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sysctl,rcu: Convert call_rcu(free_head) to kfree
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blobf07602d7bf68595fa73effe1ff90f759cd3f0447
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 = -1;
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 nlattr *attr;
3298 struct wiphy *wiphy;
3299 int err, tmp, n_ssids = 0, n_channels, i;
3300 enum ieee80211_band band;
3301 size_t ie_len;
3302
3303 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3304 return -EINVAL;
3305
3306 wiphy = &rdev->wiphy;
3307
3308 if (!rdev->ops->scan)
3309 return -EOPNOTSUPP;
3310
3311 if (rdev->scan_req)
3312 return -EBUSY;
3313
3314 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3315 n_channels = validate_scan_freqs(
3316 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3317 if (!n_channels)
3318 return -EINVAL;
3319 } else {
3320 n_channels = 0;
3321
3322 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3323 if (wiphy->bands[band])
3324 n_channels += wiphy->bands[band]->n_channels;
3325 }
3326
3327 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3328 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3329 n_ssids++;
3330
3331 if (n_ssids > wiphy->max_scan_ssids)
3332 return -EINVAL;
3333
3334 if (info->attrs[NL80211_ATTR_IE])
3335 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3336 else
3337 ie_len = 0;
3338
3339 if (ie_len > wiphy->max_scan_ie_len)
3340 return -EINVAL;
3341
3342 request = kzalloc(sizeof(*request)
3343 + sizeof(*request->ssids) * n_ssids
3344 + sizeof(*request->channels) * n_channels
3345 + ie_len, GFP_KERNEL);
3346 if (!request)
3347 return -ENOMEM;
3348
3349 if (n_ssids)
3350 request->ssids = (void *)&request->channels[n_channels];
3351 request->n_ssids = n_ssids;
3352 if (ie_len) {
3353 if (request->ssids)
3354 request->ie = (void *)(request->ssids + n_ssids);
3355 else
3356 request->ie = (void *)(request->channels + n_channels);
3357 }
3358
3359 i = 0;
3360 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3361 /* user specified, bail out if channel not found */
3362 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3363 struct ieee80211_channel *chan;
3364
3365 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3366
3367 if (!chan) {
3368 err = -EINVAL;
3369 goto out_free;
3370 }
3371
3372 /* ignore disabled channels */
3373 if (chan->flags & IEEE80211_CHAN_DISABLED)
3374 continue;
3375
3376 request->channels[i] = chan;
3377 i++;
3378 }
3379 } else {
3380 /* all channels */
3381 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3382 int j;
3383 if (!wiphy->bands[band])
3384 continue;
3385 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3386 struct ieee80211_channel *chan;
3387
3388 chan = &wiphy->bands[band]->channels[j];
3389
3390 if (chan->flags & IEEE80211_CHAN_DISABLED)
3391 continue;
3392
3393 request->channels[i] = chan;
3394 i++;
3395 }
3396 }
3397 }
3398
3399 if (!i) {
3400 err = -EINVAL;
3401 goto out_free;
3402 }
3403
3404 request->n_channels = i;
3405
3406 i = 0;
3407 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3408 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3409 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3410 err = -EINVAL;
3411 goto out_free;
3412 }
3413 request->ssids[i].ssid_len = nla_len(attr);
3414 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3415 i++;
3416 }
3417 }
3418
3419 if (info->attrs[NL80211_ATTR_IE]) {
3420 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3421 memcpy((void *)request->ie,
3422 nla_data(info->attrs[NL80211_ATTR_IE]),
3423 request->ie_len);
3424 }
3425
3426 request->dev = dev;
3427 request->wiphy = &rdev->wiphy;
3428
3429 rdev->scan_req = request;
3430 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3431
3432 if (!err) {
3433 nl80211_send_scan_start(rdev, dev);
3434 dev_hold(dev);
3435 } else {
3436 out_free:
3437 rdev->scan_req = NULL;
3438 kfree(request);
3439 }
3440
3441 return err;
3442 }
3443
3444 static int nl80211_start_sched_scan(struct sk_buff *skb,
3445 struct genl_info *info)
3446 {
3447 struct cfg80211_sched_scan_request *request;
3448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3449 struct net_device *dev = info->user_ptr[1];
3450 struct nlattr *attr;
3451 struct wiphy *wiphy;
3452 int err, tmp, n_ssids = 0, n_channels, i;
3453 u32 interval;
3454 enum ieee80211_band band;
3455 size_t ie_len;
3456
3457 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3458 !rdev->ops->sched_scan_start)
3459 return -EOPNOTSUPP;
3460
3461 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3462 return -EINVAL;
3463
3464 if (rdev->sched_scan_req)
3465 return -EINPROGRESS;
3466
3467 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3468 return -EINVAL;
3469
3470 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3471 if (interval == 0)
3472 return -EINVAL;
3473
3474 wiphy = &rdev->wiphy;
3475
3476 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3477 n_channels = validate_scan_freqs(
3478 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3479 if (!n_channels)
3480 return -EINVAL;
3481 } else {
3482 n_channels = 0;
3483
3484 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3485 if (wiphy->bands[band])
3486 n_channels += wiphy->bands[band]->n_channels;
3487 }
3488
3489 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3490 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3491 tmp)
3492 n_ssids++;
3493
3494 if (n_ssids > wiphy->max_scan_ssids)
3495 return -EINVAL;
3496
3497 if (info->attrs[NL80211_ATTR_IE])
3498 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3499 else
3500 ie_len = 0;
3501
3502 if (ie_len > wiphy->max_scan_ie_len)
3503 return -EINVAL;
3504
3505 request = kzalloc(sizeof(*request)
3506 + sizeof(*request->ssids) * n_ssids
3507 + sizeof(*request->channels) * n_channels
3508 + ie_len, GFP_KERNEL);
3509 if (!request)
3510 return -ENOMEM;
3511
3512 if (n_ssids)
3513 request->ssids = (void *)&request->channels[n_channels];
3514 request->n_ssids = n_ssids;
3515 if (ie_len) {
3516 if (request->ssids)
3517 request->ie = (void *)(request->ssids + n_ssids);
3518 else
3519 request->ie = (void *)(request->channels + n_channels);
3520 }
3521
3522 i = 0;
3523 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3524 /* user specified, bail out if channel not found */
3525 nla_for_each_nested(attr,
3526 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3527 tmp) {
3528 struct ieee80211_channel *chan;
3529
3530 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3531
3532 if (!chan) {
3533 err = -EINVAL;
3534 goto out_free;
3535 }
3536
3537 /* ignore disabled channels */
3538 if (chan->flags & IEEE80211_CHAN_DISABLED)
3539 continue;
3540
3541 request->channels[i] = chan;
3542 i++;
3543 }
3544 } else {
3545 /* all channels */
3546 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3547 int j;
3548 if (!wiphy->bands[band])
3549 continue;
3550 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3551 struct ieee80211_channel *chan;
3552
3553 chan = &wiphy->bands[band]->channels[j];
3554
3555 if (chan->flags & IEEE80211_CHAN_DISABLED)
3556 continue;
3557
3558 request->channels[i] = chan;
3559 i++;
3560 }
3561 }
3562 }
3563
3564 if (!i) {
3565 err = -EINVAL;
3566 goto out_free;
3567 }
3568
3569 request->n_channels = i;
3570
3571 i = 0;
3572 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3573 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3574 tmp) {
3575 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3576 err = -EINVAL;
3577 goto out_free;
3578 }
3579 request->ssids[i].ssid_len = nla_len(attr);
3580 memcpy(request->ssids[i].ssid, nla_data(attr),
3581 nla_len(attr));
3582 i++;
3583 }
3584 }
3585
3586 if (info->attrs[NL80211_ATTR_IE]) {
3587 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3588 memcpy((void *)request->ie,
3589 nla_data(info->attrs[NL80211_ATTR_IE]),
3590 request->ie_len);
3591 }
3592
3593 request->dev = dev;
3594 request->wiphy = &rdev->wiphy;
3595 request->interval = interval;
3596
3597 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3598 if (!err) {
3599 rdev->sched_scan_req = request;
3600 nl80211_send_sched_scan(rdev, dev,
3601 NL80211_CMD_START_SCHED_SCAN);
3602 goto out;
3603 }
3604
3605 out_free:
3606 kfree(request);
3607 out:
3608 return err;
3609 }
3610
3611 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3612 struct genl_info *info)
3613 {
3614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3615
3616 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3617 !rdev->ops->sched_scan_stop)
3618 return -EOPNOTSUPP;
3619
3620 return __cfg80211_stop_sched_scan(rdev, false);
3621 }
3622
3623 static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3624 struct cfg80211_registered_device *rdev,
3625 struct wireless_dev *wdev,
3626 struct cfg80211_internal_bss *intbss)
3627 {
3628 struct cfg80211_bss *res = &intbss->pub;
3629 void *hdr;
3630 struct nlattr *bss;
3631 int i;
3632
3633 ASSERT_WDEV_LOCK(wdev);
3634
3635 hdr = nl80211hdr_put(msg, pid, seq, flags,
3636 NL80211_CMD_NEW_SCAN_RESULTS);
3637 if (!hdr)
3638 return -1;
3639
3640 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3641 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3642
3643 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3644 if (!bss)
3645 goto nla_put_failure;
3646 if (!is_zero_ether_addr(res->bssid))
3647 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3648 if (res->information_elements && res->len_information_elements)
3649 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3650 res->len_information_elements,
3651 res->information_elements);
3652 if (res->beacon_ies && res->len_beacon_ies &&
3653 res->beacon_ies != res->information_elements)
3654 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3655 res->len_beacon_ies, res->beacon_ies);
3656 if (res->tsf)
3657 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3658 if (res->beacon_interval)
3659 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3660 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3661 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3662 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3663 jiffies_to_msecs(jiffies - intbss->ts));
3664
3665 switch (rdev->wiphy.signal_type) {
3666 case CFG80211_SIGNAL_TYPE_MBM:
3667 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3668 break;
3669 case CFG80211_SIGNAL_TYPE_UNSPEC:
3670 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3671 break;
3672 default:
3673 break;
3674 }
3675
3676 switch (wdev->iftype) {
3677 case NL80211_IFTYPE_P2P_CLIENT:
3678 case NL80211_IFTYPE_STATION:
3679 if (intbss == wdev->current_bss)
3680 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3681 NL80211_BSS_STATUS_ASSOCIATED);
3682 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3683 if (intbss != wdev->auth_bsses[i])
3684 continue;
3685 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3686 NL80211_BSS_STATUS_AUTHENTICATED);
3687 break;
3688 }
3689 break;
3690 case NL80211_IFTYPE_ADHOC:
3691 if (intbss == wdev->current_bss)
3692 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3693 NL80211_BSS_STATUS_IBSS_JOINED);
3694 break;
3695 default:
3696 break;
3697 }
3698
3699 nla_nest_end(msg, bss);
3700
3701 return genlmsg_end(msg, hdr);
3702
3703 nla_put_failure:
3704 genlmsg_cancel(msg, hdr);
3705 return -EMSGSIZE;
3706 }
3707
3708 static int nl80211_dump_scan(struct sk_buff *skb,
3709 struct netlink_callback *cb)
3710 {
3711 struct cfg80211_registered_device *rdev;
3712 struct net_device *dev;
3713 struct cfg80211_internal_bss *scan;
3714 struct wireless_dev *wdev;
3715 int start = cb->args[1], idx = 0;
3716 int err;
3717
3718 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3719 if (err)
3720 return err;
3721
3722 wdev = dev->ieee80211_ptr;
3723
3724 wdev_lock(wdev);
3725 spin_lock_bh(&rdev->bss_lock);
3726 cfg80211_bss_expire(rdev);
3727
3728 list_for_each_entry(scan, &rdev->bss_list, list) {
3729 if (++idx <= start)
3730 continue;
3731 if (nl80211_send_bss(skb,
3732 NETLINK_CB(cb->skb).pid,
3733 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3734 rdev, wdev, scan) < 0) {
3735 idx--;
3736 break;
3737 }
3738 }
3739
3740 spin_unlock_bh(&rdev->bss_lock);
3741 wdev_unlock(wdev);
3742
3743 cb->args[1] = idx;
3744 nl80211_finish_netdev_dump(rdev);
3745
3746 return skb->len;
3747 }
3748
3749 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3750 int flags, struct net_device *dev,
3751 struct survey_info *survey)
3752 {
3753 void *hdr;
3754 struct nlattr *infoattr;
3755
3756 /* Survey without a channel doesn't make sense */
3757 if (!survey->channel)
3758 return -EINVAL;
3759
3760 hdr = nl80211hdr_put(msg, pid, seq, flags,
3761 NL80211_CMD_NEW_SURVEY_RESULTS);
3762 if (!hdr)
3763 return -ENOMEM;
3764
3765 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3766
3767 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3768 if (!infoattr)
3769 goto nla_put_failure;
3770
3771 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3772 survey->channel->center_freq);
3773 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3774 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3775 survey->noise);
3776 if (survey->filled & SURVEY_INFO_IN_USE)
3777 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3778 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3779 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3780 survey->channel_time);
3781 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3782 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3783 survey->channel_time_busy);
3784 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3785 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3786 survey->channel_time_ext_busy);
3787 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3788 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3789 survey->channel_time_rx);
3790 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3791 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3792 survey->channel_time_tx);
3793
3794 nla_nest_end(msg, infoattr);
3795
3796 return genlmsg_end(msg, hdr);
3797
3798 nla_put_failure:
3799 genlmsg_cancel(msg, hdr);
3800 return -EMSGSIZE;
3801 }
3802
3803 static int nl80211_dump_survey(struct sk_buff *skb,
3804 struct netlink_callback *cb)
3805 {
3806 struct survey_info survey;
3807 struct cfg80211_registered_device *dev;
3808 struct net_device *netdev;
3809 int survey_idx = cb->args[1];
3810 int res;
3811
3812 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3813 if (res)
3814 return res;
3815
3816 if (!dev->ops->dump_survey) {
3817 res = -EOPNOTSUPP;
3818 goto out_err;
3819 }
3820
3821 while (1) {
3822 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3823 &survey);
3824 if (res == -ENOENT)
3825 break;
3826 if (res)
3827 goto out_err;
3828
3829 if (nl80211_send_survey(skb,
3830 NETLINK_CB(cb->skb).pid,
3831 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3832 netdev,
3833 &survey) < 0)
3834 goto out;
3835 survey_idx++;
3836 }
3837
3838 out:
3839 cb->args[1] = survey_idx;
3840 res = skb->len;
3841 out_err:
3842 nl80211_finish_netdev_dump(dev);
3843 return res;
3844 }
3845
3846 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3847 {
3848 return auth_type <= NL80211_AUTHTYPE_MAX;
3849 }
3850
3851 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3852 {
3853 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3854 NL80211_WPA_VERSION_2));
3855 }
3856
3857 static bool nl80211_valid_akm_suite(u32 akm)
3858 {
3859 return akm == WLAN_AKM_SUITE_8021X ||
3860 akm == WLAN_AKM_SUITE_PSK;
3861 }
3862
3863 static bool nl80211_valid_cipher_suite(u32 cipher)
3864 {
3865 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3866 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3867 cipher == WLAN_CIPHER_SUITE_TKIP ||
3868 cipher == WLAN_CIPHER_SUITE_CCMP ||
3869 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
3870 }
3871
3872
3873 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3874 {
3875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3876 struct net_device *dev = info->user_ptr[1];
3877 struct ieee80211_channel *chan;
3878 const u8 *bssid, *ssid, *ie = NULL;
3879 int err, ssid_len, ie_len = 0;
3880 enum nl80211_auth_type auth_type;
3881 struct key_parse key;
3882 bool local_state_change;
3883
3884 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3885 return -EINVAL;
3886
3887 if (!info->attrs[NL80211_ATTR_MAC])
3888 return -EINVAL;
3889
3890 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3891 return -EINVAL;
3892
3893 if (!info->attrs[NL80211_ATTR_SSID])
3894 return -EINVAL;
3895
3896 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3897 return -EINVAL;
3898
3899 err = nl80211_parse_key(info, &key);
3900 if (err)
3901 return err;
3902
3903 if (key.idx >= 0) {
3904 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3905 return -EINVAL;
3906 if (!key.p.key || !key.p.key_len)
3907 return -EINVAL;
3908 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3909 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3910 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3911 key.p.key_len != WLAN_KEY_LEN_WEP104))
3912 return -EINVAL;
3913 if (key.idx > 4)
3914 return -EINVAL;
3915 } else {
3916 key.p.key_len = 0;
3917 key.p.key = NULL;
3918 }
3919
3920 if (key.idx >= 0) {
3921 int i;
3922 bool ok = false;
3923 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3924 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3925 ok = true;
3926 break;
3927 }
3928 }
3929 if (!ok)
3930 return -EINVAL;
3931 }
3932
3933 if (!rdev->ops->auth)
3934 return -EOPNOTSUPP;
3935
3936 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
3937 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3938 return -EOPNOTSUPP;
3939
3940 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3941 chan = ieee80211_get_channel(&rdev->wiphy,
3942 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3943 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3944 return -EINVAL;
3945
3946 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3947 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3948
3949 if (info->attrs[NL80211_ATTR_IE]) {
3950 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3951 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3952 }
3953
3954 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
3955 if (!nl80211_valid_auth_type(auth_type))
3956 return -EINVAL;
3957
3958 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3959
3960 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3961 ssid, ssid_len, ie, ie_len,
3962 key.p.key, key.p.key_len, key.idx,
3963 local_state_change);
3964 }
3965
3966 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3967 struct genl_info *info,
3968 struct cfg80211_crypto_settings *settings,
3969 int cipher_limit)
3970 {
3971 memset(settings, 0, sizeof(*settings));
3972
3973 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3974
3975 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3976 u16 proto;
3977 proto = nla_get_u16(
3978 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3979 settings->control_port_ethertype = cpu_to_be16(proto);
3980 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3981 proto != ETH_P_PAE)
3982 return -EINVAL;
3983 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3984 settings->control_port_no_encrypt = true;
3985 } else
3986 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3987
3988 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3989 void *data;
3990 int len, i;
3991
3992 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3993 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3994 settings->n_ciphers_pairwise = len / sizeof(u32);
3995
3996 if (len % sizeof(u32))
3997 return -EINVAL;
3998
3999 if (settings->n_ciphers_pairwise > cipher_limit)
4000 return -EINVAL;
4001
4002 memcpy(settings->ciphers_pairwise, data, len);
4003
4004 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4005 if (!nl80211_valid_cipher_suite(
4006 settings->ciphers_pairwise[i]))
4007 return -EINVAL;
4008 }
4009
4010 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4011 settings->cipher_group =
4012 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4013 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4014 return -EINVAL;
4015 }
4016
4017 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4018 settings->wpa_versions =
4019 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4020 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4021 return -EINVAL;
4022 }
4023
4024 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4025 void *data;
4026 int len, i;
4027
4028 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4029 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4030 settings->n_akm_suites = len / sizeof(u32);
4031
4032 if (len % sizeof(u32))
4033 return -EINVAL;
4034
4035 memcpy(settings->akm_suites, data, len);
4036
4037 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4038 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4039 return -EINVAL;
4040 }
4041
4042 return 0;
4043 }
4044
4045 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4046 {
4047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4048 struct net_device *dev = info->user_ptr[1];
4049 struct cfg80211_crypto_settings crypto;
4050 struct ieee80211_channel *chan;
4051 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4052 int err, ssid_len, ie_len = 0;
4053 bool use_mfp = false;
4054
4055 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4056 return -EINVAL;
4057
4058 if (!info->attrs[NL80211_ATTR_MAC] ||
4059 !info->attrs[NL80211_ATTR_SSID] ||
4060 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4061 return -EINVAL;
4062
4063 if (!rdev->ops->assoc)
4064 return -EOPNOTSUPP;
4065
4066 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4067 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4068 return -EOPNOTSUPP;
4069
4070 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4071
4072 chan = ieee80211_get_channel(&rdev->wiphy,
4073 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4074 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4075 return -EINVAL;
4076
4077 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4078 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4079
4080 if (info->attrs[NL80211_ATTR_IE]) {
4081 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4082 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4083 }
4084
4085 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4086 enum nl80211_mfp mfp =
4087 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4088 if (mfp == NL80211_MFP_REQUIRED)
4089 use_mfp = true;
4090 else if (mfp != NL80211_MFP_NO)
4091 return -EINVAL;
4092 }
4093
4094 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4095 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4096
4097 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4098 if (!err)
4099 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4100 ssid, ssid_len, ie, ie_len, use_mfp,
4101 &crypto);
4102
4103 return err;
4104 }
4105
4106 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4107 {
4108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4109 struct net_device *dev = info->user_ptr[1];
4110 const u8 *ie = NULL, *bssid;
4111 int ie_len = 0;
4112 u16 reason_code;
4113 bool local_state_change;
4114
4115 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4116 return -EINVAL;
4117
4118 if (!info->attrs[NL80211_ATTR_MAC])
4119 return -EINVAL;
4120
4121 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4122 return -EINVAL;
4123
4124 if (!rdev->ops->deauth)
4125 return -EOPNOTSUPP;
4126
4127 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4128 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4129 return -EOPNOTSUPP;
4130
4131 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4132
4133 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4134 if (reason_code == 0) {
4135 /* Reason Code 0 is reserved */
4136 return -EINVAL;
4137 }
4138
4139 if (info->attrs[NL80211_ATTR_IE]) {
4140 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4141 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4142 }
4143
4144 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4145
4146 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4147 local_state_change);
4148 }
4149
4150 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4151 {
4152 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4153 struct net_device *dev = info->user_ptr[1];
4154 const u8 *ie = NULL, *bssid;
4155 int ie_len = 0;
4156 u16 reason_code;
4157 bool local_state_change;
4158
4159 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4160 return -EINVAL;
4161
4162 if (!info->attrs[NL80211_ATTR_MAC])
4163 return -EINVAL;
4164
4165 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4166 return -EINVAL;
4167
4168 if (!rdev->ops->disassoc)
4169 return -EOPNOTSUPP;
4170
4171 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4172 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4173 return -EOPNOTSUPP;
4174
4175 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4176
4177 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4178 if (reason_code == 0) {
4179 /* Reason Code 0 is reserved */
4180 return -EINVAL;
4181 }
4182
4183 if (info->attrs[NL80211_ATTR_IE]) {
4184 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4185 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4186 }
4187
4188 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4189
4190 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4191 local_state_change);
4192 }
4193
4194 static bool
4195 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4196 int mcast_rate[IEEE80211_NUM_BANDS],
4197 int rateval)
4198 {
4199 struct wiphy *wiphy = &rdev->wiphy;
4200 bool found = false;
4201 int band, i;
4202
4203 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4204 struct ieee80211_supported_band *sband;
4205
4206 sband = wiphy->bands[band];
4207 if (!sband)
4208 continue;
4209
4210 for (i = 0; i < sband->n_bitrates; i++) {
4211 if (sband->bitrates[i].bitrate == rateval) {
4212 mcast_rate[band] = i + 1;
4213 found = true;
4214 break;
4215 }
4216 }
4217 }
4218
4219 return found;
4220 }
4221
4222 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4223 {
4224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4225 struct net_device *dev = info->user_ptr[1];
4226 struct cfg80211_ibss_params ibss;
4227 struct wiphy *wiphy;
4228 struct cfg80211_cached_keys *connkeys = NULL;
4229 int err;
4230
4231 memset(&ibss, 0, sizeof(ibss));
4232
4233 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4234 return -EINVAL;
4235
4236 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4237 !info->attrs[NL80211_ATTR_SSID] ||
4238 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4239 return -EINVAL;
4240
4241 ibss.beacon_interval = 100;
4242
4243 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4244 ibss.beacon_interval =
4245 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4246 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4247 return -EINVAL;
4248 }
4249
4250 if (!rdev->ops->join_ibss)
4251 return -EOPNOTSUPP;
4252
4253 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4254 return -EOPNOTSUPP;
4255
4256 wiphy = &rdev->wiphy;
4257
4258 if (info->attrs[NL80211_ATTR_MAC])
4259 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4260 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4261 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4262
4263 if (info->attrs[NL80211_ATTR_IE]) {
4264 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4265 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4266 }
4267
4268 ibss.channel = ieee80211_get_channel(wiphy,
4269 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4270 if (!ibss.channel ||
4271 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4272 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4273 return -EINVAL;
4274
4275 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4276 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4277
4278 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4279 u8 *rates =
4280 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4281 int n_rates =
4282 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4283 struct ieee80211_supported_band *sband =
4284 wiphy->bands[ibss.channel->band];
4285 int i, j;
4286
4287 if (n_rates == 0)
4288 return -EINVAL;
4289
4290 for (i = 0; i < n_rates; i++) {
4291 int rate = (rates[i] & 0x7f) * 5;
4292 bool found = false;
4293
4294 for (j = 0; j < sband->n_bitrates; j++) {
4295 if (sband->bitrates[j].bitrate == rate) {
4296 found = true;
4297 ibss.basic_rates |= BIT(j);
4298 break;
4299 }
4300 }
4301 if (!found)
4302 return -EINVAL;
4303 }
4304 }
4305
4306 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4307 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4308 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4309 return -EINVAL;
4310
4311 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4312 connkeys = nl80211_parse_connkeys(rdev,
4313 info->attrs[NL80211_ATTR_KEYS]);
4314 if (IS_ERR(connkeys))
4315 return PTR_ERR(connkeys);
4316 }
4317
4318 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4319 if (err)
4320 kfree(connkeys);
4321 return err;
4322 }
4323
4324 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4325 {
4326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4327 struct net_device *dev = info->user_ptr[1];
4328
4329 if (!rdev->ops->leave_ibss)
4330 return -EOPNOTSUPP;
4331
4332 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4333 return -EOPNOTSUPP;
4334
4335 return cfg80211_leave_ibss(rdev, dev, false);
4336 }
4337
4338 #ifdef CONFIG_NL80211_TESTMODE
4339 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4340 .name = "testmode",
4341 };
4342
4343 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4344 {
4345 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4346 int err;
4347
4348 if (!info->attrs[NL80211_ATTR_TESTDATA])
4349 return -EINVAL;
4350
4351 err = -EOPNOTSUPP;
4352 if (rdev->ops->testmode_cmd) {
4353 rdev->testmode_info = info;
4354 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4355 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4356 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4357 rdev->testmode_info = NULL;
4358 }
4359
4360 return err;
4361 }
4362
4363 static struct sk_buff *
4364 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4365 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4366 {
4367 struct sk_buff *skb;
4368 void *hdr;
4369 struct nlattr *data;
4370
4371 skb = nlmsg_new(approxlen + 100, gfp);
4372 if (!skb)
4373 return NULL;
4374
4375 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4376 if (!hdr) {
4377 kfree_skb(skb);
4378 return NULL;
4379 }
4380
4381 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4382 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4383
4384 ((void **)skb->cb)[0] = rdev;
4385 ((void **)skb->cb)[1] = hdr;
4386 ((void **)skb->cb)[2] = data;
4387
4388 return skb;
4389
4390 nla_put_failure:
4391 kfree_skb(skb);
4392 return NULL;
4393 }
4394
4395 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4396 int approxlen)
4397 {
4398 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4399
4400 if (WARN_ON(!rdev->testmode_info))
4401 return NULL;
4402
4403 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4404 rdev->testmode_info->snd_pid,
4405 rdev->testmode_info->snd_seq,
4406 GFP_KERNEL);
4407 }
4408 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4409
4410 int cfg80211_testmode_reply(struct sk_buff *skb)
4411 {
4412 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4413 void *hdr = ((void **)skb->cb)[1];
4414 struct nlattr *data = ((void **)skb->cb)[2];
4415
4416 if (WARN_ON(!rdev->testmode_info)) {
4417 kfree_skb(skb);
4418 return -EINVAL;
4419 }
4420
4421 nla_nest_end(skb, data);
4422 genlmsg_end(skb, hdr);
4423 return genlmsg_reply(skb, rdev->testmode_info);
4424 }
4425 EXPORT_SYMBOL(cfg80211_testmode_reply);
4426
4427 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4428 int approxlen, gfp_t gfp)
4429 {
4430 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4431
4432 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4433 }
4434 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4435
4436 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4437 {
4438 void *hdr = ((void **)skb->cb)[1];
4439 struct nlattr *data = ((void **)skb->cb)[2];
4440
4441 nla_nest_end(skb, data);
4442 genlmsg_end(skb, hdr);
4443 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4444 }
4445 EXPORT_SYMBOL(cfg80211_testmode_event);
4446 #endif
4447
4448 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4449 {
4450 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4451 struct net_device *dev = info->user_ptr[1];
4452 struct cfg80211_connect_params connect;
4453 struct wiphy *wiphy;
4454 struct cfg80211_cached_keys *connkeys = NULL;
4455 int err;
4456
4457 memset(&connect, 0, sizeof(connect));
4458
4459 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4460 return -EINVAL;
4461
4462 if (!info->attrs[NL80211_ATTR_SSID] ||
4463 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4464 return -EINVAL;
4465
4466 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4467 connect.auth_type =
4468 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4469 if (!nl80211_valid_auth_type(connect.auth_type))
4470 return -EINVAL;
4471 } else
4472 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4473
4474 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4475
4476 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4477 NL80211_MAX_NR_CIPHER_SUITES);
4478 if (err)
4479 return err;
4480
4481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4482 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4483 return -EOPNOTSUPP;
4484
4485 wiphy = &rdev->wiphy;
4486
4487 if (info->attrs[NL80211_ATTR_MAC])
4488 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4489 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4490 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4491
4492 if (info->attrs[NL80211_ATTR_IE]) {
4493 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4494 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4495 }
4496
4497 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4498 connect.channel =
4499 ieee80211_get_channel(wiphy,
4500 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4501 if (!connect.channel ||
4502 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4503 return -EINVAL;
4504 }
4505
4506 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4507 connkeys = nl80211_parse_connkeys(rdev,
4508 info->attrs[NL80211_ATTR_KEYS]);
4509 if (IS_ERR(connkeys))
4510 return PTR_ERR(connkeys);
4511 }
4512
4513 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4514 if (err)
4515 kfree(connkeys);
4516 return err;
4517 }
4518
4519 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4520 {
4521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4522 struct net_device *dev = info->user_ptr[1];
4523 u16 reason;
4524
4525 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4526 reason = WLAN_REASON_DEAUTH_LEAVING;
4527 else
4528 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4529
4530 if (reason == 0)
4531 return -EINVAL;
4532
4533 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4534 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4535 return -EOPNOTSUPP;
4536
4537 return cfg80211_disconnect(rdev, dev, reason, true);
4538 }
4539
4540 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4541 {
4542 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4543 struct net *net;
4544 int err;
4545 u32 pid;
4546
4547 if (!info->attrs[NL80211_ATTR_PID])
4548 return -EINVAL;
4549
4550 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4551
4552 net = get_net_ns_by_pid(pid);
4553 if (IS_ERR(net))
4554 return PTR_ERR(net);
4555
4556 err = 0;
4557
4558 /* check if anything to do */
4559 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4560 err = cfg80211_switch_netns(rdev, net);
4561
4562 put_net(net);
4563 return err;
4564 }
4565
4566 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4567 {
4568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4569 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4570 struct cfg80211_pmksa *pmksa) = NULL;
4571 struct net_device *dev = info->user_ptr[1];
4572 struct cfg80211_pmksa pmksa;
4573
4574 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4575
4576 if (!info->attrs[NL80211_ATTR_MAC])
4577 return -EINVAL;
4578
4579 if (!info->attrs[NL80211_ATTR_PMKID])
4580 return -EINVAL;
4581
4582 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4583 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4584
4585 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4586 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4587 return -EOPNOTSUPP;
4588
4589 switch (info->genlhdr->cmd) {
4590 case NL80211_CMD_SET_PMKSA:
4591 rdev_ops = rdev->ops->set_pmksa;
4592 break;
4593 case NL80211_CMD_DEL_PMKSA:
4594 rdev_ops = rdev->ops->del_pmksa;
4595 break;
4596 default:
4597 WARN_ON(1);
4598 break;
4599 }
4600
4601 if (!rdev_ops)
4602 return -EOPNOTSUPP;
4603
4604 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4605 }
4606
4607 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4608 {
4609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4610 struct net_device *dev = info->user_ptr[1];
4611
4612 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4613 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4614 return -EOPNOTSUPP;
4615
4616 if (!rdev->ops->flush_pmksa)
4617 return -EOPNOTSUPP;
4618
4619 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4620 }
4621
4622 static int nl80211_remain_on_channel(struct sk_buff *skb,
4623 struct genl_info *info)
4624 {
4625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4626 struct net_device *dev = info->user_ptr[1];
4627 struct ieee80211_channel *chan;
4628 struct sk_buff *msg;
4629 void *hdr;
4630 u64 cookie;
4631 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4632 u32 freq, duration;
4633 int err;
4634
4635 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4636 !info->attrs[NL80211_ATTR_DURATION])
4637 return -EINVAL;
4638
4639 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4640
4641 /*
4642 * We should be on that channel for at least one jiffie,
4643 * and more than 5 seconds seems excessive.
4644 */
4645 if (!duration || !msecs_to_jiffies(duration) ||
4646 duration > rdev->wiphy.max_remain_on_channel_duration)
4647 return -EINVAL;
4648
4649 if (!rdev->ops->remain_on_channel)
4650 return -EOPNOTSUPP;
4651
4652 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4653 channel_type = nla_get_u32(
4654 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4655 if (channel_type != NL80211_CHAN_NO_HT &&
4656 channel_type != NL80211_CHAN_HT20 &&
4657 channel_type != NL80211_CHAN_HT40PLUS &&
4658 channel_type != NL80211_CHAN_HT40MINUS)
4659 return -EINVAL;
4660 }
4661
4662 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4663 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4664 if (chan == NULL)
4665 return -EINVAL;
4666
4667 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4668 if (!msg)
4669 return -ENOMEM;
4670
4671 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4672 NL80211_CMD_REMAIN_ON_CHANNEL);
4673
4674 if (IS_ERR(hdr)) {
4675 err = PTR_ERR(hdr);
4676 goto free_msg;
4677 }
4678
4679 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4680 channel_type, duration, &cookie);
4681
4682 if (err)
4683 goto free_msg;
4684
4685 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4686
4687 genlmsg_end(msg, hdr);
4688
4689 return genlmsg_reply(msg, info);
4690
4691 nla_put_failure:
4692 err = -ENOBUFS;
4693 free_msg:
4694 nlmsg_free(msg);
4695 return err;
4696 }
4697
4698 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4699 struct genl_info *info)
4700 {
4701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4702 struct net_device *dev = info->user_ptr[1];
4703 u64 cookie;
4704
4705 if (!info->attrs[NL80211_ATTR_COOKIE])
4706 return -EINVAL;
4707
4708 if (!rdev->ops->cancel_remain_on_channel)
4709 return -EOPNOTSUPP;
4710
4711 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4712
4713 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4714 }
4715
4716 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4717 u8 *rates, u8 rates_len)
4718 {
4719 u8 i;
4720 u32 mask = 0;
4721
4722 for (i = 0; i < rates_len; i++) {
4723 int rate = (rates[i] & 0x7f) * 5;
4724 int ridx;
4725 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4726 struct ieee80211_rate *srate =
4727 &sband->bitrates[ridx];
4728 if (rate == srate->bitrate) {
4729 mask |= 1 << ridx;
4730 break;
4731 }
4732 }
4733 if (ridx == sband->n_bitrates)
4734 return 0; /* rate not found */
4735 }
4736
4737 return mask;
4738 }
4739
4740 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4741 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4742 .len = NL80211_MAX_SUPP_RATES },
4743 };
4744
4745 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4746 struct genl_info *info)
4747 {
4748 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4750 struct cfg80211_bitrate_mask mask;
4751 int rem, i;
4752 struct net_device *dev = info->user_ptr[1];
4753 struct nlattr *tx_rates;
4754 struct ieee80211_supported_band *sband;
4755
4756 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4757 return -EINVAL;
4758
4759 if (!rdev->ops->set_bitrate_mask)
4760 return -EOPNOTSUPP;
4761
4762 memset(&mask, 0, sizeof(mask));
4763 /* Default to all rates enabled */
4764 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4765 sband = rdev->wiphy.bands[i];
4766 mask.control[i].legacy =
4767 sband ? (1 << sband->n_bitrates) - 1 : 0;
4768 }
4769
4770 /*
4771 * The nested attribute uses enum nl80211_band as the index. This maps
4772 * directly to the enum ieee80211_band values used in cfg80211.
4773 */
4774 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4775 {
4776 enum ieee80211_band band = nla_type(tx_rates);
4777 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4778 return -EINVAL;
4779 sband = rdev->wiphy.bands[band];
4780 if (sband == NULL)
4781 return -EINVAL;
4782 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4783 nla_len(tx_rates), nl80211_txattr_policy);
4784 if (tb[NL80211_TXRATE_LEGACY]) {
4785 mask.control[band].legacy = rateset_to_mask(
4786 sband,
4787 nla_data(tb[NL80211_TXRATE_LEGACY]),
4788 nla_len(tb[NL80211_TXRATE_LEGACY]));
4789 if (mask.control[band].legacy == 0)
4790 return -EINVAL;
4791 }
4792 }
4793
4794 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
4795 }
4796
4797 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
4798 {
4799 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4800 struct net_device *dev = info->user_ptr[1];
4801 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
4802
4803 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4804 return -EINVAL;
4805
4806 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4807 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
4808
4809 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4810 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4811 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4812 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4813 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4814 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4815 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4816 return -EOPNOTSUPP;
4817
4818 /* not much point in registering if we can't reply */
4819 if (!rdev->ops->mgmt_tx)
4820 return -EOPNOTSUPP;
4821
4822 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
4823 frame_type,
4824 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4825 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
4826 }
4827
4828 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
4829 {
4830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4831 struct net_device *dev = info->user_ptr[1];
4832 struct ieee80211_channel *chan;
4833 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4834 bool channel_type_valid = false;
4835 u32 freq;
4836 int err;
4837 void *hdr;
4838 u64 cookie;
4839 struct sk_buff *msg;
4840 unsigned int wait = 0;
4841 bool offchan;
4842
4843 if (!info->attrs[NL80211_ATTR_FRAME] ||
4844 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4845 return -EINVAL;
4846
4847 if (!rdev->ops->mgmt_tx)
4848 return -EOPNOTSUPP;
4849
4850 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4851 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4852 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4853 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4854 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4855 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4856 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4857 return -EOPNOTSUPP;
4858
4859 if (info->attrs[NL80211_ATTR_DURATION]) {
4860 if (!rdev->ops->mgmt_tx_cancel_wait)
4861 return -EINVAL;
4862 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4863 }
4864
4865 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4866 channel_type = nla_get_u32(
4867 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4868 if (channel_type != NL80211_CHAN_NO_HT &&
4869 channel_type != NL80211_CHAN_HT20 &&
4870 channel_type != NL80211_CHAN_HT40PLUS &&
4871 channel_type != NL80211_CHAN_HT40MINUS)
4872 return -EINVAL;
4873 channel_type_valid = true;
4874 }
4875
4876 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4877
4878 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4879 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4880 if (chan == NULL)
4881 return -EINVAL;
4882
4883 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4884 if (!msg)
4885 return -ENOMEM;
4886
4887 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4888 NL80211_CMD_FRAME);
4889
4890 if (IS_ERR(hdr)) {
4891 err = PTR_ERR(hdr);
4892 goto free_msg;
4893 }
4894 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4895 channel_type_valid, wait,
4896 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4897 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4898 &cookie);
4899 if (err)
4900 goto free_msg;
4901
4902 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4903
4904 genlmsg_end(msg, hdr);
4905 return genlmsg_reply(msg, info);
4906
4907 nla_put_failure:
4908 err = -ENOBUFS;
4909 free_msg:
4910 nlmsg_free(msg);
4911 return err;
4912 }
4913
4914 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4915 {
4916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4917 struct net_device *dev = info->user_ptr[1];
4918 u64 cookie;
4919
4920 if (!info->attrs[NL80211_ATTR_COOKIE])
4921 return -EINVAL;
4922
4923 if (!rdev->ops->mgmt_tx_cancel_wait)
4924 return -EOPNOTSUPP;
4925
4926 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4927 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4928 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4929 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4930 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4931 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4932 return -EOPNOTSUPP;
4933
4934 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4935
4936 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4937 }
4938
4939 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4940 {
4941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4942 struct wireless_dev *wdev;
4943 struct net_device *dev = info->user_ptr[1];
4944 u8 ps_state;
4945 bool state;
4946 int err;
4947
4948 if (!info->attrs[NL80211_ATTR_PS_STATE])
4949 return -EINVAL;
4950
4951 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4952
4953 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4954 return -EINVAL;
4955
4956 wdev = dev->ieee80211_ptr;
4957
4958 if (!rdev->ops->set_power_mgmt)
4959 return -EOPNOTSUPP;
4960
4961 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4962
4963 if (state == wdev->ps)
4964 return 0;
4965
4966 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4967 wdev->ps_timeout);
4968 if (!err)
4969 wdev->ps = state;
4970 return err;
4971 }
4972
4973 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4974 {
4975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4976 enum nl80211_ps_state ps_state;
4977 struct wireless_dev *wdev;
4978 struct net_device *dev = info->user_ptr[1];
4979 struct sk_buff *msg;
4980 void *hdr;
4981 int err;
4982
4983 wdev = dev->ieee80211_ptr;
4984
4985 if (!rdev->ops->set_power_mgmt)
4986 return -EOPNOTSUPP;
4987
4988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4989 if (!msg)
4990 return -ENOMEM;
4991
4992 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4993 NL80211_CMD_GET_POWER_SAVE);
4994 if (!hdr) {
4995 err = -ENOBUFS;
4996 goto free_msg;
4997 }
4998
4999 if (wdev->ps)
5000 ps_state = NL80211_PS_ENABLED;
5001 else
5002 ps_state = NL80211_PS_DISABLED;
5003
5004 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5005
5006 genlmsg_end(msg, hdr);
5007 return genlmsg_reply(msg, info);
5008
5009 nla_put_failure:
5010 err = -ENOBUFS;
5011 free_msg:
5012 nlmsg_free(msg);
5013 return err;
5014 }
5015
5016 static struct nla_policy
5017 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5018 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5019 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5020 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5021 };
5022
5023 static int nl80211_set_cqm_rssi(struct genl_info *info,
5024 s32 threshold, u32 hysteresis)
5025 {
5026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5027 struct wireless_dev *wdev;
5028 struct net_device *dev = info->user_ptr[1];
5029
5030 if (threshold > 0)
5031 return -EINVAL;
5032
5033 wdev = dev->ieee80211_ptr;
5034
5035 if (!rdev->ops->set_cqm_rssi_config)
5036 return -EOPNOTSUPP;
5037
5038 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5039 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5040 return -EOPNOTSUPP;
5041
5042 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5043 threshold, hysteresis);
5044 }
5045
5046 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5047 {
5048 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5049 struct nlattr *cqm;
5050 int err;
5051
5052 cqm = info->attrs[NL80211_ATTR_CQM];
5053 if (!cqm) {
5054 err = -EINVAL;
5055 goto out;
5056 }
5057
5058 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5059 nl80211_attr_cqm_policy);
5060 if (err)
5061 goto out;
5062
5063 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5064 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5065 s32 threshold;
5066 u32 hysteresis;
5067 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5068 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5069 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5070 } else
5071 err = -EINVAL;
5072
5073 out:
5074 return err;
5075 }
5076
5077 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5078 {
5079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5080 struct net_device *dev = info->user_ptr[1];
5081 struct mesh_config cfg;
5082 struct mesh_setup setup;
5083 int err;
5084
5085 /* start with default */
5086 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5087 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5088
5089 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5090 /* and parse parameters if given */
5091 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5092 if (err)
5093 return err;
5094 }
5095
5096 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5097 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5098 return -EINVAL;
5099
5100 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5101 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5102
5103 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5104 /* parse additional setup parameters if given */
5105 err = nl80211_parse_mesh_setup(info, &setup);
5106 if (err)
5107 return err;
5108 }
5109
5110 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5111 }
5112
5113 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5114 {
5115 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5116 struct net_device *dev = info->user_ptr[1];
5117
5118 return cfg80211_leave_mesh(rdev, dev);
5119 }
5120
5121 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5122 {
5123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5124 struct sk_buff *msg;
5125 void *hdr;
5126
5127 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5128 return -EOPNOTSUPP;
5129
5130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5131 if (!msg)
5132 return -ENOMEM;
5133
5134 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5135 NL80211_CMD_GET_WOWLAN);
5136 if (!hdr)
5137 goto nla_put_failure;
5138
5139 if (rdev->wowlan) {
5140 struct nlattr *nl_wowlan;
5141
5142 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5143 if (!nl_wowlan)
5144 goto nla_put_failure;
5145
5146 if (rdev->wowlan->any)
5147 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5148 if (rdev->wowlan->disconnect)
5149 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5150 if (rdev->wowlan->magic_pkt)
5151 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5152 if (rdev->wowlan->n_patterns) {
5153 struct nlattr *nl_pats, *nl_pat;
5154 int i, pat_len;
5155
5156 nl_pats = nla_nest_start(msg,
5157 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5158 if (!nl_pats)
5159 goto nla_put_failure;
5160
5161 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5162 nl_pat = nla_nest_start(msg, i + 1);
5163 if (!nl_pat)
5164 goto nla_put_failure;
5165 pat_len = rdev->wowlan->patterns[i].pattern_len;
5166 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5167 DIV_ROUND_UP(pat_len, 8),
5168 rdev->wowlan->patterns[i].mask);
5169 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5170 pat_len,
5171 rdev->wowlan->patterns[i].pattern);
5172 nla_nest_end(msg, nl_pat);
5173 }
5174 nla_nest_end(msg, nl_pats);
5175 }
5176
5177 nla_nest_end(msg, nl_wowlan);
5178 }
5179
5180 genlmsg_end(msg, hdr);
5181 return genlmsg_reply(msg, info);
5182
5183 nla_put_failure:
5184 nlmsg_free(msg);
5185 return -ENOBUFS;
5186 }
5187
5188 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5189 {
5190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5191 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5192 struct cfg80211_wowlan no_triggers = {};
5193 struct cfg80211_wowlan new_triggers = {};
5194 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5195 int err, i;
5196
5197 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5198 return -EOPNOTSUPP;
5199
5200 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5201 goto no_triggers;
5202
5203 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5204 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5205 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5206 nl80211_wowlan_policy);
5207 if (err)
5208 return err;
5209
5210 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5211 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5212 return -EINVAL;
5213 new_triggers.any = true;
5214 }
5215
5216 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5217 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5218 return -EINVAL;
5219 new_triggers.disconnect = true;
5220 }
5221
5222 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5223 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5224 return -EINVAL;
5225 new_triggers.magic_pkt = true;
5226 }
5227
5228 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5229 struct nlattr *pat;
5230 int n_patterns = 0;
5231 int rem, pat_len, mask_len;
5232 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5233
5234 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5235 rem)
5236 n_patterns++;
5237 if (n_patterns > wowlan->n_patterns)
5238 return -EINVAL;
5239
5240 new_triggers.patterns = kcalloc(n_patterns,
5241 sizeof(new_triggers.patterns[0]),
5242 GFP_KERNEL);
5243 if (!new_triggers.patterns)
5244 return -ENOMEM;
5245
5246 new_triggers.n_patterns = n_patterns;
5247 i = 0;
5248
5249 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5250 rem) {
5251 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5252 nla_data(pat), nla_len(pat), NULL);
5253 err = -EINVAL;
5254 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5255 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5256 goto error;
5257 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5258 mask_len = DIV_ROUND_UP(pat_len, 8);
5259 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5260 mask_len)
5261 goto error;
5262 if (pat_len > wowlan->pattern_max_len ||
5263 pat_len < wowlan->pattern_min_len)
5264 goto error;
5265
5266 new_triggers.patterns[i].mask =
5267 kmalloc(mask_len + pat_len, GFP_KERNEL);
5268 if (!new_triggers.patterns[i].mask) {
5269 err = -ENOMEM;
5270 goto error;
5271 }
5272 new_triggers.patterns[i].pattern =
5273 new_triggers.patterns[i].mask + mask_len;
5274 memcpy(new_triggers.patterns[i].mask,
5275 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5276 mask_len);
5277 new_triggers.patterns[i].pattern_len = pat_len;
5278 memcpy(new_triggers.patterns[i].pattern,
5279 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5280 pat_len);
5281 i++;
5282 }
5283 }
5284
5285 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5286 struct cfg80211_wowlan *ntrig;
5287 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5288 GFP_KERNEL);
5289 if (!ntrig) {
5290 err = -ENOMEM;
5291 goto error;
5292 }
5293 cfg80211_rdev_free_wowlan(rdev);
5294 rdev->wowlan = ntrig;
5295 } else {
5296 no_triggers:
5297 cfg80211_rdev_free_wowlan(rdev);
5298 rdev->wowlan = NULL;
5299 }
5300
5301 return 0;
5302 error:
5303 for (i = 0; i < new_triggers.n_patterns; i++)
5304 kfree(new_triggers.patterns[i].mask);
5305 kfree(new_triggers.patterns);
5306 return err;
5307 }
5308
5309 #define NL80211_FLAG_NEED_WIPHY 0x01
5310 #define NL80211_FLAG_NEED_NETDEV 0x02
5311 #define NL80211_FLAG_NEED_RTNL 0x04
5312 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5313 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5314 NL80211_FLAG_CHECK_NETDEV_UP)
5315
5316 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5317 struct genl_info *info)
5318 {
5319 struct cfg80211_registered_device *rdev;
5320 struct net_device *dev;
5321 int err;
5322 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5323
5324 if (rtnl)
5325 rtnl_lock();
5326
5327 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5328 rdev = cfg80211_get_dev_from_info(info);
5329 if (IS_ERR(rdev)) {
5330 if (rtnl)
5331 rtnl_unlock();
5332 return PTR_ERR(rdev);
5333 }
5334 info->user_ptr[0] = rdev;
5335 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5336 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5337 if (err) {
5338 if (rtnl)
5339 rtnl_unlock();
5340 return err;
5341 }
5342 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5343 !netif_running(dev)) {
5344 cfg80211_unlock_rdev(rdev);
5345 dev_put(dev);
5346 if (rtnl)
5347 rtnl_unlock();
5348 return -ENETDOWN;
5349 }
5350 info->user_ptr[0] = rdev;
5351 info->user_ptr[1] = dev;
5352 }
5353
5354 return 0;
5355 }
5356
5357 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5358 struct genl_info *info)
5359 {
5360 if (info->user_ptr[0])
5361 cfg80211_unlock_rdev(info->user_ptr[0]);
5362 if (info->user_ptr[1])
5363 dev_put(info->user_ptr[1]);
5364 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5365 rtnl_unlock();
5366 }
5367
5368 static struct genl_ops nl80211_ops[] = {
5369 {
5370 .cmd = NL80211_CMD_GET_WIPHY,
5371 .doit = nl80211_get_wiphy,
5372 .dumpit = nl80211_dump_wiphy,
5373 .policy = nl80211_policy,
5374 /* can be retrieved by unprivileged users */
5375 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5376 },
5377 {
5378 .cmd = NL80211_CMD_SET_WIPHY,
5379 .doit = nl80211_set_wiphy,
5380 .policy = nl80211_policy,
5381 .flags = GENL_ADMIN_PERM,
5382 .internal_flags = NL80211_FLAG_NEED_RTNL,
5383 },
5384 {
5385 .cmd = NL80211_CMD_GET_INTERFACE,
5386 .doit = nl80211_get_interface,
5387 .dumpit = nl80211_dump_interface,
5388 .policy = nl80211_policy,
5389 /* can be retrieved by unprivileged users */
5390 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5391 },
5392 {
5393 .cmd = NL80211_CMD_SET_INTERFACE,
5394 .doit = nl80211_set_interface,
5395 .policy = nl80211_policy,
5396 .flags = GENL_ADMIN_PERM,
5397 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5398 NL80211_FLAG_NEED_RTNL,
5399 },
5400 {
5401 .cmd = NL80211_CMD_NEW_INTERFACE,
5402 .doit = nl80211_new_interface,
5403 .policy = nl80211_policy,
5404 .flags = GENL_ADMIN_PERM,
5405 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5406 NL80211_FLAG_NEED_RTNL,
5407 },
5408 {
5409 .cmd = NL80211_CMD_DEL_INTERFACE,
5410 .doit = nl80211_del_interface,
5411 .policy = nl80211_policy,
5412 .flags = GENL_ADMIN_PERM,
5413 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5414 NL80211_FLAG_NEED_RTNL,
5415 },
5416 {
5417 .cmd = NL80211_CMD_GET_KEY,
5418 .doit = nl80211_get_key,
5419 .policy = nl80211_policy,
5420 .flags = GENL_ADMIN_PERM,
5421 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5422 NL80211_FLAG_NEED_RTNL,
5423 },
5424 {
5425 .cmd = NL80211_CMD_SET_KEY,
5426 .doit = nl80211_set_key,
5427 .policy = nl80211_policy,
5428 .flags = GENL_ADMIN_PERM,
5429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5430 NL80211_FLAG_NEED_RTNL,
5431 },
5432 {
5433 .cmd = NL80211_CMD_NEW_KEY,
5434 .doit = nl80211_new_key,
5435 .policy = nl80211_policy,
5436 .flags = GENL_ADMIN_PERM,
5437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5438 NL80211_FLAG_NEED_RTNL,
5439 },
5440 {
5441 .cmd = NL80211_CMD_DEL_KEY,
5442 .doit = nl80211_del_key,
5443 .policy = nl80211_policy,
5444 .flags = GENL_ADMIN_PERM,
5445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5446 NL80211_FLAG_NEED_RTNL,
5447 },
5448 {
5449 .cmd = NL80211_CMD_SET_BEACON,
5450 .policy = nl80211_policy,
5451 .flags = GENL_ADMIN_PERM,
5452 .doit = nl80211_addset_beacon,
5453 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5454 NL80211_FLAG_NEED_RTNL,
5455 },
5456 {
5457 .cmd = NL80211_CMD_NEW_BEACON,
5458 .policy = nl80211_policy,
5459 .flags = GENL_ADMIN_PERM,
5460 .doit = nl80211_addset_beacon,
5461 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5462 NL80211_FLAG_NEED_RTNL,
5463 },
5464 {
5465 .cmd = NL80211_CMD_DEL_BEACON,
5466 .policy = nl80211_policy,
5467 .flags = GENL_ADMIN_PERM,
5468 .doit = nl80211_del_beacon,
5469 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5470 NL80211_FLAG_NEED_RTNL,
5471 },
5472 {
5473 .cmd = NL80211_CMD_GET_STATION,
5474 .doit = nl80211_get_station,
5475 .dumpit = nl80211_dump_station,
5476 .policy = nl80211_policy,
5477 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5478 NL80211_FLAG_NEED_RTNL,
5479 },
5480 {
5481 .cmd = NL80211_CMD_SET_STATION,
5482 .doit = nl80211_set_station,
5483 .policy = nl80211_policy,
5484 .flags = GENL_ADMIN_PERM,
5485 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5486 NL80211_FLAG_NEED_RTNL,
5487 },
5488 {
5489 .cmd = NL80211_CMD_NEW_STATION,
5490 .doit = nl80211_new_station,
5491 .policy = nl80211_policy,
5492 .flags = GENL_ADMIN_PERM,
5493 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5494 NL80211_FLAG_NEED_RTNL,
5495 },
5496 {
5497 .cmd = NL80211_CMD_DEL_STATION,
5498 .doit = nl80211_del_station,
5499 .policy = nl80211_policy,
5500 .flags = GENL_ADMIN_PERM,
5501 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5502 NL80211_FLAG_NEED_RTNL,
5503 },
5504 {
5505 .cmd = NL80211_CMD_GET_MPATH,
5506 .doit = nl80211_get_mpath,
5507 .dumpit = nl80211_dump_mpath,
5508 .policy = nl80211_policy,
5509 .flags = GENL_ADMIN_PERM,
5510 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5511 NL80211_FLAG_NEED_RTNL,
5512 },
5513 {
5514 .cmd = NL80211_CMD_SET_MPATH,
5515 .doit = nl80211_set_mpath,
5516 .policy = nl80211_policy,
5517 .flags = GENL_ADMIN_PERM,
5518 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5519 NL80211_FLAG_NEED_RTNL,
5520 },
5521 {
5522 .cmd = NL80211_CMD_NEW_MPATH,
5523 .doit = nl80211_new_mpath,
5524 .policy = nl80211_policy,
5525 .flags = GENL_ADMIN_PERM,
5526 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5527 NL80211_FLAG_NEED_RTNL,
5528 },
5529 {
5530 .cmd = NL80211_CMD_DEL_MPATH,
5531 .doit = nl80211_del_mpath,
5532 .policy = nl80211_policy,
5533 .flags = GENL_ADMIN_PERM,
5534 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5535 NL80211_FLAG_NEED_RTNL,
5536 },
5537 {
5538 .cmd = NL80211_CMD_SET_BSS,
5539 .doit = nl80211_set_bss,
5540 .policy = nl80211_policy,
5541 .flags = GENL_ADMIN_PERM,
5542 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5543 NL80211_FLAG_NEED_RTNL,
5544 },
5545 {
5546 .cmd = NL80211_CMD_GET_REG,
5547 .doit = nl80211_get_reg,
5548 .policy = nl80211_policy,
5549 /* can be retrieved by unprivileged users */
5550 },
5551 {
5552 .cmd = NL80211_CMD_SET_REG,
5553 .doit = nl80211_set_reg,
5554 .policy = nl80211_policy,
5555 .flags = GENL_ADMIN_PERM,
5556 },
5557 {
5558 .cmd = NL80211_CMD_REQ_SET_REG,
5559 .doit = nl80211_req_set_reg,
5560 .policy = nl80211_policy,
5561 .flags = GENL_ADMIN_PERM,
5562 },
5563 {
5564 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5565 .doit = nl80211_get_mesh_config,
5566 .policy = nl80211_policy,
5567 /* can be retrieved by unprivileged users */
5568 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5569 NL80211_FLAG_NEED_RTNL,
5570 },
5571 {
5572 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5573 .doit = nl80211_update_mesh_config,
5574 .policy = nl80211_policy,
5575 .flags = GENL_ADMIN_PERM,
5576 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5577 NL80211_FLAG_NEED_RTNL,
5578 },
5579 {
5580 .cmd = NL80211_CMD_TRIGGER_SCAN,
5581 .doit = nl80211_trigger_scan,
5582 .policy = nl80211_policy,
5583 .flags = GENL_ADMIN_PERM,
5584 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5585 NL80211_FLAG_NEED_RTNL,
5586 },
5587 {
5588 .cmd = NL80211_CMD_GET_SCAN,
5589 .policy = nl80211_policy,
5590 .dumpit = nl80211_dump_scan,
5591 },
5592 {
5593 .cmd = NL80211_CMD_START_SCHED_SCAN,
5594 .doit = nl80211_start_sched_scan,
5595 .policy = nl80211_policy,
5596 .flags = GENL_ADMIN_PERM,
5597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5598 NL80211_FLAG_NEED_RTNL,
5599 },
5600 {
5601 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5602 .doit = nl80211_stop_sched_scan,
5603 .policy = nl80211_policy,
5604 .flags = GENL_ADMIN_PERM,
5605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5606 NL80211_FLAG_NEED_RTNL,
5607 },
5608 {
5609 .cmd = NL80211_CMD_AUTHENTICATE,
5610 .doit = nl80211_authenticate,
5611 .policy = nl80211_policy,
5612 .flags = GENL_ADMIN_PERM,
5613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5614 NL80211_FLAG_NEED_RTNL,
5615 },
5616 {
5617 .cmd = NL80211_CMD_ASSOCIATE,
5618 .doit = nl80211_associate,
5619 .policy = nl80211_policy,
5620 .flags = GENL_ADMIN_PERM,
5621 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5622 NL80211_FLAG_NEED_RTNL,
5623 },
5624 {
5625 .cmd = NL80211_CMD_DEAUTHENTICATE,
5626 .doit = nl80211_deauthenticate,
5627 .policy = nl80211_policy,
5628 .flags = GENL_ADMIN_PERM,
5629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5630 NL80211_FLAG_NEED_RTNL,
5631 },
5632 {
5633 .cmd = NL80211_CMD_DISASSOCIATE,
5634 .doit = nl80211_disassociate,
5635 .policy = nl80211_policy,
5636 .flags = GENL_ADMIN_PERM,
5637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5638 NL80211_FLAG_NEED_RTNL,
5639 },
5640 {
5641 .cmd = NL80211_CMD_JOIN_IBSS,
5642 .doit = nl80211_join_ibss,
5643 .policy = nl80211_policy,
5644 .flags = GENL_ADMIN_PERM,
5645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5646 NL80211_FLAG_NEED_RTNL,
5647 },
5648 {
5649 .cmd = NL80211_CMD_LEAVE_IBSS,
5650 .doit = nl80211_leave_ibss,
5651 .policy = nl80211_policy,
5652 .flags = GENL_ADMIN_PERM,
5653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5654 NL80211_FLAG_NEED_RTNL,
5655 },
5656 #ifdef CONFIG_NL80211_TESTMODE
5657 {
5658 .cmd = NL80211_CMD_TESTMODE,
5659 .doit = nl80211_testmode_do,
5660 .policy = nl80211_policy,
5661 .flags = GENL_ADMIN_PERM,
5662 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5663 NL80211_FLAG_NEED_RTNL,
5664 },
5665 #endif
5666 {
5667 .cmd = NL80211_CMD_CONNECT,
5668 .doit = nl80211_connect,
5669 .policy = nl80211_policy,
5670 .flags = GENL_ADMIN_PERM,
5671 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5672 NL80211_FLAG_NEED_RTNL,
5673 },
5674 {
5675 .cmd = NL80211_CMD_DISCONNECT,
5676 .doit = nl80211_disconnect,
5677 .policy = nl80211_policy,
5678 .flags = GENL_ADMIN_PERM,
5679 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5680 NL80211_FLAG_NEED_RTNL,
5681 },
5682 {
5683 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5684 .doit = nl80211_wiphy_netns,
5685 .policy = nl80211_policy,
5686 .flags = GENL_ADMIN_PERM,
5687 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5688 NL80211_FLAG_NEED_RTNL,
5689 },
5690 {
5691 .cmd = NL80211_CMD_GET_SURVEY,
5692 .policy = nl80211_policy,
5693 .dumpit = nl80211_dump_survey,
5694 },
5695 {
5696 .cmd = NL80211_CMD_SET_PMKSA,
5697 .doit = nl80211_setdel_pmksa,
5698 .policy = nl80211_policy,
5699 .flags = GENL_ADMIN_PERM,
5700 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5701 NL80211_FLAG_NEED_RTNL,
5702 },
5703 {
5704 .cmd = NL80211_CMD_DEL_PMKSA,
5705 .doit = nl80211_setdel_pmksa,
5706 .policy = nl80211_policy,
5707 .flags = GENL_ADMIN_PERM,
5708 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5709 NL80211_FLAG_NEED_RTNL,
5710 },
5711 {
5712 .cmd = NL80211_CMD_FLUSH_PMKSA,
5713 .doit = nl80211_flush_pmksa,
5714 .policy = nl80211_policy,
5715 .flags = GENL_ADMIN_PERM,
5716 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5717 NL80211_FLAG_NEED_RTNL,
5718 },
5719 {
5720 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5721 .doit = nl80211_remain_on_channel,
5722 .policy = nl80211_policy,
5723 .flags = GENL_ADMIN_PERM,
5724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5725 NL80211_FLAG_NEED_RTNL,
5726 },
5727 {
5728 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5729 .doit = nl80211_cancel_remain_on_channel,
5730 .policy = nl80211_policy,
5731 .flags = GENL_ADMIN_PERM,
5732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5733 NL80211_FLAG_NEED_RTNL,
5734 },
5735 {
5736 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5737 .doit = nl80211_set_tx_bitrate_mask,
5738 .policy = nl80211_policy,
5739 .flags = GENL_ADMIN_PERM,
5740 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5741 NL80211_FLAG_NEED_RTNL,
5742 },
5743 {
5744 .cmd = NL80211_CMD_REGISTER_FRAME,
5745 .doit = nl80211_register_mgmt,
5746 .policy = nl80211_policy,
5747 .flags = GENL_ADMIN_PERM,
5748 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5749 NL80211_FLAG_NEED_RTNL,
5750 },
5751 {
5752 .cmd = NL80211_CMD_FRAME,
5753 .doit = nl80211_tx_mgmt,
5754 .policy = nl80211_policy,
5755 .flags = GENL_ADMIN_PERM,
5756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5757 NL80211_FLAG_NEED_RTNL,
5758 },
5759 {
5760 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5761 .doit = nl80211_tx_mgmt_cancel_wait,
5762 .policy = nl80211_policy,
5763 .flags = GENL_ADMIN_PERM,
5764 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5765 NL80211_FLAG_NEED_RTNL,
5766 },
5767 {
5768 .cmd = NL80211_CMD_SET_POWER_SAVE,
5769 .doit = nl80211_set_power_save,
5770 .policy = nl80211_policy,
5771 .flags = GENL_ADMIN_PERM,
5772 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5773 NL80211_FLAG_NEED_RTNL,
5774 },
5775 {
5776 .cmd = NL80211_CMD_GET_POWER_SAVE,
5777 .doit = nl80211_get_power_save,
5778 .policy = nl80211_policy,
5779 /* can be retrieved by unprivileged users */
5780 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5781 NL80211_FLAG_NEED_RTNL,
5782 },
5783 {
5784 .cmd = NL80211_CMD_SET_CQM,
5785 .doit = nl80211_set_cqm,
5786 .policy = nl80211_policy,
5787 .flags = GENL_ADMIN_PERM,
5788 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5789 NL80211_FLAG_NEED_RTNL,
5790 },
5791 {
5792 .cmd = NL80211_CMD_SET_CHANNEL,
5793 .doit = nl80211_set_channel,
5794 .policy = nl80211_policy,
5795 .flags = GENL_ADMIN_PERM,
5796 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5797 NL80211_FLAG_NEED_RTNL,
5798 },
5799 {
5800 .cmd = NL80211_CMD_SET_WDS_PEER,
5801 .doit = nl80211_set_wds_peer,
5802 .policy = nl80211_policy,
5803 .flags = GENL_ADMIN_PERM,
5804 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5805 NL80211_FLAG_NEED_RTNL,
5806 },
5807 {
5808 .cmd = NL80211_CMD_JOIN_MESH,
5809 .doit = nl80211_join_mesh,
5810 .policy = nl80211_policy,
5811 .flags = GENL_ADMIN_PERM,
5812 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5813 NL80211_FLAG_NEED_RTNL,
5814 },
5815 {
5816 .cmd = NL80211_CMD_LEAVE_MESH,
5817 .doit = nl80211_leave_mesh,
5818 .policy = nl80211_policy,
5819 .flags = GENL_ADMIN_PERM,
5820 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5821 NL80211_FLAG_NEED_RTNL,
5822 },
5823 {
5824 .cmd = NL80211_CMD_GET_WOWLAN,
5825 .doit = nl80211_get_wowlan,
5826 .policy = nl80211_policy,
5827 /* can be retrieved by unprivileged users */
5828 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5829 NL80211_FLAG_NEED_RTNL,
5830 },
5831 {
5832 .cmd = NL80211_CMD_SET_WOWLAN,
5833 .doit = nl80211_set_wowlan,
5834 .policy = nl80211_policy,
5835 .flags = GENL_ADMIN_PERM,
5836 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5837 NL80211_FLAG_NEED_RTNL,
5838 },
5839 };
5840
5841 static struct genl_multicast_group nl80211_mlme_mcgrp = {
5842 .name = "mlme",
5843 };
5844
5845 /* multicast groups */
5846 static struct genl_multicast_group nl80211_config_mcgrp = {
5847 .name = "config",
5848 };
5849 static struct genl_multicast_group nl80211_scan_mcgrp = {
5850 .name = "scan",
5851 };
5852 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5853 .name = "regulatory",
5854 };
5855
5856 /* notification functions */
5857
5858 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5859 {
5860 struct sk_buff *msg;
5861
5862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5863 if (!msg)
5864 return;
5865
5866 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5867 nlmsg_free(msg);
5868 return;
5869 }
5870
5871 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5872 nl80211_config_mcgrp.id, GFP_KERNEL);
5873 }
5874
5875 static int nl80211_add_scan_req(struct sk_buff *msg,
5876 struct cfg80211_registered_device *rdev)
5877 {
5878 struct cfg80211_scan_request *req = rdev->scan_req;
5879 struct nlattr *nest;
5880 int i;
5881
5882 ASSERT_RDEV_LOCK(rdev);
5883
5884 if (WARN_ON(!req))
5885 return 0;
5886
5887 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5888 if (!nest)
5889 goto nla_put_failure;
5890 for (i = 0; i < req->n_ssids; i++)
5891 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5892 nla_nest_end(msg, nest);
5893
5894 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5895 if (!nest)
5896 goto nla_put_failure;
5897 for (i = 0; i < req->n_channels; i++)
5898 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5899 nla_nest_end(msg, nest);
5900
5901 if (req->ie)
5902 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5903
5904 return 0;
5905 nla_put_failure:
5906 return -ENOBUFS;
5907 }
5908
5909 static int nl80211_send_scan_msg(struct sk_buff *msg,
5910 struct cfg80211_registered_device *rdev,
5911 struct net_device *netdev,
5912 u32 pid, u32 seq, int flags,
5913 u32 cmd)
5914 {
5915 void *hdr;
5916
5917 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5918 if (!hdr)
5919 return -1;
5920
5921 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5922 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5923
5924 /* ignore errors and send incomplete event anyway */
5925 nl80211_add_scan_req(msg, rdev);
5926
5927 return genlmsg_end(msg, hdr);
5928
5929 nla_put_failure:
5930 genlmsg_cancel(msg, hdr);
5931 return -EMSGSIZE;
5932 }
5933
5934 static int
5935 nl80211_send_sched_scan_msg(struct sk_buff *msg,
5936 struct cfg80211_registered_device *rdev,
5937 struct net_device *netdev,
5938 u32 pid, u32 seq, int flags, u32 cmd)
5939 {
5940 void *hdr;
5941
5942 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5943 if (!hdr)
5944 return -1;
5945
5946 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5947 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5948
5949 return genlmsg_end(msg, hdr);
5950
5951 nla_put_failure:
5952 genlmsg_cancel(msg, hdr);
5953 return -EMSGSIZE;
5954 }
5955
5956 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5957 struct net_device *netdev)
5958 {
5959 struct sk_buff *msg;
5960
5961 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5962 if (!msg)
5963 return;
5964
5965 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5966 NL80211_CMD_TRIGGER_SCAN) < 0) {
5967 nlmsg_free(msg);
5968 return;
5969 }
5970
5971 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5972 nl80211_scan_mcgrp.id, GFP_KERNEL);
5973 }
5974
5975 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5976 struct net_device *netdev)
5977 {
5978 struct sk_buff *msg;
5979
5980 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5981 if (!msg)
5982 return;
5983
5984 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5985 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
5986 nlmsg_free(msg);
5987 return;
5988 }
5989
5990 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5991 nl80211_scan_mcgrp.id, GFP_KERNEL);
5992 }
5993
5994 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5995 struct net_device *netdev)
5996 {
5997 struct sk_buff *msg;
5998
5999 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6000 if (!msg)
6001 return;
6002
6003 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6004 NL80211_CMD_SCAN_ABORTED) < 0) {
6005 nlmsg_free(msg);
6006 return;
6007 }
6008
6009 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6010 nl80211_scan_mcgrp.id, GFP_KERNEL);
6011 }
6012
6013 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6014 struct net_device *netdev)
6015 {
6016 struct sk_buff *msg;
6017
6018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6019 if (!msg)
6020 return;
6021
6022 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6023 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6024 nlmsg_free(msg);
6025 return;
6026 }
6027
6028 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6029 nl80211_scan_mcgrp.id, GFP_KERNEL);
6030 }
6031
6032 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6033 struct net_device *netdev, u32 cmd)
6034 {
6035 struct sk_buff *msg;
6036
6037 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6038 if (!msg)
6039 return;
6040
6041 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6042 nlmsg_free(msg);
6043 return;
6044 }
6045
6046 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6047 nl80211_scan_mcgrp.id, GFP_KERNEL);
6048 }
6049
6050 /*
6051 * This can happen on global regulatory changes or device specific settings
6052 * based on custom world regulatory domains.
6053 */
6054 void nl80211_send_reg_change_event(struct regulatory_request *request)
6055 {
6056 struct sk_buff *msg;
6057 void *hdr;
6058
6059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6060 if (!msg)
6061 return;
6062
6063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6064 if (!hdr) {
6065 nlmsg_free(msg);
6066 return;
6067 }
6068
6069 /* Userspace can always count this one always being set */
6070 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6071
6072 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6073 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6074 NL80211_REGDOM_TYPE_WORLD);
6075 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6076 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6077 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6078 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6079 request->intersect)
6080 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6081 NL80211_REGDOM_TYPE_INTERSECTION);
6082 else {
6083 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6084 NL80211_REGDOM_TYPE_COUNTRY);
6085 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6086 }
6087
6088 if (wiphy_idx_valid(request->wiphy_idx))
6089 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6090
6091 if (genlmsg_end(msg, hdr) < 0) {
6092 nlmsg_free(msg);
6093 return;
6094 }
6095
6096 rcu_read_lock();
6097 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6098 GFP_ATOMIC);
6099 rcu_read_unlock();
6100
6101 return;
6102
6103 nla_put_failure:
6104 genlmsg_cancel(msg, hdr);
6105 nlmsg_free(msg);
6106 }
6107
6108 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6109 struct net_device *netdev,
6110 const u8 *buf, size_t len,
6111 enum nl80211_commands cmd, gfp_t gfp)
6112 {
6113 struct sk_buff *msg;
6114 void *hdr;
6115
6116 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6117 if (!msg)
6118 return;
6119
6120 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6121 if (!hdr) {
6122 nlmsg_free(msg);
6123 return;
6124 }
6125
6126 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6127 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6128 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6129
6130 if (genlmsg_end(msg, hdr) < 0) {
6131 nlmsg_free(msg);
6132 return;
6133 }
6134
6135 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6136 nl80211_mlme_mcgrp.id, gfp);
6137 return;
6138
6139 nla_put_failure:
6140 genlmsg_cancel(msg, hdr);
6141 nlmsg_free(msg);
6142 }
6143
6144 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6145 struct net_device *netdev, const u8 *buf,
6146 size_t len, gfp_t gfp)
6147 {
6148 nl80211_send_mlme_event(rdev, netdev, buf, len,
6149 NL80211_CMD_AUTHENTICATE, gfp);
6150 }
6151
6152 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6153 struct net_device *netdev, const u8 *buf,
6154 size_t len, gfp_t gfp)
6155 {
6156 nl80211_send_mlme_event(rdev, netdev, buf, len,
6157 NL80211_CMD_ASSOCIATE, gfp);
6158 }
6159
6160 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6161 struct net_device *netdev, const u8 *buf,
6162 size_t len, gfp_t gfp)
6163 {
6164 nl80211_send_mlme_event(rdev, netdev, buf, len,
6165 NL80211_CMD_DEAUTHENTICATE, gfp);
6166 }
6167
6168 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6169 struct net_device *netdev, const u8 *buf,
6170 size_t len, gfp_t gfp)
6171 {
6172 nl80211_send_mlme_event(rdev, netdev, buf, len,
6173 NL80211_CMD_DISASSOCIATE, gfp);
6174 }
6175
6176 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6177 struct net_device *netdev, const u8 *buf,
6178 size_t len, gfp_t gfp)
6179 {
6180 nl80211_send_mlme_event(rdev, netdev, buf, len,
6181 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6182 }
6183
6184 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6185 struct net_device *netdev, const u8 *buf,
6186 size_t len, gfp_t gfp)
6187 {
6188 nl80211_send_mlme_event(rdev, netdev, buf, len,
6189 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6190 }
6191
6192 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6193 struct net_device *netdev, int cmd,
6194 const u8 *addr, gfp_t gfp)
6195 {
6196 struct sk_buff *msg;
6197 void *hdr;
6198
6199 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6200 if (!msg)
6201 return;
6202
6203 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6204 if (!hdr) {
6205 nlmsg_free(msg);
6206 return;
6207 }
6208
6209 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6210 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6211 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6212 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6213
6214 if (genlmsg_end(msg, hdr) < 0) {
6215 nlmsg_free(msg);
6216 return;
6217 }
6218
6219 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6220 nl80211_mlme_mcgrp.id, gfp);
6221 return;
6222
6223 nla_put_failure:
6224 genlmsg_cancel(msg, hdr);
6225 nlmsg_free(msg);
6226 }
6227
6228 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6229 struct net_device *netdev, const u8 *addr,
6230 gfp_t gfp)
6231 {
6232 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6233 addr, gfp);
6234 }
6235
6236 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6237 struct net_device *netdev, const u8 *addr,
6238 gfp_t gfp)
6239 {
6240 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6241 addr, gfp);
6242 }
6243
6244 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6245 struct net_device *netdev, const u8 *bssid,
6246 const u8 *req_ie, size_t req_ie_len,
6247 const u8 *resp_ie, size_t resp_ie_len,
6248 u16 status, gfp_t gfp)
6249 {
6250 struct sk_buff *msg;
6251 void *hdr;
6252
6253 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6254 if (!msg)
6255 return;
6256
6257 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6258 if (!hdr) {
6259 nlmsg_free(msg);
6260 return;
6261 }
6262
6263 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6264 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6265 if (bssid)
6266 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6267 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6268 if (req_ie)
6269 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6270 if (resp_ie)
6271 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6272
6273 if (genlmsg_end(msg, hdr) < 0) {
6274 nlmsg_free(msg);
6275 return;
6276 }
6277
6278 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6279 nl80211_mlme_mcgrp.id, gfp);
6280 return;
6281
6282 nla_put_failure:
6283 genlmsg_cancel(msg, hdr);
6284 nlmsg_free(msg);
6285
6286 }
6287
6288 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6289 struct net_device *netdev, const u8 *bssid,
6290 const u8 *req_ie, size_t req_ie_len,
6291 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6292 {
6293 struct sk_buff *msg;
6294 void *hdr;
6295
6296 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6297 if (!msg)
6298 return;
6299
6300 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6301 if (!hdr) {
6302 nlmsg_free(msg);
6303 return;
6304 }
6305
6306 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6307 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6308 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6309 if (req_ie)
6310 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6311 if (resp_ie)
6312 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6313
6314 if (genlmsg_end(msg, hdr) < 0) {
6315 nlmsg_free(msg);
6316 return;
6317 }
6318
6319 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6320 nl80211_mlme_mcgrp.id, gfp);
6321 return;
6322
6323 nla_put_failure:
6324 genlmsg_cancel(msg, hdr);
6325 nlmsg_free(msg);
6326
6327 }
6328
6329 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6330 struct net_device *netdev, u16 reason,
6331 const u8 *ie, size_t ie_len, bool from_ap)
6332 {
6333 struct sk_buff *msg;
6334 void *hdr;
6335
6336 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6337 if (!msg)
6338 return;
6339
6340 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6341 if (!hdr) {
6342 nlmsg_free(msg);
6343 return;
6344 }
6345
6346 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6347 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6348 if (from_ap && reason)
6349 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6350 if (from_ap)
6351 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6352 if (ie)
6353 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6354
6355 if (genlmsg_end(msg, hdr) < 0) {
6356 nlmsg_free(msg);
6357 return;
6358 }
6359
6360 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6361 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6362 return;
6363
6364 nla_put_failure:
6365 genlmsg_cancel(msg, hdr);
6366 nlmsg_free(msg);
6367
6368 }
6369
6370 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6371 struct net_device *netdev, const u8 *bssid,
6372 gfp_t gfp)
6373 {
6374 struct sk_buff *msg;
6375 void *hdr;
6376
6377 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6378 if (!msg)
6379 return;
6380
6381 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6382 if (!hdr) {
6383 nlmsg_free(msg);
6384 return;
6385 }
6386
6387 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6389 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6390
6391 if (genlmsg_end(msg, hdr) < 0) {
6392 nlmsg_free(msg);
6393 return;
6394 }
6395
6396 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6397 nl80211_mlme_mcgrp.id, gfp);
6398 return;
6399
6400 nla_put_failure:
6401 genlmsg_cancel(msg, hdr);
6402 nlmsg_free(msg);
6403 }
6404
6405 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6406 struct net_device *netdev,
6407 const u8 *macaddr, const u8* ie, u8 ie_len,
6408 gfp_t gfp)
6409 {
6410 struct sk_buff *msg;
6411 void *hdr;
6412
6413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6414 if (!msg)
6415 return;
6416
6417 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6418 if (!hdr) {
6419 nlmsg_free(msg);
6420 return;
6421 }
6422
6423 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6424 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6425 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6426 if (ie_len && ie)
6427 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6428
6429 if (genlmsg_end(msg, hdr) < 0) {
6430 nlmsg_free(msg);
6431 return;
6432 }
6433
6434 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6435 nl80211_mlme_mcgrp.id, gfp);
6436 return;
6437
6438 nla_put_failure:
6439 genlmsg_cancel(msg, hdr);
6440 nlmsg_free(msg);
6441 }
6442
6443 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6444 struct net_device *netdev, const u8 *addr,
6445 enum nl80211_key_type key_type, int key_id,
6446 const u8 *tsc, gfp_t gfp)
6447 {
6448 struct sk_buff *msg;
6449 void *hdr;
6450
6451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6452 if (!msg)
6453 return;
6454
6455 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6456 if (!hdr) {
6457 nlmsg_free(msg);
6458 return;
6459 }
6460
6461 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6462 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6463 if (addr)
6464 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6465 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6466 if (key_id != -1)
6467 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6468 if (tsc)
6469 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6470
6471 if (genlmsg_end(msg, hdr) < 0) {
6472 nlmsg_free(msg);
6473 return;
6474 }
6475
6476 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6477 nl80211_mlme_mcgrp.id, gfp);
6478 return;
6479
6480 nla_put_failure:
6481 genlmsg_cancel(msg, hdr);
6482 nlmsg_free(msg);
6483 }
6484
6485 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6486 struct ieee80211_channel *channel_before,
6487 struct ieee80211_channel *channel_after)
6488 {
6489 struct sk_buff *msg;
6490 void *hdr;
6491 struct nlattr *nl_freq;
6492
6493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6494 if (!msg)
6495 return;
6496
6497 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6498 if (!hdr) {
6499 nlmsg_free(msg);
6500 return;
6501 }
6502
6503 /*
6504 * Since we are applying the beacon hint to a wiphy we know its
6505 * wiphy_idx is valid
6506 */
6507 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6508
6509 /* Before */
6510 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6511 if (!nl_freq)
6512 goto nla_put_failure;
6513 if (nl80211_msg_put_channel(msg, channel_before))
6514 goto nla_put_failure;
6515 nla_nest_end(msg, nl_freq);
6516
6517 /* After */
6518 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6519 if (!nl_freq)
6520 goto nla_put_failure;
6521 if (nl80211_msg_put_channel(msg, channel_after))
6522 goto nla_put_failure;
6523 nla_nest_end(msg, nl_freq);
6524
6525 if (genlmsg_end(msg, hdr) < 0) {
6526 nlmsg_free(msg);
6527 return;
6528 }
6529
6530 rcu_read_lock();
6531 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6532 GFP_ATOMIC);
6533 rcu_read_unlock();
6534
6535 return;
6536
6537 nla_put_failure:
6538 genlmsg_cancel(msg, hdr);
6539 nlmsg_free(msg);
6540 }
6541
6542 static void nl80211_send_remain_on_chan_event(
6543 int cmd, struct cfg80211_registered_device *rdev,
6544 struct net_device *netdev, u64 cookie,
6545 struct ieee80211_channel *chan,
6546 enum nl80211_channel_type channel_type,
6547 unsigned int duration, gfp_t gfp)
6548 {
6549 struct sk_buff *msg;
6550 void *hdr;
6551
6552 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6553 if (!msg)
6554 return;
6555
6556 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6557 if (!hdr) {
6558 nlmsg_free(msg);
6559 return;
6560 }
6561
6562 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6563 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6564 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6565 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6566 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6567
6568 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6569 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6570
6571 if (genlmsg_end(msg, hdr) < 0) {
6572 nlmsg_free(msg);
6573 return;
6574 }
6575
6576 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6577 nl80211_mlme_mcgrp.id, gfp);
6578 return;
6579
6580 nla_put_failure:
6581 genlmsg_cancel(msg, hdr);
6582 nlmsg_free(msg);
6583 }
6584
6585 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6586 struct net_device *netdev, u64 cookie,
6587 struct ieee80211_channel *chan,
6588 enum nl80211_channel_type channel_type,
6589 unsigned int duration, gfp_t gfp)
6590 {
6591 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6592 rdev, netdev, cookie, chan,
6593 channel_type, duration, gfp);
6594 }
6595
6596 void nl80211_send_remain_on_channel_cancel(
6597 struct cfg80211_registered_device *rdev, struct net_device *netdev,
6598 u64 cookie, struct ieee80211_channel *chan,
6599 enum nl80211_channel_type channel_type, gfp_t gfp)
6600 {
6601 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6602 rdev, netdev, cookie, chan,
6603 channel_type, 0, gfp);
6604 }
6605
6606 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6607 struct net_device *dev, const u8 *mac_addr,
6608 struct station_info *sinfo, gfp_t gfp)
6609 {
6610 struct sk_buff *msg;
6611
6612 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6613 if (!msg)
6614 return;
6615
6616 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6617 nlmsg_free(msg);
6618 return;
6619 }
6620
6621 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6622 nl80211_mlme_mcgrp.id, gfp);
6623 }
6624
6625 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
6626 struct net_device *dev, const u8 *mac_addr,
6627 gfp_t gfp)
6628 {
6629 struct sk_buff *msg;
6630 void *hdr;
6631
6632 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6633 if (!msg)
6634 return;
6635
6636 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
6637 if (!hdr) {
6638 nlmsg_free(msg);
6639 return;
6640 }
6641
6642 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
6643 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
6644
6645 if (genlmsg_end(msg, hdr) < 0) {
6646 nlmsg_free(msg);
6647 return;
6648 }
6649
6650 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6651 nl80211_mlme_mcgrp.id, gfp);
6652 return;
6653
6654 nla_put_failure:
6655 genlmsg_cancel(msg, hdr);
6656 nlmsg_free(msg);
6657 }
6658
6659 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
6660 struct net_device *netdev, u32 nlpid,
6661 int freq, const u8 *buf, size_t len, gfp_t gfp)
6662 {
6663 struct sk_buff *msg;
6664 void *hdr;
6665 int err;
6666
6667 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6668 if (!msg)
6669 return -ENOMEM;
6670
6671 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
6672 if (!hdr) {
6673 nlmsg_free(msg);
6674 return -ENOMEM;
6675 }
6676
6677 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6678 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6679 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
6680 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6681
6682 err = genlmsg_end(msg, hdr);
6683 if (err < 0) {
6684 nlmsg_free(msg);
6685 return err;
6686 }
6687
6688 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
6689 if (err < 0)
6690 return err;
6691 return 0;
6692
6693 nla_put_failure:
6694 genlmsg_cancel(msg, hdr);
6695 nlmsg_free(msg);
6696 return -ENOBUFS;
6697 }
6698
6699 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
6700 struct net_device *netdev, u64 cookie,
6701 const u8 *buf, size_t len, bool ack,
6702 gfp_t gfp)
6703 {
6704 struct sk_buff *msg;
6705 void *hdr;
6706
6707 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6708 if (!msg)
6709 return;
6710
6711 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
6712 if (!hdr) {
6713 nlmsg_free(msg);
6714 return;
6715 }
6716
6717 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6718 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6719 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6720 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6721 if (ack)
6722 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
6723
6724 if (genlmsg_end(msg, hdr) < 0) {
6725 nlmsg_free(msg);
6726 return;
6727 }
6728
6729 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
6730 return;
6731
6732 nla_put_failure:
6733 genlmsg_cancel(msg, hdr);
6734 nlmsg_free(msg);
6735 }
6736
6737 void
6738 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
6739 struct net_device *netdev,
6740 enum nl80211_cqm_rssi_threshold_event rssi_event,
6741 gfp_t gfp)
6742 {
6743 struct sk_buff *msg;
6744 struct nlattr *pinfoattr;
6745 void *hdr;
6746
6747 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6748 if (!msg)
6749 return;
6750
6751 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6752 if (!hdr) {
6753 nlmsg_free(msg);
6754 return;
6755 }
6756
6757 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6758 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6759
6760 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6761 if (!pinfoattr)
6762 goto nla_put_failure;
6763
6764 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
6765 rssi_event);
6766
6767 nla_nest_end(msg, pinfoattr);
6768
6769 if (genlmsg_end(msg, hdr) < 0) {
6770 nlmsg_free(msg);
6771 return;
6772 }
6773
6774 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6775 nl80211_mlme_mcgrp.id, gfp);
6776 return;
6777
6778 nla_put_failure:
6779 genlmsg_cancel(msg, hdr);
6780 nlmsg_free(msg);
6781 }
6782
6783 void
6784 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
6785 struct net_device *netdev, const u8 *peer,
6786 u32 num_packets, gfp_t gfp)
6787 {
6788 struct sk_buff *msg;
6789 struct nlattr *pinfoattr;
6790 void *hdr;
6791
6792 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6793 if (!msg)
6794 return;
6795
6796 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6797 if (!hdr) {
6798 nlmsg_free(msg);
6799 return;
6800 }
6801
6802 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6803 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6804 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6805
6806 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6807 if (!pinfoattr)
6808 goto nla_put_failure;
6809
6810 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6811
6812 nla_nest_end(msg, pinfoattr);
6813
6814 if (genlmsg_end(msg, hdr) < 0) {
6815 nlmsg_free(msg);
6816 return;
6817 }
6818
6819 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6820 nl80211_mlme_mcgrp.id, gfp);
6821 return;
6822
6823 nla_put_failure:
6824 genlmsg_cancel(msg, hdr);
6825 nlmsg_free(msg);
6826 }
6827
6828 static int nl80211_netlink_notify(struct notifier_block * nb,
6829 unsigned long state,
6830 void *_notify)
6831 {
6832 struct netlink_notify *notify = _notify;
6833 struct cfg80211_registered_device *rdev;
6834 struct wireless_dev *wdev;
6835
6836 if (state != NETLINK_URELEASE)
6837 return NOTIFY_DONE;
6838
6839 rcu_read_lock();
6840
6841 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6842 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
6843 cfg80211_mlme_unregister_socket(wdev, notify->pid);
6844
6845 rcu_read_unlock();
6846
6847 return NOTIFY_DONE;
6848 }
6849
6850 static struct notifier_block nl80211_netlink_notifier = {
6851 .notifier_call = nl80211_netlink_notify,
6852 };
6853
6854 /* initialisation/exit functions */
6855
6856 int nl80211_init(void)
6857 {
6858 int err;
6859
6860 err = genl_register_family_with_ops(&nl80211_fam,
6861 nl80211_ops, ARRAY_SIZE(nl80211_ops));
6862 if (err)
6863 return err;
6864
6865 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6866 if (err)
6867 goto err_out;
6868
6869 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6870 if (err)
6871 goto err_out;
6872
6873 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6874 if (err)
6875 goto err_out;
6876
6877 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6878 if (err)
6879 goto err_out;
6880
6881 #ifdef CONFIG_NL80211_TESTMODE
6882 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6883 if (err)
6884 goto err_out;
6885 #endif
6886
6887 err = netlink_register_notifier(&nl80211_netlink_notifier);
6888 if (err)
6889 goto err_out;
6890
6891 return 0;
6892 err_out:
6893 genl_unregister_family(&nl80211_fam);
6894 return err;
6895 }
6896
6897 void nl80211_exit(void)
6898 {
6899 netlink_unregister_notifier(&nl80211_netlink_notifier);
6900 genl_unregister_family(&nl80211_fam);
6901 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree