?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
cfg80211: advertise possible interface combinations
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blobbeac296b1fde49b725235b63ae6e21c45b6727e7
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
27 struct genl_info *info);
28 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
29 struct genl_info *info);
30
31 /* the netlink family */
32 static struct genl_family nl80211_fam = {
33 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
34 .name = "nl80211", /* have users key off the name instead */
35 .hdrsize = 0, /* no private header */
36 .version = 1, /* no particular meaning now */
37 .maxattr = NL80211_ATTR_MAX,
38 .netnsok = true,
39 .pre_doit = nl80211_pre_doit,
40 .post_doit = nl80211_post_doit,
41 };
42
43 /* internal helper: get rdev and dev */
44 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
45 struct cfg80211_registered_device **rdev,
46 struct net_device **dev)
47 {
48 struct nlattr **attrs = info->attrs;
49 int ifindex;
50
51 if (!attrs[NL80211_ATTR_IFINDEX])
52 return -EINVAL;
53
54 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
55 *dev = dev_get_by_index(genl_info_net(info), ifindex);
56 if (!*dev)
57 return -ENODEV;
58
59 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
60 if (IS_ERR(*rdev)) {
61 dev_put(*dev);
62 return PTR_ERR(*rdev);
63 }
64
65 return 0;
66 }
67
68 /* policy for the attributes */
69 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
70 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
72 .len = 20-1 },
73 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
74 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
75 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
77 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
78 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
79 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
81
82 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
83 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
84 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
85
86 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
87 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
88
89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
91 .len = WLAN_MAX_KEY_LEN },
92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
97
98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
101 .len = IEEE80211_MAX_DATA_LEN },
102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_DATA_LEN },
104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
108 .len = NL80211_MAX_SUPP_RATES },
109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
113 .len = IEEE80211_MAX_MESH_ID_LEN },
114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
115
116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
118
119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
123 .len = NL80211_MAX_SUPP_RATES },
124 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
125
126 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
127 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
128
129 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
130 .len = NL80211_HT_CAPABILITY_LEN },
131
132 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
133 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
134 .len = IEEE80211_MAX_DATA_LEN },
135 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
136 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
137
138 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
139 .len = IEEE80211_MAX_SSID_LEN },
140 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
141 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
142 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
143 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
144 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
145 [NL80211_ATTR_STA_FLAGS2] = {
146 .len = sizeof(struct nl80211_sta_flag_update),
147 },
148 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
149 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
150 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
151 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
152 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
153 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
154 [NL80211_ATTR_PID] = { .type = NLA_U32 },
155 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
156 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
157 .len = WLAN_PMKID_LEN },
158 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
159 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
160 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
161 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
162 .len = IEEE80211_MAX_DATA_LEN },
163 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
164 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
165 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
166 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
167 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
168 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
169 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
170 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
171 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
172 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
173 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
174 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
175 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
176 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
177 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
178 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
179 };
180
181 /* policy for the key attributes */
182 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
183 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
184 [NL80211_KEY_IDX] = { .type = NLA_U8 },
185 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
186 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
187 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
188 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
189 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
190 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
191 };
192
193 /* policy for the key default flags */
194 static const struct nla_policy
195 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
196 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
197 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
198 };
199
200 /* policy for WoWLAN attributes */
201 static const struct nla_policy
202 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
203 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
204 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
205 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
206 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
207 };
208
209 /* ifidx get helper */
210 static int nl80211_get_ifidx(struct netlink_callback *cb)
211 {
212 int res;
213
214 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
215 nl80211_fam.attrbuf, nl80211_fam.maxattr,
216 nl80211_policy);
217 if (res)
218 return res;
219
220 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
221 return -EINVAL;
222
223 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
224 if (!res)
225 return -EINVAL;
226 return res;
227 }
228
229 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
230 struct netlink_callback *cb,
231 struct cfg80211_registered_device **rdev,
232 struct net_device **dev)
233 {
234 int ifidx = cb->args[0];
235 int err;
236
237 if (!ifidx)
238 ifidx = nl80211_get_ifidx(cb);
239 if (ifidx < 0)
240 return ifidx;
241
242 cb->args[0] = ifidx;
243
244 rtnl_lock();
245
246 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
247 if (!*dev) {
248 err = -ENODEV;
249 goto out_rtnl;
250 }
251
252 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
253 if (IS_ERR(*rdev)) {
254 err = PTR_ERR(*rdev);
255 goto out_rtnl;
256 }
257
258 return 0;
259 out_rtnl:
260 rtnl_unlock();
261 return err;
262 }
263
264 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
265 {
266 cfg80211_unlock_rdev(rdev);
267 rtnl_unlock();
268 }
269
270 /* IE validation */
271 static bool is_valid_ie_attr(const struct nlattr *attr)
272 {
273 const u8 *pos;
274 int len;
275
276 if (!attr)
277 return true;
278
279 pos = nla_data(attr);
280 len = nla_len(attr);
281
282 while (len) {
283 u8 elemlen;
284
285 if (len < 2)
286 return false;
287 len -= 2;
288
289 elemlen = pos[1];
290 if (elemlen > len)
291 return false;
292
293 len -= elemlen;
294 pos += 2 + elemlen;
295 }
296
297 return true;
298 }
299
300 /* message building helper */
301 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
302 int flags, u8 cmd)
303 {
304 /* since there is no private header just add the generic one */
305 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
306 }
307
308 static int nl80211_msg_put_channel(struct sk_buff *msg,
309 struct ieee80211_channel *chan)
310 {
311 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
312 chan->center_freq);
313
314 if (chan->flags & IEEE80211_CHAN_DISABLED)
315 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
316 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
317 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
318 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
319 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
320 if (chan->flags & IEEE80211_CHAN_RADAR)
321 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
322
323 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
324 DBM_TO_MBM(chan->max_power));
325
326 return 0;
327
328 nla_put_failure:
329 return -ENOBUFS;
330 }
331
332 /* netlink command implementations */
333
334 struct key_parse {
335 struct key_params p;
336 int idx;
337 int type;
338 bool def, defmgmt;
339 bool def_uni, def_multi;
340 };
341
342 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
343 {
344 struct nlattr *tb[NL80211_KEY_MAX + 1];
345 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
346 nl80211_key_policy);
347 if (err)
348 return err;
349
350 k->def = !!tb[NL80211_KEY_DEFAULT];
351 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
352
353 if (k->def) {
354 k->def_uni = true;
355 k->def_multi = true;
356 }
357 if (k->defmgmt)
358 k->def_multi = true;
359
360 if (tb[NL80211_KEY_IDX])
361 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
362
363 if (tb[NL80211_KEY_DATA]) {
364 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
365 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
366 }
367
368 if (tb[NL80211_KEY_SEQ]) {
369 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
370 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
371 }
372
373 if (tb[NL80211_KEY_CIPHER])
374 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
375
376 if (tb[NL80211_KEY_TYPE]) {
377 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
378 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
379 return -EINVAL;
380 }
381
382 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
383 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
384 int err = nla_parse_nested(kdt,
385 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
386 tb[NL80211_KEY_DEFAULT_TYPES],
387 nl80211_key_default_policy);
388 if (err)
389 return err;
390
391 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
392 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
393 }
394
395 return 0;
396 }
397
398 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
399 {
400 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
401 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
402 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
403 }
404
405 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
406 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
407 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
408 }
409
410 if (info->attrs[NL80211_ATTR_KEY_IDX])
411 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
412
413 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
414 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
415
416 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
417 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
418
419 if (k->def) {
420 k->def_uni = true;
421 k->def_multi = true;
422 }
423 if (k->defmgmt)
424 k->def_multi = true;
425
426 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
427 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
428 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
429 return -EINVAL;
430 }
431
432 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
433 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
434 int err = nla_parse_nested(
435 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
436 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
437 nl80211_key_default_policy);
438 if (err)
439 return err;
440
441 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
442 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
443 }
444
445 return 0;
446 }
447
448 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
449 {
450 int err;
451
452 memset(k, 0, sizeof(*k));
453 k->idx = -1;
454 k->type = -1;
455
456 if (info->attrs[NL80211_ATTR_KEY])
457 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
458 else
459 err = nl80211_parse_key_old(info, k);
460
461 if (err)
462 return err;
463
464 if (k->def && k->defmgmt)
465 return -EINVAL;
466
467 if (k->defmgmt) {
468 if (k->def_uni || !k->def_multi)
469 return -EINVAL;
470 }
471
472 if (k->idx != -1) {
473 if (k->defmgmt) {
474 if (k->idx < 4 || k->idx > 5)
475 return -EINVAL;
476 } else if (k->def) {
477 if (k->idx < 0 || k->idx > 3)
478 return -EINVAL;
479 } else {
480 if (k->idx < 0 || k->idx > 5)
481 return -EINVAL;
482 }
483 }
484
485 return 0;
486 }
487
488 static struct cfg80211_cached_keys *
489 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
490 struct nlattr *keys)
491 {
492 struct key_parse parse;
493 struct nlattr *key;
494 struct cfg80211_cached_keys *result;
495 int rem, err, def = 0;
496
497 result = kzalloc(sizeof(*result), GFP_KERNEL);
498 if (!result)
499 return ERR_PTR(-ENOMEM);
500
501 result->def = -1;
502 result->defmgmt = -1;
503
504 nla_for_each_nested(key, keys, rem) {
505 memset(&parse, 0, sizeof(parse));
506 parse.idx = -1;
507
508 err = nl80211_parse_key_new(key, &parse);
509 if (err)
510 goto error;
511 err = -EINVAL;
512 if (!parse.p.key)
513 goto error;
514 if (parse.idx < 0 || parse.idx > 4)
515 goto error;
516 if (parse.def) {
517 if (def)
518 goto error;
519 def = 1;
520 result->def = parse.idx;
521 if (!parse.def_uni || !parse.def_multi)
522 goto error;
523 } else if (parse.defmgmt)
524 goto error;
525 err = cfg80211_validate_key_settings(rdev, &parse.p,
526 parse.idx, false, NULL);
527 if (err)
528 goto error;
529 result->params[parse.idx].cipher = parse.p.cipher;
530 result->params[parse.idx].key_len = parse.p.key_len;
531 result->params[parse.idx].key = result->data[parse.idx];
532 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
533 }
534
535 return result;
536 error:
537 kfree(result);
538 return ERR_PTR(err);
539 }
540
541 static int nl80211_key_allowed(struct wireless_dev *wdev)
542 {
543 ASSERT_WDEV_LOCK(wdev);
544
545 switch (wdev->iftype) {
546 case NL80211_IFTYPE_AP:
547 case NL80211_IFTYPE_AP_VLAN:
548 case NL80211_IFTYPE_P2P_GO:
549 case NL80211_IFTYPE_MESH_POINT:
550 break;
551 case NL80211_IFTYPE_ADHOC:
552 if (!wdev->current_bss)
553 return -ENOLINK;
554 break;
555 case NL80211_IFTYPE_STATION:
556 case NL80211_IFTYPE_P2P_CLIENT:
557 if (wdev->sme_state != CFG80211_SME_CONNECTED)
558 return -ENOLINK;
559 break;
560 default:
561 return -EINVAL;
562 }
563
564 return 0;
565 }
566
567 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
568 {
569 struct nlattr *nl_modes = nla_nest_start(msg, attr);
570 int i;
571
572 if (!nl_modes)
573 goto nla_put_failure;
574
575 i = 0;
576 while (ifmodes) {
577 if (ifmodes & 1)
578 NLA_PUT_FLAG(msg, i);
579 ifmodes >>= 1;
580 i++;
581 }
582
583 nla_nest_end(msg, nl_modes);
584 return 0;
585
586 nla_put_failure:
587 return -ENOBUFS;
588 }
589
590 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
591 struct sk_buff *msg)
592 {
593 struct nlattr *nl_combis;
594 int i, j;
595
596 nl_combis = nla_nest_start(msg,
597 NL80211_ATTR_INTERFACE_COMBINATIONS);
598 if (!nl_combis)
599 goto nla_put_failure;
600
601 for (i = 0; i < wiphy->n_iface_combinations; i++) {
602 const struct ieee80211_iface_combination *c;
603 struct nlattr *nl_combi, *nl_limits;
604
605 c = &wiphy->iface_combinations[i];
606
607 nl_combi = nla_nest_start(msg, i + 1);
608 if (!nl_combi)
609 goto nla_put_failure;
610
611 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
612 if (!nl_limits)
613 goto nla_put_failure;
614
615 for (j = 0; j < c->n_limits; j++) {
616 struct nlattr *nl_limit;
617
618 nl_limit = nla_nest_start(msg, j + 1);
619 if (!nl_limit)
620 goto nla_put_failure;
621 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
622 c->limits[j].max);
623 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
624 c->limits[j].types))
625 goto nla_put_failure;
626 nla_nest_end(msg, nl_limit);
627 }
628
629 nla_nest_end(msg, nl_limits);
630
631 if (c->beacon_int_infra_match)
632 NLA_PUT_FLAG(msg,
633 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
634 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
635 c->num_different_channels);
636 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
637 c->max_interfaces);
638
639 nla_nest_end(msg, nl_combi);
640 }
641
642 nla_nest_end(msg, nl_combis);
643
644 return 0;
645 nla_put_failure:
646 return -ENOBUFS;
647 }
648
649 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
650 struct cfg80211_registered_device *dev)
651 {
652 void *hdr;
653 struct nlattr *nl_bands, *nl_band;
654 struct nlattr *nl_freqs, *nl_freq;
655 struct nlattr *nl_rates, *nl_rate;
656 struct nlattr *nl_cmds;
657 enum ieee80211_band band;
658 struct ieee80211_channel *chan;
659 struct ieee80211_rate *rate;
660 int i;
661 const struct ieee80211_txrx_stypes *mgmt_stypes =
662 dev->wiphy.mgmt_stypes;
663
664 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
665 if (!hdr)
666 return -1;
667
668 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
669 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
670
671 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
672 cfg80211_rdev_list_generation);
673
674 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
675 dev->wiphy.retry_short);
676 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
677 dev->wiphy.retry_long);
678 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
679 dev->wiphy.frag_threshold);
680 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
681 dev->wiphy.rts_threshold);
682 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
683 dev->wiphy.coverage_class);
684 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
685 dev->wiphy.max_scan_ssids);
686 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
687 dev->wiphy.max_scan_ie_len);
688
689 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
690 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
691 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
692 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
693
694 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
695 sizeof(u32) * dev->wiphy.n_cipher_suites,
696 dev->wiphy.cipher_suites);
697
698 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
699 dev->wiphy.max_num_pmkids);
700
701 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
702 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
703
704 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
705 dev->wiphy.available_antennas_tx);
706 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
707 dev->wiphy.available_antennas_rx);
708
709 if ((dev->wiphy.available_antennas_tx ||
710 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
711 u32 tx_ant = 0, rx_ant = 0;
712 int res;
713 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
714 if (!res) {
715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
716 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
717 }
718 }
719
720 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
721 dev->wiphy.interface_modes))
722 goto nla_put_failure;
723
724 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
725 if (!nl_bands)
726 goto nla_put_failure;
727
728 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
729 if (!dev->wiphy.bands[band])
730 continue;
731
732 nl_band = nla_nest_start(msg, band);
733 if (!nl_band)
734 goto nla_put_failure;
735
736 /* add HT info */
737 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
738 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
739 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
740 &dev->wiphy.bands[band]->ht_cap.mcs);
741 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
742 dev->wiphy.bands[band]->ht_cap.cap);
743 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
744 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
745 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
746 dev->wiphy.bands[band]->ht_cap.ampdu_density);
747 }
748
749 /* add frequencies */
750 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
751 if (!nl_freqs)
752 goto nla_put_failure;
753
754 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
755 nl_freq = nla_nest_start(msg, i);
756 if (!nl_freq)
757 goto nla_put_failure;
758
759 chan = &dev->wiphy.bands[band]->channels[i];
760
761 if (nl80211_msg_put_channel(msg, chan))
762 goto nla_put_failure;
763
764 nla_nest_end(msg, nl_freq);
765 }
766
767 nla_nest_end(msg, nl_freqs);
768
769 /* add bitrates */
770 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
771 if (!nl_rates)
772 goto nla_put_failure;
773
774 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
775 nl_rate = nla_nest_start(msg, i);
776 if (!nl_rate)
777 goto nla_put_failure;
778
779 rate = &dev->wiphy.bands[band]->bitrates[i];
780 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
781 rate->bitrate);
782 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
783 NLA_PUT_FLAG(msg,
784 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
785
786 nla_nest_end(msg, nl_rate);
787 }
788
789 nla_nest_end(msg, nl_rates);
790
791 nla_nest_end(msg, nl_band);
792 }
793 nla_nest_end(msg, nl_bands);
794
795 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
796 if (!nl_cmds)
797 goto nla_put_failure;
798
799 i = 0;
800 #define CMD(op, n) \
801 do { \
802 if (dev->ops->op) { \
803 i++; \
804 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
805 } \
806 } while (0)
807
808 CMD(add_virtual_intf, NEW_INTERFACE);
809 CMD(change_virtual_intf, SET_INTERFACE);
810 CMD(add_key, NEW_KEY);
811 CMD(add_beacon, NEW_BEACON);
812 CMD(add_station, NEW_STATION);
813 CMD(add_mpath, NEW_MPATH);
814 CMD(update_mesh_config, SET_MESH_CONFIG);
815 CMD(change_bss, SET_BSS);
816 CMD(auth, AUTHENTICATE);
817 CMD(assoc, ASSOCIATE);
818 CMD(deauth, DEAUTHENTICATE);
819 CMD(disassoc, DISASSOCIATE);
820 CMD(join_ibss, JOIN_IBSS);
821 CMD(join_mesh, JOIN_MESH);
822 CMD(set_pmksa, SET_PMKSA);
823 CMD(del_pmksa, DEL_PMKSA);
824 CMD(flush_pmksa, FLUSH_PMKSA);
825 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
826 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
827 CMD(mgmt_tx, FRAME);
828 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
829 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
830 i++;
831 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
832 }
833 CMD(set_channel, SET_CHANNEL);
834 CMD(set_wds_peer, SET_WDS_PEER);
835 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
836 CMD(sched_scan_start, START_SCHED_SCAN);
837
838 #undef CMD
839
840 if (dev->ops->connect || dev->ops->auth) {
841 i++;
842 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
843 }
844
845 if (dev->ops->disconnect || dev->ops->deauth) {
846 i++;
847 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
848 }
849
850 nla_nest_end(msg, nl_cmds);
851
852 if (dev->ops->remain_on_channel)
853 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
854 dev->wiphy.max_remain_on_channel_duration);
855
856 /* for now at least assume all drivers have it */
857 if (dev->ops->mgmt_tx)
858 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
859
860 if (mgmt_stypes) {
861 u16 stypes;
862 struct nlattr *nl_ftypes, *nl_ifs;
863 enum nl80211_iftype ift;
864
865 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
866 if (!nl_ifs)
867 goto nla_put_failure;
868
869 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
870 nl_ftypes = nla_nest_start(msg, ift);
871 if (!nl_ftypes)
872 goto nla_put_failure;
873 i = 0;
874 stypes = mgmt_stypes[ift].tx;
875 while (stypes) {
876 if (stypes & 1)
877 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
878 (i << 4) | IEEE80211_FTYPE_MGMT);
879 stypes >>= 1;
880 i++;
881 }
882 nla_nest_end(msg, nl_ftypes);
883 }
884
885 nla_nest_end(msg, nl_ifs);
886
887 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
888 if (!nl_ifs)
889 goto nla_put_failure;
890
891 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
892 nl_ftypes = nla_nest_start(msg, ift);
893 if (!nl_ftypes)
894 goto nla_put_failure;
895 i = 0;
896 stypes = mgmt_stypes[ift].rx;
897 while (stypes) {
898 if (stypes & 1)
899 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
900 (i << 4) | IEEE80211_FTYPE_MGMT);
901 stypes >>= 1;
902 i++;
903 }
904 nla_nest_end(msg, nl_ftypes);
905 }
906 nla_nest_end(msg, nl_ifs);
907 }
908
909 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
910 struct nlattr *nl_wowlan;
911
912 nl_wowlan = nla_nest_start(msg,
913 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
914 if (!nl_wowlan)
915 goto nla_put_failure;
916
917 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
918 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
919 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
920 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
921 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
922 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
923 if (dev->wiphy.wowlan.n_patterns) {
924 struct nl80211_wowlan_pattern_support pat = {
925 .max_patterns = dev->wiphy.wowlan.n_patterns,
926 .min_pattern_len =
927 dev->wiphy.wowlan.pattern_min_len,
928 .max_pattern_len =
929 dev->wiphy.wowlan.pattern_max_len,
930 };
931 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
932 sizeof(pat), &pat);
933 }
934
935 nla_nest_end(msg, nl_wowlan);
936 }
937
938 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
939 dev->wiphy.software_iftypes))
940 goto nla_put_failure;
941
942 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
943 goto nla_put_failure;
944
945 return genlmsg_end(msg, hdr);
946
947 nla_put_failure:
948 genlmsg_cancel(msg, hdr);
949 return -EMSGSIZE;
950 }
951
952 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
953 {
954 int idx = 0;
955 int start = cb->args[0];
956 struct cfg80211_registered_device *dev;
957
958 mutex_lock(&cfg80211_mutex);
959 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
960 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
961 continue;
962 if (++idx <= start)
963 continue;
964 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
965 cb->nlh->nlmsg_seq, NLM_F_MULTI,
966 dev) < 0) {
967 idx--;
968 break;
969 }
970 }
971 mutex_unlock(&cfg80211_mutex);
972
973 cb->args[0] = idx;
974
975 return skb->len;
976 }
977
978 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
979 {
980 struct sk_buff *msg;
981 struct cfg80211_registered_device *dev = info->user_ptr[0];
982
983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
984 if (!msg)
985 return -ENOMEM;
986
987 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
988 nlmsg_free(msg);
989 return -ENOBUFS;
990 }
991
992 return genlmsg_reply(msg, info);
993 }
994
995 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
996 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
997 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
998 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
999 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1000 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1001 };
1002
1003 static int parse_txq_params(struct nlattr *tb[],
1004 struct ieee80211_txq_params *txq_params)
1005 {
1006 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1007 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1008 !tb[NL80211_TXQ_ATTR_AIFS])
1009 return -EINVAL;
1010
1011 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1012 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1013 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1014 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1015 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1016
1017 return 0;
1018 }
1019
1020 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1021 {
1022 /*
1023 * You can only set the channel explicitly for AP, mesh
1024 * and WDS type interfaces; all others have their channel
1025 * managed via their respective "establish a connection"
1026 * command (connect, join, ...)
1027 *
1028 * Monitors are special as they are normally slaved to
1029 * whatever else is going on, so they behave as though
1030 * you tried setting the wiphy channel itself.
1031 */
1032 return !wdev ||
1033 wdev->iftype == NL80211_IFTYPE_AP ||
1034 wdev->iftype == NL80211_IFTYPE_WDS ||
1035 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1036 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1037 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1038 }
1039
1040 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1041 struct wireless_dev *wdev,
1042 struct genl_info *info)
1043 {
1044 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1045 u32 freq;
1046 int result;
1047
1048 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1049 return -EINVAL;
1050
1051 if (!nl80211_can_set_dev_channel(wdev))
1052 return -EOPNOTSUPP;
1053
1054 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1055 channel_type = nla_get_u32(info->attrs[
1056 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1057 if (channel_type != NL80211_CHAN_NO_HT &&
1058 channel_type != NL80211_CHAN_HT20 &&
1059 channel_type != NL80211_CHAN_HT40PLUS &&
1060 channel_type != NL80211_CHAN_HT40MINUS)
1061 return -EINVAL;
1062 }
1063
1064 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1065
1066 mutex_lock(&rdev->devlist_mtx);
1067 if (wdev) {
1068 wdev_lock(wdev);
1069 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1070 wdev_unlock(wdev);
1071 } else {
1072 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1073 }
1074 mutex_unlock(&rdev->devlist_mtx);
1075
1076 return result;
1077 }
1078
1079 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1080 {
1081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1082 struct net_device *netdev = info->user_ptr[1];
1083
1084 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1085 }
1086
1087 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1088 {
1089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1090 struct net_device *dev = info->user_ptr[1];
1091 struct wireless_dev *wdev = dev->ieee80211_ptr;
1092 const u8 *bssid;
1093
1094 if (!info->attrs[NL80211_ATTR_MAC])
1095 return -EINVAL;
1096
1097 if (netif_running(dev))
1098 return -EBUSY;
1099
1100 if (!rdev->ops->set_wds_peer)
1101 return -EOPNOTSUPP;
1102
1103 if (wdev->iftype != NL80211_IFTYPE_WDS)
1104 return -EOPNOTSUPP;
1105
1106 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1107 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1108 }
1109
1110
1111 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1112 {
1113 struct cfg80211_registered_device *rdev;
1114 struct net_device *netdev = NULL;
1115 struct wireless_dev *wdev;
1116 int result = 0, rem_txq_params = 0;
1117 struct nlattr *nl_txq_params;
1118 u32 changed;
1119 u8 retry_short = 0, retry_long = 0;
1120 u32 frag_threshold = 0, rts_threshold = 0;
1121 u8 coverage_class = 0;
1122
1123 /*
1124 * Try to find the wiphy and netdev. Normally this
1125 * function shouldn't need the netdev, but this is
1126 * done for backward compatibility -- previously
1127 * setting the channel was done per wiphy, but now
1128 * it is per netdev. Previous userland like hostapd
1129 * also passed a netdev to set_wiphy, so that it is
1130 * possible to let that go to the right netdev!
1131 */
1132 mutex_lock(&cfg80211_mutex);
1133
1134 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1135 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1136
1137 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1138 if (netdev && netdev->ieee80211_ptr) {
1139 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1140 mutex_lock(&rdev->mtx);
1141 } else
1142 netdev = NULL;
1143 }
1144
1145 if (!netdev) {
1146 rdev = __cfg80211_rdev_from_info(info);
1147 if (IS_ERR(rdev)) {
1148 mutex_unlock(&cfg80211_mutex);
1149 return PTR_ERR(rdev);
1150 }
1151 wdev = NULL;
1152 netdev = NULL;
1153 result = 0;
1154
1155 mutex_lock(&rdev->mtx);
1156 } else if (netif_running(netdev) &&
1157 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1158 wdev = netdev->ieee80211_ptr;
1159 else
1160 wdev = NULL;
1161
1162 /*
1163 * end workaround code, by now the rdev is available
1164 * and locked, and wdev may or may not be NULL.
1165 */
1166
1167 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1168 result = cfg80211_dev_rename(
1169 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1170
1171 mutex_unlock(&cfg80211_mutex);
1172
1173 if (result)
1174 goto bad_res;
1175
1176 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1177 struct ieee80211_txq_params txq_params;
1178 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1179
1180 if (!rdev->ops->set_txq_params) {
1181 result = -EOPNOTSUPP;
1182 goto bad_res;
1183 }
1184
1185 nla_for_each_nested(nl_txq_params,
1186 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1187 rem_txq_params) {
1188 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1189 nla_data(nl_txq_params),
1190 nla_len(nl_txq_params),
1191 txq_params_policy);
1192 result = parse_txq_params(tb, &txq_params);
1193 if (result)
1194 goto bad_res;
1195
1196 result = rdev->ops->set_txq_params(&rdev->wiphy,
1197 &txq_params);
1198 if (result)
1199 goto bad_res;
1200 }
1201 }
1202
1203 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1204 result = __nl80211_set_channel(rdev, wdev, info);
1205 if (result)
1206 goto bad_res;
1207 }
1208
1209 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1210 enum nl80211_tx_power_setting type;
1211 int idx, mbm = 0;
1212
1213 if (!rdev->ops->set_tx_power) {
1214 result = -EOPNOTSUPP;
1215 goto bad_res;
1216 }
1217
1218 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1219 type = nla_get_u32(info->attrs[idx]);
1220
1221 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1222 (type != NL80211_TX_POWER_AUTOMATIC)) {
1223 result = -EINVAL;
1224 goto bad_res;
1225 }
1226
1227 if (type != NL80211_TX_POWER_AUTOMATIC) {
1228 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1229 mbm = nla_get_u32(info->attrs[idx]);
1230 }
1231
1232 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1233 if (result)
1234 goto bad_res;
1235 }
1236
1237 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1238 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1239 u32 tx_ant, rx_ant;
1240 if ((!rdev->wiphy.available_antennas_tx &&
1241 !rdev->wiphy.available_antennas_rx) ||
1242 !rdev->ops->set_antenna) {
1243 result = -EOPNOTSUPP;
1244 goto bad_res;
1245 }
1246
1247 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1248 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1249
1250 /* reject antenna configurations which don't match the
1251 * available antenna masks, except for the "all" mask */
1252 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1253 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1254 result = -EINVAL;
1255 goto bad_res;
1256 }
1257
1258 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1259 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1260
1261 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1262 if (result)
1263 goto bad_res;
1264 }
1265
1266 changed = 0;
1267
1268 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1269 retry_short = nla_get_u8(
1270 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1271 if (retry_short == 0) {
1272 result = -EINVAL;
1273 goto bad_res;
1274 }
1275 changed |= WIPHY_PARAM_RETRY_SHORT;
1276 }
1277
1278 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1279 retry_long = nla_get_u8(
1280 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1281 if (retry_long == 0) {
1282 result = -EINVAL;
1283 goto bad_res;
1284 }
1285 changed |= WIPHY_PARAM_RETRY_LONG;
1286 }
1287
1288 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1289 frag_threshold = nla_get_u32(
1290 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1291 if (frag_threshold < 256) {
1292 result = -EINVAL;
1293 goto bad_res;
1294 }
1295 if (frag_threshold != (u32) -1) {
1296 /*
1297 * Fragments (apart from the last one) are required to
1298 * have even length. Make the fragmentation code
1299 * simpler by stripping LSB should someone try to use
1300 * odd threshold value.
1301 */
1302 frag_threshold &= ~0x1;
1303 }
1304 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1305 }
1306
1307 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1308 rts_threshold = nla_get_u32(
1309 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1310 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1311 }
1312
1313 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1314 coverage_class = nla_get_u8(
1315 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1316 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1317 }
1318
1319 if (changed) {
1320 u8 old_retry_short, old_retry_long;
1321 u32 old_frag_threshold, old_rts_threshold;
1322 u8 old_coverage_class;
1323
1324 if (!rdev->ops->set_wiphy_params) {
1325 result = -EOPNOTSUPP;
1326 goto bad_res;
1327 }
1328
1329 old_retry_short = rdev->wiphy.retry_short;
1330 old_retry_long = rdev->wiphy.retry_long;
1331 old_frag_threshold = rdev->wiphy.frag_threshold;
1332 old_rts_threshold = rdev->wiphy.rts_threshold;
1333 old_coverage_class = rdev->wiphy.coverage_class;
1334
1335 if (changed & WIPHY_PARAM_RETRY_SHORT)
1336 rdev->wiphy.retry_short = retry_short;
1337 if (changed & WIPHY_PARAM_RETRY_LONG)
1338 rdev->wiphy.retry_long = retry_long;
1339 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1340 rdev->wiphy.frag_threshold = frag_threshold;
1341 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1342 rdev->wiphy.rts_threshold = rts_threshold;
1343 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1344 rdev->wiphy.coverage_class = coverage_class;
1345
1346 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1347 if (result) {
1348 rdev->wiphy.retry_short = old_retry_short;
1349 rdev->wiphy.retry_long = old_retry_long;
1350 rdev->wiphy.frag_threshold = old_frag_threshold;
1351 rdev->wiphy.rts_threshold = old_rts_threshold;
1352 rdev->wiphy.coverage_class = old_coverage_class;
1353 }
1354 }
1355
1356 bad_res:
1357 mutex_unlock(&rdev->mtx);
1358 if (netdev)
1359 dev_put(netdev);
1360 return result;
1361 }
1362
1363
1364 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1365 struct cfg80211_registered_device *rdev,
1366 struct net_device *dev)
1367 {
1368 void *hdr;
1369
1370 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1371 if (!hdr)
1372 return -1;
1373
1374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1375 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1376 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1377 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1378
1379 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1380 rdev->devlist_generation ^
1381 (cfg80211_rdev_list_generation << 2));
1382
1383 return genlmsg_end(msg, hdr);
1384
1385 nla_put_failure:
1386 genlmsg_cancel(msg, hdr);
1387 return -EMSGSIZE;
1388 }
1389
1390 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1391 {
1392 int wp_idx = 0;
1393 int if_idx = 0;
1394 int wp_start = cb->args[0];
1395 int if_start = cb->args[1];
1396 struct cfg80211_registered_device *rdev;
1397 struct wireless_dev *wdev;
1398
1399 mutex_lock(&cfg80211_mutex);
1400 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1401 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1402 continue;
1403 if (wp_idx < wp_start) {
1404 wp_idx++;
1405 continue;
1406 }
1407 if_idx = 0;
1408
1409 mutex_lock(&rdev->devlist_mtx);
1410 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1411 if (if_idx < if_start) {
1412 if_idx++;
1413 continue;
1414 }
1415 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1416 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1417 rdev, wdev->netdev) < 0) {
1418 mutex_unlock(&rdev->devlist_mtx);
1419 goto out;
1420 }
1421 if_idx++;
1422 }
1423 mutex_unlock(&rdev->devlist_mtx);
1424
1425 wp_idx++;
1426 }
1427 out:
1428 mutex_unlock(&cfg80211_mutex);
1429
1430 cb->args[0] = wp_idx;
1431 cb->args[1] = if_idx;
1432
1433 return skb->len;
1434 }
1435
1436 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1437 {
1438 struct sk_buff *msg;
1439 struct cfg80211_registered_device *dev = info->user_ptr[0];
1440 struct net_device *netdev = info->user_ptr[1];
1441
1442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1443 if (!msg)
1444 return -ENOMEM;
1445
1446 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1447 dev, netdev) < 0) {
1448 nlmsg_free(msg);
1449 return -ENOBUFS;
1450 }
1451
1452 return genlmsg_reply(msg, info);
1453 }
1454
1455 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1456 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1457 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1458 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1459 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1460 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1461 };
1462
1463 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1464 {
1465 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1466 int flag;
1467
1468 *mntrflags = 0;
1469
1470 if (!nla)
1471 return -EINVAL;
1472
1473 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1474 nla, mntr_flags_policy))
1475 return -EINVAL;
1476
1477 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1478 if (flags[flag])
1479 *mntrflags |= (1<<flag);
1480
1481 return 0;
1482 }
1483
1484 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1485 struct net_device *netdev, u8 use_4addr,
1486 enum nl80211_iftype iftype)
1487 {
1488 if (!use_4addr) {
1489 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1490 return -EBUSY;
1491 return 0;
1492 }
1493
1494 switch (iftype) {
1495 case NL80211_IFTYPE_AP_VLAN:
1496 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1497 return 0;
1498 break;
1499 case NL80211_IFTYPE_STATION:
1500 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1501 return 0;
1502 break;
1503 default:
1504 break;
1505 }
1506
1507 return -EOPNOTSUPP;
1508 }
1509
1510 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1511 {
1512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1513 struct vif_params params;
1514 int err;
1515 enum nl80211_iftype otype, ntype;
1516 struct net_device *dev = info->user_ptr[1];
1517 u32 _flags, *flags = NULL;
1518 bool change = false;
1519
1520 memset(&params, 0, sizeof(params));
1521
1522 otype = ntype = dev->ieee80211_ptr->iftype;
1523
1524 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1525 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1526 if (otype != ntype)
1527 change = true;
1528 if (ntype > NL80211_IFTYPE_MAX)
1529 return -EINVAL;
1530 }
1531
1532 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1533 struct wireless_dev *wdev = dev->ieee80211_ptr;
1534
1535 if (ntype != NL80211_IFTYPE_MESH_POINT)
1536 return -EINVAL;
1537 if (netif_running(dev))
1538 return -EBUSY;
1539
1540 wdev_lock(wdev);
1541 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1542 IEEE80211_MAX_MESH_ID_LEN);
1543 wdev->mesh_id_up_len =
1544 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1545 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1546 wdev->mesh_id_up_len);
1547 wdev_unlock(wdev);
1548 }
1549
1550 if (info->attrs[NL80211_ATTR_4ADDR]) {
1551 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1552 change = true;
1553 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1554 if (err)
1555 return err;
1556 } else {
1557 params.use_4addr = -1;
1558 }
1559
1560 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1561 if (ntype != NL80211_IFTYPE_MONITOR)
1562 return -EINVAL;
1563 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1564 &_flags);
1565 if (err)
1566 return err;
1567
1568 flags = &_flags;
1569 change = true;
1570 }
1571
1572 if (change)
1573 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1574 else
1575 err = 0;
1576
1577 if (!err && params.use_4addr != -1)
1578 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1579
1580 return err;
1581 }
1582
1583 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1584 {
1585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1586 struct vif_params params;
1587 struct net_device *dev;
1588 int err;
1589 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1590 u32 flags;
1591
1592 memset(&params, 0, sizeof(params));
1593
1594 if (!info->attrs[NL80211_ATTR_IFNAME])
1595 return -EINVAL;
1596
1597 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1598 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1599 if (type > NL80211_IFTYPE_MAX)
1600 return -EINVAL;
1601 }
1602
1603 if (!rdev->ops->add_virtual_intf ||
1604 !(rdev->wiphy.interface_modes & (1 << type)))
1605 return -EOPNOTSUPP;
1606
1607 if (info->attrs[NL80211_ATTR_4ADDR]) {
1608 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1609 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1610 if (err)
1611 return err;
1612 }
1613
1614 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1615 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1616 &flags);
1617 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1618 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1619 type, err ? NULL : &flags, &params);
1620 if (IS_ERR(dev))
1621 return PTR_ERR(dev);
1622
1623 if (type == NL80211_IFTYPE_MESH_POINT &&
1624 info->attrs[NL80211_ATTR_MESH_ID]) {
1625 struct wireless_dev *wdev = dev->ieee80211_ptr;
1626
1627 wdev_lock(wdev);
1628 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1629 IEEE80211_MAX_MESH_ID_LEN);
1630 wdev->mesh_id_up_len =
1631 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1632 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1633 wdev->mesh_id_up_len);
1634 wdev_unlock(wdev);
1635 }
1636
1637 return 0;
1638 }
1639
1640 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1641 {
1642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1643 struct net_device *dev = info->user_ptr[1];
1644
1645 if (!rdev->ops->del_virtual_intf)
1646 return -EOPNOTSUPP;
1647
1648 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1649 }
1650
1651 struct get_key_cookie {
1652 struct sk_buff *msg;
1653 int error;
1654 int idx;
1655 };
1656
1657 static void get_key_callback(void *c, struct key_params *params)
1658 {
1659 struct nlattr *key;
1660 struct get_key_cookie *cookie = c;
1661
1662 if (params->key)
1663 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1664 params->key_len, params->key);
1665
1666 if (params->seq)
1667 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1668 params->seq_len, params->seq);
1669
1670 if (params->cipher)
1671 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1672 params->cipher);
1673
1674 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1675 if (!key)
1676 goto nla_put_failure;
1677
1678 if (params->key)
1679 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1680 params->key_len, params->key);
1681
1682 if (params->seq)
1683 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1684 params->seq_len, params->seq);
1685
1686 if (params->cipher)
1687 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1688 params->cipher);
1689
1690 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1691
1692 nla_nest_end(cookie->msg, key);
1693
1694 return;
1695 nla_put_failure:
1696 cookie->error = 1;
1697 }
1698
1699 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1700 {
1701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1702 int err;
1703 struct net_device *dev = info->user_ptr[1];
1704 u8 key_idx = 0;
1705 const u8 *mac_addr = NULL;
1706 bool pairwise;
1707 struct get_key_cookie cookie = {
1708 .error = 0,
1709 };
1710 void *hdr;
1711 struct sk_buff *msg;
1712
1713 if (info->attrs[NL80211_ATTR_KEY_IDX])
1714 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1715
1716 if (key_idx > 5)
1717 return -EINVAL;
1718
1719 if (info->attrs[NL80211_ATTR_MAC])
1720 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1721
1722 pairwise = !!mac_addr;
1723 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1724 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1725 if (kt >= NUM_NL80211_KEYTYPES)
1726 return -EINVAL;
1727 if (kt != NL80211_KEYTYPE_GROUP &&
1728 kt != NL80211_KEYTYPE_PAIRWISE)
1729 return -EINVAL;
1730 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1731 }
1732
1733 if (!rdev->ops->get_key)
1734 return -EOPNOTSUPP;
1735
1736 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1737 if (!msg)
1738 return -ENOMEM;
1739
1740 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1741 NL80211_CMD_NEW_KEY);
1742 if (IS_ERR(hdr))
1743 return PTR_ERR(hdr);
1744
1745 cookie.msg = msg;
1746 cookie.idx = key_idx;
1747
1748 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1749 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1750 if (mac_addr)
1751 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1752
1753 if (pairwise && mac_addr &&
1754 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1755 return -ENOENT;
1756
1757 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1758 mac_addr, &cookie, get_key_callback);
1759
1760 if (err)
1761 goto free_msg;
1762
1763 if (cookie.error)
1764 goto nla_put_failure;
1765
1766 genlmsg_end(msg, hdr);
1767 return genlmsg_reply(msg, info);
1768
1769 nla_put_failure:
1770 err = -ENOBUFS;
1771 free_msg:
1772 nlmsg_free(msg);
1773 return err;
1774 }
1775
1776 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1777 {
1778 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1779 struct key_parse key;
1780 int err;
1781 struct net_device *dev = info->user_ptr[1];
1782
1783 err = nl80211_parse_key(info, &key);
1784 if (err)
1785 return err;
1786
1787 if (key.idx < 0)
1788 return -EINVAL;
1789
1790 /* only support setting default key */
1791 if (!key.def && !key.defmgmt)
1792 return -EINVAL;
1793
1794 wdev_lock(dev->ieee80211_ptr);
1795
1796 if (key.def) {
1797 if (!rdev->ops->set_default_key) {
1798 err = -EOPNOTSUPP;
1799 goto out;
1800 }
1801
1802 err = nl80211_key_allowed(dev->ieee80211_ptr);
1803 if (err)
1804 goto out;
1805
1806 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1807 key.def_uni, key.def_multi);
1808
1809 if (err)
1810 goto out;
1811
1812 #ifdef CONFIG_CFG80211_WEXT
1813 dev->ieee80211_ptr->wext.default_key = key.idx;
1814 #endif
1815 } else {
1816 if (key.def_uni || !key.def_multi) {
1817 err = -EINVAL;
1818 goto out;
1819 }
1820
1821 if (!rdev->ops->set_default_mgmt_key) {
1822 err = -EOPNOTSUPP;
1823 goto out;
1824 }
1825
1826 err = nl80211_key_allowed(dev->ieee80211_ptr);
1827 if (err)
1828 goto out;
1829
1830 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1831 dev, key.idx);
1832 if (err)
1833 goto out;
1834
1835 #ifdef CONFIG_CFG80211_WEXT
1836 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1837 #endif
1838 }
1839
1840 out:
1841 wdev_unlock(dev->ieee80211_ptr);
1842
1843 return err;
1844 }
1845
1846 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1847 {
1848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1849 int err;
1850 struct net_device *dev = info->user_ptr[1];
1851 struct key_parse key;
1852 const u8 *mac_addr = NULL;
1853
1854 err = nl80211_parse_key(info, &key);
1855 if (err)
1856 return err;
1857
1858 if (!key.p.key)
1859 return -EINVAL;
1860
1861 if (info->attrs[NL80211_ATTR_MAC])
1862 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1863
1864 if (key.type == -1) {
1865 if (mac_addr)
1866 key.type = NL80211_KEYTYPE_PAIRWISE;
1867 else
1868 key.type = NL80211_KEYTYPE_GROUP;
1869 }
1870
1871 /* for now */
1872 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1873 key.type != NL80211_KEYTYPE_GROUP)
1874 return -EINVAL;
1875
1876 if (!rdev->ops->add_key)
1877 return -EOPNOTSUPP;
1878
1879 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1880 key.type == NL80211_KEYTYPE_PAIRWISE,
1881 mac_addr))
1882 return -EINVAL;
1883
1884 wdev_lock(dev->ieee80211_ptr);
1885 err = nl80211_key_allowed(dev->ieee80211_ptr);
1886 if (!err)
1887 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1888 key.type == NL80211_KEYTYPE_PAIRWISE,
1889 mac_addr, &key.p);
1890 wdev_unlock(dev->ieee80211_ptr);
1891
1892 return err;
1893 }
1894
1895 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1896 {
1897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1898 int err;
1899 struct net_device *dev = info->user_ptr[1];
1900 u8 *mac_addr = NULL;
1901 struct key_parse key;
1902
1903 err = nl80211_parse_key(info, &key);
1904 if (err)
1905 return err;
1906
1907 if (info->attrs[NL80211_ATTR_MAC])
1908 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1909
1910 if (key.type == -1) {
1911 if (mac_addr)
1912 key.type = NL80211_KEYTYPE_PAIRWISE;
1913 else
1914 key.type = NL80211_KEYTYPE_GROUP;
1915 }
1916
1917 /* for now */
1918 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1919 key.type != NL80211_KEYTYPE_GROUP)
1920 return -EINVAL;
1921
1922 if (!rdev->ops->del_key)
1923 return -EOPNOTSUPP;
1924
1925 wdev_lock(dev->ieee80211_ptr);
1926 err = nl80211_key_allowed(dev->ieee80211_ptr);
1927
1928 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1929 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1930 err = -ENOENT;
1931
1932 if (!err)
1933 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1934 key.type == NL80211_KEYTYPE_PAIRWISE,
1935 mac_addr);
1936
1937 #ifdef CONFIG_CFG80211_WEXT
1938 if (!err) {
1939 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1940 dev->ieee80211_ptr->wext.default_key = -1;
1941 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1942 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1943 }
1944 #endif
1945 wdev_unlock(dev->ieee80211_ptr);
1946
1947 return err;
1948 }
1949
1950 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1951 {
1952 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1953 struct beacon_parameters *info);
1954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1955 struct net_device *dev = info->user_ptr[1];
1956 struct wireless_dev *wdev = dev->ieee80211_ptr;
1957 struct beacon_parameters params;
1958 int haveinfo = 0, err;
1959
1960 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1961 return -EINVAL;
1962
1963 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1964 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1965 return -EOPNOTSUPP;
1966
1967 memset(&params, 0, sizeof(params));
1968
1969 switch (info->genlhdr->cmd) {
1970 case NL80211_CMD_NEW_BEACON:
1971 /* these are required for NEW_BEACON */
1972 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1973 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
1974 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1975 return -EINVAL;
1976
1977 params.interval =
1978 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1979 params.dtim_period =
1980 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1981
1982 err = cfg80211_validate_beacon_int(rdev, params.interval);
1983 if (err)
1984 return err;
1985
1986 call = rdev->ops->add_beacon;
1987 break;
1988 case NL80211_CMD_SET_BEACON:
1989 call = rdev->ops->set_beacon;
1990 break;
1991 default:
1992 WARN_ON(1);
1993 return -EOPNOTSUPP;
1994 }
1995
1996 if (!call)
1997 return -EOPNOTSUPP;
1998
1999 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2000 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2001 params.head_len =
2002 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2003 haveinfo = 1;
2004 }
2005
2006 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2007 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2008 params.tail_len =
2009 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2010 haveinfo = 1;
2011 }
2012
2013 if (!haveinfo)
2014 return -EINVAL;
2015
2016 err = call(&rdev->wiphy, dev, &params);
2017 if (!err && params.interval)
2018 wdev->beacon_interval = params.interval;
2019 return err;
2020 }
2021
2022 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2023 {
2024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2025 struct net_device *dev = info->user_ptr[1];
2026 struct wireless_dev *wdev = dev->ieee80211_ptr;
2027 int err;
2028
2029 if (!rdev->ops->del_beacon)
2030 return -EOPNOTSUPP;
2031
2032 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2033 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2034 return -EOPNOTSUPP;
2035
2036 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2037 if (!err)
2038 wdev->beacon_interval = 0;
2039 return err;
2040 }
2041
2042 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2043 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2044 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2045 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2046 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2047 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2048 };
2049
2050 static int parse_station_flags(struct genl_info *info,
2051 struct station_parameters *params)
2052 {
2053 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2054 struct nlattr *nla;
2055 int flag;
2056
2057 /*
2058 * Try parsing the new attribute first so userspace
2059 * can specify both for older kernels.
2060 */
2061 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2062 if (nla) {
2063 struct nl80211_sta_flag_update *sta_flags;
2064
2065 sta_flags = nla_data(nla);
2066 params->sta_flags_mask = sta_flags->mask;
2067 params->sta_flags_set = sta_flags->set;
2068 if ((params->sta_flags_mask |
2069 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2070 return -EINVAL;
2071 return 0;
2072 }
2073
2074 /* if present, parse the old attribute */
2075
2076 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2077 if (!nla)
2078 return 0;
2079
2080 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2081 nla, sta_flags_policy))
2082 return -EINVAL;
2083
2084 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2085 params->sta_flags_mask &= ~1;
2086
2087 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2088 if (flags[flag])
2089 params->sta_flags_set |= (1<<flag);
2090
2091 return 0;
2092 }
2093
2094 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2095 int attr)
2096 {
2097 struct nlattr *rate;
2098 u16 bitrate;
2099
2100 rate = nla_nest_start(msg, attr);
2101 if (!rate)
2102 goto nla_put_failure;
2103
2104 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2105 bitrate = cfg80211_calculate_bitrate(info);
2106 if (bitrate > 0)
2107 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2108
2109 if (info->flags & RATE_INFO_FLAGS_MCS)
2110 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2111 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2112 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2113 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2114 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2115
2116 nla_nest_end(msg, rate);
2117 return true;
2118
2119 nla_put_failure:
2120 return false;
2121 }
2122
2123 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2124 int flags, struct net_device *dev,
2125 const u8 *mac_addr, struct station_info *sinfo)
2126 {
2127 void *hdr;
2128 struct nlattr *sinfoattr, *bss_param;
2129
2130 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2131 if (!hdr)
2132 return -1;
2133
2134 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2135 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2136
2137 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2138
2139 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2140 if (!sinfoattr)
2141 goto nla_put_failure;
2142 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2143 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2144 sinfo->connected_time);
2145 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2146 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2147 sinfo->inactive_time);
2148 if (sinfo->filled & STATION_INFO_RX_BYTES)
2149 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2150 sinfo->rx_bytes);
2151 if (sinfo->filled & STATION_INFO_TX_BYTES)
2152 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2153 sinfo->tx_bytes);
2154 if (sinfo->filled & STATION_INFO_LLID)
2155 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2156 sinfo->llid);
2157 if (sinfo->filled & STATION_INFO_PLID)
2158 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2159 sinfo->plid);
2160 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2161 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2162 sinfo->plink_state);
2163 if (sinfo->filled & STATION_INFO_SIGNAL)
2164 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2165 sinfo->signal);
2166 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2167 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2168 sinfo->signal_avg);
2169 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2170 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2171 NL80211_STA_INFO_TX_BITRATE))
2172 goto nla_put_failure;
2173 }
2174 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2175 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2176 NL80211_STA_INFO_RX_BITRATE))
2177 goto nla_put_failure;
2178 }
2179 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2180 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2181 sinfo->rx_packets);
2182 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2183 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2184 sinfo->tx_packets);
2185 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2186 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2187 sinfo->tx_retries);
2188 if (sinfo->filled & STATION_INFO_TX_FAILED)
2189 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2190 sinfo->tx_failed);
2191 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2192 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2193 if (!bss_param)
2194 goto nla_put_failure;
2195
2196 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2197 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2198 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2199 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2200 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2201 NLA_PUT_FLAG(msg,
2202 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2203 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2204 sinfo->bss_param.dtim_period);
2205 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2206 sinfo->bss_param.beacon_interval);
2207
2208 nla_nest_end(msg, bss_param);
2209 }
2210 nla_nest_end(msg, sinfoattr);
2211
2212 return genlmsg_end(msg, hdr);
2213
2214 nla_put_failure:
2215 genlmsg_cancel(msg, hdr);
2216 return -EMSGSIZE;
2217 }
2218
2219 static int nl80211_dump_station(struct sk_buff *skb,
2220 struct netlink_callback *cb)
2221 {
2222 struct station_info sinfo;
2223 struct cfg80211_registered_device *dev;
2224 struct net_device *netdev;
2225 u8 mac_addr[ETH_ALEN];
2226 int sta_idx = cb->args[1];
2227 int err;
2228
2229 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2230 if (err)
2231 return err;
2232
2233 if (!dev->ops->dump_station) {
2234 err = -EOPNOTSUPP;
2235 goto out_err;
2236 }
2237
2238 while (1) {
2239 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2240 mac_addr, &sinfo);
2241 if (err == -ENOENT)
2242 break;
2243 if (err)
2244 goto out_err;
2245
2246 if (nl80211_send_station(skb,
2247 NETLINK_CB(cb->skb).pid,
2248 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2249 netdev, mac_addr,
2250 &sinfo) < 0)
2251 goto out;
2252
2253 sta_idx++;
2254 }
2255
2256
2257 out:
2258 cb->args[1] = sta_idx;
2259 err = skb->len;
2260 out_err:
2261 nl80211_finish_netdev_dump(dev);
2262
2263 return err;
2264 }
2265
2266 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2267 {
2268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2269 struct net_device *dev = info->user_ptr[1];
2270 struct station_info sinfo;
2271 struct sk_buff *msg;
2272 u8 *mac_addr = NULL;
2273 int err;
2274
2275 memset(&sinfo, 0, sizeof(sinfo));
2276
2277 if (!info->attrs[NL80211_ATTR_MAC])
2278 return -EINVAL;
2279
2280 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2281
2282 if (!rdev->ops->get_station)
2283 return -EOPNOTSUPP;
2284
2285 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2286 if (err)
2287 return err;
2288
2289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2290 if (!msg)
2291 return -ENOMEM;
2292
2293 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2294 dev, mac_addr, &sinfo) < 0) {
2295 nlmsg_free(msg);
2296 return -ENOBUFS;
2297 }
2298
2299 return genlmsg_reply(msg, info);
2300 }
2301
2302 /*
2303 * Get vlan interface making sure it is running and on the right wiphy.
2304 */
2305 static int get_vlan(struct genl_info *info,
2306 struct cfg80211_registered_device *rdev,
2307 struct net_device **vlan)
2308 {
2309 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2310 *vlan = NULL;
2311
2312 if (vlanattr) {
2313 *vlan = dev_get_by_index(genl_info_net(info),
2314 nla_get_u32(vlanattr));
2315 if (!*vlan)
2316 return -ENODEV;
2317 if (!(*vlan)->ieee80211_ptr)
2318 return -EINVAL;
2319 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2320 return -EINVAL;
2321 if (!netif_running(*vlan))
2322 return -ENETDOWN;
2323 }
2324 return 0;
2325 }
2326
2327 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2328 {
2329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2330 int err;
2331 struct net_device *dev = info->user_ptr[1];
2332 struct station_parameters params;
2333 u8 *mac_addr = NULL;
2334
2335 memset(&params, 0, sizeof(params));
2336
2337 params.listen_interval = -1;
2338 params.plink_state = PLINK_INVALID;
2339
2340 if (info->attrs[NL80211_ATTR_STA_AID])
2341 return -EINVAL;
2342
2343 if (!info->attrs[NL80211_ATTR_MAC])
2344 return -EINVAL;
2345
2346 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2347
2348 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2349 params.supported_rates =
2350 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2351 params.supported_rates_len =
2352 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2353 }
2354
2355 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2356 params.listen_interval =
2357 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2358
2359 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2360 params.ht_capa =
2361 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2362
2363 if (parse_station_flags(info, &params))
2364 return -EINVAL;
2365
2366 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2367 params.plink_action =
2368 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2369
2370 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2371 params.plink_state =
2372 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2373
2374 err = get_vlan(info, rdev, &params.vlan);
2375 if (err)
2376 goto out;
2377
2378 /* validate settings */
2379 err = 0;
2380
2381 switch (dev->ieee80211_ptr->iftype) {
2382 case NL80211_IFTYPE_AP:
2383 case NL80211_IFTYPE_AP_VLAN:
2384 case NL80211_IFTYPE_P2P_GO:
2385 /* disallow mesh-specific things */
2386 if (params.plink_action)
2387 err = -EINVAL;
2388 break;
2389 case NL80211_IFTYPE_P2P_CLIENT:
2390 case NL80211_IFTYPE_STATION:
2391 /* disallow everything but AUTHORIZED flag */
2392 if (params.plink_action)
2393 err = -EINVAL;
2394 if (params.vlan)
2395 err = -EINVAL;
2396 if (params.supported_rates)
2397 err = -EINVAL;
2398 if (params.ht_capa)
2399 err = -EINVAL;
2400 if (params.listen_interval >= 0)
2401 err = -EINVAL;
2402 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2403 err = -EINVAL;
2404 break;
2405 case NL80211_IFTYPE_MESH_POINT:
2406 /* disallow things mesh doesn't support */
2407 if (params.vlan)
2408 err = -EINVAL;
2409 if (params.ht_capa)
2410 err = -EINVAL;
2411 if (params.listen_interval >= 0)
2412 err = -EINVAL;
2413 if (params.sta_flags_mask &
2414 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2415 BIT(NL80211_STA_FLAG_MFP) |
2416 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2417 err = -EINVAL;
2418 break;
2419 default:
2420 err = -EINVAL;
2421 }
2422
2423 if (err)
2424 goto out;
2425
2426 if (!rdev->ops->change_station) {
2427 err = -EOPNOTSUPP;
2428 goto out;
2429 }
2430
2431 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2432
2433 out:
2434 if (params.vlan)
2435 dev_put(params.vlan);
2436
2437 return err;
2438 }
2439
2440 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2441 {
2442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2443 int err;
2444 struct net_device *dev = info->user_ptr[1];
2445 struct station_parameters params;
2446 u8 *mac_addr = NULL;
2447
2448 memset(&params, 0, sizeof(params));
2449
2450 if (!info->attrs[NL80211_ATTR_MAC])
2451 return -EINVAL;
2452
2453 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2454 return -EINVAL;
2455
2456 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2457 return -EINVAL;
2458
2459 if (!info->attrs[NL80211_ATTR_STA_AID])
2460 return -EINVAL;
2461
2462 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2463 params.supported_rates =
2464 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2465 params.supported_rates_len =
2466 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2467 params.listen_interval =
2468 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2469
2470 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2471 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2472 return -EINVAL;
2473
2474 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2475 params.ht_capa =
2476 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2477
2478 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2479 params.plink_action =
2480 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2481
2482 if (parse_station_flags(info, &params))
2483 return -EINVAL;
2484
2485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2486 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2487 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2488 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2489 return -EINVAL;
2490
2491 err = get_vlan(info, rdev, &params.vlan);
2492 if (err)
2493 goto out;
2494
2495 /* validate settings */
2496 err = 0;
2497
2498 if (!rdev->ops->add_station) {
2499 err = -EOPNOTSUPP;
2500 goto out;
2501 }
2502
2503 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2504
2505 out:
2506 if (params.vlan)
2507 dev_put(params.vlan);
2508 return err;
2509 }
2510
2511 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2512 {
2513 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2514 struct net_device *dev = info->user_ptr[1];
2515 u8 *mac_addr = NULL;
2516
2517 if (info->attrs[NL80211_ATTR_MAC])
2518 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2519
2520 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2521 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2522 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2523 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2524 return -EINVAL;
2525
2526 if (!rdev->ops->del_station)
2527 return -EOPNOTSUPP;
2528
2529 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2530 }
2531
2532 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2533 int flags, struct net_device *dev,
2534 u8 *dst, u8 *next_hop,
2535 struct mpath_info *pinfo)
2536 {
2537 void *hdr;
2538 struct nlattr *pinfoattr;
2539
2540 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2541 if (!hdr)
2542 return -1;
2543
2544 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2545 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2546 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2547
2548 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2549
2550 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2551 if (!pinfoattr)
2552 goto nla_put_failure;
2553 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2554 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2555 pinfo->frame_qlen);
2556 if (pinfo->filled & MPATH_INFO_SN)
2557 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2558 pinfo->sn);
2559 if (pinfo->filled & MPATH_INFO_METRIC)
2560 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2561 pinfo->metric);
2562 if (pinfo->filled & MPATH_INFO_EXPTIME)
2563 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2564 pinfo->exptime);
2565 if (pinfo->filled & MPATH_INFO_FLAGS)
2566 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2567 pinfo->flags);
2568 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2569 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2570 pinfo->discovery_timeout);
2571 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2572 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2573 pinfo->discovery_retries);
2574
2575 nla_nest_end(msg, pinfoattr);
2576
2577 return genlmsg_end(msg, hdr);
2578
2579 nla_put_failure:
2580 genlmsg_cancel(msg, hdr);
2581 return -EMSGSIZE;
2582 }
2583
2584 static int nl80211_dump_mpath(struct sk_buff *skb,
2585 struct netlink_callback *cb)
2586 {
2587 struct mpath_info pinfo;
2588 struct cfg80211_registered_device *dev;
2589 struct net_device *netdev;
2590 u8 dst[ETH_ALEN];
2591 u8 next_hop[ETH_ALEN];
2592 int path_idx = cb->args[1];
2593 int err;
2594
2595 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2596 if (err)
2597 return err;
2598
2599 if (!dev->ops->dump_mpath) {
2600 err = -EOPNOTSUPP;
2601 goto out_err;
2602 }
2603
2604 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2605 err = -EOPNOTSUPP;
2606 goto out_err;
2607 }
2608
2609 while (1) {
2610 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2611 dst, next_hop, &pinfo);
2612 if (err == -ENOENT)
2613 break;
2614 if (err)
2615 goto out_err;
2616
2617 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2618 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2619 netdev, dst, next_hop,
2620 &pinfo) < 0)
2621 goto out;
2622
2623 path_idx++;
2624 }
2625
2626
2627 out:
2628 cb->args[1] = path_idx;
2629 err = skb->len;
2630 out_err:
2631 nl80211_finish_netdev_dump(dev);
2632 return err;
2633 }
2634
2635 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2636 {
2637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2638 int err;
2639 struct net_device *dev = info->user_ptr[1];
2640 struct mpath_info pinfo;
2641 struct sk_buff *msg;
2642 u8 *dst = NULL;
2643 u8 next_hop[ETH_ALEN];
2644
2645 memset(&pinfo, 0, sizeof(pinfo));
2646
2647 if (!info->attrs[NL80211_ATTR_MAC])
2648 return -EINVAL;
2649
2650 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2651
2652 if (!rdev->ops->get_mpath)
2653 return -EOPNOTSUPP;
2654
2655 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2656 return -EOPNOTSUPP;
2657
2658 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2659 if (err)
2660 return err;
2661
2662 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2663 if (!msg)
2664 return -ENOMEM;
2665
2666 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2667 dev, dst, next_hop, &pinfo) < 0) {
2668 nlmsg_free(msg);
2669 return -ENOBUFS;
2670 }
2671
2672 return genlmsg_reply(msg, info);
2673 }
2674
2675 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2676 {
2677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2678 struct net_device *dev = info->user_ptr[1];
2679 u8 *dst = NULL;
2680 u8 *next_hop = NULL;
2681
2682 if (!info->attrs[NL80211_ATTR_MAC])
2683 return -EINVAL;
2684
2685 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2686 return -EINVAL;
2687
2688 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2689 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2690
2691 if (!rdev->ops->change_mpath)
2692 return -EOPNOTSUPP;
2693
2694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2695 return -EOPNOTSUPP;
2696
2697 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2698 }
2699
2700 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2701 {
2702 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2703 struct net_device *dev = info->user_ptr[1];
2704 u8 *dst = NULL;
2705 u8 *next_hop = NULL;
2706
2707 if (!info->attrs[NL80211_ATTR_MAC])
2708 return -EINVAL;
2709
2710 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2711 return -EINVAL;
2712
2713 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2714 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2715
2716 if (!rdev->ops->add_mpath)
2717 return -EOPNOTSUPP;
2718
2719 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2720 return -EOPNOTSUPP;
2721
2722 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2723 }
2724
2725 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2726 {
2727 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2728 struct net_device *dev = info->user_ptr[1];
2729 u8 *dst = NULL;
2730
2731 if (info->attrs[NL80211_ATTR_MAC])
2732 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2733
2734 if (!rdev->ops->del_mpath)
2735 return -EOPNOTSUPP;
2736
2737 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2738 }
2739
2740 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2741 {
2742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743 struct net_device *dev = info->user_ptr[1];
2744 struct bss_parameters params;
2745
2746 memset(&params, 0, sizeof(params));
2747 /* default to not changing parameters */
2748 params.use_cts_prot = -1;
2749 params.use_short_preamble = -1;
2750 params.use_short_slot_time = -1;
2751 params.ap_isolate = -1;
2752 params.ht_opmode = -1;
2753
2754 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2755 params.use_cts_prot =
2756 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2757 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2758 params.use_short_preamble =
2759 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2760 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2761 params.use_short_slot_time =
2762 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2763 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2764 params.basic_rates =
2765 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2766 params.basic_rates_len =
2767 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2768 }
2769 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2770 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2771 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2772 params.ht_opmode =
2773 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2774
2775 if (!rdev->ops->change_bss)
2776 return -EOPNOTSUPP;
2777
2778 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2779 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2780 return -EOPNOTSUPP;
2781
2782 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2783 }
2784
2785 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2786 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2787 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2788 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2789 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2790 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2791 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2792 };
2793
2794 static int parse_reg_rule(struct nlattr *tb[],
2795 struct ieee80211_reg_rule *reg_rule)
2796 {
2797 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2798 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2799
2800 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2801 return -EINVAL;
2802 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2803 return -EINVAL;
2804 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2805 return -EINVAL;
2806 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2807 return -EINVAL;
2808 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2809 return -EINVAL;
2810
2811 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2812
2813 freq_range->start_freq_khz =
2814 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2815 freq_range->end_freq_khz =
2816 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2817 freq_range->max_bandwidth_khz =
2818 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2819
2820 power_rule->max_eirp =
2821 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2822
2823 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2824 power_rule->max_antenna_gain =
2825 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2826
2827 return 0;
2828 }
2829
2830 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2831 {
2832 int r;
2833 char *data = NULL;
2834
2835 /*
2836 * You should only get this when cfg80211 hasn't yet initialized
2837 * completely when built-in to the kernel right between the time
2838 * window between nl80211_init() and regulatory_init(), if that is
2839 * even possible.
2840 */
2841 mutex_lock(&cfg80211_mutex);
2842 if (unlikely(!cfg80211_regdomain)) {
2843 mutex_unlock(&cfg80211_mutex);
2844 return -EINPROGRESS;
2845 }
2846 mutex_unlock(&cfg80211_mutex);
2847
2848 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2849 return -EINVAL;
2850
2851 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2852
2853 r = regulatory_hint_user(data);
2854
2855 return r;
2856 }
2857
2858 static int nl80211_get_mesh_config(struct sk_buff *skb,
2859 struct genl_info *info)
2860 {
2861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2862 struct net_device *dev = info->user_ptr[1];
2863 struct wireless_dev *wdev = dev->ieee80211_ptr;
2864 struct mesh_config cur_params;
2865 int err = 0;
2866 void *hdr;
2867 struct nlattr *pinfoattr;
2868 struct sk_buff *msg;
2869
2870 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2871 return -EOPNOTSUPP;
2872
2873 if (!rdev->ops->get_mesh_config)
2874 return -EOPNOTSUPP;
2875
2876 wdev_lock(wdev);
2877 /* If not connected, get default parameters */
2878 if (!wdev->mesh_id_len)
2879 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2880 else
2881 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
2882 &cur_params);
2883 wdev_unlock(wdev);
2884
2885 if (err)
2886 return err;
2887
2888 /* Draw up a netlink message to send back */
2889 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2890 if (!msg)
2891 return -ENOMEM;
2892 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2893 NL80211_CMD_GET_MESH_CONFIG);
2894 if (!hdr)
2895 goto out;
2896 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
2897 if (!pinfoattr)
2898 goto nla_put_failure;
2899 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2900 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2901 cur_params.dot11MeshRetryTimeout);
2902 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2903 cur_params.dot11MeshConfirmTimeout);
2904 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2905 cur_params.dot11MeshHoldingTimeout);
2906 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2907 cur_params.dot11MeshMaxPeerLinks);
2908 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2909 cur_params.dot11MeshMaxRetries);
2910 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2911 cur_params.dot11MeshTTL);
2912 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2913 cur_params.element_ttl);
2914 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2915 cur_params.auto_open_plinks);
2916 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2917 cur_params.dot11MeshHWMPmaxPREQretries);
2918 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2919 cur_params.path_refresh_time);
2920 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2921 cur_params.min_discovery_timeout);
2922 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2923 cur_params.dot11MeshHWMPactivePathTimeout);
2924 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2925 cur_params.dot11MeshHWMPpreqMinInterval);
2926 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2927 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
2928 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2929 cur_params.dot11MeshHWMPRootMode);
2930 nla_nest_end(msg, pinfoattr);
2931 genlmsg_end(msg, hdr);
2932 return genlmsg_reply(msg, info);
2933
2934 nla_put_failure:
2935 genlmsg_cancel(msg, hdr);
2936 out:
2937 nlmsg_free(msg);
2938 return -ENOBUFS;
2939 }
2940
2941 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
2942 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2943 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2944 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2945 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2946 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2947 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
2948 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
2949 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2950
2951 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2952 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2953 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2954 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2955 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2956 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2957 };
2958
2959 static const struct nla_policy
2960 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
2961 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
2962 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
2963 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
2964 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
2965 .len = IEEE80211_MAX_DATA_LEN },
2966 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
2967 };
2968
2969 static int nl80211_parse_mesh_config(struct genl_info *info,
2970 struct mesh_config *cfg,
2971 u32 *mask_out)
2972 {
2973 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
2974 u32 mask = 0;
2975
2976 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2977 do {\
2978 if (table[attr_num]) {\
2979 cfg->param = nla_fn(table[attr_num]); \
2980 mask |= (1 << (attr_num - 1)); \
2981 } \
2982 } while (0);\
2983
2984
2985 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
2986 return -EINVAL;
2987 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
2988 info->attrs[NL80211_ATTR_MESH_CONFIG],
2989 nl80211_meshconf_params_policy))
2990 return -EINVAL;
2991
2992 /* This makes sure that there aren't more than 32 mesh config
2993 * parameters (otherwise our bitfield scheme would not work.) */
2994 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2995
2996 /* Fill in the params struct */
2997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2998 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2999 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3000 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3002 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3003 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3004 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3005 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3006 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3008 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3009 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3010 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3011 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3012 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3013 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3014 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3015 nla_get_u8);
3016 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3017 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3019 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3020 nla_get_u16);
3021 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3022 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3023 nla_get_u32);
3024 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3025 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3026 nla_get_u16);
3027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3028 dot11MeshHWMPnetDiameterTraversalTime,
3029 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3030 nla_get_u16);
3031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3032 dot11MeshHWMPRootMode, mask,
3033 NL80211_MESHCONF_HWMP_ROOTMODE,
3034 nla_get_u8);
3035 if (mask_out)
3036 *mask_out = mask;
3037
3038 return 0;
3039
3040 #undef FILL_IN_MESH_PARAM_IF_SET
3041 }
3042
3043 static int nl80211_parse_mesh_setup(struct genl_info *info,
3044 struct mesh_setup *setup)
3045 {
3046 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3047
3048 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3049 return -EINVAL;
3050 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3051 info->attrs[NL80211_ATTR_MESH_SETUP],
3052 nl80211_mesh_setup_params_policy))
3053 return -EINVAL;
3054
3055 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3056 setup->path_sel_proto =
3057 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3058 IEEE80211_PATH_PROTOCOL_VENDOR :
3059 IEEE80211_PATH_PROTOCOL_HWMP;
3060
3061 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3062 setup->path_metric =
3063 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3064 IEEE80211_PATH_METRIC_VENDOR :
3065 IEEE80211_PATH_METRIC_AIRTIME;
3066
3067
3068 if (tb[NL80211_MESH_SETUP_IE]) {
3069 struct nlattr *ieattr =
3070 tb[NL80211_MESH_SETUP_IE];
3071 if (!is_valid_ie_attr(ieattr))
3072 return -EINVAL;
3073 setup->ie = nla_data(ieattr);
3074 setup->ie_len = nla_len(ieattr);
3075 }
3076 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3077 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3078
3079 return 0;
3080 }
3081
3082 static int nl80211_update_mesh_config(struct sk_buff *skb,
3083 struct genl_info *info)
3084 {
3085 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3086 struct net_device *dev = info->user_ptr[1];
3087 struct wireless_dev *wdev = dev->ieee80211_ptr;
3088 struct mesh_config cfg;
3089 u32 mask;
3090 int err;
3091
3092 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3093 return -EOPNOTSUPP;
3094
3095 if (!rdev->ops->update_mesh_config)
3096 return -EOPNOTSUPP;
3097
3098 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3099 if (err)
3100 return err;
3101
3102 wdev_lock(wdev);
3103 if (!wdev->mesh_id_len)
3104 err = -ENOLINK;
3105
3106 if (!err)
3107 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3108 mask, &cfg);
3109
3110 wdev_unlock(wdev);
3111
3112 return err;
3113 }
3114
3115 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3116 {
3117 struct sk_buff *msg;
3118 void *hdr = NULL;
3119 struct nlattr *nl_reg_rules;
3120 unsigned int i;
3121 int err = -EINVAL;
3122
3123 mutex_lock(&cfg80211_mutex);
3124
3125 if (!cfg80211_regdomain)
3126 goto out;
3127
3128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3129 if (!msg) {
3130 err = -ENOBUFS;
3131 goto out;
3132 }
3133
3134 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3135 NL80211_CMD_GET_REG);
3136 if (!hdr)
3137 goto put_failure;
3138
3139 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3140 cfg80211_regdomain->alpha2);
3141
3142 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3143 if (!nl_reg_rules)
3144 goto nla_put_failure;
3145
3146 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3147 struct nlattr *nl_reg_rule;
3148 const struct ieee80211_reg_rule *reg_rule;
3149 const struct ieee80211_freq_range *freq_range;
3150 const struct ieee80211_power_rule *power_rule;
3151
3152 reg_rule = &cfg80211_regdomain->reg_rules[i];
3153 freq_range = &reg_rule->freq_range;
3154 power_rule = &reg_rule->power_rule;
3155
3156 nl_reg_rule = nla_nest_start(msg, i);
3157 if (!nl_reg_rule)
3158 goto nla_put_failure;
3159
3160 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3161 reg_rule->flags);
3162 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3163 freq_range->start_freq_khz);
3164 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3165 freq_range->end_freq_khz);
3166 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3167 freq_range->max_bandwidth_khz);
3168 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3169 power_rule->max_antenna_gain);
3170 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3171 power_rule->max_eirp);
3172
3173 nla_nest_end(msg, nl_reg_rule);
3174 }
3175
3176 nla_nest_end(msg, nl_reg_rules);
3177
3178 genlmsg_end(msg, hdr);
3179 err = genlmsg_reply(msg, info);
3180 goto out;
3181
3182 nla_put_failure:
3183 genlmsg_cancel(msg, hdr);
3184 put_failure:
3185 nlmsg_free(msg);
3186 err = -EMSGSIZE;
3187 out:
3188 mutex_unlock(&cfg80211_mutex);
3189 return err;
3190 }
3191
3192 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3193 {
3194 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3195 struct nlattr *nl_reg_rule;
3196 char *alpha2 = NULL;
3197 int rem_reg_rules = 0, r = 0;
3198 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3199 struct ieee80211_regdomain *rd = NULL;
3200
3201 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3202 return -EINVAL;
3203
3204 if (!info->attrs[NL80211_ATTR_REG_RULES])
3205 return -EINVAL;
3206
3207 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3208
3209 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3210 rem_reg_rules) {
3211 num_rules++;
3212 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3213 return -EINVAL;
3214 }
3215
3216 mutex_lock(&cfg80211_mutex);
3217
3218 if (!reg_is_valid_request(alpha2)) {
3219 r = -EINVAL;
3220 goto bad_reg;
3221 }
3222
3223 size_of_regd = sizeof(struct ieee80211_regdomain) +
3224 (num_rules * sizeof(struct ieee80211_reg_rule));
3225
3226 rd = kzalloc(size_of_regd, GFP_KERNEL);
3227 if (!rd) {
3228 r = -ENOMEM;
3229 goto bad_reg;
3230 }
3231
3232 rd->n_reg_rules = num_rules;
3233 rd->alpha2[0] = alpha2[0];
3234 rd->alpha2[1] = alpha2[1];
3235
3236 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3237 rem_reg_rules) {
3238 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3239 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3240 reg_rule_policy);
3241 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3242 if (r)
3243 goto bad_reg;
3244
3245 rule_idx++;
3246
3247 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3248 r = -EINVAL;
3249 goto bad_reg;
3250 }
3251 }
3252
3253 BUG_ON(rule_idx != num_rules);
3254
3255 r = set_regdom(rd);
3256
3257 mutex_unlock(&cfg80211_mutex);
3258
3259 return r;
3260
3261 bad_reg:
3262 mutex_unlock(&cfg80211_mutex);
3263 kfree(rd);
3264 return r;
3265 }
3266
3267 static int validate_scan_freqs(struct nlattr *freqs)
3268 {
3269 struct nlattr *attr1, *attr2;
3270 int n_channels = 0, tmp1, tmp2;
3271
3272 nla_for_each_nested(attr1, freqs, tmp1) {
3273 n_channels++;
3274 /*
3275 * Some hardware has a limited channel list for
3276 * scanning, and it is pretty much nonsensical
3277 * to scan for a channel twice, so disallow that
3278 * and don't require drivers to check that the
3279 * channel list they get isn't longer than what
3280 * they can scan, as long as they can scan all
3281 * the channels they registered at once.
3282 */
3283 nla_for_each_nested(attr2, freqs, tmp2)
3284 if (attr1 != attr2 &&
3285 nla_get_u32(attr1) == nla_get_u32(attr2))
3286 return 0;
3287 }
3288
3289 return n_channels;
3290 }
3291
3292 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3293 {
3294 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3295 struct net_device *dev = info->user_ptr[1];
3296 struct cfg80211_scan_request *request;
3297 struct cfg80211_ssid *ssid;
3298 struct ieee80211_channel *channel;
3299 struct nlattr *attr;
3300 struct wiphy *wiphy;
3301 int err, tmp, n_ssids = 0, n_channels, i;
3302 enum ieee80211_band band;
3303 size_t ie_len;
3304
3305 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3306 return -EINVAL;
3307
3308 wiphy = &rdev->wiphy;
3309
3310 if (!rdev->ops->scan)
3311 return -EOPNOTSUPP;
3312
3313 if (rdev->scan_req)
3314 return -EBUSY;
3315
3316 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3317 n_channels = validate_scan_freqs(
3318 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3319 if (!n_channels)
3320 return -EINVAL;
3321 } else {
3322 n_channels = 0;
3323
3324 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3325 if (wiphy->bands[band])
3326 n_channels += wiphy->bands[band]->n_channels;
3327 }
3328
3329 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3330 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3331 n_ssids++;
3332
3333 if (n_ssids > wiphy->max_scan_ssids)
3334 return -EINVAL;
3335
3336 if (info->attrs[NL80211_ATTR_IE])
3337 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3338 else
3339 ie_len = 0;
3340
3341 if (ie_len > wiphy->max_scan_ie_len)
3342 return -EINVAL;
3343
3344 request = kzalloc(sizeof(*request)
3345 + sizeof(*ssid) * n_ssids
3346 + sizeof(channel) * n_channels
3347 + ie_len, GFP_KERNEL);
3348 if (!request)
3349 return -ENOMEM;
3350
3351 if (n_ssids)
3352 request->ssids = (void *)&request->channels[n_channels];
3353 request->n_ssids = n_ssids;
3354 if (ie_len) {
3355 if (request->ssids)
3356 request->ie = (void *)(request->ssids + n_ssids);
3357 else
3358 request->ie = (void *)(request->channels + n_channels);
3359 }
3360
3361 i = 0;
3362 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3363 /* user specified, bail out if channel not found */
3364 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3365 struct ieee80211_channel *chan;
3366
3367 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3368
3369 if (!chan) {
3370 err = -EINVAL;
3371 goto out_free;
3372 }
3373
3374 /* ignore disabled channels */
3375 if (chan->flags & IEEE80211_CHAN_DISABLED)
3376 continue;
3377
3378 request->channels[i] = chan;
3379 i++;
3380 }
3381 } else {
3382 /* all channels */
3383 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3384 int j;
3385 if (!wiphy->bands[band])
3386 continue;
3387 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3388 struct ieee80211_channel *chan;
3389
3390 chan = &wiphy->bands[band]->channels[j];
3391
3392 if (chan->flags & IEEE80211_CHAN_DISABLED)
3393 continue;
3394
3395 request->channels[i] = chan;
3396 i++;
3397 }
3398 }
3399 }
3400
3401 if (!i) {
3402 err = -EINVAL;
3403 goto out_free;
3404 }
3405
3406 request->n_channels = i;
3407
3408 i = 0;
3409 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3410 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3411 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3412 err = -EINVAL;
3413 goto out_free;
3414 }
3415 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3416 request->ssids[i].ssid_len = nla_len(attr);
3417 i++;
3418 }
3419 }
3420
3421 if (info->attrs[NL80211_ATTR_IE]) {
3422 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3423 memcpy((void *)request->ie,
3424 nla_data(info->attrs[NL80211_ATTR_IE]),
3425 request->ie_len);
3426 }
3427
3428 request->dev = dev;
3429 request->wiphy = &rdev->wiphy;
3430
3431 rdev->scan_req = request;
3432 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3433
3434 if (!err) {
3435 nl80211_send_scan_start(rdev, dev);
3436 dev_hold(dev);
3437 } else {
3438 out_free:
3439 rdev->scan_req = NULL;
3440 kfree(request);
3441 }
3442
3443 return err;
3444 }
3445
3446 static int nl80211_start_sched_scan(struct sk_buff *skb,
3447 struct genl_info *info)
3448 {
3449 struct cfg80211_sched_scan_request *request;
3450 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3451 struct net_device *dev = info->user_ptr[1];
3452 struct cfg80211_ssid *ssid;
3453 struct ieee80211_channel *channel;
3454 struct nlattr *attr;
3455 struct wiphy *wiphy;
3456 int err, tmp, n_ssids = 0, n_channels, i;
3457 u32 interval;
3458 enum ieee80211_band band;
3459 size_t ie_len;
3460
3461 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3462 !rdev->ops->sched_scan_start)
3463 return -EOPNOTSUPP;
3464
3465 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3466 return -EINVAL;
3467
3468 if (rdev->sched_scan_req)
3469 return -EINPROGRESS;
3470
3471 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3472 return -EINVAL;
3473
3474 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3475 if (interval == 0)
3476 return -EINVAL;
3477
3478 wiphy = &rdev->wiphy;
3479
3480 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3481 n_channels = validate_scan_freqs(
3482 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3483 if (!n_channels)
3484 return -EINVAL;
3485 } else {
3486 n_channels = 0;
3487
3488 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3489 if (wiphy->bands[band])
3490 n_channels += wiphy->bands[band]->n_channels;
3491 }
3492
3493 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3494 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3495 tmp)
3496 n_ssids++;
3497
3498 if (n_ssids > wiphy->max_scan_ssids)
3499 return -EINVAL;
3500
3501 if (info->attrs[NL80211_ATTR_IE])
3502 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3503 else
3504 ie_len = 0;
3505
3506 if (ie_len > wiphy->max_scan_ie_len)
3507 return -EINVAL;
3508
3509 request = kzalloc(sizeof(*request)
3510 + sizeof(*ssid) * n_ssids
3511 + sizeof(channel) * n_channels
3512 + ie_len, GFP_KERNEL);
3513 if (!request)
3514 return -ENOMEM;
3515
3516 if (n_ssids)
3517 request->ssids = (void *)&request->channels[n_channels];
3518 request->n_ssids = n_ssids;
3519 if (ie_len) {
3520 if (request->ssids)
3521 request->ie = (void *)(request->ssids + n_ssids);
3522 else
3523 request->ie = (void *)(request->channels + n_channels);
3524 }
3525
3526 i = 0;
3527 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3528 /* user specified, bail out if channel not found */
3529 nla_for_each_nested(attr,
3530 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3531 tmp) {
3532 struct ieee80211_channel *chan;
3533
3534 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3535
3536 if (!chan) {
3537 err = -EINVAL;
3538 goto out_free;
3539 }
3540
3541 /* ignore disabled channels */
3542 if (chan->flags & IEEE80211_CHAN_DISABLED)
3543 continue;
3544
3545 request->channels[i] = chan;
3546 i++;
3547 }
3548 } else {
3549 /* all channels */
3550 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3551 int j;
3552 if (!wiphy->bands[band])
3553 continue;
3554 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3555 struct ieee80211_channel *chan;
3556
3557 chan = &wiphy->bands[band]->channels[j];
3558
3559 if (chan->flags & IEEE80211_CHAN_DISABLED)
3560 continue;
3561
3562 request->channels[i] = chan;
3563 i++;
3564 }
3565 }
3566 }
3567
3568 if (!i) {
3569 err = -EINVAL;
3570 goto out_free;
3571 }
3572
3573 request->n_channels = i;
3574
3575 i = 0;
3576 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3577 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3578 tmp) {
3579 if (request->ssids[i].ssid_len >
3580 IEEE80211_MAX_SSID_LEN) {
3581 err = -EINVAL;
3582 goto out_free;
3583 }
3584 memcpy(request->ssids[i].ssid, nla_data(attr),
3585 nla_len(attr));
3586 request->ssids[i].ssid_len = 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 return err;
3614 }
3615
3616 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3617 struct genl_info *info)
3618 {
3619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3620
3621 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3622 !rdev->ops->sched_scan_stop)
3623 return -EOPNOTSUPP;
3624
3625 return __cfg80211_stop_sched_scan(rdev, false);
3626 }
3627
3628 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3629 struct cfg80211_registered_device *rdev,
3630 struct wireless_dev *wdev,
3631 struct cfg80211_internal_bss *intbss)
3632 {
3633 struct cfg80211_bss *res = &intbss->pub;
3634 void *hdr;
3635 struct nlattr *bss;
3636 int i;
3637
3638 ASSERT_WDEV_LOCK(wdev);
3639
3640 hdr = nl80211hdr_put(msg, pid, seq, flags,
3641 NL80211_CMD_NEW_SCAN_RESULTS);
3642 if (!hdr)
3643 return -1;
3644
3645 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3646 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3647
3648 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3649 if (!bss)
3650 goto nla_put_failure;
3651 if (!is_zero_ether_addr(res->bssid))
3652 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3653 if (res->information_elements && res->len_information_elements)
3654 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3655 res->len_information_elements,
3656 res->information_elements);
3657 if (res->beacon_ies && res->len_beacon_ies &&
3658 res->beacon_ies != res->information_elements)
3659 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3660 res->len_beacon_ies, res->beacon_ies);
3661 if (res->tsf)
3662 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3663 if (res->beacon_interval)
3664 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3665 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3666 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3667 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3668 jiffies_to_msecs(jiffies - intbss->ts));
3669
3670 switch (rdev->wiphy.signal_type) {
3671 case CFG80211_SIGNAL_TYPE_MBM:
3672 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3673 break;
3674 case CFG80211_SIGNAL_TYPE_UNSPEC:
3675 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3676 break;
3677 default:
3678 break;
3679 }
3680
3681 switch (wdev->iftype) {
3682 case NL80211_IFTYPE_P2P_CLIENT:
3683 case NL80211_IFTYPE_STATION:
3684 if (intbss == wdev->current_bss)
3685 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3686 NL80211_BSS_STATUS_ASSOCIATED);
3687 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3688 if (intbss != wdev->auth_bsses[i])
3689 continue;
3690 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3691 NL80211_BSS_STATUS_AUTHENTICATED);
3692 break;
3693 }
3694 break;
3695 case NL80211_IFTYPE_ADHOC:
3696 if (intbss == wdev->current_bss)
3697 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3698 NL80211_BSS_STATUS_IBSS_JOINED);
3699 break;
3700 default:
3701 break;
3702 }
3703
3704 nla_nest_end(msg, bss);
3705
3706 return genlmsg_end(msg, hdr);
3707
3708 nla_put_failure:
3709 genlmsg_cancel(msg, hdr);
3710 return -EMSGSIZE;
3711 }
3712
3713 static int nl80211_dump_scan(struct sk_buff *skb,
3714 struct netlink_callback *cb)
3715 {
3716 struct cfg80211_registered_device *rdev;
3717 struct net_device *dev;
3718 struct cfg80211_internal_bss *scan;
3719 struct wireless_dev *wdev;
3720 int start = cb->args[1], idx = 0;
3721 int err;
3722
3723 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3724 if (err)
3725 return err;
3726
3727 wdev = dev->ieee80211_ptr;
3728
3729 wdev_lock(wdev);
3730 spin_lock_bh(&rdev->bss_lock);
3731 cfg80211_bss_expire(rdev);
3732
3733 list_for_each_entry(scan, &rdev->bss_list, list) {
3734 if (++idx <= start)
3735 continue;
3736 if (nl80211_send_bss(skb,
3737 NETLINK_CB(cb->skb).pid,
3738 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3739 rdev, wdev, scan) < 0) {
3740 idx--;
3741 break;
3742 }
3743 }
3744
3745 spin_unlock_bh(&rdev->bss_lock);
3746 wdev_unlock(wdev);
3747
3748 cb->args[1] = idx;
3749 nl80211_finish_netdev_dump(rdev);
3750
3751 return skb->len;
3752 }
3753
3754 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3755 int flags, struct net_device *dev,
3756 struct survey_info *survey)
3757 {
3758 void *hdr;
3759 struct nlattr *infoattr;
3760
3761 /* Survey without a channel doesn't make sense */
3762 if (!survey->channel)
3763 return -EINVAL;
3764
3765 hdr = nl80211hdr_put(msg, pid, seq, flags,
3766 NL80211_CMD_NEW_SURVEY_RESULTS);
3767 if (!hdr)
3768 return -ENOMEM;
3769
3770 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3771
3772 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3773 if (!infoattr)
3774 goto nla_put_failure;
3775
3776 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3777 survey->channel->center_freq);
3778 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3779 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3780 survey->noise);
3781 if (survey->filled & SURVEY_INFO_IN_USE)
3782 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3783 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3784 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3785 survey->channel_time);
3786 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3787 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3788 survey->channel_time_busy);
3789 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3790 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3791 survey->channel_time_ext_busy);
3792 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3793 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3794 survey->channel_time_rx);
3795 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3796 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3797 survey->channel_time_tx);
3798
3799 nla_nest_end(msg, infoattr);
3800
3801 return genlmsg_end(msg, hdr);
3802
3803 nla_put_failure:
3804 genlmsg_cancel(msg, hdr);
3805 return -EMSGSIZE;
3806 }
3807
3808 static int nl80211_dump_survey(struct sk_buff *skb,
3809 struct netlink_callback *cb)
3810 {
3811 struct survey_info survey;
3812 struct cfg80211_registered_device *dev;
3813 struct net_device *netdev;
3814 int survey_idx = cb->args[1];
3815 int res;
3816
3817 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3818 if (res)
3819 return res;
3820
3821 if (!dev->ops->dump_survey) {
3822 res = -EOPNOTSUPP;
3823 goto out_err;
3824 }
3825
3826 while (1) {
3827 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3828 &survey);
3829 if (res == -ENOENT)
3830 break;
3831 if (res)
3832 goto out_err;
3833
3834 if (nl80211_send_survey(skb,
3835 NETLINK_CB(cb->skb).pid,
3836 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3837 netdev,
3838 &survey) < 0)
3839 goto out;
3840 survey_idx++;
3841 }
3842
3843 out:
3844 cb->args[1] = survey_idx;
3845 res = skb->len;
3846 out_err:
3847 nl80211_finish_netdev_dump(dev);
3848 return res;
3849 }
3850
3851 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3852 {
3853 return auth_type <= NL80211_AUTHTYPE_MAX;
3854 }
3855
3856 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3857 {
3858 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3859 NL80211_WPA_VERSION_2));
3860 }
3861
3862 static bool nl80211_valid_akm_suite(u32 akm)
3863 {
3864 return akm == WLAN_AKM_SUITE_8021X ||
3865 akm == WLAN_AKM_SUITE_PSK;
3866 }
3867
3868 static bool nl80211_valid_cipher_suite(u32 cipher)
3869 {
3870 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3871 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3872 cipher == WLAN_CIPHER_SUITE_TKIP ||
3873 cipher == WLAN_CIPHER_SUITE_CCMP ||
3874 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3875 }
3876
3877
3878 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3879 {
3880 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3881 struct net_device *dev = info->user_ptr[1];
3882 struct ieee80211_channel *chan;
3883 const u8 *bssid, *ssid, *ie = NULL;
3884 int err, ssid_len, ie_len = 0;
3885 enum nl80211_auth_type auth_type;
3886 struct key_parse key;
3887 bool local_state_change;
3888
3889 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3890 return -EINVAL;
3891
3892 if (!info->attrs[NL80211_ATTR_MAC])
3893 return -EINVAL;
3894
3895 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3896 return -EINVAL;
3897
3898 if (!info->attrs[NL80211_ATTR_SSID])
3899 return -EINVAL;
3900
3901 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3902 return -EINVAL;
3903
3904 err = nl80211_parse_key(info, &key);
3905 if (err)
3906 return err;
3907
3908 if (key.idx >= 0) {
3909 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3910 return -EINVAL;
3911 if (!key.p.key || !key.p.key_len)
3912 return -EINVAL;
3913 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3914 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3915 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3916 key.p.key_len != WLAN_KEY_LEN_WEP104))
3917 return -EINVAL;
3918 if (key.idx > 4)
3919 return -EINVAL;
3920 } else {
3921 key.p.key_len = 0;
3922 key.p.key = NULL;
3923 }
3924
3925 if (key.idx >= 0) {
3926 int i;
3927 bool ok = false;
3928 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3929 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3930 ok = true;
3931 break;
3932 }
3933 }
3934 if (!ok)
3935 return -EINVAL;
3936 }
3937
3938 if (!rdev->ops->auth)
3939 return -EOPNOTSUPP;
3940
3941 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3942 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3943 return -EOPNOTSUPP;
3944
3945 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3946 chan = ieee80211_get_channel(&rdev->wiphy,
3947 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3948 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3949 return -EINVAL;
3950
3951 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3952 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3953
3954 if (info->attrs[NL80211_ATTR_IE]) {
3955 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3956 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3957 }
3958
3959 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3960 if (!nl80211_valid_auth_type(auth_type))
3961 return -EINVAL;
3962
3963 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3964
3965 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3966 ssid, ssid_len, ie, ie_len,
3967 key.p.key, key.p.key_len, key.idx,
3968 local_state_change);
3969 }
3970
3971 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3972 struct genl_info *info,
3973 struct cfg80211_crypto_settings *settings,
3974 int cipher_limit)
3975 {
3976 memset(settings, 0, sizeof(*settings));
3977
3978 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3979
3980 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3981 u16 proto;
3982 proto = nla_get_u16(
3983 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3984 settings->control_port_ethertype = cpu_to_be16(proto);
3985 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3986 proto != ETH_P_PAE)
3987 return -EINVAL;
3988 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3989 settings->control_port_no_encrypt = true;
3990 } else
3991 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3992
3993 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3994 void *data;
3995 int len, i;
3996
3997 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3998 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3999 settings->n_ciphers_pairwise = len / sizeof(u32);
4000
4001 if (len % sizeof(u32))
4002 return -EINVAL;
4003
4004 if (settings->n_ciphers_pairwise > cipher_limit)
4005 return -EINVAL;
4006
4007 memcpy(settings->ciphers_pairwise, data, len);
4008
4009 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4010 if (!nl80211_valid_cipher_suite(
4011 settings->ciphers_pairwise[i]))
4012 return -EINVAL;
4013 }
4014
4015 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4016 settings->cipher_group =
4017 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4018 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4019 return -EINVAL;
4020 }
4021
4022 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4023 settings->wpa_versions =
4024 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4025 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4026 return -EINVAL;
4027 }
4028
4029 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4030 void *data;
4031 int len, i;
4032
4033 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4034 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4035 settings->n_akm_suites = len / sizeof(u32);
4036
4037 if (len % sizeof(u32))
4038 return -EINVAL;
4039
4040 memcpy(settings->akm_suites, data, len);
4041
4042 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4043 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4044 return -EINVAL;
4045 }
4046
4047 return 0;
4048 }
4049
4050 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4051 {
4052 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4053 struct net_device *dev = info->user_ptr[1];
4054 struct cfg80211_crypto_settings crypto;
4055 struct ieee80211_channel *chan;
4056 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4057 int err, ssid_len, ie_len = 0;
4058 bool use_mfp = false;
4059
4060 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4061 return -EINVAL;
4062
4063 if (!info->attrs[NL80211_ATTR_MAC] ||
4064 !info->attrs[NL80211_ATTR_SSID] ||
4065 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4066 return -EINVAL;
4067
4068 if (!rdev->ops->assoc)
4069 return -EOPNOTSUPP;
4070
4071 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4072 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4073 return -EOPNOTSUPP;
4074
4075 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4076
4077 chan = ieee80211_get_channel(&rdev->wiphy,
4078 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4079 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4080 return -EINVAL;
4081
4082 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4083 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4084
4085 if (info->attrs[NL80211_ATTR_IE]) {
4086 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4087 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4088 }
4089
4090 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4091 enum nl80211_mfp mfp =
4092 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4093 if (mfp == NL80211_MFP_REQUIRED)
4094 use_mfp = true;
4095 else if (mfp != NL80211_MFP_NO)
4096 return -EINVAL;
4097 }
4098
4099 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4100 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4101
4102 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4103 if (!err)
4104 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4105 ssid, ssid_len, ie, ie_len, use_mfp,
4106 &crypto);
4107
4108 return err;
4109 }
4110
4111 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4112 {
4113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4114 struct net_device *dev = info->user_ptr[1];
4115 const u8 *ie = NULL, *bssid;
4116 int ie_len = 0;
4117 u16 reason_code;
4118 bool local_state_change;
4119
4120 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4121 return -EINVAL;
4122
4123 if (!info->attrs[NL80211_ATTR_MAC])
4124 return -EINVAL;
4125
4126 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4127 return -EINVAL;
4128
4129 if (!rdev->ops->deauth)
4130 return -EOPNOTSUPP;
4131
4132 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4133 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4134 return -EOPNOTSUPP;
4135
4136 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4137
4138 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4139 if (reason_code == 0) {
4140 /* Reason Code 0 is reserved */
4141 return -EINVAL;
4142 }
4143
4144 if (info->attrs[NL80211_ATTR_IE]) {
4145 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4146 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4147 }
4148
4149 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4150
4151 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4152 local_state_change);
4153 }
4154
4155 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4156 {
4157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4158 struct net_device *dev = info->user_ptr[1];
4159 const u8 *ie = NULL, *bssid;
4160 int ie_len = 0;
4161 u16 reason_code;
4162 bool local_state_change;
4163
4164 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4165 return -EINVAL;
4166
4167 if (!info->attrs[NL80211_ATTR_MAC])
4168 return -EINVAL;
4169
4170 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4171 return -EINVAL;
4172
4173 if (!rdev->ops->disassoc)
4174 return -EOPNOTSUPP;
4175
4176 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4177 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4178 return -EOPNOTSUPP;
4179
4180 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4181
4182 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4183 if (reason_code == 0) {
4184 /* Reason Code 0 is reserved */
4185 return -EINVAL;
4186 }
4187
4188 if (info->attrs[NL80211_ATTR_IE]) {
4189 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4190 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4191 }
4192
4193 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4194
4195 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4196 local_state_change);
4197 }
4198
4199 static bool
4200 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4201 int mcast_rate[IEEE80211_NUM_BANDS],
4202 int rateval)
4203 {
4204 struct wiphy *wiphy = &rdev->wiphy;
4205 bool found = false;
4206 int band, i;
4207
4208 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4209 struct ieee80211_supported_band *sband;
4210
4211 sband = wiphy->bands[band];
4212 if (!sband)
4213 continue;
4214
4215 for (i = 0; i < sband->n_bitrates; i++) {
4216 if (sband->bitrates[i].bitrate == rateval) {
4217 mcast_rate[band] = i + 1;
4218 found = true;
4219 break;
4220 }
4221 }
4222 }
4223
4224 return found;
4225 }
4226
4227 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4228 {
4229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4230 struct net_device *dev = info->user_ptr[1];
4231 struct cfg80211_ibss_params ibss;
4232 struct wiphy *wiphy;
4233 struct cfg80211_cached_keys *connkeys = NULL;
4234 int err;
4235
4236 memset(&ibss, 0, sizeof(ibss));
4237
4238 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4239 return -EINVAL;
4240
4241 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4242 !info->attrs[NL80211_ATTR_SSID] ||
4243 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4244 return -EINVAL;
4245
4246 ibss.beacon_interval = 100;
4247
4248 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4249 ibss.beacon_interval =
4250 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4251 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4252 return -EINVAL;
4253 }
4254
4255 if (!rdev->ops->join_ibss)
4256 return -EOPNOTSUPP;
4257
4258 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4259 return -EOPNOTSUPP;
4260
4261 wiphy = &rdev->wiphy;
4262
4263 if (info->attrs[NL80211_ATTR_MAC])
4264 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4265 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4266 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4267
4268 if (info->attrs[NL80211_ATTR_IE]) {
4269 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4270 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4271 }
4272
4273 ibss.channel = ieee80211_get_channel(wiphy,
4274 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4275 if (!ibss.channel ||
4276 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4277 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4278 return -EINVAL;
4279
4280 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4281 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4282
4283 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4284 u8 *rates =
4285 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4286 int n_rates =
4287 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4288 struct ieee80211_supported_band *sband =
4289 wiphy->bands[ibss.channel->band];
4290 int i, j;
4291
4292 if (n_rates == 0)
4293 return -EINVAL;
4294
4295 for (i = 0; i < n_rates; i++) {
4296 int rate = (rates[i] & 0x7f) * 5;
4297 bool found = false;
4298
4299 for (j = 0; j < sband->n_bitrates; j++) {
4300 if (sband->bitrates[j].bitrate == rate) {
4301 found = true;
4302 ibss.basic_rates |= BIT(j);
4303 break;
4304 }
4305 }
4306 if (!found)
4307 return -EINVAL;
4308 }
4309 }
4310
4311 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4312 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4313 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4314 return -EINVAL;
4315
4316 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4317 connkeys = nl80211_parse_connkeys(rdev,
4318 info->attrs[NL80211_ATTR_KEYS]);
4319 if (IS_ERR(connkeys))
4320 return PTR_ERR(connkeys);
4321 }
4322
4323 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4324 if (err)
4325 kfree(connkeys);
4326 return err;
4327 }
4328
4329 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4330 {
4331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4332 struct net_device *dev = info->user_ptr[1];
4333
4334 if (!rdev->ops->leave_ibss)
4335 return -EOPNOTSUPP;
4336
4337 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4338 return -EOPNOTSUPP;
4339
4340 return cfg80211_leave_ibss(rdev, dev, false);
4341 }
4342
4343 #ifdef CONFIG_NL80211_TESTMODE
4344 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4345 .name = "testmode",
4346 };
4347
4348 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4349 {
4350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4351 int err;
4352
4353 if (!info->attrs[NL80211_ATTR_TESTDATA])
4354 return -EINVAL;
4355
4356 err = -EOPNOTSUPP;
4357 if (rdev->ops->testmode_cmd) {
4358 rdev->testmode_info = info;
4359 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4360 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4361 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4362 rdev->testmode_info = NULL;
4363 }
4364
4365 return err;
4366 }
4367
4368 static struct sk_buff *
4369 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4370 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4371 {
4372 struct sk_buff *skb;
4373 void *hdr;
4374 struct nlattr *data;
4375
4376 skb = nlmsg_new(approxlen + 100, gfp);
4377 if (!skb)
4378 return NULL;
4379
4380 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4381 if (!hdr) {
4382 kfree_skb(skb);
4383 return NULL;
4384 }
4385
4386 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4387 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4388
4389 ((void **)skb->cb)[0] = rdev;
4390 ((void **)skb->cb)[1] = hdr;
4391 ((void **)skb->cb)[2] = data;
4392
4393 return skb;
4394
4395 nla_put_failure:
4396 kfree_skb(skb);
4397 return NULL;
4398 }
4399
4400 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4401 int approxlen)
4402 {
4403 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4404
4405 if (WARN_ON(!rdev->testmode_info))
4406 return NULL;
4407
4408 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4409 rdev->testmode_info->snd_pid,
4410 rdev->testmode_info->snd_seq,
4411 GFP_KERNEL);
4412 }
4413 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4414
4415 int cfg80211_testmode_reply(struct sk_buff *skb)
4416 {
4417 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4418 void *hdr = ((void **)skb->cb)[1];
4419 struct nlattr *data = ((void **)skb->cb)[2];
4420
4421 if (WARN_ON(!rdev->testmode_info)) {
4422 kfree_skb(skb);
4423 return -EINVAL;
4424 }
4425
4426 nla_nest_end(skb, data);
4427 genlmsg_end(skb, hdr);
4428 return genlmsg_reply(skb, rdev->testmode_info);
4429 }
4430 EXPORT_SYMBOL(cfg80211_testmode_reply);
4431
4432 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4433 int approxlen, gfp_t gfp)
4434 {
4435 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4436
4437 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4438 }
4439 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4440
4441 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4442 {
4443 void *hdr = ((void **)skb->cb)[1];
4444 struct nlattr *data = ((void **)skb->cb)[2];
4445
4446 nla_nest_end(skb, data);
4447 genlmsg_end(skb, hdr);
4448 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4449 }
4450 EXPORT_SYMBOL(cfg80211_testmode_event);
4451 #endif
4452
4453 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4454 {
4455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4456 struct net_device *dev = info->user_ptr[1];
4457 struct cfg80211_connect_params connect;
4458 struct wiphy *wiphy;
4459 struct cfg80211_cached_keys *connkeys = NULL;
4460 int err;
4461
4462 memset(&connect, 0, sizeof(connect));
4463
4464 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4465 return -EINVAL;
4466
4467 if (!info->attrs[NL80211_ATTR_SSID] ||
4468 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4469 return -EINVAL;
4470
4471 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4472 connect.auth_type =
4473 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4474 if (!nl80211_valid_auth_type(connect.auth_type))
4475 return -EINVAL;
4476 } else
4477 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4478
4479 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4480
4481 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4482 NL80211_MAX_NR_CIPHER_SUITES);
4483 if (err)
4484 return err;
4485
4486 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4487 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4488 return -EOPNOTSUPP;
4489
4490 wiphy = &rdev->wiphy;
4491
4492 if (info->attrs[NL80211_ATTR_MAC])
4493 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4494 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4495 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4496
4497 if (info->attrs[NL80211_ATTR_IE]) {
4498 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4499 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4500 }
4501
4502 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4503 connect.channel =
4504 ieee80211_get_channel(wiphy,
4505 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4506 if (!connect.channel ||
4507 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4508 return -EINVAL;
4509 }
4510
4511 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4512 connkeys = nl80211_parse_connkeys(rdev,
4513 info->attrs[NL80211_ATTR_KEYS]);
4514 if (IS_ERR(connkeys))
4515 return PTR_ERR(connkeys);
4516 }
4517
4518 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4519 if (err)
4520 kfree(connkeys);
4521 return err;
4522 }
4523
4524 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4525 {
4526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4527 struct net_device *dev = info->user_ptr[1];
4528 u16 reason;
4529
4530 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4531 reason = WLAN_REASON_DEAUTH_LEAVING;
4532 else
4533 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4534
4535 if (reason == 0)
4536 return -EINVAL;
4537
4538 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4539 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4540 return -EOPNOTSUPP;
4541
4542 return cfg80211_disconnect(rdev, dev, reason, true);
4543 }
4544
4545 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4546 {
4547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4548 struct net *net;
4549 int err;
4550 u32 pid;
4551
4552 if (!info->attrs[NL80211_ATTR_PID])
4553 return -EINVAL;
4554
4555 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4556
4557 net = get_net_ns_by_pid(pid);
4558 if (IS_ERR(net))
4559 return PTR_ERR(net);
4560
4561 err = 0;
4562
4563 /* check if anything to do */
4564 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4565 err = cfg80211_switch_netns(rdev, net);
4566
4567 put_net(net);
4568 return err;
4569 }
4570
4571 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4572 {
4573 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4574 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4575 struct cfg80211_pmksa *pmksa) = NULL;
4576 struct net_device *dev = info->user_ptr[1];
4577 struct cfg80211_pmksa pmksa;
4578
4579 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4580
4581 if (!info->attrs[NL80211_ATTR_MAC])
4582 return -EINVAL;
4583
4584 if (!info->attrs[NL80211_ATTR_PMKID])
4585 return -EINVAL;
4586
4587 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4588 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4589
4590 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4591 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4592 return -EOPNOTSUPP;
4593
4594 switch (info->genlhdr->cmd) {
4595 case NL80211_CMD_SET_PMKSA:
4596 rdev_ops = rdev->ops->set_pmksa;
4597 break;
4598 case NL80211_CMD_DEL_PMKSA:
4599 rdev_ops = rdev->ops->del_pmksa;
4600 break;
4601 default:
4602 WARN_ON(1);
4603 break;
4604 }
4605
4606 if (!rdev_ops)
4607 return -EOPNOTSUPP;
4608
4609 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4610 }
4611
4612 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4613 {
4614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4615 struct net_device *dev = info->user_ptr[1];
4616
4617 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4618 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4619 return -EOPNOTSUPP;
4620
4621 if (!rdev->ops->flush_pmksa)
4622 return -EOPNOTSUPP;
4623
4624 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4625 }
4626
4627 static int nl80211_remain_on_channel(struct sk_buff *skb,
4628 struct genl_info *info)
4629 {
4630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4631 struct net_device *dev = info->user_ptr[1];
4632 struct ieee80211_channel *chan;
4633 struct sk_buff *msg;
4634 void *hdr;
4635 u64 cookie;
4636 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4637 u32 freq, duration;
4638 int err;
4639
4640 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4641 !info->attrs[NL80211_ATTR_DURATION])
4642 return -EINVAL;
4643
4644 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4645
4646 /*
4647 * We should be on that channel for at least one jiffie,
4648 * and more than 5 seconds seems excessive.
4649 */
4650 if (!duration || !msecs_to_jiffies(duration) ||
4651 duration > rdev->wiphy.max_remain_on_channel_duration)
4652 return -EINVAL;
4653
4654 if (!rdev->ops->remain_on_channel)
4655 return -EOPNOTSUPP;
4656
4657 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4658 channel_type = nla_get_u32(
4659 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4660 if (channel_type != NL80211_CHAN_NO_HT &&
4661 channel_type != NL80211_CHAN_HT20 &&
4662 channel_type != NL80211_CHAN_HT40PLUS &&
4663 channel_type != NL80211_CHAN_HT40MINUS)
4664 return -EINVAL;
4665 }
4666
4667 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4668 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4669 if (chan == NULL)
4670 return -EINVAL;
4671
4672 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4673 if (!msg)
4674 return -ENOMEM;
4675
4676 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4677 NL80211_CMD_REMAIN_ON_CHANNEL);
4678
4679 if (IS_ERR(hdr)) {
4680 err = PTR_ERR(hdr);
4681 goto free_msg;
4682 }
4683
4684 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4685 channel_type, duration, &cookie);
4686
4687 if (err)
4688 goto free_msg;
4689
4690 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4691
4692 genlmsg_end(msg, hdr);
4693
4694 return genlmsg_reply(msg, info);
4695
4696 nla_put_failure:
4697 err = -ENOBUFS;
4698 free_msg:
4699 nlmsg_free(msg);
4700 return err;
4701 }
4702
4703 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4704 struct genl_info *info)
4705 {
4706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4707 struct net_device *dev = info->user_ptr[1];
4708 u64 cookie;
4709
4710 if (!info->attrs[NL80211_ATTR_COOKIE])
4711 return -EINVAL;
4712
4713 if (!rdev->ops->cancel_remain_on_channel)
4714 return -EOPNOTSUPP;
4715
4716 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4717
4718 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4719 }
4720
4721 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4722 u8 *rates, u8 rates_len)
4723 {
4724 u8 i;
4725 u32 mask = 0;
4726
4727 for (i = 0; i < rates_len; i++) {
4728 int rate = (rates[i] & 0x7f) * 5;
4729 int ridx;
4730 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4731 struct ieee80211_rate *srate =
4732 &sband->bitrates[ridx];
4733 if (rate == srate->bitrate) {
4734 mask |= 1 << ridx;
4735 break;
4736 }
4737 }
4738 if (ridx == sband->n_bitrates)
4739 return 0; /* rate not found */
4740 }
4741
4742 return mask;
4743 }
4744
4745 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4746 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4747 .len = NL80211_MAX_SUPP_RATES },
4748 };
4749
4750 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4751 struct genl_info *info)
4752 {
4753 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4755 struct cfg80211_bitrate_mask mask;
4756 int rem, i;
4757 struct net_device *dev = info->user_ptr[1];
4758 struct nlattr *tx_rates;
4759 struct ieee80211_supported_band *sband;
4760
4761 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4762 return -EINVAL;
4763
4764 if (!rdev->ops->set_bitrate_mask)
4765 return -EOPNOTSUPP;
4766
4767 memset(&mask, 0, sizeof(mask));
4768 /* Default to all rates enabled */
4769 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4770 sband = rdev->wiphy.bands[i];
4771 mask.control[i].legacy =
4772 sband ? (1 << sband->n_bitrates) - 1 : 0;
4773 }
4774
4775 /*
4776 * The nested attribute uses enum nl80211_band as the index. This maps
4777 * directly to the enum ieee80211_band values used in cfg80211.
4778 */
4779 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4780 {
4781 enum ieee80211_band band = nla_type(tx_rates);
4782 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4783 return -EINVAL;
4784 sband = rdev->wiphy.bands[band];
4785 if (sband == NULL)
4786 return -EINVAL;
4787 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4788 nla_len(tx_rates), nl80211_txattr_policy);
4789 if (tb[NL80211_TXRATE_LEGACY]) {
4790 mask.control[band].legacy = rateset_to_mask(
4791 sband,
4792 nla_data(tb[NL80211_TXRATE_LEGACY]),
4793 nla_len(tb[NL80211_TXRATE_LEGACY]));
4794 if (mask.control[band].legacy == 0)
4795 return -EINVAL;
4796 }
4797 }
4798
4799 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4800 }
4801
4802 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4803 {
4804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4805 struct net_device *dev = info->user_ptr[1];
4806 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4807
4808 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4809 return -EINVAL;
4810
4811 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4812 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4813
4814 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4815 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4816 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4817 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4818 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4819 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4820 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4821 return -EOPNOTSUPP;
4822
4823 /* not much point in registering if we can't reply */
4824 if (!rdev->ops->mgmt_tx)
4825 return -EOPNOTSUPP;
4826
4827 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4828 frame_type,
4829 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4830 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4831 }
4832
4833 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4834 {
4835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4836 struct net_device *dev = info->user_ptr[1];
4837 struct ieee80211_channel *chan;
4838 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4839 bool channel_type_valid = false;
4840 u32 freq;
4841 int err;
4842 void *hdr;
4843 u64 cookie;
4844 struct sk_buff *msg;
4845 unsigned int wait = 0;
4846 bool offchan;
4847
4848 if (!info->attrs[NL80211_ATTR_FRAME] ||
4849 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4850 return -EINVAL;
4851
4852 if (!rdev->ops->mgmt_tx)
4853 return -EOPNOTSUPP;
4854
4855 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4856 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4857 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4858 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4859 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4860 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4861 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4862 return -EOPNOTSUPP;
4863
4864 if (info->attrs[NL80211_ATTR_DURATION]) {
4865 if (!rdev->ops->mgmt_tx_cancel_wait)
4866 return -EINVAL;
4867 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4868 }
4869
4870 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4871 channel_type = nla_get_u32(
4872 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4873 if (channel_type != NL80211_CHAN_NO_HT &&
4874 channel_type != NL80211_CHAN_HT20 &&
4875 channel_type != NL80211_CHAN_HT40PLUS &&
4876 channel_type != NL80211_CHAN_HT40MINUS)
4877 return -EINVAL;
4878 channel_type_valid = true;
4879 }
4880
4881 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4882
4883 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4884 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4885 if (chan == NULL)
4886 return -EINVAL;
4887
4888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4889 if (!msg)
4890 return -ENOMEM;
4891
4892 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4893 NL80211_CMD_FRAME);
4894
4895 if (IS_ERR(hdr)) {
4896 err = PTR_ERR(hdr);
4897 goto free_msg;
4898 }
4899 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4900 channel_type_valid, wait,
4901 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4902 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4903 &cookie);
4904 if (err)
4905 goto free_msg;
4906
4907 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4908
4909 genlmsg_end(msg, hdr);
4910 return genlmsg_reply(msg, info);
4911
4912 nla_put_failure:
4913 err = -ENOBUFS;
4914 free_msg:
4915 nlmsg_free(msg);
4916 return err;
4917 }
4918
4919 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4920 {
4921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4922 struct net_device *dev = info->user_ptr[1];
4923 u64 cookie;
4924
4925 if (!info->attrs[NL80211_ATTR_COOKIE])
4926 return -EINVAL;
4927
4928 if (!rdev->ops->mgmt_tx_cancel_wait)
4929 return -EOPNOTSUPP;
4930
4931 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4932 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4933 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4934 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4935 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4936 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4937 return -EOPNOTSUPP;
4938
4939 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4940
4941 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4942 }
4943
4944 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4945 {
4946 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4947 struct wireless_dev *wdev;
4948 struct net_device *dev = info->user_ptr[1];
4949 u8 ps_state;
4950 bool state;
4951 int err;
4952
4953 if (!info->attrs[NL80211_ATTR_PS_STATE])
4954 return -EINVAL;
4955
4956 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4957
4958 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4959 return -EINVAL;
4960
4961 wdev = dev->ieee80211_ptr;
4962
4963 if (!rdev->ops->set_power_mgmt)
4964 return -EOPNOTSUPP;
4965
4966 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4967
4968 if (state == wdev->ps)
4969 return 0;
4970
4971 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4972 wdev->ps_timeout);
4973 if (!err)
4974 wdev->ps = state;
4975 return err;
4976 }
4977
4978 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4979 {
4980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4981 enum nl80211_ps_state ps_state;
4982 struct wireless_dev *wdev;
4983 struct net_device *dev = info->user_ptr[1];
4984 struct sk_buff *msg;
4985 void *hdr;
4986 int err;
4987
4988 wdev = dev->ieee80211_ptr;
4989
4990 if (!rdev->ops->set_power_mgmt)
4991 return -EOPNOTSUPP;
4992
4993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4994 if (!msg)
4995 return -ENOMEM;
4996
4997 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4998 NL80211_CMD_GET_POWER_SAVE);
4999 if (!hdr) {
5000 err = -ENOBUFS;
5001 goto free_msg;
5002 }
5003
5004 if (wdev->ps)
5005 ps_state = NL80211_PS_ENABLED;
5006 else
5007 ps_state = NL80211_PS_DISABLED;
5008
5009 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5010
5011 genlmsg_end(msg, hdr);
5012 return genlmsg_reply(msg, info);
5013
5014 nla_put_failure:
5015 err = -ENOBUFS;
5016 free_msg:
5017 nlmsg_free(msg);
5018 return err;
5019 }
5020
5021 static struct nla_policy
5022 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5023 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5024 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5025 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5026 };
5027
5028 static int nl80211_set_cqm_rssi(struct genl_info *info,
5029 s32 threshold, u32 hysteresis)
5030 {
5031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5032 struct wireless_dev *wdev;
5033 struct net_device *dev = info->user_ptr[1];
5034
5035 if (threshold > 0)
5036 return -EINVAL;
5037
5038 wdev = dev->ieee80211_ptr;
5039
5040 if (!rdev->ops->set_cqm_rssi_config)
5041 return -EOPNOTSUPP;
5042
5043 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5044 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5045 return -EOPNOTSUPP;
5046
5047 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5048 threshold, hysteresis);
5049 }
5050
5051 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5052 {
5053 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5054 struct nlattr *cqm;
5055 int err;
5056
5057 cqm = info->attrs[NL80211_ATTR_CQM];
5058 if (!cqm) {
5059 err = -EINVAL;
5060 goto out;
5061 }
5062
5063 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5064 nl80211_attr_cqm_policy);
5065 if (err)
5066 goto out;
5067
5068 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5069 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5070 s32 threshold;
5071 u32 hysteresis;
5072 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5073 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5074 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5075 } else
5076 err = -EINVAL;
5077
5078 out:
5079 return err;
5080 }
5081
5082 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5083 {
5084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5085 struct net_device *dev = info->user_ptr[1];
5086 struct mesh_config cfg;
5087 struct mesh_setup setup;
5088 int err;
5089
5090 /* start with default */
5091 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5092 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5093
5094 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5095 /* and parse parameters if given */
5096 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5097 if (err)
5098 return err;
5099 }
5100
5101 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5102 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5103 return -EINVAL;
5104
5105 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5106 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5107
5108 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5109 /* parse additional setup parameters if given */
5110 err = nl80211_parse_mesh_setup(info, &setup);
5111 if (err)
5112 return err;
5113 }
5114
5115 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5116 }
5117
5118 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5119 {
5120 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5121 struct net_device *dev = info->user_ptr[1];
5122
5123 return cfg80211_leave_mesh(rdev, dev);
5124 }
5125
5126 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5127 {
5128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5129 struct sk_buff *msg;
5130 void *hdr;
5131
5132 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5133 return -EOPNOTSUPP;
5134
5135 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5136 if (!msg)
5137 return -ENOMEM;
5138
5139 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5140 NL80211_CMD_GET_WOWLAN);
5141 if (!hdr)
5142 goto nla_put_failure;
5143
5144 if (rdev->wowlan) {
5145 struct nlattr *nl_wowlan;
5146
5147 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5148 if (!nl_wowlan)
5149 goto nla_put_failure;
5150
5151 if (rdev->wowlan->any)
5152 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5153 if (rdev->wowlan->disconnect)
5154 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5155 if (rdev->wowlan->magic_pkt)
5156 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5157 if (rdev->wowlan->n_patterns) {
5158 struct nlattr *nl_pats, *nl_pat;
5159 int i, pat_len;
5160
5161 nl_pats = nla_nest_start(msg,
5162 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5163 if (!nl_pats)
5164 goto nla_put_failure;
5165
5166 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5167 nl_pat = nla_nest_start(msg, i + 1);
5168 if (!nl_pat)
5169 goto nla_put_failure;
5170 pat_len = rdev->wowlan->patterns[i].pattern_len;
5171 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5172 DIV_ROUND_UP(pat_len, 8),
5173 rdev->wowlan->patterns[i].mask);
5174 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5175 pat_len,
5176 rdev->wowlan->patterns[i].pattern);
5177 nla_nest_end(msg, nl_pat);
5178 }
5179 nla_nest_end(msg, nl_pats);
5180 }
5181
5182 nla_nest_end(msg, nl_wowlan);
5183 }
5184
5185 genlmsg_end(msg, hdr);
5186 return genlmsg_reply(msg, info);
5187
5188 nla_put_failure:
5189 nlmsg_free(msg);
5190 return -ENOBUFS;
5191 }
5192
5193 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5194 {
5195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5196 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5197 struct cfg80211_wowlan no_triggers = {};
5198 struct cfg80211_wowlan new_triggers = {};
5199 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5200 int err, i;
5201
5202 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5203 return -EOPNOTSUPP;
5204
5205 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5206 goto no_triggers;
5207
5208 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5209 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5210 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5211 nl80211_wowlan_policy);
5212 if (err)
5213 return err;
5214
5215 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5216 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5217 return -EINVAL;
5218 new_triggers.any = true;
5219 }
5220
5221 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5222 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5223 return -EINVAL;
5224 new_triggers.disconnect = true;
5225 }
5226
5227 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5228 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5229 return -EINVAL;
5230 new_triggers.magic_pkt = true;
5231 }
5232
5233 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5234 struct nlattr *pat;
5235 int n_patterns = 0;
5236 int rem, pat_len, mask_len;
5237 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5238
5239 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5240 rem)
5241 n_patterns++;
5242 if (n_patterns > wowlan->n_patterns)
5243 return -EINVAL;
5244
5245 new_triggers.patterns = kcalloc(n_patterns,
5246 sizeof(new_triggers.patterns[0]),
5247 GFP_KERNEL);
5248 if (!new_triggers.patterns)
5249 return -ENOMEM;
5250
5251 new_triggers.n_patterns = n_patterns;
5252 i = 0;
5253
5254 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5255 rem) {
5256 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5257 nla_data(pat), nla_len(pat), NULL);
5258 err = -EINVAL;
5259 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5260 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5261 goto error;
5262 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5263 mask_len = DIV_ROUND_UP(pat_len, 8);
5264 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5265 mask_len)
5266 goto error;
5267 if (pat_len > wowlan->pattern_max_len ||
5268 pat_len < wowlan->pattern_min_len)
5269 goto error;
5270
5271 new_triggers.patterns[i].mask =
5272 kmalloc(mask_len + pat_len, GFP_KERNEL);
5273 if (!new_triggers.patterns[i].mask) {
5274 err = -ENOMEM;
5275 goto error;
5276 }
5277 new_triggers.patterns[i].pattern =
5278 new_triggers.patterns[i].mask + mask_len;
5279 memcpy(new_triggers.patterns[i].mask,
5280 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5281 mask_len);
5282 new_triggers.patterns[i].pattern_len = pat_len;
5283 memcpy(new_triggers.patterns[i].pattern,
5284 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5285 pat_len);
5286 i++;
5287 }
5288 }
5289
5290 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5291 struct cfg80211_wowlan *ntrig;
5292 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5293 GFP_KERNEL);
5294 if (!ntrig) {
5295 err = -ENOMEM;
5296 goto error;
5297 }
5298 cfg80211_rdev_free_wowlan(rdev);
5299 rdev->wowlan = ntrig;
5300 } else {
5301 no_triggers:
5302 cfg80211_rdev_free_wowlan(rdev);
5303 rdev->wowlan = NULL;
5304 }
5305
5306 return 0;
5307 error:
5308 for (i = 0; i < new_triggers.n_patterns; i++)
5309 kfree(new_triggers.patterns[i].mask);
5310 kfree(new_triggers.patterns);
5311 return err;
5312 }
5313
5314 #define NL80211_FLAG_NEED_WIPHY 0x01
5315 #define NL80211_FLAG_NEED_NETDEV 0x02
5316 #define NL80211_FLAG_NEED_RTNL 0x04
5317 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5318 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5319 NL80211_FLAG_CHECK_NETDEV_UP)
5320
5321 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5322 struct genl_info *info)
5323 {
5324 struct cfg80211_registered_device *rdev;
5325 struct net_device *dev;
5326 int err;
5327 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5328
5329 if (rtnl)
5330 rtnl_lock();
5331
5332 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5333 rdev = cfg80211_get_dev_from_info(info);
5334 if (IS_ERR(rdev)) {
5335 if (rtnl)
5336 rtnl_unlock();
5337 return PTR_ERR(rdev);
5338 }
5339 info->user_ptr[0] = rdev;
5340 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5341 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5342 if (err) {
5343 if (rtnl)
5344 rtnl_unlock();
5345 return err;
5346 }
5347 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5348 !netif_running(dev)) {
5349 cfg80211_unlock_rdev(rdev);
5350 dev_put(dev);
5351 if (rtnl)
5352 rtnl_unlock();
5353 return -ENETDOWN;
5354 }
5355 info->user_ptr[0] = rdev;
5356 info->user_ptr[1] = dev;
5357 }
5358
5359 return 0;
5360 }
5361
5362 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5363 struct genl_info *info)
5364 {
5365 if (info->user_ptr[0])
5366 cfg80211_unlock_rdev(info->user_ptr[0]);
5367 if (info->user_ptr[1])
5368 dev_put(info->user_ptr[1]);
5369 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5370 rtnl_unlock();
5371 }
5372
5373 static struct genl_ops nl80211_ops[] = {
5374 {
5375 .cmd = NL80211_CMD_GET_WIPHY,
5376 .doit = nl80211_get_wiphy,
5377 .dumpit = nl80211_dump_wiphy,
5378 .policy = nl80211_policy,
5379 /* can be retrieved by unprivileged users */
5380 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5381 },
5382 {
5383 .cmd = NL80211_CMD_SET_WIPHY,
5384 .doit = nl80211_set_wiphy,
5385 .policy = nl80211_policy,
5386 .flags = GENL_ADMIN_PERM,
5387 .internal_flags = NL80211_FLAG_NEED_RTNL,
5388 },
5389 {
5390 .cmd = NL80211_CMD_GET_INTERFACE,
5391 .doit = nl80211_get_interface,
5392 .dumpit = nl80211_dump_interface,
5393 .policy = nl80211_policy,
5394 /* can be retrieved by unprivileged users */
5395 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5396 },
5397 {
5398 .cmd = NL80211_CMD_SET_INTERFACE,
5399 .doit = nl80211_set_interface,
5400 .policy = nl80211_policy,
5401 .flags = GENL_ADMIN_PERM,
5402 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5403 NL80211_FLAG_NEED_RTNL,
5404 },
5405 {
5406 .cmd = NL80211_CMD_NEW_INTERFACE,
5407 .doit = nl80211_new_interface,
5408 .policy = nl80211_policy,
5409 .flags = GENL_ADMIN_PERM,
5410 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5411 NL80211_FLAG_NEED_RTNL,
5412 },
5413 {
5414 .cmd = NL80211_CMD_DEL_INTERFACE,
5415 .doit = nl80211_del_interface,
5416 .policy = nl80211_policy,
5417 .flags = GENL_ADMIN_PERM,
5418 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5419 NL80211_FLAG_NEED_RTNL,
5420 },
5421 {
5422 .cmd = NL80211_CMD_GET_KEY,
5423 .doit = nl80211_get_key,
5424 .policy = nl80211_policy,
5425 .flags = GENL_ADMIN_PERM,
5426 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5427 NL80211_FLAG_NEED_RTNL,
5428 },
5429 {
5430 .cmd = NL80211_CMD_SET_KEY,
5431 .doit = nl80211_set_key,
5432 .policy = nl80211_policy,
5433 .flags = GENL_ADMIN_PERM,
5434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5435 NL80211_FLAG_NEED_RTNL,
5436 },
5437 {
5438 .cmd = NL80211_CMD_NEW_KEY,
5439 .doit = nl80211_new_key,
5440 .policy = nl80211_policy,
5441 .flags = GENL_ADMIN_PERM,
5442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5443 NL80211_FLAG_NEED_RTNL,
5444 },
5445 {
5446 .cmd = NL80211_CMD_DEL_KEY,
5447 .doit = nl80211_del_key,
5448 .policy = nl80211_policy,
5449 .flags = GENL_ADMIN_PERM,
5450 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5451 NL80211_FLAG_NEED_RTNL,
5452 },
5453 {
5454 .cmd = NL80211_CMD_SET_BEACON,
5455 .policy = nl80211_policy,
5456 .flags = GENL_ADMIN_PERM,
5457 .doit = nl80211_addset_beacon,
5458 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5459 NL80211_FLAG_NEED_RTNL,
5460 },
5461 {
5462 .cmd = NL80211_CMD_NEW_BEACON,
5463 .policy = nl80211_policy,
5464 .flags = GENL_ADMIN_PERM,
5465 .doit = nl80211_addset_beacon,
5466 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5467 NL80211_FLAG_NEED_RTNL,
5468 },
5469 {
5470 .cmd = NL80211_CMD_DEL_BEACON,
5471 .policy = nl80211_policy,
5472 .flags = GENL_ADMIN_PERM,
5473 .doit = nl80211_del_beacon,
5474 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5475 NL80211_FLAG_NEED_RTNL,
5476 },
5477 {
5478 .cmd = NL80211_CMD_GET_STATION,
5479 .doit = nl80211_get_station,
5480 .dumpit = nl80211_dump_station,
5481 .policy = nl80211_policy,
5482 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5483 NL80211_FLAG_NEED_RTNL,
5484 },
5485 {
5486 .cmd = NL80211_CMD_SET_STATION,
5487 .doit = nl80211_set_station,
5488 .policy = nl80211_policy,
5489 .flags = GENL_ADMIN_PERM,
5490 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5491 NL80211_FLAG_NEED_RTNL,
5492 },
5493 {
5494 .cmd = NL80211_CMD_NEW_STATION,
5495 .doit = nl80211_new_station,
5496 .policy = nl80211_policy,
5497 .flags = GENL_ADMIN_PERM,
5498 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5499 NL80211_FLAG_NEED_RTNL,
5500 },
5501 {
5502 .cmd = NL80211_CMD_DEL_STATION,
5503 .doit = nl80211_del_station,
5504 .policy = nl80211_policy,
5505 .flags = GENL_ADMIN_PERM,
5506 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5507 NL80211_FLAG_NEED_RTNL,
5508 },
5509 {
5510 .cmd = NL80211_CMD_GET_MPATH,
5511 .doit = nl80211_get_mpath,
5512 .dumpit = nl80211_dump_mpath,
5513 .policy = nl80211_policy,
5514 .flags = GENL_ADMIN_PERM,
5515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5516 NL80211_FLAG_NEED_RTNL,
5517 },
5518 {
5519 .cmd = NL80211_CMD_SET_MPATH,
5520 .doit = nl80211_set_mpath,
5521 .policy = nl80211_policy,
5522 .flags = GENL_ADMIN_PERM,
5523 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5524 NL80211_FLAG_NEED_RTNL,
5525 },
5526 {
5527 .cmd = NL80211_CMD_NEW_MPATH,
5528 .doit = nl80211_new_mpath,
5529 .policy = nl80211_policy,
5530 .flags = GENL_ADMIN_PERM,
5531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5532 NL80211_FLAG_NEED_RTNL,
5533 },
5534 {
5535 .cmd = NL80211_CMD_DEL_MPATH,
5536 .doit = nl80211_del_mpath,
5537 .policy = nl80211_policy,
5538 .flags = GENL_ADMIN_PERM,
5539 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5540 NL80211_FLAG_NEED_RTNL,
5541 },
5542 {
5543 .cmd = NL80211_CMD_SET_BSS,
5544 .doit = nl80211_set_bss,
5545 .policy = nl80211_policy,
5546 .flags = GENL_ADMIN_PERM,
5547 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5548 NL80211_FLAG_NEED_RTNL,
5549 },
5550 {
5551 .cmd = NL80211_CMD_GET_REG,
5552 .doit = nl80211_get_reg,
5553 .policy = nl80211_policy,
5554 /* can be retrieved by unprivileged users */
5555 },
5556 {
5557 .cmd = NL80211_CMD_SET_REG,
5558 .doit = nl80211_set_reg,
5559 .policy = nl80211_policy,
5560 .flags = GENL_ADMIN_PERM,
5561 },
5562 {
5563 .cmd = NL80211_CMD_REQ_SET_REG,
5564 .doit = nl80211_req_set_reg,
5565 .policy = nl80211_policy,
5566 .flags = GENL_ADMIN_PERM,
5567 },
5568 {
5569 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5570 .doit = nl80211_get_mesh_config,
5571 .policy = nl80211_policy,
5572 /* can be retrieved by unprivileged users */
5573 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5574 NL80211_FLAG_NEED_RTNL,
5575 },
5576 {
5577 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5578 .doit = nl80211_update_mesh_config,
5579 .policy = nl80211_policy,
5580 .flags = GENL_ADMIN_PERM,
5581 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5582 NL80211_FLAG_NEED_RTNL,
5583 },
5584 {
5585 .cmd = NL80211_CMD_TRIGGER_SCAN,
5586 .doit = nl80211_trigger_scan,
5587 .policy = nl80211_policy,
5588 .flags = GENL_ADMIN_PERM,
5589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5590 NL80211_FLAG_NEED_RTNL,
5591 },
5592 {
5593 .cmd = NL80211_CMD_GET_SCAN,
5594 .policy = nl80211_policy,
5595 .dumpit = nl80211_dump_scan,
5596 },
5597 {
5598 .cmd = NL80211_CMD_START_SCHED_SCAN,
5599 .doit = nl80211_start_sched_scan,
5600 .policy = nl80211_policy,
5601 .flags = GENL_ADMIN_PERM,
5602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5603 NL80211_FLAG_NEED_RTNL,
5604 },
5605 {
5606 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5607 .doit = nl80211_stop_sched_scan,
5608 .policy = nl80211_policy,
5609 .flags = GENL_ADMIN_PERM,
5610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5611 NL80211_FLAG_NEED_RTNL,
5612 },
5613 {
5614 .cmd = NL80211_CMD_AUTHENTICATE,
5615 .doit = nl80211_authenticate,
5616 .policy = nl80211_policy,
5617 .flags = GENL_ADMIN_PERM,
5618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5619 NL80211_FLAG_NEED_RTNL,
5620 },
5621 {
5622 .cmd = NL80211_CMD_ASSOCIATE,
5623 .doit = nl80211_associate,
5624 .policy = nl80211_policy,
5625 .flags = GENL_ADMIN_PERM,
5626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5627 NL80211_FLAG_NEED_RTNL,
5628 },
5629 {
5630 .cmd = NL80211_CMD_DEAUTHENTICATE,
5631 .doit = nl80211_deauthenticate,
5632 .policy = nl80211_policy,
5633 .flags = GENL_ADMIN_PERM,
5634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5635 NL80211_FLAG_NEED_RTNL,
5636 },
5637 {
5638 .cmd = NL80211_CMD_DISASSOCIATE,
5639 .doit = nl80211_disassociate,
5640 .policy = nl80211_policy,
5641 .flags = GENL_ADMIN_PERM,
5642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5643 NL80211_FLAG_NEED_RTNL,
5644 },
5645 {
5646 .cmd = NL80211_CMD_JOIN_IBSS,
5647 .doit = nl80211_join_ibss,
5648 .policy = nl80211_policy,
5649 .flags = GENL_ADMIN_PERM,
5650 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5651 NL80211_FLAG_NEED_RTNL,
5652 },
5653 {
5654 .cmd = NL80211_CMD_LEAVE_IBSS,
5655 .doit = nl80211_leave_ibss,
5656 .policy = nl80211_policy,
5657 .flags = GENL_ADMIN_PERM,
5658 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5659 NL80211_FLAG_NEED_RTNL,
5660 },
5661 #ifdef CONFIG_NL80211_TESTMODE
5662 {
5663 .cmd = NL80211_CMD_TESTMODE,
5664 .doit = nl80211_testmode_do,
5665 .policy = nl80211_policy,
5666 .flags = GENL_ADMIN_PERM,
5667 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5668 NL80211_FLAG_NEED_RTNL,
5669 },
5670 #endif
5671 {
5672 .cmd = NL80211_CMD_CONNECT,
5673 .doit = nl80211_connect,
5674 .policy = nl80211_policy,
5675 .flags = GENL_ADMIN_PERM,
5676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5677 NL80211_FLAG_NEED_RTNL,
5678 },
5679 {
5680 .cmd = NL80211_CMD_DISCONNECT,
5681 .doit = nl80211_disconnect,
5682 .policy = nl80211_policy,
5683 .flags = GENL_ADMIN_PERM,
5684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5685 NL80211_FLAG_NEED_RTNL,
5686 },
5687 {
5688 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5689 .doit = nl80211_wiphy_netns,
5690 .policy = nl80211_policy,
5691 .flags = GENL_ADMIN_PERM,
5692 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5693 NL80211_FLAG_NEED_RTNL,
5694 },
5695 {
5696 .cmd = NL80211_CMD_GET_SURVEY,
5697 .policy = nl80211_policy,
5698 .dumpit = nl80211_dump_survey,
5699 },
5700 {
5701 .cmd = NL80211_CMD_SET_PMKSA,
5702 .doit = nl80211_setdel_pmksa,
5703 .policy = nl80211_policy,
5704 .flags = GENL_ADMIN_PERM,
5705 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5706 NL80211_FLAG_NEED_RTNL,
5707 },
5708 {
5709 .cmd = NL80211_CMD_DEL_PMKSA,
5710 .doit = nl80211_setdel_pmksa,
5711 .policy = nl80211_policy,
5712 .flags = GENL_ADMIN_PERM,
5713 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5714 NL80211_FLAG_NEED_RTNL,
5715 },
5716 {
5717 .cmd = NL80211_CMD_FLUSH_PMKSA,
5718 .doit = nl80211_flush_pmksa,
5719 .policy = nl80211_policy,
5720 .flags = GENL_ADMIN_PERM,
5721 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5722 NL80211_FLAG_NEED_RTNL,
5723 },
5724 {
5725 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5726 .doit = nl80211_remain_on_channel,
5727 .policy = nl80211_policy,
5728 .flags = GENL_ADMIN_PERM,
5729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5730 NL80211_FLAG_NEED_RTNL,
5731 },
5732 {
5733 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5734 .doit = nl80211_cancel_remain_on_channel,
5735 .policy = nl80211_policy,
5736 .flags = GENL_ADMIN_PERM,
5737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5738 NL80211_FLAG_NEED_RTNL,
5739 },
5740 {
5741 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5742 .doit = nl80211_set_tx_bitrate_mask,
5743 .policy = nl80211_policy,
5744 .flags = GENL_ADMIN_PERM,
5745 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5746 NL80211_FLAG_NEED_RTNL,
5747 },
5748 {
5749 .cmd = NL80211_CMD_REGISTER_FRAME,
5750 .doit = nl80211_register_mgmt,
5751 .policy = nl80211_policy,
5752 .flags = GENL_ADMIN_PERM,
5753 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5754 NL80211_FLAG_NEED_RTNL,
5755 },
5756 {
5757 .cmd = NL80211_CMD_FRAME,
5758 .doit = nl80211_tx_mgmt,
5759 .policy = nl80211_policy,
5760 .flags = GENL_ADMIN_PERM,
5761 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5762 NL80211_FLAG_NEED_RTNL,
5763 },
5764 {
5765 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5766 .doit = nl80211_tx_mgmt_cancel_wait,
5767 .policy = nl80211_policy,
5768 .flags = GENL_ADMIN_PERM,
5769 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5770 NL80211_FLAG_NEED_RTNL,
5771 },
5772 {
5773 .cmd = NL80211_CMD_SET_POWER_SAVE,
5774 .doit = nl80211_set_power_save,
5775 .policy = nl80211_policy,
5776 .flags = GENL_ADMIN_PERM,
5777 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5778 NL80211_FLAG_NEED_RTNL,
5779 },
5780 {
5781 .cmd = NL80211_CMD_GET_POWER_SAVE,
5782 .doit = nl80211_get_power_save,
5783 .policy = nl80211_policy,
5784 /* can be retrieved by unprivileged users */
5785 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5786 NL80211_FLAG_NEED_RTNL,
5787 },
5788 {
5789 .cmd = NL80211_CMD_SET_CQM,
5790 .doit = nl80211_set_cqm,
5791 .policy = nl80211_policy,
5792 .flags = GENL_ADMIN_PERM,
5793 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5794 NL80211_FLAG_NEED_RTNL,
5795 },
5796 {
5797 .cmd = NL80211_CMD_SET_CHANNEL,
5798 .doit = nl80211_set_channel,
5799 .policy = nl80211_policy,
5800 .flags = GENL_ADMIN_PERM,
5801 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5802 NL80211_FLAG_NEED_RTNL,
5803 },
5804 {
5805 .cmd = NL80211_CMD_SET_WDS_PEER,
5806 .doit = nl80211_set_wds_peer,
5807 .policy = nl80211_policy,
5808 .flags = GENL_ADMIN_PERM,
5809 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5810 NL80211_FLAG_NEED_RTNL,
5811 },
5812 {
5813 .cmd = NL80211_CMD_JOIN_MESH,
5814 .doit = nl80211_join_mesh,
5815 .policy = nl80211_policy,
5816 .flags = GENL_ADMIN_PERM,
5817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5818 NL80211_FLAG_NEED_RTNL,
5819 },
5820 {
5821 .cmd = NL80211_CMD_LEAVE_MESH,
5822 .doit = nl80211_leave_mesh,
5823 .policy = nl80211_policy,
5824 .flags = GENL_ADMIN_PERM,
5825 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5826 NL80211_FLAG_NEED_RTNL,
5827 },
5828 {
5829 .cmd = NL80211_CMD_GET_WOWLAN,
5830 .doit = nl80211_get_wowlan,
5831 .policy = nl80211_policy,
5832 /* can be retrieved by unprivileged users */
5833 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5834 NL80211_FLAG_NEED_RTNL,
5835 },
5836 {
5837 .cmd = NL80211_CMD_SET_WOWLAN,
5838 .doit = nl80211_set_wowlan,
5839 .policy = nl80211_policy,
5840 .flags = GENL_ADMIN_PERM,
5841 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5842 NL80211_FLAG_NEED_RTNL,
5843 },
5844 };
5845
5846 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5847 .name = "mlme",
5848 };
5849
5850 /* multicast groups */
5851 static struct genl_multicast_group nl80211_config_mcgrp = {
5852 .name = "config",
5853 };
5854 static struct genl_multicast_group nl80211_scan_mcgrp = {
5855 .name = "scan",
5856 };
5857 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5858 .name = "regulatory",
5859 };
5860
5861 /* notification functions */
5862
5863 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5864 {
5865 struct sk_buff *msg;
5866
5867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5868 if (!msg)
5869 return;
5870
5871 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5872 nlmsg_free(msg);
5873 return;
5874 }
5875
5876 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5877 nl80211_config_mcgrp.id, GFP_KERNEL);
5878 }
5879
5880 static int nl80211_add_scan_req(struct sk_buff *msg,
5881 struct cfg80211_registered_device *rdev)
5882 {
5883 struct cfg80211_scan_request *req = rdev->scan_req;
5884 struct nlattr *nest;
5885 int i;
5886
5887 ASSERT_RDEV_LOCK(rdev);
5888
5889 if (WARN_ON(!req))
5890 return 0;
5891
5892 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5893 if (!nest)
5894 goto nla_put_failure;
5895 for (i = 0; i < req->n_ssids; i++)
5896 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5897 nla_nest_end(msg, nest);
5898
5899 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5900 if (!nest)
5901 goto nla_put_failure;
5902 for (i = 0; i < req->n_channels; i++)
5903 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5904 nla_nest_end(msg, nest);
5905
5906 if (req->ie)
5907 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5908
5909 return 0;
5910 nla_put_failure:
5911 return -ENOBUFS;
5912 }
5913
5914 static int nl80211_send_scan_msg(struct sk_buff *msg,
5915 struct cfg80211_registered_device *rdev,
5916 struct net_device *netdev,
5917 u32 pid, u32 seq, int flags,
5918 u32 cmd)
5919 {
5920 void *hdr;
5921
5922 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5923 if (!hdr)
5924 return -1;
5925
5926 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5927 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5928
5929 /* ignore errors and send incomplete event anyway */
5930 nl80211_add_scan_req(msg, rdev);
5931
5932 return genlmsg_end(msg, hdr);
5933
5934 nla_put_failure:
5935 genlmsg_cancel(msg, hdr);
5936 return -EMSGSIZE;
5937 }
5938
5939 static int
5940 nl80211_send_sched_scan_msg(struct sk_buff *msg,
5941 struct cfg80211_registered_device *rdev,
5942 struct net_device *netdev,
5943 u32 pid, u32 seq, int flags, u32 cmd)
5944 {
5945 void *hdr;
5946
5947 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5948 if (!hdr)
5949 return -1;
5950
5951 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5952 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5953
5954 return genlmsg_end(msg, hdr);
5955
5956 nla_put_failure:
5957 genlmsg_cancel(msg, hdr);
5958 return -EMSGSIZE;
5959 }
5960
5961 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5962 struct net_device *netdev)
5963 {
5964 struct sk_buff *msg;
5965
5966 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5967 if (!msg)
5968 return;
5969
5970 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5971 NL80211_CMD_TRIGGER_SCAN) < 0) {
5972 nlmsg_free(msg);
5973 return;
5974 }
5975
5976 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5977 nl80211_scan_mcgrp.id, GFP_KERNEL);
5978 }
5979
5980 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5981 struct net_device *netdev)
5982 {
5983 struct sk_buff *msg;
5984
5985 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5986 if (!msg)
5987 return;
5988
5989 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5990 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5991 nlmsg_free(msg);
5992 return;
5993 }
5994
5995 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5996 nl80211_scan_mcgrp.id, GFP_KERNEL);
5997 }
5998
5999 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6000 struct net_device *netdev)
6001 {
6002 struct sk_buff *msg;
6003
6004 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6005 if (!msg)
6006 return;
6007
6008 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6009 NL80211_CMD_SCAN_ABORTED) < 0) {
6010 nlmsg_free(msg);
6011 return;
6012 }
6013
6014 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6015 nl80211_scan_mcgrp.id, GFP_KERNEL);
6016 }
6017
6018 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6019 struct net_device *netdev)
6020 {
6021 struct sk_buff *msg;
6022
6023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6024 if (!msg)
6025 return;
6026
6027 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6028 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6029 nlmsg_free(msg);
6030 return;
6031 }
6032
6033 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6034 nl80211_scan_mcgrp.id, GFP_KERNEL);
6035 }
6036
6037 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6038 struct net_device *netdev, u32 cmd)
6039 {
6040 struct sk_buff *msg;
6041
6042 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6043 if (!msg)
6044 return;
6045
6046 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6047 nlmsg_free(msg);
6048 return;
6049 }
6050
6051 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6052 nl80211_scan_mcgrp.id, GFP_KERNEL);
6053 }
6054
6055 /*
6056 * This can happen on global regulatory changes or device specific settings
6057 * based on custom world regulatory domains.
6058 */
6059 void nl80211_send_reg_change_event(struct regulatory_request *request)
6060 {
6061 struct sk_buff *msg;
6062 void *hdr;
6063
6064 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6065 if (!msg)
6066 return;
6067
6068 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6069 if (!hdr) {
6070 nlmsg_free(msg);
6071 return;
6072 }
6073
6074 /* Userspace can always count this one always being set */
6075 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6076
6077 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6078 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6079 NL80211_REGDOM_TYPE_WORLD);
6080 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6081 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6082 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6083 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6084 request->intersect)
6085 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6086 NL80211_REGDOM_TYPE_INTERSECTION);
6087 else {
6088 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6089 NL80211_REGDOM_TYPE_COUNTRY);
6090 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6091 }
6092
6093 if (wiphy_idx_valid(request->wiphy_idx))
6094 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6095
6096 if (genlmsg_end(msg, hdr) < 0) {
6097 nlmsg_free(msg);
6098 return;
6099 }
6100
6101 rcu_read_lock();
6102 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6103 GFP_ATOMIC);
6104 rcu_read_unlock();
6105
6106 return;
6107
6108 nla_put_failure:
6109 genlmsg_cancel(msg, hdr);
6110 nlmsg_free(msg);
6111 }
6112
6113 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6114 struct net_device *netdev,
6115 const u8 *buf, size_t len,
6116 enum nl80211_commands cmd, gfp_t gfp)
6117 {
6118 struct sk_buff *msg;
6119 void *hdr;
6120
6121 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6122 if (!msg)
6123 return;
6124
6125 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6126 if (!hdr) {
6127 nlmsg_free(msg);
6128 return;
6129 }
6130
6131 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6132 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6133 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6134
6135 if (genlmsg_end(msg, hdr) < 0) {
6136 nlmsg_free(msg);
6137 return;
6138 }
6139
6140 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6141 nl80211_mlme_mcgrp.id, gfp);
6142 return;
6143
6144 nla_put_failure:
6145 genlmsg_cancel(msg, hdr);
6146 nlmsg_free(msg);
6147 }
6148
6149 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6150 struct net_device *netdev, const u8 *buf,
6151 size_t len, gfp_t gfp)
6152 {
6153 nl80211_send_mlme_event(rdev, netdev, buf, len,
6154 NL80211_CMD_AUTHENTICATE, gfp);
6155 }
6156
6157 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6158 struct net_device *netdev, const u8 *buf,
6159 size_t len, gfp_t gfp)
6160 {
6161 nl80211_send_mlme_event(rdev, netdev, buf, len,
6162 NL80211_CMD_ASSOCIATE, gfp);
6163 }
6164
6165 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6166 struct net_device *netdev, const u8 *buf,
6167 size_t len, gfp_t gfp)
6168 {
6169 nl80211_send_mlme_event(rdev, netdev, buf, len,
6170 NL80211_CMD_DEAUTHENTICATE, gfp);
6171 }
6172
6173 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6174 struct net_device *netdev, const u8 *buf,
6175 size_t len, gfp_t gfp)
6176 {
6177 nl80211_send_mlme_event(rdev, netdev, buf, len,
6178 NL80211_CMD_DISASSOCIATE, gfp);
6179 }
6180
6181 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6182 struct net_device *netdev, const u8 *buf,
6183 size_t len, gfp_t gfp)
6184 {
6185 nl80211_send_mlme_event(rdev, netdev, buf, len,
6186 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6187 }
6188
6189 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6190 struct net_device *netdev, const u8 *buf,
6191 size_t len, gfp_t gfp)
6192 {
6193 nl80211_send_mlme_event(rdev, netdev, buf, len,
6194 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6195 }
6196
6197 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6198 struct net_device *netdev, int cmd,
6199 const u8 *addr, gfp_t gfp)
6200 {
6201 struct sk_buff *msg;
6202 void *hdr;
6203
6204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6205 if (!msg)
6206 return;
6207
6208 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6209 if (!hdr) {
6210 nlmsg_free(msg);
6211 return;
6212 }
6213
6214 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6215 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6216 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6217 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6218
6219 if (genlmsg_end(msg, hdr) < 0) {
6220 nlmsg_free(msg);
6221 return;
6222 }
6223
6224 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6225 nl80211_mlme_mcgrp.id, gfp);
6226 return;
6227
6228 nla_put_failure:
6229 genlmsg_cancel(msg, hdr);
6230 nlmsg_free(msg);
6231 }
6232
6233 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6234 struct net_device *netdev, const u8 *addr,
6235 gfp_t gfp)
6236 {
6237 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6238 addr, gfp);
6239 }
6240
6241 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6242 struct net_device *netdev, const u8 *addr,
6243 gfp_t gfp)
6244 {
6245 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6246 addr, gfp);
6247 }
6248
6249 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6250 struct net_device *netdev, const u8 *bssid,
6251 const u8 *req_ie, size_t req_ie_len,
6252 const u8 *resp_ie, size_t resp_ie_len,
6253 u16 status, gfp_t gfp)
6254 {
6255 struct sk_buff *msg;
6256 void *hdr;
6257
6258 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6259 if (!msg)
6260 return;
6261
6262 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6263 if (!hdr) {
6264 nlmsg_free(msg);
6265 return;
6266 }
6267
6268 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6269 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6270 if (bssid)
6271 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6272 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6273 if (req_ie)
6274 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6275 if (resp_ie)
6276 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6277
6278 if (genlmsg_end(msg, hdr) < 0) {
6279 nlmsg_free(msg);
6280 return;
6281 }
6282
6283 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6284 nl80211_mlme_mcgrp.id, gfp);
6285 return;
6286
6287 nla_put_failure:
6288 genlmsg_cancel(msg, hdr);
6289 nlmsg_free(msg);
6290
6291 }
6292
6293 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6294 struct net_device *netdev, const u8 *bssid,
6295 const u8 *req_ie, size_t req_ie_len,
6296 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6297 {
6298 struct sk_buff *msg;
6299 void *hdr;
6300
6301 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6302 if (!msg)
6303 return;
6304
6305 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6306 if (!hdr) {
6307 nlmsg_free(msg);
6308 return;
6309 }
6310
6311 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6312 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6313 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6314 if (req_ie)
6315 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6316 if (resp_ie)
6317 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6318
6319 if (genlmsg_end(msg, hdr) < 0) {
6320 nlmsg_free(msg);
6321 return;
6322 }
6323
6324 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6325 nl80211_mlme_mcgrp.id, gfp);
6326 return;
6327
6328 nla_put_failure:
6329 genlmsg_cancel(msg, hdr);
6330 nlmsg_free(msg);
6331
6332 }
6333
6334 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6335 struct net_device *netdev, u16 reason,
6336 const u8 *ie, size_t ie_len, bool from_ap)
6337 {
6338 struct sk_buff *msg;
6339 void *hdr;
6340
6341 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6342 if (!msg)
6343 return;
6344
6345 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6346 if (!hdr) {
6347 nlmsg_free(msg);
6348 return;
6349 }
6350
6351 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6352 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6353 if (from_ap && reason)
6354 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6355 if (from_ap)
6356 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6357 if (ie)
6358 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6359
6360 if (genlmsg_end(msg, hdr) < 0) {
6361 nlmsg_free(msg);
6362 return;
6363 }
6364
6365 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6366 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6367 return;
6368
6369 nla_put_failure:
6370 genlmsg_cancel(msg, hdr);
6371 nlmsg_free(msg);
6372
6373 }
6374
6375 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6376 struct net_device *netdev, const u8 *bssid,
6377 gfp_t gfp)
6378 {
6379 struct sk_buff *msg;
6380 void *hdr;
6381
6382 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6383 if (!msg)
6384 return;
6385
6386 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6387 if (!hdr) {
6388 nlmsg_free(msg);
6389 return;
6390 }
6391
6392 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6393 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6394 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6395
6396 if (genlmsg_end(msg, hdr) < 0) {
6397 nlmsg_free(msg);
6398 return;
6399 }
6400
6401 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6402 nl80211_mlme_mcgrp.id, gfp);
6403 return;
6404
6405 nla_put_failure:
6406 genlmsg_cancel(msg, hdr);
6407 nlmsg_free(msg);
6408 }
6409
6410 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6411 struct net_device *netdev,
6412 const u8 *macaddr, const u8* ie, u8 ie_len,
6413 gfp_t gfp)
6414 {
6415 struct sk_buff *msg;
6416 void *hdr;
6417
6418 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6419 if (!msg)
6420 return;
6421
6422 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6423 if (!hdr) {
6424 nlmsg_free(msg);
6425 return;
6426 }
6427
6428 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6429 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6430 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6431 if (ie_len && ie)
6432 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6433
6434 if (genlmsg_end(msg, hdr) < 0) {
6435 nlmsg_free(msg);
6436 return;
6437 }
6438
6439 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6440 nl80211_mlme_mcgrp.id, gfp);
6441 return;
6442
6443 nla_put_failure:
6444 genlmsg_cancel(msg, hdr);
6445 nlmsg_free(msg);
6446 }
6447
6448 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6449 struct net_device *netdev, const u8 *addr,
6450 enum nl80211_key_type key_type, int key_id,
6451 const u8 *tsc, gfp_t gfp)
6452 {
6453 struct sk_buff *msg;
6454 void *hdr;
6455
6456 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6457 if (!msg)
6458 return;
6459
6460 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6461 if (!hdr) {
6462 nlmsg_free(msg);
6463 return;
6464 }
6465
6466 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6467 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6468 if (addr)
6469 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6470 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6471 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6472 if (tsc)
6473 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6474
6475 if (genlmsg_end(msg, hdr) < 0) {
6476 nlmsg_free(msg);
6477 return;
6478 }
6479
6480 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6481 nl80211_mlme_mcgrp.id, gfp);
6482 return;
6483
6484 nla_put_failure:
6485 genlmsg_cancel(msg, hdr);
6486 nlmsg_free(msg);
6487 }
6488
6489 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6490 struct ieee80211_channel *channel_before,
6491 struct ieee80211_channel *channel_after)
6492 {
6493 struct sk_buff *msg;
6494 void *hdr;
6495 struct nlattr *nl_freq;
6496
6497 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6498 if (!msg)
6499 return;
6500
6501 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6502 if (!hdr) {
6503 nlmsg_free(msg);
6504 return;
6505 }
6506
6507 /*
6508 * Since we are applying the beacon hint to a wiphy we know its
6509 * wiphy_idx is valid
6510 */
6511 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6512
6513 /* Before */
6514 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6515 if (!nl_freq)
6516 goto nla_put_failure;
6517 if (nl80211_msg_put_channel(msg, channel_before))
6518 goto nla_put_failure;
6519 nla_nest_end(msg, nl_freq);
6520
6521 /* After */
6522 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6523 if (!nl_freq)
6524 goto nla_put_failure;
6525 if (nl80211_msg_put_channel(msg, channel_after))
6526 goto nla_put_failure;
6527 nla_nest_end(msg, nl_freq);
6528
6529 if (genlmsg_end(msg, hdr) < 0) {
6530 nlmsg_free(msg);
6531 return;
6532 }
6533
6534 rcu_read_lock();
6535 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6536 GFP_ATOMIC);
6537 rcu_read_unlock();
6538
6539 return;
6540
6541 nla_put_failure:
6542 genlmsg_cancel(msg, hdr);
6543 nlmsg_free(msg);
6544 }
6545
6546 static void nl80211_send_remain_on_chan_event(
6547 int cmd, struct cfg80211_registered_device *rdev,
6548 struct net_device *netdev, u64 cookie,
6549 struct ieee80211_channel *chan,
6550 enum nl80211_channel_type channel_type,
6551 unsigned int duration, gfp_t gfp)
6552 {
6553 struct sk_buff *msg;
6554 void *hdr;
6555
6556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6557 if (!msg)
6558 return;
6559
6560 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6561 if (!hdr) {
6562 nlmsg_free(msg);
6563 return;
6564 }
6565
6566 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6567 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6568 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6569 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6570 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6571
6572 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6573 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6574
6575 if (genlmsg_end(msg, hdr) < 0) {
6576 nlmsg_free(msg);
6577 return;
6578 }
6579
6580 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6581 nl80211_mlme_mcgrp.id, gfp);
6582 return;
6583
6584 nla_put_failure:
6585 genlmsg_cancel(msg, hdr);
6586 nlmsg_free(msg);
6587 }
6588
6589 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6590 struct net_device *netdev, u64 cookie,
6591 struct ieee80211_channel *chan,
6592 enum nl80211_channel_type channel_type,
6593 unsigned int duration, gfp_t gfp)
6594 {
6595 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6596 rdev, netdev, cookie, chan,
6597 channel_type, duration, gfp);
6598 }
6599
6600 void nl80211_send_remain_on_channel_cancel(
6601 struct cfg80211_registered_device *rdev, struct net_device *netdev,
6602 u64 cookie, struct ieee80211_channel *chan,
6603 enum nl80211_channel_type channel_type, gfp_t gfp)
6604 {
6605 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6606 rdev, netdev, cookie, chan,
6607 channel_type, 0, gfp);
6608 }
6609
6610 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6611 struct net_device *dev, const u8 *mac_addr,
6612 struct station_info *sinfo, gfp_t gfp)
6613 {
6614 struct sk_buff *msg;
6615
6616 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6617 if (!msg)
6618 return;
6619
6620 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6621 nlmsg_free(msg);
6622 return;
6623 }
6624
6625 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6626 nl80211_mlme_mcgrp.id, gfp);
6627 }
6628
6629 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
6630 struct net_device *dev, const u8 *mac_addr,
6631 gfp_t gfp)
6632 {
6633 struct sk_buff *msg;
6634 void *hdr;
6635
6636 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6637 if (!msg)
6638 return;
6639
6640 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
6641 if (!hdr) {
6642 nlmsg_free(msg);
6643 return;
6644 }
6645
6646 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
6647 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
6648
6649 if (genlmsg_end(msg, hdr) < 0) {
6650 nlmsg_free(msg);
6651 return;
6652 }
6653
6654 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6655 nl80211_mlme_mcgrp.id, gfp);
6656 return;
6657
6658 nla_put_failure:
6659 genlmsg_cancel(msg, hdr);
6660 nlmsg_free(msg);
6661 }
6662
6663 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
6664 struct net_device *netdev, u32 nlpid,
6665 int freq, const u8 *buf, size_t len, gfp_t gfp)
6666 {
6667 struct sk_buff *msg;
6668 void *hdr;
6669 int err;
6670
6671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6672 if (!msg)
6673 return -ENOMEM;
6674
6675 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
6676 if (!hdr) {
6677 nlmsg_free(msg);
6678 return -ENOMEM;
6679 }
6680
6681 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6682 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6683 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6684 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6685
6686 err = genlmsg_end(msg, hdr);
6687 if (err < 0) {
6688 nlmsg_free(msg);
6689 return err;
6690 }
6691
6692 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
6693 if (err < 0)
6694 return err;
6695 return 0;
6696
6697 nla_put_failure:
6698 genlmsg_cancel(msg, hdr);
6699 nlmsg_free(msg);
6700 return -ENOBUFS;
6701 }
6702
6703 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6704 struct net_device *netdev, u64 cookie,
6705 const u8 *buf, size_t len, bool ack,
6706 gfp_t gfp)
6707 {
6708 struct sk_buff *msg;
6709 void *hdr;
6710
6711 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6712 if (!msg)
6713 return;
6714
6715 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6716 if (!hdr) {
6717 nlmsg_free(msg);
6718 return;
6719 }
6720
6721 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6722 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6723 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6724 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6725 if (ack)
6726 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6727
6728 if (genlmsg_end(msg, hdr) < 0) {
6729 nlmsg_free(msg);
6730 return;
6731 }
6732
6733 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6734 return;
6735
6736 nla_put_failure:
6737 genlmsg_cancel(msg, hdr);
6738 nlmsg_free(msg);
6739 }
6740
6741 void
6742 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6743 struct net_device *netdev,
6744 enum nl80211_cqm_rssi_threshold_event rssi_event,
6745 gfp_t gfp)
6746 {
6747 struct sk_buff *msg;
6748 struct nlattr *pinfoattr;
6749 void *hdr;
6750
6751 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6752 if (!msg)
6753 return;
6754
6755 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6756 if (!hdr) {
6757 nlmsg_free(msg);
6758 return;
6759 }
6760
6761 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6762 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6763
6764 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6765 if (!pinfoattr)
6766 goto nla_put_failure;
6767
6768 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6769 rssi_event);
6770
6771 nla_nest_end(msg, pinfoattr);
6772
6773 if (genlmsg_end(msg, hdr) < 0) {
6774 nlmsg_free(msg);
6775 return;
6776 }
6777
6778 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6779 nl80211_mlme_mcgrp.id, gfp);
6780 return;
6781
6782 nla_put_failure:
6783 genlmsg_cancel(msg, hdr);
6784 nlmsg_free(msg);
6785 }
6786
6787 void
6788 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6789 struct net_device *netdev, const u8 *peer,
6790 u32 num_packets, gfp_t gfp)
6791 {
6792 struct sk_buff *msg;
6793 struct nlattr *pinfoattr;
6794 void *hdr;
6795
6796 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6797 if (!msg)
6798 return;
6799
6800 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6801 if (!hdr) {
6802 nlmsg_free(msg);
6803 return;
6804 }
6805
6806 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6807 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6808 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6809
6810 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6811 if (!pinfoattr)
6812 goto nla_put_failure;
6813
6814 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6815
6816 nla_nest_end(msg, pinfoattr);
6817
6818 if (genlmsg_end(msg, hdr) < 0) {
6819 nlmsg_free(msg);
6820 return;
6821 }
6822
6823 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6824 nl80211_mlme_mcgrp.id, gfp);
6825 return;
6826
6827 nla_put_failure:
6828 genlmsg_cancel(msg, hdr);
6829 nlmsg_free(msg);
6830 }
6831
6832 static int nl80211_netlink_notify(struct notifier_block * nb,
6833 unsigned long state,
6834 void *_notify)
6835 {
6836 struct netlink_notify *notify = _notify;
6837 struct cfg80211_registered_device *rdev;
6838 struct wireless_dev *wdev;
6839
6840 if (state != NETLINK_URELEASE)
6841 return NOTIFY_DONE;
6842
6843 rcu_read_lock();
6844
6845 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6846 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6847 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6848
6849 rcu_read_unlock();
6850
6851 return NOTIFY_DONE;
6852 }
6853
6854 static struct notifier_block nl80211_netlink_notifier = {
6855 .notifier_call = nl80211_netlink_notify,
6856 };
6857
6858 /* initialisation/exit functions */
6859
6860 int nl80211_init(void)
6861 {
6862 int err;
6863
6864 err = genl_register_family_with_ops(&nl80211_fam,
6865 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6866 if (err)
6867 return err;
6868
6869 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6870 if (err)
6871 goto err_out;
6872
6873 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6874 if (err)
6875 goto err_out;
6876
6877 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6878 if (err)
6879 goto err_out;
6880
6881 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6882 if (err)
6883 goto err_out;
6884
6885 #ifdef CONFIG_NL80211_TESTMODE
6886 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6887 if (err)
6888 goto err_out;
6889 #endif
6890
6891 err = netlink_register_notifier(&nl80211_netlink_notifier);
6892 if (err)
6893 goto err_out;
6894
6895 return 0;
6896 err_out:
6897 genl_unregister_family(&nl80211_fam);
6898 return err;
6899 }
6900
6901 void nl80211_exit(void)
6902 {
6903 netlink_unregister_notifier(&nl80211_netlink_notifier);
6904 genl_unregister_family(&nl80211_fam);
6905 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree