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eCryptfs: Allow 2 scatterlist entries for encrypted filenames
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob47d9a875612db1583122805f137f0365e5136ddd
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 int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1964 int flags, struct net_device *dev,
1965 const u8 *mac_addr, struct station_info *sinfo)
1966 {
1967 void *hdr;
1968 struct nlattr *sinfoattr, *txrate;
1969 u16 bitrate;
1970
1971 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1972 if (!hdr)
1973 return -1;
1974
1975 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1976 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1977
1978 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
1979
1980 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1981 if (!sinfoattr)
1982 goto nla_put_failure;
1983 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1984 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1985 sinfo->inactive_time);
1986 if (sinfo->filled & STATION_INFO_RX_BYTES)
1987 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1988 sinfo->rx_bytes);
1989 if (sinfo->filled & STATION_INFO_TX_BYTES)
1990 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1991 sinfo->tx_bytes);
1992 if (sinfo->filled & STATION_INFO_LLID)
1993 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1994 sinfo->llid);
1995 if (sinfo->filled & STATION_INFO_PLID)
1996 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1997 sinfo->plid);
1998 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1999 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2000 sinfo->plink_state);
2001 if (sinfo->filled & STATION_INFO_SIGNAL)
2002 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2003 sinfo->signal);
2004 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2005 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2006 sinfo->signal_avg);
2007 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2008 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
2009 if (!txrate)
2010 goto nla_put_failure;
2011
2012 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2013 bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
2014 if (bitrate > 0)
2015 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2016
2017 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
2018 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
2019 sinfo->txrate.mcs);
2020 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2021 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2022 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
2023 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2024
2025 nla_nest_end(msg, txrate);
2026 }
2027 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2028 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2029 sinfo->rx_packets);
2030 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2031 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2032 sinfo->tx_packets);
2033 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2034 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2035 sinfo->tx_retries);
2036 if (sinfo->filled & STATION_INFO_TX_FAILED)
2037 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2038 sinfo->tx_failed);
2039 nla_nest_end(msg, sinfoattr);
2040
2041 return genlmsg_end(msg, hdr);
2042
2043 nla_put_failure:
2044 genlmsg_cancel(msg, hdr);
2045 return -EMSGSIZE;
2046 }
2047
2048 static int nl80211_dump_station(struct sk_buff *skb,
2049 struct netlink_callback *cb)
2050 {
2051 struct station_info sinfo;
2052 struct cfg80211_registered_device *dev;
2053 struct net_device *netdev;
2054 u8 mac_addr[ETH_ALEN];
2055 int sta_idx = cb->args[1];
2056 int err;
2057
2058 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2059 if (err)
2060 return err;
2061
2062 if (!dev->ops->dump_station) {
2063 err = -EOPNOTSUPP;
2064 goto out_err;
2065 }
2066
2067 while (1) {
2068 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2069 mac_addr, &sinfo);
2070 if (err == -ENOENT)
2071 break;
2072 if (err)
2073 goto out_err;
2074
2075 if (nl80211_send_station(skb,
2076 NETLINK_CB(cb->skb).pid,
2077 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2078 netdev, mac_addr,
2079 &sinfo) < 0)
2080 goto out;
2081
2082 sta_idx++;
2083 }
2084
2085
2086 out:
2087 cb->args[1] = sta_idx;
2088 err = skb->len;
2089 out_err:
2090 nl80211_finish_netdev_dump(dev);
2091
2092 return err;
2093 }
2094
2095 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2096 {
2097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2098 struct net_device *dev = info->user_ptr[1];
2099 struct station_info sinfo;
2100 struct sk_buff *msg;
2101 u8 *mac_addr = NULL;
2102 int err;
2103
2104 memset(&sinfo, 0, sizeof(sinfo));
2105
2106 if (!info->attrs[NL80211_ATTR_MAC])
2107 return -EINVAL;
2108
2109 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2110
2111 if (!rdev->ops->get_station)
2112 return -EOPNOTSUPP;
2113
2114 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2115 if (err)
2116 return err;
2117
2118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2119 if (!msg)
2120 return -ENOMEM;
2121
2122 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2123 dev, mac_addr, &sinfo) < 0) {
2124 nlmsg_free(msg);
2125 return -ENOBUFS;
2126 }
2127
2128 return genlmsg_reply(msg, info);
2129 }
2130
2131 /*
2132 * Get vlan interface making sure it is running and on the right wiphy.
2133 */
2134 static int get_vlan(struct genl_info *info,
2135 struct cfg80211_registered_device *rdev,
2136 struct net_device **vlan)
2137 {
2138 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2139 *vlan = NULL;
2140
2141 if (vlanattr) {
2142 *vlan = dev_get_by_index(genl_info_net(info),
2143 nla_get_u32(vlanattr));
2144 if (!*vlan)
2145 return -ENODEV;
2146 if (!(*vlan)->ieee80211_ptr)
2147 return -EINVAL;
2148 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2149 return -EINVAL;
2150 if (!netif_running(*vlan))
2151 return -ENETDOWN;
2152 }
2153 return 0;
2154 }
2155
2156 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2157 {
2158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2159 int err;
2160 struct net_device *dev = info->user_ptr[1];
2161 struct station_parameters params;
2162 u8 *mac_addr = NULL;
2163
2164 memset(&params, 0, sizeof(params));
2165
2166 params.listen_interval = -1;
2167
2168 if (info->attrs[NL80211_ATTR_STA_AID])
2169 return -EINVAL;
2170
2171 if (!info->attrs[NL80211_ATTR_MAC])
2172 return -EINVAL;
2173
2174 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2175
2176 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2177 params.supported_rates =
2178 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2179 params.supported_rates_len =
2180 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2181 }
2182
2183 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2184 params.listen_interval =
2185 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2186
2187 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2188 params.ht_capa =
2189 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2190
2191 if (parse_station_flags(info, &params))
2192 return -EINVAL;
2193
2194 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2195 params.plink_action =
2196 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2197
2198 err = get_vlan(info, rdev, &params.vlan);
2199 if (err)
2200 goto out;
2201
2202 /* validate settings */
2203 err = 0;
2204
2205 switch (dev->ieee80211_ptr->iftype) {
2206 case NL80211_IFTYPE_AP:
2207 case NL80211_IFTYPE_AP_VLAN:
2208 case NL80211_IFTYPE_P2P_GO:
2209 /* disallow mesh-specific things */
2210 if (params.plink_action)
2211 err = -EINVAL;
2212 break;
2213 case NL80211_IFTYPE_P2P_CLIENT:
2214 case NL80211_IFTYPE_STATION:
2215 /* disallow everything but AUTHORIZED flag */
2216 if (params.plink_action)
2217 err = -EINVAL;
2218 if (params.vlan)
2219 err = -EINVAL;
2220 if (params.supported_rates)
2221 err = -EINVAL;
2222 if (params.ht_capa)
2223 err = -EINVAL;
2224 if (params.listen_interval >= 0)
2225 err = -EINVAL;
2226 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2227 err = -EINVAL;
2228 break;
2229 case NL80211_IFTYPE_MESH_POINT:
2230 /* disallow things mesh doesn't support */
2231 if (params.vlan)
2232 err = -EINVAL;
2233 if (params.ht_capa)
2234 err = -EINVAL;
2235 if (params.listen_interval >= 0)
2236 err = -EINVAL;
2237 if (params.supported_rates)
2238 err = -EINVAL;
2239 if (params.sta_flags_mask)
2240 err = -EINVAL;
2241 break;
2242 default:
2243 err = -EINVAL;
2244 }
2245
2246 if (err)
2247 goto out;
2248
2249 if (!rdev->ops->change_station) {
2250 err = -EOPNOTSUPP;
2251 goto out;
2252 }
2253
2254 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2255
2256 out:
2257 if (params.vlan)
2258 dev_put(params.vlan);
2259
2260 return err;
2261 }
2262
2263 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2264 {
2265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2266 int err;
2267 struct net_device *dev = info->user_ptr[1];
2268 struct station_parameters params;
2269 u8 *mac_addr = NULL;
2270
2271 memset(&params, 0, sizeof(params));
2272
2273 if (!info->attrs[NL80211_ATTR_MAC])
2274 return -EINVAL;
2275
2276 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2277 return -EINVAL;
2278
2279 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2280 return -EINVAL;
2281
2282 if (!info->attrs[NL80211_ATTR_STA_AID])
2283 return -EINVAL;
2284
2285 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2286 params.supported_rates =
2287 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2288 params.supported_rates_len =
2289 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2290 params.listen_interval =
2291 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2292
2293 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2294 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2295 return -EINVAL;
2296
2297 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2298 params.ht_capa =
2299 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2300
2301 if (parse_station_flags(info, &params))
2302 return -EINVAL;
2303
2304 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2305 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2306 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2307 return -EINVAL;
2308
2309 err = get_vlan(info, rdev, &params.vlan);
2310 if (err)
2311 goto out;
2312
2313 /* validate settings */
2314 err = 0;
2315
2316 if (!rdev->ops->add_station) {
2317 err = -EOPNOTSUPP;
2318 goto out;
2319 }
2320
2321 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2322
2323 out:
2324 if (params.vlan)
2325 dev_put(params.vlan);
2326 return err;
2327 }
2328
2329 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2330 {
2331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2332 struct net_device *dev = info->user_ptr[1];
2333 u8 *mac_addr = NULL;
2334
2335 if (info->attrs[NL80211_ATTR_MAC])
2336 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2337
2338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2339 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2340 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2341 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2342 return -EINVAL;
2343
2344 if (!rdev->ops->del_station)
2345 return -EOPNOTSUPP;
2346
2347 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2348 }
2349
2350 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2351 int flags, struct net_device *dev,
2352 u8 *dst, u8 *next_hop,
2353 struct mpath_info *pinfo)
2354 {
2355 void *hdr;
2356 struct nlattr *pinfoattr;
2357
2358 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2359 if (!hdr)
2360 return -1;
2361
2362 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2363 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2364 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2365
2366 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2367
2368 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2369 if (!pinfoattr)
2370 goto nla_put_failure;
2371 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2372 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2373 pinfo->frame_qlen);
2374 if (pinfo->filled & MPATH_INFO_SN)
2375 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2376 pinfo->sn);
2377 if (pinfo->filled & MPATH_INFO_METRIC)
2378 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2379 pinfo->metric);
2380 if (pinfo->filled & MPATH_INFO_EXPTIME)
2381 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2382 pinfo->exptime);
2383 if (pinfo->filled & MPATH_INFO_FLAGS)
2384 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2385 pinfo->flags);
2386 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2387 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2388 pinfo->discovery_timeout);
2389 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2390 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2391 pinfo->discovery_retries);
2392
2393 nla_nest_end(msg, pinfoattr);
2394
2395 return genlmsg_end(msg, hdr);
2396
2397 nla_put_failure:
2398 genlmsg_cancel(msg, hdr);
2399 return -EMSGSIZE;
2400 }
2401
2402 static int nl80211_dump_mpath(struct sk_buff *skb,
2403 struct netlink_callback *cb)
2404 {
2405 struct mpath_info pinfo;
2406 struct cfg80211_registered_device *dev;
2407 struct net_device *netdev;
2408 u8 dst[ETH_ALEN];
2409 u8 next_hop[ETH_ALEN];
2410 int path_idx = cb->args[1];
2411 int err;
2412
2413 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2414 if (err)
2415 return err;
2416
2417 if (!dev->ops->dump_mpath) {
2418 err = -EOPNOTSUPP;
2419 goto out_err;
2420 }
2421
2422 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2423 err = -EOPNOTSUPP;
2424 goto out_err;
2425 }
2426
2427 while (1) {
2428 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2429 dst, next_hop, &pinfo);
2430 if (err == -ENOENT)
2431 break;
2432 if (err)
2433 goto out_err;
2434
2435 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2436 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2437 netdev, dst, next_hop,
2438 &pinfo) < 0)
2439 goto out;
2440
2441 path_idx++;
2442 }
2443
2444
2445 out:
2446 cb->args[1] = path_idx;
2447 err = skb->len;
2448 out_err:
2449 nl80211_finish_netdev_dump(dev);
2450 return err;
2451 }
2452
2453 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2454 {
2455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2456 int err;
2457 struct net_device *dev = info->user_ptr[1];
2458 struct mpath_info pinfo;
2459 struct sk_buff *msg;
2460 u8 *dst = NULL;
2461 u8 next_hop[ETH_ALEN];
2462
2463 memset(&pinfo, 0, sizeof(pinfo));
2464
2465 if (!info->attrs[NL80211_ATTR_MAC])
2466 return -EINVAL;
2467
2468 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2469
2470 if (!rdev->ops->get_mpath)
2471 return -EOPNOTSUPP;
2472
2473 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2474 return -EOPNOTSUPP;
2475
2476 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2477 if (err)
2478 return err;
2479
2480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2481 if (!msg)
2482 return -ENOMEM;
2483
2484 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2485 dev, dst, next_hop, &pinfo) < 0) {
2486 nlmsg_free(msg);
2487 return -ENOBUFS;
2488 }
2489
2490 return genlmsg_reply(msg, info);
2491 }
2492
2493 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2494 {
2495 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2496 struct net_device *dev = info->user_ptr[1];
2497 u8 *dst = NULL;
2498 u8 *next_hop = NULL;
2499
2500 if (!info->attrs[NL80211_ATTR_MAC])
2501 return -EINVAL;
2502
2503 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2504 return -EINVAL;
2505
2506 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2507 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2508
2509 if (!rdev->ops->change_mpath)
2510 return -EOPNOTSUPP;
2511
2512 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2513 return -EOPNOTSUPP;
2514
2515 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2516 }
2517
2518 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2519 {
2520 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2521 struct net_device *dev = info->user_ptr[1];
2522 u8 *dst = NULL;
2523 u8 *next_hop = NULL;
2524
2525 if (!info->attrs[NL80211_ATTR_MAC])
2526 return -EINVAL;
2527
2528 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2529 return -EINVAL;
2530
2531 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2532 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2533
2534 if (!rdev->ops->add_mpath)
2535 return -EOPNOTSUPP;
2536
2537 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2538 return -EOPNOTSUPP;
2539
2540 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2541 }
2542
2543 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2544 {
2545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2546 struct net_device *dev = info->user_ptr[1];
2547 u8 *dst = NULL;
2548
2549 if (info->attrs[NL80211_ATTR_MAC])
2550 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2551
2552 if (!rdev->ops->del_mpath)
2553 return -EOPNOTSUPP;
2554
2555 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2556 }
2557
2558 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2559 {
2560 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2561 struct net_device *dev = info->user_ptr[1];
2562 struct bss_parameters params;
2563
2564 memset(&params, 0, sizeof(params));
2565 /* default to not changing parameters */
2566 params.use_cts_prot = -1;
2567 params.use_short_preamble = -1;
2568 params.use_short_slot_time = -1;
2569 params.ap_isolate = -1;
2570 params.ht_opmode = -1;
2571
2572 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2573 params.use_cts_prot =
2574 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2575 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2576 params.use_short_preamble =
2577 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2578 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2579 params.use_short_slot_time =
2580 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2581 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2582 params.basic_rates =
2583 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2584 params.basic_rates_len =
2585 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2586 }
2587 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2588 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2589 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2590 params.ht_opmode =
2591 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2592
2593 if (!rdev->ops->change_bss)
2594 return -EOPNOTSUPP;
2595
2596 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2597 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2598 return -EOPNOTSUPP;
2599
2600 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2601 }
2602
2603 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2604 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2605 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2606 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2607 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2608 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2609 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2610 };
2611
2612 static int parse_reg_rule(struct nlattr *tb[],
2613 struct ieee80211_reg_rule *reg_rule)
2614 {
2615 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2616 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2617
2618 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2619 return -EINVAL;
2620 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2621 return -EINVAL;
2622 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2623 return -EINVAL;
2624 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2625 return -EINVAL;
2626 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2627 return -EINVAL;
2628
2629 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2630
2631 freq_range->start_freq_khz =
2632 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2633 freq_range->end_freq_khz =
2634 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2635 freq_range->max_bandwidth_khz =
2636 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2637
2638 power_rule->max_eirp =
2639 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2640
2641 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2642 power_rule->max_antenna_gain =
2643 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2644
2645 return 0;
2646 }
2647
2648 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2649 {
2650 int r;
2651 char *data = NULL;
2652
2653 /*
2654 * You should only get this when cfg80211 hasn't yet initialized
2655 * completely when built-in to the kernel right between the time
2656 * window between nl80211_init() and regulatory_init(), if that is
2657 * even possible.
2658 */
2659 mutex_lock(&cfg80211_mutex);
2660 if (unlikely(!cfg80211_regdomain)) {
2661 mutex_unlock(&cfg80211_mutex);
2662 return -EINPROGRESS;
2663 }
2664 mutex_unlock(&cfg80211_mutex);
2665
2666 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2667 return -EINVAL;
2668
2669 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2670
2671 r = regulatory_hint_user(data);
2672
2673 return r;
2674 }
2675
2676 static int nl80211_get_mesh_config(struct sk_buff *skb,
2677 struct genl_info *info)
2678 {
2679 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2680 struct net_device *dev = info->user_ptr[1];
2681 struct wireless_dev *wdev = dev->ieee80211_ptr;
2682 struct mesh_config cur_params;
2683 int err = 0;
2684 void *hdr;
2685 struct nlattr *pinfoattr;
2686 struct sk_buff *msg;
2687
2688 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2689 return -EOPNOTSUPP;
2690
2691 if (!rdev->ops->get_mesh_config)
2692 return -EOPNOTSUPP;
2693
2694 wdev_lock(wdev);
2695 /* If not connected, get default parameters */
2696 if (!wdev->mesh_id_len)
2697 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2698 else
2699 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2700 &cur_params);
2701 wdev_unlock(wdev);
2702
2703 if (err)
2704 return err;
2705
2706 /* Draw up a netlink message to send back */
2707 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2708 if (!msg)
2709 return -ENOMEM;
2710 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2711 NL80211_CMD_GET_MESH_CONFIG);
2712 if (!hdr)
2713 goto nla_put_failure;
2714 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2715 if (!pinfoattr)
2716 goto nla_put_failure;
2717 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2718 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2719 cur_params.dot11MeshRetryTimeout);
2720 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2721 cur_params.dot11MeshConfirmTimeout);
2722 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2723 cur_params.dot11MeshHoldingTimeout);
2724 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2725 cur_params.dot11MeshMaxPeerLinks);
2726 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2727 cur_params.dot11MeshMaxRetries);
2728 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2729 cur_params.dot11MeshTTL);
2730 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2731 cur_params.element_ttl);
2732 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2733 cur_params.auto_open_plinks);
2734 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2735 cur_params.dot11MeshHWMPmaxPREQretries);
2736 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2737 cur_params.path_refresh_time);
2738 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2739 cur_params.min_discovery_timeout);
2740 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2741 cur_params.dot11MeshHWMPactivePathTimeout);
2742 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2743 cur_params.dot11MeshHWMPpreqMinInterval);
2744 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2745 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2746 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2747 cur_params.dot11MeshHWMPRootMode);
2748 nla_nest_end(msg, pinfoattr);
2749 genlmsg_end(msg, hdr);
2750 return genlmsg_reply(msg, info);
2751
2752 nla_put_failure:
2753 genlmsg_cancel(msg, hdr);
2754 nlmsg_free(msg);
2755 return -ENOBUFS;
2756 }
2757
2758 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2759 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2760 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2761 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2762 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2763 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2764 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2765 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2766 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2767
2768 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2769 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2770 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2771 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2772 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2773 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2774 };
2775
2776 static const struct nla_policy
2777 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2778 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2779 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2780 [NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE] = { .type = NLA_BINARY,
2781 .len = IEEE80211_MAX_DATA_LEN },
2782 };
2783
2784 static int nl80211_parse_mesh_config(struct genl_info *info,
2785 struct mesh_config *cfg,
2786 u32 *mask_out)
2787 {
2788 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2789 u32 mask = 0;
2790
2791 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2792 do {\
2793 if (table[attr_num]) {\
2794 cfg->param = nla_fn(table[attr_num]); \
2795 mask |= (1 << (attr_num - 1)); \
2796 } \
2797 } while (0);\
2798
2799
2800 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2801 return -EINVAL;
2802 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2803 info->attrs[NL80211_ATTR_MESH_CONFIG],
2804 nl80211_meshconf_params_policy))
2805 return -EINVAL;
2806
2807 /* This makes sure that there aren't more than 32 mesh config
2808 * parameters (otherwise our bitfield scheme would not work.) */
2809 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2810
2811 /* Fill in the params struct */
2812 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2813 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2815 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2816 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2817 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2818 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2819 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2820 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2821 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2822 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2823 mask, NL80211_MESHCONF_TTL, nla_get_u8);
2824 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
2825 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
2826 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2827 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2828 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2829 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2830 nla_get_u8);
2831 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2832 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2834 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2835 nla_get_u16);
2836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2837 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2838 nla_get_u32);
2839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2840 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2841 nla_get_u16);
2842 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2843 dot11MeshHWMPnetDiameterTraversalTime,
2844 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2845 nla_get_u16);
2846 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2847 dot11MeshHWMPRootMode, mask,
2848 NL80211_MESHCONF_HWMP_ROOTMODE,
2849 nla_get_u8);
2850 if (mask_out)
2851 *mask_out = mask;
2852
2853 return 0;
2854
2855 #undef FILL_IN_MESH_PARAM_IF_SET
2856 }
2857
2858 static int nl80211_parse_mesh_setup(struct genl_info *info,
2859 struct mesh_setup *setup)
2860 {
2861 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
2862
2863 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
2864 return -EINVAL;
2865 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
2866 info->attrs[NL80211_ATTR_MESH_SETUP],
2867 nl80211_mesh_setup_params_policy))
2868 return -EINVAL;
2869
2870 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
2871 setup->path_sel_proto =
2872 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
2873 IEEE80211_PATH_PROTOCOL_VENDOR :
2874 IEEE80211_PATH_PROTOCOL_HWMP;
2875
2876 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
2877 setup->path_metric =
2878 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
2879 IEEE80211_PATH_METRIC_VENDOR :
2880 IEEE80211_PATH_METRIC_AIRTIME;
2881
2882 if (tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE]) {
2883 struct nlattr *ieattr =
2884 tb[NL80211_MESH_SETUP_VENDOR_PATH_SEL_IE];
2885 if (!is_valid_ie_attr(ieattr))
2886 return -EINVAL;
2887 setup->vendor_ie = nla_data(ieattr);
2888 setup->vendor_ie_len = nla_len(ieattr);
2889 }
2890
2891 return 0;
2892 }
2893
2894 static int nl80211_update_mesh_config(struct sk_buff *skb,
2895 struct genl_info *info)
2896 {
2897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2898 struct net_device *dev = info->user_ptr[1];
2899 struct wireless_dev *wdev = dev->ieee80211_ptr;
2900 struct mesh_config cfg;
2901 u32 mask;
2902 int err;
2903
2904 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2905 return -EOPNOTSUPP;
2906
2907 if (!rdev->ops->update_mesh_config)
2908 return -EOPNOTSUPP;
2909
2910 err = nl80211_parse_mesh_config(info, &cfg, &mask);
2911 if (err)
2912 return err;
2913
2914 wdev_lock(wdev);
2915 if (!wdev->mesh_id_len)
2916 err = -ENOLINK;
2917
2918 if (!err)
2919 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
2920 mask, &cfg);
2921
2922 wdev_unlock(wdev);
2923
2924 return err;
2925 }
2926
2927 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2928 {
2929 struct sk_buff *msg;
2930 void *hdr = NULL;
2931 struct nlattr *nl_reg_rules;
2932 unsigned int i;
2933 int err = -EINVAL;
2934
2935 mutex_lock(&cfg80211_mutex);
2936
2937 if (!cfg80211_regdomain)
2938 goto out;
2939
2940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2941 if (!msg) {
2942 err = -ENOBUFS;
2943 goto out;
2944 }
2945
2946 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2947 NL80211_CMD_GET_REG);
2948 if (!hdr)
2949 goto nla_put_failure;
2950
2951 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2952 cfg80211_regdomain->alpha2);
2953
2954 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2955 if (!nl_reg_rules)
2956 goto nla_put_failure;
2957
2958 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2959 struct nlattr *nl_reg_rule;
2960 const struct ieee80211_reg_rule *reg_rule;
2961 const struct ieee80211_freq_range *freq_range;
2962 const struct ieee80211_power_rule *power_rule;
2963
2964 reg_rule = &cfg80211_regdomain->reg_rules[i];
2965 freq_range = &reg_rule->freq_range;
2966 power_rule = &reg_rule->power_rule;
2967
2968 nl_reg_rule = nla_nest_start(msg, i);
2969 if (!nl_reg_rule)
2970 goto nla_put_failure;
2971
2972 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2973 reg_rule->flags);
2974 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2975 freq_range->start_freq_khz);
2976 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2977 freq_range->end_freq_khz);
2978 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2979 freq_range->max_bandwidth_khz);
2980 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2981 power_rule->max_antenna_gain);
2982 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2983 power_rule->max_eirp);
2984
2985 nla_nest_end(msg, nl_reg_rule);
2986 }
2987
2988 nla_nest_end(msg, nl_reg_rules);
2989
2990 genlmsg_end(msg, hdr);
2991 err = genlmsg_reply(msg, info);
2992 goto out;
2993
2994 nla_put_failure:
2995 genlmsg_cancel(msg, hdr);
2996 nlmsg_free(msg);
2997 err = -EMSGSIZE;
2998 out:
2999 mutex_unlock(&cfg80211_mutex);
3000 return err;
3001 }
3002
3003 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3004 {
3005 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3006 struct nlattr *nl_reg_rule;
3007 char *alpha2 = NULL;
3008 int rem_reg_rules = 0, r = 0;
3009 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3010 struct ieee80211_regdomain *rd = NULL;
3011
3012 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3013 return -EINVAL;
3014
3015 if (!info->attrs[NL80211_ATTR_REG_RULES])
3016 return -EINVAL;
3017
3018 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3019
3020 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3021 rem_reg_rules) {
3022 num_rules++;
3023 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3024 return -EINVAL;
3025 }
3026
3027 mutex_lock(&cfg80211_mutex);
3028
3029 if (!reg_is_valid_request(alpha2)) {
3030 r = -EINVAL;
3031 goto bad_reg;
3032 }
3033
3034 size_of_regd = sizeof(struct ieee80211_regdomain) +
3035 (num_rules * sizeof(struct ieee80211_reg_rule));
3036
3037 rd = kzalloc(size_of_regd, GFP_KERNEL);
3038 if (!rd) {
3039 r = -ENOMEM;
3040 goto bad_reg;
3041 }
3042
3043 rd->n_reg_rules = num_rules;
3044 rd->alpha2[0] = alpha2[0];
3045 rd->alpha2[1] = alpha2[1];
3046
3047 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3048 rem_reg_rules) {
3049 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3050 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3051 reg_rule_policy);
3052 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3053 if (r)
3054 goto bad_reg;
3055
3056 rule_idx++;
3057
3058 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3059 r = -EINVAL;
3060 goto bad_reg;
3061 }
3062 }
3063
3064 BUG_ON(rule_idx != num_rules);
3065
3066 r = set_regdom(rd);
3067
3068 mutex_unlock(&cfg80211_mutex);
3069
3070 return r;
3071
3072 bad_reg:
3073 mutex_unlock(&cfg80211_mutex);
3074 kfree(rd);
3075 return r;
3076 }
3077
3078 static int validate_scan_freqs(struct nlattr *freqs)
3079 {
3080 struct nlattr *attr1, *attr2;
3081 int n_channels = 0, tmp1, tmp2;
3082
3083 nla_for_each_nested(attr1, freqs, tmp1) {
3084 n_channels++;
3085 /*
3086 * Some hardware has a limited channel list for
3087 * scanning, and it is pretty much nonsensical
3088 * to scan for a channel twice, so disallow that
3089 * and don't require drivers to check that the
3090 * channel list they get isn't longer than what
3091 * they can scan, as long as they can scan all
3092 * the channels they registered at once.
3093 */
3094 nla_for_each_nested(attr2, freqs, tmp2)
3095 if (attr1 != attr2 &&
3096 nla_get_u32(attr1) == nla_get_u32(attr2))
3097 return 0;
3098 }
3099
3100 return n_channels;
3101 }
3102
3103 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3104 {
3105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106 struct net_device *dev = info->user_ptr[1];
3107 struct cfg80211_scan_request *request;
3108 struct cfg80211_ssid *ssid;
3109 struct ieee80211_channel *channel;
3110 struct nlattr *attr;
3111 struct wiphy *wiphy;
3112 int err, tmp, n_ssids = 0, n_channels, i;
3113 enum ieee80211_band band;
3114 size_t ie_len;
3115
3116 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3117 return -EINVAL;
3118
3119 wiphy = &rdev->wiphy;
3120
3121 if (!rdev->ops->scan)
3122 return -EOPNOTSUPP;
3123
3124 if (rdev->scan_req)
3125 return -EBUSY;
3126
3127 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3128 n_channels = validate_scan_freqs(
3129 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3130 if (!n_channels)
3131 return -EINVAL;
3132 } else {
3133 n_channels = 0;
3134
3135 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3136 if (wiphy->bands[band])
3137 n_channels += wiphy->bands[band]->n_channels;
3138 }
3139
3140 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3141 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3142 n_ssids++;
3143
3144 if (n_ssids > wiphy->max_scan_ssids)
3145 return -EINVAL;
3146
3147 if (info->attrs[NL80211_ATTR_IE])
3148 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3149 else
3150 ie_len = 0;
3151
3152 if (ie_len > wiphy->max_scan_ie_len)
3153 return -EINVAL;
3154
3155 request = kzalloc(sizeof(*request)
3156 + sizeof(*ssid) * n_ssids
3157 + sizeof(channel) * n_channels
3158 + ie_len, GFP_KERNEL);
3159 if (!request)
3160 return -ENOMEM;
3161
3162 if (n_ssids)
3163 request->ssids = (void *)&request->channels[n_channels];
3164 request->n_ssids = n_ssids;
3165 if (ie_len) {
3166 if (request->ssids)
3167 request->ie = (void *)(request->ssids + n_ssids);
3168 else
3169 request->ie = (void *)(request->channels + n_channels);
3170 }
3171
3172 i = 0;
3173 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3174 /* user specified, bail out if channel not found */
3175 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3176 struct ieee80211_channel *chan;
3177
3178 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3179
3180 if (!chan) {
3181 err = -EINVAL;
3182 goto out_free;
3183 }
3184
3185 /* ignore disabled channels */
3186 if (chan->flags & IEEE80211_CHAN_DISABLED)
3187 continue;
3188
3189 request->channels[i] = chan;
3190 i++;
3191 }
3192 } else {
3193 /* all channels */
3194 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3195 int j;
3196 if (!wiphy->bands[band])
3197 continue;
3198 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3199 struct ieee80211_channel *chan;
3200
3201 chan = &wiphy->bands[band]->channels[j];
3202
3203 if (chan->flags & IEEE80211_CHAN_DISABLED)
3204 continue;
3205
3206 request->channels[i] = chan;
3207 i++;
3208 }
3209 }
3210 }
3211
3212 if (!i) {
3213 err = -EINVAL;
3214 goto out_free;
3215 }
3216
3217 request->n_channels = i;
3218
3219 i = 0;
3220 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3221 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3222 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3223 err = -EINVAL;
3224 goto out_free;
3225 }
3226 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3227 request->ssids[i].ssid_len = nla_len(attr);
3228 i++;
3229 }
3230 }
3231
3232 if (info->attrs[NL80211_ATTR_IE]) {
3233 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3234 memcpy((void *)request->ie,
3235 nla_data(info->attrs[NL80211_ATTR_IE]),
3236 request->ie_len);
3237 }
3238
3239 request->dev = dev;
3240 request->wiphy = &rdev->wiphy;
3241
3242 rdev->scan_req = request;
3243 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3244
3245 if (!err) {
3246 nl80211_send_scan_start(rdev, dev);
3247 dev_hold(dev);
3248 } else {
3249 out_free:
3250 rdev->scan_req = NULL;
3251 kfree(request);
3252 }
3253
3254 return err;
3255 }
3256
3257 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3258 struct cfg80211_registered_device *rdev,
3259 struct wireless_dev *wdev,
3260 struct cfg80211_internal_bss *intbss)
3261 {
3262 struct cfg80211_bss *res = &intbss->pub;
3263 void *hdr;
3264 struct nlattr *bss;
3265 int i;
3266
3267 ASSERT_WDEV_LOCK(wdev);
3268
3269 hdr = nl80211hdr_put(msg, pid, seq, flags,
3270 NL80211_CMD_NEW_SCAN_RESULTS);
3271 if (!hdr)
3272 return -1;
3273
3274 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3276
3277 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3278 if (!bss)
3279 goto nla_put_failure;
3280 if (!is_zero_ether_addr(res->bssid))
3281 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3282 if (res->information_elements && res->len_information_elements)
3283 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3284 res->len_information_elements,
3285 res->information_elements);
3286 if (res->beacon_ies && res->len_beacon_ies &&
3287 res->beacon_ies != res->information_elements)
3288 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3289 res->len_beacon_ies, res->beacon_ies);
3290 if (res->tsf)
3291 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3292 if (res->beacon_interval)
3293 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3294 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3295 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3296 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3297 jiffies_to_msecs(jiffies - intbss->ts));
3298
3299 switch (rdev->wiphy.signal_type) {
3300 case CFG80211_SIGNAL_TYPE_MBM:
3301 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3302 break;
3303 case CFG80211_SIGNAL_TYPE_UNSPEC:
3304 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3305 break;
3306 default:
3307 break;
3308 }
3309
3310 switch (wdev->iftype) {
3311 case NL80211_IFTYPE_P2P_CLIENT:
3312 case NL80211_IFTYPE_STATION:
3313 if (intbss == wdev->current_bss)
3314 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3315 NL80211_BSS_STATUS_ASSOCIATED);
3316 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3317 if (intbss != wdev->auth_bsses[i])
3318 continue;
3319 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3320 NL80211_BSS_STATUS_AUTHENTICATED);
3321 break;
3322 }
3323 break;
3324 case NL80211_IFTYPE_ADHOC:
3325 if (intbss == wdev->current_bss)
3326 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3327 NL80211_BSS_STATUS_IBSS_JOINED);
3328 break;
3329 default:
3330 break;
3331 }
3332
3333 nla_nest_end(msg, bss);
3334
3335 return genlmsg_end(msg, hdr);
3336
3337 nla_put_failure:
3338 genlmsg_cancel(msg, hdr);
3339 return -EMSGSIZE;
3340 }
3341
3342 static int nl80211_dump_scan(struct sk_buff *skb,
3343 struct netlink_callback *cb)
3344 {
3345 struct cfg80211_registered_device *rdev;
3346 struct net_device *dev;
3347 struct cfg80211_internal_bss *scan;
3348 struct wireless_dev *wdev;
3349 int start = cb->args[1], idx = 0;
3350 int err;
3351
3352 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3353 if (err)
3354 return err;
3355
3356 wdev = dev->ieee80211_ptr;
3357
3358 wdev_lock(wdev);
3359 spin_lock_bh(&rdev->bss_lock);
3360 cfg80211_bss_expire(rdev);
3361
3362 list_for_each_entry(scan, &rdev->bss_list, list) {
3363 if (++idx <= start)
3364 continue;
3365 if (nl80211_send_bss(skb,
3366 NETLINK_CB(cb->skb).pid,
3367 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3368 rdev, wdev, scan) < 0) {
3369 idx--;
3370 break;
3371 }
3372 }
3373
3374 spin_unlock_bh(&rdev->bss_lock);
3375 wdev_unlock(wdev);
3376
3377 cb->args[1] = idx;
3378 nl80211_finish_netdev_dump(rdev);
3379
3380 return skb->len;
3381 }
3382
3383 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3384 int flags, struct net_device *dev,
3385 struct survey_info *survey)
3386 {
3387 void *hdr;
3388 struct nlattr *infoattr;
3389
3390 /* Survey without a channel doesn't make sense */
3391 if (!survey->channel)
3392 return -EINVAL;
3393
3394 hdr = nl80211hdr_put(msg, pid, seq, flags,
3395 NL80211_CMD_NEW_SURVEY_RESULTS);
3396 if (!hdr)
3397 return -ENOMEM;
3398
3399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3400
3401 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3402 if (!infoattr)
3403 goto nla_put_failure;
3404
3405 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3406 survey->channel->center_freq);
3407 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3408 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3409 survey->noise);
3410 if (survey->filled & SURVEY_INFO_IN_USE)
3411 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3412 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3413 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3414 survey->channel_time);
3415 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3416 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3417 survey->channel_time_busy);
3418 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3419 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3420 survey->channel_time_ext_busy);
3421 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3422 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3423 survey->channel_time_rx);
3424 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3425 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3426 survey->channel_time_tx);
3427
3428 nla_nest_end(msg, infoattr);
3429
3430 return genlmsg_end(msg, hdr);
3431
3432 nla_put_failure:
3433 genlmsg_cancel(msg, hdr);
3434 return -EMSGSIZE;
3435 }
3436
3437 static int nl80211_dump_survey(struct sk_buff *skb,
3438 struct netlink_callback *cb)
3439 {
3440 struct survey_info survey;
3441 struct cfg80211_registered_device *dev;
3442 struct net_device *netdev;
3443 int survey_idx = cb->args[1];
3444 int res;
3445
3446 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3447 if (res)
3448 return res;
3449
3450 if (!dev->ops->dump_survey) {
3451 res = -EOPNOTSUPP;
3452 goto out_err;
3453 }
3454
3455 while (1) {
3456 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3457 &survey);
3458 if (res == -ENOENT)
3459 break;
3460 if (res)
3461 goto out_err;
3462
3463 if (nl80211_send_survey(skb,
3464 NETLINK_CB(cb->skb).pid,
3465 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3466 netdev,
3467 &survey) < 0)
3468 goto out;
3469 survey_idx++;
3470 }
3471
3472 out:
3473 cb->args[1] = survey_idx;
3474 res = skb->len;
3475 out_err:
3476 nl80211_finish_netdev_dump(dev);
3477 return res;
3478 }
3479
3480 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3481 {
3482 return auth_type <= NL80211_AUTHTYPE_MAX;
3483 }
3484
3485 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3486 {
3487 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3488 NL80211_WPA_VERSION_2));
3489 }
3490
3491 static bool nl80211_valid_akm_suite(u32 akm)
3492 {
3493 return akm == WLAN_AKM_SUITE_8021X ||
3494 akm == WLAN_AKM_SUITE_PSK;
3495 }
3496
3497 static bool nl80211_valid_cipher_suite(u32 cipher)
3498 {
3499 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3500 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3501 cipher == WLAN_CIPHER_SUITE_TKIP ||
3502 cipher == WLAN_CIPHER_SUITE_CCMP ||
3503 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3504 }
3505
3506
3507 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3508 {
3509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3510 struct net_device *dev = info->user_ptr[1];
3511 struct ieee80211_channel *chan;
3512 const u8 *bssid, *ssid, *ie = NULL;
3513 int err, ssid_len, ie_len = 0;
3514 enum nl80211_auth_type auth_type;
3515 struct key_parse key;
3516 bool local_state_change;
3517
3518 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3519 return -EINVAL;
3520
3521 if (!info->attrs[NL80211_ATTR_MAC])
3522 return -EINVAL;
3523
3524 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3525 return -EINVAL;
3526
3527 if (!info->attrs[NL80211_ATTR_SSID])
3528 return -EINVAL;
3529
3530 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3531 return -EINVAL;
3532
3533 err = nl80211_parse_key(info, &key);
3534 if (err)
3535 return err;
3536
3537 if (key.idx >= 0) {
3538 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3539 return -EINVAL;
3540 if (!key.p.key || !key.p.key_len)
3541 return -EINVAL;
3542 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3543 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3544 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3545 key.p.key_len != WLAN_KEY_LEN_WEP104))
3546 return -EINVAL;
3547 if (key.idx > 4)
3548 return -EINVAL;
3549 } else {
3550 key.p.key_len = 0;
3551 key.p.key = NULL;
3552 }
3553
3554 if (key.idx >= 0) {
3555 int i;
3556 bool ok = false;
3557 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3558 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3559 ok = true;
3560 break;
3561 }
3562 }
3563 if (!ok)
3564 return -EINVAL;
3565 }
3566
3567 if (!rdev->ops->auth)
3568 return -EOPNOTSUPP;
3569
3570 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3572 return -EOPNOTSUPP;
3573
3574 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3575 chan = ieee80211_get_channel(&rdev->wiphy,
3576 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3577 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3578 return -EINVAL;
3579
3580 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3581 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3582
3583 if (info->attrs[NL80211_ATTR_IE]) {
3584 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3585 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3586 }
3587
3588 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3589 if (!nl80211_valid_auth_type(auth_type))
3590 return -EINVAL;
3591
3592 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3593
3594 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3595 ssid, ssid_len, ie, ie_len,
3596 key.p.key, key.p.key_len, key.idx,
3597 local_state_change);
3598 }
3599
3600 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3601 struct genl_info *info,
3602 struct cfg80211_crypto_settings *settings,
3603 int cipher_limit)
3604 {
3605 memset(settings, 0, sizeof(*settings));
3606
3607 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3608
3609 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3610 u16 proto;
3611 proto = nla_get_u16(
3612 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3613 settings->control_port_ethertype = cpu_to_be16(proto);
3614 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3615 proto != ETH_P_PAE)
3616 return -EINVAL;
3617 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3618 settings->control_port_no_encrypt = true;
3619 } else
3620 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3621
3622 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3623 void *data;
3624 int len, i;
3625
3626 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3627 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3628 settings->n_ciphers_pairwise = len / sizeof(u32);
3629
3630 if (len % sizeof(u32))
3631 return -EINVAL;
3632
3633 if (settings->n_ciphers_pairwise > cipher_limit)
3634 return -EINVAL;
3635
3636 memcpy(settings->ciphers_pairwise, data, len);
3637
3638 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3639 if (!nl80211_valid_cipher_suite(
3640 settings->ciphers_pairwise[i]))
3641 return -EINVAL;
3642 }
3643
3644 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3645 settings->cipher_group =
3646 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3647 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3648 return -EINVAL;
3649 }
3650
3651 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3652 settings->wpa_versions =
3653 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3654 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3655 return -EINVAL;
3656 }
3657
3658 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3659 void *data;
3660 int len, i;
3661
3662 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3663 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3664 settings->n_akm_suites = len / sizeof(u32);
3665
3666 if (len % sizeof(u32))
3667 return -EINVAL;
3668
3669 memcpy(settings->akm_suites, data, len);
3670
3671 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3672 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3673 return -EINVAL;
3674 }
3675
3676 return 0;
3677 }
3678
3679 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3680 {
3681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3682 struct net_device *dev = info->user_ptr[1];
3683 struct cfg80211_crypto_settings crypto;
3684 struct ieee80211_channel *chan;
3685 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
3686 int err, ssid_len, ie_len = 0;
3687 bool use_mfp = false;
3688
3689 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3690 return -EINVAL;
3691
3692 if (!info->attrs[NL80211_ATTR_MAC] ||
3693 !info->attrs[NL80211_ATTR_SSID] ||
3694 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
3695 return -EINVAL;
3696
3697 if (!rdev->ops->assoc)
3698 return -EOPNOTSUPP;
3699
3700 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3701 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3702 return -EOPNOTSUPP;
3703
3704 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3705
3706 chan = ieee80211_get_channel(&rdev->wiphy,
3707 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3708 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3709 return -EINVAL;
3710
3711 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3712 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3713
3714 if (info->attrs[NL80211_ATTR_IE]) {
3715 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3716 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3717 }
3718
3719 if (info->attrs[NL80211_ATTR_USE_MFP]) {
3720 enum nl80211_mfp mfp =
3721 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
3722 if (mfp == NL80211_MFP_REQUIRED)
3723 use_mfp = true;
3724 else if (mfp != NL80211_MFP_NO)
3725 return -EINVAL;
3726 }
3727
3728 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3729 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3730
3731 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
3732 if (!err)
3733 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3734 ssid, ssid_len, ie, ie_len, use_mfp,
3735 &crypto);
3736
3737 return err;
3738 }
3739
3740 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3741 {
3742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3743 struct net_device *dev = info->user_ptr[1];
3744 const u8 *ie = NULL, *bssid;
3745 int ie_len = 0;
3746 u16 reason_code;
3747 bool local_state_change;
3748
3749 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3750 return -EINVAL;
3751
3752 if (!info->attrs[NL80211_ATTR_MAC])
3753 return -EINVAL;
3754
3755 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3756 return -EINVAL;
3757
3758 if (!rdev->ops->deauth)
3759 return -EOPNOTSUPP;
3760
3761 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3762 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3763 return -EOPNOTSUPP;
3764
3765 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3766
3767 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3768 if (reason_code == 0) {
3769 /* Reason Code 0 is reserved */
3770 return -EINVAL;
3771 }
3772
3773 if (info->attrs[NL80211_ATTR_IE]) {
3774 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3775 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3776 }
3777
3778 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3779
3780 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3781 local_state_change);
3782 }
3783
3784 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3785 {
3786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3787 struct net_device *dev = info->user_ptr[1];
3788 const u8 *ie = NULL, *bssid;
3789 int ie_len = 0;
3790 u16 reason_code;
3791 bool local_state_change;
3792
3793 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3794 return -EINVAL;
3795
3796 if (!info->attrs[NL80211_ATTR_MAC])
3797 return -EINVAL;
3798
3799 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3800 return -EINVAL;
3801
3802 if (!rdev->ops->disassoc)
3803 return -EOPNOTSUPP;
3804
3805 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3806 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3807 return -EOPNOTSUPP;
3808
3809 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3810
3811 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3812 if (reason_code == 0) {
3813 /* Reason Code 0 is reserved */
3814 return -EINVAL;
3815 }
3816
3817 if (info->attrs[NL80211_ATTR_IE]) {
3818 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3819 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3820 }
3821
3822 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3823
3824 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3825 local_state_change);
3826 }
3827
3828 static bool
3829 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
3830 int mcast_rate[IEEE80211_NUM_BANDS],
3831 int rateval)
3832 {
3833 struct wiphy *wiphy = &rdev->wiphy;
3834 bool found = false;
3835 int band, i;
3836
3837 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3838 struct ieee80211_supported_band *sband;
3839
3840 sband = wiphy->bands[band];
3841 if (!sband)
3842 continue;
3843
3844 for (i = 0; i < sband->n_bitrates; i++) {
3845 if (sband->bitrates[i].bitrate == rateval) {
3846 mcast_rate[band] = i + 1;
3847 found = true;
3848 break;
3849 }
3850 }
3851 }
3852
3853 return found;
3854 }
3855
3856 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3857 {
3858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3859 struct net_device *dev = info->user_ptr[1];
3860 struct cfg80211_ibss_params ibss;
3861 struct wiphy *wiphy;
3862 struct cfg80211_cached_keys *connkeys = NULL;
3863 int err;
3864
3865 memset(&ibss, 0, sizeof(ibss));
3866
3867 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3868 return -EINVAL;
3869
3870 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3871 !info->attrs[NL80211_ATTR_SSID] ||
3872 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3873 return -EINVAL;
3874
3875 ibss.beacon_interval = 100;
3876
3877 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3878 ibss.beacon_interval =
3879 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3880 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3881 return -EINVAL;
3882 }
3883
3884 if (!rdev->ops->join_ibss)
3885 return -EOPNOTSUPP;
3886
3887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3888 return -EOPNOTSUPP;
3889
3890 wiphy = &rdev->wiphy;
3891
3892 if (info->attrs[NL80211_ATTR_MAC])
3893 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3894 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3895 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3896
3897 if (info->attrs[NL80211_ATTR_IE]) {
3898 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3899 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3900 }
3901
3902 ibss.channel = ieee80211_get_channel(wiphy,
3903 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3904 if (!ibss.channel ||
3905 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
3906 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3907 return -EINVAL;
3908
3909 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
3910 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3911
3912 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3913 u8 *rates =
3914 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3915 int n_rates =
3916 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3917 struct ieee80211_supported_band *sband =
3918 wiphy->bands[ibss.channel->band];
3919 int i, j;
3920
3921 if (n_rates == 0)
3922 return -EINVAL;
3923
3924 for (i = 0; i < n_rates; i++) {
3925 int rate = (rates[i] & 0x7f) * 5;
3926 bool found = false;
3927
3928 for (j = 0; j < sband->n_bitrates; j++) {
3929 if (sband->bitrates[j].bitrate == rate) {
3930 found = true;
3931 ibss.basic_rates |= BIT(j);
3932 break;
3933 }
3934 }
3935 if (!found)
3936 return -EINVAL;
3937 }
3938 }
3939
3940 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
3941 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
3942 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
3943 return -EINVAL;
3944
3945 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3946 connkeys = nl80211_parse_connkeys(rdev,
3947 info->attrs[NL80211_ATTR_KEYS]);
3948 if (IS_ERR(connkeys))
3949 return PTR_ERR(connkeys);
3950 }
3951
3952 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
3953 if (err)
3954 kfree(connkeys);
3955 return err;
3956 }
3957
3958 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3959 {
3960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3961 struct net_device *dev = info->user_ptr[1];
3962
3963 if (!rdev->ops->leave_ibss)
3964 return -EOPNOTSUPP;
3965
3966 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3967 return -EOPNOTSUPP;
3968
3969 return cfg80211_leave_ibss(rdev, dev, false);
3970 }
3971
3972 #ifdef CONFIG_NL80211_TESTMODE
3973 static struct genl_multicast_group nl80211_testmode_mcgrp = {
3974 .name = "testmode",
3975 };
3976
3977 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3978 {
3979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3980 int err;
3981
3982 if (!info->attrs[NL80211_ATTR_TESTDATA])
3983 return -EINVAL;
3984
3985 err = -EOPNOTSUPP;
3986 if (rdev->ops->testmode_cmd) {
3987 rdev->testmode_info = info;
3988 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3989 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3990 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3991 rdev->testmode_info = NULL;
3992 }
3993
3994 return err;
3995 }
3996
3997 static struct sk_buff *
3998 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3999 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4000 {
4001 struct sk_buff *skb;
4002 void *hdr;
4003 struct nlattr *data;
4004
4005 skb = nlmsg_new(approxlen + 100, gfp);
4006 if (!skb)
4007 return NULL;
4008
4009 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4010 if (!hdr) {
4011 kfree_skb(skb);
4012 return NULL;
4013 }
4014
4015 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4016 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4017
4018 ((void **)skb->cb)[0] = rdev;
4019 ((void **)skb->cb)[1] = hdr;
4020 ((void **)skb->cb)[2] = data;
4021
4022 return skb;
4023
4024 nla_put_failure:
4025 kfree_skb(skb);
4026 return NULL;
4027 }
4028
4029 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4030 int approxlen)
4031 {
4032 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4033
4034 if (WARN_ON(!rdev->testmode_info))
4035 return NULL;
4036
4037 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4038 rdev->testmode_info->snd_pid,
4039 rdev->testmode_info->snd_seq,
4040 GFP_KERNEL);
4041 }
4042 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4043
4044 int cfg80211_testmode_reply(struct sk_buff *skb)
4045 {
4046 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4047 void *hdr = ((void **)skb->cb)[1];
4048 struct nlattr *data = ((void **)skb->cb)[2];
4049
4050 if (WARN_ON(!rdev->testmode_info)) {
4051 kfree_skb(skb);
4052 return -EINVAL;
4053 }
4054
4055 nla_nest_end(skb, data);
4056 genlmsg_end(skb, hdr);
4057 return genlmsg_reply(skb, rdev->testmode_info);
4058 }
4059 EXPORT_SYMBOL(cfg80211_testmode_reply);
4060
4061 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4062 int approxlen, gfp_t gfp)
4063 {
4064 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4065
4066 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4067 }
4068 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4069
4070 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4071 {
4072 void *hdr = ((void **)skb->cb)[1];
4073 struct nlattr *data = ((void **)skb->cb)[2];
4074
4075 nla_nest_end(skb, data);
4076 genlmsg_end(skb, hdr);
4077 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4078 }
4079 EXPORT_SYMBOL(cfg80211_testmode_event);
4080 #endif
4081
4082 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4083 {
4084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4085 struct net_device *dev = info->user_ptr[1];
4086 struct cfg80211_connect_params connect;
4087 struct wiphy *wiphy;
4088 struct cfg80211_cached_keys *connkeys = NULL;
4089 int err;
4090
4091 memset(&connect, 0, sizeof(connect));
4092
4093 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4094 return -EINVAL;
4095
4096 if (!info->attrs[NL80211_ATTR_SSID] ||
4097 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4098 return -EINVAL;
4099
4100 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4101 connect.auth_type =
4102 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4103 if (!nl80211_valid_auth_type(connect.auth_type))
4104 return -EINVAL;
4105 } else
4106 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4107
4108 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4109
4110 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4111 NL80211_MAX_NR_CIPHER_SUITES);
4112 if (err)
4113 return err;
4114
4115 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4116 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4117 return -EOPNOTSUPP;
4118
4119 wiphy = &rdev->wiphy;
4120
4121 if (info->attrs[NL80211_ATTR_MAC])
4122 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4123 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4124 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4125
4126 if (info->attrs[NL80211_ATTR_IE]) {
4127 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4128 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4129 }
4130
4131 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4132 connect.channel =
4133 ieee80211_get_channel(wiphy,
4134 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4135 if (!connect.channel ||
4136 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4137 return -EINVAL;
4138 }
4139
4140 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4141 connkeys = nl80211_parse_connkeys(rdev,
4142 info->attrs[NL80211_ATTR_KEYS]);
4143 if (IS_ERR(connkeys))
4144 return PTR_ERR(connkeys);
4145 }
4146
4147 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4148 if (err)
4149 kfree(connkeys);
4150 return err;
4151 }
4152
4153 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4154 {
4155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4156 struct net_device *dev = info->user_ptr[1];
4157 u16 reason;
4158
4159 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4160 reason = WLAN_REASON_DEAUTH_LEAVING;
4161 else
4162 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4163
4164 if (reason == 0)
4165 return -EINVAL;
4166
4167 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4168 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4169 return -EOPNOTSUPP;
4170
4171 return cfg80211_disconnect(rdev, dev, reason, true);
4172 }
4173
4174 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4175 {
4176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4177 struct net *net;
4178 int err;
4179 u32 pid;
4180
4181 if (!info->attrs[NL80211_ATTR_PID])
4182 return -EINVAL;
4183
4184 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4185
4186 net = get_net_ns_by_pid(pid);
4187 if (IS_ERR(net))
4188 return PTR_ERR(net);
4189
4190 err = 0;
4191
4192 /* check if anything to do */
4193 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4194 err = cfg80211_switch_netns(rdev, net);
4195
4196 put_net(net);
4197 return err;
4198 }
4199
4200 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4201 {
4202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4203 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4204 struct cfg80211_pmksa *pmksa) = NULL;
4205 struct net_device *dev = info->user_ptr[1];
4206 struct cfg80211_pmksa pmksa;
4207
4208 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4209
4210 if (!info->attrs[NL80211_ATTR_MAC])
4211 return -EINVAL;
4212
4213 if (!info->attrs[NL80211_ATTR_PMKID])
4214 return -EINVAL;
4215
4216 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4217 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4218
4219 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4220 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4221 return -EOPNOTSUPP;
4222
4223 switch (info->genlhdr->cmd) {
4224 case NL80211_CMD_SET_PMKSA:
4225 rdev_ops = rdev->ops->set_pmksa;
4226 break;
4227 case NL80211_CMD_DEL_PMKSA:
4228 rdev_ops = rdev->ops->del_pmksa;
4229 break;
4230 default:
4231 WARN_ON(1);
4232 break;
4233 }
4234
4235 if (!rdev_ops)
4236 return -EOPNOTSUPP;
4237
4238 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4239 }
4240
4241 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4242 {
4243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4244 struct net_device *dev = info->user_ptr[1];
4245
4246 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4247 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4248 return -EOPNOTSUPP;
4249
4250 if (!rdev->ops->flush_pmksa)
4251 return -EOPNOTSUPP;
4252
4253 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4254 }
4255
4256 static int nl80211_remain_on_channel(struct sk_buff *skb,
4257 struct genl_info *info)
4258 {
4259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4260 struct net_device *dev = info->user_ptr[1];
4261 struct ieee80211_channel *chan;
4262 struct sk_buff *msg;
4263 void *hdr;
4264 u64 cookie;
4265 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4266 u32 freq, duration;
4267 int err;
4268
4269 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4270 !info->attrs[NL80211_ATTR_DURATION])
4271 return -EINVAL;
4272
4273 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4274
4275 /*
4276 * We should be on that channel for at least one jiffie,
4277 * and more than 5 seconds seems excessive.
4278 */
4279 if (!duration || !msecs_to_jiffies(duration) ||
4280 duration > rdev->wiphy.max_remain_on_channel_duration)
4281 return -EINVAL;
4282
4283 if (!rdev->ops->remain_on_channel)
4284 return -EOPNOTSUPP;
4285
4286 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4287 channel_type = nla_get_u32(
4288 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4289 if (channel_type != NL80211_CHAN_NO_HT &&
4290 channel_type != NL80211_CHAN_HT20 &&
4291 channel_type != NL80211_CHAN_HT40PLUS &&
4292 channel_type != NL80211_CHAN_HT40MINUS)
4293 return -EINVAL;
4294 }
4295
4296 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4297 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4298 if (chan == NULL)
4299 return -EINVAL;
4300
4301 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4302 if (!msg)
4303 return -ENOMEM;
4304
4305 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4306 NL80211_CMD_REMAIN_ON_CHANNEL);
4307
4308 if (IS_ERR(hdr)) {
4309 err = PTR_ERR(hdr);
4310 goto free_msg;
4311 }
4312
4313 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4314 channel_type, duration, &cookie);
4315
4316 if (err)
4317 goto free_msg;
4318
4319 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4320
4321 genlmsg_end(msg, hdr);
4322
4323 return genlmsg_reply(msg, info);
4324
4325 nla_put_failure:
4326 err = -ENOBUFS;
4327 free_msg:
4328 nlmsg_free(msg);
4329 return err;
4330 }
4331
4332 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4333 struct genl_info *info)
4334 {
4335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4336 struct net_device *dev = info->user_ptr[1];
4337 u64 cookie;
4338
4339 if (!info->attrs[NL80211_ATTR_COOKIE])
4340 return -EINVAL;
4341
4342 if (!rdev->ops->cancel_remain_on_channel)
4343 return -EOPNOTSUPP;
4344
4345 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4346
4347 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4348 }
4349
4350 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4351 u8 *rates, u8 rates_len)
4352 {
4353 u8 i;
4354 u32 mask = 0;
4355
4356 for (i = 0; i < rates_len; i++) {
4357 int rate = (rates[i] & 0x7f) * 5;
4358 int ridx;
4359 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4360 struct ieee80211_rate *srate =
4361 &sband->bitrates[ridx];
4362 if (rate == srate->bitrate) {
4363 mask |= 1 << ridx;
4364 break;
4365 }
4366 }
4367 if (ridx == sband->n_bitrates)
4368 return 0; /* rate not found */
4369 }
4370
4371 return mask;
4372 }
4373
4374 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4375 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4376 .len = NL80211_MAX_SUPP_RATES },
4377 };
4378
4379 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4380 struct genl_info *info)
4381 {
4382 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4383 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4384 struct cfg80211_bitrate_mask mask;
4385 int rem, i;
4386 struct net_device *dev = info->user_ptr[1];
4387 struct nlattr *tx_rates;
4388 struct ieee80211_supported_band *sband;
4389
4390 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4391 return -EINVAL;
4392
4393 if (!rdev->ops->set_bitrate_mask)
4394 return -EOPNOTSUPP;
4395
4396 memset(&mask, 0, sizeof(mask));
4397 /* Default to all rates enabled */
4398 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4399 sband = rdev->wiphy.bands[i];
4400 mask.control[i].legacy =
4401 sband ? (1 << sband->n_bitrates) - 1 : 0;
4402 }
4403
4404 /*
4405 * The nested attribute uses enum nl80211_band as the index. This maps
4406 * directly to the enum ieee80211_band values used in cfg80211.
4407 */
4408 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4409 {
4410 enum ieee80211_band band = nla_type(tx_rates);
4411 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4412 return -EINVAL;
4413 sband = rdev->wiphy.bands[band];
4414 if (sband == NULL)
4415 return -EINVAL;
4416 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4417 nla_len(tx_rates), nl80211_txattr_policy);
4418 if (tb[NL80211_TXRATE_LEGACY]) {
4419 mask.control[band].legacy = rateset_to_mask(
4420 sband,
4421 nla_data(tb[NL80211_TXRATE_LEGACY]),
4422 nla_len(tb[NL80211_TXRATE_LEGACY]));
4423 if (mask.control[band].legacy == 0)
4424 return -EINVAL;
4425 }
4426 }
4427
4428 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4429 }
4430
4431 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4432 {
4433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4434 struct net_device *dev = info->user_ptr[1];
4435 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4436
4437 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4438 return -EINVAL;
4439
4440 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4441 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4442
4443 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4444 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4445 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4446 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4447 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4448 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4449 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4450 return -EOPNOTSUPP;
4451
4452 /* not much point in registering if we can't reply */
4453 if (!rdev->ops->mgmt_tx)
4454 return -EOPNOTSUPP;
4455
4456 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4457 frame_type,
4458 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4459 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4460 }
4461
4462 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4463 {
4464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4465 struct net_device *dev = info->user_ptr[1];
4466 struct ieee80211_channel *chan;
4467 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4468 bool channel_type_valid = false;
4469 u32 freq;
4470 int err;
4471 void *hdr;
4472 u64 cookie;
4473 struct sk_buff *msg;
4474 unsigned int wait = 0;
4475 bool offchan;
4476
4477 if (!info->attrs[NL80211_ATTR_FRAME] ||
4478 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4479 return -EINVAL;
4480
4481 if (!rdev->ops->mgmt_tx)
4482 return -EOPNOTSUPP;
4483
4484 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4485 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4486 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4487 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4488 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4489 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4490 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4491 return -EOPNOTSUPP;
4492
4493 if (info->attrs[NL80211_ATTR_DURATION]) {
4494 if (!rdev->ops->mgmt_tx_cancel_wait)
4495 return -EINVAL;
4496 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4497 }
4498
4499 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4500 channel_type = nla_get_u32(
4501 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4502 if (channel_type != NL80211_CHAN_NO_HT &&
4503 channel_type != NL80211_CHAN_HT20 &&
4504 channel_type != NL80211_CHAN_HT40PLUS &&
4505 channel_type != NL80211_CHAN_HT40MINUS)
4506 return -EINVAL;
4507 channel_type_valid = true;
4508 }
4509
4510 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4511
4512 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4513 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4514 if (chan == NULL)
4515 return -EINVAL;
4516
4517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4518 if (!msg)
4519 return -ENOMEM;
4520
4521 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4522 NL80211_CMD_FRAME);
4523
4524 if (IS_ERR(hdr)) {
4525 err = PTR_ERR(hdr);
4526 goto free_msg;
4527 }
4528 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4529 channel_type_valid, wait,
4530 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4531 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4532 &cookie);
4533 if (err)
4534 goto free_msg;
4535
4536 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4537
4538 genlmsg_end(msg, hdr);
4539 return genlmsg_reply(msg, info);
4540
4541 nla_put_failure:
4542 err = -ENOBUFS;
4543 free_msg:
4544 nlmsg_free(msg);
4545 return err;
4546 }
4547
4548 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4549 {
4550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4551 struct net_device *dev = info->user_ptr[1];
4552 u64 cookie;
4553
4554 if (!info->attrs[NL80211_ATTR_COOKIE])
4555 return -EINVAL;
4556
4557 if (!rdev->ops->mgmt_tx_cancel_wait)
4558 return -EOPNOTSUPP;
4559
4560 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4561 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4562 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4563 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4564 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4565 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4566 return -EOPNOTSUPP;
4567
4568 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4569
4570 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4571 }
4572
4573 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4574 {
4575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4576 struct wireless_dev *wdev;
4577 struct net_device *dev = info->user_ptr[1];
4578 u8 ps_state;
4579 bool state;
4580 int err;
4581
4582 if (!info->attrs[NL80211_ATTR_PS_STATE])
4583 return -EINVAL;
4584
4585 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4586
4587 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4588 return -EINVAL;
4589
4590 wdev = dev->ieee80211_ptr;
4591
4592 if (!rdev->ops->set_power_mgmt)
4593 return -EOPNOTSUPP;
4594
4595 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4596
4597 if (state == wdev->ps)
4598 return 0;
4599
4600 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4601 wdev->ps_timeout);
4602 if (!err)
4603 wdev->ps = state;
4604 return err;
4605 }
4606
4607 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4608 {
4609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4610 enum nl80211_ps_state ps_state;
4611 struct wireless_dev *wdev;
4612 struct net_device *dev = info->user_ptr[1];
4613 struct sk_buff *msg;
4614 void *hdr;
4615 int err;
4616
4617 wdev = dev->ieee80211_ptr;
4618
4619 if (!rdev->ops->set_power_mgmt)
4620 return -EOPNOTSUPP;
4621
4622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4623 if (!msg)
4624 return -ENOMEM;
4625
4626 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4627 NL80211_CMD_GET_POWER_SAVE);
4628 if (!hdr) {
4629 err = -ENOBUFS;
4630 goto free_msg;
4631 }
4632
4633 if (wdev->ps)
4634 ps_state = NL80211_PS_ENABLED;
4635 else
4636 ps_state = NL80211_PS_DISABLED;
4637
4638 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4639
4640 genlmsg_end(msg, hdr);
4641 return genlmsg_reply(msg, info);
4642
4643 nla_put_failure:
4644 err = -ENOBUFS;
4645 free_msg:
4646 nlmsg_free(msg);
4647 return err;
4648 }
4649
4650 static struct nla_policy
4651 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4652 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4653 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4654 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4655 };
4656
4657 static int nl80211_set_cqm_rssi(struct genl_info *info,
4658 s32 threshold, u32 hysteresis)
4659 {
4660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4661 struct wireless_dev *wdev;
4662 struct net_device *dev = info->user_ptr[1];
4663
4664 if (threshold > 0)
4665 return -EINVAL;
4666
4667 wdev = dev->ieee80211_ptr;
4668
4669 if (!rdev->ops->set_cqm_rssi_config)
4670 return -EOPNOTSUPP;
4671
4672 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4673 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4674 return -EOPNOTSUPP;
4675
4676 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4677 threshold, hysteresis);
4678 }
4679
4680 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4681 {
4682 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4683 struct nlattr *cqm;
4684 int err;
4685
4686 cqm = info->attrs[NL80211_ATTR_CQM];
4687 if (!cqm) {
4688 err = -EINVAL;
4689 goto out;
4690 }
4691
4692 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4693 nl80211_attr_cqm_policy);
4694 if (err)
4695 goto out;
4696
4697 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4698 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4699 s32 threshold;
4700 u32 hysteresis;
4701 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4702 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4703 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4704 } else
4705 err = -EINVAL;
4706
4707 out:
4708 return err;
4709 }
4710
4711 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
4712 {
4713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4714 struct net_device *dev = info->user_ptr[1];
4715 struct mesh_config cfg;
4716 struct mesh_setup setup;
4717 int err;
4718
4719 /* start with default */
4720 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
4721 memcpy(&setup, &default_mesh_setup, sizeof(setup));
4722
4723 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
4724 /* and parse parameters if given */
4725 err = nl80211_parse_mesh_config(info, &cfg, NULL);
4726 if (err)
4727 return err;
4728 }
4729
4730 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
4731 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
4732 return -EINVAL;
4733
4734 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
4735 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4736
4737 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
4738 /* parse additional setup parameters if given */
4739 err = nl80211_parse_mesh_setup(info, &setup);
4740 if (err)
4741 return err;
4742 }
4743
4744 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
4745 }
4746
4747 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
4748 {
4749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4750 struct net_device *dev = info->user_ptr[1];
4751
4752 return cfg80211_leave_mesh(rdev, dev);
4753 }
4754
4755 #define NL80211_FLAG_NEED_WIPHY 0x01
4756 #define NL80211_FLAG_NEED_NETDEV 0x02
4757 #define NL80211_FLAG_NEED_RTNL 0x04
4758 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4759 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4760 NL80211_FLAG_CHECK_NETDEV_UP)
4761
4762 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4763 struct genl_info *info)
4764 {
4765 struct cfg80211_registered_device *rdev;
4766 struct net_device *dev;
4767 int err;
4768 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4769
4770 if (rtnl)
4771 rtnl_lock();
4772
4773 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4774 rdev = cfg80211_get_dev_from_info(info);
4775 if (IS_ERR(rdev)) {
4776 if (rtnl)
4777 rtnl_unlock();
4778 return PTR_ERR(rdev);
4779 }
4780 info->user_ptr[0] = rdev;
4781 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4782 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4783 if (err) {
4784 if (rtnl)
4785 rtnl_unlock();
4786 return err;
4787 }
4788 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4789 !netif_running(dev)) {
4790 cfg80211_unlock_rdev(rdev);
4791 dev_put(dev);
4792 if (rtnl)
4793 rtnl_unlock();
4794 return -ENETDOWN;
4795 }
4796 info->user_ptr[0] = rdev;
4797 info->user_ptr[1] = dev;
4798 }
4799
4800 return 0;
4801 }
4802
4803 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4804 struct genl_info *info)
4805 {
4806 if (info->user_ptr[0])
4807 cfg80211_unlock_rdev(info->user_ptr[0]);
4808 if (info->user_ptr[1])
4809 dev_put(info->user_ptr[1]);
4810 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4811 rtnl_unlock();
4812 }
4813
4814 static struct genl_ops nl80211_ops[] = {
4815 {
4816 .cmd = NL80211_CMD_GET_WIPHY,
4817 .doit = nl80211_get_wiphy,
4818 .dumpit = nl80211_dump_wiphy,
4819 .policy = nl80211_policy,
4820 /* can be retrieved by unprivileged users */
4821 .internal_flags = NL80211_FLAG_NEED_WIPHY,
4822 },
4823 {
4824 .cmd = NL80211_CMD_SET_WIPHY,
4825 .doit = nl80211_set_wiphy,
4826 .policy = nl80211_policy,
4827 .flags = GENL_ADMIN_PERM,
4828 .internal_flags = NL80211_FLAG_NEED_RTNL,
4829 },
4830 {
4831 .cmd = NL80211_CMD_GET_INTERFACE,
4832 .doit = nl80211_get_interface,
4833 .dumpit = nl80211_dump_interface,
4834 .policy = nl80211_policy,
4835 /* can be retrieved by unprivileged users */
4836 .internal_flags = NL80211_FLAG_NEED_NETDEV,
4837 },
4838 {
4839 .cmd = NL80211_CMD_SET_INTERFACE,
4840 .doit = nl80211_set_interface,
4841 .policy = nl80211_policy,
4842 .flags = GENL_ADMIN_PERM,
4843 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4844 NL80211_FLAG_NEED_RTNL,
4845 },
4846 {
4847 .cmd = NL80211_CMD_NEW_INTERFACE,
4848 .doit = nl80211_new_interface,
4849 .policy = nl80211_policy,
4850 .flags = GENL_ADMIN_PERM,
4851 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4852 NL80211_FLAG_NEED_RTNL,
4853 },
4854 {
4855 .cmd = NL80211_CMD_DEL_INTERFACE,
4856 .doit = nl80211_del_interface,
4857 .policy = nl80211_policy,
4858 .flags = GENL_ADMIN_PERM,
4859 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4860 NL80211_FLAG_NEED_RTNL,
4861 },
4862 {
4863 .cmd = NL80211_CMD_GET_KEY,
4864 .doit = nl80211_get_key,
4865 .policy = nl80211_policy,
4866 .flags = GENL_ADMIN_PERM,
4867 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4868 NL80211_FLAG_NEED_RTNL,
4869 },
4870 {
4871 .cmd = NL80211_CMD_SET_KEY,
4872 .doit = nl80211_set_key,
4873 .policy = nl80211_policy,
4874 .flags = GENL_ADMIN_PERM,
4875 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4876 NL80211_FLAG_NEED_RTNL,
4877 },
4878 {
4879 .cmd = NL80211_CMD_NEW_KEY,
4880 .doit = nl80211_new_key,
4881 .policy = nl80211_policy,
4882 .flags = GENL_ADMIN_PERM,
4883 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4884 NL80211_FLAG_NEED_RTNL,
4885 },
4886 {
4887 .cmd = NL80211_CMD_DEL_KEY,
4888 .doit = nl80211_del_key,
4889 .policy = nl80211_policy,
4890 .flags = GENL_ADMIN_PERM,
4891 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4892 NL80211_FLAG_NEED_RTNL,
4893 },
4894 {
4895 .cmd = NL80211_CMD_SET_BEACON,
4896 .policy = nl80211_policy,
4897 .flags = GENL_ADMIN_PERM,
4898 .doit = nl80211_addset_beacon,
4899 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4900 NL80211_FLAG_NEED_RTNL,
4901 },
4902 {
4903 .cmd = NL80211_CMD_NEW_BEACON,
4904 .policy = nl80211_policy,
4905 .flags = GENL_ADMIN_PERM,
4906 .doit = nl80211_addset_beacon,
4907 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4908 NL80211_FLAG_NEED_RTNL,
4909 },
4910 {
4911 .cmd = NL80211_CMD_DEL_BEACON,
4912 .policy = nl80211_policy,
4913 .flags = GENL_ADMIN_PERM,
4914 .doit = nl80211_del_beacon,
4915 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4916 NL80211_FLAG_NEED_RTNL,
4917 },
4918 {
4919 .cmd = NL80211_CMD_GET_STATION,
4920 .doit = nl80211_get_station,
4921 .dumpit = nl80211_dump_station,
4922 .policy = nl80211_policy,
4923 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4924 NL80211_FLAG_NEED_RTNL,
4925 },
4926 {
4927 .cmd = NL80211_CMD_SET_STATION,
4928 .doit = nl80211_set_station,
4929 .policy = nl80211_policy,
4930 .flags = GENL_ADMIN_PERM,
4931 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4932 NL80211_FLAG_NEED_RTNL,
4933 },
4934 {
4935 .cmd = NL80211_CMD_NEW_STATION,
4936 .doit = nl80211_new_station,
4937 .policy = nl80211_policy,
4938 .flags = GENL_ADMIN_PERM,
4939 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4940 NL80211_FLAG_NEED_RTNL,
4941 },
4942 {
4943 .cmd = NL80211_CMD_DEL_STATION,
4944 .doit = nl80211_del_station,
4945 .policy = nl80211_policy,
4946 .flags = GENL_ADMIN_PERM,
4947 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4948 NL80211_FLAG_NEED_RTNL,
4949 },
4950 {
4951 .cmd = NL80211_CMD_GET_MPATH,
4952 .doit = nl80211_get_mpath,
4953 .dumpit = nl80211_dump_mpath,
4954 .policy = nl80211_policy,
4955 .flags = GENL_ADMIN_PERM,
4956 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4957 NL80211_FLAG_NEED_RTNL,
4958 },
4959 {
4960 .cmd = NL80211_CMD_SET_MPATH,
4961 .doit = nl80211_set_mpath,
4962 .policy = nl80211_policy,
4963 .flags = GENL_ADMIN_PERM,
4964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4965 NL80211_FLAG_NEED_RTNL,
4966 },
4967 {
4968 .cmd = NL80211_CMD_NEW_MPATH,
4969 .doit = nl80211_new_mpath,
4970 .policy = nl80211_policy,
4971 .flags = GENL_ADMIN_PERM,
4972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4973 NL80211_FLAG_NEED_RTNL,
4974 },
4975 {
4976 .cmd = NL80211_CMD_DEL_MPATH,
4977 .doit = nl80211_del_mpath,
4978 .policy = nl80211_policy,
4979 .flags = GENL_ADMIN_PERM,
4980 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4981 NL80211_FLAG_NEED_RTNL,
4982 },
4983 {
4984 .cmd = NL80211_CMD_SET_BSS,
4985 .doit = nl80211_set_bss,
4986 .policy = nl80211_policy,
4987 .flags = GENL_ADMIN_PERM,
4988 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4989 NL80211_FLAG_NEED_RTNL,
4990 },
4991 {
4992 .cmd = NL80211_CMD_GET_REG,
4993 .doit = nl80211_get_reg,
4994 .policy = nl80211_policy,
4995 /* can be retrieved by unprivileged users */
4996 },
4997 {
4998 .cmd = NL80211_CMD_SET_REG,
4999 .doit = nl80211_set_reg,
5000 .policy = nl80211_policy,
5001 .flags = GENL_ADMIN_PERM,
5002 },
5003 {
5004 .cmd = NL80211_CMD_REQ_SET_REG,
5005 .doit = nl80211_req_set_reg,
5006 .policy = nl80211_policy,
5007 .flags = GENL_ADMIN_PERM,
5008 },
5009 {
5010 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5011 .doit = nl80211_get_mesh_config,
5012 .policy = nl80211_policy,
5013 /* can be retrieved by unprivileged users */
5014 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5015 NL80211_FLAG_NEED_RTNL,
5016 },
5017 {
5018 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5019 .doit = nl80211_update_mesh_config,
5020 .policy = nl80211_policy,
5021 .flags = GENL_ADMIN_PERM,
5022 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5023 NL80211_FLAG_NEED_RTNL,
5024 },
5025 {
5026 .cmd = NL80211_CMD_TRIGGER_SCAN,
5027 .doit = nl80211_trigger_scan,
5028 .policy = nl80211_policy,
5029 .flags = GENL_ADMIN_PERM,
5030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5031 NL80211_FLAG_NEED_RTNL,
5032 },
5033 {
5034 .cmd = NL80211_CMD_GET_SCAN,
5035 .policy = nl80211_policy,
5036 .dumpit = nl80211_dump_scan,
5037 },
5038 {
5039 .cmd = NL80211_CMD_AUTHENTICATE,
5040 .doit = nl80211_authenticate,
5041 .policy = nl80211_policy,
5042 .flags = GENL_ADMIN_PERM,
5043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5044 NL80211_FLAG_NEED_RTNL,
5045 },
5046 {
5047 .cmd = NL80211_CMD_ASSOCIATE,
5048 .doit = nl80211_associate,
5049 .policy = nl80211_policy,
5050 .flags = GENL_ADMIN_PERM,
5051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5052 NL80211_FLAG_NEED_RTNL,
5053 },
5054 {
5055 .cmd = NL80211_CMD_DEAUTHENTICATE,
5056 .doit = nl80211_deauthenticate,
5057 .policy = nl80211_policy,
5058 .flags = GENL_ADMIN_PERM,
5059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5060 NL80211_FLAG_NEED_RTNL,
5061 },
5062 {
5063 .cmd = NL80211_CMD_DISASSOCIATE,
5064 .doit = nl80211_disassociate,
5065 .policy = nl80211_policy,
5066 .flags = GENL_ADMIN_PERM,
5067 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5068 NL80211_FLAG_NEED_RTNL,
5069 },
5070 {
5071 .cmd = NL80211_CMD_JOIN_IBSS,
5072 .doit = nl80211_join_ibss,
5073 .policy = nl80211_policy,
5074 .flags = GENL_ADMIN_PERM,
5075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5076 NL80211_FLAG_NEED_RTNL,
5077 },
5078 {
5079 .cmd = NL80211_CMD_LEAVE_IBSS,
5080 .doit = nl80211_leave_ibss,
5081 .policy = nl80211_policy,
5082 .flags = GENL_ADMIN_PERM,
5083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5084 NL80211_FLAG_NEED_RTNL,
5085 },
5086 #ifdef CONFIG_NL80211_TESTMODE
5087 {
5088 .cmd = NL80211_CMD_TESTMODE,
5089 .doit = nl80211_testmode_do,
5090 .policy = nl80211_policy,
5091 .flags = GENL_ADMIN_PERM,
5092 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5093 NL80211_FLAG_NEED_RTNL,
5094 },
5095 #endif
5096 {
5097 .cmd = NL80211_CMD_CONNECT,
5098 .doit = nl80211_connect,
5099 .policy = nl80211_policy,
5100 .flags = GENL_ADMIN_PERM,
5101 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5102 NL80211_FLAG_NEED_RTNL,
5103 },
5104 {
5105 .cmd = NL80211_CMD_DISCONNECT,
5106 .doit = nl80211_disconnect,
5107 .policy = nl80211_policy,
5108 .flags = GENL_ADMIN_PERM,
5109 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5110 NL80211_FLAG_NEED_RTNL,
5111 },
5112 {
5113 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5114 .doit = nl80211_wiphy_netns,
5115 .policy = nl80211_policy,
5116 .flags = GENL_ADMIN_PERM,
5117 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5118 NL80211_FLAG_NEED_RTNL,
5119 },
5120 {
5121 .cmd = NL80211_CMD_GET_SURVEY,
5122 .policy = nl80211_policy,
5123 .dumpit = nl80211_dump_survey,
5124 },
5125 {
5126 .cmd = NL80211_CMD_SET_PMKSA,
5127 .doit = nl80211_setdel_pmksa,
5128 .policy = nl80211_policy,
5129 .flags = GENL_ADMIN_PERM,
5130 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5131 NL80211_FLAG_NEED_RTNL,
5132 },
5133 {
5134 .cmd = NL80211_CMD_DEL_PMKSA,
5135 .doit = nl80211_setdel_pmksa,
5136 .policy = nl80211_policy,
5137 .flags = GENL_ADMIN_PERM,
5138 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5139 NL80211_FLAG_NEED_RTNL,
5140 },
5141 {
5142 .cmd = NL80211_CMD_FLUSH_PMKSA,
5143 .doit = nl80211_flush_pmksa,
5144 .policy = nl80211_policy,
5145 .flags = GENL_ADMIN_PERM,
5146 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5147 NL80211_FLAG_NEED_RTNL,
5148 },
5149 {
5150 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5151 .doit = nl80211_remain_on_channel,
5152 .policy = nl80211_policy,
5153 .flags = GENL_ADMIN_PERM,
5154 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5155 NL80211_FLAG_NEED_RTNL,
5156 },
5157 {
5158 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5159 .doit = nl80211_cancel_remain_on_channel,
5160 .policy = nl80211_policy,
5161 .flags = GENL_ADMIN_PERM,
5162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5163 NL80211_FLAG_NEED_RTNL,
5164 },
5165 {
5166 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5167 .doit = nl80211_set_tx_bitrate_mask,
5168 .policy = nl80211_policy,
5169 .flags = GENL_ADMIN_PERM,
5170 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5171 NL80211_FLAG_NEED_RTNL,
5172 },
5173 {
5174 .cmd = NL80211_CMD_REGISTER_FRAME,
5175 .doit = nl80211_register_mgmt,
5176 .policy = nl80211_policy,
5177 .flags = GENL_ADMIN_PERM,
5178 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5179 NL80211_FLAG_NEED_RTNL,
5180 },
5181 {
5182 .cmd = NL80211_CMD_FRAME,
5183 .doit = nl80211_tx_mgmt,
5184 .policy = nl80211_policy,
5185 .flags = GENL_ADMIN_PERM,
5186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5187 NL80211_FLAG_NEED_RTNL,
5188 },
5189 {
5190 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5191 .doit = nl80211_tx_mgmt_cancel_wait,
5192 .policy = nl80211_policy,
5193 .flags = GENL_ADMIN_PERM,
5194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5195 NL80211_FLAG_NEED_RTNL,
5196 },
5197 {
5198 .cmd = NL80211_CMD_SET_POWER_SAVE,
5199 .doit = nl80211_set_power_save,
5200 .policy = nl80211_policy,
5201 .flags = GENL_ADMIN_PERM,
5202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5203 NL80211_FLAG_NEED_RTNL,
5204 },
5205 {
5206 .cmd = NL80211_CMD_GET_POWER_SAVE,
5207 .doit = nl80211_get_power_save,
5208 .policy = nl80211_policy,
5209 /* can be retrieved by unprivileged users */
5210 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5211 NL80211_FLAG_NEED_RTNL,
5212 },
5213 {
5214 .cmd = NL80211_CMD_SET_CQM,
5215 .doit = nl80211_set_cqm,
5216 .policy = nl80211_policy,
5217 .flags = GENL_ADMIN_PERM,
5218 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5219 NL80211_FLAG_NEED_RTNL,
5220 },
5221 {
5222 .cmd = NL80211_CMD_SET_CHANNEL,
5223 .doit = nl80211_set_channel,
5224 .policy = nl80211_policy,
5225 .flags = GENL_ADMIN_PERM,
5226 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5227 NL80211_FLAG_NEED_RTNL,
5228 },
5229 {
5230 .cmd = NL80211_CMD_SET_WDS_PEER,
5231 .doit = nl80211_set_wds_peer,
5232 .policy = nl80211_policy,
5233 .flags = GENL_ADMIN_PERM,
5234 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5235 NL80211_FLAG_NEED_RTNL,
5236 },
5237 {
5238 .cmd = NL80211_CMD_JOIN_MESH,
5239 .doit = nl80211_join_mesh,
5240 .policy = nl80211_policy,
5241 .flags = GENL_ADMIN_PERM,
5242 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5243 NL80211_FLAG_NEED_RTNL,
5244 },
5245 {
5246 .cmd = NL80211_CMD_LEAVE_MESH,
5247 .doit = nl80211_leave_mesh,
5248 .policy = nl80211_policy,
5249 .flags = GENL_ADMIN_PERM,
5250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5251 NL80211_FLAG_NEED_RTNL,
5252 },
5253 };
5254
5255 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5256 .name = "mlme",
5257 };
5258
5259 /* multicast groups */
5260 static struct genl_multicast_group nl80211_config_mcgrp = {
5261 .name = "config",
5262 };
5263 static struct genl_multicast_group nl80211_scan_mcgrp = {
5264 .name = "scan",
5265 };
5266 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5267 .name = "regulatory",
5268 };
5269
5270 /* notification functions */
5271
5272 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5273 {
5274 struct sk_buff *msg;
5275
5276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5277 if (!msg)
5278 return;
5279
5280 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5281 nlmsg_free(msg);
5282 return;
5283 }
5284
5285 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5286 nl80211_config_mcgrp.id, GFP_KERNEL);
5287 }
5288
5289 static int nl80211_add_scan_req(struct sk_buff *msg,
5290 struct cfg80211_registered_device *rdev)
5291 {
5292 struct cfg80211_scan_request *req = rdev->scan_req;
5293 struct nlattr *nest;
5294 int i;
5295
5296 ASSERT_RDEV_LOCK(rdev);
5297
5298 if (WARN_ON(!req))
5299 return 0;
5300
5301 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5302 if (!nest)
5303 goto nla_put_failure;
5304 for (i = 0; i < req->n_ssids; i++)
5305 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5306 nla_nest_end(msg, nest);
5307
5308 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5309 if (!nest)
5310 goto nla_put_failure;
5311 for (i = 0; i < req->n_channels; i++)
5312 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5313 nla_nest_end(msg, nest);
5314
5315 if (req->ie)
5316 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5317
5318 return 0;
5319 nla_put_failure:
5320 return -ENOBUFS;
5321 }
5322
5323 static int nl80211_send_scan_msg(struct sk_buff *msg,
5324 struct cfg80211_registered_device *rdev,
5325 struct net_device *netdev,
5326 u32 pid, u32 seq, int flags,
5327 u32 cmd)
5328 {
5329 void *hdr;
5330
5331 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5332 if (!hdr)
5333 return -1;
5334
5335 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5336 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5337
5338 /* ignore errors and send incomplete event anyway */
5339 nl80211_add_scan_req(msg, rdev);
5340
5341 return genlmsg_end(msg, hdr);
5342
5343 nla_put_failure:
5344 genlmsg_cancel(msg, hdr);
5345 return -EMSGSIZE;
5346 }
5347
5348 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5349 struct net_device *netdev)
5350 {
5351 struct sk_buff *msg;
5352
5353 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5354 if (!msg)
5355 return;
5356
5357 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5358 NL80211_CMD_TRIGGER_SCAN) < 0) {
5359 nlmsg_free(msg);
5360 return;
5361 }
5362
5363 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5364 nl80211_scan_mcgrp.id, GFP_KERNEL);
5365 }
5366
5367 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5368 struct net_device *netdev)
5369 {
5370 struct sk_buff *msg;
5371
5372 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5373 if (!msg)
5374 return;
5375
5376 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5377 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5378 nlmsg_free(msg);
5379 return;
5380 }
5381
5382 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5383 nl80211_scan_mcgrp.id, GFP_KERNEL);
5384 }
5385
5386 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5387 struct net_device *netdev)
5388 {
5389 struct sk_buff *msg;
5390
5391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5392 if (!msg)
5393 return;
5394
5395 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5396 NL80211_CMD_SCAN_ABORTED) < 0) {
5397 nlmsg_free(msg);
5398 return;
5399 }
5400
5401 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5402 nl80211_scan_mcgrp.id, GFP_KERNEL);
5403 }
5404
5405 /*
5406 * This can happen on global regulatory changes or device specific settings
5407 * based on custom world regulatory domains.
5408 */
5409 void nl80211_send_reg_change_event(struct regulatory_request *request)
5410 {
5411 struct sk_buff *msg;
5412 void *hdr;
5413
5414 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5415 if (!msg)
5416 return;
5417
5418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5419 if (!hdr) {
5420 nlmsg_free(msg);
5421 return;
5422 }
5423
5424 /* Userspace can always count this one always being set */
5425 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5426
5427 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5428 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5429 NL80211_REGDOM_TYPE_WORLD);
5430 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5431 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5432 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5433 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5434 request->intersect)
5435 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5436 NL80211_REGDOM_TYPE_INTERSECTION);
5437 else {
5438 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5439 NL80211_REGDOM_TYPE_COUNTRY);
5440 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5441 }
5442
5443 if (wiphy_idx_valid(request->wiphy_idx))
5444 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5445
5446 if (genlmsg_end(msg, hdr) < 0) {
5447 nlmsg_free(msg);
5448 return;
5449 }
5450
5451 rcu_read_lock();
5452 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5453 GFP_ATOMIC);
5454 rcu_read_unlock();
5455
5456 return;
5457
5458 nla_put_failure:
5459 genlmsg_cancel(msg, hdr);
5460 nlmsg_free(msg);
5461 }
5462
5463 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5464 struct net_device *netdev,
5465 const u8 *buf, size_t len,
5466 enum nl80211_commands cmd, gfp_t gfp)
5467 {
5468 struct sk_buff *msg;
5469 void *hdr;
5470
5471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5472 if (!msg)
5473 return;
5474
5475 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5476 if (!hdr) {
5477 nlmsg_free(msg);
5478 return;
5479 }
5480
5481 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5482 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5483 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5484
5485 if (genlmsg_end(msg, hdr) < 0) {
5486 nlmsg_free(msg);
5487 return;
5488 }
5489
5490 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5491 nl80211_mlme_mcgrp.id, gfp);
5492 return;
5493
5494 nla_put_failure:
5495 genlmsg_cancel(msg, hdr);
5496 nlmsg_free(msg);
5497 }
5498
5499 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
5500 struct net_device *netdev, const u8 *buf,
5501 size_t len, gfp_t gfp)
5502 {
5503 nl80211_send_mlme_event(rdev, netdev, buf, len,
5504 NL80211_CMD_AUTHENTICATE, gfp);
5505 }
5506
5507 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5508 struct net_device *netdev, const u8 *buf,
5509 size_t len, gfp_t gfp)
5510 {
5511 nl80211_send_mlme_event(rdev, netdev, buf, len,
5512 NL80211_CMD_ASSOCIATE, gfp);
5513 }
5514
5515 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
5516 struct net_device *netdev, const u8 *buf,
5517 size_t len, gfp_t gfp)
5518 {
5519 nl80211_send_mlme_event(rdev, netdev, buf, len,
5520 NL80211_CMD_DEAUTHENTICATE, gfp);
5521 }
5522
5523 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5524 struct net_device *netdev, const u8 *buf,
5525 size_t len, gfp_t gfp)
5526 {
5527 nl80211_send_mlme_event(rdev, netdev, buf, len,
5528 NL80211_CMD_DISASSOCIATE, gfp);
5529 }
5530
5531 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
5532 struct net_device *netdev, const u8 *buf,
5533 size_t len, gfp_t gfp)
5534 {
5535 nl80211_send_mlme_event(rdev, netdev, buf, len,
5536 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
5537 }
5538
5539 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
5540 struct net_device *netdev, const u8 *buf,
5541 size_t len, gfp_t gfp)
5542 {
5543 nl80211_send_mlme_event(rdev, netdev, buf, len,
5544 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
5545 }
5546
5547 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5548 struct net_device *netdev, int cmd,
5549 const u8 *addr, gfp_t gfp)
5550 {
5551 struct sk_buff *msg;
5552 void *hdr;
5553
5554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5555 if (!msg)
5556 return;
5557
5558 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5559 if (!hdr) {
5560 nlmsg_free(msg);
5561 return;
5562 }
5563
5564 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5565 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5566 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5567 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5568
5569 if (genlmsg_end(msg, hdr) < 0) {
5570 nlmsg_free(msg);
5571 return;
5572 }
5573
5574 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5575 nl80211_mlme_mcgrp.id, gfp);
5576 return;
5577
5578 nla_put_failure:
5579 genlmsg_cancel(msg, hdr);
5580 nlmsg_free(msg);
5581 }
5582
5583 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
5584 struct net_device *netdev, const u8 *addr,
5585 gfp_t gfp)
5586 {
5587 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
5588 addr, gfp);
5589 }
5590
5591 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
5592 struct net_device *netdev, const u8 *addr,
5593 gfp_t gfp)
5594 {
5595 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5596 addr, gfp);
5597 }
5598
5599 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5600 struct net_device *netdev, const u8 *bssid,
5601 const u8 *req_ie, size_t req_ie_len,
5602 const u8 *resp_ie, size_t resp_ie_len,
5603 u16 status, gfp_t gfp)
5604 {
5605 struct sk_buff *msg;
5606 void *hdr;
5607
5608 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5609 if (!msg)
5610 return;
5611
5612 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5613 if (!hdr) {
5614 nlmsg_free(msg);
5615 return;
5616 }
5617
5618 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5619 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5620 if (bssid)
5621 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5622 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5623 if (req_ie)
5624 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5625 if (resp_ie)
5626 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5627
5628 if (genlmsg_end(msg, hdr) < 0) {
5629 nlmsg_free(msg);
5630 return;
5631 }
5632
5633 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5634 nl80211_mlme_mcgrp.id, gfp);
5635 return;
5636
5637 nla_put_failure:
5638 genlmsg_cancel(msg, hdr);
5639 nlmsg_free(msg);
5640
5641 }
5642
5643 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5644 struct net_device *netdev, const u8 *bssid,
5645 const u8 *req_ie, size_t req_ie_len,
5646 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5647 {
5648 struct sk_buff *msg;
5649 void *hdr;
5650
5651 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5652 if (!msg)
5653 return;
5654
5655 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5656 if (!hdr) {
5657 nlmsg_free(msg);
5658 return;
5659 }
5660
5661 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5662 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5663 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5664 if (req_ie)
5665 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5666 if (resp_ie)
5667 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5668
5669 if (genlmsg_end(msg, hdr) < 0) {
5670 nlmsg_free(msg);
5671 return;
5672 }
5673
5674 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5675 nl80211_mlme_mcgrp.id, gfp);
5676 return;
5677
5678 nla_put_failure:
5679 genlmsg_cancel(msg, hdr);
5680 nlmsg_free(msg);
5681
5682 }
5683
5684 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5685 struct net_device *netdev, u16 reason,
5686 const u8 *ie, size_t ie_len, bool from_ap)
5687 {
5688 struct sk_buff *msg;
5689 void *hdr;
5690
5691 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5692 if (!msg)
5693 return;
5694
5695 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5696 if (!hdr) {
5697 nlmsg_free(msg);
5698 return;
5699 }
5700
5701 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5702 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5703 if (from_ap && reason)
5704 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5705 if (from_ap)
5706 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5707 if (ie)
5708 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5709
5710 if (genlmsg_end(msg, hdr) < 0) {
5711 nlmsg_free(msg);
5712 return;
5713 }
5714
5715 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5716 nl80211_mlme_mcgrp.id, GFP_KERNEL);
5717 return;
5718
5719 nla_put_failure:
5720 genlmsg_cancel(msg, hdr);
5721 nlmsg_free(msg);
5722
5723 }
5724
5725 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5726 struct net_device *netdev, const u8 *bssid,
5727 gfp_t gfp)
5728 {
5729 struct sk_buff *msg;
5730 void *hdr;
5731
5732 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5733 if (!msg)
5734 return;
5735
5736 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5737 if (!hdr) {
5738 nlmsg_free(msg);
5739 return;
5740 }
5741
5742 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5744 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5745
5746 if (genlmsg_end(msg, hdr) < 0) {
5747 nlmsg_free(msg);
5748 return;
5749 }
5750
5751 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5752 nl80211_mlme_mcgrp.id, gfp);
5753 return;
5754
5755 nla_put_failure:
5756 genlmsg_cancel(msg, hdr);
5757 nlmsg_free(msg);
5758 }
5759
5760 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5761 struct net_device *netdev, const u8 *addr,
5762 enum nl80211_key_type key_type, int key_id,
5763 const u8 *tsc, gfp_t gfp)
5764 {
5765 struct sk_buff *msg;
5766 void *hdr;
5767
5768 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5769 if (!msg)
5770 return;
5771
5772 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5773 if (!hdr) {
5774 nlmsg_free(msg);
5775 return;
5776 }
5777
5778 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5779 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5780 if (addr)
5781 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5782 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5783 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5784 if (tsc)
5785 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5786
5787 if (genlmsg_end(msg, hdr) < 0) {
5788 nlmsg_free(msg);
5789 return;
5790 }
5791
5792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5793 nl80211_mlme_mcgrp.id, gfp);
5794 return;
5795
5796 nla_put_failure:
5797 genlmsg_cancel(msg, hdr);
5798 nlmsg_free(msg);
5799 }
5800
5801 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5802 struct ieee80211_channel *channel_before,
5803 struct ieee80211_channel *channel_after)
5804 {
5805 struct sk_buff *msg;
5806 void *hdr;
5807 struct nlattr *nl_freq;
5808
5809 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
5810 if (!msg)
5811 return;
5812
5813 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5814 if (!hdr) {
5815 nlmsg_free(msg);
5816 return;
5817 }
5818
5819 /*
5820 * Since we are applying the beacon hint to a wiphy we know its
5821 * wiphy_idx is valid
5822 */
5823 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5824
5825 /* Before */
5826 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5827 if (!nl_freq)
5828 goto nla_put_failure;
5829 if (nl80211_msg_put_channel(msg, channel_before))
5830 goto nla_put_failure;
5831 nla_nest_end(msg, nl_freq);
5832
5833 /* After */
5834 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5835 if (!nl_freq)
5836 goto nla_put_failure;
5837 if (nl80211_msg_put_channel(msg, channel_after))
5838 goto nla_put_failure;
5839 nla_nest_end(msg, nl_freq);
5840
5841 if (genlmsg_end(msg, hdr) < 0) {
5842 nlmsg_free(msg);
5843 return;
5844 }
5845
5846 rcu_read_lock();
5847 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5848 GFP_ATOMIC);
5849 rcu_read_unlock();
5850
5851 return;
5852
5853 nla_put_failure:
5854 genlmsg_cancel(msg, hdr);
5855 nlmsg_free(msg);
5856 }
5857
5858 static void nl80211_send_remain_on_chan_event(
5859 int cmd, struct cfg80211_registered_device *rdev,
5860 struct net_device *netdev, u64 cookie,
5861 struct ieee80211_channel *chan,
5862 enum nl80211_channel_type channel_type,
5863 unsigned int duration, gfp_t gfp)
5864 {
5865 struct sk_buff *msg;
5866 void *hdr;
5867
5868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5869 if (!msg)
5870 return;
5871
5872 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5873 if (!hdr) {
5874 nlmsg_free(msg);
5875 return;
5876 }
5877
5878 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5879 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5880 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5881 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5882 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5883
5884 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5885 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5886
5887 if (genlmsg_end(msg, hdr) < 0) {
5888 nlmsg_free(msg);
5889 return;
5890 }
5891
5892 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5893 nl80211_mlme_mcgrp.id, gfp);
5894 return;
5895
5896 nla_put_failure:
5897 genlmsg_cancel(msg, hdr);
5898 nlmsg_free(msg);
5899 }
5900
5901 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5902 struct net_device *netdev, u64 cookie,
5903 struct ieee80211_channel *chan,
5904 enum nl80211_channel_type channel_type,
5905 unsigned int duration, gfp_t gfp)
5906 {
5907 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5908 rdev, netdev, cookie, chan,
5909 channel_type, duration, gfp);
5910 }
5911
5912 void nl80211_send_remain_on_channel_cancel(
5913 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5914 u64 cookie, struct ieee80211_channel *chan,
5915 enum nl80211_channel_type channel_type, gfp_t gfp)
5916 {
5917 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5918 rdev, netdev, cookie, chan,
5919 channel_type, 0, gfp);
5920 }
5921
5922 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5923 struct net_device *dev, const u8 *mac_addr,
5924 struct station_info *sinfo, gfp_t gfp)
5925 {
5926 struct sk_buff *msg;
5927
5928 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5929 if (!msg)
5930 return;
5931
5932 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5933 nlmsg_free(msg);
5934 return;
5935 }
5936
5937 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5938 nl80211_mlme_mcgrp.id, gfp);
5939 }
5940
5941 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5942 struct net_device *netdev, u32 nlpid,
5943 int freq, const u8 *buf, size_t len, gfp_t gfp)
5944 {
5945 struct sk_buff *msg;
5946 void *hdr;
5947 int err;
5948
5949 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5950 if (!msg)
5951 return -ENOMEM;
5952
5953 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
5954 if (!hdr) {
5955 nlmsg_free(msg);
5956 return -ENOMEM;
5957 }
5958
5959 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5960 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5961 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5962 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5963
5964 err = genlmsg_end(msg, hdr);
5965 if (err < 0) {
5966 nlmsg_free(msg);
5967 return err;
5968 }
5969
5970 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5971 if (err < 0)
5972 return err;
5973 return 0;
5974
5975 nla_put_failure:
5976 genlmsg_cancel(msg, hdr);
5977 nlmsg_free(msg);
5978 return -ENOBUFS;
5979 }
5980
5981 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
5982 struct net_device *netdev, u64 cookie,
5983 const u8 *buf, size_t len, bool ack,
5984 gfp_t gfp)
5985 {
5986 struct sk_buff *msg;
5987 void *hdr;
5988
5989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5990 if (!msg)
5991 return;
5992
5993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
5994 if (!hdr) {
5995 nlmsg_free(msg);
5996 return;
5997 }
5998
5999 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6000 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6001 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6002 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6003 if (ack)
6004 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6005
6006 if (genlmsg_end(msg, hdr) < 0) {
6007 nlmsg_free(msg);
6008 return;
6009 }
6010
6011 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6012 return;
6013
6014 nla_put_failure:
6015 genlmsg_cancel(msg, hdr);
6016 nlmsg_free(msg);
6017 }
6018
6019 void
6020 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6021 struct net_device *netdev,
6022 enum nl80211_cqm_rssi_threshold_event rssi_event,
6023 gfp_t gfp)
6024 {
6025 struct sk_buff *msg;
6026 struct nlattr *pinfoattr;
6027 void *hdr;
6028
6029 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6030 if (!msg)
6031 return;
6032
6033 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6034 if (!hdr) {
6035 nlmsg_free(msg);
6036 return;
6037 }
6038
6039 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6040 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6041
6042 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6043 if (!pinfoattr)
6044 goto nla_put_failure;
6045
6046 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6047 rssi_event);
6048
6049 nla_nest_end(msg, pinfoattr);
6050
6051 if (genlmsg_end(msg, hdr) < 0) {
6052 nlmsg_free(msg);
6053 return;
6054 }
6055
6056 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6057 nl80211_mlme_mcgrp.id, gfp);
6058 return;
6059
6060 nla_put_failure:
6061 genlmsg_cancel(msg, hdr);
6062 nlmsg_free(msg);
6063 }
6064
6065 void
6066 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6067 struct net_device *netdev, const u8 *peer,
6068 u32 num_packets, gfp_t gfp)
6069 {
6070 struct sk_buff *msg;
6071 struct nlattr *pinfoattr;
6072 void *hdr;
6073
6074 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6075 if (!msg)
6076 return;
6077
6078 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6079 if (!hdr) {
6080 nlmsg_free(msg);
6081 return;
6082 }
6083
6084 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6085 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6086 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6087
6088 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6089 if (!pinfoattr)
6090 goto nla_put_failure;
6091
6092 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6093
6094 nla_nest_end(msg, pinfoattr);
6095
6096 if (genlmsg_end(msg, hdr) < 0) {
6097 nlmsg_free(msg);
6098 return;
6099 }
6100
6101 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6102 nl80211_mlme_mcgrp.id, gfp);
6103 return;
6104
6105 nla_put_failure:
6106 genlmsg_cancel(msg, hdr);
6107 nlmsg_free(msg);
6108 }
6109
6110 static int nl80211_netlink_notify(struct notifier_block * nb,
6111 unsigned long state,
6112 void *_notify)
6113 {
6114 struct netlink_notify *notify = _notify;
6115 struct cfg80211_registered_device *rdev;
6116 struct wireless_dev *wdev;
6117
6118 if (state != NETLINK_URELEASE)
6119 return NOTIFY_DONE;
6120
6121 rcu_read_lock();
6122
6123 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6124 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6125 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6126
6127 rcu_read_unlock();
6128
6129 return NOTIFY_DONE;
6130 }
6131
6132 static struct notifier_block nl80211_netlink_notifier = {
6133 .notifier_call = nl80211_netlink_notify,
6134 };
6135
6136 /* initialisation/exit functions */
6137
6138 int nl80211_init(void)
6139 {
6140 int err;
6141
6142 err = genl_register_family_with_ops(&nl80211_fam,
6143 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6144 if (err)
6145 return err;
6146
6147 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6148 if (err)
6149 goto err_out;
6150
6151 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6152 if (err)
6153 goto err_out;
6154
6155 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6156 if (err)
6157 goto err_out;
6158
6159 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6160 if (err)
6161 goto err_out;
6162
6163 #ifdef CONFIG_NL80211_TESTMODE
6164 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6165 if (err)
6166 goto err_out;
6167 #endif
6168
6169 err = netlink_register_notifier(&nl80211_netlink_notifier);
6170 if (err)
6171 goto err_out;
6172
6173 return 0;
6174 err_out:
6175 genl_unregister_family(&nl80211_fam);
6176 return err;
6177 }
6178
6179 void nl80211_exit(void)
6180 {
6181 netlink_unregister_notifier(&nl80211_netlink_notifier);
6182 genl_unregister_family(&nl80211_fam);
6183 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree