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hwmon: (sht15) fix bad error code
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob0c2b8080547f480fe244f2a68c776bd64b99e504
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] = { .len = ETH_ALEN },
87 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
88
89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
91 .len = WLAN_MAX_KEY_LEN },
92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
97
98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
101 .len = IEEE80211_MAX_DATA_LEN },
102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_DATA_LEN },
104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
108 .len = NL80211_MAX_SUPP_RATES },
109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
113 .len = IEEE80211_MAX_MESH_ID_LEN },
114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
115
116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
118
119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
123 .len = NL80211_MAX_SUPP_RATES },
124 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
125
126 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
127 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
128
129 [NL80211_ATTR_HT_CAPABILITY] = { .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 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
176 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
177 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
178 };
179
180 /* policy for the key attributes */
181 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
182 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
183 [NL80211_KEY_IDX] = { .type = NLA_U8 },
184 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
185 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
186 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
187 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
188 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
189 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
190 };
191
192 /* policy for the key default flags */
193 static const struct nla_policy
194 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
195 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
196 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
197 };
198
199 /* policy for WoWLAN attributes */
200 static const struct nla_policy
201 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
202 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
203 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
204 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
205 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
206 };
207
208 /* ifidx get helper */
209 static int nl80211_get_ifidx(struct netlink_callback *cb)
210 {
211 int res;
212
213 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
214 nl80211_fam.attrbuf, nl80211_fam.maxattr,
215 nl80211_policy);
216 if (res)
217 return res;
218
219 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
220 return -EINVAL;
221
222 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
223 if (!res)
224 return -EINVAL;
225 return res;
226 }
227
228 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
229 struct netlink_callback *cb,
230 struct cfg80211_registered_device **rdev,
231 struct net_device **dev)
232 {
233 int ifidx = cb->args[0];
234 int err;
235
236 if (!ifidx)
237 ifidx = nl80211_get_ifidx(cb);
238 if (ifidx < 0)
239 return ifidx;
240
241 cb->args[0] = ifidx;
242
243 rtnl_lock();
244
245 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
246 if (!*dev) {
247 err = -ENODEV;
248 goto out_rtnl;
249 }
250
251 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
252 if (IS_ERR(*rdev)) {
253 err = PTR_ERR(*rdev);
254 goto out_rtnl;
255 }
256
257 return 0;
258 out_rtnl:
259 rtnl_unlock();
260 return err;
261 }
262
263 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
264 {
265 cfg80211_unlock_rdev(rdev);
266 rtnl_unlock();
267 }
268
269 /* IE validation */
270 static bool is_valid_ie_attr(const struct nlattr *attr)
271 {
272 const u8 *pos;
273 int len;
274
275 if (!attr)
276 return true;
277
278 pos = nla_data(attr);
279 len = nla_len(attr);
280
281 while (len) {
282 u8 elemlen;
283
284 if (len < 2)
285 return false;
286 len -= 2;
287
288 elemlen = pos[1];
289 if (elemlen > len)
290 return false;
291
292 len -= elemlen;
293 pos += 2 + elemlen;
294 }
295
296 return true;
297 }
298
299 /* message building helper */
300 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
301 int flags, u8 cmd)
302 {
303 /* since there is no private header just add the generic one */
304 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
305 }
306
307 static int nl80211_msg_put_channel(struct sk_buff *msg,
308 struct ieee80211_channel *chan)
309 {
310 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
311 chan->center_freq);
312
313 if (chan->flags & IEEE80211_CHAN_DISABLED)
314 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
315 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
316 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
317 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
318 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
319 if (chan->flags & IEEE80211_CHAN_RADAR)
320 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
321
322 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
323 DBM_TO_MBM(chan->max_power));
324
325 return 0;
326
327 nla_put_failure:
328 return -ENOBUFS;
329 }
330
331 /* netlink command implementations */
332
333 struct key_parse {
334 struct key_params p;
335 int idx;
336 int type;
337 bool def, defmgmt;
338 bool def_uni, def_multi;
339 };
340
341 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
342 {
343 struct nlattr *tb[NL80211_KEY_MAX + 1];
344 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
345 nl80211_key_policy);
346 if (err)
347 return err;
348
349 k->def = !!tb[NL80211_KEY_DEFAULT];
350 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
351
352 if (k->def) {
353 k->def_uni = true;
354 k->def_multi = true;
355 }
356 if (k->defmgmt)
357 k->def_multi = true;
358
359 if (tb[NL80211_KEY_IDX])
360 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
361
362 if (tb[NL80211_KEY_DATA]) {
363 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
364 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
365 }
366
367 if (tb[NL80211_KEY_SEQ]) {
368 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
369 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
370 }
371
372 if (tb[NL80211_KEY_CIPHER])
373 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
374
375 if (tb[NL80211_KEY_TYPE]) {
376 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
377 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
378 return -EINVAL;
379 }
380
381 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
382 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
383 int err = nla_parse_nested(kdt,
384 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
385 tb[NL80211_KEY_DEFAULT_TYPES],
386 nl80211_key_default_policy);
387 if (err)
388 return err;
389
390 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
391 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
392 }
393
394 return 0;
395 }
396
397 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
398 {
399 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
400 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
401 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
402 }
403
404 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
405 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
406 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
407 }
408
409 if (info->attrs[NL80211_ATTR_KEY_IDX])
410 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
411
412 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
413 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
414
415 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
416 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
417
418 if (k->def) {
419 k->def_uni = true;
420 k->def_multi = true;
421 }
422 if (k->defmgmt)
423 k->def_multi = true;
424
425 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
426 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
427 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
428 return -EINVAL;
429 }
430
431 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
432 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
433 int err = nla_parse_nested(
434 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
435 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
436 nl80211_key_default_policy);
437 if (err)
438 return err;
439
440 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
441 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
442 }
443
444 return 0;
445 }
446
447 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
448 {
449 int err;
450
451 memset(k, 0, sizeof(*k));
452 k->idx = -1;
453 k->type = -1;
454
455 if (info->attrs[NL80211_ATTR_KEY])
456 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
457 else
458 err = nl80211_parse_key_old(info, k);
459
460 if (err)
461 return err;
462
463 if (k->def && k->defmgmt)
464 return -EINVAL;
465
466 if (k->defmgmt) {
467 if (k->def_uni || !k->def_multi)
468 return -EINVAL;
469 }
470
471 if (k->idx != -1) {
472 if (k->defmgmt) {
473 if (k->idx < 4 || k->idx > 5)
474 return -EINVAL;
475 } else if (k->def) {
476 if (k->idx < 0 || k->idx > 3)
477 return -EINVAL;
478 } else {
479 if (k->idx < 0 || k->idx > 5)
480 return -EINVAL;
481 }
482 }
483
484 return 0;
485 }
486
487 static struct cfg80211_cached_keys *
488 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
489 struct nlattr *keys)
490 {
491 struct key_parse parse;
492 struct nlattr *key;
493 struct cfg80211_cached_keys *result;
494 int rem, err, def = 0;
495
496 result = kzalloc(sizeof(*result), GFP_KERNEL);
497 if (!result)
498 return ERR_PTR(-ENOMEM);
499
500 result->def = -1;
501 result->defmgmt = -1;
502
503 nla_for_each_nested(key, keys, rem) {
504 memset(&parse, 0, sizeof(parse));
505 parse.idx = -1;
506
507 err = nl80211_parse_key_new(key, &parse);
508 if (err)
509 goto error;
510 err = -EINVAL;
511 if (!parse.p.key)
512 goto error;
513 if (parse.idx < 0 || parse.idx > 4)
514 goto error;
515 if (parse.def) {
516 if (def)
517 goto error;
518 def = 1;
519 result->def = parse.idx;
520 if (!parse.def_uni || !parse.def_multi)
521 goto error;
522 } else if (parse.defmgmt)
523 goto error;
524 err = cfg80211_validate_key_settings(rdev, &parse.p,
525 parse.idx, false, NULL);
526 if (err)
527 goto error;
528 result->params[parse.idx].cipher = parse.p.cipher;
529 result->params[parse.idx].key_len = parse.p.key_len;
530 result->params[parse.idx].key = result->data[parse.idx];
531 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
532 }
533
534 return result;
535 error:
536 kfree(result);
537 return ERR_PTR(err);
538 }
539
540 static int nl80211_key_allowed(struct wireless_dev *wdev)
541 {
542 ASSERT_WDEV_LOCK(wdev);
543
544 switch (wdev->iftype) {
545 case NL80211_IFTYPE_AP:
546 case NL80211_IFTYPE_AP_VLAN:
547 case NL80211_IFTYPE_P2P_GO:
548 case NL80211_IFTYPE_MESH_POINT:
549 break;
550 case NL80211_IFTYPE_ADHOC:
551 if (!wdev->current_bss)
552 return -ENOLINK;
553 break;
554 case NL80211_IFTYPE_STATION:
555 case NL80211_IFTYPE_P2P_CLIENT:
556 if (wdev->sme_state != CFG80211_SME_CONNECTED)
557 return -ENOLINK;
558 break;
559 default:
560 return -EINVAL;
561 }
562
563 return 0;
564 }
565
566 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
567 {
568 struct nlattr *nl_modes = nla_nest_start(msg, attr);
569 int i;
570
571 if (!nl_modes)
572 goto nla_put_failure;
573
574 i = 0;
575 while (ifmodes) {
576 if (ifmodes & 1)
577 NLA_PUT_FLAG(msg, i);
578 ifmodes >>= 1;
579 i++;
580 }
581
582 nla_nest_end(msg, nl_modes);
583 return 0;
584
585 nla_put_failure:
586 return -ENOBUFS;
587 }
588
589 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
590 struct sk_buff *msg)
591 {
592 struct nlattr *nl_combis;
593 int i, j;
594
595 nl_combis = nla_nest_start(msg,
596 NL80211_ATTR_INTERFACE_COMBINATIONS);
597 if (!nl_combis)
598 goto nla_put_failure;
599
600 for (i = 0; i < wiphy->n_iface_combinations; i++) {
601 const struct ieee80211_iface_combination *c;
602 struct nlattr *nl_combi, *nl_limits;
603
604 c = &wiphy->iface_combinations[i];
605
606 nl_combi = nla_nest_start(msg, i + 1);
607 if (!nl_combi)
608 goto nla_put_failure;
609
610 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
611 if (!nl_limits)
612 goto nla_put_failure;
613
614 for (j = 0; j < c->n_limits; j++) {
615 struct nlattr *nl_limit;
616
617 nl_limit = nla_nest_start(msg, j + 1);
618 if (!nl_limit)
619 goto nla_put_failure;
620 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
621 c->limits[j].max);
622 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
623 c->limits[j].types))
624 goto nla_put_failure;
625 nla_nest_end(msg, nl_limit);
626 }
627
628 nla_nest_end(msg, nl_limits);
629
630 if (c->beacon_int_infra_match)
631 NLA_PUT_FLAG(msg,
632 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
633 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
634 c->num_different_channels);
635 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
636 c->max_interfaces);
637
638 nla_nest_end(msg, nl_combi);
639 }
640
641 nla_nest_end(msg, nl_combis);
642
643 return 0;
644 nla_put_failure:
645 return -ENOBUFS;
646 }
647
648 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
649 struct cfg80211_registered_device *dev)
650 {
651 void *hdr;
652 struct nlattr *nl_bands, *nl_band;
653 struct nlattr *nl_freqs, *nl_freq;
654 struct nlattr *nl_rates, *nl_rate;
655 struct nlattr *nl_cmds;
656 enum ieee80211_band band;
657 struct ieee80211_channel *chan;
658 struct ieee80211_rate *rate;
659 int i;
660 const struct ieee80211_txrx_stypes *mgmt_stypes =
661 dev->wiphy.mgmt_stypes;
662
663 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
664 if (!hdr)
665 return -1;
666
667 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
668 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
669
670 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
671 cfg80211_rdev_list_generation);
672
673 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
674 dev->wiphy.retry_short);
675 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
676 dev->wiphy.retry_long);
677 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
678 dev->wiphy.frag_threshold);
679 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
680 dev->wiphy.rts_threshold);
681 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
682 dev->wiphy.coverage_class);
683 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
684 dev->wiphy.max_scan_ssids);
685 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
686 dev->wiphy.max_scan_ie_len);
687
688 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
689 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
690 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
691 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
692
693 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
694 sizeof(u32) * dev->wiphy.n_cipher_suites,
695 dev->wiphy.cipher_suites);
696
697 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
698 dev->wiphy.max_num_pmkids);
699
700 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
701 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
702
703 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
704 dev->wiphy.available_antennas_tx);
705 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
706 dev->wiphy.available_antennas_rx);
707
708 if ((dev->wiphy.available_antennas_tx ||
709 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
710 u32 tx_ant = 0, rx_ant = 0;
711 int res;
712 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
713 if (!res) {
714 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
716 }
717 }
718
719 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
720 dev->wiphy.interface_modes))
721 goto nla_put_failure;
722
723 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
724 if (!nl_bands)
725 goto nla_put_failure;
726
727 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
728 if (!dev->wiphy.bands[band])
729 continue;
730
731 nl_band = nla_nest_start(msg, band);
732 if (!nl_band)
733 goto nla_put_failure;
734
735 /* add HT info */
736 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
737 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
738 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
739 &dev->wiphy.bands[band]->ht_cap.mcs);
740 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
741 dev->wiphy.bands[band]->ht_cap.cap);
742 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
743 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
744 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
745 dev->wiphy.bands[band]->ht_cap.ampdu_density);
746 }
747
748 /* add frequencies */
749 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
750 if (!nl_freqs)
751 goto nla_put_failure;
752
753 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
754 nl_freq = nla_nest_start(msg, i);
755 if (!nl_freq)
756 goto nla_put_failure;
757
758 chan = &dev->wiphy.bands[band]->channels[i];
759
760 if (nl80211_msg_put_channel(msg, chan))
761 goto nla_put_failure;
762
763 nla_nest_end(msg, nl_freq);
764 }
765
766 nla_nest_end(msg, nl_freqs);
767
768 /* add bitrates */
769 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
770 if (!nl_rates)
771 goto nla_put_failure;
772
773 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
774 nl_rate = nla_nest_start(msg, i);
775 if (!nl_rate)
776 goto nla_put_failure;
777
778 rate = &dev->wiphy.bands[band]->bitrates[i];
779 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
780 rate->bitrate);
781 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
782 NLA_PUT_FLAG(msg,
783 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
784
785 nla_nest_end(msg, nl_rate);
786 }
787
788 nla_nest_end(msg, nl_rates);
789
790 nla_nest_end(msg, nl_band);
791 }
792 nla_nest_end(msg, nl_bands);
793
794 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
795 if (!nl_cmds)
796 goto nla_put_failure;
797
798 i = 0;
799 #define CMD(op, n) \
800 do { \
801 if (dev->ops->op) { \
802 i++; \
803 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
804 } \
805 } while (0)
806
807 CMD(add_virtual_intf, NEW_INTERFACE);
808 CMD(change_virtual_intf, SET_INTERFACE);
809 CMD(add_key, NEW_KEY);
810 CMD(add_beacon, NEW_BEACON);
811 CMD(add_station, NEW_STATION);
812 CMD(add_mpath, NEW_MPATH);
813 CMD(update_mesh_config, SET_MESH_CONFIG);
814 CMD(change_bss, SET_BSS);
815 CMD(auth, AUTHENTICATE);
816 CMD(assoc, ASSOCIATE);
817 CMD(deauth, DEAUTHENTICATE);
818 CMD(disassoc, DISASSOCIATE);
819 CMD(join_ibss, JOIN_IBSS);
820 CMD(join_mesh, JOIN_MESH);
821 CMD(set_pmksa, SET_PMKSA);
822 CMD(del_pmksa, DEL_PMKSA);
823 CMD(flush_pmksa, FLUSH_PMKSA);
824 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
825 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
826 CMD(mgmt_tx, FRAME);
827 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
828 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
829 i++;
830 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
831 }
832 CMD(set_channel, SET_CHANNEL);
833 CMD(set_wds_peer, SET_WDS_PEER);
834 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
835 CMD(sched_scan_start, START_SCHED_SCAN);
836
837 #undef CMD
838
839 if (dev->ops->connect || dev->ops->auth) {
840 i++;
841 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
842 }
843
844 if (dev->ops->disconnect || dev->ops->deauth) {
845 i++;
846 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
847 }
848
849 nla_nest_end(msg, nl_cmds);
850
851 if (dev->ops->remain_on_channel)
852 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
853 dev->wiphy.max_remain_on_channel_duration);
854
855 /* for now at least assume all drivers have it */
856 if (dev->ops->mgmt_tx)
857 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
858
859 if (mgmt_stypes) {
860 u16 stypes;
861 struct nlattr *nl_ftypes, *nl_ifs;
862 enum nl80211_iftype ift;
863
864 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
865 if (!nl_ifs)
866 goto nla_put_failure;
867
868 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
869 nl_ftypes = nla_nest_start(msg, ift);
870 if (!nl_ftypes)
871 goto nla_put_failure;
872 i = 0;
873 stypes = mgmt_stypes[ift].tx;
874 while (stypes) {
875 if (stypes & 1)
876 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
877 (i << 4) | IEEE80211_FTYPE_MGMT);
878 stypes >>= 1;
879 i++;
880 }
881 nla_nest_end(msg, nl_ftypes);
882 }
883
884 nla_nest_end(msg, nl_ifs);
885
886 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
887 if (!nl_ifs)
888 goto nla_put_failure;
889
890 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
891 nl_ftypes = nla_nest_start(msg, ift);
892 if (!nl_ftypes)
893 goto nla_put_failure;
894 i = 0;
895 stypes = mgmt_stypes[ift].rx;
896 while (stypes) {
897 if (stypes & 1)
898 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
899 (i << 4) | IEEE80211_FTYPE_MGMT);
900 stypes >>= 1;
901 i++;
902 }
903 nla_nest_end(msg, nl_ftypes);
904 }
905 nla_nest_end(msg, nl_ifs);
906 }
907
908 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
909 struct nlattr *nl_wowlan;
910
911 nl_wowlan = nla_nest_start(msg,
912 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
913 if (!nl_wowlan)
914 goto nla_put_failure;
915
916 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
917 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
918 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
919 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
920 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
921 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
922 if (dev->wiphy.wowlan.n_patterns) {
923 struct nl80211_wowlan_pattern_support pat = {
924 .max_patterns = dev->wiphy.wowlan.n_patterns,
925 .min_pattern_len =
926 dev->wiphy.wowlan.pattern_min_len,
927 .max_pattern_len =
928 dev->wiphy.wowlan.pattern_max_len,
929 };
930 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
931 sizeof(pat), &pat);
932 }
933
934 nla_nest_end(msg, nl_wowlan);
935 }
936
937 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
938 dev->wiphy.software_iftypes))
939 goto nla_put_failure;
940
941 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
942 goto nla_put_failure;
943
944 return genlmsg_end(msg, hdr);
945
946 nla_put_failure:
947 genlmsg_cancel(msg, hdr);
948 return -EMSGSIZE;
949 }
950
951 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
952 {
953 int idx = 0;
954 int start = cb->args[0];
955 struct cfg80211_registered_device *dev;
956
957 mutex_lock(&cfg80211_mutex);
958 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
959 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
960 continue;
961 if (++idx <= start)
962 continue;
963 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
964 cb->nlh->nlmsg_seq, NLM_F_MULTI,
965 dev) < 0) {
966 idx--;
967 break;
968 }
969 }
970 mutex_unlock(&cfg80211_mutex);
971
972 cb->args[0] = idx;
973
974 return skb->len;
975 }
976
977 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
978 {
979 struct sk_buff *msg;
980 struct cfg80211_registered_device *dev = info->user_ptr[0];
981
982 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
983 if (!msg)
984 return -ENOMEM;
985
986 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
987 nlmsg_free(msg);
988 return -ENOBUFS;
989 }
990
991 return genlmsg_reply(msg, info);
992 }
993
994 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
995 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
996 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
997 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
998 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
999 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1000 };
1001
1002 static int parse_txq_params(struct nlattr *tb[],
1003 struct ieee80211_txq_params *txq_params)
1004 {
1005 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1006 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1007 !tb[NL80211_TXQ_ATTR_AIFS])
1008 return -EINVAL;
1009
1010 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1011 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1012 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1013 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1014 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1015
1016 return 0;
1017 }
1018
1019 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1020 {
1021 /*
1022 * You can only set the channel explicitly for AP, mesh
1023 * and WDS type interfaces; all others have their channel
1024 * managed via their respective "establish a connection"
1025 * command (connect, join, ...)
1026 *
1027 * Monitors are special as they are normally slaved to
1028 * whatever else is going on, so they behave as though
1029 * you tried setting the wiphy channel itself.
1030 */
1031 return !wdev ||
1032 wdev->iftype == NL80211_IFTYPE_AP ||
1033 wdev->iftype == NL80211_IFTYPE_WDS ||
1034 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1035 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1036 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1037 }
1038
1039 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1040 struct wireless_dev *wdev,
1041 struct genl_info *info)
1042 {
1043 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1044 u32 freq;
1045 int result;
1046
1047 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1048 return -EINVAL;
1049
1050 if (!nl80211_can_set_dev_channel(wdev))
1051 return -EOPNOTSUPP;
1052
1053 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1054 channel_type = nla_get_u32(info->attrs[
1055 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1056 if (channel_type != NL80211_CHAN_NO_HT &&
1057 channel_type != NL80211_CHAN_HT20 &&
1058 channel_type != NL80211_CHAN_HT40PLUS &&
1059 channel_type != NL80211_CHAN_HT40MINUS)
1060 return -EINVAL;
1061 }
1062
1063 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1064
1065 mutex_lock(&rdev->devlist_mtx);
1066 if (wdev) {
1067 wdev_lock(wdev);
1068 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1069 wdev_unlock(wdev);
1070 } else {
1071 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1072 }
1073 mutex_unlock(&rdev->devlist_mtx);
1074
1075 return result;
1076 }
1077
1078 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1079 {
1080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1081 struct net_device *netdev = info->user_ptr[1];
1082
1083 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1084 }
1085
1086 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1087 {
1088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1089 struct net_device *dev = info->user_ptr[1];
1090 struct wireless_dev *wdev = dev->ieee80211_ptr;
1091 const u8 *bssid;
1092
1093 if (!info->attrs[NL80211_ATTR_MAC])
1094 return -EINVAL;
1095
1096 if (netif_running(dev))
1097 return -EBUSY;
1098
1099 if (!rdev->ops->set_wds_peer)
1100 return -EOPNOTSUPP;
1101
1102 if (wdev->iftype != NL80211_IFTYPE_WDS)
1103 return -EOPNOTSUPP;
1104
1105 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1106 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1107 }
1108
1109
1110 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1111 {
1112 struct cfg80211_registered_device *rdev;
1113 struct net_device *netdev = NULL;
1114 struct wireless_dev *wdev;
1115 int result = 0, rem_txq_params = 0;
1116 struct nlattr *nl_txq_params;
1117 u32 changed;
1118 u8 retry_short = 0, retry_long = 0;
1119 u32 frag_threshold = 0, rts_threshold = 0;
1120 u8 coverage_class = 0;
1121
1122 /*
1123 * Try to find the wiphy and netdev. Normally this
1124 * function shouldn't need the netdev, but this is
1125 * done for backward compatibility -- previously
1126 * setting the channel was done per wiphy, but now
1127 * it is per netdev. Previous userland like hostapd
1128 * also passed a netdev to set_wiphy, so that it is
1129 * possible to let that go to the right netdev!
1130 */
1131 mutex_lock(&cfg80211_mutex);
1132
1133 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1134 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1135
1136 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1137 if (netdev && netdev->ieee80211_ptr) {
1138 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1139 mutex_lock(&rdev->mtx);
1140 } else
1141 netdev = NULL;
1142 }
1143
1144 if (!netdev) {
1145 rdev = __cfg80211_rdev_from_info(info);
1146 if (IS_ERR(rdev)) {
1147 mutex_unlock(&cfg80211_mutex);
1148 return PTR_ERR(rdev);
1149 }
1150 wdev = NULL;
1151 netdev = NULL;
1152 result = 0;
1153
1154 mutex_lock(&rdev->mtx);
1155 } else if (netif_running(netdev) &&
1156 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1157 wdev = netdev->ieee80211_ptr;
1158 else
1159 wdev = NULL;
1160
1161 /*
1162 * end workaround code, by now the rdev is available
1163 * and locked, and wdev may or may not be NULL.
1164 */
1165
1166 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1167 result = cfg80211_dev_rename(
1168 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1169
1170 mutex_unlock(&cfg80211_mutex);
1171
1172 if (result)
1173 goto bad_res;
1174
1175 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1176 struct ieee80211_txq_params txq_params;
1177 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1178
1179 if (!rdev->ops->set_txq_params) {
1180 result = -EOPNOTSUPP;
1181 goto bad_res;
1182 }
1183
1184 nla_for_each_nested(nl_txq_params,
1185 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1186 rem_txq_params) {
1187 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1188 nla_data(nl_txq_params),
1189 nla_len(nl_txq_params),
1190 txq_params_policy);
1191 result = parse_txq_params(tb, &txq_params);
1192 if (result)
1193 goto bad_res;
1194
1195 result = rdev->ops->set_txq_params(&rdev->wiphy,
1196 &txq_params);
1197 if (result)
1198 goto bad_res;
1199 }
1200 }
1201
1202 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1203 result = __nl80211_set_channel(rdev, wdev, info);
1204 if (result)
1205 goto bad_res;
1206 }
1207
1208 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1209 enum nl80211_tx_power_setting type;
1210 int idx, mbm = 0;
1211
1212 if (!rdev->ops->set_tx_power) {
1213 result = -EOPNOTSUPP;
1214 goto bad_res;
1215 }
1216
1217 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1218 type = nla_get_u32(info->attrs[idx]);
1219
1220 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1221 (type != NL80211_TX_POWER_AUTOMATIC)) {
1222 result = -EINVAL;
1223 goto bad_res;
1224 }
1225
1226 if (type != NL80211_TX_POWER_AUTOMATIC) {
1227 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1228 mbm = nla_get_u32(info->attrs[idx]);
1229 }
1230
1231 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1232 if (result)
1233 goto bad_res;
1234 }
1235
1236 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1237 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1238 u32 tx_ant, rx_ant;
1239 if ((!rdev->wiphy.available_antennas_tx &&
1240 !rdev->wiphy.available_antennas_rx) ||
1241 !rdev->ops->set_antenna) {
1242 result = -EOPNOTSUPP;
1243 goto bad_res;
1244 }
1245
1246 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1247 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1248
1249 /* reject antenna configurations which don't match the
1250 * available antenna masks, except for the "all" mask */
1251 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1252 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1253 result = -EINVAL;
1254 goto bad_res;
1255 }
1256
1257 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1258 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1259
1260 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1261 if (result)
1262 goto bad_res;
1263 }
1264
1265 changed = 0;
1266
1267 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1268 retry_short = nla_get_u8(
1269 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1270 if (retry_short == 0) {
1271 result = -EINVAL;
1272 goto bad_res;
1273 }
1274 changed |= WIPHY_PARAM_RETRY_SHORT;
1275 }
1276
1277 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1278 retry_long = nla_get_u8(
1279 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1280 if (retry_long == 0) {
1281 result = -EINVAL;
1282 goto bad_res;
1283 }
1284 changed |= WIPHY_PARAM_RETRY_LONG;
1285 }
1286
1287 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1288 frag_threshold = nla_get_u32(
1289 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1290 if (frag_threshold < 256) {
1291 result = -EINVAL;
1292 goto bad_res;
1293 }
1294 if (frag_threshold != (u32) -1) {
1295 /*
1296 * Fragments (apart from the last one) are required to
1297 * have even length. Make the fragmentation code
1298 * simpler by stripping LSB should someone try to use
1299 * odd threshold value.
1300 */
1301 frag_threshold &= ~0x1;
1302 }
1303 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1304 }
1305
1306 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1307 rts_threshold = nla_get_u32(
1308 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1309 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1310 }
1311
1312 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1313 coverage_class = nla_get_u8(
1314 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1315 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1316 }
1317
1318 if (changed) {
1319 u8 old_retry_short, old_retry_long;
1320 u32 old_frag_threshold, old_rts_threshold;
1321 u8 old_coverage_class;
1322
1323 if (!rdev->ops->set_wiphy_params) {
1324 result = -EOPNOTSUPP;
1325 goto bad_res;
1326 }
1327
1328 old_retry_short = rdev->wiphy.retry_short;
1329 old_retry_long = rdev->wiphy.retry_long;
1330 old_frag_threshold = rdev->wiphy.frag_threshold;
1331 old_rts_threshold = rdev->wiphy.rts_threshold;
1332 old_coverage_class = rdev->wiphy.coverage_class;
1333
1334 if (changed & WIPHY_PARAM_RETRY_SHORT)
1335 rdev->wiphy.retry_short = retry_short;
1336 if (changed & WIPHY_PARAM_RETRY_LONG)
1337 rdev->wiphy.retry_long = retry_long;
1338 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1339 rdev->wiphy.frag_threshold = frag_threshold;
1340 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1341 rdev->wiphy.rts_threshold = rts_threshold;
1342 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1343 rdev->wiphy.coverage_class = coverage_class;
1344
1345 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1346 if (result) {
1347 rdev->wiphy.retry_short = old_retry_short;
1348 rdev->wiphy.retry_long = old_retry_long;
1349 rdev->wiphy.frag_threshold = old_frag_threshold;
1350 rdev->wiphy.rts_threshold = old_rts_threshold;
1351 rdev->wiphy.coverage_class = old_coverage_class;
1352 }
1353 }
1354
1355 bad_res:
1356 mutex_unlock(&rdev->mtx);
1357 if (netdev)
1358 dev_put(netdev);
1359 return result;
1360 }
1361
1362
1363 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1364 struct cfg80211_registered_device *rdev,
1365 struct net_device *dev)
1366 {
1367 void *hdr;
1368
1369 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1370 if (!hdr)
1371 return -1;
1372
1373 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1374 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1375 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1376 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1377
1378 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1379 rdev->devlist_generation ^
1380 (cfg80211_rdev_list_generation << 2));
1381
1382 return genlmsg_end(msg, hdr);
1383
1384 nla_put_failure:
1385 genlmsg_cancel(msg, hdr);
1386 return -EMSGSIZE;
1387 }
1388
1389 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1390 {
1391 int wp_idx = 0;
1392 int if_idx = 0;
1393 int wp_start = cb->args[0];
1394 int if_start = cb->args[1];
1395 struct cfg80211_registered_device *rdev;
1396 struct wireless_dev *wdev;
1397
1398 mutex_lock(&cfg80211_mutex);
1399 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1400 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1401 continue;
1402 if (wp_idx < wp_start) {
1403 wp_idx++;
1404 continue;
1405 }
1406 if_idx = 0;
1407
1408 mutex_lock(&rdev->devlist_mtx);
1409 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1410 if (if_idx < if_start) {
1411 if_idx++;
1412 continue;
1413 }
1414 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1415 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1416 rdev, wdev->netdev) < 0) {
1417 mutex_unlock(&rdev->devlist_mtx);
1418 goto out;
1419 }
1420 if_idx++;
1421 }
1422 mutex_unlock(&rdev->devlist_mtx);
1423
1424 wp_idx++;
1425 }
1426 out:
1427 mutex_unlock(&cfg80211_mutex);
1428
1429 cb->args[0] = wp_idx;
1430 cb->args[1] = if_idx;
1431
1432 return skb->len;
1433 }
1434
1435 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1436 {
1437 struct sk_buff *msg;
1438 struct cfg80211_registered_device *dev = info->user_ptr[0];
1439 struct net_device *netdev = info->user_ptr[1];
1440
1441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1442 if (!msg)
1443 return -ENOMEM;
1444
1445 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1446 dev, netdev) < 0) {
1447 nlmsg_free(msg);
1448 return -ENOBUFS;
1449 }
1450
1451 return genlmsg_reply(msg, info);
1452 }
1453
1454 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1455 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1456 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1457 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1458 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1459 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1460 };
1461
1462 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1463 {
1464 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1465 int flag;
1466
1467 *mntrflags = 0;
1468
1469 if (!nla)
1470 return -EINVAL;
1471
1472 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1473 nla, mntr_flags_policy))
1474 return -EINVAL;
1475
1476 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1477 if (flags[flag])
1478 *mntrflags |= (1<<flag);
1479
1480 return 0;
1481 }
1482
1483 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1484 struct net_device *netdev, u8 use_4addr,
1485 enum nl80211_iftype iftype)
1486 {
1487 if (!use_4addr) {
1488 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1489 return -EBUSY;
1490 return 0;
1491 }
1492
1493 switch (iftype) {
1494 case NL80211_IFTYPE_AP_VLAN:
1495 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1496 return 0;
1497 break;
1498 case NL80211_IFTYPE_STATION:
1499 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1500 return 0;
1501 break;
1502 default:
1503 break;
1504 }
1505
1506 return -EOPNOTSUPP;
1507 }
1508
1509 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1510 {
1511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1512 struct vif_params params;
1513 int err;
1514 enum nl80211_iftype otype, ntype;
1515 struct net_device *dev = info->user_ptr[1];
1516 u32 _flags, *flags = NULL;
1517 bool change = false;
1518
1519 memset(&params, 0, sizeof(params));
1520
1521 otype = ntype = dev->ieee80211_ptr->iftype;
1522
1523 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1524 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1525 if (otype != ntype)
1526 change = true;
1527 if (ntype > NL80211_IFTYPE_MAX)
1528 return -EINVAL;
1529 }
1530
1531 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1532 struct wireless_dev *wdev = dev->ieee80211_ptr;
1533
1534 if (ntype != NL80211_IFTYPE_MESH_POINT)
1535 return -EINVAL;
1536 if (netif_running(dev))
1537 return -EBUSY;
1538
1539 wdev_lock(wdev);
1540 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1541 IEEE80211_MAX_MESH_ID_LEN);
1542 wdev->mesh_id_up_len =
1543 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1544 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1545 wdev->mesh_id_up_len);
1546 wdev_unlock(wdev);
1547 }
1548
1549 if (info->attrs[NL80211_ATTR_4ADDR]) {
1550 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1551 change = true;
1552 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1553 if (err)
1554 return err;
1555 } else {
1556 params.use_4addr = -1;
1557 }
1558
1559 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1560 if (ntype != NL80211_IFTYPE_MONITOR)
1561 return -EINVAL;
1562 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1563 &_flags);
1564 if (err)
1565 return err;
1566
1567 flags = &_flags;
1568 change = true;
1569 }
1570
1571 if (change)
1572 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1573 else
1574 err = 0;
1575
1576 if (!err && params.use_4addr != -1)
1577 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1578
1579 return err;
1580 }
1581
1582 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1583 {
1584 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1585 struct vif_params params;
1586 struct net_device *dev;
1587 int err;
1588 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1589 u32 flags;
1590
1591 memset(&params, 0, sizeof(params));
1592
1593 if (!info->attrs[NL80211_ATTR_IFNAME])
1594 return -EINVAL;
1595
1596 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1597 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1598 if (type > NL80211_IFTYPE_MAX)
1599 return -EINVAL;
1600 }
1601
1602 if (!rdev->ops->add_virtual_intf ||
1603 !(rdev->wiphy.interface_modes & (1 << type)))
1604 return -EOPNOTSUPP;
1605
1606 if (info->attrs[NL80211_ATTR_4ADDR]) {
1607 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1608 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1609 if (err)
1610 return err;
1611 }
1612
1613 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1614 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1615 &flags);
1616 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1617 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1618 type, err ? NULL : &flags, &params);
1619 if (IS_ERR(dev))
1620 return PTR_ERR(dev);
1621
1622 if (type == NL80211_IFTYPE_MESH_POINT &&
1623 info->attrs[NL80211_ATTR_MESH_ID]) {
1624 struct wireless_dev *wdev = dev->ieee80211_ptr;
1625
1626 wdev_lock(wdev);
1627 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1628 IEEE80211_MAX_MESH_ID_LEN);
1629 wdev->mesh_id_up_len =
1630 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1631 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1632 wdev->mesh_id_up_len);
1633 wdev_unlock(wdev);
1634 }
1635
1636 return 0;
1637 }
1638
1639 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1640 {
1641 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1642 struct net_device *dev = info->user_ptr[1];
1643
1644 if (!rdev->ops->del_virtual_intf)
1645 return -EOPNOTSUPP;
1646
1647 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1648 }
1649
1650 struct get_key_cookie {
1651 struct sk_buff *msg;
1652 int error;
1653 int idx;
1654 };
1655
1656 static void get_key_callback(void *c, struct key_params *params)
1657 {
1658 struct nlattr *key;
1659 struct get_key_cookie *cookie = c;
1660
1661 if (params->key)
1662 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1663 params->key_len, params->key);
1664
1665 if (params->seq)
1666 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1667 params->seq_len, params->seq);
1668
1669 if (params->cipher)
1670 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1671 params->cipher);
1672
1673 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1674 if (!key)
1675 goto nla_put_failure;
1676
1677 if (params->key)
1678 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1679 params->key_len, params->key);
1680
1681 if (params->seq)
1682 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1683 params->seq_len, params->seq);
1684
1685 if (params->cipher)
1686 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1687 params->cipher);
1688
1689 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1690
1691 nla_nest_end(cookie->msg, key);
1692
1693 return;
1694 nla_put_failure:
1695 cookie->error = 1;
1696 }
1697
1698 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1699 {
1700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1701 int err;
1702 struct net_device *dev = info->user_ptr[1];
1703 u8 key_idx = 0;
1704 const u8 *mac_addr = NULL;
1705 bool pairwise;
1706 struct get_key_cookie cookie = {
1707 .error = 0,
1708 };
1709 void *hdr;
1710 struct sk_buff *msg;
1711
1712 if (info->attrs[NL80211_ATTR_KEY_IDX])
1713 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1714
1715 if (key_idx > 5)
1716 return -EINVAL;
1717
1718 if (info->attrs[NL80211_ATTR_MAC])
1719 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1720
1721 pairwise = !!mac_addr;
1722 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1723 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1724 if (kt >= NUM_NL80211_KEYTYPES)
1725 return -EINVAL;
1726 if (kt != NL80211_KEYTYPE_GROUP &&
1727 kt != NL80211_KEYTYPE_PAIRWISE)
1728 return -EINVAL;
1729 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1730 }
1731
1732 if (!rdev->ops->get_key)
1733 return -EOPNOTSUPP;
1734
1735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1736 if (!msg)
1737 return -ENOMEM;
1738
1739 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1740 NL80211_CMD_NEW_KEY);
1741 if (IS_ERR(hdr))
1742 return PTR_ERR(hdr);
1743
1744 cookie.msg = msg;
1745 cookie.idx = key_idx;
1746
1747 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1748 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1749 if (mac_addr)
1750 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1751
1752 if (pairwise && mac_addr &&
1753 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1754 return -ENOENT;
1755
1756 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1757 mac_addr, &cookie, get_key_callback);
1758
1759 if (err)
1760 goto free_msg;
1761
1762 if (cookie.error)
1763 goto nla_put_failure;
1764
1765 genlmsg_end(msg, hdr);
1766 return genlmsg_reply(msg, info);
1767
1768 nla_put_failure:
1769 err = -ENOBUFS;
1770 free_msg:
1771 nlmsg_free(msg);
1772 return err;
1773 }
1774
1775 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1776 {
1777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1778 struct key_parse key;
1779 int err;
1780 struct net_device *dev = info->user_ptr[1];
1781
1782 err = nl80211_parse_key(info, &key);
1783 if (err)
1784 return err;
1785
1786 if (key.idx < 0)
1787 return -EINVAL;
1788
1789 /* only support setting default key */
1790 if (!key.def && !key.defmgmt)
1791 return -EINVAL;
1792
1793 wdev_lock(dev->ieee80211_ptr);
1794
1795 if (key.def) {
1796 if (!rdev->ops->set_default_key) {
1797 err = -EOPNOTSUPP;
1798 goto out;
1799 }
1800
1801 err = nl80211_key_allowed(dev->ieee80211_ptr);
1802 if (err)
1803 goto out;
1804
1805 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1806 key.def_uni, key.def_multi);
1807
1808 if (err)
1809 goto out;
1810
1811 #ifdef CONFIG_CFG80211_WEXT
1812 dev->ieee80211_ptr->wext.default_key = key.idx;
1813 #endif
1814 } else {
1815 if (key.def_uni || !key.def_multi) {
1816 err = -EINVAL;
1817 goto out;
1818 }
1819
1820 if (!rdev->ops->set_default_mgmt_key) {
1821 err = -EOPNOTSUPP;
1822 goto out;
1823 }
1824
1825 err = nl80211_key_allowed(dev->ieee80211_ptr);
1826 if (err)
1827 goto out;
1828
1829 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1830 dev, key.idx);
1831 if (err)
1832 goto out;
1833
1834 #ifdef CONFIG_CFG80211_WEXT
1835 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1836 #endif
1837 }
1838
1839 out:
1840 wdev_unlock(dev->ieee80211_ptr);
1841
1842 return err;
1843 }
1844
1845 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1846 {
1847 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1848 int err;
1849 struct net_device *dev = info->user_ptr[1];
1850 struct key_parse key;
1851 const u8 *mac_addr = NULL;
1852
1853 err = nl80211_parse_key(info, &key);
1854 if (err)
1855 return err;
1856
1857 if (!key.p.key)
1858 return -EINVAL;
1859
1860 if (info->attrs[NL80211_ATTR_MAC])
1861 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1862
1863 if (key.type == -1) {
1864 if (mac_addr)
1865 key.type = NL80211_KEYTYPE_PAIRWISE;
1866 else
1867 key.type = NL80211_KEYTYPE_GROUP;
1868 }
1869
1870 /* for now */
1871 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1872 key.type != NL80211_KEYTYPE_GROUP)
1873 return -EINVAL;
1874
1875 if (!rdev->ops->add_key)
1876 return -EOPNOTSUPP;
1877
1878 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1879 key.type == NL80211_KEYTYPE_PAIRWISE,
1880 mac_addr))
1881 return -EINVAL;
1882
1883 wdev_lock(dev->ieee80211_ptr);
1884 err = nl80211_key_allowed(dev->ieee80211_ptr);
1885 if (!err)
1886 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1887 key.type == NL80211_KEYTYPE_PAIRWISE,
1888 mac_addr, &key.p);
1889 wdev_unlock(dev->ieee80211_ptr);
1890
1891 return err;
1892 }
1893
1894 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1895 {
1896 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1897 int err;
1898 struct net_device *dev = info->user_ptr[1];
1899 u8 *mac_addr = NULL;
1900 struct key_parse key;
1901
1902 err = nl80211_parse_key(info, &key);
1903 if (err)
1904 return err;
1905
1906 if (info->attrs[NL80211_ATTR_MAC])
1907 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1908
1909 if (key.type == -1) {
1910 if (mac_addr)
1911 key.type = NL80211_KEYTYPE_PAIRWISE;
1912 else
1913 key.type = NL80211_KEYTYPE_GROUP;
1914 }
1915
1916 /* for now */
1917 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1918 key.type != NL80211_KEYTYPE_GROUP)
1919 return -EINVAL;
1920
1921 if (!rdev->ops->del_key)
1922 return -EOPNOTSUPP;
1923
1924 wdev_lock(dev->ieee80211_ptr);
1925 err = nl80211_key_allowed(dev->ieee80211_ptr);
1926
1927 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1928 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1929 err = -ENOENT;
1930
1931 if (!err)
1932 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1933 key.type == NL80211_KEYTYPE_PAIRWISE,
1934 mac_addr);
1935
1936 #ifdef CONFIG_CFG80211_WEXT
1937 if (!err) {
1938 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1939 dev->ieee80211_ptr->wext.default_key = -1;
1940 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1941 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1942 }
1943 #endif
1944 wdev_unlock(dev->ieee80211_ptr);
1945
1946 return err;
1947 }
1948
1949 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1950 {
1951 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1952 struct beacon_parameters *info);
1953 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1954 struct net_device *dev = info->user_ptr[1];
1955 struct wireless_dev *wdev = dev->ieee80211_ptr;
1956 struct beacon_parameters params;
1957 int haveinfo = 0, err;
1958
1959 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1960 return -EINVAL;
1961
1962 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1963 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1964 return -EOPNOTSUPP;
1965
1966 memset(&params, 0, sizeof(params));
1967
1968 switch (info->genlhdr->cmd) {
1969 case NL80211_CMD_NEW_BEACON:
1970 /* these are required for NEW_BEACON */
1971 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1972 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1973 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1974 return -EINVAL;
1975
1976 params.interval =
1977 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1978 params.dtim_period =
1979 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1980
1981 err = cfg80211_validate_beacon_int(rdev, params.interval);
1982 if (err)
1983 return err;
1984
1985 call = rdev->ops->add_beacon;
1986 break;
1987 case NL80211_CMD_SET_BEACON:
1988 call = rdev->ops->set_beacon;
1989 break;
1990 default:
1991 WARN_ON(1);
1992 return -EOPNOTSUPP;
1993 }
1994
1995 if (!call)
1996 return -EOPNOTSUPP;
1997
1998 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1999 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2000 params.head_len =
2001 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2002 haveinfo = 1;
2003 }
2004
2005 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2006 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2007 params.tail_len =
2008 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2009 haveinfo = 1;
2010 }
2011
2012 if (!haveinfo)
2013 return -EINVAL;
2014
2015 err = call(&rdev->wiphy, dev, &params);
2016 if (!err && params.interval)
2017 wdev->beacon_interval = params.interval;
2018 return err;
2019 }
2020
2021 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2022 {
2023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2024 struct net_device *dev = info->user_ptr[1];
2025 struct wireless_dev *wdev = dev->ieee80211_ptr;
2026 int err;
2027
2028 if (!rdev->ops->del_beacon)
2029 return -EOPNOTSUPP;
2030
2031 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2032 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2033 return -EOPNOTSUPP;
2034
2035 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2036 if (!err)
2037 wdev->beacon_interval = 0;
2038 return err;
2039 }
2040
2041 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2042 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2043 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2044 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2045 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2046 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2047 };
2048
2049 static int parse_station_flags(struct genl_info *info,
2050 struct station_parameters *params)
2051 {
2052 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2053 struct nlattr *nla;
2054 int flag;
2055
2056 /*
2057 * Try parsing the new attribute first so userspace
2058 * can specify both for older kernels.
2059 */
2060 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2061 if (nla) {
2062 struct nl80211_sta_flag_update *sta_flags;
2063
2064 sta_flags = nla_data(nla);
2065 params->sta_flags_mask = sta_flags->mask;
2066 params->sta_flags_set = sta_flags->set;
2067 if ((params->sta_flags_mask |
2068 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2069 return -EINVAL;
2070 return 0;
2071 }
2072
2073 /* if present, parse the old attribute */
2074
2075 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2076 if (!nla)
2077 return 0;
2078
2079 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2080 nla, sta_flags_policy))
2081 return -EINVAL;
2082
2083 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2084 params->sta_flags_mask &= ~1;
2085
2086 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2087 if (flags[flag])
2088 params->sta_flags_set |= (1<<flag);
2089
2090 return 0;
2091 }
2092
2093 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2094 int attr)
2095 {
2096 struct nlattr *rate;
2097 u16 bitrate;
2098
2099 rate = nla_nest_start(msg, attr);
2100 if (!rate)
2101 goto nla_put_failure;
2102
2103 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2104 bitrate = cfg80211_calculate_bitrate(info);
2105 if (bitrate > 0)
2106 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2107
2108 if (info->flags & RATE_INFO_FLAGS_MCS)
2109 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2110 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2111 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2112 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2113 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2114
2115 nla_nest_end(msg, rate);
2116 return true;
2117
2118 nla_put_failure:
2119 return false;
2120 }
2121
2122 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2123 int flags, struct net_device *dev,
2124 const u8 *mac_addr, struct station_info *sinfo)
2125 {
2126 void *hdr;
2127 struct nlattr *sinfoattr, *bss_param;
2128
2129 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2130 if (!hdr)
2131 return -1;
2132
2133 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2134 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2135
2136 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2137
2138 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2139 if (!sinfoattr)
2140 goto nla_put_failure;
2141 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2142 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2143 sinfo->connected_time);
2144 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2145 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2146 sinfo->inactive_time);
2147 if (sinfo->filled & STATION_INFO_RX_BYTES)
2148 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2149 sinfo->rx_bytes);
2150 if (sinfo->filled & STATION_INFO_TX_BYTES)
2151 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2152 sinfo->tx_bytes);
2153 if (sinfo->filled & STATION_INFO_LLID)
2154 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2155 sinfo->llid);
2156 if (sinfo->filled & STATION_INFO_PLID)
2157 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2158 sinfo->plid);
2159 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2160 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2161 sinfo->plink_state);
2162 if (sinfo->filled & STATION_INFO_SIGNAL)
2163 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2164 sinfo->signal);
2165 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2166 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2167 sinfo->signal_avg);
2168 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2169 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2170 NL80211_STA_INFO_TX_BITRATE))
2171 goto nla_put_failure;
2172 }
2173 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2174 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2175 NL80211_STA_INFO_RX_BITRATE))
2176 goto nla_put_failure;
2177 }
2178 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2179 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2180 sinfo->rx_packets);
2181 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2182 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2183 sinfo->tx_packets);
2184 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2185 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2186 sinfo->tx_retries);
2187 if (sinfo->filled & STATION_INFO_TX_FAILED)
2188 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2189 sinfo->tx_failed);
2190 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2191 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2192 if (!bss_param)
2193 goto nla_put_failure;
2194
2195 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2196 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2197 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2198 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2199 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2200 NLA_PUT_FLAG(msg,
2201 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2202 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2203 sinfo->bss_param.dtim_period);
2204 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2205 sinfo->bss_param.beacon_interval);
2206
2207 nla_nest_end(msg, bss_param);
2208 }
2209 nla_nest_end(msg, sinfoattr);
2210
2211 return genlmsg_end(msg, hdr);
2212
2213 nla_put_failure:
2214 genlmsg_cancel(msg, hdr);
2215 return -EMSGSIZE;
2216 }
2217
2218 static int nl80211_dump_station(struct sk_buff *skb,
2219 struct netlink_callback *cb)
2220 {
2221 struct station_info sinfo;
2222 struct cfg80211_registered_device *dev;
2223 struct net_device *netdev;
2224 u8 mac_addr[ETH_ALEN];
2225 int sta_idx = cb->args[1];
2226 int err;
2227
2228 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2229 if (err)
2230 return err;
2231
2232 if (!dev->ops->dump_station) {
2233 err = -EOPNOTSUPP;
2234 goto out_err;
2235 }
2236
2237 while (1) {
2238 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2239 mac_addr, &sinfo);
2240 if (err == -ENOENT)
2241 break;
2242 if (err)
2243 goto out_err;
2244
2245 if (nl80211_send_station(skb,
2246 NETLINK_CB(cb->skb).pid,
2247 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2248 netdev, mac_addr,
2249 &sinfo) < 0)
2250 goto out;
2251
2252 sta_idx++;
2253 }
2254
2255
2256 out:
2257 cb->args[1] = sta_idx;
2258 err = skb->len;
2259 out_err:
2260 nl80211_finish_netdev_dump(dev);
2261
2262 return err;
2263 }
2264
2265 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2266 {
2267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2268 struct net_device *dev = info->user_ptr[1];
2269 struct station_info sinfo;
2270 struct sk_buff *msg;
2271 u8 *mac_addr = NULL;
2272 int err;
2273
2274 memset(&sinfo, 0, sizeof(sinfo));
2275
2276 if (!info->attrs[NL80211_ATTR_MAC])
2277 return -EINVAL;
2278
2279 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2280
2281 if (!rdev->ops->get_station)
2282 return -EOPNOTSUPP;
2283
2284 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2285 if (err)
2286 return err;
2287
2288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2289 if (!msg)
2290 return -ENOMEM;
2291
2292 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2293 dev, mac_addr, &sinfo) < 0) {
2294 nlmsg_free(msg);
2295 return -ENOBUFS;
2296 }
2297
2298 return genlmsg_reply(msg, info);
2299 }
2300
2301 /*
2302 * Get vlan interface making sure it is running and on the right wiphy.
2303 */
2304 static int get_vlan(struct genl_info *info,
2305 struct cfg80211_registered_device *rdev,
2306 struct net_device **vlan)
2307 {
2308 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2309 *vlan = NULL;
2310
2311 if (vlanattr) {
2312 *vlan = dev_get_by_index(genl_info_net(info),
2313 nla_get_u32(vlanattr));
2314 if (!*vlan)
2315 return -ENODEV;
2316 if (!(*vlan)->ieee80211_ptr)
2317 return -EINVAL;
2318 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2319 return -EINVAL;
2320 if (!netif_running(*vlan))
2321 return -ENETDOWN;
2322 }
2323 return 0;
2324 }
2325
2326 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2327 {
2328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2329 int err;
2330 struct net_device *dev = info->user_ptr[1];
2331 struct station_parameters params;
2332 u8 *mac_addr = NULL;
2333
2334 memset(&params, 0, sizeof(params));
2335
2336 params.listen_interval = -1;
2337 params.plink_state = -1;
2338
2339 if (info->attrs[NL80211_ATTR_STA_AID])
2340 return -EINVAL;
2341
2342 if (!info->attrs[NL80211_ATTR_MAC])
2343 return -EINVAL;
2344
2345 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2346
2347 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2348 params.supported_rates =
2349 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2350 params.supported_rates_len =
2351 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2352 }
2353
2354 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2355 params.listen_interval =
2356 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2357
2358 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2359 params.ht_capa =
2360 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2361
2362 if (parse_station_flags(info, &params))
2363 return -EINVAL;
2364
2365 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2366 params.plink_action =
2367 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2368
2369 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2370 params.plink_state =
2371 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2372
2373 err = get_vlan(info, rdev, &params.vlan);
2374 if (err)
2375 goto out;
2376
2377 /* validate settings */
2378 err = 0;
2379
2380 switch (dev->ieee80211_ptr->iftype) {
2381 case NL80211_IFTYPE_AP:
2382 case NL80211_IFTYPE_AP_VLAN:
2383 case NL80211_IFTYPE_P2P_GO:
2384 /* disallow mesh-specific things */
2385 if (params.plink_action)
2386 err = -EINVAL;
2387 break;
2388 case NL80211_IFTYPE_P2P_CLIENT:
2389 case NL80211_IFTYPE_STATION:
2390 /* disallow everything but AUTHORIZED flag */
2391 if (params.plink_action)
2392 err = -EINVAL;
2393 if (params.vlan)
2394 err = -EINVAL;
2395 if (params.supported_rates)
2396 err = -EINVAL;
2397 if (params.ht_capa)
2398 err = -EINVAL;
2399 if (params.listen_interval >= 0)
2400 err = -EINVAL;
2401 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2402 err = -EINVAL;
2403 break;
2404 case NL80211_IFTYPE_MESH_POINT:
2405 /* disallow things mesh doesn't support */
2406 if (params.vlan)
2407 err = -EINVAL;
2408 if (params.ht_capa)
2409 err = -EINVAL;
2410 if (params.listen_interval >= 0)
2411 err = -EINVAL;
2412 if (params.sta_flags_mask &
2413 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2414 BIT(NL80211_STA_FLAG_MFP) |
2415 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2416 err = -EINVAL;
2417 break;
2418 default:
2419 err = -EINVAL;
2420 }
2421
2422 if (err)
2423 goto out;
2424
2425 if (!rdev->ops->change_station) {
2426 err = -EOPNOTSUPP;
2427 goto out;
2428 }
2429
2430 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2431
2432 out:
2433 if (params.vlan)
2434 dev_put(params.vlan);
2435
2436 return err;
2437 }
2438
2439 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2440 {
2441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2442 int err;
2443 struct net_device *dev = info->user_ptr[1];
2444 struct station_parameters params;
2445 u8 *mac_addr = NULL;
2446
2447 memset(&params, 0, sizeof(params));
2448
2449 if (!info->attrs[NL80211_ATTR_MAC])
2450 return -EINVAL;
2451
2452 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2453 return -EINVAL;
2454
2455 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2456 return -EINVAL;
2457
2458 if (!info->attrs[NL80211_ATTR_STA_AID])
2459 return -EINVAL;
2460
2461 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2462 params.supported_rates =
2463 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2464 params.supported_rates_len =
2465 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2466 params.listen_interval =
2467 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2468
2469 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2470 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2471 return -EINVAL;
2472
2473 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2474 params.ht_capa =
2475 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2476
2477 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2478 params.plink_action =
2479 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2480
2481 if (parse_station_flags(info, &params))
2482 return -EINVAL;
2483
2484 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2485 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2486 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2487 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2488 return -EINVAL;
2489
2490 err = get_vlan(info, rdev, &params.vlan);
2491 if (err)
2492 goto out;
2493
2494 /* validate settings */
2495 err = 0;
2496
2497 if (!rdev->ops->add_station) {
2498 err = -EOPNOTSUPP;
2499 goto out;
2500 }
2501
2502 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2503
2504 out:
2505 if (params.vlan)
2506 dev_put(params.vlan);
2507 return err;
2508 }
2509
2510 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2511 {
2512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2513 struct net_device *dev = info->user_ptr[1];
2514 u8 *mac_addr = NULL;
2515
2516 if (info->attrs[NL80211_ATTR_MAC])
2517 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2518
2519 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2520 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2521 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2522 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2523 return -EINVAL;
2524
2525 if (!rdev->ops->del_station)
2526 return -EOPNOTSUPP;
2527
2528 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2529 }
2530
2531 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2532 int flags, struct net_device *dev,
2533 u8 *dst, u8 *next_hop,
2534 struct mpath_info *pinfo)
2535 {
2536 void *hdr;
2537 struct nlattr *pinfoattr;
2538
2539 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2540 if (!hdr)
2541 return -1;
2542
2543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2544 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2545 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2546
2547 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2548
2549 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2550 if (!pinfoattr)
2551 goto nla_put_failure;
2552 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2553 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2554 pinfo->frame_qlen);
2555 if (pinfo->filled & MPATH_INFO_SN)
2556 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2557 pinfo->sn);
2558 if (pinfo->filled & MPATH_INFO_METRIC)
2559 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2560 pinfo->metric);
2561 if (pinfo->filled & MPATH_INFO_EXPTIME)
2562 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2563 pinfo->exptime);
2564 if (pinfo->filled & MPATH_INFO_FLAGS)
2565 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2566 pinfo->flags);
2567 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2568 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2569 pinfo->discovery_timeout);
2570 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2571 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2572 pinfo->discovery_retries);
2573
2574 nla_nest_end(msg, pinfoattr);
2575
2576 return genlmsg_end(msg, hdr);
2577
2578 nla_put_failure:
2579 genlmsg_cancel(msg, hdr);
2580 return -EMSGSIZE;
2581 }
2582
2583 static int nl80211_dump_mpath(struct sk_buff *skb,
2584 struct netlink_callback *cb)
2585 {
2586 struct mpath_info pinfo;
2587 struct cfg80211_registered_device *dev;
2588 struct net_device *netdev;
2589 u8 dst[ETH_ALEN];
2590 u8 next_hop[ETH_ALEN];
2591 int path_idx = cb->args[1];
2592 int err;
2593
2594 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2595 if (err)
2596 return err;
2597
2598 if (!dev->ops->dump_mpath) {
2599 err = -EOPNOTSUPP;
2600 goto out_err;
2601 }
2602
2603 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2604 err = -EOPNOTSUPP;
2605 goto out_err;
2606 }
2607
2608 while (1) {
2609 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2610 dst, next_hop, &pinfo);
2611 if (err == -ENOENT)
2612 break;
2613 if (err)
2614 goto out_err;
2615
2616 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2617 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2618 netdev, dst, next_hop,
2619 &pinfo) < 0)
2620 goto out;
2621
2622 path_idx++;
2623 }
2624
2625
2626 out:
2627 cb->args[1] = path_idx;
2628 err = skb->len;
2629 out_err:
2630 nl80211_finish_netdev_dump(dev);
2631 return err;
2632 }
2633
2634 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2635 {
2636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2637 int err;
2638 struct net_device *dev = info->user_ptr[1];
2639 struct mpath_info pinfo;
2640 struct sk_buff *msg;
2641 u8 *dst = NULL;
2642 u8 next_hop[ETH_ALEN];
2643
2644 memset(&pinfo, 0, sizeof(pinfo));
2645
2646 if (!info->attrs[NL80211_ATTR_MAC])
2647 return -EINVAL;
2648
2649 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2650
2651 if (!rdev->ops->get_mpath)
2652 return -EOPNOTSUPP;
2653
2654 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2655 return -EOPNOTSUPP;
2656
2657 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2658 if (err)
2659 return err;
2660
2661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2662 if (!msg)
2663 return -ENOMEM;
2664
2665 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2666 dev, dst, next_hop, &pinfo) < 0) {
2667 nlmsg_free(msg);
2668 return -ENOBUFS;
2669 }
2670
2671 return genlmsg_reply(msg, info);
2672 }
2673
2674 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2675 {
2676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2677 struct net_device *dev = info->user_ptr[1];
2678 u8 *dst = NULL;
2679 u8 *next_hop = NULL;
2680
2681 if (!info->attrs[NL80211_ATTR_MAC])
2682 return -EINVAL;
2683
2684 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2685 return -EINVAL;
2686
2687 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2688 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2689
2690 if (!rdev->ops->change_mpath)
2691 return -EOPNOTSUPP;
2692
2693 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2694 return -EOPNOTSUPP;
2695
2696 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2697 }
2698
2699 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2700 {
2701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2702 struct net_device *dev = info->user_ptr[1];
2703 u8 *dst = NULL;
2704 u8 *next_hop = NULL;
2705
2706 if (!info->attrs[NL80211_ATTR_MAC])
2707 return -EINVAL;
2708
2709 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2710 return -EINVAL;
2711
2712 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2713 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2714
2715 if (!rdev->ops->add_mpath)
2716 return -EOPNOTSUPP;
2717
2718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2719 return -EOPNOTSUPP;
2720
2721 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2722 }
2723
2724 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2725 {
2726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727 struct net_device *dev = info->user_ptr[1];
2728 u8 *dst = NULL;
2729
2730 if (info->attrs[NL80211_ATTR_MAC])
2731 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2732
2733 if (!rdev->ops->del_mpath)
2734 return -EOPNOTSUPP;
2735
2736 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2737 }
2738
2739 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2740 {
2741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2742 struct net_device *dev = info->user_ptr[1];
2743 struct bss_parameters params;
2744
2745 memset(&params, 0, sizeof(params));
2746 /* default to not changing parameters */
2747 params.use_cts_prot = -1;
2748 params.use_short_preamble = -1;
2749 params.use_short_slot_time = -1;
2750 params.ap_isolate = -1;
2751 params.ht_opmode = -1;
2752
2753 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2754 params.use_cts_prot =
2755 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2756 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2757 params.use_short_preamble =
2758 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2759 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2760 params.use_short_slot_time =
2761 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2762 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2763 params.basic_rates =
2764 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2765 params.basic_rates_len =
2766 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2767 }
2768 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2769 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2770 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2771 params.ht_opmode =
2772 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2773
2774 if (!rdev->ops->change_bss)
2775 return -EOPNOTSUPP;
2776
2777 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2778 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2779 return -EOPNOTSUPP;
2780
2781 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2782 }
2783
2784 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2785 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2786 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2787 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2788 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2789 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2790 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2791 };
2792
2793 static int parse_reg_rule(struct nlattr *tb[],
2794 struct ieee80211_reg_rule *reg_rule)
2795 {
2796 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2797 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2798
2799 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2800 return -EINVAL;
2801 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2802 return -EINVAL;
2803 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2804 return -EINVAL;
2805 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2806 return -EINVAL;
2807 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2808 return -EINVAL;
2809
2810 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2811
2812 freq_range->start_freq_khz =
2813 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2814 freq_range->end_freq_khz =
2815 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2816 freq_range->max_bandwidth_khz =
2817 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2818
2819 power_rule->max_eirp =
2820 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2821
2822 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2823 power_rule->max_antenna_gain =
2824 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2825
2826 return 0;
2827 }
2828
2829 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2830 {
2831 int r;
2832 char *data = NULL;
2833
2834 /*
2835 * You should only get this when cfg80211 hasn't yet initialized
2836 * completely when built-in to the kernel right between the time
2837 * window between nl80211_init() and regulatory_init(), if that is
2838 * even possible.
2839 */
2840 mutex_lock(&cfg80211_mutex);
2841 if (unlikely(!cfg80211_regdomain)) {
2842 mutex_unlock(&cfg80211_mutex);
2843 return -EINPROGRESS;
2844 }
2845 mutex_unlock(&cfg80211_mutex);
2846
2847 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2848 return -EINVAL;
2849
2850 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2851
2852 r = regulatory_hint_user(data);
2853
2854 return r;
2855 }
2856
2857 static int nl80211_get_mesh_config(struct sk_buff *skb,
2858 struct genl_info *info)
2859 {
2860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2861 struct net_device *dev = info->user_ptr[1];
2862 struct wireless_dev *wdev = dev->ieee80211_ptr;
2863 struct mesh_config cur_params;
2864 int err = 0;
2865 void *hdr;
2866 struct nlattr *pinfoattr;
2867 struct sk_buff *msg;
2868
2869 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2870 return -EOPNOTSUPP;
2871
2872 if (!rdev->ops->get_mesh_config)
2873 return -EOPNOTSUPP;
2874
2875 wdev_lock(wdev);
2876 /* If not connected, get default parameters */
2877 if (!wdev->mesh_id_len)
2878 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2879 else
2880 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2881 &cur_params);
2882 wdev_unlock(wdev);
2883
2884 if (err)
2885 return err;
2886
2887 /* Draw up a netlink message to send back */
2888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2889 if (!msg)
2890 return -ENOMEM;
2891 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2892 NL80211_CMD_GET_MESH_CONFIG);
2893 if (!hdr)
2894 goto out;
2895 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2896 if (!pinfoattr)
2897 goto nla_put_failure;
2898 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2899 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2900 cur_params.dot11MeshRetryTimeout);
2901 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2902 cur_params.dot11MeshConfirmTimeout);
2903 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2904 cur_params.dot11MeshHoldingTimeout);
2905 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2906 cur_params.dot11MeshMaxPeerLinks);
2907 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2908 cur_params.dot11MeshMaxRetries);
2909 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2910 cur_params.dot11MeshTTL);
2911 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2912 cur_params.element_ttl);
2913 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2914 cur_params.auto_open_plinks);
2915 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2916 cur_params.dot11MeshHWMPmaxPREQretries);
2917 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2918 cur_params.path_refresh_time);
2919 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2920 cur_params.min_discovery_timeout);
2921 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2922 cur_params.dot11MeshHWMPactivePathTimeout);
2923 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2924 cur_params.dot11MeshHWMPpreqMinInterval);
2925 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2926 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2927 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2928 cur_params.dot11MeshHWMPRootMode);
2929 nla_nest_end(msg, pinfoattr);
2930 genlmsg_end(msg, hdr);
2931 return genlmsg_reply(msg, info);
2932
2933 nla_put_failure:
2934 genlmsg_cancel(msg, hdr);
2935 out:
2936 nlmsg_free(msg);
2937 return -ENOBUFS;
2938 }
2939
2940 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2941 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2942 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2943 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2944 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2945 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2946 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2947 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2948 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2949
2950 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2951 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2952 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2953 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2954 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2955 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2956 };
2957
2958 static const struct nla_policy
2959 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2960 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2961 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2962 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
2963 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
2964 .len = IEEE80211_MAX_DATA_LEN },
2965 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
2966 };
2967
2968 static int nl80211_parse_mesh_config(struct genl_info *info,
2969 struct mesh_config *cfg,
2970 u32 *mask_out)
2971 {
2972 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2973 u32 mask = 0;
2974
2975 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2976 do {\
2977 if (table[attr_num]) {\
2978 cfg->param = nla_fn(table[attr_num]); \
2979 mask |= (1 << (attr_num - 1)); \
2980 } \
2981 } while (0);\
2982
2983
2984 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2985 return -EINVAL;
2986 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2987 info->attrs[NL80211_ATTR_MESH_CONFIG],
2988 nl80211_meshconf_params_policy))
2989 return -EINVAL;
2990
2991 /* This makes sure that there aren't more than 32 mesh config
2992 * parameters (otherwise our bitfield scheme would not work.) */
2993 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2994
2995 /* Fill in the params struct */
2996 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2997 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2998 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2999 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3001 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3002 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3003 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3005 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3006 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3007 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3008 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3009 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3011 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3012 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3013 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3014 nla_get_u8);
3015 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3016 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3018 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3019 nla_get_u16);
3020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3021 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3022 nla_get_u32);
3023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3024 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3025 nla_get_u16);
3026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3027 dot11MeshHWMPnetDiameterTraversalTime,
3028 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3029 nla_get_u16);
3030 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3031 dot11MeshHWMPRootMode, mask,
3032 NL80211_MESHCONF_HWMP_ROOTMODE,
3033 nla_get_u8);
3034 if (mask_out)
3035 *mask_out = mask;
3036
3037 return 0;
3038
3039 #undef FILL_IN_MESH_PARAM_IF_SET
3040 }
3041
3042 static int nl80211_parse_mesh_setup(struct genl_info *info,
3043 struct mesh_setup *setup)
3044 {
3045 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3046
3047 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3048 return -EINVAL;
3049 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3050 info->attrs[NL80211_ATTR_MESH_SETUP],
3051 nl80211_mesh_setup_params_policy))
3052 return -EINVAL;
3053
3054 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3055 setup->path_sel_proto =
3056 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3057 IEEE80211_PATH_PROTOCOL_VENDOR :
3058 IEEE80211_PATH_PROTOCOL_HWMP;
3059
3060 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3061 setup->path_metric =
3062 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3063 IEEE80211_PATH_METRIC_VENDOR :
3064 IEEE80211_PATH_METRIC_AIRTIME;
3065
3066
3067 if (tb[NL80211_MESH_SETUP_IE]) {
3068 struct nlattr *ieattr =
3069 tb[NL80211_MESH_SETUP_IE];
3070 if (!is_valid_ie_attr(ieattr))
3071 return -EINVAL;
3072 setup->ie = nla_data(ieattr);
3073 setup->ie_len = nla_len(ieattr);
3074 }
3075 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3076 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3077
3078 return 0;
3079 }
3080
3081 static int nl80211_update_mesh_config(struct sk_buff *skb,
3082 struct genl_info *info)
3083 {
3084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3085 struct net_device *dev = info->user_ptr[1];
3086 struct wireless_dev *wdev = dev->ieee80211_ptr;
3087 struct mesh_config cfg;
3088 u32 mask;
3089 int err;
3090
3091 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3092 return -EOPNOTSUPP;
3093
3094 if (!rdev->ops->update_mesh_config)
3095 return -EOPNOTSUPP;
3096
3097 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3098 if (err)
3099 return err;
3100
3101 wdev_lock(wdev);
3102 if (!wdev->mesh_id_len)
3103 err = -ENOLINK;
3104
3105 if (!err)
3106 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3107 mask, &cfg);
3108
3109 wdev_unlock(wdev);
3110
3111 return err;
3112 }
3113
3114 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3115 {
3116 struct sk_buff *msg;
3117 void *hdr = NULL;
3118 struct nlattr *nl_reg_rules;
3119 unsigned int i;
3120 int err = -EINVAL;
3121
3122 mutex_lock(&cfg80211_mutex);
3123
3124 if (!cfg80211_regdomain)
3125 goto out;
3126
3127 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3128 if (!msg) {
3129 err = -ENOBUFS;
3130 goto out;
3131 }
3132
3133 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3134 NL80211_CMD_GET_REG);
3135 if (!hdr)
3136 goto put_failure;
3137
3138 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3139 cfg80211_regdomain->alpha2);
3140
3141 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3142 if (!nl_reg_rules)
3143 goto nla_put_failure;
3144
3145 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3146 struct nlattr *nl_reg_rule;
3147 const struct ieee80211_reg_rule *reg_rule;
3148 const struct ieee80211_freq_range *freq_range;
3149 const struct ieee80211_power_rule *power_rule;
3150
3151 reg_rule = &cfg80211_regdomain->reg_rules[i];
3152 freq_range = &reg_rule->freq_range;
3153 power_rule = &reg_rule->power_rule;
3154
3155 nl_reg_rule = nla_nest_start(msg, i);
3156 if (!nl_reg_rule)
3157 goto nla_put_failure;
3158
3159 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3160 reg_rule->flags);
3161 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3162 freq_range->start_freq_khz);
3163 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3164 freq_range->end_freq_khz);
3165 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3166 freq_range->max_bandwidth_khz);
3167 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3168 power_rule->max_antenna_gain);
3169 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3170 power_rule->max_eirp);
3171
3172 nla_nest_end(msg, nl_reg_rule);
3173 }
3174
3175 nla_nest_end(msg, nl_reg_rules);
3176
3177 genlmsg_end(msg, hdr);
3178 err = genlmsg_reply(msg, info);
3179 goto out;
3180
3181 nla_put_failure:
3182 genlmsg_cancel(msg, hdr);
3183 put_failure:
3184 nlmsg_free(msg);
3185 err = -EMSGSIZE;
3186 out:
3187 mutex_unlock(&cfg80211_mutex);
3188 return err;
3189 }
3190
3191 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3192 {
3193 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3194 struct nlattr *nl_reg_rule;
3195 char *alpha2 = NULL;
3196 int rem_reg_rules = 0, r = 0;
3197 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3198 struct ieee80211_regdomain *rd = NULL;
3199
3200 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3201 return -EINVAL;
3202
3203 if (!info->attrs[NL80211_ATTR_REG_RULES])
3204 return -EINVAL;
3205
3206 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3207
3208 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3209 rem_reg_rules) {
3210 num_rules++;
3211 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3212 return -EINVAL;
3213 }
3214
3215 mutex_lock(&cfg80211_mutex);
3216
3217 if (!reg_is_valid_request(alpha2)) {
3218 r = -EINVAL;
3219 goto bad_reg;
3220 }
3221
3222 size_of_regd = sizeof(struct ieee80211_regdomain) +
3223 (num_rules * sizeof(struct ieee80211_reg_rule));
3224
3225 rd = kzalloc(size_of_regd, GFP_KERNEL);
3226 if (!rd) {
3227 r = -ENOMEM;
3228 goto bad_reg;
3229 }
3230
3231 rd->n_reg_rules = num_rules;
3232 rd->alpha2[0] = alpha2[0];
3233 rd->alpha2[1] = alpha2[1];
3234
3235 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3236 rem_reg_rules) {
3237 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3238 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3239 reg_rule_policy);
3240 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3241 if (r)
3242 goto bad_reg;
3243
3244 rule_idx++;
3245
3246 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3247 r = -EINVAL;
3248 goto bad_reg;
3249 }
3250 }
3251
3252 BUG_ON(rule_idx != num_rules);
3253
3254 r = set_regdom(rd);
3255
3256 mutex_unlock(&cfg80211_mutex);
3257
3258 return r;
3259
3260 bad_reg:
3261 mutex_unlock(&cfg80211_mutex);
3262 kfree(rd);
3263 return r;
3264 }
3265
3266 static int validate_scan_freqs(struct nlattr *freqs)
3267 {
3268 struct nlattr *attr1, *attr2;
3269 int n_channels = 0, tmp1, tmp2;
3270
3271 nla_for_each_nested(attr1, freqs, tmp1) {
3272 n_channels++;
3273 /*
3274 * Some hardware has a limited channel list for
3275 * scanning, and it is pretty much nonsensical
3276 * to scan for a channel twice, so disallow that
3277 * and don't require drivers to check that the
3278 * channel list they get isn't longer than what
3279 * they can scan, as long as they can scan all
3280 * the channels they registered at once.
3281 */
3282 nla_for_each_nested(attr2, freqs, tmp2)
3283 if (attr1 != attr2 &&
3284 nla_get_u32(attr1) == nla_get_u32(attr2))
3285 return 0;
3286 }
3287
3288 return n_channels;
3289 }
3290
3291 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3292 {
3293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3294 struct net_device *dev = info->user_ptr[1];
3295 struct cfg80211_scan_request *request;
3296 struct nlattr *attr;
3297 struct wiphy *wiphy;
3298 int err, tmp, n_ssids = 0, n_channels, i;
3299 enum ieee80211_band band;
3300 size_t ie_len;
3301
3302 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3303 return -EINVAL;
3304
3305 wiphy = &rdev->wiphy;
3306
3307 if (!rdev->ops->scan)
3308 return -EOPNOTSUPP;
3309
3310 if (rdev->scan_req)
3311 return -EBUSY;
3312
3313 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3314 n_channels = validate_scan_freqs(
3315 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3316 if (!n_channels)
3317 return -EINVAL;
3318 } else {
3319 n_channels = 0;
3320
3321 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3322 if (wiphy->bands[band])
3323 n_channels += wiphy->bands[band]->n_channels;
3324 }
3325
3326 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3327 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3328 n_ssids++;
3329
3330 if (n_ssids > wiphy->max_scan_ssids)
3331 return -EINVAL;
3332
3333 if (info->attrs[NL80211_ATTR_IE])
3334 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3335 else
3336 ie_len = 0;
3337
3338 if (ie_len > wiphy->max_scan_ie_len)
3339 return -EINVAL;
3340
3341 request = kzalloc(sizeof(*request)
3342 + sizeof(*request->ssids) * n_ssids
3343 + sizeof(*request->channels) * n_channels
3344 + ie_len, GFP_KERNEL);
3345 if (!request)
3346 return -ENOMEM;
3347
3348 if (n_ssids)
3349 request->ssids = (void *)&request->channels[n_channels];
3350 request->n_ssids = n_ssids;
3351 if (ie_len) {
3352 if (request->ssids)
3353 request->ie = (void *)(request->ssids + n_ssids);
3354 else
3355 request->ie = (void *)(request->channels + n_channels);
3356 }
3357
3358 i = 0;
3359 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3360 /* user specified, bail out if channel not found */
3361 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3362 struct ieee80211_channel *chan;
3363
3364 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3365
3366 if (!chan) {
3367 err = -EINVAL;
3368 goto out_free;
3369 }
3370
3371 /* ignore disabled channels */
3372 if (chan->flags & IEEE80211_CHAN_DISABLED)
3373 continue;
3374
3375 request->channels[i] = chan;
3376 i++;
3377 }
3378 } else {
3379 /* all channels */
3380 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3381 int j;
3382 if (!wiphy->bands[band])
3383 continue;
3384 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3385 struct ieee80211_channel *chan;
3386
3387 chan = &wiphy->bands[band]->channels[j];
3388
3389 if (chan->flags & IEEE80211_CHAN_DISABLED)
3390 continue;
3391
3392 request->channels[i] = chan;
3393 i++;
3394 }
3395 }
3396 }
3397
3398 if (!i) {
3399 err = -EINVAL;
3400 goto out_free;
3401 }
3402
3403 request->n_channels = i;
3404
3405 i = 0;
3406 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3407 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3408 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3409 err = -EINVAL;
3410 goto out_free;
3411 }
3412 request->ssids[i].ssid_len = nla_len(attr);
3413 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3414 i++;
3415 }
3416 }
3417
3418 if (info->attrs[NL80211_ATTR_IE]) {
3419 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3420 memcpy((void *)request->ie,
3421 nla_data(info->attrs[NL80211_ATTR_IE]),
3422 request->ie_len);
3423 }
3424
3425 request->dev = dev;
3426 request->wiphy = &rdev->wiphy;
3427
3428 rdev->scan_req = request;
3429 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3430
3431 if (!err) {
3432 nl80211_send_scan_start(rdev, dev);
3433 dev_hold(dev);
3434 } else {
3435 out_free:
3436 rdev->scan_req = NULL;
3437 kfree(request);
3438 }
3439
3440 return err;
3441 }
3442
3443 static int nl80211_start_sched_scan(struct sk_buff *skb,
3444 struct genl_info *info)
3445 {
3446 struct cfg80211_sched_scan_request *request;
3447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3448 struct net_device *dev = info->user_ptr[1];
3449 struct nlattr *attr;
3450 struct wiphy *wiphy;
3451 int err, tmp, n_ssids = 0, n_channels, i;
3452 u32 interval;
3453 enum ieee80211_band band;
3454 size_t ie_len;
3455
3456 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3457 !rdev->ops->sched_scan_start)
3458 return -EOPNOTSUPP;
3459
3460 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3461 return -EINVAL;
3462
3463 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3464 return -EINVAL;
3465
3466 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3467 if (interval == 0)
3468 return -EINVAL;
3469
3470 wiphy = &rdev->wiphy;
3471
3472 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3473 n_channels = validate_scan_freqs(
3474 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3475 if (!n_channels)
3476 return -EINVAL;
3477 } else {
3478 n_channels = 0;
3479
3480 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3481 if (wiphy->bands[band])
3482 n_channels += wiphy->bands[band]->n_channels;
3483 }
3484
3485 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3486 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3487 tmp)
3488 n_ssids++;
3489
3490 if (n_ssids > wiphy->max_scan_ssids)
3491 return -EINVAL;
3492
3493 if (info->attrs[NL80211_ATTR_IE])
3494 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3495 else
3496 ie_len = 0;
3497
3498 if (ie_len > wiphy->max_scan_ie_len)
3499 return -EINVAL;
3500
3501 mutex_lock(&rdev->sched_scan_mtx);
3502
3503 if (rdev->sched_scan_req) {
3504 err = -EINPROGRESS;
3505 goto out;
3506 }
3507
3508 request = kzalloc(sizeof(*request)
3509 + sizeof(*request->ssids) * n_ssids
3510 + sizeof(*request->channels) * n_channels
3511 + ie_len, GFP_KERNEL);
3512 if (!request) {
3513 err = -ENOMEM;
3514 goto out;
3515 }
3516
3517 if (n_ssids)
3518 request->ssids = (void *)&request->channels[n_channels];
3519 request->n_ssids = n_ssids;
3520 if (ie_len) {
3521 if (request->ssids)
3522 request->ie = (void *)(request->ssids + n_ssids);
3523 else
3524 request->ie = (void *)(request->channels + n_channels);
3525 }
3526
3527 i = 0;
3528 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3529 /* user specified, bail out if channel not found */
3530 nla_for_each_nested(attr,
3531 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3532 tmp) {
3533 struct ieee80211_channel *chan;
3534
3535 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3536
3537 if (!chan) {
3538 err = -EINVAL;
3539 goto out_free;
3540 }
3541
3542 /* ignore disabled channels */
3543 if (chan->flags & IEEE80211_CHAN_DISABLED)
3544 continue;
3545
3546 request->channels[i] = chan;
3547 i++;
3548 }
3549 } else {
3550 /* all channels */
3551 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3552 int j;
3553 if (!wiphy->bands[band])
3554 continue;
3555 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3556 struct ieee80211_channel *chan;
3557
3558 chan = &wiphy->bands[band]->channels[j];
3559
3560 if (chan->flags & IEEE80211_CHAN_DISABLED)
3561 continue;
3562
3563 request->channels[i] = chan;
3564 i++;
3565 }
3566 }
3567 }
3568
3569 if (!i) {
3570 err = -EINVAL;
3571 goto out_free;
3572 }
3573
3574 request->n_channels = i;
3575
3576 i = 0;
3577 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3578 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3579 tmp) {
3580 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3581 err = -EINVAL;
3582 goto out_free;
3583 }
3584 request->ssids[i].ssid_len = nla_len(attr);
3585 memcpy(request->ssids[i].ssid, nla_data(attr),
3586 nla_len(attr));
3587 i++;
3588 }
3589 }
3590
3591 if (info->attrs[NL80211_ATTR_IE]) {
3592 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3593 memcpy((void *)request->ie,
3594 nla_data(info->attrs[NL80211_ATTR_IE]),
3595 request->ie_len);
3596 }
3597
3598 request->dev = dev;
3599 request->wiphy = &rdev->wiphy;
3600 request->interval = interval;
3601
3602 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3603 if (!err) {
3604 rdev->sched_scan_req = request;
3605 nl80211_send_sched_scan(rdev, dev,
3606 NL80211_CMD_START_SCHED_SCAN);
3607 goto out;
3608 }
3609
3610 out_free:
3611 kfree(request);
3612 out:
3613 mutex_unlock(&rdev->sched_scan_mtx);
3614 return err;
3615 }
3616
3617 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3618 struct genl_info *info)
3619 {
3620 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3621 int err;
3622
3623 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3624 !rdev->ops->sched_scan_stop)
3625 return -EOPNOTSUPP;
3626
3627 mutex_lock(&rdev->sched_scan_mtx);
3628 err = __cfg80211_stop_sched_scan(rdev, false);
3629 mutex_unlock(&rdev->sched_scan_mtx);
3630
3631 return err;
3632 }
3633
3634 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3635 struct cfg80211_registered_device *rdev,
3636 struct wireless_dev *wdev,
3637 struct cfg80211_internal_bss *intbss)
3638 {
3639 struct cfg80211_bss *res = &intbss->pub;
3640 void *hdr;
3641 struct nlattr *bss;
3642 int i;
3643
3644 ASSERT_WDEV_LOCK(wdev);
3645
3646 hdr = nl80211hdr_put(msg, pid, seq, flags,
3647 NL80211_CMD_NEW_SCAN_RESULTS);
3648 if (!hdr)
3649 return -1;
3650
3651 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3652 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3653
3654 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3655 if (!bss)
3656 goto nla_put_failure;
3657 if (!is_zero_ether_addr(res->bssid))
3658 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3659 if (res->information_elements && res->len_information_elements)
3660 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3661 res->len_information_elements,
3662 res->information_elements);
3663 if (res->beacon_ies && res->len_beacon_ies &&
3664 res->beacon_ies != res->information_elements)
3665 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3666 res->len_beacon_ies, res->beacon_ies);
3667 if (res->tsf)
3668 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3669 if (res->beacon_interval)
3670 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3671 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3672 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3673 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3674 jiffies_to_msecs(jiffies - intbss->ts));
3675
3676 switch (rdev->wiphy.signal_type) {
3677 case CFG80211_SIGNAL_TYPE_MBM:
3678 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3679 break;
3680 case CFG80211_SIGNAL_TYPE_UNSPEC:
3681 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3682 break;
3683 default:
3684 break;
3685 }
3686
3687 switch (wdev->iftype) {
3688 case NL80211_IFTYPE_P2P_CLIENT:
3689 case NL80211_IFTYPE_STATION:
3690 if (intbss == wdev->current_bss)
3691 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3692 NL80211_BSS_STATUS_ASSOCIATED);
3693 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3694 if (intbss != wdev->auth_bsses[i])
3695 continue;
3696 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3697 NL80211_BSS_STATUS_AUTHENTICATED);
3698 break;
3699 }
3700 break;
3701 case NL80211_IFTYPE_ADHOC:
3702 if (intbss == wdev->current_bss)
3703 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3704 NL80211_BSS_STATUS_IBSS_JOINED);
3705 break;
3706 default:
3707 break;
3708 }
3709
3710 nla_nest_end(msg, bss);
3711
3712 return genlmsg_end(msg, hdr);
3713
3714 nla_put_failure:
3715 genlmsg_cancel(msg, hdr);
3716 return -EMSGSIZE;
3717 }
3718
3719 static int nl80211_dump_scan(struct sk_buff *skb,
3720 struct netlink_callback *cb)
3721 {
3722 struct cfg80211_registered_device *rdev;
3723 struct net_device *dev;
3724 struct cfg80211_internal_bss *scan;
3725 struct wireless_dev *wdev;
3726 int start = cb->args[1], idx = 0;
3727 int err;
3728
3729 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3730 if (err)
3731 return err;
3732
3733 wdev = dev->ieee80211_ptr;
3734
3735 wdev_lock(wdev);
3736 spin_lock_bh(&rdev->bss_lock);
3737 cfg80211_bss_expire(rdev);
3738
3739 list_for_each_entry(scan, &rdev->bss_list, list) {
3740 if (++idx <= start)
3741 continue;
3742 if (nl80211_send_bss(skb,
3743 NETLINK_CB(cb->skb).pid,
3744 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3745 rdev, wdev, scan) < 0) {
3746 idx--;
3747 break;
3748 }
3749 }
3750
3751 spin_unlock_bh(&rdev->bss_lock);
3752 wdev_unlock(wdev);
3753
3754 cb->args[1] = idx;
3755 nl80211_finish_netdev_dump(rdev);
3756
3757 return skb->len;
3758 }
3759
3760 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3761 int flags, struct net_device *dev,
3762 struct survey_info *survey)
3763 {
3764 void *hdr;
3765 struct nlattr *infoattr;
3766
3767 /* Survey without a channel doesn't make sense */
3768 if (!survey->channel)
3769 return -EINVAL;
3770
3771 hdr = nl80211hdr_put(msg, pid, seq, flags,
3772 NL80211_CMD_NEW_SURVEY_RESULTS);
3773 if (!hdr)
3774 return -ENOMEM;
3775
3776 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3777
3778 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3779 if (!infoattr)
3780 goto nla_put_failure;
3781
3782 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3783 survey->channel->center_freq);
3784 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3785 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3786 survey->noise);
3787 if (survey->filled & SURVEY_INFO_IN_USE)
3788 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3789 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3790 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3791 survey->channel_time);
3792 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3793 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3794 survey->channel_time_busy);
3795 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3796 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3797 survey->channel_time_ext_busy);
3798 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3799 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3800 survey->channel_time_rx);
3801 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3802 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3803 survey->channel_time_tx);
3804
3805 nla_nest_end(msg, infoattr);
3806
3807 return genlmsg_end(msg, hdr);
3808
3809 nla_put_failure:
3810 genlmsg_cancel(msg, hdr);
3811 return -EMSGSIZE;
3812 }
3813
3814 static int nl80211_dump_survey(struct sk_buff *skb,
3815 struct netlink_callback *cb)
3816 {
3817 struct survey_info survey;
3818 struct cfg80211_registered_device *dev;
3819 struct net_device *netdev;
3820 int survey_idx = cb->args[1];
3821 int res;
3822
3823 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3824 if (res)
3825 return res;
3826
3827 if (!dev->ops->dump_survey) {
3828 res = -EOPNOTSUPP;
3829 goto out_err;
3830 }
3831
3832 while (1) {
3833 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3834 &survey);
3835 if (res == -ENOENT)
3836 break;
3837 if (res)
3838 goto out_err;
3839
3840 if (nl80211_send_survey(skb,
3841 NETLINK_CB(cb->skb).pid,
3842 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3843 netdev,
3844 &survey) < 0)
3845 goto out;
3846 survey_idx++;
3847 }
3848
3849 out:
3850 cb->args[1] = survey_idx;
3851 res = skb->len;
3852 out_err:
3853 nl80211_finish_netdev_dump(dev);
3854 return res;
3855 }
3856
3857 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3858 {
3859 return auth_type <= NL80211_AUTHTYPE_MAX;
3860 }
3861
3862 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3863 {
3864 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3865 NL80211_WPA_VERSION_2));
3866 }
3867
3868 static bool nl80211_valid_akm_suite(u32 akm)
3869 {
3870 return akm == WLAN_AKM_SUITE_8021X ||
3871 akm == WLAN_AKM_SUITE_PSK;
3872 }
3873
3874 static bool nl80211_valid_cipher_suite(u32 cipher)
3875 {
3876 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3877 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3878 cipher == WLAN_CIPHER_SUITE_TKIP ||
3879 cipher == WLAN_CIPHER_SUITE_CCMP ||
3880 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3881 }
3882
3883
3884 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3885 {
3886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3887 struct net_device *dev = info->user_ptr[1];
3888 struct ieee80211_channel *chan;
3889 const u8 *bssid, *ssid, *ie = NULL;
3890 int err, ssid_len, ie_len = 0;
3891 enum nl80211_auth_type auth_type;
3892 struct key_parse key;
3893 bool local_state_change;
3894
3895 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3896 return -EINVAL;
3897
3898 if (!info->attrs[NL80211_ATTR_MAC])
3899 return -EINVAL;
3900
3901 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3902 return -EINVAL;
3903
3904 if (!info->attrs[NL80211_ATTR_SSID])
3905 return -EINVAL;
3906
3907 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3908 return -EINVAL;
3909
3910 err = nl80211_parse_key(info, &key);
3911 if (err)
3912 return err;
3913
3914 if (key.idx >= 0) {
3915 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3916 return -EINVAL;
3917 if (!key.p.key || !key.p.key_len)
3918 return -EINVAL;
3919 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3920 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3921 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3922 key.p.key_len != WLAN_KEY_LEN_WEP104))
3923 return -EINVAL;
3924 if (key.idx > 4)
3925 return -EINVAL;
3926 } else {
3927 key.p.key_len = 0;
3928 key.p.key = NULL;
3929 }
3930
3931 if (key.idx >= 0) {
3932 int i;
3933 bool ok = false;
3934 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3935 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3936 ok = true;
3937 break;
3938 }
3939 }
3940 if (!ok)
3941 return -EINVAL;
3942 }
3943
3944 if (!rdev->ops->auth)
3945 return -EOPNOTSUPP;
3946
3947 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3948 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3949 return -EOPNOTSUPP;
3950
3951 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3952 chan = ieee80211_get_channel(&rdev->wiphy,
3953 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3954 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3955 return -EINVAL;
3956
3957 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3958 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3959
3960 if (info->attrs[NL80211_ATTR_IE]) {
3961 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3962 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3963 }
3964
3965 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3966 if (!nl80211_valid_auth_type(auth_type))
3967 return -EINVAL;
3968
3969 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3970
3971 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3972 ssid, ssid_len, ie, ie_len,
3973 key.p.key, key.p.key_len, key.idx,
3974 local_state_change);
3975 }
3976
3977 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3978 struct genl_info *info,
3979 struct cfg80211_crypto_settings *settings,
3980 int cipher_limit)
3981 {
3982 memset(settings, 0, sizeof(*settings));
3983
3984 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3985
3986 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3987 u16 proto;
3988 proto = nla_get_u16(
3989 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3990 settings->control_port_ethertype = cpu_to_be16(proto);
3991 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3992 proto != ETH_P_PAE)
3993 return -EINVAL;
3994 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3995 settings->control_port_no_encrypt = true;
3996 } else
3997 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3998
3999 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4000 void *data;
4001 int len, i;
4002
4003 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4004 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4005 settings->n_ciphers_pairwise = len / sizeof(u32);
4006
4007 if (len % sizeof(u32))
4008 return -EINVAL;
4009
4010 if (settings->n_ciphers_pairwise > cipher_limit)
4011 return -EINVAL;
4012
4013 memcpy(settings->ciphers_pairwise, data, len);
4014
4015 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4016 if (!nl80211_valid_cipher_suite(
4017 settings->ciphers_pairwise[i]))
4018 return -EINVAL;
4019 }
4020
4021 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4022 settings->cipher_group =
4023 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4024 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4025 return -EINVAL;
4026 }
4027
4028 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4029 settings->wpa_versions =
4030 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4031 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4032 return -EINVAL;
4033 }
4034
4035 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4036 void *data;
4037 int len, i;
4038
4039 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4040 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4041 settings->n_akm_suites = len / sizeof(u32);
4042
4043 if (len % sizeof(u32))
4044 return -EINVAL;
4045
4046 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4047 return -EINVAL;
4048
4049 memcpy(settings->akm_suites, data, len);
4050
4051 for (i = 0; i < settings->n_akm_suites; i++)
4052 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4053 return -EINVAL;
4054 }
4055
4056 return 0;
4057 }
4058
4059 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4060 {
4061 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4062 struct net_device *dev = info->user_ptr[1];
4063 struct cfg80211_crypto_settings crypto;
4064 struct ieee80211_channel *chan;
4065 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4066 int err, ssid_len, ie_len = 0;
4067 bool use_mfp = false;
4068
4069 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4070 return -EINVAL;
4071
4072 if (!info->attrs[NL80211_ATTR_MAC] ||
4073 !info->attrs[NL80211_ATTR_SSID] ||
4074 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4075 return -EINVAL;
4076
4077 if (!rdev->ops->assoc)
4078 return -EOPNOTSUPP;
4079
4080 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4081 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4082 return -EOPNOTSUPP;
4083
4084 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4085
4086 chan = ieee80211_get_channel(&rdev->wiphy,
4087 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4088 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4089 return -EINVAL;
4090
4091 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4092 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4093
4094 if (info->attrs[NL80211_ATTR_IE]) {
4095 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4096 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4097 }
4098
4099 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4100 enum nl80211_mfp mfp =
4101 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4102 if (mfp == NL80211_MFP_REQUIRED)
4103 use_mfp = true;
4104 else if (mfp != NL80211_MFP_NO)
4105 return -EINVAL;
4106 }
4107
4108 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4109 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4110
4111 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4112 if (!err)
4113 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4114 ssid, ssid_len, ie, ie_len, use_mfp,
4115 &crypto);
4116
4117 return err;
4118 }
4119
4120 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4121 {
4122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4123 struct net_device *dev = info->user_ptr[1];
4124 const u8 *ie = NULL, *bssid;
4125 int ie_len = 0;
4126 u16 reason_code;
4127 bool local_state_change;
4128
4129 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4130 return -EINVAL;
4131
4132 if (!info->attrs[NL80211_ATTR_MAC])
4133 return -EINVAL;
4134
4135 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4136 return -EINVAL;
4137
4138 if (!rdev->ops->deauth)
4139 return -EOPNOTSUPP;
4140
4141 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4142 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4143 return -EOPNOTSUPP;
4144
4145 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4146
4147 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4148 if (reason_code == 0) {
4149 /* Reason Code 0 is reserved */
4150 return -EINVAL;
4151 }
4152
4153 if (info->attrs[NL80211_ATTR_IE]) {
4154 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4155 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4156 }
4157
4158 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4159
4160 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4161 local_state_change);
4162 }
4163
4164 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4165 {
4166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4167 struct net_device *dev = info->user_ptr[1];
4168 const u8 *ie = NULL, *bssid;
4169 int ie_len = 0;
4170 u16 reason_code;
4171 bool local_state_change;
4172
4173 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4174 return -EINVAL;
4175
4176 if (!info->attrs[NL80211_ATTR_MAC])
4177 return -EINVAL;
4178
4179 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4180 return -EINVAL;
4181
4182 if (!rdev->ops->disassoc)
4183 return -EOPNOTSUPP;
4184
4185 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4186 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4187 return -EOPNOTSUPP;
4188
4189 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4190
4191 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4192 if (reason_code == 0) {
4193 /* Reason Code 0 is reserved */
4194 return -EINVAL;
4195 }
4196
4197 if (info->attrs[NL80211_ATTR_IE]) {
4198 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4199 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4200 }
4201
4202 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4203
4204 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4205 local_state_change);
4206 }
4207
4208 static bool
4209 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4210 int mcast_rate[IEEE80211_NUM_BANDS],
4211 int rateval)
4212 {
4213 struct wiphy *wiphy = &rdev->wiphy;
4214 bool found = false;
4215 int band, i;
4216
4217 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4218 struct ieee80211_supported_band *sband;
4219
4220 sband = wiphy->bands[band];
4221 if (!sband)
4222 continue;
4223
4224 for (i = 0; i < sband->n_bitrates; i++) {
4225 if (sband->bitrates[i].bitrate == rateval) {
4226 mcast_rate[band] = i + 1;
4227 found = true;
4228 break;
4229 }
4230 }
4231 }
4232
4233 return found;
4234 }
4235
4236 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4237 {
4238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4239 struct net_device *dev = info->user_ptr[1];
4240 struct cfg80211_ibss_params ibss;
4241 struct wiphy *wiphy;
4242 struct cfg80211_cached_keys *connkeys = NULL;
4243 int err;
4244
4245 memset(&ibss, 0, sizeof(ibss));
4246
4247 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4248 return -EINVAL;
4249
4250 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4251 !info->attrs[NL80211_ATTR_SSID] ||
4252 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4253 return -EINVAL;
4254
4255 ibss.beacon_interval = 100;
4256
4257 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4258 ibss.beacon_interval =
4259 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4260 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4261 return -EINVAL;
4262 }
4263
4264 if (!rdev->ops->join_ibss)
4265 return -EOPNOTSUPP;
4266
4267 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4268 return -EOPNOTSUPP;
4269
4270 wiphy = &rdev->wiphy;
4271
4272 if (info->attrs[NL80211_ATTR_MAC])
4273 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4274 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4275 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4276
4277 if (info->attrs[NL80211_ATTR_IE]) {
4278 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4279 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4280 }
4281
4282 ibss.channel = ieee80211_get_channel(wiphy,
4283 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4284 if (!ibss.channel ||
4285 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4286 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4287 return -EINVAL;
4288
4289 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4290 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4291
4292 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4293 u8 *rates =
4294 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4295 int n_rates =
4296 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4297 struct ieee80211_supported_band *sband =
4298 wiphy->bands[ibss.channel->band];
4299 int i, j;
4300
4301 if (n_rates == 0)
4302 return -EINVAL;
4303
4304 for (i = 0; i < n_rates; i++) {
4305 int rate = (rates[i] & 0x7f) * 5;
4306 bool found = false;
4307
4308 for (j = 0; j < sband->n_bitrates; j++) {
4309 if (sband->bitrates[j].bitrate == rate) {
4310 found = true;
4311 ibss.basic_rates |= BIT(j);
4312 break;
4313 }
4314 }
4315 if (!found)
4316 return -EINVAL;
4317 }
4318 }
4319
4320 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4321 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4322 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4323 return -EINVAL;
4324
4325 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4326 connkeys = nl80211_parse_connkeys(rdev,
4327 info->attrs[NL80211_ATTR_KEYS]);
4328 if (IS_ERR(connkeys))
4329 return PTR_ERR(connkeys);
4330 }
4331
4332 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4333 if (err)
4334 kfree(connkeys);
4335 return err;
4336 }
4337
4338 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4339 {
4340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4341 struct net_device *dev = info->user_ptr[1];
4342
4343 if (!rdev->ops->leave_ibss)
4344 return -EOPNOTSUPP;
4345
4346 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4347 return -EOPNOTSUPP;
4348
4349 return cfg80211_leave_ibss(rdev, dev, false);
4350 }
4351
4352 #ifdef CONFIG_NL80211_TESTMODE
4353 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4354 .name = "testmode",
4355 };
4356
4357 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4358 {
4359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4360 int err;
4361
4362 if (!info->attrs[NL80211_ATTR_TESTDATA])
4363 return -EINVAL;
4364
4365 err = -EOPNOTSUPP;
4366 if (rdev->ops->testmode_cmd) {
4367 rdev->testmode_info = info;
4368 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4369 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4370 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4371 rdev->testmode_info = NULL;
4372 }
4373
4374 return err;
4375 }
4376
4377 static struct sk_buff *
4378 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4379 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4380 {
4381 struct sk_buff *skb;
4382 void *hdr;
4383 struct nlattr *data;
4384
4385 skb = nlmsg_new(approxlen + 100, gfp);
4386 if (!skb)
4387 return NULL;
4388
4389 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4390 if (!hdr) {
4391 kfree_skb(skb);
4392 return NULL;
4393 }
4394
4395 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4396 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4397
4398 ((void **)skb->cb)[0] = rdev;
4399 ((void **)skb->cb)[1] = hdr;
4400 ((void **)skb->cb)[2] = data;
4401
4402 return skb;
4403
4404 nla_put_failure:
4405 kfree_skb(skb);
4406 return NULL;
4407 }
4408
4409 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4410 int approxlen)
4411 {
4412 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4413
4414 if (WARN_ON(!rdev->testmode_info))
4415 return NULL;
4416
4417 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4418 rdev->testmode_info->snd_pid,
4419 rdev->testmode_info->snd_seq,
4420 GFP_KERNEL);
4421 }
4422 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4423
4424 int cfg80211_testmode_reply(struct sk_buff *skb)
4425 {
4426 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4427 void *hdr = ((void **)skb->cb)[1];
4428 struct nlattr *data = ((void **)skb->cb)[2];
4429
4430 if (WARN_ON(!rdev->testmode_info)) {
4431 kfree_skb(skb);
4432 return -EINVAL;
4433 }
4434
4435 nla_nest_end(skb, data);
4436 genlmsg_end(skb, hdr);
4437 return genlmsg_reply(skb, rdev->testmode_info);
4438 }
4439 EXPORT_SYMBOL(cfg80211_testmode_reply);
4440
4441 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4442 int approxlen, gfp_t gfp)
4443 {
4444 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4445
4446 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4447 }
4448 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4449
4450 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4451 {
4452 void *hdr = ((void **)skb->cb)[1];
4453 struct nlattr *data = ((void **)skb->cb)[2];
4454
4455 nla_nest_end(skb, data);
4456 genlmsg_end(skb, hdr);
4457 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4458 }
4459 EXPORT_SYMBOL(cfg80211_testmode_event);
4460 #endif
4461
4462 static int nl80211_connect(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 cfg80211_connect_params connect;
4467 struct wiphy *wiphy;
4468 struct cfg80211_cached_keys *connkeys = NULL;
4469 int err;
4470
4471 memset(&connect, 0, sizeof(connect));
4472
4473 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4474 return -EINVAL;
4475
4476 if (!info->attrs[NL80211_ATTR_SSID] ||
4477 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4478 return -EINVAL;
4479
4480 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4481 connect.auth_type =
4482 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4483 if (!nl80211_valid_auth_type(connect.auth_type))
4484 return -EINVAL;
4485 } else
4486 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4487
4488 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4489
4490 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4491 NL80211_MAX_NR_CIPHER_SUITES);
4492 if (err)
4493 return err;
4494
4495 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4496 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4497 return -EOPNOTSUPP;
4498
4499 wiphy = &rdev->wiphy;
4500
4501 if (info->attrs[NL80211_ATTR_MAC])
4502 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4503 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4504 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4505
4506 if (info->attrs[NL80211_ATTR_IE]) {
4507 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4508 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4509 }
4510
4511 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4512 connect.channel =
4513 ieee80211_get_channel(wiphy,
4514 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4515 if (!connect.channel ||
4516 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4517 return -EINVAL;
4518 }
4519
4520 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4521 connkeys = nl80211_parse_connkeys(rdev,
4522 info->attrs[NL80211_ATTR_KEYS]);
4523 if (IS_ERR(connkeys))
4524 return PTR_ERR(connkeys);
4525 }
4526
4527 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4528 if (err)
4529 kfree(connkeys);
4530 return err;
4531 }
4532
4533 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4534 {
4535 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4536 struct net_device *dev = info->user_ptr[1];
4537 u16 reason;
4538
4539 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4540 reason = WLAN_REASON_DEAUTH_LEAVING;
4541 else
4542 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4543
4544 if (reason == 0)
4545 return -EINVAL;
4546
4547 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4548 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4549 return -EOPNOTSUPP;
4550
4551 return cfg80211_disconnect(rdev, dev, reason, true);
4552 }
4553
4554 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4555 {
4556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4557 struct net *net;
4558 int err;
4559 u32 pid;
4560
4561 if (!info->attrs[NL80211_ATTR_PID])
4562 return -EINVAL;
4563
4564 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4565
4566 net = get_net_ns_by_pid(pid);
4567 if (IS_ERR(net))
4568 return PTR_ERR(net);
4569
4570 err = 0;
4571
4572 /* check if anything to do */
4573 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4574 err = cfg80211_switch_netns(rdev, net);
4575
4576 put_net(net);
4577 return err;
4578 }
4579
4580 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4581 {
4582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4583 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4584 struct cfg80211_pmksa *pmksa) = NULL;
4585 struct net_device *dev = info->user_ptr[1];
4586 struct cfg80211_pmksa pmksa;
4587
4588 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4589
4590 if (!info->attrs[NL80211_ATTR_MAC])
4591 return -EINVAL;
4592
4593 if (!info->attrs[NL80211_ATTR_PMKID])
4594 return -EINVAL;
4595
4596 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4597 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4598
4599 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4600 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4601 return -EOPNOTSUPP;
4602
4603 switch (info->genlhdr->cmd) {
4604 case NL80211_CMD_SET_PMKSA:
4605 rdev_ops = rdev->ops->set_pmksa;
4606 break;
4607 case NL80211_CMD_DEL_PMKSA:
4608 rdev_ops = rdev->ops->del_pmksa;
4609 break;
4610 default:
4611 WARN_ON(1);
4612 break;
4613 }
4614
4615 if (!rdev_ops)
4616 return -EOPNOTSUPP;
4617
4618 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4619 }
4620
4621 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4622 {
4623 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4624 struct net_device *dev = info->user_ptr[1];
4625
4626 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4627 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4628 return -EOPNOTSUPP;
4629
4630 if (!rdev->ops->flush_pmksa)
4631 return -EOPNOTSUPP;
4632
4633 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4634 }
4635
4636 static int nl80211_remain_on_channel(struct sk_buff *skb,
4637 struct genl_info *info)
4638 {
4639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4640 struct net_device *dev = info->user_ptr[1];
4641 struct ieee80211_channel *chan;
4642 struct sk_buff *msg;
4643 void *hdr;
4644 u64 cookie;
4645 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4646 u32 freq, duration;
4647 int err;
4648
4649 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4650 !info->attrs[NL80211_ATTR_DURATION])
4651 return -EINVAL;
4652
4653 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4654
4655 /*
4656 * We should be on that channel for at least one jiffie,
4657 * and more than 5 seconds seems excessive.
4658 */
4659 if (!duration || !msecs_to_jiffies(duration) ||
4660 duration > rdev->wiphy.max_remain_on_channel_duration)
4661 return -EINVAL;
4662
4663 if (!rdev->ops->remain_on_channel)
4664 return -EOPNOTSUPP;
4665
4666 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4667 channel_type = nla_get_u32(
4668 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4669 if (channel_type != NL80211_CHAN_NO_HT &&
4670 channel_type != NL80211_CHAN_HT20 &&
4671 channel_type != NL80211_CHAN_HT40PLUS &&
4672 channel_type != NL80211_CHAN_HT40MINUS)
4673 return -EINVAL;
4674 }
4675
4676 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4677 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4678 if (chan == NULL)
4679 return -EINVAL;
4680
4681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4682 if (!msg)
4683 return -ENOMEM;
4684
4685 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4686 NL80211_CMD_REMAIN_ON_CHANNEL);
4687
4688 if (IS_ERR(hdr)) {
4689 err = PTR_ERR(hdr);
4690 goto free_msg;
4691 }
4692
4693 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4694 channel_type, duration, &cookie);
4695
4696 if (err)
4697 goto free_msg;
4698
4699 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4700
4701 genlmsg_end(msg, hdr);
4702
4703 return genlmsg_reply(msg, info);
4704
4705 nla_put_failure:
4706 err = -ENOBUFS;
4707 free_msg:
4708 nlmsg_free(msg);
4709 return err;
4710 }
4711
4712 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4713 struct genl_info *info)
4714 {
4715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4716 struct net_device *dev = info->user_ptr[1];
4717 u64 cookie;
4718
4719 if (!info->attrs[NL80211_ATTR_COOKIE])
4720 return -EINVAL;
4721
4722 if (!rdev->ops->cancel_remain_on_channel)
4723 return -EOPNOTSUPP;
4724
4725 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4726
4727 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4728 }
4729
4730 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4731 u8 *rates, u8 rates_len)
4732 {
4733 u8 i;
4734 u32 mask = 0;
4735
4736 for (i = 0; i < rates_len; i++) {
4737 int rate = (rates[i] & 0x7f) * 5;
4738 int ridx;
4739 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4740 struct ieee80211_rate *srate =
4741 &sband->bitrates[ridx];
4742 if (rate == srate->bitrate) {
4743 mask |= 1 << ridx;
4744 break;
4745 }
4746 }
4747 if (ridx == sband->n_bitrates)
4748 return 0; /* rate not found */
4749 }
4750
4751 return mask;
4752 }
4753
4754 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4755 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4756 .len = NL80211_MAX_SUPP_RATES },
4757 };
4758
4759 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4760 struct genl_info *info)
4761 {
4762 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4764 struct cfg80211_bitrate_mask mask;
4765 int rem, i;
4766 struct net_device *dev = info->user_ptr[1];
4767 struct nlattr *tx_rates;
4768 struct ieee80211_supported_band *sband;
4769
4770 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4771 return -EINVAL;
4772
4773 if (!rdev->ops->set_bitrate_mask)
4774 return -EOPNOTSUPP;
4775
4776 memset(&mask, 0, sizeof(mask));
4777 /* Default to all rates enabled */
4778 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4779 sband = rdev->wiphy.bands[i];
4780 mask.control[i].legacy =
4781 sband ? (1 << sband->n_bitrates) - 1 : 0;
4782 }
4783
4784 /*
4785 * The nested attribute uses enum nl80211_band as the index. This maps
4786 * directly to the enum ieee80211_band values used in cfg80211.
4787 */
4788 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4789 {
4790 enum ieee80211_band band = nla_type(tx_rates);
4791 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4792 return -EINVAL;
4793 sband = rdev->wiphy.bands[band];
4794 if (sband == NULL)
4795 return -EINVAL;
4796 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4797 nla_len(tx_rates), nl80211_txattr_policy);
4798 if (tb[NL80211_TXRATE_LEGACY]) {
4799 mask.control[band].legacy = rateset_to_mask(
4800 sband,
4801 nla_data(tb[NL80211_TXRATE_LEGACY]),
4802 nla_len(tb[NL80211_TXRATE_LEGACY]));
4803 if (mask.control[band].legacy == 0)
4804 return -EINVAL;
4805 }
4806 }
4807
4808 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4809 }
4810
4811 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4812 {
4813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4814 struct net_device *dev = info->user_ptr[1];
4815 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4816
4817 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4818 return -EINVAL;
4819
4820 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4821 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4822
4823 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4824 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4825 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4826 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4827 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4828 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4829 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4830 return -EOPNOTSUPP;
4831
4832 /* not much point in registering if we can't reply */
4833 if (!rdev->ops->mgmt_tx)
4834 return -EOPNOTSUPP;
4835
4836 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4837 frame_type,
4838 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4839 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4840 }
4841
4842 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4843 {
4844 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4845 struct net_device *dev = info->user_ptr[1];
4846 struct ieee80211_channel *chan;
4847 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4848 bool channel_type_valid = false;
4849 u32 freq;
4850 int err;
4851 void *hdr;
4852 u64 cookie;
4853 struct sk_buff *msg;
4854 unsigned int wait = 0;
4855 bool offchan;
4856
4857 if (!info->attrs[NL80211_ATTR_FRAME] ||
4858 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4859 return -EINVAL;
4860
4861 if (!rdev->ops->mgmt_tx)
4862 return -EOPNOTSUPP;
4863
4864 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4865 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4866 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4867 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4868 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4869 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4870 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4871 return -EOPNOTSUPP;
4872
4873 if (info->attrs[NL80211_ATTR_DURATION]) {
4874 if (!rdev->ops->mgmt_tx_cancel_wait)
4875 return -EINVAL;
4876 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4877 }
4878
4879 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4880 channel_type = nla_get_u32(
4881 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4882 if (channel_type != NL80211_CHAN_NO_HT &&
4883 channel_type != NL80211_CHAN_HT20 &&
4884 channel_type != NL80211_CHAN_HT40PLUS &&
4885 channel_type != NL80211_CHAN_HT40MINUS)
4886 return -EINVAL;
4887 channel_type_valid = true;
4888 }
4889
4890 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4891
4892 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4893 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4894 if (chan == NULL)
4895 return -EINVAL;
4896
4897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4898 if (!msg)
4899 return -ENOMEM;
4900
4901 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4902 NL80211_CMD_FRAME);
4903
4904 if (IS_ERR(hdr)) {
4905 err = PTR_ERR(hdr);
4906 goto free_msg;
4907 }
4908 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4909 channel_type_valid, wait,
4910 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4911 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4912 &cookie);
4913 if (err)
4914 goto free_msg;
4915
4916 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4917
4918 genlmsg_end(msg, hdr);
4919 return genlmsg_reply(msg, info);
4920
4921 nla_put_failure:
4922 err = -ENOBUFS;
4923 free_msg:
4924 nlmsg_free(msg);
4925 return err;
4926 }
4927
4928 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4929 {
4930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4931 struct net_device *dev = info->user_ptr[1];
4932 u64 cookie;
4933
4934 if (!info->attrs[NL80211_ATTR_COOKIE])
4935 return -EINVAL;
4936
4937 if (!rdev->ops->mgmt_tx_cancel_wait)
4938 return -EOPNOTSUPP;
4939
4940 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4941 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4942 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4943 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4944 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4945 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4946 return -EOPNOTSUPP;
4947
4948 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4949
4950 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4951 }
4952
4953 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4954 {
4955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4956 struct wireless_dev *wdev;
4957 struct net_device *dev = info->user_ptr[1];
4958 u8 ps_state;
4959 bool state;
4960 int err;
4961
4962 if (!info->attrs[NL80211_ATTR_PS_STATE])
4963 return -EINVAL;
4964
4965 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4966
4967 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4968 return -EINVAL;
4969
4970 wdev = dev->ieee80211_ptr;
4971
4972 if (!rdev->ops->set_power_mgmt)
4973 return -EOPNOTSUPP;
4974
4975 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4976
4977 if (state == wdev->ps)
4978 return 0;
4979
4980 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4981 wdev->ps_timeout);
4982 if (!err)
4983 wdev->ps = state;
4984 return err;
4985 }
4986
4987 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4988 {
4989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4990 enum nl80211_ps_state ps_state;
4991 struct wireless_dev *wdev;
4992 struct net_device *dev = info->user_ptr[1];
4993 struct sk_buff *msg;
4994 void *hdr;
4995 int err;
4996
4997 wdev = dev->ieee80211_ptr;
4998
4999 if (!rdev->ops->set_power_mgmt)
5000 return -EOPNOTSUPP;
5001
5002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5003 if (!msg)
5004 return -ENOMEM;
5005
5006 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5007 NL80211_CMD_GET_POWER_SAVE);
5008 if (!hdr) {
5009 err = -ENOBUFS;
5010 goto free_msg;
5011 }
5012
5013 if (wdev->ps)
5014 ps_state = NL80211_PS_ENABLED;
5015 else
5016 ps_state = NL80211_PS_DISABLED;
5017
5018 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5019
5020 genlmsg_end(msg, hdr);
5021 return genlmsg_reply(msg, info);
5022
5023 nla_put_failure:
5024 err = -ENOBUFS;
5025 free_msg:
5026 nlmsg_free(msg);
5027 return err;
5028 }
5029
5030 static struct nla_policy
5031 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5032 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5033 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5034 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5035 };
5036
5037 static int nl80211_set_cqm_rssi(struct genl_info *info,
5038 s32 threshold, u32 hysteresis)
5039 {
5040 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5041 struct wireless_dev *wdev;
5042 struct net_device *dev = info->user_ptr[1];
5043
5044 if (threshold > 0)
5045 return -EINVAL;
5046
5047 wdev = dev->ieee80211_ptr;
5048
5049 if (!rdev->ops->set_cqm_rssi_config)
5050 return -EOPNOTSUPP;
5051
5052 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5053 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5054 return -EOPNOTSUPP;
5055
5056 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5057 threshold, hysteresis);
5058 }
5059
5060 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5061 {
5062 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5063 struct nlattr *cqm;
5064 int err;
5065
5066 cqm = info->attrs[NL80211_ATTR_CQM];
5067 if (!cqm) {
5068 err = -EINVAL;
5069 goto out;
5070 }
5071
5072 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5073 nl80211_attr_cqm_policy);
5074 if (err)
5075 goto out;
5076
5077 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5078 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5079 s32 threshold;
5080 u32 hysteresis;
5081 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5082 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5083 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5084 } else
5085 err = -EINVAL;
5086
5087 out:
5088 return err;
5089 }
5090
5091 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5092 {
5093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5094 struct net_device *dev = info->user_ptr[1];
5095 struct mesh_config cfg;
5096 struct mesh_setup setup;
5097 int err;
5098
5099 /* start with default */
5100 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5101 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5102
5103 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5104 /* and parse parameters if given */
5105 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5106 if (err)
5107 return err;
5108 }
5109
5110 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5111 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5112 return -EINVAL;
5113
5114 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5115 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5116
5117 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5118 /* parse additional setup parameters if given */
5119 err = nl80211_parse_mesh_setup(info, &setup);
5120 if (err)
5121 return err;
5122 }
5123
5124 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5125 }
5126
5127 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5128 {
5129 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5130 struct net_device *dev = info->user_ptr[1];
5131
5132 return cfg80211_leave_mesh(rdev, dev);
5133 }
5134
5135 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5136 {
5137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5138 struct sk_buff *msg;
5139 void *hdr;
5140
5141 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5142 return -EOPNOTSUPP;
5143
5144 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5145 if (!msg)
5146 return -ENOMEM;
5147
5148 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5149 NL80211_CMD_GET_WOWLAN);
5150 if (!hdr)
5151 goto nla_put_failure;
5152
5153 if (rdev->wowlan) {
5154 struct nlattr *nl_wowlan;
5155
5156 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5157 if (!nl_wowlan)
5158 goto nla_put_failure;
5159
5160 if (rdev->wowlan->any)
5161 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5162 if (rdev->wowlan->disconnect)
5163 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5164 if (rdev->wowlan->magic_pkt)
5165 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5166 if (rdev->wowlan->n_patterns) {
5167 struct nlattr *nl_pats, *nl_pat;
5168 int i, pat_len;
5169
5170 nl_pats = nla_nest_start(msg,
5171 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5172 if (!nl_pats)
5173 goto nla_put_failure;
5174
5175 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5176 nl_pat = nla_nest_start(msg, i + 1);
5177 if (!nl_pat)
5178 goto nla_put_failure;
5179 pat_len = rdev->wowlan->patterns[i].pattern_len;
5180 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5181 DIV_ROUND_UP(pat_len, 8),
5182 rdev->wowlan->patterns[i].mask);
5183 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5184 pat_len,
5185 rdev->wowlan->patterns[i].pattern);
5186 nla_nest_end(msg, nl_pat);
5187 }
5188 nla_nest_end(msg, nl_pats);
5189 }
5190
5191 nla_nest_end(msg, nl_wowlan);
5192 }
5193
5194 genlmsg_end(msg, hdr);
5195 return genlmsg_reply(msg, info);
5196
5197 nla_put_failure:
5198 nlmsg_free(msg);
5199 return -ENOBUFS;
5200 }
5201
5202 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5203 {
5204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5205 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5206 struct cfg80211_wowlan no_triggers = {};
5207 struct cfg80211_wowlan new_triggers = {};
5208 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5209 int err, i;
5210
5211 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5212 return -EOPNOTSUPP;
5213
5214 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5215 goto no_triggers;
5216
5217 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5218 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5219 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5220 nl80211_wowlan_policy);
5221 if (err)
5222 return err;
5223
5224 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5225 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5226 return -EINVAL;
5227 new_triggers.any = true;
5228 }
5229
5230 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5231 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5232 return -EINVAL;
5233 new_triggers.disconnect = true;
5234 }
5235
5236 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5237 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5238 return -EINVAL;
5239 new_triggers.magic_pkt = true;
5240 }
5241
5242 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5243 struct nlattr *pat;
5244 int n_patterns = 0;
5245 int rem, pat_len, mask_len;
5246 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5247
5248 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5249 rem)
5250 n_patterns++;
5251 if (n_patterns > wowlan->n_patterns)
5252 return -EINVAL;
5253
5254 new_triggers.patterns = kcalloc(n_patterns,
5255 sizeof(new_triggers.patterns[0]),
5256 GFP_KERNEL);
5257 if (!new_triggers.patterns)
5258 return -ENOMEM;
5259
5260 new_triggers.n_patterns = n_patterns;
5261 i = 0;
5262
5263 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5264 rem) {
5265 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5266 nla_data(pat), nla_len(pat), NULL);
5267 err = -EINVAL;
5268 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5269 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5270 goto error;
5271 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5272 mask_len = DIV_ROUND_UP(pat_len, 8);
5273 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5274 mask_len)
5275 goto error;
5276 if (pat_len > wowlan->pattern_max_len ||
5277 pat_len < wowlan->pattern_min_len)
5278 goto error;
5279
5280 new_triggers.patterns[i].mask =
5281 kmalloc(mask_len + pat_len, GFP_KERNEL);
5282 if (!new_triggers.patterns[i].mask) {
5283 err = -ENOMEM;
5284 goto error;
5285 }
5286 new_triggers.patterns[i].pattern =
5287 new_triggers.patterns[i].mask + mask_len;
5288 memcpy(new_triggers.patterns[i].mask,
5289 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5290 mask_len);
5291 new_triggers.patterns[i].pattern_len = pat_len;
5292 memcpy(new_triggers.patterns[i].pattern,
5293 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5294 pat_len);
5295 i++;
5296 }
5297 }
5298
5299 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5300 struct cfg80211_wowlan *ntrig;
5301 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5302 GFP_KERNEL);
5303 if (!ntrig) {
5304 err = -ENOMEM;
5305 goto error;
5306 }
5307 cfg80211_rdev_free_wowlan(rdev);
5308 rdev->wowlan = ntrig;
5309 } else {
5310 no_triggers:
5311 cfg80211_rdev_free_wowlan(rdev);
5312 rdev->wowlan = NULL;
5313 }
5314
5315 return 0;
5316 error:
5317 for (i = 0; i < new_triggers.n_patterns; i++)
5318 kfree(new_triggers.patterns[i].mask);
5319 kfree(new_triggers.patterns);
5320 return err;
5321 }
5322
5323 #define NL80211_FLAG_NEED_WIPHY 0x01
5324 #define NL80211_FLAG_NEED_NETDEV 0x02
5325 #define NL80211_FLAG_NEED_RTNL 0x04
5326 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5327 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5328 NL80211_FLAG_CHECK_NETDEV_UP)
5329
5330 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5331 struct genl_info *info)
5332 {
5333 struct cfg80211_registered_device *rdev;
5334 struct net_device *dev;
5335 int err;
5336 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5337
5338 if (rtnl)
5339 rtnl_lock();
5340
5341 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5342 rdev = cfg80211_get_dev_from_info(info);
5343 if (IS_ERR(rdev)) {
5344 if (rtnl)
5345 rtnl_unlock();
5346 return PTR_ERR(rdev);
5347 }
5348 info->user_ptr[0] = rdev;
5349 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5350 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5351 if (err) {
5352 if (rtnl)
5353 rtnl_unlock();
5354 return err;
5355 }
5356 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5357 !netif_running(dev)) {
5358 cfg80211_unlock_rdev(rdev);
5359 dev_put(dev);
5360 if (rtnl)
5361 rtnl_unlock();
5362 return -ENETDOWN;
5363 }
5364 info->user_ptr[0] = rdev;
5365 info->user_ptr[1] = dev;
5366 }
5367
5368 return 0;
5369 }
5370
5371 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5372 struct genl_info *info)
5373 {
5374 if (info->user_ptr[0])
5375 cfg80211_unlock_rdev(info->user_ptr[0]);
5376 if (info->user_ptr[1])
5377 dev_put(info->user_ptr[1]);
5378 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5379 rtnl_unlock();
5380 }
5381
5382 static struct genl_ops nl80211_ops[] = {
5383 {
5384 .cmd = NL80211_CMD_GET_WIPHY,
5385 .doit = nl80211_get_wiphy,
5386 .dumpit = nl80211_dump_wiphy,
5387 .policy = nl80211_policy,
5388 /* can be retrieved by unprivileged users */
5389 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5390 },
5391 {
5392 .cmd = NL80211_CMD_SET_WIPHY,
5393 .doit = nl80211_set_wiphy,
5394 .policy = nl80211_policy,
5395 .flags = GENL_ADMIN_PERM,
5396 .internal_flags = NL80211_FLAG_NEED_RTNL,
5397 },
5398 {
5399 .cmd = NL80211_CMD_GET_INTERFACE,
5400 .doit = nl80211_get_interface,
5401 .dumpit = nl80211_dump_interface,
5402 .policy = nl80211_policy,
5403 /* can be retrieved by unprivileged users */
5404 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5405 },
5406 {
5407 .cmd = NL80211_CMD_SET_INTERFACE,
5408 .doit = nl80211_set_interface,
5409 .policy = nl80211_policy,
5410 .flags = GENL_ADMIN_PERM,
5411 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5412 NL80211_FLAG_NEED_RTNL,
5413 },
5414 {
5415 .cmd = NL80211_CMD_NEW_INTERFACE,
5416 .doit = nl80211_new_interface,
5417 .policy = nl80211_policy,
5418 .flags = GENL_ADMIN_PERM,
5419 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5420 NL80211_FLAG_NEED_RTNL,
5421 },
5422 {
5423 .cmd = NL80211_CMD_DEL_INTERFACE,
5424 .doit = nl80211_del_interface,
5425 .policy = nl80211_policy,
5426 .flags = GENL_ADMIN_PERM,
5427 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5428 NL80211_FLAG_NEED_RTNL,
5429 },
5430 {
5431 .cmd = NL80211_CMD_GET_KEY,
5432 .doit = nl80211_get_key,
5433 .policy = nl80211_policy,
5434 .flags = GENL_ADMIN_PERM,
5435 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5436 NL80211_FLAG_NEED_RTNL,
5437 },
5438 {
5439 .cmd = NL80211_CMD_SET_KEY,
5440 .doit = nl80211_set_key,
5441 .policy = nl80211_policy,
5442 .flags = GENL_ADMIN_PERM,
5443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5444 NL80211_FLAG_NEED_RTNL,
5445 },
5446 {
5447 .cmd = NL80211_CMD_NEW_KEY,
5448 .doit = nl80211_new_key,
5449 .policy = nl80211_policy,
5450 .flags = GENL_ADMIN_PERM,
5451 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5452 NL80211_FLAG_NEED_RTNL,
5453 },
5454 {
5455 .cmd = NL80211_CMD_DEL_KEY,
5456 .doit = nl80211_del_key,
5457 .policy = nl80211_policy,
5458 .flags = GENL_ADMIN_PERM,
5459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5460 NL80211_FLAG_NEED_RTNL,
5461 },
5462 {
5463 .cmd = NL80211_CMD_SET_BEACON,
5464 .policy = nl80211_policy,
5465 .flags = GENL_ADMIN_PERM,
5466 .doit = nl80211_addset_beacon,
5467 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5468 NL80211_FLAG_NEED_RTNL,
5469 },
5470 {
5471 .cmd = NL80211_CMD_NEW_BEACON,
5472 .policy = nl80211_policy,
5473 .flags = GENL_ADMIN_PERM,
5474 .doit = nl80211_addset_beacon,
5475 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5476 NL80211_FLAG_NEED_RTNL,
5477 },
5478 {
5479 .cmd = NL80211_CMD_DEL_BEACON,
5480 .policy = nl80211_policy,
5481 .flags = GENL_ADMIN_PERM,
5482 .doit = nl80211_del_beacon,
5483 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5484 NL80211_FLAG_NEED_RTNL,
5485 },
5486 {
5487 .cmd = NL80211_CMD_GET_STATION,
5488 .doit = nl80211_get_station,
5489 .dumpit = nl80211_dump_station,
5490 .policy = nl80211_policy,
5491 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5492 NL80211_FLAG_NEED_RTNL,
5493 },
5494 {
5495 .cmd = NL80211_CMD_SET_STATION,
5496 .doit = nl80211_set_station,
5497 .policy = nl80211_policy,
5498 .flags = GENL_ADMIN_PERM,
5499 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5500 NL80211_FLAG_NEED_RTNL,
5501 },
5502 {
5503 .cmd = NL80211_CMD_NEW_STATION,
5504 .doit = nl80211_new_station,
5505 .policy = nl80211_policy,
5506 .flags = GENL_ADMIN_PERM,
5507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5508 NL80211_FLAG_NEED_RTNL,
5509 },
5510 {
5511 .cmd = NL80211_CMD_DEL_STATION,
5512 .doit = nl80211_del_station,
5513 .policy = nl80211_policy,
5514 .flags = GENL_ADMIN_PERM,
5515 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5516 NL80211_FLAG_NEED_RTNL,
5517 },
5518 {
5519 .cmd = NL80211_CMD_GET_MPATH,
5520 .doit = nl80211_get_mpath,
5521 .dumpit = nl80211_dump_mpath,
5522 .policy = nl80211_policy,
5523 .flags = GENL_ADMIN_PERM,
5524 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5525 NL80211_FLAG_NEED_RTNL,
5526 },
5527 {
5528 .cmd = NL80211_CMD_SET_MPATH,
5529 .doit = nl80211_set_mpath,
5530 .policy = nl80211_policy,
5531 .flags = GENL_ADMIN_PERM,
5532 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5533 NL80211_FLAG_NEED_RTNL,
5534 },
5535 {
5536 .cmd = NL80211_CMD_NEW_MPATH,
5537 .doit = nl80211_new_mpath,
5538 .policy = nl80211_policy,
5539 .flags = GENL_ADMIN_PERM,
5540 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5541 NL80211_FLAG_NEED_RTNL,
5542 },
5543 {
5544 .cmd = NL80211_CMD_DEL_MPATH,
5545 .doit = nl80211_del_mpath,
5546 .policy = nl80211_policy,
5547 .flags = GENL_ADMIN_PERM,
5548 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5549 NL80211_FLAG_NEED_RTNL,
5550 },
5551 {
5552 .cmd = NL80211_CMD_SET_BSS,
5553 .doit = nl80211_set_bss,
5554 .policy = nl80211_policy,
5555 .flags = GENL_ADMIN_PERM,
5556 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5557 NL80211_FLAG_NEED_RTNL,
5558 },
5559 {
5560 .cmd = NL80211_CMD_GET_REG,
5561 .doit = nl80211_get_reg,
5562 .policy = nl80211_policy,
5563 /* can be retrieved by unprivileged users */
5564 },
5565 {
5566 .cmd = NL80211_CMD_SET_REG,
5567 .doit = nl80211_set_reg,
5568 .policy = nl80211_policy,
5569 .flags = GENL_ADMIN_PERM,
5570 },
5571 {
5572 .cmd = NL80211_CMD_REQ_SET_REG,
5573 .doit = nl80211_req_set_reg,
5574 .policy = nl80211_policy,
5575 .flags = GENL_ADMIN_PERM,
5576 },
5577 {
5578 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5579 .doit = nl80211_get_mesh_config,
5580 .policy = nl80211_policy,
5581 /* can be retrieved by unprivileged users */
5582 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5583 NL80211_FLAG_NEED_RTNL,
5584 },
5585 {
5586 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5587 .doit = nl80211_update_mesh_config,
5588 .policy = nl80211_policy,
5589 .flags = GENL_ADMIN_PERM,
5590 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5591 NL80211_FLAG_NEED_RTNL,
5592 },
5593 {
5594 .cmd = NL80211_CMD_TRIGGER_SCAN,
5595 .doit = nl80211_trigger_scan,
5596 .policy = nl80211_policy,
5597 .flags = GENL_ADMIN_PERM,
5598 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5599 NL80211_FLAG_NEED_RTNL,
5600 },
5601 {
5602 .cmd = NL80211_CMD_GET_SCAN,
5603 .policy = nl80211_policy,
5604 .dumpit = nl80211_dump_scan,
5605 },
5606 {
5607 .cmd = NL80211_CMD_START_SCHED_SCAN,
5608 .doit = nl80211_start_sched_scan,
5609 .policy = nl80211_policy,
5610 .flags = GENL_ADMIN_PERM,
5611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5612 NL80211_FLAG_NEED_RTNL,
5613 },
5614 {
5615 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5616 .doit = nl80211_stop_sched_scan,
5617 .policy = nl80211_policy,
5618 .flags = GENL_ADMIN_PERM,
5619 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5620 NL80211_FLAG_NEED_RTNL,
5621 },
5622 {
5623 .cmd = NL80211_CMD_AUTHENTICATE,
5624 .doit = nl80211_authenticate,
5625 .policy = nl80211_policy,
5626 .flags = GENL_ADMIN_PERM,
5627 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5628 NL80211_FLAG_NEED_RTNL,
5629 },
5630 {
5631 .cmd = NL80211_CMD_ASSOCIATE,
5632 .doit = nl80211_associate,
5633 .policy = nl80211_policy,
5634 .flags = GENL_ADMIN_PERM,
5635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5636 NL80211_FLAG_NEED_RTNL,
5637 },
5638 {
5639 .cmd = NL80211_CMD_DEAUTHENTICATE,
5640 .doit = nl80211_deauthenticate,
5641 .policy = nl80211_policy,
5642 .flags = GENL_ADMIN_PERM,
5643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5644 NL80211_FLAG_NEED_RTNL,
5645 },
5646 {
5647 .cmd = NL80211_CMD_DISASSOCIATE,
5648 .doit = nl80211_disassociate,
5649 .policy = nl80211_policy,
5650 .flags = GENL_ADMIN_PERM,
5651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5652 NL80211_FLAG_NEED_RTNL,
5653 },
5654 {
5655 .cmd = NL80211_CMD_JOIN_IBSS,
5656 .doit = nl80211_join_ibss,
5657 .policy = nl80211_policy,
5658 .flags = GENL_ADMIN_PERM,
5659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5660 NL80211_FLAG_NEED_RTNL,
5661 },
5662 {
5663 .cmd = NL80211_CMD_LEAVE_IBSS,
5664 .doit = nl80211_leave_ibss,
5665 .policy = nl80211_policy,
5666 .flags = GENL_ADMIN_PERM,
5667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5668 NL80211_FLAG_NEED_RTNL,
5669 },
5670 #ifdef CONFIG_NL80211_TESTMODE
5671 {
5672 .cmd = NL80211_CMD_TESTMODE,
5673 .doit = nl80211_testmode_do,
5674 .policy = nl80211_policy,
5675 .flags = GENL_ADMIN_PERM,
5676 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5677 NL80211_FLAG_NEED_RTNL,
5678 },
5679 #endif
5680 {
5681 .cmd = NL80211_CMD_CONNECT,
5682 .doit = nl80211_connect,
5683 .policy = nl80211_policy,
5684 .flags = GENL_ADMIN_PERM,
5685 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5686 NL80211_FLAG_NEED_RTNL,
5687 },
5688 {
5689 .cmd = NL80211_CMD_DISCONNECT,
5690 .doit = nl80211_disconnect,
5691 .policy = nl80211_policy,
5692 .flags = GENL_ADMIN_PERM,
5693 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5694 NL80211_FLAG_NEED_RTNL,
5695 },
5696 {
5697 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5698 .doit = nl80211_wiphy_netns,
5699 .policy = nl80211_policy,
5700 .flags = GENL_ADMIN_PERM,
5701 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5702 NL80211_FLAG_NEED_RTNL,
5703 },
5704 {
5705 .cmd = NL80211_CMD_GET_SURVEY,
5706 .policy = nl80211_policy,
5707 .dumpit = nl80211_dump_survey,
5708 },
5709 {
5710 .cmd = NL80211_CMD_SET_PMKSA,
5711 .doit = nl80211_setdel_pmksa,
5712 .policy = nl80211_policy,
5713 .flags = GENL_ADMIN_PERM,
5714 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5715 NL80211_FLAG_NEED_RTNL,
5716 },
5717 {
5718 .cmd = NL80211_CMD_DEL_PMKSA,
5719 .doit = nl80211_setdel_pmksa,
5720 .policy = nl80211_policy,
5721 .flags = GENL_ADMIN_PERM,
5722 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5723 NL80211_FLAG_NEED_RTNL,
5724 },
5725 {
5726 .cmd = NL80211_CMD_FLUSH_PMKSA,
5727 .doit = nl80211_flush_pmksa,
5728 .policy = nl80211_policy,
5729 .flags = GENL_ADMIN_PERM,
5730 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5731 NL80211_FLAG_NEED_RTNL,
5732 },
5733 {
5734 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5735 .doit = nl80211_remain_on_channel,
5736 .policy = nl80211_policy,
5737 .flags = GENL_ADMIN_PERM,
5738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5739 NL80211_FLAG_NEED_RTNL,
5740 },
5741 {
5742 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5743 .doit = nl80211_cancel_remain_on_channel,
5744 .policy = nl80211_policy,
5745 .flags = GENL_ADMIN_PERM,
5746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5747 NL80211_FLAG_NEED_RTNL,
5748 },
5749 {
5750 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5751 .doit = nl80211_set_tx_bitrate_mask,
5752 .policy = nl80211_policy,
5753 .flags = GENL_ADMIN_PERM,
5754 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5755 NL80211_FLAG_NEED_RTNL,
5756 },
5757 {
5758 .cmd = NL80211_CMD_REGISTER_FRAME,
5759 .doit = nl80211_register_mgmt,
5760 .policy = nl80211_policy,
5761 .flags = GENL_ADMIN_PERM,
5762 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5763 NL80211_FLAG_NEED_RTNL,
5764 },
5765 {
5766 .cmd = NL80211_CMD_FRAME,
5767 .doit = nl80211_tx_mgmt,
5768 .policy = nl80211_policy,
5769 .flags = GENL_ADMIN_PERM,
5770 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5771 NL80211_FLAG_NEED_RTNL,
5772 },
5773 {
5774 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5775 .doit = nl80211_tx_mgmt_cancel_wait,
5776 .policy = nl80211_policy,
5777 .flags = GENL_ADMIN_PERM,
5778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5779 NL80211_FLAG_NEED_RTNL,
5780 },
5781 {
5782 .cmd = NL80211_CMD_SET_POWER_SAVE,
5783 .doit = nl80211_set_power_save,
5784 .policy = nl80211_policy,
5785 .flags = GENL_ADMIN_PERM,
5786 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5787 NL80211_FLAG_NEED_RTNL,
5788 },
5789 {
5790 .cmd = NL80211_CMD_GET_POWER_SAVE,
5791 .doit = nl80211_get_power_save,
5792 .policy = nl80211_policy,
5793 /* can be retrieved by unprivileged users */
5794 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5795 NL80211_FLAG_NEED_RTNL,
5796 },
5797 {
5798 .cmd = NL80211_CMD_SET_CQM,
5799 .doit = nl80211_set_cqm,
5800 .policy = nl80211_policy,
5801 .flags = GENL_ADMIN_PERM,
5802 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5803 NL80211_FLAG_NEED_RTNL,
5804 },
5805 {
5806 .cmd = NL80211_CMD_SET_CHANNEL,
5807 .doit = nl80211_set_channel,
5808 .policy = nl80211_policy,
5809 .flags = GENL_ADMIN_PERM,
5810 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5811 NL80211_FLAG_NEED_RTNL,
5812 },
5813 {
5814 .cmd = NL80211_CMD_SET_WDS_PEER,
5815 .doit = nl80211_set_wds_peer,
5816 .policy = nl80211_policy,
5817 .flags = GENL_ADMIN_PERM,
5818 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5819 NL80211_FLAG_NEED_RTNL,
5820 },
5821 {
5822 .cmd = NL80211_CMD_JOIN_MESH,
5823 .doit = nl80211_join_mesh,
5824 .policy = nl80211_policy,
5825 .flags = GENL_ADMIN_PERM,
5826 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5827 NL80211_FLAG_NEED_RTNL,
5828 },
5829 {
5830 .cmd = NL80211_CMD_LEAVE_MESH,
5831 .doit = nl80211_leave_mesh,
5832 .policy = nl80211_policy,
5833 .flags = GENL_ADMIN_PERM,
5834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5835 NL80211_FLAG_NEED_RTNL,
5836 },
5837 {
5838 .cmd = NL80211_CMD_GET_WOWLAN,
5839 .doit = nl80211_get_wowlan,
5840 .policy = nl80211_policy,
5841 /* can be retrieved by unprivileged users */
5842 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5843 NL80211_FLAG_NEED_RTNL,
5844 },
5845 {
5846 .cmd = NL80211_CMD_SET_WOWLAN,
5847 .doit = nl80211_set_wowlan,
5848 .policy = nl80211_policy,
5849 .flags = GENL_ADMIN_PERM,
5850 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5851 NL80211_FLAG_NEED_RTNL,
5852 },
5853 };
5854
5855 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5856 .name = "mlme",
5857 };
5858
5859 /* multicast groups */
5860 static struct genl_multicast_group nl80211_config_mcgrp = {
5861 .name = "config",
5862 };
5863 static struct genl_multicast_group nl80211_scan_mcgrp = {
5864 .name = "scan",
5865 };
5866 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5867 .name = "regulatory",
5868 };
5869
5870 /* notification functions */
5871
5872 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5873 {
5874 struct sk_buff *msg;
5875
5876 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5877 if (!msg)
5878 return;
5879
5880 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5881 nlmsg_free(msg);
5882 return;
5883 }
5884
5885 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5886 nl80211_config_mcgrp.id, GFP_KERNEL);
5887 }
5888
5889 static int nl80211_add_scan_req(struct sk_buff *msg,
5890 struct cfg80211_registered_device *rdev)
5891 {
5892 struct cfg80211_scan_request *req = rdev->scan_req;
5893 struct nlattr *nest;
5894 int i;
5895
5896 ASSERT_RDEV_LOCK(rdev);
5897
5898 if (WARN_ON(!req))
5899 return 0;
5900
5901 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5902 if (!nest)
5903 goto nla_put_failure;
5904 for (i = 0; i < req->n_ssids; i++)
5905 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5906 nla_nest_end(msg, nest);
5907
5908 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5909 if (!nest)
5910 goto nla_put_failure;
5911 for (i = 0; i < req->n_channels; i++)
5912 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5913 nla_nest_end(msg, nest);
5914
5915 if (req->ie)
5916 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5917
5918 return 0;
5919 nla_put_failure:
5920 return -ENOBUFS;
5921 }
5922
5923 static int nl80211_send_scan_msg(struct sk_buff *msg,
5924 struct cfg80211_registered_device *rdev,
5925 struct net_device *netdev,
5926 u32 pid, u32 seq, int flags,
5927 u32 cmd)
5928 {
5929 void *hdr;
5930
5931 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5932 if (!hdr)
5933 return -1;
5934
5935 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5936 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5937
5938 /* ignore errors and send incomplete event anyway */
5939 nl80211_add_scan_req(msg, rdev);
5940
5941 return genlmsg_end(msg, hdr);
5942
5943 nla_put_failure:
5944 genlmsg_cancel(msg, hdr);
5945 return -EMSGSIZE;
5946 }
5947
5948 static int
5949 nl80211_send_sched_scan_msg(struct sk_buff *msg,
5950 struct cfg80211_registered_device *rdev,
5951 struct net_device *netdev,
5952 u32 pid, u32 seq, int flags, u32 cmd)
5953 {
5954 void *hdr;
5955
5956 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5957 if (!hdr)
5958 return -1;
5959
5960 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5961 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5962
5963 return genlmsg_end(msg, hdr);
5964
5965 nla_put_failure:
5966 genlmsg_cancel(msg, hdr);
5967 return -EMSGSIZE;
5968 }
5969
5970 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5971 struct net_device *netdev)
5972 {
5973 struct sk_buff *msg;
5974
5975 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5976 if (!msg)
5977 return;
5978
5979 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5980 NL80211_CMD_TRIGGER_SCAN) < 0) {
5981 nlmsg_free(msg);
5982 return;
5983 }
5984
5985 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5986 nl80211_scan_mcgrp.id, GFP_KERNEL);
5987 }
5988
5989 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5990 struct net_device *netdev)
5991 {
5992 struct sk_buff *msg;
5993
5994 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5995 if (!msg)
5996 return;
5997
5998 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5999 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6000 nlmsg_free(msg);
6001 return;
6002 }
6003
6004 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6005 nl80211_scan_mcgrp.id, GFP_KERNEL);
6006 }
6007
6008 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6009 struct net_device *netdev)
6010 {
6011 struct sk_buff *msg;
6012
6013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6014 if (!msg)
6015 return;
6016
6017 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6018 NL80211_CMD_SCAN_ABORTED) < 0) {
6019 nlmsg_free(msg);
6020 return;
6021 }
6022
6023 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6024 nl80211_scan_mcgrp.id, GFP_KERNEL);
6025 }
6026
6027 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6028 struct net_device *netdev)
6029 {
6030 struct sk_buff *msg;
6031
6032 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6033 if (!msg)
6034 return;
6035
6036 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6037 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6038 nlmsg_free(msg);
6039 return;
6040 }
6041
6042 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6043 nl80211_scan_mcgrp.id, GFP_KERNEL);
6044 }
6045
6046 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6047 struct net_device *netdev, u32 cmd)
6048 {
6049 struct sk_buff *msg;
6050
6051 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6052 if (!msg)
6053 return;
6054
6055 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6056 nlmsg_free(msg);
6057 return;
6058 }
6059
6060 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6061 nl80211_scan_mcgrp.id, GFP_KERNEL);
6062 }
6063
6064 /*
6065 * This can happen on global regulatory changes or device specific settings
6066 * based on custom world regulatory domains.
6067 */
6068 void nl80211_send_reg_change_event(struct regulatory_request *request)
6069 {
6070 struct sk_buff *msg;
6071 void *hdr;
6072
6073 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6074 if (!msg)
6075 return;
6076
6077 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6078 if (!hdr) {
6079 nlmsg_free(msg);
6080 return;
6081 }
6082
6083 /* Userspace can always count this one always being set */
6084 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6085
6086 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6087 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6088 NL80211_REGDOM_TYPE_WORLD);
6089 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6090 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6091 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6092 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6093 request->intersect)
6094 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6095 NL80211_REGDOM_TYPE_INTERSECTION);
6096 else {
6097 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6098 NL80211_REGDOM_TYPE_COUNTRY);
6099 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6100 }
6101
6102 if (wiphy_idx_valid(request->wiphy_idx))
6103 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6104
6105 if (genlmsg_end(msg, hdr) < 0) {
6106 nlmsg_free(msg);
6107 return;
6108 }
6109
6110 rcu_read_lock();
6111 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6112 GFP_ATOMIC);
6113 rcu_read_unlock();
6114
6115 return;
6116
6117 nla_put_failure:
6118 genlmsg_cancel(msg, hdr);
6119 nlmsg_free(msg);
6120 }
6121
6122 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6123 struct net_device *netdev,
6124 const u8 *buf, size_t len,
6125 enum nl80211_commands cmd, gfp_t gfp)
6126 {
6127 struct sk_buff *msg;
6128 void *hdr;
6129
6130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6131 if (!msg)
6132 return;
6133
6134 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6135 if (!hdr) {
6136 nlmsg_free(msg);
6137 return;
6138 }
6139
6140 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6141 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6142 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6143
6144 if (genlmsg_end(msg, hdr) < 0) {
6145 nlmsg_free(msg);
6146 return;
6147 }
6148
6149 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6150 nl80211_mlme_mcgrp.id, gfp);
6151 return;
6152
6153 nla_put_failure:
6154 genlmsg_cancel(msg, hdr);
6155 nlmsg_free(msg);
6156 }
6157
6158 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6159 struct net_device *netdev, const u8 *buf,
6160 size_t len, gfp_t gfp)
6161 {
6162 nl80211_send_mlme_event(rdev, netdev, buf, len,
6163 NL80211_CMD_AUTHENTICATE, gfp);
6164 }
6165
6166 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6167 struct net_device *netdev, const u8 *buf,
6168 size_t len, gfp_t gfp)
6169 {
6170 nl80211_send_mlme_event(rdev, netdev, buf, len,
6171 NL80211_CMD_ASSOCIATE, gfp);
6172 }
6173
6174 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6175 struct net_device *netdev, const u8 *buf,
6176 size_t len, gfp_t gfp)
6177 {
6178 nl80211_send_mlme_event(rdev, netdev, buf, len,
6179 NL80211_CMD_DEAUTHENTICATE, gfp);
6180 }
6181
6182 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6183 struct net_device *netdev, const u8 *buf,
6184 size_t len, gfp_t gfp)
6185 {
6186 nl80211_send_mlme_event(rdev, netdev, buf, len,
6187 NL80211_CMD_DISASSOCIATE, gfp);
6188 }
6189
6190 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6191 struct net_device *netdev, const u8 *buf,
6192 size_t len, gfp_t gfp)
6193 {
6194 nl80211_send_mlme_event(rdev, netdev, buf, len,
6195 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6196 }
6197
6198 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6199 struct net_device *netdev, const u8 *buf,
6200 size_t len, gfp_t gfp)
6201 {
6202 nl80211_send_mlme_event(rdev, netdev, buf, len,
6203 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6204 }
6205
6206 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6207 struct net_device *netdev, int cmd,
6208 const u8 *addr, gfp_t gfp)
6209 {
6210 struct sk_buff *msg;
6211 void *hdr;
6212
6213 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6214 if (!msg)
6215 return;
6216
6217 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6218 if (!hdr) {
6219 nlmsg_free(msg);
6220 return;
6221 }
6222
6223 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6224 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6225 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6226 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6227
6228 if (genlmsg_end(msg, hdr) < 0) {
6229 nlmsg_free(msg);
6230 return;
6231 }
6232
6233 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6234 nl80211_mlme_mcgrp.id, gfp);
6235 return;
6236
6237 nla_put_failure:
6238 genlmsg_cancel(msg, hdr);
6239 nlmsg_free(msg);
6240 }
6241
6242 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6243 struct net_device *netdev, const u8 *addr,
6244 gfp_t gfp)
6245 {
6246 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6247 addr, gfp);
6248 }
6249
6250 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6251 struct net_device *netdev, const u8 *addr,
6252 gfp_t gfp)
6253 {
6254 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6255 addr, gfp);
6256 }
6257
6258 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6259 struct net_device *netdev, const u8 *bssid,
6260 const u8 *req_ie, size_t req_ie_len,
6261 const u8 *resp_ie, size_t resp_ie_len,
6262 u16 status, gfp_t gfp)
6263 {
6264 struct sk_buff *msg;
6265 void *hdr;
6266
6267 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6268 if (!msg)
6269 return;
6270
6271 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6272 if (!hdr) {
6273 nlmsg_free(msg);
6274 return;
6275 }
6276
6277 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6278 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6279 if (bssid)
6280 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6281 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6282 if (req_ie)
6283 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6284 if (resp_ie)
6285 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6286
6287 if (genlmsg_end(msg, hdr) < 0) {
6288 nlmsg_free(msg);
6289 return;
6290 }
6291
6292 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6293 nl80211_mlme_mcgrp.id, gfp);
6294 return;
6295
6296 nla_put_failure:
6297 genlmsg_cancel(msg, hdr);
6298 nlmsg_free(msg);
6299
6300 }
6301
6302 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6303 struct net_device *netdev, const u8 *bssid,
6304 const u8 *req_ie, size_t req_ie_len,
6305 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6306 {
6307 struct sk_buff *msg;
6308 void *hdr;
6309
6310 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6311 if (!msg)
6312 return;
6313
6314 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6315 if (!hdr) {
6316 nlmsg_free(msg);
6317 return;
6318 }
6319
6320 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6321 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6322 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6323 if (req_ie)
6324 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6325 if (resp_ie)
6326 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6327
6328 if (genlmsg_end(msg, hdr) < 0) {
6329 nlmsg_free(msg);
6330 return;
6331 }
6332
6333 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6334 nl80211_mlme_mcgrp.id, gfp);
6335 return;
6336
6337 nla_put_failure:
6338 genlmsg_cancel(msg, hdr);
6339 nlmsg_free(msg);
6340
6341 }
6342
6343 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6344 struct net_device *netdev, u16 reason,
6345 const u8 *ie, size_t ie_len, bool from_ap)
6346 {
6347 struct sk_buff *msg;
6348 void *hdr;
6349
6350 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6351 if (!msg)
6352 return;
6353
6354 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6355 if (!hdr) {
6356 nlmsg_free(msg);
6357 return;
6358 }
6359
6360 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6361 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6362 if (from_ap && reason)
6363 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6364 if (from_ap)
6365 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6366 if (ie)
6367 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6368
6369 if (genlmsg_end(msg, hdr) < 0) {
6370 nlmsg_free(msg);
6371 return;
6372 }
6373
6374 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6375 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6376 return;
6377
6378 nla_put_failure:
6379 genlmsg_cancel(msg, hdr);
6380 nlmsg_free(msg);
6381
6382 }
6383
6384 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6385 struct net_device *netdev, const u8 *bssid,
6386 gfp_t gfp)
6387 {
6388 struct sk_buff *msg;
6389 void *hdr;
6390
6391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6392 if (!msg)
6393 return;
6394
6395 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6396 if (!hdr) {
6397 nlmsg_free(msg);
6398 return;
6399 }
6400
6401 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6402 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6403 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6404
6405 if (genlmsg_end(msg, hdr) < 0) {
6406 nlmsg_free(msg);
6407 return;
6408 }
6409
6410 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6411 nl80211_mlme_mcgrp.id, gfp);
6412 return;
6413
6414 nla_put_failure:
6415 genlmsg_cancel(msg, hdr);
6416 nlmsg_free(msg);
6417 }
6418
6419 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6420 struct net_device *netdev,
6421 const u8 *macaddr, const u8* ie, u8 ie_len,
6422 gfp_t gfp)
6423 {
6424 struct sk_buff *msg;
6425 void *hdr;
6426
6427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6428 if (!msg)
6429 return;
6430
6431 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6432 if (!hdr) {
6433 nlmsg_free(msg);
6434 return;
6435 }
6436
6437 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6438 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6439 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6440 if (ie_len && ie)
6441 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6442
6443 if (genlmsg_end(msg, hdr) < 0) {
6444 nlmsg_free(msg);
6445 return;
6446 }
6447
6448 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6449 nl80211_mlme_mcgrp.id, gfp);
6450 return;
6451
6452 nla_put_failure:
6453 genlmsg_cancel(msg, hdr);
6454 nlmsg_free(msg);
6455 }
6456
6457 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6458 struct net_device *netdev, const u8 *addr,
6459 enum nl80211_key_type key_type, int key_id,
6460 const u8 *tsc, gfp_t gfp)
6461 {
6462 struct sk_buff *msg;
6463 void *hdr;
6464
6465 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6466 if (!msg)
6467 return;
6468
6469 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6470 if (!hdr) {
6471 nlmsg_free(msg);
6472 return;
6473 }
6474
6475 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6476 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6477 if (addr)
6478 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6479 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6480 if (key_id != -1)
6481 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6482 if (tsc)
6483 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6484
6485 if (genlmsg_end(msg, hdr) < 0) {
6486 nlmsg_free(msg);
6487 return;
6488 }
6489
6490 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6491 nl80211_mlme_mcgrp.id, gfp);
6492 return;
6493
6494 nla_put_failure:
6495 genlmsg_cancel(msg, hdr);
6496 nlmsg_free(msg);
6497 }
6498
6499 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6500 struct ieee80211_channel *channel_before,
6501 struct ieee80211_channel *channel_after)
6502 {
6503 struct sk_buff *msg;
6504 void *hdr;
6505 struct nlattr *nl_freq;
6506
6507 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6508 if (!msg)
6509 return;
6510
6511 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6512 if (!hdr) {
6513 nlmsg_free(msg);
6514 return;
6515 }
6516
6517 /*
6518 * Since we are applying the beacon hint to a wiphy we know its
6519 * wiphy_idx is valid
6520 */
6521 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6522
6523 /* Before */
6524 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6525 if (!nl_freq)
6526 goto nla_put_failure;
6527 if (nl80211_msg_put_channel(msg, channel_before))
6528 goto nla_put_failure;
6529 nla_nest_end(msg, nl_freq);
6530
6531 /* After */
6532 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6533 if (!nl_freq)
6534 goto nla_put_failure;
6535 if (nl80211_msg_put_channel(msg, channel_after))
6536 goto nla_put_failure;
6537 nla_nest_end(msg, nl_freq);
6538
6539 if (genlmsg_end(msg, hdr) < 0) {
6540 nlmsg_free(msg);
6541 return;
6542 }
6543
6544 rcu_read_lock();
6545 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6546 GFP_ATOMIC);
6547 rcu_read_unlock();
6548
6549 return;
6550
6551 nla_put_failure:
6552 genlmsg_cancel(msg, hdr);
6553 nlmsg_free(msg);
6554 }
6555
6556 static void nl80211_send_remain_on_chan_event(
6557 int cmd, struct cfg80211_registered_device *rdev,
6558 struct net_device *netdev, u64 cookie,
6559 struct ieee80211_channel *chan,
6560 enum nl80211_channel_type channel_type,
6561 unsigned int duration, gfp_t gfp)
6562 {
6563 struct sk_buff *msg;
6564 void *hdr;
6565
6566 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6567 if (!msg)
6568 return;
6569
6570 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6571 if (!hdr) {
6572 nlmsg_free(msg);
6573 return;
6574 }
6575
6576 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6577 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6578 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6579 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6580 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6581
6582 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6583 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6584
6585 if (genlmsg_end(msg, hdr) < 0) {
6586 nlmsg_free(msg);
6587 return;
6588 }
6589
6590 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6591 nl80211_mlme_mcgrp.id, gfp);
6592 return;
6593
6594 nla_put_failure:
6595 genlmsg_cancel(msg, hdr);
6596 nlmsg_free(msg);
6597 }
6598
6599 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6600 struct net_device *netdev, u64 cookie,
6601 struct ieee80211_channel *chan,
6602 enum nl80211_channel_type channel_type,
6603 unsigned int duration, gfp_t gfp)
6604 {
6605 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6606 rdev, netdev, cookie, chan,
6607 channel_type, duration, gfp);
6608 }
6609
6610 void nl80211_send_remain_on_channel_cancel(
6611 struct cfg80211_registered_device *rdev, struct net_device *netdev,
6612 u64 cookie, struct ieee80211_channel *chan,
6613 enum nl80211_channel_type channel_type, gfp_t gfp)
6614 {
6615 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6616 rdev, netdev, cookie, chan,
6617 channel_type, 0, gfp);
6618 }
6619
6620 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6621 struct net_device *dev, const u8 *mac_addr,
6622 struct station_info *sinfo, gfp_t gfp)
6623 {
6624 struct sk_buff *msg;
6625
6626 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6627 if (!msg)
6628 return;
6629
6630 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6631 nlmsg_free(msg);
6632 return;
6633 }
6634
6635 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6636 nl80211_mlme_mcgrp.id, gfp);
6637 }
6638
6639 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
6640 struct net_device *dev, const u8 *mac_addr,
6641 gfp_t gfp)
6642 {
6643 struct sk_buff *msg;
6644 void *hdr;
6645
6646 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6647 if (!msg)
6648 return;
6649
6650 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
6651 if (!hdr) {
6652 nlmsg_free(msg);
6653 return;
6654 }
6655
6656 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
6657 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
6658
6659 if (genlmsg_end(msg, hdr) < 0) {
6660 nlmsg_free(msg);
6661 return;
6662 }
6663
6664 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6665 nl80211_mlme_mcgrp.id, gfp);
6666 return;
6667
6668 nla_put_failure:
6669 genlmsg_cancel(msg, hdr);
6670 nlmsg_free(msg);
6671 }
6672
6673 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
6674 struct net_device *netdev, u32 nlpid,
6675 int freq, const u8 *buf, size_t len, gfp_t gfp)
6676 {
6677 struct sk_buff *msg;
6678 void *hdr;
6679 int err;
6680
6681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6682 if (!msg)
6683 return -ENOMEM;
6684
6685 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
6686 if (!hdr) {
6687 nlmsg_free(msg);
6688 return -ENOMEM;
6689 }
6690
6691 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6692 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6693 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6694 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6695
6696 err = genlmsg_end(msg, hdr);
6697 if (err < 0) {
6698 nlmsg_free(msg);
6699 return err;
6700 }
6701
6702 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
6703 if (err < 0)
6704 return err;
6705 return 0;
6706
6707 nla_put_failure:
6708 genlmsg_cancel(msg, hdr);
6709 nlmsg_free(msg);
6710 return -ENOBUFS;
6711 }
6712
6713 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6714 struct net_device *netdev, u64 cookie,
6715 const u8 *buf, size_t len, bool ack,
6716 gfp_t gfp)
6717 {
6718 struct sk_buff *msg;
6719 void *hdr;
6720
6721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6722 if (!msg)
6723 return;
6724
6725 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6726 if (!hdr) {
6727 nlmsg_free(msg);
6728 return;
6729 }
6730
6731 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6732 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6733 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6734 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6735 if (ack)
6736 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6737
6738 if (genlmsg_end(msg, hdr) < 0) {
6739 nlmsg_free(msg);
6740 return;
6741 }
6742
6743 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6744 return;
6745
6746 nla_put_failure:
6747 genlmsg_cancel(msg, hdr);
6748 nlmsg_free(msg);
6749 }
6750
6751 void
6752 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6753 struct net_device *netdev,
6754 enum nl80211_cqm_rssi_threshold_event rssi_event,
6755 gfp_t gfp)
6756 {
6757 struct sk_buff *msg;
6758 struct nlattr *pinfoattr;
6759 void *hdr;
6760
6761 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6762 if (!msg)
6763 return;
6764
6765 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6766 if (!hdr) {
6767 nlmsg_free(msg);
6768 return;
6769 }
6770
6771 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6772 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6773
6774 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6775 if (!pinfoattr)
6776 goto nla_put_failure;
6777
6778 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6779 rssi_event);
6780
6781 nla_nest_end(msg, pinfoattr);
6782
6783 if (genlmsg_end(msg, hdr) < 0) {
6784 nlmsg_free(msg);
6785 return;
6786 }
6787
6788 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6789 nl80211_mlme_mcgrp.id, gfp);
6790 return;
6791
6792 nla_put_failure:
6793 genlmsg_cancel(msg, hdr);
6794 nlmsg_free(msg);
6795 }
6796
6797 void
6798 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6799 struct net_device *netdev, const u8 *peer,
6800 u32 num_packets, gfp_t gfp)
6801 {
6802 struct sk_buff *msg;
6803 struct nlattr *pinfoattr;
6804 void *hdr;
6805
6806 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6807 if (!msg)
6808 return;
6809
6810 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6811 if (!hdr) {
6812 nlmsg_free(msg);
6813 return;
6814 }
6815
6816 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6817 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6818 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6819
6820 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6821 if (!pinfoattr)
6822 goto nla_put_failure;
6823
6824 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6825
6826 nla_nest_end(msg, pinfoattr);
6827
6828 if (genlmsg_end(msg, hdr) < 0) {
6829 nlmsg_free(msg);
6830 return;
6831 }
6832
6833 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6834 nl80211_mlme_mcgrp.id, gfp);
6835 return;
6836
6837 nla_put_failure:
6838 genlmsg_cancel(msg, hdr);
6839 nlmsg_free(msg);
6840 }
6841
6842 static int nl80211_netlink_notify(struct notifier_block * nb,
6843 unsigned long state,
6844 void *_notify)
6845 {
6846 struct netlink_notify *notify = _notify;
6847 struct cfg80211_registered_device *rdev;
6848 struct wireless_dev *wdev;
6849
6850 if (state != NETLINK_URELEASE)
6851 return NOTIFY_DONE;
6852
6853 rcu_read_lock();
6854
6855 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6856 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6857 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6858
6859 rcu_read_unlock();
6860
6861 return NOTIFY_DONE;
6862 }
6863
6864 static struct notifier_block nl80211_netlink_notifier = {
6865 .notifier_call = nl80211_netlink_notify,
6866 };
6867
6868 /* initialisation/exit functions */
6869
6870 int nl80211_init(void)
6871 {
6872 int err;
6873
6874 err = genl_register_family_with_ops(&nl80211_fam,
6875 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6876 if (err)
6877 return err;
6878
6879 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6880 if (err)
6881 goto err_out;
6882
6883 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6884 if (err)
6885 goto err_out;
6886
6887 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6888 if (err)
6889 goto err_out;
6890
6891 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6892 if (err)
6893 goto err_out;
6894
6895 #ifdef CONFIG_NL80211_TESTMODE
6896 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6897 if (err)
6898 goto err_out;
6899 #endif
6900
6901 err = netlink_register_notifier(&nl80211_netlink_notifier);
6902 if (err)
6903 goto err_out;
6904
6905 return 0;
6906 err_out:
6907 genl_unregister_family(&nl80211_fam);
6908 return err;
6909 }
6910
6911 void nl80211_exit(void)
6912 {
6913 netlink_unregister_notifier(&nl80211_netlink_notifier);
6914 genl_unregister_family(&nl80211_fam);
6915 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree