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fs/Makefile: Stupid typo breakage of exofs inclusion
[linux-btrfs-devel.git] / net / wireless / nl80211.c
blob48260c2d092a820873f10769b9100a7864e8d2e0
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
136 .len = NL80211_HT_CAPABILITY_LEN },
137
138 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
139 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
140 .len = IEEE80211_MAX_DATA_LEN },
141 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
142 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
143
144 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
145 .len = IEEE80211_MAX_SSID_LEN },
146 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
147 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
148 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
149 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
150 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
151 [NL80211_ATTR_STA_FLAGS2] = {
152 .len = sizeof(struct nl80211_sta_flag_update),
153 },
154 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
156 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
157 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
158 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
159 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
160 [NL80211_ATTR_PID] = { .type = NLA_U32 },
161 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
162 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
163 .len = WLAN_PMKID_LEN },
164 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
165 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
166 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
167 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
168 .len = IEEE80211_MAX_DATA_LEN },
169 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
170 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
171 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
172 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
173 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
174 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
175 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
176 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
177 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
178 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
179 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
180 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
181 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
182 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
183 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
184 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
185 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
186 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
187 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
188 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
191 .len = IEEE80211_MAX_DATA_LEN },
192 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
193 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
194 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
195 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
196 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
197 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
198 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
199 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
200 };
201
202 /* policy for the key attributes */
203 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
204 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
205 [NL80211_KEY_IDX] = { .type = NLA_U8 },
206 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
207 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
208 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
209 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
210 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
211 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
212 };
213
214 /* policy for the key default flags */
215 static const struct nla_policy
216 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
217 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
218 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
219 };
220
221 /* policy for WoWLAN attributes */
222 static const struct nla_policy
223 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
224 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
225 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
226 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
227 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
228 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
229 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
230 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
231 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
232 };
233
234 /* policy for GTK rekey offload attributes */
235 static const struct nla_policy
236 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
237 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
238 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
239 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
240 };
241
242 static const struct nla_policy
243 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
244 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
245 .len = IEEE80211_MAX_SSID_LEN },
246 };
247
248 /* ifidx get helper */
249 static int nl80211_get_ifidx(struct netlink_callback *cb)
250 {
251 int res;
252
253 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
254 nl80211_fam.attrbuf, nl80211_fam.maxattr,
255 nl80211_policy);
256 if (res)
257 return res;
258
259 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
260 return -EINVAL;
261
262 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
263 if (!res)
264 return -EINVAL;
265 return res;
266 }
267
268 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
269 struct netlink_callback *cb,
270 struct cfg80211_registered_device **rdev,
271 struct net_device **dev)
272 {
273 int ifidx = cb->args[0];
274 int err;
275
276 if (!ifidx)
277 ifidx = nl80211_get_ifidx(cb);
278 if (ifidx < 0)
279 return ifidx;
280
281 cb->args[0] = ifidx;
282
283 rtnl_lock();
284
285 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
286 if (!*dev) {
287 err = -ENODEV;
288 goto out_rtnl;
289 }
290
291 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
292 if (IS_ERR(*rdev)) {
293 err = PTR_ERR(*rdev);
294 goto out_rtnl;
295 }
296
297 return 0;
298 out_rtnl:
299 rtnl_unlock();
300 return err;
301 }
302
303 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
304 {
305 cfg80211_unlock_rdev(rdev);
306 rtnl_unlock();
307 }
308
309 /* IE validation */
310 static bool is_valid_ie_attr(const struct nlattr *attr)
311 {
312 const u8 *pos;
313 int len;
314
315 if (!attr)
316 return true;
317
318 pos = nla_data(attr);
319 len = nla_len(attr);
320
321 while (len) {
322 u8 elemlen;
323
324 if (len < 2)
325 return false;
326 len -= 2;
327
328 elemlen = pos[1];
329 if (elemlen > len)
330 return false;
331
332 len -= elemlen;
333 pos += 2 + elemlen;
334 }
335
336 return true;
337 }
338
339 /* message building helper */
340 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
341 int flags, u8 cmd)
342 {
343 /* since there is no private header just add the generic one */
344 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
345 }
346
347 static int nl80211_msg_put_channel(struct sk_buff *msg,
348 struct ieee80211_channel *chan)
349 {
350 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
351 chan->center_freq);
352
353 if (chan->flags & IEEE80211_CHAN_DISABLED)
354 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
355 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
356 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
357 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
358 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
359 if (chan->flags & IEEE80211_CHAN_RADAR)
360 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
361
362 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
363 DBM_TO_MBM(chan->max_power));
364
365 return 0;
366
367 nla_put_failure:
368 return -ENOBUFS;
369 }
370
371 /* netlink command implementations */
372
373 struct key_parse {
374 struct key_params p;
375 int idx;
376 int type;
377 bool def, defmgmt;
378 bool def_uni, def_multi;
379 };
380
381 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
382 {
383 struct nlattr *tb[NL80211_KEY_MAX + 1];
384 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
385 nl80211_key_policy);
386 if (err)
387 return err;
388
389 k->def = !!tb[NL80211_KEY_DEFAULT];
390 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
391
392 if (k->def) {
393 k->def_uni = true;
394 k->def_multi = true;
395 }
396 if (k->defmgmt)
397 k->def_multi = true;
398
399 if (tb[NL80211_KEY_IDX])
400 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
401
402 if (tb[NL80211_KEY_DATA]) {
403 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
404 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
405 }
406
407 if (tb[NL80211_KEY_SEQ]) {
408 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
409 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
410 }
411
412 if (tb[NL80211_KEY_CIPHER])
413 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
414
415 if (tb[NL80211_KEY_TYPE]) {
416 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
417 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
418 return -EINVAL;
419 }
420
421 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
422 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
423 int err = nla_parse_nested(kdt,
424 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
425 tb[NL80211_KEY_DEFAULT_TYPES],
426 nl80211_key_default_policy);
427 if (err)
428 return err;
429
430 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
431 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
432 }
433
434 return 0;
435 }
436
437 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
438 {
439 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
440 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
441 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
442 }
443
444 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
445 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
446 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
447 }
448
449 if (info->attrs[NL80211_ATTR_KEY_IDX])
450 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
451
452 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
453 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
454
455 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
456 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
457
458 if (k->def) {
459 k->def_uni = true;
460 k->def_multi = true;
461 }
462 if (k->defmgmt)
463 k->def_multi = true;
464
465 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
466 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
467 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
468 return -EINVAL;
469 }
470
471 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
472 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
473 int err = nla_parse_nested(
474 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
475 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
476 nl80211_key_default_policy);
477 if (err)
478 return err;
479
480 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
481 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
482 }
483
484 return 0;
485 }
486
487 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
488 {
489 int err;
490
491 memset(k, 0, sizeof(*k));
492 k->idx = -1;
493 k->type = -1;
494
495 if (info->attrs[NL80211_ATTR_KEY])
496 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
497 else
498 err = nl80211_parse_key_old(info, k);
499
500 if (err)
501 return err;
502
503 if (k->def && k->defmgmt)
504 return -EINVAL;
505
506 if (k->defmgmt) {
507 if (k->def_uni || !k->def_multi)
508 return -EINVAL;
509 }
510
511 if (k->idx != -1) {
512 if (k->defmgmt) {
513 if (k->idx < 4 || k->idx > 5)
514 return -EINVAL;
515 } else if (k->def) {
516 if (k->idx < 0 || k->idx > 3)
517 return -EINVAL;
518 } else {
519 if (k->idx < 0 || k->idx > 5)
520 return -EINVAL;
521 }
522 }
523
524 return 0;
525 }
526
527 static struct cfg80211_cached_keys *
528 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
529 struct nlattr *keys)
530 {
531 struct key_parse parse;
532 struct nlattr *key;
533 struct cfg80211_cached_keys *result;
534 int rem, err, def = 0;
535
536 result = kzalloc(sizeof(*result), GFP_KERNEL);
537 if (!result)
538 return ERR_PTR(-ENOMEM);
539
540 result->def = -1;
541 result->defmgmt = -1;
542
543 nla_for_each_nested(key, keys, rem) {
544 memset(&parse, 0, sizeof(parse));
545 parse.idx = -1;
546
547 err = nl80211_parse_key_new(key, &parse);
548 if (err)
549 goto error;
550 err = -EINVAL;
551 if (!parse.p.key)
552 goto error;
553 if (parse.idx < 0 || parse.idx > 4)
554 goto error;
555 if (parse.def) {
556 if (def)
557 goto error;
558 def = 1;
559 result->def = parse.idx;
560 if (!parse.def_uni || !parse.def_multi)
561 goto error;
562 } else if (parse.defmgmt)
563 goto error;
564 err = cfg80211_validate_key_settings(rdev, &parse.p,
565 parse.idx, false, NULL);
566 if (err)
567 goto error;
568 result->params[parse.idx].cipher = parse.p.cipher;
569 result->params[parse.idx].key_len = parse.p.key_len;
570 result->params[parse.idx].key = result->data[parse.idx];
571 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
572 }
573
574 return result;
575 error:
576 kfree(result);
577 return ERR_PTR(err);
578 }
579
580 static int nl80211_key_allowed(struct wireless_dev *wdev)
581 {
582 ASSERT_WDEV_LOCK(wdev);
583
584 switch (wdev->iftype) {
585 case NL80211_IFTYPE_AP:
586 case NL80211_IFTYPE_AP_VLAN:
587 case NL80211_IFTYPE_P2P_GO:
588 case NL80211_IFTYPE_MESH_POINT:
589 break;
590 case NL80211_IFTYPE_ADHOC:
591 if (!wdev->current_bss)
592 return -ENOLINK;
593 break;
594 case NL80211_IFTYPE_STATION:
595 case NL80211_IFTYPE_P2P_CLIENT:
596 if (wdev->sme_state != CFG80211_SME_CONNECTED)
597 return -ENOLINK;
598 break;
599 default:
600 return -EINVAL;
601 }
602
603 return 0;
604 }
605
606 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
607 {
608 struct nlattr *nl_modes = nla_nest_start(msg, attr);
609 int i;
610
611 if (!nl_modes)
612 goto nla_put_failure;
613
614 i = 0;
615 while (ifmodes) {
616 if (ifmodes & 1)
617 NLA_PUT_FLAG(msg, i);
618 ifmodes >>= 1;
619 i++;
620 }
621
622 nla_nest_end(msg, nl_modes);
623 return 0;
624
625 nla_put_failure:
626 return -ENOBUFS;
627 }
628
629 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
630 struct sk_buff *msg)
631 {
632 struct nlattr *nl_combis;
633 int i, j;
634
635 nl_combis = nla_nest_start(msg,
636 NL80211_ATTR_INTERFACE_COMBINATIONS);
637 if (!nl_combis)
638 goto nla_put_failure;
639
640 for (i = 0; i < wiphy->n_iface_combinations; i++) {
641 const struct ieee80211_iface_combination *c;
642 struct nlattr *nl_combi, *nl_limits;
643
644 c = &wiphy->iface_combinations[i];
645
646 nl_combi = nla_nest_start(msg, i + 1);
647 if (!nl_combi)
648 goto nla_put_failure;
649
650 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
651 if (!nl_limits)
652 goto nla_put_failure;
653
654 for (j = 0; j < c->n_limits; j++) {
655 struct nlattr *nl_limit;
656
657 nl_limit = nla_nest_start(msg, j + 1);
658 if (!nl_limit)
659 goto nla_put_failure;
660 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
661 c->limits[j].max);
662 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
663 c->limits[j].types))
664 goto nla_put_failure;
665 nla_nest_end(msg, nl_limit);
666 }
667
668 nla_nest_end(msg, nl_limits);
669
670 if (c->beacon_int_infra_match)
671 NLA_PUT_FLAG(msg,
672 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
673 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
674 c->num_different_channels);
675 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
676 c->max_interfaces);
677
678 nla_nest_end(msg, nl_combi);
679 }
680
681 nla_nest_end(msg, nl_combis);
682
683 return 0;
684 nla_put_failure:
685 return -ENOBUFS;
686 }
687
688 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
689 struct cfg80211_registered_device *dev)
690 {
691 void *hdr;
692 struct nlattr *nl_bands, *nl_band;
693 struct nlattr *nl_freqs, *nl_freq;
694 struct nlattr *nl_rates, *nl_rate;
695 struct nlattr *nl_cmds;
696 enum ieee80211_band band;
697 struct ieee80211_channel *chan;
698 struct ieee80211_rate *rate;
699 int i;
700 const struct ieee80211_txrx_stypes *mgmt_stypes =
701 dev->wiphy.mgmt_stypes;
702
703 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
704 if (!hdr)
705 return -1;
706
707 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
708 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
709
710 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
711 cfg80211_rdev_list_generation);
712
713 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
714 dev->wiphy.retry_short);
715 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
716 dev->wiphy.retry_long);
717 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
718 dev->wiphy.frag_threshold);
719 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
720 dev->wiphy.rts_threshold);
721 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
722 dev->wiphy.coverage_class);
723 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
724 dev->wiphy.max_scan_ssids);
725 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
726 dev->wiphy.max_sched_scan_ssids);
727 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
728 dev->wiphy.max_scan_ie_len);
729 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
730 dev->wiphy.max_sched_scan_ie_len);
731 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
732 dev->wiphy.max_match_sets);
733
734 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
735 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
736 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
737 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
738 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
739 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
740 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
741 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
742 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
743 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
744 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
745 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
746
747 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
748 sizeof(u32) * dev->wiphy.n_cipher_suites,
749 dev->wiphy.cipher_suites);
750
751 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
752 dev->wiphy.max_num_pmkids);
753
754 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
755 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
756
757 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
758 dev->wiphy.available_antennas_tx);
759 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
760 dev->wiphy.available_antennas_rx);
761
762 if ((dev->wiphy.available_antennas_tx ||
763 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
764 u32 tx_ant = 0, rx_ant = 0;
765 int res;
766 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
767 if (!res) {
768 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
769 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
770 }
771 }
772
773 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
774 dev->wiphy.interface_modes))
775 goto nla_put_failure;
776
777 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
778 if (!nl_bands)
779 goto nla_put_failure;
780
781 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
782 if (!dev->wiphy.bands[band])
783 continue;
784
785 nl_band = nla_nest_start(msg, band);
786 if (!nl_band)
787 goto nla_put_failure;
788
789 /* add HT info */
790 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
791 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
792 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
793 &dev->wiphy.bands[band]->ht_cap.mcs);
794 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
795 dev->wiphy.bands[band]->ht_cap.cap);
796 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
797 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
798 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
799 dev->wiphy.bands[band]->ht_cap.ampdu_density);
800 }
801
802 /* add frequencies */
803 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
804 if (!nl_freqs)
805 goto nla_put_failure;
806
807 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
808 nl_freq = nla_nest_start(msg, i);
809 if (!nl_freq)
810 goto nla_put_failure;
811
812 chan = &dev->wiphy.bands[band]->channels[i];
813
814 if (nl80211_msg_put_channel(msg, chan))
815 goto nla_put_failure;
816
817 nla_nest_end(msg, nl_freq);
818 }
819
820 nla_nest_end(msg, nl_freqs);
821
822 /* add bitrates */
823 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
824 if (!nl_rates)
825 goto nla_put_failure;
826
827 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
828 nl_rate = nla_nest_start(msg, i);
829 if (!nl_rate)
830 goto nla_put_failure;
831
832 rate = &dev->wiphy.bands[band]->bitrates[i];
833 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
834 rate->bitrate);
835 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
836 NLA_PUT_FLAG(msg,
837 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
838
839 nla_nest_end(msg, nl_rate);
840 }
841
842 nla_nest_end(msg, nl_rates);
843
844 nla_nest_end(msg, nl_band);
845 }
846 nla_nest_end(msg, nl_bands);
847
848 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
849 if (!nl_cmds)
850 goto nla_put_failure;
851
852 i = 0;
853 #define CMD(op, n) \
854 do { \
855 if (dev->ops->op) { \
856 i++; \
857 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
858 } \
859 } while (0)
860
861 CMD(add_virtual_intf, NEW_INTERFACE);
862 CMD(change_virtual_intf, SET_INTERFACE);
863 CMD(add_key, NEW_KEY);
864 CMD(add_beacon, NEW_BEACON);
865 CMD(add_station, NEW_STATION);
866 CMD(add_mpath, NEW_MPATH);
867 CMD(update_mesh_config, SET_MESH_CONFIG);
868 CMD(change_bss, SET_BSS);
869 CMD(auth, AUTHENTICATE);
870 CMD(assoc, ASSOCIATE);
871 CMD(deauth, DEAUTHENTICATE);
872 CMD(disassoc, DISASSOCIATE);
873 CMD(join_ibss, JOIN_IBSS);
874 CMD(join_mesh, JOIN_MESH);
875 CMD(set_pmksa, SET_PMKSA);
876 CMD(del_pmksa, DEL_PMKSA);
877 CMD(flush_pmksa, FLUSH_PMKSA);
878 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
879 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
880 CMD(mgmt_tx, FRAME);
881 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
882 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
883 i++;
884 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
885 }
886 CMD(set_channel, SET_CHANNEL);
887 CMD(set_wds_peer, SET_WDS_PEER);
888 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
889 CMD(tdls_mgmt, TDLS_MGMT);
890 CMD(tdls_oper, TDLS_OPER);
891 }
892 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
893 CMD(sched_scan_start, START_SCHED_SCAN);
894
895 #undef CMD
896
897 if (dev->ops->connect || dev->ops->auth) {
898 i++;
899 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
900 }
901
902 if (dev->ops->disconnect || dev->ops->deauth) {
903 i++;
904 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
905 }
906
907 nla_nest_end(msg, nl_cmds);
908
909 if (dev->ops->remain_on_channel)
910 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
911 dev->wiphy.max_remain_on_channel_duration);
912
913 if (dev->ops->mgmt_tx_cancel_wait)
914 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
915
916 if (mgmt_stypes) {
917 u16 stypes;
918 struct nlattr *nl_ftypes, *nl_ifs;
919 enum nl80211_iftype ift;
920
921 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
922 if (!nl_ifs)
923 goto nla_put_failure;
924
925 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
926 nl_ftypes = nla_nest_start(msg, ift);
927 if (!nl_ftypes)
928 goto nla_put_failure;
929 i = 0;
930 stypes = mgmt_stypes[ift].tx;
931 while (stypes) {
932 if (stypes & 1)
933 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
934 (i << 4) | IEEE80211_FTYPE_MGMT);
935 stypes >>= 1;
936 i++;
937 }
938 nla_nest_end(msg, nl_ftypes);
939 }
940
941 nla_nest_end(msg, nl_ifs);
942
943 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
944 if (!nl_ifs)
945 goto nla_put_failure;
946
947 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
948 nl_ftypes = nla_nest_start(msg, ift);
949 if (!nl_ftypes)
950 goto nla_put_failure;
951 i = 0;
952 stypes = mgmt_stypes[ift].rx;
953 while (stypes) {
954 if (stypes & 1)
955 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
956 (i << 4) | IEEE80211_FTYPE_MGMT);
957 stypes >>= 1;
958 i++;
959 }
960 nla_nest_end(msg, nl_ftypes);
961 }
962 nla_nest_end(msg, nl_ifs);
963 }
964
965 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
966 struct nlattr *nl_wowlan;
967
968 nl_wowlan = nla_nest_start(msg,
969 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
970 if (!nl_wowlan)
971 goto nla_put_failure;
972
973 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
974 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
975 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
976 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
977 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
978 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
979 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
980 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
981 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
982 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
983 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
984 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
985 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
986 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
987 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
988 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
989 if (dev->wiphy.wowlan.n_patterns) {
990 struct nl80211_wowlan_pattern_support pat = {
991 .max_patterns = dev->wiphy.wowlan.n_patterns,
992 .min_pattern_len =
993 dev->wiphy.wowlan.pattern_min_len,
994 .max_pattern_len =
995 dev->wiphy.wowlan.pattern_max_len,
996 };
997 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
998 sizeof(pat), &pat);
999 }
1000
1001 nla_nest_end(msg, nl_wowlan);
1002 }
1003
1004 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1005 dev->wiphy.software_iftypes))
1006 goto nla_put_failure;
1007
1008 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1009 goto nla_put_failure;
1010
1011 return genlmsg_end(msg, hdr);
1012
1013 nla_put_failure:
1014 genlmsg_cancel(msg, hdr);
1015 return -EMSGSIZE;
1016 }
1017
1018 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1019 {
1020 int idx = 0;
1021 int start = cb->args[0];
1022 struct cfg80211_registered_device *dev;
1023
1024 mutex_lock(&cfg80211_mutex);
1025 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1026 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1027 continue;
1028 if (++idx <= start)
1029 continue;
1030 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1031 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1032 dev) < 0) {
1033 idx--;
1034 break;
1035 }
1036 }
1037 mutex_unlock(&cfg80211_mutex);
1038
1039 cb->args[0] = idx;
1040
1041 return skb->len;
1042 }
1043
1044 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1045 {
1046 struct sk_buff *msg;
1047 struct cfg80211_registered_device *dev = info->user_ptr[0];
1048
1049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1050 if (!msg)
1051 return -ENOMEM;
1052
1053 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1054 nlmsg_free(msg);
1055 return -ENOBUFS;
1056 }
1057
1058 return genlmsg_reply(msg, info);
1059 }
1060
1061 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1062 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1063 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1064 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1065 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1066 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1067 };
1068
1069 static int parse_txq_params(struct nlattr *tb[],
1070 struct ieee80211_txq_params *txq_params)
1071 {
1072 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1073 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1074 !tb[NL80211_TXQ_ATTR_AIFS])
1075 return -EINVAL;
1076
1077 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1078 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1079 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1080 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1081 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1082
1083 return 0;
1084 }
1085
1086 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1087 {
1088 /*
1089 * You can only set the channel explicitly for AP, mesh
1090 * and WDS type interfaces; all others have their channel
1091 * managed via their respective "establish a connection"
1092 * command (connect, join, ...)
1093 *
1094 * Monitors are special as they are normally slaved to
1095 * whatever else is going on, so they behave as though
1096 * you tried setting the wiphy channel itself.
1097 */
1098 return !wdev ||
1099 wdev->iftype == NL80211_IFTYPE_AP ||
1100 wdev->iftype == NL80211_IFTYPE_WDS ||
1101 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1102 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1103 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1104 }
1105
1106 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1107 struct wireless_dev *wdev,
1108 struct genl_info *info)
1109 {
1110 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1111 u32 freq;
1112 int result;
1113
1114 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1115 return -EINVAL;
1116
1117 if (!nl80211_can_set_dev_channel(wdev))
1118 return -EOPNOTSUPP;
1119
1120 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1121 channel_type = nla_get_u32(info->attrs[
1122 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1123 if (channel_type != NL80211_CHAN_NO_HT &&
1124 channel_type != NL80211_CHAN_HT20 &&
1125 channel_type != NL80211_CHAN_HT40PLUS &&
1126 channel_type != NL80211_CHAN_HT40MINUS)
1127 return -EINVAL;
1128 }
1129
1130 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1131
1132 mutex_lock(&rdev->devlist_mtx);
1133 if (wdev) {
1134 wdev_lock(wdev);
1135 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1136 wdev_unlock(wdev);
1137 } else {
1138 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1139 }
1140 mutex_unlock(&rdev->devlist_mtx);
1141
1142 return result;
1143 }
1144
1145 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1146 {
1147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1148 struct net_device *netdev = info->user_ptr[1];
1149
1150 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1151 }
1152
1153 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1154 {
1155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1156 struct net_device *dev = info->user_ptr[1];
1157 struct wireless_dev *wdev = dev->ieee80211_ptr;
1158 const u8 *bssid;
1159
1160 if (!info->attrs[NL80211_ATTR_MAC])
1161 return -EINVAL;
1162
1163 if (netif_running(dev))
1164 return -EBUSY;
1165
1166 if (!rdev->ops->set_wds_peer)
1167 return -EOPNOTSUPP;
1168
1169 if (wdev->iftype != NL80211_IFTYPE_WDS)
1170 return -EOPNOTSUPP;
1171
1172 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1173 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1174 }
1175
1176
1177 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1178 {
1179 struct cfg80211_registered_device *rdev;
1180 struct net_device *netdev = NULL;
1181 struct wireless_dev *wdev;
1182 int result = 0, rem_txq_params = 0;
1183 struct nlattr *nl_txq_params;
1184 u32 changed;
1185 u8 retry_short = 0, retry_long = 0;
1186 u32 frag_threshold = 0, rts_threshold = 0;
1187 u8 coverage_class = 0;
1188
1189 /*
1190 * Try to find the wiphy and netdev. Normally this
1191 * function shouldn't need the netdev, but this is
1192 * done for backward compatibility -- previously
1193 * setting the channel was done per wiphy, but now
1194 * it is per netdev. Previous userland like hostapd
1195 * also passed a netdev to set_wiphy, so that it is
1196 * possible to let that go to the right netdev!
1197 */
1198 mutex_lock(&cfg80211_mutex);
1199
1200 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1201 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1202
1203 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1204 if (netdev && netdev->ieee80211_ptr) {
1205 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1206 mutex_lock(&rdev->mtx);
1207 } else
1208 netdev = NULL;
1209 }
1210
1211 if (!netdev) {
1212 rdev = __cfg80211_rdev_from_info(info);
1213 if (IS_ERR(rdev)) {
1214 mutex_unlock(&cfg80211_mutex);
1215 return PTR_ERR(rdev);
1216 }
1217 wdev = NULL;
1218 netdev = NULL;
1219 result = 0;
1220
1221 mutex_lock(&rdev->mtx);
1222 } else if (netif_running(netdev) &&
1223 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1224 wdev = netdev->ieee80211_ptr;
1225 else
1226 wdev = NULL;
1227
1228 /*
1229 * end workaround code, by now the rdev is available
1230 * and locked, and wdev may or may not be NULL.
1231 */
1232
1233 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1234 result = cfg80211_dev_rename(
1235 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1236
1237 mutex_unlock(&cfg80211_mutex);
1238
1239 if (result)
1240 goto bad_res;
1241
1242 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1243 struct ieee80211_txq_params txq_params;
1244 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1245
1246 if (!rdev->ops->set_txq_params) {
1247 result = -EOPNOTSUPP;
1248 goto bad_res;
1249 }
1250
1251 if (!netdev) {
1252 result = -EINVAL;
1253 goto bad_res;
1254 }
1255
1256 nla_for_each_nested(nl_txq_params,
1257 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1258 rem_txq_params) {
1259 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1260 nla_data(nl_txq_params),
1261 nla_len(nl_txq_params),
1262 txq_params_policy);
1263 result = parse_txq_params(tb, &txq_params);
1264 if (result)
1265 goto bad_res;
1266
1267 result = rdev->ops->set_txq_params(&rdev->wiphy,
1268 netdev,
1269 &txq_params);
1270 if (result)
1271 goto bad_res;
1272 }
1273 }
1274
1275 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1276 result = __nl80211_set_channel(rdev, wdev, info);
1277 if (result)
1278 goto bad_res;
1279 }
1280
1281 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1282 enum nl80211_tx_power_setting type;
1283 int idx, mbm = 0;
1284
1285 if (!rdev->ops->set_tx_power) {
1286 result = -EOPNOTSUPP;
1287 goto bad_res;
1288 }
1289
1290 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1291 type = nla_get_u32(info->attrs[idx]);
1292
1293 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1294 (type != NL80211_TX_POWER_AUTOMATIC)) {
1295 result = -EINVAL;
1296 goto bad_res;
1297 }
1298
1299 if (type != NL80211_TX_POWER_AUTOMATIC) {
1300 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1301 mbm = nla_get_u32(info->attrs[idx]);
1302 }
1303
1304 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1305 if (result)
1306 goto bad_res;
1307 }
1308
1309 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1310 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1311 u32 tx_ant, rx_ant;
1312 if ((!rdev->wiphy.available_antennas_tx &&
1313 !rdev->wiphy.available_antennas_rx) ||
1314 !rdev->ops->set_antenna) {
1315 result = -EOPNOTSUPP;
1316 goto bad_res;
1317 }
1318
1319 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1320 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1321
1322 /* reject antenna configurations which don't match the
1323 * available antenna masks, except for the "all" mask */
1324 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1325 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1326 result = -EINVAL;
1327 goto bad_res;
1328 }
1329
1330 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1331 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1332
1333 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1334 if (result)
1335 goto bad_res;
1336 }
1337
1338 changed = 0;
1339
1340 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1341 retry_short = nla_get_u8(
1342 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1343 if (retry_short == 0) {
1344 result = -EINVAL;
1345 goto bad_res;
1346 }
1347 changed |= WIPHY_PARAM_RETRY_SHORT;
1348 }
1349
1350 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1351 retry_long = nla_get_u8(
1352 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1353 if (retry_long == 0) {
1354 result = -EINVAL;
1355 goto bad_res;
1356 }
1357 changed |= WIPHY_PARAM_RETRY_LONG;
1358 }
1359
1360 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1361 frag_threshold = nla_get_u32(
1362 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1363 if (frag_threshold < 256) {
1364 result = -EINVAL;
1365 goto bad_res;
1366 }
1367 if (frag_threshold != (u32) -1) {
1368 /*
1369 * Fragments (apart from the last one) are required to
1370 * have even length. Make the fragmentation code
1371 * simpler by stripping LSB should someone try to use
1372 * odd threshold value.
1373 */
1374 frag_threshold &= ~0x1;
1375 }
1376 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1377 }
1378
1379 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1380 rts_threshold = nla_get_u32(
1381 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1382 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1383 }
1384
1385 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1386 coverage_class = nla_get_u8(
1387 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1388 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1389 }
1390
1391 if (changed) {
1392 u8 old_retry_short, old_retry_long;
1393 u32 old_frag_threshold, old_rts_threshold;
1394 u8 old_coverage_class;
1395
1396 if (!rdev->ops->set_wiphy_params) {
1397 result = -EOPNOTSUPP;
1398 goto bad_res;
1399 }
1400
1401 old_retry_short = rdev->wiphy.retry_short;
1402 old_retry_long = rdev->wiphy.retry_long;
1403 old_frag_threshold = rdev->wiphy.frag_threshold;
1404 old_rts_threshold = rdev->wiphy.rts_threshold;
1405 old_coverage_class = rdev->wiphy.coverage_class;
1406
1407 if (changed & WIPHY_PARAM_RETRY_SHORT)
1408 rdev->wiphy.retry_short = retry_short;
1409 if (changed & WIPHY_PARAM_RETRY_LONG)
1410 rdev->wiphy.retry_long = retry_long;
1411 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1412 rdev->wiphy.frag_threshold = frag_threshold;
1413 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1414 rdev->wiphy.rts_threshold = rts_threshold;
1415 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1416 rdev->wiphy.coverage_class = coverage_class;
1417
1418 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1419 if (result) {
1420 rdev->wiphy.retry_short = old_retry_short;
1421 rdev->wiphy.retry_long = old_retry_long;
1422 rdev->wiphy.frag_threshold = old_frag_threshold;
1423 rdev->wiphy.rts_threshold = old_rts_threshold;
1424 rdev->wiphy.coverage_class = old_coverage_class;
1425 }
1426 }
1427
1428 bad_res:
1429 mutex_unlock(&rdev->mtx);
1430 if (netdev)
1431 dev_put(netdev);
1432 return result;
1433 }
1434
1435
1436 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1437 struct cfg80211_registered_device *rdev,
1438 struct net_device *dev)
1439 {
1440 void *hdr;
1441
1442 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1443 if (!hdr)
1444 return -1;
1445
1446 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1447 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1448 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1449 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1450
1451 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1452 rdev->devlist_generation ^
1453 (cfg80211_rdev_list_generation << 2));
1454
1455 return genlmsg_end(msg, hdr);
1456
1457 nla_put_failure:
1458 genlmsg_cancel(msg, hdr);
1459 return -EMSGSIZE;
1460 }
1461
1462 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1463 {
1464 int wp_idx = 0;
1465 int if_idx = 0;
1466 int wp_start = cb->args[0];
1467 int if_start = cb->args[1];
1468 struct cfg80211_registered_device *rdev;
1469 struct wireless_dev *wdev;
1470
1471 mutex_lock(&cfg80211_mutex);
1472 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1473 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1474 continue;
1475 if (wp_idx < wp_start) {
1476 wp_idx++;
1477 continue;
1478 }
1479 if_idx = 0;
1480
1481 mutex_lock(&rdev->devlist_mtx);
1482 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1483 if (if_idx < if_start) {
1484 if_idx++;
1485 continue;
1486 }
1487 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1488 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1489 rdev, wdev->netdev) < 0) {
1490 mutex_unlock(&rdev->devlist_mtx);
1491 goto out;
1492 }
1493 if_idx++;
1494 }
1495 mutex_unlock(&rdev->devlist_mtx);
1496
1497 wp_idx++;
1498 }
1499 out:
1500 mutex_unlock(&cfg80211_mutex);
1501
1502 cb->args[0] = wp_idx;
1503 cb->args[1] = if_idx;
1504
1505 return skb->len;
1506 }
1507
1508 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1509 {
1510 struct sk_buff *msg;
1511 struct cfg80211_registered_device *dev = info->user_ptr[0];
1512 struct net_device *netdev = info->user_ptr[1];
1513
1514 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1515 if (!msg)
1516 return -ENOMEM;
1517
1518 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1519 dev, netdev) < 0) {
1520 nlmsg_free(msg);
1521 return -ENOBUFS;
1522 }
1523
1524 return genlmsg_reply(msg, info);
1525 }
1526
1527 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1528 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1529 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1530 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1531 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1532 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1533 };
1534
1535 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1536 {
1537 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1538 int flag;
1539
1540 *mntrflags = 0;
1541
1542 if (!nla)
1543 return -EINVAL;
1544
1545 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1546 nla, mntr_flags_policy))
1547 return -EINVAL;
1548
1549 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1550 if (flags[flag])
1551 *mntrflags |= (1<<flag);
1552
1553 return 0;
1554 }
1555
1556 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1557 struct net_device *netdev, u8 use_4addr,
1558 enum nl80211_iftype iftype)
1559 {
1560 if (!use_4addr) {
1561 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1562 return -EBUSY;
1563 return 0;
1564 }
1565
1566 switch (iftype) {
1567 case NL80211_IFTYPE_AP_VLAN:
1568 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1569 return 0;
1570 break;
1571 case NL80211_IFTYPE_STATION:
1572 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1573 return 0;
1574 break;
1575 default:
1576 break;
1577 }
1578
1579 return -EOPNOTSUPP;
1580 }
1581
1582 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1583 {
1584 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1585 struct vif_params params;
1586 int err;
1587 enum nl80211_iftype otype, ntype;
1588 struct net_device *dev = info->user_ptr[1];
1589 u32 _flags, *flags = NULL;
1590 bool change = false;
1591
1592 memset(&params, 0, sizeof(params));
1593
1594 otype = ntype = dev->ieee80211_ptr->iftype;
1595
1596 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1597 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1598 if (otype != ntype)
1599 change = true;
1600 if (ntype > NL80211_IFTYPE_MAX)
1601 return -EINVAL;
1602 }
1603
1604 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1605 struct wireless_dev *wdev = dev->ieee80211_ptr;
1606
1607 if (ntype != NL80211_IFTYPE_MESH_POINT)
1608 return -EINVAL;
1609 if (netif_running(dev))
1610 return -EBUSY;
1611
1612 wdev_lock(wdev);
1613 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1614 IEEE80211_MAX_MESH_ID_LEN);
1615 wdev->mesh_id_up_len =
1616 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1617 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1618 wdev->mesh_id_up_len);
1619 wdev_unlock(wdev);
1620 }
1621
1622 if (info->attrs[NL80211_ATTR_4ADDR]) {
1623 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1624 change = true;
1625 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1626 if (err)
1627 return err;
1628 } else {
1629 params.use_4addr = -1;
1630 }
1631
1632 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1633 if (ntype != NL80211_IFTYPE_MONITOR)
1634 return -EINVAL;
1635 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1636 &_flags);
1637 if (err)
1638 return err;
1639
1640 flags = &_flags;
1641 change = true;
1642 }
1643
1644 if (change)
1645 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1646 else
1647 err = 0;
1648
1649 if (!err && params.use_4addr != -1)
1650 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1651
1652 return err;
1653 }
1654
1655 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1656 {
1657 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1658 struct vif_params params;
1659 struct net_device *dev;
1660 int err;
1661 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1662 u32 flags;
1663
1664 memset(&params, 0, sizeof(params));
1665
1666 if (!info->attrs[NL80211_ATTR_IFNAME])
1667 return -EINVAL;
1668
1669 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1670 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1671 if (type > NL80211_IFTYPE_MAX)
1672 return -EINVAL;
1673 }
1674
1675 if (!rdev->ops->add_virtual_intf ||
1676 !(rdev->wiphy.interface_modes & (1 << type)))
1677 return -EOPNOTSUPP;
1678
1679 if (info->attrs[NL80211_ATTR_4ADDR]) {
1680 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1681 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1682 if (err)
1683 return err;
1684 }
1685
1686 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1687 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1688 &flags);
1689 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1690 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1691 type, err ? NULL : &flags, &params);
1692 if (IS_ERR(dev))
1693 return PTR_ERR(dev);
1694
1695 if (type == NL80211_IFTYPE_MESH_POINT &&
1696 info->attrs[NL80211_ATTR_MESH_ID]) {
1697 struct wireless_dev *wdev = dev->ieee80211_ptr;
1698
1699 wdev_lock(wdev);
1700 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1701 IEEE80211_MAX_MESH_ID_LEN);
1702 wdev->mesh_id_up_len =
1703 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1704 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1705 wdev->mesh_id_up_len);
1706 wdev_unlock(wdev);
1707 }
1708
1709 return 0;
1710 }
1711
1712 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1713 {
1714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1715 struct net_device *dev = info->user_ptr[1];
1716
1717 if (!rdev->ops->del_virtual_intf)
1718 return -EOPNOTSUPP;
1719
1720 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1721 }
1722
1723 struct get_key_cookie {
1724 struct sk_buff *msg;
1725 int error;
1726 int idx;
1727 };
1728
1729 static void get_key_callback(void *c, struct key_params *params)
1730 {
1731 struct nlattr *key;
1732 struct get_key_cookie *cookie = c;
1733
1734 if (params->key)
1735 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1736 params->key_len, params->key);
1737
1738 if (params->seq)
1739 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1740 params->seq_len, params->seq);
1741
1742 if (params->cipher)
1743 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1744 params->cipher);
1745
1746 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1747 if (!key)
1748 goto nla_put_failure;
1749
1750 if (params->key)
1751 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1752 params->key_len, params->key);
1753
1754 if (params->seq)
1755 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1756 params->seq_len, params->seq);
1757
1758 if (params->cipher)
1759 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1760 params->cipher);
1761
1762 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1763
1764 nla_nest_end(cookie->msg, key);
1765
1766 return;
1767 nla_put_failure:
1768 cookie->error = 1;
1769 }
1770
1771 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1772 {
1773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1774 int err;
1775 struct net_device *dev = info->user_ptr[1];
1776 u8 key_idx = 0;
1777 const u8 *mac_addr = NULL;
1778 bool pairwise;
1779 struct get_key_cookie cookie = {
1780 .error = 0,
1781 };
1782 void *hdr;
1783 struct sk_buff *msg;
1784
1785 if (info->attrs[NL80211_ATTR_KEY_IDX])
1786 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1787
1788 if (key_idx > 5)
1789 return -EINVAL;
1790
1791 if (info->attrs[NL80211_ATTR_MAC])
1792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1793
1794 pairwise = !!mac_addr;
1795 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1796 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1797 if (kt >= NUM_NL80211_KEYTYPES)
1798 return -EINVAL;
1799 if (kt != NL80211_KEYTYPE_GROUP &&
1800 kt != NL80211_KEYTYPE_PAIRWISE)
1801 return -EINVAL;
1802 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1803 }
1804
1805 if (!rdev->ops->get_key)
1806 return -EOPNOTSUPP;
1807
1808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1809 if (!msg)
1810 return -ENOMEM;
1811
1812 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1813 NL80211_CMD_NEW_KEY);
1814 if (IS_ERR(hdr))
1815 return PTR_ERR(hdr);
1816
1817 cookie.msg = msg;
1818 cookie.idx = key_idx;
1819
1820 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1821 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1822 if (mac_addr)
1823 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1824
1825 if (pairwise && mac_addr &&
1826 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1827 return -ENOENT;
1828
1829 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1830 mac_addr, &cookie, get_key_callback);
1831
1832 if (err)
1833 goto free_msg;
1834
1835 if (cookie.error)
1836 goto nla_put_failure;
1837
1838 genlmsg_end(msg, hdr);
1839 return genlmsg_reply(msg, info);
1840
1841 nla_put_failure:
1842 err = -ENOBUFS;
1843 free_msg:
1844 nlmsg_free(msg);
1845 return err;
1846 }
1847
1848 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1849 {
1850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1851 struct key_parse key;
1852 int err;
1853 struct net_device *dev = info->user_ptr[1];
1854
1855 err = nl80211_parse_key(info, &key);
1856 if (err)
1857 return err;
1858
1859 if (key.idx < 0)
1860 return -EINVAL;
1861
1862 /* only support setting default key */
1863 if (!key.def && !key.defmgmt)
1864 return -EINVAL;
1865
1866 wdev_lock(dev->ieee80211_ptr);
1867
1868 if (key.def) {
1869 if (!rdev->ops->set_default_key) {
1870 err = -EOPNOTSUPP;
1871 goto out;
1872 }
1873
1874 err = nl80211_key_allowed(dev->ieee80211_ptr);
1875 if (err)
1876 goto out;
1877
1878 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1879 key.def_uni, key.def_multi);
1880
1881 if (err)
1882 goto out;
1883
1884 #ifdef CONFIG_CFG80211_WEXT
1885 dev->ieee80211_ptr->wext.default_key = key.idx;
1886 #endif
1887 } else {
1888 if (key.def_uni || !key.def_multi) {
1889 err = -EINVAL;
1890 goto out;
1891 }
1892
1893 if (!rdev->ops->set_default_mgmt_key) {
1894 err = -EOPNOTSUPP;
1895 goto out;
1896 }
1897
1898 err = nl80211_key_allowed(dev->ieee80211_ptr);
1899 if (err)
1900 goto out;
1901
1902 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1903 dev, key.idx);
1904 if (err)
1905 goto out;
1906
1907 #ifdef CONFIG_CFG80211_WEXT
1908 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1909 #endif
1910 }
1911
1912 out:
1913 wdev_unlock(dev->ieee80211_ptr);
1914
1915 return err;
1916 }
1917
1918 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1919 {
1920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1921 int err;
1922 struct net_device *dev = info->user_ptr[1];
1923 struct key_parse key;
1924 const u8 *mac_addr = NULL;
1925
1926 err = nl80211_parse_key(info, &key);
1927 if (err)
1928 return err;
1929
1930 if (!key.p.key)
1931 return -EINVAL;
1932
1933 if (info->attrs[NL80211_ATTR_MAC])
1934 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1935
1936 if (key.type == -1) {
1937 if (mac_addr)
1938 key.type = NL80211_KEYTYPE_PAIRWISE;
1939 else
1940 key.type = NL80211_KEYTYPE_GROUP;
1941 }
1942
1943 /* for now */
1944 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1945 key.type != NL80211_KEYTYPE_GROUP)
1946 return -EINVAL;
1947
1948 if (!rdev->ops->add_key)
1949 return -EOPNOTSUPP;
1950
1951 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1952 key.type == NL80211_KEYTYPE_PAIRWISE,
1953 mac_addr))
1954 return -EINVAL;
1955
1956 wdev_lock(dev->ieee80211_ptr);
1957 err = nl80211_key_allowed(dev->ieee80211_ptr);
1958 if (!err)
1959 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1960 key.type == NL80211_KEYTYPE_PAIRWISE,
1961 mac_addr, &key.p);
1962 wdev_unlock(dev->ieee80211_ptr);
1963
1964 return err;
1965 }
1966
1967 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1968 {
1969 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1970 int err;
1971 struct net_device *dev = info->user_ptr[1];
1972 u8 *mac_addr = NULL;
1973 struct key_parse key;
1974
1975 err = nl80211_parse_key(info, &key);
1976 if (err)
1977 return err;
1978
1979 if (info->attrs[NL80211_ATTR_MAC])
1980 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1981
1982 if (key.type == -1) {
1983 if (mac_addr)
1984 key.type = NL80211_KEYTYPE_PAIRWISE;
1985 else
1986 key.type = NL80211_KEYTYPE_GROUP;
1987 }
1988
1989 /* for now */
1990 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1991 key.type != NL80211_KEYTYPE_GROUP)
1992 return -EINVAL;
1993
1994 if (!rdev->ops->del_key)
1995 return -EOPNOTSUPP;
1996
1997 wdev_lock(dev->ieee80211_ptr);
1998 err = nl80211_key_allowed(dev->ieee80211_ptr);
1999
2000 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2001 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2002 err = -ENOENT;
2003
2004 if (!err)
2005 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2006 key.type == NL80211_KEYTYPE_PAIRWISE,
2007 mac_addr);
2008
2009 #ifdef CONFIG_CFG80211_WEXT
2010 if (!err) {
2011 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2012 dev->ieee80211_ptr->wext.default_key = -1;
2013 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2014 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2015 }
2016 #endif
2017 wdev_unlock(dev->ieee80211_ptr);
2018
2019 return err;
2020 }
2021
2022 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2023 {
2024 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2025 struct beacon_parameters *info);
2026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2027 struct net_device *dev = info->user_ptr[1];
2028 struct wireless_dev *wdev = dev->ieee80211_ptr;
2029 struct beacon_parameters params;
2030 int haveinfo = 0, err;
2031
2032 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2033 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2034 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2035 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2036 return -EINVAL;
2037
2038 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2039 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2040 return -EOPNOTSUPP;
2041
2042 memset(&params, 0, sizeof(params));
2043
2044 switch (info->genlhdr->cmd) {
2045 case NL80211_CMD_NEW_BEACON:
2046 /* these are required for NEW_BEACON */
2047 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2048 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2049 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2050 return -EINVAL;
2051
2052 params.interval =
2053 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2054 params.dtim_period =
2055 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2056
2057 err = cfg80211_validate_beacon_int(rdev, params.interval);
2058 if (err)
2059 return err;
2060
2061 /*
2062 * In theory, some of these attributes could be required for
2063 * NEW_BEACON, but since they were not used when the command was
2064 * originally added, keep them optional for old user space
2065 * programs to work with drivers that do not need the additional
2066 * information.
2067 */
2068 if (info->attrs[NL80211_ATTR_SSID]) {
2069 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2070 params.ssid_len =
2071 nla_len(info->attrs[NL80211_ATTR_SSID]);
2072 if (params.ssid_len == 0 ||
2073 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2074 return -EINVAL;
2075 }
2076
2077 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2078 params.hidden_ssid = nla_get_u32(
2079 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2080 if (params.hidden_ssid !=
2081 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2082 params.hidden_ssid !=
2083 NL80211_HIDDEN_SSID_ZERO_LEN &&
2084 params.hidden_ssid !=
2085 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2086 return -EINVAL;
2087 }
2088
2089 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2090
2091 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2092 params.auth_type = nla_get_u32(
2093 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2094 if (!nl80211_valid_auth_type(params.auth_type))
2095 return -EINVAL;
2096 } else
2097 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2098
2099 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2100 NL80211_MAX_NR_CIPHER_SUITES);
2101 if (err)
2102 return err;
2103
2104 call = rdev->ops->add_beacon;
2105 break;
2106 case NL80211_CMD_SET_BEACON:
2107 call = rdev->ops->set_beacon;
2108 break;
2109 default:
2110 WARN_ON(1);
2111 return -EOPNOTSUPP;
2112 }
2113
2114 if (!call)
2115 return -EOPNOTSUPP;
2116
2117 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2118 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2119 params.head_len =
2120 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2121 haveinfo = 1;
2122 }
2123
2124 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2125 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2126 params.tail_len =
2127 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2128 haveinfo = 1;
2129 }
2130
2131 if (!haveinfo)
2132 return -EINVAL;
2133
2134 if (info->attrs[NL80211_ATTR_IE]) {
2135 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2136 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2137 }
2138
2139 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2140 params.proberesp_ies =
2141 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2142 params.proberesp_ies_len =
2143 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2144 }
2145
2146 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2147 params.assocresp_ies =
2148 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2149 params.assocresp_ies_len =
2150 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2151 }
2152
2153 err = call(&rdev->wiphy, dev, &params);
2154 if (!err && params.interval)
2155 wdev->beacon_interval = params.interval;
2156 return err;
2157 }
2158
2159 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2160 {
2161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2162 struct net_device *dev = info->user_ptr[1];
2163 struct wireless_dev *wdev = dev->ieee80211_ptr;
2164 int err;
2165
2166 if (!rdev->ops->del_beacon)
2167 return -EOPNOTSUPP;
2168
2169 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2170 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2171 return -EOPNOTSUPP;
2172
2173 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2174 if (!err)
2175 wdev->beacon_interval = 0;
2176 return err;
2177 }
2178
2179 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2180 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2181 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2182 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2183 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2184 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2185 };
2186
2187 static int parse_station_flags(struct genl_info *info,
2188 struct station_parameters *params)
2189 {
2190 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2191 struct nlattr *nla;
2192 int flag;
2193
2194 /*
2195 * Try parsing the new attribute first so userspace
2196 * can specify both for older kernels.
2197 */
2198 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2199 if (nla) {
2200 struct nl80211_sta_flag_update *sta_flags;
2201
2202 sta_flags = nla_data(nla);
2203 params->sta_flags_mask = sta_flags->mask;
2204 params->sta_flags_set = sta_flags->set;
2205 if ((params->sta_flags_mask |
2206 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2207 return -EINVAL;
2208 return 0;
2209 }
2210
2211 /* if present, parse the old attribute */
2212
2213 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2214 if (!nla)
2215 return 0;
2216
2217 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2218 nla, sta_flags_policy))
2219 return -EINVAL;
2220
2221 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2222 params->sta_flags_mask &= ~1;
2223
2224 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2225 if (flags[flag])
2226 params->sta_flags_set |= (1<<flag);
2227
2228 return 0;
2229 }
2230
2231 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2232 int attr)
2233 {
2234 struct nlattr *rate;
2235 u16 bitrate;
2236
2237 rate = nla_nest_start(msg, attr);
2238 if (!rate)
2239 goto nla_put_failure;
2240
2241 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2242 bitrate = cfg80211_calculate_bitrate(info);
2243 if (bitrate > 0)
2244 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2245
2246 if (info->flags & RATE_INFO_FLAGS_MCS)
2247 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2248 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2249 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2250 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2251 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2252
2253 nla_nest_end(msg, rate);
2254 return true;
2255
2256 nla_put_failure:
2257 return false;
2258 }
2259
2260 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2261 int flags, struct net_device *dev,
2262 const u8 *mac_addr, struct station_info *sinfo)
2263 {
2264 void *hdr;
2265 struct nlattr *sinfoattr, *bss_param;
2266
2267 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2268 if (!hdr)
2269 return -1;
2270
2271 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2272 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2273
2274 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2275
2276 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2277 if (!sinfoattr)
2278 goto nla_put_failure;
2279 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2280 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2281 sinfo->connected_time);
2282 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2283 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2284 sinfo->inactive_time);
2285 if (sinfo->filled & STATION_INFO_RX_BYTES)
2286 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2287 sinfo->rx_bytes);
2288 if (sinfo->filled & STATION_INFO_TX_BYTES)
2289 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2290 sinfo->tx_bytes);
2291 if (sinfo->filled & STATION_INFO_LLID)
2292 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2293 sinfo->llid);
2294 if (sinfo->filled & STATION_INFO_PLID)
2295 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2296 sinfo->plid);
2297 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2298 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2299 sinfo->plink_state);
2300 if (sinfo->filled & STATION_INFO_SIGNAL)
2301 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2302 sinfo->signal);
2303 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2304 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2305 sinfo->signal_avg);
2306 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2307 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2308 NL80211_STA_INFO_TX_BITRATE))
2309 goto nla_put_failure;
2310 }
2311 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2312 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2313 NL80211_STA_INFO_RX_BITRATE))
2314 goto nla_put_failure;
2315 }
2316 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2317 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2318 sinfo->rx_packets);
2319 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2320 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2321 sinfo->tx_packets);
2322 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2323 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2324 sinfo->tx_retries);
2325 if (sinfo->filled & STATION_INFO_TX_FAILED)
2326 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2327 sinfo->tx_failed);
2328 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2329 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2330 if (!bss_param)
2331 goto nla_put_failure;
2332
2333 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2334 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2335 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2336 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2337 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2338 NLA_PUT_FLAG(msg,
2339 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2340 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2341 sinfo->bss_param.dtim_period);
2342 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2343 sinfo->bss_param.beacon_interval);
2344
2345 nla_nest_end(msg, bss_param);
2346 }
2347 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2348 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2349 sizeof(struct nl80211_sta_flag_update),
2350 &sinfo->sta_flags);
2351 nla_nest_end(msg, sinfoattr);
2352
2353 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2354 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2355 sinfo->assoc_req_ies);
2356
2357 return genlmsg_end(msg, hdr);
2358
2359 nla_put_failure:
2360 genlmsg_cancel(msg, hdr);
2361 return -EMSGSIZE;
2362 }
2363
2364 static int nl80211_dump_station(struct sk_buff *skb,
2365 struct netlink_callback *cb)
2366 {
2367 struct station_info sinfo;
2368 struct cfg80211_registered_device *dev;
2369 struct net_device *netdev;
2370 u8 mac_addr[ETH_ALEN];
2371 int sta_idx = cb->args[1];
2372 int err;
2373
2374 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2375 if (err)
2376 return err;
2377
2378 if (!dev->ops->dump_station) {
2379 err = -EOPNOTSUPP;
2380 goto out_err;
2381 }
2382
2383 while (1) {
2384 memset(&sinfo, 0, sizeof(sinfo));
2385 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2386 mac_addr, &sinfo);
2387 if (err == -ENOENT)
2388 break;
2389 if (err)
2390 goto out_err;
2391
2392 if (nl80211_send_station(skb,
2393 NETLINK_CB(cb->skb).pid,
2394 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2395 netdev, mac_addr,
2396 &sinfo) < 0)
2397 goto out;
2398
2399 sta_idx++;
2400 }
2401
2402
2403 out:
2404 cb->args[1] = sta_idx;
2405 err = skb->len;
2406 out_err:
2407 nl80211_finish_netdev_dump(dev);
2408
2409 return err;
2410 }
2411
2412 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2413 {
2414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2415 struct net_device *dev = info->user_ptr[1];
2416 struct station_info sinfo;
2417 struct sk_buff *msg;
2418 u8 *mac_addr = NULL;
2419 int err;
2420
2421 memset(&sinfo, 0, sizeof(sinfo));
2422
2423 if (!info->attrs[NL80211_ATTR_MAC])
2424 return -EINVAL;
2425
2426 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2427
2428 if (!rdev->ops->get_station)
2429 return -EOPNOTSUPP;
2430
2431 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2432 if (err)
2433 return err;
2434
2435 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2436 if (!msg)
2437 return -ENOMEM;
2438
2439 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2440 dev, mac_addr, &sinfo) < 0) {
2441 nlmsg_free(msg);
2442 return -ENOBUFS;
2443 }
2444
2445 return genlmsg_reply(msg, info);
2446 }
2447
2448 /*
2449 * Get vlan interface making sure it is running and on the right wiphy.
2450 */
2451 static int get_vlan(struct genl_info *info,
2452 struct cfg80211_registered_device *rdev,
2453 struct net_device **vlan)
2454 {
2455 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2456 *vlan = NULL;
2457
2458 if (vlanattr) {
2459 *vlan = dev_get_by_index(genl_info_net(info),
2460 nla_get_u32(vlanattr));
2461 if (!*vlan)
2462 return -ENODEV;
2463 if (!(*vlan)->ieee80211_ptr)
2464 return -EINVAL;
2465 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2466 return -EINVAL;
2467 if (!netif_running(*vlan))
2468 return -ENETDOWN;
2469 }
2470 return 0;
2471 }
2472
2473 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2474 {
2475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2476 int err;
2477 struct net_device *dev = info->user_ptr[1];
2478 struct station_parameters params;
2479 u8 *mac_addr = NULL;
2480
2481 memset(&params, 0, sizeof(params));
2482
2483 params.listen_interval = -1;
2484 params.plink_state = -1;
2485
2486 if (info->attrs[NL80211_ATTR_STA_AID])
2487 return -EINVAL;
2488
2489 if (!info->attrs[NL80211_ATTR_MAC])
2490 return -EINVAL;
2491
2492 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2493
2494 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2495 params.supported_rates =
2496 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2497 params.supported_rates_len =
2498 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2499 }
2500
2501 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2502 params.listen_interval =
2503 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2504
2505 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2506 params.ht_capa =
2507 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2508
2509 if (parse_station_flags(info, &params))
2510 return -EINVAL;
2511
2512 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2513 params.plink_action =
2514 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2515
2516 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2517 params.plink_state =
2518 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2519
2520 err = get_vlan(info, rdev, &params.vlan);
2521 if (err)
2522 goto out;
2523
2524 /* validate settings */
2525 err = 0;
2526
2527 switch (dev->ieee80211_ptr->iftype) {
2528 case NL80211_IFTYPE_AP:
2529 case NL80211_IFTYPE_AP_VLAN:
2530 case NL80211_IFTYPE_P2P_GO:
2531 /* disallow mesh-specific things */
2532 if (params.plink_action)
2533 err = -EINVAL;
2534 break;
2535 case NL80211_IFTYPE_P2P_CLIENT:
2536 case NL80211_IFTYPE_STATION:
2537 /* disallow things sta doesn't support */
2538 if (params.plink_action)
2539 err = -EINVAL;
2540 if (params.vlan)
2541 err = -EINVAL;
2542 if (params.supported_rates &&
2543 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2544 err = -EINVAL;
2545 if (params.ht_capa)
2546 err = -EINVAL;
2547 if (params.listen_interval >= 0)
2548 err = -EINVAL;
2549 if (params.sta_flags_mask &
2550 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2551 BIT(NL80211_STA_FLAG_TDLS_PEER)))
2552 err = -EINVAL;
2553 /* can't change the TDLS bit */
2554 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2555 (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2556 err = -EINVAL;
2557 break;
2558 case NL80211_IFTYPE_MESH_POINT:
2559 /* disallow things mesh doesn't support */
2560 if (params.vlan)
2561 err = -EINVAL;
2562 if (params.ht_capa)
2563 err = -EINVAL;
2564 if (params.listen_interval >= 0)
2565 err = -EINVAL;
2566 if (params.sta_flags_mask &
2567 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2568 BIT(NL80211_STA_FLAG_MFP) |
2569 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2570 err = -EINVAL;
2571 break;
2572 default:
2573 err = -EINVAL;
2574 }
2575
2576 if (err)
2577 goto out;
2578
2579 if (!rdev->ops->change_station) {
2580 err = -EOPNOTSUPP;
2581 goto out;
2582 }
2583
2584 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2585
2586 out:
2587 if (params.vlan)
2588 dev_put(params.vlan);
2589
2590 return err;
2591 }
2592
2593 static struct nla_policy
2594 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2595 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2596 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2597 };
2598
2599 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2600 {
2601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2602 int err;
2603 struct net_device *dev = info->user_ptr[1];
2604 struct station_parameters params;
2605 u8 *mac_addr = NULL;
2606
2607 memset(&params, 0, sizeof(params));
2608
2609 if (!info->attrs[NL80211_ATTR_MAC])
2610 return -EINVAL;
2611
2612 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2613 return -EINVAL;
2614
2615 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2616 return -EINVAL;
2617
2618 if (!info->attrs[NL80211_ATTR_STA_AID])
2619 return -EINVAL;
2620
2621 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2622 params.supported_rates =
2623 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2624 params.supported_rates_len =
2625 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2626 params.listen_interval =
2627 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2628
2629 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2630 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2631 return -EINVAL;
2632
2633 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2634 params.ht_capa =
2635 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2636
2637 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2638 params.plink_action =
2639 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2640
2641 if (parse_station_flags(info, &params))
2642 return -EINVAL;
2643
2644 /* parse WME attributes if sta is WME capable */
2645 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2646 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2647 info->attrs[NL80211_ATTR_STA_WME]) {
2648 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2649 struct nlattr *nla;
2650
2651 nla = info->attrs[NL80211_ATTR_STA_WME];
2652 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2653 nl80211_sta_wme_policy);
2654 if (err)
2655 return err;
2656
2657 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2658 params.uapsd_queues =
2659 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2660 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2661 return -EINVAL;
2662
2663 if (tb[NL80211_STA_WME_MAX_SP])
2664 params.max_sp =
2665 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2666
2667 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2668 return -EINVAL;
2669
2670 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2671 }
2672
2673 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2674 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2675 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2676 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2677 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2678 return -EINVAL;
2679
2680 /*
2681 * Only managed stations can add TDLS peers, and only when the
2682 * wiphy supports external TDLS setup.
2683 */
2684 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2685 !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2686 (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2687 (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2688 return -EINVAL;
2689
2690 err = get_vlan(info, rdev, &params.vlan);
2691 if (err)
2692 goto out;
2693
2694 /* validate settings */
2695 err = 0;
2696
2697 if (!rdev->ops->add_station) {
2698 err = -EOPNOTSUPP;
2699 goto out;
2700 }
2701
2702 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2703
2704 out:
2705 if (params.vlan)
2706 dev_put(params.vlan);
2707 return err;
2708 }
2709
2710 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2711 {
2712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2713 struct net_device *dev = info->user_ptr[1];
2714 u8 *mac_addr = NULL;
2715
2716 if (info->attrs[NL80211_ATTR_MAC])
2717 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2718
2719 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2720 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2721 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2722 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2723 return -EINVAL;
2724
2725 if (!rdev->ops->del_station)
2726 return -EOPNOTSUPP;
2727
2728 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2729 }
2730
2731 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2732 int flags, struct net_device *dev,
2733 u8 *dst, u8 *next_hop,
2734 struct mpath_info *pinfo)
2735 {
2736 void *hdr;
2737 struct nlattr *pinfoattr;
2738
2739 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2740 if (!hdr)
2741 return -1;
2742
2743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2744 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2745 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2746
2747 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2748
2749 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2750 if (!pinfoattr)
2751 goto nla_put_failure;
2752 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2753 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2754 pinfo->frame_qlen);
2755 if (pinfo->filled & MPATH_INFO_SN)
2756 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2757 pinfo->sn);
2758 if (pinfo->filled & MPATH_INFO_METRIC)
2759 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2760 pinfo->metric);
2761 if (pinfo->filled & MPATH_INFO_EXPTIME)
2762 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2763 pinfo->exptime);
2764 if (pinfo->filled & MPATH_INFO_FLAGS)
2765 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2766 pinfo->flags);
2767 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2768 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2769 pinfo->discovery_timeout);
2770 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2771 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2772 pinfo->discovery_retries);
2773
2774 nla_nest_end(msg, pinfoattr);
2775
2776 return genlmsg_end(msg, hdr);
2777
2778 nla_put_failure:
2779 genlmsg_cancel(msg, hdr);
2780 return -EMSGSIZE;
2781 }
2782
2783 static int nl80211_dump_mpath(struct sk_buff *skb,
2784 struct netlink_callback *cb)
2785 {
2786 struct mpath_info pinfo;
2787 struct cfg80211_registered_device *dev;
2788 struct net_device *netdev;
2789 u8 dst[ETH_ALEN];
2790 u8 next_hop[ETH_ALEN];
2791 int path_idx = cb->args[1];
2792 int err;
2793
2794 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2795 if (err)
2796 return err;
2797
2798 if (!dev->ops->dump_mpath) {
2799 err = -EOPNOTSUPP;
2800 goto out_err;
2801 }
2802
2803 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2804 err = -EOPNOTSUPP;
2805 goto out_err;
2806 }
2807
2808 while (1) {
2809 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2810 dst, next_hop, &pinfo);
2811 if (err == -ENOENT)
2812 break;
2813 if (err)
2814 goto out_err;
2815
2816 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2817 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2818 netdev, dst, next_hop,
2819 &pinfo) < 0)
2820 goto out;
2821
2822 path_idx++;
2823 }
2824
2825
2826 out:
2827 cb->args[1] = path_idx;
2828 err = skb->len;
2829 out_err:
2830 nl80211_finish_netdev_dump(dev);
2831 return err;
2832 }
2833
2834 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2835 {
2836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2837 int err;
2838 struct net_device *dev = info->user_ptr[1];
2839 struct mpath_info pinfo;
2840 struct sk_buff *msg;
2841 u8 *dst = NULL;
2842 u8 next_hop[ETH_ALEN];
2843
2844 memset(&pinfo, 0, sizeof(pinfo));
2845
2846 if (!info->attrs[NL80211_ATTR_MAC])
2847 return -EINVAL;
2848
2849 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2850
2851 if (!rdev->ops->get_mpath)
2852 return -EOPNOTSUPP;
2853
2854 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2855 return -EOPNOTSUPP;
2856
2857 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2858 if (err)
2859 return err;
2860
2861 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2862 if (!msg)
2863 return -ENOMEM;
2864
2865 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2866 dev, dst, next_hop, &pinfo) < 0) {
2867 nlmsg_free(msg);
2868 return -ENOBUFS;
2869 }
2870
2871 return genlmsg_reply(msg, info);
2872 }
2873
2874 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2875 {
2876 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2877 struct net_device *dev = info->user_ptr[1];
2878 u8 *dst = NULL;
2879 u8 *next_hop = NULL;
2880
2881 if (!info->attrs[NL80211_ATTR_MAC])
2882 return -EINVAL;
2883
2884 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2885 return -EINVAL;
2886
2887 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2888 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2889
2890 if (!rdev->ops->change_mpath)
2891 return -EOPNOTSUPP;
2892
2893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2894 return -EOPNOTSUPP;
2895
2896 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2897 }
2898
2899 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2900 {
2901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2902 struct net_device *dev = info->user_ptr[1];
2903 u8 *dst = NULL;
2904 u8 *next_hop = NULL;
2905
2906 if (!info->attrs[NL80211_ATTR_MAC])
2907 return -EINVAL;
2908
2909 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2910 return -EINVAL;
2911
2912 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2913 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2914
2915 if (!rdev->ops->add_mpath)
2916 return -EOPNOTSUPP;
2917
2918 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2919 return -EOPNOTSUPP;
2920
2921 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2922 }
2923
2924 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2925 {
2926 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2927 struct net_device *dev = info->user_ptr[1];
2928 u8 *dst = NULL;
2929
2930 if (info->attrs[NL80211_ATTR_MAC])
2931 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2932
2933 if (!rdev->ops->del_mpath)
2934 return -EOPNOTSUPP;
2935
2936 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2937 }
2938
2939 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2940 {
2941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2942 struct net_device *dev = info->user_ptr[1];
2943 struct bss_parameters params;
2944
2945 memset(&params, 0, sizeof(params));
2946 /* default to not changing parameters */
2947 params.use_cts_prot = -1;
2948 params.use_short_preamble = -1;
2949 params.use_short_slot_time = -1;
2950 params.ap_isolate = -1;
2951 params.ht_opmode = -1;
2952
2953 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2954 params.use_cts_prot =
2955 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2956 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2957 params.use_short_preamble =
2958 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2959 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2960 params.use_short_slot_time =
2961 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2962 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2963 params.basic_rates =
2964 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2965 params.basic_rates_len =
2966 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2967 }
2968 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2969 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2970 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2971 params.ht_opmode =
2972 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2973
2974 if (!rdev->ops->change_bss)
2975 return -EOPNOTSUPP;
2976
2977 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2978 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2979 return -EOPNOTSUPP;
2980
2981 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2982 }
2983
2984 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2985 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2986 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2987 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2988 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2989 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2990 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2991 };
2992
2993 static int parse_reg_rule(struct nlattr *tb[],
2994 struct ieee80211_reg_rule *reg_rule)
2995 {
2996 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2997 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2998
2999 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3000 return -EINVAL;
3001 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3002 return -EINVAL;
3003 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3004 return -EINVAL;
3005 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3006 return -EINVAL;
3007 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3008 return -EINVAL;
3009
3010 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3011
3012 freq_range->start_freq_khz =
3013 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3014 freq_range->end_freq_khz =
3015 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3016 freq_range->max_bandwidth_khz =
3017 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3018
3019 power_rule->max_eirp =
3020 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3021
3022 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3023 power_rule->max_antenna_gain =
3024 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3025
3026 return 0;
3027 }
3028
3029 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3030 {
3031 int r;
3032 char *data = NULL;
3033
3034 /*
3035 * You should only get this when cfg80211 hasn't yet initialized
3036 * completely when built-in to the kernel right between the time
3037 * window between nl80211_init() and regulatory_init(), if that is
3038 * even possible.
3039 */
3040 mutex_lock(&cfg80211_mutex);
3041 if (unlikely(!cfg80211_regdomain)) {
3042 mutex_unlock(&cfg80211_mutex);
3043 return -EINPROGRESS;
3044 }
3045 mutex_unlock(&cfg80211_mutex);
3046
3047 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3048 return -EINVAL;
3049
3050 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3051
3052 r = regulatory_hint_user(data);
3053
3054 return r;
3055 }
3056
3057 static int nl80211_get_mesh_config(struct sk_buff *skb,
3058 struct genl_info *info)
3059 {
3060 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3061 struct net_device *dev = info->user_ptr[1];
3062 struct wireless_dev *wdev = dev->ieee80211_ptr;
3063 struct mesh_config cur_params;
3064 int err = 0;
3065 void *hdr;
3066 struct nlattr *pinfoattr;
3067 struct sk_buff *msg;
3068
3069 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3070 return -EOPNOTSUPP;
3071
3072 if (!rdev->ops->get_mesh_config)
3073 return -EOPNOTSUPP;
3074
3075 wdev_lock(wdev);
3076 /* If not connected, get default parameters */
3077 if (!wdev->mesh_id_len)
3078 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3079 else
3080 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3081 &cur_params);
3082 wdev_unlock(wdev);
3083
3084 if (err)
3085 return err;
3086
3087 /* Draw up a netlink message to send back */
3088 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3089 if (!msg)
3090 return -ENOMEM;
3091 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3092 NL80211_CMD_GET_MESH_CONFIG);
3093 if (!hdr)
3094 goto out;
3095 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3096 if (!pinfoattr)
3097 goto nla_put_failure;
3098 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3099 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3100 cur_params.dot11MeshRetryTimeout);
3101 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3102 cur_params.dot11MeshConfirmTimeout);
3103 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3104 cur_params.dot11MeshHoldingTimeout);
3105 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3106 cur_params.dot11MeshMaxPeerLinks);
3107 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3108 cur_params.dot11MeshMaxRetries);
3109 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3110 cur_params.dot11MeshTTL);
3111 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3112 cur_params.element_ttl);
3113 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3114 cur_params.auto_open_plinks);
3115 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3116 cur_params.dot11MeshHWMPmaxPREQretries);
3117 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3118 cur_params.path_refresh_time);
3119 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3120 cur_params.min_discovery_timeout);
3121 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3122 cur_params.dot11MeshHWMPactivePathTimeout);
3123 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3124 cur_params.dot11MeshHWMPpreqMinInterval);
3125 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3126 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3127 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3128 cur_params.dot11MeshHWMPRootMode);
3129 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3130 cur_params.dot11MeshHWMPRannInterval);
3131 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3132 cur_params.dot11MeshGateAnnouncementProtocol);
3133 nla_nest_end(msg, pinfoattr);
3134 genlmsg_end(msg, hdr);
3135 return genlmsg_reply(msg, info);
3136
3137 nla_put_failure:
3138 genlmsg_cancel(msg, hdr);
3139 out:
3140 nlmsg_free(msg);
3141 return -ENOBUFS;
3142 }
3143
3144 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3145 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3146 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3147 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3148 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3149 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3150 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3151 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3152 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3153
3154 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3155 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3156 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3157 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3158 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3159 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3160 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3161 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3162 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3163 };
3164
3165 static const struct nla_policy
3166 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3167 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3168 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3169 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3170 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3171 .len = IEEE80211_MAX_DATA_LEN },
3172 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3173 };
3174
3175 static int nl80211_parse_mesh_config(struct genl_info *info,
3176 struct mesh_config *cfg,
3177 u32 *mask_out)
3178 {
3179 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3180 u32 mask = 0;
3181
3182 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3183 do {\
3184 if (table[attr_num]) {\
3185 cfg->param = nla_fn(table[attr_num]); \
3186 mask |= (1 << (attr_num - 1)); \
3187 } \
3188 } while (0);\
3189
3190
3191 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3192 return -EINVAL;
3193 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3194 info->attrs[NL80211_ATTR_MESH_CONFIG],
3195 nl80211_meshconf_params_policy))
3196 return -EINVAL;
3197
3198 /* This makes sure that there aren't more than 32 mesh config
3199 * parameters (otherwise our bitfield scheme would not work.) */
3200 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3201
3202 /* Fill in the params struct */
3203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3204 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3206 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3207 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3208 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3210 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3212 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3214 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3216 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3218 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3220 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3221 nla_get_u8);
3222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3223 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3224 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3225 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3226 nla_get_u16);
3227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3228 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3229 nla_get_u32);
3230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3231 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3232 nla_get_u16);
3233 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3234 dot11MeshHWMPnetDiameterTraversalTime,
3235 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3236 nla_get_u16);
3237 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3238 dot11MeshHWMPRootMode, mask,
3239 NL80211_MESHCONF_HWMP_ROOTMODE,
3240 nla_get_u8);
3241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3242 dot11MeshHWMPRannInterval, mask,
3243 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3244 nla_get_u16);
3245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3246 dot11MeshGateAnnouncementProtocol, mask,
3247 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3248 nla_get_u8);
3249 if (mask_out)
3250 *mask_out = mask;
3251
3252 return 0;
3253
3254 #undef FILL_IN_MESH_PARAM_IF_SET
3255 }
3256
3257 static int nl80211_parse_mesh_setup(struct genl_info *info,
3258 struct mesh_setup *setup)
3259 {
3260 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3261
3262 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3263 return -EINVAL;
3264 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3265 info->attrs[NL80211_ATTR_MESH_SETUP],
3266 nl80211_mesh_setup_params_policy))
3267 return -EINVAL;
3268
3269 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3270 setup->path_sel_proto =
3271 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3272 IEEE80211_PATH_PROTOCOL_VENDOR :
3273 IEEE80211_PATH_PROTOCOL_HWMP;
3274
3275 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3276 setup->path_metric =
3277 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3278 IEEE80211_PATH_METRIC_VENDOR :
3279 IEEE80211_PATH_METRIC_AIRTIME;
3280
3281
3282 if (tb[NL80211_MESH_SETUP_IE]) {
3283 struct nlattr *ieattr =
3284 tb[NL80211_MESH_SETUP_IE];
3285 if (!is_valid_ie_attr(ieattr))
3286 return -EINVAL;
3287 setup->ie = nla_data(ieattr);
3288 setup->ie_len = nla_len(ieattr);
3289 }
3290 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3291 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3292
3293 return 0;
3294 }
3295
3296 static int nl80211_update_mesh_config(struct sk_buff *skb,
3297 struct genl_info *info)
3298 {
3299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3300 struct net_device *dev = info->user_ptr[1];
3301 struct wireless_dev *wdev = dev->ieee80211_ptr;
3302 struct mesh_config cfg;
3303 u32 mask;
3304 int err;
3305
3306 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3307 return -EOPNOTSUPP;
3308
3309 if (!rdev->ops->update_mesh_config)
3310 return -EOPNOTSUPP;
3311
3312 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3313 if (err)
3314 return err;
3315
3316 wdev_lock(wdev);
3317 if (!wdev->mesh_id_len)
3318 err = -ENOLINK;
3319
3320 if (!err)
3321 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3322 mask, &cfg);
3323
3324 wdev_unlock(wdev);
3325
3326 return err;
3327 }
3328
3329 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3330 {
3331 struct sk_buff *msg;
3332 void *hdr = NULL;
3333 struct nlattr *nl_reg_rules;
3334 unsigned int i;
3335 int err = -EINVAL;
3336
3337 mutex_lock(&cfg80211_mutex);
3338
3339 if (!cfg80211_regdomain)
3340 goto out;
3341
3342 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3343 if (!msg) {
3344 err = -ENOBUFS;
3345 goto out;
3346 }
3347
3348 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3349 NL80211_CMD_GET_REG);
3350 if (!hdr)
3351 goto put_failure;
3352
3353 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3354 cfg80211_regdomain->alpha2);
3355
3356 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3357 if (!nl_reg_rules)
3358 goto nla_put_failure;
3359
3360 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3361 struct nlattr *nl_reg_rule;
3362 const struct ieee80211_reg_rule *reg_rule;
3363 const struct ieee80211_freq_range *freq_range;
3364 const struct ieee80211_power_rule *power_rule;
3365
3366 reg_rule = &cfg80211_regdomain->reg_rules[i];
3367 freq_range = &reg_rule->freq_range;
3368 power_rule = &reg_rule->power_rule;
3369
3370 nl_reg_rule = nla_nest_start(msg, i);
3371 if (!nl_reg_rule)
3372 goto nla_put_failure;
3373
3374 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3375 reg_rule->flags);
3376 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3377 freq_range->start_freq_khz);
3378 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3379 freq_range->end_freq_khz);
3380 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3381 freq_range->max_bandwidth_khz);
3382 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3383 power_rule->max_antenna_gain);
3384 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3385 power_rule->max_eirp);
3386
3387 nla_nest_end(msg, nl_reg_rule);
3388 }
3389
3390 nla_nest_end(msg, nl_reg_rules);
3391
3392 genlmsg_end(msg, hdr);
3393 err = genlmsg_reply(msg, info);
3394 goto out;
3395
3396 nla_put_failure:
3397 genlmsg_cancel(msg, hdr);
3398 put_failure:
3399 nlmsg_free(msg);
3400 err = -EMSGSIZE;
3401 out:
3402 mutex_unlock(&cfg80211_mutex);
3403 return err;
3404 }
3405
3406 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3407 {
3408 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3409 struct nlattr *nl_reg_rule;
3410 char *alpha2 = NULL;
3411 int rem_reg_rules = 0, r = 0;
3412 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3413 struct ieee80211_regdomain *rd = NULL;
3414
3415 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3416 return -EINVAL;
3417
3418 if (!info->attrs[NL80211_ATTR_REG_RULES])
3419 return -EINVAL;
3420
3421 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3422
3423 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3424 rem_reg_rules) {
3425 num_rules++;
3426 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3427 return -EINVAL;
3428 }
3429
3430 mutex_lock(&cfg80211_mutex);
3431
3432 if (!reg_is_valid_request(alpha2)) {
3433 r = -EINVAL;
3434 goto bad_reg;
3435 }
3436
3437 size_of_regd = sizeof(struct ieee80211_regdomain) +
3438 (num_rules * sizeof(struct ieee80211_reg_rule));
3439
3440 rd = kzalloc(size_of_regd, GFP_KERNEL);
3441 if (!rd) {
3442 r = -ENOMEM;
3443 goto bad_reg;
3444 }
3445
3446 rd->n_reg_rules = num_rules;
3447 rd->alpha2[0] = alpha2[0];
3448 rd->alpha2[1] = alpha2[1];
3449
3450 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3451 rem_reg_rules) {
3452 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3453 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3454 reg_rule_policy);
3455 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3456 if (r)
3457 goto bad_reg;
3458
3459 rule_idx++;
3460
3461 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3462 r = -EINVAL;
3463 goto bad_reg;
3464 }
3465 }
3466
3467 BUG_ON(rule_idx != num_rules);
3468
3469 r = set_regdom(rd);
3470
3471 mutex_unlock(&cfg80211_mutex);
3472
3473 return r;
3474
3475 bad_reg:
3476 mutex_unlock(&cfg80211_mutex);
3477 kfree(rd);
3478 return r;
3479 }
3480
3481 static int validate_scan_freqs(struct nlattr *freqs)
3482 {
3483 struct nlattr *attr1, *attr2;
3484 int n_channels = 0, tmp1, tmp2;
3485
3486 nla_for_each_nested(attr1, freqs, tmp1) {
3487 n_channels++;
3488 /*
3489 * Some hardware has a limited channel list for
3490 * scanning, and it is pretty much nonsensical
3491 * to scan for a channel twice, so disallow that
3492 * and don't require drivers to check that the
3493 * channel list they get isn't longer than what
3494 * they can scan, as long as they can scan all
3495 * the channels they registered at once.
3496 */
3497 nla_for_each_nested(attr2, freqs, tmp2)
3498 if (attr1 != attr2 &&
3499 nla_get_u32(attr1) == nla_get_u32(attr2))
3500 return 0;
3501 }
3502
3503 return n_channels;
3504 }
3505
3506 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3507 {
3508 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3509 struct net_device *dev = info->user_ptr[1];
3510 struct cfg80211_scan_request *request;
3511 struct nlattr *attr;
3512 struct wiphy *wiphy;
3513 int err, tmp, n_ssids = 0, n_channels, i;
3514 size_t ie_len;
3515
3516 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3517 return -EINVAL;
3518
3519 wiphy = &rdev->wiphy;
3520
3521 if (!rdev->ops->scan)
3522 return -EOPNOTSUPP;
3523
3524 if (rdev->scan_req)
3525 return -EBUSY;
3526
3527 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3528 n_channels = validate_scan_freqs(
3529 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3530 if (!n_channels)
3531 return -EINVAL;
3532 } else {
3533 enum ieee80211_band band;
3534 n_channels = 0;
3535
3536 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3537 if (wiphy->bands[band])
3538 n_channels += wiphy->bands[band]->n_channels;
3539 }
3540
3541 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3542 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3543 n_ssids++;
3544
3545 if (n_ssids > wiphy->max_scan_ssids)
3546 return -EINVAL;
3547
3548 if (info->attrs[NL80211_ATTR_IE])
3549 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3550 else
3551 ie_len = 0;
3552
3553 if (ie_len > wiphy->max_scan_ie_len)
3554 return -EINVAL;
3555
3556 request = kzalloc(sizeof(*request)
3557 + sizeof(*request->ssids) * n_ssids
3558 + sizeof(*request->channels) * n_channels
3559 + ie_len, GFP_KERNEL);
3560 if (!request)
3561 return -ENOMEM;
3562
3563 if (n_ssids)
3564 request->ssids = (void *)&request->channels[n_channels];
3565 request->n_ssids = n_ssids;
3566 if (ie_len) {
3567 if (request->ssids)
3568 request->ie = (void *)(request->ssids + n_ssids);
3569 else
3570 request->ie = (void *)(request->channels + n_channels);
3571 }
3572
3573 i = 0;
3574 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3575 /* user specified, bail out if channel not found */
3576 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3577 struct ieee80211_channel *chan;
3578
3579 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3580
3581 if (!chan) {
3582 err = -EINVAL;
3583 goto out_free;
3584 }
3585
3586 /* ignore disabled channels */
3587 if (chan->flags & IEEE80211_CHAN_DISABLED)
3588 continue;
3589
3590 request->channels[i] = chan;
3591 i++;
3592 }
3593 } else {
3594 enum ieee80211_band band;
3595
3596 /* all channels */
3597 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3598 int j;
3599 if (!wiphy->bands[band])
3600 continue;
3601 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3602 struct ieee80211_channel *chan;
3603
3604 chan = &wiphy->bands[band]->channels[j];
3605
3606 if (chan->flags & IEEE80211_CHAN_DISABLED)
3607 continue;
3608
3609 request->channels[i] = chan;
3610 i++;
3611 }
3612 }
3613 }
3614
3615 if (!i) {
3616 err = -EINVAL;
3617 goto out_free;
3618 }
3619
3620 request->n_channels = i;
3621
3622 i = 0;
3623 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3624 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3625 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3626 err = -EINVAL;
3627 goto out_free;
3628 }
3629 request->ssids[i].ssid_len = nla_len(attr);
3630 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3631 i++;
3632 }
3633 }
3634
3635 if (info->attrs[NL80211_ATTR_IE]) {
3636 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3637 memcpy((void *)request->ie,
3638 nla_data(info->attrs[NL80211_ATTR_IE]),
3639 request->ie_len);
3640 }
3641
3642 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3643 if (wiphy->bands[i])
3644 request->rates[i] =
3645 (1 << wiphy->bands[i]->n_bitrates) - 1;
3646
3647 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3648 nla_for_each_nested(attr,
3649 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3650 tmp) {
3651 enum ieee80211_band band = nla_type(attr);
3652
3653 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3654 err = -EINVAL;
3655 goto out_free;
3656 }
3657 err = ieee80211_get_ratemask(wiphy->bands[band],
3658 nla_data(attr),
3659 nla_len(attr),
3660 &request->rates[band]);
3661 if (err)
3662 goto out_free;
3663 }
3664 }
3665
3666 request->no_cck =
3667 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3668
3669 request->dev = dev;
3670 request->wiphy = &rdev->wiphy;
3671
3672 rdev->scan_req = request;
3673 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3674
3675 if (!err) {
3676 nl80211_send_scan_start(rdev, dev);
3677 dev_hold(dev);
3678 } else {
3679 out_free:
3680 rdev->scan_req = NULL;
3681 kfree(request);
3682 }
3683
3684 return err;
3685 }
3686
3687 static int nl80211_start_sched_scan(struct sk_buff *skb,
3688 struct genl_info *info)
3689 {
3690 struct cfg80211_sched_scan_request *request;
3691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3692 struct net_device *dev = info->user_ptr[1];
3693 struct nlattr *attr;
3694 struct wiphy *wiphy;
3695 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3696 u32 interval;
3697 enum ieee80211_band band;
3698 size_t ie_len;
3699 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3700
3701 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3702 !rdev->ops->sched_scan_start)
3703 return -EOPNOTSUPP;
3704
3705 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3706 return -EINVAL;
3707
3708 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3709 return -EINVAL;
3710
3711 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3712 if (interval == 0)
3713 return -EINVAL;
3714
3715 wiphy = &rdev->wiphy;
3716
3717 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3718 n_channels = validate_scan_freqs(
3719 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3720 if (!n_channels)
3721 return -EINVAL;
3722 } else {
3723 n_channels = 0;
3724
3725 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3726 if (wiphy->bands[band])
3727 n_channels += wiphy->bands[band]->n_channels;
3728 }
3729
3730 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3731 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3732 tmp)
3733 n_ssids++;
3734
3735 if (n_ssids > wiphy->max_sched_scan_ssids)
3736 return -EINVAL;
3737
3738 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3739 nla_for_each_nested(attr,
3740 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3741 tmp)
3742 n_match_sets++;
3743
3744 if (n_match_sets > wiphy->max_match_sets)
3745 return -EINVAL;
3746
3747 if (info->attrs[NL80211_ATTR_IE])
3748 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3749 else
3750 ie_len = 0;
3751
3752 if (ie_len > wiphy->max_sched_scan_ie_len)
3753 return -EINVAL;
3754
3755 mutex_lock(&rdev->sched_scan_mtx);
3756
3757 if (rdev->sched_scan_req) {
3758 err = -EINPROGRESS;
3759 goto out;
3760 }
3761
3762 request = kzalloc(sizeof(*request)
3763 + sizeof(*request->ssids) * n_ssids
3764 + sizeof(*request->match_sets) * n_match_sets
3765 + sizeof(*request->channels) * n_channels
3766 + ie_len, GFP_KERNEL);
3767 if (!request) {
3768 err = -ENOMEM;
3769 goto out;
3770 }
3771
3772 if (n_ssids)
3773 request->ssids = (void *)&request->channels[n_channels];
3774 request->n_ssids = n_ssids;
3775 if (ie_len) {
3776 if (request->ssids)
3777 request->ie = (void *)(request->ssids + n_ssids);
3778 else
3779 request->ie = (void *)(request->channels + n_channels);
3780 }
3781
3782 if (n_match_sets) {
3783 if (request->ie)
3784 request->match_sets = (void *)(request->ie + ie_len);
3785 else if (request->ssids)
3786 request->match_sets =
3787 (void *)(request->ssids + n_ssids);
3788 else
3789 request->match_sets =
3790 (void *)(request->channels + n_channels);
3791 }
3792 request->n_match_sets = n_match_sets;
3793
3794 i = 0;
3795 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3796 /* user specified, bail out if channel not found */
3797 nla_for_each_nested(attr,
3798 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3799 tmp) {
3800 struct ieee80211_channel *chan;
3801
3802 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3803
3804 if (!chan) {
3805 err = -EINVAL;
3806 goto out_free;
3807 }
3808
3809 /* ignore disabled channels */
3810 if (chan->flags & IEEE80211_CHAN_DISABLED)
3811 continue;
3812
3813 request->channels[i] = chan;
3814 i++;
3815 }
3816 } else {
3817 /* all channels */
3818 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3819 int j;
3820 if (!wiphy->bands[band])
3821 continue;
3822 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3823 struct ieee80211_channel *chan;
3824
3825 chan = &wiphy->bands[band]->channels[j];
3826
3827 if (chan->flags & IEEE80211_CHAN_DISABLED)
3828 continue;
3829
3830 request->channels[i] = chan;
3831 i++;
3832 }
3833 }
3834 }
3835
3836 if (!i) {
3837 err = -EINVAL;
3838 goto out_free;
3839 }
3840
3841 request->n_channels = i;
3842
3843 i = 0;
3844 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3845 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3846 tmp) {
3847 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3848 err = -EINVAL;
3849 goto out_free;
3850 }
3851 request->ssids[i].ssid_len = nla_len(attr);
3852 memcpy(request->ssids[i].ssid, nla_data(attr),
3853 nla_len(attr));
3854 i++;
3855 }
3856 }
3857
3858 i = 0;
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 struct nlattr *ssid;
3864
3865 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3866 nla_data(attr), nla_len(attr),
3867 nl80211_match_policy);
3868 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3869 if (ssid) {
3870 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3871 err = -EINVAL;
3872 goto out_free;
3873 }
3874 memcpy(request->match_sets[i].ssid.ssid,
3875 nla_data(ssid), nla_len(ssid));
3876 request->match_sets[i].ssid.ssid_len =
3877 nla_len(ssid);
3878 }
3879 i++;
3880 }
3881 }
3882
3883 if (info->attrs[NL80211_ATTR_IE]) {
3884 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3885 memcpy((void *)request->ie,
3886 nla_data(info->attrs[NL80211_ATTR_IE]),
3887 request->ie_len);
3888 }
3889
3890 request->dev = dev;
3891 request->wiphy = &rdev->wiphy;
3892 request->interval = interval;
3893
3894 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3895 if (!err) {
3896 rdev->sched_scan_req = request;
3897 nl80211_send_sched_scan(rdev, dev,
3898 NL80211_CMD_START_SCHED_SCAN);
3899 goto out;
3900 }
3901
3902 out_free:
3903 kfree(request);
3904 out:
3905 mutex_unlock(&rdev->sched_scan_mtx);
3906 return err;
3907 }
3908
3909 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3910 struct genl_info *info)
3911 {
3912 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3913 int err;
3914
3915 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3916 !rdev->ops->sched_scan_stop)
3917 return -EOPNOTSUPP;
3918
3919 mutex_lock(&rdev->sched_scan_mtx);
3920 err = __cfg80211_stop_sched_scan(rdev, false);
3921 mutex_unlock(&rdev->sched_scan_mtx);
3922
3923 return err;
3924 }
3925
3926 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3927 u32 seq, int flags,
3928 struct cfg80211_registered_device *rdev,
3929 struct wireless_dev *wdev,
3930 struct cfg80211_internal_bss *intbss)
3931 {
3932 struct cfg80211_bss *res = &intbss->pub;
3933 void *hdr;
3934 struct nlattr *bss;
3935 int i;
3936
3937 ASSERT_WDEV_LOCK(wdev);
3938
3939 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3940 NL80211_CMD_NEW_SCAN_RESULTS);
3941 if (!hdr)
3942 return -1;
3943
3944 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3945
3946 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3947 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3948
3949 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3950 if (!bss)
3951 goto nla_put_failure;
3952 if (!is_zero_ether_addr(res->bssid))
3953 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3954 if (res->information_elements && res->len_information_elements)
3955 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3956 res->len_information_elements,
3957 res->information_elements);
3958 if (res->beacon_ies && res->len_beacon_ies &&
3959 res->beacon_ies != res->information_elements)
3960 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3961 res->len_beacon_ies, res->beacon_ies);
3962 if (res->tsf)
3963 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3964 if (res->beacon_interval)
3965 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3966 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3967 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3968 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3969 jiffies_to_msecs(jiffies - intbss->ts));
3970
3971 switch (rdev->wiphy.signal_type) {
3972 case CFG80211_SIGNAL_TYPE_MBM:
3973 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3974 break;
3975 case CFG80211_SIGNAL_TYPE_UNSPEC:
3976 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3977 break;
3978 default:
3979 break;
3980 }
3981
3982 switch (wdev->iftype) {
3983 case NL80211_IFTYPE_P2P_CLIENT:
3984 case NL80211_IFTYPE_STATION:
3985 if (intbss == wdev->current_bss)
3986 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3987 NL80211_BSS_STATUS_ASSOCIATED);
3988 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3989 if (intbss != wdev->auth_bsses[i])
3990 continue;
3991 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3992 NL80211_BSS_STATUS_AUTHENTICATED);
3993 break;
3994 }
3995 break;
3996 case NL80211_IFTYPE_ADHOC:
3997 if (intbss == wdev->current_bss)
3998 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3999 NL80211_BSS_STATUS_IBSS_JOINED);
4000 break;
4001 default:
4002 break;
4003 }
4004
4005 nla_nest_end(msg, bss);
4006
4007 return genlmsg_end(msg, hdr);
4008
4009 nla_put_failure:
4010 genlmsg_cancel(msg, hdr);
4011 return -EMSGSIZE;
4012 }
4013
4014 static int nl80211_dump_scan(struct sk_buff *skb,
4015 struct netlink_callback *cb)
4016 {
4017 struct cfg80211_registered_device *rdev;
4018 struct net_device *dev;
4019 struct cfg80211_internal_bss *scan;
4020 struct wireless_dev *wdev;
4021 int start = cb->args[1], idx = 0;
4022 int err;
4023
4024 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4025 if (err)
4026 return err;
4027
4028 wdev = dev->ieee80211_ptr;
4029
4030 wdev_lock(wdev);
4031 spin_lock_bh(&rdev->bss_lock);
4032 cfg80211_bss_expire(rdev);
4033
4034 cb->seq = rdev->bss_generation;
4035
4036 list_for_each_entry(scan, &rdev->bss_list, list) {
4037 if (++idx <= start)
4038 continue;
4039 if (nl80211_send_bss(skb, cb,
4040 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4041 rdev, wdev, scan) < 0) {
4042 idx--;
4043 break;
4044 }
4045 }
4046
4047 spin_unlock_bh(&rdev->bss_lock);
4048 wdev_unlock(wdev);
4049
4050 cb->args[1] = idx;
4051 nl80211_finish_netdev_dump(rdev);
4052
4053 return skb->len;
4054 }
4055
4056 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4057 int flags, struct net_device *dev,
4058 struct survey_info *survey)
4059 {
4060 void *hdr;
4061 struct nlattr *infoattr;
4062
4063 hdr = nl80211hdr_put(msg, pid, seq, flags,
4064 NL80211_CMD_NEW_SURVEY_RESULTS);
4065 if (!hdr)
4066 return -ENOMEM;
4067
4068 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4069
4070 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4071 if (!infoattr)
4072 goto nla_put_failure;
4073
4074 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4075 survey->channel->center_freq);
4076 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4077 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4078 survey->noise);
4079 if (survey->filled & SURVEY_INFO_IN_USE)
4080 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4081 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4082 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4083 survey->channel_time);
4084 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4085 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4086 survey->channel_time_busy);
4087 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4088 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4089 survey->channel_time_ext_busy);
4090 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4091 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4092 survey->channel_time_rx);
4093 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4094 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4095 survey->channel_time_tx);
4096
4097 nla_nest_end(msg, infoattr);
4098
4099 return genlmsg_end(msg, hdr);
4100
4101 nla_put_failure:
4102 genlmsg_cancel(msg, hdr);
4103 return -EMSGSIZE;
4104 }
4105
4106 static int nl80211_dump_survey(struct sk_buff *skb,
4107 struct netlink_callback *cb)
4108 {
4109 struct survey_info survey;
4110 struct cfg80211_registered_device *dev;
4111 struct net_device *netdev;
4112 int survey_idx = cb->args[1];
4113 int res;
4114
4115 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4116 if (res)
4117 return res;
4118
4119 if (!dev->ops->dump_survey) {
4120 res = -EOPNOTSUPP;
4121 goto out_err;
4122 }
4123
4124 while (1) {
4125 struct ieee80211_channel *chan;
4126
4127 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4128 &survey);
4129 if (res == -ENOENT)
4130 break;
4131 if (res)
4132 goto out_err;
4133
4134 /* Survey without a channel doesn't make sense */
4135 if (!survey.channel) {
4136 res = -EINVAL;
4137 goto out;
4138 }
4139
4140 chan = ieee80211_get_channel(&dev->wiphy,
4141 survey.channel->center_freq);
4142 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4143 survey_idx++;
4144 continue;
4145 }
4146
4147 if (nl80211_send_survey(skb,
4148 NETLINK_CB(cb->skb).pid,
4149 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4150 netdev,
4151 &survey) < 0)
4152 goto out;
4153 survey_idx++;
4154 }
4155
4156 out:
4157 cb->args[1] = survey_idx;
4158 res = skb->len;
4159 out_err:
4160 nl80211_finish_netdev_dump(dev);
4161 return res;
4162 }
4163
4164 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4165 {
4166 return auth_type <= NL80211_AUTHTYPE_MAX;
4167 }
4168
4169 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4170 {
4171 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4172 NL80211_WPA_VERSION_2));
4173 }
4174
4175 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4176 {
4177 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4178 struct net_device *dev = info->user_ptr[1];
4179 struct ieee80211_channel *chan;
4180 const u8 *bssid, *ssid, *ie = NULL;
4181 int err, ssid_len, ie_len = 0;
4182 enum nl80211_auth_type auth_type;
4183 struct key_parse key;
4184 bool local_state_change;
4185
4186 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4187 return -EINVAL;
4188
4189 if (!info->attrs[NL80211_ATTR_MAC])
4190 return -EINVAL;
4191
4192 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4193 return -EINVAL;
4194
4195 if (!info->attrs[NL80211_ATTR_SSID])
4196 return -EINVAL;
4197
4198 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4199 return -EINVAL;
4200
4201 err = nl80211_parse_key(info, &key);
4202 if (err)
4203 return err;
4204
4205 if (key.idx >= 0) {
4206 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4207 return -EINVAL;
4208 if (!key.p.key || !key.p.key_len)
4209 return -EINVAL;
4210 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4211 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4212 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4213 key.p.key_len != WLAN_KEY_LEN_WEP104))
4214 return -EINVAL;
4215 if (key.idx > 4)
4216 return -EINVAL;
4217 } else {
4218 key.p.key_len = 0;
4219 key.p.key = NULL;
4220 }
4221
4222 if (key.idx >= 0) {
4223 int i;
4224 bool ok = false;
4225 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4226 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4227 ok = true;
4228 break;
4229 }
4230 }
4231 if (!ok)
4232 return -EINVAL;
4233 }
4234
4235 if (!rdev->ops->auth)
4236 return -EOPNOTSUPP;
4237
4238 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4239 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4240 return -EOPNOTSUPP;
4241
4242 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4243 chan = ieee80211_get_channel(&rdev->wiphy,
4244 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4245 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4246 return -EINVAL;
4247
4248 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4249 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4250
4251 if (info->attrs[NL80211_ATTR_IE]) {
4252 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4253 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4254 }
4255
4256 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4257 if (!nl80211_valid_auth_type(auth_type))
4258 return -EINVAL;
4259
4260 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4261
4262 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4263 ssid, ssid_len, ie, ie_len,
4264 key.p.key, key.p.key_len, key.idx,
4265 local_state_change);
4266 }
4267
4268 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4269 struct genl_info *info,
4270 struct cfg80211_crypto_settings *settings,
4271 int cipher_limit)
4272 {
4273 memset(settings, 0, sizeof(*settings));
4274
4275 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4276
4277 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4278 u16 proto;
4279 proto = nla_get_u16(
4280 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4281 settings->control_port_ethertype = cpu_to_be16(proto);
4282 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4283 proto != ETH_P_PAE)
4284 return -EINVAL;
4285 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4286 settings->control_port_no_encrypt = true;
4287 } else
4288 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4289
4290 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4291 void *data;
4292 int len, i;
4293
4294 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4295 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4296 settings->n_ciphers_pairwise = len / sizeof(u32);
4297
4298 if (len % sizeof(u32))
4299 return -EINVAL;
4300
4301 if (settings->n_ciphers_pairwise > cipher_limit)
4302 return -EINVAL;
4303
4304 memcpy(settings->ciphers_pairwise, data, len);
4305
4306 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4307 if (!cfg80211_supported_cipher_suite(
4308 &rdev->wiphy,
4309 settings->ciphers_pairwise[i]))
4310 return -EINVAL;
4311 }
4312
4313 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4314 settings->cipher_group =
4315 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4316 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4317 settings->cipher_group))
4318 return -EINVAL;
4319 }
4320
4321 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4322 settings->wpa_versions =
4323 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4324 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4325 return -EINVAL;
4326 }
4327
4328 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4329 void *data;
4330 int len;
4331
4332 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4333 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4334 settings->n_akm_suites = len / sizeof(u32);
4335
4336 if (len % sizeof(u32))
4337 return -EINVAL;
4338
4339 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4340 return -EINVAL;
4341
4342 memcpy(settings->akm_suites, data, len);
4343 }
4344
4345 return 0;
4346 }
4347
4348 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4349 {
4350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4351 struct net_device *dev = info->user_ptr[1];
4352 struct cfg80211_crypto_settings crypto;
4353 struct ieee80211_channel *chan;
4354 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4355 int err, ssid_len, ie_len = 0;
4356 bool use_mfp = false;
4357
4358 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4359 return -EINVAL;
4360
4361 if (!info->attrs[NL80211_ATTR_MAC] ||
4362 !info->attrs[NL80211_ATTR_SSID] ||
4363 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4364 return -EINVAL;
4365
4366 if (!rdev->ops->assoc)
4367 return -EOPNOTSUPP;
4368
4369 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4370 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4371 return -EOPNOTSUPP;
4372
4373 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4374
4375 chan = ieee80211_get_channel(&rdev->wiphy,
4376 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4377 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4378 return -EINVAL;
4379
4380 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4381 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4382
4383 if (info->attrs[NL80211_ATTR_IE]) {
4384 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4385 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4386 }
4387
4388 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4389 enum nl80211_mfp mfp =
4390 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4391 if (mfp == NL80211_MFP_REQUIRED)
4392 use_mfp = true;
4393 else if (mfp != NL80211_MFP_NO)
4394 return -EINVAL;
4395 }
4396
4397 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4398 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4399
4400 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4401 if (!err)
4402 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4403 ssid, ssid_len, ie, ie_len, use_mfp,
4404 &crypto);
4405
4406 return err;
4407 }
4408
4409 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4410 {
4411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4412 struct net_device *dev = info->user_ptr[1];
4413 const u8 *ie = NULL, *bssid;
4414 int ie_len = 0;
4415 u16 reason_code;
4416 bool local_state_change;
4417
4418 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4419 return -EINVAL;
4420
4421 if (!info->attrs[NL80211_ATTR_MAC])
4422 return -EINVAL;
4423
4424 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4425 return -EINVAL;
4426
4427 if (!rdev->ops->deauth)
4428 return -EOPNOTSUPP;
4429
4430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4432 return -EOPNOTSUPP;
4433
4434 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4435
4436 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4437 if (reason_code == 0) {
4438 /* Reason Code 0 is reserved */
4439 return -EINVAL;
4440 }
4441
4442 if (info->attrs[NL80211_ATTR_IE]) {
4443 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4444 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4445 }
4446
4447 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4448
4449 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4450 local_state_change);
4451 }
4452
4453 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4454 {
4455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4456 struct net_device *dev = info->user_ptr[1];
4457 const u8 *ie = NULL, *bssid;
4458 int ie_len = 0;
4459 u16 reason_code;
4460 bool local_state_change;
4461
4462 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4463 return -EINVAL;
4464
4465 if (!info->attrs[NL80211_ATTR_MAC])
4466 return -EINVAL;
4467
4468 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4469 return -EINVAL;
4470
4471 if (!rdev->ops->disassoc)
4472 return -EOPNOTSUPP;
4473
4474 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4475 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4476 return -EOPNOTSUPP;
4477
4478 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4479
4480 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4481 if (reason_code == 0) {
4482 /* Reason Code 0 is reserved */
4483 return -EINVAL;
4484 }
4485
4486 if (info->attrs[NL80211_ATTR_IE]) {
4487 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4488 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4489 }
4490
4491 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4492
4493 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4494 local_state_change);
4495 }
4496
4497 static bool
4498 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4499 int mcast_rate[IEEE80211_NUM_BANDS],
4500 int rateval)
4501 {
4502 struct wiphy *wiphy = &rdev->wiphy;
4503 bool found = false;
4504 int band, i;
4505
4506 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4507 struct ieee80211_supported_band *sband;
4508
4509 sband = wiphy->bands[band];
4510 if (!sband)
4511 continue;
4512
4513 for (i = 0; i < sband->n_bitrates; i++) {
4514 if (sband->bitrates[i].bitrate == rateval) {
4515 mcast_rate[band] = i + 1;
4516 found = true;
4517 break;
4518 }
4519 }
4520 }
4521
4522 return found;
4523 }
4524
4525 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4526 {
4527 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4528 struct net_device *dev = info->user_ptr[1];
4529 struct cfg80211_ibss_params ibss;
4530 struct wiphy *wiphy;
4531 struct cfg80211_cached_keys *connkeys = NULL;
4532 int err;
4533
4534 memset(&ibss, 0, sizeof(ibss));
4535
4536 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4537 return -EINVAL;
4538
4539 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4540 !info->attrs[NL80211_ATTR_SSID] ||
4541 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4542 return -EINVAL;
4543
4544 ibss.beacon_interval = 100;
4545
4546 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4547 ibss.beacon_interval =
4548 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4549 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4550 return -EINVAL;
4551 }
4552
4553 if (!rdev->ops->join_ibss)
4554 return -EOPNOTSUPP;
4555
4556 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4557 return -EOPNOTSUPP;
4558
4559 wiphy = &rdev->wiphy;
4560
4561 if (info->attrs[NL80211_ATTR_MAC]) {
4562 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4563
4564 if (!is_valid_ether_addr(ibss.bssid))
4565 return -EINVAL;
4566 }
4567 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4568 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4569
4570 if (info->attrs[NL80211_ATTR_IE]) {
4571 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4572 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4573 }
4574
4575 ibss.channel = ieee80211_get_channel(wiphy,
4576 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4577 if (!ibss.channel ||
4578 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4579 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4580 return -EINVAL;
4581
4582 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4583 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4584
4585 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4586 u8 *rates =
4587 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4588 int n_rates =
4589 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4590 struct ieee80211_supported_band *sband =
4591 wiphy->bands[ibss.channel->band];
4592 int err;
4593
4594 err = ieee80211_get_ratemask(sband, rates, n_rates,
4595 &ibss.basic_rates);
4596 if (err)
4597 return err;
4598 }
4599
4600 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4601 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4602 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4603 return -EINVAL;
4604
4605 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4606 connkeys = nl80211_parse_connkeys(rdev,
4607 info->attrs[NL80211_ATTR_KEYS]);
4608 if (IS_ERR(connkeys))
4609 return PTR_ERR(connkeys);
4610 }
4611
4612 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4613 if (err)
4614 kfree(connkeys);
4615 return err;
4616 }
4617
4618 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4619 {
4620 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4621 struct net_device *dev = info->user_ptr[1];
4622
4623 if (!rdev->ops->leave_ibss)
4624 return -EOPNOTSUPP;
4625
4626 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4627 return -EOPNOTSUPP;
4628
4629 return cfg80211_leave_ibss(rdev, dev, false);
4630 }
4631
4632 #ifdef CONFIG_NL80211_TESTMODE
4633 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4634 .name = "testmode",
4635 };
4636
4637 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4638 {
4639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4640 int err;
4641
4642 if (!info->attrs[NL80211_ATTR_TESTDATA])
4643 return -EINVAL;
4644
4645 err = -EOPNOTSUPP;
4646 if (rdev->ops->testmode_cmd) {
4647 rdev->testmode_info = info;
4648 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4649 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4650 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4651 rdev->testmode_info = NULL;
4652 }
4653
4654 return err;
4655 }
4656
4657 static int nl80211_testmode_dump(struct sk_buff *skb,
4658 struct netlink_callback *cb)
4659 {
4660 struct cfg80211_registered_device *dev;
4661 int err;
4662 long phy_idx;
4663 void *data = NULL;
4664 int data_len = 0;
4665
4666 if (cb->args[0]) {
4667 /*
4668 * 0 is a valid index, but not valid for args[0],
4669 * so we need to offset by 1.
4670 */
4671 phy_idx = cb->args[0] - 1;
4672 } else {
4673 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4674 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4675 nl80211_policy);
4676 if (err)
4677 return err;
4678 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4679 return -EINVAL;
4680 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4681 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4682 cb->args[1] =
4683 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4684 }
4685
4686 if (cb->args[1]) {
4687 data = nla_data((void *)cb->args[1]);
4688 data_len = nla_len((void *)cb->args[1]);
4689 }
4690
4691 mutex_lock(&cfg80211_mutex);
4692 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4693 if (!dev) {
4694 mutex_unlock(&cfg80211_mutex);
4695 return -ENOENT;
4696 }
4697 cfg80211_lock_rdev(dev);
4698 mutex_unlock(&cfg80211_mutex);
4699
4700 if (!dev->ops->testmode_dump) {
4701 err = -EOPNOTSUPP;
4702 goto out_err;
4703 }
4704
4705 while (1) {
4706 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4707 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4708 NL80211_CMD_TESTMODE);
4709 struct nlattr *tmdata;
4710
4711 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4712 genlmsg_cancel(skb, hdr);
4713 break;
4714 }
4715
4716 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4717 if (!tmdata) {
4718 genlmsg_cancel(skb, hdr);
4719 break;
4720 }
4721 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4722 data, data_len);
4723 nla_nest_end(skb, tmdata);
4724
4725 if (err == -ENOBUFS || err == -ENOENT) {
4726 genlmsg_cancel(skb, hdr);
4727 break;
4728 } else if (err) {
4729 genlmsg_cancel(skb, hdr);
4730 goto out_err;
4731 }
4732
4733 genlmsg_end(skb, hdr);
4734 }
4735
4736 err = skb->len;
4737 /* see above */
4738 cb->args[0] = phy_idx + 1;
4739 out_err:
4740 cfg80211_unlock_rdev(dev);
4741 return err;
4742 }
4743
4744 static struct sk_buff *
4745 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4746 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4747 {
4748 struct sk_buff *skb;
4749 void *hdr;
4750 struct nlattr *data;
4751
4752 skb = nlmsg_new(approxlen + 100, gfp);
4753 if (!skb)
4754 return NULL;
4755
4756 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4757 if (!hdr) {
4758 kfree_skb(skb);
4759 return NULL;
4760 }
4761
4762 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4763 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4764
4765 ((void **)skb->cb)[0] = rdev;
4766 ((void **)skb->cb)[1] = hdr;
4767 ((void **)skb->cb)[2] = data;
4768
4769 return skb;
4770
4771 nla_put_failure:
4772 kfree_skb(skb);
4773 return NULL;
4774 }
4775
4776 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4777 int approxlen)
4778 {
4779 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4780
4781 if (WARN_ON(!rdev->testmode_info))
4782 return NULL;
4783
4784 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4785 rdev->testmode_info->snd_pid,
4786 rdev->testmode_info->snd_seq,
4787 GFP_KERNEL);
4788 }
4789 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4790
4791 int cfg80211_testmode_reply(struct sk_buff *skb)
4792 {
4793 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4794 void *hdr = ((void **)skb->cb)[1];
4795 struct nlattr *data = ((void **)skb->cb)[2];
4796
4797 if (WARN_ON(!rdev->testmode_info)) {
4798 kfree_skb(skb);
4799 return -EINVAL;
4800 }
4801
4802 nla_nest_end(skb, data);
4803 genlmsg_end(skb, hdr);
4804 return genlmsg_reply(skb, rdev->testmode_info);
4805 }
4806 EXPORT_SYMBOL(cfg80211_testmode_reply);
4807
4808 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4809 int approxlen, gfp_t gfp)
4810 {
4811 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4812
4813 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4814 }
4815 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4816
4817 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4818 {
4819 void *hdr = ((void **)skb->cb)[1];
4820 struct nlattr *data = ((void **)skb->cb)[2];
4821
4822 nla_nest_end(skb, data);
4823 genlmsg_end(skb, hdr);
4824 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4825 }
4826 EXPORT_SYMBOL(cfg80211_testmode_event);
4827 #endif
4828
4829 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4830 {
4831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4832 struct net_device *dev = info->user_ptr[1];
4833 struct cfg80211_connect_params connect;
4834 struct wiphy *wiphy;
4835 struct cfg80211_cached_keys *connkeys = NULL;
4836 int err;
4837
4838 memset(&connect, 0, sizeof(connect));
4839
4840 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4841 return -EINVAL;
4842
4843 if (!info->attrs[NL80211_ATTR_SSID] ||
4844 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4845 return -EINVAL;
4846
4847 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4848 connect.auth_type =
4849 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4850 if (!nl80211_valid_auth_type(connect.auth_type))
4851 return -EINVAL;
4852 } else
4853 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4854
4855 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4856
4857 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4858 NL80211_MAX_NR_CIPHER_SUITES);
4859 if (err)
4860 return err;
4861
4862 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4863 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4864 return -EOPNOTSUPP;
4865
4866 wiphy = &rdev->wiphy;
4867
4868 if (info->attrs[NL80211_ATTR_MAC])
4869 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4870 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4871 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4872
4873 if (info->attrs[NL80211_ATTR_IE]) {
4874 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4875 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4876 }
4877
4878 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4879 connect.channel =
4880 ieee80211_get_channel(wiphy,
4881 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4882 if (!connect.channel ||
4883 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4884 return -EINVAL;
4885 }
4886
4887 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4888 connkeys = nl80211_parse_connkeys(rdev,
4889 info->attrs[NL80211_ATTR_KEYS]);
4890 if (IS_ERR(connkeys))
4891 return PTR_ERR(connkeys);
4892 }
4893
4894 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4895 if (err)
4896 kfree(connkeys);
4897 return err;
4898 }
4899
4900 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4901 {
4902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4903 struct net_device *dev = info->user_ptr[1];
4904 u16 reason;
4905
4906 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4907 reason = WLAN_REASON_DEAUTH_LEAVING;
4908 else
4909 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4910
4911 if (reason == 0)
4912 return -EINVAL;
4913
4914 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4915 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4916 return -EOPNOTSUPP;
4917
4918 return cfg80211_disconnect(rdev, dev, reason, true);
4919 }
4920
4921 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4922 {
4923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4924 struct net *net;
4925 int err;
4926 u32 pid;
4927
4928 if (!info->attrs[NL80211_ATTR_PID])
4929 return -EINVAL;
4930
4931 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4932
4933 net = get_net_ns_by_pid(pid);
4934 if (IS_ERR(net))
4935 return PTR_ERR(net);
4936
4937 err = 0;
4938
4939 /* check if anything to do */
4940 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4941 err = cfg80211_switch_netns(rdev, net);
4942
4943 put_net(net);
4944 return err;
4945 }
4946
4947 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4948 {
4949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4950 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4951 struct cfg80211_pmksa *pmksa) = NULL;
4952 struct net_device *dev = info->user_ptr[1];
4953 struct cfg80211_pmksa pmksa;
4954
4955 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4956
4957 if (!info->attrs[NL80211_ATTR_MAC])
4958 return -EINVAL;
4959
4960 if (!info->attrs[NL80211_ATTR_PMKID])
4961 return -EINVAL;
4962
4963 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4964 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4965
4966 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4967 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4968 return -EOPNOTSUPP;
4969
4970 switch (info->genlhdr->cmd) {
4971 case NL80211_CMD_SET_PMKSA:
4972 rdev_ops = rdev->ops->set_pmksa;
4973 break;
4974 case NL80211_CMD_DEL_PMKSA:
4975 rdev_ops = rdev->ops->del_pmksa;
4976 break;
4977 default:
4978 WARN_ON(1);
4979 break;
4980 }
4981
4982 if (!rdev_ops)
4983 return -EOPNOTSUPP;
4984
4985 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4986 }
4987
4988 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4989 {
4990 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4991 struct net_device *dev = info->user_ptr[1];
4992
4993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4994 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4995 return -EOPNOTSUPP;
4996
4997 if (!rdev->ops->flush_pmksa)
4998 return -EOPNOTSUPP;
4999
5000 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5001 }
5002
5003 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5004 {
5005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5006 struct net_device *dev = info->user_ptr[1];
5007 u8 action_code, dialog_token;
5008 u16 status_code;
5009 u8 *peer;
5010
5011 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5012 !rdev->ops->tdls_mgmt)
5013 return -EOPNOTSUPP;
5014
5015 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5016 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5017 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5018 !info->attrs[NL80211_ATTR_IE] ||
5019 !info->attrs[NL80211_ATTR_MAC])
5020 return -EINVAL;
5021
5022 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5023 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5024 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5025 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5026
5027 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5028 dialog_token, status_code,
5029 nla_data(info->attrs[NL80211_ATTR_IE]),
5030 nla_len(info->attrs[NL80211_ATTR_IE]));
5031 }
5032
5033 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5034 {
5035 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5036 struct net_device *dev = info->user_ptr[1];
5037 enum nl80211_tdls_operation operation;
5038 u8 *peer;
5039
5040 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5041 !rdev->ops->tdls_oper)
5042 return -EOPNOTSUPP;
5043
5044 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5045 !info->attrs[NL80211_ATTR_MAC])
5046 return -EINVAL;
5047
5048 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5049 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5050
5051 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5052 }
5053
5054 static int nl80211_remain_on_channel(struct sk_buff *skb,
5055 struct genl_info *info)
5056 {
5057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058 struct net_device *dev = info->user_ptr[1];
5059 struct ieee80211_channel *chan;
5060 struct sk_buff *msg;
5061 void *hdr;
5062 u64 cookie;
5063 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5064 u32 freq, duration;
5065 int err;
5066
5067 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5068 !info->attrs[NL80211_ATTR_DURATION])
5069 return -EINVAL;
5070
5071 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5072
5073 /*
5074 * We should be on that channel for at least one jiffie,
5075 * and more than 5 seconds seems excessive.
5076 */
5077 if (!duration || !msecs_to_jiffies(duration) ||
5078 duration > rdev->wiphy.max_remain_on_channel_duration)
5079 return -EINVAL;
5080
5081 if (!rdev->ops->remain_on_channel)
5082 return -EOPNOTSUPP;
5083
5084 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5085 channel_type = nla_get_u32(
5086 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5087 if (channel_type != NL80211_CHAN_NO_HT &&
5088 channel_type != NL80211_CHAN_HT20 &&
5089 channel_type != NL80211_CHAN_HT40PLUS &&
5090 channel_type != NL80211_CHAN_HT40MINUS)
5091 return -EINVAL;
5092 }
5093
5094 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5095 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5096 if (chan == NULL)
5097 return -EINVAL;
5098
5099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5100 if (!msg)
5101 return -ENOMEM;
5102
5103 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5104 NL80211_CMD_REMAIN_ON_CHANNEL);
5105
5106 if (IS_ERR(hdr)) {
5107 err = PTR_ERR(hdr);
5108 goto free_msg;
5109 }
5110
5111 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5112 channel_type, duration, &cookie);
5113
5114 if (err)
5115 goto free_msg;
5116
5117 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5118
5119 genlmsg_end(msg, hdr);
5120
5121 return genlmsg_reply(msg, info);
5122
5123 nla_put_failure:
5124 err = -ENOBUFS;
5125 free_msg:
5126 nlmsg_free(msg);
5127 return err;
5128 }
5129
5130 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5131 struct genl_info *info)
5132 {
5133 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5134 struct net_device *dev = info->user_ptr[1];
5135 u64 cookie;
5136
5137 if (!info->attrs[NL80211_ATTR_COOKIE])
5138 return -EINVAL;
5139
5140 if (!rdev->ops->cancel_remain_on_channel)
5141 return -EOPNOTSUPP;
5142
5143 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5144
5145 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5146 }
5147
5148 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5149 u8 *rates, u8 rates_len)
5150 {
5151 u8 i;
5152 u32 mask = 0;
5153
5154 for (i = 0; i < rates_len; i++) {
5155 int rate = (rates[i] & 0x7f) * 5;
5156 int ridx;
5157 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5158 struct ieee80211_rate *srate =
5159 &sband->bitrates[ridx];
5160 if (rate == srate->bitrate) {
5161 mask |= 1 << ridx;
5162 break;
5163 }
5164 }
5165 if (ridx == sband->n_bitrates)
5166 return 0; /* rate not found */
5167 }
5168
5169 return mask;
5170 }
5171
5172 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5173 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5174 .len = NL80211_MAX_SUPP_RATES },
5175 };
5176
5177 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5178 struct genl_info *info)
5179 {
5180 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5182 struct cfg80211_bitrate_mask mask;
5183 int rem, i;
5184 struct net_device *dev = info->user_ptr[1];
5185 struct nlattr *tx_rates;
5186 struct ieee80211_supported_band *sband;
5187
5188 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5189 return -EINVAL;
5190
5191 if (!rdev->ops->set_bitrate_mask)
5192 return -EOPNOTSUPP;
5193
5194 memset(&mask, 0, sizeof(mask));
5195 /* Default to all rates enabled */
5196 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5197 sband = rdev->wiphy.bands[i];
5198 mask.control[i].legacy =
5199 sband ? (1 << sband->n_bitrates) - 1 : 0;
5200 }
5201
5202 /*
5203 * The nested attribute uses enum nl80211_band as the index. This maps
5204 * directly to the enum ieee80211_band values used in cfg80211.
5205 */
5206 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5207 {
5208 enum ieee80211_band band = nla_type(tx_rates);
5209 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5210 return -EINVAL;
5211 sband = rdev->wiphy.bands[band];
5212 if (sband == NULL)
5213 return -EINVAL;
5214 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5215 nla_len(tx_rates), nl80211_txattr_policy);
5216 if (tb[NL80211_TXRATE_LEGACY]) {
5217 mask.control[band].legacy = rateset_to_mask(
5218 sband,
5219 nla_data(tb[NL80211_TXRATE_LEGACY]),
5220 nla_len(tb[NL80211_TXRATE_LEGACY]));
5221 if (mask.control[band].legacy == 0)
5222 return -EINVAL;
5223 }
5224 }
5225
5226 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5227 }
5228
5229 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5230 {
5231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5232 struct net_device *dev = info->user_ptr[1];
5233 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5234
5235 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5236 return -EINVAL;
5237
5238 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5239 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5240
5241 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5242 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5243 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5244 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5246 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5247 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5248 return -EOPNOTSUPP;
5249
5250 /* not much point in registering if we can't reply */
5251 if (!rdev->ops->mgmt_tx)
5252 return -EOPNOTSUPP;
5253
5254 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5255 frame_type,
5256 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5257 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5258 }
5259
5260 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5261 {
5262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5263 struct net_device *dev = info->user_ptr[1];
5264 struct ieee80211_channel *chan;
5265 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5266 bool channel_type_valid = false;
5267 u32 freq;
5268 int err;
5269 void *hdr;
5270 u64 cookie;
5271 struct sk_buff *msg;
5272 unsigned int wait = 0;
5273 bool offchan;
5274 bool no_cck;
5275
5276 if (!info->attrs[NL80211_ATTR_FRAME] ||
5277 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5278 return -EINVAL;
5279
5280 if (!rdev->ops->mgmt_tx)
5281 return -EOPNOTSUPP;
5282
5283 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5284 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5285 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5289 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5290 return -EOPNOTSUPP;
5291
5292 if (info->attrs[NL80211_ATTR_DURATION]) {
5293 if (!rdev->ops->mgmt_tx_cancel_wait)
5294 return -EINVAL;
5295 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5296 }
5297
5298 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5299 channel_type = nla_get_u32(
5300 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5301 if (channel_type != NL80211_CHAN_NO_HT &&
5302 channel_type != NL80211_CHAN_HT20 &&
5303 channel_type != NL80211_CHAN_HT40PLUS &&
5304 channel_type != NL80211_CHAN_HT40MINUS)
5305 return -EINVAL;
5306 channel_type_valid = true;
5307 }
5308
5309 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5310
5311 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5312
5313 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5314 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5315 if (chan == NULL)
5316 return -EINVAL;
5317
5318 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5319 if (!msg)
5320 return -ENOMEM;
5321
5322 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5323 NL80211_CMD_FRAME);
5324
5325 if (IS_ERR(hdr)) {
5326 err = PTR_ERR(hdr);
5327 goto free_msg;
5328 }
5329 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5330 channel_type_valid, wait,
5331 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5332 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5333 no_cck, &cookie);
5334 if (err)
5335 goto free_msg;
5336
5337 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5338
5339 genlmsg_end(msg, hdr);
5340 return genlmsg_reply(msg, info);
5341
5342 nla_put_failure:
5343 err = -ENOBUFS;
5344 free_msg:
5345 nlmsg_free(msg);
5346 return err;
5347 }
5348
5349 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5350 {
5351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5352 struct net_device *dev = info->user_ptr[1];
5353 u64 cookie;
5354
5355 if (!info->attrs[NL80211_ATTR_COOKIE])
5356 return -EINVAL;
5357
5358 if (!rdev->ops->mgmt_tx_cancel_wait)
5359 return -EOPNOTSUPP;
5360
5361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5363 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5364 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5365 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5366 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5367 return -EOPNOTSUPP;
5368
5369 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5370
5371 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5372 }
5373
5374 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5375 {
5376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5377 struct wireless_dev *wdev;
5378 struct net_device *dev = info->user_ptr[1];
5379 u8 ps_state;
5380 bool state;
5381 int err;
5382
5383 if (!info->attrs[NL80211_ATTR_PS_STATE])
5384 return -EINVAL;
5385
5386 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5387
5388 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5389 return -EINVAL;
5390
5391 wdev = dev->ieee80211_ptr;
5392
5393 if (!rdev->ops->set_power_mgmt)
5394 return -EOPNOTSUPP;
5395
5396 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5397
5398 if (state == wdev->ps)
5399 return 0;
5400
5401 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5402 wdev->ps_timeout);
5403 if (!err)
5404 wdev->ps = state;
5405 return err;
5406 }
5407
5408 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5409 {
5410 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5411 enum nl80211_ps_state ps_state;
5412 struct wireless_dev *wdev;
5413 struct net_device *dev = info->user_ptr[1];
5414 struct sk_buff *msg;
5415 void *hdr;
5416 int err;
5417
5418 wdev = dev->ieee80211_ptr;
5419
5420 if (!rdev->ops->set_power_mgmt)
5421 return -EOPNOTSUPP;
5422
5423 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5424 if (!msg)
5425 return -ENOMEM;
5426
5427 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5428 NL80211_CMD_GET_POWER_SAVE);
5429 if (!hdr) {
5430 err = -ENOBUFS;
5431 goto free_msg;
5432 }
5433
5434 if (wdev->ps)
5435 ps_state = NL80211_PS_ENABLED;
5436 else
5437 ps_state = NL80211_PS_DISABLED;
5438
5439 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5440
5441 genlmsg_end(msg, hdr);
5442 return genlmsg_reply(msg, info);
5443
5444 nla_put_failure:
5445 err = -ENOBUFS;
5446 free_msg:
5447 nlmsg_free(msg);
5448 return err;
5449 }
5450
5451 static struct nla_policy
5452 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5453 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5454 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5455 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5456 };
5457
5458 static int nl80211_set_cqm_rssi(struct genl_info *info,
5459 s32 threshold, u32 hysteresis)
5460 {
5461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5462 struct wireless_dev *wdev;
5463 struct net_device *dev = info->user_ptr[1];
5464
5465 if (threshold > 0)
5466 return -EINVAL;
5467
5468 wdev = dev->ieee80211_ptr;
5469
5470 if (!rdev->ops->set_cqm_rssi_config)
5471 return -EOPNOTSUPP;
5472
5473 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5474 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5475 return -EOPNOTSUPP;
5476
5477 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5478 threshold, hysteresis);
5479 }
5480
5481 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5482 {
5483 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5484 struct nlattr *cqm;
5485 int err;
5486
5487 cqm = info->attrs[NL80211_ATTR_CQM];
5488 if (!cqm) {
5489 err = -EINVAL;
5490 goto out;
5491 }
5492
5493 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5494 nl80211_attr_cqm_policy);
5495 if (err)
5496 goto out;
5497
5498 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5499 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5500 s32 threshold;
5501 u32 hysteresis;
5502 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5503 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5504 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5505 } else
5506 err = -EINVAL;
5507
5508 out:
5509 return err;
5510 }
5511
5512 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5513 {
5514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5515 struct net_device *dev = info->user_ptr[1];
5516 struct mesh_config cfg;
5517 struct mesh_setup setup;
5518 int err;
5519
5520 /* start with default */
5521 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5522 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5523
5524 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5525 /* and parse parameters if given */
5526 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5527 if (err)
5528 return err;
5529 }
5530
5531 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5532 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5533 return -EINVAL;
5534
5535 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5536 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5537
5538 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5539 /* parse additional setup parameters if given */
5540 err = nl80211_parse_mesh_setup(info, &setup);
5541 if (err)
5542 return err;
5543 }
5544
5545 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5546 }
5547
5548 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5549 {
5550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5551 struct net_device *dev = info->user_ptr[1];
5552
5553 return cfg80211_leave_mesh(rdev, dev);
5554 }
5555
5556 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5557 {
5558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5559 struct sk_buff *msg;
5560 void *hdr;
5561
5562 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5563 return -EOPNOTSUPP;
5564
5565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5566 if (!msg)
5567 return -ENOMEM;
5568
5569 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5570 NL80211_CMD_GET_WOWLAN);
5571 if (!hdr)
5572 goto nla_put_failure;
5573
5574 if (rdev->wowlan) {
5575 struct nlattr *nl_wowlan;
5576
5577 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5578 if (!nl_wowlan)
5579 goto nla_put_failure;
5580
5581 if (rdev->wowlan->any)
5582 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5583 if (rdev->wowlan->disconnect)
5584 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5585 if (rdev->wowlan->magic_pkt)
5586 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5587 if (rdev->wowlan->gtk_rekey_failure)
5588 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5589 if (rdev->wowlan->eap_identity_req)
5590 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5591 if (rdev->wowlan->four_way_handshake)
5592 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5593 if (rdev->wowlan->rfkill_release)
5594 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5595 if (rdev->wowlan->n_patterns) {
5596 struct nlattr *nl_pats, *nl_pat;
5597 int i, pat_len;
5598
5599 nl_pats = nla_nest_start(msg,
5600 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5601 if (!nl_pats)
5602 goto nla_put_failure;
5603
5604 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5605 nl_pat = nla_nest_start(msg, i + 1);
5606 if (!nl_pat)
5607 goto nla_put_failure;
5608 pat_len = rdev->wowlan->patterns[i].pattern_len;
5609 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5610 DIV_ROUND_UP(pat_len, 8),
5611 rdev->wowlan->patterns[i].mask);
5612 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5613 pat_len,
5614 rdev->wowlan->patterns[i].pattern);
5615 nla_nest_end(msg, nl_pat);
5616 }
5617 nla_nest_end(msg, nl_pats);
5618 }
5619
5620 nla_nest_end(msg, nl_wowlan);
5621 }
5622
5623 genlmsg_end(msg, hdr);
5624 return genlmsg_reply(msg, info);
5625
5626 nla_put_failure:
5627 nlmsg_free(msg);
5628 return -ENOBUFS;
5629 }
5630
5631 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5632 {
5633 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5634 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5635 struct cfg80211_wowlan no_triggers = {};
5636 struct cfg80211_wowlan new_triggers = {};
5637 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5638 int err, i;
5639
5640 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5641 return -EOPNOTSUPP;
5642
5643 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5644 goto no_triggers;
5645
5646 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5647 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5648 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5649 nl80211_wowlan_policy);
5650 if (err)
5651 return err;
5652
5653 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5654 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5655 return -EINVAL;
5656 new_triggers.any = true;
5657 }
5658
5659 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5660 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5661 return -EINVAL;
5662 new_triggers.disconnect = true;
5663 }
5664
5665 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5666 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5667 return -EINVAL;
5668 new_triggers.magic_pkt = true;
5669 }
5670
5671 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5672 return -EINVAL;
5673
5674 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5675 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5676 return -EINVAL;
5677 new_triggers.gtk_rekey_failure = true;
5678 }
5679
5680 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5681 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5682 return -EINVAL;
5683 new_triggers.eap_identity_req = true;
5684 }
5685
5686 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5687 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5688 return -EINVAL;
5689 new_triggers.four_way_handshake = true;
5690 }
5691
5692 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5693 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5694 return -EINVAL;
5695 new_triggers.rfkill_release = true;
5696 }
5697
5698 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5699 struct nlattr *pat;
5700 int n_patterns = 0;
5701 int rem, pat_len, mask_len;
5702 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5703
5704 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5705 rem)
5706 n_patterns++;
5707 if (n_patterns > wowlan->n_patterns)
5708 return -EINVAL;
5709
5710 new_triggers.patterns = kcalloc(n_patterns,
5711 sizeof(new_triggers.patterns[0]),
5712 GFP_KERNEL);
5713 if (!new_triggers.patterns)
5714 return -ENOMEM;
5715
5716 new_triggers.n_patterns = n_patterns;
5717 i = 0;
5718
5719 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5720 rem) {
5721 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5722 nla_data(pat), nla_len(pat), NULL);
5723 err = -EINVAL;
5724 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5725 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5726 goto error;
5727 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5728 mask_len = DIV_ROUND_UP(pat_len, 8);
5729 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5730 mask_len)
5731 goto error;
5732 if (pat_len > wowlan->pattern_max_len ||
5733 pat_len < wowlan->pattern_min_len)
5734 goto error;
5735
5736 new_triggers.patterns[i].mask =
5737 kmalloc(mask_len + pat_len, GFP_KERNEL);
5738 if (!new_triggers.patterns[i].mask) {
5739 err = -ENOMEM;
5740 goto error;
5741 }
5742 new_triggers.patterns[i].pattern =
5743 new_triggers.patterns[i].mask + mask_len;
5744 memcpy(new_triggers.patterns[i].mask,
5745 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5746 mask_len);
5747 new_triggers.patterns[i].pattern_len = pat_len;
5748 memcpy(new_triggers.patterns[i].pattern,
5749 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5750 pat_len);
5751 i++;
5752 }
5753 }
5754
5755 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5756 struct cfg80211_wowlan *ntrig;
5757 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5758 GFP_KERNEL);
5759 if (!ntrig) {
5760 err = -ENOMEM;
5761 goto error;
5762 }
5763 cfg80211_rdev_free_wowlan(rdev);
5764 rdev->wowlan = ntrig;
5765 } else {
5766 no_triggers:
5767 cfg80211_rdev_free_wowlan(rdev);
5768 rdev->wowlan = NULL;
5769 }
5770
5771 return 0;
5772 error:
5773 for (i = 0; i < new_triggers.n_patterns; i++)
5774 kfree(new_triggers.patterns[i].mask);
5775 kfree(new_triggers.patterns);
5776 return err;
5777 }
5778
5779 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5780 {
5781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5782 struct net_device *dev = info->user_ptr[1];
5783 struct wireless_dev *wdev = dev->ieee80211_ptr;
5784 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5785 struct cfg80211_gtk_rekey_data rekey_data;
5786 int err;
5787
5788 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5789 return -EINVAL;
5790
5791 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5792 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5793 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5794 nl80211_rekey_policy);
5795 if (err)
5796 return err;
5797
5798 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5799 return -ERANGE;
5800 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5801 return -ERANGE;
5802 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5803 return -ERANGE;
5804
5805 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5806 NL80211_KEK_LEN);
5807 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5808 NL80211_KCK_LEN);
5809 memcpy(rekey_data.replay_ctr,
5810 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5811 NL80211_REPLAY_CTR_LEN);
5812
5813 wdev_lock(wdev);
5814 if (!wdev->current_bss) {
5815 err = -ENOTCONN;
5816 goto out;
5817 }
5818
5819 if (!rdev->ops->set_rekey_data) {
5820 err = -EOPNOTSUPP;
5821 goto out;
5822 }
5823
5824 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5825 out:
5826 wdev_unlock(wdev);
5827 return err;
5828 }
5829
5830 #define NL80211_FLAG_NEED_WIPHY 0x01
5831 #define NL80211_FLAG_NEED_NETDEV 0x02
5832 #define NL80211_FLAG_NEED_RTNL 0x04
5833 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5834 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5835 NL80211_FLAG_CHECK_NETDEV_UP)
5836
5837 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5838 struct genl_info *info)
5839 {
5840 struct cfg80211_registered_device *rdev;
5841 struct net_device *dev;
5842 int err;
5843 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5844
5845 if (rtnl)
5846 rtnl_lock();
5847
5848 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5849 rdev = cfg80211_get_dev_from_info(info);
5850 if (IS_ERR(rdev)) {
5851 if (rtnl)
5852 rtnl_unlock();
5853 return PTR_ERR(rdev);
5854 }
5855 info->user_ptr[0] = rdev;
5856 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5857 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5858 if (err) {
5859 if (rtnl)
5860 rtnl_unlock();
5861 return err;
5862 }
5863 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5864 !netif_running(dev)) {
5865 cfg80211_unlock_rdev(rdev);
5866 dev_put(dev);
5867 if (rtnl)
5868 rtnl_unlock();
5869 return -ENETDOWN;
5870 }
5871 info->user_ptr[0] = rdev;
5872 info->user_ptr[1] = dev;
5873 }
5874
5875 return 0;
5876 }
5877
5878 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5879 struct genl_info *info)
5880 {
5881 if (info->user_ptr[0])
5882 cfg80211_unlock_rdev(info->user_ptr[0]);
5883 if (info->user_ptr[1])
5884 dev_put(info->user_ptr[1]);
5885 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5886 rtnl_unlock();
5887 }
5888
5889 static struct genl_ops nl80211_ops[] = {
5890 {
5891 .cmd = NL80211_CMD_GET_WIPHY,
5892 .doit = nl80211_get_wiphy,
5893 .dumpit = nl80211_dump_wiphy,
5894 .policy = nl80211_policy,
5895 /* can be retrieved by unprivileged users */
5896 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5897 },
5898 {
5899 .cmd = NL80211_CMD_SET_WIPHY,
5900 .doit = nl80211_set_wiphy,
5901 .policy = nl80211_policy,
5902 .flags = GENL_ADMIN_PERM,
5903 .internal_flags = NL80211_FLAG_NEED_RTNL,
5904 },
5905 {
5906 .cmd = NL80211_CMD_GET_INTERFACE,
5907 .doit = nl80211_get_interface,
5908 .dumpit = nl80211_dump_interface,
5909 .policy = nl80211_policy,
5910 /* can be retrieved by unprivileged users */
5911 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5912 },
5913 {
5914 .cmd = NL80211_CMD_SET_INTERFACE,
5915 .doit = nl80211_set_interface,
5916 .policy = nl80211_policy,
5917 .flags = GENL_ADMIN_PERM,
5918 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5919 NL80211_FLAG_NEED_RTNL,
5920 },
5921 {
5922 .cmd = NL80211_CMD_NEW_INTERFACE,
5923 .doit = nl80211_new_interface,
5924 .policy = nl80211_policy,
5925 .flags = GENL_ADMIN_PERM,
5926 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5927 NL80211_FLAG_NEED_RTNL,
5928 },
5929 {
5930 .cmd = NL80211_CMD_DEL_INTERFACE,
5931 .doit = nl80211_del_interface,
5932 .policy = nl80211_policy,
5933 .flags = GENL_ADMIN_PERM,
5934 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5935 NL80211_FLAG_NEED_RTNL,
5936 },
5937 {
5938 .cmd = NL80211_CMD_GET_KEY,
5939 .doit = nl80211_get_key,
5940 .policy = nl80211_policy,
5941 .flags = GENL_ADMIN_PERM,
5942 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5943 NL80211_FLAG_NEED_RTNL,
5944 },
5945 {
5946 .cmd = NL80211_CMD_SET_KEY,
5947 .doit = nl80211_set_key,
5948 .policy = nl80211_policy,
5949 .flags = GENL_ADMIN_PERM,
5950 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5951 NL80211_FLAG_NEED_RTNL,
5952 },
5953 {
5954 .cmd = NL80211_CMD_NEW_KEY,
5955 .doit = nl80211_new_key,
5956 .policy = nl80211_policy,
5957 .flags = GENL_ADMIN_PERM,
5958 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5959 NL80211_FLAG_NEED_RTNL,
5960 },
5961 {
5962 .cmd = NL80211_CMD_DEL_KEY,
5963 .doit = nl80211_del_key,
5964 .policy = nl80211_policy,
5965 .flags = GENL_ADMIN_PERM,
5966 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5967 NL80211_FLAG_NEED_RTNL,
5968 },
5969 {
5970 .cmd = NL80211_CMD_SET_BEACON,
5971 .policy = nl80211_policy,
5972 .flags = GENL_ADMIN_PERM,
5973 .doit = nl80211_addset_beacon,
5974 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5975 NL80211_FLAG_NEED_RTNL,
5976 },
5977 {
5978 .cmd = NL80211_CMD_NEW_BEACON,
5979 .policy = nl80211_policy,
5980 .flags = GENL_ADMIN_PERM,
5981 .doit = nl80211_addset_beacon,
5982 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5983 NL80211_FLAG_NEED_RTNL,
5984 },
5985 {
5986 .cmd = NL80211_CMD_DEL_BEACON,
5987 .policy = nl80211_policy,
5988 .flags = GENL_ADMIN_PERM,
5989 .doit = nl80211_del_beacon,
5990 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5991 NL80211_FLAG_NEED_RTNL,
5992 },
5993 {
5994 .cmd = NL80211_CMD_GET_STATION,
5995 .doit = nl80211_get_station,
5996 .dumpit = nl80211_dump_station,
5997 .policy = nl80211_policy,
5998 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5999 NL80211_FLAG_NEED_RTNL,
6000 },
6001 {
6002 .cmd = NL80211_CMD_SET_STATION,
6003 .doit = nl80211_set_station,
6004 .policy = nl80211_policy,
6005 .flags = GENL_ADMIN_PERM,
6006 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6007 NL80211_FLAG_NEED_RTNL,
6008 },
6009 {
6010 .cmd = NL80211_CMD_NEW_STATION,
6011 .doit = nl80211_new_station,
6012 .policy = nl80211_policy,
6013 .flags = GENL_ADMIN_PERM,
6014 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6015 NL80211_FLAG_NEED_RTNL,
6016 },
6017 {
6018 .cmd = NL80211_CMD_DEL_STATION,
6019 .doit = nl80211_del_station,
6020 .policy = nl80211_policy,
6021 .flags = GENL_ADMIN_PERM,
6022 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6023 NL80211_FLAG_NEED_RTNL,
6024 },
6025 {
6026 .cmd = NL80211_CMD_GET_MPATH,
6027 .doit = nl80211_get_mpath,
6028 .dumpit = nl80211_dump_mpath,
6029 .policy = nl80211_policy,
6030 .flags = GENL_ADMIN_PERM,
6031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6032 NL80211_FLAG_NEED_RTNL,
6033 },
6034 {
6035 .cmd = NL80211_CMD_SET_MPATH,
6036 .doit = nl80211_set_mpath,
6037 .policy = nl80211_policy,
6038 .flags = GENL_ADMIN_PERM,
6039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6040 NL80211_FLAG_NEED_RTNL,
6041 },
6042 {
6043 .cmd = NL80211_CMD_NEW_MPATH,
6044 .doit = nl80211_new_mpath,
6045 .policy = nl80211_policy,
6046 .flags = GENL_ADMIN_PERM,
6047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6048 NL80211_FLAG_NEED_RTNL,
6049 },
6050 {
6051 .cmd = NL80211_CMD_DEL_MPATH,
6052 .doit = nl80211_del_mpath,
6053 .policy = nl80211_policy,
6054 .flags = GENL_ADMIN_PERM,
6055 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6056 NL80211_FLAG_NEED_RTNL,
6057 },
6058 {
6059 .cmd = NL80211_CMD_SET_BSS,
6060 .doit = nl80211_set_bss,
6061 .policy = nl80211_policy,
6062 .flags = GENL_ADMIN_PERM,
6063 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6064 NL80211_FLAG_NEED_RTNL,
6065 },
6066 {
6067 .cmd = NL80211_CMD_GET_REG,
6068 .doit = nl80211_get_reg,
6069 .policy = nl80211_policy,
6070 /* can be retrieved by unprivileged users */
6071 },
6072 {
6073 .cmd = NL80211_CMD_SET_REG,
6074 .doit = nl80211_set_reg,
6075 .policy = nl80211_policy,
6076 .flags = GENL_ADMIN_PERM,
6077 },
6078 {
6079 .cmd = NL80211_CMD_REQ_SET_REG,
6080 .doit = nl80211_req_set_reg,
6081 .policy = nl80211_policy,
6082 .flags = GENL_ADMIN_PERM,
6083 },
6084 {
6085 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6086 .doit = nl80211_get_mesh_config,
6087 .policy = nl80211_policy,
6088 /* can be retrieved by unprivileged users */
6089 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6090 NL80211_FLAG_NEED_RTNL,
6091 },
6092 {
6093 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6094 .doit = nl80211_update_mesh_config,
6095 .policy = nl80211_policy,
6096 .flags = GENL_ADMIN_PERM,
6097 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6098 NL80211_FLAG_NEED_RTNL,
6099 },
6100 {
6101 .cmd = NL80211_CMD_TRIGGER_SCAN,
6102 .doit = nl80211_trigger_scan,
6103 .policy = nl80211_policy,
6104 .flags = GENL_ADMIN_PERM,
6105 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6106 NL80211_FLAG_NEED_RTNL,
6107 },
6108 {
6109 .cmd = NL80211_CMD_GET_SCAN,
6110 .policy = nl80211_policy,
6111 .dumpit = nl80211_dump_scan,
6112 },
6113 {
6114 .cmd = NL80211_CMD_START_SCHED_SCAN,
6115 .doit = nl80211_start_sched_scan,
6116 .policy = nl80211_policy,
6117 .flags = GENL_ADMIN_PERM,
6118 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6119 NL80211_FLAG_NEED_RTNL,
6120 },
6121 {
6122 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6123 .doit = nl80211_stop_sched_scan,
6124 .policy = nl80211_policy,
6125 .flags = GENL_ADMIN_PERM,
6126 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6127 NL80211_FLAG_NEED_RTNL,
6128 },
6129 {
6130 .cmd = NL80211_CMD_AUTHENTICATE,
6131 .doit = nl80211_authenticate,
6132 .policy = nl80211_policy,
6133 .flags = GENL_ADMIN_PERM,
6134 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6135 NL80211_FLAG_NEED_RTNL,
6136 },
6137 {
6138 .cmd = NL80211_CMD_ASSOCIATE,
6139 .doit = nl80211_associate,
6140 .policy = nl80211_policy,
6141 .flags = GENL_ADMIN_PERM,
6142 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6143 NL80211_FLAG_NEED_RTNL,
6144 },
6145 {
6146 .cmd = NL80211_CMD_DEAUTHENTICATE,
6147 .doit = nl80211_deauthenticate,
6148 .policy = nl80211_policy,
6149 .flags = GENL_ADMIN_PERM,
6150 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6151 NL80211_FLAG_NEED_RTNL,
6152 },
6153 {
6154 .cmd = NL80211_CMD_DISASSOCIATE,
6155 .doit = nl80211_disassociate,
6156 .policy = nl80211_policy,
6157 .flags = GENL_ADMIN_PERM,
6158 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6159 NL80211_FLAG_NEED_RTNL,
6160 },
6161 {
6162 .cmd = NL80211_CMD_JOIN_IBSS,
6163 .doit = nl80211_join_ibss,
6164 .policy = nl80211_policy,
6165 .flags = GENL_ADMIN_PERM,
6166 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6167 NL80211_FLAG_NEED_RTNL,
6168 },
6169 {
6170 .cmd = NL80211_CMD_LEAVE_IBSS,
6171 .doit = nl80211_leave_ibss,
6172 .policy = nl80211_policy,
6173 .flags = GENL_ADMIN_PERM,
6174 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6175 NL80211_FLAG_NEED_RTNL,
6176 },
6177 #ifdef CONFIG_NL80211_TESTMODE
6178 {
6179 .cmd = NL80211_CMD_TESTMODE,
6180 .doit = nl80211_testmode_do,
6181 .dumpit = nl80211_testmode_dump,
6182 .policy = nl80211_policy,
6183 .flags = GENL_ADMIN_PERM,
6184 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6185 NL80211_FLAG_NEED_RTNL,
6186 },
6187 #endif
6188 {
6189 .cmd = NL80211_CMD_CONNECT,
6190 .doit = nl80211_connect,
6191 .policy = nl80211_policy,
6192 .flags = GENL_ADMIN_PERM,
6193 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6194 NL80211_FLAG_NEED_RTNL,
6195 },
6196 {
6197 .cmd = NL80211_CMD_DISCONNECT,
6198 .doit = nl80211_disconnect,
6199 .policy = nl80211_policy,
6200 .flags = GENL_ADMIN_PERM,
6201 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6202 NL80211_FLAG_NEED_RTNL,
6203 },
6204 {
6205 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6206 .doit = nl80211_wiphy_netns,
6207 .policy = nl80211_policy,
6208 .flags = GENL_ADMIN_PERM,
6209 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6210 NL80211_FLAG_NEED_RTNL,
6211 },
6212 {
6213 .cmd = NL80211_CMD_GET_SURVEY,
6214 .policy = nl80211_policy,
6215 .dumpit = nl80211_dump_survey,
6216 },
6217 {
6218 .cmd = NL80211_CMD_SET_PMKSA,
6219 .doit = nl80211_setdel_pmksa,
6220 .policy = nl80211_policy,
6221 .flags = GENL_ADMIN_PERM,
6222 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6223 NL80211_FLAG_NEED_RTNL,
6224 },
6225 {
6226 .cmd = NL80211_CMD_DEL_PMKSA,
6227 .doit = nl80211_setdel_pmksa,
6228 .policy = nl80211_policy,
6229 .flags = GENL_ADMIN_PERM,
6230 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6231 NL80211_FLAG_NEED_RTNL,
6232 },
6233 {
6234 .cmd = NL80211_CMD_FLUSH_PMKSA,
6235 .doit = nl80211_flush_pmksa,
6236 .policy = nl80211_policy,
6237 .flags = GENL_ADMIN_PERM,
6238 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6239 NL80211_FLAG_NEED_RTNL,
6240 },
6241 {
6242 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6243 .doit = nl80211_remain_on_channel,
6244 .policy = nl80211_policy,
6245 .flags = GENL_ADMIN_PERM,
6246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6247 NL80211_FLAG_NEED_RTNL,
6248 },
6249 {
6250 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6251 .doit = nl80211_cancel_remain_on_channel,
6252 .policy = nl80211_policy,
6253 .flags = GENL_ADMIN_PERM,
6254 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6255 NL80211_FLAG_NEED_RTNL,
6256 },
6257 {
6258 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6259 .doit = nl80211_set_tx_bitrate_mask,
6260 .policy = nl80211_policy,
6261 .flags = GENL_ADMIN_PERM,
6262 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6263 NL80211_FLAG_NEED_RTNL,
6264 },
6265 {
6266 .cmd = NL80211_CMD_REGISTER_FRAME,
6267 .doit = nl80211_register_mgmt,
6268 .policy = nl80211_policy,
6269 .flags = GENL_ADMIN_PERM,
6270 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6271 NL80211_FLAG_NEED_RTNL,
6272 },
6273 {
6274 .cmd = NL80211_CMD_FRAME,
6275 .doit = nl80211_tx_mgmt,
6276 .policy = nl80211_policy,
6277 .flags = GENL_ADMIN_PERM,
6278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6279 NL80211_FLAG_NEED_RTNL,
6280 },
6281 {
6282 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6283 .doit = nl80211_tx_mgmt_cancel_wait,
6284 .policy = nl80211_policy,
6285 .flags = GENL_ADMIN_PERM,
6286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6287 NL80211_FLAG_NEED_RTNL,
6288 },
6289 {
6290 .cmd = NL80211_CMD_SET_POWER_SAVE,
6291 .doit = nl80211_set_power_save,
6292 .policy = nl80211_policy,
6293 .flags = GENL_ADMIN_PERM,
6294 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6295 NL80211_FLAG_NEED_RTNL,
6296 },
6297 {
6298 .cmd = NL80211_CMD_GET_POWER_SAVE,
6299 .doit = nl80211_get_power_save,
6300 .policy = nl80211_policy,
6301 /* can be retrieved by unprivileged users */
6302 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6303 NL80211_FLAG_NEED_RTNL,
6304 },
6305 {
6306 .cmd = NL80211_CMD_SET_CQM,
6307 .doit = nl80211_set_cqm,
6308 .policy = nl80211_policy,
6309 .flags = GENL_ADMIN_PERM,
6310 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6311 NL80211_FLAG_NEED_RTNL,
6312 },
6313 {
6314 .cmd = NL80211_CMD_SET_CHANNEL,
6315 .doit = nl80211_set_channel,
6316 .policy = nl80211_policy,
6317 .flags = GENL_ADMIN_PERM,
6318 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6319 NL80211_FLAG_NEED_RTNL,
6320 },
6321 {
6322 .cmd = NL80211_CMD_SET_WDS_PEER,
6323 .doit = nl80211_set_wds_peer,
6324 .policy = nl80211_policy,
6325 .flags = GENL_ADMIN_PERM,
6326 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6327 NL80211_FLAG_NEED_RTNL,
6328 },
6329 {
6330 .cmd = NL80211_CMD_JOIN_MESH,
6331 .doit = nl80211_join_mesh,
6332 .policy = nl80211_policy,
6333 .flags = GENL_ADMIN_PERM,
6334 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6335 NL80211_FLAG_NEED_RTNL,
6336 },
6337 {
6338 .cmd = NL80211_CMD_LEAVE_MESH,
6339 .doit = nl80211_leave_mesh,
6340 .policy = nl80211_policy,
6341 .flags = GENL_ADMIN_PERM,
6342 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6343 NL80211_FLAG_NEED_RTNL,
6344 },
6345 {
6346 .cmd = NL80211_CMD_GET_WOWLAN,
6347 .doit = nl80211_get_wowlan,
6348 .policy = nl80211_policy,
6349 /* can be retrieved by unprivileged users */
6350 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6351 NL80211_FLAG_NEED_RTNL,
6352 },
6353 {
6354 .cmd = NL80211_CMD_SET_WOWLAN,
6355 .doit = nl80211_set_wowlan,
6356 .policy = nl80211_policy,
6357 .flags = GENL_ADMIN_PERM,
6358 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6359 NL80211_FLAG_NEED_RTNL,
6360 },
6361 {
6362 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6363 .doit = nl80211_set_rekey_data,
6364 .policy = nl80211_policy,
6365 .flags = GENL_ADMIN_PERM,
6366 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6367 NL80211_FLAG_NEED_RTNL,
6368 },
6369 {
6370 .cmd = NL80211_CMD_TDLS_MGMT,
6371 .doit = nl80211_tdls_mgmt,
6372 .policy = nl80211_policy,
6373 .flags = GENL_ADMIN_PERM,
6374 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6375 NL80211_FLAG_NEED_RTNL,
6376 },
6377 {
6378 .cmd = NL80211_CMD_TDLS_OPER,
6379 .doit = nl80211_tdls_oper,
6380 .policy = nl80211_policy,
6381 .flags = GENL_ADMIN_PERM,
6382 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6383 NL80211_FLAG_NEED_RTNL,
6384 },
6385 };
6386
6387 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6388 .name = "mlme",
6389 };
6390
6391 /* multicast groups */
6392 static struct genl_multicast_group nl80211_config_mcgrp = {
6393 .name = "config",
6394 };
6395 static struct genl_multicast_group nl80211_scan_mcgrp = {
6396 .name = "scan",
6397 };
6398 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6399 .name = "regulatory",
6400 };
6401
6402 /* notification functions */
6403
6404 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6405 {
6406 struct sk_buff *msg;
6407
6408 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6409 if (!msg)
6410 return;
6411
6412 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6413 nlmsg_free(msg);
6414 return;
6415 }
6416
6417 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6418 nl80211_config_mcgrp.id, GFP_KERNEL);
6419 }
6420
6421 static int nl80211_add_scan_req(struct sk_buff *msg,
6422 struct cfg80211_registered_device *rdev)
6423 {
6424 struct cfg80211_scan_request *req = rdev->scan_req;
6425 struct nlattr *nest;
6426 int i;
6427
6428 ASSERT_RDEV_LOCK(rdev);
6429
6430 if (WARN_ON(!req))
6431 return 0;
6432
6433 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6434 if (!nest)
6435 goto nla_put_failure;
6436 for (i = 0; i < req->n_ssids; i++)
6437 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6438 nla_nest_end(msg, nest);
6439
6440 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6441 if (!nest)
6442 goto nla_put_failure;
6443 for (i = 0; i < req->n_channels; i++)
6444 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6445 nla_nest_end(msg, nest);
6446
6447 if (req->ie)
6448 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6449
6450 return 0;
6451 nla_put_failure:
6452 return -ENOBUFS;
6453 }
6454
6455 static int nl80211_send_scan_msg(struct sk_buff *msg,
6456 struct cfg80211_registered_device *rdev,
6457 struct net_device *netdev,
6458 u32 pid, u32 seq, int flags,
6459 u32 cmd)
6460 {
6461 void *hdr;
6462
6463 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6464 if (!hdr)
6465 return -1;
6466
6467 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6468 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6469
6470 /* ignore errors and send incomplete event anyway */
6471 nl80211_add_scan_req(msg, rdev);
6472
6473 return genlmsg_end(msg, hdr);
6474
6475 nla_put_failure:
6476 genlmsg_cancel(msg, hdr);
6477 return -EMSGSIZE;
6478 }
6479
6480 static int
6481 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6482 struct cfg80211_registered_device *rdev,
6483 struct net_device *netdev,
6484 u32 pid, u32 seq, int flags, u32 cmd)
6485 {
6486 void *hdr;
6487
6488 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6489 if (!hdr)
6490 return -1;
6491
6492 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6493 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6494
6495 return genlmsg_end(msg, hdr);
6496
6497 nla_put_failure:
6498 genlmsg_cancel(msg, hdr);
6499 return -EMSGSIZE;
6500 }
6501
6502 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6503 struct net_device *netdev)
6504 {
6505 struct sk_buff *msg;
6506
6507 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6508 if (!msg)
6509 return;
6510
6511 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6512 NL80211_CMD_TRIGGER_SCAN) < 0) {
6513 nlmsg_free(msg);
6514 return;
6515 }
6516
6517 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6518 nl80211_scan_mcgrp.id, GFP_KERNEL);
6519 }
6520
6521 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6522 struct net_device *netdev)
6523 {
6524 struct sk_buff *msg;
6525
6526 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6527 if (!msg)
6528 return;
6529
6530 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6531 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6532 nlmsg_free(msg);
6533 return;
6534 }
6535
6536 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6537 nl80211_scan_mcgrp.id, GFP_KERNEL);
6538 }
6539
6540 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6541 struct net_device *netdev)
6542 {
6543 struct sk_buff *msg;
6544
6545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6546 if (!msg)
6547 return;
6548
6549 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6550 NL80211_CMD_SCAN_ABORTED) < 0) {
6551 nlmsg_free(msg);
6552 return;
6553 }
6554
6555 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6556 nl80211_scan_mcgrp.id, GFP_KERNEL);
6557 }
6558
6559 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6560 struct net_device *netdev)
6561 {
6562 struct sk_buff *msg;
6563
6564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6565 if (!msg)
6566 return;
6567
6568 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6569 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6570 nlmsg_free(msg);
6571 return;
6572 }
6573
6574 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6575 nl80211_scan_mcgrp.id, GFP_KERNEL);
6576 }
6577
6578 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6579 struct net_device *netdev, u32 cmd)
6580 {
6581 struct sk_buff *msg;
6582
6583 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6584 if (!msg)
6585 return;
6586
6587 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6588 nlmsg_free(msg);
6589 return;
6590 }
6591
6592 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6593 nl80211_scan_mcgrp.id, GFP_KERNEL);
6594 }
6595
6596 /*
6597 * This can happen on global regulatory changes or device specific settings
6598 * based on custom world regulatory domains.
6599 */
6600 void nl80211_send_reg_change_event(struct regulatory_request *request)
6601 {
6602 struct sk_buff *msg;
6603 void *hdr;
6604
6605 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6606 if (!msg)
6607 return;
6608
6609 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6610 if (!hdr) {
6611 nlmsg_free(msg);
6612 return;
6613 }
6614
6615 /* Userspace can always count this one always being set */
6616 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6617
6618 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6619 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6620 NL80211_REGDOM_TYPE_WORLD);
6621 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6622 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6623 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6624 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6625 request->intersect)
6626 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6627 NL80211_REGDOM_TYPE_INTERSECTION);
6628 else {
6629 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6630 NL80211_REGDOM_TYPE_COUNTRY);
6631 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6632 }
6633
6634 if (wiphy_idx_valid(request->wiphy_idx))
6635 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6636
6637 if (genlmsg_end(msg, hdr) < 0) {
6638 nlmsg_free(msg);
6639 return;
6640 }
6641
6642 rcu_read_lock();
6643 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6644 GFP_ATOMIC);
6645 rcu_read_unlock();
6646
6647 return;
6648
6649 nla_put_failure:
6650 genlmsg_cancel(msg, hdr);
6651 nlmsg_free(msg);
6652 }
6653
6654 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6655 struct net_device *netdev,
6656 const u8 *buf, size_t len,
6657 enum nl80211_commands cmd, gfp_t gfp)
6658 {
6659 struct sk_buff *msg;
6660 void *hdr;
6661
6662 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6663 if (!msg)
6664 return;
6665
6666 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6667 if (!hdr) {
6668 nlmsg_free(msg);
6669 return;
6670 }
6671
6672 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6673 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6674 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6675
6676 if (genlmsg_end(msg, hdr) < 0) {
6677 nlmsg_free(msg);
6678 return;
6679 }
6680
6681 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6682 nl80211_mlme_mcgrp.id, gfp);
6683 return;
6684
6685 nla_put_failure:
6686 genlmsg_cancel(msg, hdr);
6687 nlmsg_free(msg);
6688 }
6689
6690 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6691 struct net_device *netdev, const u8 *buf,
6692 size_t len, gfp_t gfp)
6693 {
6694 nl80211_send_mlme_event(rdev, netdev, buf, len,
6695 NL80211_CMD_AUTHENTICATE, gfp);
6696 }
6697
6698 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6699 struct net_device *netdev, const u8 *buf,
6700 size_t len, gfp_t gfp)
6701 {
6702 nl80211_send_mlme_event(rdev, netdev, buf, len,
6703 NL80211_CMD_ASSOCIATE, gfp);
6704 }
6705
6706 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6707 struct net_device *netdev, const u8 *buf,
6708 size_t len, gfp_t gfp)
6709 {
6710 nl80211_send_mlme_event(rdev, netdev, buf, len,
6711 NL80211_CMD_DEAUTHENTICATE, gfp);
6712 }
6713
6714 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6715 struct net_device *netdev, const u8 *buf,
6716 size_t len, gfp_t gfp)
6717 {
6718 nl80211_send_mlme_event(rdev, netdev, buf, len,
6719 NL80211_CMD_DISASSOCIATE, gfp);
6720 }
6721
6722 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6723 struct net_device *netdev, const u8 *buf,
6724 size_t len, gfp_t gfp)
6725 {
6726 nl80211_send_mlme_event(rdev, netdev, buf, len,
6727 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6728 }
6729
6730 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6731 struct net_device *netdev, const u8 *buf,
6732 size_t len, gfp_t gfp)
6733 {
6734 nl80211_send_mlme_event(rdev, netdev, buf, len,
6735 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6736 }
6737
6738 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6739 struct net_device *netdev, int cmd,
6740 const u8 *addr, gfp_t gfp)
6741 {
6742 struct sk_buff *msg;
6743 void *hdr;
6744
6745 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6746 if (!msg)
6747 return;
6748
6749 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6750 if (!hdr) {
6751 nlmsg_free(msg);
6752 return;
6753 }
6754
6755 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6756 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6757 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6758 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6759
6760 if (genlmsg_end(msg, hdr) < 0) {
6761 nlmsg_free(msg);
6762 return;
6763 }
6764
6765 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6766 nl80211_mlme_mcgrp.id, gfp);
6767 return;
6768
6769 nla_put_failure:
6770 genlmsg_cancel(msg, hdr);
6771 nlmsg_free(msg);
6772 }
6773
6774 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6775 struct net_device *netdev, const u8 *addr,
6776 gfp_t gfp)
6777 {
6778 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6779 addr, gfp);
6780 }
6781
6782 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6783 struct net_device *netdev, const u8 *addr,
6784 gfp_t gfp)
6785 {
6786 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6787 addr, gfp);
6788 }
6789
6790 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6791 struct net_device *netdev, const u8 *bssid,
6792 const u8 *req_ie, size_t req_ie_len,
6793 const u8 *resp_ie, size_t resp_ie_len,
6794 u16 status, gfp_t gfp)
6795 {
6796 struct sk_buff *msg;
6797 void *hdr;
6798
6799 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6800 if (!msg)
6801 return;
6802
6803 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6804 if (!hdr) {
6805 nlmsg_free(msg);
6806 return;
6807 }
6808
6809 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6810 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6811 if (bssid)
6812 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6813 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6814 if (req_ie)
6815 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6816 if (resp_ie)
6817 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6818
6819 if (genlmsg_end(msg, hdr) < 0) {
6820 nlmsg_free(msg);
6821 return;
6822 }
6823
6824 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6825 nl80211_mlme_mcgrp.id, gfp);
6826 return;
6827
6828 nla_put_failure:
6829 genlmsg_cancel(msg, hdr);
6830 nlmsg_free(msg);
6831
6832 }
6833
6834 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6835 struct net_device *netdev, const u8 *bssid,
6836 const u8 *req_ie, size_t req_ie_len,
6837 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6838 {
6839 struct sk_buff *msg;
6840 void *hdr;
6841
6842 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6843 if (!msg)
6844 return;
6845
6846 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6847 if (!hdr) {
6848 nlmsg_free(msg);
6849 return;
6850 }
6851
6852 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6853 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6854 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6855 if (req_ie)
6856 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6857 if (resp_ie)
6858 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6859
6860 if (genlmsg_end(msg, hdr) < 0) {
6861 nlmsg_free(msg);
6862 return;
6863 }
6864
6865 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6866 nl80211_mlme_mcgrp.id, gfp);
6867 return;
6868
6869 nla_put_failure:
6870 genlmsg_cancel(msg, hdr);
6871 nlmsg_free(msg);
6872
6873 }
6874
6875 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6876 struct net_device *netdev, u16 reason,
6877 const u8 *ie, size_t ie_len, bool from_ap)
6878 {
6879 struct sk_buff *msg;
6880 void *hdr;
6881
6882 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6883 if (!msg)
6884 return;
6885
6886 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6887 if (!hdr) {
6888 nlmsg_free(msg);
6889 return;
6890 }
6891
6892 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6893 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6894 if (from_ap && reason)
6895 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6896 if (from_ap)
6897 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6898 if (ie)
6899 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6900
6901 if (genlmsg_end(msg, hdr) < 0) {
6902 nlmsg_free(msg);
6903 return;
6904 }
6905
6906 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6907 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6908 return;
6909
6910 nla_put_failure:
6911 genlmsg_cancel(msg, hdr);
6912 nlmsg_free(msg);
6913
6914 }
6915
6916 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6917 struct net_device *netdev, const u8 *bssid,
6918 gfp_t gfp)
6919 {
6920 struct sk_buff *msg;
6921 void *hdr;
6922
6923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6924 if (!msg)
6925 return;
6926
6927 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6928 if (!hdr) {
6929 nlmsg_free(msg);
6930 return;
6931 }
6932
6933 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6934 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6935 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6936
6937 if (genlmsg_end(msg, hdr) < 0) {
6938 nlmsg_free(msg);
6939 return;
6940 }
6941
6942 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6943 nl80211_mlme_mcgrp.id, gfp);
6944 return;
6945
6946 nla_put_failure:
6947 genlmsg_cancel(msg, hdr);
6948 nlmsg_free(msg);
6949 }
6950
6951 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6952 struct net_device *netdev,
6953 const u8 *macaddr, const u8* ie, u8 ie_len,
6954 gfp_t gfp)
6955 {
6956 struct sk_buff *msg;
6957 void *hdr;
6958
6959 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6960 if (!msg)
6961 return;
6962
6963 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6964 if (!hdr) {
6965 nlmsg_free(msg);
6966 return;
6967 }
6968
6969 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6970 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6971 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6972 if (ie_len && ie)
6973 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6974
6975 if (genlmsg_end(msg, hdr) < 0) {
6976 nlmsg_free(msg);
6977 return;
6978 }
6979
6980 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6981 nl80211_mlme_mcgrp.id, gfp);
6982 return;
6983
6984 nla_put_failure:
6985 genlmsg_cancel(msg, hdr);
6986 nlmsg_free(msg);
6987 }
6988
6989 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6990 struct net_device *netdev, const u8 *addr,
6991 enum nl80211_key_type key_type, int key_id,
6992 const u8 *tsc, gfp_t gfp)
6993 {
6994 struct sk_buff *msg;
6995 void *hdr;
6996
6997 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6998 if (!msg)
6999 return;
7000
7001 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7002 if (!hdr) {
7003 nlmsg_free(msg);
7004 return;
7005 }
7006
7007 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7008 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7009 if (addr)
7010 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7011 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7012 if (key_id != -1)
7013 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7014 if (tsc)
7015 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7016
7017 if (genlmsg_end(msg, hdr) < 0) {
7018 nlmsg_free(msg);
7019 return;
7020 }
7021
7022 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7023 nl80211_mlme_mcgrp.id, gfp);
7024 return;
7025
7026 nla_put_failure:
7027 genlmsg_cancel(msg, hdr);
7028 nlmsg_free(msg);
7029 }
7030
7031 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7032 struct ieee80211_channel *channel_before,
7033 struct ieee80211_channel *channel_after)
7034 {
7035 struct sk_buff *msg;
7036 void *hdr;
7037 struct nlattr *nl_freq;
7038
7039 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7040 if (!msg)
7041 return;
7042
7043 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7044 if (!hdr) {
7045 nlmsg_free(msg);
7046 return;
7047 }
7048
7049 /*
7050 * Since we are applying the beacon hint to a wiphy we know its
7051 * wiphy_idx is valid
7052 */
7053 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7054
7055 /* Before */
7056 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7057 if (!nl_freq)
7058 goto nla_put_failure;
7059 if (nl80211_msg_put_channel(msg, channel_before))
7060 goto nla_put_failure;
7061 nla_nest_end(msg, nl_freq);
7062
7063 /* After */
7064 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7065 if (!nl_freq)
7066 goto nla_put_failure;
7067 if (nl80211_msg_put_channel(msg, channel_after))
7068 goto nla_put_failure;
7069 nla_nest_end(msg, nl_freq);
7070
7071 if (genlmsg_end(msg, hdr) < 0) {
7072 nlmsg_free(msg);
7073 return;
7074 }
7075
7076 rcu_read_lock();
7077 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7078 GFP_ATOMIC);
7079 rcu_read_unlock();
7080
7081 return;
7082
7083 nla_put_failure:
7084 genlmsg_cancel(msg, hdr);
7085 nlmsg_free(msg);
7086 }
7087
7088 static void nl80211_send_remain_on_chan_event(
7089 int cmd, struct cfg80211_registered_device *rdev,
7090 struct net_device *netdev, u64 cookie,
7091 struct ieee80211_channel *chan,
7092 enum nl80211_channel_type channel_type,
7093 unsigned int duration, gfp_t gfp)
7094 {
7095 struct sk_buff *msg;
7096 void *hdr;
7097
7098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7099 if (!msg)
7100 return;
7101
7102 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7103 if (!hdr) {
7104 nlmsg_free(msg);
7105 return;
7106 }
7107
7108 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7109 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7110 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7111 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7112 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7113
7114 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7115 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7116
7117 if (genlmsg_end(msg, hdr) < 0) {
7118 nlmsg_free(msg);
7119 return;
7120 }
7121
7122 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7123 nl80211_mlme_mcgrp.id, gfp);
7124 return;
7125
7126 nla_put_failure:
7127 genlmsg_cancel(msg, hdr);
7128 nlmsg_free(msg);
7129 }
7130
7131 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7132 struct net_device *netdev, u64 cookie,
7133 struct ieee80211_channel *chan,
7134 enum nl80211_channel_type channel_type,
7135 unsigned int duration, gfp_t gfp)
7136 {
7137 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7138 rdev, netdev, cookie, chan,
7139 channel_type, duration, gfp);
7140 }
7141
7142 void nl80211_send_remain_on_channel_cancel(
7143 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7144 u64 cookie, struct ieee80211_channel *chan,
7145 enum nl80211_channel_type channel_type, gfp_t gfp)
7146 {
7147 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7148 rdev, netdev, cookie, chan,
7149 channel_type, 0, gfp);
7150 }
7151
7152 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7153 struct net_device *dev, const u8 *mac_addr,
7154 struct station_info *sinfo, gfp_t gfp)
7155 {
7156 struct sk_buff *msg;
7157
7158 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7159 if (!msg)
7160 return;
7161
7162 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7163 nlmsg_free(msg);
7164 return;
7165 }
7166
7167 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7168 nl80211_mlme_mcgrp.id, gfp);
7169 }
7170
7171 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7172 struct net_device *dev, const u8 *mac_addr,
7173 gfp_t gfp)
7174 {
7175 struct sk_buff *msg;
7176 void *hdr;
7177
7178 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7179 if (!msg)
7180 return;
7181
7182 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7183 if (!hdr) {
7184 nlmsg_free(msg);
7185 return;
7186 }
7187
7188 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7189 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7190
7191 if (genlmsg_end(msg, hdr) < 0) {
7192 nlmsg_free(msg);
7193 return;
7194 }
7195
7196 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7197 nl80211_mlme_mcgrp.id, gfp);
7198 return;
7199
7200 nla_put_failure:
7201 genlmsg_cancel(msg, hdr);
7202 nlmsg_free(msg);
7203 }
7204
7205 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7206 struct net_device *netdev, u32 nlpid,
7207 int freq, const u8 *buf, size_t len, gfp_t gfp)
7208 {
7209 struct sk_buff *msg;
7210 void *hdr;
7211 int err;
7212
7213 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7214 if (!msg)
7215 return -ENOMEM;
7216
7217 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7218 if (!hdr) {
7219 nlmsg_free(msg);
7220 return -ENOMEM;
7221 }
7222
7223 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7224 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7225 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7226 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7227
7228 err = genlmsg_end(msg, hdr);
7229 if (err < 0) {
7230 nlmsg_free(msg);
7231 return err;
7232 }
7233
7234 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7235 if (err < 0)
7236 return err;
7237 return 0;
7238
7239 nla_put_failure:
7240 genlmsg_cancel(msg, hdr);
7241 nlmsg_free(msg);
7242 return -ENOBUFS;
7243 }
7244
7245 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7246 struct net_device *netdev, u64 cookie,
7247 const u8 *buf, size_t len, bool ack,
7248 gfp_t gfp)
7249 {
7250 struct sk_buff *msg;
7251 void *hdr;
7252
7253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7254 if (!msg)
7255 return;
7256
7257 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7258 if (!hdr) {
7259 nlmsg_free(msg);
7260 return;
7261 }
7262
7263 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7264 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7265 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7266 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7267 if (ack)
7268 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7269
7270 if (genlmsg_end(msg, hdr) < 0) {
7271 nlmsg_free(msg);
7272 return;
7273 }
7274
7275 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7276 return;
7277
7278 nla_put_failure:
7279 genlmsg_cancel(msg, hdr);
7280 nlmsg_free(msg);
7281 }
7282
7283 void
7284 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7285 struct net_device *netdev,
7286 enum nl80211_cqm_rssi_threshold_event rssi_event,
7287 gfp_t gfp)
7288 {
7289 struct sk_buff *msg;
7290 struct nlattr *pinfoattr;
7291 void *hdr;
7292
7293 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7294 if (!msg)
7295 return;
7296
7297 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7298 if (!hdr) {
7299 nlmsg_free(msg);
7300 return;
7301 }
7302
7303 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7304 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7305
7306 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7307 if (!pinfoattr)
7308 goto nla_put_failure;
7309
7310 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7311 rssi_event);
7312
7313 nla_nest_end(msg, pinfoattr);
7314
7315 if (genlmsg_end(msg, hdr) < 0) {
7316 nlmsg_free(msg);
7317 return;
7318 }
7319
7320 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7321 nl80211_mlme_mcgrp.id, gfp);
7322 return;
7323
7324 nla_put_failure:
7325 genlmsg_cancel(msg, hdr);
7326 nlmsg_free(msg);
7327 }
7328
7329 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7330 struct net_device *netdev, const u8 *bssid,
7331 const u8 *replay_ctr, gfp_t gfp)
7332 {
7333 struct sk_buff *msg;
7334 struct nlattr *rekey_attr;
7335 void *hdr;
7336
7337 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7338 if (!msg)
7339 return;
7340
7341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7342 if (!hdr) {
7343 nlmsg_free(msg);
7344 return;
7345 }
7346
7347 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7349 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7350
7351 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7352 if (!rekey_attr)
7353 goto nla_put_failure;
7354
7355 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7356 NL80211_REPLAY_CTR_LEN, replay_ctr);
7357
7358 nla_nest_end(msg, rekey_attr);
7359
7360 if (genlmsg_end(msg, hdr) < 0) {
7361 nlmsg_free(msg);
7362 return;
7363 }
7364
7365 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7366 nl80211_mlme_mcgrp.id, gfp);
7367 return;
7368
7369 nla_put_failure:
7370 genlmsg_cancel(msg, hdr);
7371 nlmsg_free(msg);
7372 }
7373
7374 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7375 struct net_device *netdev, int index,
7376 const u8 *bssid, bool preauth, gfp_t gfp)
7377 {
7378 struct sk_buff *msg;
7379 struct nlattr *attr;
7380 void *hdr;
7381
7382 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7383 if (!msg)
7384 return;
7385
7386 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7387 if (!hdr) {
7388 nlmsg_free(msg);
7389 return;
7390 }
7391
7392 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7393 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7394
7395 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7396 if (!attr)
7397 goto nla_put_failure;
7398
7399 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7400 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7401 if (preauth)
7402 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7403
7404 nla_nest_end(msg, attr);
7405
7406 if (genlmsg_end(msg, hdr) < 0) {
7407 nlmsg_free(msg);
7408 return;
7409 }
7410
7411 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7412 nl80211_mlme_mcgrp.id, gfp);
7413 return;
7414
7415 nla_put_failure:
7416 genlmsg_cancel(msg, hdr);
7417 nlmsg_free(msg);
7418 }
7419
7420 void
7421 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7422 struct net_device *netdev, const u8 *peer,
7423 u32 num_packets, gfp_t gfp)
7424 {
7425 struct sk_buff *msg;
7426 struct nlattr *pinfoattr;
7427 void *hdr;
7428
7429 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7430 if (!msg)
7431 return;
7432
7433 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7434 if (!hdr) {
7435 nlmsg_free(msg);
7436 return;
7437 }
7438
7439 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7440 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7441 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7442
7443 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7444 if (!pinfoattr)
7445 goto nla_put_failure;
7446
7447 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7448
7449 nla_nest_end(msg, pinfoattr);
7450
7451 if (genlmsg_end(msg, hdr) < 0) {
7452 nlmsg_free(msg);
7453 return;
7454 }
7455
7456 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7457 nl80211_mlme_mcgrp.id, gfp);
7458 return;
7459
7460 nla_put_failure:
7461 genlmsg_cancel(msg, hdr);
7462 nlmsg_free(msg);
7463 }
7464
7465 static int nl80211_netlink_notify(struct notifier_block * nb,
7466 unsigned long state,
7467 void *_notify)
7468 {
7469 struct netlink_notify *notify = _notify;
7470 struct cfg80211_registered_device *rdev;
7471 struct wireless_dev *wdev;
7472
7473 if (state != NETLINK_URELEASE)
7474 return NOTIFY_DONE;
7475
7476 rcu_read_lock();
7477
7478 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7479 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7480 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7481
7482 rcu_read_unlock();
7483
7484 return NOTIFY_DONE;
7485 }
7486
7487 static struct notifier_block nl80211_netlink_notifier = {
7488 .notifier_call = nl80211_netlink_notify,
7489 };
7490
7491 /* initialisation/exit functions */
7492
7493 int nl80211_init(void)
7494 {
7495 int err;
7496
7497 err = genl_register_family_with_ops(&nl80211_fam,
7498 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7499 if (err)
7500 return err;
7501
7502 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7503 if (err)
7504 goto err_out;
7505
7506 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7507 if (err)
7508 goto err_out;
7509
7510 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7511 if (err)
7512 goto err_out;
7513
7514 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7515 if (err)
7516 goto err_out;
7517
7518 #ifdef CONFIG_NL80211_TESTMODE
7519 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7520 if (err)
7521 goto err_out;
7522 #endif
7523
7524 err = netlink_register_notifier(&nl80211_netlink_notifier);
7525 if (err)
7526 goto err_out;
7527
7528 return 0;
7529 err_out:
7530 genl_unregister_family(&nl80211_fam);
7531 return err;
7532 }
7533
7534 void nl80211_exit(void)
7535 {
7536 netlink_unregister_notifier(&nl80211_netlink_notifier);
7537 genl_unregister_family(&nl80211_fam);
7538 }
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