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iwlagn: fix witespace damage
[mirror_ubuntu-zesty-kernel.git] / net / wireless / nl80211.c
CommitLineData
55682965
JB		 1/*
2 * This is the new netlink-based wireless configuration interface.
3 *
026331c4 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
55682965
JB		 5 */
6
7#include <linux/if.h>
8#include <linux/module.h>
9#include <linux/err.h>
5a0e3ad6 10#include <linux/slab.h>
55682965
JB		 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>
2a519311 17#include <linux/etherdevice.h>
463d0183 18#include <net/net_namespace.h>
55682965
JB		 19#include <net/genetlink.h>
20#include <net/cfg80211.h>
463d0183 21#include <net/sock.h>
55682965
JB		 22#include "core.h"
23#include "nl80211.h"
b2e1b302 24#include "reg.h"
55682965 25
4c476991
JB		 26static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
27 struct genl_info *info);
28static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
29 struct genl_info *info);
30
55682965
JB		 31/* the netlink family */
32static struct genl_family nl80211_fam = {
33 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
34 .name = "nl80211", /* have users key off the name instead */
35 .hdrsize = 0, /* no private header */
36 .version = 1, /* no particular meaning now */
37 .maxattr = NL80211_ATTR_MAX,
463d0183 38 .netnsok = true,
4c476991
JB		 39 .pre_doit = nl80211_pre_doit,
40 .post_doit = nl80211_post_doit,
55682965
JB		 41};
42
79c97e97 43/* internal helper: get rdev and dev */
463d0183 44static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
79c97e97 45 struct cfg80211_registered_device **rdev,
55682965
JB		 46 struct net_device **dev)
47{
463d0183 48 struct nlattr **attrs = info->attrs;
55682965
JB		 49 int ifindex;
50
bba95fef 51 if (!attrs[NL80211_ATTR_IFINDEX])
55682965
JB		 52 return -EINVAL;
53
bba95fef 54 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
463d0183 55 *dev = dev_get_by_index(genl_info_net(info), ifindex);
55682965
JB		 56 if (!*dev)
57 return -ENODEV;
58
463d0183 59 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
79c97e97 60 if (IS_ERR(*rdev)) {
55682965 61 dev_put(*dev);
79c97e97 62 return PTR_ERR(*rdev);
55682965
JB		 63 }
64
65 return 0;
66}
67
68/* policy for the attributes */
b54452b0 69static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
55682965
JB		 70 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
71 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
079e24ed 72 .len = 20-1 },
31888487 73 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
72bdcf34 74 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
094d05dc 75 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
b9a5f8ca
JM		 76 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
77 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
78 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
79 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
81077e82 80 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
55682965
JB		 81
82 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
83 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
84 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
41ade00f
JB		 85
86 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
3e5d7649 87 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
41ade00f 88
b9454e83 89 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
41ade00f
JB		 90 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
91 .len = WLAN_MAX_KEY_LEN },
92 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
93 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
94 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
9f26a952 95 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
e31b8213 96 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
ed1b6cc7
JB		 97
98 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
99 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
100 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
101 .len = IEEE80211_MAX_DATA_LEN },
102 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
103 .len = IEEE80211_MAX_DATA_LEN },
5727ef1b
JB		 104 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
105 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
106 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
107 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
108 .len = NL80211_MAX_SUPP_RATES },
2ec600d6 109 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
5727ef1b 110 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
0a9542ee 111 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
2ec600d6
LCC		 112 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
113 .len = IEEE80211_MAX_MESH_ID_LEN },
114 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
9f1ba906 115
b2e1b302
LR		 116 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
117 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
118
9f1ba906
JM		 119 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
120 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
121 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
90c97a04
JM		 122 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
123 .len = NL80211_MAX_SUPP_RATES },
50b12f59 124 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
36aedc90 125
93da9cc1 126 [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
127
36aedc90
JM		 128 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
129 .len = NL80211_HT_CAPABILITY_LEN },
9aed3cc1
JM		 130
131 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
132 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
133 .len = IEEE80211_MAX_DATA_LEN },
2a519311
JB		 134 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
135 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
636a5d36
JM		 136
137 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
138 .len = IEEE80211_MAX_SSID_LEN },
139 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
140 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
04a773ad 141 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
1965c853 142 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
dc6382ce 143 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
eccb8e8f
JB		 144 [NL80211_ATTR_STA_FLAGS2] = {
145 .len = sizeof(struct nl80211_sta_flag_update),
146 },
3f77316c 147 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
c0692b8f
JB		 148 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
149 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
b23aa676
SO		 150 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
151 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
152 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
463d0183 153 [NL80211_ATTR_PID] = { .type = NLA_U32 },
8b787643 154 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
67fbb16b
SO		 155 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
156 .len = WLAN_PMKID_LEN },
9588bbd5
JM		 157 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
158 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
13ae75b1 159 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
026331c4
JM		 160 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
161 .len = IEEE80211_MAX_DATA_LEN },
162 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
ffb9eb3d 163 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
d6dc1a38 164 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
d5cdfacb 165 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
fd8aaaf3 166 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
98d2ff8b
JO		 167 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
168 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
2e161f78 169 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
afe0cbf8
BR		 170 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
171 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
885a46d0 172 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
f7ca38df 173 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
dbd2fd65 174 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
55682965
JB		 175};
176
e31b8213 177/* policy for the key attributes */
b54452b0 178static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
fffd0934 179 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
b9454e83
JB		 180 [NL80211_KEY_IDX] = { .type = NLA_U8 },
181 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
182 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
183 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
184 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
e31b8213 185 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
dbd2fd65
JB		 186 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
187};
188
189/* policy for the key default flags */
190static const struct nla_policy
191nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
192 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
193 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
b9454e83
JB		 194};
195
a043897a
HS		 196/* ifidx get helper */
197static int nl80211_get_ifidx(struct netlink_callback *cb)
198{
199 int res;
200
201 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
202 nl80211_fam.attrbuf, nl80211_fam.maxattr,
203 nl80211_policy);
204 if (res)
205 return res;
206
207 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
208 return -EINVAL;
209
210 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
211 if (!res)
212 return -EINVAL;
213 return res;
214}
215
67748893
JB		 216static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
217 struct netlink_callback *cb,
218 struct cfg80211_registered_device **rdev,
219 struct net_device **dev)
220{
221 int ifidx = cb->args[0];
222 int err;
223
224 if (!ifidx)
225 ifidx = nl80211_get_ifidx(cb);
226 if (ifidx < 0)
227 return ifidx;
228
229 cb->args[0] = ifidx;
230
231 rtnl_lock();
232
233 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
234 if (!*dev) {
235 err = -ENODEV;
236 goto out_rtnl;
237 }
238
239 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
3cc25e51
FF		 240 if (IS_ERR(*rdev)) {
241 err = PTR_ERR(*rdev);
67748893
JB		 242 goto out_rtnl;
243 }
244
245 return 0;
246 out_rtnl:
247 rtnl_unlock();
248 return err;
249}
250
251static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
252{
253 cfg80211_unlock_rdev(rdev);
254 rtnl_unlock();
255}
256
f4a11bb0
JB		 257/* IE validation */
258static bool is_valid_ie_attr(const struct nlattr *attr)
259{
260 const u8 *pos;
261 int len;
262
263 if (!attr)
264 return true;
265
266 pos = nla_data(attr);
267 len = nla_len(attr);
268
269 while (len) {
270 u8 elemlen;
271
272 if (len < 2)
273 return false;
274 len -= 2;
275
276 elemlen = pos[1];
277 if (elemlen > len)
278 return false;
279
280 len -= elemlen;
281 pos += 2 + elemlen;
282 }
283
284 return true;
285}
286
55682965
JB		 287/* message building helper */
288static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
289 int flags, u8 cmd)
290{
291 /* since there is no private header just add the generic one */
292 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
293}
294
5dab3b8a
LR		 295static int nl80211_msg_put_channel(struct sk_buff *msg,
296 struct ieee80211_channel *chan)
297{
298 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
299 chan->center_freq);
300
301 if (chan->flags & IEEE80211_CHAN_DISABLED)
302 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
303 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
304 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
305 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
306 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
307 if (chan->flags & IEEE80211_CHAN_RADAR)
308 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
309
310 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
311 DBM_TO_MBM(chan->max_power));
312
313 return 0;
314
315 nla_put_failure:
316 return -ENOBUFS;
317}
318
55682965
JB		 319/* netlink command implementations */
320
b9454e83
JB		 321struct key_parse {
322 struct key_params p;
323 int idx;
e31b8213 324 int type;
b9454e83 325 bool def, defmgmt;
dbd2fd65 326 bool def_uni, def_multi;
b9454e83
JB		 327};
328
329static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
330{
331 struct nlattr *tb[NL80211_KEY_MAX + 1];
332 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
333 nl80211_key_policy);
334 if (err)
335 return err;
336
337 k->def = !!tb[NL80211_KEY_DEFAULT];
338 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
339
dbd2fd65
JB		 340 if (k->def) {
341 k->def_uni = true;
342 k->def_multi = true;
343 }
344 if (k->defmgmt)
345 k->def_multi = true;
346
b9454e83
JB		 347 if (tb[NL80211_KEY_IDX])
348 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
349
350 if (tb[NL80211_KEY_DATA]) {
351 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
352 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
353 }
354
355 if (tb[NL80211_KEY_SEQ]) {
356 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
357 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
358 }
359
360 if (tb[NL80211_KEY_CIPHER])
361 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
362
e31b8213
JB		 363 if (tb[NL80211_KEY_TYPE]) {
364 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
365 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
366 return -EINVAL;
367 }
368
dbd2fd65
JB		 369 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
370 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
371 int err = nla_parse_nested(kdt,
372 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
373 tb[NL80211_KEY_DEFAULT_TYPES],
374 nl80211_key_default_policy);
375 if (err)
376 return err;
377
378 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
379 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
380 }
381
b9454e83
JB		 382 return 0;
383}
384
385static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
386{
387 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
388 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
389 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
390 }
391
392 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
393 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
394 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
395 }
396
397 if (info->attrs[NL80211_ATTR_KEY_IDX])
398 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
399
400 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
401 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
402
403 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
404 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
405
dbd2fd65
JB		 406 if (k->def) {
407 k->def_uni = true;
408 k->def_multi = true;
409 }
410 if (k->defmgmt)
411 k->def_multi = true;
412
e31b8213
JB		 413 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
414 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
415 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
416 return -EINVAL;
417 }
418
dbd2fd65
JB		 419 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
420 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
421 int err = nla_parse_nested(
422 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
423 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
424 nl80211_key_default_policy);
425 if (err)
426 return err;
427
428 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
429 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
430 }
431
b9454e83
JB		 432 return 0;
433}
434
435static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
436{
437 int err;
438
439 memset(k, 0, sizeof(*k));
440 k->idx = -1;
e31b8213 441 k->type = -1;
b9454e83
JB		 442
443 if (info->attrs[NL80211_ATTR_KEY])
444 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
445 else
446 err = nl80211_parse_key_old(info, k);
447
448 if (err)
449 return err;
450
451 if (k->def && k->defmgmt)
452 return -EINVAL;
453
dbd2fd65
JB		 454 if (k->defmgmt) {
455 if (k->def_uni || !k->def_multi)
456 return -EINVAL;
457 }
458
b9454e83
JB		 459 if (k->idx != -1) {
460 if (k->defmgmt) {
461 if (k->idx < 4 || k->idx > 5)
462 return -EINVAL;
463 } else if (k->def) {
464 if (k->idx < 0 || k->idx > 3)
465 return -EINVAL;
466 } else {
467 if (k->idx < 0 || k->idx > 5)
468 return -EINVAL;
469 }
470 }
471
472 return 0;
473}
474
fffd0934
JB		 475static struct cfg80211_cached_keys *
476nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
477 struct nlattr *keys)
478{
479 struct key_parse parse;
480 struct nlattr *key;
481 struct cfg80211_cached_keys *result;
482 int rem, err, def = 0;
483
484 result = kzalloc(sizeof(*result), GFP_KERNEL);
485 if (!result)
486 return ERR_PTR(-ENOMEM);
487
488 result->def = -1;
489 result->defmgmt = -1;
490
491 nla_for_each_nested(key, keys, rem) {
492 memset(&parse, 0, sizeof(parse));
493 parse.idx = -1;
494
495 err = nl80211_parse_key_new(key, &parse);
496 if (err)
497 goto error;
498 err = -EINVAL;
499 if (!parse.p.key)
500 goto error;
501 if (parse.idx < 0 || parse.idx > 4)
502 goto error;
503 if (parse.def) {
504 if (def)
505 goto error;
506 def = 1;
507 result->def = parse.idx;
dbd2fd65
JB		 508 if (!parse.def_uni || !parse.def_multi)
509 goto error;
fffd0934
JB		 510 } else if (parse.defmgmt)
511 goto error;
512 err = cfg80211_validate_key_settings(rdev, &parse.p,
e31b8213 513 parse.idx, false, NULL);
fffd0934
JB		 514 if (err)
515 goto error;
516 result->params[parse.idx].cipher = parse.p.cipher;
517 result->params[parse.idx].key_len = parse.p.key_len;
518 result->params[parse.idx].key = result->data[parse.idx];
519 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
520 }
521
522 return result;
523 error:
524 kfree(result);
525 return ERR_PTR(err);
526}
527
528static int nl80211_key_allowed(struct wireless_dev *wdev)
529{
530 ASSERT_WDEV_LOCK(wdev);
531
fffd0934
JB		 532 switch (wdev->iftype) {
533 case NL80211_IFTYPE_AP:
534 case NL80211_IFTYPE_AP_VLAN:
074ac8df 535 case NL80211_IFTYPE_P2P_GO:
fffd0934
JB		 536 break;
537 case NL80211_IFTYPE_ADHOC:
538 if (!wdev->current_bss)
539 return -ENOLINK;
540 break;
541 case NL80211_IFTYPE_STATION:
074ac8df 542 case NL80211_IFTYPE_P2P_CLIENT:
fffd0934
JB		 543 if (wdev->sme_state != CFG80211_SME_CONNECTED)
544 return -ENOLINK;
545 break;
546 default:
547 return -EINVAL;
548 }
549
550 return 0;
551}
552
55682965
JB		 553static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
554 struct cfg80211_registered_device *dev)
555{
556 void *hdr;
ee688b00
JB		 557 struct nlattr *nl_bands, *nl_band;
558 struct nlattr *nl_freqs, *nl_freq;
559 struct nlattr *nl_rates, *nl_rate;
f59ac048 560 struct nlattr *nl_modes;
8fdc621d 561 struct nlattr *nl_cmds;
ee688b00
JB		 562 enum ieee80211_band band;
563 struct ieee80211_channel *chan;
564 struct ieee80211_rate *rate;
565 int i;
f59ac048 566 u16 ifmodes = dev->wiphy.interface_modes;
2e161f78
JB		 567 const struct ieee80211_txrx_stypes *mgmt_stypes =
568 dev->wiphy.mgmt_stypes;
55682965
JB		 569
570 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
571 if (!hdr)
572 return -1;
573
b5850a7a 574 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
55682965 575 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
b9a5f8ca 576
f5ea9120
JB		 577 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
578 cfg80211_rdev_list_generation);
579
b9a5f8ca
JM		 580 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
581 dev->wiphy.retry_short);
582 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
583 dev->wiphy.retry_long);
584 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
585 dev->wiphy.frag_threshold);
586 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
587 dev->wiphy.rts_threshold);
81077e82
LT		 588 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
589 dev->wiphy.coverage_class);
2a519311
JB		 590 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
591 dev->wiphy.max_scan_ssids);
18a83659
JB		 592 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
593 dev->wiphy.max_scan_ie_len);
ee688b00 594
e31b8213
JB		 595 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
596 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
597
25e47c18
JB		 598 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
599 sizeof(u32) * dev->wiphy.n_cipher_suites,
600 dev->wiphy.cipher_suites);
601
67fbb16b
SO		 602 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
603 dev->wiphy.max_num_pmkids);
604
c0692b8f
JB		 605 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
606 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
607
a7ffac95 608 if (dev->wiphy.available_antennas && dev->ops->get_antenna) {
afe0cbf8
BR		 609 u32 tx_ant = 0, rx_ant = 0;
610 int res;
611 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
612 if (!res) {
613 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
614 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
615 }
616 }
617
f59ac048
LR		 618 nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
619 if (!nl_modes)
620 goto nla_put_failure;
621
622 i = 0;
623 while (ifmodes) {
624 if (ifmodes & 1)
625 NLA_PUT_FLAG(msg, i);
626 ifmodes >>= 1;
627 i++;
628 }
629
630 nla_nest_end(msg, nl_modes);
631
ee688b00
JB		 632 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
633 if (!nl_bands)
634 goto nla_put_failure;
635
636 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
637 if (!dev->wiphy.bands[band])
638 continue;
639
640 nl_band = nla_nest_start(msg, band);
641 if (!nl_band)
642 goto nla_put_failure;
643
d51626df
JB		 644 /* add HT info */
645 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
646 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
647 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
648 &dev->wiphy.bands[band]->ht_cap.mcs);
649 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
650 dev->wiphy.bands[band]->ht_cap.cap);
651 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
652 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
653 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
654 dev->wiphy.bands[band]->ht_cap.ampdu_density);
655 }
656
ee688b00
JB		 657 /* add frequencies */
658 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
659 if (!nl_freqs)
660 goto nla_put_failure;
661
662 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
663 nl_freq = nla_nest_start(msg, i);
664 if (!nl_freq)
665 goto nla_put_failure;
666
667 chan = &dev->wiphy.bands[band]->channels[i];
5dab3b8a
LR		 668
669 if (nl80211_msg_put_channel(msg, chan))
670 goto nla_put_failure;
e2f367f2 671
ee688b00
JB		 672 nla_nest_end(msg, nl_freq);
673 }
674
675 nla_nest_end(msg, nl_freqs);
676
677 /* add bitrates */
678 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
679 if (!nl_rates)
680 goto nla_put_failure;
681
682 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
683 nl_rate = nla_nest_start(msg, i);
684 if (!nl_rate)
685 goto nla_put_failure;
686
687 rate = &dev->wiphy.bands[band]->bitrates[i];
688 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
689 rate->bitrate);
690 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
691 NLA_PUT_FLAG(msg,
692 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
693
694 nla_nest_end(msg, nl_rate);
695 }
696
697 nla_nest_end(msg, nl_rates);
698
699 nla_nest_end(msg, nl_band);
700 }
701 nla_nest_end(msg, nl_bands);
702
8fdc621d
JB		 703 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
704 if (!nl_cmds)
705 goto nla_put_failure;
706
707 i = 0;
708#define CMD(op, n) \
709 do { \
710 if (dev->ops->op) { \
711 i++; \
712 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
713 } \
714 } while (0)
715
716 CMD(add_virtual_intf, NEW_INTERFACE);
717 CMD(change_virtual_intf, SET_INTERFACE);
718 CMD(add_key, NEW_KEY);
719 CMD(add_beacon, NEW_BEACON);
720 CMD(add_station, NEW_STATION);
721 CMD(add_mpath, NEW_MPATH);
29cbe68c 722 CMD(update_mesh_params, SET_MESH_PARAMS);
8fdc621d 723 CMD(change_bss, SET_BSS);
636a5d36
JM		 724 CMD(auth, AUTHENTICATE);
725 CMD(assoc, ASSOCIATE);
726 CMD(deauth, DEAUTHENTICATE);
727 CMD(disassoc, DISASSOCIATE);
04a773ad 728 CMD(join_ibss, JOIN_IBSS);
29cbe68c 729 CMD(join_mesh, JOIN_MESH);
67fbb16b
SO		 730 CMD(set_pmksa, SET_PMKSA);
731 CMD(del_pmksa, DEL_PMKSA);
732 CMD(flush_pmksa, FLUSH_PMKSA);
9588bbd5 733 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
13ae75b1 734 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2e161f78 735 CMD(mgmt_tx, FRAME);
f7ca38df 736 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
5be83de5 737 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
463d0183
JB		 738 i++;
739 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
740 }
f444de05 741 CMD(set_channel, SET_CHANNEL);
e8347eba 742 CMD(set_wds_peer, SET_WDS_PEER);
8fdc621d
JB		 743
744#undef CMD
b23aa676 745
6829c878 746 if (dev->ops->connect || dev->ops->auth) {
b23aa676
SO		 747 i++;
748 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
749 }
750
6829c878 751 if (dev->ops->disconnect || dev->ops->deauth) {
b23aa676
SO		 752 i++;
753 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
754 }
755
8fdc621d
JB		 756 nla_nest_end(msg, nl_cmds);
757
f7ca38df
JB		 758 /* for now at least assume all drivers have it */
759 if (dev->ops->mgmt_tx)
760 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
761
2e161f78
JB		 762 if (mgmt_stypes) {
763 u16 stypes;
764 struct nlattr *nl_ftypes, *nl_ifs;
765 enum nl80211_iftype ift;
766
767 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
768 if (!nl_ifs)
769 goto nla_put_failure;
770
771 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
772 nl_ftypes = nla_nest_start(msg, ift);
773 if (!nl_ftypes)
774 goto nla_put_failure;
775 i = 0;
776 stypes = mgmt_stypes[ift].tx;
777 while (stypes) {
778 if (stypes & 1)
779 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
780 (i << 4) | IEEE80211_FTYPE_MGMT);
781 stypes >>= 1;
782 i++;
783 }
784 nla_nest_end(msg, nl_ftypes);
785 }
786
74b70a4e
JB		 787 nla_nest_end(msg, nl_ifs);
788
2e161f78
JB		 789 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
790 if (!nl_ifs)
791 goto nla_put_failure;
792
793 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
794 nl_ftypes = nla_nest_start(msg, ift);
795 if (!nl_ftypes)
796 goto nla_put_failure;
797 i = 0;
798 stypes = mgmt_stypes[ift].rx;
799 while (stypes) {
800 if (stypes & 1)
801 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
802 (i << 4) | IEEE80211_FTYPE_MGMT);
803 stypes >>= 1;
804 i++;
805 }
806 nla_nest_end(msg, nl_ftypes);
807 }
808 nla_nest_end(msg, nl_ifs);
809 }
810
55682965
JB		 811 return genlmsg_end(msg, hdr);
812
813 nla_put_failure:
bc3ed28c
TG		 814 genlmsg_cancel(msg, hdr);
815 return -EMSGSIZE;
55682965
JB		 816}
817
818static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
819{
820 int idx = 0;
821 int start = cb->args[0];
822 struct cfg80211_registered_device *dev;
823
a1794390 824 mutex_lock(&cfg80211_mutex);
79c97e97 825 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
463d0183
JB		 826 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
827 continue;
b4637271 828 if (++idx <= start)
55682965
JB		 829 continue;
830 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
831 cb->nlh->nlmsg_seq, NLM_F_MULTI,
b4637271
JV		 832 dev) < 0) {
833 idx--;
55682965 834 break;
b4637271 835 }
55682965 836 }
a1794390 837 mutex_unlock(&cfg80211_mutex);
55682965
JB		 838
839 cb->args[0] = idx;
840
841 return skb->len;
842}
843
844static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
845{
846 struct sk_buff *msg;
4c476991 847 struct cfg80211_registered_device *dev = info->user_ptr[0];
55682965 848
fd2120ca 849 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965 850 if (!msg)
4c476991 851 return -ENOMEM;
55682965 852
4c476991
JB		 853 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
854 nlmsg_free(msg);
855 return -ENOBUFS;
856 }
55682965 857
134e6375 858 return genlmsg_reply(msg, info);
55682965
JB		 859}
860
31888487
JM		 861static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
862 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
863 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
864 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
865 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
866 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
867};
868
869static int parse_txq_params(struct nlattr *tb[],
870 struct ieee80211_txq_params *txq_params)
871{
872 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
873 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
874 !tb[NL80211_TXQ_ATTR_AIFS])
875 return -EINVAL;
876
877 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
878 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
879 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
880 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
881 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
882
883 return 0;
884}
885
f444de05
JB		 886static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
887{
888 /*
889 * You can only set the channel explicitly for AP, mesh
890 * and WDS type interfaces; all others have their channel
891 * managed via their respective "establish a connection"
892 * command (connect, join, ...)
893 *
894 * Monitors are special as they are normally slaved to
895 * whatever else is going on, so they behave as though
896 * you tried setting the wiphy channel itself.
897 */
898 return !wdev ||
899 wdev->iftype == NL80211_IFTYPE_AP ||
900 wdev->iftype == NL80211_IFTYPE_WDS ||
901 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
074ac8df
JB		 902 wdev->iftype == NL80211_IFTYPE_MONITOR ||
903 wdev->iftype == NL80211_IFTYPE_P2P_GO;
f444de05
JB		 904}
905
906static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
907 struct wireless_dev *wdev,
908 struct genl_info *info)
909{
910 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
911 u32 freq;
912 int result;
913
914 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
915 return -EINVAL;
916
917 if (!nl80211_can_set_dev_channel(wdev))
918 return -EOPNOTSUPP;
919
920 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
921 channel_type = nla_get_u32(info->attrs[
922 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
923 if (channel_type != NL80211_CHAN_NO_HT &&
924 channel_type != NL80211_CHAN_HT20 &&
925 channel_type != NL80211_CHAN_HT40PLUS &&
926 channel_type != NL80211_CHAN_HT40MINUS)
927 return -EINVAL;
928 }
929
930 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
931
932 mutex_lock(&rdev->devlist_mtx);
933 if (wdev) {
934 wdev_lock(wdev);
935 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
936 wdev_unlock(wdev);
937 } else {
938 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
939 }
940 mutex_unlock(&rdev->devlist_mtx);
941
942 return result;
943}
944
945static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
946{
4c476991
JB		 947 struct cfg80211_registered_device *rdev = info->user_ptr[0];
948 struct net_device *netdev = info->user_ptr[1];
f444de05 949
4c476991 950 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
f444de05
JB		 951}
952
e8347eba
BJ		 953static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
954{
43b19952
JB		 955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
956 struct net_device *dev = info->user_ptr[1];
957 struct wireless_dev *wdev = dev->ieee80211_ptr;
388ac775 958 const u8 *bssid;
e8347eba
BJ		 959
960 if (!info->attrs[NL80211_ATTR_MAC])
961 return -EINVAL;
962
43b19952
JB		 963 if (netif_running(dev))
964 return -EBUSY;
e8347eba 965
43b19952
JB		 966 if (!rdev->ops->set_wds_peer)
967 return -EOPNOTSUPP;
e8347eba 968
43b19952
JB		 969 if (wdev->iftype != NL80211_IFTYPE_WDS)
970 return -EOPNOTSUPP;
e8347eba
BJ		 971
972 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
43b19952 973 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
e8347eba
BJ		 974}
975
976
55682965
JB		 977static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
978{
979 struct cfg80211_registered_device *rdev;
f444de05
JB		 980 struct net_device *netdev = NULL;
981 struct wireless_dev *wdev;
a1e567c8 982 int result = 0, rem_txq_params = 0;
31888487 983 struct nlattr *nl_txq_params;
b9a5f8ca
JM		 984 u32 changed;
985 u8 retry_short = 0, retry_long = 0;
986 u32 frag_threshold = 0, rts_threshold = 0;
81077e82 987 u8 coverage_class = 0;
55682965 988
f444de05
JB		 989 /*
990 * Try to find the wiphy and netdev. Normally this
991 * function shouldn't need the netdev, but this is
992 * done for backward compatibility -- previously
993 * setting the channel was done per wiphy, but now
994 * it is per netdev. Previous userland like hostapd
995 * also passed a netdev to set_wiphy, so that it is
996 * possible to let that go to the right netdev!
997 */
4bbf4d56
JB		 998 mutex_lock(&cfg80211_mutex);
999
f444de05
JB		 1000 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1001 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1002
1003 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1004 if (netdev && netdev->ieee80211_ptr) {
1005 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1006 mutex_lock(&rdev->mtx);
1007 } else
1008 netdev = NULL;
4bbf4d56
JB		 1009 }
1010
f444de05
JB		 1011 if (!netdev) {
1012 rdev = __cfg80211_rdev_from_info(info);
1013 if (IS_ERR(rdev)) {
1014 mutex_unlock(&cfg80211_mutex);
4c476991 1015 return PTR_ERR(rdev);
f444de05
JB		 1016 }
1017 wdev = NULL;
1018 netdev = NULL;
1019 result = 0;
1020
1021 mutex_lock(&rdev->mtx);
1022 } else if (netif_running(netdev) &&
1023 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1024 wdev = netdev->ieee80211_ptr;
1025 else
1026 wdev = NULL;
1027
1028 /*
1029 * end workaround code, by now the rdev is available
1030 * and locked, and wdev may or may not be NULL.
1031 */
4bbf4d56
JB		 1032
1033 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
31888487
JM		 1034 result = cfg80211_dev_rename(
1035 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
4bbf4d56
JB		 1036
1037 mutex_unlock(&cfg80211_mutex);
1038
1039 if (result)
1040 goto bad_res;
31888487
JM		 1041
1042 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1043 struct ieee80211_txq_params txq_params;
1044 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1045
1046 if (!rdev->ops->set_txq_params) {
1047 result = -EOPNOTSUPP;
1048 goto bad_res;
1049 }
1050
1051 nla_for_each_nested(nl_txq_params,
1052 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1053 rem_txq_params) {
1054 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1055 nla_data(nl_txq_params),
1056 nla_len(nl_txq_params),
1057 txq_params_policy);
1058 result = parse_txq_params(tb, &txq_params);
1059 if (result)
1060 goto bad_res;
1061
1062 result = rdev->ops->set_txq_params(&rdev->wiphy,
1063 &txq_params);
1064 if (result)
1065 goto bad_res;
1066 }
1067 }
55682965 1068
72bdcf34 1069 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
f444de05 1070 result = __nl80211_set_channel(rdev, wdev, info);
72bdcf34
JM		 1071 if (result)
1072 goto bad_res;
1073 }
1074
98d2ff8b
JO		 1075 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1076 enum nl80211_tx_power_setting type;
1077 int idx, mbm = 0;
1078
1079 if (!rdev->ops->set_tx_power) {
60ea385f 1080 result = -EOPNOTSUPP;
98d2ff8b
JO		 1081 goto bad_res;
1082 }
1083
1084 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1085 type = nla_get_u32(info->attrs[idx]);
1086
1087 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1088 (type != NL80211_TX_POWER_AUTOMATIC)) {
1089 result = -EINVAL;
1090 goto bad_res;
1091 }
1092
1093 if (type != NL80211_TX_POWER_AUTOMATIC) {
1094 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1095 mbm = nla_get_u32(info->attrs[idx]);
1096 }
1097
1098 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1099 if (result)
1100 goto bad_res;
1101 }
1102
afe0cbf8
BR		 1103 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1104 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1105 u32 tx_ant, rx_ant;
a7ffac95 1106 if (!rdev->wiphy.available_antennas || !rdev->ops->set_antenna) {
afe0cbf8
BR		 1107 result = -EOPNOTSUPP;
1108 goto bad_res;
1109 }
1110
1111 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1112 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1113
a7ffac95
BR		 1114 /* reject antenna configurations which don't match the
1115 * available antenna mask, except for the "all" mask */
1116 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas)) ||
1117 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas))) {
1118 result = -EINVAL;
1119 goto bad_res;
1120 }
1121
1122 tx_ant = tx_ant & rdev->wiphy.available_antennas;
1123 rx_ant = rx_ant & rdev->wiphy.available_antennas;
1124
afe0cbf8
BR		 1125 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1126 if (result)
1127 goto bad_res;
1128 }
1129
b9a5f8ca
JM		 1130 changed = 0;
1131
1132 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1133 retry_short = nla_get_u8(
1134 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1135 if (retry_short == 0) {
1136 result = -EINVAL;
1137 goto bad_res;
1138 }
1139 changed |= WIPHY_PARAM_RETRY_SHORT;
1140 }
1141
1142 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1143 retry_long = nla_get_u8(
1144 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1145 if (retry_long == 0) {
1146 result = -EINVAL;
1147 goto bad_res;
1148 }
1149 changed |= WIPHY_PARAM_RETRY_LONG;
1150 }
1151
1152 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1153 frag_threshold = nla_get_u32(
1154 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1155 if (frag_threshold < 256) {
1156 result = -EINVAL;
1157 goto bad_res;
1158 }
1159 if (frag_threshold != (u32) -1) {
1160 /*
1161 * Fragments (apart from the last one) are required to
1162 * have even length. Make the fragmentation code
1163 * simpler by stripping LSB should someone try to use
1164 * odd threshold value.
1165 */
1166 frag_threshold &= ~0x1;
1167 }
1168 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1169 }
1170
1171 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1172 rts_threshold = nla_get_u32(
1173 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1174 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1175 }
1176
81077e82
LT		 1177 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1178 coverage_class = nla_get_u8(
1179 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1180 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1181 }
1182
b9a5f8ca
JM		 1183 if (changed) {
1184 u8 old_retry_short, old_retry_long;
1185 u32 old_frag_threshold, old_rts_threshold;
81077e82 1186 u8 old_coverage_class;
b9a5f8ca
JM		 1187
1188 if (!rdev->ops->set_wiphy_params) {
1189 result = -EOPNOTSUPP;
1190 goto bad_res;
1191 }
1192
1193 old_retry_short = rdev->wiphy.retry_short;
1194 old_retry_long = rdev->wiphy.retry_long;
1195 old_frag_threshold = rdev->wiphy.frag_threshold;
1196 old_rts_threshold = rdev->wiphy.rts_threshold;
81077e82 1197 old_coverage_class = rdev->wiphy.coverage_class;
b9a5f8ca
JM		 1198
1199 if (changed & WIPHY_PARAM_RETRY_SHORT)
1200 rdev->wiphy.retry_short = retry_short;
1201 if (changed & WIPHY_PARAM_RETRY_LONG)
1202 rdev->wiphy.retry_long = retry_long;
1203 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1204 rdev->wiphy.frag_threshold = frag_threshold;
1205 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1206 rdev->wiphy.rts_threshold = rts_threshold;
81077e82
LT		 1207 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1208 rdev->wiphy.coverage_class = coverage_class;
b9a5f8ca
JM		 1209
1210 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1211 if (result) {
1212 rdev->wiphy.retry_short = old_retry_short;
1213 rdev->wiphy.retry_long = old_retry_long;
1214 rdev->wiphy.frag_threshold = old_frag_threshold;
1215 rdev->wiphy.rts_threshold = old_rts_threshold;
81077e82 1216 rdev->wiphy.coverage_class = old_coverage_class;
b9a5f8ca
JM		 1217 }
1218 }
72bdcf34 1219
306d6112 1220 bad_res:
4bbf4d56 1221 mutex_unlock(&rdev->mtx);
f444de05
JB		 1222 if (netdev)
1223 dev_put(netdev);
55682965
JB		 1224 return result;
1225}
1226
1227
1228static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
d726405a 1229 struct cfg80211_registered_device *rdev,
55682965
JB		 1230 struct net_device *dev)
1231{
1232 void *hdr;
1233
1234 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1235 if (!hdr)
1236 return -1;
1237
1238 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
d726405a 1239 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
55682965 1240 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
60719ffd 1241 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
f5ea9120
JB		 1242
1243 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1244 rdev->devlist_generation ^
1245 (cfg80211_rdev_list_generation << 2));
1246
55682965
JB		 1247 return genlmsg_end(msg, hdr);
1248
1249 nla_put_failure:
bc3ed28c
TG		 1250 genlmsg_cancel(msg, hdr);
1251 return -EMSGSIZE;
55682965
JB		 1252}
1253
1254static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1255{
1256 int wp_idx = 0;
1257 int if_idx = 0;
1258 int wp_start = cb->args[0];
1259 int if_start = cb->args[1];
f5ea9120 1260 struct cfg80211_registered_device *rdev;
55682965
JB		 1261 struct wireless_dev *wdev;
1262
a1794390 1263 mutex_lock(&cfg80211_mutex);
f5ea9120
JB		 1264 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1265 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
463d0183 1266 continue;
bba95fef
JB		 1267 if (wp_idx < wp_start) {
1268 wp_idx++;
55682965 1269 continue;
bba95fef 1270 }
55682965
JB		 1271 if_idx = 0;
1272
f5ea9120
JB		 1273 mutex_lock(&rdev->devlist_mtx);
1274 list_for_each_entry(wdev, &rdev->netdev_list, list) {
bba95fef
JB		 1275 if (if_idx < if_start) {
1276 if_idx++;
55682965 1277 continue;
bba95fef 1278 }
55682965
JB		 1279 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1280 cb->nlh->nlmsg_seq, NLM_F_MULTI,
f5ea9120
JB		 1281 rdev, wdev->netdev) < 0) {
1282 mutex_unlock(&rdev->devlist_mtx);
bba95fef
JB		 1283 goto out;
1284 }
1285 if_idx++;
55682965 1286 }
f5ea9120 1287 mutex_unlock(&rdev->devlist_mtx);
bba95fef
JB		 1288
1289 wp_idx++;
55682965 1290 }
bba95fef 1291 out:
a1794390 1292 mutex_unlock(&cfg80211_mutex);
55682965
JB		 1293
1294 cb->args[0] = wp_idx;
1295 cb->args[1] = if_idx;
1296
1297 return skb->len;
1298}
1299
1300static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1301{
1302 struct sk_buff *msg;
4c476991
JB		 1303 struct cfg80211_registered_device *dev = info->user_ptr[0];
1304 struct net_device *netdev = info->user_ptr[1];
55682965 1305
fd2120ca 1306 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965 1307 if (!msg)
4c476991 1308 return -ENOMEM;
55682965 1309
d726405a 1310 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
4c476991
JB		 1311 dev, netdev) < 0) {
1312 nlmsg_free(msg);
1313 return -ENOBUFS;
1314 }
55682965 1315
134e6375 1316 return genlmsg_reply(msg, info);
55682965
JB		 1317}
1318
66f7ac50
MW		 1319static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1320 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1321 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1322 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1323 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1324 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1325};
1326
1327static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1328{
1329 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1330 int flag;
1331
1332 *mntrflags = 0;
1333
1334 if (!nla)
1335 return -EINVAL;
1336
1337 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1338 nla, mntr_flags_policy))
1339 return -EINVAL;
1340
1341 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1342 if (flags[flag])
1343 *mntrflags |= (1<<flag);
1344
1345 return 0;
1346}
1347
9bc383de 1348static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
ad4bb6f8
JB		 1349 struct net_device *netdev, u8 use_4addr,
1350 enum nl80211_iftype iftype)
9bc383de 1351{
ad4bb6f8 1352 if (!use_4addr) {
f350a0a8 1353 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
ad4bb6f8 1354 return -EBUSY;
9bc383de 1355 return 0;
ad4bb6f8 1356 }
9bc383de
JB		 1357
1358 switch (iftype) {
1359 case NL80211_IFTYPE_AP_VLAN:
1360 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1361 return 0;
1362 break;
1363 case NL80211_IFTYPE_STATION:
1364 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1365 return 0;
1366 break;
1367 default:
1368 break;
1369 }
1370
1371 return -EOPNOTSUPP;
1372}
1373
55682965
JB		 1374static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1375{
4c476991 1376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2ec600d6 1377 struct vif_params params;
e36d56b6 1378 int err;
04a773ad 1379 enum nl80211_iftype otype, ntype;
4c476991 1380 struct net_device *dev = info->user_ptr[1];
92ffe055 1381 u32 _flags, *flags = NULL;
ac7f9cfa 1382 bool change = false;
55682965 1383
2ec600d6
LCC		 1384 memset(&params, 0, sizeof(params));
1385
04a773ad 1386 otype = ntype = dev->ieee80211_ptr->iftype;
55682965 1387
723b038d 1388 if (info->attrs[NL80211_ATTR_IFTYPE]) {
ac7f9cfa 1389 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
04a773ad 1390 if (otype != ntype)
ac7f9cfa 1391 change = true;
4c476991
JB		 1392 if (ntype > NL80211_IFTYPE_MAX)
1393 return -EINVAL;
723b038d
JB		 1394 }
1395
92ffe055 1396 if (info->attrs[NL80211_ATTR_MESH_ID]) {
29cbe68c
JB		 1397 struct wireless_dev *wdev = dev->ieee80211_ptr;
1398
4c476991
JB		 1399 if (ntype != NL80211_IFTYPE_MESH_POINT)
1400 return -EINVAL;
29cbe68c
JB		 1401 if (netif_running(dev))
1402 return -EBUSY;
1403
1404 wdev_lock(wdev);
1405 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1406 IEEE80211_MAX_MESH_ID_LEN);
1407 wdev->mesh_id_up_len =
1408 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1409 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1410 wdev->mesh_id_up_len);
1411 wdev_unlock(wdev);
2ec600d6
LCC		 1412 }
1413
8b787643
FF		 1414 if (info->attrs[NL80211_ATTR_4ADDR]) {
1415 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1416 change = true;
ad4bb6f8 1417 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
9bc383de 1418 if (err)
4c476991 1419 return err;
8b787643
FF		 1420 } else {
1421 params.use_4addr = -1;
1422 }
1423
92ffe055 1424 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4c476991
JB		 1425 if (ntype != NL80211_IFTYPE_MONITOR)
1426 return -EINVAL;
92ffe055
JB		 1427 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1428 &_flags);
ac7f9cfa 1429 if (err)
4c476991 1430 return err;
ac7f9cfa
JB		 1431
1432 flags = &_flags;
1433 change = true;
92ffe055 1434 }
3b85875a 1435
ac7f9cfa 1436 if (change)
3d54d255 1437 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
ac7f9cfa
JB		 1438 else
1439 err = 0;
60719ffd 1440
9bc383de
JB		 1441 if (!err && params.use_4addr != -1)
1442 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1443
55682965
JB		 1444 return err;
1445}
1446
1447static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1448{
4c476991 1449 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2ec600d6 1450 struct vif_params params;
f9e10ce4 1451 struct net_device *dev;
55682965
JB		 1452 int err;
1453 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
66f7ac50 1454 u32 flags;
55682965 1455
2ec600d6
LCC		 1456 memset(&params, 0, sizeof(params));
1457
55682965
JB		 1458 if (!info->attrs[NL80211_ATTR_IFNAME])
1459 return -EINVAL;
1460
1461 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1462 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1463 if (type > NL80211_IFTYPE_MAX)
1464 return -EINVAL;
1465 }
1466
79c97e97 1467 if (!rdev->ops->add_virtual_intf ||
4c476991
JB		 1468 !(rdev->wiphy.interface_modes & (1 << type)))
1469 return -EOPNOTSUPP;
55682965 1470
9bc383de 1471 if (info->attrs[NL80211_ATTR_4ADDR]) {
8b787643 1472 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
ad4bb6f8 1473 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
9bc383de 1474 if (err)
4c476991 1475 return err;
9bc383de 1476 }
8b787643 1477
66f7ac50
MW		 1478 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1479 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1480 &flags);
f9e10ce4 1481 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
66f7ac50 1482 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2ec600d6 1483 type, err ? NULL : &flags, &params);
f9e10ce4
JB		 1484 if (IS_ERR(dev))
1485 return PTR_ERR(dev);
2ec600d6 1486
29cbe68c
JB		 1487 if (type == NL80211_IFTYPE_MESH_POINT &&
1488 info->attrs[NL80211_ATTR_MESH_ID]) {
1489 struct wireless_dev *wdev = dev->ieee80211_ptr;
1490
1491 wdev_lock(wdev);
1492 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1493 IEEE80211_MAX_MESH_ID_LEN);
1494 wdev->mesh_id_up_len =
1495 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1496 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1497 wdev->mesh_id_up_len);
1498 wdev_unlock(wdev);
1499 }
1500
f9e10ce4 1501 return 0;
55682965
JB		 1502}
1503
1504static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1505{
4c476991
JB		 1506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1507 struct net_device *dev = info->user_ptr[1];
55682965 1508
4c476991
JB		 1509 if (!rdev->ops->del_virtual_intf)
1510 return -EOPNOTSUPP;
55682965 1511
4c476991 1512 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
55682965
JB		 1513}
1514
41ade00f
JB		 1515struct get_key_cookie {
1516 struct sk_buff *msg;
1517 int error;
b9454e83 1518 int idx;
41ade00f
JB		 1519};
1520
1521static void get_key_callback(void *c, struct key_params *params)
1522{
b9454e83 1523 struct nlattr *key;
41ade00f
JB		 1524 struct get_key_cookie *cookie = c;
1525
1526 if (params->key)
1527 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1528 params->key_len, params->key);
1529
1530 if (params->seq)
1531 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1532 params->seq_len, params->seq);
1533
1534 if (params->cipher)
1535 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1536 params->cipher);
1537
b9454e83
JB		 1538 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1539 if (!key)
1540 goto nla_put_failure;
1541
1542 if (params->key)
1543 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1544 params->key_len, params->key);
1545
1546 if (params->seq)
1547 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1548 params->seq_len, params->seq);
1549
1550 if (params->cipher)
1551 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1552 params->cipher);
1553
1554 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1555
1556 nla_nest_end(cookie->msg, key);
1557
41ade00f
JB		 1558 return;
1559 nla_put_failure:
1560 cookie->error = 1;
1561}
1562
1563static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1564{
4c476991 1565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
41ade00f 1566 int err;
4c476991 1567 struct net_device *dev = info->user_ptr[1];
41ade00f 1568 u8 key_idx = 0;
e31b8213
JB		 1569 const u8 *mac_addr = NULL;
1570 bool pairwise;
41ade00f
JB		 1571 struct get_key_cookie cookie = {
1572 .error = 0,
1573 };
1574 void *hdr;
1575 struct sk_buff *msg;
1576
1577 if (info->attrs[NL80211_ATTR_KEY_IDX])
1578 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1579
3cfcf6ac 1580 if (key_idx > 5)
41ade00f
JB		 1581 return -EINVAL;
1582
1583 if (info->attrs[NL80211_ATTR_MAC])
1584 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1585
e31b8213
JB		 1586 pairwise = !!mac_addr;
1587 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1588 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1589 if (kt >= NUM_NL80211_KEYTYPES)
1590 return -EINVAL;
1591 if (kt != NL80211_KEYTYPE_GROUP &&
1592 kt != NL80211_KEYTYPE_PAIRWISE)
1593 return -EINVAL;
1594 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1595 }
1596
4c476991
JB		 1597 if (!rdev->ops->get_key)
1598 return -EOPNOTSUPP;
41ade00f 1599
fd2120ca 1600 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4c476991
JB		 1601 if (!msg)
1602 return -ENOMEM;
41ade00f
JB		 1603
1604 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1605 NL80211_CMD_NEW_KEY);
4c476991
JB		 1606 if (IS_ERR(hdr))
1607 return PTR_ERR(hdr);
41ade00f
JB		 1608
1609 cookie.msg = msg;
b9454e83 1610 cookie.idx = key_idx;
41ade00f
JB		 1611
1612 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1613 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1614 if (mac_addr)
1615 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1616
e31b8213
JB		 1617 if (pairwise && mac_addr &&
1618 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1619 return -ENOENT;
1620
1621 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1622 mac_addr, &cookie, get_key_callback);
41ade00f
JB		 1623
1624 if (err)
6c95e2a2 1625 goto free_msg;
41ade00f
JB		 1626
1627 if (cookie.error)
1628 goto nla_put_failure;
1629
1630 genlmsg_end(msg, hdr);
4c476991 1631 return genlmsg_reply(msg, info);
41ade00f
JB		 1632
1633 nla_put_failure:
1634 err = -ENOBUFS;
6c95e2a2 1635 free_msg:
41ade00f 1636 nlmsg_free(msg);
41ade00f
JB		 1637 return err;
1638}
1639
1640static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1641{
4c476991 1642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
b9454e83 1643 struct key_parse key;
41ade00f 1644 int err;
4c476991 1645 struct net_device *dev = info->user_ptr[1];
41ade00f 1646
b9454e83
JB		 1647 err = nl80211_parse_key(info, &key);
1648 if (err)
1649 return err;
41ade00f 1650
b9454e83 1651 if (key.idx < 0)
41ade00f
JB		 1652 return -EINVAL;
1653
b9454e83
JB		 1654 /* only support setting default key */
1655 if (!key.def && !key.defmgmt)
41ade00f
JB		 1656 return -EINVAL;
1657
dbd2fd65 1658 wdev_lock(dev->ieee80211_ptr);
3cfcf6ac 1659
dbd2fd65
JB		 1660 if (key.def) {
1661 if (!rdev->ops->set_default_key) {
1662 err = -EOPNOTSUPP;
1663 goto out;
1664 }
41ade00f 1665
dbd2fd65
JB		 1666 err = nl80211_key_allowed(dev->ieee80211_ptr);
1667 if (err)
1668 goto out;
1669
1670 if (!(rdev->wiphy.flags &
1671 WIPHY_FLAG_SUPPORTS_SEPARATE_DEFAULT_KEYS)) {
1672 if (!key.def_uni || !key.def_multi) {
1673 err = -EOPNOTSUPP;
1674 goto out;
1675 }
1676 }
1677
1678 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1679 key.def_uni, key.def_multi);
1680
1681 if (err)
1682 goto out;
fffd0934 1683
3d23e349 1684#ifdef CONFIG_CFG80211_WEXT
dbd2fd65
JB		 1685 dev->ieee80211_ptr->wext.default_key = key.idx;
1686#endif
1687 } else {
1688 if (key.def_uni || !key.def_multi) {
1689 err = -EINVAL;
1690 goto out;
1691 }
1692
1693 if (!rdev->ops->set_default_mgmt_key) {
1694 err = -EOPNOTSUPP;
1695 goto out;
1696 }
1697
1698 err = nl80211_key_allowed(dev->ieee80211_ptr);
1699 if (err)
1700 goto out;
1701
1702 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1703 dev, key.idx);
1704 if (err)
1705 goto out;
1706
1707#ifdef CONFIG_CFG80211_WEXT
1708 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
08645126 1709#endif
dbd2fd65
JB		 1710 }
1711
1712 out:
fffd0934 1713 wdev_unlock(dev->ieee80211_ptr);
41ade00f 1714
41ade00f
JB		 1715 return err;
1716}
1717
1718static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1719{
4c476991 1720 struct cfg80211_registered_device *rdev = info->user_ptr[0];
fffd0934 1721 int err;
4c476991 1722 struct net_device *dev = info->user_ptr[1];
b9454e83 1723 struct key_parse key;
e31b8213 1724 const u8 *mac_addr = NULL;
41ade00f 1725
b9454e83
JB		 1726 err = nl80211_parse_key(info, &key);
1727 if (err)
1728 return err;
41ade00f 1729
b9454e83 1730 if (!key.p.key)
41ade00f
JB		 1731 return -EINVAL;
1732
41ade00f
JB		 1733 if (info->attrs[NL80211_ATTR_MAC])
1734 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1735
e31b8213
JB		 1736 if (key.type == -1) {
1737 if (mac_addr)
1738 key.type = NL80211_KEYTYPE_PAIRWISE;
1739 else
1740 key.type = NL80211_KEYTYPE_GROUP;
1741 }
1742
1743 /* for now */
1744 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1745 key.type != NL80211_KEYTYPE_GROUP)
1746 return -EINVAL;
1747
4c476991
JB		 1748 if (!rdev->ops->add_key)
1749 return -EOPNOTSUPP;
25e47c18 1750
e31b8213
JB		 1751 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1752 key.type == NL80211_KEYTYPE_PAIRWISE,
1753 mac_addr))
4c476991 1754 return -EINVAL;
41ade00f 1755
fffd0934
JB		 1756 wdev_lock(dev->ieee80211_ptr);
1757 err = nl80211_key_allowed(dev->ieee80211_ptr);
1758 if (!err)
1759 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
e31b8213 1760 key.type == NL80211_KEYTYPE_PAIRWISE,
fffd0934
JB		 1761 mac_addr, &key.p);
1762 wdev_unlock(dev->ieee80211_ptr);
41ade00f 1763
41ade00f
JB		 1764 return err;
1765}
1766
1767static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1768{
4c476991 1769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
41ade00f 1770 int err;
4c476991 1771 struct net_device *dev = info->user_ptr[1];
41ade00f 1772 u8 *mac_addr = NULL;
b9454e83 1773 struct key_parse key;
41ade00f 1774
b9454e83
JB		 1775 err = nl80211_parse_key(info, &key);
1776 if (err)
1777 return err;
41ade00f
JB		 1778
1779 if (info->attrs[NL80211_ATTR_MAC])
1780 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1781
e31b8213
JB		 1782 if (key.type == -1) {
1783 if (mac_addr)
1784 key.type = NL80211_KEYTYPE_PAIRWISE;
1785 else
1786 key.type = NL80211_KEYTYPE_GROUP;
1787 }
1788
1789 /* for now */
1790 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1791 key.type != NL80211_KEYTYPE_GROUP)
1792 return -EINVAL;
1793
4c476991
JB		 1794 if (!rdev->ops->del_key)
1795 return -EOPNOTSUPP;
41ade00f 1796
fffd0934
JB		 1797 wdev_lock(dev->ieee80211_ptr);
1798 err = nl80211_key_allowed(dev->ieee80211_ptr);
e31b8213
JB		 1799
1800 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1801 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1802 err = -ENOENT;
1803
fffd0934 1804 if (!err)
e31b8213
JB		 1805 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1806 key.type == NL80211_KEYTYPE_PAIRWISE,
1807 mac_addr);
41ade00f 1808
3d23e349 1809#ifdef CONFIG_CFG80211_WEXT
08645126 1810 if (!err) {
b9454e83 1811 if (key.idx == dev->ieee80211_ptr->wext.default_key)
08645126 1812 dev->ieee80211_ptr->wext.default_key = -1;
b9454e83 1813 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
08645126
JB		 1814 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1815 }
1816#endif
fffd0934 1817 wdev_unlock(dev->ieee80211_ptr);
08645126 1818
41ade00f
JB		 1819 return err;
1820}
1821
ed1b6cc7
JB		 1822static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
1823{
1824 int (*call)(struct wiphy *wiphy, struct net_device *dev,
1825 struct beacon_parameters *info);
4c476991
JB		 1826 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1827 struct net_device *dev = info->user_ptr[1];
ed1b6cc7
JB		 1828 struct beacon_parameters params;
1829 int haveinfo = 0;
1830
f4a11bb0
JB		 1831 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
1832 return -EINVAL;
1833
074ac8df 1834 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4c476991
JB		 1835 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1836 return -EOPNOTSUPP;
eec60b03 1837
ed1b6cc7
JB		 1838 switch (info->genlhdr->cmd) {
1839 case NL80211_CMD_NEW_BEACON:
1840 /* these are required for NEW_BEACON */
1841 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
1842 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4c476991
JB		 1843 !info->attrs[NL80211_ATTR_BEACON_HEAD])
1844 return -EINVAL;
ed1b6cc7 1845
79c97e97 1846 call = rdev->ops->add_beacon;
ed1b6cc7
JB		 1847 break;
1848 case NL80211_CMD_SET_BEACON:
79c97e97 1849 call = rdev->ops->set_beacon;
ed1b6cc7
JB		 1850 break;
1851 default:
1852 WARN_ON(1);
4c476991 1853 return -EOPNOTSUPP;
ed1b6cc7
JB		 1854 }
1855
4c476991
JB		 1856 if (!call)
1857 return -EOPNOTSUPP;
ed1b6cc7
JB		 1858
1859 memset(&params, 0, sizeof(params));
1860
1861 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
1862 params.interval =
1863 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
1864 haveinfo = 1;
1865 }
1866
1867 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
1868 params.dtim_period =
1869 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
1870 haveinfo = 1;
1871 }
1872
1873 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
1874 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1875 params.head_len =
1876 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
1877 haveinfo = 1;
1878 }
1879
1880 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
1881 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1882 params.tail_len =
1883 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
1884 haveinfo = 1;
1885 }
1886
4c476991
JB		 1887 if (!haveinfo)
1888 return -EINVAL;
3b85875a 1889
4c476991 1890 return call(&rdev->wiphy, dev, &params);
ed1b6cc7
JB		 1891}
1892
1893static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
1894{
4c476991
JB		 1895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1896 struct net_device *dev = info->user_ptr[1];
ed1b6cc7 1897
4c476991
JB		 1898 if (!rdev->ops->del_beacon)
1899 return -EOPNOTSUPP;
ed1b6cc7 1900
074ac8df 1901 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4c476991
JB		 1902 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
1903 return -EOPNOTSUPP;
3b85875a 1904
4c476991 1905 return rdev->ops->del_beacon(&rdev->wiphy, dev);
ed1b6cc7
JB		 1906}
1907
5727ef1b
JB		 1908static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
1909 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
1910 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
1911 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
0e46724a 1912 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5727ef1b
JB		 1913};
1914
eccb8e8f
JB		 1915static int parse_station_flags(struct genl_info *info,
1916 struct station_parameters *params)
5727ef1b
JB		 1917{
1918 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
eccb8e8f 1919 struct nlattr *nla;
5727ef1b
JB		 1920 int flag;
1921
eccb8e8f
JB		 1922 /*
1923 * Try parsing the new attribute first so userspace
1924 * can specify both for older kernels.
1925 */
1926 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
1927 if (nla) {
1928 struct nl80211_sta_flag_update *sta_flags;
1929
1930 sta_flags = nla_data(nla);
1931 params->sta_flags_mask = sta_flags->mask;
1932 params->sta_flags_set = sta_flags->set;
1933 if ((params->sta_flags_mask |
1934 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
1935 return -EINVAL;
1936 return 0;
1937 }
1938
1939 /* if present, parse the old attribute */
5727ef1b 1940
eccb8e8f 1941 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5727ef1b
JB		 1942 if (!nla)
1943 return 0;
1944
1945 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
1946 nla, sta_flags_policy))
1947 return -EINVAL;
1948
eccb8e8f
JB		 1949 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
1950 params->sta_flags_mask &= ~1;
5727ef1b
JB		 1951
1952 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
1953 if (flags[flag])
eccb8e8f 1954 params->sta_flags_set |= (1<<flag);
5727ef1b
JB		 1955
1956 return 0;
1957}
1958
fd5b74dc
JB		 1959static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
1960 int flags, struct net_device *dev,
98b62183 1961 const u8 *mac_addr, struct station_info *sinfo)
fd5b74dc
JB		 1962{
1963 void *hdr;
420e7fab
HR		 1964 struct nlattr *sinfoattr, *txrate;
1965 u16 bitrate;
fd5b74dc
JB		 1966
1967 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
1968 if (!hdr)
1969 return -1;
1970
1971 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1972 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1973
f5ea9120
JB		 1974 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
1975
2ec600d6
LCC		 1976 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
1977 if (!sinfoattr)
fd5b74dc 1978 goto nla_put_failure;
2ec600d6
LCC		 1979 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
1980 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
1981 sinfo->inactive_time);
1982 if (sinfo->filled & STATION_INFO_RX_BYTES)
1983 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
1984 sinfo->rx_bytes);
1985 if (sinfo->filled & STATION_INFO_TX_BYTES)
1986 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
1987 sinfo->tx_bytes);
1988 if (sinfo->filled & STATION_INFO_LLID)
1989 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
1990 sinfo->llid);
1991 if (sinfo->filled & STATION_INFO_PLID)
1992 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
1993 sinfo->plid);
1994 if (sinfo->filled & STATION_INFO_PLINK_STATE)
1995 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
1996 sinfo->plink_state);
420e7fab
HR		 1997 if (sinfo->filled & STATION_INFO_SIGNAL)
1998 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
1999 sinfo->signal);
541a45a1
BR		 2000 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2001 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2002 sinfo->signal_avg);
420e7fab
HR		 2003 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2004 txrate = nla_nest_start(msg, NL80211_STA_INFO_TX_BITRATE);
2005 if (!txrate)
2006 goto nla_put_failure;
2007
254416aa
JL		 2008 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2009 bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
420e7fab
HR		 2010 if (bitrate > 0)
2011 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2ec600d6 2012
420e7fab
HR		 2013 if (sinfo->txrate.flags & RATE_INFO_FLAGS_MCS)
2014 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS,
2015 sinfo->txrate.mcs);
2016 if (sinfo->txrate.flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2017 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2018 if (sinfo->txrate.flags & RATE_INFO_FLAGS_SHORT_GI)
2019 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2020
2021 nla_nest_end(msg, txrate);
2022 }
98c8a60a
JM		 2023 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2024 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2025 sinfo->rx_packets);
2026 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2027 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2028 sinfo->tx_packets);
b206b4ef
BR		 2029 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2030 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2031 sinfo->tx_retries);
2032 if (sinfo->filled & STATION_INFO_TX_FAILED)
2033 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2034 sinfo->tx_failed);
2ec600d6 2035 nla_nest_end(msg, sinfoattr);
fd5b74dc
JB		 2036
2037 return genlmsg_end(msg, hdr);
2038
2039 nla_put_failure:
bc3ed28c
TG		 2040 genlmsg_cancel(msg, hdr);
2041 return -EMSGSIZE;
fd5b74dc
JB		 2042}
2043
2ec600d6 2044static int nl80211_dump_station(struct sk_buff *skb,
bba95fef 2045 struct netlink_callback *cb)
2ec600d6 2046{
2ec600d6
LCC		 2047 struct station_info sinfo;
2048 struct cfg80211_registered_device *dev;
bba95fef 2049 struct net_device *netdev;
2ec600d6 2050 u8 mac_addr[ETH_ALEN];
bba95fef 2051 int sta_idx = cb->args[1];
2ec600d6 2052 int err;
2ec600d6 2053
67748893
JB		 2054 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2055 if (err)
2056 return err;
bba95fef
JB		 2057
2058 if (!dev->ops->dump_station) {
eec60b03 2059 err = -EOPNOTSUPP;
bba95fef
JB		 2060 goto out_err;
2061 }
2062
bba95fef
JB		 2063 while (1) {
2064 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2065 mac_addr, &sinfo);
2066 if (err == -ENOENT)
2067 break;
2068 if (err)
3b85875a 2069 goto out_err;
bba95fef
JB		 2070
2071 if (nl80211_send_station(skb,
2072 NETLINK_CB(cb->skb).pid,
2073 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2074 netdev, mac_addr,
2075 &sinfo) < 0)
2076 goto out;
2077
2078 sta_idx++;
2079 }
2080
2081
2082 out:
2083 cb->args[1] = sta_idx;
2084 err = skb->len;
bba95fef 2085 out_err:
67748893 2086 nl80211_finish_netdev_dump(dev);
bba95fef
JB		 2087
2088 return err;
2ec600d6 2089}
fd5b74dc 2090
5727ef1b
JB		 2091static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2092{
4c476991
JB		 2093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2094 struct net_device *dev = info->user_ptr[1];
2ec600d6 2095 struct station_info sinfo;
fd5b74dc
JB		 2096 struct sk_buff *msg;
2097 u8 *mac_addr = NULL;
4c476991 2098 int err;
fd5b74dc 2099
2ec600d6 2100 memset(&sinfo, 0, sizeof(sinfo));
fd5b74dc
JB		 2101
2102 if (!info->attrs[NL80211_ATTR_MAC])
2103 return -EINVAL;
2104
2105 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2106
4c476991
JB		 2107 if (!rdev->ops->get_station)
2108 return -EOPNOTSUPP;
3b85875a 2109
4c476991 2110 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
fd5b74dc 2111 if (err)
4c476991 2112 return err;
2ec600d6 2113
fd2120ca 2114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
fd5b74dc 2115 if (!msg)
4c476991 2116 return -ENOMEM;
fd5b74dc
JB		 2117
2118 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
4c476991
JB		 2119 dev, mac_addr, &sinfo) < 0) {
2120 nlmsg_free(msg);
2121 return -ENOBUFS;
2122 }
3b85875a 2123
4c476991 2124 return genlmsg_reply(msg, info);
5727ef1b
JB		 2125}
2126
2127/*
c258d2de 2128 * Get vlan interface making sure it is running and on the right wiphy.
5727ef1b 2129 */
463d0183 2130static int get_vlan(struct genl_info *info,
5727ef1b
JB		 2131 struct cfg80211_registered_device *rdev,
2132 struct net_device **vlan)
2133{
463d0183 2134 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5727ef1b
JB		 2135 *vlan = NULL;
2136
2137 if (vlanattr) {
463d0183
JB		 2138 *vlan = dev_get_by_index(genl_info_net(info),
2139 nla_get_u32(vlanattr));
5727ef1b
JB		 2140 if (!*vlan)
2141 return -ENODEV;
2142 if (!(*vlan)->ieee80211_ptr)
2143 return -EINVAL;
2144 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2145 return -EINVAL;
c258d2de
FF		 2146 if (!netif_running(*vlan))
2147 return -ENETDOWN;
5727ef1b
JB		 2148 }
2149 return 0;
2150}
2151
2152static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2153{
4c476991 2154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5727ef1b 2155 int err;
4c476991 2156 struct net_device *dev = info->user_ptr[1];
5727ef1b
JB		 2157 struct station_parameters params;
2158 u8 *mac_addr = NULL;
2159
2160 memset(&params, 0, sizeof(params));
2161
2162 params.listen_interval = -1;
2163
2164 if (info->attrs[NL80211_ATTR_STA_AID])
2165 return -EINVAL;
2166
2167 if (!info->attrs[NL80211_ATTR_MAC])
2168 return -EINVAL;
2169
2170 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2171
2172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2173 params.supported_rates =
2174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2175 params.supported_rates_len =
2176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2177 }
2178
2179 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2180 params.listen_interval =
2181 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2182
36aedc90
JM		 2183 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2184 params.ht_capa =
2185 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2186
eccb8e8f 2187 if (parse_station_flags(info, &params))
5727ef1b
JB		 2188 return -EINVAL;
2189
2ec600d6
LCC		 2190 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2191 params.plink_action =
2192 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2193
463d0183 2194 err = get_vlan(info, rdev, &params.vlan);
a97f4424 2195 if (err)
034d655e 2196 goto out;
a97f4424
JB		 2197
2198 /* validate settings */
2199 err = 0;
2200
2201 switch (dev->ieee80211_ptr->iftype) {
2202 case NL80211_IFTYPE_AP:
2203 case NL80211_IFTYPE_AP_VLAN:
074ac8df 2204 case NL80211_IFTYPE_P2P_GO:
a97f4424
JB		 2205 /* disallow mesh-specific things */
2206 if (params.plink_action)
2207 err = -EINVAL;
2208 break;
074ac8df 2209 case NL80211_IFTYPE_P2P_CLIENT:
a97f4424
JB		 2210 case NL80211_IFTYPE_STATION:
2211 /* disallow everything but AUTHORIZED flag */
2212 if (params.plink_action)
2213 err = -EINVAL;
2214 if (params.vlan)
2215 err = -EINVAL;
2216 if (params.supported_rates)
2217 err = -EINVAL;
2218 if (params.ht_capa)
2219 err = -EINVAL;
2220 if (params.listen_interval >= 0)
2221 err = -EINVAL;
2222 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2223 err = -EINVAL;
2224 break;
2225 case NL80211_IFTYPE_MESH_POINT:
2226 /* disallow things mesh doesn't support */
2227 if (params.vlan)
2228 err = -EINVAL;
2229 if (params.ht_capa)
2230 err = -EINVAL;
2231 if (params.listen_interval >= 0)
2232 err = -EINVAL;
2233 if (params.supported_rates)
2234 err = -EINVAL;
2235 if (params.sta_flags_mask)
2236 err = -EINVAL;
2237 break;
2238 default:
2239 err = -EINVAL;
034d655e
JB		 2240 }
2241
5727ef1b
JB		 2242 if (err)
2243 goto out;
2244
79c97e97 2245 if (!rdev->ops->change_station) {
5727ef1b
JB		 2246 err = -EOPNOTSUPP;
2247 goto out;
2248 }
2249
79c97e97 2250 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
5727ef1b
JB		 2251
2252 out:
2253 if (params.vlan)
2254 dev_put(params.vlan);
3b85875a 2255
5727ef1b
JB		 2256 return err;
2257}
2258
2259static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2260{
4c476991 2261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5727ef1b 2262 int err;
4c476991 2263 struct net_device *dev = info->user_ptr[1];
5727ef1b
JB		 2264 struct station_parameters params;
2265 u8 *mac_addr = NULL;
2266
2267 memset(&params, 0, sizeof(params));
2268
2269 if (!info->attrs[NL80211_ATTR_MAC])
2270 return -EINVAL;
2271
5727ef1b
JB		 2272 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2273 return -EINVAL;
2274
2275 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2276 return -EINVAL;
2277
0e956c13
TLSC		 2278 if (!info->attrs[NL80211_ATTR_STA_AID])
2279 return -EINVAL;
2280
5727ef1b
JB		 2281 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2282 params.supported_rates =
2283 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2284 params.supported_rates_len =
2285 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2286 params.listen_interval =
2287 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
51b50fbe 2288
0e956c13
TLSC		 2289 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2290 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2291 return -EINVAL;
51b50fbe 2292
36aedc90
JM		 2293 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2294 params.ht_capa =
2295 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5727ef1b 2296
eccb8e8f 2297 if (parse_station_flags(info, &params))
5727ef1b
JB		 2298 return -EINVAL;
2299
0e956c13 2300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
074ac8df 2301 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4c476991
JB		 2302 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2303 return -EINVAL;
0e956c13 2304
463d0183 2305 err = get_vlan(info, rdev, &params.vlan);
a97f4424 2306 if (err)
e80cf853 2307 goto out;
a97f4424
JB		 2308
2309 /* validate settings */
2310 err = 0;
2311
79c97e97 2312 if (!rdev->ops->add_station) {
5727ef1b
JB		 2313 err = -EOPNOTSUPP;
2314 goto out;
2315 }
2316
79c97e97 2317 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
5727ef1b
JB		 2318
2319 out:
2320 if (params.vlan)
2321 dev_put(params.vlan);
5727ef1b
JB		 2322 return err;
2323}
2324
2325static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2326{
4c476991
JB		 2327 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2328 struct net_device *dev = info->user_ptr[1];
5727ef1b
JB		 2329 u8 *mac_addr = NULL;
2330
2331 if (info->attrs[NL80211_ATTR_MAC])
2332 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2333
e80cf853 2334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
d5d9de02 2335 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
074ac8df 2336 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4c476991
JB		 2337 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2338 return -EINVAL;
5727ef1b 2339
4c476991
JB		 2340 if (!rdev->ops->del_station)
2341 return -EOPNOTSUPP;
3b85875a 2342
4c476991 2343 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
5727ef1b
JB		 2344}
2345
2ec600d6
LCC		 2346static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2347 int flags, struct net_device *dev,
2348 u8 *dst, u8 *next_hop,
2349 struct mpath_info *pinfo)
2350{
2351 void *hdr;
2352 struct nlattr *pinfoattr;
2353
2354 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2355 if (!hdr)
2356 return -1;
2357
2358 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2359 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2360 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2361
f5ea9120
JB		 2362 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2363
2ec600d6
LCC		 2364 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2365 if (!pinfoattr)
2366 goto nla_put_failure;
2367 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2368 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2369 pinfo->frame_qlen);
d19b3bf6
RP		 2370 if (pinfo->filled & MPATH_INFO_SN)
2371 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2372 pinfo->sn);
2ec600d6
LCC		 2373 if (pinfo->filled & MPATH_INFO_METRIC)
2374 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2375 pinfo->metric);
2376 if (pinfo->filled & MPATH_INFO_EXPTIME)
2377 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2378 pinfo->exptime);
2379 if (pinfo->filled & MPATH_INFO_FLAGS)
2380 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2381 pinfo->flags);
2382 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2383 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2384 pinfo->discovery_timeout);
2385 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2386 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2387 pinfo->discovery_retries);
2388
2389 nla_nest_end(msg, pinfoattr);
2390
2391 return genlmsg_end(msg, hdr);
2392
2393 nla_put_failure:
bc3ed28c
TG		 2394 genlmsg_cancel(msg, hdr);
2395 return -EMSGSIZE;
2ec600d6
LCC		 2396}
2397
2398static int nl80211_dump_mpath(struct sk_buff *skb,
bba95fef 2399 struct netlink_callback *cb)
2ec600d6 2400{
2ec600d6
LCC		 2401 struct mpath_info pinfo;
2402 struct cfg80211_registered_device *dev;
bba95fef 2403 struct net_device *netdev;
2ec600d6
LCC		 2404 u8 dst[ETH_ALEN];
2405 u8 next_hop[ETH_ALEN];
bba95fef 2406 int path_idx = cb->args[1];
2ec600d6 2407 int err;
2ec600d6 2408
67748893
JB		 2409 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2410 if (err)
2411 return err;
bba95fef
JB		 2412
2413 if (!dev->ops->dump_mpath) {
eec60b03 2414 err = -EOPNOTSUPP;
bba95fef
JB		 2415 goto out_err;
2416 }
2417
eec60b03
JM		 2418 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2419 err = -EOPNOTSUPP;
0448b5fc 2420 goto out_err;
eec60b03
JM		 2421 }
2422
bba95fef
JB		 2423 while (1) {
2424 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2425 dst, next_hop, &pinfo);
2426 if (err == -ENOENT)
2ec600d6 2427 break;
bba95fef 2428 if (err)
3b85875a 2429 goto out_err;
2ec600d6 2430
bba95fef
JB		 2431 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2432 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2433 netdev, dst, next_hop,
2434 &pinfo) < 0)
2435 goto out;
2ec600d6 2436
bba95fef 2437 path_idx++;
2ec600d6 2438 }
2ec600d6 2439
2ec600d6 2440
bba95fef
JB		 2441 out:
2442 cb->args[1] = path_idx;
2443 err = skb->len;
bba95fef 2444 out_err:
67748893 2445 nl80211_finish_netdev_dump(dev);
bba95fef 2446 return err;
2ec600d6
LCC		 2447}
2448
2449static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2450{
4c476991 2451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2ec600d6 2452 int err;
4c476991 2453 struct net_device *dev = info->user_ptr[1];
2ec600d6
LCC		 2454 struct mpath_info pinfo;
2455 struct sk_buff *msg;
2456 u8 *dst = NULL;
2457 u8 next_hop[ETH_ALEN];
2458
2459 memset(&pinfo, 0, sizeof(pinfo));
2460
2461 if (!info->attrs[NL80211_ATTR_MAC])
2462 return -EINVAL;
2463
2464 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2465
4c476991
JB		 2466 if (!rdev->ops->get_mpath)
2467 return -EOPNOTSUPP;
2ec600d6 2468
4c476991
JB		 2469 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2470 return -EOPNOTSUPP;
eec60b03 2471
79c97e97 2472 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2ec600d6 2473 if (err)
4c476991 2474 return err;
2ec600d6 2475
fd2120ca 2476 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2ec600d6 2477 if (!msg)
4c476991 2478 return -ENOMEM;
2ec600d6
LCC		 2479
2480 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
4c476991
JB		 2481 dev, dst, next_hop, &pinfo) < 0) {
2482 nlmsg_free(msg);
2483 return -ENOBUFS;
2484 }
3b85875a 2485
4c476991 2486 return genlmsg_reply(msg, info);
2ec600d6
LCC		 2487}
2488
2489static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2490{
4c476991
JB		 2491 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2492 struct net_device *dev = info->user_ptr[1];
2ec600d6
LCC		 2493 u8 *dst = NULL;
2494 u8 *next_hop = NULL;
2495
2496 if (!info->attrs[NL80211_ATTR_MAC])
2497 return -EINVAL;
2498
2499 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2500 return -EINVAL;
2501
2502 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2503 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2504
4c476991
JB		 2505 if (!rdev->ops->change_mpath)
2506 return -EOPNOTSUPP;
35a8efe1 2507
4c476991
JB		 2508 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2509 return -EOPNOTSUPP;
2ec600d6 2510
4c476991 2511 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2ec600d6 2512}
4c476991 2513
2ec600d6
LCC		 2514static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2515{
4c476991
JB		 2516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2517 struct net_device *dev = info->user_ptr[1];
2ec600d6
LCC		 2518 u8 *dst = NULL;
2519 u8 *next_hop = NULL;
2520
2521 if (!info->attrs[NL80211_ATTR_MAC])
2522 return -EINVAL;
2523
2524 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2525 return -EINVAL;
2526
2527 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2528 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2529
4c476991
JB		 2530 if (!rdev->ops->add_mpath)
2531 return -EOPNOTSUPP;
35a8efe1 2532
4c476991
JB		 2533 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2534 return -EOPNOTSUPP;
2ec600d6 2535
4c476991 2536 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2ec600d6
LCC		 2537}
2538
2539static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2540{
4c476991
JB		 2541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2542 struct net_device *dev = info->user_ptr[1];
2ec600d6
LCC		 2543 u8 *dst = NULL;
2544
2545 if (info->attrs[NL80211_ATTR_MAC])
2546 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2547
4c476991
JB		 2548 if (!rdev->ops->del_mpath)
2549 return -EOPNOTSUPP;
3b85875a 2550
4c476991 2551 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2ec600d6
LCC		 2552}
2553
9f1ba906
JM		 2554static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2555{
4c476991
JB		 2556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2557 struct net_device *dev = info->user_ptr[1];
9f1ba906
JM		 2558 struct bss_parameters params;
2559
2560 memset(&params, 0, sizeof(params));
2561 /* default to not changing parameters */
2562 params.use_cts_prot = -1;
2563 params.use_short_preamble = -1;
2564 params.use_short_slot_time = -1;
fd8aaaf3 2565 params.ap_isolate = -1;
50b12f59 2566 params.ht_opmode = -1;
9f1ba906
JM		 2567
2568 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2569 params.use_cts_prot =
2570 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2571 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2572 params.use_short_preamble =
2573 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2574 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2575 params.use_short_slot_time =
2576 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
90c97a04
JM		 2577 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2578 params.basic_rates =
2579 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2580 params.basic_rates_len =
2581 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2582 }
fd8aaaf3
FF		 2583 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2584 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
50b12f59
HS		 2585 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2586 params.ht_opmode =
2587 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
9f1ba906 2588
4c476991
JB		 2589 if (!rdev->ops->change_bss)
2590 return -EOPNOTSUPP;
9f1ba906 2591
074ac8df 2592 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4c476991
JB		 2593 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2594 return -EOPNOTSUPP;
3b85875a 2595
4c476991 2596 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
9f1ba906
JM		 2597}
2598
b54452b0 2599static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
b2e1b302
LR		 2600 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2601 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2602 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2603 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2604 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2605 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2606};
2607
2608static int parse_reg_rule(struct nlattr *tb[],
2609 struct ieee80211_reg_rule *reg_rule)
2610{
2611 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2612 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2613
2614 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2615 return -EINVAL;
2616 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2617 return -EINVAL;
2618 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2619 return -EINVAL;
2620 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2621 return -EINVAL;
2622 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2623 return -EINVAL;
2624
2625 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2626
2627 freq_range->start_freq_khz =
2628 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2629 freq_range->end_freq_khz =
2630 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2631 freq_range->max_bandwidth_khz =
2632 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2633
2634 power_rule->max_eirp =
2635 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2636
2637 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2638 power_rule->max_antenna_gain =
2639 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2640
2641 return 0;
2642}
2643
2644static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2645{
2646 int r;
2647 char *data = NULL;
2648
80778f18
LR		 2649 /*
2650 * You should only get this when cfg80211 hasn't yet initialized
2651 * completely when built-in to the kernel right between the time
2652 * window between nl80211_init() and regulatory_init(), if that is
2653 * even possible.
2654 */
2655 mutex_lock(&cfg80211_mutex);
2656 if (unlikely(!cfg80211_regdomain)) {
fe33eb39
LR		 2657 mutex_unlock(&cfg80211_mutex);
2658 return -EINPROGRESS;
80778f18 2659 }
fe33eb39 2660 mutex_unlock(&cfg80211_mutex);
80778f18 2661
fe33eb39
LR		 2662 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2663 return -EINVAL;
b2e1b302
LR		 2664
2665 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2666
fe33eb39
LR		 2667 r = regulatory_hint_user(data);
2668
b2e1b302
LR		 2669 return r;
2670}
2671
93da9cc1 2672static int nl80211_get_mesh_params(struct sk_buff *skb,
29cbe68c 2673 struct genl_info *info)
93da9cc1 2674{
4c476991 2675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4c476991 2676 struct net_device *dev = info->user_ptr[1];
29cbe68c
JB		 2677 struct wireless_dev *wdev = dev->ieee80211_ptr;
2678 struct mesh_config cur_params;
2679 int err = 0;
93da9cc1 2680 void *hdr;
2681 struct nlattr *pinfoattr;
2682 struct sk_buff *msg;
2683
29cbe68c
JB		 2684 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2685 return -EOPNOTSUPP;
2686
4c476991
JB		 2687 if (!rdev->ops->get_mesh_params)
2688 return -EOPNOTSUPP;
f3f92586 2689
29cbe68c
JB		 2690 wdev_lock(wdev);
2691 /* If not connected, get default parameters */
2692 if (!wdev->mesh_id_len)
2693 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
2694 else
2695 err = rdev->ops->get_mesh_params(&rdev->wiphy, dev,
2696 &cur_params);
2697 wdev_unlock(wdev);
2698
93da9cc1 2699 if (err)
4c476991 2700 return err;
93da9cc1 2701
2702 /* Draw up a netlink message to send back */
fd2120ca 2703 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4c476991
JB		 2704 if (!msg)
2705 return -ENOMEM;
93da9cc1 2706 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2707 NL80211_CMD_GET_MESH_PARAMS);
2708 if (!hdr)
2709 goto nla_put_failure;
2710 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_PARAMS);
2711 if (!pinfoattr)
2712 goto nla_put_failure;
2713 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2714 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
2715 cur_params.dot11MeshRetryTimeout);
2716 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
2717 cur_params.dot11MeshConfirmTimeout);
2718 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
2719 cur_params.dot11MeshHoldingTimeout);
2720 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
2721 cur_params.dot11MeshMaxPeerLinks);
2722 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
2723 cur_params.dot11MeshMaxRetries);
2724 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
2725 cur_params.dot11MeshTTL);
45904f21
JC		 2726 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
2727 cur_params.element_ttl);
93da9cc1 2728 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
2729 cur_params.auto_open_plinks);
2730 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2731 cur_params.dot11MeshHWMPmaxPREQretries);
2732 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
2733 cur_params.path_refresh_time);
2734 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2735 cur_params.min_discovery_timeout);
2736 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2737 cur_params.dot11MeshHWMPactivePathTimeout);
2738 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2739 cur_params.dot11MeshHWMPpreqMinInterval);
2740 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2741 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
63c5723b
RP		 2742 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
2743 cur_params.dot11MeshHWMPRootMode);
93da9cc1 2744 nla_nest_end(msg, pinfoattr);
2745 genlmsg_end(msg, hdr);
4c476991 2746 return genlmsg_reply(msg, info);
93da9cc1 2747
3b85875a 2748 nla_put_failure:
93da9cc1 2749 genlmsg_cancel(msg, hdr);
d080e275 2750 nlmsg_free(msg);
4c476991 2751 return -ENOBUFS;
93da9cc1 2752}
2753
b54452b0 2754static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
93da9cc1 2755 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
2756 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
2757 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
2758 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
2759 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
2760 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
45904f21 2761 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
93da9cc1 2762 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
2763
2764 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
2765 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
2766 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
2767 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
2768 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
2769 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
2770};
2771
bd90fdcc
JB		 2772static int nl80211_parse_mesh_params(struct genl_info *info,
2773 struct mesh_config *cfg,
2774 u32 *mask_out)
93da9cc1 2775{
93da9cc1 2776 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
bd90fdcc 2777 u32 mask = 0;
93da9cc1 2778
bd90fdcc
JB		 2779#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
2780do {\
2781 if (table[attr_num]) {\
2782 cfg->param = nla_fn(table[attr_num]); \
2783 mask |= (1 << (attr_num - 1)); \
2784 } \
2785} while (0);\
2786
2787
2788 if (!info->attrs[NL80211_ATTR_MESH_PARAMS])
93da9cc1 2789 return -EINVAL;
2790 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
bd90fdcc
JB		 2791 info->attrs[NL80211_ATTR_MESH_PARAMS],
2792 nl80211_meshconf_params_policy))
93da9cc1 2793 return -EINVAL;
2794
93da9cc1 2795 /* This makes sure that there aren't more than 32 mesh config
2796 * parameters (otherwise our bitfield scheme would not work.) */
2797 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
2798
2799 /* Fill in the params struct */
93da9cc1 2800 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
2801 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
2802 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
2803 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
2804 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
2805 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
2806 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
2807 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
2808 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
2809 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
2810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
2811 mask, NL80211_MESHCONF_TTL, nla_get_u8);
45904f21
JC		 2812 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
2813 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
93da9cc1 2814 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
2815 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
2816 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
2817 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
2818 nla_get_u8);
2819 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
2820 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
2821 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
2822 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
2823 nla_get_u16);
2824 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
2825 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
2826 nla_get_u32);
2827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
2828 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
2829 nla_get_u16);
2830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2831 dot11MeshHWMPnetDiameterTraversalTime,
2832 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2833 nla_get_u16);
63c5723b
RP		 2834 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
2835 dot11MeshHWMPRootMode, mask,
2836 NL80211_MESHCONF_HWMP_ROOTMODE,
2837 nla_get_u8);
93da9cc1 2838
bd90fdcc
JB		 2839 if (mask_out)
2840 *mask_out = mask;
2841 return 0;
2842
2843#undef FILL_IN_MESH_PARAM_IF_SET
2844}
2845
29cbe68c
JB		 2846static int nl80211_update_mesh_params(struct sk_buff *skb,
2847 struct genl_info *info)
bd90fdcc
JB		 2848{
2849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2850 struct net_device *dev = info->user_ptr[1];
29cbe68c 2851 struct wireless_dev *wdev = dev->ieee80211_ptr;
bd90fdcc
JB		 2852 struct mesh_config cfg;
2853 u32 mask;
2854 int err;
2855
29cbe68c
JB		 2856 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
2857 return -EOPNOTSUPP;
2858
2859 if (!rdev->ops->update_mesh_params)
bd90fdcc
JB		 2860 return -EOPNOTSUPP;
2861
2862 err = nl80211_parse_mesh_params(info, &cfg, &mask);
2863 if (err)
2864 return err;
2865
29cbe68c
JB		 2866 wdev_lock(wdev);
2867 if (!wdev->mesh_id_len)
2868 err = -ENOLINK;
2869
2870 if (!err)
2871 err = rdev->ops->update_mesh_params(&rdev->wiphy, dev,
2872 mask, &cfg);
2873
2874 wdev_unlock(wdev);
2875
2876 return err;
93da9cc1 2877}
2878
f130347c
LR		 2879static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
2880{
2881 struct sk_buff *msg;
2882 void *hdr = NULL;
2883 struct nlattr *nl_reg_rules;
2884 unsigned int i;
2885 int err = -EINVAL;
2886
a1794390 2887 mutex_lock(&cfg80211_mutex);
f130347c
LR		 2888
2889 if (!cfg80211_regdomain)
2890 goto out;
2891
fd2120ca 2892 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
f130347c
LR		 2893 if (!msg) {
2894 err = -ENOBUFS;
2895 goto out;
2896 }
2897
2898 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2899 NL80211_CMD_GET_REG);
2900 if (!hdr)
2901 goto nla_put_failure;
2902
2903 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
2904 cfg80211_regdomain->alpha2);
2905
2906 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
2907 if (!nl_reg_rules)
2908 goto nla_put_failure;
2909
2910 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
2911 struct nlattr *nl_reg_rule;
2912 const struct ieee80211_reg_rule *reg_rule;
2913 const struct ieee80211_freq_range *freq_range;
2914 const struct ieee80211_power_rule *power_rule;
2915
2916 reg_rule = &cfg80211_regdomain->reg_rules[i];
2917 freq_range = &reg_rule->freq_range;
2918 power_rule = &reg_rule->power_rule;
2919
2920 nl_reg_rule = nla_nest_start(msg, i);
2921 if (!nl_reg_rule)
2922 goto nla_put_failure;
2923
2924 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
2925 reg_rule->flags);
2926 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
2927 freq_range->start_freq_khz);
2928 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
2929 freq_range->end_freq_khz);
2930 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
2931 freq_range->max_bandwidth_khz);
2932 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
2933 power_rule->max_antenna_gain);
2934 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
2935 power_rule->max_eirp);
2936
2937 nla_nest_end(msg, nl_reg_rule);
2938 }
2939
2940 nla_nest_end(msg, nl_reg_rules);
2941
2942 genlmsg_end(msg, hdr);
134e6375 2943 err = genlmsg_reply(msg, info);
f130347c
LR		 2944 goto out;
2945
2946nla_put_failure:
2947 genlmsg_cancel(msg, hdr);
d080e275 2948 nlmsg_free(msg);
f130347c
LR		 2949 err = -EMSGSIZE;
2950out:
a1794390 2951 mutex_unlock(&cfg80211_mutex);
f130347c
LR		 2952 return err;
2953}
2954
b2e1b302
LR		 2955static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
2956{
2957 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
2958 struct nlattr *nl_reg_rule;
2959 char *alpha2 = NULL;
2960 int rem_reg_rules = 0, r = 0;
2961 u32 num_rules = 0, rule_idx = 0, size_of_regd;
2962 struct ieee80211_regdomain *rd = NULL;
2963
2964 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
2965 return -EINVAL;
2966
2967 if (!info->attrs[NL80211_ATTR_REG_RULES])
2968 return -EINVAL;
2969
2970 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
2971
2972 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
2973 rem_reg_rules) {
2974 num_rules++;
2975 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4776c6e7 2976 return -EINVAL;
b2e1b302
LR		 2977 }
2978
61405e97
LR		 2979 mutex_lock(&cfg80211_mutex);
2980
d0e18f83
LR		 2981 if (!reg_is_valid_request(alpha2)) {
2982 r = -EINVAL;
2983 goto bad_reg;
2984 }
b2e1b302
LR		 2985
2986 size_of_regd = sizeof(struct ieee80211_regdomain) +
2987 (num_rules * sizeof(struct ieee80211_reg_rule));
2988
2989 rd = kzalloc(size_of_regd, GFP_KERNEL);
d0e18f83
LR		 2990 if (!rd) {
2991 r = -ENOMEM;
2992 goto bad_reg;
2993 }
b2e1b302
LR		 2994
2995 rd->n_reg_rules = num_rules;
2996 rd->alpha2[0] = alpha2[0];
2997 rd->alpha2[1] = alpha2[1];
2998
2999 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3000 rem_reg_rules) {
3001 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3002 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3003 reg_rule_policy);
3004 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3005 if (r)
3006 goto bad_reg;
3007
3008 rule_idx++;
3009
d0e18f83
LR		 3010 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3011 r = -EINVAL;
b2e1b302 3012 goto bad_reg;
d0e18f83 3013 }
b2e1b302
LR		 3014 }
3015
3016 BUG_ON(rule_idx != num_rules);
3017
b2e1b302 3018 r = set_regdom(rd);
61405e97 3019
a1794390 3020 mutex_unlock(&cfg80211_mutex);
d0e18f83 3021
b2e1b302
LR		 3022 return r;
3023
d2372b31 3024 bad_reg:
61405e97 3025 mutex_unlock(&cfg80211_mutex);
b2e1b302 3026 kfree(rd);
d0e18f83 3027 return r;
b2e1b302
LR		 3028}
3029
83f5e2cf
JB		 3030static int validate_scan_freqs(struct nlattr *freqs)
3031{
3032 struct nlattr *attr1, *attr2;
3033 int n_channels = 0, tmp1, tmp2;
3034
3035 nla_for_each_nested(attr1, freqs, tmp1) {
3036 n_channels++;
3037 /*
3038 * Some hardware has a limited channel list for
3039 * scanning, and it is pretty much nonsensical
3040 * to scan for a channel twice, so disallow that
3041 * and don't require drivers to check that the
3042 * channel list they get isn't longer than what
3043 * they can scan, as long as they can scan all
3044 * the channels they registered at once.
3045 */
3046 nla_for_each_nested(attr2, freqs, tmp2)
3047 if (attr1 != attr2 &&
3048 nla_get_u32(attr1) == nla_get_u32(attr2))
3049 return 0;
3050 }
3051
3052 return n_channels;
3053}
3054
2a519311
JB		 3055static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3056{
4c476991
JB		 3057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3058 struct net_device *dev = info->user_ptr[1];
2a519311
JB		 3059 struct cfg80211_scan_request *request;
3060 struct cfg80211_ssid *ssid;
3061 struct ieee80211_channel *channel;
3062 struct nlattr *attr;
3063 struct wiphy *wiphy;
83f5e2cf 3064 int err, tmp, n_ssids = 0, n_channels, i;
2a519311 3065 enum ieee80211_band band;
70692ad2 3066 size_t ie_len;
2a519311 3067
f4a11bb0
JB		 3068 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3069 return -EINVAL;
3070
79c97e97 3071 wiphy = &rdev->wiphy;
2a519311 3072
4c476991
JB		 3073 if (!rdev->ops->scan)
3074 return -EOPNOTSUPP;
2a519311 3075
4c476991
JB		 3076 if (rdev->scan_req)
3077 return -EBUSY;
2a519311
JB		 3078
3079 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
83f5e2cf
JB		 3080 n_channels = validate_scan_freqs(
3081 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4c476991
JB		 3082 if (!n_channels)
3083 return -EINVAL;
2a519311 3084 } else {
83f5e2cf
JB		 3085 n_channels = 0;
3086
2a519311
JB		 3087 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3088 if (wiphy->bands[band])
3089 n_channels += wiphy->bands[band]->n_channels;
3090 }
3091
3092 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3093 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3094 n_ssids++;
3095
4c476991
JB		 3096 if (n_ssids > wiphy->max_scan_ssids)
3097 return -EINVAL;
2a519311 3098
70692ad2
JM		 3099 if (info->attrs[NL80211_ATTR_IE])
3100 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3101 else
3102 ie_len = 0;
3103
4c476991
JB		 3104 if (ie_len > wiphy->max_scan_ie_len)
3105 return -EINVAL;
18a83659 3106
2a519311
JB		 3107 request = kzalloc(sizeof(*request)
3108 + sizeof(*ssid) * n_ssids
70692ad2
JM		 3109 + sizeof(channel) * n_channels
3110 + ie_len, GFP_KERNEL);
4c476991
JB		 3111 if (!request)
3112 return -ENOMEM;
2a519311 3113
2a519311 3114 if (n_ssids)
5ba63533 3115 request->ssids = (void *)&request->channels[n_channels];
2a519311 3116 request->n_ssids = n_ssids;
70692ad2
JM		 3117 if (ie_len) {
3118 if (request->ssids)
3119 request->ie = (void *)(request->ssids + n_ssids);
3120 else
3121 request->ie = (void *)(request->channels + n_channels);
3122 }
2a519311 3123
584991dc 3124 i = 0;
2a519311
JB		 3125 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3126 /* user specified, bail out if channel not found */
2a519311 3127 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
584991dc
JB		 3128 struct ieee80211_channel *chan;
3129
3130 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3131
3132 if (!chan) {
2a519311
JB		 3133 err = -EINVAL;
3134 goto out_free;
3135 }
584991dc
JB		 3136
3137 /* ignore disabled channels */
3138 if (chan->flags & IEEE80211_CHAN_DISABLED)
3139 continue;
3140
3141 request->channels[i] = chan;
2a519311
JB		 3142 i++;
3143 }
3144 } else {
3145 /* all channels */
2a519311
JB		 3146 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3147 int j;
3148 if (!wiphy->bands[band])
3149 continue;
3150 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
584991dc
JB		 3151 struct ieee80211_channel *chan;
3152
3153 chan = &wiphy->bands[band]->channels[j];
3154
3155 if (chan->flags & IEEE80211_CHAN_DISABLED)
3156 continue;
3157
3158 request->channels[i] = chan;
2a519311
JB		 3159 i++;
3160 }
3161 }
3162 }
3163
584991dc
JB		 3164 if (!i) {
3165 err = -EINVAL;
3166 goto out_free;
3167 }
3168
3169 request->n_channels = i;
3170
2a519311
JB		 3171 i = 0;
3172 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3173 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3174 if (request->ssids[i].ssid_len > IEEE80211_MAX_SSID_LEN) {
3175 err = -EINVAL;
3176 goto out_free;
3177 }
3178 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3179 request->ssids[i].ssid_len = nla_len(attr);
3180 i++;
3181 }
3182 }
3183
70692ad2
JM		 3184 if (info->attrs[NL80211_ATTR_IE]) {
3185 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
de95a54b
JB		 3186 memcpy((void *)request->ie,
3187 nla_data(info->attrs[NL80211_ATTR_IE]),
70692ad2
JM		 3188 request->ie_len);
3189 }
3190
463d0183 3191 request->dev = dev;
79c97e97 3192 request->wiphy = &rdev->wiphy;
2a519311 3193
79c97e97
JB		 3194 rdev->scan_req = request;
3195 err = rdev->ops->scan(&rdev->wiphy, dev, request);
2a519311 3196
463d0183 3197 if (!err) {
79c97e97 3198 nl80211_send_scan_start(rdev, dev);
463d0183 3199 dev_hold(dev);
4c476991 3200 } else {
2a519311 3201 out_free:
79c97e97 3202 rdev->scan_req = NULL;
2a519311
JB		 3203 kfree(request);
3204 }
3b85875a 3205
2a519311
JB		 3206 return err;
3207}
3208
3209static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
3210 struct cfg80211_registered_device *rdev,
48ab905d
JB		 3211 struct wireless_dev *wdev,
3212 struct cfg80211_internal_bss *intbss)
2a519311 3213{
48ab905d 3214 struct cfg80211_bss *res = &intbss->pub;
2a519311
JB		 3215 void *hdr;
3216 struct nlattr *bss;
48ab905d
JB		 3217 int i;
3218
3219 ASSERT_WDEV_LOCK(wdev);
2a519311
JB		 3220
3221 hdr = nl80211hdr_put(msg, pid, seq, flags,
3222 NL80211_CMD_NEW_SCAN_RESULTS);
3223 if (!hdr)
3224 return -1;
3225
f5ea9120 3226 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
48ab905d 3227 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
2a519311
JB		 3228
3229 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3230 if (!bss)
3231 goto nla_put_failure;
3232 if (!is_zero_ether_addr(res->bssid))
3233 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3234 if (res->information_elements && res->len_information_elements)
3235 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3236 res->len_information_elements,
3237 res->information_elements);
34a6eddb
JM		 3238 if (res->beacon_ies && res->len_beacon_ies &&
3239 res->beacon_ies != res->information_elements)
3240 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3241 res->len_beacon_ies, res->beacon_ies);
2a519311
JB		 3242 if (res->tsf)
3243 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3244 if (res->beacon_interval)
3245 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3246 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3247 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
7c89606e
HS		 3248 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3249 jiffies_to_msecs(jiffies - intbss->ts));
2a519311 3250
77965c97 3251 switch (rdev->wiphy.signal_type) {
2a519311
JB		 3252 case CFG80211_SIGNAL_TYPE_MBM:
3253 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3254 break;
3255 case CFG80211_SIGNAL_TYPE_UNSPEC:
3256 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3257 break;
3258 default:
3259 break;
3260 }
3261
48ab905d 3262 switch (wdev->iftype) {
074ac8df 3263 case NL80211_IFTYPE_P2P_CLIENT:
48ab905d
JB		 3264 case NL80211_IFTYPE_STATION:
3265 if (intbss == wdev->current_bss)
3266 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3267 NL80211_BSS_STATUS_ASSOCIATED);
3268 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3269 if (intbss != wdev->auth_bsses[i])
3270 continue;
3271 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3272 NL80211_BSS_STATUS_AUTHENTICATED);
3273 break;
3274 }
3275 break;
3276 case NL80211_IFTYPE_ADHOC:
3277 if (intbss == wdev->current_bss)
3278 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3279 NL80211_BSS_STATUS_IBSS_JOINED);
3280 break;
3281 default:
3282 break;
3283 }
3284
2a519311
JB		 3285 nla_nest_end(msg, bss);
3286
3287 return genlmsg_end(msg, hdr);
3288
3289 nla_put_failure:
3290 genlmsg_cancel(msg, hdr);
3291 return -EMSGSIZE;
3292}
3293
3294static int nl80211_dump_scan(struct sk_buff *skb,
3295 struct netlink_callback *cb)
3296{
48ab905d
JB		 3297 struct cfg80211_registered_device *rdev;
3298 struct net_device *dev;
2a519311 3299 struct cfg80211_internal_bss *scan;
48ab905d 3300 struct wireless_dev *wdev;
2a519311
JB		 3301 int start = cb->args[1], idx = 0;
3302 int err;
3303
67748893
JB		 3304 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3305 if (err)
3306 return err;
2a519311 3307
48ab905d 3308 wdev = dev->ieee80211_ptr;
2a519311 3309
48ab905d
JB		 3310 wdev_lock(wdev);
3311 spin_lock_bh(&rdev->bss_lock);
3312 cfg80211_bss_expire(rdev);
3313
3314 list_for_each_entry(scan, &rdev->bss_list, list) {
2a519311
JB		 3315 if (++idx <= start)
3316 continue;
3317 if (nl80211_send_bss(skb,
3318 NETLINK_CB(cb->skb).pid,
3319 cb->nlh->nlmsg_seq, NLM_F_MULTI,
48ab905d 3320 rdev, wdev, scan) < 0) {
2a519311 3321 idx--;
67748893 3322 break;
2a519311
JB		 3323 }
3324 }
3325
48ab905d
JB		 3326 spin_unlock_bh(&rdev->bss_lock);
3327 wdev_unlock(wdev);
2a519311
JB		 3328
3329 cb->args[1] = idx;
67748893 3330 nl80211_finish_netdev_dump(rdev);
2a519311 3331
67748893 3332 return skb->len;
2a519311
JB		 3333}
3334
61fa713c
HS		 3335static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
3336 int flags, struct net_device *dev,
3337 struct survey_info *survey)
3338{
3339 void *hdr;
3340 struct nlattr *infoattr;
3341
3342 /* Survey without a channel doesn't make sense */
3343 if (!survey->channel)
3344 return -EINVAL;
3345
3346 hdr = nl80211hdr_put(msg, pid, seq, flags,
3347 NL80211_CMD_NEW_SURVEY_RESULTS);
3348 if (!hdr)
3349 return -ENOMEM;
3350
3351 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3352
3353 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
3354 if (!infoattr)
3355 goto nla_put_failure;
3356
3357 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
3358 survey->channel->center_freq);
3359 if (survey->filled & SURVEY_INFO_NOISE_DBM)
3360 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
3361 survey->noise);
17e5a808
FF		 3362 if (survey->filled & SURVEY_INFO_IN_USE)
3363 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
8610c29a
FF		 3364 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
3365 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
3366 survey->channel_time);
3367 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
3368 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
3369 survey->channel_time_busy);
3370 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
3371 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
3372 survey->channel_time_ext_busy);
3373 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
3374 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
3375 survey->channel_time_rx);
3376 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
3377 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
3378 survey->channel_time_tx);
61fa713c
HS		 3379
3380 nla_nest_end(msg, infoattr);
3381
3382 return genlmsg_end(msg, hdr);
3383
3384 nla_put_failure:
3385 genlmsg_cancel(msg, hdr);
3386 return -EMSGSIZE;
3387}
3388
3389static int nl80211_dump_survey(struct sk_buff *skb,
3390 struct netlink_callback *cb)
3391{
3392 struct survey_info survey;
3393 struct cfg80211_registered_device *dev;
3394 struct net_device *netdev;
61fa713c
HS		 3395 int survey_idx = cb->args[1];
3396 int res;
3397
67748893
JB		 3398 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3399 if (res)
3400 return res;
61fa713c
HS		 3401
3402 if (!dev->ops->dump_survey) {
3403 res = -EOPNOTSUPP;
3404 goto out_err;
3405 }
3406
3407 while (1) {
3408 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
3409 &survey);
3410 if (res == -ENOENT)
3411 break;
3412 if (res)
3413 goto out_err;
3414
3415 if (nl80211_send_survey(skb,
3416 NETLINK_CB(cb->skb).pid,
3417 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3418 netdev,
3419 &survey) < 0)
3420 goto out;
3421 survey_idx++;
3422 }
3423
3424 out:
3425 cb->args[1] = survey_idx;
3426 res = skb->len;
3427 out_err:
67748893 3428 nl80211_finish_netdev_dump(dev);
61fa713c
HS		 3429 return res;
3430}
3431
255e737e
JM		 3432static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
3433{
b23aa676
SO		 3434 return auth_type <= NL80211_AUTHTYPE_MAX;
3435}
3436
3437static bool nl80211_valid_wpa_versions(u32 wpa_versions)
3438{
3439 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
3440 NL80211_WPA_VERSION_2));
3441}
3442
3443static bool nl80211_valid_akm_suite(u32 akm)
3444{
3445 return akm == WLAN_AKM_SUITE_8021X ||
3446 akm == WLAN_AKM_SUITE_PSK;
3447}
3448
3449static bool nl80211_valid_cipher_suite(u32 cipher)
3450{
3451 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
3452 cipher == WLAN_CIPHER_SUITE_WEP104 ||
3453 cipher == WLAN_CIPHER_SUITE_TKIP ||
3454 cipher == WLAN_CIPHER_SUITE_CCMP ||
3455 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
255e737e
JM		 3456}
3457
b23aa676 3458
636a5d36
JM		 3459static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
3460{
4c476991
JB		 3461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3462 struct net_device *dev = info->user_ptr[1];
19957bb3
JB		 3463 struct ieee80211_channel *chan;
3464 const u8 *bssid, *ssid, *ie = NULL;
3465 int err, ssid_len, ie_len = 0;
3466 enum nl80211_auth_type auth_type;
fffd0934 3467 struct key_parse key;
d5cdfacb 3468 bool local_state_change;
636a5d36 3469
f4a11bb0
JB		 3470 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3471 return -EINVAL;
3472
3473 if (!info->attrs[NL80211_ATTR_MAC])
3474 return -EINVAL;
3475
1778092e
JM		 3476 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
3477 return -EINVAL;
3478
19957bb3
JB		 3479 if (!info->attrs[NL80211_ATTR_SSID])
3480 return -EINVAL;
3481
3482 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
3483 return -EINVAL;
3484
fffd0934
JB		 3485 err = nl80211_parse_key(info, &key);
3486 if (err)
3487 return err;
3488
3489 if (key.idx >= 0) {
e31b8213
JB		 3490 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
3491 return -EINVAL;
fffd0934
JB		 3492 if (!key.p.key || !key.p.key_len)
3493 return -EINVAL;
3494 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
3495 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
3496 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
3497 key.p.key_len != WLAN_KEY_LEN_WEP104))
3498 return -EINVAL;
3499 if (key.idx > 4)
3500 return -EINVAL;
3501 } else {
3502 key.p.key_len = 0;
3503 key.p.key = NULL;
3504 }
3505
afea0b7a
JB		 3506 if (key.idx >= 0) {
3507 int i;
3508 bool ok = false;
3509 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
3510 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
3511 ok = true;
3512 break;
3513 }
3514 }
4c476991
JB		 3515 if (!ok)
3516 return -EINVAL;
afea0b7a
JB		 3517 }
3518
4c476991
JB		 3519 if (!rdev->ops->auth)
3520 return -EOPNOTSUPP;
636a5d36 3521
074ac8df 3522 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 3523 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3524 return -EOPNOTSUPP;
eec60b03 3525
19957bb3 3526 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
79c97e97 3527 chan = ieee80211_get_channel(&rdev->wiphy,
19957bb3 3528 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4c476991
JB		 3529 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3530 return -EINVAL;
636a5d36 3531
19957bb3
JB		 3532 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3533 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
636a5d36
JM		 3534
3535 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3536 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3537 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3538 }
3539
19957bb3 3540 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4c476991
JB		 3541 if (!nl80211_valid_auth_type(auth_type))
3542 return -EINVAL;
636a5d36 3543
d5cdfacb
JM		 3544 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3545
4c476991
JB		 3546 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
3547 ssid, ssid_len, ie, ie_len,
3548 key.p.key, key.p.key_len, key.idx,
3549 local_state_change);
636a5d36
JM		 3550}
3551
c0692b8f
JB		 3552static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
3553 struct genl_info *info,
3dc27d25
JB		 3554 struct cfg80211_crypto_settings *settings,
3555 int cipher_limit)
b23aa676 3556{
c0b2bbd8
JB		 3557 memset(settings, 0, sizeof(*settings));
3558
b23aa676
SO		 3559 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
3560
c0692b8f
JB		 3561 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
3562 u16 proto;
3563 proto = nla_get_u16(
3564 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
3565 settings->control_port_ethertype = cpu_to_be16(proto);
3566 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
3567 proto != ETH_P_PAE)
3568 return -EINVAL;
3569 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
3570 settings->control_port_no_encrypt = true;
3571 } else
3572 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
3573
b23aa676
SO		 3574 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
3575 void *data;
3576 int len, i;
3577
3578 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3579 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
3580 settings->n_ciphers_pairwise = len / sizeof(u32);
3581
3582 if (len % sizeof(u32))
3583 return -EINVAL;
3584
3dc27d25 3585 if (settings->n_ciphers_pairwise > cipher_limit)
b23aa676
SO		 3586 return -EINVAL;
3587
3588 memcpy(settings->ciphers_pairwise, data, len);
3589
3590 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3591 if (!nl80211_valid_cipher_suite(
3592 settings->ciphers_pairwise[i]))
3593 return -EINVAL;
3594 }
3595
3596 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
3597 settings->cipher_group =
3598 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
3599 if (!nl80211_valid_cipher_suite(settings->cipher_group))
3600 return -EINVAL;
3601 }
3602
3603 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
3604 settings->wpa_versions =
3605 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
3606 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
3607 return -EINVAL;
3608 }
3609
3610 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
3611 void *data;
3612 int len, i;
3613
3614 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
3615 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
3616 settings->n_akm_suites = len / sizeof(u32);
3617
3618 if (len % sizeof(u32))
3619 return -EINVAL;
3620
3621 memcpy(settings->akm_suites, data, len);
3622
3623 for (i = 0; i < settings->n_ciphers_pairwise; i++)
3624 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
3625 return -EINVAL;
3626 }
3627
3628 return 0;
3629}
3630
636a5d36
JM		 3631static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
3632{
4c476991
JB		 3633 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3634 struct net_device *dev = info->user_ptr[1];
19957bb3 3635 struct cfg80211_crypto_settings crypto;
f444de05 3636 struct ieee80211_channel *chan;
3e5d7649 3637 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
19957bb3
JB		 3638 int err, ssid_len, ie_len = 0;
3639 bool use_mfp = false;
636a5d36 3640
f4a11bb0
JB		 3641 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3642 return -EINVAL;
3643
3644 if (!info->attrs[NL80211_ATTR_MAC] ||
19957bb3
JB		 3645 !info->attrs[NL80211_ATTR_SSID] ||
3646 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
f4a11bb0
JB		 3647 return -EINVAL;
3648
4c476991
JB		 3649 if (!rdev->ops->assoc)
3650 return -EOPNOTSUPP;
636a5d36 3651
074ac8df 3652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 3653 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3654 return -EOPNOTSUPP;
eec60b03 3655
19957bb3 3656 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3657
19957bb3
JB		 3658 chan = ieee80211_get_channel(&rdev->wiphy,
3659 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4c476991
JB		 3660 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
3661 return -EINVAL;
636a5d36 3662
19957bb3
JB		 3663 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3664 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
636a5d36
JM		 3665
3666 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3667 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3668 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3669 }
3670
dc6382ce 3671 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4f5dadce 3672 enum nl80211_mfp mfp =
dc6382ce 3673 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4f5dadce 3674 if (mfp == NL80211_MFP_REQUIRED)
19957bb3 3675 use_mfp = true;
4c476991
JB		 3676 else if (mfp != NL80211_MFP_NO)
3677 return -EINVAL;
dc6382ce
JM		 3678 }
3679
3e5d7649
JB		 3680 if (info->attrs[NL80211_ATTR_PREV_BSSID])
3681 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
3682
c0692b8f 3683 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
b23aa676 3684 if (!err)
3e5d7649
JB		 3685 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
3686 ssid, ssid_len, ie, ie_len, use_mfp,
19957bb3 3687 &crypto);
636a5d36 3688
636a5d36
JM		 3689 return err;
3690}
3691
3692static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
3693{
4c476991
JB		 3694 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3695 struct net_device *dev = info->user_ptr[1];
19957bb3 3696 const u8 *ie = NULL, *bssid;
4c476991 3697 int ie_len = 0;
19957bb3 3698 u16 reason_code;
d5cdfacb 3699 bool local_state_change;
636a5d36 3700
f4a11bb0
JB		 3701 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3702 return -EINVAL;
3703
3704 if (!info->attrs[NL80211_ATTR_MAC])
3705 return -EINVAL;
3706
3707 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3708 return -EINVAL;
3709
4c476991
JB		 3710 if (!rdev->ops->deauth)
3711 return -EOPNOTSUPP;
636a5d36 3712
074ac8df 3713 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 3714 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3715 return -EOPNOTSUPP;
eec60b03 3716
19957bb3 3717 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3718
19957bb3
JB		 3719 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3720 if (reason_code == 0) {
f4a11bb0 3721 /* Reason Code 0 is reserved */
4c476991 3722 return -EINVAL;
255e737e 3723 }
636a5d36
JM		 3724
3725 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3726 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3727 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3728 }
3729
d5cdfacb
JM		 3730 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3731
4c476991
JB		 3732 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
3733 local_state_change);
636a5d36
JM		 3734}
3735
3736static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
3737{
4c476991
JB		 3738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3739 struct net_device *dev = info->user_ptr[1];
19957bb3 3740 const u8 *ie = NULL, *bssid;
4c476991 3741 int ie_len = 0;
19957bb3 3742 u16 reason_code;
d5cdfacb 3743 bool local_state_change;
636a5d36 3744
f4a11bb0
JB		 3745 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3746 return -EINVAL;
3747
3748 if (!info->attrs[NL80211_ATTR_MAC])
3749 return -EINVAL;
3750
3751 if (!info->attrs[NL80211_ATTR_REASON_CODE])
3752 return -EINVAL;
3753
4c476991
JB		 3754 if (!rdev->ops->disassoc)
3755 return -EOPNOTSUPP;
636a5d36 3756
074ac8df 3757 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 3758 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
3759 return -EOPNOTSUPP;
eec60b03 3760
19957bb3 3761 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
636a5d36 3762
19957bb3
JB		 3763 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
3764 if (reason_code == 0) {
f4a11bb0 3765 /* Reason Code 0 is reserved */
4c476991 3766 return -EINVAL;
255e737e 3767 }
636a5d36
JM		 3768
3769 if (info->attrs[NL80211_ATTR_IE]) {
19957bb3
JB		 3770 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
636a5d36
JM		 3772 }
3773
d5cdfacb
JM		 3774 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
3775
4c476991
JB		 3776 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
3777 local_state_change);
636a5d36
JM		 3778}
3779
dd5b4cc7
FF		 3780static bool
3781nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
3782 int mcast_rate[IEEE80211_NUM_BANDS],
3783 int rateval)
3784{
3785 struct wiphy *wiphy = &rdev->wiphy;
3786 bool found = false;
3787 int band, i;
3788
3789 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3790 struct ieee80211_supported_band *sband;
3791
3792 sband = wiphy->bands[band];
3793 if (!sband)
3794 continue;
3795
3796 for (i = 0; i < sband->n_bitrates; i++) {
3797 if (sband->bitrates[i].bitrate == rateval) {
3798 mcast_rate[band] = i + 1;
3799 found = true;
3800 break;
3801 }
3802 }
3803 }
3804
3805 return found;
3806}
3807
04a773ad
JB		 3808static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
3809{
4c476991
JB		 3810 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3811 struct net_device *dev = info->user_ptr[1];
04a773ad
JB		 3812 struct cfg80211_ibss_params ibss;
3813 struct wiphy *wiphy;
fffd0934 3814 struct cfg80211_cached_keys *connkeys = NULL;
04a773ad
JB		 3815 int err;
3816
8e30bc55
JB		 3817 memset(&ibss, 0, sizeof(ibss));
3818
04a773ad
JB		 3819 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3820 return -EINVAL;
3821
3822 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
3823 !info->attrs[NL80211_ATTR_SSID] ||
3824 !nla_len(info->attrs[NL80211_ATTR_SSID]))
3825 return -EINVAL;
3826
8e30bc55
JB		 3827 ibss.beacon_interval = 100;
3828
3829 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
3830 ibss.beacon_interval =
3831 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3832 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
3833 return -EINVAL;
3834 }
3835
4c476991
JB		 3836 if (!rdev->ops->join_ibss)
3837 return -EOPNOTSUPP;
04a773ad 3838
4c476991
JB		 3839 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3840 return -EOPNOTSUPP;
04a773ad 3841
79c97e97 3842 wiphy = &rdev->wiphy;
04a773ad
JB		 3843
3844 if (info->attrs[NL80211_ATTR_MAC])
3845 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3846 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
3848
3849 if (info->attrs[NL80211_ATTR_IE]) {
3850 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
3851 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3852 }
3853
3854 ibss.channel = ieee80211_get_channel(wiphy,
3855 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3856 if (!ibss.channel ||
3857 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4c476991
JB		 3858 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
3859 return -EINVAL;
04a773ad
JB		 3860
3861 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
fffd0934
JB		 3862 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3863
fbd2c8dc
TP		 3864 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3865 u8 *rates =
3866 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3867 int n_rates =
3868 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3869 struct ieee80211_supported_band *sband =
3870 wiphy->bands[ibss.channel->band];
3871 int i, j;
3872
4c476991
JB		 3873 if (n_rates == 0)
3874 return -EINVAL;
fbd2c8dc
TP		 3875
3876 for (i = 0; i < n_rates; i++) {
3877 int rate = (rates[i] & 0x7f) * 5;
3878 bool found = false;
3879
3880 for (j = 0; j < sband->n_bitrates; j++) {
3881 if (sband->bitrates[j].bitrate == rate) {
3882 found = true;
3883 ibss.basic_rates |= BIT(j);
3884 break;
3885 }
3886 }
4c476991
JB		 3887 if (!found)
3888 return -EINVAL;
fbd2c8dc 3889 }
fbd2c8dc 3890 }
dd5b4cc7
FF		 3891
3892 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
3893 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
3894 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
3895 return -EINVAL;
fbd2c8dc 3896
4c476991
JB		 3897 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
3898 connkeys = nl80211_parse_connkeys(rdev,
3899 info->attrs[NL80211_ATTR_KEYS]);
3900 if (IS_ERR(connkeys))
3901 return PTR_ERR(connkeys);
3902 }
04a773ad 3903
4c476991 3904 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
fffd0934
JB		 3905 if (err)
3906 kfree(connkeys);
04a773ad
JB		 3907 return err;
3908}
3909
3910static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
3911{
4c476991
JB		 3912 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3913 struct net_device *dev = info->user_ptr[1];
04a773ad 3914
4c476991
JB		 3915 if (!rdev->ops->leave_ibss)
3916 return -EOPNOTSUPP;
04a773ad 3917
4c476991
JB		 3918 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
3919 return -EOPNOTSUPP;
04a773ad 3920
4c476991 3921 return cfg80211_leave_ibss(rdev, dev, false);
04a773ad
JB		 3922}
3923
aff89a9b
JB		 3924#ifdef CONFIG_NL80211_TESTMODE
3925static struct genl_multicast_group nl80211_testmode_mcgrp = {
3926 .name = "testmode",
3927};
3928
3929static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
3930{
4c476991 3931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
aff89a9b
JB		 3932 int err;
3933
3934 if (!info->attrs[NL80211_ATTR_TESTDATA])
3935 return -EINVAL;
3936
aff89a9b
JB		 3937 err = -EOPNOTSUPP;
3938 if (rdev->ops->testmode_cmd) {
3939 rdev->testmode_info = info;
3940 err = rdev->ops->testmode_cmd(&rdev->wiphy,
3941 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
3942 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
3943 rdev->testmode_info = NULL;
3944 }
3945
aff89a9b
JB		 3946 return err;
3947}
3948
3949static struct sk_buff *
3950__cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
3951 int approxlen, u32 pid, u32 seq, gfp_t gfp)
3952{
3953 struct sk_buff *skb;
3954 void *hdr;
3955 struct nlattr *data;
3956
3957 skb = nlmsg_new(approxlen + 100, gfp);
3958 if (!skb)
3959 return NULL;
3960
3961 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
3962 if (!hdr) {
3963 kfree_skb(skb);
3964 return NULL;
3965 }
3966
3967 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
3968 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
3969
3970 ((void **)skb->cb)[0] = rdev;
3971 ((void **)skb->cb)[1] = hdr;
3972 ((void **)skb->cb)[2] = data;
3973
3974 return skb;
3975
3976 nla_put_failure:
3977 kfree_skb(skb);
3978 return NULL;
3979}
3980
3981struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
3982 int approxlen)
3983{
3984 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
3985
3986 if (WARN_ON(!rdev->testmode_info))
3987 return NULL;
3988
3989 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
3990 rdev->testmode_info->snd_pid,
3991 rdev->testmode_info->snd_seq,
3992 GFP_KERNEL);
3993}
3994EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
3995
3996int cfg80211_testmode_reply(struct sk_buff *skb)
3997{
3998 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
3999 void *hdr = ((void **)skb->cb)[1];
4000 struct nlattr *data = ((void **)skb->cb)[2];
4001
4002 if (WARN_ON(!rdev->testmode_info)) {
4003 kfree_skb(skb);
4004 return -EINVAL;
4005 }
4006
4007 nla_nest_end(skb, data);
4008 genlmsg_end(skb, hdr);
4009 return genlmsg_reply(skb, rdev->testmode_info);
4010}
4011EXPORT_SYMBOL(cfg80211_testmode_reply);
4012
4013struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4014 int approxlen, gfp_t gfp)
4015{
4016 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4017
4018 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4019}
4020EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4021
4022void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4023{
4024 void *hdr = ((void **)skb->cb)[1];
4025 struct nlattr *data = ((void **)skb->cb)[2];
4026
4027 nla_nest_end(skb, data);
4028 genlmsg_end(skb, hdr);
4029 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4030}
4031EXPORT_SYMBOL(cfg80211_testmode_event);
4032#endif
4033
b23aa676
SO		 4034static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4035{
4c476991
JB		 4036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4037 struct net_device *dev = info->user_ptr[1];
b23aa676
SO		 4038 struct cfg80211_connect_params connect;
4039 struct wiphy *wiphy;
fffd0934 4040 struct cfg80211_cached_keys *connkeys = NULL;
b23aa676
SO		 4041 int err;
4042
4043 memset(&connect, 0, sizeof(connect));
4044
4045 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4046 return -EINVAL;
4047
4048 if (!info->attrs[NL80211_ATTR_SSID] ||
4049 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4050 return -EINVAL;
4051
4052 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4053 connect.auth_type =
4054 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4055 if (!nl80211_valid_auth_type(connect.auth_type))
4056 return -EINVAL;
4057 } else
4058 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4059
4060 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4061
c0692b8f 4062 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
3dc27d25 4063 NL80211_MAX_NR_CIPHER_SUITES);
b23aa676
SO		 4064 if (err)
4065 return err;
b23aa676 4066
074ac8df 4067 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 4068 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4069 return -EOPNOTSUPP;
b23aa676 4070
79c97e97 4071 wiphy = &rdev->wiphy;
b23aa676 4072
b23aa676
SO		 4073 if (info->attrs[NL80211_ATTR_MAC])
4074 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4075 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4076 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4077
4078 if (info->attrs[NL80211_ATTR_IE]) {
4079 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4080 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4081 }
4082
4083 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4084 connect.channel =
4085 ieee80211_get_channel(wiphy,
4086 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4087 if (!connect.channel ||
4c476991
JB		 4088 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4089 return -EINVAL;
b23aa676
SO		 4090 }
4091
fffd0934
JB		 4092 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4093 connkeys = nl80211_parse_connkeys(rdev,
4094 info->attrs[NL80211_ATTR_KEYS]);
4c476991
JB		 4095 if (IS_ERR(connkeys))
4096 return PTR_ERR(connkeys);
fffd0934
JB		 4097 }
4098
4099 err = cfg80211_connect(rdev, dev, &connect, connkeys);
fffd0934
JB		 4100 if (err)
4101 kfree(connkeys);
b23aa676
SO		 4102 return err;
4103}
4104
4105static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4106{
4c476991
JB		 4107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4108 struct net_device *dev = info->user_ptr[1];
b23aa676
SO		 4109 u16 reason;
4110
4111 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4112 reason = WLAN_REASON_DEAUTH_LEAVING;
4113 else
4114 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4115
4116 if (reason == 0)
4117 return -EINVAL;
4118
074ac8df 4119 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 4120 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4121 return -EOPNOTSUPP;
b23aa676 4122
4c476991 4123 return cfg80211_disconnect(rdev, dev, reason, true);
b23aa676
SO		 4124}
4125
463d0183
JB		 4126static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4127{
4c476991 4128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
463d0183
JB		 4129 struct net *net;
4130 int err;
4131 u32 pid;
4132
4133 if (!info->attrs[NL80211_ATTR_PID])
4134 return -EINVAL;
4135
4136 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4137
463d0183 4138 net = get_net_ns_by_pid(pid);
4c476991
JB		 4139 if (IS_ERR(net))
4140 return PTR_ERR(net);
463d0183
JB		 4141
4142 err = 0;
4143
4144 /* check if anything to do */
4c476991
JB		 4145 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4146 err = cfg80211_switch_netns(rdev, net);
463d0183 4147
463d0183 4148 put_net(net);
463d0183
JB		 4149 return err;
4150}
4151
67fbb16b
SO		 4152static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4153{
4c476991 4154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
67fbb16b
SO		 4155 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4156 struct cfg80211_pmksa *pmksa) = NULL;
4c476991 4157 struct net_device *dev = info->user_ptr[1];
67fbb16b
SO		 4158 struct cfg80211_pmksa pmksa;
4159
4160 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4161
4162 if (!info->attrs[NL80211_ATTR_MAC])
4163 return -EINVAL;
4164
4165 if (!info->attrs[NL80211_ATTR_PMKID])
4166 return -EINVAL;
4167
67fbb16b
SO		 4168 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4169 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4170
074ac8df 4171 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 4172 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4173 return -EOPNOTSUPP;
67fbb16b
SO		 4174
4175 switch (info->genlhdr->cmd) {
4176 case NL80211_CMD_SET_PMKSA:
4177 rdev_ops = rdev->ops->set_pmksa;
4178 break;
4179 case NL80211_CMD_DEL_PMKSA:
4180 rdev_ops = rdev->ops->del_pmksa;
4181 break;
4182 default:
4183 WARN_ON(1);
4184 break;
4185 }
4186
4c476991
JB		 4187 if (!rdev_ops)
4188 return -EOPNOTSUPP;
67fbb16b 4189
4c476991 4190 return rdev_ops(&rdev->wiphy, dev, &pmksa);
67fbb16b
SO		 4191}
4192
4193static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4194{
4c476991
JB		 4195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4196 struct net_device *dev = info->user_ptr[1];
67fbb16b 4197
074ac8df 4198 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 4199 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4200 return -EOPNOTSUPP;
67fbb16b 4201
4c476991
JB		 4202 if (!rdev->ops->flush_pmksa)
4203 return -EOPNOTSUPP;
67fbb16b 4204
4c476991 4205 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
67fbb16b
SO		 4206}
4207
9588bbd5
JM		 4208static int nl80211_remain_on_channel(struct sk_buff *skb,
4209 struct genl_info *info)
4210{
4c476991
JB		 4211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4212 struct net_device *dev = info->user_ptr[1];
9588bbd5
JM		 4213 struct ieee80211_channel *chan;
4214 struct sk_buff *msg;
4215 void *hdr;
4216 u64 cookie;
4217 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4218 u32 freq, duration;
4219 int err;
4220
4221 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4222 !info->attrs[NL80211_ATTR_DURATION])
4223 return -EINVAL;
4224
4225 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4226
4227 /*
4228 * We should be on that channel for at least one jiffie,
4229 * and more than 5 seconds seems excessive.
4230 */
4231 if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
4232 return -EINVAL;
4233
4c476991
JB		 4234 if (!rdev->ops->remain_on_channel)
4235 return -EOPNOTSUPP;
9588bbd5 4236
9588bbd5
JM		 4237 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4238 channel_type = nla_get_u32(
4239 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4240 if (channel_type != NL80211_CHAN_NO_HT &&
4241 channel_type != NL80211_CHAN_HT20 &&
4242 channel_type != NL80211_CHAN_HT40PLUS &&
4c476991
JB		 4243 channel_type != NL80211_CHAN_HT40MINUS)
4244 return -EINVAL;
9588bbd5
JM		 4245 }
4246
4247 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4248 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4c476991
JB		 4249 if (chan == NULL)
4250 return -EINVAL;
9588bbd5
JM		 4251
4252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4c476991
JB		 4253 if (!msg)
4254 return -ENOMEM;
9588bbd5
JM		 4255
4256 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4257 NL80211_CMD_REMAIN_ON_CHANNEL);
4258
4259 if (IS_ERR(hdr)) {
4260 err = PTR_ERR(hdr);
4261 goto free_msg;
4262 }
4263
4264 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
4265 channel_type, duration, &cookie);
4266
4267 if (err)
4268 goto free_msg;
4269
4270 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4271
4272 genlmsg_end(msg, hdr);
4c476991
JB		 4273
4274 return genlmsg_reply(msg, info);
9588bbd5
JM		 4275
4276 nla_put_failure:
4277 err = -ENOBUFS;
4278 free_msg:
4279 nlmsg_free(msg);
9588bbd5
JM		 4280 return err;
4281}
4282
4283static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
4284 struct genl_info *info)
4285{
4c476991
JB		 4286 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4287 struct net_device *dev = info->user_ptr[1];
9588bbd5 4288 u64 cookie;
9588bbd5
JM		 4289
4290 if (!info->attrs[NL80211_ATTR_COOKIE])
4291 return -EINVAL;
4292
4c476991
JB		 4293 if (!rdev->ops->cancel_remain_on_channel)
4294 return -EOPNOTSUPP;
9588bbd5 4295
9588bbd5
JM		 4296 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4297
4c476991 4298 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
9588bbd5
JM		 4299}
4300
13ae75b1
JM		 4301static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4302 u8 *rates, u8 rates_len)
4303{
4304 u8 i;
4305 u32 mask = 0;
4306
4307 for (i = 0; i < rates_len; i++) {
4308 int rate = (rates[i] & 0x7f) * 5;
4309 int ridx;
4310 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4311 struct ieee80211_rate *srate =
4312 &sband->bitrates[ridx];
4313 if (rate == srate->bitrate) {
4314 mask |= 1 << ridx;
4315 break;
4316 }
4317 }
4318 if (ridx == sband->n_bitrates)
4319 return 0; /* rate not found */
4320 }
4321
4322 return mask;
4323}
4324
b54452b0 4325static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
13ae75b1
JM		 4326 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4327 .len = NL80211_MAX_SUPP_RATES },
4328};
4329
4330static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
4331 struct genl_info *info)
4332{
4333 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4c476991 4334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13ae75b1 4335 struct cfg80211_bitrate_mask mask;
4c476991
JB		 4336 int rem, i;
4337 struct net_device *dev = info->user_ptr[1];
13ae75b1
JM		 4338 struct nlattr *tx_rates;
4339 struct ieee80211_supported_band *sband;
4340
4341 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
4342 return -EINVAL;
4343
4c476991
JB		 4344 if (!rdev->ops->set_bitrate_mask)
4345 return -EOPNOTSUPP;
13ae75b1
JM		 4346
4347 memset(&mask, 0, sizeof(mask));
4348 /* Default to all rates enabled */
4349 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
4350 sband = rdev->wiphy.bands[i];
4351 mask.control[i].legacy =
4352 sband ? (1 << sband->n_bitrates) - 1 : 0;
4353 }
4354
4355 /*
4356 * The nested attribute uses enum nl80211_band as the index. This maps
4357 * directly to the enum ieee80211_band values used in cfg80211.
4358 */
4359 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
4360 {
4361 enum ieee80211_band band = nla_type(tx_rates);
4c476991
JB		 4362 if (band < 0 || band >= IEEE80211_NUM_BANDS)
4363 return -EINVAL;
13ae75b1 4364 sband = rdev->wiphy.bands[band];
4c476991
JB		 4365 if (sband == NULL)
4366 return -EINVAL;
13ae75b1
JM		 4367 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
4368 nla_len(tx_rates), nl80211_txattr_policy);
4369 if (tb[NL80211_TXRATE_LEGACY]) {
4370 mask.control[band].legacy = rateset_to_mask(
4371 sband,
4372 nla_data(tb[NL80211_TXRATE_LEGACY]),
4373 nla_len(tb[NL80211_TXRATE_LEGACY]));
4c476991
JB		 4374 if (mask.control[band].legacy == 0)
4375 return -EINVAL;
13ae75b1
JM		 4376 }
4377 }
4378
4c476991 4379 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
13ae75b1
JM		 4380}
4381
2e161f78 4382static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
026331c4 4383{
4c476991
JB		 4384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4385 struct net_device *dev = info->user_ptr[1];
2e161f78 4386 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
026331c4
JM		 4387
4388 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
4389 return -EINVAL;
4390
2e161f78
JB		 4391 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
4392 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
026331c4 4393
9d38d85d 4394 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
074ac8df 4395 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
663fcafd
JB		 4396 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4398 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4c476991
JB		 4399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4400 return -EOPNOTSUPP;
026331c4
JM		 4401
4402 /* not much point in registering if we can't reply */
4c476991
JB		 4403 if (!rdev->ops->mgmt_tx)
4404 return -EOPNOTSUPP;
026331c4 4405
4c476991 4406 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
2e161f78 4407 frame_type,
026331c4
JM		 4408 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
4409 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
026331c4
JM		 4410}
4411
2e161f78 4412static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
026331c4 4413{
4c476991
JB		 4414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4415 struct net_device *dev = info->user_ptr[1];
026331c4
JM		 4416 struct ieee80211_channel *chan;
4417 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
252aa631 4418 bool channel_type_valid = false;
026331c4
JM		 4419 u32 freq;
4420 int err;
4421 void *hdr;
4422 u64 cookie;
4423 struct sk_buff *msg;
f7ca38df
JB		 4424 unsigned int wait = 0;
4425 bool offchan;
026331c4
JM		 4426
4427 if (!info->attrs[NL80211_ATTR_FRAME] ||
4428 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4429 return -EINVAL;
4430
4c476991
JB		 4431 if (!rdev->ops->mgmt_tx)
4432 return -EOPNOTSUPP;
026331c4 4433
9d38d85d 4434 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
074ac8df 4435 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
663fcafd
JB		 4436 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4437 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4438 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4c476991
JB		 4439 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4440 return -EOPNOTSUPP;
026331c4 4441
f7ca38df
JB		 4442 if (info->attrs[NL80211_ATTR_DURATION]) {
4443 if (!rdev->ops->mgmt_tx_cancel_wait)
4444 return -EINVAL;
4445 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4446 }
4447
026331c4
JM		 4448 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4449 channel_type = nla_get_u32(
4450 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4451 if (channel_type != NL80211_CHAN_NO_HT &&
4452 channel_type != NL80211_CHAN_HT20 &&
4453 channel_type != NL80211_CHAN_HT40PLUS &&
4c476991
JB		 4454 channel_type != NL80211_CHAN_HT40MINUS)
4455 return -EINVAL;
252aa631 4456 channel_type_valid = true;
026331c4
JM		 4457 }
4458
f7ca38df
JB		 4459 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
4460
026331c4
JM		 4461 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4462 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4c476991
JB		 4463 if (chan == NULL)
4464 return -EINVAL;
026331c4
JM		 4465
4466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4c476991
JB		 4467 if (!msg)
4468 return -ENOMEM;
026331c4
JM		 4469
4470 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2e161f78 4471 NL80211_CMD_FRAME);
026331c4
JM		 4472
4473 if (IS_ERR(hdr)) {
4474 err = PTR_ERR(hdr);
4475 goto free_msg;
4476 }
f7ca38df
JB		 4477 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
4478 channel_type_valid, wait,
2e161f78
JB		 4479 nla_data(info->attrs[NL80211_ATTR_FRAME]),
4480 nla_len(info->attrs[NL80211_ATTR_FRAME]),
4481 &cookie);
026331c4
JM		 4482 if (err)
4483 goto free_msg;
4484
4485 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
4486
4487 genlmsg_end(msg, hdr);
4c476991 4488 return genlmsg_reply(msg, info);
026331c4
JM		 4489
4490 nla_put_failure:
4491 err = -ENOBUFS;
4492 free_msg:
4493 nlmsg_free(msg);
026331c4
JM		 4494 return err;
4495}
4496
f7ca38df
JB		 4497static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
4498{
4499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4500 struct net_device *dev = info->user_ptr[1];
4501 u64 cookie;
4502
4503 if (!info->attrs[NL80211_ATTR_COOKIE])
4504 return -EINVAL;
4505
4506 if (!rdev->ops->mgmt_tx_cancel_wait)
4507 return -EOPNOTSUPP;
4508
4509 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
4511 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
4512 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4513 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4514 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4515 return -EOPNOTSUPP;
4516
4517 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
4518
4519 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
4520}
4521
ffb9eb3d
KV		 4522static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
4523{
4c476991 4524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
ffb9eb3d 4525 struct wireless_dev *wdev;
4c476991 4526 struct net_device *dev = info->user_ptr[1];
ffb9eb3d
KV		 4527 u8 ps_state;
4528 bool state;
4529 int err;
4530
4c476991
JB		 4531 if (!info->attrs[NL80211_ATTR_PS_STATE])
4532 return -EINVAL;
ffb9eb3d
KV		 4533
4534 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
4535
4c476991
JB		 4536 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
4537 return -EINVAL;
ffb9eb3d
KV		 4538
4539 wdev = dev->ieee80211_ptr;
4540
4c476991
JB		 4541 if (!rdev->ops->set_power_mgmt)
4542 return -EOPNOTSUPP;
ffb9eb3d
KV		 4543
4544 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
4545
4546 if (state == wdev->ps)
4c476991 4547 return 0;
ffb9eb3d 4548
4c476991
JB		 4549 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
4550 wdev->ps_timeout);
4551 if (!err)
4552 wdev->ps = state;
ffb9eb3d
KV		 4553 return err;
4554}
4555
4556static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
4557{
4c476991 4558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
ffb9eb3d
KV		 4559 enum nl80211_ps_state ps_state;
4560 struct wireless_dev *wdev;
4c476991 4561 struct net_device *dev = info->user_ptr[1];
ffb9eb3d
KV		 4562 struct sk_buff *msg;
4563 void *hdr;
4564 int err;
4565
ffb9eb3d
KV		 4566 wdev = dev->ieee80211_ptr;
4567
4c476991
JB		 4568 if (!rdev->ops->set_power_mgmt)
4569 return -EOPNOTSUPP;
ffb9eb3d
KV		 4570
4571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4c476991
JB		 4572 if (!msg)
4573 return -ENOMEM;
ffb9eb3d
KV		 4574
4575 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4576 NL80211_CMD_GET_POWER_SAVE);
4577 if (!hdr) {
4c476991 4578 err = -ENOBUFS;
ffb9eb3d
KV		 4579 goto free_msg;
4580 }
4581
4582 if (wdev->ps)
4583 ps_state = NL80211_PS_ENABLED;
4584 else
4585 ps_state = NL80211_PS_DISABLED;
4586
4587 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
4588
4589 genlmsg_end(msg, hdr);
4c476991 4590 return genlmsg_reply(msg, info);
ffb9eb3d 4591
4c476991 4592 nla_put_failure:
ffb9eb3d 4593 err = -ENOBUFS;
4c476991 4594 free_msg:
ffb9eb3d 4595 nlmsg_free(msg);
ffb9eb3d
KV		 4596 return err;
4597}
4598
d6dc1a38
JO		 4599static struct nla_policy
4600nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
4601 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
4602 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
4603 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
4604};
4605
4606static int nl80211_set_cqm_rssi(struct genl_info *info,
4607 s32 threshold, u32 hysteresis)
4608{
4c476991 4609 struct cfg80211_registered_device *rdev = info->user_ptr[0];
d6dc1a38 4610 struct wireless_dev *wdev;
4c476991 4611 struct net_device *dev = info->user_ptr[1];
d6dc1a38
JO		 4612
4613 if (threshold > 0)
4614 return -EINVAL;
4615
d6dc1a38
JO		 4616 wdev = dev->ieee80211_ptr;
4617
4c476991
JB		 4618 if (!rdev->ops->set_cqm_rssi_config)
4619 return -EOPNOTSUPP;
d6dc1a38 4620
074ac8df 4621 if (wdev->iftype != NL80211_IFTYPE_STATION &&
4c476991
JB		 4622 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
4623 return -EOPNOTSUPP;
d6dc1a38 4624
4c476991
JB		 4625 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
4626 threshold, hysteresis);
d6dc1a38
JO		 4627}
4628
4629static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
4630{
4631 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
4632 struct nlattr *cqm;
4633 int err;
4634
4635 cqm = info->attrs[NL80211_ATTR_CQM];
4636 if (!cqm) {
4637 err = -EINVAL;
4638 goto out;
4639 }
4640
4641 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
4642 nl80211_attr_cqm_policy);
4643 if (err)
4644 goto out;
4645
4646 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
4647 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
4648 s32 threshold;
4649 u32 hysteresis;
4650 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
4651 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
4652 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
4653 } else
4654 err = -EINVAL;
4655
4656out:
4657 return err;
4658}
4659
29cbe68c
JB		 4660static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
4661{
4662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4663 struct net_device *dev = info->user_ptr[1];
4664 struct mesh_config cfg;
4665 int err;
4666
4667 /* start with default */
4668 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
4669
4670 if (info->attrs[NL80211_ATTR_MESH_PARAMS]) {
4671 /* and parse parameters if given */
4672 err = nl80211_parse_mesh_params(info, &cfg, NULL);
4673 if (err)
4674 return err;
4675 }
4676
4677 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
4678 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
4679 return -EINVAL;
4680
4681 return cfg80211_join_mesh(rdev, dev,
4682 nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4683 nla_len(info->attrs[NL80211_ATTR_MESH_ID]),
4684 &cfg);
4685}
4686
4687static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
4688{
4689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4690 struct net_device *dev = info->user_ptr[1];
4691
4692 return cfg80211_leave_mesh(rdev, dev);
4693}
4694
4c476991
JB		 4695#define NL80211_FLAG_NEED_WIPHY 0x01
4696#define NL80211_FLAG_NEED_NETDEV 0x02
4697#define NL80211_FLAG_NEED_RTNL 0x04
41265714
JB		 4698#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
4699#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
4700 NL80211_FLAG_CHECK_NETDEV_UP)
4c476991
JB		 4701
4702static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
4703 struct genl_info *info)
4704{
4705 struct cfg80211_registered_device *rdev;
4706 struct net_device *dev;
4707 int err;
4708 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
4709
4710 if (rtnl)
4711 rtnl_lock();
4712
4713 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
4714 rdev = cfg80211_get_dev_from_info(info);
4715 if (IS_ERR(rdev)) {
4716 if (rtnl)
4717 rtnl_unlock();
4718 return PTR_ERR(rdev);
4719 }
4720 info->user_ptr[0] = rdev;
4721 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
4722 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
4723 if (err) {
4724 if (rtnl)
4725 rtnl_unlock();
4726 return err;
4727 }
41265714
JB		 4728 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
4729 !netif_running(dev)) {
d537f5fd
JB		 4730 cfg80211_unlock_rdev(rdev);
4731 dev_put(dev);
41265714
JB		 4732 if (rtnl)
4733 rtnl_unlock();
4734 return -ENETDOWN;
4735 }
4c476991
JB		 4736 info->user_ptr[0] = rdev;
4737 info->user_ptr[1] = dev;
4738 }
4739
4740 return 0;
4741}
4742
4743static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
4744 struct genl_info *info)
4745{
4746 if (info->user_ptr[0])
4747 cfg80211_unlock_rdev(info->user_ptr[0]);
4748 if (info->user_ptr[1])
4749 dev_put(info->user_ptr[1]);
4750 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
4751 rtnl_unlock();
4752}
4753
55682965
JB		 4754static struct genl_ops nl80211_ops[] = {
4755 {
4756 .cmd = NL80211_CMD_GET_WIPHY,
4757 .doit = nl80211_get_wiphy,
4758 .dumpit = nl80211_dump_wiphy,
4759 .policy = nl80211_policy,
4760 /* can be retrieved by unprivileged users */
4c476991 4761 .internal_flags = NL80211_FLAG_NEED_WIPHY,
55682965
JB		 4762 },
4763 {
4764 .cmd = NL80211_CMD_SET_WIPHY,
4765 .doit = nl80211_set_wiphy,
4766 .policy = nl80211_policy,
4767 .flags = GENL_ADMIN_PERM,
4c476991 4768 .internal_flags = NL80211_FLAG_NEED_RTNL,
55682965
JB		 4769 },
4770 {
4771 .cmd = NL80211_CMD_GET_INTERFACE,
4772 .doit = nl80211_get_interface,
4773 .dumpit = nl80211_dump_interface,
4774 .policy = nl80211_policy,
4775 /* can be retrieved by unprivileged users */
4c476991 4776 .internal_flags = NL80211_FLAG_NEED_NETDEV,
55682965
JB		 4777 },
4778 {
4779 .cmd = NL80211_CMD_SET_INTERFACE,
4780 .doit = nl80211_set_interface,
4781 .policy = nl80211_policy,
4782 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4783 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4784 NL80211_FLAG_NEED_RTNL,
55682965
JB		 4785 },
4786 {
4787 .cmd = NL80211_CMD_NEW_INTERFACE,
4788 .doit = nl80211_new_interface,
4789 .policy = nl80211_policy,
4790 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4791 .internal_flags = NL80211_FLAG_NEED_WIPHY |
4792 NL80211_FLAG_NEED_RTNL,
55682965
JB		 4793 },
4794 {
4795 .cmd = NL80211_CMD_DEL_INTERFACE,
4796 .doit = nl80211_del_interface,
4797 .policy = nl80211_policy,
41ade00f 4798 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4799 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4800 NL80211_FLAG_NEED_RTNL,
41ade00f
JB		 4801 },
4802 {
4803 .cmd = NL80211_CMD_GET_KEY,
4804 .doit = nl80211_get_key,
4805 .policy = nl80211_policy,
4806 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4807 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4808 NL80211_FLAG_NEED_RTNL,
41ade00f
JB		 4809 },
4810 {
4811 .cmd = NL80211_CMD_SET_KEY,
4812 .doit = nl80211_set_key,
4813 .policy = nl80211_policy,
4814 .flags = GENL_ADMIN_PERM,
41265714 4815 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4816 NL80211_FLAG_NEED_RTNL,
41ade00f
JB		 4817 },
4818 {
4819 .cmd = NL80211_CMD_NEW_KEY,
4820 .doit = nl80211_new_key,
4821 .policy = nl80211_policy,
4822 .flags = GENL_ADMIN_PERM,
41265714 4823 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4824 NL80211_FLAG_NEED_RTNL,
41ade00f
JB		 4825 },
4826 {
4827 .cmd = NL80211_CMD_DEL_KEY,
4828 .doit = nl80211_del_key,
4829 .policy = nl80211_policy,
55682965 4830 .flags = GENL_ADMIN_PERM,
41265714 4831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4832 NL80211_FLAG_NEED_RTNL,
55682965 4833 },
ed1b6cc7
JB		 4834 {
4835 .cmd = NL80211_CMD_SET_BEACON,
4836 .policy = nl80211_policy,
4837 .flags = GENL_ADMIN_PERM,
4838 .doit = nl80211_addset_beacon,
4c476991
JB		 4839 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4840 NL80211_FLAG_NEED_RTNL,
ed1b6cc7
JB		 4841 },
4842 {
4843 .cmd = NL80211_CMD_NEW_BEACON,
4844 .policy = nl80211_policy,
4845 .flags = GENL_ADMIN_PERM,
4846 .doit = nl80211_addset_beacon,
4c476991
JB		 4847 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4848 NL80211_FLAG_NEED_RTNL,
ed1b6cc7
JB		 4849 },
4850 {
4851 .cmd = NL80211_CMD_DEL_BEACON,
4852 .policy = nl80211_policy,
4853 .flags = GENL_ADMIN_PERM,
4854 .doit = nl80211_del_beacon,
4c476991
JB		 4855 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4856 NL80211_FLAG_NEED_RTNL,
ed1b6cc7 4857 },
5727ef1b
JB		 4858 {
4859 .cmd = NL80211_CMD_GET_STATION,
4860 .doit = nl80211_get_station,
2ec600d6 4861 .dumpit = nl80211_dump_station,
5727ef1b 4862 .policy = nl80211_policy,
4c476991
JB		 4863 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4864 NL80211_FLAG_NEED_RTNL,
5727ef1b
JB		 4865 },
4866 {
4867 .cmd = NL80211_CMD_SET_STATION,
4868 .doit = nl80211_set_station,
4869 .policy = nl80211_policy,
4870 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4871 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4872 NL80211_FLAG_NEED_RTNL,
5727ef1b
JB		 4873 },
4874 {
4875 .cmd = NL80211_CMD_NEW_STATION,
4876 .doit = nl80211_new_station,
4877 .policy = nl80211_policy,
4878 .flags = GENL_ADMIN_PERM,
41265714 4879 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4880 NL80211_FLAG_NEED_RTNL,
5727ef1b
JB		 4881 },
4882 {
4883 .cmd = NL80211_CMD_DEL_STATION,
4884 .doit = nl80211_del_station,
4885 .policy = nl80211_policy,
2ec600d6 4886 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4887 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4888 NL80211_FLAG_NEED_RTNL,
2ec600d6
LCC		 4889 },
4890 {
4891 .cmd = NL80211_CMD_GET_MPATH,
4892 .doit = nl80211_get_mpath,
4893 .dumpit = nl80211_dump_mpath,
4894 .policy = nl80211_policy,
4895 .flags = GENL_ADMIN_PERM,
41265714 4896 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4897 NL80211_FLAG_NEED_RTNL,
2ec600d6
LCC		 4898 },
4899 {
4900 .cmd = NL80211_CMD_SET_MPATH,
4901 .doit = nl80211_set_mpath,
4902 .policy = nl80211_policy,
4903 .flags = GENL_ADMIN_PERM,
41265714 4904 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4905 NL80211_FLAG_NEED_RTNL,
2ec600d6
LCC		 4906 },
4907 {
4908 .cmd = NL80211_CMD_NEW_MPATH,
4909 .doit = nl80211_new_mpath,
4910 .policy = nl80211_policy,
4911 .flags = GENL_ADMIN_PERM,
41265714 4912 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4913 NL80211_FLAG_NEED_RTNL,
2ec600d6
LCC		 4914 },
4915 {
4916 .cmd = NL80211_CMD_DEL_MPATH,
4917 .doit = nl80211_del_mpath,
4918 .policy = nl80211_policy,
9f1ba906 4919 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4920 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4921 NL80211_FLAG_NEED_RTNL,
9f1ba906
JM		 4922 },
4923 {
4924 .cmd = NL80211_CMD_SET_BSS,
4925 .doit = nl80211_set_bss,
4926 .policy = nl80211_policy,
b2e1b302 4927 .flags = GENL_ADMIN_PERM,
4c476991
JB		 4928 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4929 NL80211_FLAG_NEED_RTNL,
b2e1b302 4930 },
f130347c
LR		 4931 {
4932 .cmd = NL80211_CMD_GET_REG,
4933 .doit = nl80211_get_reg,
4934 .policy = nl80211_policy,
4935 /* can be retrieved by unprivileged users */
4936 },
b2e1b302
LR		 4937 {
4938 .cmd = NL80211_CMD_SET_REG,
4939 .doit = nl80211_set_reg,
4940 .policy = nl80211_policy,
4941 .flags = GENL_ADMIN_PERM,
4942 },
4943 {
4944 .cmd = NL80211_CMD_REQ_SET_REG,
4945 .doit = nl80211_req_set_reg,
4946 .policy = nl80211_policy,
93da9cc1 4947 .flags = GENL_ADMIN_PERM,
4948 },
4949 {
4950 .cmd = NL80211_CMD_GET_MESH_PARAMS,
4951 .doit = nl80211_get_mesh_params,
4952 .policy = nl80211_policy,
4953 /* can be retrieved by unprivileged users */
4c476991
JB		 4954 .internal_flags = NL80211_FLAG_NEED_NETDEV |
4955 NL80211_FLAG_NEED_RTNL,
93da9cc1 4956 },
4957 {
4958 .cmd = NL80211_CMD_SET_MESH_PARAMS,
29cbe68c 4959 .doit = nl80211_update_mesh_params,
93da9cc1 4960 .policy = nl80211_policy,
9aed3cc1 4961 .flags = GENL_ADMIN_PERM,
29cbe68c 4962 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4963 NL80211_FLAG_NEED_RTNL,
9aed3cc1 4964 },
2a519311
JB		 4965 {
4966 .cmd = NL80211_CMD_TRIGGER_SCAN,
4967 .doit = nl80211_trigger_scan,
4968 .policy = nl80211_policy,
4969 .flags = GENL_ADMIN_PERM,
41265714 4970 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4971 NL80211_FLAG_NEED_RTNL,
2a519311
JB		 4972 },
4973 {
4974 .cmd = NL80211_CMD_GET_SCAN,
4975 .policy = nl80211_policy,
4976 .dumpit = nl80211_dump_scan,
4977 },
636a5d36
JM		 4978 {
4979 .cmd = NL80211_CMD_AUTHENTICATE,
4980 .doit = nl80211_authenticate,
4981 .policy = nl80211_policy,
4982 .flags = GENL_ADMIN_PERM,
41265714 4983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4984 NL80211_FLAG_NEED_RTNL,
636a5d36
JM		 4985 },
4986 {
4987 .cmd = NL80211_CMD_ASSOCIATE,
4988 .doit = nl80211_associate,
4989 .policy = nl80211_policy,
4990 .flags = GENL_ADMIN_PERM,
41265714 4991 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 4992 NL80211_FLAG_NEED_RTNL,
636a5d36
JM		 4993 },
4994 {
4995 .cmd = NL80211_CMD_DEAUTHENTICATE,
4996 .doit = nl80211_deauthenticate,
4997 .policy = nl80211_policy,
4998 .flags = GENL_ADMIN_PERM,
41265714 4999 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5000 NL80211_FLAG_NEED_RTNL,
636a5d36
JM		 5001 },
5002 {
5003 .cmd = NL80211_CMD_DISASSOCIATE,
5004 .doit = nl80211_disassociate,
5005 .policy = nl80211_policy,
5006 .flags = GENL_ADMIN_PERM,
41265714 5007 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5008 NL80211_FLAG_NEED_RTNL,
636a5d36 5009 },
04a773ad
JB		 5010 {
5011 .cmd = NL80211_CMD_JOIN_IBSS,
5012 .doit = nl80211_join_ibss,
5013 .policy = nl80211_policy,
5014 .flags = GENL_ADMIN_PERM,
41265714 5015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5016 NL80211_FLAG_NEED_RTNL,
04a773ad
JB		 5017 },
5018 {
5019 .cmd = NL80211_CMD_LEAVE_IBSS,
5020 .doit = nl80211_leave_ibss,
5021 .policy = nl80211_policy,
5022 .flags = GENL_ADMIN_PERM,
41265714 5023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5024 NL80211_FLAG_NEED_RTNL,
04a773ad 5025 },
aff89a9b
JB		 5026#ifdef CONFIG_NL80211_TESTMODE
5027 {
5028 .cmd = NL80211_CMD_TESTMODE,
5029 .doit = nl80211_testmode_do,
5030 .policy = nl80211_policy,
5031 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5032 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5033 NL80211_FLAG_NEED_RTNL,
aff89a9b
JB		 5034 },
5035#endif
b23aa676
SO		 5036 {
5037 .cmd = NL80211_CMD_CONNECT,
5038 .doit = nl80211_connect,
5039 .policy = nl80211_policy,
5040 .flags = GENL_ADMIN_PERM,
41265714 5041 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5042 NL80211_FLAG_NEED_RTNL,
b23aa676
SO		 5043 },
5044 {
5045 .cmd = NL80211_CMD_DISCONNECT,
5046 .doit = nl80211_disconnect,
5047 .policy = nl80211_policy,
5048 .flags = GENL_ADMIN_PERM,
41265714 5049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5050 NL80211_FLAG_NEED_RTNL,
b23aa676 5051 },
463d0183
JB		 5052 {
5053 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
5054 .doit = nl80211_wiphy_netns,
5055 .policy = nl80211_policy,
5056 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5057 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5058 NL80211_FLAG_NEED_RTNL,
463d0183 5059 },
61fa713c
HS		 5060 {
5061 .cmd = NL80211_CMD_GET_SURVEY,
5062 .policy = nl80211_policy,
5063 .dumpit = nl80211_dump_survey,
5064 },
67fbb16b
SO		 5065 {
5066 .cmd = NL80211_CMD_SET_PMKSA,
5067 .doit = nl80211_setdel_pmksa,
5068 .policy = nl80211_policy,
5069 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5070 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5071 NL80211_FLAG_NEED_RTNL,
67fbb16b
SO		 5072 },
5073 {
5074 .cmd = NL80211_CMD_DEL_PMKSA,
5075 .doit = nl80211_setdel_pmksa,
5076 .policy = nl80211_policy,
5077 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5078 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5079 NL80211_FLAG_NEED_RTNL,
67fbb16b
SO		 5080 },
5081 {
5082 .cmd = NL80211_CMD_FLUSH_PMKSA,
5083 .doit = nl80211_flush_pmksa,
5084 .policy = nl80211_policy,
5085 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5086 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5087 NL80211_FLAG_NEED_RTNL,
67fbb16b 5088 },
9588bbd5
JM		 5089 {
5090 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
5091 .doit = nl80211_remain_on_channel,
5092 .policy = nl80211_policy,
5093 .flags = GENL_ADMIN_PERM,
41265714 5094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5095 NL80211_FLAG_NEED_RTNL,
9588bbd5
JM		 5096 },
5097 {
5098 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5099 .doit = nl80211_cancel_remain_on_channel,
5100 .policy = nl80211_policy,
5101 .flags = GENL_ADMIN_PERM,
41265714 5102 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5103 NL80211_FLAG_NEED_RTNL,
9588bbd5 5104 },
13ae75b1
JM		 5105 {
5106 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
5107 .doit = nl80211_set_tx_bitrate_mask,
5108 .policy = nl80211_policy,
5109 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5110 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5111 NL80211_FLAG_NEED_RTNL,
13ae75b1 5112 },
026331c4 5113 {
2e161f78
JB		 5114 .cmd = NL80211_CMD_REGISTER_FRAME,
5115 .doit = nl80211_register_mgmt,
026331c4
JM		 5116 .policy = nl80211_policy,
5117 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5118 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5119 NL80211_FLAG_NEED_RTNL,
026331c4
JM		 5120 },
5121 {
2e161f78
JB		 5122 .cmd = NL80211_CMD_FRAME,
5123 .doit = nl80211_tx_mgmt,
026331c4 5124 .policy = nl80211_policy,
f7ca38df
JB		 5125 .flags = GENL_ADMIN_PERM,
5126 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5127 NL80211_FLAG_NEED_RTNL,
5128 },
5129 {
5130 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
5131 .doit = nl80211_tx_mgmt_cancel_wait,
5132 .policy = nl80211_policy,
026331c4 5133 .flags = GENL_ADMIN_PERM,
41265714 5134 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
4c476991 5135 NL80211_FLAG_NEED_RTNL,
026331c4 5136 },
ffb9eb3d
KV		 5137 {
5138 .cmd = NL80211_CMD_SET_POWER_SAVE,
5139 .doit = nl80211_set_power_save,
5140 .policy = nl80211_policy,
5141 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5142 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5143 NL80211_FLAG_NEED_RTNL,
ffb9eb3d
KV		 5144 },
5145 {
5146 .cmd = NL80211_CMD_GET_POWER_SAVE,
5147 .doit = nl80211_get_power_save,
5148 .policy = nl80211_policy,
5149 /* can be retrieved by unprivileged users */
4c476991
JB		 5150 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5151 NL80211_FLAG_NEED_RTNL,
ffb9eb3d 5152 },
d6dc1a38
JO		 5153 {
5154 .cmd = NL80211_CMD_SET_CQM,
5155 .doit = nl80211_set_cqm,
5156 .policy = nl80211_policy,
5157 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5158 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5159 NL80211_FLAG_NEED_RTNL,
d6dc1a38 5160 },
f444de05
JB		 5161 {
5162 .cmd = NL80211_CMD_SET_CHANNEL,
5163 .doit = nl80211_set_channel,
5164 .policy = nl80211_policy,
5165 .flags = GENL_ADMIN_PERM,
4c476991
JB		 5166 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5167 NL80211_FLAG_NEED_RTNL,
f444de05 5168 },
e8347eba
BJ		 5169 {
5170 .cmd = NL80211_CMD_SET_WDS_PEER,
5171 .doit = nl80211_set_wds_peer,
5172 .policy = nl80211_policy,
5173 .flags = GENL_ADMIN_PERM,
43b19952
JB		 5174 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5175 NL80211_FLAG_NEED_RTNL,
e8347eba 5176 },
29cbe68c
JB		 5177 {
5178 .cmd = NL80211_CMD_JOIN_MESH,
5179 .doit = nl80211_join_mesh,
5180 .policy = nl80211_policy,
5181 .flags = GENL_ADMIN_PERM,
5182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5183 NL80211_FLAG_NEED_RTNL,
5184 },
5185 {
5186 .cmd = NL80211_CMD_LEAVE_MESH,
5187 .doit = nl80211_leave_mesh,
5188 .policy = nl80211_policy,
5189 .flags = GENL_ADMIN_PERM,
5190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5191 NL80211_FLAG_NEED_RTNL,
5192 },
55682965 5193};
9588bbd5 5194
6039f6d2
JM		 5195static struct genl_multicast_group nl80211_mlme_mcgrp = {
5196 .name = "mlme",
5197};
55682965
JB		 5198
5199/* multicast groups */
5200static struct genl_multicast_group nl80211_config_mcgrp = {
5201 .name = "config",
5202};
2a519311
JB		 5203static struct genl_multicast_group nl80211_scan_mcgrp = {
5204 .name = "scan",
5205};
73d54c9e
LR		 5206static struct genl_multicast_group nl80211_regulatory_mcgrp = {
5207 .name = "regulatory",
5208};
55682965
JB		 5209
5210/* notification functions */
5211
5212void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
5213{
5214 struct sk_buff *msg;
5215
fd2120ca 5216 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
55682965
JB		 5217 if (!msg)
5218 return;
5219
5220 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
5221 nlmsg_free(msg);
5222 return;
5223 }
5224
463d0183
JB		 5225 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5226 nl80211_config_mcgrp.id, GFP_KERNEL);
55682965
JB		 5227}
5228
362a415d
JB		 5229static int nl80211_add_scan_req(struct sk_buff *msg,
5230 struct cfg80211_registered_device *rdev)
5231{
5232 struct cfg80211_scan_request *req = rdev->scan_req;
5233 struct nlattr *nest;
5234 int i;
5235
667503dd
JB		 5236 ASSERT_RDEV_LOCK(rdev);
5237
362a415d
JB		 5238 if (WARN_ON(!req))
5239 return 0;
5240
5241 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
5242 if (!nest)
5243 goto nla_put_failure;
5244 for (i = 0; i < req->n_ssids; i++)
5245 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
5246 nla_nest_end(msg, nest);
5247
5248 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
5249 if (!nest)
5250 goto nla_put_failure;
5251 for (i = 0; i < req->n_channels; i++)
5252 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
5253 nla_nest_end(msg, nest);
5254
5255 if (req->ie)
5256 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
5257
5258 return 0;
5259 nla_put_failure:
5260 return -ENOBUFS;
5261}
5262
a538e2d5
JB		 5263static int nl80211_send_scan_msg(struct sk_buff *msg,
5264 struct cfg80211_registered_device *rdev,
5265 struct net_device *netdev,
5266 u32 pid, u32 seq, int flags,
5267 u32 cmd)
2a519311
JB		 5268{
5269 void *hdr;
5270
5271 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
5272 if (!hdr)
5273 return -1;
5274
b5850a7a 5275 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
2a519311
JB		 5276 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5277
362a415d
JB		 5278 /* ignore errors and send incomplete event anyway */
5279 nl80211_add_scan_req(msg, rdev);
2a519311
JB		 5280
5281 return genlmsg_end(msg, hdr);
5282
5283 nla_put_failure:
5284 genlmsg_cancel(msg, hdr);
5285 return -EMSGSIZE;
5286}
5287
a538e2d5
JB		 5288void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
5289 struct net_device *netdev)
5290{
5291 struct sk_buff *msg;
5292
5293 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
5294 if (!msg)
5295 return;
5296
5297 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5298 NL80211_CMD_TRIGGER_SCAN) < 0) {
5299 nlmsg_free(msg);
5300 return;
5301 }
5302
463d0183
JB		 5303 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5304 nl80211_scan_mcgrp.id, GFP_KERNEL);
a538e2d5
JB		 5305}
5306
2a519311
JB		 5307void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
5308 struct net_device *netdev)
5309{
5310 struct sk_buff *msg;
5311
fd2120ca 5312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2a519311
JB		 5313 if (!msg)
5314 return;
5315
a538e2d5
JB		 5316 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5317 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
2a519311
JB		 5318 nlmsg_free(msg);
5319 return;
5320 }
5321
463d0183
JB		 5322 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5323 nl80211_scan_mcgrp.id, GFP_KERNEL);
2a519311
JB		 5324}
5325
5326void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
5327 struct net_device *netdev)
5328{
5329 struct sk_buff *msg;
5330
fd2120ca 5331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2a519311
JB		 5332 if (!msg)
5333 return;
5334
a538e2d5
JB		 5335 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
5336 NL80211_CMD_SCAN_ABORTED) < 0) {
2a519311
JB		 5337 nlmsg_free(msg);
5338 return;
5339 }
5340
463d0183
JB		 5341 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5342 nl80211_scan_mcgrp.id, GFP_KERNEL);
2a519311
JB		 5343}
5344
73d54c9e
LR		 5345/*
5346 * This can happen on global regulatory changes or device specific settings
5347 * based on custom world regulatory domains.
5348 */
5349void nl80211_send_reg_change_event(struct regulatory_request *request)
5350{
5351 struct sk_buff *msg;
5352 void *hdr;
5353
fd2120ca 5354 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
73d54c9e
LR		 5355 if (!msg)
5356 return;
5357
5358 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
5359 if (!hdr) {
5360 nlmsg_free(msg);
5361 return;
5362 }
5363
5364 /* Userspace can always count this one always being set */
5365 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
5366
5367 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
5368 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5369 NL80211_REGDOM_TYPE_WORLD);
5370 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
5371 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5372 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
5373 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
5374 request->intersect)
5375 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5376 NL80211_REGDOM_TYPE_INTERSECTION);
5377 else {
5378 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
5379 NL80211_REGDOM_TYPE_COUNTRY);
5380 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
5381 }
5382
5383 if (wiphy_idx_valid(request->wiphy_idx))
5384 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
5385
5386 if (genlmsg_end(msg, hdr) < 0) {
5387 nlmsg_free(msg);
5388 return;
5389 }
5390
bc43b28c 5391 rcu_read_lock();
463d0183 5392 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
bc43b28c
JB		 5393 GFP_ATOMIC);
5394 rcu_read_unlock();
73d54c9e
LR		 5395
5396 return;
5397
5398nla_put_failure:
5399 genlmsg_cancel(msg, hdr);
5400 nlmsg_free(msg);
5401}
5402
6039f6d2
JM		 5403static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
5404 struct net_device *netdev,
5405 const u8 *buf, size_t len,
e6d6e342 5406 enum nl80211_commands cmd, gfp_t gfp)
6039f6d2
JM		 5407{
5408 struct sk_buff *msg;
5409 void *hdr;
5410
e6d6e342 5411 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6039f6d2
JM		 5412 if (!msg)
5413 return;
5414
5415 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5416 if (!hdr) {
5417 nlmsg_free(msg);
5418 return;
5419 }
5420
5421 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5422 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5423 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5424
5425 if (genlmsg_end(msg, hdr) < 0) {
5426 nlmsg_free(msg);
5427 return;
5428 }
5429
463d0183
JB		 5430 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5431 nl80211_mlme_mcgrp.id, gfp);
6039f6d2
JM		 5432 return;
5433
5434 nla_put_failure:
5435 genlmsg_cancel(msg, hdr);
5436 nlmsg_free(msg);
5437}
5438
5439void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 5440 struct net_device *netdev, const u8 *buf,
5441 size_t len, gfp_t gfp)
6039f6d2
JM		 5442{
5443 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 5444 NL80211_CMD_AUTHENTICATE, gfp);
6039f6d2
JM		 5445}
5446
5447void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
5448 struct net_device *netdev, const u8 *buf,
e6d6e342 5449 size_t len, gfp_t gfp)
6039f6d2 5450{
e6d6e342
JB		 5451 nl80211_send_mlme_event(rdev, netdev, buf, len,
5452 NL80211_CMD_ASSOCIATE, gfp);
6039f6d2
JM		 5453}
5454
53b46b84 5455void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 5456 struct net_device *netdev, const u8 *buf,
5457 size_t len, gfp_t gfp)
6039f6d2
JM		 5458{
5459 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 5460 NL80211_CMD_DEAUTHENTICATE, gfp);
6039f6d2
JM		 5461}
5462
53b46b84
JM		 5463void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
5464 struct net_device *netdev, const u8 *buf,
e6d6e342 5465 size_t len, gfp_t gfp)
6039f6d2
JM		 5466{
5467 nl80211_send_mlme_event(rdev, netdev, buf, len,
e6d6e342 5468 NL80211_CMD_DISASSOCIATE, gfp);
6039f6d2
JM		 5469}
5470
1b06bb40
LR		 5471static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
5472 struct net_device *netdev, int cmd,
e6d6e342 5473 const u8 *addr, gfp_t gfp)
1965c853
JM		 5474{
5475 struct sk_buff *msg;
5476 void *hdr;
5477
e6d6e342 5478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
1965c853
JM		 5479 if (!msg)
5480 return;
5481
5482 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5483 if (!hdr) {
5484 nlmsg_free(msg);
5485 return;
5486 }
5487
5488 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5489 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5490 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
5491 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5492
5493 if (genlmsg_end(msg, hdr) < 0) {
5494 nlmsg_free(msg);
5495 return;
5496 }
5497
463d0183
JB		 5498 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5499 nl80211_mlme_mcgrp.id, gfp);
1965c853
JM		 5500 return;
5501
5502 nla_put_failure:
5503 genlmsg_cancel(msg, hdr);
5504 nlmsg_free(msg);
5505}
5506
5507void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 5508 struct net_device *netdev, const u8 *addr,
5509 gfp_t gfp)
1965c853
JM		 5510{
5511 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
e6d6e342 5512 addr, gfp);
1965c853
JM		 5513}
5514
5515void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
e6d6e342
JB		 5516 struct net_device *netdev, const u8 *addr,
5517 gfp_t gfp)
1965c853 5518{
e6d6e342
JB		 5519 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
5520 addr, gfp);
1965c853
JM		 5521}
5522
b23aa676
SO		 5523void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
5524 struct net_device *netdev, const u8 *bssid,
5525 const u8 *req_ie, size_t req_ie_len,
5526 const u8 *resp_ie, size_t resp_ie_len,
5527 u16 status, gfp_t gfp)
5528{
5529 struct sk_buff *msg;
5530 void *hdr;
5531
5532 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5533 if (!msg)
5534 return;
5535
5536 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
5537 if (!hdr) {
5538 nlmsg_free(msg);
5539 return;
5540 }
5541
5542 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5543 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5544 if (bssid)
5545 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5546 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
5547 if (req_ie)
5548 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5549 if (resp_ie)
5550 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5551
5552 if (genlmsg_end(msg, hdr) < 0) {
5553 nlmsg_free(msg);
5554 return;
5555 }
5556
463d0183
JB		 5557 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5558 nl80211_mlme_mcgrp.id, gfp);
b23aa676
SO		 5559 return;
5560
5561 nla_put_failure:
5562 genlmsg_cancel(msg, hdr);
5563 nlmsg_free(msg);
5564
5565}
5566
5567void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
5568 struct net_device *netdev, const u8 *bssid,
5569 const u8 *req_ie, size_t req_ie_len,
5570 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
5571{
5572 struct sk_buff *msg;
5573 void *hdr;
5574
5575 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5576 if (!msg)
5577 return;
5578
5579 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
5580 if (!hdr) {
5581 nlmsg_free(msg);
5582 return;
5583 }
5584
5585 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5586 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5587 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5588 if (req_ie)
5589 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
5590 if (resp_ie)
5591 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
5592
5593 if (genlmsg_end(msg, hdr) < 0) {
5594 nlmsg_free(msg);
5595 return;
5596 }
5597
463d0183
JB		 5598 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5599 nl80211_mlme_mcgrp.id, gfp);
b23aa676
SO		 5600 return;
5601
5602 nla_put_failure:
5603 genlmsg_cancel(msg, hdr);
5604 nlmsg_free(msg);
5605
5606}
5607
5608void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
5609 struct net_device *netdev, u16 reason,
667503dd 5610 const u8 *ie, size_t ie_len, bool from_ap)
b23aa676
SO		 5611{
5612 struct sk_buff *msg;
5613 void *hdr;
5614
667503dd 5615 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
b23aa676
SO		 5616 if (!msg)
5617 return;
5618
5619 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
5620 if (!hdr) {
5621 nlmsg_free(msg);
5622 return;
5623 }
5624
5625 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5626 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5627 if (from_ap && reason)
5628 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
5629 if (from_ap)
5630 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
5631 if (ie)
5632 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
5633
5634 if (genlmsg_end(msg, hdr) < 0) {
5635 nlmsg_free(msg);
5636 return;
5637 }
5638
463d0183
JB		 5639 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5640 nl80211_mlme_mcgrp.id, GFP_KERNEL);
b23aa676
SO		 5641 return;
5642
5643 nla_put_failure:
5644 genlmsg_cancel(msg, hdr);
5645 nlmsg_free(msg);
5646
5647}
5648
04a773ad
JB		 5649void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
5650 struct net_device *netdev, const u8 *bssid,
5651 gfp_t gfp)
5652{
5653 struct sk_buff *msg;
5654 void *hdr;
5655
fd2120ca 5656 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
04a773ad
JB		 5657 if (!msg)
5658 return;
5659
5660 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
5661 if (!hdr) {
5662 nlmsg_free(msg);
5663 return;
5664 }
5665
5666 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5667 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5668 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
5669
5670 if (genlmsg_end(msg, hdr) < 0) {
5671 nlmsg_free(msg);
5672 return;
5673 }
5674
463d0183
JB		 5675 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5676 nl80211_mlme_mcgrp.id, gfp);
04a773ad
JB		 5677 return;
5678
5679 nla_put_failure:
5680 genlmsg_cancel(msg, hdr);
5681 nlmsg_free(msg);
5682}
5683
a3b8b056
JM		 5684void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
5685 struct net_device *netdev, const u8 *addr,
5686 enum nl80211_key_type key_type, int key_id,
e6d6e342 5687 const u8 *tsc, gfp_t gfp)
a3b8b056
JM		 5688{
5689 struct sk_buff *msg;
5690 void *hdr;
5691
e6d6e342 5692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
a3b8b056
JM		 5693 if (!msg)
5694 return;
5695
5696 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
5697 if (!hdr) {
5698 nlmsg_free(msg);
5699 return;
5700 }
5701
5702 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5703 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5704 if (addr)
5705 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5706 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
5707 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
5708 if (tsc)
5709 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
5710
5711 if (genlmsg_end(msg, hdr) < 0) {
5712 nlmsg_free(msg);
5713 return;
5714 }
5715
463d0183
JB		 5716 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5717 nl80211_mlme_mcgrp.id, gfp);
a3b8b056
JM		 5718 return;
5719
5720 nla_put_failure:
5721 genlmsg_cancel(msg, hdr);
5722 nlmsg_free(msg);
5723}
5724
6bad8766
LR		 5725void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
5726 struct ieee80211_channel *channel_before,
5727 struct ieee80211_channel *channel_after)
5728{
5729 struct sk_buff *msg;
5730 void *hdr;
5731 struct nlattr *nl_freq;
5732
fd2120ca 5733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6bad8766
LR		 5734 if (!msg)
5735 return;
5736
5737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
5738 if (!hdr) {
5739 nlmsg_free(msg);
5740 return;
5741 }
5742
5743 /*
5744 * Since we are applying the beacon hint to a wiphy we know its
5745 * wiphy_idx is valid
5746 */
5747 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
5748
5749 /* Before */
5750 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
5751 if (!nl_freq)
5752 goto nla_put_failure;
5753 if (nl80211_msg_put_channel(msg, channel_before))
5754 goto nla_put_failure;
5755 nla_nest_end(msg, nl_freq);
5756
5757 /* After */
5758 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
5759 if (!nl_freq)
5760 goto nla_put_failure;
5761 if (nl80211_msg_put_channel(msg, channel_after))
5762 goto nla_put_failure;
5763 nla_nest_end(msg, nl_freq);
5764
5765 if (genlmsg_end(msg, hdr) < 0) {
5766 nlmsg_free(msg);
5767 return;
5768 }
5769
463d0183
JB		 5770 rcu_read_lock();
5771 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
5772 GFP_ATOMIC);
5773 rcu_read_unlock();
6bad8766
LR		 5774
5775 return;
5776
5777nla_put_failure:
5778 genlmsg_cancel(msg, hdr);
5779 nlmsg_free(msg);
5780}
5781
9588bbd5
JM		 5782static void nl80211_send_remain_on_chan_event(
5783 int cmd, struct cfg80211_registered_device *rdev,
5784 struct net_device *netdev, u64 cookie,
5785 struct ieee80211_channel *chan,
5786 enum nl80211_channel_type channel_type,
5787 unsigned int duration, gfp_t gfp)
5788{
5789 struct sk_buff *msg;
5790 void *hdr;
5791
5792 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5793 if (!msg)
5794 return;
5795
5796 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
5797 if (!hdr) {
5798 nlmsg_free(msg);
5799 return;
5800 }
5801
5802 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5803 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5804 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
5805 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
5806 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5807
5808 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
5809 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
5810
5811 if (genlmsg_end(msg, hdr) < 0) {
5812 nlmsg_free(msg);
5813 return;
5814 }
5815
5816 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5817 nl80211_mlme_mcgrp.id, gfp);
5818 return;
5819
5820 nla_put_failure:
5821 genlmsg_cancel(msg, hdr);
5822 nlmsg_free(msg);
5823}
5824
5825void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
5826 struct net_device *netdev, u64 cookie,
5827 struct ieee80211_channel *chan,
5828 enum nl80211_channel_type channel_type,
5829 unsigned int duration, gfp_t gfp)
5830{
5831 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
5832 rdev, netdev, cookie, chan,
5833 channel_type, duration, gfp);
5834}
5835
5836void nl80211_send_remain_on_channel_cancel(
5837 struct cfg80211_registered_device *rdev, struct net_device *netdev,
5838 u64 cookie, struct ieee80211_channel *chan,
5839 enum nl80211_channel_type channel_type, gfp_t gfp)
5840{
5841 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
5842 rdev, netdev, cookie, chan,
5843 channel_type, 0, gfp);
5844}
5845
98b62183
JB		 5846void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
5847 struct net_device *dev, const u8 *mac_addr,
5848 struct station_info *sinfo, gfp_t gfp)
5849{
5850 struct sk_buff *msg;
5851
5852 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5853 if (!msg)
5854 return;
5855
5856 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
5857 nlmsg_free(msg);
5858 return;
5859 }
5860
5861 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5862 nl80211_mlme_mcgrp.id, gfp);
5863}
5864
2e161f78
JB		 5865int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
5866 struct net_device *netdev, u32 nlpid,
5867 int freq, const u8 *buf, size_t len, gfp_t gfp)
026331c4
JM		 5868{
5869 struct sk_buff *msg;
5870 void *hdr;
5871 int err;
5872
5873 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5874 if (!msg)
5875 return -ENOMEM;
5876
2e161f78 5877 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
026331c4
JM		 5878 if (!hdr) {
5879 nlmsg_free(msg);
5880 return -ENOMEM;
5881 }
5882
5883 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5884 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5885 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5886 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5887
5888 err = genlmsg_end(msg, hdr);
5889 if (err < 0) {
5890 nlmsg_free(msg);
5891 return err;
5892 }
5893
5894 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
5895 if (err < 0)
5896 return err;
5897 return 0;
5898
5899 nla_put_failure:
5900 genlmsg_cancel(msg, hdr);
5901 nlmsg_free(msg);
5902 return -ENOBUFS;
5903}
5904
2e161f78
JB		 5905void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
5906 struct net_device *netdev, u64 cookie,
5907 const u8 *buf, size_t len, bool ack,
5908 gfp_t gfp)
026331c4
JM		 5909{
5910 struct sk_buff *msg;
5911 void *hdr;
5912
5913 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
5914 if (!msg)
5915 return;
5916
2e161f78 5917 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
026331c4
JM		 5918 if (!hdr) {
5919 nlmsg_free(msg);
5920 return;
5921 }
5922
5923 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5924 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5925 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
5926 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5927 if (ack)
5928 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
5929
5930 if (genlmsg_end(msg, hdr) < 0) {
5931 nlmsg_free(msg);
5932 return;
5933 }
5934
5935 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
5936 return;
5937
5938 nla_put_failure:
5939 genlmsg_cancel(msg, hdr);
5940 nlmsg_free(msg);
5941}
5942
d6dc1a38
JO		 5943void
5944nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
5945 struct net_device *netdev,
5946 enum nl80211_cqm_rssi_threshold_event rssi_event,
5947 gfp_t gfp)
5948{
5949 struct sk_buff *msg;
5950 struct nlattr *pinfoattr;
5951 void *hdr;
5952
5953 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5954 if (!msg)
5955 return;
5956
5957 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
5958 if (!hdr) {
5959 nlmsg_free(msg);
5960 return;
5961 }
5962
5963 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5964 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
5965
5966 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
5967 if (!pinfoattr)
5968 goto nla_put_failure;
5969
5970 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
5971 rssi_event);
5972
5973 nla_nest_end(msg, pinfoattr);
5974
5975 if (genlmsg_end(msg, hdr) < 0) {
5976 nlmsg_free(msg);
5977 return;
5978 }
5979
5980 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
5981 nl80211_mlme_mcgrp.id, gfp);
5982 return;
5983
5984 nla_put_failure:
5985 genlmsg_cancel(msg, hdr);
5986 nlmsg_free(msg);
5987}
5988
c063dbf5
JB		 5989void
5990nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
5991 struct net_device *netdev, const u8 *peer,
5992 u32 num_packets, gfp_t gfp)
5993{
5994 struct sk_buff *msg;
5995 struct nlattr *pinfoattr;
5996 void *hdr;
5997
5998 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
5999 if (!msg)
6000 return;
6001
6002 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
6003 if (!hdr) {
6004 nlmsg_free(msg);
6005 return;
6006 }
6007
6008 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6009 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
6011
6012 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
6013 if (!pinfoattr)
6014 goto nla_put_failure;
6015
6016 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
6017
6018 nla_nest_end(msg, pinfoattr);
6019
6020 if (genlmsg_end(msg, hdr) < 0) {
6021 nlmsg_free(msg);
6022 return;
6023 }
6024
6025 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6026 nl80211_mlme_mcgrp.id, gfp);
6027 return;
6028
6029 nla_put_failure:
6030 genlmsg_cancel(msg, hdr);
6031 nlmsg_free(msg);
6032}
6033
026331c4
JM		 6034static int nl80211_netlink_notify(struct notifier_block * nb,
6035 unsigned long state,
6036 void *_notify)
6037{
6038 struct netlink_notify *notify = _notify;
6039 struct cfg80211_registered_device *rdev;
6040 struct wireless_dev *wdev;
6041
6042 if (state != NETLINK_URELEASE)
6043 return NOTIFY_DONE;
6044
6045 rcu_read_lock();
6046
6047 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
6048 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
2e161f78 6049 cfg80211_mlme_unregister_socket(wdev, notify->pid);
026331c4
JM		 6050
6051 rcu_read_unlock();
6052
6053 return NOTIFY_DONE;
6054}
6055
6056static struct notifier_block nl80211_netlink_notifier = {
6057 .notifier_call = nl80211_netlink_notify,
6058};
6059
55682965
JB		 6060/* initialisation/exit functions */
6061
6062int nl80211_init(void)
6063{
0d63cbb5 6064 int err;
55682965 6065
0d63cbb5
MM		 6066 err = genl_register_family_with_ops(&nl80211_fam,
6067 nl80211_ops, ARRAY_SIZE(nl80211_ops));
55682965
JB		 6068 if (err)
6069 return err;
6070
55682965
JB		 6071 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
6072 if (err)
6073 goto err_out;
6074
2a519311
JB		 6075 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
6076 if (err)
6077 goto err_out;
6078
73d54c9e
LR		 6079 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
6080 if (err)
6081 goto err_out;
6082
6039f6d2
JM		 6083 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
6084 if (err)
6085 goto err_out;
6086
aff89a9b
JB		 6087#ifdef CONFIG_NL80211_TESTMODE
6088 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
6089 if (err)
6090 goto err_out;
6091#endif
6092
026331c4
JM		 6093 err = netlink_register_notifier(&nl80211_netlink_notifier);
6094 if (err)
6095 goto err_out;
6096
55682965
JB		 6097 return 0;
6098 err_out:
6099 genl_unregister_family(&nl80211_fam);
6100 return err;
6101}
6102
6103void nl80211_exit(void)
6104{
026331c4 6105 netlink_unregister_notifier(&nl80211_netlink_notifier);
55682965
JB		 6106 genl_unregister_family(&nl80211_fam);
6107}
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