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cfg80211/nl80211: Indicate roaming feature capability to userspace.
[linux-2.6/btrfs-unstable.git] / net / wireless / nl80211.c
blobad13903c9b89da6f7b2ed891527ec56c83f90b04
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 bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
136 .len = NL80211_HT_CAPABILITY_LEN },
137
138 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
139 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
140 .len = IEEE80211_MAX_DATA_LEN },
141 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
142 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
143
144 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
145 .len = IEEE80211_MAX_SSID_LEN },
146 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
147 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
148 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
149 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
150 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
151 [NL80211_ATTR_STA_FLAGS2] = {
152 .len = sizeof(struct nl80211_sta_flag_update),
153 },
154 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
156 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
157 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
158 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
159 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
160 [NL80211_ATTR_PID] = { .type = NLA_U32 },
161 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
162 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
163 .len = WLAN_PMKID_LEN },
164 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
165 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
166 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
167 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
168 .len = IEEE80211_MAX_DATA_LEN },
169 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
170 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
171 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
172 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
173 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
174 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
175 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
176 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
177 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
178 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
179 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
180 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
181 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
182 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
183 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
184 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
185 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
186 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
187 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
188 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
191 .len = IEEE80211_MAX_DATA_LEN },
192 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
193 };
194
195 /* policy for the key attributes */
196 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
197 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
198 [NL80211_KEY_IDX] = { .type = NLA_U8 },
199 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
200 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
201 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
202 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
203 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
204 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
205 };
206
207 /* policy for the key default flags */
208 static const struct nla_policy
209 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
210 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
211 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
212 };
213
214 /* policy for WoWLAN attributes */
215 static const struct nla_policy
216 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
217 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
218 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
219 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
220 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
221 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
222 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
223 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
224 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
225 };
226
227 /* policy for GTK rekey offload attributes */
228 static const struct nla_policy
229 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
230 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
231 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
232 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
233 };
234
235 /* ifidx get helper */
236 static int nl80211_get_ifidx(struct netlink_callback *cb)
237 {
238 int res;
239
240 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
241 nl80211_fam.attrbuf, nl80211_fam.maxattr,
242 nl80211_policy);
243 if (res)
244 return res;
245
246 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
247 return -EINVAL;
248
249 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
250 if (!res)
251 return -EINVAL;
252 return res;
253 }
254
255 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
256 struct netlink_callback *cb,
257 struct cfg80211_registered_device **rdev,
258 struct net_device **dev)
259 {
260 int ifidx = cb->args[0];
261 int err;
262
263 if (!ifidx)
264 ifidx = nl80211_get_ifidx(cb);
265 if (ifidx < 0)
266 return ifidx;
267
268 cb->args[0] = ifidx;
269
270 rtnl_lock();
271
272 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
273 if (!*dev) {
274 err = -ENODEV;
275 goto out_rtnl;
276 }
277
278 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
279 if (IS_ERR(*rdev)) {
280 err = PTR_ERR(*rdev);
281 goto out_rtnl;
282 }
283
284 return 0;
285 out_rtnl:
286 rtnl_unlock();
287 return err;
288 }
289
290 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
291 {
292 cfg80211_unlock_rdev(rdev);
293 rtnl_unlock();
294 }
295
296 /* IE validation */
297 static bool is_valid_ie_attr(const struct nlattr *attr)
298 {
299 const u8 *pos;
300 int len;
301
302 if (!attr)
303 return true;
304
305 pos = nla_data(attr);
306 len = nla_len(attr);
307
308 while (len) {
309 u8 elemlen;
310
311 if (len < 2)
312 return false;
313 len -= 2;
314
315 elemlen = pos[1];
316 if (elemlen > len)
317 return false;
318
319 len -= elemlen;
320 pos += 2 + elemlen;
321 }
322
323 return true;
324 }
325
326 /* message building helper */
327 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
328 int flags, u8 cmd)
329 {
330 /* since there is no private header just add the generic one */
331 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
332 }
333
334 static int nl80211_msg_put_channel(struct sk_buff *msg,
335 struct ieee80211_channel *chan)
336 {
337 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
338 chan->center_freq);
339
340 if (chan->flags & IEEE80211_CHAN_DISABLED)
341 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
342 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
343 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
344 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
345 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
346 if (chan->flags & IEEE80211_CHAN_RADAR)
347 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
348
349 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
350 DBM_TO_MBM(chan->max_power));
351
352 return 0;
353
354 nla_put_failure:
355 return -ENOBUFS;
356 }
357
358 /* netlink command implementations */
359
360 struct key_parse {
361 struct key_params p;
362 int idx;
363 int type;
364 bool def, defmgmt;
365 bool def_uni, def_multi;
366 };
367
368 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
369 {
370 struct nlattr *tb[NL80211_KEY_MAX + 1];
371 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
372 nl80211_key_policy);
373 if (err)
374 return err;
375
376 k->def = !!tb[NL80211_KEY_DEFAULT];
377 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
378
379 if (k->def) {
380 k->def_uni = true;
381 k->def_multi = true;
382 }
383 if (k->defmgmt)
384 k->def_multi = true;
385
386 if (tb[NL80211_KEY_IDX])
387 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
388
389 if (tb[NL80211_KEY_DATA]) {
390 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
391 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
392 }
393
394 if (tb[NL80211_KEY_SEQ]) {
395 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
396 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
397 }
398
399 if (tb[NL80211_KEY_CIPHER])
400 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
401
402 if (tb[NL80211_KEY_TYPE]) {
403 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
404 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
405 return -EINVAL;
406 }
407
408 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
409 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
410 int err = nla_parse_nested(kdt,
411 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
412 tb[NL80211_KEY_DEFAULT_TYPES],
413 nl80211_key_default_policy);
414 if (err)
415 return err;
416
417 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
418 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
419 }
420
421 return 0;
422 }
423
424 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
425 {
426 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
427 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
428 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
429 }
430
431 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
432 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
433 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
434 }
435
436 if (info->attrs[NL80211_ATTR_KEY_IDX])
437 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
438
439 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
440 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
441
442 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
443 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
444
445 if (k->def) {
446 k->def_uni = true;
447 k->def_multi = true;
448 }
449 if (k->defmgmt)
450 k->def_multi = true;
451
452 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
453 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
454 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
455 return -EINVAL;
456 }
457
458 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
459 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
460 int err = nla_parse_nested(
461 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
462 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
463 nl80211_key_default_policy);
464 if (err)
465 return err;
466
467 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
468 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
469 }
470
471 return 0;
472 }
473
474 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
475 {
476 int err;
477
478 memset(k, 0, sizeof(*k));
479 k->idx = -1;
480 k->type = -1;
481
482 if (info->attrs[NL80211_ATTR_KEY])
483 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
484 else
485 err = nl80211_parse_key_old(info, k);
486
487 if (err)
488 return err;
489
490 if (k->def && k->defmgmt)
491 return -EINVAL;
492
493 if (k->defmgmt) {
494 if (k->def_uni || !k->def_multi)
495 return -EINVAL;
496 }
497
498 if (k->idx != -1) {
499 if (k->defmgmt) {
500 if (k->idx < 4 || k->idx > 5)
501 return -EINVAL;
502 } else if (k->def) {
503 if (k->idx < 0 || k->idx > 3)
504 return -EINVAL;
505 } else {
506 if (k->idx < 0 || k->idx > 5)
507 return -EINVAL;
508 }
509 }
510
511 return 0;
512 }
513
514 static struct cfg80211_cached_keys *
515 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
516 struct nlattr *keys)
517 {
518 struct key_parse parse;
519 struct nlattr *key;
520 struct cfg80211_cached_keys *result;
521 int rem, err, def = 0;
522
523 result = kzalloc(sizeof(*result), GFP_KERNEL);
524 if (!result)
525 return ERR_PTR(-ENOMEM);
526
527 result->def = -1;
528 result->defmgmt = -1;
529
530 nla_for_each_nested(key, keys, rem) {
531 memset(&parse, 0, sizeof(parse));
532 parse.idx = -1;
533
534 err = nl80211_parse_key_new(key, &parse);
535 if (err)
536 goto error;
537 err = -EINVAL;
538 if (!parse.p.key)
539 goto error;
540 if (parse.idx < 0 || parse.idx > 4)
541 goto error;
542 if (parse.def) {
543 if (def)
544 goto error;
545 def = 1;
546 result->def = parse.idx;
547 if (!parse.def_uni || !parse.def_multi)
548 goto error;
549 } else if (parse.defmgmt)
550 goto error;
551 err = cfg80211_validate_key_settings(rdev, &parse.p,
552 parse.idx, false, NULL);
553 if (err)
554 goto error;
555 result->params[parse.idx].cipher = parse.p.cipher;
556 result->params[parse.idx].key_len = parse.p.key_len;
557 result->params[parse.idx].key = result->data[parse.idx];
558 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
559 }
560
561 return result;
562 error:
563 kfree(result);
564 return ERR_PTR(err);
565 }
566
567 static int nl80211_key_allowed(struct wireless_dev *wdev)
568 {
569 ASSERT_WDEV_LOCK(wdev);
570
571 switch (wdev->iftype) {
572 case NL80211_IFTYPE_AP:
573 case NL80211_IFTYPE_AP_VLAN:
574 case NL80211_IFTYPE_P2P_GO:
575 case NL80211_IFTYPE_MESH_POINT:
576 break;
577 case NL80211_IFTYPE_ADHOC:
578 if (!wdev->current_bss)
579 return -ENOLINK;
580 break;
581 case NL80211_IFTYPE_STATION:
582 case NL80211_IFTYPE_P2P_CLIENT:
583 if (wdev->sme_state != CFG80211_SME_CONNECTED)
584 return -ENOLINK;
585 break;
586 default:
587 return -EINVAL;
588 }
589
590 return 0;
591 }
592
593 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
594 {
595 struct nlattr *nl_modes = nla_nest_start(msg, attr);
596 int i;
597
598 if (!nl_modes)
599 goto nla_put_failure;
600
601 i = 0;
602 while (ifmodes) {
603 if (ifmodes & 1)
604 NLA_PUT_FLAG(msg, i);
605 ifmodes >>= 1;
606 i++;
607 }
608
609 nla_nest_end(msg, nl_modes);
610 return 0;
611
612 nla_put_failure:
613 return -ENOBUFS;
614 }
615
616 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
617 struct sk_buff *msg)
618 {
619 struct nlattr *nl_combis;
620 int i, j;
621
622 nl_combis = nla_nest_start(msg,
623 NL80211_ATTR_INTERFACE_COMBINATIONS);
624 if (!nl_combis)
625 goto nla_put_failure;
626
627 for (i = 0; i < wiphy->n_iface_combinations; i++) {
628 const struct ieee80211_iface_combination *c;
629 struct nlattr *nl_combi, *nl_limits;
630
631 c = &wiphy->iface_combinations[i];
632
633 nl_combi = nla_nest_start(msg, i + 1);
634 if (!nl_combi)
635 goto nla_put_failure;
636
637 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
638 if (!nl_limits)
639 goto nla_put_failure;
640
641 for (j = 0; j < c->n_limits; j++) {
642 struct nlattr *nl_limit;
643
644 nl_limit = nla_nest_start(msg, j + 1);
645 if (!nl_limit)
646 goto nla_put_failure;
647 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
648 c->limits[j].max);
649 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
650 c->limits[j].types))
651 goto nla_put_failure;
652 nla_nest_end(msg, nl_limit);
653 }
654
655 nla_nest_end(msg, nl_limits);
656
657 if (c->beacon_int_infra_match)
658 NLA_PUT_FLAG(msg,
659 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
660 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
661 c->num_different_channels);
662 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
663 c->max_interfaces);
664
665 nla_nest_end(msg, nl_combi);
666 }
667
668 nla_nest_end(msg, nl_combis);
669
670 return 0;
671 nla_put_failure:
672 return -ENOBUFS;
673 }
674
675 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
676 struct cfg80211_registered_device *dev)
677 {
678 void *hdr;
679 struct nlattr *nl_bands, *nl_band;
680 struct nlattr *nl_freqs, *nl_freq;
681 struct nlattr *nl_rates, *nl_rate;
682 struct nlattr *nl_cmds;
683 enum ieee80211_band band;
684 struct ieee80211_channel *chan;
685 struct ieee80211_rate *rate;
686 int i;
687 const struct ieee80211_txrx_stypes *mgmt_stypes =
688 dev->wiphy.mgmt_stypes;
689
690 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
691 if (!hdr)
692 return -1;
693
694 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
695 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
696
697 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
698 cfg80211_rdev_list_generation);
699
700 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
701 dev->wiphy.retry_short);
702 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
703 dev->wiphy.retry_long);
704 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
705 dev->wiphy.frag_threshold);
706 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
707 dev->wiphy.rts_threshold);
708 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
709 dev->wiphy.coverage_class);
710 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
711 dev->wiphy.max_scan_ssids);
712 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
713 dev->wiphy.max_sched_scan_ssids);
714 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
715 dev->wiphy.max_scan_ie_len);
716 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
717 dev->wiphy.max_sched_scan_ie_len);
718
719 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
720 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
721 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
722 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
723
724 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
725 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
726
727 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
728 sizeof(u32) * dev->wiphy.n_cipher_suites,
729 dev->wiphy.cipher_suites);
730
731 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
732 dev->wiphy.max_num_pmkids);
733
734 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
735 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
736
737 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
738 dev->wiphy.available_antennas_tx);
739 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
740 dev->wiphy.available_antennas_rx);
741
742 if ((dev->wiphy.available_antennas_tx ||
743 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
744 u32 tx_ant = 0, rx_ant = 0;
745 int res;
746 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
747 if (!res) {
748 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
749 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
750 }
751 }
752
753 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
754 dev->wiphy.interface_modes))
755 goto nla_put_failure;
756
757 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
758 if (!nl_bands)
759 goto nla_put_failure;
760
761 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
762 if (!dev->wiphy.bands[band])
763 continue;
764
765 nl_band = nla_nest_start(msg, band);
766 if (!nl_band)
767 goto nla_put_failure;
768
769 /* add HT info */
770 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
771 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
772 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
773 &dev->wiphy.bands[band]->ht_cap.mcs);
774 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
775 dev->wiphy.bands[band]->ht_cap.cap);
776 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
777 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
778 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
779 dev->wiphy.bands[band]->ht_cap.ampdu_density);
780 }
781
782 /* add frequencies */
783 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
784 if (!nl_freqs)
785 goto nla_put_failure;
786
787 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
788 nl_freq = nla_nest_start(msg, i);
789 if (!nl_freq)
790 goto nla_put_failure;
791
792 chan = &dev->wiphy.bands[band]->channels[i];
793
794 if (nl80211_msg_put_channel(msg, chan))
795 goto nla_put_failure;
796
797 nla_nest_end(msg, nl_freq);
798 }
799
800 nla_nest_end(msg, nl_freqs);
801
802 /* add bitrates */
803 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
804 if (!nl_rates)
805 goto nla_put_failure;
806
807 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
808 nl_rate = nla_nest_start(msg, i);
809 if (!nl_rate)
810 goto nla_put_failure;
811
812 rate = &dev->wiphy.bands[band]->bitrates[i];
813 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
814 rate->bitrate);
815 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
816 NLA_PUT_FLAG(msg,
817 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
818
819 nla_nest_end(msg, nl_rate);
820 }
821
822 nla_nest_end(msg, nl_rates);
823
824 nla_nest_end(msg, nl_band);
825 }
826 nla_nest_end(msg, nl_bands);
827
828 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
829 if (!nl_cmds)
830 goto nla_put_failure;
831
832 i = 0;
833 #define CMD(op, n) \
834 do { \
835 if (dev->ops->op) { \
836 i++; \
837 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
838 } \
839 } while (0)
840
841 CMD(add_virtual_intf, NEW_INTERFACE);
842 CMD(change_virtual_intf, SET_INTERFACE);
843 CMD(add_key, NEW_KEY);
844 CMD(add_beacon, NEW_BEACON);
845 CMD(add_station, NEW_STATION);
846 CMD(add_mpath, NEW_MPATH);
847 CMD(update_mesh_config, SET_MESH_CONFIG);
848 CMD(change_bss, SET_BSS);
849 CMD(auth, AUTHENTICATE);
850 CMD(assoc, ASSOCIATE);
851 CMD(deauth, DEAUTHENTICATE);
852 CMD(disassoc, DISASSOCIATE);
853 CMD(join_ibss, JOIN_IBSS);
854 CMD(join_mesh, JOIN_MESH);
855 CMD(set_pmksa, SET_PMKSA);
856 CMD(del_pmksa, DEL_PMKSA);
857 CMD(flush_pmksa, FLUSH_PMKSA);
858 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
859 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
860 CMD(mgmt_tx, FRAME);
861 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
862 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
863 i++;
864 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
865 }
866 CMD(set_channel, SET_CHANNEL);
867 CMD(set_wds_peer, SET_WDS_PEER);
868 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
869 CMD(sched_scan_start, START_SCHED_SCAN);
870
871 #undef CMD
872
873 if (dev->ops->connect || dev->ops->auth) {
874 i++;
875 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
876 }
877
878 if (dev->ops->disconnect || dev->ops->deauth) {
879 i++;
880 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
881 }
882
883 nla_nest_end(msg, nl_cmds);
884
885 if (dev->ops->remain_on_channel)
886 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
887 dev->wiphy.max_remain_on_channel_duration);
888
889 if (dev->ops->mgmt_tx_cancel_wait)
890 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
891
892 if (mgmt_stypes) {
893 u16 stypes;
894 struct nlattr *nl_ftypes, *nl_ifs;
895 enum nl80211_iftype ift;
896
897 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
898 if (!nl_ifs)
899 goto nla_put_failure;
900
901 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
902 nl_ftypes = nla_nest_start(msg, ift);
903 if (!nl_ftypes)
904 goto nla_put_failure;
905 i = 0;
906 stypes = mgmt_stypes[ift].tx;
907 while (stypes) {
908 if (stypes & 1)
909 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
910 (i << 4) | IEEE80211_FTYPE_MGMT);
911 stypes >>= 1;
912 i++;
913 }
914 nla_nest_end(msg, nl_ftypes);
915 }
916
917 nla_nest_end(msg, nl_ifs);
918
919 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
920 if (!nl_ifs)
921 goto nla_put_failure;
922
923 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
924 nl_ftypes = nla_nest_start(msg, ift);
925 if (!nl_ftypes)
926 goto nla_put_failure;
927 i = 0;
928 stypes = mgmt_stypes[ift].rx;
929 while (stypes) {
930 if (stypes & 1)
931 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
932 (i << 4) | IEEE80211_FTYPE_MGMT);
933 stypes >>= 1;
934 i++;
935 }
936 nla_nest_end(msg, nl_ftypes);
937 }
938 nla_nest_end(msg, nl_ifs);
939 }
940
941 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
942 struct nlattr *nl_wowlan;
943
944 nl_wowlan = nla_nest_start(msg,
945 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
946 if (!nl_wowlan)
947 goto nla_put_failure;
948
949 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
950 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
951 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
952 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
953 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
954 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
955 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
956 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
957 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
958 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
959 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
960 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
961 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
962 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
963 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
964 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
965 if (dev->wiphy.wowlan.n_patterns) {
966 struct nl80211_wowlan_pattern_support pat = {
967 .max_patterns = dev->wiphy.wowlan.n_patterns,
968 .min_pattern_len =
969 dev->wiphy.wowlan.pattern_min_len,
970 .max_pattern_len =
971 dev->wiphy.wowlan.pattern_max_len,
972 };
973 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
974 sizeof(pat), &pat);
975 }
976
977 nla_nest_end(msg, nl_wowlan);
978 }
979
980 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
981 dev->wiphy.software_iftypes))
982 goto nla_put_failure;
983
984 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
985 goto nla_put_failure;
986
987 return genlmsg_end(msg, hdr);
988
989 nla_put_failure:
990 genlmsg_cancel(msg, hdr);
991 return -EMSGSIZE;
992 }
993
994 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
995 {
996 int idx = 0;
997 int start = cb->args[0];
998 struct cfg80211_registered_device *dev;
999
1000 mutex_lock(&cfg80211_mutex);
1001 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1002 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1003 continue;
1004 if (++idx <= start)
1005 continue;
1006 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1007 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1008 dev) < 0) {
1009 idx--;
1010 break;
1011 }
1012 }
1013 mutex_unlock(&cfg80211_mutex);
1014
1015 cb->args[0] = idx;
1016
1017 return skb->len;
1018 }
1019
1020 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1021 {
1022 struct sk_buff *msg;
1023 struct cfg80211_registered_device *dev = info->user_ptr[0];
1024
1025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1026 if (!msg)
1027 return -ENOMEM;
1028
1029 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1030 nlmsg_free(msg);
1031 return -ENOBUFS;
1032 }
1033
1034 return genlmsg_reply(msg, info);
1035 }
1036
1037 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1038 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1039 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1040 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1041 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1042 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1043 };
1044
1045 static int parse_txq_params(struct nlattr *tb[],
1046 struct ieee80211_txq_params *txq_params)
1047 {
1048 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1049 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1050 !tb[NL80211_TXQ_ATTR_AIFS])
1051 return -EINVAL;
1052
1053 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1054 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1055 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1056 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1057 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1058
1059 return 0;
1060 }
1061
1062 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1063 {
1064 /*
1065 * You can only set the channel explicitly for AP, mesh
1066 * and WDS type interfaces; all others have their channel
1067 * managed via their respective "establish a connection"
1068 * command (connect, join, ...)
1069 *
1070 * Monitors are special as they are normally slaved to
1071 * whatever else is going on, so they behave as though
1072 * you tried setting the wiphy channel itself.
1073 */
1074 return !wdev ||
1075 wdev->iftype == NL80211_IFTYPE_AP ||
1076 wdev->iftype == NL80211_IFTYPE_WDS ||
1077 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1078 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1079 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1080 }
1081
1082 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1083 struct wireless_dev *wdev,
1084 struct genl_info *info)
1085 {
1086 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1087 u32 freq;
1088 int result;
1089
1090 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1091 return -EINVAL;
1092
1093 if (!nl80211_can_set_dev_channel(wdev))
1094 return -EOPNOTSUPP;
1095
1096 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1097 channel_type = nla_get_u32(info->attrs[
1098 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1099 if (channel_type != NL80211_CHAN_NO_HT &&
1100 channel_type != NL80211_CHAN_HT20 &&
1101 channel_type != NL80211_CHAN_HT40PLUS &&
1102 channel_type != NL80211_CHAN_HT40MINUS)
1103 return -EINVAL;
1104 }
1105
1106 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1107
1108 mutex_lock(&rdev->devlist_mtx);
1109 if (wdev) {
1110 wdev_lock(wdev);
1111 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1112 wdev_unlock(wdev);
1113 } else {
1114 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1115 }
1116 mutex_unlock(&rdev->devlist_mtx);
1117
1118 return result;
1119 }
1120
1121 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1122 {
1123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1124 struct net_device *netdev = info->user_ptr[1];
1125
1126 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1127 }
1128
1129 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1130 {
1131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1132 struct net_device *dev = info->user_ptr[1];
1133 struct wireless_dev *wdev = dev->ieee80211_ptr;
1134 const u8 *bssid;
1135
1136 if (!info->attrs[NL80211_ATTR_MAC])
1137 return -EINVAL;
1138
1139 if (netif_running(dev))
1140 return -EBUSY;
1141
1142 if (!rdev->ops->set_wds_peer)
1143 return -EOPNOTSUPP;
1144
1145 if (wdev->iftype != NL80211_IFTYPE_WDS)
1146 return -EOPNOTSUPP;
1147
1148 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1149 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1150 }
1151
1152
1153 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1154 {
1155 struct cfg80211_registered_device *rdev;
1156 struct net_device *netdev = NULL;
1157 struct wireless_dev *wdev;
1158 int result = 0, rem_txq_params = 0;
1159 struct nlattr *nl_txq_params;
1160 u32 changed;
1161 u8 retry_short = 0, retry_long = 0;
1162 u32 frag_threshold = 0, rts_threshold = 0;
1163 u8 coverage_class = 0;
1164
1165 /*
1166 * Try to find the wiphy and netdev. Normally this
1167 * function shouldn't need the netdev, but this is
1168 * done for backward compatibility -- previously
1169 * setting the channel was done per wiphy, but now
1170 * it is per netdev. Previous userland like hostapd
1171 * also passed a netdev to set_wiphy, so that it is
1172 * possible to let that go to the right netdev!
1173 */
1174 mutex_lock(&cfg80211_mutex);
1175
1176 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1177 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1178
1179 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1180 if (netdev && netdev->ieee80211_ptr) {
1181 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1182 mutex_lock(&rdev->mtx);
1183 } else
1184 netdev = NULL;
1185 }
1186
1187 if (!netdev) {
1188 rdev = __cfg80211_rdev_from_info(info);
1189 if (IS_ERR(rdev)) {
1190 mutex_unlock(&cfg80211_mutex);
1191 return PTR_ERR(rdev);
1192 }
1193 wdev = NULL;
1194 netdev = NULL;
1195 result = 0;
1196
1197 mutex_lock(&rdev->mtx);
1198 } else if (netif_running(netdev) &&
1199 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1200 wdev = netdev->ieee80211_ptr;
1201 else
1202 wdev = NULL;
1203
1204 /*
1205 * end workaround code, by now the rdev is available
1206 * and locked, and wdev may or may not be NULL.
1207 */
1208
1209 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1210 result = cfg80211_dev_rename(
1211 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1212
1213 mutex_unlock(&cfg80211_mutex);
1214
1215 if (result)
1216 goto bad_res;
1217
1218 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1219 struct ieee80211_txq_params txq_params;
1220 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1221
1222 if (!rdev->ops->set_txq_params) {
1223 result = -EOPNOTSUPP;
1224 goto bad_res;
1225 }
1226
1227 nla_for_each_nested(nl_txq_params,
1228 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1229 rem_txq_params) {
1230 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1231 nla_data(nl_txq_params),
1232 nla_len(nl_txq_params),
1233 txq_params_policy);
1234 result = parse_txq_params(tb, &txq_params);
1235 if (result)
1236 goto bad_res;
1237
1238 result = rdev->ops->set_txq_params(&rdev->wiphy,
1239 &txq_params);
1240 if (result)
1241 goto bad_res;
1242 }
1243 }
1244
1245 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1246 result = __nl80211_set_channel(rdev, wdev, info);
1247 if (result)
1248 goto bad_res;
1249 }
1250
1251 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1252 enum nl80211_tx_power_setting type;
1253 int idx, mbm = 0;
1254
1255 if (!rdev->ops->set_tx_power) {
1256 result = -EOPNOTSUPP;
1257 goto bad_res;
1258 }
1259
1260 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1261 type = nla_get_u32(info->attrs[idx]);
1262
1263 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1264 (type != NL80211_TX_POWER_AUTOMATIC)) {
1265 result = -EINVAL;
1266 goto bad_res;
1267 }
1268
1269 if (type != NL80211_TX_POWER_AUTOMATIC) {
1270 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1271 mbm = nla_get_u32(info->attrs[idx]);
1272 }
1273
1274 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1275 if (result)
1276 goto bad_res;
1277 }
1278
1279 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1280 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1281 u32 tx_ant, rx_ant;
1282 if ((!rdev->wiphy.available_antennas_tx &&
1283 !rdev->wiphy.available_antennas_rx) ||
1284 !rdev->ops->set_antenna) {
1285 result = -EOPNOTSUPP;
1286 goto bad_res;
1287 }
1288
1289 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1290 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1291
1292 /* reject antenna configurations which don't match the
1293 * available antenna masks, except for the "all" mask */
1294 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1295 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1296 result = -EINVAL;
1297 goto bad_res;
1298 }
1299
1300 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1301 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1302
1303 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1304 if (result)
1305 goto bad_res;
1306 }
1307
1308 changed = 0;
1309
1310 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1311 retry_short = nla_get_u8(
1312 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1313 if (retry_short == 0) {
1314 result = -EINVAL;
1315 goto bad_res;
1316 }
1317 changed |= WIPHY_PARAM_RETRY_SHORT;
1318 }
1319
1320 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1321 retry_long = nla_get_u8(
1322 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1323 if (retry_long == 0) {
1324 result = -EINVAL;
1325 goto bad_res;
1326 }
1327 changed |= WIPHY_PARAM_RETRY_LONG;
1328 }
1329
1330 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1331 frag_threshold = nla_get_u32(
1332 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1333 if (frag_threshold < 256) {
1334 result = -EINVAL;
1335 goto bad_res;
1336 }
1337 if (frag_threshold != (u32) -1) {
1338 /*
1339 * Fragments (apart from the last one) are required to
1340 * have even length. Make the fragmentation code
1341 * simpler by stripping LSB should someone try to use
1342 * odd threshold value.
1343 */
1344 frag_threshold &= ~0x1;
1345 }
1346 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1347 }
1348
1349 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1350 rts_threshold = nla_get_u32(
1351 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1352 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1353 }
1354
1355 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1356 coverage_class = nla_get_u8(
1357 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1358 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1359 }
1360
1361 if (changed) {
1362 u8 old_retry_short, old_retry_long;
1363 u32 old_frag_threshold, old_rts_threshold;
1364 u8 old_coverage_class;
1365
1366 if (!rdev->ops->set_wiphy_params) {
1367 result = -EOPNOTSUPP;
1368 goto bad_res;
1369 }
1370
1371 old_retry_short = rdev->wiphy.retry_short;
1372 old_retry_long = rdev->wiphy.retry_long;
1373 old_frag_threshold = rdev->wiphy.frag_threshold;
1374 old_rts_threshold = rdev->wiphy.rts_threshold;
1375 old_coverage_class = rdev->wiphy.coverage_class;
1376
1377 if (changed & WIPHY_PARAM_RETRY_SHORT)
1378 rdev->wiphy.retry_short = retry_short;
1379 if (changed & WIPHY_PARAM_RETRY_LONG)
1380 rdev->wiphy.retry_long = retry_long;
1381 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1382 rdev->wiphy.frag_threshold = frag_threshold;
1383 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1384 rdev->wiphy.rts_threshold = rts_threshold;
1385 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1386 rdev->wiphy.coverage_class = coverage_class;
1387
1388 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1389 if (result) {
1390 rdev->wiphy.retry_short = old_retry_short;
1391 rdev->wiphy.retry_long = old_retry_long;
1392 rdev->wiphy.frag_threshold = old_frag_threshold;
1393 rdev->wiphy.rts_threshold = old_rts_threshold;
1394 rdev->wiphy.coverage_class = old_coverage_class;
1395 }
1396 }
1397
1398 bad_res:
1399 mutex_unlock(&rdev->mtx);
1400 if (netdev)
1401 dev_put(netdev);
1402 return result;
1403 }
1404
1405
1406 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1407 struct cfg80211_registered_device *rdev,
1408 struct net_device *dev)
1409 {
1410 void *hdr;
1411
1412 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1413 if (!hdr)
1414 return -1;
1415
1416 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1417 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1418 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1419 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1420
1421 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1422 rdev->devlist_generation ^
1423 (cfg80211_rdev_list_generation << 2));
1424
1425 return genlmsg_end(msg, hdr);
1426
1427 nla_put_failure:
1428 genlmsg_cancel(msg, hdr);
1429 return -EMSGSIZE;
1430 }
1431
1432 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1433 {
1434 int wp_idx = 0;
1435 int if_idx = 0;
1436 int wp_start = cb->args[0];
1437 int if_start = cb->args[1];
1438 struct cfg80211_registered_device *rdev;
1439 struct wireless_dev *wdev;
1440
1441 mutex_lock(&cfg80211_mutex);
1442 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1443 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1444 continue;
1445 if (wp_idx < wp_start) {
1446 wp_idx++;
1447 continue;
1448 }
1449 if_idx = 0;
1450
1451 mutex_lock(&rdev->devlist_mtx);
1452 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1453 if (if_idx < if_start) {
1454 if_idx++;
1455 continue;
1456 }
1457 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1458 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1459 rdev, wdev->netdev) < 0) {
1460 mutex_unlock(&rdev->devlist_mtx);
1461 goto out;
1462 }
1463 if_idx++;
1464 }
1465 mutex_unlock(&rdev->devlist_mtx);
1466
1467 wp_idx++;
1468 }
1469 out:
1470 mutex_unlock(&cfg80211_mutex);
1471
1472 cb->args[0] = wp_idx;
1473 cb->args[1] = if_idx;
1474
1475 return skb->len;
1476 }
1477
1478 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1479 {
1480 struct sk_buff *msg;
1481 struct cfg80211_registered_device *dev = info->user_ptr[0];
1482 struct net_device *netdev = info->user_ptr[1];
1483
1484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1485 if (!msg)
1486 return -ENOMEM;
1487
1488 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1489 dev, netdev) < 0) {
1490 nlmsg_free(msg);
1491 return -ENOBUFS;
1492 }
1493
1494 return genlmsg_reply(msg, info);
1495 }
1496
1497 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1498 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1499 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1500 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1501 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1502 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1503 };
1504
1505 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1506 {
1507 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1508 int flag;
1509
1510 *mntrflags = 0;
1511
1512 if (!nla)
1513 return -EINVAL;
1514
1515 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1516 nla, mntr_flags_policy))
1517 return -EINVAL;
1518
1519 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1520 if (flags[flag])
1521 *mntrflags |= (1<<flag);
1522
1523 return 0;
1524 }
1525
1526 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1527 struct net_device *netdev, u8 use_4addr,
1528 enum nl80211_iftype iftype)
1529 {
1530 if (!use_4addr) {
1531 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1532 return -EBUSY;
1533 return 0;
1534 }
1535
1536 switch (iftype) {
1537 case NL80211_IFTYPE_AP_VLAN:
1538 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1539 return 0;
1540 break;
1541 case NL80211_IFTYPE_STATION:
1542 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1543 return 0;
1544 break;
1545 default:
1546 break;
1547 }
1548
1549 return -EOPNOTSUPP;
1550 }
1551
1552 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1553 {
1554 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1555 struct vif_params params;
1556 int err;
1557 enum nl80211_iftype otype, ntype;
1558 struct net_device *dev = info->user_ptr[1];
1559 u32 _flags, *flags = NULL;
1560 bool change = false;
1561
1562 memset(&params, 0, sizeof(params));
1563
1564 otype = ntype = dev->ieee80211_ptr->iftype;
1565
1566 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1567 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1568 if (otype != ntype)
1569 change = true;
1570 if (ntype > NL80211_IFTYPE_MAX)
1571 return -EINVAL;
1572 }
1573
1574 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1575 struct wireless_dev *wdev = dev->ieee80211_ptr;
1576
1577 if (ntype != NL80211_IFTYPE_MESH_POINT)
1578 return -EINVAL;
1579 if (netif_running(dev))
1580 return -EBUSY;
1581
1582 wdev_lock(wdev);
1583 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1584 IEEE80211_MAX_MESH_ID_LEN);
1585 wdev->mesh_id_up_len =
1586 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1587 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1588 wdev->mesh_id_up_len);
1589 wdev_unlock(wdev);
1590 }
1591
1592 if (info->attrs[NL80211_ATTR_4ADDR]) {
1593 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1594 change = true;
1595 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1596 if (err)
1597 return err;
1598 } else {
1599 params.use_4addr = -1;
1600 }
1601
1602 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1603 if (ntype != NL80211_IFTYPE_MONITOR)
1604 return -EINVAL;
1605 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1606 &_flags);
1607 if (err)
1608 return err;
1609
1610 flags = &_flags;
1611 change = true;
1612 }
1613
1614 if (change)
1615 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1616 else
1617 err = 0;
1618
1619 if (!err && params.use_4addr != -1)
1620 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1621
1622 return err;
1623 }
1624
1625 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1626 {
1627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1628 struct vif_params params;
1629 struct net_device *dev;
1630 int err;
1631 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1632 u32 flags;
1633
1634 memset(&params, 0, sizeof(params));
1635
1636 if (!info->attrs[NL80211_ATTR_IFNAME])
1637 return -EINVAL;
1638
1639 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1640 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1641 if (type > NL80211_IFTYPE_MAX)
1642 return -EINVAL;
1643 }
1644
1645 if (!rdev->ops->add_virtual_intf ||
1646 !(rdev->wiphy.interface_modes & (1 << type)))
1647 return -EOPNOTSUPP;
1648
1649 if (info->attrs[NL80211_ATTR_4ADDR]) {
1650 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1651 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1652 if (err)
1653 return err;
1654 }
1655
1656 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1657 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1658 &flags);
1659 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1660 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1661 type, err ? NULL : &flags, &params);
1662 if (IS_ERR(dev))
1663 return PTR_ERR(dev);
1664
1665 if (type == NL80211_IFTYPE_MESH_POINT &&
1666 info->attrs[NL80211_ATTR_MESH_ID]) {
1667 struct wireless_dev *wdev = dev->ieee80211_ptr;
1668
1669 wdev_lock(wdev);
1670 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1671 IEEE80211_MAX_MESH_ID_LEN);
1672 wdev->mesh_id_up_len =
1673 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1674 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1675 wdev->mesh_id_up_len);
1676 wdev_unlock(wdev);
1677 }
1678
1679 return 0;
1680 }
1681
1682 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1683 {
1684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1685 struct net_device *dev = info->user_ptr[1];
1686
1687 if (!rdev->ops->del_virtual_intf)
1688 return -EOPNOTSUPP;
1689
1690 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1691 }
1692
1693 struct get_key_cookie {
1694 struct sk_buff *msg;
1695 int error;
1696 int idx;
1697 };
1698
1699 static void get_key_callback(void *c, struct key_params *params)
1700 {
1701 struct nlattr *key;
1702 struct get_key_cookie *cookie = c;
1703
1704 if (params->key)
1705 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1706 params->key_len, params->key);
1707
1708 if (params->seq)
1709 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1710 params->seq_len, params->seq);
1711
1712 if (params->cipher)
1713 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1714 params->cipher);
1715
1716 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1717 if (!key)
1718 goto nla_put_failure;
1719
1720 if (params->key)
1721 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1722 params->key_len, params->key);
1723
1724 if (params->seq)
1725 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1726 params->seq_len, params->seq);
1727
1728 if (params->cipher)
1729 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1730 params->cipher);
1731
1732 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1733
1734 nla_nest_end(cookie->msg, key);
1735
1736 return;
1737 nla_put_failure:
1738 cookie->error = 1;
1739 }
1740
1741 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1742 {
1743 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1744 int err;
1745 struct net_device *dev = info->user_ptr[1];
1746 u8 key_idx = 0;
1747 const u8 *mac_addr = NULL;
1748 bool pairwise;
1749 struct get_key_cookie cookie = {
1750 .error = 0,
1751 };
1752 void *hdr;
1753 struct sk_buff *msg;
1754
1755 if (info->attrs[NL80211_ATTR_KEY_IDX])
1756 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1757
1758 if (key_idx > 5)
1759 return -EINVAL;
1760
1761 if (info->attrs[NL80211_ATTR_MAC])
1762 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1763
1764 pairwise = !!mac_addr;
1765 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1766 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1767 if (kt >= NUM_NL80211_KEYTYPES)
1768 return -EINVAL;
1769 if (kt != NL80211_KEYTYPE_GROUP &&
1770 kt != NL80211_KEYTYPE_PAIRWISE)
1771 return -EINVAL;
1772 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1773 }
1774
1775 if (!rdev->ops->get_key)
1776 return -EOPNOTSUPP;
1777
1778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1779 if (!msg)
1780 return -ENOMEM;
1781
1782 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1783 NL80211_CMD_NEW_KEY);
1784 if (IS_ERR(hdr))
1785 return PTR_ERR(hdr);
1786
1787 cookie.msg = msg;
1788 cookie.idx = key_idx;
1789
1790 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1791 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1792 if (mac_addr)
1793 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1794
1795 if (pairwise && mac_addr &&
1796 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1797 return -ENOENT;
1798
1799 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1800 mac_addr, &cookie, get_key_callback);
1801
1802 if (err)
1803 goto free_msg;
1804
1805 if (cookie.error)
1806 goto nla_put_failure;
1807
1808 genlmsg_end(msg, hdr);
1809 return genlmsg_reply(msg, info);
1810
1811 nla_put_failure:
1812 err = -ENOBUFS;
1813 free_msg:
1814 nlmsg_free(msg);
1815 return err;
1816 }
1817
1818 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1819 {
1820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1821 struct key_parse key;
1822 int err;
1823 struct net_device *dev = info->user_ptr[1];
1824
1825 err = nl80211_parse_key(info, &key);
1826 if (err)
1827 return err;
1828
1829 if (key.idx < 0)
1830 return -EINVAL;
1831
1832 /* only support setting default key */
1833 if (!key.def && !key.defmgmt)
1834 return -EINVAL;
1835
1836 wdev_lock(dev->ieee80211_ptr);
1837
1838 if (key.def) {
1839 if (!rdev->ops->set_default_key) {
1840 err = -EOPNOTSUPP;
1841 goto out;
1842 }
1843
1844 err = nl80211_key_allowed(dev->ieee80211_ptr);
1845 if (err)
1846 goto out;
1847
1848 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1849 key.def_uni, key.def_multi);
1850
1851 if (err)
1852 goto out;
1853
1854 #ifdef CONFIG_CFG80211_WEXT
1855 dev->ieee80211_ptr->wext.default_key = key.idx;
1856 #endif
1857 } else {
1858 if (key.def_uni || !key.def_multi) {
1859 err = -EINVAL;
1860 goto out;
1861 }
1862
1863 if (!rdev->ops->set_default_mgmt_key) {
1864 err = -EOPNOTSUPP;
1865 goto out;
1866 }
1867
1868 err = nl80211_key_allowed(dev->ieee80211_ptr);
1869 if (err)
1870 goto out;
1871
1872 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1873 dev, key.idx);
1874 if (err)
1875 goto out;
1876
1877 #ifdef CONFIG_CFG80211_WEXT
1878 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1879 #endif
1880 }
1881
1882 out:
1883 wdev_unlock(dev->ieee80211_ptr);
1884
1885 return err;
1886 }
1887
1888 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1889 {
1890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1891 int err;
1892 struct net_device *dev = info->user_ptr[1];
1893 struct key_parse key;
1894 const u8 *mac_addr = NULL;
1895
1896 err = nl80211_parse_key(info, &key);
1897 if (err)
1898 return err;
1899
1900 if (!key.p.key)
1901 return -EINVAL;
1902
1903 if (info->attrs[NL80211_ATTR_MAC])
1904 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1905
1906 if (key.type == -1) {
1907 if (mac_addr)
1908 key.type = NL80211_KEYTYPE_PAIRWISE;
1909 else
1910 key.type = NL80211_KEYTYPE_GROUP;
1911 }
1912
1913 /* for now */
1914 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1915 key.type != NL80211_KEYTYPE_GROUP)
1916 return -EINVAL;
1917
1918 if (!rdev->ops->add_key)
1919 return -EOPNOTSUPP;
1920
1921 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1922 key.type == NL80211_KEYTYPE_PAIRWISE,
1923 mac_addr))
1924 return -EINVAL;
1925
1926 wdev_lock(dev->ieee80211_ptr);
1927 err = nl80211_key_allowed(dev->ieee80211_ptr);
1928 if (!err)
1929 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1930 key.type == NL80211_KEYTYPE_PAIRWISE,
1931 mac_addr, &key.p);
1932 wdev_unlock(dev->ieee80211_ptr);
1933
1934 return err;
1935 }
1936
1937 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1938 {
1939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1940 int err;
1941 struct net_device *dev = info->user_ptr[1];
1942 u8 *mac_addr = NULL;
1943 struct key_parse key;
1944
1945 err = nl80211_parse_key(info, &key);
1946 if (err)
1947 return err;
1948
1949 if (info->attrs[NL80211_ATTR_MAC])
1950 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1951
1952 if (key.type == -1) {
1953 if (mac_addr)
1954 key.type = NL80211_KEYTYPE_PAIRWISE;
1955 else
1956 key.type = NL80211_KEYTYPE_GROUP;
1957 }
1958
1959 /* for now */
1960 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1961 key.type != NL80211_KEYTYPE_GROUP)
1962 return -EINVAL;
1963
1964 if (!rdev->ops->del_key)
1965 return -EOPNOTSUPP;
1966
1967 wdev_lock(dev->ieee80211_ptr);
1968 err = nl80211_key_allowed(dev->ieee80211_ptr);
1969
1970 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1971 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1972 err = -ENOENT;
1973
1974 if (!err)
1975 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1976 key.type == NL80211_KEYTYPE_PAIRWISE,
1977 mac_addr);
1978
1979 #ifdef CONFIG_CFG80211_WEXT
1980 if (!err) {
1981 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1982 dev->ieee80211_ptr->wext.default_key = -1;
1983 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1984 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1985 }
1986 #endif
1987 wdev_unlock(dev->ieee80211_ptr);
1988
1989 return err;
1990 }
1991
1992 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1993 {
1994 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1995 struct beacon_parameters *info);
1996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1997 struct net_device *dev = info->user_ptr[1];
1998 struct wireless_dev *wdev = dev->ieee80211_ptr;
1999 struct beacon_parameters params;
2000 int haveinfo = 0, err;
2001
2002 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2003 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2004 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2005 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2006 return -EINVAL;
2007
2008 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2009 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2010 return -EOPNOTSUPP;
2011
2012 memset(&params, 0, sizeof(params));
2013
2014 switch (info->genlhdr->cmd) {
2015 case NL80211_CMD_NEW_BEACON:
2016 /* these are required for NEW_BEACON */
2017 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2018 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2019 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2020 return -EINVAL;
2021
2022 params.interval =
2023 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2024 params.dtim_period =
2025 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2026
2027 err = cfg80211_validate_beacon_int(rdev, params.interval);
2028 if (err)
2029 return err;
2030
2031 /*
2032 * In theory, some of these attributes could be required for
2033 * NEW_BEACON, but since they were not used when the command was
2034 * originally added, keep them optional for old user space
2035 * programs to work with drivers that do not need the additional
2036 * information.
2037 */
2038 if (info->attrs[NL80211_ATTR_SSID]) {
2039 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2040 params.ssid_len =
2041 nla_len(info->attrs[NL80211_ATTR_SSID]);
2042 if (params.ssid_len == 0 ||
2043 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2044 return -EINVAL;
2045 }
2046
2047 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2048 params.hidden_ssid = nla_get_u32(
2049 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2050 if (params.hidden_ssid !=
2051 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2052 params.hidden_ssid !=
2053 NL80211_HIDDEN_SSID_ZERO_LEN &&
2054 params.hidden_ssid !=
2055 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2056 return -EINVAL;
2057 }
2058
2059 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2060
2061 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2062 params.auth_type = nla_get_u32(
2063 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2064 if (!nl80211_valid_auth_type(params.auth_type))
2065 return -EINVAL;
2066 } else
2067 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2068
2069 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2070 NL80211_MAX_NR_CIPHER_SUITES);
2071 if (err)
2072 return err;
2073
2074 call = rdev->ops->add_beacon;
2075 break;
2076 case NL80211_CMD_SET_BEACON:
2077 call = rdev->ops->set_beacon;
2078 break;
2079 default:
2080 WARN_ON(1);
2081 return -EOPNOTSUPP;
2082 }
2083
2084 if (!call)
2085 return -EOPNOTSUPP;
2086
2087 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2088 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2089 params.head_len =
2090 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2091 haveinfo = 1;
2092 }
2093
2094 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2095 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2096 params.tail_len =
2097 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2098 haveinfo = 1;
2099 }
2100
2101 if (!haveinfo)
2102 return -EINVAL;
2103
2104 if (info->attrs[NL80211_ATTR_IE]) {
2105 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2106 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2107 }
2108
2109 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2110 params.proberesp_ies =
2111 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2112 params.proberesp_ies_len =
2113 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2114 }
2115
2116 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2117 params.assocresp_ies =
2118 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2119 params.assocresp_ies_len =
2120 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2121 }
2122
2123 err = call(&rdev->wiphy, dev, &params);
2124 if (!err && params.interval)
2125 wdev->beacon_interval = params.interval;
2126 return err;
2127 }
2128
2129 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2130 {
2131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2132 struct net_device *dev = info->user_ptr[1];
2133 struct wireless_dev *wdev = dev->ieee80211_ptr;
2134 int err;
2135
2136 if (!rdev->ops->del_beacon)
2137 return -EOPNOTSUPP;
2138
2139 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2140 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2141 return -EOPNOTSUPP;
2142
2143 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2144 if (!err)
2145 wdev->beacon_interval = 0;
2146 return err;
2147 }
2148
2149 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2150 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2151 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2152 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2153 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2154 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2155 };
2156
2157 static int parse_station_flags(struct genl_info *info,
2158 struct station_parameters *params)
2159 {
2160 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2161 struct nlattr *nla;
2162 int flag;
2163
2164 /*
2165 * Try parsing the new attribute first so userspace
2166 * can specify both for older kernels.
2167 */
2168 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2169 if (nla) {
2170 struct nl80211_sta_flag_update *sta_flags;
2171
2172 sta_flags = nla_data(nla);
2173 params->sta_flags_mask = sta_flags->mask;
2174 params->sta_flags_set = sta_flags->set;
2175 if ((params->sta_flags_mask |
2176 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2177 return -EINVAL;
2178 return 0;
2179 }
2180
2181 /* if present, parse the old attribute */
2182
2183 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2184 if (!nla)
2185 return 0;
2186
2187 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2188 nla, sta_flags_policy))
2189 return -EINVAL;
2190
2191 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2192 params->sta_flags_mask &= ~1;
2193
2194 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2195 if (flags[flag])
2196 params->sta_flags_set |= (1<<flag);
2197
2198 return 0;
2199 }
2200
2201 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2202 int attr)
2203 {
2204 struct nlattr *rate;
2205 u16 bitrate;
2206
2207 rate = nla_nest_start(msg, attr);
2208 if (!rate)
2209 goto nla_put_failure;
2210
2211 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2212 bitrate = cfg80211_calculate_bitrate(info);
2213 if (bitrate > 0)
2214 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2215
2216 if (info->flags & RATE_INFO_FLAGS_MCS)
2217 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2218 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2219 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2220 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2221 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2222
2223 nla_nest_end(msg, rate);
2224 return true;
2225
2226 nla_put_failure:
2227 return false;
2228 }
2229
2230 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2231 int flags, struct net_device *dev,
2232 const u8 *mac_addr, struct station_info *sinfo)
2233 {
2234 void *hdr;
2235 struct nlattr *sinfoattr, *bss_param;
2236
2237 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2238 if (!hdr)
2239 return -1;
2240
2241 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2242 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2243
2244 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2245
2246 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2247 if (!sinfoattr)
2248 goto nla_put_failure;
2249 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2250 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2251 sinfo->connected_time);
2252 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2253 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2254 sinfo->inactive_time);
2255 if (sinfo->filled & STATION_INFO_RX_BYTES)
2256 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2257 sinfo->rx_bytes);
2258 if (sinfo->filled & STATION_INFO_TX_BYTES)
2259 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2260 sinfo->tx_bytes);
2261 if (sinfo->filled & STATION_INFO_LLID)
2262 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2263 sinfo->llid);
2264 if (sinfo->filled & STATION_INFO_PLID)
2265 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2266 sinfo->plid);
2267 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2268 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2269 sinfo->plink_state);
2270 if (sinfo->filled & STATION_INFO_SIGNAL)
2271 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2272 sinfo->signal);
2273 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2274 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2275 sinfo->signal_avg);
2276 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2277 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2278 NL80211_STA_INFO_TX_BITRATE))
2279 goto nla_put_failure;
2280 }
2281 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2282 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2283 NL80211_STA_INFO_RX_BITRATE))
2284 goto nla_put_failure;
2285 }
2286 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2287 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2288 sinfo->rx_packets);
2289 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2290 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2291 sinfo->tx_packets);
2292 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2293 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2294 sinfo->tx_retries);
2295 if (sinfo->filled & STATION_INFO_TX_FAILED)
2296 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2297 sinfo->tx_failed);
2298 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2299 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2300 if (!bss_param)
2301 goto nla_put_failure;
2302
2303 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2304 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2305 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2306 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2307 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2308 NLA_PUT_FLAG(msg,
2309 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2310 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2311 sinfo->bss_param.dtim_period);
2312 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2313 sinfo->bss_param.beacon_interval);
2314
2315 nla_nest_end(msg, bss_param);
2316 }
2317 nla_nest_end(msg, sinfoattr);
2318
2319 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2320 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2321 sinfo->assoc_req_ies);
2322
2323 return genlmsg_end(msg, hdr);
2324
2325 nla_put_failure:
2326 genlmsg_cancel(msg, hdr);
2327 return -EMSGSIZE;
2328 }
2329
2330 static int nl80211_dump_station(struct sk_buff *skb,
2331 struct netlink_callback *cb)
2332 {
2333 struct station_info sinfo;
2334 struct cfg80211_registered_device *dev;
2335 struct net_device *netdev;
2336 u8 mac_addr[ETH_ALEN];
2337 int sta_idx = cb->args[1];
2338 int err;
2339
2340 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2341 if (err)
2342 return err;
2343
2344 if (!dev->ops->dump_station) {
2345 err = -EOPNOTSUPP;
2346 goto out_err;
2347 }
2348
2349 while (1) {
2350 memset(&sinfo, 0, sizeof(sinfo));
2351 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2352 mac_addr, &sinfo);
2353 if (err == -ENOENT)
2354 break;
2355 if (err)
2356 goto out_err;
2357
2358 if (nl80211_send_station(skb,
2359 NETLINK_CB(cb->skb).pid,
2360 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2361 netdev, mac_addr,
2362 &sinfo) < 0)
2363 goto out;
2364
2365 sta_idx++;
2366 }
2367
2368
2369 out:
2370 cb->args[1] = sta_idx;
2371 err = skb->len;
2372 out_err:
2373 nl80211_finish_netdev_dump(dev);
2374
2375 return err;
2376 }
2377
2378 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2379 {
2380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2381 struct net_device *dev = info->user_ptr[1];
2382 struct station_info sinfo;
2383 struct sk_buff *msg;
2384 u8 *mac_addr = NULL;
2385 int err;
2386
2387 memset(&sinfo, 0, sizeof(sinfo));
2388
2389 if (!info->attrs[NL80211_ATTR_MAC])
2390 return -EINVAL;
2391
2392 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2393
2394 if (!rdev->ops->get_station)
2395 return -EOPNOTSUPP;
2396
2397 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2398 if (err)
2399 return err;
2400
2401 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2402 if (!msg)
2403 return -ENOMEM;
2404
2405 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2406 dev, mac_addr, &sinfo) < 0) {
2407 nlmsg_free(msg);
2408 return -ENOBUFS;
2409 }
2410
2411 return genlmsg_reply(msg, info);
2412 }
2413
2414 /*
2415 * Get vlan interface making sure it is running and on the right wiphy.
2416 */
2417 static int get_vlan(struct genl_info *info,
2418 struct cfg80211_registered_device *rdev,
2419 struct net_device **vlan)
2420 {
2421 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2422 *vlan = NULL;
2423
2424 if (vlanattr) {
2425 *vlan = dev_get_by_index(genl_info_net(info),
2426 nla_get_u32(vlanattr));
2427 if (!*vlan)
2428 return -ENODEV;
2429 if (!(*vlan)->ieee80211_ptr)
2430 return -EINVAL;
2431 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2432 return -EINVAL;
2433 if (!netif_running(*vlan))
2434 return -ENETDOWN;
2435 }
2436 return 0;
2437 }
2438
2439 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2440 {
2441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2442 int err;
2443 struct net_device *dev = info->user_ptr[1];
2444 struct station_parameters params;
2445 u8 *mac_addr = NULL;
2446
2447 memset(&params, 0, sizeof(params));
2448
2449 params.listen_interval = -1;
2450 params.plink_state = -1;
2451
2452 if (info->attrs[NL80211_ATTR_STA_AID])
2453 return -EINVAL;
2454
2455 if (!info->attrs[NL80211_ATTR_MAC])
2456 return -EINVAL;
2457
2458 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2459
2460 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2461 params.supported_rates =
2462 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2463 params.supported_rates_len =
2464 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2465 }
2466
2467 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2468 params.listen_interval =
2469 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2470
2471 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2472 params.ht_capa =
2473 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2474
2475 if (parse_station_flags(info, &params))
2476 return -EINVAL;
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 (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2483 params.plink_state =
2484 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2485
2486 err = get_vlan(info, rdev, &params.vlan);
2487 if (err)
2488 goto out;
2489
2490 /* validate settings */
2491 err = 0;
2492
2493 switch (dev->ieee80211_ptr->iftype) {
2494 case NL80211_IFTYPE_AP:
2495 case NL80211_IFTYPE_AP_VLAN:
2496 case NL80211_IFTYPE_P2P_GO:
2497 /* disallow mesh-specific things */
2498 if (params.plink_action)
2499 err = -EINVAL;
2500 break;
2501 case NL80211_IFTYPE_P2P_CLIENT:
2502 case NL80211_IFTYPE_STATION:
2503 /* disallow everything but AUTHORIZED flag */
2504 if (params.plink_action)
2505 err = -EINVAL;
2506 if (params.vlan)
2507 err = -EINVAL;
2508 if (params.supported_rates)
2509 err = -EINVAL;
2510 if (params.ht_capa)
2511 err = -EINVAL;
2512 if (params.listen_interval >= 0)
2513 err = -EINVAL;
2514 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2515 err = -EINVAL;
2516 break;
2517 case NL80211_IFTYPE_MESH_POINT:
2518 /* disallow things mesh doesn't support */
2519 if (params.vlan)
2520 err = -EINVAL;
2521 if (params.ht_capa)
2522 err = -EINVAL;
2523 if (params.listen_interval >= 0)
2524 err = -EINVAL;
2525 if (params.sta_flags_mask &
2526 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2527 BIT(NL80211_STA_FLAG_MFP) |
2528 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2529 err = -EINVAL;
2530 break;
2531 default:
2532 err = -EINVAL;
2533 }
2534
2535 if (err)
2536 goto out;
2537
2538 if (!rdev->ops->change_station) {
2539 err = -EOPNOTSUPP;
2540 goto out;
2541 }
2542
2543 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2544
2545 out:
2546 if (params.vlan)
2547 dev_put(params.vlan);
2548
2549 return err;
2550 }
2551
2552 static struct nla_policy
2553 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2554 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2555 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2556 };
2557
2558 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2559 {
2560 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2561 int err;
2562 struct net_device *dev = info->user_ptr[1];
2563 struct station_parameters params;
2564 u8 *mac_addr = NULL;
2565
2566 memset(&params, 0, sizeof(params));
2567
2568 if (!info->attrs[NL80211_ATTR_MAC])
2569 return -EINVAL;
2570
2571 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2572 return -EINVAL;
2573
2574 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2575 return -EINVAL;
2576
2577 if (!info->attrs[NL80211_ATTR_STA_AID])
2578 return -EINVAL;
2579
2580 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2581 params.supported_rates =
2582 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2583 params.supported_rates_len =
2584 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2585 params.listen_interval =
2586 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2587
2588 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2589 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2590 return -EINVAL;
2591
2592 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2593 params.ht_capa =
2594 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2595
2596 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2597 params.plink_action =
2598 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2599
2600 if (parse_station_flags(info, &params))
2601 return -EINVAL;
2602
2603 /* parse WME attributes if sta is WME capable */
2604 if ((params.sta_flags_set & NL80211_STA_FLAG_WME) &&
2605 info->attrs[NL80211_ATTR_STA_WME]) {
2606 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2607 struct nlattr *nla;
2608
2609 nla = info->attrs[NL80211_ATTR_STA_WME];
2610 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2611 nl80211_sta_wme_policy);
2612 if (err)
2613 return err;
2614
2615 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2616 params.uapsd_queues =
2617 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2618
2619 if (tb[NL80211_STA_WME_MAX_SP])
2620 params.max_sp =
2621 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2622 }
2623
2624 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2625 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2626 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2627 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2628 return -EINVAL;
2629
2630 err = get_vlan(info, rdev, &params.vlan);
2631 if (err)
2632 goto out;
2633
2634 /* validate settings */
2635 err = 0;
2636
2637 if (!rdev->ops->add_station) {
2638 err = -EOPNOTSUPP;
2639 goto out;
2640 }
2641
2642 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2643
2644 out:
2645 if (params.vlan)
2646 dev_put(params.vlan);
2647 return err;
2648 }
2649
2650 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2651 {
2652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2653 struct net_device *dev = info->user_ptr[1];
2654 u8 *mac_addr = NULL;
2655
2656 if (info->attrs[NL80211_ATTR_MAC])
2657 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2658
2659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2660 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2661 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2662 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2663 return -EINVAL;
2664
2665 if (!rdev->ops->del_station)
2666 return -EOPNOTSUPP;
2667
2668 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2669 }
2670
2671 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2672 int flags, struct net_device *dev,
2673 u8 *dst, u8 *next_hop,
2674 struct mpath_info *pinfo)
2675 {
2676 void *hdr;
2677 struct nlattr *pinfoattr;
2678
2679 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2680 if (!hdr)
2681 return -1;
2682
2683 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2684 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2685 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2686
2687 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2688
2689 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2690 if (!pinfoattr)
2691 goto nla_put_failure;
2692 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2693 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2694 pinfo->frame_qlen);
2695 if (pinfo->filled & MPATH_INFO_SN)
2696 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2697 pinfo->sn);
2698 if (pinfo->filled & MPATH_INFO_METRIC)
2699 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2700 pinfo->metric);
2701 if (pinfo->filled & MPATH_INFO_EXPTIME)
2702 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2703 pinfo->exptime);
2704 if (pinfo->filled & MPATH_INFO_FLAGS)
2705 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2706 pinfo->flags);
2707 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2708 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2709 pinfo->discovery_timeout);
2710 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2711 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2712 pinfo->discovery_retries);
2713
2714 nla_nest_end(msg, pinfoattr);
2715
2716 return genlmsg_end(msg, hdr);
2717
2718 nla_put_failure:
2719 genlmsg_cancel(msg, hdr);
2720 return -EMSGSIZE;
2721 }
2722
2723 static int nl80211_dump_mpath(struct sk_buff *skb,
2724 struct netlink_callback *cb)
2725 {
2726 struct mpath_info pinfo;
2727 struct cfg80211_registered_device *dev;
2728 struct net_device *netdev;
2729 u8 dst[ETH_ALEN];
2730 u8 next_hop[ETH_ALEN];
2731 int path_idx = cb->args[1];
2732 int err;
2733
2734 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2735 if (err)
2736 return err;
2737
2738 if (!dev->ops->dump_mpath) {
2739 err = -EOPNOTSUPP;
2740 goto out_err;
2741 }
2742
2743 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2744 err = -EOPNOTSUPP;
2745 goto out_err;
2746 }
2747
2748 while (1) {
2749 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2750 dst, next_hop, &pinfo);
2751 if (err == -ENOENT)
2752 break;
2753 if (err)
2754 goto out_err;
2755
2756 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2757 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2758 netdev, dst, next_hop,
2759 &pinfo) < 0)
2760 goto out;
2761
2762 path_idx++;
2763 }
2764
2765
2766 out:
2767 cb->args[1] = path_idx;
2768 err = skb->len;
2769 out_err:
2770 nl80211_finish_netdev_dump(dev);
2771 return err;
2772 }
2773
2774 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2775 {
2776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2777 int err;
2778 struct net_device *dev = info->user_ptr[1];
2779 struct mpath_info pinfo;
2780 struct sk_buff *msg;
2781 u8 *dst = NULL;
2782 u8 next_hop[ETH_ALEN];
2783
2784 memset(&pinfo, 0, sizeof(pinfo));
2785
2786 if (!info->attrs[NL80211_ATTR_MAC])
2787 return -EINVAL;
2788
2789 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2790
2791 if (!rdev->ops->get_mpath)
2792 return -EOPNOTSUPP;
2793
2794 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2795 return -EOPNOTSUPP;
2796
2797 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2798 if (err)
2799 return err;
2800
2801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2802 if (!msg)
2803 return -ENOMEM;
2804
2805 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2806 dev, dst, next_hop, &pinfo) < 0) {
2807 nlmsg_free(msg);
2808 return -ENOBUFS;
2809 }
2810
2811 return genlmsg_reply(msg, info);
2812 }
2813
2814 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2815 {
2816 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2817 struct net_device *dev = info->user_ptr[1];
2818 u8 *dst = NULL;
2819 u8 *next_hop = NULL;
2820
2821 if (!info->attrs[NL80211_ATTR_MAC])
2822 return -EINVAL;
2823
2824 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2825 return -EINVAL;
2826
2827 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2828 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2829
2830 if (!rdev->ops->change_mpath)
2831 return -EOPNOTSUPP;
2832
2833 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2834 return -EOPNOTSUPP;
2835
2836 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2837 }
2838
2839 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2840 {
2841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842 struct net_device *dev = info->user_ptr[1];
2843 u8 *dst = NULL;
2844 u8 *next_hop = NULL;
2845
2846 if (!info->attrs[NL80211_ATTR_MAC])
2847 return -EINVAL;
2848
2849 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2850 return -EINVAL;
2851
2852 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2853 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2854
2855 if (!rdev->ops->add_mpath)
2856 return -EOPNOTSUPP;
2857
2858 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2859 return -EOPNOTSUPP;
2860
2861 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2862 }
2863
2864 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2865 {
2866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2867 struct net_device *dev = info->user_ptr[1];
2868 u8 *dst = NULL;
2869
2870 if (info->attrs[NL80211_ATTR_MAC])
2871 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2872
2873 if (!rdev->ops->del_mpath)
2874 return -EOPNOTSUPP;
2875
2876 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2877 }
2878
2879 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2880 {
2881 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2882 struct net_device *dev = info->user_ptr[1];
2883 struct bss_parameters params;
2884
2885 memset(&params, 0, sizeof(params));
2886 /* default to not changing parameters */
2887 params.use_cts_prot = -1;
2888 params.use_short_preamble = -1;
2889 params.use_short_slot_time = -1;
2890 params.ap_isolate = -1;
2891 params.ht_opmode = -1;
2892
2893 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2894 params.use_cts_prot =
2895 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2896 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2897 params.use_short_preamble =
2898 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2899 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2900 params.use_short_slot_time =
2901 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2902 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2903 params.basic_rates =
2904 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2905 params.basic_rates_len =
2906 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2907 }
2908 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2909 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2910 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2911 params.ht_opmode =
2912 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2913
2914 if (!rdev->ops->change_bss)
2915 return -EOPNOTSUPP;
2916
2917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2918 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2919 return -EOPNOTSUPP;
2920
2921 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2922 }
2923
2924 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2925 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2926 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2927 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2928 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2929 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2930 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2931 };
2932
2933 static int parse_reg_rule(struct nlattr *tb[],
2934 struct ieee80211_reg_rule *reg_rule)
2935 {
2936 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2937 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2938
2939 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2940 return -EINVAL;
2941 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2942 return -EINVAL;
2943 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2944 return -EINVAL;
2945 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2946 return -EINVAL;
2947 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2948 return -EINVAL;
2949
2950 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2951
2952 freq_range->start_freq_khz =
2953 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2954 freq_range->end_freq_khz =
2955 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2956 freq_range->max_bandwidth_khz =
2957 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2958
2959 power_rule->max_eirp =
2960 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2961
2962 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2963 power_rule->max_antenna_gain =
2964 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2965
2966 return 0;
2967 }
2968
2969 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2970 {
2971 int r;
2972 char *data = NULL;
2973
2974 /*
2975 * You should only get this when cfg80211 hasn't yet initialized
2976 * completely when built-in to the kernel right between the time
2977 * window between nl80211_init() and regulatory_init(), if that is
2978 * even possible.
2979 */
2980 mutex_lock(&cfg80211_mutex);
2981 if (unlikely(!cfg80211_regdomain)) {
2982 mutex_unlock(&cfg80211_mutex);
2983 return -EINPROGRESS;
2984 }
2985 mutex_unlock(&cfg80211_mutex);
2986
2987 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2988 return -EINVAL;
2989
2990 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2991
2992 r = regulatory_hint_user(data);
2993
2994 return r;
2995 }
2996
2997 static int nl80211_get_mesh_config(struct sk_buff *skb,
2998 struct genl_info *info)
2999 {
3000 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3001 struct net_device *dev = info->user_ptr[1];
3002 struct wireless_dev *wdev = dev->ieee80211_ptr;
3003 struct mesh_config cur_params;
3004 int err = 0;
3005 void *hdr;
3006 struct nlattr *pinfoattr;
3007 struct sk_buff *msg;
3008
3009 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3010 return -EOPNOTSUPP;
3011
3012 if (!rdev->ops->get_mesh_config)
3013 return -EOPNOTSUPP;
3014
3015 wdev_lock(wdev);
3016 /* If not connected, get default parameters */
3017 if (!wdev->mesh_id_len)
3018 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3019 else
3020 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3021 &cur_params);
3022 wdev_unlock(wdev);
3023
3024 if (err)
3025 return err;
3026
3027 /* Draw up a netlink message to send back */
3028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3029 if (!msg)
3030 return -ENOMEM;
3031 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3032 NL80211_CMD_GET_MESH_CONFIG);
3033 if (!hdr)
3034 goto out;
3035 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3036 if (!pinfoattr)
3037 goto nla_put_failure;
3038 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3039 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3040 cur_params.dot11MeshRetryTimeout);
3041 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3042 cur_params.dot11MeshConfirmTimeout);
3043 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3044 cur_params.dot11MeshHoldingTimeout);
3045 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3046 cur_params.dot11MeshMaxPeerLinks);
3047 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3048 cur_params.dot11MeshMaxRetries);
3049 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3050 cur_params.dot11MeshTTL);
3051 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3052 cur_params.element_ttl);
3053 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3054 cur_params.auto_open_plinks);
3055 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3056 cur_params.dot11MeshHWMPmaxPREQretries);
3057 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3058 cur_params.path_refresh_time);
3059 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3060 cur_params.min_discovery_timeout);
3061 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3062 cur_params.dot11MeshHWMPactivePathTimeout);
3063 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3064 cur_params.dot11MeshHWMPpreqMinInterval);
3065 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3066 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3067 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3068 cur_params.dot11MeshHWMPRootMode);
3069 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3070 cur_params.dot11MeshHWMPRannInterval);
3071 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3072 cur_params.dot11MeshGateAnnouncementProtocol);
3073 nla_nest_end(msg, pinfoattr);
3074 genlmsg_end(msg, hdr);
3075 return genlmsg_reply(msg, info);
3076
3077 nla_put_failure:
3078 genlmsg_cancel(msg, hdr);
3079 out:
3080 nlmsg_free(msg);
3081 return -ENOBUFS;
3082 }
3083
3084 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3085 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3086 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3087 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3088 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3089 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3090 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3091 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3092 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3093
3094 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3095 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3096 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3097 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3098 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3099 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3100 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3101 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3102 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3103 };
3104
3105 static const struct nla_policy
3106 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3107 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3108 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3109 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3110 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3111 .len = IEEE80211_MAX_DATA_LEN },
3112 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3113 };
3114
3115 static int nl80211_parse_mesh_config(struct genl_info *info,
3116 struct mesh_config *cfg,
3117 u32 *mask_out)
3118 {
3119 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3120 u32 mask = 0;
3121
3122 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3123 do {\
3124 if (table[attr_num]) {\
3125 cfg->param = nla_fn(table[attr_num]); \
3126 mask |= (1 << (attr_num - 1)); \
3127 } \
3128 } while (0);\
3129
3130
3131 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3132 return -EINVAL;
3133 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3134 info->attrs[NL80211_ATTR_MESH_CONFIG],
3135 nl80211_meshconf_params_policy))
3136 return -EINVAL;
3137
3138 /* This makes sure that there aren't more than 32 mesh config
3139 * parameters (otherwise our bitfield scheme would not work.) */
3140 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3141
3142 /* Fill in the params struct */
3143 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3144 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3145 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3146 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3147 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3148 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3149 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3150 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3151 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3152 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3154 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3155 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3156 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3157 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3158 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3159 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3160 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3161 nla_get_u8);
3162 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3163 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3164 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3165 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3166 nla_get_u16);
3167 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3168 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3169 nla_get_u32);
3170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3171 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3172 nla_get_u16);
3173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3174 dot11MeshHWMPnetDiameterTraversalTime,
3175 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3176 nla_get_u16);
3177 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3178 dot11MeshHWMPRootMode, mask,
3179 NL80211_MESHCONF_HWMP_ROOTMODE,
3180 nla_get_u8);
3181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3182 dot11MeshHWMPRannInterval, mask,
3183 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3184 nla_get_u16);
3185 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3186 dot11MeshGateAnnouncementProtocol, mask,
3187 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3188 nla_get_u8);
3189 if (mask_out)
3190 *mask_out = mask;
3191
3192 return 0;
3193
3194 #undef FILL_IN_MESH_PARAM_IF_SET
3195 }
3196
3197 static int nl80211_parse_mesh_setup(struct genl_info *info,
3198 struct mesh_setup *setup)
3199 {
3200 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3201
3202 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3203 return -EINVAL;
3204 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3205 info->attrs[NL80211_ATTR_MESH_SETUP],
3206 nl80211_mesh_setup_params_policy))
3207 return -EINVAL;
3208
3209 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3210 setup->path_sel_proto =
3211 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3212 IEEE80211_PATH_PROTOCOL_VENDOR :
3213 IEEE80211_PATH_PROTOCOL_HWMP;
3214
3215 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3216 setup->path_metric =
3217 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3218 IEEE80211_PATH_METRIC_VENDOR :
3219 IEEE80211_PATH_METRIC_AIRTIME;
3220
3221
3222 if (tb[NL80211_MESH_SETUP_IE]) {
3223 struct nlattr *ieattr =
3224 tb[NL80211_MESH_SETUP_IE];
3225 if (!is_valid_ie_attr(ieattr))
3226 return -EINVAL;
3227 setup->ie = nla_data(ieattr);
3228 setup->ie_len = nla_len(ieattr);
3229 }
3230 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3231 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3232
3233 return 0;
3234 }
3235
3236 static int nl80211_update_mesh_config(struct sk_buff *skb,
3237 struct genl_info *info)
3238 {
3239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3240 struct net_device *dev = info->user_ptr[1];
3241 struct wireless_dev *wdev = dev->ieee80211_ptr;
3242 struct mesh_config cfg;
3243 u32 mask;
3244 int err;
3245
3246 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3247 return -EOPNOTSUPP;
3248
3249 if (!rdev->ops->update_mesh_config)
3250 return -EOPNOTSUPP;
3251
3252 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3253 if (err)
3254 return err;
3255
3256 wdev_lock(wdev);
3257 if (!wdev->mesh_id_len)
3258 err = -ENOLINK;
3259
3260 if (!err)
3261 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3262 mask, &cfg);
3263
3264 wdev_unlock(wdev);
3265
3266 return err;
3267 }
3268
3269 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3270 {
3271 struct sk_buff *msg;
3272 void *hdr = NULL;
3273 struct nlattr *nl_reg_rules;
3274 unsigned int i;
3275 int err = -EINVAL;
3276
3277 mutex_lock(&cfg80211_mutex);
3278
3279 if (!cfg80211_regdomain)
3280 goto out;
3281
3282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3283 if (!msg) {
3284 err = -ENOBUFS;
3285 goto out;
3286 }
3287
3288 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3289 NL80211_CMD_GET_REG);
3290 if (!hdr)
3291 goto put_failure;
3292
3293 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3294 cfg80211_regdomain->alpha2);
3295
3296 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3297 if (!nl_reg_rules)
3298 goto nla_put_failure;
3299
3300 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3301 struct nlattr *nl_reg_rule;
3302 const struct ieee80211_reg_rule *reg_rule;
3303 const struct ieee80211_freq_range *freq_range;
3304 const struct ieee80211_power_rule *power_rule;
3305
3306 reg_rule = &cfg80211_regdomain->reg_rules[i];
3307 freq_range = &reg_rule->freq_range;
3308 power_rule = &reg_rule->power_rule;
3309
3310 nl_reg_rule = nla_nest_start(msg, i);
3311 if (!nl_reg_rule)
3312 goto nla_put_failure;
3313
3314 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3315 reg_rule->flags);
3316 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3317 freq_range->start_freq_khz);
3318 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3319 freq_range->end_freq_khz);
3320 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3321 freq_range->max_bandwidth_khz);
3322 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3323 power_rule->max_antenna_gain);
3324 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3325 power_rule->max_eirp);
3326
3327 nla_nest_end(msg, nl_reg_rule);
3328 }
3329
3330 nla_nest_end(msg, nl_reg_rules);
3331
3332 genlmsg_end(msg, hdr);
3333 err = genlmsg_reply(msg, info);
3334 goto out;
3335
3336 nla_put_failure:
3337 genlmsg_cancel(msg, hdr);
3338 put_failure:
3339 nlmsg_free(msg);
3340 err = -EMSGSIZE;
3341 out:
3342 mutex_unlock(&cfg80211_mutex);
3343 return err;
3344 }
3345
3346 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3347 {
3348 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3349 struct nlattr *nl_reg_rule;
3350 char *alpha2 = NULL;
3351 int rem_reg_rules = 0, r = 0;
3352 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3353 struct ieee80211_regdomain *rd = NULL;
3354
3355 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3356 return -EINVAL;
3357
3358 if (!info->attrs[NL80211_ATTR_REG_RULES])
3359 return -EINVAL;
3360
3361 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3362
3363 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3364 rem_reg_rules) {
3365 num_rules++;
3366 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3367 return -EINVAL;
3368 }
3369
3370 mutex_lock(&cfg80211_mutex);
3371
3372 if (!reg_is_valid_request(alpha2)) {
3373 r = -EINVAL;
3374 goto bad_reg;
3375 }
3376
3377 size_of_regd = sizeof(struct ieee80211_regdomain) +
3378 (num_rules * sizeof(struct ieee80211_reg_rule));
3379
3380 rd = kzalloc(size_of_regd, GFP_KERNEL);
3381 if (!rd) {
3382 r = -ENOMEM;
3383 goto bad_reg;
3384 }
3385
3386 rd->n_reg_rules = num_rules;
3387 rd->alpha2[0] = alpha2[0];
3388 rd->alpha2[1] = alpha2[1];
3389
3390 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3391 rem_reg_rules) {
3392 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3393 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3394 reg_rule_policy);
3395 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3396 if (r)
3397 goto bad_reg;
3398
3399 rule_idx++;
3400
3401 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3402 r = -EINVAL;
3403 goto bad_reg;
3404 }
3405 }
3406
3407 BUG_ON(rule_idx != num_rules);
3408
3409 r = set_regdom(rd);
3410
3411 mutex_unlock(&cfg80211_mutex);
3412
3413 return r;
3414
3415 bad_reg:
3416 mutex_unlock(&cfg80211_mutex);
3417 kfree(rd);
3418 return r;
3419 }
3420
3421 static int validate_scan_freqs(struct nlattr *freqs)
3422 {
3423 struct nlattr *attr1, *attr2;
3424 int n_channels = 0, tmp1, tmp2;
3425
3426 nla_for_each_nested(attr1, freqs, tmp1) {
3427 n_channels++;
3428 /*
3429 * Some hardware has a limited channel list for
3430 * scanning, and it is pretty much nonsensical
3431 * to scan for a channel twice, so disallow that
3432 * and don't require drivers to check that the
3433 * channel list they get isn't longer than what
3434 * they can scan, as long as they can scan all
3435 * the channels they registered at once.
3436 */
3437 nla_for_each_nested(attr2, freqs, tmp2)
3438 if (attr1 != attr2 &&
3439 nla_get_u32(attr1) == nla_get_u32(attr2))
3440 return 0;
3441 }
3442
3443 return n_channels;
3444 }
3445
3446 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3447 {
3448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3449 struct net_device *dev = info->user_ptr[1];
3450 struct cfg80211_scan_request *request;
3451 struct nlattr *attr;
3452 struct wiphy *wiphy;
3453 int err, tmp, n_ssids = 0, n_channels, i;
3454 size_t ie_len;
3455
3456 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3457 return -EINVAL;
3458
3459 wiphy = &rdev->wiphy;
3460
3461 if (!rdev->ops->scan)
3462 return -EOPNOTSUPP;
3463
3464 if (rdev->scan_req)
3465 return -EBUSY;
3466
3467 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3468 n_channels = validate_scan_freqs(
3469 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3470 if (!n_channels)
3471 return -EINVAL;
3472 } else {
3473 enum ieee80211_band band;
3474 n_channels = 0;
3475
3476 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3477 if (wiphy->bands[band])
3478 n_channels += wiphy->bands[band]->n_channels;
3479 }
3480
3481 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3482 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3483 n_ssids++;
3484
3485 if (n_ssids > wiphy->max_scan_ssids)
3486 return -EINVAL;
3487
3488 if (info->attrs[NL80211_ATTR_IE])
3489 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3490 else
3491 ie_len = 0;
3492
3493 if (ie_len > wiphy->max_scan_ie_len)
3494 return -EINVAL;
3495
3496 request = kzalloc(sizeof(*request)
3497 + sizeof(*request->ssids) * n_ssids
3498 + sizeof(*request->channels) * n_channels
3499 + ie_len, GFP_KERNEL);
3500 if (!request)
3501 return -ENOMEM;
3502
3503 if (n_ssids)
3504 request->ssids = (void *)&request->channels[n_channels];
3505 request->n_ssids = n_ssids;
3506 if (ie_len) {
3507 if (request->ssids)
3508 request->ie = (void *)(request->ssids + n_ssids);
3509 else
3510 request->ie = (void *)(request->channels + n_channels);
3511 }
3512
3513 i = 0;
3514 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3515 /* user specified, bail out if channel not found */
3516 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3517 struct ieee80211_channel *chan;
3518
3519 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3520
3521 if (!chan) {
3522 err = -EINVAL;
3523 goto out_free;
3524 }
3525
3526 /* ignore disabled channels */
3527 if (chan->flags & IEEE80211_CHAN_DISABLED)
3528 continue;
3529
3530 request->channels[i] = chan;
3531 i++;
3532 }
3533 } else {
3534 enum ieee80211_band band;
3535
3536 /* all channels */
3537 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3538 int j;
3539 if (!wiphy->bands[band])
3540 continue;
3541 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3542 struct ieee80211_channel *chan;
3543
3544 chan = &wiphy->bands[band]->channels[j];
3545
3546 if (chan->flags & IEEE80211_CHAN_DISABLED)
3547 continue;
3548
3549 request->channels[i] = chan;
3550 i++;
3551 }
3552 }
3553 }
3554
3555 if (!i) {
3556 err = -EINVAL;
3557 goto out_free;
3558 }
3559
3560 request->n_channels = i;
3561
3562 i = 0;
3563 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3564 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3565 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3566 err = -EINVAL;
3567 goto out_free;
3568 }
3569 request->ssids[i].ssid_len = nla_len(attr);
3570 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3571 i++;
3572 }
3573 }
3574
3575 if (info->attrs[NL80211_ATTR_IE]) {
3576 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3577 memcpy((void *)request->ie,
3578 nla_data(info->attrs[NL80211_ATTR_IE]),
3579 request->ie_len);
3580 }
3581
3582 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3583 if (wiphy->bands[i])
3584 request->rates[i] =
3585 (1 << wiphy->bands[i]->n_bitrates) - 1;
3586
3587 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3588 nla_for_each_nested(attr,
3589 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3590 tmp) {
3591 enum ieee80211_band band = nla_type(attr);
3592
3593 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3594 err = -EINVAL;
3595 goto out_free;
3596 }
3597 err = ieee80211_get_ratemask(wiphy->bands[band],
3598 nla_data(attr),
3599 nla_len(attr),
3600 &request->rates[band]);
3601 if (err)
3602 goto out_free;
3603 }
3604 }
3605
3606 request->dev = dev;
3607 request->wiphy = &rdev->wiphy;
3608
3609 rdev->scan_req = request;
3610 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3611
3612 if (!err) {
3613 nl80211_send_scan_start(rdev, dev);
3614 dev_hold(dev);
3615 } else {
3616 out_free:
3617 rdev->scan_req = NULL;
3618 kfree(request);
3619 }
3620
3621 return err;
3622 }
3623
3624 static int nl80211_start_sched_scan(struct sk_buff *skb,
3625 struct genl_info *info)
3626 {
3627 struct cfg80211_sched_scan_request *request;
3628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3629 struct net_device *dev = info->user_ptr[1];
3630 struct nlattr *attr;
3631 struct wiphy *wiphy;
3632 int err, tmp, n_ssids = 0, n_channels, i;
3633 u32 interval;
3634 enum ieee80211_band band;
3635 size_t ie_len;
3636
3637 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3638 !rdev->ops->sched_scan_start)
3639 return -EOPNOTSUPP;
3640
3641 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3642 return -EINVAL;
3643
3644 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3645 return -EINVAL;
3646
3647 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3648 if (interval == 0)
3649 return -EINVAL;
3650
3651 wiphy = &rdev->wiphy;
3652
3653 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3654 n_channels = validate_scan_freqs(
3655 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3656 if (!n_channels)
3657 return -EINVAL;
3658 } else {
3659 n_channels = 0;
3660
3661 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3662 if (wiphy->bands[band])
3663 n_channels += wiphy->bands[band]->n_channels;
3664 }
3665
3666 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3667 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3668 tmp)
3669 n_ssids++;
3670
3671 if (n_ssids > wiphy->max_sched_scan_ssids)
3672 return -EINVAL;
3673
3674 if (info->attrs[NL80211_ATTR_IE])
3675 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3676 else
3677 ie_len = 0;
3678
3679 if (ie_len > wiphy->max_sched_scan_ie_len)
3680 return -EINVAL;
3681
3682 mutex_lock(&rdev->sched_scan_mtx);
3683
3684 if (rdev->sched_scan_req) {
3685 err = -EINPROGRESS;
3686 goto out;
3687 }
3688
3689 request = kzalloc(sizeof(*request)
3690 + sizeof(*request->ssids) * n_ssids
3691 + sizeof(*request->channels) * n_channels
3692 + ie_len, GFP_KERNEL);
3693 if (!request) {
3694 err = -ENOMEM;
3695 goto out;
3696 }
3697
3698 if (n_ssids)
3699 request->ssids = (void *)&request->channels[n_channels];
3700 request->n_ssids = n_ssids;
3701 if (ie_len) {
3702 if (request->ssids)
3703 request->ie = (void *)(request->ssids + n_ssids);
3704 else
3705 request->ie = (void *)(request->channels + n_channels);
3706 }
3707
3708 i = 0;
3709 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3710 /* user specified, bail out if channel not found */
3711 nla_for_each_nested(attr,
3712 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3713 tmp) {
3714 struct ieee80211_channel *chan;
3715
3716 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3717
3718 if (!chan) {
3719 err = -EINVAL;
3720 goto out_free;
3721 }
3722
3723 /* ignore disabled channels */
3724 if (chan->flags & IEEE80211_CHAN_DISABLED)
3725 continue;
3726
3727 request->channels[i] = chan;
3728 i++;
3729 }
3730 } else {
3731 /* all channels */
3732 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3733 int j;
3734 if (!wiphy->bands[band])
3735 continue;
3736 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3737 struct ieee80211_channel *chan;
3738
3739 chan = &wiphy->bands[band]->channels[j];
3740
3741 if (chan->flags & IEEE80211_CHAN_DISABLED)
3742 continue;
3743
3744 request->channels[i] = chan;
3745 i++;
3746 }
3747 }
3748 }
3749
3750 if (!i) {
3751 err = -EINVAL;
3752 goto out_free;
3753 }
3754
3755 request->n_channels = i;
3756
3757 i = 0;
3758 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3759 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3760 tmp) {
3761 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3762 err = -EINVAL;
3763 goto out_free;
3764 }
3765 request->ssids[i].ssid_len = nla_len(attr);
3766 memcpy(request->ssids[i].ssid, nla_data(attr),
3767 nla_len(attr));
3768 i++;
3769 }
3770 }
3771
3772 if (info->attrs[NL80211_ATTR_IE]) {
3773 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3774 memcpy((void *)request->ie,
3775 nla_data(info->attrs[NL80211_ATTR_IE]),
3776 request->ie_len);
3777 }
3778
3779 request->dev = dev;
3780 request->wiphy = &rdev->wiphy;
3781 request->interval = interval;
3782
3783 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3784 if (!err) {
3785 rdev->sched_scan_req = request;
3786 nl80211_send_sched_scan(rdev, dev,
3787 NL80211_CMD_START_SCHED_SCAN);
3788 goto out;
3789 }
3790
3791 out_free:
3792 kfree(request);
3793 out:
3794 mutex_unlock(&rdev->sched_scan_mtx);
3795 return err;
3796 }
3797
3798 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3799 struct genl_info *info)
3800 {
3801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3802 int err;
3803
3804 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3805 !rdev->ops->sched_scan_stop)
3806 return -EOPNOTSUPP;
3807
3808 mutex_lock(&rdev->sched_scan_mtx);
3809 err = __cfg80211_stop_sched_scan(rdev, false);
3810 mutex_unlock(&rdev->sched_scan_mtx);
3811
3812 return err;
3813 }
3814
3815 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3816 u32 seq, int flags,
3817 struct cfg80211_registered_device *rdev,
3818 struct wireless_dev *wdev,
3819 struct cfg80211_internal_bss *intbss)
3820 {
3821 struct cfg80211_bss *res = &intbss->pub;
3822 void *hdr;
3823 struct nlattr *bss;
3824 int i;
3825
3826 ASSERT_WDEV_LOCK(wdev);
3827
3828 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3829 NL80211_CMD_NEW_SCAN_RESULTS);
3830 if (!hdr)
3831 return -1;
3832
3833 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3834
3835 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3836 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3837
3838 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3839 if (!bss)
3840 goto nla_put_failure;
3841 if (!is_zero_ether_addr(res->bssid))
3842 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3843 if (res->information_elements && res->len_information_elements)
3844 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3845 res->len_information_elements,
3846 res->information_elements);
3847 if (res->beacon_ies && res->len_beacon_ies &&
3848 res->beacon_ies != res->information_elements)
3849 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3850 res->len_beacon_ies, res->beacon_ies);
3851 if (res->tsf)
3852 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3853 if (res->beacon_interval)
3854 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3855 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3856 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3857 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3858 jiffies_to_msecs(jiffies - intbss->ts));
3859
3860 switch (rdev->wiphy.signal_type) {
3861 case CFG80211_SIGNAL_TYPE_MBM:
3862 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3863 break;
3864 case CFG80211_SIGNAL_TYPE_UNSPEC:
3865 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3866 break;
3867 default:
3868 break;
3869 }
3870
3871 switch (wdev->iftype) {
3872 case NL80211_IFTYPE_P2P_CLIENT:
3873 case NL80211_IFTYPE_STATION:
3874 if (intbss == wdev->current_bss)
3875 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3876 NL80211_BSS_STATUS_ASSOCIATED);
3877 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3878 if (intbss != wdev->auth_bsses[i])
3879 continue;
3880 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3881 NL80211_BSS_STATUS_AUTHENTICATED);
3882 break;
3883 }
3884 break;
3885 case NL80211_IFTYPE_ADHOC:
3886 if (intbss == wdev->current_bss)
3887 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3888 NL80211_BSS_STATUS_IBSS_JOINED);
3889 break;
3890 default:
3891 break;
3892 }
3893
3894 nla_nest_end(msg, bss);
3895
3896 return genlmsg_end(msg, hdr);
3897
3898 nla_put_failure:
3899 genlmsg_cancel(msg, hdr);
3900 return -EMSGSIZE;
3901 }
3902
3903 static int nl80211_dump_scan(struct sk_buff *skb,
3904 struct netlink_callback *cb)
3905 {
3906 struct cfg80211_registered_device *rdev;
3907 struct net_device *dev;
3908 struct cfg80211_internal_bss *scan;
3909 struct wireless_dev *wdev;
3910 int start = cb->args[1], idx = 0;
3911 int err;
3912
3913 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3914 if (err)
3915 return err;
3916
3917 wdev = dev->ieee80211_ptr;
3918
3919 wdev_lock(wdev);
3920 spin_lock_bh(&rdev->bss_lock);
3921 cfg80211_bss_expire(rdev);
3922
3923 cb->seq = rdev->bss_generation;
3924
3925 list_for_each_entry(scan, &rdev->bss_list, list) {
3926 if (++idx <= start)
3927 continue;
3928 if (nl80211_send_bss(skb, cb,
3929 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3930 rdev, wdev, scan) < 0) {
3931 idx--;
3932 break;
3933 }
3934 }
3935
3936 spin_unlock_bh(&rdev->bss_lock);
3937 wdev_unlock(wdev);
3938
3939 cb->args[1] = idx;
3940 nl80211_finish_netdev_dump(rdev);
3941
3942 return skb->len;
3943 }
3944
3945 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3946 int flags, struct net_device *dev,
3947 struct survey_info *survey)
3948 {
3949 void *hdr;
3950 struct nlattr *infoattr;
3951
3952 hdr = nl80211hdr_put(msg, pid, seq, flags,
3953 NL80211_CMD_NEW_SURVEY_RESULTS);
3954 if (!hdr)
3955 return -ENOMEM;
3956
3957 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3958
3959 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3960 if (!infoattr)
3961 goto nla_put_failure;
3962
3963 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3964 survey->channel->center_freq);
3965 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3966 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3967 survey->noise);
3968 if (survey->filled & SURVEY_INFO_IN_USE)
3969 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
3970 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3971 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3972 survey->channel_time);
3973 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3974 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3975 survey->channel_time_busy);
3976 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3977 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3978 survey->channel_time_ext_busy);
3979 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3980 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3981 survey->channel_time_rx);
3982 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3983 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3984 survey->channel_time_tx);
3985
3986 nla_nest_end(msg, infoattr);
3987
3988 return genlmsg_end(msg, hdr);
3989
3990 nla_put_failure:
3991 genlmsg_cancel(msg, hdr);
3992 return -EMSGSIZE;
3993 }
3994
3995 static int nl80211_dump_survey(struct sk_buff *skb,
3996 struct netlink_callback *cb)
3997 {
3998 struct survey_info survey;
3999 struct cfg80211_registered_device *dev;
4000 struct net_device *netdev;
4001 int survey_idx = cb->args[1];
4002 int res;
4003
4004 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4005 if (res)
4006 return res;
4007
4008 if (!dev->ops->dump_survey) {
4009 res = -EOPNOTSUPP;
4010 goto out_err;
4011 }
4012
4013 while (1) {
4014 struct ieee80211_channel *chan;
4015
4016 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4017 &survey);
4018 if (res == -ENOENT)
4019 break;
4020 if (res)
4021 goto out_err;
4022
4023 /* Survey without a channel doesn't make sense */
4024 if (!survey.channel) {
4025 res = -EINVAL;
4026 goto out;
4027 }
4028
4029 chan = ieee80211_get_channel(&dev->wiphy,
4030 survey.channel->center_freq);
4031 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4032 survey_idx++;
4033 continue;
4034 }
4035
4036 if (nl80211_send_survey(skb,
4037 NETLINK_CB(cb->skb).pid,
4038 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4039 netdev,
4040 &survey) < 0)
4041 goto out;
4042 survey_idx++;
4043 }
4044
4045 out:
4046 cb->args[1] = survey_idx;
4047 res = skb->len;
4048 out_err:
4049 nl80211_finish_netdev_dump(dev);
4050 return res;
4051 }
4052
4053 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4054 {
4055 return auth_type <= NL80211_AUTHTYPE_MAX;
4056 }
4057
4058 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4059 {
4060 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4061 NL80211_WPA_VERSION_2));
4062 }
4063
4064 static bool nl80211_valid_akm_suite(u32 akm)
4065 {
4066 return akm == WLAN_AKM_SUITE_8021X ||
4067 akm == WLAN_AKM_SUITE_PSK;
4068 }
4069
4070 static bool nl80211_valid_cipher_suite(u32 cipher)
4071 {
4072 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
4073 cipher == WLAN_CIPHER_SUITE_WEP104 ||
4074 cipher == WLAN_CIPHER_SUITE_TKIP ||
4075 cipher == WLAN_CIPHER_SUITE_CCMP ||
4076 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
4077 }
4078
4079
4080 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4081 {
4082 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4083 struct net_device *dev = info->user_ptr[1];
4084 struct ieee80211_channel *chan;
4085 const u8 *bssid, *ssid, *ie = NULL;
4086 int err, ssid_len, ie_len = 0;
4087 enum nl80211_auth_type auth_type;
4088 struct key_parse key;
4089 bool local_state_change;
4090
4091 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4092 return -EINVAL;
4093
4094 if (!info->attrs[NL80211_ATTR_MAC])
4095 return -EINVAL;
4096
4097 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4098 return -EINVAL;
4099
4100 if (!info->attrs[NL80211_ATTR_SSID])
4101 return -EINVAL;
4102
4103 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4104 return -EINVAL;
4105
4106 err = nl80211_parse_key(info, &key);
4107 if (err)
4108 return err;
4109
4110 if (key.idx >= 0) {
4111 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4112 return -EINVAL;
4113 if (!key.p.key || !key.p.key_len)
4114 return -EINVAL;
4115 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4116 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4117 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4118 key.p.key_len != WLAN_KEY_LEN_WEP104))
4119 return -EINVAL;
4120 if (key.idx > 4)
4121 return -EINVAL;
4122 } else {
4123 key.p.key_len = 0;
4124 key.p.key = NULL;
4125 }
4126
4127 if (key.idx >= 0) {
4128 int i;
4129 bool ok = false;
4130 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4131 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4132 ok = true;
4133 break;
4134 }
4135 }
4136 if (!ok)
4137 return -EINVAL;
4138 }
4139
4140 if (!rdev->ops->auth)
4141 return -EOPNOTSUPP;
4142
4143 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4144 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4145 return -EOPNOTSUPP;
4146
4147 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4148 chan = ieee80211_get_channel(&rdev->wiphy,
4149 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4150 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4151 return -EINVAL;
4152
4153 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4154 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4155
4156 if (info->attrs[NL80211_ATTR_IE]) {
4157 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4158 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4159 }
4160
4161 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4162 if (!nl80211_valid_auth_type(auth_type))
4163 return -EINVAL;
4164
4165 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4166
4167 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4168 ssid, ssid_len, ie, ie_len,
4169 key.p.key, key.p.key_len, key.idx,
4170 local_state_change);
4171 }
4172
4173 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4174 struct genl_info *info,
4175 struct cfg80211_crypto_settings *settings,
4176 int cipher_limit)
4177 {
4178 memset(settings, 0, sizeof(*settings));
4179
4180 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4181
4182 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4183 u16 proto;
4184 proto = nla_get_u16(
4185 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4186 settings->control_port_ethertype = cpu_to_be16(proto);
4187 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4188 proto != ETH_P_PAE)
4189 return -EINVAL;
4190 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4191 settings->control_port_no_encrypt = true;
4192 } else
4193 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4194
4195 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4196 void *data;
4197 int len, i;
4198
4199 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4200 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4201 settings->n_ciphers_pairwise = len / sizeof(u32);
4202
4203 if (len % sizeof(u32))
4204 return -EINVAL;
4205
4206 if (settings->n_ciphers_pairwise > cipher_limit)
4207 return -EINVAL;
4208
4209 memcpy(settings->ciphers_pairwise, data, len);
4210
4211 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4212 if (!nl80211_valid_cipher_suite(
4213 settings->ciphers_pairwise[i]))
4214 return -EINVAL;
4215 }
4216
4217 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4218 settings->cipher_group =
4219 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4220 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4221 return -EINVAL;
4222 }
4223
4224 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4225 settings->wpa_versions =
4226 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4227 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4228 return -EINVAL;
4229 }
4230
4231 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4232 void *data;
4233 int len, i;
4234
4235 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4236 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4237 settings->n_akm_suites = len / sizeof(u32);
4238
4239 if (len % sizeof(u32))
4240 return -EINVAL;
4241
4242 memcpy(settings->akm_suites, data, len);
4243
4244 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4245 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4246 return -EINVAL;
4247 }
4248
4249 return 0;
4250 }
4251
4252 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4253 {
4254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4255 struct net_device *dev = info->user_ptr[1];
4256 struct cfg80211_crypto_settings crypto;
4257 struct ieee80211_channel *chan;
4258 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4259 int err, ssid_len, ie_len = 0;
4260 bool use_mfp = false;
4261
4262 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4263 return -EINVAL;
4264
4265 if (!info->attrs[NL80211_ATTR_MAC] ||
4266 !info->attrs[NL80211_ATTR_SSID] ||
4267 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4268 return -EINVAL;
4269
4270 if (!rdev->ops->assoc)
4271 return -EOPNOTSUPP;
4272
4273 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4274 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4275 return -EOPNOTSUPP;
4276
4277 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4278
4279 chan = ieee80211_get_channel(&rdev->wiphy,
4280 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4281 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4282 return -EINVAL;
4283
4284 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4285 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4286
4287 if (info->attrs[NL80211_ATTR_IE]) {
4288 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4289 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4290 }
4291
4292 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4293 enum nl80211_mfp mfp =
4294 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4295 if (mfp == NL80211_MFP_REQUIRED)
4296 use_mfp = true;
4297 else if (mfp != NL80211_MFP_NO)
4298 return -EINVAL;
4299 }
4300
4301 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4302 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4303
4304 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4305 if (!err)
4306 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4307 ssid, ssid_len, ie, ie_len, use_mfp,
4308 &crypto);
4309
4310 return err;
4311 }
4312
4313 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4314 {
4315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4316 struct net_device *dev = info->user_ptr[1];
4317 const u8 *ie = NULL, *bssid;
4318 int ie_len = 0;
4319 u16 reason_code;
4320 bool local_state_change;
4321
4322 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4323 return -EINVAL;
4324
4325 if (!info->attrs[NL80211_ATTR_MAC])
4326 return -EINVAL;
4327
4328 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4329 return -EINVAL;
4330
4331 if (!rdev->ops->deauth)
4332 return -EOPNOTSUPP;
4333
4334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4335 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4336 return -EOPNOTSUPP;
4337
4338 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4339
4340 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4341 if (reason_code == 0) {
4342 /* Reason Code 0 is reserved */
4343 return -EINVAL;
4344 }
4345
4346 if (info->attrs[NL80211_ATTR_IE]) {
4347 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4348 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4349 }
4350
4351 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4352
4353 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4354 local_state_change);
4355 }
4356
4357 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4358 {
4359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4360 struct net_device *dev = info->user_ptr[1];
4361 const u8 *ie = NULL, *bssid;
4362 int ie_len = 0;
4363 u16 reason_code;
4364 bool local_state_change;
4365
4366 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4367 return -EINVAL;
4368
4369 if (!info->attrs[NL80211_ATTR_MAC])
4370 return -EINVAL;
4371
4372 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4373 return -EINVAL;
4374
4375 if (!rdev->ops->disassoc)
4376 return -EOPNOTSUPP;
4377
4378 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4379 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4380 return -EOPNOTSUPP;
4381
4382 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4383
4384 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4385 if (reason_code == 0) {
4386 /* Reason Code 0 is reserved */
4387 return -EINVAL;
4388 }
4389
4390 if (info->attrs[NL80211_ATTR_IE]) {
4391 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4392 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4393 }
4394
4395 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4396
4397 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4398 local_state_change);
4399 }
4400
4401 static bool
4402 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4403 int mcast_rate[IEEE80211_NUM_BANDS],
4404 int rateval)
4405 {
4406 struct wiphy *wiphy = &rdev->wiphy;
4407 bool found = false;
4408 int band, i;
4409
4410 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4411 struct ieee80211_supported_band *sband;
4412
4413 sband = wiphy->bands[band];
4414 if (!sband)
4415 continue;
4416
4417 for (i = 0; i < sband->n_bitrates; i++) {
4418 if (sband->bitrates[i].bitrate == rateval) {
4419 mcast_rate[band] = i + 1;
4420 found = true;
4421 break;
4422 }
4423 }
4424 }
4425
4426 return found;
4427 }
4428
4429 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4430 {
4431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4432 struct net_device *dev = info->user_ptr[1];
4433 struct cfg80211_ibss_params ibss;
4434 struct wiphy *wiphy;
4435 struct cfg80211_cached_keys *connkeys = NULL;
4436 int err;
4437
4438 memset(&ibss, 0, sizeof(ibss));
4439
4440 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4441 return -EINVAL;
4442
4443 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4444 !info->attrs[NL80211_ATTR_SSID] ||
4445 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4446 return -EINVAL;
4447
4448 ibss.beacon_interval = 100;
4449
4450 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4451 ibss.beacon_interval =
4452 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4453 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4454 return -EINVAL;
4455 }
4456
4457 if (!rdev->ops->join_ibss)
4458 return -EOPNOTSUPP;
4459
4460 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4461 return -EOPNOTSUPP;
4462
4463 wiphy = &rdev->wiphy;
4464
4465 if (info->attrs[NL80211_ATTR_MAC])
4466 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4467 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4468 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4469
4470 if (info->attrs[NL80211_ATTR_IE]) {
4471 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4472 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4473 }
4474
4475 ibss.channel = ieee80211_get_channel(wiphy,
4476 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4477 if (!ibss.channel ||
4478 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4479 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4480 return -EINVAL;
4481
4482 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4483 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4484
4485 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4486 u8 *rates =
4487 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4488 int n_rates =
4489 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4490 struct ieee80211_supported_band *sband =
4491 wiphy->bands[ibss.channel->band];
4492 int err;
4493
4494 err = ieee80211_get_ratemask(sband, rates, n_rates,
4495 &ibss.basic_rates);
4496 if (err)
4497 return err;
4498 }
4499
4500 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4501 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4502 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4503 return -EINVAL;
4504
4505 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4506 connkeys = nl80211_parse_connkeys(rdev,
4507 info->attrs[NL80211_ATTR_KEYS]);
4508 if (IS_ERR(connkeys))
4509 return PTR_ERR(connkeys);
4510 }
4511
4512 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4513 if (err)
4514 kfree(connkeys);
4515 return err;
4516 }
4517
4518 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4519 {
4520 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4521 struct net_device *dev = info->user_ptr[1];
4522
4523 if (!rdev->ops->leave_ibss)
4524 return -EOPNOTSUPP;
4525
4526 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4527 return -EOPNOTSUPP;
4528
4529 return cfg80211_leave_ibss(rdev, dev, false);
4530 }
4531
4532 #ifdef CONFIG_NL80211_TESTMODE
4533 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4534 .name = "testmode",
4535 };
4536
4537 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4538 {
4539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4540 int err;
4541
4542 if (!info->attrs[NL80211_ATTR_TESTDATA])
4543 return -EINVAL;
4544
4545 err = -EOPNOTSUPP;
4546 if (rdev->ops->testmode_cmd) {
4547 rdev->testmode_info = info;
4548 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4549 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4550 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4551 rdev->testmode_info = NULL;
4552 }
4553
4554 return err;
4555 }
4556
4557 static int nl80211_testmode_dump(struct sk_buff *skb,
4558 struct netlink_callback *cb)
4559 {
4560 struct cfg80211_registered_device *dev;
4561 int err;
4562 long phy_idx;
4563 void *data = NULL;
4564 int data_len = 0;
4565
4566 if (cb->args[0]) {
4567 /*
4568 * 0 is a valid index, but not valid for args[0],
4569 * so we need to offset by 1.
4570 */
4571 phy_idx = cb->args[0] - 1;
4572 } else {
4573 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4574 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4575 nl80211_policy);
4576 if (err)
4577 return err;
4578 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4579 return -EINVAL;
4580 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4581 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4582 cb->args[1] =
4583 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4584 }
4585
4586 if (cb->args[1]) {
4587 data = nla_data((void *)cb->args[1]);
4588 data_len = nla_len((void *)cb->args[1]);
4589 }
4590
4591 mutex_lock(&cfg80211_mutex);
4592 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4593 if (!dev) {
4594 mutex_unlock(&cfg80211_mutex);
4595 return -ENOENT;
4596 }
4597 cfg80211_lock_rdev(dev);
4598 mutex_unlock(&cfg80211_mutex);
4599
4600 if (!dev->ops->testmode_dump) {
4601 err = -EOPNOTSUPP;
4602 goto out_err;
4603 }
4604
4605 while (1) {
4606 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4607 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4608 NL80211_CMD_TESTMODE);
4609 struct nlattr *tmdata;
4610
4611 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4612 genlmsg_cancel(skb, hdr);
4613 break;
4614 }
4615
4616 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4617 if (!tmdata) {
4618 genlmsg_cancel(skb, hdr);
4619 break;
4620 }
4621 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4622 data, data_len);
4623 nla_nest_end(skb, tmdata);
4624
4625 if (err == -ENOBUFS || err == -ENOENT) {
4626 genlmsg_cancel(skb, hdr);
4627 break;
4628 } else if (err) {
4629 genlmsg_cancel(skb, hdr);
4630 goto out_err;
4631 }
4632
4633 genlmsg_end(skb, hdr);
4634 }
4635
4636 err = skb->len;
4637 /* see above */
4638 cb->args[0] = phy_idx + 1;
4639 out_err:
4640 cfg80211_unlock_rdev(dev);
4641 return err;
4642 }
4643
4644 static struct sk_buff *
4645 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4646 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4647 {
4648 struct sk_buff *skb;
4649 void *hdr;
4650 struct nlattr *data;
4651
4652 skb = nlmsg_new(approxlen + 100, gfp);
4653 if (!skb)
4654 return NULL;
4655
4656 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4657 if (!hdr) {
4658 kfree_skb(skb);
4659 return NULL;
4660 }
4661
4662 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4663 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4664
4665 ((void **)skb->cb)[0] = rdev;
4666 ((void **)skb->cb)[1] = hdr;
4667 ((void **)skb->cb)[2] = data;
4668
4669 return skb;
4670
4671 nla_put_failure:
4672 kfree_skb(skb);
4673 return NULL;
4674 }
4675
4676 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4677 int approxlen)
4678 {
4679 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4680
4681 if (WARN_ON(!rdev->testmode_info))
4682 return NULL;
4683
4684 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4685 rdev->testmode_info->snd_pid,
4686 rdev->testmode_info->snd_seq,
4687 GFP_KERNEL);
4688 }
4689 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4690
4691 int cfg80211_testmode_reply(struct sk_buff *skb)
4692 {
4693 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4694 void *hdr = ((void **)skb->cb)[1];
4695 struct nlattr *data = ((void **)skb->cb)[2];
4696
4697 if (WARN_ON(!rdev->testmode_info)) {
4698 kfree_skb(skb);
4699 return -EINVAL;
4700 }
4701
4702 nla_nest_end(skb, data);
4703 genlmsg_end(skb, hdr);
4704 return genlmsg_reply(skb, rdev->testmode_info);
4705 }
4706 EXPORT_SYMBOL(cfg80211_testmode_reply);
4707
4708 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4709 int approxlen, gfp_t gfp)
4710 {
4711 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4712
4713 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4714 }
4715 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4716
4717 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4718 {
4719 void *hdr = ((void **)skb->cb)[1];
4720 struct nlattr *data = ((void **)skb->cb)[2];
4721
4722 nla_nest_end(skb, data);
4723 genlmsg_end(skb, hdr);
4724 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4725 }
4726 EXPORT_SYMBOL(cfg80211_testmode_event);
4727 #endif
4728
4729 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4730 {
4731 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4732 struct net_device *dev = info->user_ptr[1];
4733 struct cfg80211_connect_params connect;
4734 struct wiphy *wiphy;
4735 struct cfg80211_cached_keys *connkeys = NULL;
4736 int err;
4737
4738 memset(&connect, 0, sizeof(connect));
4739
4740 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4741 return -EINVAL;
4742
4743 if (!info->attrs[NL80211_ATTR_SSID] ||
4744 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4745 return -EINVAL;
4746
4747 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4748 connect.auth_type =
4749 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4750 if (!nl80211_valid_auth_type(connect.auth_type))
4751 return -EINVAL;
4752 } else
4753 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4754
4755 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4756
4757 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4758 NL80211_MAX_NR_CIPHER_SUITES);
4759 if (err)
4760 return err;
4761
4762 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4763 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4764 return -EOPNOTSUPP;
4765
4766 wiphy = &rdev->wiphy;
4767
4768 if (info->attrs[NL80211_ATTR_MAC])
4769 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4770 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4771 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4772
4773 if (info->attrs[NL80211_ATTR_IE]) {
4774 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4775 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4776 }
4777
4778 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4779 connect.channel =
4780 ieee80211_get_channel(wiphy,
4781 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4782 if (!connect.channel ||
4783 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4784 return -EINVAL;
4785 }
4786
4787 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4788 connkeys = nl80211_parse_connkeys(rdev,
4789 info->attrs[NL80211_ATTR_KEYS]);
4790 if (IS_ERR(connkeys))
4791 return PTR_ERR(connkeys);
4792 }
4793
4794 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4795 if (err)
4796 kfree(connkeys);
4797 return err;
4798 }
4799
4800 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4801 {
4802 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4803 struct net_device *dev = info->user_ptr[1];
4804 u16 reason;
4805
4806 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4807 reason = WLAN_REASON_DEAUTH_LEAVING;
4808 else
4809 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4810
4811 if (reason == 0)
4812 return -EINVAL;
4813
4814 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4815 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4816 return -EOPNOTSUPP;
4817
4818 return cfg80211_disconnect(rdev, dev, reason, true);
4819 }
4820
4821 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4822 {
4823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4824 struct net *net;
4825 int err;
4826 u32 pid;
4827
4828 if (!info->attrs[NL80211_ATTR_PID])
4829 return -EINVAL;
4830
4831 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4832
4833 net = get_net_ns_by_pid(pid);
4834 if (IS_ERR(net))
4835 return PTR_ERR(net);
4836
4837 err = 0;
4838
4839 /* check if anything to do */
4840 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4841 err = cfg80211_switch_netns(rdev, net);
4842
4843 put_net(net);
4844 return err;
4845 }
4846
4847 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4848 {
4849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4850 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4851 struct cfg80211_pmksa *pmksa) = NULL;
4852 struct net_device *dev = info->user_ptr[1];
4853 struct cfg80211_pmksa pmksa;
4854
4855 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4856
4857 if (!info->attrs[NL80211_ATTR_MAC])
4858 return -EINVAL;
4859
4860 if (!info->attrs[NL80211_ATTR_PMKID])
4861 return -EINVAL;
4862
4863 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4864 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4865
4866 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4867 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4868 return -EOPNOTSUPP;
4869
4870 switch (info->genlhdr->cmd) {
4871 case NL80211_CMD_SET_PMKSA:
4872 rdev_ops = rdev->ops->set_pmksa;
4873 break;
4874 case NL80211_CMD_DEL_PMKSA:
4875 rdev_ops = rdev->ops->del_pmksa;
4876 break;
4877 default:
4878 WARN_ON(1);
4879 break;
4880 }
4881
4882 if (!rdev_ops)
4883 return -EOPNOTSUPP;
4884
4885 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4886 }
4887
4888 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4889 {
4890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4891 struct net_device *dev = info->user_ptr[1];
4892
4893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4894 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4895 return -EOPNOTSUPP;
4896
4897 if (!rdev->ops->flush_pmksa)
4898 return -EOPNOTSUPP;
4899
4900 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4901 }
4902
4903 static int nl80211_remain_on_channel(struct sk_buff *skb,
4904 struct genl_info *info)
4905 {
4906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4907 struct net_device *dev = info->user_ptr[1];
4908 struct ieee80211_channel *chan;
4909 struct sk_buff *msg;
4910 void *hdr;
4911 u64 cookie;
4912 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4913 u32 freq, duration;
4914 int err;
4915
4916 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4917 !info->attrs[NL80211_ATTR_DURATION])
4918 return -EINVAL;
4919
4920 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4921
4922 /*
4923 * We should be on that channel for at least one jiffie,
4924 * and more than 5 seconds seems excessive.
4925 */
4926 if (!duration || !msecs_to_jiffies(duration) ||
4927 duration > rdev->wiphy.max_remain_on_channel_duration)
4928 return -EINVAL;
4929
4930 if (!rdev->ops->remain_on_channel)
4931 return -EOPNOTSUPP;
4932
4933 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4934 channel_type = nla_get_u32(
4935 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4936 if (channel_type != NL80211_CHAN_NO_HT &&
4937 channel_type != NL80211_CHAN_HT20 &&
4938 channel_type != NL80211_CHAN_HT40PLUS &&
4939 channel_type != NL80211_CHAN_HT40MINUS)
4940 return -EINVAL;
4941 }
4942
4943 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4944 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4945 if (chan == NULL)
4946 return -EINVAL;
4947
4948 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4949 if (!msg)
4950 return -ENOMEM;
4951
4952 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4953 NL80211_CMD_REMAIN_ON_CHANNEL);
4954
4955 if (IS_ERR(hdr)) {
4956 err = PTR_ERR(hdr);
4957 goto free_msg;
4958 }
4959
4960 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4961 channel_type, duration, &cookie);
4962
4963 if (err)
4964 goto free_msg;
4965
4966 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4967
4968 genlmsg_end(msg, hdr);
4969
4970 return genlmsg_reply(msg, info);
4971
4972 nla_put_failure:
4973 err = -ENOBUFS;
4974 free_msg:
4975 nlmsg_free(msg);
4976 return err;
4977 }
4978
4979 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4980 struct genl_info *info)
4981 {
4982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4983 struct net_device *dev = info->user_ptr[1];
4984 u64 cookie;
4985
4986 if (!info->attrs[NL80211_ATTR_COOKIE])
4987 return -EINVAL;
4988
4989 if (!rdev->ops->cancel_remain_on_channel)
4990 return -EOPNOTSUPP;
4991
4992 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4993
4994 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
4995 }
4996
4997 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4998 u8 *rates, u8 rates_len)
4999 {
5000 u8 i;
5001 u32 mask = 0;
5002
5003 for (i = 0; i < rates_len; i++) {
5004 int rate = (rates[i] & 0x7f) * 5;
5005 int ridx;
5006 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5007 struct ieee80211_rate *srate =
5008 &sband->bitrates[ridx];
5009 if (rate == srate->bitrate) {
5010 mask |= 1 << ridx;
5011 break;
5012 }
5013 }
5014 if (ridx == sband->n_bitrates)
5015 return 0; /* rate not found */
5016 }
5017
5018 return mask;
5019 }
5020
5021 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5022 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5023 .len = NL80211_MAX_SUPP_RATES },
5024 };
5025
5026 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5027 struct genl_info *info)
5028 {
5029 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5031 struct cfg80211_bitrate_mask mask;
5032 int rem, i;
5033 struct net_device *dev = info->user_ptr[1];
5034 struct nlattr *tx_rates;
5035 struct ieee80211_supported_band *sband;
5036
5037 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5038 return -EINVAL;
5039
5040 if (!rdev->ops->set_bitrate_mask)
5041 return -EOPNOTSUPP;
5042
5043 memset(&mask, 0, sizeof(mask));
5044 /* Default to all rates enabled */
5045 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5046 sband = rdev->wiphy.bands[i];
5047 mask.control[i].legacy =
5048 sband ? (1 << sband->n_bitrates) - 1 : 0;
5049 }
5050
5051 /*
5052 * The nested attribute uses enum nl80211_band as the index. This maps
5053 * directly to the enum ieee80211_band values used in cfg80211.
5054 */
5055 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5056 {
5057 enum ieee80211_band band = nla_type(tx_rates);
5058 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5059 return -EINVAL;
5060 sband = rdev->wiphy.bands[band];
5061 if (sband == NULL)
5062 return -EINVAL;
5063 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5064 nla_len(tx_rates), nl80211_txattr_policy);
5065 if (tb[NL80211_TXRATE_LEGACY]) {
5066 mask.control[band].legacy = rateset_to_mask(
5067 sband,
5068 nla_data(tb[NL80211_TXRATE_LEGACY]),
5069 nla_len(tb[NL80211_TXRATE_LEGACY]));
5070 if (mask.control[band].legacy == 0)
5071 return -EINVAL;
5072 }
5073 }
5074
5075 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5076 }
5077
5078 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5079 {
5080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5081 struct net_device *dev = info->user_ptr[1];
5082 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5083
5084 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5085 return -EINVAL;
5086
5087 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5088 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5089
5090 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5091 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5092 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5093 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5094 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5095 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5096 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5097 return -EOPNOTSUPP;
5098
5099 /* not much point in registering if we can't reply */
5100 if (!rdev->ops->mgmt_tx)
5101 return -EOPNOTSUPP;
5102
5103 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5104 frame_type,
5105 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5106 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5107 }
5108
5109 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5110 {
5111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5112 struct net_device *dev = info->user_ptr[1];
5113 struct ieee80211_channel *chan;
5114 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5115 bool channel_type_valid = false;
5116 u32 freq;
5117 int err;
5118 void *hdr;
5119 u64 cookie;
5120 struct sk_buff *msg;
5121 unsigned int wait = 0;
5122 bool offchan;
5123
5124 if (!info->attrs[NL80211_ATTR_FRAME] ||
5125 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5126 return -EINVAL;
5127
5128 if (!rdev->ops->mgmt_tx)
5129 return -EOPNOTSUPP;
5130
5131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5132 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5133 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5134 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5135 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5136 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5137 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5138 return -EOPNOTSUPP;
5139
5140 if (info->attrs[NL80211_ATTR_DURATION]) {
5141 if (!rdev->ops->mgmt_tx_cancel_wait)
5142 return -EINVAL;
5143 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5144 }
5145
5146 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5147 channel_type = nla_get_u32(
5148 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5149 if (channel_type != NL80211_CHAN_NO_HT &&
5150 channel_type != NL80211_CHAN_HT20 &&
5151 channel_type != NL80211_CHAN_HT40PLUS &&
5152 channel_type != NL80211_CHAN_HT40MINUS)
5153 return -EINVAL;
5154 channel_type_valid = true;
5155 }
5156
5157 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5158
5159 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5160 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5161 if (chan == NULL)
5162 return -EINVAL;
5163
5164 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5165 if (!msg)
5166 return -ENOMEM;
5167
5168 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5169 NL80211_CMD_FRAME);
5170
5171 if (IS_ERR(hdr)) {
5172 err = PTR_ERR(hdr);
5173 goto free_msg;
5174 }
5175 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5176 channel_type_valid, wait,
5177 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5178 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5179 &cookie);
5180 if (err)
5181 goto free_msg;
5182
5183 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5184
5185 genlmsg_end(msg, hdr);
5186 return genlmsg_reply(msg, info);
5187
5188 nla_put_failure:
5189 err = -ENOBUFS;
5190 free_msg:
5191 nlmsg_free(msg);
5192 return err;
5193 }
5194
5195 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5196 {
5197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5198 struct net_device *dev = info->user_ptr[1];
5199 u64 cookie;
5200
5201 if (!info->attrs[NL80211_ATTR_COOKIE])
5202 return -EINVAL;
5203
5204 if (!rdev->ops->mgmt_tx_cancel_wait)
5205 return -EOPNOTSUPP;
5206
5207 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5208 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5209 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5210 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5211 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5212 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5213 return -EOPNOTSUPP;
5214
5215 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5216
5217 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5218 }
5219
5220 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5221 {
5222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5223 struct wireless_dev *wdev;
5224 struct net_device *dev = info->user_ptr[1];
5225 u8 ps_state;
5226 bool state;
5227 int err;
5228
5229 if (!info->attrs[NL80211_ATTR_PS_STATE])
5230 return -EINVAL;
5231
5232 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5233
5234 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5235 return -EINVAL;
5236
5237 wdev = dev->ieee80211_ptr;
5238
5239 if (!rdev->ops->set_power_mgmt)
5240 return -EOPNOTSUPP;
5241
5242 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5243
5244 if (state == wdev->ps)
5245 return 0;
5246
5247 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5248 wdev->ps_timeout);
5249 if (!err)
5250 wdev->ps = state;
5251 return err;
5252 }
5253
5254 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5255 {
5256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5257 enum nl80211_ps_state ps_state;
5258 struct wireless_dev *wdev;
5259 struct net_device *dev = info->user_ptr[1];
5260 struct sk_buff *msg;
5261 void *hdr;
5262 int err;
5263
5264 wdev = dev->ieee80211_ptr;
5265
5266 if (!rdev->ops->set_power_mgmt)
5267 return -EOPNOTSUPP;
5268
5269 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5270 if (!msg)
5271 return -ENOMEM;
5272
5273 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5274 NL80211_CMD_GET_POWER_SAVE);
5275 if (!hdr) {
5276 err = -ENOBUFS;
5277 goto free_msg;
5278 }
5279
5280 if (wdev->ps)
5281 ps_state = NL80211_PS_ENABLED;
5282 else
5283 ps_state = NL80211_PS_DISABLED;
5284
5285 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5286
5287 genlmsg_end(msg, hdr);
5288 return genlmsg_reply(msg, info);
5289
5290 nla_put_failure:
5291 err = -ENOBUFS;
5292 free_msg:
5293 nlmsg_free(msg);
5294 return err;
5295 }
5296
5297 static struct nla_policy
5298 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5299 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5300 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5301 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5302 };
5303
5304 static int nl80211_set_cqm_rssi(struct genl_info *info,
5305 s32 threshold, u32 hysteresis)
5306 {
5307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5308 struct wireless_dev *wdev;
5309 struct net_device *dev = info->user_ptr[1];
5310
5311 if (threshold > 0)
5312 return -EINVAL;
5313
5314 wdev = dev->ieee80211_ptr;
5315
5316 if (!rdev->ops->set_cqm_rssi_config)
5317 return -EOPNOTSUPP;
5318
5319 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5320 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5321 return -EOPNOTSUPP;
5322
5323 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5324 threshold, hysteresis);
5325 }
5326
5327 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5328 {
5329 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5330 struct nlattr *cqm;
5331 int err;
5332
5333 cqm = info->attrs[NL80211_ATTR_CQM];
5334 if (!cqm) {
5335 err = -EINVAL;
5336 goto out;
5337 }
5338
5339 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5340 nl80211_attr_cqm_policy);
5341 if (err)
5342 goto out;
5343
5344 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5345 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5346 s32 threshold;
5347 u32 hysteresis;
5348 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5349 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5350 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5351 } else
5352 err = -EINVAL;
5353
5354 out:
5355 return err;
5356 }
5357
5358 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5359 {
5360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5361 struct net_device *dev = info->user_ptr[1];
5362 struct mesh_config cfg;
5363 struct mesh_setup setup;
5364 int err;
5365
5366 /* start with default */
5367 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5368 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5369
5370 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5371 /* and parse parameters if given */
5372 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5373 if (err)
5374 return err;
5375 }
5376
5377 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5378 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5379 return -EINVAL;
5380
5381 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5382 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5383
5384 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5385 /* parse additional setup parameters if given */
5386 err = nl80211_parse_mesh_setup(info, &setup);
5387 if (err)
5388 return err;
5389 }
5390
5391 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5392 }
5393
5394 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5395 {
5396 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5397 struct net_device *dev = info->user_ptr[1];
5398
5399 return cfg80211_leave_mesh(rdev, dev);
5400 }
5401
5402 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5403 {
5404 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5405 struct sk_buff *msg;
5406 void *hdr;
5407
5408 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5409 return -EOPNOTSUPP;
5410
5411 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5412 if (!msg)
5413 return -ENOMEM;
5414
5415 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5416 NL80211_CMD_GET_WOWLAN);
5417 if (!hdr)
5418 goto nla_put_failure;
5419
5420 if (rdev->wowlan) {
5421 struct nlattr *nl_wowlan;
5422
5423 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5424 if (!nl_wowlan)
5425 goto nla_put_failure;
5426
5427 if (rdev->wowlan->any)
5428 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5429 if (rdev->wowlan->disconnect)
5430 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5431 if (rdev->wowlan->magic_pkt)
5432 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5433 if (rdev->wowlan->gtk_rekey_failure)
5434 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5435 if (rdev->wowlan->eap_identity_req)
5436 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5437 if (rdev->wowlan->four_way_handshake)
5438 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5439 if (rdev->wowlan->rfkill_release)
5440 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5441 if (rdev->wowlan->n_patterns) {
5442 struct nlattr *nl_pats, *nl_pat;
5443 int i, pat_len;
5444
5445 nl_pats = nla_nest_start(msg,
5446 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5447 if (!nl_pats)
5448 goto nla_put_failure;
5449
5450 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5451 nl_pat = nla_nest_start(msg, i + 1);
5452 if (!nl_pat)
5453 goto nla_put_failure;
5454 pat_len = rdev->wowlan->patterns[i].pattern_len;
5455 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5456 DIV_ROUND_UP(pat_len, 8),
5457 rdev->wowlan->patterns[i].mask);
5458 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5459 pat_len,
5460 rdev->wowlan->patterns[i].pattern);
5461 nla_nest_end(msg, nl_pat);
5462 }
5463 nla_nest_end(msg, nl_pats);
5464 }
5465
5466 nla_nest_end(msg, nl_wowlan);
5467 }
5468
5469 genlmsg_end(msg, hdr);
5470 return genlmsg_reply(msg, info);
5471
5472 nla_put_failure:
5473 nlmsg_free(msg);
5474 return -ENOBUFS;
5475 }
5476
5477 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5478 {
5479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5480 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5481 struct cfg80211_wowlan no_triggers = {};
5482 struct cfg80211_wowlan new_triggers = {};
5483 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5484 int err, i;
5485
5486 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5487 return -EOPNOTSUPP;
5488
5489 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5490 goto no_triggers;
5491
5492 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5493 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5494 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5495 nl80211_wowlan_policy);
5496 if (err)
5497 return err;
5498
5499 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5500 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5501 return -EINVAL;
5502 new_triggers.any = true;
5503 }
5504
5505 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5506 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5507 return -EINVAL;
5508 new_triggers.disconnect = true;
5509 }
5510
5511 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5512 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5513 return -EINVAL;
5514 new_triggers.magic_pkt = true;
5515 }
5516
5517 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5518 return -EINVAL;
5519
5520 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5521 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5522 return -EINVAL;
5523 new_triggers.gtk_rekey_failure = true;
5524 }
5525
5526 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5527 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5528 return -EINVAL;
5529 new_triggers.eap_identity_req = true;
5530 }
5531
5532 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5533 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5534 return -EINVAL;
5535 new_triggers.four_way_handshake = true;
5536 }
5537
5538 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5539 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5540 return -EINVAL;
5541 new_triggers.rfkill_release = true;
5542 }
5543
5544 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5545 struct nlattr *pat;
5546 int n_patterns = 0;
5547 int rem, pat_len, mask_len;
5548 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5549
5550 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5551 rem)
5552 n_patterns++;
5553 if (n_patterns > wowlan->n_patterns)
5554 return -EINVAL;
5555
5556 new_triggers.patterns = kcalloc(n_patterns,
5557 sizeof(new_triggers.patterns[0]),
5558 GFP_KERNEL);
5559 if (!new_triggers.patterns)
5560 return -ENOMEM;
5561
5562 new_triggers.n_patterns = n_patterns;
5563 i = 0;
5564
5565 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5566 rem) {
5567 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5568 nla_data(pat), nla_len(pat), NULL);
5569 err = -EINVAL;
5570 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5571 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5572 goto error;
5573 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5574 mask_len = DIV_ROUND_UP(pat_len, 8);
5575 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5576 mask_len)
5577 goto error;
5578 if (pat_len > wowlan->pattern_max_len ||
5579 pat_len < wowlan->pattern_min_len)
5580 goto error;
5581
5582 new_triggers.patterns[i].mask =
5583 kmalloc(mask_len + pat_len, GFP_KERNEL);
5584 if (!new_triggers.patterns[i].mask) {
5585 err = -ENOMEM;
5586 goto error;
5587 }
5588 new_triggers.patterns[i].pattern =
5589 new_triggers.patterns[i].mask + mask_len;
5590 memcpy(new_triggers.patterns[i].mask,
5591 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5592 mask_len);
5593 new_triggers.patterns[i].pattern_len = pat_len;
5594 memcpy(new_triggers.patterns[i].pattern,
5595 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5596 pat_len);
5597 i++;
5598 }
5599 }
5600
5601 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5602 struct cfg80211_wowlan *ntrig;
5603 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5604 GFP_KERNEL);
5605 if (!ntrig) {
5606 err = -ENOMEM;
5607 goto error;
5608 }
5609 cfg80211_rdev_free_wowlan(rdev);
5610 rdev->wowlan = ntrig;
5611 } else {
5612 no_triggers:
5613 cfg80211_rdev_free_wowlan(rdev);
5614 rdev->wowlan = NULL;
5615 }
5616
5617 return 0;
5618 error:
5619 for (i = 0; i < new_triggers.n_patterns; i++)
5620 kfree(new_triggers.patterns[i].mask);
5621 kfree(new_triggers.patterns);
5622 return err;
5623 }
5624
5625 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5626 {
5627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5628 struct net_device *dev = info->user_ptr[1];
5629 struct wireless_dev *wdev = dev->ieee80211_ptr;
5630 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5631 struct cfg80211_gtk_rekey_data rekey_data;
5632 int err;
5633
5634 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5635 return -EINVAL;
5636
5637 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5638 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5639 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5640 nl80211_rekey_policy);
5641 if (err)
5642 return err;
5643
5644 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5645 return -ERANGE;
5646 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5647 return -ERANGE;
5648 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5649 return -ERANGE;
5650
5651 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5652 NL80211_KEK_LEN);
5653 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5654 NL80211_KCK_LEN);
5655 memcpy(rekey_data.replay_ctr,
5656 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5657 NL80211_REPLAY_CTR_LEN);
5658
5659 wdev_lock(wdev);
5660 if (!wdev->current_bss) {
5661 err = -ENOTCONN;
5662 goto out;
5663 }
5664
5665 if (!rdev->ops->set_rekey_data) {
5666 err = -EOPNOTSUPP;
5667 goto out;
5668 }
5669
5670 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5671 out:
5672 wdev_unlock(wdev);
5673 return err;
5674 }
5675
5676 #define NL80211_FLAG_NEED_WIPHY 0x01
5677 #define NL80211_FLAG_NEED_NETDEV 0x02
5678 #define NL80211_FLAG_NEED_RTNL 0x04
5679 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5680 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5681 NL80211_FLAG_CHECK_NETDEV_UP)
5682
5683 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5684 struct genl_info *info)
5685 {
5686 struct cfg80211_registered_device *rdev;
5687 struct net_device *dev;
5688 int err;
5689 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5690
5691 if (rtnl)
5692 rtnl_lock();
5693
5694 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5695 rdev = cfg80211_get_dev_from_info(info);
5696 if (IS_ERR(rdev)) {
5697 if (rtnl)
5698 rtnl_unlock();
5699 return PTR_ERR(rdev);
5700 }
5701 info->user_ptr[0] = rdev;
5702 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5703 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5704 if (err) {
5705 if (rtnl)
5706 rtnl_unlock();
5707 return err;
5708 }
5709 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5710 !netif_running(dev)) {
5711 cfg80211_unlock_rdev(rdev);
5712 dev_put(dev);
5713 if (rtnl)
5714 rtnl_unlock();
5715 return -ENETDOWN;
5716 }
5717 info->user_ptr[0] = rdev;
5718 info->user_ptr[1] = dev;
5719 }
5720
5721 return 0;
5722 }
5723
5724 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5725 struct genl_info *info)
5726 {
5727 if (info->user_ptr[0])
5728 cfg80211_unlock_rdev(info->user_ptr[0]);
5729 if (info->user_ptr[1])
5730 dev_put(info->user_ptr[1]);
5731 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5732 rtnl_unlock();
5733 }
5734
5735 static struct genl_ops nl80211_ops[] = {
5736 {
5737 .cmd = NL80211_CMD_GET_WIPHY,
5738 .doit = nl80211_get_wiphy,
5739 .dumpit = nl80211_dump_wiphy,
5740 .policy = nl80211_policy,
5741 /* can be retrieved by unprivileged users */
5742 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5743 },
5744 {
5745 .cmd = NL80211_CMD_SET_WIPHY,
5746 .doit = nl80211_set_wiphy,
5747 .policy = nl80211_policy,
5748 .flags = GENL_ADMIN_PERM,
5749 .internal_flags = NL80211_FLAG_NEED_RTNL,
5750 },
5751 {
5752 .cmd = NL80211_CMD_GET_INTERFACE,
5753 .doit = nl80211_get_interface,
5754 .dumpit = nl80211_dump_interface,
5755 .policy = nl80211_policy,
5756 /* can be retrieved by unprivileged users */
5757 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5758 },
5759 {
5760 .cmd = NL80211_CMD_SET_INTERFACE,
5761 .doit = nl80211_set_interface,
5762 .policy = nl80211_policy,
5763 .flags = GENL_ADMIN_PERM,
5764 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5765 NL80211_FLAG_NEED_RTNL,
5766 },
5767 {
5768 .cmd = NL80211_CMD_NEW_INTERFACE,
5769 .doit = nl80211_new_interface,
5770 .policy = nl80211_policy,
5771 .flags = GENL_ADMIN_PERM,
5772 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5773 NL80211_FLAG_NEED_RTNL,
5774 },
5775 {
5776 .cmd = NL80211_CMD_DEL_INTERFACE,
5777 .doit = nl80211_del_interface,
5778 .policy = nl80211_policy,
5779 .flags = GENL_ADMIN_PERM,
5780 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5781 NL80211_FLAG_NEED_RTNL,
5782 },
5783 {
5784 .cmd = NL80211_CMD_GET_KEY,
5785 .doit = nl80211_get_key,
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_KEY,
5793 .doit = nl80211_set_key,
5794 .policy = nl80211_policy,
5795 .flags = GENL_ADMIN_PERM,
5796 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5797 NL80211_FLAG_NEED_RTNL,
5798 },
5799 {
5800 .cmd = NL80211_CMD_NEW_KEY,
5801 .doit = nl80211_new_key,
5802 .policy = nl80211_policy,
5803 .flags = GENL_ADMIN_PERM,
5804 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5805 NL80211_FLAG_NEED_RTNL,
5806 },
5807 {
5808 .cmd = NL80211_CMD_DEL_KEY,
5809 .doit = nl80211_del_key,
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_SET_BEACON,
5817 .policy = nl80211_policy,
5818 .flags = GENL_ADMIN_PERM,
5819 .doit = nl80211_addset_beacon,
5820 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5821 NL80211_FLAG_NEED_RTNL,
5822 },
5823 {
5824 .cmd = NL80211_CMD_NEW_BEACON,
5825 .policy = nl80211_policy,
5826 .flags = GENL_ADMIN_PERM,
5827 .doit = nl80211_addset_beacon,
5828 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5829 NL80211_FLAG_NEED_RTNL,
5830 },
5831 {
5832 .cmd = NL80211_CMD_DEL_BEACON,
5833 .policy = nl80211_policy,
5834 .flags = GENL_ADMIN_PERM,
5835 .doit = nl80211_del_beacon,
5836 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5837 NL80211_FLAG_NEED_RTNL,
5838 },
5839 {
5840 .cmd = NL80211_CMD_GET_STATION,
5841 .doit = nl80211_get_station,
5842 .dumpit = nl80211_dump_station,
5843 .policy = nl80211_policy,
5844 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5845 NL80211_FLAG_NEED_RTNL,
5846 },
5847 {
5848 .cmd = NL80211_CMD_SET_STATION,
5849 .doit = nl80211_set_station,
5850 .policy = nl80211_policy,
5851 .flags = GENL_ADMIN_PERM,
5852 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5853 NL80211_FLAG_NEED_RTNL,
5854 },
5855 {
5856 .cmd = NL80211_CMD_NEW_STATION,
5857 .doit = nl80211_new_station,
5858 .policy = nl80211_policy,
5859 .flags = GENL_ADMIN_PERM,
5860 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5861 NL80211_FLAG_NEED_RTNL,
5862 },
5863 {
5864 .cmd = NL80211_CMD_DEL_STATION,
5865 .doit = nl80211_del_station,
5866 .policy = nl80211_policy,
5867 .flags = GENL_ADMIN_PERM,
5868 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5869 NL80211_FLAG_NEED_RTNL,
5870 },
5871 {
5872 .cmd = NL80211_CMD_GET_MPATH,
5873 .doit = nl80211_get_mpath,
5874 .dumpit = nl80211_dump_mpath,
5875 .policy = nl80211_policy,
5876 .flags = GENL_ADMIN_PERM,
5877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5878 NL80211_FLAG_NEED_RTNL,
5879 },
5880 {
5881 .cmd = NL80211_CMD_SET_MPATH,
5882 .doit = nl80211_set_mpath,
5883 .policy = nl80211_policy,
5884 .flags = GENL_ADMIN_PERM,
5885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5886 NL80211_FLAG_NEED_RTNL,
5887 },
5888 {
5889 .cmd = NL80211_CMD_NEW_MPATH,
5890 .doit = nl80211_new_mpath,
5891 .policy = nl80211_policy,
5892 .flags = GENL_ADMIN_PERM,
5893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5894 NL80211_FLAG_NEED_RTNL,
5895 },
5896 {
5897 .cmd = NL80211_CMD_DEL_MPATH,
5898 .doit = nl80211_del_mpath,
5899 .policy = nl80211_policy,
5900 .flags = GENL_ADMIN_PERM,
5901 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5902 NL80211_FLAG_NEED_RTNL,
5903 },
5904 {
5905 .cmd = NL80211_CMD_SET_BSS,
5906 .doit = nl80211_set_bss,
5907 .policy = nl80211_policy,
5908 .flags = GENL_ADMIN_PERM,
5909 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5910 NL80211_FLAG_NEED_RTNL,
5911 },
5912 {
5913 .cmd = NL80211_CMD_GET_REG,
5914 .doit = nl80211_get_reg,
5915 .policy = nl80211_policy,
5916 /* can be retrieved by unprivileged users */
5917 },
5918 {
5919 .cmd = NL80211_CMD_SET_REG,
5920 .doit = nl80211_set_reg,
5921 .policy = nl80211_policy,
5922 .flags = GENL_ADMIN_PERM,
5923 },
5924 {
5925 .cmd = NL80211_CMD_REQ_SET_REG,
5926 .doit = nl80211_req_set_reg,
5927 .policy = nl80211_policy,
5928 .flags = GENL_ADMIN_PERM,
5929 },
5930 {
5931 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5932 .doit = nl80211_get_mesh_config,
5933 .policy = nl80211_policy,
5934 /* can be retrieved by unprivileged users */
5935 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5936 NL80211_FLAG_NEED_RTNL,
5937 },
5938 {
5939 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5940 .doit = nl80211_update_mesh_config,
5941 .policy = nl80211_policy,
5942 .flags = GENL_ADMIN_PERM,
5943 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5944 NL80211_FLAG_NEED_RTNL,
5945 },
5946 {
5947 .cmd = NL80211_CMD_TRIGGER_SCAN,
5948 .doit = nl80211_trigger_scan,
5949 .policy = nl80211_policy,
5950 .flags = GENL_ADMIN_PERM,
5951 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5952 NL80211_FLAG_NEED_RTNL,
5953 },
5954 {
5955 .cmd = NL80211_CMD_GET_SCAN,
5956 .policy = nl80211_policy,
5957 .dumpit = nl80211_dump_scan,
5958 },
5959 {
5960 .cmd = NL80211_CMD_START_SCHED_SCAN,
5961 .doit = nl80211_start_sched_scan,
5962 .policy = nl80211_policy,
5963 .flags = GENL_ADMIN_PERM,
5964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5965 NL80211_FLAG_NEED_RTNL,
5966 },
5967 {
5968 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
5969 .doit = nl80211_stop_sched_scan,
5970 .policy = nl80211_policy,
5971 .flags = GENL_ADMIN_PERM,
5972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5973 NL80211_FLAG_NEED_RTNL,
5974 },
5975 {
5976 .cmd = NL80211_CMD_AUTHENTICATE,
5977 .doit = nl80211_authenticate,
5978 .policy = nl80211_policy,
5979 .flags = GENL_ADMIN_PERM,
5980 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5981 NL80211_FLAG_NEED_RTNL,
5982 },
5983 {
5984 .cmd = NL80211_CMD_ASSOCIATE,
5985 .doit = nl80211_associate,
5986 .policy = nl80211_policy,
5987 .flags = GENL_ADMIN_PERM,
5988 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5989 NL80211_FLAG_NEED_RTNL,
5990 },
5991 {
5992 .cmd = NL80211_CMD_DEAUTHENTICATE,
5993 .doit = nl80211_deauthenticate,
5994 .policy = nl80211_policy,
5995 .flags = GENL_ADMIN_PERM,
5996 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5997 NL80211_FLAG_NEED_RTNL,
5998 },
5999 {
6000 .cmd = NL80211_CMD_DISASSOCIATE,
6001 .doit = nl80211_disassociate,
6002 .policy = nl80211_policy,
6003 .flags = GENL_ADMIN_PERM,
6004 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6005 NL80211_FLAG_NEED_RTNL,
6006 },
6007 {
6008 .cmd = NL80211_CMD_JOIN_IBSS,
6009 .doit = nl80211_join_ibss,
6010 .policy = nl80211_policy,
6011 .flags = GENL_ADMIN_PERM,
6012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6013 NL80211_FLAG_NEED_RTNL,
6014 },
6015 {
6016 .cmd = NL80211_CMD_LEAVE_IBSS,
6017 .doit = nl80211_leave_ibss,
6018 .policy = nl80211_policy,
6019 .flags = GENL_ADMIN_PERM,
6020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6021 NL80211_FLAG_NEED_RTNL,
6022 },
6023 #ifdef CONFIG_NL80211_TESTMODE
6024 {
6025 .cmd = NL80211_CMD_TESTMODE,
6026 .doit = nl80211_testmode_do,
6027 .dumpit = nl80211_testmode_dump,
6028 .policy = nl80211_policy,
6029 .flags = GENL_ADMIN_PERM,
6030 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6031 NL80211_FLAG_NEED_RTNL,
6032 },
6033 #endif
6034 {
6035 .cmd = NL80211_CMD_CONNECT,
6036 .doit = nl80211_connect,
6037 .policy = nl80211_policy,
6038 .flags = GENL_ADMIN_PERM,
6039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6040 NL80211_FLAG_NEED_RTNL,
6041 },
6042 {
6043 .cmd = NL80211_CMD_DISCONNECT,
6044 .doit = nl80211_disconnect,
6045 .policy = nl80211_policy,
6046 .flags = GENL_ADMIN_PERM,
6047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6048 NL80211_FLAG_NEED_RTNL,
6049 },
6050 {
6051 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6052 .doit = nl80211_wiphy_netns,
6053 .policy = nl80211_policy,
6054 .flags = GENL_ADMIN_PERM,
6055 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6056 NL80211_FLAG_NEED_RTNL,
6057 },
6058 {
6059 .cmd = NL80211_CMD_GET_SURVEY,
6060 .policy = nl80211_policy,
6061 .dumpit = nl80211_dump_survey,
6062 },
6063 {
6064 .cmd = NL80211_CMD_SET_PMKSA,
6065 .doit = nl80211_setdel_pmksa,
6066 .policy = nl80211_policy,
6067 .flags = GENL_ADMIN_PERM,
6068 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6069 NL80211_FLAG_NEED_RTNL,
6070 },
6071 {
6072 .cmd = NL80211_CMD_DEL_PMKSA,
6073 .doit = nl80211_setdel_pmksa,
6074 .policy = nl80211_policy,
6075 .flags = GENL_ADMIN_PERM,
6076 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6077 NL80211_FLAG_NEED_RTNL,
6078 },
6079 {
6080 .cmd = NL80211_CMD_FLUSH_PMKSA,
6081 .doit = nl80211_flush_pmksa,
6082 .policy = nl80211_policy,
6083 .flags = GENL_ADMIN_PERM,
6084 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6085 NL80211_FLAG_NEED_RTNL,
6086 },
6087 {
6088 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6089 .doit = nl80211_remain_on_channel,
6090 .policy = nl80211_policy,
6091 .flags = GENL_ADMIN_PERM,
6092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6093 NL80211_FLAG_NEED_RTNL,
6094 },
6095 {
6096 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6097 .doit = nl80211_cancel_remain_on_channel,
6098 .policy = nl80211_policy,
6099 .flags = GENL_ADMIN_PERM,
6100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6101 NL80211_FLAG_NEED_RTNL,
6102 },
6103 {
6104 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6105 .doit = nl80211_set_tx_bitrate_mask,
6106 .policy = nl80211_policy,
6107 .flags = GENL_ADMIN_PERM,
6108 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6109 NL80211_FLAG_NEED_RTNL,
6110 },
6111 {
6112 .cmd = NL80211_CMD_REGISTER_FRAME,
6113 .doit = nl80211_register_mgmt,
6114 .policy = nl80211_policy,
6115 .flags = GENL_ADMIN_PERM,
6116 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6117 NL80211_FLAG_NEED_RTNL,
6118 },
6119 {
6120 .cmd = NL80211_CMD_FRAME,
6121 .doit = nl80211_tx_mgmt,
6122 .policy = nl80211_policy,
6123 .flags = GENL_ADMIN_PERM,
6124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6125 NL80211_FLAG_NEED_RTNL,
6126 },
6127 {
6128 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6129 .doit = nl80211_tx_mgmt_cancel_wait,
6130 .policy = nl80211_policy,
6131 .flags = GENL_ADMIN_PERM,
6132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6133 NL80211_FLAG_NEED_RTNL,
6134 },
6135 {
6136 .cmd = NL80211_CMD_SET_POWER_SAVE,
6137 .doit = nl80211_set_power_save,
6138 .policy = nl80211_policy,
6139 .flags = GENL_ADMIN_PERM,
6140 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6141 NL80211_FLAG_NEED_RTNL,
6142 },
6143 {
6144 .cmd = NL80211_CMD_GET_POWER_SAVE,
6145 .doit = nl80211_get_power_save,
6146 .policy = nl80211_policy,
6147 /* can be retrieved by unprivileged users */
6148 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6149 NL80211_FLAG_NEED_RTNL,
6150 },
6151 {
6152 .cmd = NL80211_CMD_SET_CQM,
6153 .doit = nl80211_set_cqm,
6154 .policy = nl80211_policy,
6155 .flags = GENL_ADMIN_PERM,
6156 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6157 NL80211_FLAG_NEED_RTNL,
6158 },
6159 {
6160 .cmd = NL80211_CMD_SET_CHANNEL,
6161 .doit = nl80211_set_channel,
6162 .policy = nl80211_policy,
6163 .flags = GENL_ADMIN_PERM,
6164 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6165 NL80211_FLAG_NEED_RTNL,
6166 },
6167 {
6168 .cmd = NL80211_CMD_SET_WDS_PEER,
6169 .doit = nl80211_set_wds_peer,
6170 .policy = nl80211_policy,
6171 .flags = GENL_ADMIN_PERM,
6172 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6173 NL80211_FLAG_NEED_RTNL,
6174 },
6175 {
6176 .cmd = NL80211_CMD_JOIN_MESH,
6177 .doit = nl80211_join_mesh,
6178 .policy = nl80211_policy,
6179 .flags = GENL_ADMIN_PERM,
6180 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6181 NL80211_FLAG_NEED_RTNL,
6182 },
6183 {
6184 .cmd = NL80211_CMD_LEAVE_MESH,
6185 .doit = nl80211_leave_mesh,
6186 .policy = nl80211_policy,
6187 .flags = GENL_ADMIN_PERM,
6188 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6189 NL80211_FLAG_NEED_RTNL,
6190 },
6191 {
6192 .cmd = NL80211_CMD_GET_WOWLAN,
6193 .doit = nl80211_get_wowlan,
6194 .policy = nl80211_policy,
6195 /* can be retrieved by unprivileged users */
6196 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6197 NL80211_FLAG_NEED_RTNL,
6198 },
6199 {
6200 .cmd = NL80211_CMD_SET_WOWLAN,
6201 .doit = nl80211_set_wowlan,
6202 .policy = nl80211_policy,
6203 .flags = GENL_ADMIN_PERM,
6204 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6205 NL80211_FLAG_NEED_RTNL,
6206 },
6207 {
6208 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6209 .doit = nl80211_set_rekey_data,
6210 .policy = nl80211_policy,
6211 .flags = GENL_ADMIN_PERM,
6212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6213 NL80211_FLAG_NEED_RTNL,
6214 },
6215 };
6216
6217 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6218 .name = "mlme",
6219 };
6220
6221 /* multicast groups */
6222 static struct genl_multicast_group nl80211_config_mcgrp = {
6223 .name = "config",
6224 };
6225 static struct genl_multicast_group nl80211_scan_mcgrp = {
6226 .name = "scan",
6227 };
6228 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6229 .name = "regulatory",
6230 };
6231
6232 /* notification functions */
6233
6234 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6235 {
6236 struct sk_buff *msg;
6237
6238 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6239 if (!msg)
6240 return;
6241
6242 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6243 nlmsg_free(msg);
6244 return;
6245 }
6246
6247 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6248 nl80211_config_mcgrp.id, GFP_KERNEL);
6249 }
6250
6251 static int nl80211_add_scan_req(struct sk_buff *msg,
6252 struct cfg80211_registered_device *rdev)
6253 {
6254 struct cfg80211_scan_request *req = rdev->scan_req;
6255 struct nlattr *nest;
6256 int i;
6257
6258 ASSERT_RDEV_LOCK(rdev);
6259
6260 if (WARN_ON(!req))
6261 return 0;
6262
6263 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6264 if (!nest)
6265 goto nla_put_failure;
6266 for (i = 0; i < req->n_ssids; i++)
6267 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6268 nla_nest_end(msg, nest);
6269
6270 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6271 if (!nest)
6272 goto nla_put_failure;
6273 for (i = 0; i < req->n_channels; i++)
6274 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6275 nla_nest_end(msg, nest);
6276
6277 if (req->ie)
6278 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6279
6280 return 0;
6281 nla_put_failure:
6282 return -ENOBUFS;
6283 }
6284
6285 static int nl80211_send_scan_msg(struct sk_buff *msg,
6286 struct cfg80211_registered_device *rdev,
6287 struct net_device *netdev,
6288 u32 pid, u32 seq, int flags,
6289 u32 cmd)
6290 {
6291 void *hdr;
6292
6293 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6294 if (!hdr)
6295 return -1;
6296
6297 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6299
6300 /* ignore errors and send incomplete event anyway */
6301 nl80211_add_scan_req(msg, rdev);
6302
6303 return genlmsg_end(msg, hdr);
6304
6305 nla_put_failure:
6306 genlmsg_cancel(msg, hdr);
6307 return -EMSGSIZE;
6308 }
6309
6310 static int
6311 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6312 struct cfg80211_registered_device *rdev,
6313 struct net_device *netdev,
6314 u32 pid, u32 seq, int flags, u32 cmd)
6315 {
6316 void *hdr;
6317
6318 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6319 if (!hdr)
6320 return -1;
6321
6322 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6323 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6324
6325 return genlmsg_end(msg, hdr);
6326
6327 nla_put_failure:
6328 genlmsg_cancel(msg, hdr);
6329 return -EMSGSIZE;
6330 }
6331
6332 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6333 struct net_device *netdev)
6334 {
6335 struct sk_buff *msg;
6336
6337 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6338 if (!msg)
6339 return;
6340
6341 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6342 NL80211_CMD_TRIGGER_SCAN) < 0) {
6343 nlmsg_free(msg);
6344 return;
6345 }
6346
6347 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6348 nl80211_scan_mcgrp.id, GFP_KERNEL);
6349 }
6350
6351 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6352 struct net_device *netdev)
6353 {
6354 struct sk_buff *msg;
6355
6356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6357 if (!msg)
6358 return;
6359
6360 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6361 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6362 nlmsg_free(msg);
6363 return;
6364 }
6365
6366 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6367 nl80211_scan_mcgrp.id, GFP_KERNEL);
6368 }
6369
6370 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6371 struct net_device *netdev)
6372 {
6373 struct sk_buff *msg;
6374
6375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6376 if (!msg)
6377 return;
6378
6379 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6380 NL80211_CMD_SCAN_ABORTED) < 0) {
6381 nlmsg_free(msg);
6382 return;
6383 }
6384
6385 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6386 nl80211_scan_mcgrp.id, GFP_KERNEL);
6387 }
6388
6389 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6390 struct net_device *netdev)
6391 {
6392 struct sk_buff *msg;
6393
6394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6395 if (!msg)
6396 return;
6397
6398 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6399 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6400 nlmsg_free(msg);
6401 return;
6402 }
6403
6404 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6405 nl80211_scan_mcgrp.id, GFP_KERNEL);
6406 }
6407
6408 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6409 struct net_device *netdev, u32 cmd)
6410 {
6411 struct sk_buff *msg;
6412
6413 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6414 if (!msg)
6415 return;
6416
6417 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6418 nlmsg_free(msg);
6419 return;
6420 }
6421
6422 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6423 nl80211_scan_mcgrp.id, GFP_KERNEL);
6424 }
6425
6426 /*
6427 * This can happen on global regulatory changes or device specific settings
6428 * based on custom world regulatory domains.
6429 */
6430 void nl80211_send_reg_change_event(struct regulatory_request *request)
6431 {
6432 struct sk_buff *msg;
6433 void *hdr;
6434
6435 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6436 if (!msg)
6437 return;
6438
6439 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6440 if (!hdr) {
6441 nlmsg_free(msg);
6442 return;
6443 }
6444
6445 /* Userspace can always count this one always being set */
6446 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6447
6448 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6449 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6450 NL80211_REGDOM_TYPE_WORLD);
6451 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6452 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6453 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6454 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6455 request->intersect)
6456 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6457 NL80211_REGDOM_TYPE_INTERSECTION);
6458 else {
6459 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6460 NL80211_REGDOM_TYPE_COUNTRY);
6461 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6462 }
6463
6464 if (wiphy_idx_valid(request->wiphy_idx))
6465 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6466
6467 if (genlmsg_end(msg, hdr) < 0) {
6468 nlmsg_free(msg);
6469 return;
6470 }
6471
6472 rcu_read_lock();
6473 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6474 GFP_ATOMIC);
6475 rcu_read_unlock();
6476
6477 return;
6478
6479 nla_put_failure:
6480 genlmsg_cancel(msg, hdr);
6481 nlmsg_free(msg);
6482 }
6483
6484 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6485 struct net_device *netdev,
6486 const u8 *buf, size_t len,
6487 enum nl80211_commands cmd, gfp_t gfp)
6488 {
6489 struct sk_buff *msg;
6490 void *hdr;
6491
6492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6493 if (!msg)
6494 return;
6495
6496 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6497 if (!hdr) {
6498 nlmsg_free(msg);
6499 return;
6500 }
6501
6502 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6503 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6504 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6505
6506 if (genlmsg_end(msg, hdr) < 0) {
6507 nlmsg_free(msg);
6508 return;
6509 }
6510
6511 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6512 nl80211_mlme_mcgrp.id, gfp);
6513 return;
6514
6515 nla_put_failure:
6516 genlmsg_cancel(msg, hdr);
6517 nlmsg_free(msg);
6518 }
6519
6520 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6521 struct net_device *netdev, const u8 *buf,
6522 size_t len, gfp_t gfp)
6523 {
6524 nl80211_send_mlme_event(rdev, netdev, buf, len,
6525 NL80211_CMD_AUTHENTICATE, gfp);
6526 }
6527
6528 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6529 struct net_device *netdev, const u8 *buf,
6530 size_t len, gfp_t gfp)
6531 {
6532 nl80211_send_mlme_event(rdev, netdev, buf, len,
6533 NL80211_CMD_ASSOCIATE, gfp);
6534 }
6535
6536 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6537 struct net_device *netdev, const u8 *buf,
6538 size_t len, gfp_t gfp)
6539 {
6540 nl80211_send_mlme_event(rdev, netdev, buf, len,
6541 NL80211_CMD_DEAUTHENTICATE, gfp);
6542 }
6543
6544 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6545 struct net_device *netdev, const u8 *buf,
6546 size_t len, gfp_t gfp)
6547 {
6548 nl80211_send_mlme_event(rdev, netdev, buf, len,
6549 NL80211_CMD_DISASSOCIATE, gfp);
6550 }
6551
6552 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6553 struct net_device *netdev, const u8 *buf,
6554 size_t len, gfp_t gfp)
6555 {
6556 nl80211_send_mlme_event(rdev, netdev, buf, len,
6557 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6558 }
6559
6560 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6561 struct net_device *netdev, const u8 *buf,
6562 size_t len, gfp_t gfp)
6563 {
6564 nl80211_send_mlme_event(rdev, netdev, buf, len,
6565 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6566 }
6567
6568 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6569 struct net_device *netdev, int cmd,
6570 const u8 *addr, gfp_t gfp)
6571 {
6572 struct sk_buff *msg;
6573 void *hdr;
6574
6575 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6576 if (!msg)
6577 return;
6578
6579 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6580 if (!hdr) {
6581 nlmsg_free(msg);
6582 return;
6583 }
6584
6585 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6587 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6588 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6589
6590 if (genlmsg_end(msg, hdr) < 0) {
6591 nlmsg_free(msg);
6592 return;
6593 }
6594
6595 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6596 nl80211_mlme_mcgrp.id, gfp);
6597 return;
6598
6599 nla_put_failure:
6600 genlmsg_cancel(msg, hdr);
6601 nlmsg_free(msg);
6602 }
6603
6604 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6605 struct net_device *netdev, const u8 *addr,
6606 gfp_t gfp)
6607 {
6608 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6609 addr, gfp);
6610 }
6611
6612 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6613 struct net_device *netdev, const u8 *addr,
6614 gfp_t gfp)
6615 {
6616 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6617 addr, gfp);
6618 }
6619
6620 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6621 struct net_device *netdev, const u8 *bssid,
6622 const u8 *req_ie, size_t req_ie_len,
6623 const u8 *resp_ie, size_t resp_ie_len,
6624 u16 status, gfp_t gfp)
6625 {
6626 struct sk_buff *msg;
6627 void *hdr;
6628
6629 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6630 if (!msg)
6631 return;
6632
6633 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6634 if (!hdr) {
6635 nlmsg_free(msg);
6636 return;
6637 }
6638
6639 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6640 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6641 if (bssid)
6642 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6643 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6644 if (req_ie)
6645 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6646 if (resp_ie)
6647 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6648
6649 if (genlmsg_end(msg, hdr) < 0) {
6650 nlmsg_free(msg);
6651 return;
6652 }
6653
6654 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6655 nl80211_mlme_mcgrp.id, gfp);
6656 return;
6657
6658 nla_put_failure:
6659 genlmsg_cancel(msg, hdr);
6660 nlmsg_free(msg);
6661
6662 }
6663
6664 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6665 struct net_device *netdev, const u8 *bssid,
6666 const u8 *req_ie, size_t req_ie_len,
6667 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6668 {
6669 struct sk_buff *msg;
6670 void *hdr;
6671
6672 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6673 if (!msg)
6674 return;
6675
6676 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6677 if (!hdr) {
6678 nlmsg_free(msg);
6679 return;
6680 }
6681
6682 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6683 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6684 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6685 if (req_ie)
6686 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6687 if (resp_ie)
6688 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6689
6690 if (genlmsg_end(msg, hdr) < 0) {
6691 nlmsg_free(msg);
6692 return;
6693 }
6694
6695 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6696 nl80211_mlme_mcgrp.id, gfp);
6697 return;
6698
6699 nla_put_failure:
6700 genlmsg_cancel(msg, hdr);
6701 nlmsg_free(msg);
6702
6703 }
6704
6705 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6706 struct net_device *netdev, u16 reason,
6707 const u8 *ie, size_t ie_len, bool from_ap)
6708 {
6709 struct sk_buff *msg;
6710 void *hdr;
6711
6712 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6713 if (!msg)
6714 return;
6715
6716 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6717 if (!hdr) {
6718 nlmsg_free(msg);
6719 return;
6720 }
6721
6722 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6723 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6724 if (from_ap && reason)
6725 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6726 if (from_ap)
6727 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6728 if (ie)
6729 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6730
6731 if (genlmsg_end(msg, hdr) < 0) {
6732 nlmsg_free(msg);
6733 return;
6734 }
6735
6736 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6737 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6738 return;
6739
6740 nla_put_failure:
6741 genlmsg_cancel(msg, hdr);
6742 nlmsg_free(msg);
6743
6744 }
6745
6746 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6747 struct net_device *netdev, const u8 *bssid,
6748 gfp_t gfp)
6749 {
6750 struct sk_buff *msg;
6751 void *hdr;
6752
6753 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6754 if (!msg)
6755 return;
6756
6757 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6758 if (!hdr) {
6759 nlmsg_free(msg);
6760 return;
6761 }
6762
6763 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6764 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6765 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6766
6767 if (genlmsg_end(msg, hdr) < 0) {
6768 nlmsg_free(msg);
6769 return;
6770 }
6771
6772 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6773 nl80211_mlme_mcgrp.id, gfp);
6774 return;
6775
6776 nla_put_failure:
6777 genlmsg_cancel(msg, hdr);
6778 nlmsg_free(msg);
6779 }
6780
6781 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6782 struct net_device *netdev,
6783 const u8 *macaddr, const u8* ie, u8 ie_len,
6784 gfp_t gfp)
6785 {
6786 struct sk_buff *msg;
6787 void *hdr;
6788
6789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6790 if (!msg)
6791 return;
6792
6793 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6794 if (!hdr) {
6795 nlmsg_free(msg);
6796 return;
6797 }
6798
6799 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6800 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6801 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6802 if (ie_len && ie)
6803 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6804
6805 if (genlmsg_end(msg, hdr) < 0) {
6806 nlmsg_free(msg);
6807 return;
6808 }
6809
6810 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6811 nl80211_mlme_mcgrp.id, gfp);
6812 return;
6813
6814 nla_put_failure:
6815 genlmsg_cancel(msg, hdr);
6816 nlmsg_free(msg);
6817 }
6818
6819 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6820 struct net_device *netdev, const u8 *addr,
6821 enum nl80211_key_type key_type, int key_id,
6822 const u8 *tsc, gfp_t gfp)
6823 {
6824 struct sk_buff *msg;
6825 void *hdr;
6826
6827 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6828 if (!msg)
6829 return;
6830
6831 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6832 if (!hdr) {
6833 nlmsg_free(msg);
6834 return;
6835 }
6836
6837 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6838 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6839 if (addr)
6840 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6841 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6842 if (key_id != -1)
6843 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6844 if (tsc)
6845 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6846
6847 if (genlmsg_end(msg, hdr) < 0) {
6848 nlmsg_free(msg);
6849 return;
6850 }
6851
6852 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6853 nl80211_mlme_mcgrp.id, gfp);
6854 return;
6855
6856 nla_put_failure:
6857 genlmsg_cancel(msg, hdr);
6858 nlmsg_free(msg);
6859 }
6860
6861 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6862 struct ieee80211_channel *channel_before,
6863 struct ieee80211_channel *channel_after)
6864 {
6865 struct sk_buff *msg;
6866 void *hdr;
6867 struct nlattr *nl_freq;
6868
6869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6870 if (!msg)
6871 return;
6872
6873 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6874 if (!hdr) {
6875 nlmsg_free(msg);
6876 return;
6877 }
6878
6879 /*
6880 * Since we are applying the beacon hint to a wiphy we know its
6881 * wiphy_idx is valid
6882 */
6883 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6884
6885 /* Before */
6886 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6887 if (!nl_freq)
6888 goto nla_put_failure;
6889 if (nl80211_msg_put_channel(msg, channel_before))
6890 goto nla_put_failure;
6891 nla_nest_end(msg, nl_freq);
6892
6893 /* After */
6894 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6895 if (!nl_freq)
6896 goto nla_put_failure;
6897 if (nl80211_msg_put_channel(msg, channel_after))
6898 goto nla_put_failure;
6899 nla_nest_end(msg, nl_freq);
6900
6901 if (genlmsg_end(msg, hdr) < 0) {
6902 nlmsg_free(msg);
6903 return;
6904 }
6905
6906 rcu_read_lock();
6907 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6908 GFP_ATOMIC);
6909 rcu_read_unlock();
6910
6911 return;
6912
6913 nla_put_failure:
6914 genlmsg_cancel(msg, hdr);
6915 nlmsg_free(msg);
6916 }
6917
6918 static void nl80211_send_remain_on_chan_event(
6919 int cmd, struct cfg80211_registered_device *rdev,
6920 struct net_device *netdev, u64 cookie,
6921 struct ieee80211_channel *chan,
6922 enum nl80211_channel_type channel_type,
6923 unsigned int duration, gfp_t gfp)
6924 {
6925 struct sk_buff *msg;
6926 void *hdr;
6927
6928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6929 if (!msg)
6930 return;
6931
6932 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6933 if (!hdr) {
6934 nlmsg_free(msg);
6935 return;
6936 }
6937
6938 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6939 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6940 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6941 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6942 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6943
6944 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6945 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6946
6947 if (genlmsg_end(msg, hdr) < 0) {
6948 nlmsg_free(msg);
6949 return;
6950 }
6951
6952 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6953 nl80211_mlme_mcgrp.id, gfp);
6954 return;
6955
6956 nla_put_failure:
6957 genlmsg_cancel(msg, hdr);
6958 nlmsg_free(msg);
6959 }
6960
6961 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
6962 struct net_device *netdev, u64 cookie,
6963 struct ieee80211_channel *chan,
6964 enum nl80211_channel_type channel_type,
6965 unsigned int duration, gfp_t gfp)
6966 {
6967 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
6968 rdev, netdev, cookie, chan,
6969 channel_type, duration, gfp);
6970 }
6971
6972 void nl80211_send_remain_on_channel_cancel(
6973 struct cfg80211_registered_device *rdev, struct net_device *netdev,
6974 u64 cookie, struct ieee80211_channel *chan,
6975 enum nl80211_channel_type channel_type, gfp_t gfp)
6976 {
6977 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6978 rdev, netdev, cookie, chan,
6979 channel_type, 0, gfp);
6980 }
6981
6982 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
6983 struct net_device *dev, const u8 *mac_addr,
6984 struct station_info *sinfo, gfp_t gfp)
6985 {
6986 struct sk_buff *msg;
6987
6988 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6989 if (!msg)
6990 return;
6991
6992 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
6993 nlmsg_free(msg);
6994 return;
6995 }
6996
6997 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6998 nl80211_mlme_mcgrp.id, gfp);
6999 }
7000
7001 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7002 struct net_device *dev, const u8 *mac_addr,
7003 gfp_t gfp)
7004 {
7005 struct sk_buff *msg;
7006 void *hdr;
7007
7008 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7009 if (!msg)
7010 return;
7011
7012 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7013 if (!hdr) {
7014 nlmsg_free(msg);
7015 return;
7016 }
7017
7018 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7019 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7020
7021 if (genlmsg_end(msg, hdr) < 0) {
7022 nlmsg_free(msg);
7023 return;
7024 }
7025
7026 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7027 nl80211_mlme_mcgrp.id, gfp);
7028 return;
7029
7030 nla_put_failure:
7031 genlmsg_cancel(msg, hdr);
7032 nlmsg_free(msg);
7033 }
7034
7035 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7036 struct net_device *netdev, u32 nlpid,
7037 int freq, const u8 *buf, size_t len, gfp_t gfp)
7038 {
7039 struct sk_buff *msg;
7040 void *hdr;
7041 int err;
7042
7043 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7044 if (!msg)
7045 return -ENOMEM;
7046
7047 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7048 if (!hdr) {
7049 nlmsg_free(msg);
7050 return -ENOMEM;
7051 }
7052
7053 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7054 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7055 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7056 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7057
7058 err = genlmsg_end(msg, hdr);
7059 if (err < 0) {
7060 nlmsg_free(msg);
7061 return err;
7062 }
7063
7064 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7065 if (err < 0)
7066 return err;
7067 return 0;
7068
7069 nla_put_failure:
7070 genlmsg_cancel(msg, hdr);
7071 nlmsg_free(msg);
7072 return -ENOBUFS;
7073 }
7074
7075 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7076 struct net_device *netdev, u64 cookie,
7077 const u8 *buf, size_t len, bool ack,
7078 gfp_t gfp)
7079 {
7080 struct sk_buff *msg;
7081 void *hdr;
7082
7083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7084 if (!msg)
7085 return;
7086
7087 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7088 if (!hdr) {
7089 nlmsg_free(msg);
7090 return;
7091 }
7092
7093 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7094 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7095 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7096 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7097 if (ack)
7098 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7099
7100 if (genlmsg_end(msg, hdr) < 0) {
7101 nlmsg_free(msg);
7102 return;
7103 }
7104
7105 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7106 return;
7107
7108 nla_put_failure:
7109 genlmsg_cancel(msg, hdr);
7110 nlmsg_free(msg);
7111 }
7112
7113 void
7114 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7115 struct net_device *netdev,
7116 enum nl80211_cqm_rssi_threshold_event rssi_event,
7117 gfp_t gfp)
7118 {
7119 struct sk_buff *msg;
7120 struct nlattr *pinfoattr;
7121 void *hdr;
7122
7123 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7124 if (!msg)
7125 return;
7126
7127 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7128 if (!hdr) {
7129 nlmsg_free(msg);
7130 return;
7131 }
7132
7133 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7134 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7135
7136 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7137 if (!pinfoattr)
7138 goto nla_put_failure;
7139
7140 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7141 rssi_event);
7142
7143 nla_nest_end(msg, pinfoattr);
7144
7145 if (genlmsg_end(msg, hdr) < 0) {
7146 nlmsg_free(msg);
7147 return;
7148 }
7149
7150 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7151 nl80211_mlme_mcgrp.id, gfp);
7152 return;
7153
7154 nla_put_failure:
7155 genlmsg_cancel(msg, hdr);
7156 nlmsg_free(msg);
7157 }
7158
7159 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7160 struct net_device *netdev, const u8 *bssid,
7161 const u8 *replay_ctr, gfp_t gfp)
7162 {
7163 struct sk_buff *msg;
7164 struct nlattr *rekey_attr;
7165 void *hdr;
7166
7167 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7168 if (!msg)
7169 return;
7170
7171 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7172 if (!hdr) {
7173 nlmsg_free(msg);
7174 return;
7175 }
7176
7177 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7178 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7179 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7180
7181 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7182 if (!rekey_attr)
7183 goto nla_put_failure;
7184
7185 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7186 NL80211_REPLAY_CTR_LEN, replay_ctr);
7187
7188 nla_nest_end(msg, rekey_attr);
7189
7190 if (genlmsg_end(msg, hdr) < 0) {
7191 nlmsg_free(msg);
7192 return;
7193 }
7194
7195 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7196 nl80211_mlme_mcgrp.id, gfp);
7197 return;
7198
7199 nla_put_failure:
7200 genlmsg_cancel(msg, hdr);
7201 nlmsg_free(msg);
7202 }
7203
7204 void
7205 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7206 struct net_device *netdev, const u8 *peer,
7207 u32 num_packets, gfp_t gfp)
7208 {
7209 struct sk_buff *msg;
7210 struct nlattr *pinfoattr;
7211 void *hdr;
7212
7213 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7214 if (!msg)
7215 return;
7216
7217 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7218 if (!hdr) {
7219 nlmsg_free(msg);
7220 return;
7221 }
7222
7223 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7224 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7225 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7226
7227 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7228 if (!pinfoattr)
7229 goto nla_put_failure;
7230
7231 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7232
7233 nla_nest_end(msg, pinfoattr);
7234
7235 if (genlmsg_end(msg, hdr) < 0) {
7236 nlmsg_free(msg);
7237 return;
7238 }
7239
7240 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7241 nl80211_mlme_mcgrp.id, gfp);
7242 return;
7243
7244 nla_put_failure:
7245 genlmsg_cancel(msg, hdr);
7246 nlmsg_free(msg);
7247 }
7248
7249 static int nl80211_netlink_notify(struct notifier_block * nb,
7250 unsigned long state,
7251 void *_notify)
7252 {
7253 struct netlink_notify *notify = _notify;
7254 struct cfg80211_registered_device *rdev;
7255 struct wireless_dev *wdev;
7256
7257 if (state != NETLINK_URELEASE)
7258 return NOTIFY_DONE;
7259
7260 rcu_read_lock();
7261
7262 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7263 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7264 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7265
7266 rcu_read_unlock();
7267
7268 return NOTIFY_DONE;
7269 }
7270
7271 static struct notifier_block nl80211_netlink_notifier = {
7272 .notifier_call = nl80211_netlink_notify,
7273 };
7274
7275 /* initialisation/exit functions */
7276
7277 int nl80211_init(void)
7278 {
7279 int err;
7280
7281 err = genl_register_family_with_ops(&nl80211_fam,
7282 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7283 if (err)
7284 return err;
7285
7286 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7287 if (err)
7288 goto err_out;
7289
7290 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7291 if (err)
7292 goto err_out;
7293
7294 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7295 if (err)
7296 goto err_out;
7297
7298 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7299 if (err)
7300 goto err_out;
7301
7302 #ifdef CONFIG_NL80211_TESTMODE
7303 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7304 if (err)
7305 goto err_out;
7306 #endif
7307
7308 err = netlink_register_notifier(&nl80211_netlink_notifier);
7309 if (err)
7310 goto err_out;
7311
7312 return 0;
7313 err_out:
7314 genl_unregister_family(&nl80211_fam);
7315 return err;
7316 }
7317
7318 void nl80211_exit(void)
7319 {
7320 netlink_unregister_notifier(&nl80211_netlink_notifier);
7321 genl_unregister_family(&nl80211_fam);
7322 }
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