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netfilter: Fix ip_route_me_harder triggering ip_rt_bug
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob29a1ce1b616bf81241cc19b332a61c9995d1dddb
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 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1683 key.def_uni, key.def_multi);
1684
1685 if (err)
1686 goto out;
1687
1688 #ifdef CONFIG_CFG80211_WEXT
1689 dev->ieee80211_ptr->wext.default_key = key.idx;
1690 #endif
1691 } else {
1692 if (key.def_uni || !key.def_multi) {
1693 err = -EINVAL;
1694 goto out;
1695 }
1696
1697 if (!rdev->ops->set_default_mgmt_key) {
1698 err = -EOPNOTSUPP;
1699 goto out;
1700 }
1701
1702 err = nl80211_key_allowed(dev->ieee80211_ptr);
1703 if (err)
1704 goto out;
1705
1706 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1707 dev, key.idx);
1708 if (err)
1709 goto out;
1710
1711 #ifdef CONFIG_CFG80211_WEXT
1712 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1713 #endif
1714 }
1715
1716 out:
1717 wdev_unlock(dev->ieee80211_ptr);
1718
1719 return err;
1720 }
1721
1722 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1723 {
1724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1725 int err;
1726 struct net_device *dev = info->user_ptr[1];
1727 struct key_parse key;
1728 const u8 *mac_addr = NULL;
1729
1730 err = nl80211_parse_key(info, &key);
1731 if (err)
1732 return err;
1733
1734 if (!key.p.key)
1735 return -EINVAL;
1736
1737 if (info->attrs[NL80211_ATTR_MAC])
1738 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1739
1740 if (key.type == -1) {
1741 if (mac_addr)
1742 key.type = NL80211_KEYTYPE_PAIRWISE;
1743 else
1744 key.type = NL80211_KEYTYPE_GROUP;
1745 }
1746
1747 /* for now */
1748 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1749 key.type != NL80211_KEYTYPE_GROUP)
1750 return -EINVAL;
1751
1752 if (!rdev->ops->add_key)
1753 return -EOPNOTSUPP;
1754
1755 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1756 key.type == NL80211_KEYTYPE_PAIRWISE,
1757 mac_addr))
1758 return -EINVAL;
1759
1760 wdev_lock(dev->ieee80211_ptr);
1761 err = nl80211_key_allowed(dev->ieee80211_ptr);
1762 if (!err)
1763 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1764 key.type == NL80211_KEYTYPE_PAIRWISE,
1765 mac_addr, &key.p);
1766 wdev_unlock(dev->ieee80211_ptr);
1767
1768 return err;
1769 }
1770
1771 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1772 {
1773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1774 int err;
1775 struct net_device *dev = info->user_ptr[1];
1776 u8 *mac_addr = NULL;
1777 struct key_parse key;
1778
1779 err = nl80211_parse_key(info, &key);
1780 if (err)
1781 return err;
1782
1783 if (info->attrs[NL80211_ATTR_MAC])
1784 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1785
1786 if (key.type == -1) {
1787 if (mac_addr)
1788 key.type = NL80211_KEYTYPE_PAIRWISE;
1789 else
1790 key.type = NL80211_KEYTYPE_GROUP;
1791 }
1792
1793 /* for now */
1794 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1795 key.type != NL80211_KEYTYPE_GROUP)
1796 return -EINVAL;
1797
1798 if (!rdev->ops->del_key)
1799 return -EOPNOTSUPP;
1800
1801 wdev_lock(dev->ieee80211_ptr);
1802 err = nl80211_key_allowed(dev->ieee80211_ptr);
1803
1804 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1805 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1806 err = -ENOENT;
1807
1808 if (!err)
1809 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1810 key.type == NL80211_KEYTYPE_PAIRWISE,
1811 mac_addr);
1812
1813 #ifdef CONFIG_CFG80211_WEXT
1814 if (!err) {
1815 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1816 dev->ieee80211_ptr->wext.default_key = -1;
1817 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1818 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1819 }
1820 #endif
1821 wdev_unlock(dev->ieee80211_ptr);
1822
1823 return err;
1824 }
1825
1826 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1827 {
1828 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1829 struct beacon_parameters *info);
1830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1831 struct net_device *dev = info->user_ptr[1];
1832 struct beacon_parameters params;
1833 int haveinfo = 0;
1834
1835 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1836 return -EINVAL;
1837
1838 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1839 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1840 return -EOPNOTSUPP;
1841
1842 switch (info->genlhdr->cmd) {
1843 case NL80211_CMD_NEW_BEACON:
1844 /* these are required for NEW_BEACON */
1845 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1846 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1847 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1848 return -EINVAL;
1849
1850 call = rdev->ops->add_beacon;
1851 break;
1852 case NL80211_CMD_SET_BEACON:
1853 call = rdev->ops->set_beacon;
1854 break;
1855 default:
1856 WARN_ON(1);
1857 return -EOPNOTSUPP;
1858 }
1859
1860 if (!call)
1861 return -EOPNOTSUPP;
1862
1863 memset(&params, 0, sizeof(params));
1864
1865 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1866 params.interval =
1867 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1868 haveinfo = 1;
1869 }
1870
1871 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1872 params.dtim_period =
1873 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1874 haveinfo = 1;
1875 }
1876
1877 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1878 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1879 params.head_len =
1880 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1881 haveinfo = 1;
1882 }
1883
1884 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1885 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1886 params.tail_len =
1887 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1888 haveinfo = 1;
1889 }
1890
1891 if (!haveinfo)
1892 return -EINVAL;
1893
1894 return call(&rdev->wiphy, dev, &params);
1895 }
1896
1897 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1898 {
1899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1900 struct net_device *dev = info->user_ptr[1];
1901
1902 if (!rdev->ops->del_beacon)
1903 return -EOPNOTSUPP;
1904
1905 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1906 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1907 return -EOPNOTSUPP;
1908
1909 return rdev->ops->del_beacon(&rdev->wiphy, dev);
1910 }
1911
1912 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1913 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1914 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1915 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
1916 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
1917 };
1918
1919 static int parse_station_flags(struct genl_info *info,
1920 struct station_parameters *params)
1921 {
1922 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
1923 struct nlattr *nla;
1924 int flag;
1925
1926 /*
1927 * Try parsing the new attribute first so userspace
1928 * can specify both for older kernels.
1929 */
1930 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1931 if (nla) {
1932 struct nl80211_sta_flag_update *sta_flags;
1933
1934 sta_flags = nla_data(nla);
1935 params->sta_flags_mask = sta_flags->mask;
1936 params->sta_flags_set = sta_flags->set;
1937 if ((params->sta_flags_mask |
1938 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1939 return -EINVAL;
1940 return 0;
1941 }
1942
1943 /* if present, parse the old attribute */
1944
1945 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
1946 if (!nla)
1947 return 0;
1948
1949 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1950 nla, sta_flags_policy))
1951 return -EINVAL;
1952
1953 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1954 params->sta_flags_mask &= ~1;
1955
1956 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1957 if (flags[flag])
1958 params->sta_flags_set |= (1<<flag);
1959
1960 return 0;
1961 }
1962
1963 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
1964 int attr)
1965 {
1966 struct nlattr *rate;
1967 u16 bitrate;
1968
1969 rate = nla_nest_start(msg, attr);
1970 if (!rate)
1971 goto nla_put_failure;
1972
1973 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
1974 bitrate = cfg80211_calculate_bitrate(info);
1975 if (bitrate > 0)
1976 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
1977
1978 if (info->flags & RATE_INFO_FLAGS_MCS)
1979 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
1980 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
1981 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
1982 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
1983 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
1984
1985 nla_nest_end(msg, rate);
1986 return true;
1987
1988 nla_put_failure:
1989 return false;
1990 }
1991
1992 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1993 int flags, struct net_device *dev,
1994 const u8 *mac_addr, struct station_info *sinfo)
1995 {
1996 void *hdr;
1997 struct nlattr *sinfoattr;
1998
1999 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2000 if (!hdr)
2001 return -1;
2002
2003 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2004 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2005
2006 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2007
2008 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2009 if (!sinfoattr)
2010 goto nla_put_failure;
2011 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2012 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2013 sinfo->inactive_time);
2014 if (sinfo->filled & STATION_INFO_RX_BYTES)
2015 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2016 sinfo->rx_bytes);
2017 if (sinfo->filled & STATION_INFO_TX_BYTES)
2018 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2019 sinfo->tx_bytes);
2020 if (sinfo->filled & STATION_INFO_LLID)
2021 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2022 sinfo->llid);
2023 if (sinfo->filled & STATION_INFO_PLID)
2024 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2025 sinfo->plid);
2026 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2027 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2028 sinfo->plink_state);
2029 if (sinfo->filled & STATION_INFO_SIGNAL)
2030 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2031 sinfo->signal);
2032 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2033 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2034 sinfo->signal_avg);
2035 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2036 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2037 NL80211_STA_INFO_TX_BITRATE))
2038 goto nla_put_failure;
2039 }
2040 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2041 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2042 NL80211_STA_INFO_RX_BITRATE))
2043 goto nla_put_failure;
2044 }
2045 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2046 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2047 sinfo->rx_packets);
2048 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2049 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2050 sinfo->tx_packets);
2051 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2052 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2053 sinfo->tx_retries);
2054 if (sinfo->filled & STATION_INFO_TX_FAILED)
2055 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2056 sinfo->tx_failed);
2057 nla_nest_end(msg, sinfoattr);
2058
2059 return genlmsg_end(msg, hdr);
2060
2061 nla_put_failure:
2062 genlmsg_cancel(msg, hdr);
2063 return -EMSGSIZE;
2064 }
2065
2066 static int nl80211_dump_station(struct sk_buff *skb,
2067 struct netlink_callback *cb)
2068 {
2069 struct station_info sinfo;
2070 struct cfg80211_registered_device *dev;
2071 struct net_device *netdev;
2072 u8 mac_addr[ETH_ALEN];
2073 int sta_idx = cb->args[1];
2074 int err;
2075
2076 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2077 if (err)
2078 return err;
2079
2080 if (!dev->ops->dump_station) {
2081 err = -EOPNOTSUPP;
2082 goto out_err;
2083 }
2084
2085 while (1) {
2086 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2087 mac_addr, &sinfo);
2088 if (err == -ENOENT)
2089 break;
2090 if (err)
2091 goto out_err;
2092
2093 if (nl80211_send_station(skb,
2094 NETLINK_CB(cb->skb).pid,
2095 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2096 netdev, mac_addr,
2097 &sinfo) < 0)
2098 goto out;
2099
2100 sta_idx++;
2101 }
2102
2103
2104 out:
2105 cb->args[1] = sta_idx;
2106 err = skb->len;
2107 out_err:
2108 nl80211_finish_netdev_dump(dev);
2109
2110 return err;
2111 }
2112
2113 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2114 {
2115 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2116 struct net_device *dev = info->user_ptr[1];
2117 struct station_info sinfo;
2118 struct sk_buff *msg;
2119 u8 *mac_addr = NULL;
2120 int err;
2121
2122 memset(&sinfo, 0, sizeof(sinfo));
2123
2124 if (!info->attrs[NL80211_ATTR_MAC])
2125 return -EINVAL;
2126
2127 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2128
2129 if (!rdev->ops->get_station)
2130 return -EOPNOTSUPP;
2131
2132 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2133 if (err)
2134 return err;
2135
2136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2137 if (!msg)
2138 return -ENOMEM;
2139
2140 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2141 dev, mac_addr, &sinfo) < 0) {
2142 nlmsg_free(msg);
2143 return -ENOBUFS;
2144 }
2145
2146 return genlmsg_reply(msg, info);
2147 }
2148
2149 /*
2150 * Get vlan interface making sure it is running and on the right wiphy.
2151 */
2152 static int get_vlan(struct genl_info *info,
2153 struct cfg80211_registered_device *rdev,
2154 struct net_device **vlan)
2155 {
2156 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2157 *vlan = NULL;
2158
2159 if (vlanattr) {
2160 *vlan = dev_get_by_index(genl_info_net(info),
2161 nla_get_u32(vlanattr));
2162 if (!*vlan)
2163 return -ENODEV;
2164 if (!(*vlan)->ieee80211_ptr)
2165 return -EINVAL;
2166 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2167 return -EINVAL;
2168 if (!netif_running(*vlan))
2169 return -ENETDOWN;
2170 }
2171 return 0;
2172 }
2173
2174 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2175 {
2176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2177 int err;
2178 struct net_device *dev = info->user_ptr[1];
2179 struct station_parameters params;
2180 u8 *mac_addr = NULL;
2181
2182 memset(&params, 0, sizeof(params));
2183
2184 params.listen_interval = -1;
2185
2186 if (info->attrs[NL80211_ATTR_STA_AID])
2187 return -EINVAL;
2188
2189 if (!info->attrs[NL80211_ATTR_MAC])
2190 return -EINVAL;
2191
2192 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2193
2194 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2195 params.supported_rates =
2196 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2197 params.supported_rates_len =
2198 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2199 }
2200
2201 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2202 params.listen_interval =
2203 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2204
2205 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2206 params.ht_capa =
2207 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2208
2209 if (parse_station_flags(info, &params))
2210 return -EINVAL;
2211
2212 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2213 params.plink_action =
2214 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2215
2216 err = get_vlan(info, rdev, &params.vlan);
2217 if (err)
2218 goto out;
2219
2220 /* validate settings */
2221 err = 0;
2222
2223 switch (dev->ieee80211_ptr->iftype) {
2224 case NL80211_IFTYPE_AP:
2225 case NL80211_IFTYPE_AP_VLAN:
2226 case NL80211_IFTYPE_P2P_GO:
2227 /* disallow mesh-specific things */
2228 if (params.plink_action)
2229 err = -EINVAL;
2230 break;
2231 case NL80211_IFTYPE_P2P_CLIENT:
2232 case NL80211_IFTYPE_STATION:
2233 /* disallow everything but AUTHORIZED flag */
2234 if (params.plink_action)
2235 err = -EINVAL;
2236 if (params.vlan)
2237 err = -EINVAL;
2238 if (params.supported_rates)
2239 err = -EINVAL;
2240 if (params.ht_capa)
2241 err = -EINVAL;
2242 if (params.listen_interval >= 0)
2243 err = -EINVAL;
2244 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2245 err = -EINVAL;
2246 break;
2247 case NL80211_IFTYPE_MESH_POINT:
2248 /* disallow things mesh doesn't support */
2249 if (params.vlan)
2250 err = -EINVAL;
2251 if (params.ht_capa)
2252 err = -EINVAL;
2253 if (params.listen_interval >= 0)
2254 err = -EINVAL;
2255 if (params.supported_rates)
2256 err = -EINVAL;
2257 if (params.sta_flags_mask)
2258 err = -EINVAL;
2259 break;
2260 default:
2261 err = -EINVAL;
2262 }
2263
2264 if (err)
2265 goto out;
2266
2267 if (!rdev->ops->change_station) {
2268 err = -EOPNOTSUPP;
2269 goto out;
2270 }
2271
2272 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2273
2274 out:
2275 if (params.vlan)
2276 dev_put(params.vlan);
2277
2278 return err;
2279 }
2280
2281 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2282 {
2283 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2284 int err;
2285 struct net_device *dev = info->user_ptr[1];
2286 struct station_parameters params;
2287 u8 *mac_addr = NULL;
2288
2289 memset(&params, 0, sizeof(params));
2290
2291 if (!info->attrs[NL80211_ATTR_MAC])
2292 return -EINVAL;
2293
2294 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2295 return -EINVAL;
2296
2297 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2298 return -EINVAL;
2299
2300 if (!info->attrs[NL80211_ATTR_STA_AID])
2301 return -EINVAL;
2302
2303 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2304 params.supported_rates =
2305 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2306 params.supported_rates_len =
2307 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2308 params.listen_interval =
2309 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2310
2311 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2312 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2313 return -EINVAL;
2314
2315 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2316 params.ht_capa =
2317 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2318
2319 if (parse_station_flags(info, &params))
2320 return -EINVAL;
2321
2322 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2323 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2324 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2325 return -EINVAL;
2326
2327 err = get_vlan(info, rdev, &params.vlan);
2328 if (err)
2329 goto out;
2330
2331 /* validate settings */
2332 err = 0;
2333
2334 if (!rdev->ops->add_station) {
2335 err = -EOPNOTSUPP;
2336 goto out;
2337 }
2338
2339 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2340
2341 out:
2342 if (params.vlan)
2343 dev_put(params.vlan);
2344 return err;
2345 }
2346
2347 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2348 {
2349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2350 struct net_device *dev = info->user_ptr[1];
2351 u8 *mac_addr = NULL;
2352
2353 if (info->attrs[NL80211_ATTR_MAC])
2354 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2355
2356 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2357 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2358 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2359 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2360 return -EINVAL;
2361
2362 if (!rdev->ops->del_station)
2363 return -EOPNOTSUPP;
2364
2365 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2366 }
2367
2368 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2369 int flags, struct net_device *dev,
2370 u8 *dst, u8 *next_hop,
2371 struct mpath_info *pinfo)
2372 {
2373 void *hdr;
2374 struct nlattr *pinfoattr;
2375
2376 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2377 if (!hdr)
2378 return -1;
2379
2380 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2381 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2382 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2383
2384 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2385
2386 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2387 if (!pinfoattr)
2388 goto nla_put_failure;
2389 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2390 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2391 pinfo->frame_qlen);
2392 if (pinfo->filled & MPATH_INFO_SN)
2393 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2394 pinfo->sn);
2395 if (pinfo->filled & MPATH_INFO_METRIC)
2396 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2397 pinfo->metric);
2398 if (pinfo->filled & MPATH_INFO_EXPTIME)
2399 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2400 pinfo->exptime);
2401 if (pinfo->filled & MPATH_INFO_FLAGS)
2402 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2403 pinfo->flags);
2404 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2405 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2406 pinfo->discovery_timeout);
2407 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2408 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2409 pinfo->discovery_retries);
2410
2411 nla_nest_end(msg, pinfoattr);
2412
2413 return genlmsg_end(msg, hdr);
2414
2415 nla_put_failure:
2416 genlmsg_cancel(msg, hdr);
2417 return -EMSGSIZE;
2418 }
2419
2420 static int nl80211_dump_mpath(struct sk_buff *skb,
2421 struct netlink_callback *cb)
2422 {
2423 struct mpath_info pinfo;
2424 struct cfg80211_registered_device *dev;
2425 struct net_device *netdev;
2426 u8 dst[ETH_ALEN];
2427 u8 next_hop[ETH_ALEN];
2428 int path_idx = cb->args[1];
2429 int err;
2430
2431 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2432 if (err)
2433 return err;
2434
2435 if (!dev->ops->dump_mpath) {
2436 err = -EOPNOTSUPP;
2437 goto out_err;
2438 }
2439
2440 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2441 err = -EOPNOTSUPP;
2442 goto out_err;
2443 }
2444
2445 while (1) {
2446 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2447 dst, next_hop, &pinfo);
2448 if (err == -ENOENT)
2449 break;
2450 if (err)
2451 goto out_err;
2452
2453 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2454 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2455 netdev, dst, next_hop,
2456 &pinfo) < 0)
2457 goto out;
2458
2459 path_idx++;
2460 }
2461
2462
2463 out:
2464 cb->args[1] = path_idx;
2465 err = skb->len;
2466 out_err:
2467 nl80211_finish_netdev_dump(dev);
2468 return err;
2469 }
2470
2471 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2472 {
2473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2474 int err;
2475 struct net_device *dev = info->user_ptr[1];
2476 struct mpath_info pinfo;
2477 struct sk_buff *msg;
2478 u8 *dst = NULL;
2479 u8 next_hop[ETH_ALEN];
2480
2481 memset(&pinfo, 0, sizeof(pinfo));
2482
2483 if (!info->attrs[NL80211_ATTR_MAC])
2484 return -EINVAL;
2485
2486 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2487
2488 if (!rdev->ops->get_mpath)
2489 return -EOPNOTSUPP;
2490
2491 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2492 return -EOPNOTSUPP;
2493
2494 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2495 if (err)
2496 return err;
2497
2498 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2499 if (!msg)
2500 return -ENOMEM;
2501
2502 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2503 dev, dst, next_hop, &pinfo) < 0) {
2504 nlmsg_free(msg);
2505 return -ENOBUFS;
2506 }
2507
2508 return genlmsg_reply(msg, info);
2509 }
2510
2511 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2512 {
2513 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2514 struct net_device *dev = info->user_ptr[1];
2515 u8 *dst = NULL;
2516 u8 *next_hop = NULL;
2517
2518 if (!info->attrs[NL80211_ATTR_MAC])
2519 return -EINVAL;
2520
2521 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2522 return -EINVAL;
2523
2524 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2525 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2526
2527 if (!rdev->ops->change_mpath)
2528 return -EOPNOTSUPP;
2529
2530 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2531 return -EOPNOTSUPP;
2532
2533 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2534 }
2535
2536 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2537 {
2538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2539 struct net_device *dev = info->user_ptr[1];
2540 u8 *dst = NULL;
2541 u8 *next_hop = NULL;
2542
2543 if (!info->attrs[NL80211_ATTR_MAC])
2544 return -EINVAL;
2545
2546 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2547 return -EINVAL;
2548
2549 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2550 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2551
2552 if (!rdev->ops->add_mpath)
2553 return -EOPNOTSUPP;
2554
2555 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2556 return -EOPNOTSUPP;
2557
2558 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2559 }
2560
2561 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2562 {
2563 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2564 struct net_device *dev = info->user_ptr[1];
2565 u8 *dst = NULL;
2566
2567 if (info->attrs[NL80211_ATTR_MAC])
2568 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2569
2570 if (!rdev->ops->del_mpath)
2571 return -EOPNOTSUPP;
2572
2573 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2574 }
2575
2576 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2577 {
2578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2579 struct net_device *dev = info->user_ptr[1];
2580 struct bss_parameters params;
2581
2582 memset(&params, 0, sizeof(params));
2583 /* default to not changing parameters */
2584 params.use_cts_prot = -1;
2585 params.use_short_preamble = -1;
2586 params.use_short_slot_time = -1;
2587 params.ap_isolate = -1;
2588 params.ht_opmode = -1;
2589
2590 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2591 params.use_cts_prot =
2592 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2593 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2594 params.use_short_preamble =
2595 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2596 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2597 params.use_short_slot_time =
2598 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2599 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2600 params.basic_rates =
2601 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2602 params.basic_rates_len =
2603 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2604 }
2605 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2606 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2607 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2608 params.ht_opmode =
2609 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2610
2611 if (!rdev->ops->change_bss)
2612 return -EOPNOTSUPP;
2613
2614 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2615 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2616 return -EOPNOTSUPP;
2617
2618 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2619 }
2620
2621 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2622 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2623 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2624 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2625 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2626 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2627 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2628 };
2629
2630 static int parse_reg_rule(struct nlattr *tb[],
2631 struct ieee80211_reg_rule *reg_rule)
2632 {
2633 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2634 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2635
2636 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2637 return -EINVAL;
2638 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2639 return -EINVAL;
2640 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2641 return -EINVAL;
2642 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2643 return -EINVAL;
2644 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2645 return -EINVAL;
2646
2647 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2648
2649 freq_range->start_freq_khz =
2650 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2651 freq_range->end_freq_khz =
2652 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2653 freq_range->max_bandwidth_khz =
2654 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2655
2656 power_rule->max_eirp =
2657 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2658
2659 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2660 power_rule->max_antenna_gain =
2661 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2662
2663 return 0;
2664 }
2665
2666 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2667 {
2668 int r;
2669 char *data = NULL;
2670
2671 /*
2672 * You should only get this when cfg80211 hasn't yet initialized
2673 * completely when built-in to the kernel right between the time
2674 * window between nl80211_init() and regulatory_init(), if that is
2675 * even possible.
2676 */
2677 mutex_lock(&cfg80211_mutex);
2678 if (unlikely(!cfg80211_regdomain)) {
2679 mutex_unlock(&cfg80211_mutex);
2680 return -EINPROGRESS;
2681 }
2682 mutex_unlock(&cfg80211_mutex);
2683
2684 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2685 return -EINVAL;
2686
2687 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2688
2689 r = regulatory_hint_user(data);
2690
2691 return r;
2692 }
2693
2694 static int nl80211_get_mesh_config(struct sk_buff *skb,
2695 struct genl_info *info)
2696 {
2697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2698 struct net_device *dev = info->user_ptr[1];
2699 struct wireless_dev *wdev = dev->ieee80211_ptr;
2700 struct mesh_config cur_params;
2701 int err = 0;
2702 void *hdr;
2703 struct nlattr *pinfoattr;
2704 struct sk_buff *msg;
2705
2706 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2707 return -EOPNOTSUPP;
2708
2709 if (!rdev->ops->get_mesh_config)
2710 return -EOPNOTSUPP;
2711
2712 wdev_lock(wdev);
2713 /* If not connected, get default parameters */
2714 if (!wdev->mesh_id_len)
2715 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2716 else
2717 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2718 &cur_params);
2719 wdev_unlock(wdev);
2720
2721 if (err)
2722 return err;
2723
2724 /* Draw up a netlink message to send back */
2725 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2726 if (!msg)
2727 return -ENOMEM;
2728 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2729 NL80211_CMD_GET_MESH_CONFIG);
2730 if (!hdr)
2731 goto out;
2732 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2733 if (!pinfoattr)
2734 goto nla_put_failure;
2735 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2736 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2737 cur_params.dot11MeshRetryTimeout);
2738 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2739 cur_params.dot11MeshConfirmTimeout);
2740 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2741 cur_params.dot11MeshHoldingTimeout);
2742 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2743 cur_params.dot11MeshMaxPeerLinks);
2744 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2745 cur_params.dot11MeshMaxRetries);
2746 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2747 cur_params.dot11MeshTTL);
2748 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2749 cur_params.element_ttl);
2750 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2751 cur_params.auto_open_plinks);
2752 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2753 cur_params.dot11MeshHWMPmaxPREQretries);
2754 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2755 cur_params.path_refresh_time);
2756 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2757 cur_params.min_discovery_timeout);
2758 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2759 cur_params.dot11MeshHWMPactivePathTimeout);
2760 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2761 cur_params.dot11MeshHWMPpreqMinInterval);
2762 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2763 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2764 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2765 cur_params.dot11MeshHWMPRootMode);
2766 nla_nest_end(msg, pinfoattr);
2767 genlmsg_end(msg, hdr);
2768 return genlmsg_reply(msg, info);
2769
2770 nla_put_failure:
2771 genlmsg_cancel(msg, hdr);
2772 out:
2773 nlmsg_free(msg);
2774 return -ENOBUFS;
2775 }
2776
2777 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2778 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2779 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2780 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2781 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2782 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2783 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2784 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2785 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2786
2787 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2788 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2789 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2790 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2791 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2792 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2793 };
2794
2795 static const struct nla_policy
2796 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2797 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2798 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2799 [NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE] = { .type = NLA_BINARY,
2800 .len = IEEE80211_MAX_DATA_LEN },
2801 };
2802
2803 static int nl80211_parse_mesh_config(struct genl_info *info,
2804 struct mesh_config *cfg,
2805 u32 *mask_out)
2806 {
2807 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2808 u32 mask = 0;
2809
2810 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2811 do {\
2812 if (table[attr_num]) {\
2813 cfg->param = nla_fn(table[attr_num]); \
2814 mask |= (1 << (attr_num - 1)); \
2815 } \
2816 } while (0);\
2817
2818
2819 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2820 return -EINVAL;
2821 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2822 info->attrs[NL80211_ATTR_MESH_CONFIG],
2823 nl80211_meshconf_params_policy))
2824 return -EINVAL;
2825
2826 /* This makes sure that there aren't more than 32 mesh config
2827 * parameters (otherwise our bitfield scheme would not work.) */
2828 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2829
2830 /* Fill in the params struct */
2831 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2832 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2834 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2835 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2836 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2837 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2838 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2840 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2841 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2842 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
2844 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
2845 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2846 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2848 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2849 nla_get_u8);
2850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2851 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2852 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2853 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2854 nla_get_u16);
2855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2856 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2857 nla_get_u32);
2858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2859 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2860 nla_get_u16);
2861 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2862 dot11MeshHWMPnetDiameterTraversalTime,
2863 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2864 nla_get_u16);
2865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2866 dot11MeshHWMPRootMode, mask,
2867 NL80211_MESHCONF_HWMP_ROOTMODE,
2868 nla_get_u8);
2869 if (mask_out)
2870 *mask_out = mask;
2871
2872 return 0;
2873
2874 #undef FILL_IN_MESH_PARAM_IF_SET
2875 }
2876
2877 static int nl80211_parse_mesh_setup(struct genl_info *info,
2878 struct mesh_setup *setup)
2879 {
2880 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
2881
2882 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
2883 return -EINVAL;
2884 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
2885 info->attrs[NL80211_ATTR_MESH_SETUP],
2886 nl80211_mesh_setup_params_policy))
2887 return -EINVAL;
2888
2889 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
2890 setup->path_sel_proto =
2891 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
2892 IEEE80211_PATH_PROTOCOL_VENDOR :
2893 IEEE80211_PATH_PROTOCOL_HWMP;
2894
2895 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
2896 setup->path_metric =
2897 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
2898 IEEE80211_PATH_METRIC_VENDOR :
2899 IEEE80211_PATH_METRIC_AIRTIME;
2900
2901 if (tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE]) {
2902 struct nlattr *ieattr =
2903 tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE];
2904 if (!is_valid_ie_attr(ieattr))
2905 return -EINVAL;
2906 setup->vendor_ie = nla_data(ieattr);
2907 setup->vendor_ie_len = nla_len(ieattr);
2908 }
2909
2910 return 0;
2911 }
2912
2913 static int nl80211_update_mesh_config(struct sk_buff *skb,
2914 struct genl_info *info)
2915 {
2916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2917 struct net_device *dev = info->user_ptr[1];
2918 struct wireless_dev *wdev = dev->ieee80211_ptr;
2919 struct mesh_config cfg;
2920 u32 mask;
2921 int err;
2922
2923 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2924 return -EOPNOTSUPP;
2925
2926 if (!rdev->ops->update_mesh_config)
2927 return -EOPNOTSUPP;
2928
2929 err = nl80211_parse_mesh_config(info, &cfg, &mask);
2930 if (err)
2931 return err;
2932
2933 wdev_lock(wdev);
2934 if (!wdev->mesh_id_len)
2935 err = -ENOLINK;
2936
2937 if (!err)
2938 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
2939 mask, &cfg);
2940
2941 wdev_unlock(wdev);
2942
2943 return err;
2944 }
2945
2946 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2947 {
2948 struct sk_buff *msg;
2949 void *hdr = NULL;
2950 struct nlattr *nl_reg_rules;
2951 unsigned int i;
2952 int err = -EINVAL;
2953
2954 mutex_lock(&cfg80211_mutex);
2955
2956 if (!cfg80211_regdomain)
2957 goto out;
2958
2959 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2960 if (!msg) {
2961 err = -ENOBUFS;
2962 goto out;
2963 }
2964
2965 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2966 NL80211_CMD_GET_REG);
2967 if (!hdr)
2968 goto put_failure;
2969
2970 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2971 cfg80211_regdomain->alpha2);
2972
2973 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2974 if (!nl_reg_rules)
2975 goto nla_put_failure;
2976
2977 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2978 struct nlattr *nl_reg_rule;
2979 const struct ieee80211_reg_rule *reg_rule;
2980 const struct ieee80211_freq_range *freq_range;
2981 const struct ieee80211_power_rule *power_rule;
2982
2983 reg_rule = &cfg80211_regdomain->reg_rules[i];
2984 freq_range = &reg_rule->freq_range;
2985 power_rule = &reg_rule->power_rule;
2986
2987 nl_reg_rule = nla_nest_start(msg, i);
2988 if (!nl_reg_rule)
2989 goto nla_put_failure;
2990
2991 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2992 reg_rule->flags);
2993 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2994 freq_range->start_freq_khz);
2995 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2996 freq_range->end_freq_khz);
2997 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2998 freq_range->max_bandwidth_khz);
2999 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3000 power_rule->max_antenna_gain);
3001 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3002 power_rule->max_eirp);
3003
3004 nla_nest_end(msg, nl_reg_rule);
3005 }
3006
3007 nla_nest_end(msg, nl_reg_rules);
3008
3009 genlmsg_end(msg, hdr);
3010 err = genlmsg_reply(msg, info);
3011 goto out;
3012
3013 nla_put_failure:
3014 genlmsg_cancel(msg, hdr);
3015 put_failure:
3016 nlmsg_free(msg);
3017 err = -EMSGSIZE;
3018 out:
3019 mutex_unlock(&cfg80211_mutex);
3020 return err;
3021 }
3022
3023 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3024 {
3025 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3026 struct nlattr *nl_reg_rule;
3027 char *alpha2 = NULL;
3028 int rem_reg_rules = 0, r = 0;
3029 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3030 struct ieee80211_regdomain *rd = NULL;
3031
3032 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3033 return -EINVAL;
3034
3035 if (!info->attrs[NL80211_ATTR_REG_RULES])
3036 return -EINVAL;
3037
3038 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3039
3040 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3041 rem_reg_rules) {
3042 num_rules++;
3043 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3044 return -EINVAL;
3045 }
3046
3047 mutex_lock(&cfg80211_mutex);
3048
3049 if (!reg_is_valid_request(alpha2)) {
3050 r = -EINVAL;
3051 goto bad_reg;
3052 }
3053
3054 size_of_regd = sizeof(struct ieee80211_regdomain) +
3055 (num_rules * sizeof(struct ieee80211_reg_rule));
3056
3057 rd = kzalloc(size_of_regd, GFP_KERNEL);
3058 if (!rd) {
3059 r = -ENOMEM;
3060 goto bad_reg;
3061 }
3062
3063 rd->n_reg_rules = num_rules;
3064 rd->alpha2[0] = alpha2[0];
3065 rd->alpha2[1] = alpha2[1];
3066
3067 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3068 rem_reg_rules) {
3069 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3070 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3071 reg_rule_policy);
3072 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3073 if (r)
3074 goto bad_reg;
3075
3076 rule_idx++;
3077
3078 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3079 r = -EINVAL;
3080 goto bad_reg;
3081 }
3082 }
3083
3084 BUG_ON(rule_idx != num_rules);
3085
3086 r = set_regdom(rd);
3087
3088 mutex_unlock(&cfg80211_mutex);
3089
3090 return r;
3091
3092 bad_reg:
3093 mutex_unlock(&cfg80211_mutex);
3094 kfree(rd);
3095 return r;
3096 }
3097
3098 static int validate_scan_freqs(struct nlattr *freqs)
3099 {
3100 struct nlattr *attr1, *attr2;
3101 int n_channels = 0, tmp1, tmp2;
3102
3103 nla_for_each_nested(attr1, freqs, tmp1) {
3104 n_channels++;
3105 /*
3106 * Some hardware has a limited channel list for
3107 * scanning, and it is pretty much nonsensical
3108 * to scan for a channel twice, so disallow that
3109 * and don't require drivers to check that the
3110 * channel list they get isn't longer than what
3111 * they can scan, as long as they can scan all
3112 * the channels they registered at once.
3113 */
3114 nla_for_each_nested(attr2, freqs, tmp2)
3115 if (attr1 != attr2 &&
3116 nla_get_u32(attr1) == nla_get_u32(attr2))
3117 return 0;
3118 }
3119
3120 return n_channels;
3121 }
3122
3123 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3124 {
3125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3126 struct net_device *dev = info->user_ptr[1];
3127 struct cfg80211_scan_request *request;
3128 struct cfg80211_ssid *ssid;
3129 struct ieee80211_channel *channel;
3130 struct nlattr *attr;
3131 struct wiphy *wiphy;
3132 int err, tmp, n_ssids = 0, n_channels, i;
3133 enum ieee80211_band band;
3134 size_t ie_len;
3135
3136 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3137 return -EINVAL;
3138
3139 wiphy = &rdev->wiphy;
3140
3141 if (!rdev->ops->scan)
3142 return -EOPNOTSUPP;
3143
3144 if (rdev->scan_req)
3145 return -EBUSY;
3146
3147 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3148 n_channels = validate_scan_freqs(
3149 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3150 if (!n_channels)
3151 return -EINVAL;
3152 } else {
3153 n_channels = 0;
3154
3155 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3156 if (wiphy->bands[band])
3157 n_channels += wiphy->bands[band]->n_channels;
3158 }
3159
3160 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3161 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3162 n_ssids++;
3163
3164 if (n_ssids > wiphy->max_scan_ssids)
3165 return -EINVAL;
3166
3167 if (info->attrs[NL80211_ATTR_IE])
3168 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3169 else
3170 ie_len = 0;
3171
3172 if (ie_len > wiphy->max_scan_ie_len)
3173 return -EINVAL;
3174
3175 request = kzalloc(sizeof(*request)
3176 + sizeof(*ssid) * n_ssids
3177 + sizeof(channel) * n_channels
3178 + ie_len, GFP_KERNEL);
3179 if (!request)
3180 return -ENOMEM;
3181
3182 if (n_ssids)
3183 request->ssids = (void *)&request->channels[n_channels];
3184 request->n_ssids = n_ssids;
3185 if (ie_len) {
3186 if (request->ssids)
3187 request->ie = (void *)(request->ssids + n_ssids);
3188 else
3189 request->ie = (void *)(request->channels + n_channels);
3190 }
3191
3192 i = 0;
3193 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3194 /* user specified, bail out if channel not found */
3195 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3196 struct ieee80211_channel *chan;
3197
3198 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3199
3200 if (!chan) {
3201 err = -EINVAL;
3202 goto out_free;
3203 }
3204
3205 /* ignore disabled channels */
3206 if (chan->flags & IEEE80211_CHAN_DISABLED)
3207 continue;
3208
3209 request->channels[i] = chan;
3210 i++;
3211 }
3212 } else {
3213 /* all channels */
3214 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3215 int j;
3216 if (!wiphy->bands[band])
3217 continue;
3218 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3219 struct ieee80211_channel *chan;
3220
3221 chan = &wiphy->bands[band]->channels[j];
3222
3223 if (chan->flags & IEEE80211_CHAN_DISABLED)
3224 continue;
3225
3226 request->channels[i] = chan;
3227 i++;
3228 }
3229 }
3230 }
3231
3232 if (!i) {
3233 err = -EINVAL;
3234 goto out_free;
3235 }
3236
3237 request->n_channels = i;
3238
3239 i = 0;
3240 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3241 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3242 request->ssids[i].ssid_len = nla_len(attr);
3243 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3244 err = -EINVAL;
3245 goto out_free;
3246 }
3247 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3248 i++;
3249 }
3250 }
3251
3252 if (info->attrs[NL80211_ATTR_IE]) {
3253 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3254 memcpy((void *)request->ie,
3255 nla_data(info->attrs[NL80211_ATTR_IE]),
3256 request->ie_len);
3257 }
3258
3259 request->dev = dev;
3260 request->wiphy = &rdev->wiphy;
3261
3262 rdev->scan_req = request;
3263 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3264
3265 if (!err) {
3266 nl80211_send_scan_start(rdev, dev);
3267 dev_hold(dev);
3268 } else {
3269 out_free:
3270 rdev->scan_req = NULL;
3271 kfree(request);
3272 }
3273
3274 return err;
3275 }
3276
3277 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3278 struct cfg80211_registered_device *rdev,
3279 struct wireless_dev *wdev,
3280 struct cfg80211_internal_bss *intbss)
3281 {
3282 struct cfg80211_bss *res = &intbss->pub;
3283 void *hdr;
3284 struct nlattr *bss;
3285 int i;
3286
3287 ASSERT_WDEV_LOCK(wdev);
3288
3289 hdr = nl80211hdr_put(msg, pid, seq, flags,
3290 NL80211_CMD_NEW_SCAN_RESULTS);
3291 if (!hdr)
3292 return -1;
3293
3294 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3295 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3296
3297 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3298 if (!bss)
3299 goto nla_put_failure;
3300 if (!is_zero_ether_addr(res->bssid))
3301 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3302 if (res->information_elements && res->len_information_elements)
3303 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3304 res->len_information_elements,
3305 res->information_elements);
3306 if (res->beacon_ies && res->len_beacon_ies &&
3307 res->beacon_ies != res->information_elements)
3308 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3309 res->len_beacon_ies, res->beacon_ies);
3310 if (res->tsf)
3311 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3312 if (res->beacon_interval)
3313 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3314 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3315 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3316 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3317 jiffies_to_msecs(jiffies - intbss->ts));
3318
3319 switch (rdev->wiphy.signal_type) {
3320 case CFG80211_SIGNAL_TYPE_MBM:
3321 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3322 break;
3323 case CFG80211_SIGNAL_TYPE_UNSPEC:
3324 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3325 break;
3326 default:
3327 break;
3328 }
3329
3330 switch (wdev->iftype) {
3331 case NL80211_IFTYPE_P2P_CLIENT:
3332 case NL80211_IFTYPE_STATION:
3333 if (intbss == wdev->current_bss)
3334 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3335 NL80211_BSS_STATUS_ASSOCIATED);
3336 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3337 if (intbss != wdev->auth_bsses[i])
3338 continue;
3339 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3340 NL80211_BSS_STATUS_AUTHENTICATED);
3341 break;
3342 }
3343 break;
3344 case NL80211_IFTYPE_ADHOC:
3345 if (intbss == wdev->current_bss)
3346 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3347 NL80211_BSS_STATUS_IBSS_JOINED);
3348 break;
3349 default:
3350 break;
3351 }
3352
3353 nla_nest_end(msg, bss);
3354
3355 return genlmsg_end(msg, hdr);
3356
3357 nla_put_failure:
3358 genlmsg_cancel(msg, hdr);
3359 return -EMSGSIZE;
3360 }
3361
3362 static int nl80211_dump_scan(struct sk_buff *skb,
3363 struct netlink_callback *cb)
3364 {
3365 struct cfg80211_registered_device *rdev;
3366 struct net_device *dev;
3367 struct cfg80211_internal_bss *scan;
3368 struct wireless_dev *wdev;
3369 int start = cb->args[1], idx = 0;
3370 int err;
3371
3372 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3373 if (err)
3374 return err;
3375
3376 wdev = dev->ieee80211_ptr;
3377
3378 wdev_lock(wdev);
3379 spin_lock_bh(&rdev->bss_lock);
3380 cfg80211_bss_expire(rdev);
3381
3382 list_for_each_entry(scan, &rdev->bss_list, list) {
3383 if (++idx <= start)
3384 continue;
3385 if (nl80211_send_bss(skb,
3386 NETLINK_CB(cb->skb).pid,
3387 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3388 rdev, wdev, scan) < 0) {
3389 idx--;
3390 break;
3391 }
3392 }
3393
3394 spin_unlock_bh(&rdev->bss_lock);
3395 wdev_unlock(wdev);
3396
3397 cb->args[1] = idx;
3398 nl80211_finish_netdev_dump(rdev);
3399
3400 return skb->len;
3401 }
3402
3403 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3404 int flags, struct net_device *dev,
3405 struct survey_info *survey)
3406 {
3407 void *hdr;
3408 struct nlattr *infoattr;
3409
3410 /* Survey without a channel doesn't make sense */
3411 if (!survey->channel)
3412 return -EINVAL;
3413
3414 hdr = nl80211hdr_put(msg, pid, seq, flags,
3415 NL80211_CMD_NEW_SURVEY_RESULTS);
3416 if (!hdr)
3417 return -ENOMEM;
3418
3419 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3420
3421 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3422 if (!infoattr)
3423 goto nla_put_failure;
3424
3425 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3426 survey->channel->center_freq);
3427 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3428 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3429 survey->noise);
3430 if (survey->filled & SURVEY_INFO_IN_USE)
3431 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3432 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3433 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3434 survey->channel_time);
3435 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3436 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3437 survey->channel_time_busy);
3438 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3439 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3440 survey->channel_time_ext_busy);
3441 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3442 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3443 survey->channel_time_rx);
3444 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3445 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3446 survey->channel_time_tx);
3447
3448 nla_nest_end(msg, infoattr);
3449
3450 return genlmsg_end(msg, hdr);
3451
3452 nla_put_failure:
3453 genlmsg_cancel(msg, hdr);
3454 return -EMSGSIZE;
3455 }
3456
3457 static int nl80211_dump_survey(struct sk_buff *skb,
3458 struct netlink_callback *cb)
3459 {
3460 struct survey_info survey;
3461 struct cfg80211_registered_device *dev;
3462 struct net_device *netdev;
3463 int survey_idx = cb->args[1];
3464 int res;
3465
3466 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3467 if (res)
3468 return res;
3469
3470 if (!dev->ops->dump_survey) {
3471 res = -EOPNOTSUPP;
3472 goto out_err;
3473 }
3474
3475 while (1) {
3476 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3477 &survey);
3478 if (res == -ENOENT)
3479 break;
3480 if (res)
3481 goto out_err;
3482
3483 if (nl80211_send_survey(skb,
3484 NETLINK_CB(cb->skb).pid,
3485 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3486 netdev,
3487 &survey) < 0)
3488 goto out;
3489 survey_idx++;
3490 }
3491
3492 out:
3493 cb->args[1] = survey_idx;
3494 res = skb->len;
3495 out_err:
3496 nl80211_finish_netdev_dump(dev);
3497 return res;
3498 }
3499
3500 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3501 {
3502 return auth_type <= NL80211_AUTHTYPE_MAX;
3503 }
3504
3505 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3506 {
3507 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3508 NL80211_WPA_VERSION_2));
3509 }
3510
3511 static bool nl80211_valid_akm_suite(u32 akm)
3512 {
3513 return akm == WLAN_AKM_SUITE_8021X ||
3514 akm == WLAN_AKM_SUITE_PSK;
3515 }
3516
3517 static bool nl80211_valid_cipher_suite(u32 cipher)
3518 {
3519 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3520 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3521 cipher == WLAN_CIPHER_SUITE_TKIP ||
3522 cipher == WLAN_CIPHER_SUITE_CCMP ||
3523 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3524 }
3525
3526
3527 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3528 {
3529 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3530 struct net_device *dev = info->user_ptr[1];
3531 struct ieee80211_channel *chan;
3532 const u8 *bssid, *ssid, *ie = NULL;
3533 int err, ssid_len, ie_len = 0;
3534 enum nl80211_auth_type auth_type;
3535 struct key_parse key;
3536 bool local_state_change;
3537
3538 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3539 return -EINVAL;
3540
3541 if (!info->attrs[NL80211_ATTR_MAC])
3542 return -EINVAL;
3543
3544 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3545 return -EINVAL;
3546
3547 if (!info->attrs[NL80211_ATTR_SSID])
3548 return -EINVAL;
3549
3550 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3551 return -EINVAL;
3552
3553 err = nl80211_parse_key(info, &key);
3554 if (err)
3555 return err;
3556
3557 if (key.idx >= 0) {
3558 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3559 return -EINVAL;
3560 if (!key.p.key || !key.p.key_len)
3561 return -EINVAL;
3562 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3563 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3564 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3565 key.p.key_len != WLAN_KEY_LEN_WEP104))
3566 return -EINVAL;
3567 if (key.idx > 4)
3568 return -EINVAL;
3569 } else {
3570 key.p.key_len = 0;
3571 key.p.key = NULL;
3572 }
3573
3574 if (key.idx >= 0) {
3575 int i;
3576 bool ok = false;
3577 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3578 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3579 ok = true;
3580 break;
3581 }
3582 }
3583 if (!ok)
3584 return -EINVAL;
3585 }
3586
3587 if (!rdev->ops->auth)
3588 return -EOPNOTSUPP;
3589
3590 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3591 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3592 return -EOPNOTSUPP;
3593
3594 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3595 chan = ieee80211_get_channel(&rdev->wiphy,
3596 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3597 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3598 return -EINVAL;
3599
3600 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3601 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3602
3603 if (info->attrs[NL80211_ATTR_IE]) {
3604 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3605 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3606 }
3607
3608 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3609 if (!nl80211_valid_auth_type(auth_type))
3610 return -EINVAL;
3611
3612 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3613
3614 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3615 ssid, ssid_len, ie, ie_len,
3616 key.p.key, key.p.key_len, key.idx,
3617 local_state_change);
3618 }
3619
3620 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3621 struct genl_info *info,
3622 struct cfg80211_crypto_settings *settings,
3623 int cipher_limit)
3624 {
3625 memset(settings, 0, sizeof(*settings));
3626
3627 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3628
3629 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3630 u16 proto;
3631 proto = nla_get_u16(
3632 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3633 settings->control_port_ethertype = cpu_to_be16(proto);
3634 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3635 proto != ETH_P_PAE)
3636 return -EINVAL;
3637 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3638 settings->control_port_no_encrypt = true;
3639 } else
3640 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3641
3642 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3643 void *data;
3644 int len, i;
3645
3646 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3647 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3648 settings->n_ciphers_pairwise = len / sizeof(u32);
3649
3650 if (len % sizeof(u32))
3651 return -EINVAL;
3652
3653 if (settings->n_ciphers_pairwise > cipher_limit)
3654 return -EINVAL;
3655
3656 memcpy(settings->ciphers_pairwise, data, len);
3657
3658 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3659 if (!nl80211_valid_cipher_suite(
3660 settings->ciphers_pairwise[i]))
3661 return -EINVAL;
3662 }
3663
3664 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3665 settings->cipher_group =
3666 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3667 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3668 return -EINVAL;
3669 }
3670
3671 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3672 settings->wpa_versions =
3673 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3674 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3675 return -EINVAL;
3676 }
3677
3678 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3679 void *data;
3680 int len, i;
3681
3682 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3683 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3684 settings->n_akm_suites = len / sizeof(u32);
3685
3686 if (len % sizeof(u32))
3687 return -EINVAL;
3688
3689 memcpy(settings->akm_suites, data, len);
3690
3691 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3692 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3693 return -EINVAL;
3694 }
3695
3696 return 0;
3697 }
3698
3699 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3700 {
3701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3702 struct net_device *dev = info->user_ptr[1];
3703 struct cfg80211_crypto_settings crypto;
3704 struct ieee80211_channel *chan;
3705 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3706 int err, ssid_len, ie_len = 0;
3707 bool use_mfp = false;
3708
3709 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3710 return -EINVAL;
3711
3712 if (!info->attrs[NL80211_ATTR_MAC] ||
3713 !info->attrs[NL80211_ATTR_SSID] ||
3714 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3715 return -EINVAL;
3716
3717 if (!rdev->ops->assoc)
3718 return -EOPNOTSUPP;
3719
3720 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3721 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3722 return -EOPNOTSUPP;
3723
3724 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3725
3726 chan = ieee80211_get_channel(&rdev->wiphy,
3727 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3728 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3729 return -EINVAL;
3730
3731 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3732 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3733
3734 if (info->attrs[NL80211_ATTR_IE]) {
3735 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3736 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3737 }
3738
3739 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3740 enum nl80211_mfp mfp =
3741 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3742 if (mfp == NL80211_MFP_REQUIRED)
3743 use_mfp = true;
3744 else if (mfp != NL80211_MFP_NO)
3745 return -EINVAL;
3746 }
3747
3748 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3749 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3750
3751 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
3752 if (!err)
3753 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3754 ssid, ssid_len, ie, ie_len, use_mfp,
3755 &crypto);
3756
3757 return err;
3758 }
3759
3760 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3761 {
3762 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3763 struct net_device *dev = info->user_ptr[1];
3764 const u8 *ie = NULL, *bssid;
3765 int ie_len = 0;
3766 u16 reason_code;
3767 bool local_state_change;
3768
3769 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3770 return -EINVAL;
3771
3772 if (!info->attrs[NL80211_ATTR_MAC])
3773 return -EINVAL;
3774
3775 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3776 return -EINVAL;
3777
3778 if (!rdev->ops->deauth)
3779 return -EOPNOTSUPP;
3780
3781 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3782 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3783 return -EOPNOTSUPP;
3784
3785 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3786
3787 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3788 if (reason_code == 0) {
3789 /* Reason Code 0 is reserved */
3790 return -EINVAL;
3791 }
3792
3793 if (info->attrs[NL80211_ATTR_IE]) {
3794 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3795 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3796 }
3797
3798 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3799
3800 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3801 local_state_change);
3802 }
3803
3804 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3805 {
3806 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3807 struct net_device *dev = info->user_ptr[1];
3808 const u8 *ie = NULL, *bssid;
3809 int ie_len = 0;
3810 u16 reason_code;
3811 bool local_state_change;
3812
3813 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3814 return -EINVAL;
3815
3816 if (!info->attrs[NL80211_ATTR_MAC])
3817 return -EINVAL;
3818
3819 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3820 return -EINVAL;
3821
3822 if (!rdev->ops->disassoc)
3823 return -EOPNOTSUPP;
3824
3825 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3826 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3827 return -EOPNOTSUPP;
3828
3829 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3830
3831 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3832 if (reason_code == 0) {
3833 /* Reason Code 0 is reserved */
3834 return -EINVAL;
3835 }
3836
3837 if (info->attrs[NL80211_ATTR_IE]) {
3838 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3839 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3840 }
3841
3842 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3843
3844 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3845 local_state_change);
3846 }
3847
3848 static bool
3849 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
3850 int mcast_rate[IEEE80211_NUM_BANDS],
3851 int rateval)
3852 {
3853 struct wiphy *wiphy = &rdev->wiphy;
3854 bool found = false;
3855 int band, i;
3856
3857 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3858 struct ieee80211_supported_band *sband;
3859
3860 sband = wiphy->bands[band];
3861 if (!sband)
3862 continue;
3863
3864 for (i = 0; i < sband->n_bitrates; i++) {
3865 if (sband->bitrates[i].bitrate == rateval) {
3866 mcast_rate[band] = i + 1;
3867 found = true;
3868 break;
3869 }
3870 }
3871 }
3872
3873 return found;
3874 }
3875
3876 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3877 {
3878 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3879 struct net_device *dev = info->user_ptr[1];
3880 struct cfg80211_ibss_params ibss;
3881 struct wiphy *wiphy;
3882 struct cfg80211_cached_keys *connkeys = NULL;
3883 int err;
3884
3885 memset(&ibss, 0, sizeof(ibss));
3886
3887 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3888 return -EINVAL;
3889
3890 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3891 !info->attrs[NL80211_ATTR_SSID] ||
3892 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3893 return -EINVAL;
3894
3895 ibss.beacon_interval = 100;
3896
3897 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3898 ibss.beacon_interval =
3899 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3900 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3901 return -EINVAL;
3902 }
3903
3904 if (!rdev->ops->join_ibss)
3905 return -EOPNOTSUPP;
3906
3907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3908 return -EOPNOTSUPP;
3909
3910 wiphy = &rdev->wiphy;
3911
3912 if (info->attrs[NL80211_ATTR_MAC])
3913 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3914 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3915 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3916
3917 if (info->attrs[NL80211_ATTR_IE]) {
3918 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3919 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3920 }
3921
3922 ibss.channel = ieee80211_get_channel(wiphy,
3923 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3924 if (!ibss.channel ||
3925 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3926 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3927 return -EINVAL;
3928
3929 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3930 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3931
3932 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3933 u8 *rates =
3934 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3935 int n_rates =
3936 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3937 struct ieee80211_supported_band *sband =
3938 wiphy->bands[ibss.channel->band];
3939 int i, j;
3940
3941 if (n_rates == 0)
3942 return -EINVAL;
3943
3944 for (i = 0; i < n_rates; i++) {
3945 int rate = (rates[i] & 0x7f) * 5;
3946 bool found = false;
3947
3948 for (j = 0; j < sband->n_bitrates; j++) {
3949 if (sband->bitrates[j].bitrate == rate) {
3950 found = true;
3951 ibss.basic_rates |= BIT(j);
3952 break;
3953 }
3954 }
3955 if (!found)
3956 return -EINVAL;
3957 }
3958 }
3959
3960 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
3961 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
3962 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
3963 return -EINVAL;
3964
3965 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3966 connkeys = nl80211_parse_connkeys(rdev,
3967 info->attrs[NL80211_ATTR_KEYS]);
3968 if (IS_ERR(connkeys))
3969 return PTR_ERR(connkeys);
3970 }
3971
3972 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3973 if (err)
3974 kfree(connkeys);
3975 return err;
3976 }
3977
3978 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3979 {
3980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3981 struct net_device *dev = info->user_ptr[1];
3982
3983 if (!rdev->ops->leave_ibss)
3984 return -EOPNOTSUPP;
3985
3986 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3987 return -EOPNOTSUPP;
3988
3989 return cfg80211_leave_ibss(rdev, dev, false);
3990 }
3991
3992 #ifdef CONFIG_NL80211_TESTMODE
3993 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3994 .name = "testmode",
3995 };
3996
3997 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3998 {
3999 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4000 int err;
4001
4002 if (!info->attrs[NL80211_ATTR_TESTDATA])
4003 return -EINVAL;
4004
4005 err = -EOPNOTSUPP;
4006 if (rdev->ops->testmode_cmd) {
4007 rdev->testmode_info = info;
4008 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4009 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4010 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4011 rdev->testmode_info = NULL;
4012 }
4013
4014 return err;
4015 }
4016
4017 static struct sk_buff *
4018 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4019 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4020 {
4021 struct sk_buff *skb;
4022 void *hdr;
4023 struct nlattr *data;
4024
4025 skb = nlmsg_new(approxlen + 100, gfp);
4026 if (!skb)
4027 return NULL;
4028
4029 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4030 if (!hdr) {
4031 kfree_skb(skb);
4032 return NULL;
4033 }
4034
4035 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4036 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4037
4038 ((void **)skb->cb)[0] = rdev;
4039 ((void **)skb->cb)[1] = hdr;
4040 ((void **)skb->cb)[2] = data;
4041
4042 return skb;
4043
4044 nla_put_failure:
4045 kfree_skb(skb);
4046 return NULL;
4047 }
4048
4049 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4050 int approxlen)
4051 {
4052 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4053
4054 if (WARN_ON(!rdev->testmode_info))
4055 return NULL;
4056
4057 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4058 rdev->testmode_info->snd_pid,
4059 rdev->testmode_info->snd_seq,
4060 GFP_KERNEL);
4061 }
4062 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4063
4064 int cfg80211_testmode_reply(struct sk_buff *skb)
4065 {
4066 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4067 void *hdr = ((void **)skb->cb)[1];
4068 struct nlattr *data = ((void **)skb->cb)[2];
4069
4070 if (WARN_ON(!rdev->testmode_info)) {
4071 kfree_skb(skb);
4072 return -EINVAL;
4073 }
4074
4075 nla_nest_end(skb, data);
4076 genlmsg_end(skb, hdr);
4077 return genlmsg_reply(skb, rdev->testmode_info);
4078 }
4079 EXPORT_SYMBOL(cfg80211_testmode_reply);
4080
4081 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4082 int approxlen, gfp_t gfp)
4083 {
4084 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4085
4086 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4087 }
4088 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4089
4090 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4091 {
4092 void *hdr = ((void **)skb->cb)[1];
4093 struct nlattr *data = ((void **)skb->cb)[2];
4094
4095 nla_nest_end(skb, data);
4096 genlmsg_end(skb, hdr);
4097 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4098 }
4099 EXPORT_SYMBOL(cfg80211_testmode_event);
4100 #endif
4101
4102 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4103 {
4104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4105 struct net_device *dev = info->user_ptr[1];
4106 struct cfg80211_connect_params connect;
4107 struct wiphy *wiphy;
4108 struct cfg80211_cached_keys *connkeys = NULL;
4109 int err;
4110
4111 memset(&connect, 0, sizeof(connect));
4112
4113 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4114 return -EINVAL;
4115
4116 if (!info->attrs[NL80211_ATTR_SSID] ||
4117 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4118 return -EINVAL;
4119
4120 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4121 connect.auth_type =
4122 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4123 if (!nl80211_valid_auth_type(connect.auth_type))
4124 return -EINVAL;
4125 } else
4126 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4127
4128 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4129
4130 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4131 NL80211_MAX_NR_CIPHER_SUITES);
4132 if (err)
4133 return err;
4134
4135 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4136 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4137 return -EOPNOTSUPP;
4138
4139 wiphy = &rdev->wiphy;
4140
4141 if (info->attrs[NL80211_ATTR_MAC])
4142 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4143 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4144 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4145
4146 if (info->attrs[NL80211_ATTR_IE]) {
4147 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4148 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4149 }
4150
4151 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4152 connect.channel =
4153 ieee80211_get_channel(wiphy,
4154 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4155 if (!connect.channel ||
4156 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4157 return -EINVAL;
4158 }
4159
4160 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4161 connkeys = nl80211_parse_connkeys(rdev,
4162 info->attrs[NL80211_ATTR_KEYS]);
4163 if (IS_ERR(connkeys))
4164 return PTR_ERR(connkeys);
4165 }
4166
4167 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4168 if (err)
4169 kfree(connkeys);
4170 return err;
4171 }
4172
4173 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4174 {
4175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4176 struct net_device *dev = info->user_ptr[1];
4177 u16 reason;
4178
4179 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4180 reason = WLAN_REASON_DEAUTH_LEAVING;
4181 else
4182 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4183
4184 if (reason == 0)
4185 return -EINVAL;
4186
4187 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4189 return -EOPNOTSUPP;
4190
4191 return cfg80211_disconnect(rdev, dev, reason, true);
4192 }
4193
4194 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4195 {
4196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4197 struct net *net;
4198 int err;
4199 u32 pid;
4200
4201 if (!info->attrs[NL80211_ATTR_PID])
4202 return -EINVAL;
4203
4204 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4205
4206 net = get_net_ns_by_pid(pid);
4207 if (IS_ERR(net))
4208 return PTR_ERR(net);
4209
4210 err = 0;
4211
4212 /* check if anything to do */
4213 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4214 err = cfg80211_switch_netns(rdev, net);
4215
4216 put_net(net);
4217 return err;
4218 }
4219
4220 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4221 {
4222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4223 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4224 struct cfg80211_pmksa *pmksa) = NULL;
4225 struct net_device *dev = info->user_ptr[1];
4226 struct cfg80211_pmksa pmksa;
4227
4228 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4229
4230 if (!info->attrs[NL80211_ATTR_MAC])
4231 return -EINVAL;
4232
4233 if (!info->attrs[NL80211_ATTR_PMKID])
4234 return -EINVAL;
4235
4236 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4237 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4238
4239 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4240 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4241 return -EOPNOTSUPP;
4242
4243 switch (info->genlhdr->cmd) {
4244 case NL80211_CMD_SET_PMKSA:
4245 rdev_ops = rdev->ops->set_pmksa;
4246 break;
4247 case NL80211_CMD_DEL_PMKSA:
4248 rdev_ops = rdev->ops->del_pmksa;
4249 break;
4250 default:
4251 WARN_ON(1);
4252 break;
4253 }
4254
4255 if (!rdev_ops)
4256 return -EOPNOTSUPP;
4257
4258 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4259 }
4260
4261 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4262 {
4263 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4264 struct net_device *dev = info->user_ptr[1];
4265
4266 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4267 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4268 return -EOPNOTSUPP;
4269
4270 if (!rdev->ops->flush_pmksa)
4271 return -EOPNOTSUPP;
4272
4273 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4274 }
4275
4276 static int nl80211_remain_on_channel(struct sk_buff *skb,
4277 struct genl_info *info)
4278 {
4279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4280 struct net_device *dev = info->user_ptr[1];
4281 struct ieee80211_channel *chan;
4282 struct sk_buff *msg;
4283 void *hdr;
4284 u64 cookie;
4285 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4286 u32 freq, duration;
4287 int err;
4288
4289 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4290 !info->attrs[NL80211_ATTR_DURATION])
4291 return -EINVAL;
4292
4293 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4294
4295 /*
4296 * We should be on that channel for at least one jiffie,
4297 * and more than 5 seconds seems excessive.
4298 */
4299 if (!duration || !msecs_to_jiffies(duration) ||
4300 duration > rdev->wiphy.max_remain_on_channel_duration)
4301 return -EINVAL;
4302
4303 if (!rdev->ops->remain_on_channel)
4304 return -EOPNOTSUPP;
4305
4306 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4307 channel_type = nla_get_u32(
4308 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4309 if (channel_type != NL80211_CHAN_NO_HT &&
4310 channel_type != NL80211_CHAN_HT20 &&
4311 channel_type != NL80211_CHAN_HT40PLUS &&
4312 channel_type != NL80211_CHAN_HT40MINUS)
4313 return -EINVAL;
4314 }
4315
4316 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4317 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4318 if (chan == NULL)
4319 return -EINVAL;
4320
4321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4322 if (!msg)
4323 return -ENOMEM;
4324
4325 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4326 NL80211_CMD_REMAIN_ON_CHANNEL);
4327
4328 if (IS_ERR(hdr)) {
4329 err = PTR_ERR(hdr);
4330 goto free_msg;
4331 }
4332
4333 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4334 channel_type, duration, &cookie);
4335
4336 if (err)
4337 goto free_msg;
4338
4339 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4340
4341 genlmsg_end(msg, hdr);
4342
4343 return genlmsg_reply(msg, info);
4344
4345 nla_put_failure:
4346 err = -ENOBUFS;
4347 free_msg:
4348 nlmsg_free(msg);
4349 return err;
4350 }
4351
4352 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4353 struct genl_info *info)
4354 {
4355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4356 struct net_device *dev = info->user_ptr[1];
4357 u64 cookie;
4358
4359 if (!info->attrs[NL80211_ATTR_COOKIE])
4360 return -EINVAL;
4361
4362 if (!rdev->ops->cancel_remain_on_channel)
4363 return -EOPNOTSUPP;
4364
4365 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4366
4367 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4368 }
4369
4370 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4371 u8 *rates, u8 rates_len)
4372 {
4373 u8 i;
4374 u32 mask = 0;
4375
4376 for (i = 0; i < rates_len; i++) {
4377 int rate = (rates[i] & 0x7f) * 5;
4378 int ridx;
4379 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4380 struct ieee80211_rate *srate =
4381 &sband->bitrates[ridx];
4382 if (rate == srate->bitrate) {
4383 mask |= 1 << ridx;
4384 break;
4385 }
4386 }
4387 if (ridx == sband->n_bitrates)
4388 return 0; /* rate not found */
4389 }
4390
4391 return mask;
4392 }
4393
4394 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4395 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4396 .len = NL80211_MAX_SUPP_RATES },
4397 };
4398
4399 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4400 struct genl_info *info)
4401 {
4402 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4403 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4404 struct cfg80211_bitrate_mask mask;
4405 int rem, i;
4406 struct net_device *dev = info->user_ptr[1];
4407 struct nlattr *tx_rates;
4408 struct ieee80211_supported_band *sband;
4409
4410 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4411 return -EINVAL;
4412
4413 if (!rdev->ops->set_bitrate_mask)
4414 return -EOPNOTSUPP;
4415
4416 memset(&mask, 0, sizeof(mask));
4417 /* Default to all rates enabled */
4418 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4419 sband = rdev->wiphy.bands[i];
4420 mask.control[i].legacy =
4421 sband ? (1 << sband->n_bitrates) - 1 : 0;
4422 }
4423
4424 /*
4425 * The nested attribute uses enum nl80211_band as the index. This maps
4426 * directly to the enum ieee80211_band values used in cfg80211.
4427 */
4428 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4429 {
4430 enum ieee80211_band band = nla_type(tx_rates);
4431 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4432 return -EINVAL;
4433 sband = rdev->wiphy.bands[band];
4434 if (sband == NULL)
4435 return -EINVAL;
4436 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4437 nla_len(tx_rates), nl80211_txattr_policy);
4438 if (tb[NL80211_TXRATE_LEGACY]) {
4439 mask.control[band].legacy = rateset_to_mask(
4440 sband,
4441 nla_data(tb[NL80211_TXRATE_LEGACY]),
4442 nla_len(tb[NL80211_TXRATE_LEGACY]));
4443 if (mask.control[band].legacy == 0)
4444 return -EINVAL;
4445 }
4446 }
4447
4448 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4449 }
4450
4451 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4452 {
4453 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4454 struct net_device *dev = info->user_ptr[1];
4455 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4456
4457 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4458 return -EINVAL;
4459
4460 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4461 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4462
4463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4465 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4466 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4467 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4468 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4469 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4470 return -EOPNOTSUPP;
4471
4472 /* not much point in registering if we can't reply */
4473 if (!rdev->ops->mgmt_tx)
4474 return -EOPNOTSUPP;
4475
4476 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4477 frame_type,
4478 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4479 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4480 }
4481
4482 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4483 {
4484 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4485 struct net_device *dev = info->user_ptr[1];
4486 struct ieee80211_channel *chan;
4487 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4488 bool channel_type_valid = false;
4489 u32 freq;
4490 int err;
4491 void *hdr;
4492 u64 cookie;
4493 struct sk_buff *msg;
4494 unsigned int wait = 0;
4495 bool offchan;
4496
4497 if (!info->attrs[NL80211_ATTR_FRAME] ||
4498 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4499 return -EINVAL;
4500
4501 if (!rdev->ops->mgmt_tx)
4502 return -EOPNOTSUPP;
4503
4504 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4505 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4506 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4507 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4511 return -EOPNOTSUPP;
4512
4513 if (info->attrs[NL80211_ATTR_DURATION]) {
4514 if (!rdev->ops->mgmt_tx_cancel_wait)
4515 return -EINVAL;
4516 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4517 }
4518
4519 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4520 channel_type = nla_get_u32(
4521 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4522 if (channel_type != NL80211_CHAN_NO_HT &&
4523 channel_type != NL80211_CHAN_HT20 &&
4524 channel_type != NL80211_CHAN_HT40PLUS &&
4525 channel_type != NL80211_CHAN_HT40MINUS)
4526 return -EINVAL;
4527 channel_type_valid = true;
4528 }
4529
4530 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4531
4532 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4533 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4534 if (chan == NULL)
4535 return -EINVAL;
4536
4537 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4538 if (!msg)
4539 return -ENOMEM;
4540
4541 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4542 NL80211_CMD_FRAME);
4543
4544 if (IS_ERR(hdr)) {
4545 err = PTR_ERR(hdr);
4546 goto free_msg;
4547 }
4548 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4549 channel_type_valid, wait,
4550 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4551 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4552 &cookie);
4553 if (err)
4554 goto free_msg;
4555
4556 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4557
4558 genlmsg_end(msg, hdr);
4559 return genlmsg_reply(msg, info);
4560
4561 nla_put_failure:
4562 err = -ENOBUFS;
4563 free_msg:
4564 nlmsg_free(msg);
4565 return err;
4566 }
4567
4568 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4569 {
4570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4571 struct net_device *dev = info->user_ptr[1];
4572 u64 cookie;
4573
4574 if (!info->attrs[NL80211_ATTR_COOKIE])
4575 return -EINVAL;
4576
4577 if (!rdev->ops->mgmt_tx_cancel_wait)
4578 return -EOPNOTSUPP;
4579
4580 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4581 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4582 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4583 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4584 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4586 return -EOPNOTSUPP;
4587
4588 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4589
4590 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4591 }
4592
4593 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4594 {
4595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4596 struct wireless_dev *wdev;
4597 struct net_device *dev = info->user_ptr[1];
4598 u8 ps_state;
4599 bool state;
4600 int err;
4601
4602 if (!info->attrs[NL80211_ATTR_PS_STATE])
4603 return -EINVAL;
4604
4605 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4606
4607 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4608 return -EINVAL;
4609
4610 wdev = dev->ieee80211_ptr;
4611
4612 if (!rdev->ops->set_power_mgmt)
4613 return -EOPNOTSUPP;
4614
4615 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4616
4617 if (state == wdev->ps)
4618 return 0;
4619
4620 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4621 wdev->ps_timeout);
4622 if (!err)
4623 wdev->ps = state;
4624 return err;
4625 }
4626
4627 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4628 {
4629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4630 enum nl80211_ps_state ps_state;
4631 struct wireless_dev *wdev;
4632 struct net_device *dev = info->user_ptr[1];
4633 struct sk_buff *msg;
4634 void *hdr;
4635 int err;
4636
4637 wdev = dev->ieee80211_ptr;
4638
4639 if (!rdev->ops->set_power_mgmt)
4640 return -EOPNOTSUPP;
4641
4642 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4643 if (!msg)
4644 return -ENOMEM;
4645
4646 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4647 NL80211_CMD_GET_POWER_SAVE);
4648 if (!hdr) {
4649 err = -ENOBUFS;
4650 goto free_msg;
4651 }
4652
4653 if (wdev->ps)
4654 ps_state = NL80211_PS_ENABLED;
4655 else
4656 ps_state = NL80211_PS_DISABLED;
4657
4658 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4659
4660 genlmsg_end(msg, hdr);
4661 return genlmsg_reply(msg, info);
4662
4663 nla_put_failure:
4664 err = -ENOBUFS;
4665 free_msg:
4666 nlmsg_free(msg);
4667 return err;
4668 }
4669
4670 static struct nla_policy
4671 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4672 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4673 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4674 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4675 };
4676
4677 static int nl80211_set_cqm_rssi(struct genl_info *info,
4678 s32 threshold, u32 hysteresis)
4679 {
4680 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4681 struct wireless_dev *wdev;
4682 struct net_device *dev = info->user_ptr[1];
4683
4684 if (threshold > 0)
4685 return -EINVAL;
4686
4687 wdev = dev->ieee80211_ptr;
4688
4689 if (!rdev->ops->set_cqm_rssi_config)
4690 return -EOPNOTSUPP;
4691
4692 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4693 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4694 return -EOPNOTSUPP;
4695
4696 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4697 threshold, hysteresis);
4698 }
4699
4700 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4701 {
4702 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4703 struct nlattr *cqm;
4704 int err;
4705
4706 cqm = info->attrs[NL80211_ATTR_CQM];
4707 if (!cqm) {
4708 err = -EINVAL;
4709 goto out;
4710 }
4711
4712 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4713 nl80211_attr_cqm_policy);
4714 if (err)
4715 goto out;
4716
4717 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4718 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4719 s32 threshold;
4720 u32 hysteresis;
4721 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4722 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4723 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4724 } else
4725 err = -EINVAL;
4726
4727 out:
4728 return err;
4729 }
4730
4731 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
4732 {
4733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4734 struct net_device *dev = info->user_ptr[1];
4735 struct mesh_config cfg;
4736 struct mesh_setup setup;
4737 int err;
4738
4739 /* start with default */
4740 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
4741 memcpy(&setup, &default_mesh_setup, sizeof(setup));
4742
4743 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
4744 /* and parse parameters if given */
4745 err = nl80211_parse_mesh_config(info, &cfg, NULL);
4746 if (err)
4747 return err;
4748 }
4749
4750 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
4751 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
4752 return -EINVAL;
4753
4754 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
4755 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4756
4757 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
4758 /* parse additional setup parameters if given */
4759 err = nl80211_parse_mesh_setup(info, &setup);
4760 if (err)
4761 return err;
4762 }
4763
4764 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
4765 }
4766
4767 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
4768 {
4769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4770 struct net_device *dev = info->user_ptr[1];
4771
4772 return cfg80211_leave_mesh(rdev, dev);
4773 }
4774
4775 #define NL80211_FLAG_NEED_WIPHY 0x01
4776 #define NL80211_FLAG_NEED_NETDEV 0x02
4777 #define NL80211_FLAG_NEED_RTNL 0x04
4778 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4779 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4780 NL80211_FLAG_CHECK_NETDEV_UP)
4781
4782 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4783 struct genl_info *info)
4784 {
4785 struct cfg80211_registered_device *rdev;
4786 struct net_device *dev;
4787 int err;
4788 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4789
4790 if (rtnl)
4791 rtnl_lock();
4792
4793 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4794 rdev = cfg80211_get_dev_from_info(info);
4795 if (IS_ERR(rdev)) {
4796 if (rtnl)
4797 rtnl_unlock();
4798 return PTR_ERR(rdev);
4799 }
4800 info->user_ptr[0] = rdev;
4801 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4802 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4803 if (err) {
4804 if (rtnl)
4805 rtnl_unlock();
4806 return err;
4807 }
4808 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4809 !netif_running(dev)) {
4810 cfg80211_unlock_rdev(rdev);
4811 dev_put(dev);
4812 if (rtnl)
4813 rtnl_unlock();
4814 return -ENETDOWN;
4815 }
4816 info->user_ptr[0] = rdev;
4817 info->user_ptr[1] = dev;
4818 }
4819
4820 return 0;
4821 }
4822
4823 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4824 struct genl_info *info)
4825 {
4826 if (info->user_ptr[0])
4827 cfg80211_unlock_rdev(info->user_ptr[0]);
4828 if (info->user_ptr[1])
4829 dev_put(info->user_ptr[1]);
4830 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4831 rtnl_unlock();
4832 }
4833
4834 static struct genl_ops nl80211_ops[] = {
4835 {
4836 .cmd = NL80211_CMD_GET_WIPHY,
4837 .doit = nl80211_get_wiphy,
4838 .dumpit = nl80211_dump_wiphy,
4839 .policy = nl80211_policy,
4840 /* can be retrieved by unprivileged users */
4841 .internal_flags = NL80211_FLAG_NEED_WIPHY,
4842 },
4843 {
4844 .cmd = NL80211_CMD_SET_WIPHY,
4845 .doit = nl80211_set_wiphy,
4846 .policy = nl80211_policy,
4847 .flags = GENL_ADMIN_PERM,
4848 .internal_flags = NL80211_FLAG_NEED_RTNL,
4849 },
4850 {
4851 .cmd = NL80211_CMD_GET_INTERFACE,
4852 .doit = nl80211_get_interface,
4853 .dumpit = nl80211_dump_interface,
4854 .policy = nl80211_policy,
4855 /* can be retrieved by unprivileged users */
4856 .internal_flags = NL80211_FLAG_NEED_NETDEV,
4857 },
4858 {
4859 .cmd = NL80211_CMD_SET_INTERFACE,
4860 .doit = nl80211_set_interface,
4861 .policy = nl80211_policy,
4862 .flags = GENL_ADMIN_PERM,
4863 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4864 NL80211_FLAG_NEED_RTNL,
4865 },
4866 {
4867 .cmd = NL80211_CMD_NEW_INTERFACE,
4868 .doit = nl80211_new_interface,
4869 .policy = nl80211_policy,
4870 .flags = GENL_ADMIN_PERM,
4871 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4872 NL80211_FLAG_NEED_RTNL,
4873 },
4874 {
4875 .cmd = NL80211_CMD_DEL_INTERFACE,
4876 .doit = nl80211_del_interface,
4877 .policy = nl80211_policy,
4878 .flags = GENL_ADMIN_PERM,
4879 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4880 NL80211_FLAG_NEED_RTNL,
4881 },
4882 {
4883 .cmd = NL80211_CMD_GET_KEY,
4884 .doit = nl80211_get_key,
4885 .policy = nl80211_policy,
4886 .flags = GENL_ADMIN_PERM,
4887 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4888 NL80211_FLAG_NEED_RTNL,
4889 },
4890 {
4891 .cmd = NL80211_CMD_SET_KEY,
4892 .doit = nl80211_set_key,
4893 .policy = nl80211_policy,
4894 .flags = GENL_ADMIN_PERM,
4895 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4896 NL80211_FLAG_NEED_RTNL,
4897 },
4898 {
4899 .cmd = NL80211_CMD_NEW_KEY,
4900 .doit = nl80211_new_key,
4901 .policy = nl80211_policy,
4902 .flags = GENL_ADMIN_PERM,
4903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4904 NL80211_FLAG_NEED_RTNL,
4905 },
4906 {
4907 .cmd = NL80211_CMD_DEL_KEY,
4908 .doit = nl80211_del_key,
4909 .policy = nl80211_policy,
4910 .flags = GENL_ADMIN_PERM,
4911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4912 NL80211_FLAG_NEED_RTNL,
4913 },
4914 {
4915 .cmd = NL80211_CMD_SET_BEACON,
4916 .policy = nl80211_policy,
4917 .flags = GENL_ADMIN_PERM,
4918 .doit = nl80211_addset_beacon,
4919 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4920 NL80211_FLAG_NEED_RTNL,
4921 },
4922 {
4923 .cmd = NL80211_CMD_NEW_BEACON,
4924 .policy = nl80211_policy,
4925 .flags = GENL_ADMIN_PERM,
4926 .doit = nl80211_addset_beacon,
4927 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4928 NL80211_FLAG_NEED_RTNL,
4929 },
4930 {
4931 .cmd = NL80211_CMD_DEL_BEACON,
4932 .policy = nl80211_policy,
4933 .flags = GENL_ADMIN_PERM,
4934 .doit = nl80211_del_beacon,
4935 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4936 NL80211_FLAG_NEED_RTNL,
4937 },
4938 {
4939 .cmd = NL80211_CMD_GET_STATION,
4940 .doit = nl80211_get_station,
4941 .dumpit = nl80211_dump_station,
4942 .policy = nl80211_policy,
4943 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4944 NL80211_FLAG_NEED_RTNL,
4945 },
4946 {
4947 .cmd = NL80211_CMD_SET_STATION,
4948 .doit = nl80211_set_station,
4949 .policy = nl80211_policy,
4950 .flags = GENL_ADMIN_PERM,
4951 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4952 NL80211_FLAG_NEED_RTNL,
4953 },
4954 {
4955 .cmd = NL80211_CMD_NEW_STATION,
4956 .doit = nl80211_new_station,
4957 .policy = nl80211_policy,
4958 .flags = GENL_ADMIN_PERM,
4959 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4960 NL80211_FLAG_NEED_RTNL,
4961 },
4962 {
4963 .cmd = NL80211_CMD_DEL_STATION,
4964 .doit = nl80211_del_station,
4965 .policy = nl80211_policy,
4966 .flags = GENL_ADMIN_PERM,
4967 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4968 NL80211_FLAG_NEED_RTNL,
4969 },
4970 {
4971 .cmd = NL80211_CMD_GET_MPATH,
4972 .doit = nl80211_get_mpath,
4973 .dumpit = nl80211_dump_mpath,
4974 .policy = nl80211_policy,
4975 .flags = GENL_ADMIN_PERM,
4976 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4977 NL80211_FLAG_NEED_RTNL,
4978 },
4979 {
4980 .cmd = NL80211_CMD_SET_MPATH,
4981 .doit = nl80211_set_mpath,
4982 .policy = nl80211_policy,
4983 .flags = GENL_ADMIN_PERM,
4984 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4985 NL80211_FLAG_NEED_RTNL,
4986 },
4987 {
4988 .cmd = NL80211_CMD_NEW_MPATH,
4989 .doit = nl80211_new_mpath,
4990 .policy = nl80211_policy,
4991 .flags = GENL_ADMIN_PERM,
4992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4993 NL80211_FLAG_NEED_RTNL,
4994 },
4995 {
4996 .cmd = NL80211_CMD_DEL_MPATH,
4997 .doit = nl80211_del_mpath,
4998 .policy = nl80211_policy,
4999 .flags = GENL_ADMIN_PERM,
5000 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5001 NL80211_FLAG_NEED_RTNL,
5002 },
5003 {
5004 .cmd = NL80211_CMD_SET_BSS,
5005 .doit = nl80211_set_bss,
5006 .policy = nl80211_policy,
5007 .flags = GENL_ADMIN_PERM,
5008 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5009 NL80211_FLAG_NEED_RTNL,
5010 },
5011 {
5012 .cmd = NL80211_CMD_GET_REG,
5013 .doit = nl80211_get_reg,
5014 .policy = nl80211_policy,
5015 /* can be retrieved by unprivileged users */
5016 },
5017 {
5018 .cmd = NL80211_CMD_SET_REG,
5019 .doit = nl80211_set_reg,
5020 .policy = nl80211_policy,
5021 .flags = GENL_ADMIN_PERM,
5022 },
5023 {
5024 .cmd = NL80211_CMD_REQ_SET_REG,
5025 .doit = nl80211_req_set_reg,
5026 .policy = nl80211_policy,
5027 .flags = GENL_ADMIN_PERM,
5028 },
5029 {
5030 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5031 .doit = nl80211_get_mesh_config,
5032 .policy = nl80211_policy,
5033 /* can be retrieved by unprivileged users */
5034 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5035 NL80211_FLAG_NEED_RTNL,
5036 },
5037 {
5038 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5039 .doit = nl80211_update_mesh_config,
5040 .policy = nl80211_policy,
5041 .flags = GENL_ADMIN_PERM,
5042 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5043 NL80211_FLAG_NEED_RTNL,
5044 },
5045 {
5046 .cmd = NL80211_CMD_TRIGGER_SCAN,
5047 .doit = nl80211_trigger_scan,
5048 .policy = nl80211_policy,
5049 .flags = GENL_ADMIN_PERM,
5050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5051 NL80211_FLAG_NEED_RTNL,
5052 },
5053 {
5054 .cmd = NL80211_CMD_GET_SCAN,
5055 .policy = nl80211_policy,
5056 .dumpit = nl80211_dump_scan,
5057 },
5058 {
5059 .cmd = NL80211_CMD_AUTHENTICATE,
5060 .doit = nl80211_authenticate,
5061 .policy = nl80211_policy,
5062 .flags = GENL_ADMIN_PERM,
5063 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5064 NL80211_FLAG_NEED_RTNL,
5065 },
5066 {
5067 .cmd = NL80211_CMD_ASSOCIATE,
5068 .doit = nl80211_associate,
5069 .policy = nl80211_policy,
5070 .flags = GENL_ADMIN_PERM,
5071 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5072 NL80211_FLAG_NEED_RTNL,
5073 },
5074 {
5075 .cmd = NL80211_CMD_DEAUTHENTICATE,
5076 .doit = nl80211_deauthenticate,
5077 .policy = nl80211_policy,
5078 .flags = GENL_ADMIN_PERM,
5079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5080 NL80211_FLAG_NEED_RTNL,
5081 },
5082 {
5083 .cmd = NL80211_CMD_DISASSOCIATE,
5084 .doit = nl80211_disassociate,
5085 .policy = nl80211_policy,
5086 .flags = GENL_ADMIN_PERM,
5087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5088 NL80211_FLAG_NEED_RTNL,
5089 },
5090 {
5091 .cmd = NL80211_CMD_JOIN_IBSS,
5092 .doit = nl80211_join_ibss,
5093 .policy = nl80211_policy,
5094 .flags = GENL_ADMIN_PERM,
5095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5096 NL80211_FLAG_NEED_RTNL,
5097 },
5098 {
5099 .cmd = NL80211_CMD_LEAVE_IBSS,
5100 .doit = nl80211_leave_ibss,
5101 .policy = nl80211_policy,
5102 .flags = GENL_ADMIN_PERM,
5103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5104 NL80211_FLAG_NEED_RTNL,
5105 },
5106 #ifdef CONFIG_NL80211_TESTMODE
5107 {
5108 .cmd = NL80211_CMD_TESTMODE,
5109 .doit = nl80211_testmode_do,
5110 .policy = nl80211_policy,
5111 .flags = GENL_ADMIN_PERM,
5112 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5113 NL80211_FLAG_NEED_RTNL,
5114 },
5115 #endif
5116 {
5117 .cmd = NL80211_CMD_CONNECT,
5118 .doit = nl80211_connect,
5119 .policy = nl80211_policy,
5120 .flags = GENL_ADMIN_PERM,
5121 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5122 NL80211_FLAG_NEED_RTNL,
5123 },
5124 {
5125 .cmd = NL80211_CMD_DISCONNECT,
5126 .doit = nl80211_disconnect,
5127 .policy = nl80211_policy,
5128 .flags = GENL_ADMIN_PERM,
5129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5130 NL80211_FLAG_NEED_RTNL,
5131 },
5132 {
5133 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5134 .doit = nl80211_wiphy_netns,
5135 .policy = nl80211_policy,
5136 .flags = GENL_ADMIN_PERM,
5137 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5138 NL80211_FLAG_NEED_RTNL,
5139 },
5140 {
5141 .cmd = NL80211_CMD_GET_SURVEY,
5142 .policy = nl80211_policy,
5143 .dumpit = nl80211_dump_survey,
5144 },
5145 {
5146 .cmd = NL80211_CMD_SET_PMKSA,
5147 .doit = nl80211_setdel_pmksa,
5148 .policy = nl80211_policy,
5149 .flags = GENL_ADMIN_PERM,
5150 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5151 NL80211_FLAG_NEED_RTNL,
5152 },
5153 {
5154 .cmd = NL80211_CMD_DEL_PMKSA,
5155 .doit = nl80211_setdel_pmksa,
5156 .policy = nl80211_policy,
5157 .flags = GENL_ADMIN_PERM,
5158 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5159 NL80211_FLAG_NEED_RTNL,
5160 },
5161 {
5162 .cmd = NL80211_CMD_FLUSH_PMKSA,
5163 .doit = nl80211_flush_pmksa,
5164 .policy = nl80211_policy,
5165 .flags = GENL_ADMIN_PERM,
5166 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5167 NL80211_FLAG_NEED_RTNL,
5168 },
5169 {
5170 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5171 .doit = nl80211_remain_on_channel,
5172 .policy = nl80211_policy,
5173 .flags = GENL_ADMIN_PERM,
5174 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5175 NL80211_FLAG_NEED_RTNL,
5176 },
5177 {
5178 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5179 .doit = nl80211_cancel_remain_on_channel,
5180 .policy = nl80211_policy,
5181 .flags = GENL_ADMIN_PERM,
5182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5183 NL80211_FLAG_NEED_RTNL,
5184 },
5185 {
5186 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5187 .doit = nl80211_set_tx_bitrate_mask,
5188 .policy = nl80211_policy,
5189 .flags = GENL_ADMIN_PERM,
5190 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5191 NL80211_FLAG_NEED_RTNL,
5192 },
5193 {
5194 .cmd = NL80211_CMD_REGISTER_FRAME,
5195 .doit = nl80211_register_mgmt,
5196 .policy = nl80211_policy,
5197 .flags = GENL_ADMIN_PERM,
5198 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5199 NL80211_FLAG_NEED_RTNL,
5200 },
5201 {
5202 .cmd = NL80211_CMD_FRAME,
5203 .doit = nl80211_tx_mgmt,
5204 .policy = nl80211_policy,
5205 .flags = GENL_ADMIN_PERM,
5206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5207 NL80211_FLAG_NEED_RTNL,
5208 },
5209 {
5210 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5211 .doit = nl80211_tx_mgmt_cancel_wait,
5212 .policy = nl80211_policy,
5213 .flags = GENL_ADMIN_PERM,
5214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5215 NL80211_FLAG_NEED_RTNL,
5216 },
5217 {
5218 .cmd = NL80211_CMD_SET_POWER_SAVE,
5219 .doit = nl80211_set_power_save,
5220 .policy = nl80211_policy,
5221 .flags = GENL_ADMIN_PERM,
5222 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5223 NL80211_FLAG_NEED_RTNL,
5224 },
5225 {
5226 .cmd = NL80211_CMD_GET_POWER_SAVE,
5227 .doit = nl80211_get_power_save,
5228 .policy = nl80211_policy,
5229 /* can be retrieved by unprivileged users */
5230 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5231 NL80211_FLAG_NEED_RTNL,
5232 },
5233 {
5234 .cmd = NL80211_CMD_SET_CQM,
5235 .doit = nl80211_set_cqm,
5236 .policy = nl80211_policy,
5237 .flags = GENL_ADMIN_PERM,
5238 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5239 NL80211_FLAG_NEED_RTNL,
5240 },
5241 {
5242 .cmd = NL80211_CMD_SET_CHANNEL,
5243 .doit = nl80211_set_channel,
5244 .policy = nl80211_policy,
5245 .flags = GENL_ADMIN_PERM,
5246 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5247 NL80211_FLAG_NEED_RTNL,
5248 },
5249 {
5250 .cmd = NL80211_CMD_SET_WDS_PEER,
5251 .doit = nl80211_set_wds_peer,
5252 .policy = nl80211_policy,
5253 .flags = GENL_ADMIN_PERM,
5254 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5255 NL80211_FLAG_NEED_RTNL,
5256 },
5257 {
5258 .cmd = NL80211_CMD_JOIN_MESH,
5259 .doit = nl80211_join_mesh,
5260 .policy = nl80211_policy,
5261 .flags = GENL_ADMIN_PERM,
5262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5263 NL80211_FLAG_NEED_RTNL,
5264 },
5265 {
5266 .cmd = NL80211_CMD_LEAVE_MESH,
5267 .doit = nl80211_leave_mesh,
5268 .policy = nl80211_policy,
5269 .flags = GENL_ADMIN_PERM,
5270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5271 NL80211_FLAG_NEED_RTNL,
5272 },
5273 };
5274
5275 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5276 .name = "mlme",
5277 };
5278
5279 /* multicast groups */
5280 static struct genl_multicast_group nl80211_config_mcgrp = {
5281 .name = "config",
5282 };
5283 static struct genl_multicast_group nl80211_scan_mcgrp = {
5284 .name = "scan",
5285 };
5286 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5287 .name = "regulatory",
5288 };
5289
5290 /* notification functions */
5291
5292 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5293 {
5294 struct sk_buff *msg;
5295
5296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5297 if (!msg)
5298 return;
5299
5300 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5301 nlmsg_free(msg);
5302 return;
5303 }
5304
5305 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5306 nl80211_config_mcgrp.id, GFP_KERNEL);
5307 }
5308
5309 static int nl80211_add_scan_req(struct sk_buff *msg,
5310 struct cfg80211_registered_device *rdev)
5311 {
5312 struct cfg80211_scan_request *req = rdev->scan_req;
5313 struct nlattr *nest;
5314 int i;
5315
5316 ASSERT_RDEV_LOCK(rdev);
5317
5318 if (WARN_ON(!req))
5319 return 0;
5320
5321 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5322 if (!nest)
5323 goto nla_put_failure;
5324 for (i = 0; i < req->n_ssids; i++)
5325 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5326 nla_nest_end(msg, nest);
5327
5328 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5329 if (!nest)
5330 goto nla_put_failure;
5331 for (i = 0; i < req->n_channels; i++)
5332 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5333 nla_nest_end(msg, nest);
5334
5335 if (req->ie)
5336 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5337
5338 return 0;
5339 nla_put_failure:
5340 return -ENOBUFS;
5341 }
5342
5343 static int nl80211_send_scan_msg(struct sk_buff *msg,
5344 struct cfg80211_registered_device *rdev,
5345 struct net_device *netdev,
5346 u32 pid, u32 seq, int flags,
5347 u32 cmd)
5348 {
5349 void *hdr;
5350
5351 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5352 if (!hdr)
5353 return -1;
5354
5355 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5356 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5357
5358 /* ignore errors and send incomplete event anyway */
5359 nl80211_add_scan_req(msg, rdev);
5360
5361 return genlmsg_end(msg, hdr);
5362
5363 nla_put_failure:
5364 genlmsg_cancel(msg, hdr);
5365 return -EMSGSIZE;
5366 }
5367
5368 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5369 struct net_device *netdev)
5370 {
5371 struct sk_buff *msg;
5372
5373 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5374 if (!msg)
5375 return;
5376
5377 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5378 NL80211_CMD_TRIGGER_SCAN) < 0) {
5379 nlmsg_free(msg);
5380 return;
5381 }
5382
5383 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5384 nl80211_scan_mcgrp.id, GFP_KERNEL);
5385 }
5386
5387 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5388 struct net_device *netdev)
5389 {
5390 struct sk_buff *msg;
5391
5392 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5393 if (!msg)
5394 return;
5395
5396 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5397 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5398 nlmsg_free(msg);
5399 return;
5400 }
5401
5402 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5403 nl80211_scan_mcgrp.id, GFP_KERNEL);
5404 }
5405
5406 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5407 struct net_device *netdev)
5408 {
5409 struct sk_buff *msg;
5410
5411 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5412 if (!msg)
5413 return;
5414
5415 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5416 NL80211_CMD_SCAN_ABORTED) < 0) {
5417 nlmsg_free(msg);
5418 return;
5419 }
5420
5421 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5422 nl80211_scan_mcgrp.id, GFP_KERNEL);
5423 }
5424
5425 /*
5426 * This can happen on global regulatory changes or device specific settings
5427 * based on custom world regulatory domains.
5428 */
5429 void nl80211_send_reg_change_event(struct regulatory_request *request)
5430 {
5431 struct sk_buff *msg;
5432 void *hdr;
5433
5434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5435 if (!msg)
5436 return;
5437
5438 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5439 if (!hdr) {
5440 nlmsg_free(msg);
5441 return;
5442 }
5443
5444 /* Userspace can always count this one always being set */
5445 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5446
5447 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5448 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5449 NL80211_REGDOM_TYPE_WORLD);
5450 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5451 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5452 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5453 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5454 request->intersect)
5455 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5456 NL80211_REGDOM_TYPE_INTERSECTION);
5457 else {
5458 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5459 NL80211_REGDOM_TYPE_COUNTRY);
5460 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5461 }
5462
5463 if (wiphy_idx_valid(request->wiphy_idx))
5464 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5465
5466 if (genlmsg_end(msg, hdr) < 0) {
5467 nlmsg_free(msg);
5468 return;
5469 }
5470
5471 rcu_read_lock();
5472 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5473 GFP_ATOMIC);
5474 rcu_read_unlock();
5475
5476 return;
5477
5478 nla_put_failure:
5479 genlmsg_cancel(msg, hdr);
5480 nlmsg_free(msg);
5481 }
5482
5483 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5484 struct net_device *netdev,
5485 const u8 *buf, size_t len,
5486 enum nl80211_commands cmd, gfp_t gfp)
5487 {
5488 struct sk_buff *msg;
5489 void *hdr;
5490
5491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5492 if (!msg)
5493 return;
5494
5495 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5496 if (!hdr) {
5497 nlmsg_free(msg);
5498 return;
5499 }
5500
5501 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5502 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5503 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5504
5505 if (genlmsg_end(msg, hdr) < 0) {
5506 nlmsg_free(msg);
5507 return;
5508 }
5509
5510 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5511 nl80211_mlme_mcgrp.id, gfp);
5512 return;
5513
5514 nla_put_failure:
5515 genlmsg_cancel(msg, hdr);
5516 nlmsg_free(msg);
5517 }
5518
5519 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5520 struct net_device *netdev, const u8 *buf,
5521 size_t len, gfp_t gfp)
5522 {
5523 nl80211_send_mlme_event(rdev, netdev, buf, len,
5524 NL80211_CMD_AUTHENTICATE, gfp);
5525 }
5526
5527 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5528 struct net_device *netdev, const u8 *buf,
5529 size_t len, gfp_t gfp)
5530 {
5531 nl80211_send_mlme_event(rdev, netdev, buf, len,
5532 NL80211_CMD_ASSOCIATE, gfp);
5533 }
5534
5535 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5536 struct net_device *netdev, const u8 *buf,
5537 size_t len, gfp_t gfp)
5538 {
5539 nl80211_send_mlme_event(rdev, netdev, buf, len,
5540 NL80211_CMD_DEAUTHENTICATE, gfp);
5541 }
5542
5543 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5544 struct net_device *netdev, const u8 *buf,
5545 size_t len, gfp_t gfp)
5546 {
5547 nl80211_send_mlme_event(rdev, netdev, buf, len,
5548 NL80211_CMD_DISASSOCIATE, gfp);
5549 }
5550
5551 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
5552 struct net_device *netdev, const u8 *buf,
5553 size_t len, gfp_t gfp)
5554 {
5555 nl80211_send_mlme_event(rdev, netdev, buf, len,
5556 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
5557 }
5558
5559 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
5560 struct net_device *netdev, const u8 *buf,
5561 size_t len, gfp_t gfp)
5562 {
5563 nl80211_send_mlme_event(rdev, netdev, buf, len,
5564 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
5565 }
5566
5567 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5568 struct net_device *netdev, int cmd,
5569 const u8 *addr, gfp_t gfp)
5570 {
5571 struct sk_buff *msg;
5572 void *hdr;
5573
5574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5575 if (!msg)
5576 return;
5577
5578 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5579 if (!hdr) {
5580 nlmsg_free(msg);
5581 return;
5582 }
5583
5584 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5585 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5586 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5587 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5588
5589 if (genlmsg_end(msg, hdr) < 0) {
5590 nlmsg_free(msg);
5591 return;
5592 }
5593
5594 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5595 nl80211_mlme_mcgrp.id, gfp);
5596 return;
5597
5598 nla_put_failure:
5599 genlmsg_cancel(msg, hdr);
5600 nlmsg_free(msg);
5601 }
5602
5603 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5604 struct net_device *netdev, const u8 *addr,
5605 gfp_t gfp)
5606 {
5607 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5608 addr, gfp);
5609 }
5610
5611 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5612 struct net_device *netdev, const u8 *addr,
5613 gfp_t gfp)
5614 {
5615 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5616 addr, gfp);
5617 }
5618
5619 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5620 struct net_device *netdev, const u8 *bssid,
5621 const u8 *req_ie, size_t req_ie_len,
5622 const u8 *resp_ie, size_t resp_ie_len,
5623 u16 status, gfp_t gfp)
5624 {
5625 struct sk_buff *msg;
5626 void *hdr;
5627
5628 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5629 if (!msg)
5630 return;
5631
5632 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5633 if (!hdr) {
5634 nlmsg_free(msg);
5635 return;
5636 }
5637
5638 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5640 if (bssid)
5641 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5642 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5643 if (req_ie)
5644 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5645 if (resp_ie)
5646 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5647
5648 if (genlmsg_end(msg, hdr) < 0) {
5649 nlmsg_free(msg);
5650 return;
5651 }
5652
5653 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5654 nl80211_mlme_mcgrp.id, gfp);
5655 return;
5656
5657 nla_put_failure:
5658 genlmsg_cancel(msg, hdr);
5659 nlmsg_free(msg);
5660
5661 }
5662
5663 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5664 struct net_device *netdev, const u8 *bssid,
5665 const u8 *req_ie, size_t req_ie_len,
5666 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5667 {
5668 struct sk_buff *msg;
5669 void *hdr;
5670
5671 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5672 if (!msg)
5673 return;
5674
5675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5676 if (!hdr) {
5677 nlmsg_free(msg);
5678 return;
5679 }
5680
5681 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5682 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5683 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5684 if (req_ie)
5685 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5686 if (resp_ie)
5687 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5688
5689 if (genlmsg_end(msg, hdr) < 0) {
5690 nlmsg_free(msg);
5691 return;
5692 }
5693
5694 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5695 nl80211_mlme_mcgrp.id, gfp);
5696 return;
5697
5698 nla_put_failure:
5699 genlmsg_cancel(msg, hdr);
5700 nlmsg_free(msg);
5701
5702 }
5703
5704 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5705 struct net_device *netdev, u16 reason,
5706 const u8 *ie, size_t ie_len, bool from_ap)
5707 {
5708 struct sk_buff *msg;
5709 void *hdr;
5710
5711 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5712 if (!msg)
5713 return;
5714
5715 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5716 if (!hdr) {
5717 nlmsg_free(msg);
5718 return;
5719 }
5720
5721 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5723 if (from_ap && reason)
5724 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5725 if (from_ap)
5726 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5727 if (ie)
5728 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5729
5730 if (genlmsg_end(msg, hdr) < 0) {
5731 nlmsg_free(msg);
5732 return;
5733 }
5734
5735 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5736 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5737 return;
5738
5739 nla_put_failure:
5740 genlmsg_cancel(msg, hdr);
5741 nlmsg_free(msg);
5742
5743 }
5744
5745 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5746 struct net_device *netdev, const u8 *bssid,
5747 gfp_t gfp)
5748 {
5749 struct sk_buff *msg;
5750 void *hdr;
5751
5752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5753 if (!msg)
5754 return;
5755
5756 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5757 if (!hdr) {
5758 nlmsg_free(msg);
5759 return;
5760 }
5761
5762 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5763 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5764 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5765
5766 if (genlmsg_end(msg, hdr) < 0) {
5767 nlmsg_free(msg);
5768 return;
5769 }
5770
5771 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5772 nl80211_mlme_mcgrp.id, gfp);
5773 return;
5774
5775 nla_put_failure:
5776 genlmsg_cancel(msg, hdr);
5777 nlmsg_free(msg);
5778 }
5779
5780 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5781 struct net_device *netdev, const u8 *addr,
5782 enum nl80211_key_type key_type, int key_id,
5783 const u8 *tsc, gfp_t gfp)
5784 {
5785 struct sk_buff *msg;
5786 void *hdr;
5787
5788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5789 if (!msg)
5790 return;
5791
5792 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5793 if (!hdr) {
5794 nlmsg_free(msg);
5795 return;
5796 }
5797
5798 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5799 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5800 if (addr)
5801 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5802 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5803 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5804 if (tsc)
5805 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5806
5807 if (genlmsg_end(msg, hdr) < 0) {
5808 nlmsg_free(msg);
5809 return;
5810 }
5811
5812 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5813 nl80211_mlme_mcgrp.id, gfp);
5814 return;
5815
5816 nla_put_failure:
5817 genlmsg_cancel(msg, hdr);
5818 nlmsg_free(msg);
5819 }
5820
5821 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5822 struct ieee80211_channel *channel_before,
5823 struct ieee80211_channel *channel_after)
5824 {
5825 struct sk_buff *msg;
5826 void *hdr;
5827 struct nlattr *nl_freq;
5828
5829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5830 if (!msg)
5831 return;
5832
5833 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5834 if (!hdr) {
5835 nlmsg_free(msg);
5836 return;
5837 }
5838
5839 /*
5840 * Since we are applying the beacon hint to a wiphy we know its
5841 * wiphy_idx is valid
5842 */
5843 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5844
5845 /* Before */
5846 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5847 if (!nl_freq)
5848 goto nla_put_failure;
5849 if (nl80211_msg_put_channel(msg, channel_before))
5850 goto nla_put_failure;
5851 nla_nest_end(msg, nl_freq);
5852
5853 /* After */
5854 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5855 if (!nl_freq)
5856 goto nla_put_failure;
5857 if (nl80211_msg_put_channel(msg, channel_after))
5858 goto nla_put_failure;
5859 nla_nest_end(msg, nl_freq);
5860
5861 if (genlmsg_end(msg, hdr) < 0) {
5862 nlmsg_free(msg);
5863 return;
5864 }
5865
5866 rcu_read_lock();
5867 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5868 GFP_ATOMIC);
5869 rcu_read_unlock();
5870
5871 return;
5872
5873 nla_put_failure:
5874 genlmsg_cancel(msg, hdr);
5875 nlmsg_free(msg);
5876 }
5877
5878 static void nl80211_send_remain_on_chan_event(
5879 int cmd, struct cfg80211_registered_device *rdev,
5880 struct net_device *netdev, u64 cookie,
5881 struct ieee80211_channel *chan,
5882 enum nl80211_channel_type channel_type,
5883 unsigned int duration, gfp_t gfp)
5884 {
5885 struct sk_buff *msg;
5886 void *hdr;
5887
5888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5889 if (!msg)
5890 return;
5891
5892 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5893 if (!hdr) {
5894 nlmsg_free(msg);
5895 return;
5896 }
5897
5898 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5899 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5900 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5901 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5902 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5903
5904 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5905 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5906
5907 if (genlmsg_end(msg, hdr) < 0) {
5908 nlmsg_free(msg);
5909 return;
5910 }
5911
5912 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5913 nl80211_mlme_mcgrp.id, gfp);
5914 return;
5915
5916 nla_put_failure:
5917 genlmsg_cancel(msg, hdr);
5918 nlmsg_free(msg);
5919 }
5920
5921 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5922 struct net_device *netdev, u64 cookie,
5923 struct ieee80211_channel *chan,
5924 enum nl80211_channel_type channel_type,
5925 unsigned int duration, gfp_t gfp)
5926 {
5927 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5928 rdev, netdev, cookie, chan,
5929 channel_type, duration, gfp);
5930 }
5931
5932 void nl80211_send_remain_on_channel_cancel(
5933 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5934 u64 cookie, struct ieee80211_channel *chan,
5935 enum nl80211_channel_type channel_type, gfp_t gfp)
5936 {
5937 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5938 rdev, netdev, cookie, chan,
5939 channel_type, 0, gfp);
5940 }
5941
5942 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5943 struct net_device *dev, const u8 *mac_addr,
5944 struct station_info *sinfo, gfp_t gfp)
5945 {
5946 struct sk_buff *msg;
5947
5948 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5949 if (!msg)
5950 return;
5951
5952 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5953 nlmsg_free(msg);
5954 return;
5955 }
5956
5957 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5958 nl80211_mlme_mcgrp.id, gfp);
5959 }
5960
5961 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5962 struct net_device *netdev, u32 nlpid,
5963 int freq, const u8 *buf, size_t len, gfp_t gfp)
5964 {
5965 struct sk_buff *msg;
5966 void *hdr;
5967 int err;
5968
5969 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5970 if (!msg)
5971 return -ENOMEM;
5972
5973 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
5974 if (!hdr) {
5975 nlmsg_free(msg);
5976 return -ENOMEM;
5977 }
5978
5979 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5980 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5981 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5982 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5983
5984 err = genlmsg_end(msg, hdr);
5985 if (err < 0) {
5986 nlmsg_free(msg);
5987 return err;
5988 }
5989
5990 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5991 if (err < 0)
5992 return err;
5993 return 0;
5994
5995 nla_put_failure:
5996 genlmsg_cancel(msg, hdr);
5997 nlmsg_free(msg);
5998 return -ENOBUFS;
5999 }
6000
6001 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6002 struct net_device *netdev, u64 cookie,
6003 const u8 *buf, size_t len, bool ack,
6004 gfp_t gfp)
6005 {
6006 struct sk_buff *msg;
6007 void *hdr;
6008
6009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6010 if (!msg)
6011 return;
6012
6013 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6014 if (!hdr) {
6015 nlmsg_free(msg);
6016 return;
6017 }
6018
6019 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6020 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6021 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6022 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6023 if (ack)
6024 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6025
6026 if (genlmsg_end(msg, hdr) < 0) {
6027 nlmsg_free(msg);
6028 return;
6029 }
6030
6031 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6032 return;
6033
6034 nla_put_failure:
6035 genlmsg_cancel(msg, hdr);
6036 nlmsg_free(msg);
6037 }
6038
6039 void
6040 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6041 struct net_device *netdev,
6042 enum nl80211_cqm_rssi_threshold_event rssi_event,
6043 gfp_t gfp)
6044 {
6045 struct sk_buff *msg;
6046 struct nlattr *pinfoattr;
6047 void *hdr;
6048
6049 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6050 if (!msg)
6051 return;
6052
6053 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6054 if (!hdr) {
6055 nlmsg_free(msg);
6056 return;
6057 }
6058
6059 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6060 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6061
6062 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6063 if (!pinfoattr)
6064 goto nla_put_failure;
6065
6066 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6067 rssi_event);
6068
6069 nla_nest_end(msg, pinfoattr);
6070
6071 if (genlmsg_end(msg, hdr) < 0) {
6072 nlmsg_free(msg);
6073 return;
6074 }
6075
6076 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6077 nl80211_mlme_mcgrp.id, gfp);
6078 return;
6079
6080 nla_put_failure:
6081 genlmsg_cancel(msg, hdr);
6082 nlmsg_free(msg);
6083 }
6084
6085 void
6086 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6087 struct net_device *netdev, const u8 *peer,
6088 u32 num_packets, gfp_t gfp)
6089 {
6090 struct sk_buff *msg;
6091 struct nlattr *pinfoattr;
6092 void *hdr;
6093
6094 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6095 if (!msg)
6096 return;
6097
6098 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6099 if (!hdr) {
6100 nlmsg_free(msg);
6101 return;
6102 }
6103
6104 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6105 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6106 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6107
6108 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6109 if (!pinfoattr)
6110 goto nla_put_failure;
6111
6112 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6113
6114 nla_nest_end(msg, pinfoattr);
6115
6116 if (genlmsg_end(msg, hdr) < 0) {
6117 nlmsg_free(msg);
6118 return;
6119 }
6120
6121 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6122 nl80211_mlme_mcgrp.id, gfp);
6123 return;
6124
6125 nla_put_failure:
6126 genlmsg_cancel(msg, hdr);
6127 nlmsg_free(msg);
6128 }
6129
6130 static int nl80211_netlink_notify(struct notifier_block * nb,
6131 unsigned long state,
6132 void *_notify)
6133 {
6134 struct netlink_notify *notify = _notify;
6135 struct cfg80211_registered_device *rdev;
6136 struct wireless_dev *wdev;
6137
6138 if (state != NETLINK_URELEASE)
6139 return NOTIFY_DONE;
6140
6141 rcu_read_lock();
6142
6143 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6144 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6145 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6146
6147 rcu_read_unlock();
6148
6149 return NOTIFY_DONE;
6150 }
6151
6152 static struct notifier_block nl80211_netlink_notifier = {
6153 .notifier_call = nl80211_netlink_notify,
6154 };
6155
6156 /* initialisation/exit functions */
6157
6158 int nl80211_init(void)
6159 {
6160 int err;
6161
6162 err = genl_register_family_with_ops(&nl80211_fam,
6163 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6164 if (err)
6165 return err;
6166
6167 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6168 if (err)
6169 goto err_out;
6170
6171 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6172 if (err)
6173 goto err_out;
6174
6175 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6176 if (err)
6177 goto err_out;
6178
6179 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6180 if (err)
6181 goto err_out;
6182
6183 #ifdef CONFIG_NL80211_TESTMODE
6184 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6185 if (err)
6186 goto err_out;
6187 #endif
6188
6189 err = netlink_register_notifier(&nl80211_netlink_notifier);
6190 if (err)
6191 goto err_out;
6192
6193 return 0;
6194 err_out:
6195 genl_unregister_family(&nl80211_fam);
6196 return err;
6197 }
6198
6199 void nl80211_exit(void)
6200 {
6201 netlink_unregister_notifier(&nl80211_netlink_notifier);
6202 genl_unregister_family(&nl80211_fam);
6203 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree