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nl80211: support sending TDLS commands/frames
[mirror_ubuntu-artful-kernel.git] / net / wireless / nl80211.c
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 nla_nest_end(msg, sinfoattr);
2348
2349 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2350 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2351 sinfo->assoc_req_ies);
2352
2353 return genlmsg_end(msg, hdr);
2354
2355 nla_put_failure:
2356 genlmsg_cancel(msg, hdr);
2357 return -EMSGSIZE;
2358 }
2359
2360 static int nl80211_dump_station(struct sk_buff *skb,
2361 struct netlink_callback *cb)
2362 {
2363 struct station_info sinfo;
2364 struct cfg80211_registered_device *dev;
2365 struct net_device *netdev;
2366 u8 mac_addr[ETH_ALEN];
2367 int sta_idx = cb->args[1];
2368 int err;
2369
2370 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2371 if (err)
2372 return err;
2373
2374 if (!dev->ops->dump_station) {
2375 err = -EOPNOTSUPP;
2376 goto out_err;
2377 }
2378
2379 while (1) {
2380 memset(&sinfo, 0, sizeof(sinfo));
2381 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2382 mac_addr, &sinfo);
2383 if (err == -ENOENT)
2384 break;
2385 if (err)
2386 goto out_err;
2387
2388 if (nl80211_send_station(skb,
2389 NETLINK_CB(cb->skb).pid,
2390 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2391 netdev, mac_addr,
2392 &sinfo) < 0)
2393 goto out;
2394
2395 sta_idx++;
2396 }
2397
2398
2399 out:
2400 cb->args[1] = sta_idx;
2401 err = skb->len;
2402 out_err:
2403 nl80211_finish_netdev_dump(dev);
2404
2405 return err;
2406 }
2407
2408 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2409 {
2410 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2411 struct net_device *dev = info->user_ptr[1];
2412 struct station_info sinfo;
2413 struct sk_buff *msg;
2414 u8 *mac_addr = NULL;
2415 int err;
2416
2417 memset(&sinfo, 0, sizeof(sinfo));
2418
2419 if (!info->attrs[NL80211_ATTR_MAC])
2420 return -EINVAL;
2421
2422 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2423
2424 if (!rdev->ops->get_station)
2425 return -EOPNOTSUPP;
2426
2427 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2428 if (err)
2429 return err;
2430
2431 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2432 if (!msg)
2433 return -ENOMEM;
2434
2435 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2436 dev, mac_addr, &sinfo) < 0) {
2437 nlmsg_free(msg);
2438 return -ENOBUFS;
2439 }
2440
2441 return genlmsg_reply(msg, info);
2442 }
2443
2444 /*
2445 * Get vlan interface making sure it is running and on the right wiphy.
2446 */
2447 static int get_vlan(struct genl_info *info,
2448 struct cfg80211_registered_device *rdev,
2449 struct net_device **vlan)
2450 {
2451 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2452 *vlan = NULL;
2453
2454 if (vlanattr) {
2455 *vlan = dev_get_by_index(genl_info_net(info),
2456 nla_get_u32(vlanattr));
2457 if (!*vlan)
2458 return -ENODEV;
2459 if (!(*vlan)->ieee80211_ptr)
2460 return -EINVAL;
2461 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2462 return -EINVAL;
2463 if (!netif_running(*vlan))
2464 return -ENETDOWN;
2465 }
2466 return 0;
2467 }
2468
2469 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2470 {
2471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2472 int err;
2473 struct net_device *dev = info->user_ptr[1];
2474 struct station_parameters params;
2475 u8 *mac_addr = NULL;
2476
2477 memset(&params, 0, sizeof(params));
2478
2479 params.listen_interval = -1;
2480 params.plink_state = -1;
2481
2482 if (info->attrs[NL80211_ATTR_STA_AID])
2483 return -EINVAL;
2484
2485 if (!info->attrs[NL80211_ATTR_MAC])
2486 return -EINVAL;
2487
2488 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2489
2490 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2491 params.supported_rates =
2492 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2493 params.supported_rates_len =
2494 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2495 }
2496
2497 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2498 params.listen_interval =
2499 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2500
2501 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2502 params.ht_capa =
2503 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2504
2505 if (parse_station_flags(info, &params))
2506 return -EINVAL;
2507
2508 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2509 params.plink_action =
2510 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2511
2512 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2513 params.plink_state =
2514 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2515
2516 err = get_vlan(info, rdev, &params.vlan);
2517 if (err)
2518 goto out;
2519
2520 /* validate settings */
2521 err = 0;
2522
2523 switch (dev->ieee80211_ptr->iftype) {
2524 case NL80211_IFTYPE_AP:
2525 case NL80211_IFTYPE_AP_VLAN:
2526 case NL80211_IFTYPE_P2P_GO:
2527 /* disallow mesh-specific things */
2528 if (params.plink_action)
2529 err = -EINVAL;
2530 break;
2531 case NL80211_IFTYPE_P2P_CLIENT:
2532 case NL80211_IFTYPE_STATION:
2533 /* disallow everything but AUTHORIZED flag */
2534 if (params.plink_action)
2535 err = -EINVAL;
2536 if (params.vlan)
2537 err = -EINVAL;
2538 if (params.supported_rates)
2539 err = -EINVAL;
2540 if (params.ht_capa)
2541 err = -EINVAL;
2542 if (params.listen_interval >= 0)
2543 err = -EINVAL;
2544 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2545 err = -EINVAL;
2546 break;
2547 case NL80211_IFTYPE_MESH_POINT:
2548 /* disallow things mesh doesn't support */
2549 if (params.vlan)
2550 err = -EINVAL;
2551 if (params.ht_capa)
2552 err = -EINVAL;
2553 if (params.listen_interval >= 0)
2554 err = -EINVAL;
2555 if (params.sta_flags_mask &
2556 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2557 BIT(NL80211_STA_FLAG_MFP) |
2558 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2559 err = -EINVAL;
2560 break;
2561 default:
2562 err = -EINVAL;
2563 }
2564
2565 if (err)
2566 goto out;
2567
2568 if (!rdev->ops->change_station) {
2569 err = -EOPNOTSUPP;
2570 goto out;
2571 }
2572
2573 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2574
2575 out:
2576 if (params.vlan)
2577 dev_put(params.vlan);
2578
2579 return err;
2580 }
2581
2582 static struct nla_policy
2583 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2584 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2585 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2586 };
2587
2588 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2589 {
2590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2591 int err;
2592 struct net_device *dev = info->user_ptr[1];
2593 struct station_parameters params;
2594 u8 *mac_addr = NULL;
2595
2596 memset(&params, 0, sizeof(params));
2597
2598 if (!info->attrs[NL80211_ATTR_MAC])
2599 return -EINVAL;
2600
2601 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2602 return -EINVAL;
2603
2604 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2605 return -EINVAL;
2606
2607 if (!info->attrs[NL80211_ATTR_STA_AID])
2608 return -EINVAL;
2609
2610 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2611 params.supported_rates =
2612 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2613 params.supported_rates_len =
2614 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2615 params.listen_interval =
2616 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2617
2618 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2619 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2620 return -EINVAL;
2621
2622 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2623 params.ht_capa =
2624 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2625
2626 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2627 params.plink_action =
2628 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2629
2630 if (parse_station_flags(info, &params))
2631 return -EINVAL;
2632
2633 /* parse WME attributes if sta is WME capable */
2634 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2635 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2636 info->attrs[NL80211_ATTR_STA_WME]) {
2637 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2638 struct nlattr *nla;
2639
2640 nla = info->attrs[NL80211_ATTR_STA_WME];
2641 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2642 nl80211_sta_wme_policy);
2643 if (err)
2644 return err;
2645
2646 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2647 params.uapsd_queues =
2648 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2649 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2650 return -EINVAL;
2651
2652 if (tb[NL80211_STA_WME_MAX_SP])
2653 params.max_sp =
2654 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2655
2656 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2657 return -EINVAL;
2658
2659 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2660 }
2661
2662 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2663 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2664 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2665 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2666 return -EINVAL;
2667
2668 err = get_vlan(info, rdev, &params.vlan);
2669 if (err)
2670 goto out;
2671
2672 /* validate settings */
2673 err = 0;
2674
2675 if (!rdev->ops->add_station) {
2676 err = -EOPNOTSUPP;
2677 goto out;
2678 }
2679
2680 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2681
2682 out:
2683 if (params.vlan)
2684 dev_put(params.vlan);
2685 return err;
2686 }
2687
2688 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2689 {
2690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2691 struct net_device *dev = info->user_ptr[1];
2692 u8 *mac_addr = NULL;
2693
2694 if (info->attrs[NL80211_ATTR_MAC])
2695 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2696
2697 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2699 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2700 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2701 return -EINVAL;
2702
2703 if (!rdev->ops->del_station)
2704 return -EOPNOTSUPP;
2705
2706 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2707 }
2708
2709 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2710 int flags, struct net_device *dev,
2711 u8 *dst, u8 *next_hop,
2712 struct mpath_info *pinfo)
2713 {
2714 void *hdr;
2715 struct nlattr *pinfoattr;
2716
2717 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2718 if (!hdr)
2719 return -1;
2720
2721 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2722 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2723 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2724
2725 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2726
2727 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2728 if (!pinfoattr)
2729 goto nla_put_failure;
2730 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2731 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2732 pinfo->frame_qlen);
2733 if (pinfo->filled & MPATH_INFO_SN)
2734 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2735 pinfo->sn);
2736 if (pinfo->filled & MPATH_INFO_METRIC)
2737 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2738 pinfo->metric);
2739 if (pinfo->filled & MPATH_INFO_EXPTIME)
2740 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2741 pinfo->exptime);
2742 if (pinfo->filled & MPATH_INFO_FLAGS)
2743 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2744 pinfo->flags);
2745 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2746 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2747 pinfo->discovery_timeout);
2748 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2749 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2750 pinfo->discovery_retries);
2751
2752 nla_nest_end(msg, pinfoattr);
2753
2754 return genlmsg_end(msg, hdr);
2755
2756 nla_put_failure:
2757 genlmsg_cancel(msg, hdr);
2758 return -EMSGSIZE;
2759 }
2760
2761 static int nl80211_dump_mpath(struct sk_buff *skb,
2762 struct netlink_callback *cb)
2763 {
2764 struct mpath_info pinfo;
2765 struct cfg80211_registered_device *dev;
2766 struct net_device *netdev;
2767 u8 dst[ETH_ALEN];
2768 u8 next_hop[ETH_ALEN];
2769 int path_idx = cb->args[1];
2770 int err;
2771
2772 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2773 if (err)
2774 return err;
2775
2776 if (!dev->ops->dump_mpath) {
2777 err = -EOPNOTSUPP;
2778 goto out_err;
2779 }
2780
2781 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2782 err = -EOPNOTSUPP;
2783 goto out_err;
2784 }
2785
2786 while (1) {
2787 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2788 dst, next_hop, &pinfo);
2789 if (err == -ENOENT)
2790 break;
2791 if (err)
2792 goto out_err;
2793
2794 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2795 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2796 netdev, dst, next_hop,
2797 &pinfo) < 0)
2798 goto out;
2799
2800 path_idx++;
2801 }
2802
2803
2804 out:
2805 cb->args[1] = path_idx;
2806 err = skb->len;
2807 out_err:
2808 nl80211_finish_netdev_dump(dev);
2809 return err;
2810 }
2811
2812 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2813 {
2814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2815 int err;
2816 struct net_device *dev = info->user_ptr[1];
2817 struct mpath_info pinfo;
2818 struct sk_buff *msg;
2819 u8 *dst = NULL;
2820 u8 next_hop[ETH_ALEN];
2821
2822 memset(&pinfo, 0, sizeof(pinfo));
2823
2824 if (!info->attrs[NL80211_ATTR_MAC])
2825 return -EINVAL;
2826
2827 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2828
2829 if (!rdev->ops->get_mpath)
2830 return -EOPNOTSUPP;
2831
2832 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2833 return -EOPNOTSUPP;
2834
2835 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2836 if (err)
2837 return err;
2838
2839 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2840 if (!msg)
2841 return -ENOMEM;
2842
2843 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2844 dev, dst, next_hop, &pinfo) < 0) {
2845 nlmsg_free(msg);
2846 return -ENOBUFS;
2847 }
2848
2849 return genlmsg_reply(msg, info);
2850 }
2851
2852 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2853 {
2854 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2855 struct net_device *dev = info->user_ptr[1];
2856 u8 *dst = NULL;
2857 u8 *next_hop = NULL;
2858
2859 if (!info->attrs[NL80211_ATTR_MAC])
2860 return -EINVAL;
2861
2862 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2863 return -EINVAL;
2864
2865 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2866 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2867
2868 if (!rdev->ops->change_mpath)
2869 return -EOPNOTSUPP;
2870
2871 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2872 return -EOPNOTSUPP;
2873
2874 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2875 }
2876
2877 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2878 {
2879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2880 struct net_device *dev = info->user_ptr[1];
2881 u8 *dst = NULL;
2882 u8 *next_hop = NULL;
2883
2884 if (!info->attrs[NL80211_ATTR_MAC])
2885 return -EINVAL;
2886
2887 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2888 return -EINVAL;
2889
2890 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2891 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2892
2893 if (!rdev->ops->add_mpath)
2894 return -EOPNOTSUPP;
2895
2896 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2897 return -EOPNOTSUPP;
2898
2899 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2900 }
2901
2902 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2903 {
2904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2905 struct net_device *dev = info->user_ptr[1];
2906 u8 *dst = NULL;
2907
2908 if (info->attrs[NL80211_ATTR_MAC])
2909 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2910
2911 if (!rdev->ops->del_mpath)
2912 return -EOPNOTSUPP;
2913
2914 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2915 }
2916
2917 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2918 {
2919 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2920 struct net_device *dev = info->user_ptr[1];
2921 struct bss_parameters params;
2922
2923 memset(&params, 0, sizeof(params));
2924 /* default to not changing parameters */
2925 params.use_cts_prot = -1;
2926 params.use_short_preamble = -1;
2927 params.use_short_slot_time = -1;
2928 params.ap_isolate = -1;
2929 params.ht_opmode = -1;
2930
2931 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2932 params.use_cts_prot =
2933 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2934 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2935 params.use_short_preamble =
2936 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2937 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2938 params.use_short_slot_time =
2939 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2940 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2941 params.basic_rates =
2942 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2943 params.basic_rates_len =
2944 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2945 }
2946 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2947 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2948 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2949 params.ht_opmode =
2950 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2951
2952 if (!rdev->ops->change_bss)
2953 return -EOPNOTSUPP;
2954
2955 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2956 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2957 return -EOPNOTSUPP;
2958
2959 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2960 }
2961
2962 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2963 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2964 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2965 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2966 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2967 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2968 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2969 };
2970
2971 static int parse_reg_rule(struct nlattr *tb[],
2972 struct ieee80211_reg_rule *reg_rule)
2973 {
2974 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2975 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2976
2977 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2978 return -EINVAL;
2979 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2980 return -EINVAL;
2981 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2982 return -EINVAL;
2983 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2984 return -EINVAL;
2985 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2986 return -EINVAL;
2987
2988 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2989
2990 freq_range->start_freq_khz =
2991 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2992 freq_range->end_freq_khz =
2993 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2994 freq_range->max_bandwidth_khz =
2995 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2996
2997 power_rule->max_eirp =
2998 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2999
3000 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3001 power_rule->max_antenna_gain =
3002 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3003
3004 return 0;
3005 }
3006
3007 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3008 {
3009 int r;
3010 char *data = NULL;
3011
3012 /*
3013 * You should only get this when cfg80211 hasn't yet initialized
3014 * completely when built-in to the kernel right between the time
3015 * window between nl80211_init() and regulatory_init(), if that is
3016 * even possible.
3017 */
3018 mutex_lock(&cfg80211_mutex);
3019 if (unlikely(!cfg80211_regdomain)) {
3020 mutex_unlock(&cfg80211_mutex);
3021 return -EINPROGRESS;
3022 }
3023 mutex_unlock(&cfg80211_mutex);
3024
3025 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3026 return -EINVAL;
3027
3028 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3029
3030 r = regulatory_hint_user(data);
3031
3032 return r;
3033 }
3034
3035 static int nl80211_get_mesh_config(struct sk_buff *skb,
3036 struct genl_info *info)
3037 {
3038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3039 struct net_device *dev = info->user_ptr[1];
3040 struct wireless_dev *wdev = dev->ieee80211_ptr;
3041 struct mesh_config cur_params;
3042 int err = 0;
3043 void *hdr;
3044 struct nlattr *pinfoattr;
3045 struct sk_buff *msg;
3046
3047 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3048 return -EOPNOTSUPP;
3049
3050 if (!rdev->ops->get_mesh_config)
3051 return -EOPNOTSUPP;
3052
3053 wdev_lock(wdev);
3054 /* If not connected, get default parameters */
3055 if (!wdev->mesh_id_len)
3056 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3057 else
3058 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3059 &cur_params);
3060 wdev_unlock(wdev);
3061
3062 if (err)
3063 return err;
3064
3065 /* Draw up a netlink message to send back */
3066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3067 if (!msg)
3068 return -ENOMEM;
3069 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3070 NL80211_CMD_GET_MESH_CONFIG);
3071 if (!hdr)
3072 goto out;
3073 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3074 if (!pinfoattr)
3075 goto nla_put_failure;
3076 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3077 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3078 cur_params.dot11MeshRetryTimeout);
3079 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3080 cur_params.dot11MeshConfirmTimeout);
3081 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3082 cur_params.dot11MeshHoldingTimeout);
3083 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3084 cur_params.dot11MeshMaxPeerLinks);
3085 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3086 cur_params.dot11MeshMaxRetries);
3087 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3088 cur_params.dot11MeshTTL);
3089 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3090 cur_params.element_ttl);
3091 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3092 cur_params.auto_open_plinks);
3093 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3094 cur_params.dot11MeshHWMPmaxPREQretries);
3095 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3096 cur_params.path_refresh_time);
3097 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3098 cur_params.min_discovery_timeout);
3099 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3100 cur_params.dot11MeshHWMPactivePathTimeout);
3101 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3102 cur_params.dot11MeshHWMPpreqMinInterval);
3103 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3104 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3105 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3106 cur_params.dot11MeshHWMPRootMode);
3107 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3108 cur_params.dot11MeshHWMPRannInterval);
3109 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3110 cur_params.dot11MeshGateAnnouncementProtocol);
3111 nla_nest_end(msg, pinfoattr);
3112 genlmsg_end(msg, hdr);
3113 return genlmsg_reply(msg, info);
3114
3115 nla_put_failure:
3116 genlmsg_cancel(msg, hdr);
3117 out:
3118 nlmsg_free(msg);
3119 return -ENOBUFS;
3120 }
3121
3122 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3123 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3124 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3125 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3126 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3127 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3128 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3129 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3130 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3131
3132 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3133 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3134 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3135 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3136 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3137 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3138 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3139 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3140 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3141 };
3142
3143 static const struct nla_policy
3144 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3145 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3146 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3147 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3148 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3149 .len = IEEE80211_MAX_DATA_LEN },
3150 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3151 };
3152
3153 static int nl80211_parse_mesh_config(struct genl_info *info,
3154 struct mesh_config *cfg,
3155 u32 *mask_out)
3156 {
3157 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3158 u32 mask = 0;
3159
3160 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3161 do {\
3162 if (table[attr_num]) {\
3163 cfg->param = nla_fn(table[attr_num]); \
3164 mask |= (1 << (attr_num - 1)); \
3165 } \
3166 } while (0);\
3167
3168
3169 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3170 return -EINVAL;
3171 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3172 info->attrs[NL80211_ATTR_MESH_CONFIG],
3173 nl80211_meshconf_params_policy))
3174 return -EINVAL;
3175
3176 /* This makes sure that there aren't more than 32 mesh config
3177 * parameters (otherwise our bitfield scheme would not work.) */
3178 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3179
3180 /* Fill in the params struct */
3181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3182 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3183 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3184 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3185 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3186 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3187 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3188 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3190 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3191 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3192 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3193 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3194 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3196 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3197 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3198 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3199 nla_get_u8);
3200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3201 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3203 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3204 nla_get_u16);
3205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3206 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3207 nla_get_u32);
3208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3209 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3210 nla_get_u16);
3211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3212 dot11MeshHWMPnetDiameterTraversalTime,
3213 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3214 nla_get_u16);
3215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3216 dot11MeshHWMPRootMode, mask,
3217 NL80211_MESHCONF_HWMP_ROOTMODE,
3218 nla_get_u8);
3219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3220 dot11MeshHWMPRannInterval, mask,
3221 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3222 nla_get_u16);
3223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3224 dot11MeshGateAnnouncementProtocol, mask,
3225 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3226 nla_get_u8);
3227 if (mask_out)
3228 *mask_out = mask;
3229
3230 return 0;
3231
3232 #undef FILL_IN_MESH_PARAM_IF_SET
3233 }
3234
3235 static int nl80211_parse_mesh_setup(struct genl_info *info,
3236 struct mesh_setup *setup)
3237 {
3238 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3239
3240 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3241 return -EINVAL;
3242 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3243 info->attrs[NL80211_ATTR_MESH_SETUP],
3244 nl80211_mesh_setup_params_policy))
3245 return -EINVAL;
3246
3247 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3248 setup->path_sel_proto =
3249 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3250 IEEE80211_PATH_PROTOCOL_VENDOR :
3251 IEEE80211_PATH_PROTOCOL_HWMP;
3252
3253 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3254 setup->path_metric =
3255 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3256 IEEE80211_PATH_METRIC_VENDOR :
3257 IEEE80211_PATH_METRIC_AIRTIME;
3258
3259
3260 if (tb[NL80211_MESH_SETUP_IE]) {
3261 struct nlattr *ieattr =
3262 tb[NL80211_MESH_SETUP_IE];
3263 if (!is_valid_ie_attr(ieattr))
3264 return -EINVAL;
3265 setup->ie = nla_data(ieattr);
3266 setup->ie_len = nla_len(ieattr);
3267 }
3268 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3269 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3270
3271 return 0;
3272 }
3273
3274 static int nl80211_update_mesh_config(struct sk_buff *skb,
3275 struct genl_info *info)
3276 {
3277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3278 struct net_device *dev = info->user_ptr[1];
3279 struct wireless_dev *wdev = dev->ieee80211_ptr;
3280 struct mesh_config cfg;
3281 u32 mask;
3282 int err;
3283
3284 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3285 return -EOPNOTSUPP;
3286
3287 if (!rdev->ops->update_mesh_config)
3288 return -EOPNOTSUPP;
3289
3290 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3291 if (err)
3292 return err;
3293
3294 wdev_lock(wdev);
3295 if (!wdev->mesh_id_len)
3296 err = -ENOLINK;
3297
3298 if (!err)
3299 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3300 mask, &cfg);
3301
3302 wdev_unlock(wdev);
3303
3304 return err;
3305 }
3306
3307 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3308 {
3309 struct sk_buff *msg;
3310 void *hdr = NULL;
3311 struct nlattr *nl_reg_rules;
3312 unsigned int i;
3313 int err = -EINVAL;
3314
3315 mutex_lock(&cfg80211_mutex);
3316
3317 if (!cfg80211_regdomain)
3318 goto out;
3319
3320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3321 if (!msg) {
3322 err = -ENOBUFS;
3323 goto out;
3324 }
3325
3326 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3327 NL80211_CMD_GET_REG);
3328 if (!hdr)
3329 goto put_failure;
3330
3331 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3332 cfg80211_regdomain->alpha2);
3333
3334 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3335 if (!nl_reg_rules)
3336 goto nla_put_failure;
3337
3338 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3339 struct nlattr *nl_reg_rule;
3340 const struct ieee80211_reg_rule *reg_rule;
3341 const struct ieee80211_freq_range *freq_range;
3342 const struct ieee80211_power_rule *power_rule;
3343
3344 reg_rule = &cfg80211_regdomain->reg_rules[i];
3345 freq_range = &reg_rule->freq_range;
3346 power_rule = &reg_rule->power_rule;
3347
3348 nl_reg_rule = nla_nest_start(msg, i);
3349 if (!nl_reg_rule)
3350 goto nla_put_failure;
3351
3352 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3353 reg_rule->flags);
3354 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3355 freq_range->start_freq_khz);
3356 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3357 freq_range->end_freq_khz);
3358 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3359 freq_range->max_bandwidth_khz);
3360 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3361 power_rule->max_antenna_gain);
3362 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3363 power_rule->max_eirp);
3364
3365 nla_nest_end(msg, nl_reg_rule);
3366 }
3367
3368 nla_nest_end(msg, nl_reg_rules);
3369
3370 genlmsg_end(msg, hdr);
3371 err = genlmsg_reply(msg, info);
3372 goto out;
3373
3374 nla_put_failure:
3375 genlmsg_cancel(msg, hdr);
3376 put_failure:
3377 nlmsg_free(msg);
3378 err = -EMSGSIZE;
3379 out:
3380 mutex_unlock(&cfg80211_mutex);
3381 return err;
3382 }
3383
3384 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3385 {
3386 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3387 struct nlattr *nl_reg_rule;
3388 char *alpha2 = NULL;
3389 int rem_reg_rules = 0, r = 0;
3390 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3391 struct ieee80211_regdomain *rd = NULL;
3392
3393 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3394 return -EINVAL;
3395
3396 if (!info->attrs[NL80211_ATTR_REG_RULES])
3397 return -EINVAL;
3398
3399 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3400
3401 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3402 rem_reg_rules) {
3403 num_rules++;
3404 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3405 return -EINVAL;
3406 }
3407
3408 mutex_lock(&cfg80211_mutex);
3409
3410 if (!reg_is_valid_request(alpha2)) {
3411 r = -EINVAL;
3412 goto bad_reg;
3413 }
3414
3415 size_of_regd = sizeof(struct ieee80211_regdomain) +
3416 (num_rules * sizeof(struct ieee80211_reg_rule));
3417
3418 rd = kzalloc(size_of_regd, GFP_KERNEL);
3419 if (!rd) {
3420 r = -ENOMEM;
3421 goto bad_reg;
3422 }
3423
3424 rd->n_reg_rules = num_rules;
3425 rd->alpha2[0] = alpha2[0];
3426 rd->alpha2[1] = alpha2[1];
3427
3428 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3429 rem_reg_rules) {
3430 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3431 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3432 reg_rule_policy);
3433 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3434 if (r)
3435 goto bad_reg;
3436
3437 rule_idx++;
3438
3439 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3440 r = -EINVAL;
3441 goto bad_reg;
3442 }
3443 }
3444
3445 BUG_ON(rule_idx != num_rules);
3446
3447 r = set_regdom(rd);
3448
3449 mutex_unlock(&cfg80211_mutex);
3450
3451 return r;
3452
3453 bad_reg:
3454 mutex_unlock(&cfg80211_mutex);
3455 kfree(rd);
3456 return r;
3457 }
3458
3459 static int validate_scan_freqs(struct nlattr *freqs)
3460 {
3461 struct nlattr *attr1, *attr2;
3462 int n_channels = 0, tmp1, tmp2;
3463
3464 nla_for_each_nested(attr1, freqs, tmp1) {
3465 n_channels++;
3466 /*
3467 * Some hardware has a limited channel list for
3468 * scanning, and it is pretty much nonsensical
3469 * to scan for a channel twice, so disallow that
3470 * and don't require drivers to check that the
3471 * channel list they get isn't longer than what
3472 * they can scan, as long as they can scan all
3473 * the channels they registered at once.
3474 */
3475 nla_for_each_nested(attr2, freqs, tmp2)
3476 if (attr1 != attr2 &&
3477 nla_get_u32(attr1) == nla_get_u32(attr2))
3478 return 0;
3479 }
3480
3481 return n_channels;
3482 }
3483
3484 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3485 {
3486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3487 struct net_device *dev = info->user_ptr[1];
3488 struct cfg80211_scan_request *request;
3489 struct nlattr *attr;
3490 struct wiphy *wiphy;
3491 int err, tmp, n_ssids = 0, n_channels, i;
3492 size_t ie_len;
3493
3494 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3495 return -EINVAL;
3496
3497 wiphy = &rdev->wiphy;
3498
3499 if (!rdev->ops->scan)
3500 return -EOPNOTSUPP;
3501
3502 if (rdev->scan_req)
3503 return -EBUSY;
3504
3505 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3506 n_channels = validate_scan_freqs(
3507 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3508 if (!n_channels)
3509 return -EINVAL;
3510 } else {
3511 enum ieee80211_band band;
3512 n_channels = 0;
3513
3514 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3515 if (wiphy->bands[band])
3516 n_channels += wiphy->bands[band]->n_channels;
3517 }
3518
3519 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3520 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3521 n_ssids++;
3522
3523 if (n_ssids > wiphy->max_scan_ssids)
3524 return -EINVAL;
3525
3526 if (info->attrs[NL80211_ATTR_IE])
3527 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3528 else
3529 ie_len = 0;
3530
3531 if (ie_len > wiphy->max_scan_ie_len)
3532 return -EINVAL;
3533
3534 request = kzalloc(sizeof(*request)
3535 + sizeof(*request->ssids) * n_ssids
3536 + sizeof(*request->channels) * n_channels
3537 + ie_len, GFP_KERNEL);
3538 if (!request)
3539 return -ENOMEM;
3540
3541 if (n_ssids)
3542 request->ssids = (void *)&request->channels[n_channels];
3543 request->n_ssids = n_ssids;
3544 if (ie_len) {
3545 if (request->ssids)
3546 request->ie = (void *)(request->ssids + n_ssids);
3547 else
3548 request->ie = (void *)(request->channels + n_channels);
3549 }
3550
3551 i = 0;
3552 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3553 /* user specified, bail out if channel not found */
3554 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3555 struct ieee80211_channel *chan;
3556
3557 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3558
3559 if (!chan) {
3560 err = -EINVAL;
3561 goto out_free;
3562 }
3563
3564 /* ignore disabled channels */
3565 if (chan->flags & IEEE80211_CHAN_DISABLED)
3566 continue;
3567
3568 request->channels[i] = chan;
3569 i++;
3570 }
3571 } else {
3572 enum ieee80211_band band;
3573
3574 /* all channels */
3575 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3576 int j;
3577 if (!wiphy->bands[band])
3578 continue;
3579 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3580 struct ieee80211_channel *chan;
3581
3582 chan = &wiphy->bands[band]->channels[j];
3583
3584 if (chan->flags & IEEE80211_CHAN_DISABLED)
3585 continue;
3586
3587 request->channels[i] = chan;
3588 i++;
3589 }
3590 }
3591 }
3592
3593 if (!i) {
3594 err = -EINVAL;
3595 goto out_free;
3596 }
3597
3598 request->n_channels = i;
3599
3600 i = 0;
3601 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3602 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3603 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3604 err = -EINVAL;
3605 goto out_free;
3606 }
3607 request->ssids[i].ssid_len = nla_len(attr);
3608 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3609 i++;
3610 }
3611 }
3612
3613 if (info->attrs[NL80211_ATTR_IE]) {
3614 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3615 memcpy((void *)request->ie,
3616 nla_data(info->attrs[NL80211_ATTR_IE]),
3617 request->ie_len);
3618 }
3619
3620 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3621 if (wiphy->bands[i])
3622 request->rates[i] =
3623 (1 << wiphy->bands[i]->n_bitrates) - 1;
3624
3625 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3626 nla_for_each_nested(attr,
3627 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3628 tmp) {
3629 enum ieee80211_band band = nla_type(attr);
3630
3631 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3632 err = -EINVAL;
3633 goto out_free;
3634 }
3635 err = ieee80211_get_ratemask(wiphy->bands[band],
3636 nla_data(attr),
3637 nla_len(attr),
3638 &request->rates[band]);
3639 if (err)
3640 goto out_free;
3641 }
3642 }
3643
3644 request->no_cck =
3645 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3646
3647 request->dev = dev;
3648 request->wiphy = &rdev->wiphy;
3649
3650 rdev->scan_req = request;
3651 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3652
3653 if (!err) {
3654 nl80211_send_scan_start(rdev, dev);
3655 dev_hold(dev);
3656 } else {
3657 out_free:
3658 rdev->scan_req = NULL;
3659 kfree(request);
3660 }
3661
3662 return err;
3663 }
3664
3665 static int nl80211_start_sched_scan(struct sk_buff *skb,
3666 struct genl_info *info)
3667 {
3668 struct cfg80211_sched_scan_request *request;
3669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3670 struct net_device *dev = info->user_ptr[1];
3671 struct nlattr *attr;
3672 struct wiphy *wiphy;
3673 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3674 u32 interval;
3675 enum ieee80211_band band;
3676 size_t ie_len;
3677 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3678
3679 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3680 !rdev->ops->sched_scan_start)
3681 return -EOPNOTSUPP;
3682
3683 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3684 return -EINVAL;
3685
3686 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3687 return -EINVAL;
3688
3689 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3690 if (interval == 0)
3691 return -EINVAL;
3692
3693 wiphy = &rdev->wiphy;
3694
3695 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3696 n_channels = validate_scan_freqs(
3697 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3698 if (!n_channels)
3699 return -EINVAL;
3700 } else {
3701 n_channels = 0;
3702
3703 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3704 if (wiphy->bands[band])
3705 n_channels += wiphy->bands[band]->n_channels;
3706 }
3707
3708 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3709 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3710 tmp)
3711 n_ssids++;
3712
3713 if (n_ssids > wiphy->max_sched_scan_ssids)
3714 return -EINVAL;
3715
3716 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3717 nla_for_each_nested(attr,
3718 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3719 tmp)
3720 n_match_sets++;
3721
3722 if (n_match_sets > wiphy->max_match_sets)
3723 return -EINVAL;
3724
3725 if (info->attrs[NL80211_ATTR_IE])
3726 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3727 else
3728 ie_len = 0;
3729
3730 if (ie_len > wiphy->max_sched_scan_ie_len)
3731 return -EINVAL;
3732
3733 mutex_lock(&rdev->sched_scan_mtx);
3734
3735 if (rdev->sched_scan_req) {
3736 err = -EINPROGRESS;
3737 goto out;
3738 }
3739
3740 request = kzalloc(sizeof(*request)
3741 + sizeof(*request->ssids) * n_ssids
3742 + sizeof(*request->match_sets) * n_match_sets
3743 + sizeof(*request->channels) * n_channels
3744 + ie_len, GFP_KERNEL);
3745 if (!request) {
3746 err = -ENOMEM;
3747 goto out;
3748 }
3749
3750 if (n_ssids)
3751 request->ssids = (void *)&request->channels[n_channels];
3752 request->n_ssids = n_ssids;
3753 if (ie_len) {
3754 if (request->ssids)
3755 request->ie = (void *)(request->ssids + n_ssids);
3756 else
3757 request->ie = (void *)(request->channels + n_channels);
3758 }
3759
3760 if (n_match_sets) {
3761 if (request->ie)
3762 request->match_sets = (void *)(request->ie + ie_len);
3763 else if (request->ssids)
3764 request->match_sets =
3765 (void *)(request->ssids + n_ssids);
3766 else
3767 request->match_sets =
3768 (void *)(request->channels + n_channels);
3769 }
3770 request->n_match_sets = n_match_sets;
3771
3772 i = 0;
3773 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3774 /* user specified, bail out if channel not found */
3775 nla_for_each_nested(attr,
3776 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3777 tmp) {
3778 struct ieee80211_channel *chan;
3779
3780 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3781
3782 if (!chan) {
3783 err = -EINVAL;
3784 goto out_free;
3785 }
3786
3787 /* ignore disabled channels */
3788 if (chan->flags & IEEE80211_CHAN_DISABLED)
3789 continue;
3790
3791 request->channels[i] = chan;
3792 i++;
3793 }
3794 } else {
3795 /* all channels */
3796 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3797 int j;
3798 if (!wiphy->bands[band])
3799 continue;
3800 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3801 struct ieee80211_channel *chan;
3802
3803 chan = &wiphy->bands[band]->channels[j];
3804
3805 if (chan->flags & IEEE80211_CHAN_DISABLED)
3806 continue;
3807
3808 request->channels[i] = chan;
3809 i++;
3810 }
3811 }
3812 }
3813
3814 if (!i) {
3815 err = -EINVAL;
3816 goto out_free;
3817 }
3818
3819 request->n_channels = i;
3820
3821 i = 0;
3822 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3823 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3824 tmp) {
3825 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3826 err = -EINVAL;
3827 goto out_free;
3828 }
3829 request->ssids[i].ssid_len = nla_len(attr);
3830 memcpy(request->ssids[i].ssid, nla_data(attr),
3831 nla_len(attr));
3832 i++;
3833 }
3834 }
3835
3836 i = 0;
3837 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3838 nla_for_each_nested(attr,
3839 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3840 tmp) {
3841 struct nlattr *ssid;
3842
3843 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3844 nla_data(attr), nla_len(attr),
3845 nl80211_match_policy);
3846 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3847 if (ssid) {
3848 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3849 err = -EINVAL;
3850 goto out_free;
3851 }
3852 memcpy(request->match_sets[i].ssid.ssid,
3853 nla_data(ssid), nla_len(ssid));
3854 request->match_sets[i].ssid.ssid_len =
3855 nla_len(ssid);
3856 }
3857 i++;
3858 }
3859 }
3860
3861 if (info->attrs[NL80211_ATTR_IE]) {
3862 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3863 memcpy((void *)request->ie,
3864 nla_data(info->attrs[NL80211_ATTR_IE]),
3865 request->ie_len);
3866 }
3867
3868 request->dev = dev;
3869 request->wiphy = &rdev->wiphy;
3870 request->interval = interval;
3871
3872 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3873 if (!err) {
3874 rdev->sched_scan_req = request;
3875 nl80211_send_sched_scan(rdev, dev,
3876 NL80211_CMD_START_SCHED_SCAN);
3877 goto out;
3878 }
3879
3880 out_free:
3881 kfree(request);
3882 out:
3883 mutex_unlock(&rdev->sched_scan_mtx);
3884 return err;
3885 }
3886
3887 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3888 struct genl_info *info)
3889 {
3890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3891 int err;
3892
3893 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3894 !rdev->ops->sched_scan_stop)
3895 return -EOPNOTSUPP;
3896
3897 mutex_lock(&rdev->sched_scan_mtx);
3898 err = __cfg80211_stop_sched_scan(rdev, false);
3899 mutex_unlock(&rdev->sched_scan_mtx);
3900
3901 return err;
3902 }
3903
3904 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3905 u32 seq, int flags,
3906 struct cfg80211_registered_device *rdev,
3907 struct wireless_dev *wdev,
3908 struct cfg80211_internal_bss *intbss)
3909 {
3910 struct cfg80211_bss *res = &intbss->pub;
3911 void *hdr;
3912 struct nlattr *bss;
3913 int i;
3914
3915 ASSERT_WDEV_LOCK(wdev);
3916
3917 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3918 NL80211_CMD_NEW_SCAN_RESULTS);
3919 if (!hdr)
3920 return -1;
3921
3922 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3923
3924 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3925 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3926
3927 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3928 if (!bss)
3929 goto nla_put_failure;
3930 if (!is_zero_ether_addr(res->bssid))
3931 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3932 if (res->information_elements && res->len_information_elements)
3933 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3934 res->len_information_elements,
3935 res->information_elements);
3936 if (res->beacon_ies && res->len_beacon_ies &&
3937 res->beacon_ies != res->information_elements)
3938 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3939 res->len_beacon_ies, res->beacon_ies);
3940 if (res->tsf)
3941 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3942 if (res->beacon_interval)
3943 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3944 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3945 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3946 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3947 jiffies_to_msecs(jiffies - intbss->ts));
3948
3949 switch (rdev->wiphy.signal_type) {
3950 case CFG80211_SIGNAL_TYPE_MBM:
3951 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3952 break;
3953 case CFG80211_SIGNAL_TYPE_UNSPEC:
3954 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3955 break;
3956 default:
3957 break;
3958 }
3959
3960 switch (wdev->iftype) {
3961 case NL80211_IFTYPE_P2P_CLIENT:
3962 case NL80211_IFTYPE_STATION:
3963 if (intbss == wdev->current_bss)
3964 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3965 NL80211_BSS_STATUS_ASSOCIATED);
3966 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3967 if (intbss != wdev->auth_bsses[i])
3968 continue;
3969 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3970 NL80211_BSS_STATUS_AUTHENTICATED);
3971 break;
3972 }
3973 break;
3974 case NL80211_IFTYPE_ADHOC:
3975 if (intbss == wdev->current_bss)
3976 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3977 NL80211_BSS_STATUS_IBSS_JOINED);
3978 break;
3979 default:
3980 break;
3981 }
3982
3983 nla_nest_end(msg, bss);
3984
3985 return genlmsg_end(msg, hdr);
3986
3987 nla_put_failure:
3988 genlmsg_cancel(msg, hdr);
3989 return -EMSGSIZE;
3990 }
3991
3992 static int nl80211_dump_scan(struct sk_buff *skb,
3993 struct netlink_callback *cb)
3994 {
3995 struct cfg80211_registered_device *rdev;
3996 struct net_device *dev;
3997 struct cfg80211_internal_bss *scan;
3998 struct wireless_dev *wdev;
3999 int start = cb->args[1], idx = 0;
4000 int err;
4001
4002 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4003 if (err)
4004 return err;
4005
4006 wdev = dev->ieee80211_ptr;
4007
4008 wdev_lock(wdev);
4009 spin_lock_bh(&rdev->bss_lock);
4010 cfg80211_bss_expire(rdev);
4011
4012 cb->seq = rdev->bss_generation;
4013
4014 list_for_each_entry(scan, &rdev->bss_list, list) {
4015 if (++idx <= start)
4016 continue;
4017 if (nl80211_send_bss(skb, cb,
4018 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4019 rdev, wdev, scan) < 0) {
4020 idx--;
4021 break;
4022 }
4023 }
4024
4025 spin_unlock_bh(&rdev->bss_lock);
4026 wdev_unlock(wdev);
4027
4028 cb->args[1] = idx;
4029 nl80211_finish_netdev_dump(rdev);
4030
4031 return skb->len;
4032 }
4033
4034 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4035 int flags, struct net_device *dev,
4036 struct survey_info *survey)
4037 {
4038 void *hdr;
4039 struct nlattr *infoattr;
4040
4041 hdr = nl80211hdr_put(msg, pid, seq, flags,
4042 NL80211_CMD_NEW_SURVEY_RESULTS);
4043 if (!hdr)
4044 return -ENOMEM;
4045
4046 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4047
4048 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4049 if (!infoattr)
4050 goto nla_put_failure;
4051
4052 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4053 survey->channel->center_freq);
4054 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4055 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4056 survey->noise);
4057 if (survey->filled & SURVEY_INFO_IN_USE)
4058 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4059 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4060 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4061 survey->channel_time);
4062 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4063 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4064 survey->channel_time_busy);
4065 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4066 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4067 survey->channel_time_ext_busy);
4068 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4069 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4070 survey->channel_time_rx);
4071 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4072 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4073 survey->channel_time_tx);
4074
4075 nla_nest_end(msg, infoattr);
4076
4077 return genlmsg_end(msg, hdr);
4078
4079 nla_put_failure:
4080 genlmsg_cancel(msg, hdr);
4081 return -EMSGSIZE;
4082 }
4083
4084 static int nl80211_dump_survey(struct sk_buff *skb,
4085 struct netlink_callback *cb)
4086 {
4087 struct survey_info survey;
4088 struct cfg80211_registered_device *dev;
4089 struct net_device *netdev;
4090 int survey_idx = cb->args[1];
4091 int res;
4092
4093 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4094 if (res)
4095 return res;
4096
4097 if (!dev->ops->dump_survey) {
4098 res = -EOPNOTSUPP;
4099 goto out_err;
4100 }
4101
4102 while (1) {
4103 struct ieee80211_channel *chan;
4104
4105 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4106 &survey);
4107 if (res == -ENOENT)
4108 break;
4109 if (res)
4110 goto out_err;
4111
4112 /* Survey without a channel doesn't make sense */
4113 if (!survey.channel) {
4114 res = -EINVAL;
4115 goto out;
4116 }
4117
4118 chan = ieee80211_get_channel(&dev->wiphy,
4119 survey.channel->center_freq);
4120 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4121 survey_idx++;
4122 continue;
4123 }
4124
4125 if (nl80211_send_survey(skb,
4126 NETLINK_CB(cb->skb).pid,
4127 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4128 netdev,
4129 &survey) < 0)
4130 goto out;
4131 survey_idx++;
4132 }
4133
4134 out:
4135 cb->args[1] = survey_idx;
4136 res = skb->len;
4137 out_err:
4138 nl80211_finish_netdev_dump(dev);
4139 return res;
4140 }
4141
4142 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4143 {
4144 return auth_type <= NL80211_AUTHTYPE_MAX;
4145 }
4146
4147 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4148 {
4149 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4150 NL80211_WPA_VERSION_2));
4151 }
4152
4153 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4154 {
4155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4156 struct net_device *dev = info->user_ptr[1];
4157 struct ieee80211_channel *chan;
4158 const u8 *bssid, *ssid, *ie = NULL;
4159 int err, ssid_len, ie_len = 0;
4160 enum nl80211_auth_type auth_type;
4161 struct key_parse key;
4162 bool local_state_change;
4163
4164 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4165 return -EINVAL;
4166
4167 if (!info->attrs[NL80211_ATTR_MAC])
4168 return -EINVAL;
4169
4170 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4171 return -EINVAL;
4172
4173 if (!info->attrs[NL80211_ATTR_SSID])
4174 return -EINVAL;
4175
4176 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4177 return -EINVAL;
4178
4179 err = nl80211_parse_key(info, &key);
4180 if (err)
4181 return err;
4182
4183 if (key.idx >= 0) {
4184 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4185 return -EINVAL;
4186 if (!key.p.key || !key.p.key_len)
4187 return -EINVAL;
4188 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4189 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4190 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4191 key.p.key_len != WLAN_KEY_LEN_WEP104))
4192 return -EINVAL;
4193 if (key.idx > 4)
4194 return -EINVAL;
4195 } else {
4196 key.p.key_len = 0;
4197 key.p.key = NULL;
4198 }
4199
4200 if (key.idx >= 0) {
4201 int i;
4202 bool ok = false;
4203 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4204 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4205 ok = true;
4206 break;
4207 }
4208 }
4209 if (!ok)
4210 return -EINVAL;
4211 }
4212
4213 if (!rdev->ops->auth)
4214 return -EOPNOTSUPP;
4215
4216 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4217 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4218 return -EOPNOTSUPP;
4219
4220 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4221 chan = ieee80211_get_channel(&rdev->wiphy,
4222 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4223 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4224 return -EINVAL;
4225
4226 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4227 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4228
4229 if (info->attrs[NL80211_ATTR_IE]) {
4230 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4231 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4232 }
4233
4234 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4235 if (!nl80211_valid_auth_type(auth_type))
4236 return -EINVAL;
4237
4238 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4239
4240 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4241 ssid, ssid_len, ie, ie_len,
4242 key.p.key, key.p.key_len, key.idx,
4243 local_state_change);
4244 }
4245
4246 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4247 struct genl_info *info,
4248 struct cfg80211_crypto_settings *settings,
4249 int cipher_limit)
4250 {
4251 memset(settings, 0, sizeof(*settings));
4252
4253 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4254
4255 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4256 u16 proto;
4257 proto = nla_get_u16(
4258 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4259 settings->control_port_ethertype = cpu_to_be16(proto);
4260 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4261 proto != ETH_P_PAE)
4262 return -EINVAL;
4263 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4264 settings->control_port_no_encrypt = true;
4265 } else
4266 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4267
4268 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4269 void *data;
4270 int len, i;
4271
4272 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4273 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4274 settings->n_ciphers_pairwise = len / sizeof(u32);
4275
4276 if (len % sizeof(u32))
4277 return -EINVAL;
4278
4279 if (settings->n_ciphers_pairwise > cipher_limit)
4280 return -EINVAL;
4281
4282 memcpy(settings->ciphers_pairwise, data, len);
4283
4284 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4285 if (!cfg80211_supported_cipher_suite(
4286 &rdev->wiphy,
4287 settings->ciphers_pairwise[i]))
4288 return -EINVAL;
4289 }
4290
4291 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4292 settings->cipher_group =
4293 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4294 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4295 settings->cipher_group))
4296 return -EINVAL;
4297 }
4298
4299 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4300 settings->wpa_versions =
4301 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4302 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4303 return -EINVAL;
4304 }
4305
4306 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4307 void *data;
4308 int len;
4309
4310 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4311 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4312 settings->n_akm_suites = len / sizeof(u32);
4313
4314 if (len % sizeof(u32))
4315 return -EINVAL;
4316
4317 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4318 return -EINVAL;
4319
4320 memcpy(settings->akm_suites, data, len);
4321 }
4322
4323 return 0;
4324 }
4325
4326 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4327 {
4328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4329 struct net_device *dev = info->user_ptr[1];
4330 struct cfg80211_crypto_settings crypto;
4331 struct ieee80211_channel *chan;
4332 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4333 int err, ssid_len, ie_len = 0;
4334 bool use_mfp = false;
4335
4336 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4337 return -EINVAL;
4338
4339 if (!info->attrs[NL80211_ATTR_MAC] ||
4340 !info->attrs[NL80211_ATTR_SSID] ||
4341 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4342 return -EINVAL;
4343
4344 if (!rdev->ops->assoc)
4345 return -EOPNOTSUPP;
4346
4347 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4348 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4349 return -EOPNOTSUPP;
4350
4351 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4352
4353 chan = ieee80211_get_channel(&rdev->wiphy,
4354 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4355 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4356 return -EINVAL;
4357
4358 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4359 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4360
4361 if (info->attrs[NL80211_ATTR_IE]) {
4362 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4363 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4364 }
4365
4366 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4367 enum nl80211_mfp mfp =
4368 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4369 if (mfp == NL80211_MFP_REQUIRED)
4370 use_mfp = true;
4371 else if (mfp != NL80211_MFP_NO)
4372 return -EINVAL;
4373 }
4374
4375 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4376 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4377
4378 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4379 if (!err)
4380 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4381 ssid, ssid_len, ie, ie_len, use_mfp,
4382 &crypto);
4383
4384 return err;
4385 }
4386
4387 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4388 {
4389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4390 struct net_device *dev = info->user_ptr[1];
4391 const u8 *ie = NULL, *bssid;
4392 int ie_len = 0;
4393 u16 reason_code;
4394 bool local_state_change;
4395
4396 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4397 return -EINVAL;
4398
4399 if (!info->attrs[NL80211_ATTR_MAC])
4400 return -EINVAL;
4401
4402 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4403 return -EINVAL;
4404
4405 if (!rdev->ops->deauth)
4406 return -EOPNOTSUPP;
4407
4408 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4410 return -EOPNOTSUPP;
4411
4412 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4413
4414 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4415 if (reason_code == 0) {
4416 /* Reason Code 0 is reserved */
4417 return -EINVAL;
4418 }
4419
4420 if (info->attrs[NL80211_ATTR_IE]) {
4421 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4422 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4423 }
4424
4425 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4426
4427 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4428 local_state_change);
4429 }
4430
4431 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4432 {
4433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4434 struct net_device *dev = info->user_ptr[1];
4435 const u8 *ie = NULL, *bssid;
4436 int ie_len = 0;
4437 u16 reason_code;
4438 bool local_state_change;
4439
4440 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4441 return -EINVAL;
4442
4443 if (!info->attrs[NL80211_ATTR_MAC])
4444 return -EINVAL;
4445
4446 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4447 return -EINVAL;
4448
4449 if (!rdev->ops->disassoc)
4450 return -EOPNOTSUPP;
4451
4452 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4453 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4454 return -EOPNOTSUPP;
4455
4456 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4457
4458 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4459 if (reason_code == 0) {
4460 /* Reason Code 0 is reserved */
4461 return -EINVAL;
4462 }
4463
4464 if (info->attrs[NL80211_ATTR_IE]) {
4465 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4466 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4467 }
4468
4469 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4470
4471 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4472 local_state_change);
4473 }
4474
4475 static bool
4476 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4477 int mcast_rate[IEEE80211_NUM_BANDS],
4478 int rateval)
4479 {
4480 struct wiphy *wiphy = &rdev->wiphy;
4481 bool found = false;
4482 int band, i;
4483
4484 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4485 struct ieee80211_supported_band *sband;
4486
4487 sband = wiphy->bands[band];
4488 if (!sband)
4489 continue;
4490
4491 for (i = 0; i < sband->n_bitrates; i++) {
4492 if (sband->bitrates[i].bitrate == rateval) {
4493 mcast_rate[band] = i + 1;
4494 found = true;
4495 break;
4496 }
4497 }
4498 }
4499
4500 return found;
4501 }
4502
4503 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4504 {
4505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4506 struct net_device *dev = info->user_ptr[1];
4507 struct cfg80211_ibss_params ibss;
4508 struct wiphy *wiphy;
4509 struct cfg80211_cached_keys *connkeys = NULL;
4510 int err;
4511
4512 memset(&ibss, 0, sizeof(ibss));
4513
4514 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4515 return -EINVAL;
4516
4517 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4518 !info->attrs[NL80211_ATTR_SSID] ||
4519 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4520 return -EINVAL;
4521
4522 ibss.beacon_interval = 100;
4523
4524 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4525 ibss.beacon_interval =
4526 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4527 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4528 return -EINVAL;
4529 }
4530
4531 if (!rdev->ops->join_ibss)
4532 return -EOPNOTSUPP;
4533
4534 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4535 return -EOPNOTSUPP;
4536
4537 wiphy = &rdev->wiphy;
4538
4539 if (info->attrs[NL80211_ATTR_MAC]) {
4540 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4541
4542 if (!is_valid_ether_addr(ibss.bssid))
4543 return -EINVAL;
4544 }
4545 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4546 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4547
4548 if (info->attrs[NL80211_ATTR_IE]) {
4549 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4550 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4551 }
4552
4553 ibss.channel = ieee80211_get_channel(wiphy,
4554 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4555 if (!ibss.channel ||
4556 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4557 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4558 return -EINVAL;
4559
4560 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4561 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4562
4563 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4564 u8 *rates =
4565 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4566 int n_rates =
4567 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4568 struct ieee80211_supported_band *sband =
4569 wiphy->bands[ibss.channel->band];
4570 int err;
4571
4572 err = ieee80211_get_ratemask(sband, rates, n_rates,
4573 &ibss.basic_rates);
4574 if (err)
4575 return err;
4576 }
4577
4578 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4579 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4580 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4581 return -EINVAL;
4582
4583 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4584 connkeys = nl80211_parse_connkeys(rdev,
4585 info->attrs[NL80211_ATTR_KEYS]);
4586 if (IS_ERR(connkeys))
4587 return PTR_ERR(connkeys);
4588 }
4589
4590 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4591 if (err)
4592 kfree(connkeys);
4593 return err;
4594 }
4595
4596 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4597 {
4598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4599 struct net_device *dev = info->user_ptr[1];
4600
4601 if (!rdev->ops->leave_ibss)
4602 return -EOPNOTSUPP;
4603
4604 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4605 return -EOPNOTSUPP;
4606
4607 return cfg80211_leave_ibss(rdev, dev, false);
4608 }
4609
4610 #ifdef CONFIG_NL80211_TESTMODE
4611 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4612 .name = "testmode",
4613 };
4614
4615 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4616 {
4617 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4618 int err;
4619
4620 if (!info->attrs[NL80211_ATTR_TESTDATA])
4621 return -EINVAL;
4622
4623 err = -EOPNOTSUPP;
4624 if (rdev->ops->testmode_cmd) {
4625 rdev->testmode_info = info;
4626 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4627 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4628 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4629 rdev->testmode_info = NULL;
4630 }
4631
4632 return err;
4633 }
4634
4635 static int nl80211_testmode_dump(struct sk_buff *skb,
4636 struct netlink_callback *cb)
4637 {
4638 struct cfg80211_registered_device *dev;
4639 int err;
4640 long phy_idx;
4641 void *data = NULL;
4642 int data_len = 0;
4643
4644 if (cb->args[0]) {
4645 /*
4646 * 0 is a valid index, but not valid for args[0],
4647 * so we need to offset by 1.
4648 */
4649 phy_idx = cb->args[0] - 1;
4650 } else {
4651 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4652 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4653 nl80211_policy);
4654 if (err)
4655 return err;
4656 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4657 return -EINVAL;
4658 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4659 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4660 cb->args[1] =
4661 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4662 }
4663
4664 if (cb->args[1]) {
4665 data = nla_data((void *)cb->args[1]);
4666 data_len = nla_len((void *)cb->args[1]);
4667 }
4668
4669 mutex_lock(&cfg80211_mutex);
4670 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4671 if (!dev) {
4672 mutex_unlock(&cfg80211_mutex);
4673 return -ENOENT;
4674 }
4675 cfg80211_lock_rdev(dev);
4676 mutex_unlock(&cfg80211_mutex);
4677
4678 if (!dev->ops->testmode_dump) {
4679 err = -EOPNOTSUPP;
4680 goto out_err;
4681 }
4682
4683 while (1) {
4684 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4685 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4686 NL80211_CMD_TESTMODE);
4687 struct nlattr *tmdata;
4688
4689 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4690 genlmsg_cancel(skb, hdr);
4691 break;
4692 }
4693
4694 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4695 if (!tmdata) {
4696 genlmsg_cancel(skb, hdr);
4697 break;
4698 }
4699 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4700 data, data_len);
4701 nla_nest_end(skb, tmdata);
4702
4703 if (err == -ENOBUFS || err == -ENOENT) {
4704 genlmsg_cancel(skb, hdr);
4705 break;
4706 } else if (err) {
4707 genlmsg_cancel(skb, hdr);
4708 goto out_err;
4709 }
4710
4711 genlmsg_end(skb, hdr);
4712 }
4713
4714 err = skb->len;
4715 /* see above */
4716 cb->args[0] = phy_idx + 1;
4717 out_err:
4718 cfg80211_unlock_rdev(dev);
4719 return err;
4720 }
4721
4722 static struct sk_buff *
4723 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4724 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4725 {
4726 struct sk_buff *skb;
4727 void *hdr;
4728 struct nlattr *data;
4729
4730 skb = nlmsg_new(approxlen + 100, gfp);
4731 if (!skb)
4732 return NULL;
4733
4734 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4735 if (!hdr) {
4736 kfree_skb(skb);
4737 return NULL;
4738 }
4739
4740 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4741 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4742
4743 ((void **)skb->cb)[0] = rdev;
4744 ((void **)skb->cb)[1] = hdr;
4745 ((void **)skb->cb)[2] = data;
4746
4747 return skb;
4748
4749 nla_put_failure:
4750 kfree_skb(skb);
4751 return NULL;
4752 }
4753
4754 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4755 int approxlen)
4756 {
4757 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4758
4759 if (WARN_ON(!rdev->testmode_info))
4760 return NULL;
4761
4762 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4763 rdev->testmode_info->snd_pid,
4764 rdev->testmode_info->snd_seq,
4765 GFP_KERNEL);
4766 }
4767 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4768
4769 int cfg80211_testmode_reply(struct sk_buff *skb)
4770 {
4771 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4772 void *hdr = ((void **)skb->cb)[1];
4773 struct nlattr *data = ((void **)skb->cb)[2];
4774
4775 if (WARN_ON(!rdev->testmode_info)) {
4776 kfree_skb(skb);
4777 return -EINVAL;
4778 }
4779
4780 nla_nest_end(skb, data);
4781 genlmsg_end(skb, hdr);
4782 return genlmsg_reply(skb, rdev->testmode_info);
4783 }
4784 EXPORT_SYMBOL(cfg80211_testmode_reply);
4785
4786 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4787 int approxlen, gfp_t gfp)
4788 {
4789 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4790
4791 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4792 }
4793 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4794
4795 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4796 {
4797 void *hdr = ((void **)skb->cb)[1];
4798 struct nlattr *data = ((void **)skb->cb)[2];
4799
4800 nla_nest_end(skb, data);
4801 genlmsg_end(skb, hdr);
4802 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4803 }
4804 EXPORT_SYMBOL(cfg80211_testmode_event);
4805 #endif
4806
4807 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4808 {
4809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4810 struct net_device *dev = info->user_ptr[1];
4811 struct cfg80211_connect_params connect;
4812 struct wiphy *wiphy;
4813 struct cfg80211_cached_keys *connkeys = NULL;
4814 int err;
4815
4816 memset(&connect, 0, sizeof(connect));
4817
4818 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4819 return -EINVAL;
4820
4821 if (!info->attrs[NL80211_ATTR_SSID] ||
4822 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4823 return -EINVAL;
4824
4825 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4826 connect.auth_type =
4827 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4828 if (!nl80211_valid_auth_type(connect.auth_type))
4829 return -EINVAL;
4830 } else
4831 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4832
4833 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4834
4835 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4836 NL80211_MAX_NR_CIPHER_SUITES);
4837 if (err)
4838 return err;
4839
4840 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4841 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4842 return -EOPNOTSUPP;
4843
4844 wiphy = &rdev->wiphy;
4845
4846 if (info->attrs[NL80211_ATTR_MAC])
4847 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4848 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4849 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4850
4851 if (info->attrs[NL80211_ATTR_IE]) {
4852 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4853 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4854 }
4855
4856 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4857 connect.channel =
4858 ieee80211_get_channel(wiphy,
4859 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4860 if (!connect.channel ||
4861 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4862 return -EINVAL;
4863 }
4864
4865 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4866 connkeys = nl80211_parse_connkeys(rdev,
4867 info->attrs[NL80211_ATTR_KEYS]);
4868 if (IS_ERR(connkeys))
4869 return PTR_ERR(connkeys);
4870 }
4871
4872 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4873 if (err)
4874 kfree(connkeys);
4875 return err;
4876 }
4877
4878 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4879 {
4880 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4881 struct net_device *dev = info->user_ptr[1];
4882 u16 reason;
4883
4884 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4885 reason = WLAN_REASON_DEAUTH_LEAVING;
4886 else
4887 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4888
4889 if (reason == 0)
4890 return -EINVAL;
4891
4892 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4893 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4894 return -EOPNOTSUPP;
4895
4896 return cfg80211_disconnect(rdev, dev, reason, true);
4897 }
4898
4899 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4900 {
4901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4902 struct net *net;
4903 int err;
4904 u32 pid;
4905
4906 if (!info->attrs[NL80211_ATTR_PID])
4907 return -EINVAL;
4908
4909 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4910
4911 net = get_net_ns_by_pid(pid);
4912 if (IS_ERR(net))
4913 return PTR_ERR(net);
4914
4915 err = 0;
4916
4917 /* check if anything to do */
4918 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4919 err = cfg80211_switch_netns(rdev, net);
4920
4921 put_net(net);
4922 return err;
4923 }
4924
4925 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4926 {
4927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4928 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4929 struct cfg80211_pmksa *pmksa) = NULL;
4930 struct net_device *dev = info->user_ptr[1];
4931 struct cfg80211_pmksa pmksa;
4932
4933 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4934
4935 if (!info->attrs[NL80211_ATTR_MAC])
4936 return -EINVAL;
4937
4938 if (!info->attrs[NL80211_ATTR_PMKID])
4939 return -EINVAL;
4940
4941 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4942 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4943
4944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4945 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4946 return -EOPNOTSUPP;
4947
4948 switch (info->genlhdr->cmd) {
4949 case NL80211_CMD_SET_PMKSA:
4950 rdev_ops = rdev->ops->set_pmksa;
4951 break;
4952 case NL80211_CMD_DEL_PMKSA:
4953 rdev_ops = rdev->ops->del_pmksa;
4954 break;
4955 default:
4956 WARN_ON(1);
4957 break;
4958 }
4959
4960 if (!rdev_ops)
4961 return -EOPNOTSUPP;
4962
4963 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4964 }
4965
4966 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4967 {
4968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4969 struct net_device *dev = info->user_ptr[1];
4970
4971 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4972 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4973 return -EOPNOTSUPP;
4974
4975 if (!rdev->ops->flush_pmksa)
4976 return -EOPNOTSUPP;
4977
4978 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4979 }
4980
4981 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
4982 {
4983 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4984 struct net_device *dev = info->user_ptr[1];
4985 u8 action_code, dialog_token;
4986 u16 status_code;
4987 u8 *peer;
4988
4989 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
4990 !rdev->ops->tdls_mgmt)
4991 return -EOPNOTSUPP;
4992
4993 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
4994 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
4995 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
4996 !info->attrs[NL80211_ATTR_IE] ||
4997 !info->attrs[NL80211_ATTR_MAC])
4998 return -EINVAL;
4999
5000 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5001 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5002 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5003 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5004
5005 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5006 dialog_token, status_code,
5007 nla_data(info->attrs[NL80211_ATTR_IE]),
5008 nla_len(info->attrs[NL80211_ATTR_IE]));
5009 }
5010
5011 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5012 {
5013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5014 struct net_device *dev = info->user_ptr[1];
5015 enum nl80211_tdls_operation operation;
5016 u8 *peer;
5017
5018 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5019 !rdev->ops->tdls_oper)
5020 return -EOPNOTSUPP;
5021
5022 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5023 !info->attrs[NL80211_ATTR_MAC])
5024 return -EINVAL;
5025
5026 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5027 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5028
5029 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5030 }
5031
5032 static int nl80211_remain_on_channel(struct sk_buff *skb,
5033 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 struct ieee80211_channel *chan;
5038 struct sk_buff *msg;
5039 void *hdr;
5040 u64 cookie;
5041 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5042 u32 freq, duration;
5043 int err;
5044
5045 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5046 !info->attrs[NL80211_ATTR_DURATION])
5047 return -EINVAL;
5048
5049 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5050
5051 /*
5052 * We should be on that channel for at least one jiffie,
5053 * and more than 5 seconds seems excessive.
5054 */
5055 if (!duration || !msecs_to_jiffies(duration) ||
5056 duration > rdev->wiphy.max_remain_on_channel_duration)
5057 return -EINVAL;
5058
5059 if (!rdev->ops->remain_on_channel)
5060 return -EOPNOTSUPP;
5061
5062 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5063 channel_type = nla_get_u32(
5064 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5065 if (channel_type != NL80211_CHAN_NO_HT &&
5066 channel_type != NL80211_CHAN_HT20 &&
5067 channel_type != NL80211_CHAN_HT40PLUS &&
5068 channel_type != NL80211_CHAN_HT40MINUS)
5069 return -EINVAL;
5070 }
5071
5072 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5073 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5074 if (chan == NULL)
5075 return -EINVAL;
5076
5077 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5078 if (!msg)
5079 return -ENOMEM;
5080
5081 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5082 NL80211_CMD_REMAIN_ON_CHANNEL);
5083
5084 if (IS_ERR(hdr)) {
5085 err = PTR_ERR(hdr);
5086 goto free_msg;
5087 }
5088
5089 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5090 channel_type, duration, &cookie);
5091
5092 if (err)
5093 goto free_msg;
5094
5095 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5096
5097 genlmsg_end(msg, hdr);
5098
5099 return genlmsg_reply(msg, info);
5100
5101 nla_put_failure:
5102 err = -ENOBUFS;
5103 free_msg:
5104 nlmsg_free(msg);
5105 return err;
5106 }
5107
5108 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5109 struct genl_info *info)
5110 {
5111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5112 struct net_device *dev = info->user_ptr[1];
5113 u64 cookie;
5114
5115 if (!info->attrs[NL80211_ATTR_COOKIE])
5116 return -EINVAL;
5117
5118 if (!rdev->ops->cancel_remain_on_channel)
5119 return -EOPNOTSUPP;
5120
5121 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5122
5123 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5124 }
5125
5126 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5127 u8 *rates, u8 rates_len)
5128 {
5129 u8 i;
5130 u32 mask = 0;
5131
5132 for (i = 0; i < rates_len; i++) {
5133 int rate = (rates[i] & 0x7f) * 5;
5134 int ridx;
5135 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5136 struct ieee80211_rate *srate =
5137 &sband->bitrates[ridx];
5138 if (rate == srate->bitrate) {
5139 mask |= 1 << ridx;
5140 break;
5141 }
5142 }
5143 if (ridx == sband->n_bitrates)
5144 return 0; /* rate not found */
5145 }
5146
5147 return mask;
5148 }
5149
5150 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5151 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5152 .len = NL80211_MAX_SUPP_RATES },
5153 };
5154
5155 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5156 struct genl_info *info)
5157 {
5158 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5160 struct cfg80211_bitrate_mask mask;
5161 int rem, i;
5162 struct net_device *dev = info->user_ptr[1];
5163 struct nlattr *tx_rates;
5164 struct ieee80211_supported_band *sband;
5165
5166 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5167 return -EINVAL;
5168
5169 if (!rdev->ops->set_bitrate_mask)
5170 return -EOPNOTSUPP;
5171
5172 memset(&mask, 0, sizeof(mask));
5173 /* Default to all rates enabled */
5174 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5175 sband = rdev->wiphy.bands[i];
5176 mask.control[i].legacy =
5177 sband ? (1 << sband->n_bitrates) - 1 : 0;
5178 }
5179
5180 /*
5181 * The nested attribute uses enum nl80211_band as the index. This maps
5182 * directly to the enum ieee80211_band values used in cfg80211.
5183 */
5184 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5185 {
5186 enum ieee80211_band band = nla_type(tx_rates);
5187 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5188 return -EINVAL;
5189 sband = rdev->wiphy.bands[band];
5190 if (sband == NULL)
5191 return -EINVAL;
5192 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5193 nla_len(tx_rates), nl80211_txattr_policy);
5194 if (tb[NL80211_TXRATE_LEGACY]) {
5195 mask.control[band].legacy = rateset_to_mask(
5196 sband,
5197 nla_data(tb[NL80211_TXRATE_LEGACY]),
5198 nla_len(tb[NL80211_TXRATE_LEGACY]));
5199 if (mask.control[band].legacy == 0)
5200 return -EINVAL;
5201 }
5202 }
5203
5204 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5205 }
5206
5207 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5208 {
5209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5210 struct net_device *dev = info->user_ptr[1];
5211 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5212
5213 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5214 return -EINVAL;
5215
5216 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5217 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5218
5219 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5220 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5221 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5222 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5223 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5224 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5225 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5226 return -EOPNOTSUPP;
5227
5228 /* not much point in registering if we can't reply */
5229 if (!rdev->ops->mgmt_tx)
5230 return -EOPNOTSUPP;
5231
5232 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5233 frame_type,
5234 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5235 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5236 }
5237
5238 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5239 {
5240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5241 struct net_device *dev = info->user_ptr[1];
5242 struct ieee80211_channel *chan;
5243 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5244 bool channel_type_valid = false;
5245 u32 freq;
5246 int err;
5247 void *hdr;
5248 u64 cookie;
5249 struct sk_buff *msg;
5250 unsigned int wait = 0;
5251 bool offchan;
5252 bool no_cck;
5253
5254 if (!info->attrs[NL80211_ATTR_FRAME] ||
5255 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5256 return -EINVAL;
5257
5258 if (!rdev->ops->mgmt_tx)
5259 return -EOPNOTSUPP;
5260
5261 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5265 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5266 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5267 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5268 return -EOPNOTSUPP;
5269
5270 if (info->attrs[NL80211_ATTR_DURATION]) {
5271 if (!rdev->ops->mgmt_tx_cancel_wait)
5272 return -EINVAL;
5273 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5274 }
5275
5276 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5277 channel_type = nla_get_u32(
5278 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5279 if (channel_type != NL80211_CHAN_NO_HT &&
5280 channel_type != NL80211_CHAN_HT20 &&
5281 channel_type != NL80211_CHAN_HT40PLUS &&
5282 channel_type != NL80211_CHAN_HT40MINUS)
5283 return -EINVAL;
5284 channel_type_valid = true;
5285 }
5286
5287 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5288
5289 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5290
5291 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5292 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5293 if (chan == NULL)
5294 return -EINVAL;
5295
5296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5297 if (!msg)
5298 return -ENOMEM;
5299
5300 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5301 NL80211_CMD_FRAME);
5302
5303 if (IS_ERR(hdr)) {
5304 err = PTR_ERR(hdr);
5305 goto free_msg;
5306 }
5307 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5308 channel_type_valid, wait,
5309 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5310 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5311 no_cck, &cookie);
5312 if (err)
5313 goto free_msg;
5314
5315 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5316
5317 genlmsg_end(msg, hdr);
5318 return genlmsg_reply(msg, info);
5319
5320 nla_put_failure:
5321 err = -ENOBUFS;
5322 free_msg:
5323 nlmsg_free(msg);
5324 return err;
5325 }
5326
5327 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5328 {
5329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5330 struct net_device *dev = info->user_ptr[1];
5331 u64 cookie;
5332
5333 if (!info->attrs[NL80211_ATTR_COOKIE])
5334 return -EINVAL;
5335
5336 if (!rdev->ops->mgmt_tx_cancel_wait)
5337 return -EOPNOTSUPP;
5338
5339 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5340 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5341 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5342 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5343 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5344 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5345 return -EOPNOTSUPP;
5346
5347 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5348
5349 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5350 }
5351
5352 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5353 {
5354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5355 struct wireless_dev *wdev;
5356 struct net_device *dev = info->user_ptr[1];
5357 u8 ps_state;
5358 bool state;
5359 int err;
5360
5361 if (!info->attrs[NL80211_ATTR_PS_STATE])
5362 return -EINVAL;
5363
5364 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5365
5366 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5367 return -EINVAL;
5368
5369 wdev = dev->ieee80211_ptr;
5370
5371 if (!rdev->ops->set_power_mgmt)
5372 return -EOPNOTSUPP;
5373
5374 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5375
5376 if (state == wdev->ps)
5377 return 0;
5378
5379 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5380 wdev->ps_timeout);
5381 if (!err)
5382 wdev->ps = state;
5383 return err;
5384 }
5385
5386 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5387 {
5388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5389 enum nl80211_ps_state ps_state;
5390 struct wireless_dev *wdev;
5391 struct net_device *dev = info->user_ptr[1];
5392 struct sk_buff *msg;
5393 void *hdr;
5394 int err;
5395
5396 wdev = dev->ieee80211_ptr;
5397
5398 if (!rdev->ops->set_power_mgmt)
5399 return -EOPNOTSUPP;
5400
5401 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5402 if (!msg)
5403 return -ENOMEM;
5404
5405 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5406 NL80211_CMD_GET_POWER_SAVE);
5407 if (!hdr) {
5408 err = -ENOBUFS;
5409 goto free_msg;
5410 }
5411
5412 if (wdev->ps)
5413 ps_state = NL80211_PS_ENABLED;
5414 else
5415 ps_state = NL80211_PS_DISABLED;
5416
5417 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5418
5419 genlmsg_end(msg, hdr);
5420 return genlmsg_reply(msg, info);
5421
5422 nla_put_failure:
5423 err = -ENOBUFS;
5424 free_msg:
5425 nlmsg_free(msg);
5426 return err;
5427 }
5428
5429 static struct nla_policy
5430 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5431 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5432 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5433 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5434 };
5435
5436 static int nl80211_set_cqm_rssi(struct genl_info *info,
5437 s32 threshold, u32 hysteresis)
5438 {
5439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5440 struct wireless_dev *wdev;
5441 struct net_device *dev = info->user_ptr[1];
5442
5443 if (threshold > 0)
5444 return -EINVAL;
5445
5446 wdev = dev->ieee80211_ptr;
5447
5448 if (!rdev->ops->set_cqm_rssi_config)
5449 return -EOPNOTSUPP;
5450
5451 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5452 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5453 return -EOPNOTSUPP;
5454
5455 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5456 threshold, hysteresis);
5457 }
5458
5459 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5460 {
5461 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5462 struct nlattr *cqm;
5463 int err;
5464
5465 cqm = info->attrs[NL80211_ATTR_CQM];
5466 if (!cqm) {
5467 err = -EINVAL;
5468 goto out;
5469 }
5470
5471 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5472 nl80211_attr_cqm_policy);
5473 if (err)
5474 goto out;
5475
5476 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5477 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5478 s32 threshold;
5479 u32 hysteresis;
5480 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5481 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5482 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5483 } else
5484 err = -EINVAL;
5485
5486 out:
5487 return err;
5488 }
5489
5490 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5491 {
5492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5493 struct net_device *dev = info->user_ptr[1];
5494 struct mesh_config cfg;
5495 struct mesh_setup setup;
5496 int err;
5497
5498 /* start with default */
5499 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5500 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5501
5502 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5503 /* and parse parameters if given */
5504 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5505 if (err)
5506 return err;
5507 }
5508
5509 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5510 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5511 return -EINVAL;
5512
5513 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5514 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5515
5516 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5517 /* parse additional setup parameters if given */
5518 err = nl80211_parse_mesh_setup(info, &setup);
5519 if (err)
5520 return err;
5521 }
5522
5523 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5524 }
5525
5526 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5527 {
5528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5529 struct net_device *dev = info->user_ptr[1];
5530
5531 return cfg80211_leave_mesh(rdev, dev);
5532 }
5533
5534 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5535 {
5536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5537 struct sk_buff *msg;
5538 void *hdr;
5539
5540 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5541 return -EOPNOTSUPP;
5542
5543 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5544 if (!msg)
5545 return -ENOMEM;
5546
5547 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5548 NL80211_CMD_GET_WOWLAN);
5549 if (!hdr)
5550 goto nla_put_failure;
5551
5552 if (rdev->wowlan) {
5553 struct nlattr *nl_wowlan;
5554
5555 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5556 if (!nl_wowlan)
5557 goto nla_put_failure;
5558
5559 if (rdev->wowlan->any)
5560 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5561 if (rdev->wowlan->disconnect)
5562 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5563 if (rdev->wowlan->magic_pkt)
5564 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5565 if (rdev->wowlan->gtk_rekey_failure)
5566 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5567 if (rdev->wowlan->eap_identity_req)
5568 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5569 if (rdev->wowlan->four_way_handshake)
5570 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5571 if (rdev->wowlan->rfkill_release)
5572 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5573 if (rdev->wowlan->n_patterns) {
5574 struct nlattr *nl_pats, *nl_pat;
5575 int i, pat_len;
5576
5577 nl_pats = nla_nest_start(msg,
5578 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5579 if (!nl_pats)
5580 goto nla_put_failure;
5581
5582 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5583 nl_pat = nla_nest_start(msg, i + 1);
5584 if (!nl_pat)
5585 goto nla_put_failure;
5586 pat_len = rdev->wowlan->patterns[i].pattern_len;
5587 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5588 DIV_ROUND_UP(pat_len, 8),
5589 rdev->wowlan->patterns[i].mask);
5590 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5591 pat_len,
5592 rdev->wowlan->patterns[i].pattern);
5593 nla_nest_end(msg, nl_pat);
5594 }
5595 nla_nest_end(msg, nl_pats);
5596 }
5597
5598 nla_nest_end(msg, nl_wowlan);
5599 }
5600
5601 genlmsg_end(msg, hdr);
5602 return genlmsg_reply(msg, info);
5603
5604 nla_put_failure:
5605 nlmsg_free(msg);
5606 return -ENOBUFS;
5607 }
5608
5609 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5610 {
5611 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5612 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5613 struct cfg80211_wowlan no_triggers = {};
5614 struct cfg80211_wowlan new_triggers = {};
5615 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5616 int err, i;
5617
5618 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5619 return -EOPNOTSUPP;
5620
5621 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5622 goto no_triggers;
5623
5624 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5625 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5626 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5627 nl80211_wowlan_policy);
5628 if (err)
5629 return err;
5630
5631 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5632 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5633 return -EINVAL;
5634 new_triggers.any = true;
5635 }
5636
5637 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5638 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5639 return -EINVAL;
5640 new_triggers.disconnect = true;
5641 }
5642
5643 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5644 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5645 return -EINVAL;
5646 new_triggers.magic_pkt = true;
5647 }
5648
5649 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5650 return -EINVAL;
5651
5652 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5653 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5654 return -EINVAL;
5655 new_triggers.gtk_rekey_failure = true;
5656 }
5657
5658 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5659 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5660 return -EINVAL;
5661 new_triggers.eap_identity_req = true;
5662 }
5663
5664 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5665 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5666 return -EINVAL;
5667 new_triggers.four_way_handshake = true;
5668 }
5669
5670 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5671 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5672 return -EINVAL;
5673 new_triggers.rfkill_release = true;
5674 }
5675
5676 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5677 struct nlattr *pat;
5678 int n_patterns = 0;
5679 int rem, pat_len, mask_len;
5680 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5681
5682 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5683 rem)
5684 n_patterns++;
5685 if (n_patterns > wowlan->n_patterns)
5686 return -EINVAL;
5687
5688 new_triggers.patterns = kcalloc(n_patterns,
5689 sizeof(new_triggers.patterns[0]),
5690 GFP_KERNEL);
5691 if (!new_triggers.patterns)
5692 return -ENOMEM;
5693
5694 new_triggers.n_patterns = n_patterns;
5695 i = 0;
5696
5697 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5698 rem) {
5699 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5700 nla_data(pat), nla_len(pat), NULL);
5701 err = -EINVAL;
5702 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5703 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5704 goto error;
5705 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5706 mask_len = DIV_ROUND_UP(pat_len, 8);
5707 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5708 mask_len)
5709 goto error;
5710 if (pat_len > wowlan->pattern_max_len ||
5711 pat_len < wowlan->pattern_min_len)
5712 goto error;
5713
5714 new_triggers.patterns[i].mask =
5715 kmalloc(mask_len + pat_len, GFP_KERNEL);
5716 if (!new_triggers.patterns[i].mask) {
5717 err = -ENOMEM;
5718 goto error;
5719 }
5720 new_triggers.patterns[i].pattern =
5721 new_triggers.patterns[i].mask + mask_len;
5722 memcpy(new_triggers.patterns[i].mask,
5723 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5724 mask_len);
5725 new_triggers.patterns[i].pattern_len = pat_len;
5726 memcpy(new_triggers.patterns[i].pattern,
5727 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5728 pat_len);
5729 i++;
5730 }
5731 }
5732
5733 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5734 struct cfg80211_wowlan *ntrig;
5735 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5736 GFP_KERNEL);
5737 if (!ntrig) {
5738 err = -ENOMEM;
5739 goto error;
5740 }
5741 cfg80211_rdev_free_wowlan(rdev);
5742 rdev->wowlan = ntrig;
5743 } else {
5744 no_triggers:
5745 cfg80211_rdev_free_wowlan(rdev);
5746 rdev->wowlan = NULL;
5747 }
5748
5749 return 0;
5750 error:
5751 for (i = 0; i < new_triggers.n_patterns; i++)
5752 kfree(new_triggers.patterns[i].mask);
5753 kfree(new_triggers.patterns);
5754 return err;
5755 }
5756
5757 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5758 {
5759 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5760 struct net_device *dev = info->user_ptr[1];
5761 struct wireless_dev *wdev = dev->ieee80211_ptr;
5762 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5763 struct cfg80211_gtk_rekey_data rekey_data;
5764 int err;
5765
5766 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5767 return -EINVAL;
5768
5769 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5770 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5771 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5772 nl80211_rekey_policy);
5773 if (err)
5774 return err;
5775
5776 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5777 return -ERANGE;
5778 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5779 return -ERANGE;
5780 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5781 return -ERANGE;
5782
5783 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5784 NL80211_KEK_LEN);
5785 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5786 NL80211_KCK_LEN);
5787 memcpy(rekey_data.replay_ctr,
5788 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5789 NL80211_REPLAY_CTR_LEN);
5790
5791 wdev_lock(wdev);
5792 if (!wdev->current_bss) {
5793 err = -ENOTCONN;
5794 goto out;
5795 }
5796
5797 if (!rdev->ops->set_rekey_data) {
5798 err = -EOPNOTSUPP;
5799 goto out;
5800 }
5801
5802 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5803 out:
5804 wdev_unlock(wdev);
5805 return err;
5806 }
5807
5808 #define NL80211_FLAG_NEED_WIPHY 0x01
5809 #define NL80211_FLAG_NEED_NETDEV 0x02
5810 #define NL80211_FLAG_NEED_RTNL 0x04
5811 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5812 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5813 NL80211_FLAG_CHECK_NETDEV_UP)
5814
5815 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5816 struct genl_info *info)
5817 {
5818 struct cfg80211_registered_device *rdev;
5819 struct net_device *dev;
5820 int err;
5821 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5822
5823 if (rtnl)
5824 rtnl_lock();
5825
5826 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5827 rdev = cfg80211_get_dev_from_info(info);
5828 if (IS_ERR(rdev)) {
5829 if (rtnl)
5830 rtnl_unlock();
5831 return PTR_ERR(rdev);
5832 }
5833 info->user_ptr[0] = rdev;
5834 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5835 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5836 if (err) {
5837 if (rtnl)
5838 rtnl_unlock();
5839 return err;
5840 }
5841 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5842 !netif_running(dev)) {
5843 cfg80211_unlock_rdev(rdev);
5844 dev_put(dev);
5845 if (rtnl)
5846 rtnl_unlock();
5847 return -ENETDOWN;
5848 }
5849 info->user_ptr[0] = rdev;
5850 info->user_ptr[1] = dev;
5851 }
5852
5853 return 0;
5854 }
5855
5856 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5857 struct genl_info *info)
5858 {
5859 if (info->user_ptr[0])
5860 cfg80211_unlock_rdev(info->user_ptr[0]);
5861 if (info->user_ptr[1])
5862 dev_put(info->user_ptr[1]);
5863 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5864 rtnl_unlock();
5865 }
5866
5867 static struct genl_ops nl80211_ops[] = {
5868 {
5869 .cmd = NL80211_CMD_GET_WIPHY,
5870 .doit = nl80211_get_wiphy,
5871 .dumpit = nl80211_dump_wiphy,
5872 .policy = nl80211_policy,
5873 /* can be retrieved by unprivileged users */
5874 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5875 },
5876 {
5877 .cmd = NL80211_CMD_SET_WIPHY,
5878 .doit = nl80211_set_wiphy,
5879 .policy = nl80211_policy,
5880 .flags = GENL_ADMIN_PERM,
5881 .internal_flags = NL80211_FLAG_NEED_RTNL,
5882 },
5883 {
5884 .cmd = NL80211_CMD_GET_INTERFACE,
5885 .doit = nl80211_get_interface,
5886 .dumpit = nl80211_dump_interface,
5887 .policy = nl80211_policy,
5888 /* can be retrieved by unprivileged users */
5889 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5890 },
5891 {
5892 .cmd = NL80211_CMD_SET_INTERFACE,
5893 .doit = nl80211_set_interface,
5894 .policy = nl80211_policy,
5895 .flags = GENL_ADMIN_PERM,
5896 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5897 NL80211_FLAG_NEED_RTNL,
5898 },
5899 {
5900 .cmd = NL80211_CMD_NEW_INTERFACE,
5901 .doit = nl80211_new_interface,
5902 .policy = nl80211_policy,
5903 .flags = GENL_ADMIN_PERM,
5904 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5905 NL80211_FLAG_NEED_RTNL,
5906 },
5907 {
5908 .cmd = NL80211_CMD_DEL_INTERFACE,
5909 .doit = nl80211_del_interface,
5910 .policy = nl80211_policy,
5911 .flags = GENL_ADMIN_PERM,
5912 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5913 NL80211_FLAG_NEED_RTNL,
5914 },
5915 {
5916 .cmd = NL80211_CMD_GET_KEY,
5917 .doit = nl80211_get_key,
5918 .policy = nl80211_policy,
5919 .flags = GENL_ADMIN_PERM,
5920 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5921 NL80211_FLAG_NEED_RTNL,
5922 },
5923 {
5924 .cmd = NL80211_CMD_SET_KEY,
5925 .doit = nl80211_set_key,
5926 .policy = nl80211_policy,
5927 .flags = GENL_ADMIN_PERM,
5928 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5929 NL80211_FLAG_NEED_RTNL,
5930 },
5931 {
5932 .cmd = NL80211_CMD_NEW_KEY,
5933 .doit = nl80211_new_key,
5934 .policy = nl80211_policy,
5935 .flags = GENL_ADMIN_PERM,
5936 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5937 NL80211_FLAG_NEED_RTNL,
5938 },
5939 {
5940 .cmd = NL80211_CMD_DEL_KEY,
5941 .doit = nl80211_del_key,
5942 .policy = nl80211_policy,
5943 .flags = GENL_ADMIN_PERM,
5944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5945 NL80211_FLAG_NEED_RTNL,
5946 },
5947 {
5948 .cmd = NL80211_CMD_SET_BEACON,
5949 .policy = nl80211_policy,
5950 .flags = GENL_ADMIN_PERM,
5951 .doit = nl80211_addset_beacon,
5952 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5953 NL80211_FLAG_NEED_RTNL,
5954 },
5955 {
5956 .cmd = NL80211_CMD_NEW_BEACON,
5957 .policy = nl80211_policy,
5958 .flags = GENL_ADMIN_PERM,
5959 .doit = nl80211_addset_beacon,
5960 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5961 NL80211_FLAG_NEED_RTNL,
5962 },
5963 {
5964 .cmd = NL80211_CMD_DEL_BEACON,
5965 .policy = nl80211_policy,
5966 .flags = GENL_ADMIN_PERM,
5967 .doit = nl80211_del_beacon,
5968 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5969 NL80211_FLAG_NEED_RTNL,
5970 },
5971 {
5972 .cmd = NL80211_CMD_GET_STATION,
5973 .doit = nl80211_get_station,
5974 .dumpit = nl80211_dump_station,
5975 .policy = nl80211_policy,
5976 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5977 NL80211_FLAG_NEED_RTNL,
5978 },
5979 {
5980 .cmd = NL80211_CMD_SET_STATION,
5981 .doit = nl80211_set_station,
5982 .policy = nl80211_policy,
5983 .flags = GENL_ADMIN_PERM,
5984 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5985 NL80211_FLAG_NEED_RTNL,
5986 },
5987 {
5988 .cmd = NL80211_CMD_NEW_STATION,
5989 .doit = nl80211_new_station,
5990 .policy = nl80211_policy,
5991 .flags = GENL_ADMIN_PERM,
5992 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5993 NL80211_FLAG_NEED_RTNL,
5994 },
5995 {
5996 .cmd = NL80211_CMD_DEL_STATION,
5997 .doit = nl80211_del_station,
5998 .policy = nl80211_policy,
5999 .flags = GENL_ADMIN_PERM,
6000 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6001 NL80211_FLAG_NEED_RTNL,
6002 },
6003 {
6004 .cmd = NL80211_CMD_GET_MPATH,
6005 .doit = nl80211_get_mpath,
6006 .dumpit = nl80211_dump_mpath,
6007 .policy = nl80211_policy,
6008 .flags = GENL_ADMIN_PERM,
6009 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6010 NL80211_FLAG_NEED_RTNL,
6011 },
6012 {
6013 .cmd = NL80211_CMD_SET_MPATH,
6014 .doit = nl80211_set_mpath,
6015 .policy = nl80211_policy,
6016 .flags = GENL_ADMIN_PERM,
6017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6018 NL80211_FLAG_NEED_RTNL,
6019 },
6020 {
6021 .cmd = NL80211_CMD_NEW_MPATH,
6022 .doit = nl80211_new_mpath,
6023 .policy = nl80211_policy,
6024 .flags = GENL_ADMIN_PERM,
6025 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6026 NL80211_FLAG_NEED_RTNL,
6027 },
6028 {
6029 .cmd = NL80211_CMD_DEL_MPATH,
6030 .doit = nl80211_del_mpath,
6031 .policy = nl80211_policy,
6032 .flags = GENL_ADMIN_PERM,
6033 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6034 NL80211_FLAG_NEED_RTNL,
6035 },
6036 {
6037 .cmd = NL80211_CMD_SET_BSS,
6038 .doit = nl80211_set_bss,
6039 .policy = nl80211_policy,
6040 .flags = GENL_ADMIN_PERM,
6041 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6042 NL80211_FLAG_NEED_RTNL,
6043 },
6044 {
6045 .cmd = NL80211_CMD_GET_REG,
6046 .doit = nl80211_get_reg,
6047 .policy = nl80211_policy,
6048 /* can be retrieved by unprivileged users */
6049 },
6050 {
6051 .cmd = NL80211_CMD_SET_REG,
6052 .doit = nl80211_set_reg,
6053 .policy = nl80211_policy,
6054 .flags = GENL_ADMIN_PERM,
6055 },
6056 {
6057 .cmd = NL80211_CMD_REQ_SET_REG,
6058 .doit = nl80211_req_set_reg,
6059 .policy = nl80211_policy,
6060 .flags = GENL_ADMIN_PERM,
6061 },
6062 {
6063 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6064 .doit = nl80211_get_mesh_config,
6065 .policy = nl80211_policy,
6066 /* can be retrieved by unprivileged users */
6067 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6068 NL80211_FLAG_NEED_RTNL,
6069 },
6070 {
6071 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6072 .doit = nl80211_update_mesh_config,
6073 .policy = nl80211_policy,
6074 .flags = GENL_ADMIN_PERM,
6075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6076 NL80211_FLAG_NEED_RTNL,
6077 },
6078 {
6079 .cmd = NL80211_CMD_TRIGGER_SCAN,
6080 .doit = nl80211_trigger_scan,
6081 .policy = nl80211_policy,
6082 .flags = GENL_ADMIN_PERM,
6083 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6084 NL80211_FLAG_NEED_RTNL,
6085 },
6086 {
6087 .cmd = NL80211_CMD_GET_SCAN,
6088 .policy = nl80211_policy,
6089 .dumpit = nl80211_dump_scan,
6090 },
6091 {
6092 .cmd = NL80211_CMD_START_SCHED_SCAN,
6093 .doit = nl80211_start_sched_scan,
6094 .policy = nl80211_policy,
6095 .flags = GENL_ADMIN_PERM,
6096 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6097 NL80211_FLAG_NEED_RTNL,
6098 },
6099 {
6100 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6101 .doit = nl80211_stop_sched_scan,
6102 .policy = nl80211_policy,
6103 .flags = GENL_ADMIN_PERM,
6104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6105 NL80211_FLAG_NEED_RTNL,
6106 },
6107 {
6108 .cmd = NL80211_CMD_AUTHENTICATE,
6109 .doit = nl80211_authenticate,
6110 .policy = nl80211_policy,
6111 .flags = GENL_ADMIN_PERM,
6112 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6113 NL80211_FLAG_NEED_RTNL,
6114 },
6115 {
6116 .cmd = NL80211_CMD_ASSOCIATE,
6117 .doit = nl80211_associate,
6118 .policy = nl80211_policy,
6119 .flags = GENL_ADMIN_PERM,
6120 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6121 NL80211_FLAG_NEED_RTNL,
6122 },
6123 {
6124 .cmd = NL80211_CMD_DEAUTHENTICATE,
6125 .doit = nl80211_deauthenticate,
6126 .policy = nl80211_policy,
6127 .flags = GENL_ADMIN_PERM,
6128 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6129 NL80211_FLAG_NEED_RTNL,
6130 },
6131 {
6132 .cmd = NL80211_CMD_DISASSOCIATE,
6133 .doit = nl80211_disassociate,
6134 .policy = nl80211_policy,
6135 .flags = GENL_ADMIN_PERM,
6136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6137 NL80211_FLAG_NEED_RTNL,
6138 },
6139 {
6140 .cmd = NL80211_CMD_JOIN_IBSS,
6141 .doit = nl80211_join_ibss,
6142 .policy = nl80211_policy,
6143 .flags = GENL_ADMIN_PERM,
6144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6145 NL80211_FLAG_NEED_RTNL,
6146 },
6147 {
6148 .cmd = NL80211_CMD_LEAVE_IBSS,
6149 .doit = nl80211_leave_ibss,
6150 .policy = nl80211_policy,
6151 .flags = GENL_ADMIN_PERM,
6152 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6153 NL80211_FLAG_NEED_RTNL,
6154 },
6155 #ifdef CONFIG_NL80211_TESTMODE
6156 {
6157 .cmd = NL80211_CMD_TESTMODE,
6158 .doit = nl80211_testmode_do,
6159 .dumpit = nl80211_testmode_dump,
6160 .policy = nl80211_policy,
6161 .flags = GENL_ADMIN_PERM,
6162 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6163 NL80211_FLAG_NEED_RTNL,
6164 },
6165 #endif
6166 {
6167 .cmd = NL80211_CMD_CONNECT,
6168 .doit = nl80211_connect,
6169 .policy = nl80211_policy,
6170 .flags = GENL_ADMIN_PERM,
6171 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6172 NL80211_FLAG_NEED_RTNL,
6173 },
6174 {
6175 .cmd = NL80211_CMD_DISCONNECT,
6176 .doit = nl80211_disconnect,
6177 .policy = nl80211_policy,
6178 .flags = GENL_ADMIN_PERM,
6179 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6180 NL80211_FLAG_NEED_RTNL,
6181 },
6182 {
6183 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6184 .doit = nl80211_wiphy_netns,
6185 .policy = nl80211_policy,
6186 .flags = GENL_ADMIN_PERM,
6187 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6188 NL80211_FLAG_NEED_RTNL,
6189 },
6190 {
6191 .cmd = NL80211_CMD_GET_SURVEY,
6192 .policy = nl80211_policy,
6193 .dumpit = nl80211_dump_survey,
6194 },
6195 {
6196 .cmd = NL80211_CMD_SET_PMKSA,
6197 .doit = nl80211_setdel_pmksa,
6198 .policy = nl80211_policy,
6199 .flags = GENL_ADMIN_PERM,
6200 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6201 NL80211_FLAG_NEED_RTNL,
6202 },
6203 {
6204 .cmd = NL80211_CMD_DEL_PMKSA,
6205 .doit = nl80211_setdel_pmksa,
6206 .policy = nl80211_policy,
6207 .flags = GENL_ADMIN_PERM,
6208 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6209 NL80211_FLAG_NEED_RTNL,
6210 },
6211 {
6212 .cmd = NL80211_CMD_FLUSH_PMKSA,
6213 .doit = nl80211_flush_pmksa,
6214 .policy = nl80211_policy,
6215 .flags = GENL_ADMIN_PERM,
6216 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6217 NL80211_FLAG_NEED_RTNL,
6218 },
6219 {
6220 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6221 .doit = nl80211_remain_on_channel,
6222 .policy = nl80211_policy,
6223 .flags = GENL_ADMIN_PERM,
6224 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6225 NL80211_FLAG_NEED_RTNL,
6226 },
6227 {
6228 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6229 .doit = nl80211_cancel_remain_on_channel,
6230 .policy = nl80211_policy,
6231 .flags = GENL_ADMIN_PERM,
6232 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6233 NL80211_FLAG_NEED_RTNL,
6234 },
6235 {
6236 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6237 .doit = nl80211_set_tx_bitrate_mask,
6238 .policy = nl80211_policy,
6239 .flags = GENL_ADMIN_PERM,
6240 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6241 NL80211_FLAG_NEED_RTNL,
6242 },
6243 {
6244 .cmd = NL80211_CMD_REGISTER_FRAME,
6245 .doit = nl80211_register_mgmt,
6246 .policy = nl80211_policy,
6247 .flags = GENL_ADMIN_PERM,
6248 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6249 NL80211_FLAG_NEED_RTNL,
6250 },
6251 {
6252 .cmd = NL80211_CMD_FRAME,
6253 .doit = nl80211_tx_mgmt,
6254 .policy = nl80211_policy,
6255 .flags = GENL_ADMIN_PERM,
6256 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6257 NL80211_FLAG_NEED_RTNL,
6258 },
6259 {
6260 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6261 .doit = nl80211_tx_mgmt_cancel_wait,
6262 .policy = nl80211_policy,
6263 .flags = GENL_ADMIN_PERM,
6264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6265 NL80211_FLAG_NEED_RTNL,
6266 },
6267 {
6268 .cmd = NL80211_CMD_SET_POWER_SAVE,
6269 .doit = nl80211_set_power_save,
6270 .policy = nl80211_policy,
6271 .flags = GENL_ADMIN_PERM,
6272 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6273 NL80211_FLAG_NEED_RTNL,
6274 },
6275 {
6276 .cmd = NL80211_CMD_GET_POWER_SAVE,
6277 .doit = nl80211_get_power_save,
6278 .policy = nl80211_policy,
6279 /* can be retrieved by unprivileged users */
6280 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6281 NL80211_FLAG_NEED_RTNL,
6282 },
6283 {
6284 .cmd = NL80211_CMD_SET_CQM,
6285 .doit = nl80211_set_cqm,
6286 .policy = nl80211_policy,
6287 .flags = GENL_ADMIN_PERM,
6288 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6289 NL80211_FLAG_NEED_RTNL,
6290 },
6291 {
6292 .cmd = NL80211_CMD_SET_CHANNEL,
6293 .doit = nl80211_set_channel,
6294 .policy = nl80211_policy,
6295 .flags = GENL_ADMIN_PERM,
6296 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6297 NL80211_FLAG_NEED_RTNL,
6298 },
6299 {
6300 .cmd = NL80211_CMD_SET_WDS_PEER,
6301 .doit = nl80211_set_wds_peer,
6302 .policy = nl80211_policy,
6303 .flags = GENL_ADMIN_PERM,
6304 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6305 NL80211_FLAG_NEED_RTNL,
6306 },
6307 {
6308 .cmd = NL80211_CMD_JOIN_MESH,
6309 .doit = nl80211_join_mesh,
6310 .policy = nl80211_policy,
6311 .flags = GENL_ADMIN_PERM,
6312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6313 NL80211_FLAG_NEED_RTNL,
6314 },
6315 {
6316 .cmd = NL80211_CMD_LEAVE_MESH,
6317 .doit = nl80211_leave_mesh,
6318 .policy = nl80211_policy,
6319 .flags = GENL_ADMIN_PERM,
6320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6321 NL80211_FLAG_NEED_RTNL,
6322 },
6323 {
6324 .cmd = NL80211_CMD_GET_WOWLAN,
6325 .doit = nl80211_get_wowlan,
6326 .policy = nl80211_policy,
6327 /* can be retrieved by unprivileged users */
6328 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6329 NL80211_FLAG_NEED_RTNL,
6330 },
6331 {
6332 .cmd = NL80211_CMD_SET_WOWLAN,
6333 .doit = nl80211_set_wowlan,
6334 .policy = nl80211_policy,
6335 .flags = GENL_ADMIN_PERM,
6336 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6337 NL80211_FLAG_NEED_RTNL,
6338 },
6339 {
6340 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6341 .doit = nl80211_set_rekey_data,
6342 .policy = nl80211_policy,
6343 .flags = GENL_ADMIN_PERM,
6344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6345 NL80211_FLAG_NEED_RTNL,
6346 },
6347 {
6348 .cmd = NL80211_CMD_TDLS_MGMT,
6349 .doit = nl80211_tdls_mgmt,
6350 .policy = nl80211_policy,
6351 .flags = GENL_ADMIN_PERM,
6352 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6353 NL80211_FLAG_NEED_RTNL,
6354 },
6355 {
6356 .cmd = NL80211_CMD_TDLS_OPER,
6357 .doit = nl80211_tdls_oper,
6358 .policy = nl80211_policy,
6359 .flags = GENL_ADMIN_PERM,
6360 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6361 NL80211_FLAG_NEED_RTNL,
6362 },
6363 };
6364
6365 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6366 .name = "mlme",
6367 };
6368
6369 /* multicast groups */
6370 static struct genl_multicast_group nl80211_config_mcgrp = {
6371 .name = "config",
6372 };
6373 static struct genl_multicast_group nl80211_scan_mcgrp = {
6374 .name = "scan",
6375 };
6376 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6377 .name = "regulatory",
6378 };
6379
6380 /* notification functions */
6381
6382 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6383 {
6384 struct sk_buff *msg;
6385
6386 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6387 if (!msg)
6388 return;
6389
6390 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6391 nlmsg_free(msg);
6392 return;
6393 }
6394
6395 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6396 nl80211_config_mcgrp.id, GFP_KERNEL);
6397 }
6398
6399 static int nl80211_add_scan_req(struct sk_buff *msg,
6400 struct cfg80211_registered_device *rdev)
6401 {
6402 struct cfg80211_scan_request *req = rdev->scan_req;
6403 struct nlattr *nest;
6404 int i;
6405
6406 ASSERT_RDEV_LOCK(rdev);
6407
6408 if (WARN_ON(!req))
6409 return 0;
6410
6411 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6412 if (!nest)
6413 goto nla_put_failure;
6414 for (i = 0; i < req->n_ssids; i++)
6415 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6416 nla_nest_end(msg, nest);
6417
6418 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6419 if (!nest)
6420 goto nla_put_failure;
6421 for (i = 0; i < req->n_channels; i++)
6422 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6423 nla_nest_end(msg, nest);
6424
6425 if (req->ie)
6426 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6427
6428 return 0;
6429 nla_put_failure:
6430 return -ENOBUFS;
6431 }
6432
6433 static int nl80211_send_scan_msg(struct sk_buff *msg,
6434 struct cfg80211_registered_device *rdev,
6435 struct net_device *netdev,
6436 u32 pid, u32 seq, int flags,
6437 u32 cmd)
6438 {
6439 void *hdr;
6440
6441 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6442 if (!hdr)
6443 return -1;
6444
6445 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6446 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6447
6448 /* ignore errors and send incomplete event anyway */
6449 nl80211_add_scan_req(msg, rdev);
6450
6451 return genlmsg_end(msg, hdr);
6452
6453 nla_put_failure:
6454 genlmsg_cancel(msg, hdr);
6455 return -EMSGSIZE;
6456 }
6457
6458 static int
6459 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6460 struct cfg80211_registered_device *rdev,
6461 struct net_device *netdev,
6462 u32 pid, u32 seq, int flags, u32 cmd)
6463 {
6464 void *hdr;
6465
6466 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6467 if (!hdr)
6468 return -1;
6469
6470 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6471 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6472
6473 return genlmsg_end(msg, hdr);
6474
6475 nla_put_failure:
6476 genlmsg_cancel(msg, hdr);
6477 return -EMSGSIZE;
6478 }
6479
6480 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6481 struct net_device *netdev)
6482 {
6483 struct sk_buff *msg;
6484
6485 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6486 if (!msg)
6487 return;
6488
6489 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6490 NL80211_CMD_TRIGGER_SCAN) < 0) {
6491 nlmsg_free(msg);
6492 return;
6493 }
6494
6495 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6496 nl80211_scan_mcgrp.id, GFP_KERNEL);
6497 }
6498
6499 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6500 struct net_device *netdev)
6501 {
6502 struct sk_buff *msg;
6503
6504 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6505 if (!msg)
6506 return;
6507
6508 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6509 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6510 nlmsg_free(msg);
6511 return;
6512 }
6513
6514 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6515 nl80211_scan_mcgrp.id, GFP_KERNEL);
6516 }
6517
6518 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6519 struct net_device *netdev)
6520 {
6521 struct sk_buff *msg;
6522
6523 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6524 if (!msg)
6525 return;
6526
6527 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6528 NL80211_CMD_SCAN_ABORTED) < 0) {
6529 nlmsg_free(msg);
6530 return;
6531 }
6532
6533 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6534 nl80211_scan_mcgrp.id, GFP_KERNEL);
6535 }
6536
6537 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6538 struct net_device *netdev)
6539 {
6540 struct sk_buff *msg;
6541
6542 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6543 if (!msg)
6544 return;
6545
6546 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6547 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6548 nlmsg_free(msg);
6549 return;
6550 }
6551
6552 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6553 nl80211_scan_mcgrp.id, GFP_KERNEL);
6554 }
6555
6556 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6557 struct net_device *netdev, u32 cmd)
6558 {
6559 struct sk_buff *msg;
6560
6561 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6562 if (!msg)
6563 return;
6564
6565 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6566 nlmsg_free(msg);
6567 return;
6568 }
6569
6570 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6571 nl80211_scan_mcgrp.id, GFP_KERNEL);
6572 }
6573
6574 /*
6575 * This can happen on global regulatory changes or device specific settings
6576 * based on custom world regulatory domains.
6577 */
6578 void nl80211_send_reg_change_event(struct regulatory_request *request)
6579 {
6580 struct sk_buff *msg;
6581 void *hdr;
6582
6583 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6584 if (!msg)
6585 return;
6586
6587 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6588 if (!hdr) {
6589 nlmsg_free(msg);
6590 return;
6591 }
6592
6593 /* Userspace can always count this one always being set */
6594 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6595
6596 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6597 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6598 NL80211_REGDOM_TYPE_WORLD);
6599 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6600 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6601 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6602 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6603 request->intersect)
6604 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6605 NL80211_REGDOM_TYPE_INTERSECTION);
6606 else {
6607 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6608 NL80211_REGDOM_TYPE_COUNTRY);
6609 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6610 }
6611
6612 if (wiphy_idx_valid(request->wiphy_idx))
6613 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6614
6615 if (genlmsg_end(msg, hdr) < 0) {
6616 nlmsg_free(msg);
6617 return;
6618 }
6619
6620 rcu_read_lock();
6621 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6622 GFP_ATOMIC);
6623 rcu_read_unlock();
6624
6625 return;
6626
6627 nla_put_failure:
6628 genlmsg_cancel(msg, hdr);
6629 nlmsg_free(msg);
6630 }
6631
6632 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6633 struct net_device *netdev,
6634 const u8 *buf, size_t len,
6635 enum nl80211_commands cmd, gfp_t gfp)
6636 {
6637 struct sk_buff *msg;
6638 void *hdr;
6639
6640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6641 if (!msg)
6642 return;
6643
6644 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6645 if (!hdr) {
6646 nlmsg_free(msg);
6647 return;
6648 }
6649
6650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6651 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6652 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6653
6654 if (genlmsg_end(msg, hdr) < 0) {
6655 nlmsg_free(msg);
6656 return;
6657 }
6658
6659 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6660 nl80211_mlme_mcgrp.id, gfp);
6661 return;
6662
6663 nla_put_failure:
6664 genlmsg_cancel(msg, hdr);
6665 nlmsg_free(msg);
6666 }
6667
6668 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6669 struct net_device *netdev, const u8 *buf,
6670 size_t len, gfp_t gfp)
6671 {
6672 nl80211_send_mlme_event(rdev, netdev, buf, len,
6673 NL80211_CMD_AUTHENTICATE, gfp);
6674 }
6675
6676 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6677 struct net_device *netdev, const u8 *buf,
6678 size_t len, gfp_t gfp)
6679 {
6680 nl80211_send_mlme_event(rdev, netdev, buf, len,
6681 NL80211_CMD_ASSOCIATE, gfp);
6682 }
6683
6684 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6685 struct net_device *netdev, const u8 *buf,
6686 size_t len, gfp_t gfp)
6687 {
6688 nl80211_send_mlme_event(rdev, netdev, buf, len,
6689 NL80211_CMD_DEAUTHENTICATE, gfp);
6690 }
6691
6692 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6693 struct net_device *netdev, const u8 *buf,
6694 size_t len, gfp_t gfp)
6695 {
6696 nl80211_send_mlme_event(rdev, netdev, buf, len,
6697 NL80211_CMD_DISASSOCIATE, gfp);
6698 }
6699
6700 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6701 struct net_device *netdev, const u8 *buf,
6702 size_t len, gfp_t gfp)
6703 {
6704 nl80211_send_mlme_event(rdev, netdev, buf, len,
6705 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6706 }
6707
6708 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6709 struct net_device *netdev, const u8 *buf,
6710 size_t len, gfp_t gfp)
6711 {
6712 nl80211_send_mlme_event(rdev, netdev, buf, len,
6713 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6714 }
6715
6716 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6717 struct net_device *netdev, int cmd,
6718 const u8 *addr, gfp_t gfp)
6719 {
6720 struct sk_buff *msg;
6721 void *hdr;
6722
6723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6724 if (!msg)
6725 return;
6726
6727 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6728 if (!hdr) {
6729 nlmsg_free(msg);
6730 return;
6731 }
6732
6733 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6734 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6735 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6736 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6737
6738 if (genlmsg_end(msg, hdr) < 0) {
6739 nlmsg_free(msg);
6740 return;
6741 }
6742
6743 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6744 nl80211_mlme_mcgrp.id, gfp);
6745 return;
6746
6747 nla_put_failure:
6748 genlmsg_cancel(msg, hdr);
6749 nlmsg_free(msg);
6750 }
6751
6752 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6753 struct net_device *netdev, const u8 *addr,
6754 gfp_t gfp)
6755 {
6756 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6757 addr, gfp);
6758 }
6759
6760 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6761 struct net_device *netdev, const u8 *addr,
6762 gfp_t gfp)
6763 {
6764 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6765 addr, gfp);
6766 }
6767
6768 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6769 struct net_device *netdev, const u8 *bssid,
6770 const u8 *req_ie, size_t req_ie_len,
6771 const u8 *resp_ie, size_t resp_ie_len,
6772 u16 status, gfp_t gfp)
6773 {
6774 struct sk_buff *msg;
6775 void *hdr;
6776
6777 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6778 if (!msg)
6779 return;
6780
6781 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6782 if (!hdr) {
6783 nlmsg_free(msg);
6784 return;
6785 }
6786
6787 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6789 if (bssid)
6790 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6791 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6792 if (req_ie)
6793 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6794 if (resp_ie)
6795 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6796
6797 if (genlmsg_end(msg, hdr) < 0) {
6798 nlmsg_free(msg);
6799 return;
6800 }
6801
6802 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6803 nl80211_mlme_mcgrp.id, gfp);
6804 return;
6805
6806 nla_put_failure:
6807 genlmsg_cancel(msg, hdr);
6808 nlmsg_free(msg);
6809
6810 }
6811
6812 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6813 struct net_device *netdev, const u8 *bssid,
6814 const u8 *req_ie, size_t req_ie_len,
6815 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6816 {
6817 struct sk_buff *msg;
6818 void *hdr;
6819
6820 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6821 if (!msg)
6822 return;
6823
6824 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6825 if (!hdr) {
6826 nlmsg_free(msg);
6827 return;
6828 }
6829
6830 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6832 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6833 if (req_ie)
6834 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6835 if (resp_ie)
6836 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6837
6838 if (genlmsg_end(msg, hdr) < 0) {
6839 nlmsg_free(msg);
6840 return;
6841 }
6842
6843 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6844 nl80211_mlme_mcgrp.id, gfp);
6845 return;
6846
6847 nla_put_failure:
6848 genlmsg_cancel(msg, hdr);
6849 nlmsg_free(msg);
6850
6851 }
6852
6853 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6854 struct net_device *netdev, u16 reason,
6855 const u8 *ie, size_t ie_len, bool from_ap)
6856 {
6857 struct sk_buff *msg;
6858 void *hdr;
6859
6860 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6861 if (!msg)
6862 return;
6863
6864 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6865 if (!hdr) {
6866 nlmsg_free(msg);
6867 return;
6868 }
6869
6870 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6871 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6872 if (from_ap && reason)
6873 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6874 if (from_ap)
6875 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6876 if (ie)
6877 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6878
6879 if (genlmsg_end(msg, hdr) < 0) {
6880 nlmsg_free(msg);
6881 return;
6882 }
6883
6884 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6885 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6886 return;
6887
6888 nla_put_failure:
6889 genlmsg_cancel(msg, hdr);
6890 nlmsg_free(msg);
6891
6892 }
6893
6894 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6895 struct net_device *netdev, const u8 *bssid,
6896 gfp_t gfp)
6897 {
6898 struct sk_buff *msg;
6899 void *hdr;
6900
6901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6902 if (!msg)
6903 return;
6904
6905 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6906 if (!hdr) {
6907 nlmsg_free(msg);
6908 return;
6909 }
6910
6911 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6912 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6913 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6914
6915 if (genlmsg_end(msg, hdr) < 0) {
6916 nlmsg_free(msg);
6917 return;
6918 }
6919
6920 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6921 nl80211_mlme_mcgrp.id, gfp);
6922 return;
6923
6924 nla_put_failure:
6925 genlmsg_cancel(msg, hdr);
6926 nlmsg_free(msg);
6927 }
6928
6929 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6930 struct net_device *netdev,
6931 const u8 *macaddr, const u8* ie, u8 ie_len,
6932 gfp_t gfp)
6933 {
6934 struct sk_buff *msg;
6935 void *hdr;
6936
6937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6938 if (!msg)
6939 return;
6940
6941 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6942 if (!hdr) {
6943 nlmsg_free(msg);
6944 return;
6945 }
6946
6947 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6948 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6949 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6950 if (ie_len && ie)
6951 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6952
6953 if (genlmsg_end(msg, hdr) < 0) {
6954 nlmsg_free(msg);
6955 return;
6956 }
6957
6958 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6959 nl80211_mlme_mcgrp.id, gfp);
6960 return;
6961
6962 nla_put_failure:
6963 genlmsg_cancel(msg, hdr);
6964 nlmsg_free(msg);
6965 }
6966
6967 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6968 struct net_device *netdev, const u8 *addr,
6969 enum nl80211_key_type key_type, int key_id,
6970 const u8 *tsc, gfp_t gfp)
6971 {
6972 struct sk_buff *msg;
6973 void *hdr;
6974
6975 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6976 if (!msg)
6977 return;
6978
6979 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6980 if (!hdr) {
6981 nlmsg_free(msg);
6982 return;
6983 }
6984
6985 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6986 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6987 if (addr)
6988 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6989 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6990 if (key_id != -1)
6991 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6992 if (tsc)
6993 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6994
6995 if (genlmsg_end(msg, hdr) < 0) {
6996 nlmsg_free(msg);
6997 return;
6998 }
6999
7000 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7001 nl80211_mlme_mcgrp.id, gfp);
7002 return;
7003
7004 nla_put_failure:
7005 genlmsg_cancel(msg, hdr);
7006 nlmsg_free(msg);
7007 }
7008
7009 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7010 struct ieee80211_channel *channel_before,
7011 struct ieee80211_channel *channel_after)
7012 {
7013 struct sk_buff *msg;
7014 void *hdr;
7015 struct nlattr *nl_freq;
7016
7017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7018 if (!msg)
7019 return;
7020
7021 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7022 if (!hdr) {
7023 nlmsg_free(msg);
7024 return;
7025 }
7026
7027 /*
7028 * Since we are applying the beacon hint to a wiphy we know its
7029 * wiphy_idx is valid
7030 */
7031 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7032
7033 /* Before */
7034 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7035 if (!nl_freq)
7036 goto nla_put_failure;
7037 if (nl80211_msg_put_channel(msg, channel_before))
7038 goto nla_put_failure;
7039 nla_nest_end(msg, nl_freq);
7040
7041 /* After */
7042 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7043 if (!nl_freq)
7044 goto nla_put_failure;
7045 if (nl80211_msg_put_channel(msg, channel_after))
7046 goto nla_put_failure;
7047 nla_nest_end(msg, nl_freq);
7048
7049 if (genlmsg_end(msg, hdr) < 0) {
7050 nlmsg_free(msg);
7051 return;
7052 }
7053
7054 rcu_read_lock();
7055 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7056 GFP_ATOMIC);
7057 rcu_read_unlock();
7058
7059 return;
7060
7061 nla_put_failure:
7062 genlmsg_cancel(msg, hdr);
7063 nlmsg_free(msg);
7064 }
7065
7066 static void nl80211_send_remain_on_chan_event(
7067 int cmd, struct cfg80211_registered_device *rdev,
7068 struct net_device *netdev, u64 cookie,
7069 struct ieee80211_channel *chan,
7070 enum nl80211_channel_type channel_type,
7071 unsigned int duration, gfp_t gfp)
7072 {
7073 struct sk_buff *msg;
7074 void *hdr;
7075
7076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7077 if (!msg)
7078 return;
7079
7080 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7081 if (!hdr) {
7082 nlmsg_free(msg);
7083 return;
7084 }
7085
7086 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7087 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7088 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7089 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7090 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7091
7092 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7093 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7094
7095 if (genlmsg_end(msg, hdr) < 0) {
7096 nlmsg_free(msg);
7097 return;
7098 }
7099
7100 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7101 nl80211_mlme_mcgrp.id, gfp);
7102 return;
7103
7104 nla_put_failure:
7105 genlmsg_cancel(msg, hdr);
7106 nlmsg_free(msg);
7107 }
7108
7109 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7110 struct net_device *netdev, u64 cookie,
7111 struct ieee80211_channel *chan,
7112 enum nl80211_channel_type channel_type,
7113 unsigned int duration, gfp_t gfp)
7114 {
7115 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7116 rdev, netdev, cookie, chan,
7117 channel_type, duration, gfp);
7118 }
7119
7120 void nl80211_send_remain_on_channel_cancel(
7121 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7122 u64 cookie, struct ieee80211_channel *chan,
7123 enum nl80211_channel_type channel_type, gfp_t gfp)
7124 {
7125 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7126 rdev, netdev, cookie, chan,
7127 channel_type, 0, gfp);
7128 }
7129
7130 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7131 struct net_device *dev, const u8 *mac_addr,
7132 struct station_info *sinfo, gfp_t gfp)
7133 {
7134 struct sk_buff *msg;
7135
7136 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7137 if (!msg)
7138 return;
7139
7140 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7141 nlmsg_free(msg);
7142 return;
7143 }
7144
7145 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7146 nl80211_mlme_mcgrp.id, gfp);
7147 }
7148
7149 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7150 struct net_device *dev, const u8 *mac_addr,
7151 gfp_t gfp)
7152 {
7153 struct sk_buff *msg;
7154 void *hdr;
7155
7156 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7157 if (!msg)
7158 return;
7159
7160 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7161 if (!hdr) {
7162 nlmsg_free(msg);
7163 return;
7164 }
7165
7166 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7167 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7168
7169 if (genlmsg_end(msg, hdr) < 0) {
7170 nlmsg_free(msg);
7171 return;
7172 }
7173
7174 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7175 nl80211_mlme_mcgrp.id, gfp);
7176 return;
7177
7178 nla_put_failure:
7179 genlmsg_cancel(msg, hdr);
7180 nlmsg_free(msg);
7181 }
7182
7183 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7184 struct net_device *netdev, u32 nlpid,
7185 int freq, const u8 *buf, size_t len, gfp_t gfp)
7186 {
7187 struct sk_buff *msg;
7188 void *hdr;
7189 int err;
7190
7191 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7192 if (!msg)
7193 return -ENOMEM;
7194
7195 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7196 if (!hdr) {
7197 nlmsg_free(msg);
7198 return -ENOMEM;
7199 }
7200
7201 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7202 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7203 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7204 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7205
7206 err = genlmsg_end(msg, hdr);
7207 if (err < 0) {
7208 nlmsg_free(msg);
7209 return err;
7210 }
7211
7212 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7213 if (err < 0)
7214 return err;
7215 return 0;
7216
7217 nla_put_failure:
7218 genlmsg_cancel(msg, hdr);
7219 nlmsg_free(msg);
7220 return -ENOBUFS;
7221 }
7222
7223 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7224 struct net_device *netdev, u64 cookie,
7225 const u8 *buf, size_t len, bool ack,
7226 gfp_t gfp)
7227 {
7228 struct sk_buff *msg;
7229 void *hdr;
7230
7231 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7232 if (!msg)
7233 return;
7234
7235 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7236 if (!hdr) {
7237 nlmsg_free(msg);
7238 return;
7239 }
7240
7241 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7242 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7243 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7244 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7245 if (ack)
7246 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7247
7248 if (genlmsg_end(msg, hdr) < 0) {
7249 nlmsg_free(msg);
7250 return;
7251 }
7252
7253 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7254 return;
7255
7256 nla_put_failure:
7257 genlmsg_cancel(msg, hdr);
7258 nlmsg_free(msg);
7259 }
7260
7261 void
7262 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7263 struct net_device *netdev,
7264 enum nl80211_cqm_rssi_threshold_event rssi_event,
7265 gfp_t gfp)
7266 {
7267 struct sk_buff *msg;
7268 struct nlattr *pinfoattr;
7269 void *hdr;
7270
7271 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7272 if (!msg)
7273 return;
7274
7275 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7276 if (!hdr) {
7277 nlmsg_free(msg);
7278 return;
7279 }
7280
7281 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7282 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7283
7284 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7285 if (!pinfoattr)
7286 goto nla_put_failure;
7287
7288 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7289 rssi_event);
7290
7291 nla_nest_end(msg, pinfoattr);
7292
7293 if (genlmsg_end(msg, hdr) < 0) {
7294 nlmsg_free(msg);
7295 return;
7296 }
7297
7298 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7299 nl80211_mlme_mcgrp.id, gfp);
7300 return;
7301
7302 nla_put_failure:
7303 genlmsg_cancel(msg, hdr);
7304 nlmsg_free(msg);
7305 }
7306
7307 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7308 struct net_device *netdev, const u8 *bssid,
7309 const u8 *replay_ctr, gfp_t gfp)
7310 {
7311 struct sk_buff *msg;
7312 struct nlattr *rekey_attr;
7313 void *hdr;
7314
7315 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7316 if (!msg)
7317 return;
7318
7319 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7320 if (!hdr) {
7321 nlmsg_free(msg);
7322 return;
7323 }
7324
7325 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7326 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7327 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7328
7329 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7330 if (!rekey_attr)
7331 goto nla_put_failure;
7332
7333 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7334 NL80211_REPLAY_CTR_LEN, replay_ctr);
7335
7336 nla_nest_end(msg, rekey_attr);
7337
7338 if (genlmsg_end(msg, hdr) < 0) {
7339 nlmsg_free(msg);
7340 return;
7341 }
7342
7343 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7344 nl80211_mlme_mcgrp.id, gfp);
7345 return;
7346
7347 nla_put_failure:
7348 genlmsg_cancel(msg, hdr);
7349 nlmsg_free(msg);
7350 }
7351
7352 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7353 struct net_device *netdev, int index,
7354 const u8 *bssid, bool preauth, gfp_t gfp)
7355 {
7356 struct sk_buff *msg;
7357 struct nlattr *attr;
7358 void *hdr;
7359
7360 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7361 if (!msg)
7362 return;
7363
7364 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7365 if (!hdr) {
7366 nlmsg_free(msg);
7367 return;
7368 }
7369
7370 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7371 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7372
7373 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7374 if (!attr)
7375 goto nla_put_failure;
7376
7377 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7378 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7379 if (preauth)
7380 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7381
7382 nla_nest_end(msg, attr);
7383
7384 if (genlmsg_end(msg, hdr) < 0) {
7385 nlmsg_free(msg);
7386 return;
7387 }
7388
7389 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7390 nl80211_mlme_mcgrp.id, gfp);
7391 return;
7392
7393 nla_put_failure:
7394 genlmsg_cancel(msg, hdr);
7395 nlmsg_free(msg);
7396 }
7397
7398 void
7399 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7400 struct net_device *netdev, const u8 *peer,
7401 u32 num_packets, gfp_t gfp)
7402 {
7403 struct sk_buff *msg;
7404 struct nlattr *pinfoattr;
7405 void *hdr;
7406
7407 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7408 if (!msg)
7409 return;
7410
7411 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7412 if (!hdr) {
7413 nlmsg_free(msg);
7414 return;
7415 }
7416
7417 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7418 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7419 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7420
7421 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7422 if (!pinfoattr)
7423 goto nla_put_failure;
7424
7425 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7426
7427 nla_nest_end(msg, pinfoattr);
7428
7429 if (genlmsg_end(msg, hdr) < 0) {
7430 nlmsg_free(msg);
7431 return;
7432 }
7433
7434 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7435 nl80211_mlme_mcgrp.id, gfp);
7436 return;
7437
7438 nla_put_failure:
7439 genlmsg_cancel(msg, hdr);
7440 nlmsg_free(msg);
7441 }
7442
7443 static int nl80211_netlink_notify(struct notifier_block * nb,
7444 unsigned long state,
7445 void *_notify)
7446 {
7447 struct netlink_notify *notify = _notify;
7448 struct cfg80211_registered_device *rdev;
7449 struct wireless_dev *wdev;
7450
7451 if (state != NETLINK_URELEASE)
7452 return NOTIFY_DONE;
7453
7454 rcu_read_lock();
7455
7456 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7457 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7458 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7459
7460 rcu_read_unlock();
7461
7462 return NOTIFY_DONE;
7463 }
7464
7465 static struct notifier_block nl80211_netlink_notifier = {
7466 .notifier_call = nl80211_netlink_notify,
7467 };
7468
7469 /* initialisation/exit functions */
7470
7471 int nl80211_init(void)
7472 {
7473 int err;
7474
7475 err = genl_register_family_with_ops(&nl80211_fam,
7476 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7477 if (err)
7478 return err;
7479
7480 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7481 if (err)
7482 goto err_out;
7483
7484 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7485 if (err)
7486 goto err_out;
7487
7488 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7489 if (err)
7490 goto err_out;
7491
7492 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7493 if (err)
7494 goto err_out;
7495
7496 #ifdef CONFIG_NL80211_TESTMODE
7497 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7498 if (err)
7499 goto err_out;
7500 #endif
7501
7502 err = netlink_register_notifier(&nl80211_netlink_notifier);
7503 if (err)
7504 goto err_out;
7505
7506 return 0;
7507 err_out:
7508 genl_unregister_family(&nl80211_fam);
7509 return err;
7510 }
7511
7512 void nl80211_exit(void)
7513 {
7514 netlink_unregister_notifier(&nl80211_netlink_notifier);
7515 genl_unregister_family(&nl80211_fam);
7516 }
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