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{nl,cfg,mac}80211: implement dot11MeshHWMPperrMinInterval
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
136
137 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
138 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
139 .len = IEEE80211_MAX_DATA_LEN },
140 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
141 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
142
143 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
144 .len = IEEE80211_MAX_SSID_LEN },
145 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
146 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
147 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
148 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
149 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
150 [NL80211_ATTR_STA_FLAGS2] = {
151 .len = sizeof(struct nl80211_sta_flag_update),
152 },
153 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
154 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
155 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
156 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
157 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
158 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
159 [NL80211_ATTR_PID] = { .type = NLA_U32 },
160 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
161 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
162 .len = WLAN_PMKID_LEN },
163 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
164 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
165 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
166 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
167 .len = IEEE80211_MAX_DATA_LEN },
168 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
169 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
170 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
171 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
172 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
173 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
174 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
175 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
176 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
177 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
178 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
179 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
180 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
181 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
182 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
183 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
184 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
185 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
186 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
187 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
188 .len = IEEE80211_MAX_DATA_LEN },
189 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
190 .len = IEEE80211_MAX_DATA_LEN },
191 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
192 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
193 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
194 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
195 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
196 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
197 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
198 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
199 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
200 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
201 .len = IEEE80211_MAX_DATA_LEN },
202 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
203 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
204 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
205 .len = NL80211_HT_CAPABILITY_LEN
206 },
207 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
208 };
209
210 /* policy for the key attributes */
211 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
212 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
213 [NL80211_KEY_IDX] = { .type = NLA_U8 },
214 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
215 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
216 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
217 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
218 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
219 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
220 };
221
222 /* policy for the key default flags */
223 static const struct nla_policy
224 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
225 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
226 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
227 };
228
229 /* policy for WoWLAN attributes */
230 static const struct nla_policy
231 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
232 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
233 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
234 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
235 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
236 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
237 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
238 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
239 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
240 };
241
242 /* policy for GTK rekey offload attributes */
243 static const struct nla_policy
244 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
245 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
246 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
247 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
248 };
249
250 static const struct nla_policy
251 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
252 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_SSID_LEN },
254 };
255
256 /* ifidx get helper */
257 static int nl80211_get_ifidx(struct netlink_callback *cb)
258 {
259 int res;
260
261 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
262 nl80211_fam.attrbuf, nl80211_fam.maxattr,
263 nl80211_policy);
264 if (res)
265 return res;
266
267 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
268 return -EINVAL;
269
270 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
271 if (!res)
272 return -EINVAL;
273 return res;
274 }
275
276 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
277 struct netlink_callback *cb,
278 struct cfg80211_registered_device **rdev,
279 struct net_device **dev)
280 {
281 int ifidx = cb->args[0];
282 int err;
283
284 if (!ifidx)
285 ifidx = nl80211_get_ifidx(cb);
286 if (ifidx < 0)
287 return ifidx;
288
289 cb->args[0] = ifidx;
290
291 rtnl_lock();
292
293 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
294 if (!*dev) {
295 err = -ENODEV;
296 goto out_rtnl;
297 }
298
299 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
300 if (IS_ERR(*rdev)) {
301 err = PTR_ERR(*rdev);
302 goto out_rtnl;
303 }
304
305 return 0;
306 out_rtnl:
307 rtnl_unlock();
308 return err;
309 }
310
311 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
312 {
313 cfg80211_unlock_rdev(rdev);
314 rtnl_unlock();
315 }
316
317 /* IE validation */
318 static bool is_valid_ie_attr(const struct nlattr *attr)
319 {
320 const u8 *pos;
321 int len;
322
323 if (!attr)
324 return true;
325
326 pos = nla_data(attr);
327 len = nla_len(attr);
328
329 while (len) {
330 u8 elemlen;
331
332 if (len < 2)
333 return false;
334 len -= 2;
335
336 elemlen = pos[1];
337 if (elemlen > len)
338 return false;
339
340 len -= elemlen;
341 pos += 2 + elemlen;
342 }
343
344 return true;
345 }
346
347 /* message building helper */
348 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
349 int flags, u8 cmd)
350 {
351 /* since there is no private header just add the generic one */
352 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
353 }
354
355 static int nl80211_msg_put_channel(struct sk_buff *msg,
356 struct ieee80211_channel *chan)
357 {
358 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
359 chan->center_freq);
360
361 if (chan->flags & IEEE80211_CHAN_DISABLED)
362 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
363 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
364 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
365 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
366 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
367 if (chan->flags & IEEE80211_CHAN_RADAR)
368 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
369
370 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
371 DBM_TO_MBM(chan->max_power));
372
373 return 0;
374
375 nla_put_failure:
376 return -ENOBUFS;
377 }
378
379 /* netlink command implementations */
380
381 struct key_parse {
382 struct key_params p;
383 int idx;
384 int type;
385 bool def, defmgmt;
386 bool def_uni, def_multi;
387 };
388
389 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
390 {
391 struct nlattr *tb[NL80211_KEY_MAX + 1];
392 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
393 nl80211_key_policy);
394 if (err)
395 return err;
396
397 k->def = !!tb[NL80211_KEY_DEFAULT];
398 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
399
400 if (k->def) {
401 k->def_uni = true;
402 k->def_multi = true;
403 }
404 if (k->defmgmt)
405 k->def_multi = true;
406
407 if (tb[NL80211_KEY_IDX])
408 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
409
410 if (tb[NL80211_KEY_DATA]) {
411 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
412 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
413 }
414
415 if (tb[NL80211_KEY_SEQ]) {
416 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
417 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
418 }
419
420 if (tb[NL80211_KEY_CIPHER])
421 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
422
423 if (tb[NL80211_KEY_TYPE]) {
424 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
425 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
426 return -EINVAL;
427 }
428
429 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
430 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
431 int err = nla_parse_nested(kdt,
432 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(add_beacon, NEW_BEACON);
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_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2081 {
2082 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2083 struct beacon_parameters *info);
2084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2085 struct net_device *dev = info->user_ptr[1];
2086 struct wireless_dev *wdev = dev->ieee80211_ptr;
2087 struct beacon_parameters params;
2088 int haveinfo = 0, err;
2089
2090 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2091 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2092 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2093 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2094 return -EINVAL;
2095
2096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2098 return -EOPNOTSUPP;
2099
2100 memset(&params, 0, sizeof(params));
2101
2102 switch (info->genlhdr->cmd) {
2103 case NL80211_CMD_NEW_BEACON:
2104 /* these are required for NEW_BEACON */
2105 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2106 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2107 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2108 return -EINVAL;
2109
2110 params.interval =
2111 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2112 params.dtim_period =
2113 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2114
2115 err = cfg80211_validate_beacon_int(rdev, params.interval);
2116 if (err)
2117 return err;
2118
2119 /*
2120 * In theory, some of these attributes could be required for
2121 * NEW_BEACON, but since they were not used when the command was
2122 * originally added, keep them optional for old user space
2123 * programs to work with drivers that do not need the additional
2124 * information.
2125 */
2126 if (info->attrs[NL80211_ATTR_SSID]) {
2127 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2128 params.ssid_len =
2129 nla_len(info->attrs[NL80211_ATTR_SSID]);
2130 if (params.ssid_len == 0 ||
2131 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2132 return -EINVAL;
2133 }
2134
2135 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2136 params.hidden_ssid = nla_get_u32(
2137 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2138 if (params.hidden_ssid !=
2139 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2140 params.hidden_ssid !=
2141 NL80211_HIDDEN_SSID_ZERO_LEN &&
2142 params.hidden_ssid !=
2143 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2144 return -EINVAL;
2145 }
2146
2147 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2148
2149 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2150 params.auth_type = nla_get_u32(
2151 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2152 if (!nl80211_valid_auth_type(params.auth_type))
2153 return -EINVAL;
2154 } else
2155 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2156
2157 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2158 NL80211_MAX_NR_CIPHER_SUITES);
2159 if (err)
2160 return err;
2161
2162 call = rdev->ops->add_beacon;
2163 break;
2164 case NL80211_CMD_SET_BEACON:
2165 call = rdev->ops->set_beacon;
2166 break;
2167 default:
2168 WARN_ON(1);
2169 return -EOPNOTSUPP;
2170 }
2171
2172 if (!call)
2173 return -EOPNOTSUPP;
2174
2175 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2176 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2177 params.head_len =
2178 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2179 haveinfo = 1;
2180 }
2181
2182 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2183 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2184 params.tail_len =
2185 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2186 haveinfo = 1;
2187 }
2188
2189 if (!haveinfo)
2190 return -EINVAL;
2191
2192 if (info->attrs[NL80211_ATTR_IE]) {
2193 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2194 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2195 }
2196
2197 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2198 params.proberesp_ies =
2199 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2200 params.proberesp_ies_len =
2201 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2202 }
2203
2204 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2205 params.assocresp_ies =
2206 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2207 params.assocresp_ies_len =
2208 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2209 }
2210
2211 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2212 params.probe_resp =
2213 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2214 params.probe_resp_len =
2215 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2216 }
2217
2218 err = call(&rdev->wiphy, dev, &params);
2219 if (!err && params.interval)
2220 wdev->beacon_interval = params.interval;
2221 return err;
2222 }
2223
2224 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2225 {
2226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2227 struct net_device *dev = info->user_ptr[1];
2228 struct wireless_dev *wdev = dev->ieee80211_ptr;
2229 int err;
2230
2231 if (!rdev->ops->del_beacon)
2232 return -EOPNOTSUPP;
2233
2234 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2235 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2236 return -EOPNOTSUPP;
2237
2238 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2239 if (!err)
2240 wdev->beacon_interval = 0;
2241 return err;
2242 }
2243
2244 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2245 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2246 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2247 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2248 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2249 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2250 };
2251
2252 static int parse_station_flags(struct genl_info *info,
2253 struct station_parameters *params)
2254 {
2255 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2256 struct nlattr *nla;
2257 int flag;
2258
2259 /*
2260 * Try parsing the new attribute first so userspace
2261 * can specify both for older kernels.
2262 */
2263 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2264 if (nla) {
2265 struct nl80211_sta_flag_update *sta_flags;
2266
2267 sta_flags = nla_data(nla);
2268 params->sta_flags_mask = sta_flags->mask;
2269 params->sta_flags_set = sta_flags->set;
2270 if ((params->sta_flags_mask |
2271 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2272 return -EINVAL;
2273 return 0;
2274 }
2275
2276 /* if present, parse the old attribute */
2277
2278 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2279 if (!nla)
2280 return 0;
2281
2282 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2283 nla, sta_flags_policy))
2284 return -EINVAL;
2285
2286 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2287 params->sta_flags_mask &= ~1;
2288
2289 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2290 if (flags[flag])
2291 params->sta_flags_set |= (1<<flag);
2292
2293 return 0;
2294 }
2295
2296 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2297 int attr)
2298 {
2299 struct nlattr *rate;
2300 u16 bitrate;
2301
2302 rate = nla_nest_start(msg, attr);
2303 if (!rate)
2304 goto nla_put_failure;
2305
2306 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2307 bitrate = cfg80211_calculate_bitrate(info);
2308 if (bitrate > 0)
2309 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2310
2311 if (info->flags & RATE_INFO_FLAGS_MCS)
2312 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2313 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2314 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2315 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2316 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2317
2318 nla_nest_end(msg, rate);
2319 return true;
2320
2321 nla_put_failure:
2322 return false;
2323 }
2324
2325 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2326 int flags, struct net_device *dev,
2327 const u8 *mac_addr, struct station_info *sinfo)
2328 {
2329 void *hdr;
2330 struct nlattr *sinfoattr, *bss_param;
2331
2332 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2333 if (!hdr)
2334 return -1;
2335
2336 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2337 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2338
2339 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2340
2341 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2342 if (!sinfoattr)
2343 goto nla_put_failure;
2344 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2345 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2346 sinfo->connected_time);
2347 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2348 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2349 sinfo->inactive_time);
2350 if (sinfo->filled & STATION_INFO_RX_BYTES)
2351 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2352 sinfo->rx_bytes);
2353 if (sinfo->filled & STATION_INFO_TX_BYTES)
2354 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2355 sinfo->tx_bytes);
2356 if (sinfo->filled & STATION_INFO_LLID)
2357 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2358 sinfo->llid);
2359 if (sinfo->filled & STATION_INFO_PLID)
2360 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2361 sinfo->plid);
2362 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2363 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2364 sinfo->plink_state);
2365 if (sinfo->filled & STATION_INFO_SIGNAL)
2366 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2367 sinfo->signal);
2368 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2369 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2370 sinfo->signal_avg);
2371 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2372 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2373 NL80211_STA_INFO_TX_BITRATE))
2374 goto nla_put_failure;
2375 }
2376 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2377 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2378 NL80211_STA_INFO_RX_BITRATE))
2379 goto nla_put_failure;
2380 }
2381 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2382 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2383 sinfo->rx_packets);
2384 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2385 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2386 sinfo->tx_packets);
2387 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2388 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2389 sinfo->tx_retries);
2390 if (sinfo->filled & STATION_INFO_TX_FAILED)
2391 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2392 sinfo->tx_failed);
2393 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2394 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2395 if (!bss_param)
2396 goto nla_put_failure;
2397
2398 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2399 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2400 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2401 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2402 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2403 NLA_PUT_FLAG(msg,
2404 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2405 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2406 sinfo->bss_param.dtim_period);
2407 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2408 sinfo->bss_param.beacon_interval);
2409
2410 nla_nest_end(msg, bss_param);
2411 }
2412 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2413 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2414 sizeof(struct nl80211_sta_flag_update),
2415 &sinfo->sta_flags);
2416 nla_nest_end(msg, sinfoattr);
2417
2418 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2419 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2420 sinfo->assoc_req_ies);
2421
2422 return genlmsg_end(msg, hdr);
2423
2424 nla_put_failure:
2425 genlmsg_cancel(msg, hdr);
2426 return -EMSGSIZE;
2427 }
2428
2429 static int nl80211_dump_station(struct sk_buff *skb,
2430 struct netlink_callback *cb)
2431 {
2432 struct station_info sinfo;
2433 struct cfg80211_registered_device *dev;
2434 struct net_device *netdev;
2435 u8 mac_addr[ETH_ALEN];
2436 int sta_idx = cb->args[1];
2437 int err;
2438
2439 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2440 if (err)
2441 return err;
2442
2443 if (!dev->ops->dump_station) {
2444 err = -EOPNOTSUPP;
2445 goto out_err;
2446 }
2447
2448 while (1) {
2449 memset(&sinfo, 0, sizeof(sinfo));
2450 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2451 mac_addr, &sinfo);
2452 if (err == -ENOENT)
2453 break;
2454 if (err)
2455 goto out_err;
2456
2457 if (nl80211_send_station(skb,
2458 NETLINK_CB(cb->skb).pid,
2459 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2460 netdev, mac_addr,
2461 &sinfo) < 0)
2462 goto out;
2463
2464 sta_idx++;
2465 }
2466
2467
2468 out:
2469 cb->args[1] = sta_idx;
2470 err = skb->len;
2471 out_err:
2472 nl80211_finish_netdev_dump(dev);
2473
2474 return err;
2475 }
2476
2477 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2478 {
2479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2480 struct net_device *dev = info->user_ptr[1];
2481 struct station_info sinfo;
2482 struct sk_buff *msg;
2483 u8 *mac_addr = NULL;
2484 int err;
2485
2486 memset(&sinfo, 0, sizeof(sinfo));
2487
2488 if (!info->attrs[NL80211_ATTR_MAC])
2489 return -EINVAL;
2490
2491 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2492
2493 if (!rdev->ops->get_station)
2494 return -EOPNOTSUPP;
2495
2496 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2497 if (err)
2498 return err;
2499
2500 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2501 if (!msg)
2502 return -ENOMEM;
2503
2504 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2505 dev, mac_addr, &sinfo) < 0) {
2506 nlmsg_free(msg);
2507 return -ENOBUFS;
2508 }
2509
2510 return genlmsg_reply(msg, info);
2511 }
2512
2513 /*
2514 * Get vlan interface making sure it is running and on the right wiphy.
2515 */
2516 static struct net_device *get_vlan(struct genl_info *info,
2517 struct cfg80211_registered_device *rdev)
2518 {
2519 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2520 struct net_device *v;
2521 int ret;
2522
2523 if (!vlanattr)
2524 return NULL;
2525
2526 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2527 if (!v)
2528 return ERR_PTR(-ENODEV);
2529
2530 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2531 ret = -EINVAL;
2532 goto error;
2533 }
2534
2535 if (!netif_running(v)) {
2536 ret = -ENETDOWN;
2537 goto error;
2538 }
2539
2540 return v;
2541 error:
2542 dev_put(v);
2543 return ERR_PTR(ret);
2544 }
2545
2546 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2547 {
2548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2549 int err;
2550 struct net_device *dev = info->user_ptr[1];
2551 struct station_parameters params;
2552 u8 *mac_addr = NULL;
2553
2554 memset(&params, 0, sizeof(params));
2555
2556 params.listen_interval = -1;
2557 params.plink_state = -1;
2558
2559 if (info->attrs[NL80211_ATTR_STA_AID])
2560 return -EINVAL;
2561
2562 if (!info->attrs[NL80211_ATTR_MAC])
2563 return -EINVAL;
2564
2565 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2566
2567 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2568 params.supported_rates =
2569 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2570 params.supported_rates_len =
2571 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2572 }
2573
2574 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2575 params.listen_interval =
2576 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2577
2578 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2579 params.ht_capa =
2580 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2581
2582 if (parse_station_flags(info, &params))
2583 return -EINVAL;
2584
2585 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2586 params.plink_action =
2587 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2588
2589 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2590 params.plink_state =
2591 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2592
2593 params.vlan = get_vlan(info, rdev);
2594 if (IS_ERR(params.vlan))
2595 return PTR_ERR(params.vlan);
2596
2597 /* validate settings */
2598 err = 0;
2599
2600 switch (dev->ieee80211_ptr->iftype) {
2601 case NL80211_IFTYPE_AP:
2602 case NL80211_IFTYPE_AP_VLAN:
2603 case NL80211_IFTYPE_P2P_GO:
2604 /* disallow mesh-specific things */
2605 if (params.plink_action)
2606 err = -EINVAL;
2607 break;
2608 case NL80211_IFTYPE_P2P_CLIENT:
2609 case NL80211_IFTYPE_STATION:
2610 /* disallow things sta doesn't support */
2611 if (params.plink_action)
2612 err = -EINVAL;
2613 if (params.vlan)
2614 err = -EINVAL;
2615 if (params.supported_rates &&
2616 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2617 err = -EINVAL;
2618 if (params.ht_capa)
2619 err = -EINVAL;
2620 if (params.listen_interval >= 0)
2621 err = -EINVAL;
2622 if (params.sta_flags_mask &
2623 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2624 BIT(NL80211_STA_FLAG_TDLS_PEER)))
2625 err = -EINVAL;
2626 /* can't change the TDLS bit */
2627 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2628 (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2629 err = -EINVAL;
2630 break;
2631 case NL80211_IFTYPE_MESH_POINT:
2632 /* disallow things mesh doesn't support */
2633 if (params.vlan)
2634 err = -EINVAL;
2635 if (params.ht_capa)
2636 err = -EINVAL;
2637 if (params.listen_interval >= 0)
2638 err = -EINVAL;
2639 if (params.sta_flags_mask &
2640 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2641 BIT(NL80211_STA_FLAG_MFP) |
2642 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2643 err = -EINVAL;
2644 break;
2645 default:
2646 err = -EINVAL;
2647 }
2648
2649 if (err)
2650 goto out;
2651
2652 if (!rdev->ops->change_station) {
2653 err = -EOPNOTSUPP;
2654 goto out;
2655 }
2656
2657 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2658
2659 out:
2660 if (params.vlan)
2661 dev_put(params.vlan);
2662
2663 return err;
2664 }
2665
2666 static struct nla_policy
2667 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2668 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2669 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2670 };
2671
2672 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2673 {
2674 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2675 int err;
2676 struct net_device *dev = info->user_ptr[1];
2677 struct station_parameters params;
2678 u8 *mac_addr = NULL;
2679
2680 memset(&params, 0, sizeof(params));
2681
2682 if (!info->attrs[NL80211_ATTR_MAC])
2683 return -EINVAL;
2684
2685 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2686 return -EINVAL;
2687
2688 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2689 return -EINVAL;
2690
2691 if (!info->attrs[NL80211_ATTR_STA_AID])
2692 return -EINVAL;
2693
2694 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2695 params.supported_rates =
2696 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2697 params.supported_rates_len =
2698 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2699 params.listen_interval =
2700 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2701
2702 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2703 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2704 return -EINVAL;
2705
2706 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2707 params.ht_capa =
2708 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2709
2710 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2711 params.plink_action =
2712 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2713
2714 if (parse_station_flags(info, &params))
2715 return -EINVAL;
2716
2717 /* parse WME attributes if sta is WME capable */
2718 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2719 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2720 info->attrs[NL80211_ATTR_STA_WME]) {
2721 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2722 struct nlattr *nla;
2723
2724 nla = info->attrs[NL80211_ATTR_STA_WME];
2725 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2726 nl80211_sta_wme_policy);
2727 if (err)
2728 return err;
2729
2730 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2731 params.uapsd_queues =
2732 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2733 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2734 return -EINVAL;
2735
2736 if (tb[NL80211_STA_WME_MAX_SP])
2737 params.max_sp =
2738 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2739
2740 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2741 return -EINVAL;
2742
2743 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2744 }
2745
2746 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2747 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2748 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2749 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2750 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2751 return -EINVAL;
2752
2753 /*
2754 * Only managed stations can add TDLS peers, and only when the
2755 * wiphy supports external TDLS setup.
2756 */
2757 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2758 !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2759 (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2760 (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2761 return -EINVAL;
2762
2763 params.vlan = get_vlan(info, rdev);
2764 if (IS_ERR(params.vlan))
2765 return PTR_ERR(params.vlan);
2766
2767 /* validate settings */
2768 err = 0;
2769
2770 if (!rdev->ops->add_station) {
2771 err = -EOPNOTSUPP;
2772 goto out;
2773 }
2774
2775 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2776
2777 out:
2778 if (params.vlan)
2779 dev_put(params.vlan);
2780 return err;
2781 }
2782
2783 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2784 {
2785 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2786 struct net_device *dev = info->user_ptr[1];
2787 u8 *mac_addr = NULL;
2788
2789 if (info->attrs[NL80211_ATTR_MAC])
2790 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2791
2792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2793 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2794 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2795 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2796 return -EINVAL;
2797
2798 if (!rdev->ops->del_station)
2799 return -EOPNOTSUPP;
2800
2801 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2802 }
2803
2804 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2805 int flags, struct net_device *dev,
2806 u8 *dst, u8 *next_hop,
2807 struct mpath_info *pinfo)
2808 {
2809 void *hdr;
2810 struct nlattr *pinfoattr;
2811
2812 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2813 if (!hdr)
2814 return -1;
2815
2816 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2817 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2818 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2819
2820 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2821
2822 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2823 if (!pinfoattr)
2824 goto nla_put_failure;
2825 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2826 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2827 pinfo->frame_qlen);
2828 if (pinfo->filled & MPATH_INFO_SN)
2829 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2830 pinfo->sn);
2831 if (pinfo->filled & MPATH_INFO_METRIC)
2832 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2833 pinfo->metric);
2834 if (pinfo->filled & MPATH_INFO_EXPTIME)
2835 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2836 pinfo->exptime);
2837 if (pinfo->filled & MPATH_INFO_FLAGS)
2838 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2839 pinfo->flags);
2840 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2841 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2842 pinfo->discovery_timeout);
2843 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2844 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2845 pinfo->discovery_retries);
2846
2847 nla_nest_end(msg, pinfoattr);
2848
2849 return genlmsg_end(msg, hdr);
2850
2851 nla_put_failure:
2852 genlmsg_cancel(msg, hdr);
2853 return -EMSGSIZE;
2854 }
2855
2856 static int nl80211_dump_mpath(struct sk_buff *skb,
2857 struct netlink_callback *cb)
2858 {
2859 struct mpath_info pinfo;
2860 struct cfg80211_registered_device *dev;
2861 struct net_device *netdev;
2862 u8 dst[ETH_ALEN];
2863 u8 next_hop[ETH_ALEN];
2864 int path_idx = cb->args[1];
2865 int err;
2866
2867 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2868 if (err)
2869 return err;
2870
2871 if (!dev->ops->dump_mpath) {
2872 err = -EOPNOTSUPP;
2873 goto out_err;
2874 }
2875
2876 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2877 err = -EOPNOTSUPP;
2878 goto out_err;
2879 }
2880
2881 while (1) {
2882 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2883 dst, next_hop, &pinfo);
2884 if (err == -ENOENT)
2885 break;
2886 if (err)
2887 goto out_err;
2888
2889 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2890 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2891 netdev, dst, next_hop,
2892 &pinfo) < 0)
2893 goto out;
2894
2895 path_idx++;
2896 }
2897
2898
2899 out:
2900 cb->args[1] = path_idx;
2901 err = skb->len;
2902 out_err:
2903 nl80211_finish_netdev_dump(dev);
2904 return err;
2905 }
2906
2907 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2908 {
2909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2910 int err;
2911 struct net_device *dev = info->user_ptr[1];
2912 struct mpath_info pinfo;
2913 struct sk_buff *msg;
2914 u8 *dst = NULL;
2915 u8 next_hop[ETH_ALEN];
2916
2917 memset(&pinfo, 0, sizeof(pinfo));
2918
2919 if (!info->attrs[NL80211_ATTR_MAC])
2920 return -EINVAL;
2921
2922 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2923
2924 if (!rdev->ops->get_mpath)
2925 return -EOPNOTSUPP;
2926
2927 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2928 return -EOPNOTSUPP;
2929
2930 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2931 if (err)
2932 return err;
2933
2934 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2935 if (!msg)
2936 return -ENOMEM;
2937
2938 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2939 dev, dst, next_hop, &pinfo) < 0) {
2940 nlmsg_free(msg);
2941 return -ENOBUFS;
2942 }
2943
2944 return genlmsg_reply(msg, info);
2945 }
2946
2947 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2948 {
2949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2950 struct net_device *dev = info->user_ptr[1];
2951 u8 *dst = NULL;
2952 u8 *next_hop = NULL;
2953
2954 if (!info->attrs[NL80211_ATTR_MAC])
2955 return -EINVAL;
2956
2957 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2958 return -EINVAL;
2959
2960 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2961 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2962
2963 if (!rdev->ops->change_mpath)
2964 return -EOPNOTSUPP;
2965
2966 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2967 return -EOPNOTSUPP;
2968
2969 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2970 }
2971
2972 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2973 {
2974 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2975 struct net_device *dev = info->user_ptr[1];
2976 u8 *dst = NULL;
2977 u8 *next_hop = NULL;
2978
2979 if (!info->attrs[NL80211_ATTR_MAC])
2980 return -EINVAL;
2981
2982 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2983 return -EINVAL;
2984
2985 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2986 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2987
2988 if (!rdev->ops->add_mpath)
2989 return -EOPNOTSUPP;
2990
2991 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2992 return -EOPNOTSUPP;
2993
2994 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2995 }
2996
2997 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2998 {
2999 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3000 struct net_device *dev = info->user_ptr[1];
3001 u8 *dst = NULL;
3002
3003 if (info->attrs[NL80211_ATTR_MAC])
3004 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3005
3006 if (!rdev->ops->del_mpath)
3007 return -EOPNOTSUPP;
3008
3009 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3010 }
3011
3012 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3013 {
3014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3015 struct net_device *dev = info->user_ptr[1];
3016 struct bss_parameters params;
3017
3018 memset(&params, 0, sizeof(params));
3019 /* default to not changing parameters */
3020 params.use_cts_prot = -1;
3021 params.use_short_preamble = -1;
3022 params.use_short_slot_time = -1;
3023 params.ap_isolate = -1;
3024 params.ht_opmode = -1;
3025
3026 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3027 params.use_cts_prot =
3028 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3029 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3030 params.use_short_preamble =
3031 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3032 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3033 params.use_short_slot_time =
3034 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3035 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3036 params.basic_rates =
3037 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3038 params.basic_rates_len =
3039 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3040 }
3041 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3042 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3043 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3044 params.ht_opmode =
3045 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3046
3047 if (!rdev->ops->change_bss)
3048 return -EOPNOTSUPP;
3049
3050 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3051 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3052 return -EOPNOTSUPP;
3053
3054 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3055 }
3056
3057 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3058 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3059 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3060 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3061 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3062 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3063 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3064 };
3065
3066 static int parse_reg_rule(struct nlattr *tb[],
3067 struct ieee80211_reg_rule *reg_rule)
3068 {
3069 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3070 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3071
3072 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3073 return -EINVAL;
3074 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3075 return -EINVAL;
3076 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3077 return -EINVAL;
3078 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3079 return -EINVAL;
3080 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3081 return -EINVAL;
3082
3083 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3084
3085 freq_range->start_freq_khz =
3086 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3087 freq_range->end_freq_khz =
3088 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3089 freq_range->max_bandwidth_khz =
3090 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3091
3092 power_rule->max_eirp =
3093 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3094
3095 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3096 power_rule->max_antenna_gain =
3097 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3098
3099 return 0;
3100 }
3101
3102 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3103 {
3104 int r;
3105 char *data = NULL;
3106
3107 /*
3108 * You should only get this when cfg80211 hasn't yet initialized
3109 * completely when built-in to the kernel right between the time
3110 * window between nl80211_init() and regulatory_init(), if that is
3111 * even possible.
3112 */
3113 mutex_lock(&cfg80211_mutex);
3114 if (unlikely(!cfg80211_regdomain)) {
3115 mutex_unlock(&cfg80211_mutex);
3116 return -EINPROGRESS;
3117 }
3118 mutex_unlock(&cfg80211_mutex);
3119
3120 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3121 return -EINVAL;
3122
3123 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3124
3125 r = regulatory_hint_user(data);
3126
3127 return r;
3128 }
3129
3130 static int nl80211_get_mesh_config(struct sk_buff *skb,
3131 struct genl_info *info)
3132 {
3133 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3134 struct net_device *dev = info->user_ptr[1];
3135 struct wireless_dev *wdev = dev->ieee80211_ptr;
3136 struct mesh_config cur_params;
3137 int err = 0;
3138 void *hdr;
3139 struct nlattr *pinfoattr;
3140 struct sk_buff *msg;
3141
3142 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3143 return -EOPNOTSUPP;
3144
3145 if (!rdev->ops->get_mesh_config)
3146 return -EOPNOTSUPP;
3147
3148 wdev_lock(wdev);
3149 /* If not connected, get default parameters */
3150 if (!wdev->mesh_id_len)
3151 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3152 else
3153 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3154 &cur_params);
3155 wdev_unlock(wdev);
3156
3157 if (err)
3158 return err;
3159
3160 /* Draw up a netlink message to send back */
3161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3162 if (!msg)
3163 return -ENOMEM;
3164 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3165 NL80211_CMD_GET_MESH_CONFIG);
3166 if (!hdr)
3167 goto out;
3168 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3169 if (!pinfoattr)
3170 goto nla_put_failure;
3171 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3172 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3173 cur_params.dot11MeshRetryTimeout);
3174 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3175 cur_params.dot11MeshConfirmTimeout);
3176 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3177 cur_params.dot11MeshHoldingTimeout);
3178 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3179 cur_params.dot11MeshMaxPeerLinks);
3180 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3181 cur_params.dot11MeshMaxRetries);
3182 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3183 cur_params.dot11MeshTTL);
3184 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3185 cur_params.element_ttl);
3186 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3187 cur_params.auto_open_plinks);
3188 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3189 cur_params.dot11MeshHWMPmaxPREQretries);
3190 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3191 cur_params.path_refresh_time);
3192 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3193 cur_params.min_discovery_timeout);
3194 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3195 cur_params.dot11MeshHWMPactivePathTimeout);
3196 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3197 cur_params.dot11MeshHWMPpreqMinInterval);
3198 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3199 cur_params.dot11MeshHWMPperrMinInterval);
3200 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3201 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3202 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3203 cur_params.dot11MeshHWMPRootMode);
3204 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3205 cur_params.dot11MeshHWMPRannInterval);
3206 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3207 cur_params.dot11MeshGateAnnouncementProtocol);
3208 nla_nest_end(msg, pinfoattr);
3209 genlmsg_end(msg, hdr);
3210 return genlmsg_reply(msg, info);
3211
3212 nla_put_failure:
3213 genlmsg_cancel(msg, hdr);
3214 out:
3215 nlmsg_free(msg);
3216 return -ENOBUFS;
3217 }
3218
3219 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3220 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3221 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3222 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3223 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3224 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3225 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3226 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3227 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3228
3229 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3230 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3231 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3232 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3233 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3234 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3235 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3236 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3237 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3238 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3239 };
3240
3241 static const struct nla_policy
3242 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3243 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3244 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3245 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3246 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3247 .len = IEEE80211_MAX_DATA_LEN },
3248 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3249 };
3250
3251 static int nl80211_parse_mesh_config(struct genl_info *info,
3252 struct mesh_config *cfg,
3253 u32 *mask_out)
3254 {
3255 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3256 u32 mask = 0;
3257
3258 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3259 do {\
3260 if (table[attr_num]) {\
3261 cfg->param = nla_fn(table[attr_num]); \
3262 mask |= (1 << (attr_num - 1)); \
3263 } \
3264 } while (0);\
3265
3266
3267 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3268 return -EINVAL;
3269 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3270 info->attrs[NL80211_ATTR_MESH_CONFIG],
3271 nl80211_meshconf_params_policy))
3272 return -EINVAL;
3273
3274 /* This makes sure that there aren't more than 32 mesh config
3275 * parameters (otherwise our bitfield scheme would not work.) */
3276 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3277
3278 /* Fill in the params struct */
3279 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3280 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3282 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3283 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3284 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3285 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3286 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3287 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3288 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3290 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3291 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3292 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3293 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3294 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3295 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3296 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3297 nla_get_u8);
3298 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3299 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3300 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3301 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3302 nla_get_u16);
3303 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3304 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3305 nla_get_u32);
3306 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3307 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3308 nla_get_u16);
3309 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3310 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3311 nla_get_u16);
3312 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3313 dot11MeshHWMPnetDiameterTraversalTime,
3314 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3315 nla_get_u16);
3316 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3317 dot11MeshHWMPRootMode, mask,
3318 NL80211_MESHCONF_HWMP_ROOTMODE,
3319 nla_get_u8);
3320 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3321 dot11MeshHWMPRannInterval, mask,
3322 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3323 nla_get_u16);
3324 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3325 dot11MeshGateAnnouncementProtocol, mask,
3326 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3327 nla_get_u8);
3328 if (mask_out)
3329 *mask_out = mask;
3330
3331 return 0;
3332
3333 #undef FILL_IN_MESH_PARAM_IF_SET
3334 }
3335
3336 static int nl80211_parse_mesh_setup(struct genl_info *info,
3337 struct mesh_setup *setup)
3338 {
3339 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3340
3341 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3342 return -EINVAL;
3343 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3344 info->attrs[NL80211_ATTR_MESH_SETUP],
3345 nl80211_mesh_setup_params_policy))
3346 return -EINVAL;
3347
3348 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3349 setup->path_sel_proto =
3350 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3351 IEEE80211_PATH_PROTOCOL_VENDOR :
3352 IEEE80211_PATH_PROTOCOL_HWMP;
3353
3354 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3355 setup->path_metric =
3356 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3357 IEEE80211_PATH_METRIC_VENDOR :
3358 IEEE80211_PATH_METRIC_AIRTIME;
3359
3360
3361 if (tb[NL80211_MESH_SETUP_IE]) {
3362 struct nlattr *ieattr =
3363 tb[NL80211_MESH_SETUP_IE];
3364 if (!is_valid_ie_attr(ieattr))
3365 return -EINVAL;
3366 setup->ie = nla_data(ieattr);
3367 setup->ie_len = nla_len(ieattr);
3368 }
3369 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3370 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3371
3372 return 0;
3373 }
3374
3375 static int nl80211_update_mesh_config(struct sk_buff *skb,
3376 struct genl_info *info)
3377 {
3378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3379 struct net_device *dev = info->user_ptr[1];
3380 struct wireless_dev *wdev = dev->ieee80211_ptr;
3381 struct mesh_config cfg;
3382 u32 mask;
3383 int err;
3384
3385 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3386 return -EOPNOTSUPP;
3387
3388 if (!rdev->ops->update_mesh_config)
3389 return -EOPNOTSUPP;
3390
3391 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3392 if (err)
3393 return err;
3394
3395 wdev_lock(wdev);
3396 if (!wdev->mesh_id_len)
3397 err = -ENOLINK;
3398
3399 if (!err)
3400 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3401 mask, &cfg);
3402
3403 wdev_unlock(wdev);
3404
3405 return err;
3406 }
3407
3408 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3409 {
3410 struct sk_buff *msg;
3411 void *hdr = NULL;
3412 struct nlattr *nl_reg_rules;
3413 unsigned int i;
3414 int err = -EINVAL;
3415
3416 mutex_lock(&cfg80211_mutex);
3417
3418 if (!cfg80211_regdomain)
3419 goto out;
3420
3421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3422 if (!msg) {
3423 err = -ENOBUFS;
3424 goto out;
3425 }
3426
3427 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3428 NL80211_CMD_GET_REG);
3429 if (!hdr)
3430 goto put_failure;
3431
3432 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3433 cfg80211_regdomain->alpha2);
3434 if (cfg80211_regdomain->dfs_region)
3435 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3436 cfg80211_regdomain->dfs_region);
3437
3438 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3439 if (!nl_reg_rules)
3440 goto nla_put_failure;
3441
3442 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3443 struct nlattr *nl_reg_rule;
3444 const struct ieee80211_reg_rule *reg_rule;
3445 const struct ieee80211_freq_range *freq_range;
3446 const struct ieee80211_power_rule *power_rule;
3447
3448 reg_rule = &cfg80211_regdomain->reg_rules[i];
3449 freq_range = &reg_rule->freq_range;
3450 power_rule = &reg_rule->power_rule;
3451
3452 nl_reg_rule = nla_nest_start(msg, i);
3453 if (!nl_reg_rule)
3454 goto nla_put_failure;
3455
3456 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3457 reg_rule->flags);
3458 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3459 freq_range->start_freq_khz);
3460 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3461 freq_range->end_freq_khz);
3462 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3463 freq_range->max_bandwidth_khz);
3464 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3465 power_rule->max_antenna_gain);
3466 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3467 power_rule->max_eirp);
3468
3469 nla_nest_end(msg, nl_reg_rule);
3470 }
3471
3472 nla_nest_end(msg, nl_reg_rules);
3473
3474 genlmsg_end(msg, hdr);
3475 err = genlmsg_reply(msg, info);
3476 goto out;
3477
3478 nla_put_failure:
3479 genlmsg_cancel(msg, hdr);
3480 put_failure:
3481 nlmsg_free(msg);
3482 err = -EMSGSIZE;
3483 out:
3484 mutex_unlock(&cfg80211_mutex);
3485 return err;
3486 }
3487
3488 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3489 {
3490 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3491 struct nlattr *nl_reg_rule;
3492 char *alpha2 = NULL;
3493 int rem_reg_rules = 0, r = 0;
3494 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3495 u8 dfs_region = 0;
3496 struct ieee80211_regdomain *rd = NULL;
3497
3498 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3499 return -EINVAL;
3500
3501 if (!info->attrs[NL80211_ATTR_REG_RULES])
3502 return -EINVAL;
3503
3504 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3505
3506 if (info->attrs[NL80211_ATTR_DFS_REGION])
3507 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3508
3509 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3510 rem_reg_rules) {
3511 num_rules++;
3512 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3513 return -EINVAL;
3514 }
3515
3516 mutex_lock(&cfg80211_mutex);
3517
3518 if (!reg_is_valid_request(alpha2)) {
3519 r = -EINVAL;
3520 goto bad_reg;
3521 }
3522
3523 size_of_regd = sizeof(struct ieee80211_regdomain) +
3524 (num_rules * sizeof(struct ieee80211_reg_rule));
3525
3526 rd = kzalloc(size_of_regd, GFP_KERNEL);
3527 if (!rd) {
3528 r = -ENOMEM;
3529 goto bad_reg;
3530 }
3531
3532 rd->n_reg_rules = num_rules;
3533 rd->alpha2[0] = alpha2[0];
3534 rd->alpha2[1] = alpha2[1];
3535
3536 /*
3537 * Disable DFS master mode if the DFS region was
3538 * not supported or known on this kernel.
3539 */
3540 if (reg_supported_dfs_region(dfs_region))
3541 rd->dfs_region = dfs_region;
3542
3543 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3544 rem_reg_rules) {
3545 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3546 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3547 reg_rule_policy);
3548 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3549 if (r)
3550 goto bad_reg;
3551
3552 rule_idx++;
3553
3554 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3555 r = -EINVAL;
3556 goto bad_reg;
3557 }
3558 }
3559
3560 BUG_ON(rule_idx != num_rules);
3561
3562 r = set_regdom(rd);
3563
3564 mutex_unlock(&cfg80211_mutex);
3565
3566 return r;
3567
3568 bad_reg:
3569 mutex_unlock(&cfg80211_mutex);
3570 kfree(rd);
3571 return r;
3572 }
3573
3574 static int validate_scan_freqs(struct nlattr *freqs)
3575 {
3576 struct nlattr *attr1, *attr2;
3577 int n_channels = 0, tmp1, tmp2;
3578
3579 nla_for_each_nested(attr1, freqs, tmp1) {
3580 n_channels++;
3581 /*
3582 * Some hardware has a limited channel list for
3583 * scanning, and it is pretty much nonsensical
3584 * to scan for a channel twice, so disallow that
3585 * and don't require drivers to check that the
3586 * channel list they get isn't longer than what
3587 * they can scan, as long as they can scan all
3588 * the channels they registered at once.
3589 */
3590 nla_for_each_nested(attr2, freqs, tmp2)
3591 if (attr1 != attr2 &&
3592 nla_get_u32(attr1) == nla_get_u32(attr2))
3593 return 0;
3594 }
3595
3596 return n_channels;
3597 }
3598
3599 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3600 {
3601 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3602 struct net_device *dev = info->user_ptr[1];
3603 struct cfg80211_scan_request *request;
3604 struct nlattr *attr;
3605 struct wiphy *wiphy;
3606 int err, tmp, n_ssids = 0, n_channels, i;
3607 size_t ie_len;
3608
3609 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3610 return -EINVAL;
3611
3612 wiphy = &rdev->wiphy;
3613
3614 if (!rdev->ops->scan)
3615 return -EOPNOTSUPP;
3616
3617 if (rdev->scan_req)
3618 return -EBUSY;
3619
3620 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3621 n_channels = validate_scan_freqs(
3622 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3623 if (!n_channels)
3624 return -EINVAL;
3625 } else {
3626 enum ieee80211_band band;
3627 n_channels = 0;
3628
3629 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3630 if (wiphy->bands[band])
3631 n_channels += wiphy->bands[band]->n_channels;
3632 }
3633
3634 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3635 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3636 n_ssids++;
3637
3638 if (n_ssids > wiphy->max_scan_ssids)
3639 return -EINVAL;
3640
3641 if (info->attrs[NL80211_ATTR_IE])
3642 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3643 else
3644 ie_len = 0;
3645
3646 if (ie_len > wiphy->max_scan_ie_len)
3647 return -EINVAL;
3648
3649 request = kzalloc(sizeof(*request)
3650 + sizeof(*request->ssids) * n_ssids
3651 + sizeof(*request->channels) * n_channels
3652 + ie_len, GFP_KERNEL);
3653 if (!request)
3654 return -ENOMEM;
3655
3656 if (n_ssids)
3657 request->ssids = (void *)&request->channels[n_channels];
3658 request->n_ssids = n_ssids;
3659 if (ie_len) {
3660 if (request->ssids)
3661 request->ie = (void *)(request->ssids + n_ssids);
3662 else
3663 request->ie = (void *)(request->channels + n_channels);
3664 }
3665
3666 i = 0;
3667 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3668 /* user specified, bail out if channel not found */
3669 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3670 struct ieee80211_channel *chan;
3671
3672 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3673
3674 if (!chan) {
3675 err = -EINVAL;
3676 goto out_free;
3677 }
3678
3679 /* ignore disabled channels */
3680 if (chan->flags & IEEE80211_CHAN_DISABLED)
3681 continue;
3682
3683 request->channels[i] = chan;
3684 i++;
3685 }
3686 } else {
3687 enum ieee80211_band band;
3688
3689 /* all channels */
3690 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3691 int j;
3692 if (!wiphy->bands[band])
3693 continue;
3694 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3695 struct ieee80211_channel *chan;
3696
3697 chan = &wiphy->bands[band]->channels[j];
3698
3699 if (chan->flags & IEEE80211_CHAN_DISABLED)
3700 continue;
3701
3702 request->channels[i] = chan;
3703 i++;
3704 }
3705 }
3706 }
3707
3708 if (!i) {
3709 err = -EINVAL;
3710 goto out_free;
3711 }
3712
3713 request->n_channels = i;
3714
3715 i = 0;
3716 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3717 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3718 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3719 err = -EINVAL;
3720 goto out_free;
3721 }
3722 request->ssids[i].ssid_len = nla_len(attr);
3723 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3724 i++;
3725 }
3726 }
3727
3728 if (info->attrs[NL80211_ATTR_IE]) {
3729 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3730 memcpy((void *)request->ie,
3731 nla_data(info->attrs[NL80211_ATTR_IE]),
3732 request->ie_len);
3733 }
3734
3735 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3736 if (wiphy->bands[i])
3737 request->rates[i] =
3738 (1 << wiphy->bands[i]->n_bitrates) - 1;
3739
3740 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3741 nla_for_each_nested(attr,
3742 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3743 tmp) {
3744 enum ieee80211_band band = nla_type(attr);
3745
3746 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3747 err = -EINVAL;
3748 goto out_free;
3749 }
3750 err = ieee80211_get_ratemask(wiphy->bands[band],
3751 nla_data(attr),
3752 nla_len(attr),
3753 &request->rates[band]);
3754 if (err)
3755 goto out_free;
3756 }
3757 }
3758
3759 request->no_cck =
3760 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3761
3762 request->dev = dev;
3763 request->wiphy = &rdev->wiphy;
3764
3765 rdev->scan_req = request;
3766 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3767
3768 if (!err) {
3769 nl80211_send_scan_start(rdev, dev);
3770 dev_hold(dev);
3771 } else {
3772 out_free:
3773 rdev->scan_req = NULL;
3774 kfree(request);
3775 }
3776
3777 return err;
3778 }
3779
3780 static int nl80211_start_sched_scan(struct sk_buff *skb,
3781 struct genl_info *info)
3782 {
3783 struct cfg80211_sched_scan_request *request;
3784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3785 struct net_device *dev = info->user_ptr[1];
3786 struct nlattr *attr;
3787 struct wiphy *wiphy;
3788 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3789 u32 interval;
3790 enum ieee80211_band band;
3791 size_t ie_len;
3792 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3793
3794 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3795 !rdev->ops->sched_scan_start)
3796 return -EOPNOTSUPP;
3797
3798 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3799 return -EINVAL;
3800
3801 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3802 return -EINVAL;
3803
3804 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3805 if (interval == 0)
3806 return -EINVAL;
3807
3808 wiphy = &rdev->wiphy;
3809
3810 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3811 n_channels = validate_scan_freqs(
3812 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3813 if (!n_channels)
3814 return -EINVAL;
3815 } else {
3816 n_channels = 0;
3817
3818 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3819 if (wiphy->bands[band])
3820 n_channels += wiphy->bands[band]->n_channels;
3821 }
3822
3823 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3824 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3825 tmp)
3826 n_ssids++;
3827
3828 if (n_ssids > wiphy->max_sched_scan_ssids)
3829 return -EINVAL;
3830
3831 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3832 nla_for_each_nested(attr,
3833 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3834 tmp)
3835 n_match_sets++;
3836
3837 if (n_match_sets > wiphy->max_match_sets)
3838 return -EINVAL;
3839
3840 if (info->attrs[NL80211_ATTR_IE])
3841 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3842 else
3843 ie_len = 0;
3844
3845 if (ie_len > wiphy->max_sched_scan_ie_len)
3846 return -EINVAL;
3847
3848 mutex_lock(&rdev->sched_scan_mtx);
3849
3850 if (rdev->sched_scan_req) {
3851 err = -EINPROGRESS;
3852 goto out;
3853 }
3854
3855 request = kzalloc(sizeof(*request)
3856 + sizeof(*request->ssids) * n_ssids
3857 + sizeof(*request->match_sets) * n_match_sets
3858 + sizeof(*request->channels) * n_channels
3859 + ie_len, GFP_KERNEL);
3860 if (!request) {
3861 err = -ENOMEM;
3862 goto out;
3863 }
3864
3865 if (n_ssids)
3866 request->ssids = (void *)&request->channels[n_channels];
3867 request->n_ssids = n_ssids;
3868 if (ie_len) {
3869 if (request->ssids)
3870 request->ie = (void *)(request->ssids + n_ssids);
3871 else
3872 request->ie = (void *)(request->channels + n_channels);
3873 }
3874
3875 if (n_match_sets) {
3876 if (request->ie)
3877 request->match_sets = (void *)(request->ie + ie_len);
3878 else if (request->ssids)
3879 request->match_sets =
3880 (void *)(request->ssids + n_ssids);
3881 else
3882 request->match_sets =
3883 (void *)(request->channels + n_channels);
3884 }
3885 request->n_match_sets = n_match_sets;
3886
3887 i = 0;
3888 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3889 /* user specified, bail out if channel not found */
3890 nla_for_each_nested(attr,
3891 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3892 tmp) {
3893 struct ieee80211_channel *chan;
3894
3895 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3896
3897 if (!chan) {
3898 err = -EINVAL;
3899 goto out_free;
3900 }
3901
3902 /* ignore disabled channels */
3903 if (chan->flags & IEEE80211_CHAN_DISABLED)
3904 continue;
3905
3906 request->channels[i] = chan;
3907 i++;
3908 }
3909 } else {
3910 /* all channels */
3911 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3912 int j;
3913 if (!wiphy->bands[band])
3914 continue;
3915 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3916 struct ieee80211_channel *chan;
3917
3918 chan = &wiphy->bands[band]->channels[j];
3919
3920 if (chan->flags & IEEE80211_CHAN_DISABLED)
3921 continue;
3922
3923 request->channels[i] = chan;
3924 i++;
3925 }
3926 }
3927 }
3928
3929 if (!i) {
3930 err = -EINVAL;
3931 goto out_free;
3932 }
3933
3934 request->n_channels = i;
3935
3936 i = 0;
3937 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3938 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3939 tmp) {
3940 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3941 err = -EINVAL;
3942 goto out_free;
3943 }
3944 request->ssids[i].ssid_len = nla_len(attr);
3945 memcpy(request->ssids[i].ssid, nla_data(attr),
3946 nla_len(attr));
3947 i++;
3948 }
3949 }
3950
3951 i = 0;
3952 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3953 nla_for_each_nested(attr,
3954 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3955 tmp) {
3956 struct nlattr *ssid;
3957
3958 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3959 nla_data(attr), nla_len(attr),
3960 nl80211_match_policy);
3961 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3962 if (ssid) {
3963 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3964 err = -EINVAL;
3965 goto out_free;
3966 }
3967 memcpy(request->match_sets[i].ssid.ssid,
3968 nla_data(ssid), nla_len(ssid));
3969 request->match_sets[i].ssid.ssid_len =
3970 nla_len(ssid);
3971 }
3972 i++;
3973 }
3974 }
3975
3976 if (info->attrs[NL80211_ATTR_IE]) {
3977 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3978 memcpy((void *)request->ie,
3979 nla_data(info->attrs[NL80211_ATTR_IE]),
3980 request->ie_len);
3981 }
3982
3983 request->dev = dev;
3984 request->wiphy = &rdev->wiphy;
3985 request->interval = interval;
3986
3987 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3988 if (!err) {
3989 rdev->sched_scan_req = request;
3990 nl80211_send_sched_scan(rdev, dev,
3991 NL80211_CMD_START_SCHED_SCAN);
3992 goto out;
3993 }
3994
3995 out_free:
3996 kfree(request);
3997 out:
3998 mutex_unlock(&rdev->sched_scan_mtx);
3999 return err;
4000 }
4001
4002 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4003 struct genl_info *info)
4004 {
4005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4006 int err;
4007
4008 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4009 !rdev->ops->sched_scan_stop)
4010 return -EOPNOTSUPP;
4011
4012 mutex_lock(&rdev->sched_scan_mtx);
4013 err = __cfg80211_stop_sched_scan(rdev, false);
4014 mutex_unlock(&rdev->sched_scan_mtx);
4015
4016 return err;
4017 }
4018
4019 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4020 u32 seq, int flags,
4021 struct cfg80211_registered_device *rdev,
4022 struct wireless_dev *wdev,
4023 struct cfg80211_internal_bss *intbss)
4024 {
4025 struct cfg80211_bss *res = &intbss->pub;
4026 void *hdr;
4027 struct nlattr *bss;
4028 int i;
4029
4030 ASSERT_WDEV_LOCK(wdev);
4031
4032 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4033 NL80211_CMD_NEW_SCAN_RESULTS);
4034 if (!hdr)
4035 return -1;
4036
4037 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4038
4039 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4040 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4041
4042 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4043 if (!bss)
4044 goto nla_put_failure;
4045 if (!is_zero_ether_addr(res->bssid))
4046 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4047 if (res->information_elements && res->len_information_elements)
4048 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4049 res->len_information_elements,
4050 res->information_elements);
4051 if (res->beacon_ies && res->len_beacon_ies &&
4052 res->beacon_ies != res->information_elements)
4053 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4054 res->len_beacon_ies, res->beacon_ies);
4055 if (res->tsf)
4056 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4057 if (res->beacon_interval)
4058 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4059 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4060 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4061 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4062 jiffies_to_msecs(jiffies - intbss->ts));
4063
4064 switch (rdev->wiphy.signal_type) {
4065 case CFG80211_SIGNAL_TYPE_MBM:
4066 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4067 break;
4068 case CFG80211_SIGNAL_TYPE_UNSPEC:
4069 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4070 break;
4071 default:
4072 break;
4073 }
4074
4075 switch (wdev->iftype) {
4076 case NL80211_IFTYPE_P2P_CLIENT:
4077 case NL80211_IFTYPE_STATION:
4078 if (intbss == wdev->current_bss)
4079 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4080 NL80211_BSS_STATUS_ASSOCIATED);
4081 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
4082 if (intbss != wdev->auth_bsses[i])
4083 continue;
4084 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4085 NL80211_BSS_STATUS_AUTHENTICATED);
4086 break;
4087 }
4088 break;
4089 case NL80211_IFTYPE_ADHOC:
4090 if (intbss == wdev->current_bss)
4091 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4092 NL80211_BSS_STATUS_IBSS_JOINED);
4093 break;
4094 default:
4095 break;
4096 }
4097
4098 nla_nest_end(msg, bss);
4099
4100 return genlmsg_end(msg, hdr);
4101
4102 nla_put_failure:
4103 genlmsg_cancel(msg, hdr);
4104 return -EMSGSIZE;
4105 }
4106
4107 static int nl80211_dump_scan(struct sk_buff *skb,
4108 struct netlink_callback *cb)
4109 {
4110 struct cfg80211_registered_device *rdev;
4111 struct net_device *dev;
4112 struct cfg80211_internal_bss *scan;
4113 struct wireless_dev *wdev;
4114 int start = cb->args[1], idx = 0;
4115 int err;
4116
4117 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4118 if (err)
4119 return err;
4120
4121 wdev = dev->ieee80211_ptr;
4122
4123 wdev_lock(wdev);
4124 spin_lock_bh(&rdev->bss_lock);
4125 cfg80211_bss_expire(rdev);
4126
4127 cb->seq = rdev->bss_generation;
4128
4129 list_for_each_entry(scan, &rdev->bss_list, list) {
4130 if (++idx <= start)
4131 continue;
4132 if (nl80211_send_bss(skb, cb,
4133 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4134 rdev, wdev, scan) < 0) {
4135 idx--;
4136 break;
4137 }
4138 }
4139
4140 spin_unlock_bh(&rdev->bss_lock);
4141 wdev_unlock(wdev);
4142
4143 cb->args[1] = idx;
4144 nl80211_finish_netdev_dump(rdev);
4145
4146 return skb->len;
4147 }
4148
4149 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4150 int flags, struct net_device *dev,
4151 struct survey_info *survey)
4152 {
4153 void *hdr;
4154 struct nlattr *infoattr;
4155
4156 hdr = nl80211hdr_put(msg, pid, seq, flags,
4157 NL80211_CMD_NEW_SURVEY_RESULTS);
4158 if (!hdr)
4159 return -ENOMEM;
4160
4161 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4162
4163 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4164 if (!infoattr)
4165 goto nla_put_failure;
4166
4167 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4168 survey->channel->center_freq);
4169 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4170 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4171 survey->noise);
4172 if (survey->filled & SURVEY_INFO_IN_USE)
4173 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4174 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4175 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4176 survey->channel_time);
4177 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4178 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4179 survey->channel_time_busy);
4180 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4181 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4182 survey->channel_time_ext_busy);
4183 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4184 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4185 survey->channel_time_rx);
4186 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4187 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4188 survey->channel_time_tx);
4189
4190 nla_nest_end(msg, infoattr);
4191
4192 return genlmsg_end(msg, hdr);
4193
4194 nla_put_failure:
4195 genlmsg_cancel(msg, hdr);
4196 return -EMSGSIZE;
4197 }
4198
4199 static int nl80211_dump_survey(struct sk_buff *skb,
4200 struct netlink_callback *cb)
4201 {
4202 struct survey_info survey;
4203 struct cfg80211_registered_device *dev;
4204 struct net_device *netdev;
4205 int survey_idx = cb->args[1];
4206 int res;
4207
4208 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4209 if (res)
4210 return res;
4211
4212 if (!dev->ops->dump_survey) {
4213 res = -EOPNOTSUPP;
4214 goto out_err;
4215 }
4216
4217 while (1) {
4218 struct ieee80211_channel *chan;
4219
4220 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4221 &survey);
4222 if (res == -ENOENT)
4223 break;
4224 if (res)
4225 goto out_err;
4226
4227 /* Survey without a channel doesn't make sense */
4228 if (!survey.channel) {
4229 res = -EINVAL;
4230 goto out;
4231 }
4232
4233 chan = ieee80211_get_channel(&dev->wiphy,
4234 survey.channel->center_freq);
4235 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4236 survey_idx++;
4237 continue;
4238 }
4239
4240 if (nl80211_send_survey(skb,
4241 NETLINK_CB(cb->skb).pid,
4242 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4243 netdev,
4244 &survey) < 0)
4245 goto out;
4246 survey_idx++;
4247 }
4248
4249 out:
4250 cb->args[1] = survey_idx;
4251 res = skb->len;
4252 out_err:
4253 nl80211_finish_netdev_dump(dev);
4254 return res;
4255 }
4256
4257 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4258 {
4259 return auth_type <= NL80211_AUTHTYPE_MAX;
4260 }
4261
4262 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4263 {
4264 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4265 NL80211_WPA_VERSION_2));
4266 }
4267
4268 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4269 {
4270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4271 struct net_device *dev = info->user_ptr[1];
4272 struct ieee80211_channel *chan;
4273 const u8 *bssid, *ssid, *ie = NULL;
4274 int err, ssid_len, ie_len = 0;
4275 enum nl80211_auth_type auth_type;
4276 struct key_parse key;
4277 bool local_state_change;
4278
4279 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4280 return -EINVAL;
4281
4282 if (!info->attrs[NL80211_ATTR_MAC])
4283 return -EINVAL;
4284
4285 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4286 return -EINVAL;
4287
4288 if (!info->attrs[NL80211_ATTR_SSID])
4289 return -EINVAL;
4290
4291 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4292 return -EINVAL;
4293
4294 err = nl80211_parse_key(info, &key);
4295 if (err)
4296 return err;
4297
4298 if (key.idx >= 0) {
4299 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4300 return -EINVAL;
4301 if (!key.p.key || !key.p.key_len)
4302 return -EINVAL;
4303 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4304 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4305 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4306 key.p.key_len != WLAN_KEY_LEN_WEP104))
4307 return -EINVAL;
4308 if (key.idx > 4)
4309 return -EINVAL;
4310 } else {
4311 key.p.key_len = 0;
4312 key.p.key = NULL;
4313 }
4314
4315 if (key.idx >= 0) {
4316 int i;
4317 bool ok = false;
4318 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4319 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4320 ok = true;
4321 break;
4322 }
4323 }
4324 if (!ok)
4325 return -EINVAL;
4326 }
4327
4328 if (!rdev->ops->auth)
4329 return -EOPNOTSUPP;
4330
4331 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4332 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4333 return -EOPNOTSUPP;
4334
4335 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4336 chan = ieee80211_get_channel(&rdev->wiphy,
4337 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4338 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4339 return -EINVAL;
4340
4341 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4342 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4343
4344 if (info->attrs[NL80211_ATTR_IE]) {
4345 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4346 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4347 }
4348
4349 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4350 if (!nl80211_valid_auth_type(auth_type))
4351 return -EINVAL;
4352
4353 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4354
4355 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4356 ssid, ssid_len, ie, ie_len,
4357 key.p.key, key.p.key_len, key.idx,
4358 local_state_change);
4359 }
4360
4361 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4362 struct genl_info *info,
4363 struct cfg80211_crypto_settings *settings,
4364 int cipher_limit)
4365 {
4366 memset(settings, 0, sizeof(*settings));
4367
4368 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4369
4370 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4371 u16 proto;
4372 proto = nla_get_u16(
4373 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4374 settings->control_port_ethertype = cpu_to_be16(proto);
4375 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4376 proto != ETH_P_PAE)
4377 return -EINVAL;
4378 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4379 settings->control_port_no_encrypt = true;
4380 } else
4381 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4382
4383 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4384 void *data;
4385 int len, i;
4386
4387 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4388 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4389 settings->n_ciphers_pairwise = len / sizeof(u32);
4390
4391 if (len % sizeof(u32))
4392 return -EINVAL;
4393
4394 if (settings->n_ciphers_pairwise > cipher_limit)
4395 return -EINVAL;
4396
4397 memcpy(settings->ciphers_pairwise, data, len);
4398
4399 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4400 if (!cfg80211_supported_cipher_suite(
4401 &rdev->wiphy,
4402 settings->ciphers_pairwise[i]))
4403 return -EINVAL;
4404 }
4405
4406 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4407 settings->cipher_group =
4408 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4409 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4410 settings->cipher_group))
4411 return -EINVAL;
4412 }
4413
4414 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4415 settings->wpa_versions =
4416 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4417 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4418 return -EINVAL;
4419 }
4420
4421 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4422 void *data;
4423 int len;
4424
4425 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4426 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4427 settings->n_akm_suites = len / sizeof(u32);
4428
4429 if (len % sizeof(u32))
4430 return -EINVAL;
4431
4432 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4433 return -EINVAL;
4434
4435 memcpy(settings->akm_suites, data, len);
4436 }
4437
4438 return 0;
4439 }
4440
4441 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4442 {
4443 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4444 struct net_device *dev = info->user_ptr[1];
4445 struct cfg80211_crypto_settings crypto;
4446 struct ieee80211_channel *chan;
4447 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4448 int err, ssid_len, ie_len = 0;
4449 bool use_mfp = false;
4450 u32 flags = 0;
4451 struct ieee80211_ht_cap *ht_capa = NULL;
4452 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4453
4454 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4455 return -EINVAL;
4456
4457 if (!info->attrs[NL80211_ATTR_MAC] ||
4458 !info->attrs[NL80211_ATTR_SSID] ||
4459 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4460 return -EINVAL;
4461
4462 if (!rdev->ops->assoc)
4463 return -EOPNOTSUPP;
4464
4465 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4466 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4467 return -EOPNOTSUPP;
4468
4469 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4470
4471 chan = ieee80211_get_channel(&rdev->wiphy,
4472 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4473 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4474 return -EINVAL;
4475
4476 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4477 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4478
4479 if (info->attrs[NL80211_ATTR_IE]) {
4480 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4481 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4482 }
4483
4484 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4485 enum nl80211_mfp mfp =
4486 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4487 if (mfp == NL80211_MFP_REQUIRED)
4488 use_mfp = true;
4489 else if (mfp != NL80211_MFP_NO)
4490 return -EINVAL;
4491 }
4492
4493 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4494 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4495
4496 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4497 flags |= ASSOC_REQ_DISABLE_HT;
4498
4499 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4500 ht_capa_mask =
4501 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4502
4503 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4504 if (!ht_capa_mask)
4505 return -EINVAL;
4506 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4507 }
4508
4509 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4510 if (!err)
4511 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4512 ssid, ssid_len, ie, ie_len, use_mfp,
4513 &crypto, flags, ht_capa,
4514 ht_capa_mask);
4515
4516 return err;
4517 }
4518
4519 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4520 {
4521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4522 struct net_device *dev = info->user_ptr[1];
4523 const u8 *ie = NULL, *bssid;
4524 int ie_len = 0;
4525 u16 reason_code;
4526 bool local_state_change;
4527
4528 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4529 return -EINVAL;
4530
4531 if (!info->attrs[NL80211_ATTR_MAC])
4532 return -EINVAL;
4533
4534 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4535 return -EINVAL;
4536
4537 if (!rdev->ops->deauth)
4538 return -EOPNOTSUPP;
4539
4540 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4541 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4542 return -EOPNOTSUPP;
4543
4544 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4545
4546 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4547 if (reason_code == 0) {
4548 /* Reason Code 0 is reserved */
4549 return -EINVAL;
4550 }
4551
4552 if (info->attrs[NL80211_ATTR_IE]) {
4553 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4554 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4555 }
4556
4557 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4558
4559 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4560 local_state_change);
4561 }
4562
4563 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4564 {
4565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4566 struct net_device *dev = info->user_ptr[1];
4567 const u8 *ie = NULL, *bssid;
4568 int ie_len = 0;
4569 u16 reason_code;
4570 bool local_state_change;
4571
4572 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4573 return -EINVAL;
4574
4575 if (!info->attrs[NL80211_ATTR_MAC])
4576 return -EINVAL;
4577
4578 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4579 return -EINVAL;
4580
4581 if (!rdev->ops->disassoc)
4582 return -EOPNOTSUPP;
4583
4584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4586 return -EOPNOTSUPP;
4587
4588 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4589
4590 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4591 if (reason_code == 0) {
4592 /* Reason Code 0 is reserved */
4593 return -EINVAL;
4594 }
4595
4596 if (info->attrs[NL80211_ATTR_IE]) {
4597 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4598 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4599 }
4600
4601 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4602
4603 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4604 local_state_change);
4605 }
4606
4607 static bool
4608 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4609 int mcast_rate[IEEE80211_NUM_BANDS],
4610 int rateval)
4611 {
4612 struct wiphy *wiphy = &rdev->wiphy;
4613 bool found = false;
4614 int band, i;
4615
4616 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4617 struct ieee80211_supported_band *sband;
4618
4619 sband = wiphy->bands[band];
4620 if (!sband)
4621 continue;
4622
4623 for (i = 0; i < sband->n_bitrates; i++) {
4624 if (sband->bitrates[i].bitrate == rateval) {
4625 mcast_rate[band] = i + 1;
4626 found = true;
4627 break;
4628 }
4629 }
4630 }
4631
4632 return found;
4633 }
4634
4635 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4636 {
4637 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638 struct net_device *dev = info->user_ptr[1];
4639 struct cfg80211_ibss_params ibss;
4640 struct wiphy *wiphy;
4641 struct cfg80211_cached_keys *connkeys = NULL;
4642 int err;
4643
4644 memset(&ibss, 0, sizeof(ibss));
4645
4646 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4647 return -EINVAL;
4648
4649 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4650 !info->attrs[NL80211_ATTR_SSID] ||
4651 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4652 return -EINVAL;
4653
4654 ibss.beacon_interval = 100;
4655
4656 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4657 ibss.beacon_interval =
4658 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4659 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4660 return -EINVAL;
4661 }
4662
4663 if (!rdev->ops->join_ibss)
4664 return -EOPNOTSUPP;
4665
4666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4667 return -EOPNOTSUPP;
4668
4669 wiphy = &rdev->wiphy;
4670
4671 if (info->attrs[NL80211_ATTR_MAC]) {
4672 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4673
4674 if (!is_valid_ether_addr(ibss.bssid))
4675 return -EINVAL;
4676 }
4677 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4678 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4679
4680 if (info->attrs[NL80211_ATTR_IE]) {
4681 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4682 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4683 }
4684
4685 ibss.channel = ieee80211_get_channel(wiphy,
4686 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4687 if (!ibss.channel ||
4688 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4689 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4690 return -EINVAL;
4691
4692 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4693 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4694
4695 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4696 u8 *rates =
4697 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4698 int n_rates =
4699 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4700 struct ieee80211_supported_band *sband =
4701 wiphy->bands[ibss.channel->band];
4702 int err;
4703
4704 err = ieee80211_get_ratemask(sband, rates, n_rates,
4705 &ibss.basic_rates);
4706 if (err)
4707 return err;
4708 }
4709
4710 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4711 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4712 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4713 return -EINVAL;
4714
4715 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4716 connkeys = nl80211_parse_connkeys(rdev,
4717 info->attrs[NL80211_ATTR_KEYS]);
4718 if (IS_ERR(connkeys))
4719 return PTR_ERR(connkeys);
4720 }
4721
4722 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4723 if (err)
4724 kfree(connkeys);
4725 return err;
4726 }
4727
4728 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4729 {
4730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4731 struct net_device *dev = info->user_ptr[1];
4732
4733 if (!rdev->ops->leave_ibss)
4734 return -EOPNOTSUPP;
4735
4736 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4737 return -EOPNOTSUPP;
4738
4739 return cfg80211_leave_ibss(rdev, dev, false);
4740 }
4741
4742 #ifdef CONFIG_NL80211_TESTMODE
4743 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4744 .name = "testmode",
4745 };
4746
4747 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4748 {
4749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4750 int err;
4751
4752 if (!info->attrs[NL80211_ATTR_TESTDATA])
4753 return -EINVAL;
4754
4755 err = -EOPNOTSUPP;
4756 if (rdev->ops->testmode_cmd) {
4757 rdev->testmode_info = info;
4758 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4759 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4760 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4761 rdev->testmode_info = NULL;
4762 }
4763
4764 return err;
4765 }
4766
4767 static int nl80211_testmode_dump(struct sk_buff *skb,
4768 struct netlink_callback *cb)
4769 {
4770 struct cfg80211_registered_device *dev;
4771 int err;
4772 long phy_idx;
4773 void *data = NULL;
4774 int data_len = 0;
4775
4776 if (cb->args[0]) {
4777 /*
4778 * 0 is a valid index, but not valid for args[0],
4779 * so we need to offset by 1.
4780 */
4781 phy_idx = cb->args[0] - 1;
4782 } else {
4783 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4784 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4785 nl80211_policy);
4786 if (err)
4787 return err;
4788 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4789 return -EINVAL;
4790 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4791 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4792 cb->args[1] =
4793 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4794 }
4795
4796 if (cb->args[1]) {
4797 data = nla_data((void *)cb->args[1]);
4798 data_len = nla_len((void *)cb->args[1]);
4799 }
4800
4801 mutex_lock(&cfg80211_mutex);
4802 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4803 if (!dev) {
4804 mutex_unlock(&cfg80211_mutex);
4805 return -ENOENT;
4806 }
4807 cfg80211_lock_rdev(dev);
4808 mutex_unlock(&cfg80211_mutex);
4809
4810 if (!dev->ops->testmode_dump) {
4811 err = -EOPNOTSUPP;
4812 goto out_err;
4813 }
4814
4815 while (1) {
4816 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4817 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4818 NL80211_CMD_TESTMODE);
4819 struct nlattr *tmdata;
4820
4821 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4822 genlmsg_cancel(skb, hdr);
4823 break;
4824 }
4825
4826 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4827 if (!tmdata) {
4828 genlmsg_cancel(skb, hdr);
4829 break;
4830 }
4831 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4832 data, data_len);
4833 nla_nest_end(skb, tmdata);
4834
4835 if (err == -ENOBUFS || err == -ENOENT) {
4836 genlmsg_cancel(skb, hdr);
4837 break;
4838 } else if (err) {
4839 genlmsg_cancel(skb, hdr);
4840 goto out_err;
4841 }
4842
4843 genlmsg_end(skb, hdr);
4844 }
4845
4846 err = skb->len;
4847 /* see above */
4848 cb->args[0] = phy_idx + 1;
4849 out_err:
4850 cfg80211_unlock_rdev(dev);
4851 return err;
4852 }
4853
4854 static struct sk_buff *
4855 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4856 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4857 {
4858 struct sk_buff *skb;
4859 void *hdr;
4860 struct nlattr *data;
4861
4862 skb = nlmsg_new(approxlen + 100, gfp);
4863 if (!skb)
4864 return NULL;
4865
4866 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4867 if (!hdr) {
4868 kfree_skb(skb);
4869 return NULL;
4870 }
4871
4872 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4873 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4874
4875 ((void **)skb->cb)[0] = rdev;
4876 ((void **)skb->cb)[1] = hdr;
4877 ((void **)skb->cb)[2] = data;
4878
4879 return skb;
4880
4881 nla_put_failure:
4882 kfree_skb(skb);
4883 return NULL;
4884 }
4885
4886 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4887 int approxlen)
4888 {
4889 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4890
4891 if (WARN_ON(!rdev->testmode_info))
4892 return NULL;
4893
4894 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4895 rdev->testmode_info->snd_pid,
4896 rdev->testmode_info->snd_seq,
4897 GFP_KERNEL);
4898 }
4899 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4900
4901 int cfg80211_testmode_reply(struct sk_buff *skb)
4902 {
4903 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4904 void *hdr = ((void **)skb->cb)[1];
4905 struct nlattr *data = ((void **)skb->cb)[2];
4906
4907 if (WARN_ON(!rdev->testmode_info)) {
4908 kfree_skb(skb);
4909 return -EINVAL;
4910 }
4911
4912 nla_nest_end(skb, data);
4913 genlmsg_end(skb, hdr);
4914 return genlmsg_reply(skb, rdev->testmode_info);
4915 }
4916 EXPORT_SYMBOL(cfg80211_testmode_reply);
4917
4918 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4919 int approxlen, gfp_t gfp)
4920 {
4921 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4922
4923 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4924 }
4925 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4926
4927 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4928 {
4929 void *hdr = ((void **)skb->cb)[1];
4930 struct nlattr *data = ((void **)skb->cb)[2];
4931
4932 nla_nest_end(skb, data);
4933 genlmsg_end(skb, hdr);
4934 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4935 }
4936 EXPORT_SYMBOL(cfg80211_testmode_event);
4937 #endif
4938
4939 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4940 {
4941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4942 struct net_device *dev = info->user_ptr[1];
4943 struct cfg80211_connect_params connect;
4944 struct wiphy *wiphy;
4945 struct cfg80211_cached_keys *connkeys = NULL;
4946 int err;
4947
4948 memset(&connect, 0, sizeof(connect));
4949
4950 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4951 return -EINVAL;
4952
4953 if (!info->attrs[NL80211_ATTR_SSID] ||
4954 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4955 return -EINVAL;
4956
4957 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4958 connect.auth_type =
4959 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4960 if (!nl80211_valid_auth_type(connect.auth_type))
4961 return -EINVAL;
4962 } else
4963 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4964
4965 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4966
4967 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4968 NL80211_MAX_NR_CIPHER_SUITES);
4969 if (err)
4970 return err;
4971
4972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4974 return -EOPNOTSUPP;
4975
4976 wiphy = &rdev->wiphy;
4977
4978 if (info->attrs[NL80211_ATTR_MAC])
4979 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4980 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4981 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4982
4983 if (info->attrs[NL80211_ATTR_IE]) {
4984 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4985 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4986 }
4987
4988 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4989 connect.channel =
4990 ieee80211_get_channel(wiphy,
4991 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4992 if (!connect.channel ||
4993 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4994 return -EINVAL;
4995 }
4996
4997 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4998 connkeys = nl80211_parse_connkeys(rdev,
4999 info->attrs[NL80211_ATTR_KEYS]);
5000 if (IS_ERR(connkeys))
5001 return PTR_ERR(connkeys);
5002 }
5003
5004 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5005 connect.flags |= ASSOC_REQ_DISABLE_HT;
5006
5007 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5008 memcpy(&connect.ht_capa_mask,
5009 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5010 sizeof(connect.ht_capa_mask));
5011
5012 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5013 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5014 return -EINVAL;
5015 memcpy(&connect.ht_capa,
5016 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5017 sizeof(connect.ht_capa));
5018 }
5019
5020 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5021 if (err)
5022 kfree(connkeys);
5023 return err;
5024 }
5025
5026 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5027 {
5028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5029 struct net_device *dev = info->user_ptr[1];
5030 u16 reason;
5031
5032 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5033 reason = WLAN_REASON_DEAUTH_LEAVING;
5034 else
5035 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5036
5037 if (reason == 0)
5038 return -EINVAL;
5039
5040 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5041 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5042 return -EOPNOTSUPP;
5043
5044 return cfg80211_disconnect(rdev, dev, reason, true);
5045 }
5046
5047 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5048 {
5049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5050 struct net *net;
5051 int err;
5052 u32 pid;
5053
5054 if (!info->attrs[NL80211_ATTR_PID])
5055 return -EINVAL;
5056
5057 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5058
5059 net = get_net_ns_by_pid(pid);
5060 if (IS_ERR(net))
5061 return PTR_ERR(net);
5062
5063 err = 0;
5064
5065 /* check if anything to do */
5066 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5067 err = cfg80211_switch_netns(rdev, net);
5068
5069 put_net(net);
5070 return err;
5071 }
5072
5073 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5074 {
5075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5076 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5077 struct cfg80211_pmksa *pmksa) = NULL;
5078 struct net_device *dev = info->user_ptr[1];
5079 struct cfg80211_pmksa pmksa;
5080
5081 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5082
5083 if (!info->attrs[NL80211_ATTR_MAC])
5084 return -EINVAL;
5085
5086 if (!info->attrs[NL80211_ATTR_PMKID])
5087 return -EINVAL;
5088
5089 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5090 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5091
5092 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5093 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5094 return -EOPNOTSUPP;
5095
5096 switch (info->genlhdr->cmd) {
5097 case NL80211_CMD_SET_PMKSA:
5098 rdev_ops = rdev->ops->set_pmksa;
5099 break;
5100 case NL80211_CMD_DEL_PMKSA:
5101 rdev_ops = rdev->ops->del_pmksa;
5102 break;
5103 default:
5104 WARN_ON(1);
5105 break;
5106 }
5107
5108 if (!rdev_ops)
5109 return -EOPNOTSUPP;
5110
5111 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5112 }
5113
5114 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5115 {
5116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5117 struct net_device *dev = info->user_ptr[1];
5118
5119 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5120 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5121 return -EOPNOTSUPP;
5122
5123 if (!rdev->ops->flush_pmksa)
5124 return -EOPNOTSUPP;
5125
5126 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5127 }
5128
5129 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5130 {
5131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5132 struct net_device *dev = info->user_ptr[1];
5133 u8 action_code, dialog_token;
5134 u16 status_code;
5135 u8 *peer;
5136
5137 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5138 !rdev->ops->tdls_mgmt)
5139 return -EOPNOTSUPP;
5140
5141 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5142 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5143 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5144 !info->attrs[NL80211_ATTR_IE] ||
5145 !info->attrs[NL80211_ATTR_MAC])
5146 return -EINVAL;
5147
5148 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5149 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5150 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5151 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5152
5153 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5154 dialog_token, status_code,
5155 nla_data(info->attrs[NL80211_ATTR_IE]),
5156 nla_len(info->attrs[NL80211_ATTR_IE]));
5157 }
5158
5159 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5160 {
5161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5162 struct net_device *dev = info->user_ptr[1];
5163 enum nl80211_tdls_operation operation;
5164 u8 *peer;
5165
5166 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5167 !rdev->ops->tdls_oper)
5168 return -EOPNOTSUPP;
5169
5170 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5171 !info->attrs[NL80211_ATTR_MAC])
5172 return -EINVAL;
5173
5174 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5175 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5176
5177 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5178 }
5179
5180 static int nl80211_remain_on_channel(struct sk_buff *skb,
5181 struct genl_info *info)
5182 {
5183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5184 struct net_device *dev = info->user_ptr[1];
5185 struct ieee80211_channel *chan;
5186 struct sk_buff *msg;
5187 void *hdr;
5188 u64 cookie;
5189 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5190 u32 freq, duration;
5191 int err;
5192
5193 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5194 !info->attrs[NL80211_ATTR_DURATION])
5195 return -EINVAL;
5196
5197 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5198
5199 /*
5200 * We should be on that channel for at least one jiffie,
5201 * and more than 5 seconds seems excessive.
5202 */
5203 if (!duration || !msecs_to_jiffies(duration) ||
5204 duration > rdev->wiphy.max_remain_on_channel_duration)
5205 return -EINVAL;
5206
5207 if (!rdev->ops->remain_on_channel ||
5208 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5209 return -EOPNOTSUPP;
5210
5211 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5212 channel_type = nla_get_u32(
5213 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5214 if (channel_type != NL80211_CHAN_NO_HT &&
5215 channel_type != NL80211_CHAN_HT20 &&
5216 channel_type != NL80211_CHAN_HT40PLUS &&
5217 channel_type != NL80211_CHAN_HT40MINUS)
5218 return -EINVAL;
5219 }
5220
5221 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5222 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5223 if (chan == NULL)
5224 return -EINVAL;
5225
5226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5227 if (!msg)
5228 return -ENOMEM;
5229
5230 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5231 NL80211_CMD_REMAIN_ON_CHANNEL);
5232
5233 if (IS_ERR(hdr)) {
5234 err = PTR_ERR(hdr);
5235 goto free_msg;
5236 }
5237
5238 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5239 channel_type, duration, &cookie);
5240
5241 if (err)
5242 goto free_msg;
5243
5244 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5245
5246 genlmsg_end(msg, hdr);
5247
5248 return genlmsg_reply(msg, info);
5249
5250 nla_put_failure:
5251 err = -ENOBUFS;
5252 free_msg:
5253 nlmsg_free(msg);
5254 return err;
5255 }
5256
5257 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5258 struct genl_info *info)
5259 {
5260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5261 struct net_device *dev = info->user_ptr[1];
5262 u64 cookie;
5263
5264 if (!info->attrs[NL80211_ATTR_COOKIE])
5265 return -EINVAL;
5266
5267 if (!rdev->ops->cancel_remain_on_channel)
5268 return -EOPNOTSUPP;
5269
5270 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5271
5272 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5273 }
5274
5275 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5276 u8 *rates, u8 rates_len)
5277 {
5278 u8 i;
5279 u32 mask = 0;
5280
5281 for (i = 0; i < rates_len; i++) {
5282 int rate = (rates[i] & 0x7f) * 5;
5283 int ridx;
5284 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5285 struct ieee80211_rate *srate =
5286 &sband->bitrates[ridx];
5287 if (rate == srate->bitrate) {
5288 mask |= 1 << ridx;
5289 break;
5290 }
5291 }
5292 if (ridx == sband->n_bitrates)
5293 return 0; /* rate not found */
5294 }
5295
5296 return mask;
5297 }
5298
5299 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5300 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5301 .len = NL80211_MAX_SUPP_RATES },
5302 };
5303
5304 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5305 struct genl_info *info)
5306 {
5307 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5309 struct cfg80211_bitrate_mask mask;
5310 int rem, i;
5311 struct net_device *dev = info->user_ptr[1];
5312 struct nlattr *tx_rates;
5313 struct ieee80211_supported_band *sband;
5314
5315 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5316 return -EINVAL;
5317
5318 if (!rdev->ops->set_bitrate_mask)
5319 return -EOPNOTSUPP;
5320
5321 memset(&mask, 0, sizeof(mask));
5322 /* Default to all rates enabled */
5323 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5324 sband = rdev->wiphy.bands[i];
5325 mask.control[i].legacy =
5326 sband ? (1 << sband->n_bitrates) - 1 : 0;
5327 }
5328
5329 /*
5330 * The nested attribute uses enum nl80211_band as the index. This maps
5331 * directly to the enum ieee80211_band values used in cfg80211.
5332 */
5333 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5334 {
5335 enum ieee80211_band band = nla_type(tx_rates);
5336 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5337 return -EINVAL;
5338 sband = rdev->wiphy.bands[band];
5339 if (sband == NULL)
5340 return -EINVAL;
5341 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5342 nla_len(tx_rates), nl80211_txattr_policy);
5343 if (tb[NL80211_TXRATE_LEGACY]) {
5344 mask.control[band].legacy = rateset_to_mask(
5345 sband,
5346 nla_data(tb[NL80211_TXRATE_LEGACY]),
5347 nla_len(tb[NL80211_TXRATE_LEGACY]));
5348 if (mask.control[band].legacy == 0)
5349 return -EINVAL;
5350 }
5351 }
5352
5353 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5354 }
5355
5356 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5357 {
5358 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5359 struct net_device *dev = info->user_ptr[1];
5360 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5361
5362 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5363 return -EINVAL;
5364
5365 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5366 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5367
5368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5369 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5370 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5371 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5372 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5373 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5374 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5375 return -EOPNOTSUPP;
5376
5377 /* not much point in registering if we can't reply */
5378 if (!rdev->ops->mgmt_tx)
5379 return -EOPNOTSUPP;
5380
5381 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5382 frame_type,
5383 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5384 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5385 }
5386
5387 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5388 {
5389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5390 struct net_device *dev = info->user_ptr[1];
5391 struct ieee80211_channel *chan;
5392 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5393 bool channel_type_valid = false;
5394 u32 freq;
5395 int err;
5396 void *hdr = NULL;
5397 u64 cookie;
5398 struct sk_buff *msg = NULL;
5399 unsigned int wait = 0;
5400 bool offchan, no_cck, dont_wait_for_ack;
5401
5402 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5403
5404 if (!info->attrs[NL80211_ATTR_FRAME] ||
5405 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5406 return -EINVAL;
5407
5408 if (!rdev->ops->mgmt_tx)
5409 return -EOPNOTSUPP;
5410
5411 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5412 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5413 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5414 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5415 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5416 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5417 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5418 return -EOPNOTSUPP;
5419
5420 if (info->attrs[NL80211_ATTR_DURATION]) {
5421 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5422 return -EINVAL;
5423 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5424 }
5425
5426 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5427 channel_type = nla_get_u32(
5428 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5429 if (channel_type != NL80211_CHAN_NO_HT &&
5430 channel_type != NL80211_CHAN_HT20 &&
5431 channel_type != NL80211_CHAN_HT40PLUS &&
5432 channel_type != NL80211_CHAN_HT40MINUS)
5433 return -EINVAL;
5434 channel_type_valid = true;
5435 }
5436
5437 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5438
5439 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5440 return -EINVAL;
5441
5442 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5443
5444 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5445 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5446 if (chan == NULL)
5447 return -EINVAL;
5448
5449 if (!dont_wait_for_ack) {
5450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5451 if (!msg)
5452 return -ENOMEM;
5453
5454 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5455 NL80211_CMD_FRAME);
5456
5457 if (IS_ERR(hdr)) {
5458 err = PTR_ERR(hdr);
5459 goto free_msg;
5460 }
5461 }
5462
5463 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5464 channel_type_valid, wait,
5465 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5466 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5467 no_cck, dont_wait_for_ack, &cookie);
5468 if (err)
5469 goto free_msg;
5470
5471 if (msg) {
5472 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5473
5474 genlmsg_end(msg, hdr);
5475 return genlmsg_reply(msg, info);
5476 }
5477
5478 return 0;
5479
5480 nla_put_failure:
5481 err = -ENOBUFS;
5482 free_msg:
5483 nlmsg_free(msg);
5484 return err;
5485 }
5486
5487 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5488 {
5489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5490 struct net_device *dev = info->user_ptr[1];
5491 u64 cookie;
5492
5493 if (!info->attrs[NL80211_ATTR_COOKIE])
5494 return -EINVAL;
5495
5496 if (!rdev->ops->mgmt_tx_cancel_wait)
5497 return -EOPNOTSUPP;
5498
5499 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5500 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5501 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5502 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5503 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5504 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5505 return -EOPNOTSUPP;
5506
5507 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5508
5509 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5510 }
5511
5512 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5513 {
5514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5515 struct wireless_dev *wdev;
5516 struct net_device *dev = info->user_ptr[1];
5517 u8 ps_state;
5518 bool state;
5519 int err;
5520
5521 if (!info->attrs[NL80211_ATTR_PS_STATE])
5522 return -EINVAL;
5523
5524 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5525
5526 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5527 return -EINVAL;
5528
5529 wdev = dev->ieee80211_ptr;
5530
5531 if (!rdev->ops->set_power_mgmt)
5532 return -EOPNOTSUPP;
5533
5534 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5535
5536 if (state == wdev->ps)
5537 return 0;
5538
5539 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5540 wdev->ps_timeout);
5541 if (!err)
5542 wdev->ps = state;
5543 return err;
5544 }
5545
5546 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5547 {
5548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5549 enum nl80211_ps_state ps_state;
5550 struct wireless_dev *wdev;
5551 struct net_device *dev = info->user_ptr[1];
5552 struct sk_buff *msg;
5553 void *hdr;
5554 int err;
5555
5556 wdev = dev->ieee80211_ptr;
5557
5558 if (!rdev->ops->set_power_mgmt)
5559 return -EOPNOTSUPP;
5560
5561 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5562 if (!msg)
5563 return -ENOMEM;
5564
5565 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5566 NL80211_CMD_GET_POWER_SAVE);
5567 if (!hdr) {
5568 err = -ENOBUFS;
5569 goto free_msg;
5570 }
5571
5572 if (wdev->ps)
5573 ps_state = NL80211_PS_ENABLED;
5574 else
5575 ps_state = NL80211_PS_DISABLED;
5576
5577 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5578
5579 genlmsg_end(msg, hdr);
5580 return genlmsg_reply(msg, info);
5581
5582 nla_put_failure:
5583 err = -ENOBUFS;
5584 free_msg:
5585 nlmsg_free(msg);
5586 return err;
5587 }
5588
5589 static struct nla_policy
5590 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5591 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5592 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5593 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5594 };
5595
5596 static int nl80211_set_cqm_rssi(struct genl_info *info,
5597 s32 threshold, u32 hysteresis)
5598 {
5599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5600 struct wireless_dev *wdev;
5601 struct net_device *dev = info->user_ptr[1];
5602
5603 if (threshold > 0)
5604 return -EINVAL;
5605
5606 wdev = dev->ieee80211_ptr;
5607
5608 if (!rdev->ops->set_cqm_rssi_config)
5609 return -EOPNOTSUPP;
5610
5611 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5612 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5613 return -EOPNOTSUPP;
5614
5615 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5616 threshold, hysteresis);
5617 }
5618
5619 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5620 {
5621 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5622 struct nlattr *cqm;
5623 int err;
5624
5625 cqm = info->attrs[NL80211_ATTR_CQM];
5626 if (!cqm) {
5627 err = -EINVAL;
5628 goto out;
5629 }
5630
5631 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5632 nl80211_attr_cqm_policy);
5633 if (err)
5634 goto out;
5635
5636 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5637 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5638 s32 threshold;
5639 u32 hysteresis;
5640 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5641 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5642 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5643 } else
5644 err = -EINVAL;
5645
5646 out:
5647 return err;
5648 }
5649
5650 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5651 {
5652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5653 struct net_device *dev = info->user_ptr[1];
5654 struct mesh_config cfg;
5655 struct mesh_setup setup;
5656 int err;
5657
5658 /* start with default */
5659 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5660 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5661
5662 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5663 /* and parse parameters if given */
5664 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5665 if (err)
5666 return err;
5667 }
5668
5669 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5670 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5671 return -EINVAL;
5672
5673 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5674 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5675
5676 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5677 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
5678 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5679 return -EINVAL;
5680
5681 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5682 /* parse additional setup parameters if given */
5683 err = nl80211_parse_mesh_setup(info, &setup);
5684 if (err)
5685 return err;
5686 }
5687
5688 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5689 }
5690
5691 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5692 {
5693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5694 struct net_device *dev = info->user_ptr[1];
5695
5696 return cfg80211_leave_mesh(rdev, dev);
5697 }
5698
5699 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5700 {
5701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5702 struct sk_buff *msg;
5703 void *hdr;
5704
5705 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5706 return -EOPNOTSUPP;
5707
5708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5709 if (!msg)
5710 return -ENOMEM;
5711
5712 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5713 NL80211_CMD_GET_WOWLAN);
5714 if (!hdr)
5715 goto nla_put_failure;
5716
5717 if (rdev->wowlan) {
5718 struct nlattr *nl_wowlan;
5719
5720 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5721 if (!nl_wowlan)
5722 goto nla_put_failure;
5723
5724 if (rdev->wowlan->any)
5725 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5726 if (rdev->wowlan->disconnect)
5727 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5728 if (rdev->wowlan->magic_pkt)
5729 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5730 if (rdev->wowlan->gtk_rekey_failure)
5731 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5732 if (rdev->wowlan->eap_identity_req)
5733 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5734 if (rdev->wowlan->four_way_handshake)
5735 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5736 if (rdev->wowlan->rfkill_release)
5737 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5738 if (rdev->wowlan->n_patterns) {
5739 struct nlattr *nl_pats, *nl_pat;
5740 int i, pat_len;
5741
5742 nl_pats = nla_nest_start(msg,
5743 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5744 if (!nl_pats)
5745 goto nla_put_failure;
5746
5747 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5748 nl_pat = nla_nest_start(msg, i + 1);
5749 if (!nl_pat)
5750 goto nla_put_failure;
5751 pat_len = rdev->wowlan->patterns[i].pattern_len;
5752 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5753 DIV_ROUND_UP(pat_len, 8),
5754 rdev->wowlan->patterns[i].mask);
5755 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5756 pat_len,
5757 rdev->wowlan->patterns[i].pattern);
5758 nla_nest_end(msg, nl_pat);
5759 }
5760 nla_nest_end(msg, nl_pats);
5761 }
5762
5763 nla_nest_end(msg, nl_wowlan);
5764 }
5765
5766 genlmsg_end(msg, hdr);
5767 return genlmsg_reply(msg, info);
5768
5769 nla_put_failure:
5770 nlmsg_free(msg);
5771 return -ENOBUFS;
5772 }
5773
5774 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5775 {
5776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5777 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5778 struct cfg80211_wowlan no_triggers = {};
5779 struct cfg80211_wowlan new_triggers = {};
5780 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5781 int err, i;
5782
5783 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5784 return -EOPNOTSUPP;
5785
5786 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5787 goto no_triggers;
5788
5789 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5790 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5791 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5792 nl80211_wowlan_policy);
5793 if (err)
5794 return err;
5795
5796 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5797 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5798 return -EINVAL;
5799 new_triggers.any = true;
5800 }
5801
5802 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5803 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5804 return -EINVAL;
5805 new_triggers.disconnect = true;
5806 }
5807
5808 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5809 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5810 return -EINVAL;
5811 new_triggers.magic_pkt = true;
5812 }
5813
5814 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5815 return -EINVAL;
5816
5817 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5818 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5819 return -EINVAL;
5820 new_triggers.gtk_rekey_failure = true;
5821 }
5822
5823 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5824 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5825 return -EINVAL;
5826 new_triggers.eap_identity_req = true;
5827 }
5828
5829 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5830 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5831 return -EINVAL;
5832 new_triggers.four_way_handshake = true;
5833 }
5834
5835 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5836 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5837 return -EINVAL;
5838 new_triggers.rfkill_release = true;
5839 }
5840
5841 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5842 struct nlattr *pat;
5843 int n_patterns = 0;
5844 int rem, pat_len, mask_len;
5845 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5846
5847 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5848 rem)
5849 n_patterns++;
5850 if (n_patterns > wowlan->n_patterns)
5851 return -EINVAL;
5852
5853 new_triggers.patterns = kcalloc(n_patterns,
5854 sizeof(new_triggers.patterns[0]),
5855 GFP_KERNEL);
5856 if (!new_triggers.patterns)
5857 return -ENOMEM;
5858
5859 new_triggers.n_patterns = n_patterns;
5860 i = 0;
5861
5862 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5863 rem) {
5864 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5865 nla_data(pat), nla_len(pat), NULL);
5866 err = -EINVAL;
5867 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5868 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5869 goto error;
5870 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5871 mask_len = DIV_ROUND_UP(pat_len, 8);
5872 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5873 mask_len)
5874 goto error;
5875 if (pat_len > wowlan->pattern_max_len ||
5876 pat_len < wowlan->pattern_min_len)
5877 goto error;
5878
5879 new_triggers.patterns[i].mask =
5880 kmalloc(mask_len + pat_len, GFP_KERNEL);
5881 if (!new_triggers.patterns[i].mask) {
5882 err = -ENOMEM;
5883 goto error;
5884 }
5885 new_triggers.patterns[i].pattern =
5886 new_triggers.patterns[i].mask + mask_len;
5887 memcpy(new_triggers.patterns[i].mask,
5888 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5889 mask_len);
5890 new_triggers.patterns[i].pattern_len = pat_len;
5891 memcpy(new_triggers.patterns[i].pattern,
5892 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5893 pat_len);
5894 i++;
5895 }
5896 }
5897
5898 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5899 struct cfg80211_wowlan *ntrig;
5900 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5901 GFP_KERNEL);
5902 if (!ntrig) {
5903 err = -ENOMEM;
5904 goto error;
5905 }
5906 cfg80211_rdev_free_wowlan(rdev);
5907 rdev->wowlan = ntrig;
5908 } else {
5909 no_triggers:
5910 cfg80211_rdev_free_wowlan(rdev);
5911 rdev->wowlan = NULL;
5912 }
5913
5914 return 0;
5915 error:
5916 for (i = 0; i < new_triggers.n_patterns; i++)
5917 kfree(new_triggers.patterns[i].mask);
5918 kfree(new_triggers.patterns);
5919 return err;
5920 }
5921
5922 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5923 {
5924 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5925 struct net_device *dev = info->user_ptr[1];
5926 struct wireless_dev *wdev = dev->ieee80211_ptr;
5927 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5928 struct cfg80211_gtk_rekey_data rekey_data;
5929 int err;
5930
5931 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5932 return -EINVAL;
5933
5934 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5935 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5936 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5937 nl80211_rekey_policy);
5938 if (err)
5939 return err;
5940
5941 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5942 return -ERANGE;
5943 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5944 return -ERANGE;
5945 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5946 return -ERANGE;
5947
5948 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5949 NL80211_KEK_LEN);
5950 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5951 NL80211_KCK_LEN);
5952 memcpy(rekey_data.replay_ctr,
5953 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5954 NL80211_REPLAY_CTR_LEN);
5955
5956 wdev_lock(wdev);
5957 if (!wdev->current_bss) {
5958 err = -ENOTCONN;
5959 goto out;
5960 }
5961
5962 if (!rdev->ops->set_rekey_data) {
5963 err = -EOPNOTSUPP;
5964 goto out;
5965 }
5966
5967 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5968 out:
5969 wdev_unlock(wdev);
5970 return err;
5971 }
5972
5973 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
5974 struct genl_info *info)
5975 {
5976 struct net_device *dev = info->user_ptr[1];
5977 struct wireless_dev *wdev = dev->ieee80211_ptr;
5978
5979 if (wdev->iftype != NL80211_IFTYPE_AP &&
5980 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5981 return -EINVAL;
5982
5983 if (wdev->ap_unexpected_nlpid)
5984 return -EBUSY;
5985
5986 wdev->ap_unexpected_nlpid = info->snd_pid;
5987 return 0;
5988 }
5989
5990 static int nl80211_probe_client(struct sk_buff *skb,
5991 struct genl_info *info)
5992 {
5993 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5994 struct net_device *dev = info->user_ptr[1];
5995 struct wireless_dev *wdev = dev->ieee80211_ptr;
5996 struct sk_buff *msg;
5997 void *hdr;
5998 const u8 *addr;
5999 u64 cookie;
6000 int err;
6001
6002 if (wdev->iftype != NL80211_IFTYPE_AP &&
6003 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6004 return -EOPNOTSUPP;
6005
6006 if (!info->attrs[NL80211_ATTR_MAC])
6007 return -EINVAL;
6008
6009 if (!rdev->ops->probe_client)
6010 return -EOPNOTSUPP;
6011
6012 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6013 if (!msg)
6014 return -ENOMEM;
6015
6016 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6017 NL80211_CMD_PROBE_CLIENT);
6018
6019 if (IS_ERR(hdr)) {
6020 err = PTR_ERR(hdr);
6021 goto free_msg;
6022 }
6023
6024 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6025
6026 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6027 if (err)
6028 goto free_msg;
6029
6030 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6031
6032 genlmsg_end(msg, hdr);
6033
6034 return genlmsg_reply(msg, info);
6035
6036 nla_put_failure:
6037 err = -ENOBUFS;
6038 free_msg:
6039 nlmsg_free(msg);
6040 return err;
6041 }
6042
6043 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6044 {
6045 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6046
6047 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6048 return -EOPNOTSUPP;
6049
6050 if (rdev->ap_beacons_nlpid)
6051 return -EBUSY;
6052
6053 rdev->ap_beacons_nlpid = info->snd_pid;
6054
6055 return 0;
6056 }
6057
6058 #define NL80211_FLAG_NEED_WIPHY 0x01
6059 #define NL80211_FLAG_NEED_NETDEV 0x02
6060 #define NL80211_FLAG_NEED_RTNL 0x04
6061 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6062 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6063 NL80211_FLAG_CHECK_NETDEV_UP)
6064
6065 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6066 struct genl_info *info)
6067 {
6068 struct cfg80211_registered_device *rdev;
6069 struct net_device *dev;
6070 int err;
6071 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6072
6073 if (rtnl)
6074 rtnl_lock();
6075
6076 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6077 rdev = cfg80211_get_dev_from_info(info);
6078 if (IS_ERR(rdev)) {
6079 if (rtnl)
6080 rtnl_unlock();
6081 return PTR_ERR(rdev);
6082 }
6083 info->user_ptr[0] = rdev;
6084 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6085 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
6086 if (err) {
6087 if (rtnl)
6088 rtnl_unlock();
6089 return err;
6090 }
6091 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6092 !netif_running(dev)) {
6093 cfg80211_unlock_rdev(rdev);
6094 dev_put(dev);
6095 if (rtnl)
6096 rtnl_unlock();
6097 return -ENETDOWN;
6098 }
6099 info->user_ptr[0] = rdev;
6100 info->user_ptr[1] = dev;
6101 }
6102
6103 return 0;
6104 }
6105
6106 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6107 struct genl_info *info)
6108 {
6109 if (info->user_ptr[0])
6110 cfg80211_unlock_rdev(info->user_ptr[0]);
6111 if (info->user_ptr[1])
6112 dev_put(info->user_ptr[1]);
6113 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6114 rtnl_unlock();
6115 }
6116
6117 static struct genl_ops nl80211_ops[] = {
6118 {
6119 .cmd = NL80211_CMD_GET_WIPHY,
6120 .doit = nl80211_get_wiphy,
6121 .dumpit = nl80211_dump_wiphy,
6122 .policy = nl80211_policy,
6123 /* can be retrieved by unprivileged users */
6124 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6125 },
6126 {
6127 .cmd = NL80211_CMD_SET_WIPHY,
6128 .doit = nl80211_set_wiphy,
6129 .policy = nl80211_policy,
6130 .flags = GENL_ADMIN_PERM,
6131 .internal_flags = NL80211_FLAG_NEED_RTNL,
6132 },
6133 {
6134 .cmd = NL80211_CMD_GET_INTERFACE,
6135 .doit = nl80211_get_interface,
6136 .dumpit = nl80211_dump_interface,
6137 .policy = nl80211_policy,
6138 /* can be retrieved by unprivileged users */
6139 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6140 },
6141 {
6142 .cmd = NL80211_CMD_SET_INTERFACE,
6143 .doit = nl80211_set_interface,
6144 .policy = nl80211_policy,
6145 .flags = GENL_ADMIN_PERM,
6146 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6147 NL80211_FLAG_NEED_RTNL,
6148 },
6149 {
6150 .cmd = NL80211_CMD_NEW_INTERFACE,
6151 .doit = nl80211_new_interface,
6152 .policy = nl80211_policy,
6153 .flags = GENL_ADMIN_PERM,
6154 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6155 NL80211_FLAG_NEED_RTNL,
6156 },
6157 {
6158 .cmd = NL80211_CMD_DEL_INTERFACE,
6159 .doit = nl80211_del_interface,
6160 .policy = nl80211_policy,
6161 .flags = GENL_ADMIN_PERM,
6162 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6163 NL80211_FLAG_NEED_RTNL,
6164 },
6165 {
6166 .cmd = NL80211_CMD_GET_KEY,
6167 .doit = nl80211_get_key,
6168 .policy = nl80211_policy,
6169 .flags = GENL_ADMIN_PERM,
6170 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6171 NL80211_FLAG_NEED_RTNL,
6172 },
6173 {
6174 .cmd = NL80211_CMD_SET_KEY,
6175 .doit = nl80211_set_key,
6176 .policy = nl80211_policy,
6177 .flags = GENL_ADMIN_PERM,
6178 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6179 NL80211_FLAG_NEED_RTNL,
6180 },
6181 {
6182 .cmd = NL80211_CMD_NEW_KEY,
6183 .doit = nl80211_new_key,
6184 .policy = nl80211_policy,
6185 .flags = GENL_ADMIN_PERM,
6186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6187 NL80211_FLAG_NEED_RTNL,
6188 },
6189 {
6190 .cmd = NL80211_CMD_DEL_KEY,
6191 .doit = nl80211_del_key,
6192 .policy = nl80211_policy,
6193 .flags = GENL_ADMIN_PERM,
6194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6195 NL80211_FLAG_NEED_RTNL,
6196 },
6197 {
6198 .cmd = NL80211_CMD_SET_BEACON,
6199 .policy = nl80211_policy,
6200 .flags = GENL_ADMIN_PERM,
6201 .doit = nl80211_addset_beacon,
6202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6203 NL80211_FLAG_NEED_RTNL,
6204 },
6205 {
6206 .cmd = NL80211_CMD_NEW_BEACON,
6207 .policy = nl80211_policy,
6208 .flags = GENL_ADMIN_PERM,
6209 .doit = nl80211_addset_beacon,
6210 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6211 NL80211_FLAG_NEED_RTNL,
6212 },
6213 {
6214 .cmd = NL80211_CMD_DEL_BEACON,
6215 .policy = nl80211_policy,
6216 .flags = GENL_ADMIN_PERM,
6217 .doit = nl80211_del_beacon,
6218 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6219 NL80211_FLAG_NEED_RTNL,
6220 },
6221 {
6222 .cmd = NL80211_CMD_GET_STATION,
6223 .doit = nl80211_get_station,
6224 .dumpit = nl80211_dump_station,
6225 .policy = nl80211_policy,
6226 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6227 NL80211_FLAG_NEED_RTNL,
6228 },
6229 {
6230 .cmd = NL80211_CMD_SET_STATION,
6231 .doit = nl80211_set_station,
6232 .policy = nl80211_policy,
6233 .flags = GENL_ADMIN_PERM,
6234 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6235 NL80211_FLAG_NEED_RTNL,
6236 },
6237 {
6238 .cmd = NL80211_CMD_NEW_STATION,
6239 .doit = nl80211_new_station,
6240 .policy = nl80211_policy,
6241 .flags = GENL_ADMIN_PERM,
6242 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6243 NL80211_FLAG_NEED_RTNL,
6244 },
6245 {
6246 .cmd = NL80211_CMD_DEL_STATION,
6247 .doit = nl80211_del_station,
6248 .policy = nl80211_policy,
6249 .flags = GENL_ADMIN_PERM,
6250 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6251 NL80211_FLAG_NEED_RTNL,
6252 },
6253 {
6254 .cmd = NL80211_CMD_GET_MPATH,
6255 .doit = nl80211_get_mpath,
6256 .dumpit = nl80211_dump_mpath,
6257 .policy = nl80211_policy,
6258 .flags = GENL_ADMIN_PERM,
6259 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6260 NL80211_FLAG_NEED_RTNL,
6261 },
6262 {
6263 .cmd = NL80211_CMD_SET_MPATH,
6264 .doit = nl80211_set_mpath,
6265 .policy = nl80211_policy,
6266 .flags = GENL_ADMIN_PERM,
6267 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6268 NL80211_FLAG_NEED_RTNL,
6269 },
6270 {
6271 .cmd = NL80211_CMD_NEW_MPATH,
6272 .doit = nl80211_new_mpath,
6273 .policy = nl80211_policy,
6274 .flags = GENL_ADMIN_PERM,
6275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6276 NL80211_FLAG_NEED_RTNL,
6277 },
6278 {
6279 .cmd = NL80211_CMD_DEL_MPATH,
6280 .doit = nl80211_del_mpath,
6281 .policy = nl80211_policy,
6282 .flags = GENL_ADMIN_PERM,
6283 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6284 NL80211_FLAG_NEED_RTNL,
6285 },
6286 {
6287 .cmd = NL80211_CMD_SET_BSS,
6288 .doit = nl80211_set_bss,
6289 .policy = nl80211_policy,
6290 .flags = GENL_ADMIN_PERM,
6291 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6292 NL80211_FLAG_NEED_RTNL,
6293 },
6294 {
6295 .cmd = NL80211_CMD_GET_REG,
6296 .doit = nl80211_get_reg,
6297 .policy = nl80211_policy,
6298 /* can be retrieved by unprivileged users */
6299 },
6300 {
6301 .cmd = NL80211_CMD_SET_REG,
6302 .doit = nl80211_set_reg,
6303 .policy = nl80211_policy,
6304 .flags = GENL_ADMIN_PERM,
6305 },
6306 {
6307 .cmd = NL80211_CMD_REQ_SET_REG,
6308 .doit = nl80211_req_set_reg,
6309 .policy = nl80211_policy,
6310 .flags = GENL_ADMIN_PERM,
6311 },
6312 {
6313 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6314 .doit = nl80211_get_mesh_config,
6315 .policy = nl80211_policy,
6316 /* can be retrieved by unprivileged users */
6317 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6318 NL80211_FLAG_NEED_RTNL,
6319 },
6320 {
6321 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6322 .doit = nl80211_update_mesh_config,
6323 .policy = nl80211_policy,
6324 .flags = GENL_ADMIN_PERM,
6325 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6326 NL80211_FLAG_NEED_RTNL,
6327 },
6328 {
6329 .cmd = NL80211_CMD_TRIGGER_SCAN,
6330 .doit = nl80211_trigger_scan,
6331 .policy = nl80211_policy,
6332 .flags = GENL_ADMIN_PERM,
6333 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6334 NL80211_FLAG_NEED_RTNL,
6335 },
6336 {
6337 .cmd = NL80211_CMD_GET_SCAN,
6338 .policy = nl80211_policy,
6339 .dumpit = nl80211_dump_scan,
6340 },
6341 {
6342 .cmd = NL80211_CMD_START_SCHED_SCAN,
6343 .doit = nl80211_start_sched_scan,
6344 .policy = nl80211_policy,
6345 .flags = GENL_ADMIN_PERM,
6346 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6347 NL80211_FLAG_NEED_RTNL,
6348 },
6349 {
6350 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6351 .doit = nl80211_stop_sched_scan,
6352 .policy = nl80211_policy,
6353 .flags = GENL_ADMIN_PERM,
6354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6355 NL80211_FLAG_NEED_RTNL,
6356 },
6357 {
6358 .cmd = NL80211_CMD_AUTHENTICATE,
6359 .doit = nl80211_authenticate,
6360 .policy = nl80211_policy,
6361 .flags = GENL_ADMIN_PERM,
6362 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6363 NL80211_FLAG_NEED_RTNL,
6364 },
6365 {
6366 .cmd = NL80211_CMD_ASSOCIATE,
6367 .doit = nl80211_associate,
6368 .policy = nl80211_policy,
6369 .flags = GENL_ADMIN_PERM,
6370 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6371 NL80211_FLAG_NEED_RTNL,
6372 },
6373 {
6374 .cmd = NL80211_CMD_DEAUTHENTICATE,
6375 .doit = nl80211_deauthenticate,
6376 .policy = nl80211_policy,
6377 .flags = GENL_ADMIN_PERM,
6378 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6379 NL80211_FLAG_NEED_RTNL,
6380 },
6381 {
6382 .cmd = NL80211_CMD_DISASSOCIATE,
6383 .doit = nl80211_disassociate,
6384 .policy = nl80211_policy,
6385 .flags = GENL_ADMIN_PERM,
6386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6387 NL80211_FLAG_NEED_RTNL,
6388 },
6389 {
6390 .cmd = NL80211_CMD_JOIN_IBSS,
6391 .doit = nl80211_join_ibss,
6392 .policy = nl80211_policy,
6393 .flags = GENL_ADMIN_PERM,
6394 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6395 NL80211_FLAG_NEED_RTNL,
6396 },
6397 {
6398 .cmd = NL80211_CMD_LEAVE_IBSS,
6399 .doit = nl80211_leave_ibss,
6400 .policy = nl80211_policy,
6401 .flags = GENL_ADMIN_PERM,
6402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6403 NL80211_FLAG_NEED_RTNL,
6404 },
6405 #ifdef CONFIG_NL80211_TESTMODE
6406 {
6407 .cmd = NL80211_CMD_TESTMODE,
6408 .doit = nl80211_testmode_do,
6409 .dumpit = nl80211_testmode_dump,
6410 .policy = nl80211_policy,
6411 .flags = GENL_ADMIN_PERM,
6412 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6413 NL80211_FLAG_NEED_RTNL,
6414 },
6415 #endif
6416 {
6417 .cmd = NL80211_CMD_CONNECT,
6418 .doit = nl80211_connect,
6419 .policy = nl80211_policy,
6420 .flags = GENL_ADMIN_PERM,
6421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6422 NL80211_FLAG_NEED_RTNL,
6423 },
6424 {
6425 .cmd = NL80211_CMD_DISCONNECT,
6426 .doit = nl80211_disconnect,
6427 .policy = nl80211_policy,
6428 .flags = GENL_ADMIN_PERM,
6429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6430 NL80211_FLAG_NEED_RTNL,
6431 },
6432 {
6433 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6434 .doit = nl80211_wiphy_netns,
6435 .policy = nl80211_policy,
6436 .flags = GENL_ADMIN_PERM,
6437 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6438 NL80211_FLAG_NEED_RTNL,
6439 },
6440 {
6441 .cmd = NL80211_CMD_GET_SURVEY,
6442 .policy = nl80211_policy,
6443 .dumpit = nl80211_dump_survey,
6444 },
6445 {
6446 .cmd = NL80211_CMD_SET_PMKSA,
6447 .doit = nl80211_setdel_pmksa,
6448 .policy = nl80211_policy,
6449 .flags = GENL_ADMIN_PERM,
6450 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6451 NL80211_FLAG_NEED_RTNL,
6452 },
6453 {
6454 .cmd = NL80211_CMD_DEL_PMKSA,
6455 .doit = nl80211_setdel_pmksa,
6456 .policy = nl80211_policy,
6457 .flags = GENL_ADMIN_PERM,
6458 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6459 NL80211_FLAG_NEED_RTNL,
6460 },
6461 {
6462 .cmd = NL80211_CMD_FLUSH_PMKSA,
6463 .doit = nl80211_flush_pmksa,
6464 .policy = nl80211_policy,
6465 .flags = GENL_ADMIN_PERM,
6466 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6467 NL80211_FLAG_NEED_RTNL,
6468 },
6469 {
6470 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6471 .doit = nl80211_remain_on_channel,
6472 .policy = nl80211_policy,
6473 .flags = GENL_ADMIN_PERM,
6474 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6475 NL80211_FLAG_NEED_RTNL,
6476 },
6477 {
6478 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6479 .doit = nl80211_cancel_remain_on_channel,
6480 .policy = nl80211_policy,
6481 .flags = GENL_ADMIN_PERM,
6482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6483 NL80211_FLAG_NEED_RTNL,
6484 },
6485 {
6486 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6487 .doit = nl80211_set_tx_bitrate_mask,
6488 .policy = nl80211_policy,
6489 .flags = GENL_ADMIN_PERM,
6490 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6491 NL80211_FLAG_NEED_RTNL,
6492 },
6493 {
6494 .cmd = NL80211_CMD_REGISTER_FRAME,
6495 .doit = nl80211_register_mgmt,
6496 .policy = nl80211_policy,
6497 .flags = GENL_ADMIN_PERM,
6498 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6499 NL80211_FLAG_NEED_RTNL,
6500 },
6501 {
6502 .cmd = NL80211_CMD_FRAME,
6503 .doit = nl80211_tx_mgmt,
6504 .policy = nl80211_policy,
6505 .flags = GENL_ADMIN_PERM,
6506 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6507 NL80211_FLAG_NEED_RTNL,
6508 },
6509 {
6510 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6511 .doit = nl80211_tx_mgmt_cancel_wait,
6512 .policy = nl80211_policy,
6513 .flags = GENL_ADMIN_PERM,
6514 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6515 NL80211_FLAG_NEED_RTNL,
6516 },
6517 {
6518 .cmd = NL80211_CMD_SET_POWER_SAVE,
6519 .doit = nl80211_set_power_save,
6520 .policy = nl80211_policy,
6521 .flags = GENL_ADMIN_PERM,
6522 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6523 NL80211_FLAG_NEED_RTNL,
6524 },
6525 {
6526 .cmd = NL80211_CMD_GET_POWER_SAVE,
6527 .doit = nl80211_get_power_save,
6528 .policy = nl80211_policy,
6529 /* can be retrieved by unprivileged users */
6530 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6531 NL80211_FLAG_NEED_RTNL,
6532 },
6533 {
6534 .cmd = NL80211_CMD_SET_CQM,
6535 .doit = nl80211_set_cqm,
6536 .policy = nl80211_policy,
6537 .flags = GENL_ADMIN_PERM,
6538 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6539 NL80211_FLAG_NEED_RTNL,
6540 },
6541 {
6542 .cmd = NL80211_CMD_SET_CHANNEL,
6543 .doit = nl80211_set_channel,
6544 .policy = nl80211_policy,
6545 .flags = GENL_ADMIN_PERM,
6546 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6547 NL80211_FLAG_NEED_RTNL,
6548 },
6549 {
6550 .cmd = NL80211_CMD_SET_WDS_PEER,
6551 .doit = nl80211_set_wds_peer,
6552 .policy = nl80211_policy,
6553 .flags = GENL_ADMIN_PERM,
6554 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6555 NL80211_FLAG_NEED_RTNL,
6556 },
6557 {
6558 .cmd = NL80211_CMD_JOIN_MESH,
6559 .doit = nl80211_join_mesh,
6560 .policy = nl80211_policy,
6561 .flags = GENL_ADMIN_PERM,
6562 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6563 NL80211_FLAG_NEED_RTNL,
6564 },
6565 {
6566 .cmd = NL80211_CMD_LEAVE_MESH,
6567 .doit = nl80211_leave_mesh,
6568 .policy = nl80211_policy,
6569 .flags = GENL_ADMIN_PERM,
6570 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6571 NL80211_FLAG_NEED_RTNL,
6572 },
6573 {
6574 .cmd = NL80211_CMD_GET_WOWLAN,
6575 .doit = nl80211_get_wowlan,
6576 .policy = nl80211_policy,
6577 /* can be retrieved by unprivileged users */
6578 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6579 NL80211_FLAG_NEED_RTNL,
6580 },
6581 {
6582 .cmd = NL80211_CMD_SET_WOWLAN,
6583 .doit = nl80211_set_wowlan,
6584 .policy = nl80211_policy,
6585 .flags = GENL_ADMIN_PERM,
6586 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6587 NL80211_FLAG_NEED_RTNL,
6588 },
6589 {
6590 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6591 .doit = nl80211_set_rekey_data,
6592 .policy = nl80211_policy,
6593 .flags = GENL_ADMIN_PERM,
6594 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6595 NL80211_FLAG_NEED_RTNL,
6596 },
6597 {
6598 .cmd = NL80211_CMD_TDLS_MGMT,
6599 .doit = nl80211_tdls_mgmt,
6600 .policy = nl80211_policy,
6601 .flags = GENL_ADMIN_PERM,
6602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6603 NL80211_FLAG_NEED_RTNL,
6604 },
6605 {
6606 .cmd = NL80211_CMD_TDLS_OPER,
6607 .doit = nl80211_tdls_oper,
6608 .policy = nl80211_policy,
6609 .flags = GENL_ADMIN_PERM,
6610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6611 NL80211_FLAG_NEED_RTNL,
6612 },
6613 {
6614 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
6615 .doit = nl80211_register_unexpected_frame,
6616 .policy = nl80211_policy,
6617 .flags = GENL_ADMIN_PERM,
6618 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6619 NL80211_FLAG_NEED_RTNL,
6620 },
6621 {
6622 .cmd = NL80211_CMD_PROBE_CLIENT,
6623 .doit = nl80211_probe_client,
6624 .policy = nl80211_policy,
6625 .flags = GENL_ADMIN_PERM,
6626 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6627 NL80211_FLAG_NEED_RTNL,
6628 },
6629 {
6630 .cmd = NL80211_CMD_REGISTER_BEACONS,
6631 .doit = nl80211_register_beacons,
6632 .policy = nl80211_policy,
6633 .flags = GENL_ADMIN_PERM,
6634 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6635 NL80211_FLAG_NEED_RTNL,
6636 },
6637 {
6638 .cmd = NL80211_CMD_SET_NOACK_MAP,
6639 .doit = nl80211_set_noack_map,
6640 .policy = nl80211_policy,
6641 .flags = GENL_ADMIN_PERM,
6642 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6643 NL80211_FLAG_NEED_RTNL,
6644 },
6645
6646 };
6647
6648 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6649 .name = "mlme",
6650 };
6651
6652 /* multicast groups */
6653 static struct genl_multicast_group nl80211_config_mcgrp = {
6654 .name = "config",
6655 };
6656 static struct genl_multicast_group nl80211_scan_mcgrp = {
6657 .name = "scan",
6658 };
6659 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6660 .name = "regulatory",
6661 };
6662
6663 /* notification functions */
6664
6665 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6666 {
6667 struct sk_buff *msg;
6668
6669 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6670 if (!msg)
6671 return;
6672
6673 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6674 nlmsg_free(msg);
6675 return;
6676 }
6677
6678 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6679 nl80211_config_mcgrp.id, GFP_KERNEL);
6680 }
6681
6682 static int nl80211_add_scan_req(struct sk_buff *msg,
6683 struct cfg80211_registered_device *rdev)
6684 {
6685 struct cfg80211_scan_request *req = rdev->scan_req;
6686 struct nlattr *nest;
6687 int i;
6688
6689 ASSERT_RDEV_LOCK(rdev);
6690
6691 if (WARN_ON(!req))
6692 return 0;
6693
6694 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6695 if (!nest)
6696 goto nla_put_failure;
6697 for (i = 0; i < req->n_ssids; i++)
6698 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6699 nla_nest_end(msg, nest);
6700
6701 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6702 if (!nest)
6703 goto nla_put_failure;
6704 for (i = 0; i < req->n_channels; i++)
6705 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6706 nla_nest_end(msg, nest);
6707
6708 if (req->ie)
6709 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6710
6711 return 0;
6712 nla_put_failure:
6713 return -ENOBUFS;
6714 }
6715
6716 static int nl80211_send_scan_msg(struct sk_buff *msg,
6717 struct cfg80211_registered_device *rdev,
6718 struct net_device *netdev,
6719 u32 pid, u32 seq, int flags,
6720 u32 cmd)
6721 {
6722 void *hdr;
6723
6724 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6725 if (!hdr)
6726 return -1;
6727
6728 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6729 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6730
6731 /* ignore errors and send incomplete event anyway */
6732 nl80211_add_scan_req(msg, rdev);
6733
6734 return genlmsg_end(msg, hdr);
6735
6736 nla_put_failure:
6737 genlmsg_cancel(msg, hdr);
6738 return -EMSGSIZE;
6739 }
6740
6741 static int
6742 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6743 struct cfg80211_registered_device *rdev,
6744 struct net_device *netdev,
6745 u32 pid, u32 seq, int flags, u32 cmd)
6746 {
6747 void *hdr;
6748
6749 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6750 if (!hdr)
6751 return -1;
6752
6753 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6754 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6755
6756 return genlmsg_end(msg, hdr);
6757
6758 nla_put_failure:
6759 genlmsg_cancel(msg, hdr);
6760 return -EMSGSIZE;
6761 }
6762
6763 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6764 struct net_device *netdev)
6765 {
6766 struct sk_buff *msg;
6767
6768 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6769 if (!msg)
6770 return;
6771
6772 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6773 NL80211_CMD_TRIGGER_SCAN) < 0) {
6774 nlmsg_free(msg);
6775 return;
6776 }
6777
6778 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6779 nl80211_scan_mcgrp.id, GFP_KERNEL);
6780 }
6781
6782 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6783 struct net_device *netdev)
6784 {
6785 struct sk_buff *msg;
6786
6787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6788 if (!msg)
6789 return;
6790
6791 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6792 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6793 nlmsg_free(msg);
6794 return;
6795 }
6796
6797 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6798 nl80211_scan_mcgrp.id, GFP_KERNEL);
6799 }
6800
6801 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6802 struct net_device *netdev)
6803 {
6804 struct sk_buff *msg;
6805
6806 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6807 if (!msg)
6808 return;
6809
6810 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6811 NL80211_CMD_SCAN_ABORTED) < 0) {
6812 nlmsg_free(msg);
6813 return;
6814 }
6815
6816 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6817 nl80211_scan_mcgrp.id, GFP_KERNEL);
6818 }
6819
6820 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6821 struct net_device *netdev)
6822 {
6823 struct sk_buff *msg;
6824
6825 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6826 if (!msg)
6827 return;
6828
6829 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6830 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6831 nlmsg_free(msg);
6832 return;
6833 }
6834
6835 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6836 nl80211_scan_mcgrp.id, GFP_KERNEL);
6837 }
6838
6839 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6840 struct net_device *netdev, u32 cmd)
6841 {
6842 struct sk_buff *msg;
6843
6844 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6845 if (!msg)
6846 return;
6847
6848 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6849 nlmsg_free(msg);
6850 return;
6851 }
6852
6853 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6854 nl80211_scan_mcgrp.id, GFP_KERNEL);
6855 }
6856
6857 /*
6858 * This can happen on global regulatory changes or device specific settings
6859 * based on custom world regulatory domains.
6860 */
6861 void nl80211_send_reg_change_event(struct regulatory_request *request)
6862 {
6863 struct sk_buff *msg;
6864 void *hdr;
6865
6866 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6867 if (!msg)
6868 return;
6869
6870 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6871 if (!hdr) {
6872 nlmsg_free(msg);
6873 return;
6874 }
6875
6876 /* Userspace can always count this one always being set */
6877 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6878
6879 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6880 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6881 NL80211_REGDOM_TYPE_WORLD);
6882 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6883 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6884 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6885 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6886 request->intersect)
6887 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6888 NL80211_REGDOM_TYPE_INTERSECTION);
6889 else {
6890 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6891 NL80211_REGDOM_TYPE_COUNTRY);
6892 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6893 }
6894
6895 if (wiphy_idx_valid(request->wiphy_idx))
6896 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6897
6898 genlmsg_end(msg, hdr);
6899
6900 rcu_read_lock();
6901 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6902 GFP_ATOMIC);
6903 rcu_read_unlock();
6904
6905 return;
6906
6907 nla_put_failure:
6908 genlmsg_cancel(msg, hdr);
6909 nlmsg_free(msg);
6910 }
6911
6912 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6913 struct net_device *netdev,
6914 const u8 *buf, size_t len,
6915 enum nl80211_commands cmd, gfp_t gfp)
6916 {
6917 struct sk_buff *msg;
6918 void *hdr;
6919
6920 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6921 if (!msg)
6922 return;
6923
6924 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6925 if (!hdr) {
6926 nlmsg_free(msg);
6927 return;
6928 }
6929
6930 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6931 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6932 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6933
6934 genlmsg_end(msg, hdr);
6935
6936 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6937 nl80211_mlme_mcgrp.id, gfp);
6938 return;
6939
6940 nla_put_failure:
6941 genlmsg_cancel(msg, hdr);
6942 nlmsg_free(msg);
6943 }
6944
6945 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6946 struct net_device *netdev, const u8 *buf,
6947 size_t len, gfp_t gfp)
6948 {
6949 nl80211_send_mlme_event(rdev, netdev, buf, len,
6950 NL80211_CMD_AUTHENTICATE, gfp);
6951 }
6952
6953 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6954 struct net_device *netdev, const u8 *buf,
6955 size_t len, gfp_t gfp)
6956 {
6957 nl80211_send_mlme_event(rdev, netdev, buf, len,
6958 NL80211_CMD_ASSOCIATE, gfp);
6959 }
6960
6961 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6962 struct net_device *netdev, const u8 *buf,
6963 size_t len, gfp_t gfp)
6964 {
6965 nl80211_send_mlme_event(rdev, netdev, buf, len,
6966 NL80211_CMD_DEAUTHENTICATE, gfp);
6967 }
6968
6969 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6970 struct net_device *netdev, const u8 *buf,
6971 size_t len, gfp_t gfp)
6972 {
6973 nl80211_send_mlme_event(rdev, netdev, buf, len,
6974 NL80211_CMD_DISASSOCIATE, gfp);
6975 }
6976
6977 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6978 struct net_device *netdev, const u8 *buf,
6979 size_t len, gfp_t gfp)
6980 {
6981 nl80211_send_mlme_event(rdev, netdev, buf, len,
6982 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6983 }
6984
6985 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6986 struct net_device *netdev, const u8 *buf,
6987 size_t len, gfp_t gfp)
6988 {
6989 nl80211_send_mlme_event(rdev, netdev, buf, len,
6990 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6991 }
6992
6993 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6994 struct net_device *netdev, int cmd,
6995 const u8 *addr, gfp_t gfp)
6996 {
6997 struct sk_buff *msg;
6998 void *hdr;
6999
7000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7001 if (!msg)
7002 return;
7003
7004 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7005 if (!hdr) {
7006 nlmsg_free(msg);
7007 return;
7008 }
7009
7010 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7011 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7012 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
7013 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7014
7015 genlmsg_end(msg, hdr);
7016
7017 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7018 nl80211_mlme_mcgrp.id, gfp);
7019 return;
7020
7021 nla_put_failure:
7022 genlmsg_cancel(msg, hdr);
7023 nlmsg_free(msg);
7024 }
7025
7026 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7027 struct net_device *netdev, const u8 *addr,
7028 gfp_t gfp)
7029 {
7030 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7031 addr, gfp);
7032 }
7033
7034 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7035 struct net_device *netdev, const u8 *addr,
7036 gfp_t gfp)
7037 {
7038 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7039 addr, gfp);
7040 }
7041
7042 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7043 struct net_device *netdev, const u8 *bssid,
7044 const u8 *req_ie, size_t req_ie_len,
7045 const u8 *resp_ie, size_t resp_ie_len,
7046 u16 status, gfp_t gfp)
7047 {
7048 struct sk_buff *msg;
7049 void *hdr;
7050
7051 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7052 if (!msg)
7053 return;
7054
7055 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7056 if (!hdr) {
7057 nlmsg_free(msg);
7058 return;
7059 }
7060
7061 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7062 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7063 if (bssid)
7064 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7065 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
7066 if (req_ie)
7067 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7068 if (resp_ie)
7069 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7070
7071 genlmsg_end(msg, hdr);
7072
7073 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7074 nl80211_mlme_mcgrp.id, gfp);
7075 return;
7076
7077 nla_put_failure:
7078 genlmsg_cancel(msg, hdr);
7079 nlmsg_free(msg);
7080
7081 }
7082
7083 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7084 struct net_device *netdev, const u8 *bssid,
7085 const u8 *req_ie, size_t req_ie_len,
7086 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7087 {
7088 struct sk_buff *msg;
7089 void *hdr;
7090
7091 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7092 if (!msg)
7093 return;
7094
7095 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7096 if (!hdr) {
7097 nlmsg_free(msg);
7098 return;
7099 }
7100
7101 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7102 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7103 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7104 if (req_ie)
7105 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7106 if (resp_ie)
7107 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7108
7109 genlmsg_end(msg, hdr);
7110
7111 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7112 nl80211_mlme_mcgrp.id, gfp);
7113 return;
7114
7115 nla_put_failure:
7116 genlmsg_cancel(msg, hdr);
7117 nlmsg_free(msg);
7118
7119 }
7120
7121 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7122 struct net_device *netdev, u16 reason,
7123 const u8 *ie, size_t ie_len, bool from_ap)
7124 {
7125 struct sk_buff *msg;
7126 void *hdr;
7127
7128 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7129 if (!msg)
7130 return;
7131
7132 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7133 if (!hdr) {
7134 nlmsg_free(msg);
7135 return;
7136 }
7137
7138 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7139 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7140 if (from_ap && reason)
7141 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
7142 if (from_ap)
7143 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
7144 if (ie)
7145 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
7146
7147 genlmsg_end(msg, hdr);
7148
7149 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7150 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7151 return;
7152
7153 nla_put_failure:
7154 genlmsg_cancel(msg, hdr);
7155 nlmsg_free(msg);
7156
7157 }
7158
7159 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7160 struct net_device *netdev, const u8 *bssid,
7161 gfp_t gfp)
7162 {
7163 struct sk_buff *msg;
7164 void *hdr;
7165
7166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7167 if (!msg)
7168 return;
7169
7170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7171 if (!hdr) {
7172 nlmsg_free(msg);
7173 return;
7174 }
7175
7176 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7177 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7178 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7179
7180 genlmsg_end(msg, hdr);
7181
7182 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7183 nl80211_mlme_mcgrp.id, gfp);
7184 return;
7185
7186 nla_put_failure:
7187 genlmsg_cancel(msg, hdr);
7188 nlmsg_free(msg);
7189 }
7190
7191 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7192 struct net_device *netdev,
7193 const u8 *macaddr, const u8* ie, u8 ie_len,
7194 gfp_t gfp)
7195 {
7196 struct sk_buff *msg;
7197 void *hdr;
7198
7199 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7200 if (!msg)
7201 return;
7202
7203 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7204 if (!hdr) {
7205 nlmsg_free(msg);
7206 return;
7207 }
7208
7209 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7210 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7211 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
7212 if (ie_len && ie)
7213 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
7214
7215 genlmsg_end(msg, hdr);
7216
7217 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7218 nl80211_mlme_mcgrp.id, gfp);
7219 return;
7220
7221 nla_put_failure:
7222 genlmsg_cancel(msg, hdr);
7223 nlmsg_free(msg);
7224 }
7225
7226 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7227 struct net_device *netdev, const u8 *addr,
7228 enum nl80211_key_type key_type, int key_id,
7229 const u8 *tsc, gfp_t gfp)
7230 {
7231 struct sk_buff *msg;
7232 void *hdr;
7233
7234 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7235 if (!msg)
7236 return;
7237
7238 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7239 if (!hdr) {
7240 nlmsg_free(msg);
7241 return;
7242 }
7243
7244 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7245 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7246 if (addr)
7247 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7248 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7249 if (key_id != -1)
7250 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7251 if (tsc)
7252 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7253
7254 genlmsg_end(msg, hdr);
7255
7256 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7257 nl80211_mlme_mcgrp.id, gfp);
7258 return;
7259
7260 nla_put_failure:
7261 genlmsg_cancel(msg, hdr);
7262 nlmsg_free(msg);
7263 }
7264
7265 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7266 struct ieee80211_channel *channel_before,
7267 struct ieee80211_channel *channel_after)
7268 {
7269 struct sk_buff *msg;
7270 void *hdr;
7271 struct nlattr *nl_freq;
7272
7273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7274 if (!msg)
7275 return;
7276
7277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7278 if (!hdr) {
7279 nlmsg_free(msg);
7280 return;
7281 }
7282
7283 /*
7284 * Since we are applying the beacon hint to a wiphy we know its
7285 * wiphy_idx is valid
7286 */
7287 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7288
7289 /* Before */
7290 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7291 if (!nl_freq)
7292 goto nla_put_failure;
7293 if (nl80211_msg_put_channel(msg, channel_before))
7294 goto nla_put_failure;
7295 nla_nest_end(msg, nl_freq);
7296
7297 /* After */
7298 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7299 if (!nl_freq)
7300 goto nla_put_failure;
7301 if (nl80211_msg_put_channel(msg, channel_after))
7302 goto nla_put_failure;
7303 nla_nest_end(msg, nl_freq);
7304
7305 genlmsg_end(msg, hdr);
7306
7307 rcu_read_lock();
7308 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7309 GFP_ATOMIC);
7310 rcu_read_unlock();
7311
7312 return;
7313
7314 nla_put_failure:
7315 genlmsg_cancel(msg, hdr);
7316 nlmsg_free(msg);
7317 }
7318
7319 static void nl80211_send_remain_on_chan_event(
7320 int cmd, struct cfg80211_registered_device *rdev,
7321 struct net_device *netdev, u64 cookie,
7322 struct ieee80211_channel *chan,
7323 enum nl80211_channel_type channel_type,
7324 unsigned int duration, gfp_t gfp)
7325 {
7326 struct sk_buff *msg;
7327 void *hdr;
7328
7329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7330 if (!msg)
7331 return;
7332
7333 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7334 if (!hdr) {
7335 nlmsg_free(msg);
7336 return;
7337 }
7338
7339 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7340 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7341 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7342 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7343 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7344
7345 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7346 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7347
7348 genlmsg_end(msg, hdr);
7349
7350 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7351 nl80211_mlme_mcgrp.id, gfp);
7352 return;
7353
7354 nla_put_failure:
7355 genlmsg_cancel(msg, hdr);
7356 nlmsg_free(msg);
7357 }
7358
7359 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7360 struct net_device *netdev, u64 cookie,
7361 struct ieee80211_channel *chan,
7362 enum nl80211_channel_type channel_type,
7363 unsigned int duration, gfp_t gfp)
7364 {
7365 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7366 rdev, netdev, cookie, chan,
7367 channel_type, duration, gfp);
7368 }
7369
7370 void nl80211_send_remain_on_channel_cancel(
7371 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7372 u64 cookie, struct ieee80211_channel *chan,
7373 enum nl80211_channel_type channel_type, gfp_t gfp)
7374 {
7375 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7376 rdev, netdev, cookie, chan,
7377 channel_type, 0, gfp);
7378 }
7379
7380 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7381 struct net_device *dev, const u8 *mac_addr,
7382 struct station_info *sinfo, gfp_t gfp)
7383 {
7384 struct sk_buff *msg;
7385
7386 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7387 if (!msg)
7388 return;
7389
7390 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7391 nlmsg_free(msg);
7392 return;
7393 }
7394
7395 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7396 nl80211_mlme_mcgrp.id, gfp);
7397 }
7398
7399 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7400 struct net_device *dev, const u8 *mac_addr,
7401 gfp_t gfp)
7402 {
7403 struct sk_buff *msg;
7404 void *hdr;
7405
7406 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7407 if (!msg)
7408 return;
7409
7410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7411 if (!hdr) {
7412 nlmsg_free(msg);
7413 return;
7414 }
7415
7416 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7417 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7418
7419 genlmsg_end(msg, hdr);
7420
7421 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7422 nl80211_mlme_mcgrp.id, gfp);
7423 return;
7424
7425 nla_put_failure:
7426 genlmsg_cancel(msg, hdr);
7427 nlmsg_free(msg);
7428 }
7429
7430 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
7431 const u8 *addr, gfp_t gfp)
7432 {
7433 struct wireless_dev *wdev = dev->ieee80211_ptr;
7434 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7435 struct sk_buff *msg;
7436 void *hdr;
7437 int err;
7438 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
7439
7440 if (!nlpid)
7441 return false;
7442
7443 msg = nlmsg_new(100, gfp);
7444 if (!msg)
7445 return true;
7446
7447 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7448 if (!hdr) {
7449 nlmsg_free(msg);
7450 return true;
7451 }
7452
7453 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7454 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7455 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7456
7457 err = genlmsg_end(msg, hdr);
7458 if (err < 0) {
7459 nlmsg_free(msg);
7460 return true;
7461 }
7462
7463 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7464 return true;
7465
7466 nla_put_failure:
7467 genlmsg_cancel(msg, hdr);
7468 nlmsg_free(msg);
7469 return true;
7470 }
7471
7472 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
7473 {
7474 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
7475 addr, gfp);
7476 }
7477
7478 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
7479 const u8 *addr, gfp_t gfp)
7480 {
7481 return __nl80211_unexpected_frame(dev,
7482 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
7483 addr, gfp);
7484 }
7485
7486 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7487 struct net_device *netdev, u32 nlpid,
7488 int freq, const u8 *buf, size_t len, gfp_t gfp)
7489 {
7490 struct sk_buff *msg;
7491 void *hdr;
7492
7493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7494 if (!msg)
7495 return -ENOMEM;
7496
7497 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7498 if (!hdr) {
7499 nlmsg_free(msg);
7500 return -ENOMEM;
7501 }
7502
7503 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7504 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7505 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7506 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7507
7508 genlmsg_end(msg, hdr);
7509
7510 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7511
7512 nla_put_failure:
7513 genlmsg_cancel(msg, hdr);
7514 nlmsg_free(msg);
7515 return -ENOBUFS;
7516 }
7517
7518 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7519 struct net_device *netdev, u64 cookie,
7520 const u8 *buf, size_t len, bool ack,
7521 gfp_t gfp)
7522 {
7523 struct sk_buff *msg;
7524 void *hdr;
7525
7526 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7527 if (!msg)
7528 return;
7529
7530 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7531 if (!hdr) {
7532 nlmsg_free(msg);
7533 return;
7534 }
7535
7536 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7537 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7538 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7539 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7540 if (ack)
7541 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7542
7543 genlmsg_end(msg, hdr);
7544
7545 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7546 return;
7547
7548 nla_put_failure:
7549 genlmsg_cancel(msg, hdr);
7550 nlmsg_free(msg);
7551 }
7552
7553 void
7554 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7555 struct net_device *netdev,
7556 enum nl80211_cqm_rssi_threshold_event rssi_event,
7557 gfp_t gfp)
7558 {
7559 struct sk_buff *msg;
7560 struct nlattr *pinfoattr;
7561 void *hdr;
7562
7563 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7564 if (!msg)
7565 return;
7566
7567 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7568 if (!hdr) {
7569 nlmsg_free(msg);
7570 return;
7571 }
7572
7573 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7574 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7575
7576 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7577 if (!pinfoattr)
7578 goto nla_put_failure;
7579
7580 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7581 rssi_event);
7582
7583 nla_nest_end(msg, pinfoattr);
7584
7585 genlmsg_end(msg, hdr);
7586
7587 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7588 nl80211_mlme_mcgrp.id, gfp);
7589 return;
7590
7591 nla_put_failure:
7592 genlmsg_cancel(msg, hdr);
7593 nlmsg_free(msg);
7594 }
7595
7596 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7597 struct net_device *netdev, const u8 *bssid,
7598 const u8 *replay_ctr, gfp_t gfp)
7599 {
7600 struct sk_buff *msg;
7601 struct nlattr *rekey_attr;
7602 void *hdr;
7603
7604 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7605 if (!msg)
7606 return;
7607
7608 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7609 if (!hdr) {
7610 nlmsg_free(msg);
7611 return;
7612 }
7613
7614 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7615 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7616 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7617
7618 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7619 if (!rekey_attr)
7620 goto nla_put_failure;
7621
7622 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7623 NL80211_REPLAY_CTR_LEN, replay_ctr);
7624
7625 nla_nest_end(msg, rekey_attr);
7626
7627 genlmsg_end(msg, hdr);
7628
7629 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7630 nl80211_mlme_mcgrp.id, gfp);
7631 return;
7632
7633 nla_put_failure:
7634 genlmsg_cancel(msg, hdr);
7635 nlmsg_free(msg);
7636 }
7637
7638 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7639 struct net_device *netdev, int index,
7640 const u8 *bssid, bool preauth, gfp_t gfp)
7641 {
7642 struct sk_buff *msg;
7643 struct nlattr *attr;
7644 void *hdr;
7645
7646 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7647 if (!msg)
7648 return;
7649
7650 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7651 if (!hdr) {
7652 nlmsg_free(msg);
7653 return;
7654 }
7655
7656 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7657 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7658
7659 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7660 if (!attr)
7661 goto nla_put_failure;
7662
7663 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7664 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7665 if (preauth)
7666 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7667
7668 nla_nest_end(msg, attr);
7669
7670 genlmsg_end(msg, hdr);
7671
7672 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7673 nl80211_mlme_mcgrp.id, gfp);
7674 return;
7675
7676 nla_put_failure:
7677 genlmsg_cancel(msg, hdr);
7678 nlmsg_free(msg);
7679 }
7680
7681 void
7682 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7683 struct net_device *netdev, const u8 *peer,
7684 u32 num_packets, gfp_t gfp)
7685 {
7686 struct sk_buff *msg;
7687 struct nlattr *pinfoattr;
7688 void *hdr;
7689
7690 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7691 if (!msg)
7692 return;
7693
7694 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7695 if (!hdr) {
7696 nlmsg_free(msg);
7697 return;
7698 }
7699
7700 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7701 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7702 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7703
7704 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7705 if (!pinfoattr)
7706 goto nla_put_failure;
7707
7708 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7709
7710 nla_nest_end(msg, pinfoattr);
7711
7712 genlmsg_end(msg, hdr);
7713
7714 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7715 nl80211_mlme_mcgrp.id, gfp);
7716 return;
7717
7718 nla_put_failure:
7719 genlmsg_cancel(msg, hdr);
7720 nlmsg_free(msg);
7721 }
7722
7723 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
7724 u64 cookie, bool acked, gfp_t gfp)
7725 {
7726 struct wireless_dev *wdev = dev->ieee80211_ptr;
7727 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7728 struct sk_buff *msg;
7729 void *hdr;
7730 int err;
7731
7732 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7733 if (!msg)
7734 return;
7735
7736 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
7737 if (!hdr) {
7738 nlmsg_free(msg);
7739 return;
7740 }
7741
7742 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7743 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7744 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7745 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7746 if (acked)
7747 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7748
7749 err = genlmsg_end(msg, hdr);
7750 if (err < 0) {
7751 nlmsg_free(msg);
7752 return;
7753 }
7754
7755 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7756 nl80211_mlme_mcgrp.id, gfp);
7757 return;
7758
7759 nla_put_failure:
7760 genlmsg_cancel(msg, hdr);
7761 nlmsg_free(msg);
7762 }
7763 EXPORT_SYMBOL(cfg80211_probe_status);
7764
7765 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
7766 const u8 *frame, size_t len,
7767 int freq, gfp_t gfp)
7768 {
7769 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
7770 struct sk_buff *msg;
7771 void *hdr;
7772 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
7773
7774 if (!nlpid)
7775 return;
7776
7777 msg = nlmsg_new(len + 100, gfp);
7778 if (!msg)
7779 return;
7780
7781 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7782 if (!hdr) {
7783 nlmsg_free(msg);
7784 return;
7785 }
7786
7787 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7788 if (freq)
7789 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7790 NLA_PUT(msg, NL80211_ATTR_FRAME, len, frame);
7791
7792 genlmsg_end(msg, hdr);
7793
7794 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7795 return;
7796
7797 nla_put_failure:
7798 genlmsg_cancel(msg, hdr);
7799 nlmsg_free(msg);
7800 }
7801 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
7802
7803 static int nl80211_netlink_notify(struct notifier_block * nb,
7804 unsigned long state,
7805 void *_notify)
7806 {
7807 struct netlink_notify *notify = _notify;
7808 struct cfg80211_registered_device *rdev;
7809 struct wireless_dev *wdev;
7810
7811 if (state != NETLINK_URELEASE)
7812 return NOTIFY_DONE;
7813
7814 rcu_read_lock();
7815
7816 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
7817 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7818 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7819 if (rdev->ap_beacons_nlpid == notify->pid)
7820 rdev->ap_beacons_nlpid = 0;
7821 }
7822
7823 rcu_read_unlock();
7824
7825 return NOTIFY_DONE;
7826 }
7827
7828 static struct notifier_block nl80211_netlink_notifier = {
7829 .notifier_call = nl80211_netlink_notify,
7830 };
7831
7832 /* initialisation/exit functions */
7833
7834 int nl80211_init(void)
7835 {
7836 int err;
7837
7838 err = genl_register_family_with_ops(&nl80211_fam,
7839 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7840 if (err)
7841 return err;
7842
7843 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7844 if (err)
7845 goto err_out;
7846
7847 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7848 if (err)
7849 goto err_out;
7850
7851 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7852 if (err)
7853 goto err_out;
7854
7855 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7856 if (err)
7857 goto err_out;
7858
7859 #ifdef CONFIG_NL80211_TESTMODE
7860 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7861 if (err)
7862 goto err_out;
7863 #endif
7864
7865 err = netlink_register_notifier(&nl80211_netlink_notifier);
7866 if (err)
7867 goto err_out;
7868
7869 return 0;
7870 err_out:
7871 genl_unregister_family(&nl80211_fam);
7872 return err;
7873 }
7874
7875 void nl80211_exit(void)
7876 {
7877 netlink_unregister_notifier(&nl80211_netlink_notifier);
7878 genl_unregister_family(&nl80211_fam);
7879 }
Linux kernel - Deliverables
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