5195 NL80211_FLAG_NEED_RTNL,
5196 },
5197 {
5198 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5199 .doit = nl80211_tx_mgmt_cancel_wait,
5200 .policy = nl80211_policy,
5201 .flags = GENL_ADMIN_PERM,
5202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5203 NL80211_FLAG_NEED_RTNL,
5204 },
5205 {
5206 .cmd = NL80211_CMD_SET_POWER_SAVE,
5207 .doit = nl80211_set_power_save,
5208 .policy = nl80211_policy,
5209 .flags = GENL_ADMIN_PERM,
5210 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5211 NL80211_FLAG_NEED_RTNL,
5212 },
5213 {
5214 .cmd = NL80211_CMD_GET_POWER_SAVE,
5215 .doit = nl80211_get_power_save,
5216 .policy = nl80211_policy,
5217 /* can be retrieved by unprivileged users */
5218 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5219 NL80211_FLAG_NEED_RTNL,
5220 },
5221 {
5222 .cmd = NL80211_CMD_SET_CQM,
5223 .doit = nl80211_set_cqm,
5224 .policy = nl80211_policy,
5225 .flags = GENL_ADMIN_PERM,
5226 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5227 NL80211_FLAG_NEED_RTNL,
5228 },
5229 {
5230 .cmd = NL80211_CMD_SET_CHANNEL,
5231 .doit = nl80211_set_channel,
5232 .policy = nl80211_policy,
5233 .flags = GENL_ADMIN_PERM,
5234 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5235 NL80211_FLAG_NEED_RTNL,
5236 },
5237 {
5238 .cmd = NL80211_CMD_SET_WDS_PEER,
5239 .doit = nl80211_set_wds_peer,
5240 .policy = nl80211_policy,
5241 .flags = GENL_ADMIN_PERM,
5242 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5243 NL80211_FLAG_NEED_RTNL,
5244 },
5245 {
5246 .cmd = NL80211_CMD_JOIN_MESH,
5247 .doit = nl80211_join_mesh,
5248 .policy = nl80211_policy,
5249 .flags = GENL_ADMIN_PERM,
5250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5251 NL80211_FLAG_NEED_RTNL,
5252 },
5253 {
5254 .cmd = NL80211_CMD_LEAVE_MESH,
5255 .doit = nl80211_leave_mesh,
5256 .policy = nl80211_policy,
5257 .flags = GENL_ADMIN_PERM,
5258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5259 NL80211_FLAG_NEED_RTNL,
5260 },
5261 };
5262
5263 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5264 .name = "mlme",
5265 };
5266
5267 /* multicast groups */
5268 static struct genl_multicast_group nl80211_config_mcgrp = {
5269 .name = "config",
5270 };
5271 static struct genl_multicast_group nl80211_scan_mcgrp = {
5272 .name = "scan",
5273 };
5274 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5275 .name = "regulatory",
5276 };
5277
5278 /* notification functions */
5279
5280 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5281 {
5282 struct sk_buff *msg;
5283
5284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5285 if (!msg)
5286 return;
5287
5288 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5289 nlmsg_free(msg);
5290 return;
5291 }
5292
5293 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5294 nl80211_config_mcgrp.id, GFP_KERNEL);
5295 }
5296
5297 static int nl80211_add_scan_req(struct sk_buff *msg,
5298 struct cfg80211_registered_device *rdev)
5299 {
5300 struct cfg80211_scan_request *req = rdev->scan_req;
5301 struct nlattr *nest;
5302 int i;
5303
5304 ASSERT_RDEV_LOCK(rdev);
5305
5306 if (WARN_ON(!req))
5307 return 0;
5308
5309 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5310 if (!nest)
5311 goto nla_put_failure;
5312 for (i = 0; i < req->n_ssids; i++)
5313 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5314 nla_nest_end(msg, nest);
5315
5316 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5317 if (!nest)
5318 goto nla_put_failure;
5319 for (i = 0; i < req->n_channels; i++)
5320 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5321 nla_nest_end(msg, nest);
5322
5323 if (req->ie)
5324 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5325
5326 return 0;
5327 nla_put_failure:
5328 return -ENOBUFS;
5329 }
5330
5331 static int nl80211_send_scan_msg(struct sk_buff *msg,
5332 struct cfg80211_registered_device *rdev,
5333 struct net_device *netdev,
5334 u32 pid, u32 seq, int flags,
5335 u32 cmd)
5336 {
5337 void *hdr;
5338
5339 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5340 if (!hdr)
5341 return -1;
5342
5343 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5344 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5345
5346 /* ignore errors and send incomplete event anyway */
5347 nl80211_add_scan_req(msg, rdev);
5348
5349 return genlmsg_end(msg, hdr);
5350
5351 nla_put_failure:
5352 genlmsg_cancel(msg, hdr);
5353 return -EMSGSIZE;
5354 }
5355
5356 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5357 struct net_device *netdev)
5358 {
5359 struct sk_buff *msg;
5360
5361 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5362 if (!msg)
5363 return;
5364
5365 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5366 NL80211_CMD_TRIGGER_SCAN) < 0) {
5367 nlmsg_free(msg);
5368 return;
5369 }
5370
5371 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5372 nl80211_scan_mcgrp.id, GFP_KERNEL);
5373 }
5374
5375 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5376 struct net_device *netdev)
5377 {
5378 struct sk_buff *msg;
5379
5380 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5381 if (!msg)
5382 return;
5383
5384 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5385 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5386 nlmsg_free(msg);
5387 return;
5388 }
5389
5390 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5391 nl80211_scan_mcgrp.id, GFP_KERNEL);
5392 }
5393
5394 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5395 struct net_device *netdev)
5396 {
5397 struct sk_buff *msg;
5398
5399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5400 if (!msg)
5401 return;
5402
5403 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5404 NL80211_CMD_SCAN_ABORTED) < 0) {
5405 nlmsg_free(msg);
5406 return;
5407 }
5408
5409 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5410 nl80211_scan_mcgrp.id, GFP_KERNEL);
5411 }
5412
5413 /*
5414 * This can happen on global regulatory changes or device specific settings
5415 * based on custom world regulatory domains.
5416 */
5417 void nl80211_send_reg_change_event(struct regulatory_request *request)
5418 {
5419 struct sk_buff *msg;
5420 void *hdr;
5421
5422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5423 if (!msg)
5424 return;
5425
5426 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5427 if (!hdr) {
5428 nlmsg_free(msg);
5429 return;
5430 }
5431
5432 /* Userspace can always count this one always being set */
5433 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5434
5435 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5436 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5437 NL80211_REGDOM_TYPE_WORLD);
5438 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5439 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5440 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5441 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5442 request->intersect)
5443 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5444 NL80211_REGDOM_TYPE_INTERSECTION);
5445 else {
5446 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5447 NL80211_REGDOM_TYPE_COUNTRY);
5448 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5449 }
5450
5451 if (wiphy_idx_valid(request->wiphy_idx))
5452 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5453
5454 if (genlmsg_end(msg, hdr) < 0) {
5455 nlmsg_free(msg);
5456 return;
5457 }
5458
5459 rcu_read_lock();
5460 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5461 GFP_ATOMIC);
5462 rcu_read_unlock();
5463
5464 return;
5465
5466 nla_put_failure:
5467 genlmsg_cancel(msg, hdr);
5468 nlmsg_free(msg);
5469 }
5470
5471 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5472 struct net_device *netdev,
5473 const u8 *buf, size_t len,
5474 enum nl80211_commands cmd, gfp_t gfp)
5475 {
5476 struct sk_buff *msg;
5477 void *hdr;
5478
5479 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5480 if (!msg)
5481 return;
5482
5483 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5484 if (!hdr) {
5485 nlmsg_free(msg);
5486 return;
5487 }
5488
5489 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5490 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5491 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5492
5493 if (genlmsg_end(msg, hdr) < 0) {
5494 nlmsg_free(msg);
5495 return;
5496 }
5497
5498 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5499 nl80211_mlme_mcgrp.id, gfp);
5500 return;
5501
5502 nla_put_failure:
5503 genlmsg_cancel(msg, hdr);
5504 nlmsg_free(msg);
5505 }
5506
5507 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5508 struct net_device *netdev, const u8 *buf,
5509 size_t len, gfp_t gfp)
5510 {
5511 nl80211_send_mlme_event(rdev, netdev, buf, len,
5512 NL80211_CMD_AUTHENTICATE, gfp);
5513 }
5514
5515 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5516 struct net_device *netdev, const u8 *buf,
5517 size_t len, gfp_t gfp)
5518 {
5519 nl80211_send_mlme_event(rdev, netdev, buf, len,
5520 NL80211_CMD_ASSOCIATE, gfp);
5521 }
5522
5523 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5524 struct net_device *netdev, const u8 *buf,
5525 size_t len, gfp_t gfp)
5526 {
5527 nl80211_send_mlme_event(rdev, netdev, buf, len,
5528 NL80211_CMD_DEAUTHENTICATE, gfp);
5529 }
5530
5531 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5532 struct net_device *netdev, const u8 *buf,
5533 size_t len, gfp_t gfp)
5534 {
5535 nl80211_send_mlme_event(rdev, netdev, buf, len,
5536 NL80211_CMD_DISASSOCIATE, gfp);
5537 }
5538
5539 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
5540 struct net_device *netdev, const u8 *buf,
5541 size_t len, gfp_t gfp)
5542 {
5543 nl80211_send_mlme_event(rdev, netdev, buf, len,
5544 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
5545 }
5546
5547 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
5548 struct net_device *netdev, const u8 *buf,
5549 size_t len, gfp_t gfp)
5550 {
5551 nl80211_send_mlme_event(rdev, netdev, buf, len,
5552 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
5553 }
5554
5555 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5556 struct net_device *netdev, int cmd,
5557 const u8 *addr, gfp_t gfp)
5558 {
5559 struct sk_buff *msg;
5560 void *hdr;
5561
5562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5563 if (!msg)
5564 return;
5565
5566 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5567 if (!hdr) {
5568 nlmsg_free(msg);
5569 return;
5570 }
5571
5572 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5573 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5574 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5575 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5576
5577 if (genlmsg_end(msg, hdr) < 0) {
5578 nlmsg_free(msg);
5579 return;
5580 }
5581
5582 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5583 nl80211_mlme_mcgrp.id, gfp);
5584 return;
5585
5586 nla_put_failure:
5587 genlmsg_cancel(msg, hdr);
5588 nlmsg_free(msg);
5589 }
5590
5591 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5592 struct net_device *netdev, const u8 *addr,
5593 gfp_t gfp)
5594 {
5595 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5596 addr, gfp);
5597 }
5598
5599 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5600 struct net_device *netdev, const u8 *addr,
5601 gfp_t gfp)
5602 {
5603 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5604 addr, gfp);
5605 }
5606
5607 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5608 struct net_device *netdev, const u8 *bssid,
5609 const u8 *req_ie, size_t req_ie_len,
5610 const u8 *resp_ie, size_t resp_ie_len,
5611 u16 status, gfp_t gfp)
5612 {
5613 struct sk_buff *msg;
5614 void *hdr;
5615
5616 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5617 if (!msg)
5618 return;
5619
5620 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5621 if (!hdr) {
5622 nlmsg_free(msg);
5623 return;
5624 }
5625
5626 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5627 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5628 if (bssid)
5629 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5630 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5631 if (req_ie)
5632 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5633 if (resp_ie)
5634 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5635
5636 if (genlmsg_end(msg, hdr) < 0) {
5637 nlmsg_free(msg);
5638 return;
5639 }
5640
5641 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5642 nl80211_mlme_mcgrp.id, gfp);
5643 return;
5644
5645 nla_put_failure:
5646 genlmsg_cancel(msg, hdr);
5647 nlmsg_free(msg);
5648
5649 }
5650
5651 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5652 struct net_device *netdev, const u8 *bssid,
5653 const u8 *req_ie, size_t req_ie_len,
5654 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5655 {
5656 struct sk_buff *msg;
5657 void *hdr;
5658
5659 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5660 if (!msg)
5661 return;
5662
5663 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5664 if (!hdr) {
5665 nlmsg_free(msg);
5666 return;
5667 }
5668
5669 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5670 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5671 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5672 if (req_ie)
5673 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5674 if (resp_ie)
5675 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5676
5677 if (genlmsg_end(msg, hdr) < 0) {
5678 nlmsg_free(msg);
5679 return;
5680 }
5681
5682 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5683 nl80211_mlme_mcgrp.id, gfp);
5684 return;
5685
5686 nla_put_failure:
5687 genlmsg_cancel(msg, hdr);
5688 nlmsg_free(msg);
5689
5690 }
5691
5692 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5693 struct net_device *netdev, u16 reason,
5694 const u8 *ie, size_t ie_len, bool from_ap)
5695 {
5696 struct sk_buff *msg;
5697 void *hdr;
5698
5699 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5700 if (!msg)
5701 return;
5702
5703 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5704 if (!hdr) {
5705 nlmsg_free(msg);
5706 return;
5707 }
5708
5709 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5710 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5711 if (from_ap && reason)
5712 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5713 if (from_ap)
5714 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5715 if (ie)
5716 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5717
5718 if (genlmsg_end(msg, hdr) < 0) {
5719 nlmsg_free(msg);
5720 return;
5721 }
5722
5723 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5724 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5725 return;
5726
5727 nla_put_failure:
5728 genlmsg_cancel(msg, hdr);
5729 nlmsg_free(msg);
5730
5731 }
5732
5733 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5734 struct net_device *netdev, const u8 *bssid,
5735 gfp_t gfp)
5736 {
5737 struct sk_buff *msg;
5738 void *hdr;
5739
5740 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5741 if (!msg)
5742 return;
5743
5744 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5745 if (!hdr) {
5746 nlmsg_free(msg);
5747 return;
5748 }
5749
5750 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5751 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5752 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5753
5754 if (genlmsg_end(msg, hdr) < 0) {
5755 nlmsg_free(msg);
5756 return;
5757 }
5758
5759 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5760 nl80211_mlme_mcgrp.id, gfp);
5761 return;
5762
5763 nla_put_failure:
5764 genlmsg_cancel(msg, hdr);
5765 nlmsg_free(msg);
5766 }
5767
5768 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5769 struct net_device *netdev, const u8 *addr,
5770 enum nl80211_key_type key_type, int key_id,
5771 const u8 *tsc, gfp_t gfp)
5772 {
5773 struct sk_buff *msg;
5774 void *hdr;
5775
5776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5777 if (!msg)
5778 return;
5779
5780 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5781 if (!hdr) {
5782 nlmsg_free(msg);
5783 return;
5784 }
5785
5786 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5787 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5788 if (addr)
5789 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5790 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5791 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5792 if (tsc)
5793 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5794
5795 if (genlmsg_end(msg, hdr) < 0) {
5796 nlmsg_free(msg);
5797 return;
5798 }
5799
5800 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5801 nl80211_mlme_mcgrp.id, gfp);
5802 return;
5803
5804 nla_put_failure:
5805 genlmsg_cancel(msg, hdr);
5806 nlmsg_free(msg);
5807 }
5808
5809 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5810 struct ieee80211_channel *channel_before,
5811 struct ieee80211_channel *channel_after)
5812 {
5813 struct sk_buff *msg;
5814 void *hdr;
5815 struct nlattr *nl_freq;
5816
5817 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5818 if (!msg)
5819 return;
5820
5821 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5822 if (!hdr) {
5823 nlmsg_free(msg);
5824 return;
5825 }
5826
5827 /*
5828 * Since we are applying the beacon hint to a wiphy we know its
5829 * wiphy_idx is valid
5830 */
5831 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5832
5833 /* Before */
5834 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5835 if (!nl_freq)
5836 goto nla_put_failure;
5837 if (nl80211_msg_put_channel(msg, channel_before))
5838 goto nla_put_failure;
5839 nla_nest_end(msg, nl_freq);
5840
5841 /* After */
5842 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5843 if (!nl_freq)
5844 goto nla_put_failure;
5845 if (nl80211_msg_put_channel(msg, channel_after))
5846 goto nla_put_failure;
5847 nla_nest_end(msg, nl_freq);
5848
5849 if (genlmsg_end(msg, hdr) < 0) {
5850 nlmsg_free(msg);
5851 return;
5852 }
5853
5854 rcu_read_lock();
5855 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5856 GFP_ATOMIC);
5857 rcu_read_unlock();
5858
5859 return;
5860
5861 nla_put_failure:
5862 genlmsg_cancel(msg, hdr);
5863 nlmsg_free(msg);
5864 }
5865
5866 static void nl80211_send_remain_on_chan_event(
5867 int cmd, struct cfg80211_registered_device *rdev,
5868 struct net_device *netdev, u64 cookie,
5869 struct ieee80211_channel *chan,
5870 enum nl80211_channel_type channel_type,
5871 unsigned int duration, gfp_t gfp)
5872 {
5873 struct sk_buff *msg;
5874 void *hdr;
5875
5876 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5877 if (!msg)
5878 return;
5879
5880 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5881 if (!hdr) {
5882 nlmsg_free(msg);
5883 return;
5884 }
5885
5886 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5887 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5888 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5889 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5890 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5891
5892 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5893 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5894
5895 if (genlmsg_end(msg, hdr) < 0) {
5896 nlmsg_free(msg);
5897 return;
5898 }
5899
5900 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5901 nl80211_mlme_mcgrp.id, gfp);
5902 return;
5903
5904 nla_put_failure:
5905 genlmsg_cancel(msg, hdr);
5906 nlmsg_free(msg);
5907 }
5908
5909 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5910 struct net_device *netdev, u64 cookie,
5911 struct ieee80211_channel *chan,
5912 enum nl80211_channel_type channel_type,
5913 unsigned int duration, gfp_t gfp)
5914 {
5915 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5916 rdev, netdev, cookie, chan,
5917 channel_type, duration, gfp);
5918 }
5919
5920 void nl80211_send_remain_on_channel_cancel(
5921 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5922 u64 cookie, struct ieee80211_channel *chan,
5923 enum nl80211_channel_type channel_type, gfp_t gfp)
5924 {
5925 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5926 rdev, netdev, cookie, chan,
5927 channel_type, 0, gfp);
5928 }
5929
5930 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5931 struct net_device *dev, const u8 *mac_addr,
5932 struct station_info *sinfo, gfp_t gfp)
5933 {
5934 struct sk_buff *msg;
5935
5936 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5937 if (!msg)
5938 return;
5939
5940 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5941 nlmsg_free(msg);
5942 return;
5943 }
5944
5945 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5946 nl80211_mlme_mcgrp.id, gfp);
5947 }
5948
5949 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5950 struct net_device *netdev, u32 nlpid,
5951 int freq, const u8 *buf, size_t len, gfp_t gfp)
5952 {
5953 struct sk_buff *msg;
5954 void *hdr;
5955 int err;
5956
5957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5958 if (!msg)
5959 return -ENOMEM;
5960
5961 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
5962 if (!hdr) {
5963 nlmsg_free(msg);
5964 return -ENOMEM;
5965 }
5966
5967 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5968 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5969 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5970 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5971
5972 err = genlmsg_end(msg, hdr);
5973 if (err < 0) {
5974 nlmsg_free(msg);
5975 return err;
5976 }
5977
5978 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5979 if (err < 0)
5980 return err;
5981 return 0;
5982
5983 nla_put_failure:
5984 genlmsg_cancel(msg, hdr);
5985 nlmsg_free(msg);
5986 return -ENOBUFS;
5987 }
5988
5989 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
5990 struct net_device *netdev, u64 cookie,
5991 const u8 *buf, size_t len, bool ack,
5992 gfp_t gfp)
5993 {
5994 struct sk_buff *msg;
5995 void *hdr;
5996
5997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5998 if (!msg)
5999 return;
6000
6001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6002 if (!hdr) {
6003 nlmsg_free(msg);
6004 return;
6005 }
6006
6007 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6008 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6009 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6010 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6011 if (ack)
6012 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6013
6014 if (genlmsg_end(msg, hdr) < 0) {
6015 nlmsg_free(msg);
6016 return;
6017 }
6018
6019 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6020 return;
6021
6022 nla_put_failure:
6023 genlmsg_cancel(msg, hdr);
6024 nlmsg_free(msg);
6025 }
6026
6027 void
6028 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6029 struct net_device *netdev,
6030 enum nl80211_cqm_rssi_threshold_event rssi_event,
6031 gfp_t gfp)
6032 {
6033 struct sk_buff *msg;
6034 struct nlattr *pinfoattr;
6035 void *hdr;
6036
6037 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6038 if (!msg)
6039 return;
6040
6041 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6042 if (!hdr) {
6043 nlmsg_free(msg);
6044 return;
6045 }
6046
6047 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6048 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6049
6050 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6051 if (!pinfoattr)
6052 goto nla_put_failure;
6053
6054 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6055 rssi_event);
6056
6057 nla_nest_end(msg, pinfoattr);
6058
6059 if (genlmsg_end(msg, hdr) < 0) {
6060 nlmsg_free(msg);
6061 return;
6062 }
6063
6064 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6065 nl80211_mlme_mcgrp.id, gfp);
6066 return;
6067
6068 nla_put_failure:
6069 genlmsg_cancel(msg, hdr);
6070 nlmsg_free(msg);
6071 }
6072
6073 void
6074 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6075 struct net_device *netdev, const u8 *peer,
6076 u32 num_packets, gfp_t gfp)
6077 {
6078 struct sk_buff *msg;
6079 struct nlattr *pinfoattr;
6080 void *hdr;
6081
6082 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6083 if (!msg)
6084 return;
6085
6086 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6087 if (!hdr) {
6088 nlmsg_free(msg);
6089 return;
6090 }
6091
6092 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6093 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6094 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6095
6096 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6097 if (!pinfoattr)
6098 goto nla_put_failure;
6099
6100 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6101
6102 nla_nest_end(msg, pinfoattr);
6103
6104 if (genlmsg_end(msg, hdr) < 0) {
6105 nlmsg_free(msg);
6106 return;
6107 }
6108
6109 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6110 nl80211_mlme_mcgrp.id, gfp);
6111 return;
6112
6113 nla_put_failure:
6114 genlmsg_cancel(msg, hdr);
6115 nlmsg_free(msg);
6116 }
6117
6118 static int nl80211_netlink_notify(struct notifier_block * nb,
6119 unsigned long state,
6120 void *_notify)
6121 {
6122 struct netlink_notify *notify = _notify;
6123 struct cfg80211_registered_device *rdev;
6124 struct wireless_dev *wdev;
6125
6126 if (state != NETLINK_URELEASE)
6127 return NOTIFY_DONE;
6128
6129 rcu_read_lock();
6130
6131 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6132 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6133 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6134
6135 rcu_read_unlock();
6136
6137 return NOTIFY_DONE;
6138 }
6139
6140 static struct notifier_block nl80211_netlink_notifier = {
6141 .notifier_call = nl80211_netlink_notify,
6142 };
6143
6144 /* initialisation/exit functions */
6145
6146 int nl80211_init(void)
6147 {
6148 int err;
6149
6150 err = genl_register_family_with_ops(&nl80211_fam,
6151 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6152 if (err)
6153 return err;
6154
6155 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6156 if (err)
6157 goto err_out;
6158
6159 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6160 if (err)
6161 goto err_out;
6162
6163 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6164 if (err)
6165 goto err_out;
6166
6167 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6168 if (err)
6169 goto err_out;
6170
6171 #ifdef CONFIG_NL80211_TESTMODE
6172 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6173 if (err)
6174 goto err_out;
6175 #endif
6176
6177 err = netlink_register_notifier(&nl80211_netlink_notifier);
6178 if (err)
6179 goto err_out;
6180
6181 return 0;
6182 err_out:
6183 genl_unregister_family(&nl80211_fam);
6184 return err;
6185 }
6186
6187 void nl80211_exit(void)
6188 {
6189 netlink_unregister_notifier(&nl80211_netlink_notifier);
6190 genl_unregister_family(&nl80211_fam);
6191 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree