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ath6kl: Restrict memcpy to bounce buffer only for write request
[linux-2.6/btrfs-unstable.git] / net / wireless / nl80211.c
blobb3d3cf8931cb9a3c055df2e497943ec2500cfc51
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_ifindex(struct net *netns, struct nlattr **attrs,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 int ifindex;
55
56 if (!attrs[NL80211_ATTR_IFINDEX])
57 return -EINVAL;
58
59 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
60 *dev = dev_get_by_index(netns, ifindex);
61 if (!*dev)
62 return -ENODEV;
63
64 *rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
65 if (IS_ERR(*rdev)) {
66 dev_put(*dev);
67 return PTR_ERR(*rdev);
68 }
69
70 return 0;
71 }
72
73 /* policy for the attributes */
74 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
75 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
77 .len = 20-1 },
78 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
79 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
82 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
84 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
86
87 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
88 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
90
91 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
92 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
93
94 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
95 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
96 .len = WLAN_MAX_KEY_LEN },
97 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
98 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
99 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
100 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
101 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
102
103 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
104 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
105 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
106 .len = IEEE80211_MAX_DATA_LEN },
107 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
108 .len = IEEE80211_MAX_DATA_LEN },
109 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
110 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
111 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
112 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
113 .len = NL80211_MAX_SUPP_RATES },
114 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
115 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
116 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
117 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
118 .len = IEEE80211_MAX_MESH_ID_LEN },
119 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
120
121 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
122 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
123
124 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
125 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
128 .len = NL80211_MAX_SUPP_RATES },
129 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
130
131 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
132 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
133
134 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
135
136 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
137 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
138 .len = IEEE80211_MAX_DATA_LEN },
139 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
140 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
141
142 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
143 .len = IEEE80211_MAX_SSID_LEN },
144 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
145 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
146 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
147 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
148 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
149 [NL80211_ATTR_STA_FLAGS2] = {
150 .len = sizeof(struct nl80211_sta_flag_update),
151 },
152 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
153 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
154 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
156 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
157 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
158 [NL80211_ATTR_PID] = { .type = NLA_U32 },
159 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
160 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
161 .len = WLAN_PMKID_LEN },
162 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
163 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
164 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
165 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
166 .len = IEEE80211_MAX_DATA_LEN },
167 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
168 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
169 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
170 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
171 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
172 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
173 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
174 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
175 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
176 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
177 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
178 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
179 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
180 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
181 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
182 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
183 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
184 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
185 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
186 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
187 .len = IEEE80211_MAX_DATA_LEN },
188 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
191 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
192 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
193 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
194 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
195 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
196 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
197 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
198 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
199 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
200 .len = IEEE80211_MAX_DATA_LEN },
201 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
202 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
203 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
204 .len = NL80211_HT_CAPABILITY_LEN
205 },
206 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
207 };
208
209 /* policy for the key attributes */
210 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
211 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
212 [NL80211_KEY_IDX] = { .type = NLA_U8 },
213 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
214 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
215 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
216 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
217 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
218 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
219 };
220
221 /* policy for the key default flags */
222 static const struct nla_policy
223 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
224 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
225 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
226 };
227
228 /* policy for WoWLAN attributes */
229 static const struct nla_policy
230 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
231 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
232 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
233 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
234 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
235 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
236 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
237 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
238 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
239 };
240
241 /* policy for GTK rekey offload attributes */
242 static const struct nla_policy
243 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
244 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
245 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
246 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
247 };
248
249 static const struct nla_policy
250 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
251 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_SSID_LEN },
253 };
254
255 /* ifidx get helper */
256 static int nl80211_get_ifidx(struct netlink_callback *cb)
257 {
258 int res;
259
260 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
261 nl80211_fam.attrbuf, nl80211_fam.maxattr,
262 nl80211_policy);
263 if (res)
264 return res;
265
266 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
267 return -EINVAL;
268
269 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
270 if (!res)
271 return -EINVAL;
272 return res;
273 }
274
275 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
276 struct netlink_callback *cb,
277 struct cfg80211_registered_device **rdev,
278 struct net_device **dev)
279 {
280 int ifidx = cb->args[0];
281 int err;
282
283 if (!ifidx)
284 ifidx = nl80211_get_ifidx(cb);
285 if (ifidx < 0)
286 return ifidx;
287
288 cb->args[0] = ifidx;
289
290 rtnl_lock();
291
292 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
293 if (!*dev) {
294 err = -ENODEV;
295 goto out_rtnl;
296 }
297
298 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
299 if (IS_ERR(*rdev)) {
300 err = PTR_ERR(*rdev);
301 goto out_rtnl;
302 }
303
304 return 0;
305 out_rtnl:
306 rtnl_unlock();
307 return err;
308 }
309
310 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
311 {
312 cfg80211_unlock_rdev(rdev);
313 rtnl_unlock();
314 }
315
316 /* IE validation */
317 static bool is_valid_ie_attr(const struct nlattr *attr)
318 {
319 const u8 *pos;
320 int len;
321
322 if (!attr)
323 return true;
324
325 pos = nla_data(attr);
326 len = nla_len(attr);
327
328 while (len) {
329 u8 elemlen;
330
331 if (len < 2)
332 return false;
333 len -= 2;
334
335 elemlen = pos[1];
336 if (elemlen > len)
337 return false;
338
339 len -= elemlen;
340 pos += 2 + elemlen;
341 }
342
343 return true;
344 }
345
346 /* message building helper */
347 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
348 int flags, u8 cmd)
349 {
350 /* since there is no private header just add the generic one */
351 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
352 }
353
354 static int nl80211_msg_put_channel(struct sk_buff *msg,
355 struct ieee80211_channel *chan)
356 {
357 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
358 chan->center_freq);
359
360 if (chan->flags & IEEE80211_CHAN_DISABLED)
361 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
362 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
363 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
364 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
365 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
366 if (chan->flags & IEEE80211_CHAN_RADAR)
367 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
368
369 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
370 DBM_TO_MBM(chan->max_power));
371
372 return 0;
373
374 nla_put_failure:
375 return -ENOBUFS;
376 }
377
378 /* netlink command implementations */
379
380 struct key_parse {
381 struct key_params p;
382 int idx;
383 int type;
384 bool def, defmgmt;
385 bool def_uni, def_multi;
386 };
387
388 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
389 {
390 struct nlattr *tb[NL80211_KEY_MAX + 1];
391 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
392 nl80211_key_policy);
393 if (err)
394 return err;
395
396 k->def = !!tb[NL80211_KEY_DEFAULT];
397 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
398
399 if (k->def) {
400 k->def_uni = true;
401 k->def_multi = true;
402 }
403 if (k->defmgmt)
404 k->def_multi = true;
405
406 if (tb[NL80211_KEY_IDX])
407 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
408
409 if (tb[NL80211_KEY_DATA]) {
410 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
411 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
412 }
413
414 if (tb[NL80211_KEY_SEQ]) {
415 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
416 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
417 }
418
419 if (tb[NL80211_KEY_CIPHER])
420 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
421
422 if (tb[NL80211_KEY_TYPE]) {
423 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
424 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
425 return -EINVAL;
426 }
427
428 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
429 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
430 int err = nla_parse_nested(kdt,
431 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
432 tb[NL80211_KEY_DEFAULT_TYPES],
433 nl80211_key_default_policy);
434 if (err)
435 return err;
436
437 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
438 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
439 }
440
441 return 0;
442 }
443
444 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
445 {
446 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
447 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
448 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
449 }
450
451 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
452 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
453 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
454 }
455
456 if (info->attrs[NL80211_ATTR_KEY_IDX])
457 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
458
459 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
460 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
461
462 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
463 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
464
465 if (k->def) {
466 k->def_uni = true;
467 k->def_multi = true;
468 }
469 if (k->defmgmt)
470 k->def_multi = true;
471
472 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
473 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
474 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
475 return -EINVAL;
476 }
477
478 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
479 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
480 int err = nla_parse_nested(
481 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
482 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
483 nl80211_key_default_policy);
484 if (err)
485 return err;
486
487 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
488 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
489 }
490
491 return 0;
492 }
493
494 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
495 {
496 int err;
497
498 memset(k, 0, sizeof(*k));
499 k->idx = -1;
500 k->type = -1;
501
502 if (info->attrs[NL80211_ATTR_KEY])
503 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
504 else
505 err = nl80211_parse_key_old(info, k);
506
507 if (err)
508 return err;
509
510 if (k->def && k->defmgmt)
511 return -EINVAL;
512
513 if (k->defmgmt) {
514 if (k->def_uni || !k->def_multi)
515 return -EINVAL;
516 }
517
518 if (k->idx != -1) {
519 if (k->defmgmt) {
520 if (k->idx < 4 || k->idx > 5)
521 return -EINVAL;
522 } else if (k->def) {
523 if (k->idx < 0 || k->idx > 3)
524 return -EINVAL;
525 } else {
526 if (k->idx < 0 || k->idx > 5)
527 return -EINVAL;
528 }
529 }
530
531 return 0;
532 }
533
534 static struct cfg80211_cached_keys *
535 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
536 struct nlattr *keys)
537 {
538 struct key_parse parse;
539 struct nlattr *key;
540 struct cfg80211_cached_keys *result;
541 int rem, err, def = 0;
542
543 result = kzalloc(sizeof(*result), GFP_KERNEL);
544 if (!result)
545 return ERR_PTR(-ENOMEM);
546
547 result->def = -1;
548 result->defmgmt = -1;
549
550 nla_for_each_nested(key, keys, rem) {
551 memset(&parse, 0, sizeof(parse));
552 parse.idx = -1;
553
554 err = nl80211_parse_key_new(key, &parse);
555 if (err)
556 goto error;
557 err = -EINVAL;
558 if (!parse.p.key)
559 goto error;
560 if (parse.idx < 0 || parse.idx > 4)
561 goto error;
562 if (parse.def) {
563 if (def)
564 goto error;
565 def = 1;
566 result->def = parse.idx;
567 if (!parse.def_uni || !parse.def_multi)
568 goto error;
569 } else if (parse.defmgmt)
570 goto error;
571 err = cfg80211_validate_key_settings(rdev, &parse.p,
572 parse.idx, false, NULL);
573 if (err)
574 goto error;
575 result->params[parse.idx].cipher = parse.p.cipher;
576 result->params[parse.idx].key_len = parse.p.key_len;
577 result->params[parse.idx].key = result->data[parse.idx];
578 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
579 }
580
581 return result;
582 error:
583 kfree(result);
584 return ERR_PTR(err);
585 }
586
587 static int nl80211_key_allowed(struct wireless_dev *wdev)
588 {
589 ASSERT_WDEV_LOCK(wdev);
590
591 switch (wdev->iftype) {
592 case NL80211_IFTYPE_AP:
593 case NL80211_IFTYPE_AP_VLAN:
594 case NL80211_IFTYPE_P2P_GO:
595 case NL80211_IFTYPE_MESH_POINT:
596 break;
597 case NL80211_IFTYPE_ADHOC:
598 if (!wdev->current_bss)
599 return -ENOLINK;
600 break;
601 case NL80211_IFTYPE_STATION:
602 case NL80211_IFTYPE_P2P_CLIENT:
603 if (wdev->sme_state != CFG80211_SME_CONNECTED)
604 return -ENOLINK;
605 break;
606 default:
607 return -EINVAL;
608 }
609
610 return 0;
611 }
612
613 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
614 {
615 struct nlattr *nl_modes = nla_nest_start(msg, attr);
616 int i;
617
618 if (!nl_modes)
619 goto nla_put_failure;
620
621 i = 0;
622 while (ifmodes) {
623 if (ifmodes & 1)
624 NLA_PUT_FLAG(msg, i);
625 ifmodes >>= 1;
626 i++;
627 }
628
629 nla_nest_end(msg, nl_modes);
630 return 0;
631
632 nla_put_failure:
633 return -ENOBUFS;
634 }
635
636 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
637 struct sk_buff *msg)
638 {
639 struct nlattr *nl_combis;
640 int i, j;
641
642 nl_combis = nla_nest_start(msg,
643 NL80211_ATTR_INTERFACE_COMBINATIONS);
644 if (!nl_combis)
645 goto nla_put_failure;
646
647 for (i = 0; i < wiphy->n_iface_combinations; i++) {
648 const struct ieee80211_iface_combination *c;
649 struct nlattr *nl_combi, *nl_limits;
650
651 c = &wiphy->iface_combinations[i];
652
653 nl_combi = nla_nest_start(msg, i + 1);
654 if (!nl_combi)
655 goto nla_put_failure;
656
657 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
658 if (!nl_limits)
659 goto nla_put_failure;
660
661 for (j = 0; j < c->n_limits; j++) {
662 struct nlattr *nl_limit;
663
664 nl_limit = nla_nest_start(msg, j + 1);
665 if (!nl_limit)
666 goto nla_put_failure;
667 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
668 c->limits[j].max);
669 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
670 c->limits[j].types))
671 goto nla_put_failure;
672 nla_nest_end(msg, nl_limit);
673 }
674
675 nla_nest_end(msg, nl_limits);
676
677 if (c->beacon_int_infra_match)
678 NLA_PUT_FLAG(msg,
679 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
680 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
681 c->num_different_channels);
682 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
683 c->max_interfaces);
684
685 nla_nest_end(msg, nl_combi);
686 }
687
688 nla_nest_end(msg, nl_combis);
689
690 return 0;
691 nla_put_failure:
692 return -ENOBUFS;
693 }
694
695 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
696 struct cfg80211_registered_device *dev)
697 {
698 void *hdr;
699 struct nlattr *nl_bands, *nl_band;
700 struct nlattr *nl_freqs, *nl_freq;
701 struct nlattr *nl_rates, *nl_rate;
702 struct nlattr *nl_cmds;
703 enum ieee80211_band band;
704 struct ieee80211_channel *chan;
705 struct ieee80211_rate *rate;
706 int i;
707 const struct ieee80211_txrx_stypes *mgmt_stypes =
708 dev->wiphy.mgmt_stypes;
709
710 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
711 if (!hdr)
712 return -1;
713
714 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
715 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
716
717 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
718 cfg80211_rdev_list_generation);
719
720 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
721 dev->wiphy.retry_short);
722 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
723 dev->wiphy.retry_long);
724 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
725 dev->wiphy.frag_threshold);
726 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
727 dev->wiphy.rts_threshold);
728 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
729 dev->wiphy.coverage_class);
730 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
731 dev->wiphy.max_scan_ssids);
732 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
733 dev->wiphy.max_sched_scan_ssids);
734 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
735 dev->wiphy.max_scan_ie_len);
736 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
737 dev->wiphy.max_sched_scan_ie_len);
738 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
739 dev->wiphy.max_match_sets);
740
741 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
742 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
743 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
744 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
745 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
746 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
747 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
748 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
749 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
750 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
751 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
752 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
753
754 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
755 sizeof(u32) * dev->wiphy.n_cipher_suites,
756 dev->wiphy.cipher_suites);
757
758 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
759 dev->wiphy.max_num_pmkids);
760
761 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
762 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
763
764 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
765 dev->wiphy.available_antennas_tx);
766 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
767 dev->wiphy.available_antennas_rx);
768
769 if (dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD)
770 NLA_PUT_U32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
771 dev->wiphy.probe_resp_offload);
772
773 if ((dev->wiphy.available_antennas_tx ||
774 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
775 u32 tx_ant = 0, rx_ant = 0;
776 int res;
777 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
778 if (!res) {
779 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
780 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
781 }
782 }
783
784 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
785 dev->wiphy.interface_modes))
786 goto nla_put_failure;
787
788 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
789 if (!nl_bands)
790 goto nla_put_failure;
791
792 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
793 if (!dev->wiphy.bands[band])
794 continue;
795
796 nl_band = nla_nest_start(msg, band);
797 if (!nl_band)
798 goto nla_put_failure;
799
800 /* add HT info */
801 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
802 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
803 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
804 &dev->wiphy.bands[band]->ht_cap.mcs);
805 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
806 dev->wiphy.bands[band]->ht_cap.cap);
807 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
808 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
809 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
810 dev->wiphy.bands[band]->ht_cap.ampdu_density);
811 }
812
813 /* add frequencies */
814 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
815 if (!nl_freqs)
816 goto nla_put_failure;
817
818 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
819 nl_freq = nla_nest_start(msg, i);
820 if (!nl_freq)
821 goto nla_put_failure;
822
823 chan = &dev->wiphy.bands[band]->channels[i];
824
825 if (nl80211_msg_put_channel(msg, chan))
826 goto nla_put_failure;
827
828 nla_nest_end(msg, nl_freq);
829 }
830
831 nla_nest_end(msg, nl_freqs);
832
833 /* add bitrates */
834 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
835 if (!nl_rates)
836 goto nla_put_failure;
837
838 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
839 nl_rate = nla_nest_start(msg, i);
840 if (!nl_rate)
841 goto nla_put_failure;
842
843 rate = &dev->wiphy.bands[band]->bitrates[i];
844 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
845 rate->bitrate);
846 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
847 NLA_PUT_FLAG(msg,
848 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
849
850 nla_nest_end(msg, nl_rate);
851 }
852
853 nla_nest_end(msg, nl_rates);
854
855 nla_nest_end(msg, nl_band);
856 }
857 nla_nest_end(msg, nl_bands);
858
859 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
860 if (!nl_cmds)
861 goto nla_put_failure;
862
863 i = 0;
864 #define CMD(op, n) \
865 do { \
866 if (dev->ops->op) { \
867 i++; \
868 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
869 } \
870 } while (0)
871
872 CMD(add_virtual_intf, NEW_INTERFACE);
873 CMD(change_virtual_intf, SET_INTERFACE);
874 CMD(add_key, NEW_KEY);
875 CMD(add_beacon, NEW_BEACON);
876 CMD(add_station, NEW_STATION);
877 CMD(add_mpath, NEW_MPATH);
878 CMD(update_mesh_config, SET_MESH_CONFIG);
879 CMD(change_bss, SET_BSS);
880 CMD(auth, AUTHENTICATE);
881 CMD(assoc, ASSOCIATE);
882 CMD(deauth, DEAUTHENTICATE);
883 CMD(disassoc, DISASSOCIATE);
884 CMD(join_ibss, JOIN_IBSS);
885 CMD(join_mesh, JOIN_MESH);
886 CMD(set_pmksa, SET_PMKSA);
887 CMD(del_pmksa, DEL_PMKSA);
888 CMD(flush_pmksa, FLUSH_PMKSA);
889 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
890 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
891 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
892 CMD(mgmt_tx, FRAME);
893 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
894 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
895 i++;
896 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
897 }
898 CMD(set_channel, SET_CHANNEL);
899 CMD(set_wds_peer, SET_WDS_PEER);
900 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
901 CMD(tdls_mgmt, TDLS_MGMT);
902 CMD(tdls_oper, TDLS_OPER);
903 }
904 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
905 CMD(sched_scan_start, START_SCHED_SCAN);
906 CMD(probe_client, PROBE_CLIENT);
907 CMD(set_noack_map, SET_NOACK_MAP);
908 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
909 i++;
910 NLA_PUT_U32(msg, i, NL80211_CMD_REGISTER_BEACONS);
911 }
912
913 #ifdef CONFIG_NL80211_TESTMODE
914 CMD(testmode_cmd, TESTMODE);
915 #endif
916
917 #undef CMD
918
919 if (dev->ops->connect || dev->ops->auth) {
920 i++;
921 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
922 }
923
924 if (dev->ops->disconnect || dev->ops->deauth) {
925 i++;
926 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
927 }
928
929 nla_nest_end(msg, nl_cmds);
930
931 if (dev->ops->remain_on_channel &&
932 dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
933 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
934 dev->wiphy.max_remain_on_channel_duration);
935
936 if (dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)
937 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
938
939 if (mgmt_stypes) {
940 u16 stypes;
941 struct nlattr *nl_ftypes, *nl_ifs;
942 enum nl80211_iftype ift;
943
944 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
945 if (!nl_ifs)
946 goto nla_put_failure;
947
948 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
949 nl_ftypes = nla_nest_start(msg, ift);
950 if (!nl_ftypes)
951 goto nla_put_failure;
952 i = 0;
953 stypes = mgmt_stypes[ift].tx;
954 while (stypes) {
955 if (stypes & 1)
956 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
957 (i << 4) | IEEE80211_FTYPE_MGMT);
958 stypes >>= 1;
959 i++;
960 }
961 nla_nest_end(msg, nl_ftypes);
962 }
963
964 nla_nest_end(msg, nl_ifs);
965
966 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
967 if (!nl_ifs)
968 goto nla_put_failure;
969
970 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
971 nl_ftypes = nla_nest_start(msg, ift);
972 if (!nl_ftypes)
973 goto nla_put_failure;
974 i = 0;
975 stypes = mgmt_stypes[ift].rx;
976 while (stypes) {
977 if (stypes & 1)
978 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
979 (i << 4) | IEEE80211_FTYPE_MGMT);
980 stypes >>= 1;
981 i++;
982 }
983 nla_nest_end(msg, nl_ftypes);
984 }
985 nla_nest_end(msg, nl_ifs);
986 }
987
988 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
989 struct nlattr *nl_wowlan;
990
991 nl_wowlan = nla_nest_start(msg,
992 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
993 if (!nl_wowlan)
994 goto nla_put_failure;
995
996 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
997 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
998 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
999 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
1000 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
1001 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
1002 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
1003 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
1004 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
1005 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
1006 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
1007 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
1008 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
1009 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
1010 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
1011 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
1012 if (dev->wiphy.wowlan.n_patterns) {
1013 struct nl80211_wowlan_pattern_support pat = {
1014 .max_patterns = dev->wiphy.wowlan.n_patterns,
1015 .min_pattern_len =
1016 dev->wiphy.wowlan.pattern_min_len,
1017 .max_pattern_len =
1018 dev->wiphy.wowlan.pattern_max_len,
1019 };
1020 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1021 sizeof(pat), &pat);
1022 }
1023
1024 nla_nest_end(msg, nl_wowlan);
1025 }
1026
1027 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1028 dev->wiphy.software_iftypes))
1029 goto nla_put_failure;
1030
1031 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1032 goto nla_put_failure;
1033
1034 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME)
1035 NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_SME,
1036 dev->wiphy.ap_sme_capa);
1037
1038 NLA_PUT_U32(msg, NL80211_ATTR_FEATURE_FLAGS, dev->wiphy.features);
1039
1040 if (dev->wiphy.ht_capa_mod_mask)
1041 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1042 sizeof(*dev->wiphy.ht_capa_mod_mask),
1043 dev->wiphy.ht_capa_mod_mask);
1044
1045 return genlmsg_end(msg, hdr);
1046
1047 nla_put_failure:
1048 genlmsg_cancel(msg, hdr);
1049 return -EMSGSIZE;
1050 }
1051
1052 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1053 {
1054 int idx = 0;
1055 int start = cb->args[0];
1056 struct cfg80211_registered_device *dev;
1057
1058 mutex_lock(&cfg80211_mutex);
1059 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1060 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1061 continue;
1062 if (++idx <= start)
1063 continue;
1064 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1065 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1066 dev) < 0) {
1067 idx--;
1068 break;
1069 }
1070 }
1071 mutex_unlock(&cfg80211_mutex);
1072
1073 cb->args[0] = idx;
1074
1075 return skb->len;
1076 }
1077
1078 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1079 {
1080 struct sk_buff *msg;
1081 struct cfg80211_registered_device *dev = info->user_ptr[0];
1082
1083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1084 if (!msg)
1085 return -ENOMEM;
1086
1087 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1088 nlmsg_free(msg);
1089 return -ENOBUFS;
1090 }
1091
1092 return genlmsg_reply(msg, info);
1093 }
1094
1095 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1096 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1097 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1098 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1099 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1100 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1101 };
1102
1103 static int parse_txq_params(struct nlattr *tb[],
1104 struct ieee80211_txq_params *txq_params)
1105 {
1106 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1107 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1108 !tb[NL80211_TXQ_ATTR_AIFS])
1109 return -EINVAL;
1110
1111 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1112 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1113 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1114 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1115 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1116
1117 return 0;
1118 }
1119
1120 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1121 {
1122 /*
1123 * You can only set the channel explicitly for AP, mesh
1124 * and WDS type interfaces; all others have their channel
1125 * managed via their respective "establish a connection"
1126 * command (connect, join, ...)
1127 *
1128 * Monitors are special as they are normally slaved to
1129 * whatever else is going on, so they behave as though
1130 * you tried setting the wiphy channel itself.
1131 */
1132 return !wdev ||
1133 wdev->iftype == NL80211_IFTYPE_AP ||
1134 wdev->iftype == NL80211_IFTYPE_WDS ||
1135 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1136 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1137 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1138 }
1139
1140 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1141 struct wireless_dev *wdev,
1142 struct genl_info *info)
1143 {
1144 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1145 u32 freq;
1146 int result;
1147
1148 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1149 return -EINVAL;
1150
1151 if (!nl80211_can_set_dev_channel(wdev))
1152 return -EOPNOTSUPP;
1153
1154 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1155 channel_type = nla_get_u32(info->attrs[
1156 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1157 if (channel_type != NL80211_CHAN_NO_HT &&
1158 channel_type != NL80211_CHAN_HT20 &&
1159 channel_type != NL80211_CHAN_HT40PLUS &&
1160 channel_type != NL80211_CHAN_HT40MINUS)
1161 return -EINVAL;
1162 }
1163
1164 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1165
1166 mutex_lock(&rdev->devlist_mtx);
1167 if (wdev) {
1168 wdev_lock(wdev);
1169 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1170 wdev_unlock(wdev);
1171 } else {
1172 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1173 }
1174 mutex_unlock(&rdev->devlist_mtx);
1175
1176 return result;
1177 }
1178
1179 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1180 {
1181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1182 struct net_device *netdev = info->user_ptr[1];
1183
1184 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1185 }
1186
1187 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1188 {
1189 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1190 struct net_device *dev = info->user_ptr[1];
1191 struct wireless_dev *wdev = dev->ieee80211_ptr;
1192 const u8 *bssid;
1193
1194 if (!info->attrs[NL80211_ATTR_MAC])
1195 return -EINVAL;
1196
1197 if (netif_running(dev))
1198 return -EBUSY;
1199
1200 if (!rdev->ops->set_wds_peer)
1201 return -EOPNOTSUPP;
1202
1203 if (wdev->iftype != NL80211_IFTYPE_WDS)
1204 return -EOPNOTSUPP;
1205
1206 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1207 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1208 }
1209
1210
1211 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1212 {
1213 struct cfg80211_registered_device *rdev;
1214 struct net_device *netdev = NULL;
1215 struct wireless_dev *wdev;
1216 int result = 0, rem_txq_params = 0;
1217 struct nlattr *nl_txq_params;
1218 u32 changed;
1219 u8 retry_short = 0, retry_long = 0;
1220 u32 frag_threshold = 0, rts_threshold = 0;
1221 u8 coverage_class = 0;
1222
1223 /*
1224 * Try to find the wiphy and netdev. Normally this
1225 * function shouldn't need the netdev, but this is
1226 * done for backward compatibility -- previously
1227 * setting the channel was done per wiphy, but now
1228 * it is per netdev. Previous userland like hostapd
1229 * also passed a netdev to set_wiphy, so that it is
1230 * possible to let that go to the right netdev!
1231 */
1232 mutex_lock(&cfg80211_mutex);
1233
1234 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1235 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1236
1237 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1238 if (netdev && netdev->ieee80211_ptr) {
1239 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1240 mutex_lock(&rdev->mtx);
1241 } else
1242 netdev = NULL;
1243 }
1244
1245 if (!netdev) {
1246 rdev = __cfg80211_rdev_from_info(info);
1247 if (IS_ERR(rdev)) {
1248 mutex_unlock(&cfg80211_mutex);
1249 return PTR_ERR(rdev);
1250 }
1251 wdev = NULL;
1252 netdev = NULL;
1253 result = 0;
1254
1255 mutex_lock(&rdev->mtx);
1256 } else if (netif_running(netdev) &&
1257 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1258 wdev = netdev->ieee80211_ptr;
1259 else
1260 wdev = NULL;
1261
1262 /*
1263 * end workaround code, by now the rdev is available
1264 * and locked, and wdev may or may not be NULL.
1265 */
1266
1267 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1268 result = cfg80211_dev_rename(
1269 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1270
1271 mutex_unlock(&cfg80211_mutex);
1272
1273 if (result)
1274 goto bad_res;
1275
1276 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1277 struct ieee80211_txq_params txq_params;
1278 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1279
1280 if (!rdev->ops->set_txq_params) {
1281 result = -EOPNOTSUPP;
1282 goto bad_res;
1283 }
1284
1285 if (!netdev) {
1286 result = -EINVAL;
1287 goto bad_res;
1288 }
1289
1290 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1291 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1292 result = -EINVAL;
1293 goto bad_res;
1294 }
1295
1296 nla_for_each_nested(nl_txq_params,
1297 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1298 rem_txq_params) {
1299 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1300 nla_data(nl_txq_params),
1301 nla_len(nl_txq_params),
1302 txq_params_policy);
1303 result = parse_txq_params(tb, &txq_params);
1304 if (result)
1305 goto bad_res;
1306
1307 result = rdev->ops->set_txq_params(&rdev->wiphy,
1308 netdev,
1309 &txq_params);
1310 if (result)
1311 goto bad_res;
1312 }
1313 }
1314
1315 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1316 result = __nl80211_set_channel(rdev, wdev, info);
1317 if (result)
1318 goto bad_res;
1319 }
1320
1321 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1322 enum nl80211_tx_power_setting type;
1323 int idx, mbm = 0;
1324
1325 if (!rdev->ops->set_tx_power) {
1326 result = -EOPNOTSUPP;
1327 goto bad_res;
1328 }
1329
1330 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1331 type = nla_get_u32(info->attrs[idx]);
1332
1333 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1334 (type != NL80211_TX_POWER_AUTOMATIC)) {
1335 result = -EINVAL;
1336 goto bad_res;
1337 }
1338
1339 if (type != NL80211_TX_POWER_AUTOMATIC) {
1340 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1341 mbm = nla_get_u32(info->attrs[idx]);
1342 }
1343
1344 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1345 if (result)
1346 goto bad_res;
1347 }
1348
1349 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1350 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1351 u32 tx_ant, rx_ant;
1352 if ((!rdev->wiphy.available_antennas_tx &&
1353 !rdev->wiphy.available_antennas_rx) ||
1354 !rdev->ops->set_antenna) {
1355 result = -EOPNOTSUPP;
1356 goto bad_res;
1357 }
1358
1359 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1360 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1361
1362 /* reject antenna configurations which don't match the
1363 * available antenna masks, except for the "all" mask */
1364 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1365 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1366 result = -EINVAL;
1367 goto bad_res;
1368 }
1369
1370 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1371 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1372
1373 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1374 if (result)
1375 goto bad_res;
1376 }
1377
1378 changed = 0;
1379
1380 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1381 retry_short = nla_get_u8(
1382 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1383 if (retry_short == 0) {
1384 result = -EINVAL;
1385 goto bad_res;
1386 }
1387 changed |= WIPHY_PARAM_RETRY_SHORT;
1388 }
1389
1390 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1391 retry_long = nla_get_u8(
1392 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1393 if (retry_long == 0) {
1394 result = -EINVAL;
1395 goto bad_res;
1396 }
1397 changed |= WIPHY_PARAM_RETRY_LONG;
1398 }
1399
1400 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1401 frag_threshold = nla_get_u32(
1402 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1403 if (frag_threshold < 256) {
1404 result = -EINVAL;
1405 goto bad_res;
1406 }
1407 if (frag_threshold != (u32) -1) {
1408 /*
1409 * Fragments (apart from the last one) are required to
1410 * have even length. Make the fragmentation code
1411 * simpler by stripping LSB should someone try to use
1412 * odd threshold value.
1413 */
1414 frag_threshold &= ~0x1;
1415 }
1416 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1417 }
1418
1419 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1420 rts_threshold = nla_get_u32(
1421 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1422 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1423 }
1424
1425 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1426 coverage_class = nla_get_u8(
1427 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1428 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1429 }
1430
1431 if (changed) {
1432 u8 old_retry_short, old_retry_long;
1433 u32 old_frag_threshold, old_rts_threshold;
1434 u8 old_coverage_class;
1435
1436 if (!rdev->ops->set_wiphy_params) {
1437 result = -EOPNOTSUPP;
1438 goto bad_res;
1439 }
1440
1441 old_retry_short = rdev->wiphy.retry_short;
1442 old_retry_long = rdev->wiphy.retry_long;
1443 old_frag_threshold = rdev->wiphy.frag_threshold;
1444 old_rts_threshold = rdev->wiphy.rts_threshold;
1445 old_coverage_class = rdev->wiphy.coverage_class;
1446
1447 if (changed & WIPHY_PARAM_RETRY_SHORT)
1448 rdev->wiphy.retry_short = retry_short;
1449 if (changed & WIPHY_PARAM_RETRY_LONG)
1450 rdev->wiphy.retry_long = retry_long;
1451 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1452 rdev->wiphy.frag_threshold = frag_threshold;
1453 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1454 rdev->wiphy.rts_threshold = rts_threshold;
1455 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1456 rdev->wiphy.coverage_class = coverage_class;
1457
1458 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1459 if (result) {
1460 rdev->wiphy.retry_short = old_retry_short;
1461 rdev->wiphy.retry_long = old_retry_long;
1462 rdev->wiphy.frag_threshold = old_frag_threshold;
1463 rdev->wiphy.rts_threshold = old_rts_threshold;
1464 rdev->wiphy.coverage_class = old_coverage_class;
1465 }
1466 }
1467
1468 bad_res:
1469 mutex_unlock(&rdev->mtx);
1470 if (netdev)
1471 dev_put(netdev);
1472 return result;
1473 }
1474
1475
1476 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1477 struct cfg80211_registered_device *rdev,
1478 struct net_device *dev)
1479 {
1480 void *hdr;
1481
1482 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1483 if (!hdr)
1484 return -1;
1485
1486 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1487 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1488 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1489 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1490
1491 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1492 rdev->devlist_generation ^
1493 (cfg80211_rdev_list_generation << 2));
1494
1495 return genlmsg_end(msg, hdr);
1496
1497 nla_put_failure:
1498 genlmsg_cancel(msg, hdr);
1499 return -EMSGSIZE;
1500 }
1501
1502 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1503 {
1504 int wp_idx = 0;
1505 int if_idx = 0;
1506 int wp_start = cb->args[0];
1507 int if_start = cb->args[1];
1508 struct cfg80211_registered_device *rdev;
1509 struct wireless_dev *wdev;
1510
1511 mutex_lock(&cfg80211_mutex);
1512 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1513 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1514 continue;
1515 if (wp_idx < wp_start) {
1516 wp_idx++;
1517 continue;
1518 }
1519 if_idx = 0;
1520
1521 mutex_lock(&rdev->devlist_mtx);
1522 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1523 if (if_idx < if_start) {
1524 if_idx++;
1525 continue;
1526 }
1527 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1528 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1529 rdev, wdev->netdev) < 0) {
1530 mutex_unlock(&rdev->devlist_mtx);
1531 goto out;
1532 }
1533 if_idx++;
1534 }
1535 mutex_unlock(&rdev->devlist_mtx);
1536
1537 wp_idx++;
1538 }
1539 out:
1540 mutex_unlock(&cfg80211_mutex);
1541
1542 cb->args[0] = wp_idx;
1543 cb->args[1] = if_idx;
1544
1545 return skb->len;
1546 }
1547
1548 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1549 {
1550 struct sk_buff *msg;
1551 struct cfg80211_registered_device *dev = info->user_ptr[0];
1552 struct net_device *netdev = info->user_ptr[1];
1553
1554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1555 if (!msg)
1556 return -ENOMEM;
1557
1558 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1559 dev, netdev) < 0) {
1560 nlmsg_free(msg);
1561 return -ENOBUFS;
1562 }
1563
1564 return genlmsg_reply(msg, info);
1565 }
1566
1567 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1568 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1569 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1570 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1571 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1572 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1573 };
1574
1575 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1576 {
1577 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1578 int flag;
1579
1580 *mntrflags = 0;
1581
1582 if (!nla)
1583 return -EINVAL;
1584
1585 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1586 nla, mntr_flags_policy))
1587 return -EINVAL;
1588
1589 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1590 if (flags[flag])
1591 *mntrflags |= (1<<flag);
1592
1593 return 0;
1594 }
1595
1596 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1597 struct net_device *netdev, u8 use_4addr,
1598 enum nl80211_iftype iftype)
1599 {
1600 if (!use_4addr) {
1601 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1602 return -EBUSY;
1603 return 0;
1604 }
1605
1606 switch (iftype) {
1607 case NL80211_IFTYPE_AP_VLAN:
1608 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1609 return 0;
1610 break;
1611 case NL80211_IFTYPE_STATION:
1612 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1613 return 0;
1614 break;
1615 default:
1616 break;
1617 }
1618
1619 return -EOPNOTSUPP;
1620 }
1621
1622 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1623 {
1624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1625 struct vif_params params;
1626 int err;
1627 enum nl80211_iftype otype, ntype;
1628 struct net_device *dev = info->user_ptr[1];
1629 u32 _flags, *flags = NULL;
1630 bool change = false;
1631
1632 memset(&params, 0, sizeof(params));
1633
1634 otype = ntype = dev->ieee80211_ptr->iftype;
1635
1636 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1637 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1638 if (otype != ntype)
1639 change = true;
1640 if (ntype > NL80211_IFTYPE_MAX)
1641 return -EINVAL;
1642 }
1643
1644 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1645 struct wireless_dev *wdev = dev->ieee80211_ptr;
1646
1647 if (ntype != NL80211_IFTYPE_MESH_POINT)
1648 return -EINVAL;
1649 if (netif_running(dev))
1650 return -EBUSY;
1651
1652 wdev_lock(wdev);
1653 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1654 IEEE80211_MAX_MESH_ID_LEN);
1655 wdev->mesh_id_up_len =
1656 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1657 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1658 wdev->mesh_id_up_len);
1659 wdev_unlock(wdev);
1660 }
1661
1662 if (info->attrs[NL80211_ATTR_4ADDR]) {
1663 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1664 change = true;
1665 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1666 if (err)
1667 return err;
1668 } else {
1669 params.use_4addr = -1;
1670 }
1671
1672 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1673 if (ntype != NL80211_IFTYPE_MONITOR)
1674 return -EINVAL;
1675 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1676 &_flags);
1677 if (err)
1678 return err;
1679
1680 flags = &_flags;
1681 change = true;
1682 }
1683
1684 if (change)
1685 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1686 else
1687 err = 0;
1688
1689 if (!err && params.use_4addr != -1)
1690 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1691
1692 return err;
1693 }
1694
1695 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1696 {
1697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1698 struct vif_params params;
1699 struct net_device *dev;
1700 int err;
1701 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1702 u32 flags;
1703
1704 memset(&params, 0, sizeof(params));
1705
1706 if (!info->attrs[NL80211_ATTR_IFNAME])
1707 return -EINVAL;
1708
1709 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1710 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1711 if (type > NL80211_IFTYPE_MAX)
1712 return -EINVAL;
1713 }
1714
1715 if (!rdev->ops->add_virtual_intf ||
1716 !(rdev->wiphy.interface_modes & (1 << type)))
1717 return -EOPNOTSUPP;
1718
1719 if (info->attrs[NL80211_ATTR_4ADDR]) {
1720 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1721 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1722 if (err)
1723 return err;
1724 }
1725
1726 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1727 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1728 &flags);
1729 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1730 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1731 type, err ? NULL : &flags, &params);
1732 if (IS_ERR(dev))
1733 return PTR_ERR(dev);
1734
1735 if (type == NL80211_IFTYPE_MESH_POINT &&
1736 info->attrs[NL80211_ATTR_MESH_ID]) {
1737 struct wireless_dev *wdev = dev->ieee80211_ptr;
1738
1739 wdev_lock(wdev);
1740 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1741 IEEE80211_MAX_MESH_ID_LEN);
1742 wdev->mesh_id_up_len =
1743 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1744 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1745 wdev->mesh_id_up_len);
1746 wdev_unlock(wdev);
1747 }
1748
1749 return 0;
1750 }
1751
1752 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1753 {
1754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1755 struct net_device *dev = info->user_ptr[1];
1756
1757 if (!rdev->ops->del_virtual_intf)
1758 return -EOPNOTSUPP;
1759
1760 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1761 }
1762
1763 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1764 {
1765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1766 struct net_device *dev = info->user_ptr[1];
1767 u16 noack_map;
1768
1769 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1770 return -EINVAL;
1771
1772 if (!rdev->ops->set_noack_map)
1773 return -EOPNOTSUPP;
1774
1775 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1776
1777 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1778 }
1779
1780 struct get_key_cookie {
1781 struct sk_buff *msg;
1782 int error;
1783 int idx;
1784 };
1785
1786 static void get_key_callback(void *c, struct key_params *params)
1787 {
1788 struct nlattr *key;
1789 struct get_key_cookie *cookie = c;
1790
1791 if (params->key)
1792 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1793 params->key_len, params->key);
1794
1795 if (params->seq)
1796 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1797 params->seq_len, params->seq);
1798
1799 if (params->cipher)
1800 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1801 params->cipher);
1802
1803 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1804 if (!key)
1805 goto nla_put_failure;
1806
1807 if (params->key)
1808 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1809 params->key_len, params->key);
1810
1811 if (params->seq)
1812 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1813 params->seq_len, params->seq);
1814
1815 if (params->cipher)
1816 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1817 params->cipher);
1818
1819 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1820
1821 nla_nest_end(cookie->msg, key);
1822
1823 return;
1824 nla_put_failure:
1825 cookie->error = 1;
1826 }
1827
1828 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1829 {
1830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1831 int err;
1832 struct net_device *dev = info->user_ptr[1];
1833 u8 key_idx = 0;
1834 const u8 *mac_addr = NULL;
1835 bool pairwise;
1836 struct get_key_cookie cookie = {
1837 .error = 0,
1838 };
1839 void *hdr;
1840 struct sk_buff *msg;
1841
1842 if (info->attrs[NL80211_ATTR_KEY_IDX])
1843 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1844
1845 if (key_idx > 5)
1846 return -EINVAL;
1847
1848 if (info->attrs[NL80211_ATTR_MAC])
1849 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1850
1851 pairwise = !!mac_addr;
1852 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1853 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1854 if (kt >= NUM_NL80211_KEYTYPES)
1855 return -EINVAL;
1856 if (kt != NL80211_KEYTYPE_GROUP &&
1857 kt != NL80211_KEYTYPE_PAIRWISE)
1858 return -EINVAL;
1859 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1860 }
1861
1862 if (!rdev->ops->get_key)
1863 return -EOPNOTSUPP;
1864
1865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1866 if (!msg)
1867 return -ENOMEM;
1868
1869 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1870 NL80211_CMD_NEW_KEY);
1871 if (IS_ERR(hdr))
1872 return PTR_ERR(hdr);
1873
1874 cookie.msg = msg;
1875 cookie.idx = key_idx;
1876
1877 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1878 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1879 if (mac_addr)
1880 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1881
1882 if (pairwise && mac_addr &&
1883 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1884 return -ENOENT;
1885
1886 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1887 mac_addr, &cookie, get_key_callback);
1888
1889 if (err)
1890 goto free_msg;
1891
1892 if (cookie.error)
1893 goto nla_put_failure;
1894
1895 genlmsg_end(msg, hdr);
1896 return genlmsg_reply(msg, info);
1897
1898 nla_put_failure:
1899 err = -ENOBUFS;
1900 free_msg:
1901 nlmsg_free(msg);
1902 return err;
1903 }
1904
1905 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1906 {
1907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1908 struct key_parse key;
1909 int err;
1910 struct net_device *dev = info->user_ptr[1];
1911
1912 err = nl80211_parse_key(info, &key);
1913 if (err)
1914 return err;
1915
1916 if (key.idx < 0)
1917 return -EINVAL;
1918
1919 /* only support setting default key */
1920 if (!key.def && !key.defmgmt)
1921 return -EINVAL;
1922
1923 wdev_lock(dev->ieee80211_ptr);
1924
1925 if (key.def) {
1926 if (!rdev->ops->set_default_key) {
1927 err = -EOPNOTSUPP;
1928 goto out;
1929 }
1930
1931 err = nl80211_key_allowed(dev->ieee80211_ptr);
1932 if (err)
1933 goto out;
1934
1935 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1936 key.def_uni, key.def_multi);
1937
1938 if (err)
1939 goto out;
1940
1941 #ifdef CONFIG_CFG80211_WEXT
1942 dev->ieee80211_ptr->wext.default_key = key.idx;
1943 #endif
1944 } else {
1945 if (key.def_uni || !key.def_multi) {
1946 err = -EINVAL;
1947 goto out;
1948 }
1949
1950 if (!rdev->ops->set_default_mgmt_key) {
1951 err = -EOPNOTSUPP;
1952 goto out;
1953 }
1954
1955 err = nl80211_key_allowed(dev->ieee80211_ptr);
1956 if (err)
1957 goto out;
1958
1959 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1960 dev, key.idx);
1961 if (err)
1962 goto out;
1963
1964 #ifdef CONFIG_CFG80211_WEXT
1965 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1966 #endif
1967 }
1968
1969 out:
1970 wdev_unlock(dev->ieee80211_ptr);
1971
1972 return err;
1973 }
1974
1975 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1976 {
1977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1978 int err;
1979 struct net_device *dev = info->user_ptr[1];
1980 struct key_parse key;
1981 const u8 *mac_addr = NULL;
1982
1983 err = nl80211_parse_key(info, &key);
1984 if (err)
1985 return err;
1986
1987 if (!key.p.key)
1988 return -EINVAL;
1989
1990 if (info->attrs[NL80211_ATTR_MAC])
1991 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1992
1993 if (key.type == -1) {
1994 if (mac_addr)
1995 key.type = NL80211_KEYTYPE_PAIRWISE;
1996 else
1997 key.type = NL80211_KEYTYPE_GROUP;
1998 }
1999
2000 /* for now */
2001 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2002 key.type != NL80211_KEYTYPE_GROUP)
2003 return -EINVAL;
2004
2005 if (!rdev->ops->add_key)
2006 return -EOPNOTSUPP;
2007
2008 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2009 key.type == NL80211_KEYTYPE_PAIRWISE,
2010 mac_addr))
2011 return -EINVAL;
2012
2013 wdev_lock(dev->ieee80211_ptr);
2014 err = nl80211_key_allowed(dev->ieee80211_ptr);
2015 if (!err)
2016 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2017 key.type == NL80211_KEYTYPE_PAIRWISE,
2018 mac_addr, &key.p);
2019 wdev_unlock(dev->ieee80211_ptr);
2020
2021 return err;
2022 }
2023
2024 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2025 {
2026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2027 int err;
2028 struct net_device *dev = info->user_ptr[1];
2029 u8 *mac_addr = NULL;
2030 struct key_parse key;
2031
2032 err = nl80211_parse_key(info, &key);
2033 if (err)
2034 return err;
2035
2036 if (info->attrs[NL80211_ATTR_MAC])
2037 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2038
2039 if (key.type == -1) {
2040 if (mac_addr)
2041 key.type = NL80211_KEYTYPE_PAIRWISE;
2042 else
2043 key.type = NL80211_KEYTYPE_GROUP;
2044 }
2045
2046 /* for now */
2047 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2048 key.type != NL80211_KEYTYPE_GROUP)
2049 return -EINVAL;
2050
2051 if (!rdev->ops->del_key)
2052 return -EOPNOTSUPP;
2053
2054 wdev_lock(dev->ieee80211_ptr);
2055 err = nl80211_key_allowed(dev->ieee80211_ptr);
2056
2057 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2058 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2059 err = -ENOENT;
2060
2061 if (!err)
2062 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2063 key.type == NL80211_KEYTYPE_PAIRWISE,
2064 mac_addr);
2065
2066 #ifdef CONFIG_CFG80211_WEXT
2067 if (!err) {
2068 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2069 dev->ieee80211_ptr->wext.default_key = -1;
2070 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2071 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2072 }
2073 #endif
2074 wdev_unlock(dev->ieee80211_ptr);
2075
2076 return err;
2077 }
2078
2079 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2080 {
2081 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2082 struct beacon_parameters *info);
2083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2084 struct net_device *dev = info->user_ptr[1];
2085 struct wireless_dev *wdev = dev->ieee80211_ptr;
2086 struct beacon_parameters params;
2087 int haveinfo = 0, err;
2088
2089 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2090 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2091 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2092 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2093 return -EINVAL;
2094
2095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2096 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2097 return -EOPNOTSUPP;
2098
2099 memset(&params, 0, sizeof(params));
2100
2101 switch (info->genlhdr->cmd) {
2102 case NL80211_CMD_NEW_BEACON:
2103 /* these are required for NEW_BEACON */
2104 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2105 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2106 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2107 return -EINVAL;
2108
2109 params.interval =
2110 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2111 params.dtim_period =
2112 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2113
2114 err = cfg80211_validate_beacon_int(rdev, params.interval);
2115 if (err)
2116 return err;
2117
2118 /*
2119 * In theory, some of these attributes could be required for
2120 * NEW_BEACON, but since they were not used when the command was
2121 * originally added, keep them optional for old user space
2122 * programs to work with drivers that do not need the additional
2123 * information.
2124 */
2125 if (info->attrs[NL80211_ATTR_SSID]) {
2126 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2127 params.ssid_len =
2128 nla_len(info->attrs[NL80211_ATTR_SSID]);
2129 if (params.ssid_len == 0 ||
2130 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2131 return -EINVAL;
2132 }
2133
2134 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2135 params.hidden_ssid = nla_get_u32(
2136 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2137 if (params.hidden_ssid !=
2138 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2139 params.hidden_ssid !=
2140 NL80211_HIDDEN_SSID_ZERO_LEN &&
2141 params.hidden_ssid !=
2142 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2143 return -EINVAL;
2144 }
2145
2146 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2147
2148 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2149 params.auth_type = nla_get_u32(
2150 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2151 if (!nl80211_valid_auth_type(params.auth_type))
2152 return -EINVAL;
2153 } else
2154 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2155
2156 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2157 NL80211_MAX_NR_CIPHER_SUITES);
2158 if (err)
2159 return err;
2160
2161 call = rdev->ops->add_beacon;
2162 break;
2163 case NL80211_CMD_SET_BEACON:
2164 call = rdev->ops->set_beacon;
2165 break;
2166 default:
2167 WARN_ON(1);
2168 return -EOPNOTSUPP;
2169 }
2170
2171 if (!call)
2172 return -EOPNOTSUPP;
2173
2174 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2175 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2176 params.head_len =
2177 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2178 haveinfo = 1;
2179 }
2180
2181 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2182 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2183 params.tail_len =
2184 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2185 haveinfo = 1;
2186 }
2187
2188 if (!haveinfo)
2189 return -EINVAL;
2190
2191 if (info->attrs[NL80211_ATTR_IE]) {
2192 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2193 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2194 }
2195
2196 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2197 params.proberesp_ies =
2198 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2199 params.proberesp_ies_len =
2200 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2201 }
2202
2203 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2204 params.assocresp_ies =
2205 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2206 params.assocresp_ies_len =
2207 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2208 }
2209
2210 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2211 params.probe_resp =
2212 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2213 params.probe_resp_len =
2214 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2215 }
2216
2217 err = call(&rdev->wiphy, dev, &params);
2218 if (!err && params.interval)
2219 wdev->beacon_interval = params.interval;
2220 return err;
2221 }
2222
2223 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2224 {
2225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2226 struct net_device *dev = info->user_ptr[1];
2227 struct wireless_dev *wdev = dev->ieee80211_ptr;
2228 int err;
2229
2230 if (!rdev->ops->del_beacon)
2231 return -EOPNOTSUPP;
2232
2233 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2234 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2235 return -EOPNOTSUPP;
2236
2237 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2238 if (!err)
2239 wdev->beacon_interval = 0;
2240 return err;
2241 }
2242
2243 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2244 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2245 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2246 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2247 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2248 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2249 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2250 };
2251
2252 static int parse_station_flags(struct genl_info *info,
2253 struct station_parameters *params)
2254 {
2255 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2256 struct nlattr *nla;
2257 int flag;
2258
2259 /*
2260 * Try parsing the new attribute first so userspace
2261 * can specify both for older kernels.
2262 */
2263 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2264 if (nla) {
2265 struct nl80211_sta_flag_update *sta_flags;
2266
2267 sta_flags = nla_data(nla);
2268 params->sta_flags_mask = sta_flags->mask;
2269 params->sta_flags_set = sta_flags->set;
2270 if ((params->sta_flags_mask |
2271 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2272 return -EINVAL;
2273 return 0;
2274 }
2275
2276 /* if present, parse the old attribute */
2277
2278 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2279 if (!nla)
2280 return 0;
2281
2282 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2283 nla, sta_flags_policy))
2284 return -EINVAL;
2285
2286 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2287 params->sta_flags_mask &= ~1;
2288
2289 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2290 if (flags[flag])
2291 params->sta_flags_set |= (1<<flag);
2292
2293 return 0;
2294 }
2295
2296 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2297 int attr)
2298 {
2299 struct nlattr *rate;
2300 u16 bitrate;
2301
2302 rate = nla_nest_start(msg, attr);
2303 if (!rate)
2304 goto nla_put_failure;
2305
2306 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2307 bitrate = cfg80211_calculate_bitrate(info);
2308 if (bitrate > 0)
2309 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2310
2311 if (info->flags & RATE_INFO_FLAGS_MCS)
2312 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2313 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2314 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2315 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2316 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2317
2318 nla_nest_end(msg, rate);
2319 return true;
2320
2321 nla_put_failure:
2322 return false;
2323 }
2324
2325 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2326 int flags, struct net_device *dev,
2327 const u8 *mac_addr, struct station_info *sinfo)
2328 {
2329 void *hdr;
2330 struct nlattr *sinfoattr, *bss_param;
2331
2332 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2333 if (!hdr)
2334 return -1;
2335
2336 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2337 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2338
2339 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2340
2341 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2342 if (!sinfoattr)
2343 goto nla_put_failure;
2344 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2345 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2346 sinfo->connected_time);
2347 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2348 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2349 sinfo->inactive_time);
2350 if (sinfo->filled & STATION_INFO_RX_BYTES)
2351 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2352 sinfo->rx_bytes);
2353 if (sinfo->filled & STATION_INFO_TX_BYTES)
2354 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2355 sinfo->tx_bytes);
2356 if (sinfo->filled & STATION_INFO_LLID)
2357 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2358 sinfo->llid);
2359 if (sinfo->filled & STATION_INFO_PLID)
2360 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2361 sinfo->plid);
2362 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2363 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2364 sinfo->plink_state);
2365 if (sinfo->filled & STATION_INFO_SIGNAL)
2366 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2367 sinfo->signal);
2368 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2369 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2370 sinfo->signal_avg);
2371 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2372 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2373 NL80211_STA_INFO_TX_BITRATE))
2374 goto nla_put_failure;
2375 }
2376 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2377 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2378 NL80211_STA_INFO_RX_BITRATE))
2379 goto nla_put_failure;
2380 }
2381 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2382 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2383 sinfo->rx_packets);
2384 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2385 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2386 sinfo->tx_packets);
2387 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2388 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2389 sinfo->tx_retries);
2390 if (sinfo->filled & STATION_INFO_TX_FAILED)
2391 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2392 sinfo->tx_failed);
2393 if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
2394 NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
2395 sinfo->beacon_loss_count);
2396 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2397 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2398 if (!bss_param)
2399 goto nla_put_failure;
2400
2401 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2402 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2403 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2404 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2405 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2406 NLA_PUT_FLAG(msg,
2407 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2408 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2409 sinfo->bss_param.dtim_period);
2410 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2411 sinfo->bss_param.beacon_interval);
2412
2413 nla_nest_end(msg, bss_param);
2414 }
2415 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2416 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2417 sizeof(struct nl80211_sta_flag_update),
2418 &sinfo->sta_flags);
2419 nla_nest_end(msg, sinfoattr);
2420
2421 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2422 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2423 sinfo->assoc_req_ies);
2424
2425 return genlmsg_end(msg, hdr);
2426
2427 nla_put_failure:
2428 genlmsg_cancel(msg, hdr);
2429 return -EMSGSIZE;
2430 }
2431
2432 static int nl80211_dump_station(struct sk_buff *skb,
2433 struct netlink_callback *cb)
2434 {
2435 struct station_info sinfo;
2436 struct cfg80211_registered_device *dev;
2437 struct net_device *netdev;
2438 u8 mac_addr[ETH_ALEN];
2439 int sta_idx = cb->args[1];
2440 int err;
2441
2442 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2443 if (err)
2444 return err;
2445
2446 if (!dev->ops->dump_station) {
2447 err = -EOPNOTSUPP;
2448 goto out_err;
2449 }
2450
2451 while (1) {
2452 memset(&sinfo, 0, sizeof(sinfo));
2453 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2454 mac_addr, &sinfo);
2455 if (err == -ENOENT)
2456 break;
2457 if (err)
2458 goto out_err;
2459
2460 if (nl80211_send_station(skb,
2461 NETLINK_CB(cb->skb).pid,
2462 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2463 netdev, mac_addr,
2464 &sinfo) < 0)
2465 goto out;
2466
2467 sta_idx++;
2468 }
2469
2470
2471 out:
2472 cb->args[1] = sta_idx;
2473 err = skb->len;
2474 out_err:
2475 nl80211_finish_netdev_dump(dev);
2476
2477 return err;
2478 }
2479
2480 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2481 {
2482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2483 struct net_device *dev = info->user_ptr[1];
2484 struct station_info sinfo;
2485 struct sk_buff *msg;
2486 u8 *mac_addr = NULL;
2487 int err;
2488
2489 memset(&sinfo, 0, sizeof(sinfo));
2490
2491 if (!info->attrs[NL80211_ATTR_MAC])
2492 return -EINVAL;
2493
2494 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2495
2496 if (!rdev->ops->get_station)
2497 return -EOPNOTSUPP;
2498
2499 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2500 if (err)
2501 return err;
2502
2503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2504 if (!msg)
2505 return -ENOMEM;
2506
2507 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2508 dev, mac_addr, &sinfo) < 0) {
2509 nlmsg_free(msg);
2510 return -ENOBUFS;
2511 }
2512
2513 return genlmsg_reply(msg, info);
2514 }
2515
2516 /*
2517 * Get vlan interface making sure it is running and on the right wiphy.
2518 */
2519 static struct net_device *get_vlan(struct genl_info *info,
2520 struct cfg80211_registered_device *rdev)
2521 {
2522 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2523 struct net_device *v;
2524 int ret;
2525
2526 if (!vlanattr)
2527 return NULL;
2528
2529 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2530 if (!v)
2531 return ERR_PTR(-ENODEV);
2532
2533 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2534 ret = -EINVAL;
2535 goto error;
2536 }
2537
2538 if (!netif_running(v)) {
2539 ret = -ENETDOWN;
2540 goto error;
2541 }
2542
2543 return v;
2544 error:
2545 dev_put(v);
2546 return ERR_PTR(ret);
2547 }
2548
2549 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2550 {
2551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2552 int err;
2553 struct net_device *dev = info->user_ptr[1];
2554 struct station_parameters params;
2555 u8 *mac_addr = NULL;
2556
2557 memset(&params, 0, sizeof(params));
2558
2559 params.listen_interval = -1;
2560 params.plink_state = -1;
2561
2562 if (info->attrs[NL80211_ATTR_STA_AID])
2563 return -EINVAL;
2564
2565 if (!info->attrs[NL80211_ATTR_MAC])
2566 return -EINVAL;
2567
2568 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2569
2570 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2571 params.supported_rates =
2572 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2573 params.supported_rates_len =
2574 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2575 }
2576
2577 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2578 params.listen_interval =
2579 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2580
2581 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2582 params.ht_capa =
2583 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2584
2585 if (!rdev->ops->change_station)
2586 return -EOPNOTSUPP;
2587
2588 if (parse_station_flags(info, &params))
2589 return -EINVAL;
2590
2591 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2592 params.plink_action =
2593 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2594
2595 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2596 params.plink_state =
2597 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2598
2599 switch (dev->ieee80211_ptr->iftype) {
2600 case NL80211_IFTYPE_AP:
2601 case NL80211_IFTYPE_AP_VLAN:
2602 case NL80211_IFTYPE_P2P_GO:
2603 /* disallow mesh-specific things */
2604 if (params.plink_action)
2605 return -EINVAL;
2606
2607 /* TDLS can't be set, ... */
2608 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2609 return -EINVAL;
2610 /*
2611 * ... but don't bother the driver with it. This works around
2612 * a hostapd/wpa_supplicant issue -- it always includes the
2613 * TLDS_PEER flag in the mask even for AP mode.
2614 */
2615 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2616
2617 /* accept only the listed bits */
2618 if (params.sta_flags_mask &
2619 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2620 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2621 BIT(NL80211_STA_FLAG_WME) |
2622 BIT(NL80211_STA_FLAG_MFP)))
2623 return -EINVAL;
2624
2625 /* must be last in here for error handling */
2626 params.vlan = get_vlan(info, rdev);
2627 if (IS_ERR(params.vlan))
2628 return PTR_ERR(params.vlan);
2629 break;
2630 case NL80211_IFTYPE_P2P_CLIENT:
2631 case NL80211_IFTYPE_STATION:
2632 /* disallow things sta doesn't support */
2633 if (params.plink_action)
2634 return -EINVAL;
2635 if (params.ht_capa)
2636 return -EINVAL;
2637 if (params.listen_interval >= 0)
2638 return -EINVAL;
2639 /*
2640 * Don't allow userspace to change the TDLS_PEER flag,
2641 * but silently ignore attempts to change it since we
2642 * don't have state here to verify that it doesn't try
2643 * to change the flag.
2644 */
2645 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2646
2647 /* reject any changes other than AUTHORIZED */
2648 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2649 return -EINVAL;
2650 break;
2651 case NL80211_IFTYPE_MESH_POINT:
2652 /* disallow things mesh doesn't support */
2653 if (params.vlan)
2654 return -EINVAL;
2655 if (params.ht_capa)
2656 return -EINVAL;
2657 if (params.listen_interval >= 0)
2658 return -EINVAL;
2659 /*
2660 * No special handling for TDLS here -- the userspace
2661 * mesh code doesn't have this bug.
2662 */
2663 if (params.sta_flags_mask &
2664 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2665 BIT(NL80211_STA_FLAG_MFP) |
2666 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2667 return -EINVAL;
2668 break;
2669 default:
2670 return -EOPNOTSUPP;
2671 }
2672
2673 /* be aware of params.vlan when changing code here */
2674
2675 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2676
2677 if (params.vlan)
2678 dev_put(params.vlan);
2679
2680 return err;
2681 }
2682
2683 static struct nla_policy
2684 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2685 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2686 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2687 };
2688
2689 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2690 {
2691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2692 int err;
2693 struct net_device *dev = info->user_ptr[1];
2694 struct station_parameters params;
2695 u8 *mac_addr = NULL;
2696
2697 memset(&params, 0, sizeof(params));
2698
2699 if (!info->attrs[NL80211_ATTR_MAC])
2700 return -EINVAL;
2701
2702 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2703 return -EINVAL;
2704
2705 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2706 return -EINVAL;
2707
2708 if (!info->attrs[NL80211_ATTR_STA_AID])
2709 return -EINVAL;
2710
2711 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2712 params.supported_rates =
2713 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2714 params.supported_rates_len =
2715 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2716 params.listen_interval =
2717 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2718
2719 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2720 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2721 return -EINVAL;
2722
2723 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2724 params.ht_capa =
2725 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2726
2727 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2728 params.plink_action =
2729 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2730
2731 if (!rdev->ops->add_station)
2732 return -EOPNOTSUPP;
2733
2734 if (parse_station_flags(info, &params))
2735 return -EINVAL;
2736
2737 switch (dev->ieee80211_ptr->iftype) {
2738 case NL80211_IFTYPE_AP:
2739 case NL80211_IFTYPE_AP_VLAN:
2740 case NL80211_IFTYPE_P2P_GO:
2741 /* parse WME attributes if sta is WME capable */
2742 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2743 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2744 info->attrs[NL80211_ATTR_STA_WME]) {
2745 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2746 struct nlattr *nla;
2747
2748 nla = info->attrs[NL80211_ATTR_STA_WME];
2749 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2750 nl80211_sta_wme_policy);
2751 if (err)
2752 return err;
2753
2754 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2755 params.uapsd_queues =
2756 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2757 if (params.uapsd_queues &
2758 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2759 return -EINVAL;
2760
2761 if (tb[NL80211_STA_WME_MAX_SP])
2762 params.max_sp =
2763 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2764
2765 if (params.max_sp &
2766 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2767 return -EINVAL;
2768
2769 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2770 }
2771 /* TDLS peers cannot be added */
2772 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2773 return -EINVAL;
2774 /* but don't bother the driver with it */
2775 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2776
2777 /* must be last in here for error handling */
2778 params.vlan = get_vlan(info, rdev);
2779 if (IS_ERR(params.vlan))
2780 return PTR_ERR(params.vlan);
2781 break;
2782 case NL80211_IFTYPE_MESH_POINT:
2783 /* TDLS peers cannot be added */
2784 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2785 return -EINVAL;
2786 break;
2787 case NL80211_IFTYPE_STATION:
2788 /* Only TDLS peers can be added */
2789 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2790 return -EINVAL;
2791 /* Can only add if TDLS ... */
2792 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
2793 return -EOPNOTSUPP;
2794 /* ... with external setup is supported */
2795 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
2796 return -EOPNOTSUPP;
2797 break;
2798 default:
2799 return -EOPNOTSUPP;
2800 }
2801
2802 /* be aware of params.vlan when changing code here */
2803
2804 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2805
2806 if (params.vlan)
2807 dev_put(params.vlan);
2808 return err;
2809 }
2810
2811 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2812 {
2813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2814 struct net_device *dev = info->user_ptr[1];
2815 u8 *mac_addr = NULL;
2816
2817 if (info->attrs[NL80211_ATTR_MAC])
2818 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2819
2820 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2821 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2822 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2824 return -EINVAL;
2825
2826 if (!rdev->ops->del_station)
2827 return -EOPNOTSUPP;
2828
2829 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2830 }
2831
2832 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2833 int flags, struct net_device *dev,
2834 u8 *dst, u8 *next_hop,
2835 struct mpath_info *pinfo)
2836 {
2837 void *hdr;
2838 struct nlattr *pinfoattr;
2839
2840 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2841 if (!hdr)
2842 return -1;
2843
2844 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2845 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2846 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2847
2848 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2849
2850 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2851 if (!pinfoattr)
2852 goto nla_put_failure;
2853 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2854 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2855 pinfo->frame_qlen);
2856 if (pinfo->filled & MPATH_INFO_SN)
2857 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2858 pinfo->sn);
2859 if (pinfo->filled & MPATH_INFO_METRIC)
2860 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2861 pinfo->metric);
2862 if (pinfo->filled & MPATH_INFO_EXPTIME)
2863 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2864 pinfo->exptime);
2865 if (pinfo->filled & MPATH_INFO_FLAGS)
2866 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2867 pinfo->flags);
2868 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2869 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2870 pinfo->discovery_timeout);
2871 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2872 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2873 pinfo->discovery_retries);
2874
2875 nla_nest_end(msg, pinfoattr);
2876
2877 return genlmsg_end(msg, hdr);
2878
2879 nla_put_failure:
2880 genlmsg_cancel(msg, hdr);
2881 return -EMSGSIZE;
2882 }
2883
2884 static int nl80211_dump_mpath(struct sk_buff *skb,
2885 struct netlink_callback *cb)
2886 {
2887 struct mpath_info pinfo;
2888 struct cfg80211_registered_device *dev;
2889 struct net_device *netdev;
2890 u8 dst[ETH_ALEN];
2891 u8 next_hop[ETH_ALEN];
2892 int path_idx = cb->args[1];
2893 int err;
2894
2895 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2896 if (err)
2897 return err;
2898
2899 if (!dev->ops->dump_mpath) {
2900 err = -EOPNOTSUPP;
2901 goto out_err;
2902 }
2903
2904 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2905 err = -EOPNOTSUPP;
2906 goto out_err;
2907 }
2908
2909 while (1) {
2910 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2911 dst, next_hop, &pinfo);
2912 if (err == -ENOENT)
2913 break;
2914 if (err)
2915 goto out_err;
2916
2917 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2918 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2919 netdev, dst, next_hop,
2920 &pinfo) < 0)
2921 goto out;
2922
2923 path_idx++;
2924 }
2925
2926
2927 out:
2928 cb->args[1] = path_idx;
2929 err = skb->len;
2930 out_err:
2931 nl80211_finish_netdev_dump(dev);
2932 return err;
2933 }
2934
2935 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2936 {
2937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2938 int err;
2939 struct net_device *dev = info->user_ptr[1];
2940 struct mpath_info pinfo;
2941 struct sk_buff *msg;
2942 u8 *dst = NULL;
2943 u8 next_hop[ETH_ALEN];
2944
2945 memset(&pinfo, 0, sizeof(pinfo));
2946
2947 if (!info->attrs[NL80211_ATTR_MAC])
2948 return -EINVAL;
2949
2950 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2951
2952 if (!rdev->ops->get_mpath)
2953 return -EOPNOTSUPP;
2954
2955 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2956 return -EOPNOTSUPP;
2957
2958 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2959 if (err)
2960 return err;
2961
2962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2963 if (!msg)
2964 return -ENOMEM;
2965
2966 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2967 dev, dst, next_hop, &pinfo) < 0) {
2968 nlmsg_free(msg);
2969 return -ENOBUFS;
2970 }
2971
2972 return genlmsg_reply(msg, info);
2973 }
2974
2975 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2976 {
2977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2978 struct net_device *dev = info->user_ptr[1];
2979 u8 *dst = NULL;
2980 u8 *next_hop = NULL;
2981
2982 if (!info->attrs[NL80211_ATTR_MAC])
2983 return -EINVAL;
2984
2985 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2986 return -EINVAL;
2987
2988 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2989 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2990
2991 if (!rdev->ops->change_mpath)
2992 return -EOPNOTSUPP;
2993
2994 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2995 return -EOPNOTSUPP;
2996
2997 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2998 }
2999
3000 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3001 {
3002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3003 struct net_device *dev = info->user_ptr[1];
3004 u8 *dst = NULL;
3005 u8 *next_hop = NULL;
3006
3007 if (!info->attrs[NL80211_ATTR_MAC])
3008 return -EINVAL;
3009
3010 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3011 return -EINVAL;
3012
3013 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3014 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3015
3016 if (!rdev->ops->add_mpath)
3017 return -EOPNOTSUPP;
3018
3019 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3020 return -EOPNOTSUPP;
3021
3022 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3023 }
3024
3025 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3026 {
3027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3028 struct net_device *dev = info->user_ptr[1];
3029 u8 *dst = NULL;
3030
3031 if (info->attrs[NL80211_ATTR_MAC])
3032 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3033
3034 if (!rdev->ops->del_mpath)
3035 return -EOPNOTSUPP;
3036
3037 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3038 }
3039
3040 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3041 {
3042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3043 struct net_device *dev = info->user_ptr[1];
3044 struct bss_parameters params;
3045
3046 memset(&params, 0, sizeof(params));
3047 /* default to not changing parameters */
3048 params.use_cts_prot = -1;
3049 params.use_short_preamble = -1;
3050 params.use_short_slot_time = -1;
3051 params.ap_isolate = -1;
3052 params.ht_opmode = -1;
3053
3054 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3055 params.use_cts_prot =
3056 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3057 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3058 params.use_short_preamble =
3059 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3060 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3061 params.use_short_slot_time =
3062 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3063 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3064 params.basic_rates =
3065 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3066 params.basic_rates_len =
3067 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3068 }
3069 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3070 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3071 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3072 params.ht_opmode =
3073 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3074
3075 if (!rdev->ops->change_bss)
3076 return -EOPNOTSUPP;
3077
3078 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3079 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3080 return -EOPNOTSUPP;
3081
3082 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3083 }
3084
3085 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3086 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3087 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3088 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3089 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3090 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3091 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3092 };
3093
3094 static int parse_reg_rule(struct nlattr *tb[],
3095 struct ieee80211_reg_rule *reg_rule)
3096 {
3097 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3098 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3099
3100 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3101 return -EINVAL;
3102 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3103 return -EINVAL;
3104 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3105 return -EINVAL;
3106 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3107 return -EINVAL;
3108 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3109 return -EINVAL;
3110
3111 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3112
3113 freq_range->start_freq_khz =
3114 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3115 freq_range->end_freq_khz =
3116 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3117 freq_range->max_bandwidth_khz =
3118 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3119
3120 power_rule->max_eirp =
3121 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3122
3123 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3124 power_rule->max_antenna_gain =
3125 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3126
3127 return 0;
3128 }
3129
3130 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3131 {
3132 int r;
3133 char *data = NULL;
3134
3135 /*
3136 * You should only get this when cfg80211 hasn't yet initialized
3137 * completely when built-in to the kernel right between the time
3138 * window between nl80211_init() and regulatory_init(), if that is
3139 * even possible.
3140 */
3141 mutex_lock(&cfg80211_mutex);
3142 if (unlikely(!cfg80211_regdomain)) {
3143 mutex_unlock(&cfg80211_mutex);
3144 return -EINPROGRESS;
3145 }
3146 mutex_unlock(&cfg80211_mutex);
3147
3148 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3149 return -EINVAL;
3150
3151 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3152
3153 r = regulatory_hint_user(data);
3154
3155 return r;
3156 }
3157
3158 static int nl80211_get_mesh_config(struct sk_buff *skb,
3159 struct genl_info *info)
3160 {
3161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3162 struct net_device *dev = info->user_ptr[1];
3163 struct wireless_dev *wdev = dev->ieee80211_ptr;
3164 struct mesh_config cur_params;
3165 int err = 0;
3166 void *hdr;
3167 struct nlattr *pinfoattr;
3168 struct sk_buff *msg;
3169
3170 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3171 return -EOPNOTSUPP;
3172
3173 if (!rdev->ops->get_mesh_config)
3174 return -EOPNOTSUPP;
3175
3176 wdev_lock(wdev);
3177 /* If not connected, get default parameters */
3178 if (!wdev->mesh_id_len)
3179 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3180 else
3181 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3182 &cur_params);
3183 wdev_unlock(wdev);
3184
3185 if (err)
3186 return err;
3187
3188 /* Draw up a netlink message to send back */
3189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3190 if (!msg)
3191 return -ENOMEM;
3192 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3193 NL80211_CMD_GET_MESH_CONFIG);
3194 if (!hdr)
3195 goto out;
3196 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3197 if (!pinfoattr)
3198 goto nla_put_failure;
3199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3200 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3201 cur_params.dot11MeshRetryTimeout);
3202 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3203 cur_params.dot11MeshConfirmTimeout);
3204 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3205 cur_params.dot11MeshHoldingTimeout);
3206 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3207 cur_params.dot11MeshMaxPeerLinks);
3208 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3209 cur_params.dot11MeshMaxRetries);
3210 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3211 cur_params.dot11MeshTTL);
3212 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3213 cur_params.element_ttl);
3214 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3215 cur_params.auto_open_plinks);
3216 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3217 cur_params.dot11MeshHWMPmaxPREQretries);
3218 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3219 cur_params.path_refresh_time);
3220 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3221 cur_params.min_discovery_timeout);
3222 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3223 cur_params.dot11MeshHWMPactivePathTimeout);
3224 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3225 cur_params.dot11MeshHWMPpreqMinInterval);
3226 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3227 cur_params.dot11MeshHWMPperrMinInterval);
3228 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3229 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3230 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3231 cur_params.dot11MeshHWMPRootMode);
3232 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3233 cur_params.dot11MeshHWMPRannInterval);
3234 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3235 cur_params.dot11MeshGateAnnouncementProtocol);
3236 nla_nest_end(msg, pinfoattr);
3237 genlmsg_end(msg, hdr);
3238 return genlmsg_reply(msg, info);
3239
3240 nla_put_failure:
3241 genlmsg_cancel(msg, hdr);
3242 out:
3243 nlmsg_free(msg);
3244 return -ENOBUFS;
3245 }
3246
3247 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3248 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3249 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3250 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3251 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3252 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3253 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3254 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3255 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3256
3257 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3258 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3259 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3260 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3261 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3262 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3263 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3264 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3265 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3266 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3267 };
3268
3269 static const struct nla_policy
3270 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3271 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3272 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3273 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3274 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3275 .len = IEEE80211_MAX_DATA_LEN },
3276 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3277 };
3278
3279 static int nl80211_parse_mesh_config(struct genl_info *info,
3280 struct mesh_config *cfg,
3281 u32 *mask_out)
3282 {
3283 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3284 u32 mask = 0;
3285
3286 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3287 do {\
3288 if (table[attr_num]) {\
3289 cfg->param = nla_fn(table[attr_num]); \
3290 mask |= (1 << (attr_num - 1)); \
3291 } \
3292 } while (0);\
3293
3294
3295 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3296 return -EINVAL;
3297 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3298 info->attrs[NL80211_ATTR_MESH_CONFIG],
3299 nl80211_meshconf_params_policy))
3300 return -EINVAL;
3301
3302 /* This makes sure that there aren't more than 32 mesh config
3303 * parameters (otherwise our bitfield scheme would not work.) */
3304 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3305
3306 /* Fill in the params struct */
3307 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3308 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3309 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3310 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3311 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3312 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3313 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3314 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3315 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3316 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3317 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3318 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3319 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3320 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3321 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3322 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3323 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3324 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3325 nla_get_u8);
3326 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3327 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3328 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3329 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3330 nla_get_u16);
3331 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3332 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3333 nla_get_u32);
3334 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3335 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3336 nla_get_u16);
3337 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3338 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3339 nla_get_u16);
3340 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3341 dot11MeshHWMPnetDiameterTraversalTime,
3342 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3343 nla_get_u16);
3344 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3345 dot11MeshHWMPRootMode, mask,
3346 NL80211_MESHCONF_HWMP_ROOTMODE,
3347 nla_get_u8);
3348 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3349 dot11MeshHWMPRannInterval, mask,
3350 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3351 nla_get_u16);
3352 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3353 dot11MeshGateAnnouncementProtocol, mask,
3354 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3355 nla_get_u8);
3356 if (mask_out)
3357 *mask_out = mask;
3358
3359 return 0;
3360
3361 #undef FILL_IN_MESH_PARAM_IF_SET
3362 }
3363
3364 static int nl80211_parse_mesh_setup(struct genl_info *info,
3365 struct mesh_setup *setup)
3366 {
3367 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3368
3369 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3370 return -EINVAL;
3371 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3372 info->attrs[NL80211_ATTR_MESH_SETUP],
3373 nl80211_mesh_setup_params_policy))
3374 return -EINVAL;
3375
3376 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3377 setup->path_sel_proto =
3378 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3379 IEEE80211_PATH_PROTOCOL_VENDOR :
3380 IEEE80211_PATH_PROTOCOL_HWMP;
3381
3382 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3383 setup->path_metric =
3384 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3385 IEEE80211_PATH_METRIC_VENDOR :
3386 IEEE80211_PATH_METRIC_AIRTIME;
3387
3388
3389 if (tb[NL80211_MESH_SETUP_IE]) {
3390 struct nlattr *ieattr =
3391 tb[NL80211_MESH_SETUP_IE];
3392 if (!is_valid_ie_attr(ieattr))
3393 return -EINVAL;
3394 setup->ie = nla_data(ieattr);
3395 setup->ie_len = nla_len(ieattr);
3396 }
3397 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3398 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3399
3400 return 0;
3401 }
3402
3403 static int nl80211_update_mesh_config(struct sk_buff *skb,
3404 struct genl_info *info)
3405 {
3406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3407 struct net_device *dev = info->user_ptr[1];
3408 struct wireless_dev *wdev = dev->ieee80211_ptr;
3409 struct mesh_config cfg;
3410 u32 mask;
3411 int err;
3412
3413 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3414 return -EOPNOTSUPP;
3415
3416 if (!rdev->ops->update_mesh_config)
3417 return -EOPNOTSUPP;
3418
3419 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3420 if (err)
3421 return err;
3422
3423 wdev_lock(wdev);
3424 if (!wdev->mesh_id_len)
3425 err = -ENOLINK;
3426
3427 if (!err)
3428 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3429 mask, &cfg);
3430
3431 wdev_unlock(wdev);
3432
3433 return err;
3434 }
3435
3436 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3437 {
3438 struct sk_buff *msg;
3439 void *hdr = NULL;
3440 struct nlattr *nl_reg_rules;
3441 unsigned int i;
3442 int err = -EINVAL;
3443
3444 mutex_lock(&cfg80211_mutex);
3445
3446 if (!cfg80211_regdomain)
3447 goto out;
3448
3449 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3450 if (!msg) {
3451 err = -ENOBUFS;
3452 goto out;
3453 }
3454
3455 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3456 NL80211_CMD_GET_REG);
3457 if (!hdr)
3458 goto put_failure;
3459
3460 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3461 cfg80211_regdomain->alpha2);
3462 if (cfg80211_regdomain->dfs_region)
3463 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3464 cfg80211_regdomain->dfs_region);
3465
3466 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3467 if (!nl_reg_rules)
3468 goto nla_put_failure;
3469
3470 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3471 struct nlattr *nl_reg_rule;
3472 const struct ieee80211_reg_rule *reg_rule;
3473 const struct ieee80211_freq_range *freq_range;
3474 const struct ieee80211_power_rule *power_rule;
3475
3476 reg_rule = &cfg80211_regdomain->reg_rules[i];
3477 freq_range = &reg_rule->freq_range;
3478 power_rule = &reg_rule->power_rule;
3479
3480 nl_reg_rule = nla_nest_start(msg, i);
3481 if (!nl_reg_rule)
3482 goto nla_put_failure;
3483
3484 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3485 reg_rule->flags);
3486 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3487 freq_range->start_freq_khz);
3488 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3489 freq_range->end_freq_khz);
3490 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3491 freq_range->max_bandwidth_khz);
3492 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3493 power_rule->max_antenna_gain);
3494 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3495 power_rule->max_eirp);
3496
3497 nla_nest_end(msg, nl_reg_rule);
3498 }
3499
3500 nla_nest_end(msg, nl_reg_rules);
3501
3502 genlmsg_end(msg, hdr);
3503 err = genlmsg_reply(msg, info);
3504 goto out;
3505
3506 nla_put_failure:
3507 genlmsg_cancel(msg, hdr);
3508 put_failure:
3509 nlmsg_free(msg);
3510 err = -EMSGSIZE;
3511 out:
3512 mutex_unlock(&cfg80211_mutex);
3513 return err;
3514 }
3515
3516 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3517 {
3518 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3519 struct nlattr *nl_reg_rule;
3520 char *alpha2 = NULL;
3521 int rem_reg_rules = 0, r = 0;
3522 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3523 u8 dfs_region = 0;
3524 struct ieee80211_regdomain *rd = NULL;
3525
3526 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3527 return -EINVAL;
3528
3529 if (!info->attrs[NL80211_ATTR_REG_RULES])
3530 return -EINVAL;
3531
3532 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3533
3534 if (info->attrs[NL80211_ATTR_DFS_REGION])
3535 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3536
3537 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3538 rem_reg_rules) {
3539 num_rules++;
3540 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3541 return -EINVAL;
3542 }
3543
3544 mutex_lock(&cfg80211_mutex);
3545
3546 if (!reg_is_valid_request(alpha2)) {
3547 r = -EINVAL;
3548 goto bad_reg;
3549 }
3550
3551 size_of_regd = sizeof(struct ieee80211_regdomain) +
3552 (num_rules * sizeof(struct ieee80211_reg_rule));
3553
3554 rd = kzalloc(size_of_regd, GFP_KERNEL);
3555 if (!rd) {
3556 r = -ENOMEM;
3557 goto bad_reg;
3558 }
3559
3560 rd->n_reg_rules = num_rules;
3561 rd->alpha2[0] = alpha2[0];
3562 rd->alpha2[1] = alpha2[1];
3563
3564 /*
3565 * Disable DFS master mode if the DFS region was
3566 * not supported or known on this kernel.
3567 */
3568 if (reg_supported_dfs_region(dfs_region))
3569 rd->dfs_region = dfs_region;
3570
3571 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3572 rem_reg_rules) {
3573 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3574 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3575 reg_rule_policy);
3576 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3577 if (r)
3578 goto bad_reg;
3579
3580 rule_idx++;
3581
3582 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3583 r = -EINVAL;
3584 goto bad_reg;
3585 }
3586 }
3587
3588 BUG_ON(rule_idx != num_rules);
3589
3590 r = set_regdom(rd);
3591
3592 mutex_unlock(&cfg80211_mutex);
3593
3594 return r;
3595
3596 bad_reg:
3597 mutex_unlock(&cfg80211_mutex);
3598 kfree(rd);
3599 return r;
3600 }
3601
3602 static int validate_scan_freqs(struct nlattr *freqs)
3603 {
3604 struct nlattr *attr1, *attr2;
3605 int n_channels = 0, tmp1, tmp2;
3606
3607 nla_for_each_nested(attr1, freqs, tmp1) {
3608 n_channels++;
3609 /*
3610 * Some hardware has a limited channel list for
3611 * scanning, and it is pretty much nonsensical
3612 * to scan for a channel twice, so disallow that
3613 * and don't require drivers to check that the
3614 * channel list they get isn't longer than what
3615 * they can scan, as long as they can scan all
3616 * the channels they registered at once.
3617 */
3618 nla_for_each_nested(attr2, freqs, tmp2)
3619 if (attr1 != attr2 &&
3620 nla_get_u32(attr1) == nla_get_u32(attr2))
3621 return 0;
3622 }
3623
3624 return n_channels;
3625 }
3626
3627 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3628 {
3629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3630 struct net_device *dev = info->user_ptr[1];
3631 struct cfg80211_scan_request *request;
3632 struct nlattr *attr;
3633 struct wiphy *wiphy;
3634 int err, tmp, n_ssids = 0, n_channels, i;
3635 size_t ie_len;
3636
3637 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3638 return -EINVAL;
3639
3640 wiphy = &rdev->wiphy;
3641
3642 if (!rdev->ops->scan)
3643 return -EOPNOTSUPP;
3644
3645 if (rdev->scan_req)
3646 return -EBUSY;
3647
3648 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3649 n_channels = validate_scan_freqs(
3650 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3651 if (!n_channels)
3652 return -EINVAL;
3653 } else {
3654 enum ieee80211_band band;
3655 n_channels = 0;
3656
3657 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3658 if (wiphy->bands[band])
3659 n_channels += wiphy->bands[band]->n_channels;
3660 }
3661
3662 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3663 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3664 n_ssids++;
3665
3666 if (n_ssids > wiphy->max_scan_ssids)
3667 return -EINVAL;
3668
3669 if (info->attrs[NL80211_ATTR_IE])
3670 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3671 else
3672 ie_len = 0;
3673
3674 if (ie_len > wiphy->max_scan_ie_len)
3675 return -EINVAL;
3676
3677 request = kzalloc(sizeof(*request)
3678 + sizeof(*request->ssids) * n_ssids
3679 + sizeof(*request->channels) * n_channels
3680 + ie_len, GFP_KERNEL);
3681 if (!request)
3682 return -ENOMEM;
3683
3684 if (n_ssids)
3685 request->ssids = (void *)&request->channels[n_channels];
3686 request->n_ssids = n_ssids;
3687 if (ie_len) {
3688 if (request->ssids)
3689 request->ie = (void *)(request->ssids + n_ssids);
3690 else
3691 request->ie = (void *)(request->channels + n_channels);
3692 }
3693
3694 i = 0;
3695 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3696 /* user specified, bail out if channel not found */
3697 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3698 struct ieee80211_channel *chan;
3699
3700 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3701
3702 if (!chan) {
3703 err = -EINVAL;
3704 goto out_free;
3705 }
3706
3707 /* ignore disabled channels */
3708 if (chan->flags & IEEE80211_CHAN_DISABLED)
3709 continue;
3710
3711 request->channels[i] = chan;
3712 i++;
3713 }
3714 } else {
3715 enum ieee80211_band band;
3716
3717 /* all channels */
3718 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3719 int j;
3720 if (!wiphy->bands[band])
3721 continue;
3722 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3723 struct ieee80211_channel *chan;
3724
3725 chan = &wiphy->bands[band]->channels[j];
3726
3727 if (chan->flags & IEEE80211_CHAN_DISABLED)
3728 continue;
3729
3730 request->channels[i] = chan;
3731 i++;
3732 }
3733 }
3734 }
3735
3736 if (!i) {
3737 err = -EINVAL;
3738 goto out_free;
3739 }
3740
3741 request->n_channels = i;
3742
3743 i = 0;
3744 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3745 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3746 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3747 err = -EINVAL;
3748 goto out_free;
3749 }
3750 request->ssids[i].ssid_len = nla_len(attr);
3751 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3752 i++;
3753 }
3754 }
3755
3756 if (info->attrs[NL80211_ATTR_IE]) {
3757 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3758 memcpy((void *)request->ie,
3759 nla_data(info->attrs[NL80211_ATTR_IE]),
3760 request->ie_len);
3761 }
3762
3763 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3764 if (wiphy->bands[i])
3765 request->rates[i] =
3766 (1 << wiphy->bands[i]->n_bitrates) - 1;
3767
3768 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3769 nla_for_each_nested(attr,
3770 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3771 tmp) {
3772 enum ieee80211_band band = nla_type(attr);
3773
3774 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3775 err = -EINVAL;
3776 goto out_free;
3777 }
3778 err = ieee80211_get_ratemask(wiphy->bands[band],
3779 nla_data(attr),
3780 nla_len(attr),
3781 &request->rates[band]);
3782 if (err)
3783 goto out_free;
3784 }
3785 }
3786
3787 request->no_cck =
3788 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3789
3790 request->dev = dev;
3791 request->wiphy = &rdev->wiphy;
3792
3793 rdev->scan_req = request;
3794 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3795
3796 if (!err) {
3797 nl80211_send_scan_start(rdev, dev);
3798 dev_hold(dev);
3799 } else {
3800 out_free:
3801 rdev->scan_req = NULL;
3802 kfree(request);
3803 }
3804
3805 return err;
3806 }
3807
3808 static int nl80211_start_sched_scan(struct sk_buff *skb,
3809 struct genl_info *info)
3810 {
3811 struct cfg80211_sched_scan_request *request;
3812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3813 struct net_device *dev = info->user_ptr[1];
3814 struct nlattr *attr;
3815 struct wiphy *wiphy;
3816 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3817 u32 interval;
3818 enum ieee80211_band band;
3819 size_t ie_len;
3820 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3821
3822 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3823 !rdev->ops->sched_scan_start)
3824 return -EOPNOTSUPP;
3825
3826 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3827 return -EINVAL;
3828
3829 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3830 return -EINVAL;
3831
3832 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3833 if (interval == 0)
3834 return -EINVAL;
3835
3836 wiphy = &rdev->wiphy;
3837
3838 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3839 n_channels = validate_scan_freqs(
3840 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3841 if (!n_channels)
3842 return -EINVAL;
3843 } else {
3844 n_channels = 0;
3845
3846 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3847 if (wiphy->bands[band])
3848 n_channels += wiphy->bands[band]->n_channels;
3849 }
3850
3851 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3852 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3853 tmp)
3854 n_ssids++;
3855
3856 if (n_ssids > wiphy->max_sched_scan_ssids)
3857 return -EINVAL;
3858
3859 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3860 nla_for_each_nested(attr,
3861 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3862 tmp)
3863 n_match_sets++;
3864
3865 if (n_match_sets > wiphy->max_match_sets)
3866 return -EINVAL;
3867
3868 if (info->attrs[NL80211_ATTR_IE])
3869 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3870 else
3871 ie_len = 0;
3872
3873 if (ie_len > wiphy->max_sched_scan_ie_len)
3874 return -EINVAL;
3875
3876 mutex_lock(&rdev->sched_scan_mtx);
3877
3878 if (rdev->sched_scan_req) {
3879 err = -EINPROGRESS;
3880 goto out;
3881 }
3882
3883 request = kzalloc(sizeof(*request)
3884 + sizeof(*request->ssids) * n_ssids
3885 + sizeof(*request->match_sets) * n_match_sets
3886 + sizeof(*request->channels) * n_channels
3887 + ie_len, GFP_KERNEL);
3888 if (!request) {
3889 err = -ENOMEM;
3890 goto out;
3891 }
3892
3893 if (n_ssids)
3894 request->ssids = (void *)&request->channels[n_channels];
3895 request->n_ssids = n_ssids;
3896 if (ie_len) {
3897 if (request->ssids)
3898 request->ie = (void *)(request->ssids + n_ssids);
3899 else
3900 request->ie = (void *)(request->channels + n_channels);
3901 }
3902
3903 if (n_match_sets) {
3904 if (request->ie)
3905 request->match_sets = (void *)(request->ie + ie_len);
3906 else if (request->ssids)
3907 request->match_sets =
3908 (void *)(request->ssids + n_ssids);
3909 else
3910 request->match_sets =
3911 (void *)(request->channels + n_channels);
3912 }
3913 request->n_match_sets = n_match_sets;
3914
3915 i = 0;
3916 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3917 /* user specified, bail out if channel not found */
3918 nla_for_each_nested(attr,
3919 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3920 tmp) {
3921 struct ieee80211_channel *chan;
3922
3923 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3924
3925 if (!chan) {
3926 err = -EINVAL;
3927 goto out_free;
3928 }
3929
3930 /* ignore disabled channels */
3931 if (chan->flags & IEEE80211_CHAN_DISABLED)
3932 continue;
3933
3934 request->channels[i] = chan;
3935 i++;
3936 }
3937 } else {
3938 /* all channels */
3939 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3940 int j;
3941 if (!wiphy->bands[band])
3942 continue;
3943 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3944 struct ieee80211_channel *chan;
3945
3946 chan = &wiphy->bands[band]->channels[j];
3947
3948 if (chan->flags & IEEE80211_CHAN_DISABLED)
3949 continue;
3950
3951 request->channels[i] = chan;
3952 i++;
3953 }
3954 }
3955 }
3956
3957 if (!i) {
3958 err = -EINVAL;
3959 goto out_free;
3960 }
3961
3962 request->n_channels = i;
3963
3964 i = 0;
3965 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3966 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3967 tmp) {
3968 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3969 err = -EINVAL;
3970 goto out_free;
3971 }
3972 request->ssids[i].ssid_len = nla_len(attr);
3973 memcpy(request->ssids[i].ssid, nla_data(attr),
3974 nla_len(attr));
3975 i++;
3976 }
3977 }
3978
3979 i = 0;
3980 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3981 nla_for_each_nested(attr,
3982 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3983 tmp) {
3984 struct nlattr *ssid;
3985
3986 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3987 nla_data(attr), nla_len(attr),
3988 nl80211_match_policy);
3989 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3990 if (ssid) {
3991 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3992 err = -EINVAL;
3993 goto out_free;
3994 }
3995 memcpy(request->match_sets[i].ssid.ssid,
3996 nla_data(ssid), nla_len(ssid));
3997 request->match_sets[i].ssid.ssid_len =
3998 nla_len(ssid);
3999 }
4000 i++;
4001 }
4002 }
4003
4004 if (info->attrs[NL80211_ATTR_IE]) {
4005 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4006 memcpy((void *)request->ie,
4007 nla_data(info->attrs[NL80211_ATTR_IE]),
4008 request->ie_len);
4009 }
4010
4011 request->dev = dev;
4012 request->wiphy = &rdev->wiphy;
4013 request->interval = interval;
4014
4015 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4016 if (!err) {
4017 rdev->sched_scan_req = request;
4018 nl80211_send_sched_scan(rdev, dev,
4019 NL80211_CMD_START_SCHED_SCAN);
4020 goto out;
4021 }
4022
4023 out_free:
4024 kfree(request);
4025 out:
4026 mutex_unlock(&rdev->sched_scan_mtx);
4027 return err;
4028 }
4029
4030 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4031 struct genl_info *info)
4032 {
4033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4034 int err;
4035
4036 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4037 !rdev->ops->sched_scan_stop)
4038 return -EOPNOTSUPP;
4039
4040 mutex_lock(&rdev->sched_scan_mtx);
4041 err = __cfg80211_stop_sched_scan(rdev, false);
4042 mutex_unlock(&rdev->sched_scan_mtx);
4043
4044 return err;
4045 }
4046
4047 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4048 u32 seq, int flags,
4049 struct cfg80211_registered_device *rdev,
4050 struct wireless_dev *wdev,
4051 struct cfg80211_internal_bss *intbss)
4052 {
4053 struct cfg80211_bss *res = &intbss->pub;
4054 void *hdr;
4055 struct nlattr *bss;
4056 int i;
4057
4058 ASSERT_WDEV_LOCK(wdev);
4059
4060 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4061 NL80211_CMD_NEW_SCAN_RESULTS);
4062 if (!hdr)
4063 return -1;
4064
4065 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4066
4067 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4068 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4069
4070 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4071 if (!bss)
4072 goto nla_put_failure;
4073 if (!is_zero_ether_addr(res->bssid))
4074 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4075 if (res->information_elements && res->len_information_elements)
4076 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4077 res->len_information_elements,
4078 res->information_elements);
4079 if (res->beacon_ies && res->len_beacon_ies &&
4080 res->beacon_ies != res->information_elements)
4081 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4082 res->len_beacon_ies, res->beacon_ies);
4083 if (res->tsf)
4084 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4085 if (res->beacon_interval)
4086 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4087 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4088 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4089 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4090 jiffies_to_msecs(jiffies - intbss->ts));
4091
4092 switch (rdev->wiphy.signal_type) {
4093 case CFG80211_SIGNAL_TYPE_MBM:
4094 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4095 break;
4096 case CFG80211_SIGNAL_TYPE_UNSPEC:
4097 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4098 break;
4099 default:
4100 break;
4101 }
4102
4103 switch (wdev->iftype) {
4104 case NL80211_IFTYPE_P2P_CLIENT:
4105 case NL80211_IFTYPE_STATION:
4106 if (intbss == wdev->current_bss)
4107 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4108 NL80211_BSS_STATUS_ASSOCIATED);
4109 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
4110 if (intbss != wdev->auth_bsses[i])
4111 continue;
4112 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4113 NL80211_BSS_STATUS_AUTHENTICATED);
4114 break;
4115 }
4116 break;
4117 case NL80211_IFTYPE_ADHOC:
4118 if (intbss == wdev->current_bss)
4119 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4120 NL80211_BSS_STATUS_IBSS_JOINED);
4121 break;
4122 default:
4123 break;
4124 }
4125
4126 nla_nest_end(msg, bss);
4127
4128 return genlmsg_end(msg, hdr);
4129
4130 nla_put_failure:
4131 genlmsg_cancel(msg, hdr);
4132 return -EMSGSIZE;
4133 }
4134
4135 static int nl80211_dump_scan(struct sk_buff *skb,
4136 struct netlink_callback *cb)
4137 {
4138 struct cfg80211_registered_device *rdev;
4139 struct net_device *dev;
4140 struct cfg80211_internal_bss *scan;
4141 struct wireless_dev *wdev;
4142 int start = cb->args[1], idx = 0;
4143 int err;
4144
4145 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4146 if (err)
4147 return err;
4148
4149 wdev = dev->ieee80211_ptr;
4150
4151 wdev_lock(wdev);
4152 spin_lock_bh(&rdev->bss_lock);
4153 cfg80211_bss_expire(rdev);
4154
4155 cb->seq = rdev->bss_generation;
4156
4157 list_for_each_entry(scan, &rdev->bss_list, list) {
4158 if (++idx <= start)
4159 continue;
4160 if (nl80211_send_bss(skb, cb,
4161 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4162 rdev, wdev, scan) < 0) {
4163 idx--;
4164 break;
4165 }
4166 }
4167
4168 spin_unlock_bh(&rdev->bss_lock);
4169 wdev_unlock(wdev);
4170
4171 cb->args[1] = idx;
4172 nl80211_finish_netdev_dump(rdev);
4173
4174 return skb->len;
4175 }
4176
4177 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4178 int flags, struct net_device *dev,
4179 struct survey_info *survey)
4180 {
4181 void *hdr;
4182 struct nlattr *infoattr;
4183
4184 hdr = nl80211hdr_put(msg, pid, seq, flags,
4185 NL80211_CMD_NEW_SURVEY_RESULTS);
4186 if (!hdr)
4187 return -ENOMEM;
4188
4189 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4190
4191 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4192 if (!infoattr)
4193 goto nla_put_failure;
4194
4195 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4196 survey->channel->center_freq);
4197 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4198 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4199 survey->noise);
4200 if (survey->filled & SURVEY_INFO_IN_USE)
4201 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4202 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4203 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4204 survey->channel_time);
4205 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4206 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4207 survey->channel_time_busy);
4208 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4209 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4210 survey->channel_time_ext_busy);
4211 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4212 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4213 survey->channel_time_rx);
4214 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4215 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4216 survey->channel_time_tx);
4217
4218 nla_nest_end(msg, infoattr);
4219
4220 return genlmsg_end(msg, hdr);
4221
4222 nla_put_failure:
4223 genlmsg_cancel(msg, hdr);
4224 return -EMSGSIZE;
4225 }
4226
4227 static int nl80211_dump_survey(struct sk_buff *skb,
4228 struct netlink_callback *cb)
4229 {
4230 struct survey_info survey;
4231 struct cfg80211_registered_device *dev;
4232 struct net_device *netdev;
4233 int survey_idx = cb->args[1];
4234 int res;
4235
4236 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4237 if (res)
4238 return res;
4239
4240 if (!dev->ops->dump_survey) {
4241 res = -EOPNOTSUPP;
4242 goto out_err;
4243 }
4244
4245 while (1) {
4246 struct ieee80211_channel *chan;
4247
4248 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4249 &survey);
4250 if (res == -ENOENT)
4251 break;
4252 if (res)
4253 goto out_err;
4254
4255 /* Survey without a channel doesn't make sense */
4256 if (!survey.channel) {
4257 res = -EINVAL;
4258 goto out;
4259 }
4260
4261 chan = ieee80211_get_channel(&dev->wiphy,
4262 survey.channel->center_freq);
4263 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4264 survey_idx++;
4265 continue;
4266 }
4267
4268 if (nl80211_send_survey(skb,
4269 NETLINK_CB(cb->skb).pid,
4270 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4271 netdev,
4272 &survey) < 0)
4273 goto out;
4274 survey_idx++;
4275 }
4276
4277 out:
4278 cb->args[1] = survey_idx;
4279 res = skb->len;
4280 out_err:
4281 nl80211_finish_netdev_dump(dev);
4282 return res;
4283 }
4284
4285 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4286 {
4287 return auth_type <= NL80211_AUTHTYPE_MAX;
4288 }
4289
4290 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4291 {
4292 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4293 NL80211_WPA_VERSION_2));
4294 }
4295
4296 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4297 {
4298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4299 struct net_device *dev = info->user_ptr[1];
4300 struct ieee80211_channel *chan;
4301 const u8 *bssid, *ssid, *ie = NULL;
4302 int err, ssid_len, ie_len = 0;
4303 enum nl80211_auth_type auth_type;
4304 struct key_parse key;
4305 bool local_state_change;
4306
4307 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4308 return -EINVAL;
4309
4310 if (!info->attrs[NL80211_ATTR_MAC])
4311 return -EINVAL;
4312
4313 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4314 return -EINVAL;
4315
4316 if (!info->attrs[NL80211_ATTR_SSID])
4317 return -EINVAL;
4318
4319 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4320 return -EINVAL;
4321
4322 err = nl80211_parse_key(info, &key);
4323 if (err)
4324 return err;
4325
4326 if (key.idx >= 0) {
4327 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4328 return -EINVAL;
4329 if (!key.p.key || !key.p.key_len)
4330 return -EINVAL;
4331 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4332 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4333 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4334 key.p.key_len != WLAN_KEY_LEN_WEP104))
4335 return -EINVAL;
4336 if (key.idx > 4)
4337 return -EINVAL;
4338 } else {
4339 key.p.key_len = 0;
4340 key.p.key = NULL;
4341 }
4342
4343 if (key.idx >= 0) {
4344 int i;
4345 bool ok = false;
4346 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4347 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4348 ok = true;
4349 break;
4350 }
4351 }
4352 if (!ok)
4353 return -EINVAL;
4354 }
4355
4356 if (!rdev->ops->auth)
4357 return -EOPNOTSUPP;
4358
4359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4360 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4361 return -EOPNOTSUPP;
4362
4363 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4364 chan = ieee80211_get_channel(&rdev->wiphy,
4365 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4366 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4367 return -EINVAL;
4368
4369 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4370 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4371
4372 if (info->attrs[NL80211_ATTR_IE]) {
4373 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4374 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4375 }
4376
4377 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4378 if (!nl80211_valid_auth_type(auth_type))
4379 return -EINVAL;
4380
4381 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4382
4383 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4384 ssid, ssid_len, ie, ie_len,
4385 key.p.key, key.p.key_len, key.idx,
4386 local_state_change);
4387 }
4388
4389 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4390 struct genl_info *info,
4391 struct cfg80211_crypto_settings *settings,
4392 int cipher_limit)
4393 {
4394 memset(settings, 0, sizeof(*settings));
4395
4396 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4397
4398 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4399 u16 proto;
4400 proto = nla_get_u16(
4401 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4402 settings->control_port_ethertype = cpu_to_be16(proto);
4403 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4404 proto != ETH_P_PAE)
4405 return -EINVAL;
4406 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4407 settings->control_port_no_encrypt = true;
4408 } else
4409 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4410
4411 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4412 void *data;
4413 int len, i;
4414
4415 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4416 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4417 settings->n_ciphers_pairwise = len / sizeof(u32);
4418
4419 if (len % sizeof(u32))
4420 return -EINVAL;
4421
4422 if (settings->n_ciphers_pairwise > cipher_limit)
4423 return -EINVAL;
4424
4425 memcpy(settings->ciphers_pairwise, data, len);
4426
4427 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4428 if (!cfg80211_supported_cipher_suite(
4429 &rdev->wiphy,
4430 settings->ciphers_pairwise[i]))
4431 return -EINVAL;
4432 }
4433
4434 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4435 settings->cipher_group =
4436 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4437 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4438 settings->cipher_group))
4439 return -EINVAL;
4440 }
4441
4442 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4443 settings->wpa_versions =
4444 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4445 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4446 return -EINVAL;
4447 }
4448
4449 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4450 void *data;
4451 int len;
4452
4453 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4454 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4455 settings->n_akm_suites = len / sizeof(u32);
4456
4457 if (len % sizeof(u32))
4458 return -EINVAL;
4459
4460 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4461 return -EINVAL;
4462
4463 memcpy(settings->akm_suites, data, len);
4464 }
4465
4466 return 0;
4467 }
4468
4469 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4470 {
4471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4472 struct net_device *dev = info->user_ptr[1];
4473 struct cfg80211_crypto_settings crypto;
4474 struct ieee80211_channel *chan;
4475 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4476 int err, ssid_len, ie_len = 0;
4477 bool use_mfp = false;
4478 u32 flags = 0;
4479 struct ieee80211_ht_cap *ht_capa = NULL;
4480 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4481
4482 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4483 return -EINVAL;
4484
4485 if (!info->attrs[NL80211_ATTR_MAC] ||
4486 !info->attrs[NL80211_ATTR_SSID] ||
4487 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4488 return -EINVAL;
4489
4490 if (!rdev->ops->assoc)
4491 return -EOPNOTSUPP;
4492
4493 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4494 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4495 return -EOPNOTSUPP;
4496
4497 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4498
4499 chan = ieee80211_get_channel(&rdev->wiphy,
4500 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4501 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4502 return -EINVAL;
4503
4504 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4505 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4506
4507 if (info->attrs[NL80211_ATTR_IE]) {
4508 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4509 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4510 }
4511
4512 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4513 enum nl80211_mfp mfp =
4514 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4515 if (mfp == NL80211_MFP_REQUIRED)
4516 use_mfp = true;
4517 else if (mfp != NL80211_MFP_NO)
4518 return -EINVAL;
4519 }
4520
4521 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4522 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4523
4524 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4525 flags |= ASSOC_REQ_DISABLE_HT;
4526
4527 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4528 ht_capa_mask =
4529 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4530
4531 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4532 if (!ht_capa_mask)
4533 return -EINVAL;
4534 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4535 }
4536
4537 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4538 if (!err)
4539 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4540 ssid, ssid_len, ie, ie_len, use_mfp,
4541 &crypto, flags, ht_capa,
4542 ht_capa_mask);
4543
4544 return err;
4545 }
4546
4547 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4548 {
4549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4550 struct net_device *dev = info->user_ptr[1];
4551 const u8 *ie = NULL, *bssid;
4552 int ie_len = 0;
4553 u16 reason_code;
4554 bool local_state_change;
4555
4556 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4557 return -EINVAL;
4558
4559 if (!info->attrs[NL80211_ATTR_MAC])
4560 return -EINVAL;
4561
4562 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4563 return -EINVAL;
4564
4565 if (!rdev->ops->deauth)
4566 return -EOPNOTSUPP;
4567
4568 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4569 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4570 return -EOPNOTSUPP;
4571
4572 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4573
4574 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4575 if (reason_code == 0) {
4576 /* Reason Code 0 is reserved */
4577 return -EINVAL;
4578 }
4579
4580 if (info->attrs[NL80211_ATTR_IE]) {
4581 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4582 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4583 }
4584
4585 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4586
4587 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4588 local_state_change);
4589 }
4590
4591 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4592 {
4593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4594 struct net_device *dev = info->user_ptr[1];
4595 const u8 *ie = NULL, *bssid;
4596 int ie_len = 0;
4597 u16 reason_code;
4598 bool local_state_change;
4599
4600 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4601 return -EINVAL;
4602
4603 if (!info->attrs[NL80211_ATTR_MAC])
4604 return -EINVAL;
4605
4606 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4607 return -EINVAL;
4608
4609 if (!rdev->ops->disassoc)
4610 return -EOPNOTSUPP;
4611
4612 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4613 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4614 return -EOPNOTSUPP;
4615
4616 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4617
4618 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4619 if (reason_code == 0) {
4620 /* Reason Code 0 is reserved */
4621 return -EINVAL;
4622 }
4623
4624 if (info->attrs[NL80211_ATTR_IE]) {
4625 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4626 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4627 }
4628
4629 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4630
4631 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4632 local_state_change);
4633 }
4634
4635 static bool
4636 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4637 int mcast_rate[IEEE80211_NUM_BANDS],
4638 int rateval)
4639 {
4640 struct wiphy *wiphy = &rdev->wiphy;
4641 bool found = false;
4642 int band, i;
4643
4644 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4645 struct ieee80211_supported_band *sband;
4646
4647 sband = wiphy->bands[band];
4648 if (!sband)
4649 continue;
4650
4651 for (i = 0; i < sband->n_bitrates; i++) {
4652 if (sband->bitrates[i].bitrate == rateval) {
4653 mcast_rate[band] = i + 1;
4654 found = true;
4655 break;
4656 }
4657 }
4658 }
4659
4660 return found;
4661 }
4662
4663 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4664 {
4665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4666 struct net_device *dev = info->user_ptr[1];
4667 struct cfg80211_ibss_params ibss;
4668 struct wiphy *wiphy;
4669 struct cfg80211_cached_keys *connkeys = NULL;
4670 int err;
4671
4672 memset(&ibss, 0, sizeof(ibss));
4673
4674 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4675 return -EINVAL;
4676
4677 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4678 !info->attrs[NL80211_ATTR_SSID] ||
4679 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4680 return -EINVAL;
4681
4682 ibss.beacon_interval = 100;
4683
4684 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4685 ibss.beacon_interval =
4686 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4687 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4688 return -EINVAL;
4689 }
4690
4691 if (!rdev->ops->join_ibss)
4692 return -EOPNOTSUPP;
4693
4694 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4695 return -EOPNOTSUPP;
4696
4697 wiphy = &rdev->wiphy;
4698
4699 if (info->attrs[NL80211_ATTR_MAC]) {
4700 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4701
4702 if (!is_valid_ether_addr(ibss.bssid))
4703 return -EINVAL;
4704 }
4705 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4706 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4707
4708 if (info->attrs[NL80211_ATTR_IE]) {
4709 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4710 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4711 }
4712
4713 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4714 enum nl80211_channel_type channel_type;
4715
4716 channel_type = nla_get_u32(
4717 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4718 if (channel_type != NL80211_CHAN_NO_HT &&
4719 channel_type != NL80211_CHAN_HT20 &&
4720 channel_type != NL80211_CHAN_HT40MINUS &&
4721 channel_type != NL80211_CHAN_HT40PLUS)
4722 return -EINVAL;
4723
4724 if (channel_type != NL80211_CHAN_NO_HT &&
4725 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
4726 return -EINVAL;
4727
4728 ibss.channel_type = channel_type;
4729 } else {
4730 ibss.channel_type = NL80211_CHAN_NO_HT;
4731 }
4732
4733 ibss.channel = rdev_freq_to_chan(rdev,
4734 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
4735 ibss.channel_type);
4736 if (!ibss.channel ||
4737 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4738 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4739 return -EINVAL;
4740
4741 /* Both channels should be able to initiate communication */
4742 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
4743 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
4744 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
4745 ibss.channel_type))
4746 return -EINVAL;
4747
4748 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4749 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4750
4751 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4752 u8 *rates =
4753 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4754 int n_rates =
4755 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4756 struct ieee80211_supported_band *sband =
4757 wiphy->bands[ibss.channel->band];
4758 int err;
4759
4760 err = ieee80211_get_ratemask(sband, rates, n_rates,
4761 &ibss.basic_rates);
4762 if (err)
4763 return err;
4764 }
4765
4766 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4767 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4768 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4769 return -EINVAL;
4770
4771 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4772 connkeys = nl80211_parse_connkeys(rdev,
4773 info->attrs[NL80211_ATTR_KEYS]);
4774 if (IS_ERR(connkeys))
4775 return PTR_ERR(connkeys);
4776 }
4777
4778 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4779 if (err)
4780 kfree(connkeys);
4781 return err;
4782 }
4783
4784 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4785 {
4786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4787 struct net_device *dev = info->user_ptr[1];
4788
4789 if (!rdev->ops->leave_ibss)
4790 return -EOPNOTSUPP;
4791
4792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4793 return -EOPNOTSUPP;
4794
4795 return cfg80211_leave_ibss(rdev, dev, false);
4796 }
4797
4798 #ifdef CONFIG_NL80211_TESTMODE
4799 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4800 .name = "testmode",
4801 };
4802
4803 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4804 {
4805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4806 int err;
4807
4808 if (!info->attrs[NL80211_ATTR_TESTDATA])
4809 return -EINVAL;
4810
4811 err = -EOPNOTSUPP;
4812 if (rdev->ops->testmode_cmd) {
4813 rdev->testmode_info = info;
4814 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4815 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4816 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4817 rdev->testmode_info = NULL;
4818 }
4819
4820 return err;
4821 }
4822
4823 static int nl80211_testmode_dump(struct sk_buff *skb,
4824 struct netlink_callback *cb)
4825 {
4826 struct cfg80211_registered_device *rdev;
4827 int err;
4828 long phy_idx;
4829 void *data = NULL;
4830 int data_len = 0;
4831
4832 if (cb->args[0]) {
4833 /*
4834 * 0 is a valid index, but not valid for args[0],
4835 * so we need to offset by 1.
4836 */
4837 phy_idx = cb->args[0] - 1;
4838 } else {
4839 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4840 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4841 nl80211_policy);
4842 if (err)
4843 return err;
4844 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
4845 phy_idx = nla_get_u32(
4846 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4847 } else {
4848 struct net_device *netdev;
4849
4850 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
4851 nl80211_fam.attrbuf,
4852 &rdev, &netdev);
4853 if (err)
4854 return err;
4855 dev_put(netdev);
4856 phy_idx = rdev->wiphy_idx;
4857 cfg80211_unlock_rdev(rdev);
4858 }
4859 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4860 cb->args[1] =
4861 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4862 }
4863
4864 if (cb->args[1]) {
4865 data = nla_data((void *)cb->args[1]);
4866 data_len = nla_len((void *)cb->args[1]);
4867 }
4868
4869 mutex_lock(&cfg80211_mutex);
4870 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4871 if (!rdev) {
4872 mutex_unlock(&cfg80211_mutex);
4873 return -ENOENT;
4874 }
4875 cfg80211_lock_rdev(rdev);
4876 mutex_unlock(&cfg80211_mutex);
4877
4878 if (!rdev->ops->testmode_dump) {
4879 err = -EOPNOTSUPP;
4880 goto out_err;
4881 }
4882
4883 while (1) {
4884 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4885 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4886 NL80211_CMD_TESTMODE);
4887 struct nlattr *tmdata;
4888
4889 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx) < 0) {
4890 genlmsg_cancel(skb, hdr);
4891 break;
4892 }
4893
4894 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4895 if (!tmdata) {
4896 genlmsg_cancel(skb, hdr);
4897 break;
4898 }
4899 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
4900 data, data_len);
4901 nla_nest_end(skb, tmdata);
4902
4903 if (err == -ENOBUFS || err == -ENOENT) {
4904 genlmsg_cancel(skb, hdr);
4905 break;
4906 } else if (err) {
4907 genlmsg_cancel(skb, hdr);
4908 goto out_err;
4909 }
4910
4911 genlmsg_end(skb, hdr);
4912 }
4913
4914 err = skb->len;
4915 /* see above */
4916 cb->args[0] = phy_idx + 1;
4917 out_err:
4918 cfg80211_unlock_rdev(rdev);
4919 return err;
4920 }
4921
4922 static struct sk_buff *
4923 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4924 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4925 {
4926 struct sk_buff *skb;
4927 void *hdr;
4928 struct nlattr *data;
4929
4930 skb = nlmsg_new(approxlen + 100, gfp);
4931 if (!skb)
4932 return NULL;
4933
4934 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4935 if (!hdr) {
4936 kfree_skb(skb);
4937 return NULL;
4938 }
4939
4940 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4941 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4942
4943 ((void **)skb->cb)[0] = rdev;
4944 ((void **)skb->cb)[1] = hdr;
4945 ((void **)skb->cb)[2] = data;
4946
4947 return skb;
4948
4949 nla_put_failure:
4950 kfree_skb(skb);
4951 return NULL;
4952 }
4953
4954 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4955 int approxlen)
4956 {
4957 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4958
4959 if (WARN_ON(!rdev->testmode_info))
4960 return NULL;
4961
4962 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4963 rdev->testmode_info->snd_pid,
4964 rdev->testmode_info->snd_seq,
4965 GFP_KERNEL);
4966 }
4967 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4968
4969 int cfg80211_testmode_reply(struct sk_buff *skb)
4970 {
4971 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4972 void *hdr = ((void **)skb->cb)[1];
4973 struct nlattr *data = ((void **)skb->cb)[2];
4974
4975 if (WARN_ON(!rdev->testmode_info)) {
4976 kfree_skb(skb);
4977 return -EINVAL;
4978 }
4979
4980 nla_nest_end(skb, data);
4981 genlmsg_end(skb, hdr);
4982 return genlmsg_reply(skb, rdev->testmode_info);
4983 }
4984 EXPORT_SYMBOL(cfg80211_testmode_reply);
4985
4986 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4987 int approxlen, gfp_t gfp)
4988 {
4989 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4990
4991 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4992 }
4993 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4994
4995 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4996 {
4997 void *hdr = ((void **)skb->cb)[1];
4998 struct nlattr *data = ((void **)skb->cb)[2];
4999
5000 nla_nest_end(skb, data);
5001 genlmsg_end(skb, hdr);
5002 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5003 }
5004 EXPORT_SYMBOL(cfg80211_testmode_event);
5005 #endif
5006
5007 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5008 {
5009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5010 struct net_device *dev = info->user_ptr[1];
5011 struct cfg80211_connect_params connect;
5012 struct wiphy *wiphy;
5013 struct cfg80211_cached_keys *connkeys = NULL;
5014 int err;
5015
5016 memset(&connect, 0, sizeof(connect));
5017
5018 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5019 return -EINVAL;
5020
5021 if (!info->attrs[NL80211_ATTR_SSID] ||
5022 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5023 return -EINVAL;
5024
5025 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5026 connect.auth_type =
5027 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5028 if (!nl80211_valid_auth_type(connect.auth_type))
5029 return -EINVAL;
5030 } else
5031 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5032
5033 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5034
5035 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5036 NL80211_MAX_NR_CIPHER_SUITES);
5037 if (err)
5038 return err;
5039
5040 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5041 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5042 return -EOPNOTSUPP;
5043
5044 wiphy = &rdev->wiphy;
5045
5046 if (info->attrs[NL80211_ATTR_MAC])
5047 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5048 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5049 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5050
5051 if (info->attrs[NL80211_ATTR_IE]) {
5052 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5053 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5054 }
5055
5056 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5057 connect.channel =
5058 ieee80211_get_channel(wiphy,
5059 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5060 if (!connect.channel ||
5061 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5062 return -EINVAL;
5063 }
5064
5065 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5066 connkeys = nl80211_parse_connkeys(rdev,
5067 info->attrs[NL80211_ATTR_KEYS]);
5068 if (IS_ERR(connkeys))
5069 return PTR_ERR(connkeys);
5070 }
5071
5072 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5073 connect.flags |= ASSOC_REQ_DISABLE_HT;
5074
5075 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5076 memcpy(&connect.ht_capa_mask,
5077 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5078 sizeof(connect.ht_capa_mask));
5079
5080 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5081 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5082 return -EINVAL;
5083 memcpy(&connect.ht_capa,
5084 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5085 sizeof(connect.ht_capa));
5086 }
5087
5088 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5089 if (err)
5090 kfree(connkeys);
5091 return err;
5092 }
5093
5094 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5095 {
5096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5097 struct net_device *dev = info->user_ptr[1];
5098 u16 reason;
5099
5100 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5101 reason = WLAN_REASON_DEAUTH_LEAVING;
5102 else
5103 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5104
5105 if (reason == 0)
5106 return -EINVAL;
5107
5108 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5109 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5110 return -EOPNOTSUPP;
5111
5112 return cfg80211_disconnect(rdev, dev, reason, true);
5113 }
5114
5115 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5116 {
5117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5118 struct net *net;
5119 int err;
5120 u32 pid;
5121
5122 if (!info->attrs[NL80211_ATTR_PID])
5123 return -EINVAL;
5124
5125 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5126
5127 net = get_net_ns_by_pid(pid);
5128 if (IS_ERR(net))
5129 return PTR_ERR(net);
5130
5131 err = 0;
5132
5133 /* check if anything to do */
5134 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5135 err = cfg80211_switch_netns(rdev, net);
5136
5137 put_net(net);
5138 return err;
5139 }
5140
5141 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5142 {
5143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5144 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5145 struct cfg80211_pmksa *pmksa) = NULL;
5146 struct net_device *dev = info->user_ptr[1];
5147 struct cfg80211_pmksa pmksa;
5148
5149 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5150
5151 if (!info->attrs[NL80211_ATTR_MAC])
5152 return -EINVAL;
5153
5154 if (!info->attrs[NL80211_ATTR_PMKID])
5155 return -EINVAL;
5156
5157 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5158 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5159
5160 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5162 return -EOPNOTSUPP;
5163
5164 switch (info->genlhdr->cmd) {
5165 case NL80211_CMD_SET_PMKSA:
5166 rdev_ops = rdev->ops->set_pmksa;
5167 break;
5168 case NL80211_CMD_DEL_PMKSA:
5169 rdev_ops = rdev->ops->del_pmksa;
5170 break;
5171 default:
5172 WARN_ON(1);
5173 break;
5174 }
5175
5176 if (!rdev_ops)
5177 return -EOPNOTSUPP;
5178
5179 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5180 }
5181
5182 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5183 {
5184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5185 struct net_device *dev = info->user_ptr[1];
5186
5187 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5189 return -EOPNOTSUPP;
5190
5191 if (!rdev->ops->flush_pmksa)
5192 return -EOPNOTSUPP;
5193
5194 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5195 }
5196
5197 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5198 {
5199 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5200 struct net_device *dev = info->user_ptr[1];
5201 u8 action_code, dialog_token;
5202 u16 status_code;
5203 u8 *peer;
5204
5205 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5206 !rdev->ops->tdls_mgmt)
5207 return -EOPNOTSUPP;
5208
5209 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5210 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5211 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5212 !info->attrs[NL80211_ATTR_IE] ||
5213 !info->attrs[NL80211_ATTR_MAC])
5214 return -EINVAL;
5215
5216 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5217 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5218 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5219 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5220
5221 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5222 dialog_token, status_code,
5223 nla_data(info->attrs[NL80211_ATTR_IE]),
5224 nla_len(info->attrs[NL80211_ATTR_IE]));
5225 }
5226
5227 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5228 {
5229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5230 struct net_device *dev = info->user_ptr[1];
5231 enum nl80211_tdls_operation operation;
5232 u8 *peer;
5233
5234 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5235 !rdev->ops->tdls_oper)
5236 return -EOPNOTSUPP;
5237
5238 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5239 !info->attrs[NL80211_ATTR_MAC])
5240 return -EINVAL;
5241
5242 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5243 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5244
5245 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5246 }
5247
5248 static int nl80211_remain_on_channel(struct sk_buff *skb,
5249 struct genl_info *info)
5250 {
5251 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5252 struct net_device *dev = info->user_ptr[1];
5253 struct ieee80211_channel *chan;
5254 struct sk_buff *msg;
5255 void *hdr;
5256 u64 cookie;
5257 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5258 u32 freq, duration;
5259 int err;
5260
5261 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5262 !info->attrs[NL80211_ATTR_DURATION])
5263 return -EINVAL;
5264
5265 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5266
5267 /*
5268 * We should be on that channel for at least one jiffie,
5269 * and more than 5 seconds seems excessive.
5270 */
5271 if (!duration || !msecs_to_jiffies(duration) ||
5272 duration > rdev->wiphy.max_remain_on_channel_duration)
5273 return -EINVAL;
5274
5275 if (!rdev->ops->remain_on_channel ||
5276 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5277 return -EOPNOTSUPP;
5278
5279 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5280 channel_type = nla_get_u32(
5281 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5282 if (channel_type != NL80211_CHAN_NO_HT &&
5283 channel_type != NL80211_CHAN_HT20 &&
5284 channel_type != NL80211_CHAN_HT40PLUS &&
5285 channel_type != NL80211_CHAN_HT40MINUS)
5286 return -EINVAL;
5287 }
5288
5289 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5290 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5291 if (chan == NULL)
5292 return -EINVAL;
5293
5294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5295 if (!msg)
5296 return -ENOMEM;
5297
5298 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5299 NL80211_CMD_REMAIN_ON_CHANNEL);
5300
5301 if (IS_ERR(hdr)) {
5302 err = PTR_ERR(hdr);
5303 goto free_msg;
5304 }
5305
5306 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5307 channel_type, duration, &cookie);
5308
5309 if (err)
5310 goto free_msg;
5311
5312 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5313
5314 genlmsg_end(msg, hdr);
5315
5316 return genlmsg_reply(msg, info);
5317
5318 nla_put_failure:
5319 err = -ENOBUFS;
5320 free_msg:
5321 nlmsg_free(msg);
5322 return err;
5323 }
5324
5325 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5326 struct genl_info *info)
5327 {
5328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5329 struct net_device *dev = info->user_ptr[1];
5330 u64 cookie;
5331
5332 if (!info->attrs[NL80211_ATTR_COOKIE])
5333 return -EINVAL;
5334
5335 if (!rdev->ops->cancel_remain_on_channel)
5336 return -EOPNOTSUPP;
5337
5338 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5339
5340 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5341 }
5342
5343 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5344 u8 *rates, u8 rates_len)
5345 {
5346 u8 i;
5347 u32 mask = 0;
5348
5349 for (i = 0; i < rates_len; i++) {
5350 int rate = (rates[i] & 0x7f) * 5;
5351 int ridx;
5352 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5353 struct ieee80211_rate *srate =
5354 &sband->bitrates[ridx];
5355 if (rate == srate->bitrate) {
5356 mask |= 1 << ridx;
5357 break;
5358 }
5359 }
5360 if (ridx == sband->n_bitrates)
5361 return 0; /* rate not found */
5362 }
5363
5364 return mask;
5365 }
5366
5367 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5368 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5369 .len = NL80211_MAX_SUPP_RATES },
5370 };
5371
5372 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5373 struct genl_info *info)
5374 {
5375 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5377 struct cfg80211_bitrate_mask mask;
5378 int rem, i;
5379 struct net_device *dev = info->user_ptr[1];
5380 struct nlattr *tx_rates;
5381 struct ieee80211_supported_band *sband;
5382
5383 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5384 return -EINVAL;
5385
5386 if (!rdev->ops->set_bitrate_mask)
5387 return -EOPNOTSUPP;
5388
5389 memset(&mask, 0, sizeof(mask));
5390 /* Default to all rates enabled */
5391 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5392 sband = rdev->wiphy.bands[i];
5393 mask.control[i].legacy =
5394 sband ? (1 << sband->n_bitrates) - 1 : 0;
5395 }
5396
5397 /*
5398 * The nested attribute uses enum nl80211_band as the index. This maps
5399 * directly to the enum ieee80211_band values used in cfg80211.
5400 */
5401 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5402 {
5403 enum ieee80211_band band = nla_type(tx_rates);
5404 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5405 return -EINVAL;
5406 sband = rdev->wiphy.bands[band];
5407 if (sband == NULL)
5408 return -EINVAL;
5409 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5410 nla_len(tx_rates), nl80211_txattr_policy);
5411 if (tb[NL80211_TXRATE_LEGACY]) {
5412 mask.control[band].legacy = rateset_to_mask(
5413 sband,
5414 nla_data(tb[NL80211_TXRATE_LEGACY]),
5415 nla_len(tb[NL80211_TXRATE_LEGACY]));
5416 if (mask.control[band].legacy == 0)
5417 return -EINVAL;
5418 }
5419 }
5420
5421 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5422 }
5423
5424 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5425 {
5426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5427 struct net_device *dev = info->user_ptr[1];
5428 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5429
5430 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5431 return -EINVAL;
5432
5433 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5434 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5435
5436 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5437 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5438 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5439 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5440 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5441 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5442 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5443 return -EOPNOTSUPP;
5444
5445 /* not much point in registering if we can't reply */
5446 if (!rdev->ops->mgmt_tx)
5447 return -EOPNOTSUPP;
5448
5449 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5450 frame_type,
5451 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5452 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5453 }
5454
5455 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5456 {
5457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5458 struct net_device *dev = info->user_ptr[1];
5459 struct ieee80211_channel *chan;
5460 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5461 bool channel_type_valid = false;
5462 u32 freq;
5463 int err;
5464 void *hdr = NULL;
5465 u64 cookie;
5466 struct sk_buff *msg = NULL;
5467 unsigned int wait = 0;
5468 bool offchan, no_cck, dont_wait_for_ack;
5469
5470 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5471
5472 if (!info->attrs[NL80211_ATTR_FRAME] ||
5473 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5474 return -EINVAL;
5475
5476 if (!rdev->ops->mgmt_tx)
5477 return -EOPNOTSUPP;
5478
5479 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5480 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5481 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5482 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5483 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5484 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5485 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5486 return -EOPNOTSUPP;
5487
5488 if (info->attrs[NL80211_ATTR_DURATION]) {
5489 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5490 return -EINVAL;
5491 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5492 }
5493
5494 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5495 channel_type = nla_get_u32(
5496 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5497 if (channel_type != NL80211_CHAN_NO_HT &&
5498 channel_type != NL80211_CHAN_HT20 &&
5499 channel_type != NL80211_CHAN_HT40PLUS &&
5500 channel_type != NL80211_CHAN_HT40MINUS)
5501 return -EINVAL;
5502 channel_type_valid = true;
5503 }
5504
5505 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5506
5507 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5508 return -EINVAL;
5509
5510 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5511
5512 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5513 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5514 if (chan == NULL)
5515 return -EINVAL;
5516
5517 if (!dont_wait_for_ack) {
5518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5519 if (!msg)
5520 return -ENOMEM;
5521
5522 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5523 NL80211_CMD_FRAME);
5524
5525 if (IS_ERR(hdr)) {
5526 err = PTR_ERR(hdr);
5527 goto free_msg;
5528 }
5529 }
5530
5531 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5532 channel_type_valid, wait,
5533 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5534 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5535 no_cck, dont_wait_for_ack, &cookie);
5536 if (err)
5537 goto free_msg;
5538
5539 if (msg) {
5540 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5541
5542 genlmsg_end(msg, hdr);
5543 return genlmsg_reply(msg, info);
5544 }
5545
5546 return 0;
5547
5548 nla_put_failure:
5549 err = -ENOBUFS;
5550 free_msg:
5551 nlmsg_free(msg);
5552 return err;
5553 }
5554
5555 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5556 {
5557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5558 struct net_device *dev = info->user_ptr[1];
5559 u64 cookie;
5560
5561 if (!info->attrs[NL80211_ATTR_COOKIE])
5562 return -EINVAL;
5563
5564 if (!rdev->ops->mgmt_tx_cancel_wait)
5565 return -EOPNOTSUPP;
5566
5567 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5568 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5569 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5570 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5572 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5573 return -EOPNOTSUPP;
5574
5575 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5576
5577 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5578 }
5579
5580 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5581 {
5582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5583 struct wireless_dev *wdev;
5584 struct net_device *dev = info->user_ptr[1];
5585 u8 ps_state;
5586 bool state;
5587 int err;
5588
5589 if (!info->attrs[NL80211_ATTR_PS_STATE])
5590 return -EINVAL;
5591
5592 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5593
5594 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5595 return -EINVAL;
5596
5597 wdev = dev->ieee80211_ptr;
5598
5599 if (!rdev->ops->set_power_mgmt)
5600 return -EOPNOTSUPP;
5601
5602 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5603
5604 if (state == wdev->ps)
5605 return 0;
5606
5607 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5608 wdev->ps_timeout);
5609 if (!err)
5610 wdev->ps = state;
5611 return err;
5612 }
5613
5614 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5615 {
5616 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5617 enum nl80211_ps_state ps_state;
5618 struct wireless_dev *wdev;
5619 struct net_device *dev = info->user_ptr[1];
5620 struct sk_buff *msg;
5621 void *hdr;
5622 int err;
5623
5624 wdev = dev->ieee80211_ptr;
5625
5626 if (!rdev->ops->set_power_mgmt)
5627 return -EOPNOTSUPP;
5628
5629 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5630 if (!msg)
5631 return -ENOMEM;
5632
5633 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5634 NL80211_CMD_GET_POWER_SAVE);
5635 if (!hdr) {
5636 err = -ENOBUFS;
5637 goto free_msg;
5638 }
5639
5640 if (wdev->ps)
5641 ps_state = NL80211_PS_ENABLED;
5642 else
5643 ps_state = NL80211_PS_DISABLED;
5644
5645 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5646
5647 genlmsg_end(msg, hdr);
5648 return genlmsg_reply(msg, info);
5649
5650 nla_put_failure:
5651 err = -ENOBUFS;
5652 free_msg:
5653 nlmsg_free(msg);
5654 return err;
5655 }
5656
5657 static struct nla_policy
5658 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5659 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5660 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5661 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5662 };
5663
5664 static int nl80211_set_cqm_rssi(struct genl_info *info,
5665 s32 threshold, u32 hysteresis)
5666 {
5667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5668 struct wireless_dev *wdev;
5669 struct net_device *dev = info->user_ptr[1];
5670
5671 if (threshold > 0)
5672 return -EINVAL;
5673
5674 wdev = dev->ieee80211_ptr;
5675
5676 if (!rdev->ops->set_cqm_rssi_config)
5677 return -EOPNOTSUPP;
5678
5679 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5680 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5681 return -EOPNOTSUPP;
5682
5683 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5684 threshold, hysteresis);
5685 }
5686
5687 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5688 {
5689 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5690 struct nlattr *cqm;
5691 int err;
5692
5693 cqm = info->attrs[NL80211_ATTR_CQM];
5694 if (!cqm) {
5695 err = -EINVAL;
5696 goto out;
5697 }
5698
5699 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5700 nl80211_attr_cqm_policy);
5701 if (err)
5702 goto out;
5703
5704 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5705 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5706 s32 threshold;
5707 u32 hysteresis;
5708 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5709 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5710 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5711 } else
5712 err = -EINVAL;
5713
5714 out:
5715 return err;
5716 }
5717
5718 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5719 {
5720 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5721 struct net_device *dev = info->user_ptr[1];
5722 struct mesh_config cfg;
5723 struct mesh_setup setup;
5724 int err;
5725
5726 /* start with default */
5727 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5728 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5729
5730 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5731 /* and parse parameters if given */
5732 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5733 if (err)
5734 return err;
5735 }
5736
5737 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5738 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5739 return -EINVAL;
5740
5741 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5742 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5743
5744 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5745 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
5746 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5747 return -EINVAL;
5748
5749 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5750 /* parse additional setup parameters if given */
5751 err = nl80211_parse_mesh_setup(info, &setup);
5752 if (err)
5753 return err;
5754 }
5755
5756 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5757 }
5758
5759 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5760 {
5761 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5762 struct net_device *dev = info->user_ptr[1];
5763
5764 return cfg80211_leave_mesh(rdev, dev);
5765 }
5766
5767 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5768 {
5769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5770 struct sk_buff *msg;
5771 void *hdr;
5772
5773 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5774 return -EOPNOTSUPP;
5775
5776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5777 if (!msg)
5778 return -ENOMEM;
5779
5780 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5781 NL80211_CMD_GET_WOWLAN);
5782 if (!hdr)
5783 goto nla_put_failure;
5784
5785 if (rdev->wowlan) {
5786 struct nlattr *nl_wowlan;
5787
5788 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5789 if (!nl_wowlan)
5790 goto nla_put_failure;
5791
5792 if (rdev->wowlan->any)
5793 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5794 if (rdev->wowlan->disconnect)
5795 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5796 if (rdev->wowlan->magic_pkt)
5797 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5798 if (rdev->wowlan->gtk_rekey_failure)
5799 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5800 if (rdev->wowlan->eap_identity_req)
5801 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5802 if (rdev->wowlan->four_way_handshake)
5803 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5804 if (rdev->wowlan->rfkill_release)
5805 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5806 if (rdev->wowlan->n_patterns) {
5807 struct nlattr *nl_pats, *nl_pat;
5808 int i, pat_len;
5809
5810 nl_pats = nla_nest_start(msg,
5811 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5812 if (!nl_pats)
5813 goto nla_put_failure;
5814
5815 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5816 nl_pat = nla_nest_start(msg, i + 1);
5817 if (!nl_pat)
5818 goto nla_put_failure;
5819 pat_len = rdev->wowlan->patterns[i].pattern_len;
5820 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5821 DIV_ROUND_UP(pat_len, 8),
5822 rdev->wowlan->patterns[i].mask);
5823 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5824 pat_len,
5825 rdev->wowlan->patterns[i].pattern);
5826 nla_nest_end(msg, nl_pat);
5827 }
5828 nla_nest_end(msg, nl_pats);
5829 }
5830
5831 nla_nest_end(msg, nl_wowlan);
5832 }
5833
5834 genlmsg_end(msg, hdr);
5835 return genlmsg_reply(msg, info);
5836
5837 nla_put_failure:
5838 nlmsg_free(msg);
5839 return -ENOBUFS;
5840 }
5841
5842 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5843 {
5844 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5845 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5846 struct cfg80211_wowlan no_triggers = {};
5847 struct cfg80211_wowlan new_triggers = {};
5848 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5849 int err, i;
5850
5851 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5852 return -EOPNOTSUPP;
5853
5854 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5855 goto no_triggers;
5856
5857 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5858 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5859 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5860 nl80211_wowlan_policy);
5861 if (err)
5862 return err;
5863
5864 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5865 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5866 return -EINVAL;
5867 new_triggers.any = true;
5868 }
5869
5870 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5871 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5872 return -EINVAL;
5873 new_triggers.disconnect = true;
5874 }
5875
5876 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5877 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5878 return -EINVAL;
5879 new_triggers.magic_pkt = true;
5880 }
5881
5882 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5883 return -EINVAL;
5884
5885 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5886 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5887 return -EINVAL;
5888 new_triggers.gtk_rekey_failure = true;
5889 }
5890
5891 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5892 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5893 return -EINVAL;
5894 new_triggers.eap_identity_req = true;
5895 }
5896
5897 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5898 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5899 return -EINVAL;
5900 new_triggers.four_way_handshake = true;
5901 }
5902
5903 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5904 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5905 return -EINVAL;
5906 new_triggers.rfkill_release = true;
5907 }
5908
5909 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5910 struct nlattr *pat;
5911 int n_patterns = 0;
5912 int rem, pat_len, mask_len;
5913 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5914
5915 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5916 rem)
5917 n_patterns++;
5918 if (n_patterns > wowlan->n_patterns)
5919 return -EINVAL;
5920
5921 new_triggers.patterns = kcalloc(n_patterns,
5922 sizeof(new_triggers.patterns[0]),
5923 GFP_KERNEL);
5924 if (!new_triggers.patterns)
5925 return -ENOMEM;
5926
5927 new_triggers.n_patterns = n_patterns;
5928 i = 0;
5929
5930 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5931 rem) {
5932 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5933 nla_data(pat), nla_len(pat), NULL);
5934 err = -EINVAL;
5935 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5936 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5937 goto error;
5938 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5939 mask_len = DIV_ROUND_UP(pat_len, 8);
5940 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5941 mask_len)
5942 goto error;
5943 if (pat_len > wowlan->pattern_max_len ||
5944 pat_len < wowlan->pattern_min_len)
5945 goto error;
5946
5947 new_triggers.patterns[i].mask =
5948 kmalloc(mask_len + pat_len, GFP_KERNEL);
5949 if (!new_triggers.patterns[i].mask) {
5950 err = -ENOMEM;
5951 goto error;
5952 }
5953 new_triggers.patterns[i].pattern =
5954 new_triggers.patterns[i].mask + mask_len;
5955 memcpy(new_triggers.patterns[i].mask,
5956 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5957 mask_len);
5958 new_triggers.patterns[i].pattern_len = pat_len;
5959 memcpy(new_triggers.patterns[i].pattern,
5960 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5961 pat_len);
5962 i++;
5963 }
5964 }
5965
5966 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5967 struct cfg80211_wowlan *ntrig;
5968 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5969 GFP_KERNEL);
5970 if (!ntrig) {
5971 err = -ENOMEM;
5972 goto error;
5973 }
5974 cfg80211_rdev_free_wowlan(rdev);
5975 rdev->wowlan = ntrig;
5976 } else {
5977 no_triggers:
5978 cfg80211_rdev_free_wowlan(rdev);
5979 rdev->wowlan = NULL;
5980 }
5981
5982 return 0;
5983 error:
5984 for (i = 0; i < new_triggers.n_patterns; i++)
5985 kfree(new_triggers.patterns[i].mask);
5986 kfree(new_triggers.patterns);
5987 return err;
5988 }
5989
5990 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5991 {
5992 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5993 struct net_device *dev = info->user_ptr[1];
5994 struct wireless_dev *wdev = dev->ieee80211_ptr;
5995 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5996 struct cfg80211_gtk_rekey_data rekey_data;
5997 int err;
5998
5999 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6000 return -EINVAL;
6001
6002 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6003 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6004 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6005 nl80211_rekey_policy);
6006 if (err)
6007 return err;
6008
6009 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6010 return -ERANGE;
6011 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6012 return -ERANGE;
6013 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6014 return -ERANGE;
6015
6016 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6017 NL80211_KEK_LEN);
6018 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6019 NL80211_KCK_LEN);
6020 memcpy(rekey_data.replay_ctr,
6021 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6022 NL80211_REPLAY_CTR_LEN);
6023
6024 wdev_lock(wdev);
6025 if (!wdev->current_bss) {
6026 err = -ENOTCONN;
6027 goto out;
6028 }
6029
6030 if (!rdev->ops->set_rekey_data) {
6031 err = -EOPNOTSUPP;
6032 goto out;
6033 }
6034
6035 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6036 out:
6037 wdev_unlock(wdev);
6038 return err;
6039 }
6040
6041 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6042 struct genl_info *info)
6043 {
6044 struct net_device *dev = info->user_ptr[1];
6045 struct wireless_dev *wdev = dev->ieee80211_ptr;
6046
6047 if (wdev->iftype != NL80211_IFTYPE_AP &&
6048 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6049 return -EINVAL;
6050
6051 if (wdev->ap_unexpected_nlpid)
6052 return -EBUSY;
6053
6054 wdev->ap_unexpected_nlpid = info->snd_pid;
6055 return 0;
6056 }
6057
6058 static int nl80211_probe_client(struct sk_buff *skb,
6059 struct genl_info *info)
6060 {
6061 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6062 struct net_device *dev = info->user_ptr[1];
6063 struct wireless_dev *wdev = dev->ieee80211_ptr;
6064 struct sk_buff *msg;
6065 void *hdr;
6066 const u8 *addr;
6067 u64 cookie;
6068 int err;
6069
6070 if (wdev->iftype != NL80211_IFTYPE_AP &&
6071 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6072 return -EOPNOTSUPP;
6073
6074 if (!info->attrs[NL80211_ATTR_MAC])
6075 return -EINVAL;
6076
6077 if (!rdev->ops->probe_client)
6078 return -EOPNOTSUPP;
6079
6080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6081 if (!msg)
6082 return -ENOMEM;
6083
6084 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6085 NL80211_CMD_PROBE_CLIENT);
6086
6087 if (IS_ERR(hdr)) {
6088 err = PTR_ERR(hdr);
6089 goto free_msg;
6090 }
6091
6092 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6093
6094 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6095 if (err)
6096 goto free_msg;
6097
6098 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6099
6100 genlmsg_end(msg, hdr);
6101
6102 return genlmsg_reply(msg, info);
6103
6104 nla_put_failure:
6105 err = -ENOBUFS;
6106 free_msg:
6107 nlmsg_free(msg);
6108 return err;
6109 }
6110
6111 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6112 {
6113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6114
6115 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6116 return -EOPNOTSUPP;
6117
6118 if (rdev->ap_beacons_nlpid)
6119 return -EBUSY;
6120
6121 rdev->ap_beacons_nlpid = info->snd_pid;
6122
6123 return 0;
6124 }
6125
6126 #define NL80211_FLAG_NEED_WIPHY 0x01
6127 #define NL80211_FLAG_NEED_NETDEV 0x02
6128 #define NL80211_FLAG_NEED_RTNL 0x04
6129 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6130 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6131 NL80211_FLAG_CHECK_NETDEV_UP)
6132
6133 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6134 struct genl_info *info)
6135 {
6136 struct cfg80211_registered_device *rdev;
6137 struct net_device *dev;
6138 int err;
6139 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6140
6141 if (rtnl)
6142 rtnl_lock();
6143
6144 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6145 rdev = cfg80211_get_dev_from_info(info);
6146 if (IS_ERR(rdev)) {
6147 if (rtnl)
6148 rtnl_unlock();
6149 return PTR_ERR(rdev);
6150 }
6151 info->user_ptr[0] = rdev;
6152 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6153 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6154 &rdev, &dev);
6155 if (err) {
6156 if (rtnl)
6157 rtnl_unlock();
6158 return err;
6159 }
6160 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6161 !netif_running(dev)) {
6162 cfg80211_unlock_rdev(rdev);
6163 dev_put(dev);
6164 if (rtnl)
6165 rtnl_unlock();
6166 return -ENETDOWN;
6167 }
6168 info->user_ptr[0] = rdev;
6169 info->user_ptr[1] = dev;
6170 }
6171
6172 return 0;
6173 }
6174
6175 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6176 struct genl_info *info)
6177 {
6178 if (info->user_ptr[0])
6179 cfg80211_unlock_rdev(info->user_ptr[0]);
6180 if (info->user_ptr[1])
6181 dev_put(info->user_ptr[1]);
6182 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6183 rtnl_unlock();
6184 }
6185
6186 static struct genl_ops nl80211_ops[] = {
6187 {
6188 .cmd = NL80211_CMD_GET_WIPHY,
6189 .doit = nl80211_get_wiphy,
6190 .dumpit = nl80211_dump_wiphy,
6191 .policy = nl80211_policy,
6192 /* can be retrieved by unprivileged users */
6193 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6194 },
6195 {
6196 .cmd = NL80211_CMD_SET_WIPHY,
6197 .doit = nl80211_set_wiphy,
6198 .policy = nl80211_policy,
6199 .flags = GENL_ADMIN_PERM,
6200 .internal_flags = NL80211_FLAG_NEED_RTNL,
6201 },
6202 {
6203 .cmd = NL80211_CMD_GET_INTERFACE,
6204 .doit = nl80211_get_interface,
6205 .dumpit = nl80211_dump_interface,
6206 .policy = nl80211_policy,
6207 /* can be retrieved by unprivileged users */
6208 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6209 },
6210 {
6211 .cmd = NL80211_CMD_SET_INTERFACE,
6212 .doit = nl80211_set_interface,
6213 .policy = nl80211_policy,
6214 .flags = GENL_ADMIN_PERM,
6215 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6216 NL80211_FLAG_NEED_RTNL,
6217 },
6218 {
6219 .cmd = NL80211_CMD_NEW_INTERFACE,
6220 .doit = nl80211_new_interface,
6221 .policy = nl80211_policy,
6222 .flags = GENL_ADMIN_PERM,
6223 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6224 NL80211_FLAG_NEED_RTNL,
6225 },
6226 {
6227 .cmd = NL80211_CMD_DEL_INTERFACE,
6228 .doit = nl80211_del_interface,
6229 .policy = nl80211_policy,
6230 .flags = GENL_ADMIN_PERM,
6231 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6232 NL80211_FLAG_NEED_RTNL,
6233 },
6234 {
6235 .cmd = NL80211_CMD_GET_KEY,
6236 .doit = nl80211_get_key,
6237 .policy = nl80211_policy,
6238 .flags = GENL_ADMIN_PERM,
6239 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6240 NL80211_FLAG_NEED_RTNL,
6241 },
6242 {
6243 .cmd = NL80211_CMD_SET_KEY,
6244 .doit = nl80211_set_key,
6245 .policy = nl80211_policy,
6246 .flags = GENL_ADMIN_PERM,
6247 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6248 NL80211_FLAG_NEED_RTNL,
6249 },
6250 {
6251 .cmd = NL80211_CMD_NEW_KEY,
6252 .doit = nl80211_new_key,
6253 .policy = nl80211_policy,
6254 .flags = GENL_ADMIN_PERM,
6255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6256 NL80211_FLAG_NEED_RTNL,
6257 },
6258 {
6259 .cmd = NL80211_CMD_DEL_KEY,
6260 .doit = nl80211_del_key,
6261 .policy = nl80211_policy,
6262 .flags = GENL_ADMIN_PERM,
6263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6264 NL80211_FLAG_NEED_RTNL,
6265 },
6266 {
6267 .cmd = NL80211_CMD_SET_BEACON,
6268 .policy = nl80211_policy,
6269 .flags = GENL_ADMIN_PERM,
6270 .doit = nl80211_addset_beacon,
6271 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6272 NL80211_FLAG_NEED_RTNL,
6273 },
6274 {
6275 .cmd = NL80211_CMD_NEW_BEACON,
6276 .policy = nl80211_policy,
6277 .flags = GENL_ADMIN_PERM,
6278 .doit = nl80211_addset_beacon,
6279 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6280 NL80211_FLAG_NEED_RTNL,
6281 },
6282 {
6283 .cmd = NL80211_CMD_DEL_BEACON,
6284 .policy = nl80211_policy,
6285 .flags = GENL_ADMIN_PERM,
6286 .doit = nl80211_del_beacon,
6287 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6288 NL80211_FLAG_NEED_RTNL,
6289 },
6290 {
6291 .cmd = NL80211_CMD_GET_STATION,
6292 .doit = nl80211_get_station,
6293 .dumpit = nl80211_dump_station,
6294 .policy = nl80211_policy,
6295 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6296 NL80211_FLAG_NEED_RTNL,
6297 },
6298 {
6299 .cmd = NL80211_CMD_SET_STATION,
6300 .doit = nl80211_set_station,
6301 .policy = nl80211_policy,
6302 .flags = GENL_ADMIN_PERM,
6303 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6304 NL80211_FLAG_NEED_RTNL,
6305 },
6306 {
6307 .cmd = NL80211_CMD_NEW_STATION,
6308 .doit = nl80211_new_station,
6309 .policy = nl80211_policy,
6310 .flags = GENL_ADMIN_PERM,
6311 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6312 NL80211_FLAG_NEED_RTNL,
6313 },
6314 {
6315 .cmd = NL80211_CMD_DEL_STATION,
6316 .doit = nl80211_del_station,
6317 .policy = nl80211_policy,
6318 .flags = GENL_ADMIN_PERM,
6319 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6320 NL80211_FLAG_NEED_RTNL,
6321 },
6322 {
6323 .cmd = NL80211_CMD_GET_MPATH,
6324 .doit = nl80211_get_mpath,
6325 .dumpit = nl80211_dump_mpath,
6326 .policy = nl80211_policy,
6327 .flags = GENL_ADMIN_PERM,
6328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6329 NL80211_FLAG_NEED_RTNL,
6330 },
6331 {
6332 .cmd = NL80211_CMD_SET_MPATH,
6333 .doit = nl80211_set_mpath,
6334 .policy = nl80211_policy,
6335 .flags = GENL_ADMIN_PERM,
6336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6337 NL80211_FLAG_NEED_RTNL,
6338 },
6339 {
6340 .cmd = NL80211_CMD_NEW_MPATH,
6341 .doit = nl80211_new_mpath,
6342 .policy = nl80211_policy,
6343 .flags = GENL_ADMIN_PERM,
6344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6345 NL80211_FLAG_NEED_RTNL,
6346 },
6347 {
6348 .cmd = NL80211_CMD_DEL_MPATH,
6349 .doit = nl80211_del_mpath,
6350 .policy = nl80211_policy,
6351 .flags = GENL_ADMIN_PERM,
6352 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6353 NL80211_FLAG_NEED_RTNL,
6354 },
6355 {
6356 .cmd = NL80211_CMD_SET_BSS,
6357 .doit = nl80211_set_bss,
6358 .policy = nl80211_policy,
6359 .flags = GENL_ADMIN_PERM,
6360 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6361 NL80211_FLAG_NEED_RTNL,
6362 },
6363 {
6364 .cmd = NL80211_CMD_GET_REG,
6365 .doit = nl80211_get_reg,
6366 .policy = nl80211_policy,
6367 /* can be retrieved by unprivileged users */
6368 },
6369 {
6370 .cmd = NL80211_CMD_SET_REG,
6371 .doit = nl80211_set_reg,
6372 .policy = nl80211_policy,
6373 .flags = GENL_ADMIN_PERM,
6374 },
6375 {
6376 .cmd = NL80211_CMD_REQ_SET_REG,
6377 .doit = nl80211_req_set_reg,
6378 .policy = nl80211_policy,
6379 .flags = GENL_ADMIN_PERM,
6380 },
6381 {
6382 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6383 .doit = nl80211_get_mesh_config,
6384 .policy = nl80211_policy,
6385 /* can be retrieved by unprivileged users */
6386 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6387 NL80211_FLAG_NEED_RTNL,
6388 },
6389 {
6390 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6391 .doit = nl80211_update_mesh_config,
6392 .policy = nl80211_policy,
6393 .flags = GENL_ADMIN_PERM,
6394 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6395 NL80211_FLAG_NEED_RTNL,
6396 },
6397 {
6398 .cmd = NL80211_CMD_TRIGGER_SCAN,
6399 .doit = nl80211_trigger_scan,
6400 .policy = nl80211_policy,
6401 .flags = GENL_ADMIN_PERM,
6402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6403 NL80211_FLAG_NEED_RTNL,
6404 },
6405 {
6406 .cmd = NL80211_CMD_GET_SCAN,
6407 .policy = nl80211_policy,
6408 .dumpit = nl80211_dump_scan,
6409 },
6410 {
6411 .cmd = NL80211_CMD_START_SCHED_SCAN,
6412 .doit = nl80211_start_sched_scan,
6413 .policy = nl80211_policy,
6414 .flags = GENL_ADMIN_PERM,
6415 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6416 NL80211_FLAG_NEED_RTNL,
6417 },
6418 {
6419 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6420 .doit = nl80211_stop_sched_scan,
6421 .policy = nl80211_policy,
6422 .flags = GENL_ADMIN_PERM,
6423 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6424 NL80211_FLAG_NEED_RTNL,
6425 },
6426 {
6427 .cmd = NL80211_CMD_AUTHENTICATE,
6428 .doit = nl80211_authenticate,
6429 .policy = nl80211_policy,
6430 .flags = GENL_ADMIN_PERM,
6431 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6432 NL80211_FLAG_NEED_RTNL,
6433 },
6434 {
6435 .cmd = NL80211_CMD_ASSOCIATE,
6436 .doit = nl80211_associate,
6437 .policy = nl80211_policy,
6438 .flags = GENL_ADMIN_PERM,
6439 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6440 NL80211_FLAG_NEED_RTNL,
6441 },
6442 {
6443 .cmd = NL80211_CMD_DEAUTHENTICATE,
6444 .doit = nl80211_deauthenticate,
6445 .policy = nl80211_policy,
6446 .flags = GENL_ADMIN_PERM,
6447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6448 NL80211_FLAG_NEED_RTNL,
6449 },
6450 {
6451 .cmd = NL80211_CMD_DISASSOCIATE,
6452 .doit = nl80211_disassociate,
6453 .policy = nl80211_policy,
6454 .flags = GENL_ADMIN_PERM,
6455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6456 NL80211_FLAG_NEED_RTNL,
6457 },
6458 {
6459 .cmd = NL80211_CMD_JOIN_IBSS,
6460 .doit = nl80211_join_ibss,
6461 .policy = nl80211_policy,
6462 .flags = GENL_ADMIN_PERM,
6463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6464 NL80211_FLAG_NEED_RTNL,
6465 },
6466 {
6467 .cmd = NL80211_CMD_LEAVE_IBSS,
6468 .doit = nl80211_leave_ibss,
6469 .policy = nl80211_policy,
6470 .flags = GENL_ADMIN_PERM,
6471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6472 NL80211_FLAG_NEED_RTNL,
6473 },
6474 #ifdef CONFIG_NL80211_TESTMODE
6475 {
6476 .cmd = NL80211_CMD_TESTMODE,
6477 .doit = nl80211_testmode_do,
6478 .dumpit = nl80211_testmode_dump,
6479 .policy = nl80211_policy,
6480 .flags = GENL_ADMIN_PERM,
6481 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6482 NL80211_FLAG_NEED_RTNL,
6483 },
6484 #endif
6485 {
6486 .cmd = NL80211_CMD_CONNECT,
6487 .doit = nl80211_connect,
6488 .policy = nl80211_policy,
6489 .flags = GENL_ADMIN_PERM,
6490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6491 NL80211_FLAG_NEED_RTNL,
6492 },
6493 {
6494 .cmd = NL80211_CMD_DISCONNECT,
6495 .doit = nl80211_disconnect,
6496 .policy = nl80211_policy,
6497 .flags = GENL_ADMIN_PERM,
6498 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6499 NL80211_FLAG_NEED_RTNL,
6500 },
6501 {
6502 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6503 .doit = nl80211_wiphy_netns,
6504 .policy = nl80211_policy,
6505 .flags = GENL_ADMIN_PERM,
6506 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6507 NL80211_FLAG_NEED_RTNL,
6508 },
6509 {
6510 .cmd = NL80211_CMD_GET_SURVEY,
6511 .policy = nl80211_policy,
6512 .dumpit = nl80211_dump_survey,
6513 },
6514 {
6515 .cmd = NL80211_CMD_SET_PMKSA,
6516 .doit = nl80211_setdel_pmksa,
6517 .policy = nl80211_policy,
6518 .flags = GENL_ADMIN_PERM,
6519 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6520 NL80211_FLAG_NEED_RTNL,
6521 },
6522 {
6523 .cmd = NL80211_CMD_DEL_PMKSA,
6524 .doit = nl80211_setdel_pmksa,
6525 .policy = nl80211_policy,
6526 .flags = GENL_ADMIN_PERM,
6527 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6528 NL80211_FLAG_NEED_RTNL,
6529 },
6530 {
6531 .cmd = NL80211_CMD_FLUSH_PMKSA,
6532 .doit = nl80211_flush_pmksa,
6533 .policy = nl80211_policy,
6534 .flags = GENL_ADMIN_PERM,
6535 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6536 NL80211_FLAG_NEED_RTNL,
6537 },
6538 {
6539 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6540 .doit = nl80211_remain_on_channel,
6541 .policy = nl80211_policy,
6542 .flags = GENL_ADMIN_PERM,
6543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6544 NL80211_FLAG_NEED_RTNL,
6545 },
6546 {
6547 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6548 .doit = nl80211_cancel_remain_on_channel,
6549 .policy = nl80211_policy,
6550 .flags = GENL_ADMIN_PERM,
6551 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6552 NL80211_FLAG_NEED_RTNL,
6553 },
6554 {
6555 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6556 .doit = nl80211_set_tx_bitrate_mask,
6557 .policy = nl80211_policy,
6558 .flags = GENL_ADMIN_PERM,
6559 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6560 NL80211_FLAG_NEED_RTNL,
6561 },
6562 {
6563 .cmd = NL80211_CMD_REGISTER_FRAME,
6564 .doit = nl80211_register_mgmt,
6565 .policy = nl80211_policy,
6566 .flags = GENL_ADMIN_PERM,
6567 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6568 NL80211_FLAG_NEED_RTNL,
6569 },
6570 {
6571 .cmd = NL80211_CMD_FRAME,
6572 .doit = nl80211_tx_mgmt,
6573 .policy = nl80211_policy,
6574 .flags = GENL_ADMIN_PERM,
6575 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6576 NL80211_FLAG_NEED_RTNL,
6577 },
6578 {
6579 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6580 .doit = nl80211_tx_mgmt_cancel_wait,
6581 .policy = nl80211_policy,
6582 .flags = GENL_ADMIN_PERM,
6583 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6584 NL80211_FLAG_NEED_RTNL,
6585 },
6586 {
6587 .cmd = NL80211_CMD_SET_POWER_SAVE,
6588 .doit = nl80211_set_power_save,
6589 .policy = nl80211_policy,
6590 .flags = GENL_ADMIN_PERM,
6591 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6592 NL80211_FLAG_NEED_RTNL,
6593 },
6594 {
6595 .cmd = NL80211_CMD_GET_POWER_SAVE,
6596 .doit = nl80211_get_power_save,
6597 .policy = nl80211_policy,
6598 /* can be retrieved by unprivileged users */
6599 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6600 NL80211_FLAG_NEED_RTNL,
6601 },
6602 {
6603 .cmd = NL80211_CMD_SET_CQM,
6604 .doit = nl80211_set_cqm,
6605 .policy = nl80211_policy,
6606 .flags = GENL_ADMIN_PERM,
6607 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6608 NL80211_FLAG_NEED_RTNL,
6609 },
6610 {
6611 .cmd = NL80211_CMD_SET_CHANNEL,
6612 .doit = nl80211_set_channel,
6613 .policy = nl80211_policy,
6614 .flags = GENL_ADMIN_PERM,
6615 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6616 NL80211_FLAG_NEED_RTNL,
6617 },
6618 {
6619 .cmd = NL80211_CMD_SET_WDS_PEER,
6620 .doit = nl80211_set_wds_peer,
6621 .policy = nl80211_policy,
6622 .flags = GENL_ADMIN_PERM,
6623 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6624 NL80211_FLAG_NEED_RTNL,
6625 },
6626 {
6627 .cmd = NL80211_CMD_JOIN_MESH,
6628 .doit = nl80211_join_mesh,
6629 .policy = nl80211_policy,
6630 .flags = GENL_ADMIN_PERM,
6631 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6632 NL80211_FLAG_NEED_RTNL,
6633 },
6634 {
6635 .cmd = NL80211_CMD_LEAVE_MESH,
6636 .doit = nl80211_leave_mesh,
6637 .policy = nl80211_policy,
6638 .flags = GENL_ADMIN_PERM,
6639 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6640 NL80211_FLAG_NEED_RTNL,
6641 },
6642 {
6643 .cmd = NL80211_CMD_GET_WOWLAN,
6644 .doit = nl80211_get_wowlan,
6645 .policy = nl80211_policy,
6646 /* can be retrieved by unprivileged users */
6647 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6648 NL80211_FLAG_NEED_RTNL,
6649 },
6650 {
6651 .cmd = NL80211_CMD_SET_WOWLAN,
6652 .doit = nl80211_set_wowlan,
6653 .policy = nl80211_policy,
6654 .flags = GENL_ADMIN_PERM,
6655 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6656 NL80211_FLAG_NEED_RTNL,
6657 },
6658 {
6659 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6660 .doit = nl80211_set_rekey_data,
6661 .policy = nl80211_policy,
6662 .flags = GENL_ADMIN_PERM,
6663 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6664 NL80211_FLAG_NEED_RTNL,
6665 },
6666 {
6667 .cmd = NL80211_CMD_TDLS_MGMT,
6668 .doit = nl80211_tdls_mgmt,
6669 .policy = nl80211_policy,
6670 .flags = GENL_ADMIN_PERM,
6671 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6672 NL80211_FLAG_NEED_RTNL,
6673 },
6674 {
6675 .cmd = NL80211_CMD_TDLS_OPER,
6676 .doit = nl80211_tdls_oper,
6677 .policy = nl80211_policy,
6678 .flags = GENL_ADMIN_PERM,
6679 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6680 NL80211_FLAG_NEED_RTNL,
6681 },
6682 {
6683 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
6684 .doit = nl80211_register_unexpected_frame,
6685 .policy = nl80211_policy,
6686 .flags = GENL_ADMIN_PERM,
6687 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6688 NL80211_FLAG_NEED_RTNL,
6689 },
6690 {
6691 .cmd = NL80211_CMD_PROBE_CLIENT,
6692 .doit = nl80211_probe_client,
6693 .policy = nl80211_policy,
6694 .flags = GENL_ADMIN_PERM,
6695 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6696 NL80211_FLAG_NEED_RTNL,
6697 },
6698 {
6699 .cmd = NL80211_CMD_REGISTER_BEACONS,
6700 .doit = nl80211_register_beacons,
6701 .policy = nl80211_policy,
6702 .flags = GENL_ADMIN_PERM,
6703 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6704 NL80211_FLAG_NEED_RTNL,
6705 },
6706 {
6707 .cmd = NL80211_CMD_SET_NOACK_MAP,
6708 .doit = nl80211_set_noack_map,
6709 .policy = nl80211_policy,
6710 .flags = GENL_ADMIN_PERM,
6711 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6712 NL80211_FLAG_NEED_RTNL,
6713 },
6714
6715 };
6716
6717 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6718 .name = "mlme",
6719 };
6720
6721 /* multicast groups */
6722 static struct genl_multicast_group nl80211_config_mcgrp = {
6723 .name = "config",
6724 };
6725 static struct genl_multicast_group nl80211_scan_mcgrp = {
6726 .name = "scan",
6727 };
6728 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6729 .name = "regulatory",
6730 };
6731
6732 /* notification functions */
6733
6734 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6735 {
6736 struct sk_buff *msg;
6737
6738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6739 if (!msg)
6740 return;
6741
6742 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6743 nlmsg_free(msg);
6744 return;
6745 }
6746
6747 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6748 nl80211_config_mcgrp.id, GFP_KERNEL);
6749 }
6750
6751 static int nl80211_add_scan_req(struct sk_buff *msg,
6752 struct cfg80211_registered_device *rdev)
6753 {
6754 struct cfg80211_scan_request *req = rdev->scan_req;
6755 struct nlattr *nest;
6756 int i;
6757
6758 ASSERT_RDEV_LOCK(rdev);
6759
6760 if (WARN_ON(!req))
6761 return 0;
6762
6763 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6764 if (!nest)
6765 goto nla_put_failure;
6766 for (i = 0; i < req->n_ssids; i++)
6767 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6768 nla_nest_end(msg, nest);
6769
6770 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6771 if (!nest)
6772 goto nla_put_failure;
6773 for (i = 0; i < req->n_channels; i++)
6774 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6775 nla_nest_end(msg, nest);
6776
6777 if (req->ie)
6778 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6779
6780 return 0;
6781 nla_put_failure:
6782 return -ENOBUFS;
6783 }
6784
6785 static int nl80211_send_scan_msg(struct sk_buff *msg,
6786 struct cfg80211_registered_device *rdev,
6787 struct net_device *netdev,
6788 u32 pid, u32 seq, int flags,
6789 u32 cmd)
6790 {
6791 void *hdr;
6792
6793 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6794 if (!hdr)
6795 return -1;
6796
6797 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6798 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6799
6800 /* ignore errors and send incomplete event anyway */
6801 nl80211_add_scan_req(msg, rdev);
6802
6803 return genlmsg_end(msg, hdr);
6804
6805 nla_put_failure:
6806 genlmsg_cancel(msg, hdr);
6807 return -EMSGSIZE;
6808 }
6809
6810 static int
6811 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6812 struct cfg80211_registered_device *rdev,
6813 struct net_device *netdev,
6814 u32 pid, u32 seq, int flags, u32 cmd)
6815 {
6816 void *hdr;
6817
6818 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6819 if (!hdr)
6820 return -1;
6821
6822 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6824
6825 return genlmsg_end(msg, hdr);
6826
6827 nla_put_failure:
6828 genlmsg_cancel(msg, hdr);
6829 return -EMSGSIZE;
6830 }
6831
6832 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6833 struct net_device *netdev)
6834 {
6835 struct sk_buff *msg;
6836
6837 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6838 if (!msg)
6839 return;
6840
6841 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6842 NL80211_CMD_TRIGGER_SCAN) < 0) {
6843 nlmsg_free(msg);
6844 return;
6845 }
6846
6847 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6848 nl80211_scan_mcgrp.id, GFP_KERNEL);
6849 }
6850
6851 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6852 struct net_device *netdev)
6853 {
6854 struct sk_buff *msg;
6855
6856 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6857 if (!msg)
6858 return;
6859
6860 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6861 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6862 nlmsg_free(msg);
6863 return;
6864 }
6865
6866 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6867 nl80211_scan_mcgrp.id, GFP_KERNEL);
6868 }
6869
6870 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6871 struct net_device *netdev)
6872 {
6873 struct sk_buff *msg;
6874
6875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6876 if (!msg)
6877 return;
6878
6879 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6880 NL80211_CMD_SCAN_ABORTED) < 0) {
6881 nlmsg_free(msg);
6882 return;
6883 }
6884
6885 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6886 nl80211_scan_mcgrp.id, GFP_KERNEL);
6887 }
6888
6889 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6890 struct net_device *netdev)
6891 {
6892 struct sk_buff *msg;
6893
6894 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6895 if (!msg)
6896 return;
6897
6898 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6899 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6900 nlmsg_free(msg);
6901 return;
6902 }
6903
6904 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6905 nl80211_scan_mcgrp.id, GFP_KERNEL);
6906 }
6907
6908 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6909 struct net_device *netdev, u32 cmd)
6910 {
6911 struct sk_buff *msg;
6912
6913 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6914 if (!msg)
6915 return;
6916
6917 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6918 nlmsg_free(msg);
6919 return;
6920 }
6921
6922 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6923 nl80211_scan_mcgrp.id, GFP_KERNEL);
6924 }
6925
6926 /*
6927 * This can happen on global regulatory changes or device specific settings
6928 * based on custom world regulatory domains.
6929 */
6930 void nl80211_send_reg_change_event(struct regulatory_request *request)
6931 {
6932 struct sk_buff *msg;
6933 void *hdr;
6934
6935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6936 if (!msg)
6937 return;
6938
6939 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6940 if (!hdr) {
6941 nlmsg_free(msg);
6942 return;
6943 }
6944
6945 /* Userspace can always count this one always being set */
6946 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6947
6948 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6949 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6950 NL80211_REGDOM_TYPE_WORLD);
6951 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6952 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6953 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6954 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6955 request->intersect)
6956 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6957 NL80211_REGDOM_TYPE_INTERSECTION);
6958 else {
6959 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6960 NL80211_REGDOM_TYPE_COUNTRY);
6961 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6962 }
6963
6964 if (wiphy_idx_valid(request->wiphy_idx))
6965 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6966
6967 genlmsg_end(msg, hdr);
6968
6969 rcu_read_lock();
6970 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6971 GFP_ATOMIC);
6972 rcu_read_unlock();
6973
6974 return;
6975
6976 nla_put_failure:
6977 genlmsg_cancel(msg, hdr);
6978 nlmsg_free(msg);
6979 }
6980
6981 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6982 struct net_device *netdev,
6983 const u8 *buf, size_t len,
6984 enum nl80211_commands cmd, gfp_t gfp)
6985 {
6986 struct sk_buff *msg;
6987 void *hdr;
6988
6989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6990 if (!msg)
6991 return;
6992
6993 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6994 if (!hdr) {
6995 nlmsg_free(msg);
6996 return;
6997 }
6998
6999 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7000 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7001 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7002
7003 genlmsg_end(msg, hdr);
7004
7005 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7006 nl80211_mlme_mcgrp.id, gfp);
7007 return;
7008
7009 nla_put_failure:
7010 genlmsg_cancel(msg, hdr);
7011 nlmsg_free(msg);
7012 }
7013
7014 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7015 struct net_device *netdev, const u8 *buf,
7016 size_t len, gfp_t gfp)
7017 {
7018 nl80211_send_mlme_event(rdev, netdev, buf, len,
7019 NL80211_CMD_AUTHENTICATE, gfp);
7020 }
7021
7022 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7023 struct net_device *netdev, const u8 *buf,
7024 size_t len, gfp_t gfp)
7025 {
7026 nl80211_send_mlme_event(rdev, netdev, buf, len,
7027 NL80211_CMD_ASSOCIATE, gfp);
7028 }
7029
7030 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7031 struct net_device *netdev, const u8 *buf,
7032 size_t len, gfp_t gfp)
7033 {
7034 nl80211_send_mlme_event(rdev, netdev, buf, len,
7035 NL80211_CMD_DEAUTHENTICATE, gfp);
7036 }
7037
7038 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7039 struct net_device *netdev, const u8 *buf,
7040 size_t len, gfp_t gfp)
7041 {
7042 nl80211_send_mlme_event(rdev, netdev, buf, len,
7043 NL80211_CMD_DISASSOCIATE, gfp);
7044 }
7045
7046 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7047 struct net_device *netdev, const u8 *buf,
7048 size_t len, gfp_t gfp)
7049 {
7050 nl80211_send_mlme_event(rdev, netdev, buf, len,
7051 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7052 }
7053
7054 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7055 struct net_device *netdev, const u8 *buf,
7056 size_t len, gfp_t gfp)
7057 {
7058 nl80211_send_mlme_event(rdev, netdev, buf, len,
7059 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7060 }
7061
7062 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7063 struct net_device *netdev, int cmd,
7064 const u8 *addr, gfp_t gfp)
7065 {
7066 struct sk_buff *msg;
7067 void *hdr;
7068
7069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7070 if (!msg)
7071 return;
7072
7073 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7074 if (!hdr) {
7075 nlmsg_free(msg);
7076 return;
7077 }
7078
7079 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7080 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7081 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
7082 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7083
7084 genlmsg_end(msg, hdr);
7085
7086 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7087 nl80211_mlme_mcgrp.id, gfp);
7088 return;
7089
7090 nla_put_failure:
7091 genlmsg_cancel(msg, hdr);
7092 nlmsg_free(msg);
7093 }
7094
7095 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7096 struct net_device *netdev, const u8 *addr,
7097 gfp_t gfp)
7098 {
7099 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7100 addr, gfp);
7101 }
7102
7103 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7104 struct net_device *netdev, const u8 *addr,
7105 gfp_t gfp)
7106 {
7107 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7108 addr, gfp);
7109 }
7110
7111 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7112 struct net_device *netdev, const u8 *bssid,
7113 const u8 *req_ie, size_t req_ie_len,
7114 const u8 *resp_ie, size_t resp_ie_len,
7115 u16 status, gfp_t gfp)
7116 {
7117 struct sk_buff *msg;
7118 void *hdr;
7119
7120 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7121 if (!msg)
7122 return;
7123
7124 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7125 if (!hdr) {
7126 nlmsg_free(msg);
7127 return;
7128 }
7129
7130 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7131 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7132 if (bssid)
7133 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7134 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
7135 if (req_ie)
7136 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7137 if (resp_ie)
7138 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7139
7140 genlmsg_end(msg, hdr);
7141
7142 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7143 nl80211_mlme_mcgrp.id, gfp);
7144 return;
7145
7146 nla_put_failure:
7147 genlmsg_cancel(msg, hdr);
7148 nlmsg_free(msg);
7149
7150 }
7151
7152 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7153 struct net_device *netdev, const u8 *bssid,
7154 const u8 *req_ie, size_t req_ie_len,
7155 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7156 {
7157 struct sk_buff *msg;
7158 void *hdr;
7159
7160 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7161 if (!msg)
7162 return;
7163
7164 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7165 if (!hdr) {
7166 nlmsg_free(msg);
7167 return;
7168 }
7169
7170 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7171 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7172 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7173 if (req_ie)
7174 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7175 if (resp_ie)
7176 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7177
7178 genlmsg_end(msg, hdr);
7179
7180 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7181 nl80211_mlme_mcgrp.id, gfp);
7182 return;
7183
7184 nla_put_failure:
7185 genlmsg_cancel(msg, hdr);
7186 nlmsg_free(msg);
7187
7188 }
7189
7190 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7191 struct net_device *netdev, u16 reason,
7192 const u8 *ie, size_t ie_len, bool from_ap)
7193 {
7194 struct sk_buff *msg;
7195 void *hdr;
7196
7197 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7198 if (!msg)
7199 return;
7200
7201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7202 if (!hdr) {
7203 nlmsg_free(msg);
7204 return;
7205 }
7206
7207 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7208 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7209 if (from_ap && reason)
7210 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
7211 if (from_ap)
7212 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
7213 if (ie)
7214 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
7215
7216 genlmsg_end(msg, hdr);
7217
7218 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7219 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7220 return;
7221
7222 nla_put_failure:
7223 genlmsg_cancel(msg, hdr);
7224 nlmsg_free(msg);
7225
7226 }
7227
7228 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7229 struct net_device *netdev, const u8 *bssid,
7230 gfp_t gfp)
7231 {
7232 struct sk_buff *msg;
7233 void *hdr;
7234
7235 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7236 if (!msg)
7237 return;
7238
7239 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7240 if (!hdr) {
7241 nlmsg_free(msg);
7242 return;
7243 }
7244
7245 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7246 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7247 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7248
7249 genlmsg_end(msg, hdr);
7250
7251 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7252 nl80211_mlme_mcgrp.id, gfp);
7253 return;
7254
7255 nla_put_failure:
7256 genlmsg_cancel(msg, hdr);
7257 nlmsg_free(msg);
7258 }
7259
7260 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7261 struct net_device *netdev,
7262 const u8 *macaddr, const u8* ie, u8 ie_len,
7263 gfp_t gfp)
7264 {
7265 struct sk_buff *msg;
7266 void *hdr;
7267
7268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7269 if (!msg)
7270 return;
7271
7272 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7273 if (!hdr) {
7274 nlmsg_free(msg);
7275 return;
7276 }
7277
7278 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7279 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7280 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
7281 if (ie_len && ie)
7282 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
7283
7284 genlmsg_end(msg, hdr);
7285
7286 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7287 nl80211_mlme_mcgrp.id, gfp);
7288 return;
7289
7290 nla_put_failure:
7291 genlmsg_cancel(msg, hdr);
7292 nlmsg_free(msg);
7293 }
7294
7295 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7296 struct net_device *netdev, const u8 *addr,
7297 enum nl80211_key_type key_type, int key_id,
7298 const u8 *tsc, gfp_t gfp)
7299 {
7300 struct sk_buff *msg;
7301 void *hdr;
7302
7303 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7304 if (!msg)
7305 return;
7306
7307 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7308 if (!hdr) {
7309 nlmsg_free(msg);
7310 return;
7311 }
7312
7313 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7314 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7315 if (addr)
7316 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7317 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7318 if (key_id != -1)
7319 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7320 if (tsc)
7321 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7322
7323 genlmsg_end(msg, hdr);
7324
7325 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7326 nl80211_mlme_mcgrp.id, gfp);
7327 return;
7328
7329 nla_put_failure:
7330 genlmsg_cancel(msg, hdr);
7331 nlmsg_free(msg);
7332 }
7333
7334 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7335 struct ieee80211_channel *channel_before,
7336 struct ieee80211_channel *channel_after)
7337 {
7338 struct sk_buff *msg;
7339 void *hdr;
7340 struct nlattr *nl_freq;
7341
7342 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7343 if (!msg)
7344 return;
7345
7346 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7347 if (!hdr) {
7348 nlmsg_free(msg);
7349 return;
7350 }
7351
7352 /*
7353 * Since we are applying the beacon hint to a wiphy we know its
7354 * wiphy_idx is valid
7355 */
7356 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7357
7358 /* Before */
7359 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7360 if (!nl_freq)
7361 goto nla_put_failure;
7362 if (nl80211_msg_put_channel(msg, channel_before))
7363 goto nla_put_failure;
7364 nla_nest_end(msg, nl_freq);
7365
7366 /* After */
7367 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7368 if (!nl_freq)
7369 goto nla_put_failure;
7370 if (nl80211_msg_put_channel(msg, channel_after))
7371 goto nla_put_failure;
7372 nla_nest_end(msg, nl_freq);
7373
7374 genlmsg_end(msg, hdr);
7375
7376 rcu_read_lock();
7377 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7378 GFP_ATOMIC);
7379 rcu_read_unlock();
7380
7381 return;
7382
7383 nla_put_failure:
7384 genlmsg_cancel(msg, hdr);
7385 nlmsg_free(msg);
7386 }
7387
7388 static void nl80211_send_remain_on_chan_event(
7389 int cmd, struct cfg80211_registered_device *rdev,
7390 struct net_device *netdev, u64 cookie,
7391 struct ieee80211_channel *chan,
7392 enum nl80211_channel_type channel_type,
7393 unsigned int duration, gfp_t gfp)
7394 {
7395 struct sk_buff *msg;
7396 void *hdr;
7397
7398 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7399 if (!msg)
7400 return;
7401
7402 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7403 if (!hdr) {
7404 nlmsg_free(msg);
7405 return;
7406 }
7407
7408 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7409 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7410 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7411 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7412 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7413
7414 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7415 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7416
7417 genlmsg_end(msg, hdr);
7418
7419 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7420 nl80211_mlme_mcgrp.id, gfp);
7421 return;
7422
7423 nla_put_failure:
7424 genlmsg_cancel(msg, hdr);
7425 nlmsg_free(msg);
7426 }
7427
7428 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7429 struct net_device *netdev, u64 cookie,
7430 struct ieee80211_channel *chan,
7431 enum nl80211_channel_type channel_type,
7432 unsigned int duration, gfp_t gfp)
7433 {
7434 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7435 rdev, netdev, cookie, chan,
7436 channel_type, duration, gfp);
7437 }
7438
7439 void nl80211_send_remain_on_channel_cancel(
7440 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7441 u64 cookie, struct ieee80211_channel *chan,
7442 enum nl80211_channel_type channel_type, gfp_t gfp)
7443 {
7444 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7445 rdev, netdev, cookie, chan,
7446 channel_type, 0, gfp);
7447 }
7448
7449 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7450 struct net_device *dev, const u8 *mac_addr,
7451 struct station_info *sinfo, gfp_t gfp)
7452 {
7453 struct sk_buff *msg;
7454
7455 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7456 if (!msg)
7457 return;
7458
7459 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7460 nlmsg_free(msg);
7461 return;
7462 }
7463
7464 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7465 nl80211_mlme_mcgrp.id, gfp);
7466 }
7467
7468 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7469 struct net_device *dev, const u8 *mac_addr,
7470 gfp_t gfp)
7471 {
7472 struct sk_buff *msg;
7473 void *hdr;
7474
7475 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7476 if (!msg)
7477 return;
7478
7479 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7480 if (!hdr) {
7481 nlmsg_free(msg);
7482 return;
7483 }
7484
7485 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7486 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7487
7488 genlmsg_end(msg, hdr);
7489
7490 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7491 nl80211_mlme_mcgrp.id, gfp);
7492 return;
7493
7494 nla_put_failure:
7495 genlmsg_cancel(msg, hdr);
7496 nlmsg_free(msg);
7497 }
7498
7499 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
7500 const u8 *addr, gfp_t gfp)
7501 {
7502 struct wireless_dev *wdev = dev->ieee80211_ptr;
7503 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7504 struct sk_buff *msg;
7505 void *hdr;
7506 int err;
7507 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
7508
7509 if (!nlpid)
7510 return false;
7511
7512 msg = nlmsg_new(100, gfp);
7513 if (!msg)
7514 return true;
7515
7516 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7517 if (!hdr) {
7518 nlmsg_free(msg);
7519 return true;
7520 }
7521
7522 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7523 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7524 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7525
7526 err = genlmsg_end(msg, hdr);
7527 if (err < 0) {
7528 nlmsg_free(msg);
7529 return true;
7530 }
7531
7532 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7533 return true;
7534
7535 nla_put_failure:
7536 genlmsg_cancel(msg, hdr);
7537 nlmsg_free(msg);
7538 return true;
7539 }
7540
7541 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
7542 {
7543 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
7544 addr, gfp);
7545 }
7546
7547 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
7548 const u8 *addr, gfp_t gfp)
7549 {
7550 return __nl80211_unexpected_frame(dev,
7551 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
7552 addr, gfp);
7553 }
7554
7555 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7556 struct net_device *netdev, u32 nlpid,
7557 int freq, const u8 *buf, size_t len, gfp_t gfp)
7558 {
7559 struct sk_buff *msg;
7560 void *hdr;
7561
7562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7563 if (!msg)
7564 return -ENOMEM;
7565
7566 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7567 if (!hdr) {
7568 nlmsg_free(msg);
7569 return -ENOMEM;
7570 }
7571
7572 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7573 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7574 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7575 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7576
7577 genlmsg_end(msg, hdr);
7578
7579 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7580
7581 nla_put_failure:
7582 genlmsg_cancel(msg, hdr);
7583 nlmsg_free(msg);
7584 return -ENOBUFS;
7585 }
7586
7587 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7588 struct net_device *netdev, u64 cookie,
7589 const u8 *buf, size_t len, bool ack,
7590 gfp_t gfp)
7591 {
7592 struct sk_buff *msg;
7593 void *hdr;
7594
7595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7596 if (!msg)
7597 return;
7598
7599 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7600 if (!hdr) {
7601 nlmsg_free(msg);
7602 return;
7603 }
7604
7605 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7606 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7607 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7608 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7609 if (ack)
7610 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7611
7612 genlmsg_end(msg, hdr);
7613
7614 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7615 return;
7616
7617 nla_put_failure:
7618 genlmsg_cancel(msg, hdr);
7619 nlmsg_free(msg);
7620 }
7621
7622 void
7623 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7624 struct net_device *netdev,
7625 enum nl80211_cqm_rssi_threshold_event rssi_event,
7626 gfp_t gfp)
7627 {
7628 struct sk_buff *msg;
7629 struct nlattr *pinfoattr;
7630 void *hdr;
7631
7632 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7633 if (!msg)
7634 return;
7635
7636 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7637 if (!hdr) {
7638 nlmsg_free(msg);
7639 return;
7640 }
7641
7642 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7643 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7644
7645 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7646 if (!pinfoattr)
7647 goto nla_put_failure;
7648
7649 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7650 rssi_event);
7651
7652 nla_nest_end(msg, pinfoattr);
7653
7654 genlmsg_end(msg, hdr);
7655
7656 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7657 nl80211_mlme_mcgrp.id, gfp);
7658 return;
7659
7660 nla_put_failure:
7661 genlmsg_cancel(msg, hdr);
7662 nlmsg_free(msg);
7663 }
7664
7665 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7666 struct net_device *netdev, const u8 *bssid,
7667 const u8 *replay_ctr, gfp_t gfp)
7668 {
7669 struct sk_buff *msg;
7670 struct nlattr *rekey_attr;
7671 void *hdr;
7672
7673 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7674 if (!msg)
7675 return;
7676
7677 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7678 if (!hdr) {
7679 nlmsg_free(msg);
7680 return;
7681 }
7682
7683 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7684 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7685 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7686
7687 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7688 if (!rekey_attr)
7689 goto nla_put_failure;
7690
7691 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7692 NL80211_REPLAY_CTR_LEN, replay_ctr);
7693
7694 nla_nest_end(msg, rekey_attr);
7695
7696 genlmsg_end(msg, hdr);
7697
7698 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7699 nl80211_mlme_mcgrp.id, gfp);
7700 return;
7701
7702 nla_put_failure:
7703 genlmsg_cancel(msg, hdr);
7704 nlmsg_free(msg);
7705 }
7706
7707 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7708 struct net_device *netdev, int index,
7709 const u8 *bssid, bool preauth, gfp_t gfp)
7710 {
7711 struct sk_buff *msg;
7712 struct nlattr *attr;
7713 void *hdr;
7714
7715 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7716 if (!msg)
7717 return;
7718
7719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7720 if (!hdr) {
7721 nlmsg_free(msg);
7722 return;
7723 }
7724
7725 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7726 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7727
7728 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7729 if (!attr)
7730 goto nla_put_failure;
7731
7732 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7733 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7734 if (preauth)
7735 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7736
7737 nla_nest_end(msg, attr);
7738
7739 genlmsg_end(msg, hdr);
7740
7741 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7742 nl80211_mlme_mcgrp.id, gfp);
7743 return;
7744
7745 nla_put_failure:
7746 genlmsg_cancel(msg, hdr);
7747 nlmsg_free(msg);
7748 }
7749
7750 void
7751 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7752 struct net_device *netdev, const u8 *peer,
7753 u32 num_packets, gfp_t gfp)
7754 {
7755 struct sk_buff *msg;
7756 struct nlattr *pinfoattr;
7757 void *hdr;
7758
7759 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7760 if (!msg)
7761 return;
7762
7763 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7764 if (!hdr) {
7765 nlmsg_free(msg);
7766 return;
7767 }
7768
7769 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7770 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7771 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7772
7773 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7774 if (!pinfoattr)
7775 goto nla_put_failure;
7776
7777 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7778
7779 nla_nest_end(msg, pinfoattr);
7780
7781 genlmsg_end(msg, hdr);
7782
7783 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7784 nl80211_mlme_mcgrp.id, gfp);
7785 return;
7786
7787 nla_put_failure:
7788 genlmsg_cancel(msg, hdr);
7789 nlmsg_free(msg);
7790 }
7791
7792 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
7793 u64 cookie, bool acked, gfp_t gfp)
7794 {
7795 struct wireless_dev *wdev = dev->ieee80211_ptr;
7796 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7797 struct sk_buff *msg;
7798 void *hdr;
7799 int err;
7800
7801 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7802 if (!msg)
7803 return;
7804
7805 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
7806 if (!hdr) {
7807 nlmsg_free(msg);
7808 return;
7809 }
7810
7811 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7812 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7813 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7814 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7815 if (acked)
7816 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7817
7818 err = genlmsg_end(msg, hdr);
7819 if (err < 0) {
7820 nlmsg_free(msg);
7821 return;
7822 }
7823
7824 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7825 nl80211_mlme_mcgrp.id, gfp);
7826 return;
7827
7828 nla_put_failure:
7829 genlmsg_cancel(msg, hdr);
7830 nlmsg_free(msg);
7831 }
7832 EXPORT_SYMBOL(cfg80211_probe_status);
7833
7834 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
7835 const u8 *frame, size_t len,
7836 int freq, gfp_t gfp)
7837 {
7838 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
7839 struct sk_buff *msg;
7840 void *hdr;
7841 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
7842
7843 if (!nlpid)
7844 return;
7845
7846 msg = nlmsg_new(len + 100, gfp);
7847 if (!msg)
7848 return;
7849
7850 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7851 if (!hdr) {
7852 nlmsg_free(msg);
7853 return;
7854 }
7855
7856 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7857 if (freq)
7858 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7859 NLA_PUT(msg, NL80211_ATTR_FRAME, len, frame);
7860
7861 genlmsg_end(msg, hdr);
7862
7863 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7864 return;
7865
7866 nla_put_failure:
7867 genlmsg_cancel(msg, hdr);
7868 nlmsg_free(msg);
7869 }
7870 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
7871
7872 static int nl80211_netlink_notify(struct notifier_block * nb,
7873 unsigned long state,
7874 void *_notify)
7875 {
7876 struct netlink_notify *notify = _notify;
7877 struct cfg80211_registered_device *rdev;
7878 struct wireless_dev *wdev;
7879
7880 if (state != NETLINK_URELEASE)
7881 return NOTIFY_DONE;
7882
7883 rcu_read_lock();
7884
7885 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
7886 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7887 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7888 if (rdev->ap_beacons_nlpid == notify->pid)
7889 rdev->ap_beacons_nlpid = 0;
7890 }
7891
7892 rcu_read_unlock();
7893
7894 return NOTIFY_DONE;
7895 }
7896
7897 static struct notifier_block nl80211_netlink_notifier = {
7898 .notifier_call = nl80211_netlink_notify,
7899 };
7900
7901 /* initialisation/exit functions */
7902
7903 int nl80211_init(void)
7904 {
7905 int err;
7906
7907 err = genl_register_family_with_ops(&nl80211_fam,
7908 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7909 if (err)
7910 return err;
7911
7912 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7913 if (err)
7914 goto err_out;
7915
7916 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7917 if (err)
7918 goto err_out;
7919
7920 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7921 if (err)
7922 goto err_out;
7923
7924 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7925 if (err)
7926 goto err_out;
7927
7928 #ifdef CONFIG_NL80211_TESTMODE
7929 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7930 if (err)
7931 goto err_out;
7932 #endif
7933
7934 err = netlink_register_notifier(&nl80211_netlink_notifier);
7935 if (err)
7936 goto err_out;
7937
7938 return 0;
7939 err_out:
7940 genl_unregister_family(&nl80211_fam);
7941 return err;
7942 }
7943
7944 void nl80211_exit(void)
7945 {
7946 netlink_unregister_notifier(&nl80211_netlink_notifier);
7947 genl_unregister_family(&nl80211_fam);
7948 }
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