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[mirror_ubuntu-hirsute-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_ifindex(struct net *netns, struct nlattr **attrs,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 int ifindex;
55
56 if (!attrs[NL80211_ATTR_IFINDEX])
57 return -EINVAL;
58
59 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
60 *dev = dev_get_by_index(netns, ifindex);
61 if (!*dev)
62 return -ENODEV;
63
64 *rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
65 if (IS_ERR(*rdev)) {
66 dev_put(*dev);
67 return PTR_ERR(*rdev);
68 }
69
70 return 0;
71 }
72
73 /* policy for the attributes */
74 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
75 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
77 .len = 20-1 },
78 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
79 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
82 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
84 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
86
87 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
88 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
90
91 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
92 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
93
94 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
95 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
96 .len = WLAN_MAX_KEY_LEN },
97 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
98 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
99 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
100 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
101 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
102
103 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
104 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
105 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
106 .len = IEEE80211_MAX_DATA_LEN },
107 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
108 .len = IEEE80211_MAX_DATA_LEN },
109 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
110 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
111 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
112 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
113 .len = NL80211_MAX_SUPP_RATES },
114 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
115 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
116 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
117 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
118 .len = IEEE80211_MAX_MESH_ID_LEN },
119 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
120
121 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
122 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
123
124 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
125 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
128 .len = NL80211_MAX_SUPP_RATES },
129 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
130
131 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
132 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
133
134 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
135
136 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
137 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
138 .len = IEEE80211_MAX_DATA_LEN },
139 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
140 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
141
142 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
143 .len = IEEE80211_MAX_SSID_LEN },
144 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
145 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
146 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
147 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
148 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
149 [NL80211_ATTR_STA_FLAGS2] = {
150 .len = sizeof(struct nl80211_sta_flag_update),
151 },
152 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
153 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
154 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
156 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
157 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
158 [NL80211_ATTR_PID] = { .type = NLA_U32 },
159 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
160 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
161 .len = WLAN_PMKID_LEN },
162 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
163 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
164 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
165 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
166 .len = IEEE80211_MAX_DATA_LEN },
167 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
168 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
169 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
170 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
171 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
172 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
173 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
174 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
175 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
176 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
177 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
178 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
179 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
180 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
181 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
182 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
183 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
184 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
185 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
186 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
187 .len = IEEE80211_MAX_DATA_LEN },
188 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
191 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
192 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
193 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
194 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
195 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
196 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
197 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
198 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
199 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
200 .len = IEEE80211_MAX_DATA_LEN },
201 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
202 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
203 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
204 .len = NL80211_HT_CAPABILITY_LEN
205 },
206 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
207 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
208 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
209 };
210
211 /* policy for the key attributes */
212 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
213 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
214 [NL80211_KEY_IDX] = { .type = NLA_U8 },
215 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
216 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
217 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
218 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
219 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
220 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
221 };
222
223 /* policy for the key default flags */
224 static const struct nla_policy
225 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
226 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
227 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
228 };
229
230 /* policy for WoWLAN attributes */
231 static const struct nla_policy
232 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
233 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
234 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
235 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
236 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
237 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
238 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
239 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
240 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
241 };
242
243 /* policy for GTK rekey offload attributes */
244 static const struct nla_policy
245 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
246 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
247 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
248 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
249 };
250
251 static const struct nla_policy
252 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
253 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_SSID_LEN },
255 };
256
257 /* ifidx get helper */
258 static int nl80211_get_ifidx(struct netlink_callback *cb)
259 {
260 int res;
261
262 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
263 nl80211_fam.attrbuf, nl80211_fam.maxattr,
264 nl80211_policy);
265 if (res)
266 return res;
267
268 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
269 return -EINVAL;
270
271 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
272 if (!res)
273 return -EINVAL;
274 return res;
275 }
276
277 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
278 struct netlink_callback *cb,
279 struct cfg80211_registered_device **rdev,
280 struct net_device **dev)
281 {
282 int ifidx = cb->args[0];
283 int err;
284
285 if (!ifidx)
286 ifidx = nl80211_get_ifidx(cb);
287 if (ifidx < 0)
288 return ifidx;
289
290 cb->args[0] = ifidx;
291
292 rtnl_lock();
293
294 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
295 if (!*dev) {
296 err = -ENODEV;
297 goto out_rtnl;
298 }
299
300 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
301 if (IS_ERR(*rdev)) {
302 err = PTR_ERR(*rdev);
303 goto out_rtnl;
304 }
305
306 return 0;
307 out_rtnl:
308 rtnl_unlock();
309 return err;
310 }
311
312 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
313 {
314 cfg80211_unlock_rdev(rdev);
315 rtnl_unlock();
316 }
317
318 /* IE validation */
319 static bool is_valid_ie_attr(const struct nlattr *attr)
320 {
321 const u8 *pos;
322 int len;
323
324 if (!attr)
325 return true;
326
327 pos = nla_data(attr);
328 len = nla_len(attr);
329
330 while (len) {
331 u8 elemlen;
332
333 if (len < 2)
334 return false;
335 len -= 2;
336
337 elemlen = pos[1];
338 if (elemlen > len)
339 return false;
340
341 len -= elemlen;
342 pos += 2 + elemlen;
343 }
344
345 return true;
346 }
347
348 /* message building helper */
349 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
350 int flags, u8 cmd)
351 {
352 /* since there is no private header just add the generic one */
353 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
354 }
355
356 static int nl80211_msg_put_channel(struct sk_buff *msg,
357 struct ieee80211_channel *chan)
358 {
359 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
360 chan->center_freq);
361
362 if (chan->flags & IEEE80211_CHAN_DISABLED)
363 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
364 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
365 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
366 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
367 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
368 if (chan->flags & IEEE80211_CHAN_RADAR)
369 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
370
371 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
372 DBM_TO_MBM(chan->max_power));
373
374 return 0;
375
376 nla_put_failure:
377 return -ENOBUFS;
378 }
379
380 /* netlink command implementations */
381
382 struct key_parse {
383 struct key_params p;
384 int idx;
385 int type;
386 bool def, defmgmt;
387 bool def_uni, def_multi;
388 };
389
390 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
391 {
392 struct nlattr *tb[NL80211_KEY_MAX + 1];
393 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
394 nl80211_key_policy);
395 if (err)
396 return err;
397
398 k->def = !!tb[NL80211_KEY_DEFAULT];
399 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
400
401 if (k->def) {
402 k->def_uni = true;
403 k->def_multi = true;
404 }
405 if (k->defmgmt)
406 k->def_multi = true;
407
408 if (tb[NL80211_KEY_IDX])
409 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
410
411 if (tb[NL80211_KEY_DATA]) {
412 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
413 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
414 }
415
416 if (tb[NL80211_KEY_SEQ]) {
417 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
418 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
419 }
420
421 if (tb[NL80211_KEY_CIPHER])
422 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
423
424 if (tb[NL80211_KEY_TYPE]) {
425 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
426 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
427 return -EINVAL;
428 }
429
430 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
431 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
432 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
433 tb[NL80211_KEY_DEFAULT_TYPES],
434 nl80211_key_default_policy);
435 if (err)
436 return err;
437
438 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
439 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
440 }
441
442 return 0;
443 }
444
445 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
446 {
447 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
448 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
449 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
450 }
451
452 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
453 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
454 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
455 }
456
457 if (info->attrs[NL80211_ATTR_KEY_IDX])
458 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
459
460 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
461 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
462
463 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
464 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
465
466 if (k->def) {
467 k->def_uni = true;
468 k->def_multi = true;
469 }
470 if (k->defmgmt)
471 k->def_multi = true;
472
473 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
474 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
475 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
476 return -EINVAL;
477 }
478
479 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
480 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
481 int err = nla_parse_nested(
482 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
483 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
484 nl80211_key_default_policy);
485 if (err)
486 return err;
487
488 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
489 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
490 }
491
492 return 0;
493 }
494
495 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
496 {
497 int err;
498
499 memset(k, 0, sizeof(*k));
500 k->idx = -1;
501 k->type = -1;
502
503 if (info->attrs[NL80211_ATTR_KEY])
504 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
505 else
506 err = nl80211_parse_key_old(info, k);
507
508 if (err)
509 return err;
510
511 if (k->def && k->defmgmt)
512 return -EINVAL;
513
514 if (k->defmgmt) {
515 if (k->def_uni || !k->def_multi)
516 return -EINVAL;
517 }
518
519 if (k->idx != -1) {
520 if (k->defmgmt) {
521 if (k->idx < 4 || k->idx > 5)
522 return -EINVAL;
523 } else if (k->def) {
524 if (k->idx < 0 || k->idx > 3)
525 return -EINVAL;
526 } else {
527 if (k->idx < 0 || k->idx > 5)
528 return -EINVAL;
529 }
530 }
531
532 return 0;
533 }
534
535 static struct cfg80211_cached_keys *
536 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
537 struct nlattr *keys)
538 {
539 struct key_parse parse;
540 struct nlattr *key;
541 struct cfg80211_cached_keys *result;
542 int rem, err, def = 0;
543
544 result = kzalloc(sizeof(*result), GFP_KERNEL);
545 if (!result)
546 return ERR_PTR(-ENOMEM);
547
548 result->def = -1;
549 result->defmgmt = -1;
550
551 nla_for_each_nested(key, keys, rem) {
552 memset(&parse, 0, sizeof(parse));
553 parse.idx = -1;
554
555 err = nl80211_parse_key_new(key, &parse);
556 if (err)
557 goto error;
558 err = -EINVAL;
559 if (!parse.p.key)
560 goto error;
561 if (parse.idx < 0 || parse.idx > 4)
562 goto error;
563 if (parse.def) {
564 if (def)
565 goto error;
566 def = 1;
567 result->def = parse.idx;
568 if (!parse.def_uni || !parse.def_multi)
569 goto error;
570 } else if (parse.defmgmt)
571 goto error;
572 err = cfg80211_validate_key_settings(rdev, &parse.p,
573 parse.idx, false, NULL);
574 if (err)
575 goto error;
576 result->params[parse.idx].cipher = parse.p.cipher;
577 result->params[parse.idx].key_len = parse.p.key_len;
578 result->params[parse.idx].key = result->data[parse.idx];
579 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
580 }
581
582 return result;
583 error:
584 kfree(result);
585 return ERR_PTR(err);
586 }
587
588 static int nl80211_key_allowed(struct wireless_dev *wdev)
589 {
590 ASSERT_WDEV_LOCK(wdev);
591
592 switch (wdev->iftype) {
593 case NL80211_IFTYPE_AP:
594 case NL80211_IFTYPE_AP_VLAN:
595 case NL80211_IFTYPE_P2P_GO:
596 case NL80211_IFTYPE_MESH_POINT:
597 break;
598 case NL80211_IFTYPE_ADHOC:
599 if (!wdev->current_bss)
600 return -ENOLINK;
601 break;
602 case NL80211_IFTYPE_STATION:
603 case NL80211_IFTYPE_P2P_CLIENT:
604 if (wdev->sme_state != CFG80211_SME_CONNECTED)
605 return -ENOLINK;
606 break;
607 default:
608 return -EINVAL;
609 }
610
611 return 0;
612 }
613
614 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
615 {
616 struct nlattr *nl_modes = nla_nest_start(msg, attr);
617 int i;
618
619 if (!nl_modes)
620 goto nla_put_failure;
621
622 i = 0;
623 while (ifmodes) {
624 if (ifmodes & 1)
625 NLA_PUT_FLAG(msg, i);
626 ifmodes >>= 1;
627 i++;
628 }
629
630 nla_nest_end(msg, nl_modes);
631 return 0;
632
633 nla_put_failure:
634 return -ENOBUFS;
635 }
636
637 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
638 struct sk_buff *msg)
639 {
640 struct nlattr *nl_combis;
641 int i, j;
642
643 nl_combis = nla_nest_start(msg,
644 NL80211_ATTR_INTERFACE_COMBINATIONS);
645 if (!nl_combis)
646 goto nla_put_failure;
647
648 for (i = 0; i < wiphy->n_iface_combinations; i++) {
649 const struct ieee80211_iface_combination *c;
650 struct nlattr *nl_combi, *nl_limits;
651
652 c = &wiphy->iface_combinations[i];
653
654 nl_combi = nla_nest_start(msg, i + 1);
655 if (!nl_combi)
656 goto nla_put_failure;
657
658 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
659 if (!nl_limits)
660 goto nla_put_failure;
661
662 for (j = 0; j < c->n_limits; j++) {
663 struct nlattr *nl_limit;
664
665 nl_limit = nla_nest_start(msg, j + 1);
666 if (!nl_limit)
667 goto nla_put_failure;
668 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
669 c->limits[j].max);
670 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
671 c->limits[j].types))
672 goto nla_put_failure;
673 nla_nest_end(msg, nl_limit);
674 }
675
676 nla_nest_end(msg, nl_limits);
677
678 if (c->beacon_int_infra_match)
679 NLA_PUT_FLAG(msg,
680 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
681 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
682 c->num_different_channels);
683 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
684 c->max_interfaces);
685
686 nla_nest_end(msg, nl_combi);
687 }
688
689 nla_nest_end(msg, nl_combis);
690
691 return 0;
692 nla_put_failure:
693 return -ENOBUFS;
694 }
695
696 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
697 struct cfg80211_registered_device *dev)
698 {
699 void *hdr;
700 struct nlattr *nl_bands, *nl_band;
701 struct nlattr *nl_freqs, *nl_freq;
702 struct nlattr *nl_rates, *nl_rate;
703 struct nlattr *nl_cmds;
704 enum ieee80211_band band;
705 struct ieee80211_channel *chan;
706 struct ieee80211_rate *rate;
707 int i;
708 const struct ieee80211_txrx_stypes *mgmt_stypes =
709 dev->wiphy.mgmt_stypes;
710
711 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
712 if (!hdr)
713 return -1;
714
715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
716 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
717
718 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
719 cfg80211_rdev_list_generation);
720
721 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
722 dev->wiphy.retry_short);
723 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
724 dev->wiphy.retry_long);
725 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
726 dev->wiphy.frag_threshold);
727 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
728 dev->wiphy.rts_threshold);
729 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
730 dev->wiphy.coverage_class);
731 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
732 dev->wiphy.max_scan_ssids);
733 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
734 dev->wiphy.max_sched_scan_ssids);
735 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
736 dev->wiphy.max_scan_ie_len);
737 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
738 dev->wiphy.max_sched_scan_ie_len);
739 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
740 dev->wiphy.max_match_sets);
741
742 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
743 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
744 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
745 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
746 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
747 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
748 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
749 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
750 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
751 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
752 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
753 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
754
755 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
756 sizeof(u32) * dev->wiphy.n_cipher_suites,
757 dev->wiphy.cipher_suites);
758
759 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
760 dev->wiphy.max_num_pmkids);
761
762 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
763 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
764
765 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
766 dev->wiphy.available_antennas_tx);
767 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
768 dev->wiphy.available_antennas_rx);
769
770 if (dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD)
771 NLA_PUT_U32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
772 dev->wiphy.probe_resp_offload);
773
774 if ((dev->wiphy.available_antennas_tx ||
775 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
776 u32 tx_ant = 0, rx_ant = 0;
777 int res;
778 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
779 if (!res) {
780 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
781 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
782 }
783 }
784
785 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
786 dev->wiphy.interface_modes))
787 goto nla_put_failure;
788
789 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
790 if (!nl_bands)
791 goto nla_put_failure;
792
793 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
794 if (!dev->wiphy.bands[band])
795 continue;
796
797 nl_band = nla_nest_start(msg, band);
798 if (!nl_band)
799 goto nla_put_failure;
800
801 /* add HT info */
802 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
803 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
804 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
805 &dev->wiphy.bands[band]->ht_cap.mcs);
806 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
807 dev->wiphy.bands[band]->ht_cap.cap);
808 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
809 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
810 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
811 dev->wiphy.bands[band]->ht_cap.ampdu_density);
812 }
813
814 /* add frequencies */
815 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
816 if (!nl_freqs)
817 goto nla_put_failure;
818
819 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
820 nl_freq = nla_nest_start(msg, i);
821 if (!nl_freq)
822 goto nla_put_failure;
823
824 chan = &dev->wiphy.bands[band]->channels[i];
825
826 if (nl80211_msg_put_channel(msg, chan))
827 goto nla_put_failure;
828
829 nla_nest_end(msg, nl_freq);
830 }
831
832 nla_nest_end(msg, nl_freqs);
833
834 /* add bitrates */
835 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
836 if (!nl_rates)
837 goto nla_put_failure;
838
839 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
840 nl_rate = nla_nest_start(msg, i);
841 if (!nl_rate)
842 goto nla_put_failure;
843
844 rate = &dev->wiphy.bands[band]->bitrates[i];
845 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
846 rate->bitrate);
847 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
848 NLA_PUT_FLAG(msg,
849 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
850
851 nla_nest_end(msg, nl_rate);
852 }
853
854 nla_nest_end(msg, nl_rates);
855
856 nla_nest_end(msg, nl_band);
857 }
858 nla_nest_end(msg, nl_bands);
859
860 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
861 if (!nl_cmds)
862 goto nla_put_failure;
863
864 i = 0;
865 #define CMD(op, n) \
866 do { \
867 if (dev->ops->op) { \
868 i++; \
869 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
870 } \
871 } while (0)
872
873 CMD(add_virtual_intf, NEW_INTERFACE);
874 CMD(change_virtual_intf, SET_INTERFACE);
875 CMD(add_key, NEW_KEY);
876 CMD(start_ap, START_AP);
877 CMD(add_station, NEW_STATION);
878 CMD(add_mpath, NEW_MPATH);
879 CMD(update_mesh_config, SET_MESH_CONFIG);
880 CMD(change_bss, SET_BSS);
881 CMD(auth, AUTHENTICATE);
882 CMD(assoc, ASSOCIATE);
883 CMD(deauth, DEAUTHENTICATE);
884 CMD(disassoc, DISASSOCIATE);
885 CMD(join_ibss, JOIN_IBSS);
886 CMD(join_mesh, JOIN_MESH);
887 CMD(set_pmksa, SET_PMKSA);
888 CMD(del_pmksa, DEL_PMKSA);
889 CMD(flush_pmksa, FLUSH_PMKSA);
890 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
891 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
892 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
893 CMD(mgmt_tx, FRAME);
894 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
895 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
896 i++;
897 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
898 }
899 CMD(set_channel, SET_CHANNEL);
900 CMD(set_wds_peer, SET_WDS_PEER);
901 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
902 CMD(tdls_mgmt, TDLS_MGMT);
903 CMD(tdls_oper, TDLS_OPER);
904 }
905 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
906 CMD(sched_scan_start, START_SCHED_SCAN);
907 CMD(probe_client, PROBE_CLIENT);
908 CMD(set_noack_map, SET_NOACK_MAP);
909 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
910 i++;
911 NLA_PUT_U32(msg, i, NL80211_CMD_REGISTER_BEACONS);
912 }
913
914 #ifdef CONFIG_NL80211_TESTMODE
915 CMD(testmode_cmd, TESTMODE);
916 #endif
917
918 #undef CMD
919
920 if (dev->ops->connect || dev->ops->auth) {
921 i++;
922 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
923 }
924
925 if (dev->ops->disconnect || dev->ops->deauth) {
926 i++;
927 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
928 }
929
930 nla_nest_end(msg, nl_cmds);
931
932 if (dev->ops->remain_on_channel &&
933 dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
934 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
935 dev->wiphy.max_remain_on_channel_duration);
936
937 if (dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)
938 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
939
940 if (mgmt_stypes) {
941 u16 stypes;
942 struct nlattr *nl_ftypes, *nl_ifs;
943 enum nl80211_iftype ift;
944
945 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
946 if (!nl_ifs)
947 goto nla_put_failure;
948
949 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
950 nl_ftypes = nla_nest_start(msg, ift);
951 if (!nl_ftypes)
952 goto nla_put_failure;
953 i = 0;
954 stypes = mgmt_stypes[ift].tx;
955 while (stypes) {
956 if (stypes & 1)
957 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
958 (i << 4) | IEEE80211_FTYPE_MGMT);
959 stypes >>= 1;
960 i++;
961 }
962 nla_nest_end(msg, nl_ftypes);
963 }
964
965 nla_nest_end(msg, nl_ifs);
966
967 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
968 if (!nl_ifs)
969 goto nla_put_failure;
970
971 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
972 nl_ftypes = nla_nest_start(msg, ift);
973 if (!nl_ftypes)
974 goto nla_put_failure;
975 i = 0;
976 stypes = mgmt_stypes[ift].rx;
977 while (stypes) {
978 if (stypes & 1)
979 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
980 (i << 4) | IEEE80211_FTYPE_MGMT);
981 stypes >>= 1;
982 i++;
983 }
984 nla_nest_end(msg, nl_ftypes);
985 }
986 nla_nest_end(msg, nl_ifs);
987 }
988
989 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
990 struct nlattr *nl_wowlan;
991
992 nl_wowlan = nla_nest_start(msg,
993 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
994 if (!nl_wowlan)
995 goto nla_put_failure;
996
997 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
998 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
999 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
1000 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
1001 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
1002 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
1003 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
1004 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
1005 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
1006 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
1007 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
1008 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
1009 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
1010 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
1011 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
1012 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
1013 if (dev->wiphy.wowlan.n_patterns) {
1014 struct nl80211_wowlan_pattern_support pat = {
1015 .max_patterns = dev->wiphy.wowlan.n_patterns,
1016 .min_pattern_len =
1017 dev->wiphy.wowlan.pattern_min_len,
1018 .max_pattern_len =
1019 dev->wiphy.wowlan.pattern_max_len,
1020 };
1021 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1022 sizeof(pat), &pat);
1023 }
1024
1025 nla_nest_end(msg, nl_wowlan);
1026 }
1027
1028 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1029 dev->wiphy.software_iftypes))
1030 goto nla_put_failure;
1031
1032 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1033 goto nla_put_failure;
1034
1035 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME)
1036 NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_SME,
1037 dev->wiphy.ap_sme_capa);
1038
1039 NLA_PUT_U32(msg, NL80211_ATTR_FEATURE_FLAGS, dev->wiphy.features);
1040
1041 if (dev->wiphy.ht_capa_mod_mask)
1042 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1043 sizeof(*dev->wiphy.ht_capa_mod_mask),
1044 dev->wiphy.ht_capa_mod_mask);
1045
1046 return genlmsg_end(msg, hdr);
1047
1048 nla_put_failure:
1049 genlmsg_cancel(msg, hdr);
1050 return -EMSGSIZE;
1051 }
1052
1053 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1054 {
1055 int idx = 0;
1056 int start = cb->args[0];
1057 struct cfg80211_registered_device *dev;
1058
1059 mutex_lock(&cfg80211_mutex);
1060 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1061 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1062 continue;
1063 if (++idx <= start)
1064 continue;
1065 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1066 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1067 dev) < 0) {
1068 idx--;
1069 break;
1070 }
1071 }
1072 mutex_unlock(&cfg80211_mutex);
1073
1074 cb->args[0] = idx;
1075
1076 return skb->len;
1077 }
1078
1079 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1080 {
1081 struct sk_buff *msg;
1082 struct cfg80211_registered_device *dev = info->user_ptr[0];
1083
1084 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1085 if (!msg)
1086 return -ENOMEM;
1087
1088 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1089 nlmsg_free(msg);
1090 return -ENOBUFS;
1091 }
1092
1093 return genlmsg_reply(msg, info);
1094 }
1095
1096 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1097 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1098 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1099 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1100 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1101 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1102 };
1103
1104 static int parse_txq_params(struct nlattr *tb[],
1105 struct ieee80211_txq_params *txq_params)
1106 {
1107 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1108 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1109 !tb[NL80211_TXQ_ATTR_AIFS])
1110 return -EINVAL;
1111
1112 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1113 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1114 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1115 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1116 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1117
1118 return 0;
1119 }
1120
1121 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1122 {
1123 /*
1124 * You can only set the channel explicitly for AP, mesh
1125 * and WDS type interfaces; all others have their channel
1126 * managed via their respective "establish a connection"
1127 * command (connect, join, ...)
1128 *
1129 * Monitors are special as they are normally slaved to
1130 * whatever else is going on, so they behave as though
1131 * you tried setting the wiphy channel itself.
1132 */
1133 return !wdev ||
1134 wdev->iftype == NL80211_IFTYPE_AP ||
1135 wdev->iftype == NL80211_IFTYPE_WDS ||
1136 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1137 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1138 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1139 }
1140
1141 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1142 struct wireless_dev *wdev,
1143 struct genl_info *info)
1144 {
1145 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1146 u32 freq;
1147 int result;
1148
1149 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1150 return -EINVAL;
1151
1152 if (!nl80211_can_set_dev_channel(wdev))
1153 return -EOPNOTSUPP;
1154
1155 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1156 channel_type = nla_get_u32(info->attrs[
1157 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1158 if (channel_type != NL80211_CHAN_NO_HT &&
1159 channel_type != NL80211_CHAN_HT20 &&
1160 channel_type != NL80211_CHAN_HT40PLUS &&
1161 channel_type != NL80211_CHAN_HT40MINUS)
1162 return -EINVAL;
1163 }
1164
1165 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1166
1167 mutex_lock(&rdev->devlist_mtx);
1168 if (wdev) {
1169 wdev_lock(wdev);
1170 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1171 wdev_unlock(wdev);
1172 } else {
1173 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1174 }
1175 mutex_unlock(&rdev->devlist_mtx);
1176
1177 return result;
1178 }
1179
1180 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1181 {
1182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1183 struct net_device *netdev = info->user_ptr[1];
1184
1185 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1186 }
1187
1188 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1189 {
1190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1191 struct net_device *dev = info->user_ptr[1];
1192 struct wireless_dev *wdev = dev->ieee80211_ptr;
1193 const u8 *bssid;
1194
1195 if (!info->attrs[NL80211_ATTR_MAC])
1196 return -EINVAL;
1197
1198 if (netif_running(dev))
1199 return -EBUSY;
1200
1201 if (!rdev->ops->set_wds_peer)
1202 return -EOPNOTSUPP;
1203
1204 if (wdev->iftype != NL80211_IFTYPE_WDS)
1205 return -EOPNOTSUPP;
1206
1207 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1208 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1209 }
1210
1211
1212 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1213 {
1214 struct cfg80211_registered_device *rdev;
1215 struct net_device *netdev = NULL;
1216 struct wireless_dev *wdev;
1217 int result = 0, rem_txq_params = 0;
1218 struct nlattr *nl_txq_params;
1219 u32 changed;
1220 u8 retry_short = 0, retry_long = 0;
1221 u32 frag_threshold = 0, rts_threshold = 0;
1222 u8 coverage_class = 0;
1223
1224 /*
1225 * Try to find the wiphy and netdev. Normally this
1226 * function shouldn't need the netdev, but this is
1227 * done for backward compatibility -- previously
1228 * setting the channel was done per wiphy, but now
1229 * it is per netdev. Previous userland like hostapd
1230 * also passed a netdev to set_wiphy, so that it is
1231 * possible to let that go to the right netdev!
1232 */
1233 mutex_lock(&cfg80211_mutex);
1234
1235 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1236 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1237
1238 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1239 if (netdev && netdev->ieee80211_ptr) {
1240 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1241 mutex_lock(&rdev->mtx);
1242 } else
1243 netdev = NULL;
1244 }
1245
1246 if (!netdev) {
1247 rdev = __cfg80211_rdev_from_info(info);
1248 if (IS_ERR(rdev)) {
1249 mutex_unlock(&cfg80211_mutex);
1250 return PTR_ERR(rdev);
1251 }
1252 wdev = NULL;
1253 netdev = NULL;
1254 result = 0;
1255
1256 mutex_lock(&rdev->mtx);
1257 } else if (netif_running(netdev) &&
1258 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1259 wdev = netdev->ieee80211_ptr;
1260 else
1261 wdev = NULL;
1262
1263 /*
1264 * end workaround code, by now the rdev is available
1265 * and locked, and wdev may or may not be NULL.
1266 */
1267
1268 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1269 result = cfg80211_dev_rename(
1270 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1271
1272 mutex_unlock(&cfg80211_mutex);
1273
1274 if (result)
1275 goto bad_res;
1276
1277 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1278 struct ieee80211_txq_params txq_params;
1279 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1280
1281 if (!rdev->ops->set_txq_params) {
1282 result = -EOPNOTSUPP;
1283 goto bad_res;
1284 }
1285
1286 if (!netdev) {
1287 result = -EINVAL;
1288 goto bad_res;
1289 }
1290
1291 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1292 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1293 result = -EINVAL;
1294 goto bad_res;
1295 }
1296
1297 nla_for_each_nested(nl_txq_params,
1298 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1299 rem_txq_params) {
1300 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1301 nla_data(nl_txq_params),
1302 nla_len(nl_txq_params),
1303 txq_params_policy);
1304 result = parse_txq_params(tb, &txq_params);
1305 if (result)
1306 goto bad_res;
1307
1308 result = rdev->ops->set_txq_params(&rdev->wiphy,
1309 netdev,
1310 &txq_params);
1311 if (result)
1312 goto bad_res;
1313 }
1314 }
1315
1316 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1317 result = __nl80211_set_channel(rdev, wdev, info);
1318 if (result)
1319 goto bad_res;
1320 }
1321
1322 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1323 enum nl80211_tx_power_setting type;
1324 int idx, mbm = 0;
1325
1326 if (!rdev->ops->set_tx_power) {
1327 result = -EOPNOTSUPP;
1328 goto bad_res;
1329 }
1330
1331 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1332 type = nla_get_u32(info->attrs[idx]);
1333
1334 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1335 (type != NL80211_TX_POWER_AUTOMATIC)) {
1336 result = -EINVAL;
1337 goto bad_res;
1338 }
1339
1340 if (type != NL80211_TX_POWER_AUTOMATIC) {
1341 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1342 mbm = nla_get_u32(info->attrs[idx]);
1343 }
1344
1345 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1346 if (result)
1347 goto bad_res;
1348 }
1349
1350 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1351 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1352 u32 tx_ant, rx_ant;
1353 if ((!rdev->wiphy.available_antennas_tx &&
1354 !rdev->wiphy.available_antennas_rx) ||
1355 !rdev->ops->set_antenna) {
1356 result = -EOPNOTSUPP;
1357 goto bad_res;
1358 }
1359
1360 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1361 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1362
1363 /* reject antenna configurations which don't match the
1364 * available antenna masks, except for the "all" mask */
1365 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1366 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1367 result = -EINVAL;
1368 goto bad_res;
1369 }
1370
1371 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1372 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1373
1374 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1375 if (result)
1376 goto bad_res;
1377 }
1378
1379 changed = 0;
1380
1381 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1382 retry_short = nla_get_u8(
1383 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1384 if (retry_short == 0) {
1385 result = -EINVAL;
1386 goto bad_res;
1387 }
1388 changed |= WIPHY_PARAM_RETRY_SHORT;
1389 }
1390
1391 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1392 retry_long = nla_get_u8(
1393 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1394 if (retry_long == 0) {
1395 result = -EINVAL;
1396 goto bad_res;
1397 }
1398 changed |= WIPHY_PARAM_RETRY_LONG;
1399 }
1400
1401 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1402 frag_threshold = nla_get_u32(
1403 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1404 if (frag_threshold < 256) {
1405 result = -EINVAL;
1406 goto bad_res;
1407 }
1408 if (frag_threshold != (u32) -1) {
1409 /*
1410 * Fragments (apart from the last one) are required to
1411 * have even length. Make the fragmentation code
1412 * simpler by stripping LSB should someone try to use
1413 * odd threshold value.
1414 */
1415 frag_threshold &= ~0x1;
1416 }
1417 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1418 }
1419
1420 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1421 rts_threshold = nla_get_u32(
1422 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1423 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1424 }
1425
1426 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1427 coverage_class = nla_get_u8(
1428 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1429 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1430 }
1431
1432 if (changed) {
1433 u8 old_retry_short, old_retry_long;
1434 u32 old_frag_threshold, old_rts_threshold;
1435 u8 old_coverage_class;
1436
1437 if (!rdev->ops->set_wiphy_params) {
1438 result = -EOPNOTSUPP;
1439 goto bad_res;
1440 }
1441
1442 old_retry_short = rdev->wiphy.retry_short;
1443 old_retry_long = rdev->wiphy.retry_long;
1444 old_frag_threshold = rdev->wiphy.frag_threshold;
1445 old_rts_threshold = rdev->wiphy.rts_threshold;
1446 old_coverage_class = rdev->wiphy.coverage_class;
1447
1448 if (changed & WIPHY_PARAM_RETRY_SHORT)
1449 rdev->wiphy.retry_short = retry_short;
1450 if (changed & WIPHY_PARAM_RETRY_LONG)
1451 rdev->wiphy.retry_long = retry_long;
1452 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1453 rdev->wiphy.frag_threshold = frag_threshold;
1454 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1455 rdev->wiphy.rts_threshold = rts_threshold;
1456 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1457 rdev->wiphy.coverage_class = coverage_class;
1458
1459 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1460 if (result) {
1461 rdev->wiphy.retry_short = old_retry_short;
1462 rdev->wiphy.retry_long = old_retry_long;
1463 rdev->wiphy.frag_threshold = old_frag_threshold;
1464 rdev->wiphy.rts_threshold = old_rts_threshold;
1465 rdev->wiphy.coverage_class = old_coverage_class;
1466 }
1467 }
1468
1469 bad_res:
1470 mutex_unlock(&rdev->mtx);
1471 if (netdev)
1472 dev_put(netdev);
1473 return result;
1474 }
1475
1476
1477 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1478 struct cfg80211_registered_device *rdev,
1479 struct net_device *dev)
1480 {
1481 void *hdr;
1482
1483 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1484 if (!hdr)
1485 return -1;
1486
1487 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1488 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1489 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1490 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1491
1492 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1493 rdev->devlist_generation ^
1494 (cfg80211_rdev_list_generation << 2));
1495
1496 return genlmsg_end(msg, hdr);
1497
1498 nla_put_failure:
1499 genlmsg_cancel(msg, hdr);
1500 return -EMSGSIZE;
1501 }
1502
1503 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1504 {
1505 int wp_idx = 0;
1506 int if_idx = 0;
1507 int wp_start = cb->args[0];
1508 int if_start = cb->args[1];
1509 struct cfg80211_registered_device *rdev;
1510 struct wireless_dev *wdev;
1511
1512 mutex_lock(&cfg80211_mutex);
1513 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1514 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1515 continue;
1516 if (wp_idx < wp_start) {
1517 wp_idx++;
1518 continue;
1519 }
1520 if_idx = 0;
1521
1522 mutex_lock(&rdev->devlist_mtx);
1523 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1524 if (if_idx < if_start) {
1525 if_idx++;
1526 continue;
1527 }
1528 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1529 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1530 rdev, wdev->netdev) < 0) {
1531 mutex_unlock(&rdev->devlist_mtx);
1532 goto out;
1533 }
1534 if_idx++;
1535 }
1536 mutex_unlock(&rdev->devlist_mtx);
1537
1538 wp_idx++;
1539 }
1540 out:
1541 mutex_unlock(&cfg80211_mutex);
1542
1543 cb->args[0] = wp_idx;
1544 cb->args[1] = if_idx;
1545
1546 return skb->len;
1547 }
1548
1549 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1550 {
1551 struct sk_buff *msg;
1552 struct cfg80211_registered_device *dev = info->user_ptr[0];
1553 struct net_device *netdev = info->user_ptr[1];
1554
1555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1556 if (!msg)
1557 return -ENOMEM;
1558
1559 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1560 dev, netdev) < 0) {
1561 nlmsg_free(msg);
1562 return -ENOBUFS;
1563 }
1564
1565 return genlmsg_reply(msg, info);
1566 }
1567
1568 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1569 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1570 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1571 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1572 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1573 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1574 };
1575
1576 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1577 {
1578 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1579 int flag;
1580
1581 *mntrflags = 0;
1582
1583 if (!nla)
1584 return -EINVAL;
1585
1586 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1587 nla, mntr_flags_policy))
1588 return -EINVAL;
1589
1590 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1591 if (flags[flag])
1592 *mntrflags |= (1<<flag);
1593
1594 return 0;
1595 }
1596
1597 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1598 struct net_device *netdev, u8 use_4addr,
1599 enum nl80211_iftype iftype)
1600 {
1601 if (!use_4addr) {
1602 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1603 return -EBUSY;
1604 return 0;
1605 }
1606
1607 switch (iftype) {
1608 case NL80211_IFTYPE_AP_VLAN:
1609 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1610 return 0;
1611 break;
1612 case NL80211_IFTYPE_STATION:
1613 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1614 return 0;
1615 break;
1616 default:
1617 break;
1618 }
1619
1620 return -EOPNOTSUPP;
1621 }
1622
1623 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1624 {
1625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1626 struct vif_params params;
1627 int err;
1628 enum nl80211_iftype otype, ntype;
1629 struct net_device *dev = info->user_ptr[1];
1630 u32 _flags, *flags = NULL;
1631 bool change = false;
1632
1633 memset(&params, 0, sizeof(params));
1634
1635 otype = ntype = dev->ieee80211_ptr->iftype;
1636
1637 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1638 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1639 if (otype != ntype)
1640 change = true;
1641 if (ntype > NL80211_IFTYPE_MAX)
1642 return -EINVAL;
1643 }
1644
1645 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1646 struct wireless_dev *wdev = dev->ieee80211_ptr;
1647
1648 if (ntype != NL80211_IFTYPE_MESH_POINT)
1649 return -EINVAL;
1650 if (netif_running(dev))
1651 return -EBUSY;
1652
1653 wdev_lock(wdev);
1654 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1655 IEEE80211_MAX_MESH_ID_LEN);
1656 wdev->mesh_id_up_len =
1657 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1658 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1659 wdev->mesh_id_up_len);
1660 wdev_unlock(wdev);
1661 }
1662
1663 if (info->attrs[NL80211_ATTR_4ADDR]) {
1664 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1665 change = true;
1666 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1667 if (err)
1668 return err;
1669 } else {
1670 params.use_4addr = -1;
1671 }
1672
1673 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1674 if (ntype != NL80211_IFTYPE_MONITOR)
1675 return -EINVAL;
1676 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1677 &_flags);
1678 if (err)
1679 return err;
1680
1681 flags = &_flags;
1682 change = true;
1683 }
1684
1685 if (change)
1686 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1687 else
1688 err = 0;
1689
1690 if (!err && params.use_4addr != -1)
1691 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1692
1693 return err;
1694 }
1695
1696 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1697 {
1698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1699 struct vif_params params;
1700 struct net_device *dev;
1701 int err;
1702 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1703 u32 flags;
1704
1705 memset(&params, 0, sizeof(params));
1706
1707 if (!info->attrs[NL80211_ATTR_IFNAME])
1708 return -EINVAL;
1709
1710 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1711 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1712 if (type > NL80211_IFTYPE_MAX)
1713 return -EINVAL;
1714 }
1715
1716 if (!rdev->ops->add_virtual_intf ||
1717 !(rdev->wiphy.interface_modes & (1 << type)))
1718 return -EOPNOTSUPP;
1719
1720 if (info->attrs[NL80211_ATTR_4ADDR]) {
1721 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1722 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1723 if (err)
1724 return err;
1725 }
1726
1727 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1728 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1729 &flags);
1730 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1731 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1732 type, err ? NULL : &flags, &params);
1733 if (IS_ERR(dev))
1734 return PTR_ERR(dev);
1735
1736 if (type == NL80211_IFTYPE_MESH_POINT &&
1737 info->attrs[NL80211_ATTR_MESH_ID]) {
1738 struct wireless_dev *wdev = dev->ieee80211_ptr;
1739
1740 wdev_lock(wdev);
1741 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1742 IEEE80211_MAX_MESH_ID_LEN);
1743 wdev->mesh_id_up_len =
1744 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1745 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1746 wdev->mesh_id_up_len);
1747 wdev_unlock(wdev);
1748 }
1749
1750 return 0;
1751 }
1752
1753 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1754 {
1755 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1756 struct net_device *dev = info->user_ptr[1];
1757
1758 if (!rdev->ops->del_virtual_intf)
1759 return -EOPNOTSUPP;
1760
1761 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1762 }
1763
1764 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1765 {
1766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1767 struct net_device *dev = info->user_ptr[1];
1768 u16 noack_map;
1769
1770 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1771 return -EINVAL;
1772
1773 if (!rdev->ops->set_noack_map)
1774 return -EOPNOTSUPP;
1775
1776 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1777
1778 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1779 }
1780
1781 struct get_key_cookie {
1782 struct sk_buff *msg;
1783 int error;
1784 int idx;
1785 };
1786
1787 static void get_key_callback(void *c, struct key_params *params)
1788 {
1789 struct nlattr *key;
1790 struct get_key_cookie *cookie = c;
1791
1792 if (params->key)
1793 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1794 params->key_len, params->key);
1795
1796 if (params->seq)
1797 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1798 params->seq_len, params->seq);
1799
1800 if (params->cipher)
1801 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1802 params->cipher);
1803
1804 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1805 if (!key)
1806 goto nla_put_failure;
1807
1808 if (params->key)
1809 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1810 params->key_len, params->key);
1811
1812 if (params->seq)
1813 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1814 params->seq_len, params->seq);
1815
1816 if (params->cipher)
1817 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1818 params->cipher);
1819
1820 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1821
1822 nla_nest_end(cookie->msg, key);
1823
1824 return;
1825 nla_put_failure:
1826 cookie->error = 1;
1827 }
1828
1829 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1830 {
1831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1832 int err;
1833 struct net_device *dev = info->user_ptr[1];
1834 u8 key_idx = 0;
1835 const u8 *mac_addr = NULL;
1836 bool pairwise;
1837 struct get_key_cookie cookie = {
1838 .error = 0,
1839 };
1840 void *hdr;
1841 struct sk_buff *msg;
1842
1843 if (info->attrs[NL80211_ATTR_KEY_IDX])
1844 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1845
1846 if (key_idx > 5)
1847 return -EINVAL;
1848
1849 if (info->attrs[NL80211_ATTR_MAC])
1850 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1851
1852 pairwise = !!mac_addr;
1853 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1854 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1855 if (kt >= NUM_NL80211_KEYTYPES)
1856 return -EINVAL;
1857 if (kt != NL80211_KEYTYPE_GROUP &&
1858 kt != NL80211_KEYTYPE_PAIRWISE)
1859 return -EINVAL;
1860 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1861 }
1862
1863 if (!rdev->ops->get_key)
1864 return -EOPNOTSUPP;
1865
1866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1867 if (!msg)
1868 return -ENOMEM;
1869
1870 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1871 NL80211_CMD_NEW_KEY);
1872 if (IS_ERR(hdr))
1873 return PTR_ERR(hdr);
1874
1875 cookie.msg = msg;
1876 cookie.idx = key_idx;
1877
1878 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1879 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1880 if (mac_addr)
1881 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1882
1883 if (pairwise && mac_addr &&
1884 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1885 return -ENOENT;
1886
1887 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1888 mac_addr, &cookie, get_key_callback);
1889
1890 if (err)
1891 goto free_msg;
1892
1893 if (cookie.error)
1894 goto nla_put_failure;
1895
1896 genlmsg_end(msg, hdr);
1897 return genlmsg_reply(msg, info);
1898
1899 nla_put_failure:
1900 err = -ENOBUFS;
1901 free_msg:
1902 nlmsg_free(msg);
1903 return err;
1904 }
1905
1906 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1907 {
1908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1909 struct key_parse key;
1910 int err;
1911 struct net_device *dev = info->user_ptr[1];
1912
1913 err = nl80211_parse_key(info, &key);
1914 if (err)
1915 return err;
1916
1917 if (key.idx < 0)
1918 return -EINVAL;
1919
1920 /* only support setting default key */
1921 if (!key.def && !key.defmgmt)
1922 return -EINVAL;
1923
1924 wdev_lock(dev->ieee80211_ptr);
1925
1926 if (key.def) {
1927 if (!rdev->ops->set_default_key) {
1928 err = -EOPNOTSUPP;
1929 goto out;
1930 }
1931
1932 err = nl80211_key_allowed(dev->ieee80211_ptr);
1933 if (err)
1934 goto out;
1935
1936 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1937 key.def_uni, key.def_multi);
1938
1939 if (err)
1940 goto out;
1941
1942 #ifdef CONFIG_CFG80211_WEXT
1943 dev->ieee80211_ptr->wext.default_key = key.idx;
1944 #endif
1945 } else {
1946 if (key.def_uni || !key.def_multi) {
1947 err = -EINVAL;
1948 goto out;
1949 }
1950
1951 if (!rdev->ops->set_default_mgmt_key) {
1952 err = -EOPNOTSUPP;
1953 goto out;
1954 }
1955
1956 err = nl80211_key_allowed(dev->ieee80211_ptr);
1957 if (err)
1958 goto out;
1959
1960 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1961 dev, key.idx);
1962 if (err)
1963 goto out;
1964
1965 #ifdef CONFIG_CFG80211_WEXT
1966 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1967 #endif
1968 }
1969
1970 out:
1971 wdev_unlock(dev->ieee80211_ptr);
1972
1973 return err;
1974 }
1975
1976 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1977 {
1978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1979 int err;
1980 struct net_device *dev = info->user_ptr[1];
1981 struct key_parse key;
1982 const u8 *mac_addr = NULL;
1983
1984 err = nl80211_parse_key(info, &key);
1985 if (err)
1986 return err;
1987
1988 if (!key.p.key)
1989 return -EINVAL;
1990
1991 if (info->attrs[NL80211_ATTR_MAC])
1992 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1993
1994 if (key.type == -1) {
1995 if (mac_addr)
1996 key.type = NL80211_KEYTYPE_PAIRWISE;
1997 else
1998 key.type = NL80211_KEYTYPE_GROUP;
1999 }
2000
2001 /* for now */
2002 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2003 key.type != NL80211_KEYTYPE_GROUP)
2004 return -EINVAL;
2005
2006 if (!rdev->ops->add_key)
2007 return -EOPNOTSUPP;
2008
2009 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2010 key.type == NL80211_KEYTYPE_PAIRWISE,
2011 mac_addr))
2012 return -EINVAL;
2013
2014 wdev_lock(dev->ieee80211_ptr);
2015 err = nl80211_key_allowed(dev->ieee80211_ptr);
2016 if (!err)
2017 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2018 key.type == NL80211_KEYTYPE_PAIRWISE,
2019 mac_addr, &key.p);
2020 wdev_unlock(dev->ieee80211_ptr);
2021
2022 return err;
2023 }
2024
2025 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 int err;
2029 struct net_device *dev = info->user_ptr[1];
2030 u8 *mac_addr = NULL;
2031 struct key_parse key;
2032
2033 err = nl80211_parse_key(info, &key);
2034 if (err)
2035 return err;
2036
2037 if (info->attrs[NL80211_ATTR_MAC])
2038 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2039
2040 if (key.type == -1) {
2041 if (mac_addr)
2042 key.type = NL80211_KEYTYPE_PAIRWISE;
2043 else
2044 key.type = NL80211_KEYTYPE_GROUP;
2045 }
2046
2047 /* for now */
2048 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2049 key.type != NL80211_KEYTYPE_GROUP)
2050 return -EINVAL;
2051
2052 if (!rdev->ops->del_key)
2053 return -EOPNOTSUPP;
2054
2055 wdev_lock(dev->ieee80211_ptr);
2056 err = nl80211_key_allowed(dev->ieee80211_ptr);
2057
2058 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2059 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2060 err = -ENOENT;
2061
2062 if (!err)
2063 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2064 key.type == NL80211_KEYTYPE_PAIRWISE,
2065 mac_addr);
2066
2067 #ifdef CONFIG_CFG80211_WEXT
2068 if (!err) {
2069 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2070 dev->ieee80211_ptr->wext.default_key = -1;
2071 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2072 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2073 }
2074 #endif
2075 wdev_unlock(dev->ieee80211_ptr);
2076
2077 return err;
2078 }
2079
2080 static int nl80211_parse_beacon(struct genl_info *info,
2081 struct cfg80211_beacon_data *bcn)
2082 {
2083 bool haveinfo = false;
2084
2085 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2086 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2087 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2088 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2089 return -EINVAL;
2090
2091 memset(bcn, 0, sizeof(*bcn));
2092
2093 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2094 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2095 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2096 if (!bcn->head_len)
2097 return -EINVAL;
2098 haveinfo = true;
2099 }
2100
2101 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2102 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2103 bcn->tail_len =
2104 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2105 haveinfo = true;
2106 }
2107
2108 if (!haveinfo)
2109 return -EINVAL;
2110
2111 if (info->attrs[NL80211_ATTR_IE]) {
2112 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2113 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2114 }
2115
2116 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2117 bcn->proberesp_ies =
2118 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2119 bcn->proberesp_ies_len =
2120 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2121 }
2122
2123 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2124 bcn->assocresp_ies =
2125 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2126 bcn->assocresp_ies_len =
2127 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2128 }
2129
2130 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2131 bcn->probe_resp =
2132 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2133 bcn->probe_resp_len =
2134 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2135 }
2136
2137 return 0;
2138 }
2139
2140 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2141 {
2142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2143 struct net_device *dev = info->user_ptr[1];
2144 struct wireless_dev *wdev = dev->ieee80211_ptr;
2145 struct cfg80211_ap_settings params;
2146 int err;
2147
2148 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2149 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2150 return -EOPNOTSUPP;
2151
2152 if (!rdev->ops->start_ap)
2153 return -EOPNOTSUPP;
2154
2155 if (wdev->beacon_interval)
2156 return -EALREADY;
2157
2158 memset(&params, 0, sizeof(params));
2159
2160 /* these are required for START_AP */
2161 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2162 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2163 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2164 return -EINVAL;
2165
2166 err = nl80211_parse_beacon(info, &params.beacon);
2167 if (err)
2168 return err;
2169
2170 params.beacon_interval =
2171 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2172 params.dtim_period =
2173 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2174
2175 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2176 if (err)
2177 return err;
2178
2179 /*
2180 * In theory, some of these attributes should be required here
2181 * but since they were not used when the command was originally
2182 * added, keep them optional for old user space programs to let
2183 * them continue to work with drivers that do not need the
2184 * additional information -- drivers must check!
2185 */
2186 if (info->attrs[NL80211_ATTR_SSID]) {
2187 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2188 params.ssid_len =
2189 nla_len(info->attrs[NL80211_ATTR_SSID]);
2190 if (params.ssid_len == 0 ||
2191 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2192 return -EINVAL;
2193 }
2194
2195 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2196 params.hidden_ssid = nla_get_u32(
2197 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2198 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2199 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2200 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2201 return -EINVAL;
2202 }
2203
2204 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2205
2206 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2207 params.auth_type = nla_get_u32(
2208 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2209 if (!nl80211_valid_auth_type(params.auth_type))
2210 return -EINVAL;
2211 } else
2212 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2213
2214 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2215 NL80211_MAX_NR_CIPHER_SUITES);
2216 if (err)
2217 return err;
2218
2219 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2220 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2221 return -EOPNOTSUPP;
2222 params.inactivity_timeout = nla_get_u16(
2223 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2224 }
2225
2226 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2227 if (!err)
2228 wdev->beacon_interval = params.beacon_interval;
2229 return err;
2230 }
2231
2232 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2233 {
2234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2235 struct net_device *dev = info->user_ptr[1];
2236 struct wireless_dev *wdev = dev->ieee80211_ptr;
2237 struct cfg80211_beacon_data params;
2238 int err;
2239
2240 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2241 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2242 return -EOPNOTSUPP;
2243
2244 if (!rdev->ops->change_beacon)
2245 return -EOPNOTSUPP;
2246
2247 if (!wdev->beacon_interval)
2248 return -EINVAL;
2249
2250 err = nl80211_parse_beacon(info, &params);
2251 if (err)
2252 return err;
2253
2254 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2255 }
2256
2257 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2258 {
2259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2260 struct net_device *dev = info->user_ptr[1];
2261 struct wireless_dev *wdev = dev->ieee80211_ptr;
2262 int err;
2263
2264 if (!rdev->ops->stop_ap)
2265 return -EOPNOTSUPP;
2266
2267 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2268 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2269 return -EOPNOTSUPP;
2270
2271 if (!wdev->beacon_interval)
2272 return -ENOENT;
2273
2274 err = rdev->ops->stop_ap(&rdev->wiphy, dev);
2275 if (!err)
2276 wdev->beacon_interval = 0;
2277 return err;
2278 }
2279
2280 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2281 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2282 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2283 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2284 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2285 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2286 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2287 };
2288
2289 static int parse_station_flags(struct genl_info *info,
2290 enum nl80211_iftype iftype,
2291 struct station_parameters *params)
2292 {
2293 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2294 struct nlattr *nla;
2295 int flag;
2296
2297 /*
2298 * Try parsing the new attribute first so userspace
2299 * can specify both for older kernels.
2300 */
2301 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2302 if (nla) {
2303 struct nl80211_sta_flag_update *sta_flags;
2304
2305 sta_flags = nla_data(nla);
2306 params->sta_flags_mask = sta_flags->mask;
2307 params->sta_flags_set = sta_flags->set;
2308 if ((params->sta_flags_mask |
2309 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2310 return -EINVAL;
2311 return 0;
2312 }
2313
2314 /* if present, parse the old attribute */
2315
2316 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2317 if (!nla)
2318 return 0;
2319
2320 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2321 nla, sta_flags_policy))
2322 return -EINVAL;
2323
2324 /*
2325 * Only allow certain flags for interface types so that
2326 * other attributes are silently ignored. Remember that
2327 * this is backward compatibility code with old userspace
2328 * and shouldn't be hit in other cases anyway.
2329 */
2330 switch (iftype) {
2331 case NL80211_IFTYPE_AP:
2332 case NL80211_IFTYPE_AP_VLAN:
2333 case NL80211_IFTYPE_P2P_GO:
2334 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2335 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2336 BIT(NL80211_STA_FLAG_WME) |
2337 BIT(NL80211_STA_FLAG_MFP);
2338 break;
2339 case NL80211_IFTYPE_P2P_CLIENT:
2340 case NL80211_IFTYPE_STATION:
2341 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2342 BIT(NL80211_STA_FLAG_TDLS_PEER);
2343 break;
2344 case NL80211_IFTYPE_MESH_POINT:
2345 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2346 BIT(NL80211_STA_FLAG_MFP) |
2347 BIT(NL80211_STA_FLAG_AUTHORIZED);
2348 default:
2349 return -EINVAL;
2350 }
2351
2352 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2353 if (flags[flag])
2354 params->sta_flags_set |= (1<<flag);
2355
2356 return 0;
2357 }
2358
2359 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2360 int attr)
2361 {
2362 struct nlattr *rate;
2363 u16 bitrate;
2364
2365 rate = nla_nest_start(msg, attr);
2366 if (!rate)
2367 goto nla_put_failure;
2368
2369 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2370 bitrate = cfg80211_calculate_bitrate(info);
2371 if (bitrate > 0)
2372 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2373
2374 if (info->flags & RATE_INFO_FLAGS_MCS)
2375 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2376 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2377 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2378 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2379 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2380
2381 nla_nest_end(msg, rate);
2382 return true;
2383
2384 nla_put_failure:
2385 return false;
2386 }
2387
2388 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2389 int flags, struct net_device *dev,
2390 const u8 *mac_addr, struct station_info *sinfo)
2391 {
2392 void *hdr;
2393 struct nlattr *sinfoattr, *bss_param;
2394
2395 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2396 if (!hdr)
2397 return -1;
2398
2399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2400 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2401
2402 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2403
2404 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2405 if (!sinfoattr)
2406 goto nla_put_failure;
2407 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2408 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2409 sinfo->connected_time);
2410 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2411 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2412 sinfo->inactive_time);
2413 if (sinfo->filled & STATION_INFO_RX_BYTES)
2414 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2415 sinfo->rx_bytes);
2416 if (sinfo->filled & STATION_INFO_TX_BYTES)
2417 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2418 sinfo->tx_bytes);
2419 if (sinfo->filled & STATION_INFO_LLID)
2420 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2421 sinfo->llid);
2422 if (sinfo->filled & STATION_INFO_PLID)
2423 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2424 sinfo->plid);
2425 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2426 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2427 sinfo->plink_state);
2428 if (sinfo->filled & STATION_INFO_SIGNAL)
2429 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2430 sinfo->signal);
2431 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2432 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2433 sinfo->signal_avg);
2434 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2435 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2436 NL80211_STA_INFO_TX_BITRATE))
2437 goto nla_put_failure;
2438 }
2439 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2440 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2441 NL80211_STA_INFO_RX_BITRATE))
2442 goto nla_put_failure;
2443 }
2444 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2445 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2446 sinfo->rx_packets);
2447 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2448 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2449 sinfo->tx_packets);
2450 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2451 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2452 sinfo->tx_retries);
2453 if (sinfo->filled & STATION_INFO_TX_FAILED)
2454 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2455 sinfo->tx_failed);
2456 if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
2457 NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
2458 sinfo->beacon_loss_count);
2459 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2460 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2461 if (!bss_param)
2462 goto nla_put_failure;
2463
2464 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2465 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2466 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2467 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2468 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2469 NLA_PUT_FLAG(msg,
2470 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2471 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2472 sinfo->bss_param.dtim_period);
2473 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2474 sinfo->bss_param.beacon_interval);
2475
2476 nla_nest_end(msg, bss_param);
2477 }
2478 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2479 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2480 sizeof(struct nl80211_sta_flag_update),
2481 &sinfo->sta_flags);
2482 nla_nest_end(msg, sinfoattr);
2483
2484 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2485 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2486 sinfo->assoc_req_ies);
2487
2488 return genlmsg_end(msg, hdr);
2489
2490 nla_put_failure:
2491 genlmsg_cancel(msg, hdr);
2492 return -EMSGSIZE;
2493 }
2494
2495 static int nl80211_dump_station(struct sk_buff *skb,
2496 struct netlink_callback *cb)
2497 {
2498 struct station_info sinfo;
2499 struct cfg80211_registered_device *dev;
2500 struct net_device *netdev;
2501 u8 mac_addr[ETH_ALEN];
2502 int sta_idx = cb->args[1];
2503 int err;
2504
2505 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2506 if (err)
2507 return err;
2508
2509 if (!dev->ops->dump_station) {
2510 err = -EOPNOTSUPP;
2511 goto out_err;
2512 }
2513
2514 while (1) {
2515 memset(&sinfo, 0, sizeof(sinfo));
2516 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2517 mac_addr, &sinfo);
2518 if (err == -ENOENT)
2519 break;
2520 if (err)
2521 goto out_err;
2522
2523 if (nl80211_send_station(skb,
2524 NETLINK_CB(cb->skb).pid,
2525 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2526 netdev, mac_addr,
2527 &sinfo) < 0)
2528 goto out;
2529
2530 sta_idx++;
2531 }
2532
2533
2534 out:
2535 cb->args[1] = sta_idx;
2536 err = skb->len;
2537 out_err:
2538 nl80211_finish_netdev_dump(dev);
2539
2540 return err;
2541 }
2542
2543 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2544 {
2545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2546 struct net_device *dev = info->user_ptr[1];
2547 struct station_info sinfo;
2548 struct sk_buff *msg;
2549 u8 *mac_addr = NULL;
2550 int err;
2551
2552 memset(&sinfo, 0, sizeof(sinfo));
2553
2554 if (!info->attrs[NL80211_ATTR_MAC])
2555 return -EINVAL;
2556
2557 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2558
2559 if (!rdev->ops->get_station)
2560 return -EOPNOTSUPP;
2561
2562 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2563 if (err)
2564 return err;
2565
2566 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2567 if (!msg)
2568 return -ENOMEM;
2569
2570 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2571 dev, mac_addr, &sinfo) < 0) {
2572 nlmsg_free(msg);
2573 return -ENOBUFS;
2574 }
2575
2576 return genlmsg_reply(msg, info);
2577 }
2578
2579 /*
2580 * Get vlan interface making sure it is running and on the right wiphy.
2581 */
2582 static struct net_device *get_vlan(struct genl_info *info,
2583 struct cfg80211_registered_device *rdev)
2584 {
2585 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2586 struct net_device *v;
2587 int ret;
2588
2589 if (!vlanattr)
2590 return NULL;
2591
2592 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2593 if (!v)
2594 return ERR_PTR(-ENODEV);
2595
2596 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2597 ret = -EINVAL;
2598 goto error;
2599 }
2600
2601 if (!netif_running(v)) {
2602 ret = -ENETDOWN;
2603 goto error;
2604 }
2605
2606 return v;
2607 error:
2608 dev_put(v);
2609 return ERR_PTR(ret);
2610 }
2611
2612 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2613 {
2614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2615 int err;
2616 struct net_device *dev = info->user_ptr[1];
2617 struct station_parameters params;
2618 u8 *mac_addr = NULL;
2619
2620 memset(&params, 0, sizeof(params));
2621
2622 params.listen_interval = -1;
2623 params.plink_state = -1;
2624
2625 if (info->attrs[NL80211_ATTR_STA_AID])
2626 return -EINVAL;
2627
2628 if (!info->attrs[NL80211_ATTR_MAC])
2629 return -EINVAL;
2630
2631 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2632
2633 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2634 params.supported_rates =
2635 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2636 params.supported_rates_len =
2637 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2638 }
2639
2640 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2641 params.listen_interval =
2642 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2643
2644 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2645 params.ht_capa =
2646 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2647
2648 if (!rdev->ops->change_station)
2649 return -EOPNOTSUPP;
2650
2651 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2652 return -EINVAL;
2653
2654 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2655 params.plink_action =
2656 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2657
2658 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2659 params.plink_state =
2660 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2661
2662 switch (dev->ieee80211_ptr->iftype) {
2663 case NL80211_IFTYPE_AP:
2664 case NL80211_IFTYPE_AP_VLAN:
2665 case NL80211_IFTYPE_P2P_GO:
2666 /* disallow mesh-specific things */
2667 if (params.plink_action)
2668 return -EINVAL;
2669
2670 /* TDLS can't be set, ... */
2671 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2672 return -EINVAL;
2673 /*
2674 * ... but don't bother the driver with it. This works around
2675 * a hostapd/wpa_supplicant issue -- it always includes the
2676 * TLDS_PEER flag in the mask even for AP mode.
2677 */
2678 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2679
2680 /* accept only the listed bits */
2681 if (params.sta_flags_mask &
2682 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2683 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2684 BIT(NL80211_STA_FLAG_WME) |
2685 BIT(NL80211_STA_FLAG_MFP)))
2686 return -EINVAL;
2687
2688 /* must be last in here for error handling */
2689 params.vlan = get_vlan(info, rdev);
2690 if (IS_ERR(params.vlan))
2691 return PTR_ERR(params.vlan);
2692 break;
2693 case NL80211_IFTYPE_P2P_CLIENT:
2694 case NL80211_IFTYPE_STATION:
2695 /*
2696 * Don't allow userspace to change the TDLS_PEER flag,
2697 * but silently ignore attempts to change it since we
2698 * don't have state here to verify that it doesn't try
2699 * to change the flag.
2700 */
2701 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2702 /* fall through */
2703 case NL80211_IFTYPE_ADHOC:
2704 /* disallow things sta doesn't support */
2705 if (params.plink_action)
2706 return -EINVAL;
2707 if (params.ht_capa)
2708 return -EINVAL;
2709 if (params.listen_interval >= 0)
2710 return -EINVAL;
2711 /* reject any changes other than AUTHORIZED */
2712 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2713 return -EINVAL;
2714 break;
2715 case NL80211_IFTYPE_MESH_POINT:
2716 /* disallow things mesh doesn't support */
2717 if (params.vlan)
2718 return -EINVAL;
2719 if (params.ht_capa)
2720 return -EINVAL;
2721 if (params.listen_interval >= 0)
2722 return -EINVAL;
2723 /*
2724 * No special handling for TDLS here -- the userspace
2725 * mesh code doesn't have this bug.
2726 */
2727 if (params.sta_flags_mask &
2728 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2729 BIT(NL80211_STA_FLAG_MFP) |
2730 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2731 return -EINVAL;
2732 break;
2733 default:
2734 return -EOPNOTSUPP;
2735 }
2736
2737 /* be aware of params.vlan when changing code here */
2738
2739 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2740
2741 if (params.vlan)
2742 dev_put(params.vlan);
2743
2744 return err;
2745 }
2746
2747 static struct nla_policy
2748 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2749 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2750 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2751 };
2752
2753 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2754 {
2755 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2756 int err;
2757 struct net_device *dev = info->user_ptr[1];
2758 struct station_parameters params;
2759 u8 *mac_addr = NULL;
2760
2761 memset(&params, 0, sizeof(params));
2762
2763 if (!info->attrs[NL80211_ATTR_MAC])
2764 return -EINVAL;
2765
2766 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2767 return -EINVAL;
2768
2769 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2770 return -EINVAL;
2771
2772 if (!info->attrs[NL80211_ATTR_STA_AID])
2773 return -EINVAL;
2774
2775 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2776 params.supported_rates =
2777 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2778 params.supported_rates_len =
2779 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2780 params.listen_interval =
2781 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2782
2783 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2784 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2785 return -EINVAL;
2786
2787 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2788 params.ht_capa =
2789 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2790
2791 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2792 params.plink_action =
2793 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2794
2795 if (!rdev->ops->add_station)
2796 return -EOPNOTSUPP;
2797
2798 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2799 return -EINVAL;
2800
2801 switch (dev->ieee80211_ptr->iftype) {
2802 case NL80211_IFTYPE_AP:
2803 case NL80211_IFTYPE_AP_VLAN:
2804 case NL80211_IFTYPE_P2P_GO:
2805 /* parse WME attributes if sta is WME capable */
2806 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2807 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2808 info->attrs[NL80211_ATTR_STA_WME]) {
2809 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2810 struct nlattr *nla;
2811
2812 nla = info->attrs[NL80211_ATTR_STA_WME];
2813 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2814 nl80211_sta_wme_policy);
2815 if (err)
2816 return err;
2817
2818 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2819 params.uapsd_queues =
2820 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2821 if (params.uapsd_queues &
2822 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2823 return -EINVAL;
2824
2825 if (tb[NL80211_STA_WME_MAX_SP])
2826 params.max_sp =
2827 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2828
2829 if (params.max_sp &
2830 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2831 return -EINVAL;
2832
2833 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2834 }
2835 /* TDLS peers cannot be added */
2836 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2837 return -EINVAL;
2838 /* but don't bother the driver with it */
2839 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2840
2841 /* must be last in here for error handling */
2842 params.vlan = get_vlan(info, rdev);
2843 if (IS_ERR(params.vlan))
2844 return PTR_ERR(params.vlan);
2845 break;
2846 case NL80211_IFTYPE_MESH_POINT:
2847 /* TDLS peers cannot be added */
2848 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2849 return -EINVAL;
2850 break;
2851 case NL80211_IFTYPE_STATION:
2852 /* Only TDLS peers can be added */
2853 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2854 return -EINVAL;
2855 /* Can only add if TDLS ... */
2856 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
2857 return -EOPNOTSUPP;
2858 /* ... with external setup is supported */
2859 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
2860 return -EOPNOTSUPP;
2861 break;
2862 default:
2863 return -EOPNOTSUPP;
2864 }
2865
2866 /* be aware of params.vlan when changing code here */
2867
2868 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2869
2870 if (params.vlan)
2871 dev_put(params.vlan);
2872 return err;
2873 }
2874
2875 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2876 {
2877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2878 struct net_device *dev = info->user_ptr[1];
2879 u8 *mac_addr = NULL;
2880
2881 if (info->attrs[NL80211_ATTR_MAC])
2882 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2883
2884 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2885 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2886 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2887 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2888 return -EINVAL;
2889
2890 if (!rdev->ops->del_station)
2891 return -EOPNOTSUPP;
2892
2893 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2894 }
2895
2896 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2897 int flags, struct net_device *dev,
2898 u8 *dst, u8 *next_hop,
2899 struct mpath_info *pinfo)
2900 {
2901 void *hdr;
2902 struct nlattr *pinfoattr;
2903
2904 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2905 if (!hdr)
2906 return -1;
2907
2908 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2909 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2910 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2911
2912 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2913
2914 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2915 if (!pinfoattr)
2916 goto nla_put_failure;
2917 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2918 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2919 pinfo->frame_qlen);
2920 if (pinfo->filled & MPATH_INFO_SN)
2921 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2922 pinfo->sn);
2923 if (pinfo->filled & MPATH_INFO_METRIC)
2924 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2925 pinfo->metric);
2926 if (pinfo->filled & MPATH_INFO_EXPTIME)
2927 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2928 pinfo->exptime);
2929 if (pinfo->filled & MPATH_INFO_FLAGS)
2930 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2931 pinfo->flags);
2932 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2933 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2934 pinfo->discovery_timeout);
2935 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2936 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2937 pinfo->discovery_retries);
2938
2939 nla_nest_end(msg, pinfoattr);
2940
2941 return genlmsg_end(msg, hdr);
2942
2943 nla_put_failure:
2944 genlmsg_cancel(msg, hdr);
2945 return -EMSGSIZE;
2946 }
2947
2948 static int nl80211_dump_mpath(struct sk_buff *skb,
2949 struct netlink_callback *cb)
2950 {
2951 struct mpath_info pinfo;
2952 struct cfg80211_registered_device *dev;
2953 struct net_device *netdev;
2954 u8 dst[ETH_ALEN];
2955 u8 next_hop[ETH_ALEN];
2956 int path_idx = cb->args[1];
2957 int err;
2958
2959 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2960 if (err)
2961 return err;
2962
2963 if (!dev->ops->dump_mpath) {
2964 err = -EOPNOTSUPP;
2965 goto out_err;
2966 }
2967
2968 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2969 err = -EOPNOTSUPP;
2970 goto out_err;
2971 }
2972
2973 while (1) {
2974 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2975 dst, next_hop, &pinfo);
2976 if (err == -ENOENT)
2977 break;
2978 if (err)
2979 goto out_err;
2980
2981 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2982 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2983 netdev, dst, next_hop,
2984 &pinfo) < 0)
2985 goto out;
2986
2987 path_idx++;
2988 }
2989
2990
2991 out:
2992 cb->args[1] = path_idx;
2993 err = skb->len;
2994 out_err:
2995 nl80211_finish_netdev_dump(dev);
2996 return err;
2997 }
2998
2999 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3000 {
3001 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3002 int err;
3003 struct net_device *dev = info->user_ptr[1];
3004 struct mpath_info pinfo;
3005 struct sk_buff *msg;
3006 u8 *dst = NULL;
3007 u8 next_hop[ETH_ALEN];
3008
3009 memset(&pinfo, 0, sizeof(pinfo));
3010
3011 if (!info->attrs[NL80211_ATTR_MAC])
3012 return -EINVAL;
3013
3014 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3015
3016 if (!rdev->ops->get_mpath)
3017 return -EOPNOTSUPP;
3018
3019 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3020 return -EOPNOTSUPP;
3021
3022 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3023 if (err)
3024 return err;
3025
3026 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3027 if (!msg)
3028 return -ENOMEM;
3029
3030 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3031 dev, dst, next_hop, &pinfo) < 0) {
3032 nlmsg_free(msg);
3033 return -ENOBUFS;
3034 }
3035
3036 return genlmsg_reply(msg, info);
3037 }
3038
3039 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3040 {
3041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3042 struct net_device *dev = info->user_ptr[1];
3043 u8 *dst = NULL;
3044 u8 *next_hop = NULL;
3045
3046 if (!info->attrs[NL80211_ATTR_MAC])
3047 return -EINVAL;
3048
3049 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3050 return -EINVAL;
3051
3052 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3053 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3054
3055 if (!rdev->ops->change_mpath)
3056 return -EOPNOTSUPP;
3057
3058 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3059 return -EOPNOTSUPP;
3060
3061 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3062 }
3063
3064 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3065 {
3066 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3067 struct net_device *dev = info->user_ptr[1];
3068 u8 *dst = NULL;
3069 u8 *next_hop = NULL;
3070
3071 if (!info->attrs[NL80211_ATTR_MAC])
3072 return -EINVAL;
3073
3074 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3075 return -EINVAL;
3076
3077 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3079
3080 if (!rdev->ops->add_mpath)
3081 return -EOPNOTSUPP;
3082
3083 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3084 return -EOPNOTSUPP;
3085
3086 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3087 }
3088
3089 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3090 {
3091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3092 struct net_device *dev = info->user_ptr[1];
3093 u8 *dst = NULL;
3094
3095 if (info->attrs[NL80211_ATTR_MAC])
3096 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3097
3098 if (!rdev->ops->del_mpath)
3099 return -EOPNOTSUPP;
3100
3101 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3102 }
3103
3104 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3105 {
3106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3107 struct net_device *dev = info->user_ptr[1];
3108 struct bss_parameters params;
3109
3110 memset(&params, 0, sizeof(params));
3111 /* default to not changing parameters */
3112 params.use_cts_prot = -1;
3113 params.use_short_preamble = -1;
3114 params.use_short_slot_time = -1;
3115 params.ap_isolate = -1;
3116 params.ht_opmode = -1;
3117
3118 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3119 params.use_cts_prot =
3120 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3121 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3122 params.use_short_preamble =
3123 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3124 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3125 params.use_short_slot_time =
3126 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3127 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3128 params.basic_rates =
3129 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3130 params.basic_rates_len =
3131 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3132 }
3133 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3134 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3135 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3136 params.ht_opmode =
3137 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3138
3139 if (!rdev->ops->change_bss)
3140 return -EOPNOTSUPP;
3141
3142 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3143 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3144 return -EOPNOTSUPP;
3145
3146 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3147 }
3148
3149 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3150 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3151 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3152 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3153 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3154 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3155 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3156 };
3157
3158 static int parse_reg_rule(struct nlattr *tb[],
3159 struct ieee80211_reg_rule *reg_rule)
3160 {
3161 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3162 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3163
3164 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3165 return -EINVAL;
3166 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3167 return -EINVAL;
3168 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3169 return -EINVAL;
3170 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3171 return -EINVAL;
3172 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3173 return -EINVAL;
3174
3175 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3176
3177 freq_range->start_freq_khz =
3178 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3179 freq_range->end_freq_khz =
3180 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3181 freq_range->max_bandwidth_khz =
3182 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3183
3184 power_rule->max_eirp =
3185 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3186
3187 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3188 power_rule->max_antenna_gain =
3189 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3190
3191 return 0;
3192 }
3193
3194 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3195 {
3196 int r;
3197 char *data = NULL;
3198
3199 /*
3200 * You should only get this when cfg80211 hasn't yet initialized
3201 * completely when built-in to the kernel right between the time
3202 * window between nl80211_init() and regulatory_init(), if that is
3203 * even possible.
3204 */
3205 mutex_lock(&cfg80211_mutex);
3206 if (unlikely(!cfg80211_regdomain)) {
3207 mutex_unlock(&cfg80211_mutex);
3208 return -EINPROGRESS;
3209 }
3210 mutex_unlock(&cfg80211_mutex);
3211
3212 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3213 return -EINVAL;
3214
3215 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3216
3217 r = regulatory_hint_user(data);
3218
3219 return r;
3220 }
3221
3222 static int nl80211_get_mesh_config(struct sk_buff *skb,
3223 struct genl_info *info)
3224 {
3225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3226 struct net_device *dev = info->user_ptr[1];
3227 struct wireless_dev *wdev = dev->ieee80211_ptr;
3228 struct mesh_config cur_params;
3229 int err = 0;
3230 void *hdr;
3231 struct nlattr *pinfoattr;
3232 struct sk_buff *msg;
3233
3234 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3235 return -EOPNOTSUPP;
3236
3237 if (!rdev->ops->get_mesh_config)
3238 return -EOPNOTSUPP;
3239
3240 wdev_lock(wdev);
3241 /* If not connected, get default parameters */
3242 if (!wdev->mesh_id_len)
3243 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3244 else
3245 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3246 &cur_params);
3247 wdev_unlock(wdev);
3248
3249 if (err)
3250 return err;
3251
3252 /* Draw up a netlink message to send back */
3253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3254 if (!msg)
3255 return -ENOMEM;
3256 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3257 NL80211_CMD_GET_MESH_CONFIG);
3258 if (!hdr)
3259 goto out;
3260 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3261 if (!pinfoattr)
3262 goto nla_put_failure;
3263 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3264 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3265 cur_params.dot11MeshRetryTimeout);
3266 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3267 cur_params.dot11MeshConfirmTimeout);
3268 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3269 cur_params.dot11MeshHoldingTimeout);
3270 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3271 cur_params.dot11MeshMaxPeerLinks);
3272 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3273 cur_params.dot11MeshMaxRetries);
3274 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3275 cur_params.dot11MeshTTL);
3276 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3277 cur_params.element_ttl);
3278 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3279 cur_params.auto_open_plinks);
3280 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3281 cur_params.dot11MeshHWMPmaxPREQretries);
3282 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3283 cur_params.path_refresh_time);
3284 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3285 cur_params.min_discovery_timeout);
3286 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3287 cur_params.dot11MeshHWMPactivePathTimeout);
3288 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3289 cur_params.dot11MeshHWMPpreqMinInterval);
3290 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3291 cur_params.dot11MeshHWMPperrMinInterval);
3292 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3293 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3294 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3295 cur_params.dot11MeshHWMPRootMode);
3296 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3297 cur_params.dot11MeshHWMPRannInterval);
3298 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3299 cur_params.dot11MeshGateAnnouncementProtocol);
3300 NLA_PUT_U8(msg, NL80211_MESHCONF_FORWARDING,
3301 cur_params.dot11MeshForwarding);
3302 NLA_PUT_U32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3303 cur_params.rssi_threshold);
3304 nla_nest_end(msg, pinfoattr);
3305 genlmsg_end(msg, hdr);
3306 return genlmsg_reply(msg, info);
3307
3308 nla_put_failure:
3309 genlmsg_cancel(msg, hdr);
3310 out:
3311 nlmsg_free(msg);
3312 return -ENOBUFS;
3313 }
3314
3315 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3316 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3317 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3318 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3319 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3320 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3321 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3322 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3323 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3324
3325 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3326 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3327 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3328 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3329 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3330 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3331 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3332 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3333 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3334 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3335 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3336 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32},
3337 };
3338
3339 static const struct nla_policy
3340 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3341 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3342 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3343 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3344 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3345 .len = IEEE80211_MAX_DATA_LEN },
3346 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3347 };
3348
3349 static int nl80211_parse_mesh_config(struct genl_info *info,
3350 struct mesh_config *cfg,
3351 u32 *mask_out)
3352 {
3353 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3354 u32 mask = 0;
3355
3356 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3357 do {\
3358 if (table[attr_num]) {\
3359 cfg->param = nla_fn(table[attr_num]); \
3360 mask |= (1 << (attr_num - 1)); \
3361 } \
3362 } while (0);\
3363
3364
3365 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3366 return -EINVAL;
3367 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3368 info->attrs[NL80211_ATTR_MESH_CONFIG],
3369 nl80211_meshconf_params_policy))
3370 return -EINVAL;
3371
3372 /* This makes sure that there aren't more than 32 mesh config
3373 * parameters (otherwise our bitfield scheme would not work.) */
3374 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3375
3376 /* Fill in the params struct */
3377 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3378 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3379 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3380 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3381 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3382 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3383 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3384 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3385 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3386 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3387 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3388 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3389 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3390 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3391 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3392 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3393 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3394 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3395 nla_get_u8);
3396 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3397 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3398 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3399 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3400 nla_get_u16);
3401 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3402 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3403 nla_get_u32);
3404 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3405 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3406 nla_get_u16);
3407 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3408 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3409 nla_get_u16);
3410 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3411 dot11MeshHWMPnetDiameterTraversalTime,
3412 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3413 nla_get_u16);
3414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3415 dot11MeshHWMPRootMode, mask,
3416 NL80211_MESHCONF_HWMP_ROOTMODE,
3417 nla_get_u8);
3418 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3419 dot11MeshHWMPRannInterval, mask,
3420 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3421 nla_get_u16);
3422 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3423 dot11MeshGateAnnouncementProtocol, mask,
3424 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3425 nla_get_u8);
3426 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3427 mask, NL80211_MESHCONF_FORWARDING, nla_get_u8);
3428 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3429 mask, NL80211_MESHCONF_RSSI_THRESHOLD, nla_get_u32);
3430 if (mask_out)
3431 *mask_out = mask;
3432
3433 return 0;
3434
3435 #undef FILL_IN_MESH_PARAM_IF_SET
3436 }
3437
3438 static int nl80211_parse_mesh_setup(struct genl_info *info,
3439 struct mesh_setup *setup)
3440 {
3441 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3442
3443 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3444 return -EINVAL;
3445 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3446 info->attrs[NL80211_ATTR_MESH_SETUP],
3447 nl80211_mesh_setup_params_policy))
3448 return -EINVAL;
3449
3450 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3451 setup->path_sel_proto =
3452 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3453 IEEE80211_PATH_PROTOCOL_VENDOR :
3454 IEEE80211_PATH_PROTOCOL_HWMP;
3455
3456 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3457 setup->path_metric =
3458 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3459 IEEE80211_PATH_METRIC_VENDOR :
3460 IEEE80211_PATH_METRIC_AIRTIME;
3461
3462
3463 if (tb[NL80211_MESH_SETUP_IE]) {
3464 struct nlattr *ieattr =
3465 tb[NL80211_MESH_SETUP_IE];
3466 if (!is_valid_ie_attr(ieattr))
3467 return -EINVAL;
3468 setup->ie = nla_data(ieattr);
3469 setup->ie_len = nla_len(ieattr);
3470 }
3471 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3472 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3473
3474 return 0;
3475 }
3476
3477 static int nl80211_update_mesh_config(struct sk_buff *skb,
3478 struct genl_info *info)
3479 {
3480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3481 struct net_device *dev = info->user_ptr[1];
3482 struct wireless_dev *wdev = dev->ieee80211_ptr;
3483 struct mesh_config cfg;
3484 u32 mask;
3485 int err;
3486
3487 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3488 return -EOPNOTSUPP;
3489
3490 if (!rdev->ops->update_mesh_config)
3491 return -EOPNOTSUPP;
3492
3493 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3494 if (err)
3495 return err;
3496
3497 wdev_lock(wdev);
3498 if (!wdev->mesh_id_len)
3499 err = -ENOLINK;
3500
3501 if (!err)
3502 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3503 mask, &cfg);
3504
3505 wdev_unlock(wdev);
3506
3507 return err;
3508 }
3509
3510 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3511 {
3512 struct sk_buff *msg;
3513 void *hdr = NULL;
3514 struct nlattr *nl_reg_rules;
3515 unsigned int i;
3516 int err = -EINVAL;
3517
3518 mutex_lock(&cfg80211_mutex);
3519
3520 if (!cfg80211_regdomain)
3521 goto out;
3522
3523 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3524 if (!msg) {
3525 err = -ENOBUFS;
3526 goto out;
3527 }
3528
3529 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3530 NL80211_CMD_GET_REG);
3531 if (!hdr)
3532 goto put_failure;
3533
3534 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3535 cfg80211_regdomain->alpha2);
3536 if (cfg80211_regdomain->dfs_region)
3537 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3538 cfg80211_regdomain->dfs_region);
3539
3540 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3541 if (!nl_reg_rules)
3542 goto nla_put_failure;
3543
3544 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3545 struct nlattr *nl_reg_rule;
3546 const struct ieee80211_reg_rule *reg_rule;
3547 const struct ieee80211_freq_range *freq_range;
3548 const struct ieee80211_power_rule *power_rule;
3549
3550 reg_rule = &cfg80211_regdomain->reg_rules[i];
3551 freq_range = &reg_rule->freq_range;
3552 power_rule = &reg_rule->power_rule;
3553
3554 nl_reg_rule = nla_nest_start(msg, i);
3555 if (!nl_reg_rule)
3556 goto nla_put_failure;
3557
3558 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3559 reg_rule->flags);
3560 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3561 freq_range->start_freq_khz);
3562 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3563 freq_range->end_freq_khz);
3564 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3565 freq_range->max_bandwidth_khz);
3566 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3567 power_rule->max_antenna_gain);
3568 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3569 power_rule->max_eirp);
3570
3571 nla_nest_end(msg, nl_reg_rule);
3572 }
3573
3574 nla_nest_end(msg, nl_reg_rules);
3575
3576 genlmsg_end(msg, hdr);
3577 err = genlmsg_reply(msg, info);
3578 goto out;
3579
3580 nla_put_failure:
3581 genlmsg_cancel(msg, hdr);
3582 put_failure:
3583 nlmsg_free(msg);
3584 err = -EMSGSIZE;
3585 out:
3586 mutex_unlock(&cfg80211_mutex);
3587 return err;
3588 }
3589
3590 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3591 {
3592 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3593 struct nlattr *nl_reg_rule;
3594 char *alpha2 = NULL;
3595 int rem_reg_rules = 0, r = 0;
3596 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3597 u8 dfs_region = 0;
3598 struct ieee80211_regdomain *rd = NULL;
3599
3600 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3601 return -EINVAL;
3602
3603 if (!info->attrs[NL80211_ATTR_REG_RULES])
3604 return -EINVAL;
3605
3606 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3607
3608 if (info->attrs[NL80211_ATTR_DFS_REGION])
3609 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3610
3611 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3612 rem_reg_rules) {
3613 num_rules++;
3614 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3615 return -EINVAL;
3616 }
3617
3618 mutex_lock(&cfg80211_mutex);
3619
3620 if (!reg_is_valid_request(alpha2)) {
3621 r = -EINVAL;
3622 goto bad_reg;
3623 }
3624
3625 size_of_regd = sizeof(struct ieee80211_regdomain) +
3626 (num_rules * sizeof(struct ieee80211_reg_rule));
3627
3628 rd = kzalloc(size_of_regd, GFP_KERNEL);
3629 if (!rd) {
3630 r = -ENOMEM;
3631 goto bad_reg;
3632 }
3633
3634 rd->n_reg_rules = num_rules;
3635 rd->alpha2[0] = alpha2[0];
3636 rd->alpha2[1] = alpha2[1];
3637
3638 /*
3639 * Disable DFS master mode if the DFS region was
3640 * not supported or known on this kernel.
3641 */
3642 if (reg_supported_dfs_region(dfs_region))
3643 rd->dfs_region = dfs_region;
3644
3645 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3646 rem_reg_rules) {
3647 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3648 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3649 reg_rule_policy);
3650 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3651 if (r)
3652 goto bad_reg;
3653
3654 rule_idx++;
3655
3656 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3657 r = -EINVAL;
3658 goto bad_reg;
3659 }
3660 }
3661
3662 BUG_ON(rule_idx != num_rules);
3663
3664 r = set_regdom(rd);
3665
3666 mutex_unlock(&cfg80211_mutex);
3667
3668 return r;
3669
3670 bad_reg:
3671 mutex_unlock(&cfg80211_mutex);
3672 kfree(rd);
3673 return r;
3674 }
3675
3676 static int validate_scan_freqs(struct nlattr *freqs)
3677 {
3678 struct nlattr *attr1, *attr2;
3679 int n_channels = 0, tmp1, tmp2;
3680
3681 nla_for_each_nested(attr1, freqs, tmp1) {
3682 n_channels++;
3683 /*
3684 * Some hardware has a limited channel list for
3685 * scanning, and it is pretty much nonsensical
3686 * to scan for a channel twice, so disallow that
3687 * and don't require drivers to check that the
3688 * channel list they get isn't longer than what
3689 * they can scan, as long as they can scan all
3690 * the channels they registered at once.
3691 */
3692 nla_for_each_nested(attr2, freqs, tmp2)
3693 if (attr1 != attr2 &&
3694 nla_get_u32(attr1) == nla_get_u32(attr2))
3695 return 0;
3696 }
3697
3698 return n_channels;
3699 }
3700
3701 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3702 {
3703 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3704 struct net_device *dev = info->user_ptr[1];
3705 struct cfg80211_scan_request *request;
3706 struct nlattr *attr;
3707 struct wiphy *wiphy;
3708 int err, tmp, n_ssids = 0, n_channels, i;
3709 size_t ie_len;
3710
3711 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3712 return -EINVAL;
3713
3714 wiphy = &rdev->wiphy;
3715
3716 if (!rdev->ops->scan)
3717 return -EOPNOTSUPP;
3718
3719 if (rdev->scan_req)
3720 return -EBUSY;
3721
3722 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3723 n_channels = validate_scan_freqs(
3724 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3725 if (!n_channels)
3726 return -EINVAL;
3727 } else {
3728 enum ieee80211_band band;
3729 n_channels = 0;
3730
3731 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3732 if (wiphy->bands[band])
3733 n_channels += wiphy->bands[band]->n_channels;
3734 }
3735
3736 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3737 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3738 n_ssids++;
3739
3740 if (n_ssids > wiphy->max_scan_ssids)
3741 return -EINVAL;
3742
3743 if (info->attrs[NL80211_ATTR_IE])
3744 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3745 else
3746 ie_len = 0;
3747
3748 if (ie_len > wiphy->max_scan_ie_len)
3749 return -EINVAL;
3750
3751 request = kzalloc(sizeof(*request)
3752 + sizeof(*request->ssids) * n_ssids
3753 + sizeof(*request->channels) * n_channels
3754 + ie_len, GFP_KERNEL);
3755 if (!request)
3756 return -ENOMEM;
3757
3758 if (n_ssids)
3759 request->ssids = (void *)&request->channels[n_channels];
3760 request->n_ssids = n_ssids;
3761 if (ie_len) {
3762 if (request->ssids)
3763 request->ie = (void *)(request->ssids + n_ssids);
3764 else
3765 request->ie = (void *)(request->channels + n_channels);
3766 }
3767
3768 i = 0;
3769 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3770 /* user specified, bail out if channel not found */
3771 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3772 struct ieee80211_channel *chan;
3773
3774 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3775
3776 if (!chan) {
3777 err = -EINVAL;
3778 goto out_free;
3779 }
3780
3781 /* ignore disabled channels */
3782 if (chan->flags & IEEE80211_CHAN_DISABLED)
3783 continue;
3784
3785 request->channels[i] = chan;
3786 i++;
3787 }
3788 } else {
3789 enum ieee80211_band band;
3790
3791 /* all channels */
3792 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3793 int j;
3794 if (!wiphy->bands[band])
3795 continue;
3796 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3797 struct ieee80211_channel *chan;
3798
3799 chan = &wiphy->bands[band]->channels[j];
3800
3801 if (chan->flags & IEEE80211_CHAN_DISABLED)
3802 continue;
3803
3804 request->channels[i] = chan;
3805 i++;
3806 }
3807 }
3808 }
3809
3810 if (!i) {
3811 err = -EINVAL;
3812 goto out_free;
3813 }
3814
3815 request->n_channels = i;
3816
3817 i = 0;
3818 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3819 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3820 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3821 err = -EINVAL;
3822 goto out_free;
3823 }
3824 request->ssids[i].ssid_len = nla_len(attr);
3825 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3826 i++;
3827 }
3828 }
3829
3830 if (info->attrs[NL80211_ATTR_IE]) {
3831 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3832 memcpy((void *)request->ie,
3833 nla_data(info->attrs[NL80211_ATTR_IE]),
3834 request->ie_len);
3835 }
3836
3837 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3838 if (wiphy->bands[i])
3839 request->rates[i] =
3840 (1 << wiphy->bands[i]->n_bitrates) - 1;
3841
3842 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3843 nla_for_each_nested(attr,
3844 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3845 tmp) {
3846 enum ieee80211_band band = nla_type(attr);
3847
3848 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3849 err = -EINVAL;
3850 goto out_free;
3851 }
3852 err = ieee80211_get_ratemask(wiphy->bands[band],
3853 nla_data(attr),
3854 nla_len(attr),
3855 &request->rates[band]);
3856 if (err)
3857 goto out_free;
3858 }
3859 }
3860
3861 request->no_cck =
3862 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3863
3864 request->dev = dev;
3865 request->wiphy = &rdev->wiphy;
3866
3867 rdev->scan_req = request;
3868 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3869
3870 if (!err) {
3871 nl80211_send_scan_start(rdev, dev);
3872 dev_hold(dev);
3873 } else {
3874 out_free:
3875 rdev->scan_req = NULL;
3876 kfree(request);
3877 }
3878
3879 return err;
3880 }
3881
3882 static int nl80211_start_sched_scan(struct sk_buff *skb,
3883 struct genl_info *info)
3884 {
3885 struct cfg80211_sched_scan_request *request;
3886 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3887 struct net_device *dev = info->user_ptr[1];
3888 struct nlattr *attr;
3889 struct wiphy *wiphy;
3890 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3891 u32 interval;
3892 enum ieee80211_band band;
3893 size_t ie_len;
3894 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3895
3896 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3897 !rdev->ops->sched_scan_start)
3898 return -EOPNOTSUPP;
3899
3900 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3901 return -EINVAL;
3902
3903 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3904 return -EINVAL;
3905
3906 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3907 if (interval == 0)
3908 return -EINVAL;
3909
3910 wiphy = &rdev->wiphy;
3911
3912 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3913 n_channels = validate_scan_freqs(
3914 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3915 if (!n_channels)
3916 return -EINVAL;
3917 } else {
3918 n_channels = 0;
3919
3920 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3921 if (wiphy->bands[band])
3922 n_channels += wiphy->bands[band]->n_channels;
3923 }
3924
3925 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3926 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3927 tmp)
3928 n_ssids++;
3929
3930 if (n_ssids > wiphy->max_sched_scan_ssids)
3931 return -EINVAL;
3932
3933 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3934 nla_for_each_nested(attr,
3935 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3936 tmp)
3937 n_match_sets++;
3938
3939 if (n_match_sets > wiphy->max_match_sets)
3940 return -EINVAL;
3941
3942 if (info->attrs[NL80211_ATTR_IE])
3943 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3944 else
3945 ie_len = 0;
3946
3947 if (ie_len > wiphy->max_sched_scan_ie_len)
3948 return -EINVAL;
3949
3950 mutex_lock(&rdev->sched_scan_mtx);
3951
3952 if (rdev->sched_scan_req) {
3953 err = -EINPROGRESS;
3954 goto out;
3955 }
3956
3957 request = kzalloc(sizeof(*request)
3958 + sizeof(*request->ssids) * n_ssids
3959 + sizeof(*request->match_sets) * n_match_sets
3960 + sizeof(*request->channels) * n_channels
3961 + ie_len, GFP_KERNEL);
3962 if (!request) {
3963 err = -ENOMEM;
3964 goto out;
3965 }
3966
3967 if (n_ssids)
3968 request->ssids = (void *)&request->channels[n_channels];
3969 request->n_ssids = n_ssids;
3970 if (ie_len) {
3971 if (request->ssids)
3972 request->ie = (void *)(request->ssids + n_ssids);
3973 else
3974 request->ie = (void *)(request->channels + n_channels);
3975 }
3976
3977 if (n_match_sets) {
3978 if (request->ie)
3979 request->match_sets = (void *)(request->ie + ie_len);
3980 else if (request->ssids)
3981 request->match_sets =
3982 (void *)(request->ssids + n_ssids);
3983 else
3984 request->match_sets =
3985 (void *)(request->channels + n_channels);
3986 }
3987 request->n_match_sets = n_match_sets;
3988
3989 i = 0;
3990 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3991 /* user specified, bail out if channel not found */
3992 nla_for_each_nested(attr,
3993 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3994 tmp) {
3995 struct ieee80211_channel *chan;
3996
3997 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3998
3999 if (!chan) {
4000 err = -EINVAL;
4001 goto out_free;
4002 }
4003
4004 /* ignore disabled channels */
4005 if (chan->flags & IEEE80211_CHAN_DISABLED)
4006 continue;
4007
4008 request->channels[i] = chan;
4009 i++;
4010 }
4011 } else {
4012 /* all channels */
4013 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4014 int j;
4015 if (!wiphy->bands[band])
4016 continue;
4017 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4018 struct ieee80211_channel *chan;
4019
4020 chan = &wiphy->bands[band]->channels[j];
4021
4022 if (chan->flags & IEEE80211_CHAN_DISABLED)
4023 continue;
4024
4025 request->channels[i] = chan;
4026 i++;
4027 }
4028 }
4029 }
4030
4031 if (!i) {
4032 err = -EINVAL;
4033 goto out_free;
4034 }
4035
4036 request->n_channels = i;
4037
4038 i = 0;
4039 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4040 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4041 tmp) {
4042 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4043 err = -EINVAL;
4044 goto out_free;
4045 }
4046 request->ssids[i].ssid_len = nla_len(attr);
4047 memcpy(request->ssids[i].ssid, nla_data(attr),
4048 nla_len(attr));
4049 i++;
4050 }
4051 }
4052
4053 i = 0;
4054 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4055 nla_for_each_nested(attr,
4056 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4057 tmp) {
4058 struct nlattr *ssid;
4059
4060 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4061 nla_data(attr), nla_len(attr),
4062 nl80211_match_policy);
4063 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
4064 if (ssid) {
4065 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4066 err = -EINVAL;
4067 goto out_free;
4068 }
4069 memcpy(request->match_sets[i].ssid.ssid,
4070 nla_data(ssid), nla_len(ssid));
4071 request->match_sets[i].ssid.ssid_len =
4072 nla_len(ssid);
4073 }
4074 i++;
4075 }
4076 }
4077
4078 if (info->attrs[NL80211_ATTR_IE]) {
4079 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4080 memcpy((void *)request->ie,
4081 nla_data(info->attrs[NL80211_ATTR_IE]),
4082 request->ie_len);
4083 }
4084
4085 request->dev = dev;
4086 request->wiphy = &rdev->wiphy;
4087 request->interval = interval;
4088
4089 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4090 if (!err) {
4091 rdev->sched_scan_req = request;
4092 nl80211_send_sched_scan(rdev, dev,
4093 NL80211_CMD_START_SCHED_SCAN);
4094 goto out;
4095 }
4096
4097 out_free:
4098 kfree(request);
4099 out:
4100 mutex_unlock(&rdev->sched_scan_mtx);
4101 return err;
4102 }
4103
4104 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4105 struct genl_info *info)
4106 {
4107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4108 int err;
4109
4110 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4111 !rdev->ops->sched_scan_stop)
4112 return -EOPNOTSUPP;
4113
4114 mutex_lock(&rdev->sched_scan_mtx);
4115 err = __cfg80211_stop_sched_scan(rdev, false);
4116 mutex_unlock(&rdev->sched_scan_mtx);
4117
4118 return err;
4119 }
4120
4121 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4122 u32 seq, int flags,
4123 struct cfg80211_registered_device *rdev,
4124 struct wireless_dev *wdev,
4125 struct cfg80211_internal_bss *intbss)
4126 {
4127 struct cfg80211_bss *res = &intbss->pub;
4128 void *hdr;
4129 struct nlattr *bss;
4130
4131 ASSERT_WDEV_LOCK(wdev);
4132
4133 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4134 NL80211_CMD_NEW_SCAN_RESULTS);
4135 if (!hdr)
4136 return -1;
4137
4138 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4139
4140 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4141 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4142
4143 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4144 if (!bss)
4145 goto nla_put_failure;
4146 if (!is_zero_ether_addr(res->bssid))
4147 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4148 if (res->information_elements && res->len_information_elements)
4149 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4150 res->len_information_elements,
4151 res->information_elements);
4152 if (res->beacon_ies && res->len_beacon_ies &&
4153 res->beacon_ies != res->information_elements)
4154 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4155 res->len_beacon_ies, res->beacon_ies);
4156 if (res->tsf)
4157 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4158 if (res->beacon_interval)
4159 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4160 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4161 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4162 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4163 jiffies_to_msecs(jiffies - intbss->ts));
4164
4165 switch (rdev->wiphy.signal_type) {
4166 case CFG80211_SIGNAL_TYPE_MBM:
4167 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4168 break;
4169 case CFG80211_SIGNAL_TYPE_UNSPEC:
4170 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4171 break;
4172 default:
4173 break;
4174 }
4175
4176 switch (wdev->iftype) {
4177 case NL80211_IFTYPE_P2P_CLIENT:
4178 case NL80211_IFTYPE_STATION:
4179 if (intbss == wdev->current_bss)
4180 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4181 NL80211_BSS_STATUS_ASSOCIATED);
4182 break;
4183 case NL80211_IFTYPE_ADHOC:
4184 if (intbss == wdev->current_bss)
4185 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4186 NL80211_BSS_STATUS_IBSS_JOINED);
4187 break;
4188 default:
4189 break;
4190 }
4191
4192 nla_nest_end(msg, bss);
4193
4194 return genlmsg_end(msg, hdr);
4195
4196 nla_put_failure:
4197 genlmsg_cancel(msg, hdr);
4198 return -EMSGSIZE;
4199 }
4200
4201 static int nl80211_dump_scan(struct sk_buff *skb,
4202 struct netlink_callback *cb)
4203 {
4204 struct cfg80211_registered_device *rdev;
4205 struct net_device *dev;
4206 struct cfg80211_internal_bss *scan;
4207 struct wireless_dev *wdev;
4208 int start = cb->args[1], idx = 0;
4209 int err;
4210
4211 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4212 if (err)
4213 return err;
4214
4215 wdev = dev->ieee80211_ptr;
4216
4217 wdev_lock(wdev);
4218 spin_lock_bh(&rdev->bss_lock);
4219 cfg80211_bss_expire(rdev);
4220
4221 cb->seq = rdev->bss_generation;
4222
4223 list_for_each_entry(scan, &rdev->bss_list, list) {
4224 if (++idx <= start)
4225 continue;
4226 if (nl80211_send_bss(skb, cb,
4227 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4228 rdev, wdev, scan) < 0) {
4229 idx--;
4230 break;
4231 }
4232 }
4233
4234 spin_unlock_bh(&rdev->bss_lock);
4235 wdev_unlock(wdev);
4236
4237 cb->args[1] = idx;
4238 nl80211_finish_netdev_dump(rdev);
4239
4240 return skb->len;
4241 }
4242
4243 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4244 int flags, struct net_device *dev,
4245 struct survey_info *survey)
4246 {
4247 void *hdr;
4248 struct nlattr *infoattr;
4249
4250 hdr = nl80211hdr_put(msg, pid, seq, flags,
4251 NL80211_CMD_NEW_SURVEY_RESULTS);
4252 if (!hdr)
4253 return -ENOMEM;
4254
4255 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4256
4257 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4258 if (!infoattr)
4259 goto nla_put_failure;
4260
4261 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4262 survey->channel->center_freq);
4263 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4264 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4265 survey->noise);
4266 if (survey->filled & SURVEY_INFO_IN_USE)
4267 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4268 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4269 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4270 survey->channel_time);
4271 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4272 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4273 survey->channel_time_busy);
4274 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4275 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4276 survey->channel_time_ext_busy);
4277 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4278 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4279 survey->channel_time_rx);
4280 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4281 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4282 survey->channel_time_tx);
4283
4284 nla_nest_end(msg, infoattr);
4285
4286 return genlmsg_end(msg, hdr);
4287
4288 nla_put_failure:
4289 genlmsg_cancel(msg, hdr);
4290 return -EMSGSIZE;
4291 }
4292
4293 static int nl80211_dump_survey(struct sk_buff *skb,
4294 struct netlink_callback *cb)
4295 {
4296 struct survey_info survey;
4297 struct cfg80211_registered_device *dev;
4298 struct net_device *netdev;
4299 int survey_idx = cb->args[1];
4300 int res;
4301
4302 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4303 if (res)
4304 return res;
4305
4306 if (!dev->ops->dump_survey) {
4307 res = -EOPNOTSUPP;
4308 goto out_err;
4309 }
4310
4311 while (1) {
4312 struct ieee80211_channel *chan;
4313
4314 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4315 &survey);
4316 if (res == -ENOENT)
4317 break;
4318 if (res)
4319 goto out_err;
4320
4321 /* Survey without a channel doesn't make sense */
4322 if (!survey.channel) {
4323 res = -EINVAL;
4324 goto out;
4325 }
4326
4327 chan = ieee80211_get_channel(&dev->wiphy,
4328 survey.channel->center_freq);
4329 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4330 survey_idx++;
4331 continue;
4332 }
4333
4334 if (nl80211_send_survey(skb,
4335 NETLINK_CB(cb->skb).pid,
4336 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4337 netdev,
4338 &survey) < 0)
4339 goto out;
4340 survey_idx++;
4341 }
4342
4343 out:
4344 cb->args[1] = survey_idx;
4345 res = skb->len;
4346 out_err:
4347 nl80211_finish_netdev_dump(dev);
4348 return res;
4349 }
4350
4351 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4352 {
4353 return auth_type <= NL80211_AUTHTYPE_MAX;
4354 }
4355
4356 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4357 {
4358 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4359 NL80211_WPA_VERSION_2));
4360 }
4361
4362 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4363 {
4364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4365 struct net_device *dev = info->user_ptr[1];
4366 struct ieee80211_channel *chan;
4367 const u8 *bssid, *ssid, *ie = NULL;
4368 int err, ssid_len, ie_len = 0;
4369 enum nl80211_auth_type auth_type;
4370 struct key_parse key;
4371 bool local_state_change;
4372
4373 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4374 return -EINVAL;
4375
4376 if (!info->attrs[NL80211_ATTR_MAC])
4377 return -EINVAL;
4378
4379 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4380 return -EINVAL;
4381
4382 if (!info->attrs[NL80211_ATTR_SSID])
4383 return -EINVAL;
4384
4385 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4386 return -EINVAL;
4387
4388 err = nl80211_parse_key(info, &key);
4389 if (err)
4390 return err;
4391
4392 if (key.idx >= 0) {
4393 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4394 return -EINVAL;
4395 if (!key.p.key || !key.p.key_len)
4396 return -EINVAL;
4397 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4398 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4399 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4400 key.p.key_len != WLAN_KEY_LEN_WEP104))
4401 return -EINVAL;
4402 if (key.idx > 4)
4403 return -EINVAL;
4404 } else {
4405 key.p.key_len = 0;
4406 key.p.key = NULL;
4407 }
4408
4409 if (key.idx >= 0) {
4410 int i;
4411 bool ok = false;
4412 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4413 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4414 ok = true;
4415 break;
4416 }
4417 }
4418 if (!ok)
4419 return -EINVAL;
4420 }
4421
4422 if (!rdev->ops->auth)
4423 return -EOPNOTSUPP;
4424
4425 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4426 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4427 return -EOPNOTSUPP;
4428
4429 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4430 chan = ieee80211_get_channel(&rdev->wiphy,
4431 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4432 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4433 return -EINVAL;
4434
4435 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4436 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4437
4438 if (info->attrs[NL80211_ATTR_IE]) {
4439 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4440 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4441 }
4442
4443 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4444 if (!nl80211_valid_auth_type(auth_type))
4445 return -EINVAL;
4446
4447 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4448
4449 /*
4450 * Since we no longer track auth state, ignore
4451 * requests to only change local state.
4452 */
4453 if (local_state_change)
4454 return 0;
4455
4456 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4457 ssid, ssid_len, ie, ie_len,
4458 key.p.key, key.p.key_len, key.idx);
4459 }
4460
4461 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4462 struct genl_info *info,
4463 struct cfg80211_crypto_settings *settings,
4464 int cipher_limit)
4465 {
4466 memset(settings, 0, sizeof(*settings));
4467
4468 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4469
4470 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4471 u16 proto;
4472 proto = nla_get_u16(
4473 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4474 settings->control_port_ethertype = cpu_to_be16(proto);
4475 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4476 proto != ETH_P_PAE)
4477 return -EINVAL;
4478 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4479 settings->control_port_no_encrypt = true;
4480 } else
4481 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4482
4483 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4484 void *data;
4485 int len, i;
4486
4487 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4488 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4489 settings->n_ciphers_pairwise = len / sizeof(u32);
4490
4491 if (len % sizeof(u32))
4492 return -EINVAL;
4493
4494 if (settings->n_ciphers_pairwise > cipher_limit)
4495 return -EINVAL;
4496
4497 memcpy(settings->ciphers_pairwise, data, len);
4498
4499 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4500 if (!cfg80211_supported_cipher_suite(
4501 &rdev->wiphy,
4502 settings->ciphers_pairwise[i]))
4503 return -EINVAL;
4504 }
4505
4506 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4507 settings->cipher_group =
4508 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4509 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4510 settings->cipher_group))
4511 return -EINVAL;
4512 }
4513
4514 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4515 settings->wpa_versions =
4516 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4517 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4518 return -EINVAL;
4519 }
4520
4521 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4522 void *data;
4523 int len;
4524
4525 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4526 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4527 settings->n_akm_suites = len / sizeof(u32);
4528
4529 if (len % sizeof(u32))
4530 return -EINVAL;
4531
4532 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4533 return -EINVAL;
4534
4535 memcpy(settings->akm_suites, data, len);
4536 }
4537
4538 return 0;
4539 }
4540
4541 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4542 {
4543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4544 struct net_device *dev = info->user_ptr[1];
4545 struct cfg80211_crypto_settings crypto;
4546 struct ieee80211_channel *chan;
4547 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4548 int err, ssid_len, ie_len = 0;
4549 bool use_mfp = false;
4550 u32 flags = 0;
4551 struct ieee80211_ht_cap *ht_capa = NULL;
4552 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4553
4554 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4555 return -EINVAL;
4556
4557 if (!info->attrs[NL80211_ATTR_MAC] ||
4558 !info->attrs[NL80211_ATTR_SSID] ||
4559 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4560 return -EINVAL;
4561
4562 if (!rdev->ops->assoc)
4563 return -EOPNOTSUPP;
4564
4565 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4566 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4567 return -EOPNOTSUPP;
4568
4569 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4570
4571 chan = ieee80211_get_channel(&rdev->wiphy,
4572 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4573 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4574 return -EINVAL;
4575
4576 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4577 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4578
4579 if (info->attrs[NL80211_ATTR_IE]) {
4580 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4581 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4582 }
4583
4584 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4585 enum nl80211_mfp mfp =
4586 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4587 if (mfp == NL80211_MFP_REQUIRED)
4588 use_mfp = true;
4589 else if (mfp != NL80211_MFP_NO)
4590 return -EINVAL;
4591 }
4592
4593 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4594 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4595
4596 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4597 flags |= ASSOC_REQ_DISABLE_HT;
4598
4599 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4600 ht_capa_mask =
4601 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4602
4603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4604 if (!ht_capa_mask)
4605 return -EINVAL;
4606 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4607 }
4608
4609 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4610 if (!err)
4611 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4612 ssid, ssid_len, ie, ie_len, use_mfp,
4613 &crypto, flags, ht_capa,
4614 ht_capa_mask);
4615
4616 return err;
4617 }
4618
4619 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4620 {
4621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4622 struct net_device *dev = info->user_ptr[1];
4623 const u8 *ie = NULL, *bssid;
4624 int ie_len = 0;
4625 u16 reason_code;
4626 bool local_state_change;
4627
4628 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4629 return -EINVAL;
4630
4631 if (!info->attrs[NL80211_ATTR_MAC])
4632 return -EINVAL;
4633
4634 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4635 return -EINVAL;
4636
4637 if (!rdev->ops->deauth)
4638 return -EOPNOTSUPP;
4639
4640 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4641 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4642 return -EOPNOTSUPP;
4643
4644 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4645
4646 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4647 if (reason_code == 0) {
4648 /* Reason Code 0 is reserved */
4649 return -EINVAL;
4650 }
4651
4652 if (info->attrs[NL80211_ATTR_IE]) {
4653 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4654 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4655 }
4656
4657 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4658
4659 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4660 local_state_change);
4661 }
4662
4663 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4664 {
4665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4666 struct net_device *dev = info->user_ptr[1];
4667 const u8 *ie = NULL, *bssid;
4668 int ie_len = 0;
4669 u16 reason_code;
4670 bool local_state_change;
4671
4672 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4673 return -EINVAL;
4674
4675 if (!info->attrs[NL80211_ATTR_MAC])
4676 return -EINVAL;
4677
4678 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4679 return -EINVAL;
4680
4681 if (!rdev->ops->disassoc)
4682 return -EOPNOTSUPP;
4683
4684 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4685 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4686 return -EOPNOTSUPP;
4687
4688 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4689
4690 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4691 if (reason_code == 0) {
4692 /* Reason Code 0 is reserved */
4693 return -EINVAL;
4694 }
4695
4696 if (info->attrs[NL80211_ATTR_IE]) {
4697 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4698 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4699 }
4700
4701 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4702
4703 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4704 local_state_change);
4705 }
4706
4707 static bool
4708 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4709 int mcast_rate[IEEE80211_NUM_BANDS],
4710 int rateval)
4711 {
4712 struct wiphy *wiphy = &rdev->wiphy;
4713 bool found = false;
4714 int band, i;
4715
4716 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4717 struct ieee80211_supported_band *sband;
4718
4719 sband = wiphy->bands[band];
4720 if (!sband)
4721 continue;
4722
4723 for (i = 0; i < sband->n_bitrates; i++) {
4724 if (sband->bitrates[i].bitrate == rateval) {
4725 mcast_rate[band] = i + 1;
4726 found = true;
4727 break;
4728 }
4729 }
4730 }
4731
4732 return found;
4733 }
4734
4735 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4736 {
4737 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4738 struct net_device *dev = info->user_ptr[1];
4739 struct cfg80211_ibss_params ibss;
4740 struct wiphy *wiphy;
4741 struct cfg80211_cached_keys *connkeys = NULL;
4742 int err;
4743
4744 memset(&ibss, 0, sizeof(ibss));
4745
4746 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4747 return -EINVAL;
4748
4749 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4750 !info->attrs[NL80211_ATTR_SSID] ||
4751 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4752 return -EINVAL;
4753
4754 ibss.beacon_interval = 100;
4755
4756 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4757 ibss.beacon_interval =
4758 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4759 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4760 return -EINVAL;
4761 }
4762
4763 if (!rdev->ops->join_ibss)
4764 return -EOPNOTSUPP;
4765
4766 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4767 return -EOPNOTSUPP;
4768
4769 wiphy = &rdev->wiphy;
4770
4771 if (info->attrs[NL80211_ATTR_MAC]) {
4772 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4773
4774 if (!is_valid_ether_addr(ibss.bssid))
4775 return -EINVAL;
4776 }
4777 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4778 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4779
4780 if (info->attrs[NL80211_ATTR_IE]) {
4781 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4782 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4783 }
4784
4785 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4786 enum nl80211_channel_type channel_type;
4787
4788 channel_type = nla_get_u32(
4789 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4790 if (channel_type != NL80211_CHAN_NO_HT &&
4791 channel_type != NL80211_CHAN_HT20 &&
4792 channel_type != NL80211_CHAN_HT40MINUS &&
4793 channel_type != NL80211_CHAN_HT40PLUS)
4794 return -EINVAL;
4795
4796 if (channel_type != NL80211_CHAN_NO_HT &&
4797 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
4798 return -EINVAL;
4799
4800 ibss.channel_type = channel_type;
4801 } else {
4802 ibss.channel_type = NL80211_CHAN_NO_HT;
4803 }
4804
4805 ibss.channel = rdev_freq_to_chan(rdev,
4806 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
4807 ibss.channel_type);
4808 if (!ibss.channel ||
4809 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4810 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4811 return -EINVAL;
4812
4813 /* Both channels should be able to initiate communication */
4814 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
4815 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
4816 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
4817 ibss.channel_type))
4818 return -EINVAL;
4819
4820 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4821 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4822
4823 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4824 u8 *rates =
4825 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4826 int n_rates =
4827 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4828 struct ieee80211_supported_band *sband =
4829 wiphy->bands[ibss.channel->band];
4830
4831 err = ieee80211_get_ratemask(sband, rates, n_rates,
4832 &ibss.basic_rates);
4833 if (err)
4834 return err;
4835 }
4836
4837 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4838 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4839 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4840 return -EINVAL;
4841
4842 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4843 connkeys = nl80211_parse_connkeys(rdev,
4844 info->attrs[NL80211_ATTR_KEYS]);
4845 if (IS_ERR(connkeys))
4846 return PTR_ERR(connkeys);
4847 }
4848
4849 ibss.control_port =
4850 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
4851
4852 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4853 if (err)
4854 kfree(connkeys);
4855 return err;
4856 }
4857
4858 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4859 {
4860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4861 struct net_device *dev = info->user_ptr[1];
4862
4863 if (!rdev->ops->leave_ibss)
4864 return -EOPNOTSUPP;
4865
4866 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4867 return -EOPNOTSUPP;
4868
4869 return cfg80211_leave_ibss(rdev, dev, false);
4870 }
4871
4872 #ifdef CONFIG_NL80211_TESTMODE
4873 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4874 .name = "testmode",
4875 };
4876
4877 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4878 {
4879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4880 int err;
4881
4882 if (!info->attrs[NL80211_ATTR_TESTDATA])
4883 return -EINVAL;
4884
4885 err = -EOPNOTSUPP;
4886 if (rdev->ops->testmode_cmd) {
4887 rdev->testmode_info = info;
4888 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4889 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4890 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4891 rdev->testmode_info = NULL;
4892 }
4893
4894 return err;
4895 }
4896
4897 static int nl80211_testmode_dump(struct sk_buff *skb,
4898 struct netlink_callback *cb)
4899 {
4900 struct cfg80211_registered_device *rdev;
4901 int err;
4902 long phy_idx;
4903 void *data = NULL;
4904 int data_len = 0;
4905
4906 if (cb->args[0]) {
4907 /*
4908 * 0 is a valid index, but not valid for args[0],
4909 * so we need to offset by 1.
4910 */
4911 phy_idx = cb->args[0] - 1;
4912 } else {
4913 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4914 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4915 nl80211_policy);
4916 if (err)
4917 return err;
4918 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
4919 phy_idx = nla_get_u32(
4920 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4921 } else {
4922 struct net_device *netdev;
4923
4924 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
4925 nl80211_fam.attrbuf,
4926 &rdev, &netdev);
4927 if (err)
4928 return err;
4929 dev_put(netdev);
4930 phy_idx = rdev->wiphy_idx;
4931 cfg80211_unlock_rdev(rdev);
4932 }
4933 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4934 cb->args[1] =
4935 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4936 }
4937
4938 if (cb->args[1]) {
4939 data = nla_data((void *)cb->args[1]);
4940 data_len = nla_len((void *)cb->args[1]);
4941 }
4942
4943 mutex_lock(&cfg80211_mutex);
4944 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4945 if (!rdev) {
4946 mutex_unlock(&cfg80211_mutex);
4947 return -ENOENT;
4948 }
4949 cfg80211_lock_rdev(rdev);
4950 mutex_unlock(&cfg80211_mutex);
4951
4952 if (!rdev->ops->testmode_dump) {
4953 err = -EOPNOTSUPP;
4954 goto out_err;
4955 }
4956
4957 while (1) {
4958 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4959 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4960 NL80211_CMD_TESTMODE);
4961 struct nlattr *tmdata;
4962
4963 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx) < 0) {
4964 genlmsg_cancel(skb, hdr);
4965 break;
4966 }
4967
4968 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4969 if (!tmdata) {
4970 genlmsg_cancel(skb, hdr);
4971 break;
4972 }
4973 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
4974 data, data_len);
4975 nla_nest_end(skb, tmdata);
4976
4977 if (err == -ENOBUFS || err == -ENOENT) {
4978 genlmsg_cancel(skb, hdr);
4979 break;
4980 } else if (err) {
4981 genlmsg_cancel(skb, hdr);
4982 goto out_err;
4983 }
4984
4985 genlmsg_end(skb, hdr);
4986 }
4987
4988 err = skb->len;
4989 /* see above */
4990 cb->args[0] = phy_idx + 1;
4991 out_err:
4992 cfg80211_unlock_rdev(rdev);
4993 return err;
4994 }
4995
4996 static struct sk_buff *
4997 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4998 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4999 {
5000 struct sk_buff *skb;
5001 void *hdr;
5002 struct nlattr *data;
5003
5004 skb = nlmsg_new(approxlen + 100, gfp);
5005 if (!skb)
5006 return NULL;
5007
5008 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5009 if (!hdr) {
5010 kfree_skb(skb);
5011 return NULL;
5012 }
5013
5014 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5015 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5016
5017 ((void **)skb->cb)[0] = rdev;
5018 ((void **)skb->cb)[1] = hdr;
5019 ((void **)skb->cb)[2] = data;
5020
5021 return skb;
5022
5023 nla_put_failure:
5024 kfree_skb(skb);
5025 return NULL;
5026 }
5027
5028 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5029 int approxlen)
5030 {
5031 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5032
5033 if (WARN_ON(!rdev->testmode_info))
5034 return NULL;
5035
5036 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5037 rdev->testmode_info->snd_pid,
5038 rdev->testmode_info->snd_seq,
5039 GFP_KERNEL);
5040 }
5041 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5042
5043 int cfg80211_testmode_reply(struct sk_buff *skb)
5044 {
5045 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5046 void *hdr = ((void **)skb->cb)[1];
5047 struct nlattr *data = ((void **)skb->cb)[2];
5048
5049 if (WARN_ON(!rdev->testmode_info)) {
5050 kfree_skb(skb);
5051 return -EINVAL;
5052 }
5053
5054 nla_nest_end(skb, data);
5055 genlmsg_end(skb, hdr);
5056 return genlmsg_reply(skb, rdev->testmode_info);
5057 }
5058 EXPORT_SYMBOL(cfg80211_testmode_reply);
5059
5060 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5061 int approxlen, gfp_t gfp)
5062 {
5063 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5064
5065 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5066 }
5067 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5068
5069 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5070 {
5071 void *hdr = ((void **)skb->cb)[1];
5072 struct nlattr *data = ((void **)skb->cb)[2];
5073
5074 nla_nest_end(skb, data);
5075 genlmsg_end(skb, hdr);
5076 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5077 }
5078 EXPORT_SYMBOL(cfg80211_testmode_event);
5079 #endif
5080
5081 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5082 {
5083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5084 struct net_device *dev = info->user_ptr[1];
5085 struct cfg80211_connect_params connect;
5086 struct wiphy *wiphy;
5087 struct cfg80211_cached_keys *connkeys = NULL;
5088 int err;
5089
5090 memset(&connect, 0, sizeof(connect));
5091
5092 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5093 return -EINVAL;
5094
5095 if (!info->attrs[NL80211_ATTR_SSID] ||
5096 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5097 return -EINVAL;
5098
5099 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5100 connect.auth_type =
5101 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5102 if (!nl80211_valid_auth_type(connect.auth_type))
5103 return -EINVAL;
5104 } else
5105 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5106
5107 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5108
5109 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5110 NL80211_MAX_NR_CIPHER_SUITES);
5111 if (err)
5112 return err;
5113
5114 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5115 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5116 return -EOPNOTSUPP;
5117
5118 wiphy = &rdev->wiphy;
5119
5120 connect.bg_scan_period = -1;
5121 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5122 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5123 connect.bg_scan_period =
5124 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5125 }
5126
5127 if (info->attrs[NL80211_ATTR_MAC])
5128 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5129 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5130 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5131
5132 if (info->attrs[NL80211_ATTR_IE]) {
5133 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5134 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5135 }
5136
5137 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5138 connect.channel =
5139 ieee80211_get_channel(wiphy,
5140 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5141 if (!connect.channel ||
5142 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5143 return -EINVAL;
5144 }
5145
5146 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5147 connkeys = nl80211_parse_connkeys(rdev,
5148 info->attrs[NL80211_ATTR_KEYS]);
5149 if (IS_ERR(connkeys))
5150 return PTR_ERR(connkeys);
5151 }
5152
5153 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5154 connect.flags |= ASSOC_REQ_DISABLE_HT;
5155
5156 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5157 memcpy(&connect.ht_capa_mask,
5158 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5159 sizeof(connect.ht_capa_mask));
5160
5161 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5162 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5163 return -EINVAL;
5164 memcpy(&connect.ht_capa,
5165 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5166 sizeof(connect.ht_capa));
5167 }
5168
5169 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5170 if (err)
5171 kfree(connkeys);
5172 return err;
5173 }
5174
5175 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5176 {
5177 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5178 struct net_device *dev = info->user_ptr[1];
5179 u16 reason;
5180
5181 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5182 reason = WLAN_REASON_DEAUTH_LEAVING;
5183 else
5184 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5185
5186 if (reason == 0)
5187 return -EINVAL;
5188
5189 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5190 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5191 return -EOPNOTSUPP;
5192
5193 return cfg80211_disconnect(rdev, dev, reason, true);
5194 }
5195
5196 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5197 {
5198 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5199 struct net *net;
5200 int err;
5201 u32 pid;
5202
5203 if (!info->attrs[NL80211_ATTR_PID])
5204 return -EINVAL;
5205
5206 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5207
5208 net = get_net_ns_by_pid(pid);
5209 if (IS_ERR(net))
5210 return PTR_ERR(net);
5211
5212 err = 0;
5213
5214 /* check if anything to do */
5215 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5216 err = cfg80211_switch_netns(rdev, net);
5217
5218 put_net(net);
5219 return err;
5220 }
5221
5222 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5223 {
5224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5225 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5226 struct cfg80211_pmksa *pmksa) = NULL;
5227 struct net_device *dev = info->user_ptr[1];
5228 struct cfg80211_pmksa pmksa;
5229
5230 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5231
5232 if (!info->attrs[NL80211_ATTR_MAC])
5233 return -EINVAL;
5234
5235 if (!info->attrs[NL80211_ATTR_PMKID])
5236 return -EINVAL;
5237
5238 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5239 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5240
5241 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5242 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5243 return -EOPNOTSUPP;
5244
5245 switch (info->genlhdr->cmd) {
5246 case NL80211_CMD_SET_PMKSA:
5247 rdev_ops = rdev->ops->set_pmksa;
5248 break;
5249 case NL80211_CMD_DEL_PMKSA:
5250 rdev_ops = rdev->ops->del_pmksa;
5251 break;
5252 default:
5253 WARN_ON(1);
5254 break;
5255 }
5256
5257 if (!rdev_ops)
5258 return -EOPNOTSUPP;
5259
5260 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5261 }
5262
5263 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5264 {
5265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5266 struct net_device *dev = info->user_ptr[1];
5267
5268 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5269 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5270 return -EOPNOTSUPP;
5271
5272 if (!rdev->ops->flush_pmksa)
5273 return -EOPNOTSUPP;
5274
5275 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5276 }
5277
5278 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5279 {
5280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5281 struct net_device *dev = info->user_ptr[1];
5282 u8 action_code, dialog_token;
5283 u16 status_code;
5284 u8 *peer;
5285
5286 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5287 !rdev->ops->tdls_mgmt)
5288 return -EOPNOTSUPP;
5289
5290 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5291 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5292 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5293 !info->attrs[NL80211_ATTR_IE] ||
5294 !info->attrs[NL80211_ATTR_MAC])
5295 return -EINVAL;
5296
5297 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5298 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5299 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5300 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5301
5302 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5303 dialog_token, status_code,
5304 nla_data(info->attrs[NL80211_ATTR_IE]),
5305 nla_len(info->attrs[NL80211_ATTR_IE]));
5306 }
5307
5308 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5309 {
5310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5311 struct net_device *dev = info->user_ptr[1];
5312 enum nl80211_tdls_operation operation;
5313 u8 *peer;
5314
5315 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5316 !rdev->ops->tdls_oper)
5317 return -EOPNOTSUPP;
5318
5319 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5320 !info->attrs[NL80211_ATTR_MAC])
5321 return -EINVAL;
5322
5323 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5324 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5325
5326 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5327 }
5328
5329 static int nl80211_remain_on_channel(struct sk_buff *skb,
5330 struct genl_info *info)
5331 {
5332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5333 struct net_device *dev = info->user_ptr[1];
5334 struct ieee80211_channel *chan;
5335 struct sk_buff *msg;
5336 void *hdr;
5337 u64 cookie;
5338 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5339 u32 freq, duration;
5340 int err;
5341
5342 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5343 !info->attrs[NL80211_ATTR_DURATION])
5344 return -EINVAL;
5345
5346 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5347
5348 /*
5349 * We should be on that channel for at least one jiffie,
5350 * and more than 5 seconds seems excessive.
5351 */
5352 if (!duration || !msecs_to_jiffies(duration) ||
5353 duration > rdev->wiphy.max_remain_on_channel_duration)
5354 return -EINVAL;
5355
5356 if (!rdev->ops->remain_on_channel ||
5357 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5358 return -EOPNOTSUPP;
5359
5360 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5361 channel_type = nla_get_u32(
5362 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5363 if (channel_type != NL80211_CHAN_NO_HT &&
5364 channel_type != NL80211_CHAN_HT20 &&
5365 channel_type != NL80211_CHAN_HT40PLUS &&
5366 channel_type != NL80211_CHAN_HT40MINUS)
5367 return -EINVAL;
5368 }
5369
5370 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5371 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5372 if (chan == NULL)
5373 return -EINVAL;
5374
5375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5376 if (!msg)
5377 return -ENOMEM;
5378
5379 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5380 NL80211_CMD_REMAIN_ON_CHANNEL);
5381
5382 if (IS_ERR(hdr)) {
5383 err = PTR_ERR(hdr);
5384 goto free_msg;
5385 }
5386
5387 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5388 channel_type, duration, &cookie);
5389
5390 if (err)
5391 goto free_msg;
5392
5393 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5394
5395 genlmsg_end(msg, hdr);
5396
5397 return genlmsg_reply(msg, info);
5398
5399 nla_put_failure:
5400 err = -ENOBUFS;
5401 free_msg:
5402 nlmsg_free(msg);
5403 return err;
5404 }
5405
5406 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5407 struct genl_info *info)
5408 {
5409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5410 struct net_device *dev = info->user_ptr[1];
5411 u64 cookie;
5412
5413 if (!info->attrs[NL80211_ATTR_COOKIE])
5414 return -EINVAL;
5415
5416 if (!rdev->ops->cancel_remain_on_channel)
5417 return -EOPNOTSUPP;
5418
5419 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5420
5421 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5422 }
5423
5424 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5425 u8 *rates, u8 rates_len)
5426 {
5427 u8 i;
5428 u32 mask = 0;
5429
5430 for (i = 0; i < rates_len; i++) {
5431 int rate = (rates[i] & 0x7f) * 5;
5432 int ridx;
5433 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5434 struct ieee80211_rate *srate =
5435 &sband->bitrates[ridx];
5436 if (rate == srate->bitrate) {
5437 mask |= 1 << ridx;
5438 break;
5439 }
5440 }
5441 if (ridx == sband->n_bitrates)
5442 return 0; /* rate not found */
5443 }
5444
5445 return mask;
5446 }
5447
5448 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5449 u8 *rates, u8 rates_len,
5450 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5451 {
5452 u8 i;
5453
5454 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5455
5456 for (i = 0; i < rates_len; i++) {
5457 int ridx, rbit;
5458
5459 ridx = rates[i] / 8;
5460 rbit = BIT(rates[i] % 8);
5461
5462 /* check validity */
5463 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5464 return false;
5465
5466 /* check availability */
5467 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5468 mcs[ridx] |= rbit;
5469 else
5470 return false;
5471 }
5472
5473 return true;
5474 }
5475
5476 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5477 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5478 .len = NL80211_MAX_SUPP_RATES },
5479 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5480 .len = NL80211_MAX_SUPP_HT_RATES },
5481 };
5482
5483 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5484 struct genl_info *info)
5485 {
5486 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5488 struct cfg80211_bitrate_mask mask;
5489 int rem, i;
5490 struct net_device *dev = info->user_ptr[1];
5491 struct nlattr *tx_rates;
5492 struct ieee80211_supported_band *sband;
5493
5494 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5495 return -EINVAL;
5496
5497 if (!rdev->ops->set_bitrate_mask)
5498 return -EOPNOTSUPP;
5499
5500 memset(&mask, 0, sizeof(mask));
5501 /* Default to all rates enabled */
5502 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5503 sband = rdev->wiphy.bands[i];
5504 mask.control[i].legacy =
5505 sband ? (1 << sband->n_bitrates) - 1 : 0;
5506 if (sband)
5507 memcpy(mask.control[i].mcs,
5508 sband->ht_cap.mcs.rx_mask,
5509 sizeof(mask.control[i].mcs));
5510 else
5511 memset(mask.control[i].mcs, 0,
5512 sizeof(mask.control[i].mcs));
5513 }
5514
5515 /*
5516 * The nested attribute uses enum nl80211_band as the index. This maps
5517 * directly to the enum ieee80211_band values used in cfg80211.
5518 */
5519 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5520 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5521 {
5522 enum ieee80211_band band = nla_type(tx_rates);
5523 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5524 return -EINVAL;
5525 sband = rdev->wiphy.bands[band];
5526 if (sband == NULL)
5527 return -EINVAL;
5528 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5529 nla_len(tx_rates), nl80211_txattr_policy);
5530 if (tb[NL80211_TXRATE_LEGACY]) {
5531 mask.control[band].legacy = rateset_to_mask(
5532 sband,
5533 nla_data(tb[NL80211_TXRATE_LEGACY]),
5534 nla_len(tb[NL80211_TXRATE_LEGACY]));
5535 }
5536 if (tb[NL80211_TXRATE_MCS]) {
5537 if (!ht_rateset_to_mask(
5538 sband,
5539 nla_data(tb[NL80211_TXRATE_MCS]),
5540 nla_len(tb[NL80211_TXRATE_MCS]),
5541 mask.control[band].mcs))
5542 return -EINVAL;
5543 }
5544
5545 if (mask.control[band].legacy == 0) {
5546 /* don't allow empty legacy rates if HT
5547 * is not even supported. */
5548 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5549 return -EINVAL;
5550
5551 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5552 if (mask.control[band].mcs[i])
5553 break;
5554
5555 /* legacy and mcs rates may not be both empty */
5556 if (i == IEEE80211_HT_MCS_MASK_LEN)
5557 return -EINVAL;
5558 }
5559 }
5560
5561 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5562 }
5563
5564 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5565 {
5566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5567 struct net_device *dev = info->user_ptr[1];
5568 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5569
5570 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5571 return -EINVAL;
5572
5573 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5574 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5575
5576 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5577 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5578 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5579 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5580 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5581 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5582 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5583 return -EOPNOTSUPP;
5584
5585 /* not much point in registering if we can't reply */
5586 if (!rdev->ops->mgmt_tx)
5587 return -EOPNOTSUPP;
5588
5589 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5590 frame_type,
5591 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5592 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5593 }
5594
5595 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5596 {
5597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5598 struct net_device *dev = info->user_ptr[1];
5599 struct ieee80211_channel *chan;
5600 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5601 bool channel_type_valid = false;
5602 u32 freq;
5603 int err;
5604 void *hdr = NULL;
5605 u64 cookie;
5606 struct sk_buff *msg = NULL;
5607 unsigned int wait = 0;
5608 bool offchan, no_cck, dont_wait_for_ack;
5609
5610 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5611
5612 if (!info->attrs[NL80211_ATTR_FRAME] ||
5613 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5614 return -EINVAL;
5615
5616 if (!rdev->ops->mgmt_tx)
5617 return -EOPNOTSUPP;
5618
5619 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5620 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5621 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5622 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5623 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5624 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5625 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5626 return -EOPNOTSUPP;
5627
5628 if (info->attrs[NL80211_ATTR_DURATION]) {
5629 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5630 return -EINVAL;
5631 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5632 }
5633
5634 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5635 channel_type = nla_get_u32(
5636 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5637 if (channel_type != NL80211_CHAN_NO_HT &&
5638 channel_type != NL80211_CHAN_HT20 &&
5639 channel_type != NL80211_CHAN_HT40PLUS &&
5640 channel_type != NL80211_CHAN_HT40MINUS)
5641 return -EINVAL;
5642 channel_type_valid = true;
5643 }
5644
5645 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5646
5647 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5648 return -EINVAL;
5649
5650 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5651
5652 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5653 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5654 if (chan == NULL)
5655 return -EINVAL;
5656
5657 if (!dont_wait_for_ack) {
5658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5659 if (!msg)
5660 return -ENOMEM;
5661
5662 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5663 NL80211_CMD_FRAME);
5664
5665 if (IS_ERR(hdr)) {
5666 err = PTR_ERR(hdr);
5667 goto free_msg;
5668 }
5669 }
5670
5671 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5672 channel_type_valid, wait,
5673 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5674 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5675 no_cck, dont_wait_for_ack, &cookie);
5676 if (err)
5677 goto free_msg;
5678
5679 if (msg) {
5680 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5681
5682 genlmsg_end(msg, hdr);
5683 return genlmsg_reply(msg, info);
5684 }
5685
5686 return 0;
5687
5688 nla_put_failure:
5689 err = -ENOBUFS;
5690 free_msg:
5691 nlmsg_free(msg);
5692 return err;
5693 }
5694
5695 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5696 {
5697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5698 struct net_device *dev = info->user_ptr[1];
5699 u64 cookie;
5700
5701 if (!info->attrs[NL80211_ATTR_COOKIE])
5702 return -EINVAL;
5703
5704 if (!rdev->ops->mgmt_tx_cancel_wait)
5705 return -EOPNOTSUPP;
5706
5707 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5708 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5709 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5710 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5711 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5712 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5713 return -EOPNOTSUPP;
5714
5715 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5716
5717 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5718 }
5719
5720 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5721 {
5722 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5723 struct wireless_dev *wdev;
5724 struct net_device *dev = info->user_ptr[1];
5725 u8 ps_state;
5726 bool state;
5727 int err;
5728
5729 if (!info->attrs[NL80211_ATTR_PS_STATE])
5730 return -EINVAL;
5731
5732 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5733
5734 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5735 return -EINVAL;
5736
5737 wdev = dev->ieee80211_ptr;
5738
5739 if (!rdev->ops->set_power_mgmt)
5740 return -EOPNOTSUPP;
5741
5742 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5743
5744 if (state == wdev->ps)
5745 return 0;
5746
5747 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5748 wdev->ps_timeout);
5749 if (!err)
5750 wdev->ps = state;
5751 return err;
5752 }
5753
5754 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5755 {
5756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5757 enum nl80211_ps_state ps_state;
5758 struct wireless_dev *wdev;
5759 struct net_device *dev = info->user_ptr[1];
5760 struct sk_buff *msg;
5761 void *hdr;
5762 int err;
5763
5764 wdev = dev->ieee80211_ptr;
5765
5766 if (!rdev->ops->set_power_mgmt)
5767 return -EOPNOTSUPP;
5768
5769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5770 if (!msg)
5771 return -ENOMEM;
5772
5773 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5774 NL80211_CMD_GET_POWER_SAVE);
5775 if (!hdr) {
5776 err = -ENOBUFS;
5777 goto free_msg;
5778 }
5779
5780 if (wdev->ps)
5781 ps_state = NL80211_PS_ENABLED;
5782 else
5783 ps_state = NL80211_PS_DISABLED;
5784
5785 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5786
5787 genlmsg_end(msg, hdr);
5788 return genlmsg_reply(msg, info);
5789
5790 nla_put_failure:
5791 err = -ENOBUFS;
5792 free_msg:
5793 nlmsg_free(msg);
5794 return err;
5795 }
5796
5797 static struct nla_policy
5798 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5799 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5800 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5801 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5802 };
5803
5804 static int nl80211_set_cqm_rssi(struct genl_info *info,
5805 s32 threshold, u32 hysteresis)
5806 {
5807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5808 struct wireless_dev *wdev;
5809 struct net_device *dev = info->user_ptr[1];
5810
5811 if (threshold > 0)
5812 return -EINVAL;
5813
5814 wdev = dev->ieee80211_ptr;
5815
5816 if (!rdev->ops->set_cqm_rssi_config)
5817 return -EOPNOTSUPP;
5818
5819 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5820 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5821 return -EOPNOTSUPP;
5822
5823 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5824 threshold, hysteresis);
5825 }
5826
5827 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5828 {
5829 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5830 struct nlattr *cqm;
5831 int err;
5832
5833 cqm = info->attrs[NL80211_ATTR_CQM];
5834 if (!cqm) {
5835 err = -EINVAL;
5836 goto out;
5837 }
5838
5839 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5840 nl80211_attr_cqm_policy);
5841 if (err)
5842 goto out;
5843
5844 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5845 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5846 s32 threshold;
5847 u32 hysteresis;
5848 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5849 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5850 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5851 } else
5852 err = -EINVAL;
5853
5854 out:
5855 return err;
5856 }
5857
5858 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5859 {
5860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5861 struct net_device *dev = info->user_ptr[1];
5862 struct mesh_config cfg;
5863 struct mesh_setup setup;
5864 int err;
5865
5866 /* start with default */
5867 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5868 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5869
5870 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5871 /* and parse parameters if given */
5872 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5873 if (err)
5874 return err;
5875 }
5876
5877 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5878 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5879 return -EINVAL;
5880
5881 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5882 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5883
5884 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5885 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
5886 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5887 return -EINVAL;
5888
5889 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5890 /* parse additional setup parameters if given */
5891 err = nl80211_parse_mesh_setup(info, &setup);
5892 if (err)
5893 return err;
5894 }
5895
5896 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5897 }
5898
5899 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5900 {
5901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5902 struct net_device *dev = info->user_ptr[1];
5903
5904 return cfg80211_leave_mesh(rdev, dev);
5905 }
5906
5907 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5908 {
5909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5910 struct sk_buff *msg;
5911 void *hdr;
5912
5913 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5914 return -EOPNOTSUPP;
5915
5916 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5917 if (!msg)
5918 return -ENOMEM;
5919
5920 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5921 NL80211_CMD_GET_WOWLAN);
5922 if (!hdr)
5923 goto nla_put_failure;
5924
5925 if (rdev->wowlan) {
5926 struct nlattr *nl_wowlan;
5927
5928 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5929 if (!nl_wowlan)
5930 goto nla_put_failure;
5931
5932 if (rdev->wowlan->any)
5933 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5934 if (rdev->wowlan->disconnect)
5935 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5936 if (rdev->wowlan->magic_pkt)
5937 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5938 if (rdev->wowlan->gtk_rekey_failure)
5939 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5940 if (rdev->wowlan->eap_identity_req)
5941 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5942 if (rdev->wowlan->four_way_handshake)
5943 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5944 if (rdev->wowlan->rfkill_release)
5945 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5946 if (rdev->wowlan->n_patterns) {
5947 struct nlattr *nl_pats, *nl_pat;
5948 int i, pat_len;
5949
5950 nl_pats = nla_nest_start(msg,
5951 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5952 if (!nl_pats)
5953 goto nla_put_failure;
5954
5955 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5956 nl_pat = nla_nest_start(msg, i + 1);
5957 if (!nl_pat)
5958 goto nla_put_failure;
5959 pat_len = rdev->wowlan->patterns[i].pattern_len;
5960 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5961 DIV_ROUND_UP(pat_len, 8),
5962 rdev->wowlan->patterns[i].mask);
5963 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5964 pat_len,
5965 rdev->wowlan->patterns[i].pattern);
5966 nla_nest_end(msg, nl_pat);
5967 }
5968 nla_nest_end(msg, nl_pats);
5969 }
5970
5971 nla_nest_end(msg, nl_wowlan);
5972 }
5973
5974 genlmsg_end(msg, hdr);
5975 return genlmsg_reply(msg, info);
5976
5977 nla_put_failure:
5978 nlmsg_free(msg);
5979 return -ENOBUFS;
5980 }
5981
5982 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5983 {
5984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5985 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5986 struct cfg80211_wowlan no_triggers = {};
5987 struct cfg80211_wowlan new_triggers = {};
5988 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5989 int err, i;
5990
5991 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5992 return -EOPNOTSUPP;
5993
5994 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5995 goto no_triggers;
5996
5997 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5998 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5999 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6000 nl80211_wowlan_policy);
6001 if (err)
6002 return err;
6003
6004 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6005 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6006 return -EINVAL;
6007 new_triggers.any = true;
6008 }
6009
6010 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6011 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6012 return -EINVAL;
6013 new_triggers.disconnect = true;
6014 }
6015
6016 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6017 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6018 return -EINVAL;
6019 new_triggers.magic_pkt = true;
6020 }
6021
6022 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6023 return -EINVAL;
6024
6025 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6026 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6027 return -EINVAL;
6028 new_triggers.gtk_rekey_failure = true;
6029 }
6030
6031 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6032 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6033 return -EINVAL;
6034 new_triggers.eap_identity_req = true;
6035 }
6036
6037 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6038 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6039 return -EINVAL;
6040 new_triggers.four_way_handshake = true;
6041 }
6042
6043 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6044 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6045 return -EINVAL;
6046 new_triggers.rfkill_release = true;
6047 }
6048
6049 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6050 struct nlattr *pat;
6051 int n_patterns = 0;
6052 int rem, pat_len, mask_len;
6053 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6054
6055 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6056 rem)
6057 n_patterns++;
6058 if (n_patterns > wowlan->n_patterns)
6059 return -EINVAL;
6060
6061 new_triggers.patterns = kcalloc(n_patterns,
6062 sizeof(new_triggers.patterns[0]),
6063 GFP_KERNEL);
6064 if (!new_triggers.patterns)
6065 return -ENOMEM;
6066
6067 new_triggers.n_patterns = n_patterns;
6068 i = 0;
6069
6070 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6071 rem) {
6072 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6073 nla_data(pat), nla_len(pat), NULL);
6074 err = -EINVAL;
6075 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6076 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6077 goto error;
6078 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6079 mask_len = DIV_ROUND_UP(pat_len, 8);
6080 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6081 mask_len)
6082 goto error;
6083 if (pat_len > wowlan->pattern_max_len ||
6084 pat_len < wowlan->pattern_min_len)
6085 goto error;
6086
6087 new_triggers.patterns[i].mask =
6088 kmalloc(mask_len + pat_len, GFP_KERNEL);
6089 if (!new_triggers.patterns[i].mask) {
6090 err = -ENOMEM;
6091 goto error;
6092 }
6093 new_triggers.patterns[i].pattern =
6094 new_triggers.patterns[i].mask + mask_len;
6095 memcpy(new_triggers.patterns[i].mask,
6096 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6097 mask_len);
6098 new_triggers.patterns[i].pattern_len = pat_len;
6099 memcpy(new_triggers.patterns[i].pattern,
6100 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6101 pat_len);
6102 i++;
6103 }
6104 }
6105
6106 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6107 struct cfg80211_wowlan *ntrig;
6108 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6109 GFP_KERNEL);
6110 if (!ntrig) {
6111 err = -ENOMEM;
6112 goto error;
6113 }
6114 cfg80211_rdev_free_wowlan(rdev);
6115 rdev->wowlan = ntrig;
6116 } else {
6117 no_triggers:
6118 cfg80211_rdev_free_wowlan(rdev);
6119 rdev->wowlan = NULL;
6120 }
6121
6122 return 0;
6123 error:
6124 for (i = 0; i < new_triggers.n_patterns; i++)
6125 kfree(new_triggers.patterns[i].mask);
6126 kfree(new_triggers.patterns);
6127 return err;
6128 }
6129
6130 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6131 {
6132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6133 struct net_device *dev = info->user_ptr[1];
6134 struct wireless_dev *wdev = dev->ieee80211_ptr;
6135 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6136 struct cfg80211_gtk_rekey_data rekey_data;
6137 int err;
6138
6139 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6140 return -EINVAL;
6141
6142 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6143 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6144 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6145 nl80211_rekey_policy);
6146 if (err)
6147 return err;
6148
6149 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6150 return -ERANGE;
6151 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6152 return -ERANGE;
6153 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6154 return -ERANGE;
6155
6156 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6157 NL80211_KEK_LEN);
6158 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6159 NL80211_KCK_LEN);
6160 memcpy(rekey_data.replay_ctr,
6161 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6162 NL80211_REPLAY_CTR_LEN);
6163
6164 wdev_lock(wdev);
6165 if (!wdev->current_bss) {
6166 err = -ENOTCONN;
6167 goto out;
6168 }
6169
6170 if (!rdev->ops->set_rekey_data) {
6171 err = -EOPNOTSUPP;
6172 goto out;
6173 }
6174
6175 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6176 out:
6177 wdev_unlock(wdev);
6178 return err;
6179 }
6180
6181 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6182 struct genl_info *info)
6183 {
6184 struct net_device *dev = info->user_ptr[1];
6185 struct wireless_dev *wdev = dev->ieee80211_ptr;
6186
6187 if (wdev->iftype != NL80211_IFTYPE_AP &&
6188 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6189 return -EINVAL;
6190
6191 if (wdev->ap_unexpected_nlpid)
6192 return -EBUSY;
6193
6194 wdev->ap_unexpected_nlpid = info->snd_pid;
6195 return 0;
6196 }
6197
6198 static int nl80211_probe_client(struct sk_buff *skb,
6199 struct genl_info *info)
6200 {
6201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6202 struct net_device *dev = info->user_ptr[1];
6203 struct wireless_dev *wdev = dev->ieee80211_ptr;
6204 struct sk_buff *msg;
6205 void *hdr;
6206 const u8 *addr;
6207 u64 cookie;
6208 int err;
6209
6210 if (wdev->iftype != NL80211_IFTYPE_AP &&
6211 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6212 return -EOPNOTSUPP;
6213
6214 if (!info->attrs[NL80211_ATTR_MAC])
6215 return -EINVAL;
6216
6217 if (!rdev->ops->probe_client)
6218 return -EOPNOTSUPP;
6219
6220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6221 if (!msg)
6222 return -ENOMEM;
6223
6224 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6225 NL80211_CMD_PROBE_CLIENT);
6226
6227 if (IS_ERR(hdr)) {
6228 err = PTR_ERR(hdr);
6229 goto free_msg;
6230 }
6231
6232 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6233
6234 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6235 if (err)
6236 goto free_msg;
6237
6238 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6239
6240 genlmsg_end(msg, hdr);
6241
6242 return genlmsg_reply(msg, info);
6243
6244 nla_put_failure:
6245 err = -ENOBUFS;
6246 free_msg:
6247 nlmsg_free(msg);
6248 return err;
6249 }
6250
6251 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6252 {
6253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6254
6255 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6256 return -EOPNOTSUPP;
6257
6258 if (rdev->ap_beacons_nlpid)
6259 return -EBUSY;
6260
6261 rdev->ap_beacons_nlpid = info->snd_pid;
6262
6263 return 0;
6264 }
6265
6266 #define NL80211_FLAG_NEED_WIPHY 0x01
6267 #define NL80211_FLAG_NEED_NETDEV 0x02
6268 #define NL80211_FLAG_NEED_RTNL 0x04
6269 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6270 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6271 NL80211_FLAG_CHECK_NETDEV_UP)
6272
6273 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6274 struct genl_info *info)
6275 {
6276 struct cfg80211_registered_device *rdev;
6277 struct net_device *dev;
6278 int err;
6279 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6280
6281 if (rtnl)
6282 rtnl_lock();
6283
6284 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6285 rdev = cfg80211_get_dev_from_info(info);
6286 if (IS_ERR(rdev)) {
6287 if (rtnl)
6288 rtnl_unlock();
6289 return PTR_ERR(rdev);
6290 }
6291 info->user_ptr[0] = rdev;
6292 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6293 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6294 &rdev, &dev);
6295 if (err) {
6296 if (rtnl)
6297 rtnl_unlock();
6298 return err;
6299 }
6300 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6301 !netif_running(dev)) {
6302 cfg80211_unlock_rdev(rdev);
6303 dev_put(dev);
6304 if (rtnl)
6305 rtnl_unlock();
6306 return -ENETDOWN;
6307 }
6308 info->user_ptr[0] = rdev;
6309 info->user_ptr[1] = dev;
6310 }
6311
6312 return 0;
6313 }
6314
6315 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6316 struct genl_info *info)
6317 {
6318 if (info->user_ptr[0])
6319 cfg80211_unlock_rdev(info->user_ptr[0]);
6320 if (info->user_ptr[1])
6321 dev_put(info->user_ptr[1]);
6322 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6323 rtnl_unlock();
6324 }
6325
6326 static struct genl_ops nl80211_ops[] = {
6327 {
6328 .cmd = NL80211_CMD_GET_WIPHY,
6329 .doit = nl80211_get_wiphy,
6330 .dumpit = nl80211_dump_wiphy,
6331 .policy = nl80211_policy,
6332 /* can be retrieved by unprivileged users */
6333 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6334 },
6335 {
6336 .cmd = NL80211_CMD_SET_WIPHY,
6337 .doit = nl80211_set_wiphy,
6338 .policy = nl80211_policy,
6339 .flags = GENL_ADMIN_PERM,
6340 .internal_flags = NL80211_FLAG_NEED_RTNL,
6341 },
6342 {
6343 .cmd = NL80211_CMD_GET_INTERFACE,
6344 .doit = nl80211_get_interface,
6345 .dumpit = nl80211_dump_interface,
6346 .policy = nl80211_policy,
6347 /* can be retrieved by unprivileged users */
6348 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6349 },
6350 {
6351 .cmd = NL80211_CMD_SET_INTERFACE,
6352 .doit = nl80211_set_interface,
6353 .policy = nl80211_policy,
6354 .flags = GENL_ADMIN_PERM,
6355 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6356 NL80211_FLAG_NEED_RTNL,
6357 },
6358 {
6359 .cmd = NL80211_CMD_NEW_INTERFACE,
6360 .doit = nl80211_new_interface,
6361 .policy = nl80211_policy,
6362 .flags = GENL_ADMIN_PERM,
6363 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6364 NL80211_FLAG_NEED_RTNL,
6365 },
6366 {
6367 .cmd = NL80211_CMD_DEL_INTERFACE,
6368 .doit = nl80211_del_interface,
6369 .policy = nl80211_policy,
6370 .flags = GENL_ADMIN_PERM,
6371 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6372 NL80211_FLAG_NEED_RTNL,
6373 },
6374 {
6375 .cmd = NL80211_CMD_GET_KEY,
6376 .doit = nl80211_get_key,
6377 .policy = nl80211_policy,
6378 .flags = GENL_ADMIN_PERM,
6379 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6380 NL80211_FLAG_NEED_RTNL,
6381 },
6382 {
6383 .cmd = NL80211_CMD_SET_KEY,
6384 .doit = nl80211_set_key,
6385 .policy = nl80211_policy,
6386 .flags = GENL_ADMIN_PERM,
6387 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6388 NL80211_FLAG_NEED_RTNL,
6389 },
6390 {
6391 .cmd = NL80211_CMD_NEW_KEY,
6392 .doit = nl80211_new_key,
6393 .policy = nl80211_policy,
6394 .flags = GENL_ADMIN_PERM,
6395 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6396 NL80211_FLAG_NEED_RTNL,
6397 },
6398 {
6399 .cmd = NL80211_CMD_DEL_KEY,
6400 .doit = nl80211_del_key,
6401 .policy = nl80211_policy,
6402 .flags = GENL_ADMIN_PERM,
6403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6404 NL80211_FLAG_NEED_RTNL,
6405 },
6406 {
6407 .cmd = NL80211_CMD_SET_BEACON,
6408 .policy = nl80211_policy,
6409 .flags = GENL_ADMIN_PERM,
6410 .doit = nl80211_set_beacon,
6411 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6412 NL80211_FLAG_NEED_RTNL,
6413 },
6414 {
6415 .cmd = NL80211_CMD_START_AP,
6416 .policy = nl80211_policy,
6417 .flags = GENL_ADMIN_PERM,
6418 .doit = nl80211_start_ap,
6419 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6420 NL80211_FLAG_NEED_RTNL,
6421 },
6422 {
6423 .cmd = NL80211_CMD_STOP_AP,
6424 .policy = nl80211_policy,
6425 .flags = GENL_ADMIN_PERM,
6426 .doit = nl80211_stop_ap,
6427 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6428 NL80211_FLAG_NEED_RTNL,
6429 },
6430 {
6431 .cmd = NL80211_CMD_GET_STATION,
6432 .doit = nl80211_get_station,
6433 .dumpit = nl80211_dump_station,
6434 .policy = nl80211_policy,
6435 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6436 NL80211_FLAG_NEED_RTNL,
6437 },
6438 {
6439 .cmd = NL80211_CMD_SET_STATION,
6440 .doit = nl80211_set_station,
6441 .policy = nl80211_policy,
6442 .flags = GENL_ADMIN_PERM,
6443 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6444 NL80211_FLAG_NEED_RTNL,
6445 },
6446 {
6447 .cmd = NL80211_CMD_NEW_STATION,
6448 .doit = nl80211_new_station,
6449 .policy = nl80211_policy,
6450 .flags = GENL_ADMIN_PERM,
6451 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6452 NL80211_FLAG_NEED_RTNL,
6453 },
6454 {
6455 .cmd = NL80211_CMD_DEL_STATION,
6456 .doit = nl80211_del_station,
6457 .policy = nl80211_policy,
6458 .flags = GENL_ADMIN_PERM,
6459 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6460 NL80211_FLAG_NEED_RTNL,
6461 },
6462 {
6463 .cmd = NL80211_CMD_GET_MPATH,
6464 .doit = nl80211_get_mpath,
6465 .dumpit = nl80211_dump_mpath,
6466 .policy = nl80211_policy,
6467 .flags = GENL_ADMIN_PERM,
6468 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6469 NL80211_FLAG_NEED_RTNL,
6470 },
6471 {
6472 .cmd = NL80211_CMD_SET_MPATH,
6473 .doit = nl80211_set_mpath,
6474 .policy = nl80211_policy,
6475 .flags = GENL_ADMIN_PERM,
6476 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6477 NL80211_FLAG_NEED_RTNL,
6478 },
6479 {
6480 .cmd = NL80211_CMD_NEW_MPATH,
6481 .doit = nl80211_new_mpath,
6482 .policy = nl80211_policy,
6483 .flags = GENL_ADMIN_PERM,
6484 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6485 NL80211_FLAG_NEED_RTNL,
6486 },
6487 {
6488 .cmd = NL80211_CMD_DEL_MPATH,
6489 .doit = nl80211_del_mpath,
6490 .policy = nl80211_policy,
6491 .flags = GENL_ADMIN_PERM,
6492 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6493 NL80211_FLAG_NEED_RTNL,
6494 },
6495 {
6496 .cmd = NL80211_CMD_SET_BSS,
6497 .doit = nl80211_set_bss,
6498 .policy = nl80211_policy,
6499 .flags = GENL_ADMIN_PERM,
6500 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6501 NL80211_FLAG_NEED_RTNL,
6502 },
6503 {
6504 .cmd = NL80211_CMD_GET_REG,
6505 .doit = nl80211_get_reg,
6506 .policy = nl80211_policy,
6507 /* can be retrieved by unprivileged users */
6508 },
6509 {
6510 .cmd = NL80211_CMD_SET_REG,
6511 .doit = nl80211_set_reg,
6512 .policy = nl80211_policy,
6513 .flags = GENL_ADMIN_PERM,
6514 },
6515 {
6516 .cmd = NL80211_CMD_REQ_SET_REG,
6517 .doit = nl80211_req_set_reg,
6518 .policy = nl80211_policy,
6519 .flags = GENL_ADMIN_PERM,
6520 },
6521 {
6522 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6523 .doit = nl80211_get_mesh_config,
6524 .policy = nl80211_policy,
6525 /* can be retrieved by unprivileged users */
6526 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6527 NL80211_FLAG_NEED_RTNL,
6528 },
6529 {
6530 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6531 .doit = nl80211_update_mesh_config,
6532 .policy = nl80211_policy,
6533 .flags = GENL_ADMIN_PERM,
6534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6535 NL80211_FLAG_NEED_RTNL,
6536 },
6537 {
6538 .cmd = NL80211_CMD_TRIGGER_SCAN,
6539 .doit = nl80211_trigger_scan,
6540 .policy = nl80211_policy,
6541 .flags = GENL_ADMIN_PERM,
6542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6543 NL80211_FLAG_NEED_RTNL,
6544 },
6545 {
6546 .cmd = NL80211_CMD_GET_SCAN,
6547 .policy = nl80211_policy,
6548 .dumpit = nl80211_dump_scan,
6549 },
6550 {
6551 .cmd = NL80211_CMD_START_SCHED_SCAN,
6552 .doit = nl80211_start_sched_scan,
6553 .policy = nl80211_policy,
6554 .flags = GENL_ADMIN_PERM,
6555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6556 NL80211_FLAG_NEED_RTNL,
6557 },
6558 {
6559 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6560 .doit = nl80211_stop_sched_scan,
6561 .policy = nl80211_policy,
6562 .flags = GENL_ADMIN_PERM,
6563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6564 NL80211_FLAG_NEED_RTNL,
6565 },
6566 {
6567 .cmd = NL80211_CMD_AUTHENTICATE,
6568 .doit = nl80211_authenticate,
6569 .policy = nl80211_policy,
6570 .flags = GENL_ADMIN_PERM,
6571 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6572 NL80211_FLAG_NEED_RTNL,
6573 },
6574 {
6575 .cmd = NL80211_CMD_ASSOCIATE,
6576 .doit = nl80211_associate,
6577 .policy = nl80211_policy,
6578 .flags = GENL_ADMIN_PERM,
6579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6580 NL80211_FLAG_NEED_RTNL,
6581 },
6582 {
6583 .cmd = NL80211_CMD_DEAUTHENTICATE,
6584 .doit = nl80211_deauthenticate,
6585 .policy = nl80211_policy,
6586 .flags = GENL_ADMIN_PERM,
6587 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6588 NL80211_FLAG_NEED_RTNL,
6589 },
6590 {
6591 .cmd = NL80211_CMD_DISASSOCIATE,
6592 .doit = nl80211_disassociate,
6593 .policy = nl80211_policy,
6594 .flags = GENL_ADMIN_PERM,
6595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6596 NL80211_FLAG_NEED_RTNL,
6597 },
6598 {
6599 .cmd = NL80211_CMD_JOIN_IBSS,
6600 .doit = nl80211_join_ibss,
6601 .policy = nl80211_policy,
6602 .flags = GENL_ADMIN_PERM,
6603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6604 NL80211_FLAG_NEED_RTNL,
6605 },
6606 {
6607 .cmd = NL80211_CMD_LEAVE_IBSS,
6608 .doit = nl80211_leave_ibss,
6609 .policy = nl80211_policy,
6610 .flags = GENL_ADMIN_PERM,
6611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6612 NL80211_FLAG_NEED_RTNL,
6613 },
6614 #ifdef CONFIG_NL80211_TESTMODE
6615 {
6616 .cmd = NL80211_CMD_TESTMODE,
6617 .doit = nl80211_testmode_do,
6618 .dumpit = nl80211_testmode_dump,
6619 .policy = nl80211_policy,
6620 .flags = GENL_ADMIN_PERM,
6621 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6622 NL80211_FLAG_NEED_RTNL,
6623 },
6624 #endif
6625 {
6626 .cmd = NL80211_CMD_CONNECT,
6627 .doit = nl80211_connect,
6628 .policy = nl80211_policy,
6629 .flags = GENL_ADMIN_PERM,
6630 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6631 NL80211_FLAG_NEED_RTNL,
6632 },
6633 {
6634 .cmd = NL80211_CMD_DISCONNECT,
6635 .doit = nl80211_disconnect,
6636 .policy = nl80211_policy,
6637 .flags = GENL_ADMIN_PERM,
6638 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6639 NL80211_FLAG_NEED_RTNL,
6640 },
6641 {
6642 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6643 .doit = nl80211_wiphy_netns,
6644 .policy = nl80211_policy,
6645 .flags = GENL_ADMIN_PERM,
6646 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6647 NL80211_FLAG_NEED_RTNL,
6648 },
6649 {
6650 .cmd = NL80211_CMD_GET_SURVEY,
6651 .policy = nl80211_policy,
6652 .dumpit = nl80211_dump_survey,
6653 },
6654 {
6655 .cmd = NL80211_CMD_SET_PMKSA,
6656 .doit = nl80211_setdel_pmksa,
6657 .policy = nl80211_policy,
6658 .flags = GENL_ADMIN_PERM,
6659 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6660 NL80211_FLAG_NEED_RTNL,
6661 },
6662 {
6663 .cmd = NL80211_CMD_DEL_PMKSA,
6664 .doit = nl80211_setdel_pmksa,
6665 .policy = nl80211_policy,
6666 .flags = GENL_ADMIN_PERM,
6667 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6668 NL80211_FLAG_NEED_RTNL,
6669 },
6670 {
6671 .cmd = NL80211_CMD_FLUSH_PMKSA,
6672 .doit = nl80211_flush_pmksa,
6673 .policy = nl80211_policy,
6674 .flags = GENL_ADMIN_PERM,
6675 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6676 NL80211_FLAG_NEED_RTNL,
6677 },
6678 {
6679 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6680 .doit = nl80211_remain_on_channel,
6681 .policy = nl80211_policy,
6682 .flags = GENL_ADMIN_PERM,
6683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6684 NL80211_FLAG_NEED_RTNL,
6685 },
6686 {
6687 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6688 .doit = nl80211_cancel_remain_on_channel,
6689 .policy = nl80211_policy,
6690 .flags = GENL_ADMIN_PERM,
6691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6692 NL80211_FLAG_NEED_RTNL,
6693 },
6694 {
6695 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6696 .doit = nl80211_set_tx_bitrate_mask,
6697 .policy = nl80211_policy,
6698 .flags = GENL_ADMIN_PERM,
6699 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6700 NL80211_FLAG_NEED_RTNL,
6701 },
6702 {
6703 .cmd = NL80211_CMD_REGISTER_FRAME,
6704 .doit = nl80211_register_mgmt,
6705 .policy = nl80211_policy,
6706 .flags = GENL_ADMIN_PERM,
6707 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6708 NL80211_FLAG_NEED_RTNL,
6709 },
6710 {
6711 .cmd = NL80211_CMD_FRAME,
6712 .doit = nl80211_tx_mgmt,
6713 .policy = nl80211_policy,
6714 .flags = GENL_ADMIN_PERM,
6715 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6716 NL80211_FLAG_NEED_RTNL,
6717 },
6718 {
6719 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6720 .doit = nl80211_tx_mgmt_cancel_wait,
6721 .policy = nl80211_policy,
6722 .flags = GENL_ADMIN_PERM,
6723 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6724 NL80211_FLAG_NEED_RTNL,
6725 },
6726 {
6727 .cmd = NL80211_CMD_SET_POWER_SAVE,
6728 .doit = nl80211_set_power_save,
6729 .policy = nl80211_policy,
6730 .flags = GENL_ADMIN_PERM,
6731 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6732 NL80211_FLAG_NEED_RTNL,
6733 },
6734 {
6735 .cmd = NL80211_CMD_GET_POWER_SAVE,
6736 .doit = nl80211_get_power_save,
6737 .policy = nl80211_policy,
6738 /* can be retrieved by unprivileged users */
6739 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6740 NL80211_FLAG_NEED_RTNL,
6741 },
6742 {
6743 .cmd = NL80211_CMD_SET_CQM,
6744 .doit = nl80211_set_cqm,
6745 .policy = nl80211_policy,
6746 .flags = GENL_ADMIN_PERM,
6747 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6748 NL80211_FLAG_NEED_RTNL,
6749 },
6750 {
6751 .cmd = NL80211_CMD_SET_CHANNEL,
6752 .doit = nl80211_set_channel,
6753 .policy = nl80211_policy,
6754 .flags = GENL_ADMIN_PERM,
6755 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6756 NL80211_FLAG_NEED_RTNL,
6757 },
6758 {
6759 .cmd = NL80211_CMD_SET_WDS_PEER,
6760 .doit = nl80211_set_wds_peer,
6761 .policy = nl80211_policy,
6762 .flags = GENL_ADMIN_PERM,
6763 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6764 NL80211_FLAG_NEED_RTNL,
6765 },
6766 {
6767 .cmd = NL80211_CMD_JOIN_MESH,
6768 .doit = nl80211_join_mesh,
6769 .policy = nl80211_policy,
6770 .flags = GENL_ADMIN_PERM,
6771 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6772 NL80211_FLAG_NEED_RTNL,
6773 },
6774 {
6775 .cmd = NL80211_CMD_LEAVE_MESH,
6776 .doit = nl80211_leave_mesh,
6777 .policy = nl80211_policy,
6778 .flags = GENL_ADMIN_PERM,
6779 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6780 NL80211_FLAG_NEED_RTNL,
6781 },
6782 {
6783 .cmd = NL80211_CMD_GET_WOWLAN,
6784 .doit = nl80211_get_wowlan,
6785 .policy = nl80211_policy,
6786 /* can be retrieved by unprivileged users */
6787 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6788 NL80211_FLAG_NEED_RTNL,
6789 },
6790 {
6791 .cmd = NL80211_CMD_SET_WOWLAN,
6792 .doit = nl80211_set_wowlan,
6793 .policy = nl80211_policy,
6794 .flags = GENL_ADMIN_PERM,
6795 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6796 NL80211_FLAG_NEED_RTNL,
6797 },
6798 {
6799 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6800 .doit = nl80211_set_rekey_data,
6801 .policy = nl80211_policy,
6802 .flags = GENL_ADMIN_PERM,
6803 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6804 NL80211_FLAG_NEED_RTNL,
6805 },
6806 {
6807 .cmd = NL80211_CMD_TDLS_MGMT,
6808 .doit = nl80211_tdls_mgmt,
6809 .policy = nl80211_policy,
6810 .flags = GENL_ADMIN_PERM,
6811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6812 NL80211_FLAG_NEED_RTNL,
6813 },
6814 {
6815 .cmd = NL80211_CMD_TDLS_OPER,
6816 .doit = nl80211_tdls_oper,
6817 .policy = nl80211_policy,
6818 .flags = GENL_ADMIN_PERM,
6819 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6820 NL80211_FLAG_NEED_RTNL,
6821 },
6822 {
6823 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
6824 .doit = nl80211_register_unexpected_frame,
6825 .policy = nl80211_policy,
6826 .flags = GENL_ADMIN_PERM,
6827 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6828 NL80211_FLAG_NEED_RTNL,
6829 },
6830 {
6831 .cmd = NL80211_CMD_PROBE_CLIENT,
6832 .doit = nl80211_probe_client,
6833 .policy = nl80211_policy,
6834 .flags = GENL_ADMIN_PERM,
6835 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6836 NL80211_FLAG_NEED_RTNL,
6837 },
6838 {
6839 .cmd = NL80211_CMD_REGISTER_BEACONS,
6840 .doit = nl80211_register_beacons,
6841 .policy = nl80211_policy,
6842 .flags = GENL_ADMIN_PERM,
6843 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6844 NL80211_FLAG_NEED_RTNL,
6845 },
6846 {
6847 .cmd = NL80211_CMD_SET_NOACK_MAP,
6848 .doit = nl80211_set_noack_map,
6849 .policy = nl80211_policy,
6850 .flags = GENL_ADMIN_PERM,
6851 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6852 NL80211_FLAG_NEED_RTNL,
6853 },
6854
6855 };
6856
6857 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6858 .name = "mlme",
6859 };
6860
6861 /* multicast groups */
6862 static struct genl_multicast_group nl80211_config_mcgrp = {
6863 .name = "config",
6864 };
6865 static struct genl_multicast_group nl80211_scan_mcgrp = {
6866 .name = "scan",
6867 };
6868 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6869 .name = "regulatory",
6870 };
6871
6872 /* notification functions */
6873
6874 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6875 {
6876 struct sk_buff *msg;
6877
6878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6879 if (!msg)
6880 return;
6881
6882 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6883 nlmsg_free(msg);
6884 return;
6885 }
6886
6887 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6888 nl80211_config_mcgrp.id, GFP_KERNEL);
6889 }
6890
6891 static int nl80211_add_scan_req(struct sk_buff *msg,
6892 struct cfg80211_registered_device *rdev)
6893 {
6894 struct cfg80211_scan_request *req = rdev->scan_req;
6895 struct nlattr *nest;
6896 int i;
6897
6898 ASSERT_RDEV_LOCK(rdev);
6899
6900 if (WARN_ON(!req))
6901 return 0;
6902
6903 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6904 if (!nest)
6905 goto nla_put_failure;
6906 for (i = 0; i < req->n_ssids; i++)
6907 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6908 nla_nest_end(msg, nest);
6909
6910 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6911 if (!nest)
6912 goto nla_put_failure;
6913 for (i = 0; i < req->n_channels; i++)
6914 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6915 nla_nest_end(msg, nest);
6916
6917 if (req->ie)
6918 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6919
6920 return 0;
6921 nla_put_failure:
6922 return -ENOBUFS;
6923 }
6924
6925 static int nl80211_send_scan_msg(struct sk_buff *msg,
6926 struct cfg80211_registered_device *rdev,
6927 struct net_device *netdev,
6928 u32 pid, u32 seq, int flags,
6929 u32 cmd)
6930 {
6931 void *hdr;
6932
6933 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6934 if (!hdr)
6935 return -1;
6936
6937 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6938 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6939
6940 /* ignore errors and send incomplete event anyway */
6941 nl80211_add_scan_req(msg, rdev);
6942
6943 return genlmsg_end(msg, hdr);
6944
6945 nla_put_failure:
6946 genlmsg_cancel(msg, hdr);
6947 return -EMSGSIZE;
6948 }
6949
6950 static int
6951 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6952 struct cfg80211_registered_device *rdev,
6953 struct net_device *netdev,
6954 u32 pid, u32 seq, int flags, u32 cmd)
6955 {
6956 void *hdr;
6957
6958 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6959 if (!hdr)
6960 return -1;
6961
6962 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6963 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6964
6965 return genlmsg_end(msg, hdr);
6966
6967 nla_put_failure:
6968 genlmsg_cancel(msg, hdr);
6969 return -EMSGSIZE;
6970 }
6971
6972 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6973 struct net_device *netdev)
6974 {
6975 struct sk_buff *msg;
6976
6977 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6978 if (!msg)
6979 return;
6980
6981 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6982 NL80211_CMD_TRIGGER_SCAN) < 0) {
6983 nlmsg_free(msg);
6984 return;
6985 }
6986
6987 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6988 nl80211_scan_mcgrp.id, GFP_KERNEL);
6989 }
6990
6991 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6992 struct net_device *netdev)
6993 {
6994 struct sk_buff *msg;
6995
6996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6997 if (!msg)
6998 return;
6999
7000 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7001 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7002 nlmsg_free(msg);
7003 return;
7004 }
7005
7006 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7007 nl80211_scan_mcgrp.id, GFP_KERNEL);
7008 }
7009
7010 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7011 struct net_device *netdev)
7012 {
7013 struct sk_buff *msg;
7014
7015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7016 if (!msg)
7017 return;
7018
7019 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7020 NL80211_CMD_SCAN_ABORTED) < 0) {
7021 nlmsg_free(msg);
7022 return;
7023 }
7024
7025 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7026 nl80211_scan_mcgrp.id, GFP_KERNEL);
7027 }
7028
7029 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7030 struct net_device *netdev)
7031 {
7032 struct sk_buff *msg;
7033
7034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7035 if (!msg)
7036 return;
7037
7038 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7039 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7040 nlmsg_free(msg);
7041 return;
7042 }
7043
7044 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7045 nl80211_scan_mcgrp.id, GFP_KERNEL);
7046 }
7047
7048 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7049 struct net_device *netdev, u32 cmd)
7050 {
7051 struct sk_buff *msg;
7052
7053 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7054 if (!msg)
7055 return;
7056
7057 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7058 nlmsg_free(msg);
7059 return;
7060 }
7061
7062 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7063 nl80211_scan_mcgrp.id, GFP_KERNEL);
7064 }
7065
7066 /*
7067 * This can happen on global regulatory changes or device specific settings
7068 * based on custom world regulatory domains.
7069 */
7070 void nl80211_send_reg_change_event(struct regulatory_request *request)
7071 {
7072 struct sk_buff *msg;
7073 void *hdr;
7074
7075 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7076 if (!msg)
7077 return;
7078
7079 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7080 if (!hdr) {
7081 nlmsg_free(msg);
7082 return;
7083 }
7084
7085 /* Userspace can always count this one always being set */
7086 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
7087
7088 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
7089 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7090 NL80211_REGDOM_TYPE_WORLD);
7091 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
7092 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7093 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
7094 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7095 request->intersect)
7096 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7097 NL80211_REGDOM_TYPE_INTERSECTION);
7098 else {
7099 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7100 NL80211_REGDOM_TYPE_COUNTRY);
7101 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
7102 }
7103
7104 if (wiphy_idx_valid(request->wiphy_idx))
7105 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
7106
7107 genlmsg_end(msg, hdr);
7108
7109 rcu_read_lock();
7110 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7111 GFP_ATOMIC);
7112 rcu_read_unlock();
7113
7114 return;
7115
7116 nla_put_failure:
7117 genlmsg_cancel(msg, hdr);
7118 nlmsg_free(msg);
7119 }
7120
7121 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7122 struct net_device *netdev,
7123 const u8 *buf, size_t len,
7124 enum nl80211_commands cmd, gfp_t gfp)
7125 {
7126 struct sk_buff *msg;
7127 void *hdr;
7128
7129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7130 if (!msg)
7131 return;
7132
7133 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7134 if (!hdr) {
7135 nlmsg_free(msg);
7136 return;
7137 }
7138
7139 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7140 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7141 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7142
7143 genlmsg_end(msg, hdr);
7144
7145 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7146 nl80211_mlme_mcgrp.id, gfp);
7147 return;
7148
7149 nla_put_failure:
7150 genlmsg_cancel(msg, hdr);
7151 nlmsg_free(msg);
7152 }
7153
7154 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7155 struct net_device *netdev, const u8 *buf,
7156 size_t len, gfp_t gfp)
7157 {
7158 nl80211_send_mlme_event(rdev, netdev, buf, len,
7159 NL80211_CMD_AUTHENTICATE, gfp);
7160 }
7161
7162 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7163 struct net_device *netdev, const u8 *buf,
7164 size_t len, gfp_t gfp)
7165 {
7166 nl80211_send_mlme_event(rdev, netdev, buf, len,
7167 NL80211_CMD_ASSOCIATE, gfp);
7168 }
7169
7170 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7171 struct net_device *netdev, const u8 *buf,
7172 size_t len, gfp_t gfp)
7173 {
7174 nl80211_send_mlme_event(rdev, netdev, buf, len,
7175 NL80211_CMD_DEAUTHENTICATE, gfp);
7176 }
7177
7178 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7179 struct net_device *netdev, const u8 *buf,
7180 size_t len, gfp_t gfp)
7181 {
7182 nl80211_send_mlme_event(rdev, netdev, buf, len,
7183 NL80211_CMD_DISASSOCIATE, gfp);
7184 }
7185
7186 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7187 struct net_device *netdev, const u8 *buf,
7188 size_t len, gfp_t gfp)
7189 {
7190 nl80211_send_mlme_event(rdev, netdev, buf, len,
7191 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7192 }
7193
7194 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7195 struct net_device *netdev, const u8 *buf,
7196 size_t len, gfp_t gfp)
7197 {
7198 nl80211_send_mlme_event(rdev, netdev, buf, len,
7199 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7200 }
7201
7202 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7203 struct net_device *netdev, int cmd,
7204 const u8 *addr, gfp_t gfp)
7205 {
7206 struct sk_buff *msg;
7207 void *hdr;
7208
7209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7210 if (!msg)
7211 return;
7212
7213 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7214 if (!hdr) {
7215 nlmsg_free(msg);
7216 return;
7217 }
7218
7219 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7220 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7221 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
7222 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7223
7224 genlmsg_end(msg, hdr);
7225
7226 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7227 nl80211_mlme_mcgrp.id, gfp);
7228 return;
7229
7230 nla_put_failure:
7231 genlmsg_cancel(msg, hdr);
7232 nlmsg_free(msg);
7233 }
7234
7235 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7236 struct net_device *netdev, const u8 *addr,
7237 gfp_t gfp)
7238 {
7239 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7240 addr, gfp);
7241 }
7242
7243 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7244 struct net_device *netdev, const u8 *addr,
7245 gfp_t gfp)
7246 {
7247 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7248 addr, gfp);
7249 }
7250
7251 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7252 struct net_device *netdev, const u8 *bssid,
7253 const u8 *req_ie, size_t req_ie_len,
7254 const u8 *resp_ie, size_t resp_ie_len,
7255 u16 status, gfp_t gfp)
7256 {
7257 struct sk_buff *msg;
7258 void *hdr;
7259
7260 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7261 if (!msg)
7262 return;
7263
7264 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7265 if (!hdr) {
7266 nlmsg_free(msg);
7267 return;
7268 }
7269
7270 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7271 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7272 if (bssid)
7273 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7274 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
7275 if (req_ie)
7276 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7277 if (resp_ie)
7278 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7279
7280 genlmsg_end(msg, hdr);
7281
7282 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7283 nl80211_mlme_mcgrp.id, gfp);
7284 return;
7285
7286 nla_put_failure:
7287 genlmsg_cancel(msg, hdr);
7288 nlmsg_free(msg);
7289
7290 }
7291
7292 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7293 struct net_device *netdev, const u8 *bssid,
7294 const u8 *req_ie, size_t req_ie_len,
7295 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7296 {
7297 struct sk_buff *msg;
7298 void *hdr;
7299
7300 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7301 if (!msg)
7302 return;
7303
7304 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7305 if (!hdr) {
7306 nlmsg_free(msg);
7307 return;
7308 }
7309
7310 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7311 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7312 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7313 if (req_ie)
7314 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7315 if (resp_ie)
7316 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7317
7318 genlmsg_end(msg, hdr);
7319
7320 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7321 nl80211_mlme_mcgrp.id, gfp);
7322 return;
7323
7324 nla_put_failure:
7325 genlmsg_cancel(msg, hdr);
7326 nlmsg_free(msg);
7327
7328 }
7329
7330 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7331 struct net_device *netdev, u16 reason,
7332 const u8 *ie, size_t ie_len, bool from_ap)
7333 {
7334 struct sk_buff *msg;
7335 void *hdr;
7336
7337 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7338 if (!msg)
7339 return;
7340
7341 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7342 if (!hdr) {
7343 nlmsg_free(msg);
7344 return;
7345 }
7346
7347 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7348 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7349 if (from_ap && reason)
7350 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
7351 if (from_ap)
7352 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
7353 if (ie)
7354 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
7355
7356 genlmsg_end(msg, hdr);
7357
7358 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7359 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7360 return;
7361
7362 nla_put_failure:
7363 genlmsg_cancel(msg, hdr);
7364 nlmsg_free(msg);
7365
7366 }
7367
7368 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7369 struct net_device *netdev, const u8 *bssid,
7370 gfp_t gfp)
7371 {
7372 struct sk_buff *msg;
7373 void *hdr;
7374
7375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7376 if (!msg)
7377 return;
7378
7379 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7380 if (!hdr) {
7381 nlmsg_free(msg);
7382 return;
7383 }
7384
7385 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7386 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7387 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7388
7389 genlmsg_end(msg, hdr);
7390
7391 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7392 nl80211_mlme_mcgrp.id, gfp);
7393 return;
7394
7395 nla_put_failure:
7396 genlmsg_cancel(msg, hdr);
7397 nlmsg_free(msg);
7398 }
7399
7400 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7401 struct net_device *netdev,
7402 const u8 *macaddr, const u8* ie, u8 ie_len,
7403 gfp_t gfp)
7404 {
7405 struct sk_buff *msg;
7406 void *hdr;
7407
7408 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7409 if (!msg)
7410 return;
7411
7412 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7413 if (!hdr) {
7414 nlmsg_free(msg);
7415 return;
7416 }
7417
7418 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7419 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7420 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
7421 if (ie_len && ie)
7422 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
7423
7424 genlmsg_end(msg, hdr);
7425
7426 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7427 nl80211_mlme_mcgrp.id, gfp);
7428 return;
7429
7430 nla_put_failure:
7431 genlmsg_cancel(msg, hdr);
7432 nlmsg_free(msg);
7433 }
7434
7435 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7436 struct net_device *netdev, const u8 *addr,
7437 enum nl80211_key_type key_type, int key_id,
7438 const u8 *tsc, gfp_t gfp)
7439 {
7440 struct sk_buff *msg;
7441 void *hdr;
7442
7443 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7444 if (!msg)
7445 return;
7446
7447 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7448 if (!hdr) {
7449 nlmsg_free(msg);
7450 return;
7451 }
7452
7453 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7454 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7455 if (addr)
7456 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7457 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7458 if (key_id != -1)
7459 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7460 if (tsc)
7461 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7462
7463 genlmsg_end(msg, hdr);
7464
7465 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7466 nl80211_mlme_mcgrp.id, gfp);
7467 return;
7468
7469 nla_put_failure:
7470 genlmsg_cancel(msg, hdr);
7471 nlmsg_free(msg);
7472 }
7473
7474 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7475 struct ieee80211_channel *channel_before,
7476 struct ieee80211_channel *channel_after)
7477 {
7478 struct sk_buff *msg;
7479 void *hdr;
7480 struct nlattr *nl_freq;
7481
7482 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7483 if (!msg)
7484 return;
7485
7486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7487 if (!hdr) {
7488 nlmsg_free(msg);
7489 return;
7490 }
7491
7492 /*
7493 * Since we are applying the beacon hint to a wiphy we know its
7494 * wiphy_idx is valid
7495 */
7496 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7497
7498 /* Before */
7499 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7500 if (!nl_freq)
7501 goto nla_put_failure;
7502 if (nl80211_msg_put_channel(msg, channel_before))
7503 goto nla_put_failure;
7504 nla_nest_end(msg, nl_freq);
7505
7506 /* After */
7507 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7508 if (!nl_freq)
7509 goto nla_put_failure;
7510 if (nl80211_msg_put_channel(msg, channel_after))
7511 goto nla_put_failure;
7512 nla_nest_end(msg, nl_freq);
7513
7514 genlmsg_end(msg, hdr);
7515
7516 rcu_read_lock();
7517 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7518 GFP_ATOMIC);
7519 rcu_read_unlock();
7520
7521 return;
7522
7523 nla_put_failure:
7524 genlmsg_cancel(msg, hdr);
7525 nlmsg_free(msg);
7526 }
7527
7528 static void nl80211_send_remain_on_chan_event(
7529 int cmd, struct cfg80211_registered_device *rdev,
7530 struct net_device *netdev, u64 cookie,
7531 struct ieee80211_channel *chan,
7532 enum nl80211_channel_type channel_type,
7533 unsigned int duration, gfp_t gfp)
7534 {
7535 struct sk_buff *msg;
7536 void *hdr;
7537
7538 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7539 if (!msg)
7540 return;
7541
7542 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7543 if (!hdr) {
7544 nlmsg_free(msg);
7545 return;
7546 }
7547
7548 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7549 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7550 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7551 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7552 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7553
7554 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7555 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7556
7557 genlmsg_end(msg, hdr);
7558
7559 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7560 nl80211_mlme_mcgrp.id, gfp);
7561 return;
7562
7563 nla_put_failure:
7564 genlmsg_cancel(msg, hdr);
7565 nlmsg_free(msg);
7566 }
7567
7568 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7569 struct net_device *netdev, u64 cookie,
7570 struct ieee80211_channel *chan,
7571 enum nl80211_channel_type channel_type,
7572 unsigned int duration, gfp_t gfp)
7573 {
7574 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7575 rdev, netdev, cookie, chan,
7576 channel_type, duration, gfp);
7577 }
7578
7579 void nl80211_send_remain_on_channel_cancel(
7580 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7581 u64 cookie, struct ieee80211_channel *chan,
7582 enum nl80211_channel_type channel_type, gfp_t gfp)
7583 {
7584 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7585 rdev, netdev, cookie, chan,
7586 channel_type, 0, gfp);
7587 }
7588
7589 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7590 struct net_device *dev, const u8 *mac_addr,
7591 struct station_info *sinfo, gfp_t gfp)
7592 {
7593 struct sk_buff *msg;
7594
7595 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7596 if (!msg)
7597 return;
7598
7599 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7600 nlmsg_free(msg);
7601 return;
7602 }
7603
7604 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7605 nl80211_mlme_mcgrp.id, gfp);
7606 }
7607
7608 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7609 struct net_device *dev, const u8 *mac_addr,
7610 gfp_t gfp)
7611 {
7612 struct sk_buff *msg;
7613 void *hdr;
7614
7615 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7616 if (!msg)
7617 return;
7618
7619 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7620 if (!hdr) {
7621 nlmsg_free(msg);
7622 return;
7623 }
7624
7625 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7626 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7627
7628 genlmsg_end(msg, hdr);
7629
7630 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7631 nl80211_mlme_mcgrp.id, gfp);
7632 return;
7633
7634 nla_put_failure:
7635 genlmsg_cancel(msg, hdr);
7636 nlmsg_free(msg);
7637 }
7638
7639 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
7640 const u8 *addr, gfp_t gfp)
7641 {
7642 struct wireless_dev *wdev = dev->ieee80211_ptr;
7643 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7644 struct sk_buff *msg;
7645 void *hdr;
7646 int err;
7647 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
7648
7649 if (!nlpid)
7650 return false;
7651
7652 msg = nlmsg_new(100, gfp);
7653 if (!msg)
7654 return true;
7655
7656 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7657 if (!hdr) {
7658 nlmsg_free(msg);
7659 return true;
7660 }
7661
7662 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7663 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7664 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7665
7666 err = genlmsg_end(msg, hdr);
7667 if (err < 0) {
7668 nlmsg_free(msg);
7669 return true;
7670 }
7671
7672 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7673 return true;
7674
7675 nla_put_failure:
7676 genlmsg_cancel(msg, hdr);
7677 nlmsg_free(msg);
7678 return true;
7679 }
7680
7681 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
7682 {
7683 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
7684 addr, gfp);
7685 }
7686
7687 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
7688 const u8 *addr, gfp_t gfp)
7689 {
7690 return __nl80211_unexpected_frame(dev,
7691 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
7692 addr, gfp);
7693 }
7694
7695 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7696 struct net_device *netdev, u32 nlpid,
7697 int freq, int sig_dbm,
7698 const u8 *buf, size_t len, gfp_t gfp)
7699 {
7700 struct sk_buff *msg;
7701 void *hdr;
7702
7703 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7704 if (!msg)
7705 return -ENOMEM;
7706
7707 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7708 if (!hdr) {
7709 nlmsg_free(msg);
7710 return -ENOMEM;
7711 }
7712
7713 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7714 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7716 if (sig_dbm)
7717 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
7718 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7719
7720 genlmsg_end(msg, hdr);
7721
7722 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7723
7724 nla_put_failure:
7725 genlmsg_cancel(msg, hdr);
7726 nlmsg_free(msg);
7727 return -ENOBUFS;
7728 }
7729
7730 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7731 struct net_device *netdev, u64 cookie,
7732 const u8 *buf, size_t len, bool ack,
7733 gfp_t gfp)
7734 {
7735 struct sk_buff *msg;
7736 void *hdr;
7737
7738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7739 if (!msg)
7740 return;
7741
7742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7743 if (!hdr) {
7744 nlmsg_free(msg);
7745 return;
7746 }
7747
7748 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7749 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7750 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7751 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7752 if (ack)
7753 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7754
7755 genlmsg_end(msg, hdr);
7756
7757 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7758 return;
7759
7760 nla_put_failure:
7761 genlmsg_cancel(msg, hdr);
7762 nlmsg_free(msg);
7763 }
7764
7765 void
7766 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7767 struct net_device *netdev,
7768 enum nl80211_cqm_rssi_threshold_event rssi_event,
7769 gfp_t gfp)
7770 {
7771 struct sk_buff *msg;
7772 struct nlattr *pinfoattr;
7773 void *hdr;
7774
7775 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7776 if (!msg)
7777 return;
7778
7779 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7780 if (!hdr) {
7781 nlmsg_free(msg);
7782 return;
7783 }
7784
7785 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7786 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7787
7788 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7789 if (!pinfoattr)
7790 goto nla_put_failure;
7791
7792 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7793 rssi_event);
7794
7795 nla_nest_end(msg, pinfoattr);
7796
7797 genlmsg_end(msg, hdr);
7798
7799 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7800 nl80211_mlme_mcgrp.id, gfp);
7801 return;
7802
7803 nla_put_failure:
7804 genlmsg_cancel(msg, hdr);
7805 nlmsg_free(msg);
7806 }
7807
7808 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7809 struct net_device *netdev, const u8 *bssid,
7810 const u8 *replay_ctr, gfp_t gfp)
7811 {
7812 struct sk_buff *msg;
7813 struct nlattr *rekey_attr;
7814 void *hdr;
7815
7816 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7817 if (!msg)
7818 return;
7819
7820 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7821 if (!hdr) {
7822 nlmsg_free(msg);
7823 return;
7824 }
7825
7826 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7827 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7828 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7829
7830 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7831 if (!rekey_attr)
7832 goto nla_put_failure;
7833
7834 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7835 NL80211_REPLAY_CTR_LEN, replay_ctr);
7836
7837 nla_nest_end(msg, rekey_attr);
7838
7839 genlmsg_end(msg, hdr);
7840
7841 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7842 nl80211_mlme_mcgrp.id, gfp);
7843 return;
7844
7845 nla_put_failure:
7846 genlmsg_cancel(msg, hdr);
7847 nlmsg_free(msg);
7848 }
7849
7850 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7851 struct net_device *netdev, int index,
7852 const u8 *bssid, bool preauth, gfp_t gfp)
7853 {
7854 struct sk_buff *msg;
7855 struct nlattr *attr;
7856 void *hdr;
7857
7858 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7859 if (!msg)
7860 return;
7861
7862 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7863 if (!hdr) {
7864 nlmsg_free(msg);
7865 return;
7866 }
7867
7868 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7869 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7870
7871 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7872 if (!attr)
7873 goto nla_put_failure;
7874
7875 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7876 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7877 if (preauth)
7878 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7879
7880 nla_nest_end(msg, attr);
7881
7882 genlmsg_end(msg, hdr);
7883
7884 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7885 nl80211_mlme_mcgrp.id, gfp);
7886 return;
7887
7888 nla_put_failure:
7889 genlmsg_cancel(msg, hdr);
7890 nlmsg_free(msg);
7891 }
7892
7893 void
7894 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7895 struct net_device *netdev, const u8 *peer,
7896 u32 num_packets, gfp_t gfp)
7897 {
7898 struct sk_buff *msg;
7899 struct nlattr *pinfoattr;
7900 void *hdr;
7901
7902 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7903 if (!msg)
7904 return;
7905
7906 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7907 if (!hdr) {
7908 nlmsg_free(msg);
7909 return;
7910 }
7911
7912 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7913 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7914 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7915
7916 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7917 if (!pinfoattr)
7918 goto nla_put_failure;
7919
7920 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7921
7922 nla_nest_end(msg, pinfoattr);
7923
7924 genlmsg_end(msg, hdr);
7925
7926 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7927 nl80211_mlme_mcgrp.id, gfp);
7928 return;
7929
7930 nla_put_failure:
7931 genlmsg_cancel(msg, hdr);
7932 nlmsg_free(msg);
7933 }
7934
7935 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
7936 u64 cookie, bool acked, gfp_t gfp)
7937 {
7938 struct wireless_dev *wdev = dev->ieee80211_ptr;
7939 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7940 struct sk_buff *msg;
7941 void *hdr;
7942 int err;
7943
7944 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7945 if (!msg)
7946 return;
7947
7948 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
7949 if (!hdr) {
7950 nlmsg_free(msg);
7951 return;
7952 }
7953
7954 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7955 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7956 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7957 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7958 if (acked)
7959 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7960
7961 err = genlmsg_end(msg, hdr);
7962 if (err < 0) {
7963 nlmsg_free(msg);
7964 return;
7965 }
7966
7967 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7968 nl80211_mlme_mcgrp.id, gfp);
7969 return;
7970
7971 nla_put_failure:
7972 genlmsg_cancel(msg, hdr);
7973 nlmsg_free(msg);
7974 }
7975 EXPORT_SYMBOL(cfg80211_probe_status);
7976
7977 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
7978 const u8 *frame, size_t len,
7979 int freq, int sig_dbm, gfp_t gfp)
7980 {
7981 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
7982 struct sk_buff *msg;
7983 void *hdr;
7984 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
7985
7986 if (!nlpid)
7987 return;
7988
7989 msg = nlmsg_new(len + 100, gfp);
7990 if (!msg)
7991 return;
7992
7993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7994 if (!hdr) {
7995 nlmsg_free(msg);
7996 return;
7997 }
7998
7999 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
8000 if (freq)
8001 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8002 if (sig_dbm)
8003 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
8004 NLA_PUT(msg, NL80211_ATTR_FRAME, len, frame);
8005
8006 genlmsg_end(msg, hdr);
8007
8008 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8009 return;
8010
8011 nla_put_failure:
8012 genlmsg_cancel(msg, hdr);
8013 nlmsg_free(msg);
8014 }
8015 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8016
8017 static int nl80211_netlink_notify(struct notifier_block * nb,
8018 unsigned long state,
8019 void *_notify)
8020 {
8021 struct netlink_notify *notify = _notify;
8022 struct cfg80211_registered_device *rdev;
8023 struct wireless_dev *wdev;
8024
8025 if (state != NETLINK_URELEASE)
8026 return NOTIFY_DONE;
8027
8028 rcu_read_lock();
8029
8030 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8031 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8032 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8033 if (rdev->ap_beacons_nlpid == notify->pid)
8034 rdev->ap_beacons_nlpid = 0;
8035 }
8036
8037 rcu_read_unlock();
8038
8039 return NOTIFY_DONE;
8040 }
8041
8042 static struct notifier_block nl80211_netlink_notifier = {
8043 .notifier_call = nl80211_netlink_notify,
8044 };
8045
8046 /* initialisation/exit functions */
8047
8048 int nl80211_init(void)
8049 {
8050 int err;
8051
8052 err = genl_register_family_with_ops(&nl80211_fam,
8053 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8054 if (err)
8055 return err;
8056
8057 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8058 if (err)
8059 goto err_out;
8060
8061 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8062 if (err)
8063 goto err_out;
8064
8065 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8066 if (err)
8067 goto err_out;
8068
8069 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8070 if (err)
8071 goto err_out;
8072
8073 #ifdef CONFIG_NL80211_TESTMODE
8074 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8075 if (err)
8076 goto err_out;
8077 #endif
8078
8079 err = netlink_register_notifier(&nl80211_netlink_notifier);
8080 if (err)
8081 goto err_out;
8082
8083 return 0;
8084 err_out:
8085 genl_unregister_family(&nl80211_fam);
8086 return err;
8087 }
8088
8089 void nl80211_exit(void)
8090 {
8091 netlink_unregister_notifier(&nl80211_netlink_notifier);
8092 genl_unregister_family(&nl80211_fam);
8093 }
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