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nl80211: fix HT capability attribute validation
[linux-2.6.git] / net / wireless / nl80211.c
blobb587857a9d7d17fb02f87be44a75c2fe59958d23
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .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 };
200
201 /* policy for the key attributes */
202 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
203 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
204 [NL80211_KEY_IDX] = { .type = NLA_U8 },
205 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
206 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
207 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
208 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
209 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
210 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
211 };
212
213 /* policy for the key default flags */
214 static const struct nla_policy
215 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
216 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
217 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
218 };
219
220 /* policy for WoWLAN attributes */
221 static const struct nla_policy
222 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
223 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
224 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
225 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
226 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
227 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
228 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
229 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
230 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
231 };
232
233 /* policy for GTK rekey offload attributes */
234 static const struct nla_policy
235 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
236 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
237 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
238 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
239 };
240
241 static const struct nla_policy
242 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
243 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
244 .len = IEEE80211_MAX_SSID_LEN },
245 };
246
247 /* ifidx get helper */
248 static int nl80211_get_ifidx(struct netlink_callback *cb)
249 {
250 int res;
251
252 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
253 nl80211_fam.attrbuf, nl80211_fam.maxattr,
254 nl80211_policy);
255 if (res)
256 return res;
257
258 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
259 return -EINVAL;
260
261 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
262 if (!res)
263 return -EINVAL;
264 return res;
265 }
266
267 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
268 struct netlink_callback *cb,
269 struct cfg80211_registered_device **rdev,
270 struct net_device **dev)
271 {
272 int ifidx = cb->args[0];
273 int err;
274
275 if (!ifidx)
276 ifidx = nl80211_get_ifidx(cb);
277 if (ifidx < 0)
278 return ifidx;
279
280 cb->args[0] = ifidx;
281
282 rtnl_lock();
283
284 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
285 if (!*dev) {
286 err = -ENODEV;
287 goto out_rtnl;
288 }
289
290 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
291 if (IS_ERR(*rdev)) {
292 err = PTR_ERR(*rdev);
293 goto out_rtnl;
294 }
295
296 return 0;
297 out_rtnl:
298 rtnl_unlock();
299 return err;
300 }
301
302 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
303 {
304 cfg80211_unlock_rdev(rdev);
305 rtnl_unlock();
306 }
307
308 /* IE validation */
309 static bool is_valid_ie_attr(const struct nlattr *attr)
310 {
311 const u8 *pos;
312 int len;
313
314 if (!attr)
315 return true;
316
317 pos = nla_data(attr);
318 len = nla_len(attr);
319
320 while (len) {
321 u8 elemlen;
322
323 if (len < 2)
324 return false;
325 len -= 2;
326
327 elemlen = pos[1];
328 if (elemlen > len)
329 return false;
330
331 len -= elemlen;
332 pos += 2 + elemlen;
333 }
334
335 return true;
336 }
337
338 /* message building helper */
339 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
340 int flags, u8 cmd)
341 {
342 /* since there is no private header just add the generic one */
343 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
344 }
345
346 static int nl80211_msg_put_channel(struct sk_buff *msg,
347 struct ieee80211_channel *chan)
348 {
349 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
350 chan->center_freq);
351
352 if (chan->flags & IEEE80211_CHAN_DISABLED)
353 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
354 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
355 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
356 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
357 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
358 if (chan->flags & IEEE80211_CHAN_RADAR)
359 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
360
361 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
362 DBM_TO_MBM(chan->max_power));
363
364 return 0;
365
366 nla_put_failure:
367 return -ENOBUFS;
368 }
369
370 /* netlink command implementations */
371
372 struct key_parse {
373 struct key_params p;
374 int idx;
375 int type;
376 bool def, defmgmt;
377 bool def_uni, def_multi;
378 };
379
380 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
381 {
382 struct nlattr *tb[NL80211_KEY_MAX + 1];
383 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
384 nl80211_key_policy);
385 if (err)
386 return err;
387
388 k->def = !!tb[NL80211_KEY_DEFAULT];
389 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
390
391 if (k->def) {
392 k->def_uni = true;
393 k->def_multi = true;
394 }
395 if (k->defmgmt)
396 k->def_multi = true;
397
398 if (tb[NL80211_KEY_IDX])
399 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
400
401 if (tb[NL80211_KEY_DATA]) {
402 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
403 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
404 }
405
406 if (tb[NL80211_KEY_SEQ]) {
407 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
408 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
409 }
410
411 if (tb[NL80211_KEY_CIPHER])
412 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
413
414 if (tb[NL80211_KEY_TYPE]) {
415 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
416 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
417 return -EINVAL;
418 }
419
420 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
421 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
422 int err = nla_parse_nested(kdt,
423 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
424 tb[NL80211_KEY_DEFAULT_TYPES],
425 nl80211_key_default_policy);
426 if (err)
427 return err;
428
429 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
430 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
431 }
432
433 return 0;
434 }
435
436 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
437 {
438 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
439 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
440 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
441 }
442
443 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
444 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
445 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
446 }
447
448 if (info->attrs[NL80211_ATTR_KEY_IDX])
449 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
450
451 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
452 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
453
454 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
455 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
456
457 if (k->def) {
458 k->def_uni = true;
459 k->def_multi = true;
460 }
461 if (k->defmgmt)
462 k->def_multi = true;
463
464 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
465 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
466 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
467 return -EINVAL;
468 }
469
470 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
471 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
472 int err = nla_parse_nested(
473 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
474 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
475 nl80211_key_default_policy);
476 if (err)
477 return err;
478
479 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
480 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
481 }
482
483 return 0;
484 }
485
486 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
487 {
488 int err;
489
490 memset(k, 0, sizeof(*k));
491 k->idx = -1;
492 k->type = -1;
493
494 if (info->attrs[NL80211_ATTR_KEY])
495 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
496 else
497 err = nl80211_parse_key_old(info, k);
498
499 if (err)
500 return err;
501
502 if (k->def && k->defmgmt)
503 return -EINVAL;
504
505 if (k->defmgmt) {
506 if (k->def_uni || !k->def_multi)
507 return -EINVAL;
508 }
509
510 if (k->idx != -1) {
511 if (k->defmgmt) {
512 if (k->idx < 4 || k->idx > 5)
513 return -EINVAL;
514 } else if (k->def) {
515 if (k->idx < 0 || k->idx > 3)
516 return -EINVAL;
517 } else {
518 if (k->idx < 0 || k->idx > 5)
519 return -EINVAL;
520 }
521 }
522
523 return 0;
524 }
525
526 static struct cfg80211_cached_keys *
527 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
528 struct nlattr *keys)
529 {
530 struct key_parse parse;
531 struct nlattr *key;
532 struct cfg80211_cached_keys *result;
533 int rem, err, def = 0;
534
535 result = kzalloc(sizeof(*result), GFP_KERNEL);
536 if (!result)
537 return ERR_PTR(-ENOMEM);
538
539 result->def = -1;
540 result->defmgmt = -1;
541
542 nla_for_each_nested(key, keys, rem) {
543 memset(&parse, 0, sizeof(parse));
544 parse.idx = -1;
545
546 err = nl80211_parse_key_new(key, &parse);
547 if (err)
548 goto error;
549 err = -EINVAL;
550 if (!parse.p.key)
551 goto error;
552 if (parse.idx < 0 || parse.idx > 4)
553 goto error;
554 if (parse.def) {
555 if (def)
556 goto error;
557 def = 1;
558 result->def = parse.idx;
559 if (!parse.def_uni || !parse.def_multi)
560 goto error;
561 } else if (parse.defmgmt)
562 goto error;
563 err = cfg80211_validate_key_settings(rdev, &parse.p,
564 parse.idx, false, NULL);
565 if (err)
566 goto error;
567 result->params[parse.idx].cipher = parse.p.cipher;
568 result->params[parse.idx].key_len = parse.p.key_len;
569 result->params[parse.idx].key = result->data[parse.idx];
570 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
571 }
572
573 return result;
574 error:
575 kfree(result);
576 return ERR_PTR(err);
577 }
578
579 static int nl80211_key_allowed(struct wireless_dev *wdev)
580 {
581 ASSERT_WDEV_LOCK(wdev);
582
583 switch (wdev->iftype) {
584 case NL80211_IFTYPE_AP:
585 case NL80211_IFTYPE_AP_VLAN:
586 case NL80211_IFTYPE_P2P_GO:
587 case NL80211_IFTYPE_MESH_POINT:
588 break;
589 case NL80211_IFTYPE_ADHOC:
590 if (!wdev->current_bss)
591 return -ENOLINK;
592 break;
593 case NL80211_IFTYPE_STATION:
594 case NL80211_IFTYPE_P2P_CLIENT:
595 if (wdev->sme_state != CFG80211_SME_CONNECTED)
596 return -ENOLINK;
597 break;
598 default:
599 return -EINVAL;
600 }
601
602 return 0;
603 }
604
605 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
606 {
607 struct nlattr *nl_modes = nla_nest_start(msg, attr);
608 int i;
609
610 if (!nl_modes)
611 goto nla_put_failure;
612
613 i = 0;
614 while (ifmodes) {
615 if (ifmodes & 1)
616 NLA_PUT_FLAG(msg, i);
617 ifmodes >>= 1;
618 i++;
619 }
620
621 nla_nest_end(msg, nl_modes);
622 return 0;
623
624 nla_put_failure:
625 return -ENOBUFS;
626 }
627
628 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
629 struct sk_buff *msg)
630 {
631 struct nlattr *nl_combis;
632 int i, j;
633
634 nl_combis = nla_nest_start(msg,
635 NL80211_ATTR_INTERFACE_COMBINATIONS);
636 if (!nl_combis)
637 goto nla_put_failure;
638
639 for (i = 0; i < wiphy->n_iface_combinations; i++) {
640 const struct ieee80211_iface_combination *c;
641 struct nlattr *nl_combi, *nl_limits;
642
643 c = &wiphy->iface_combinations[i];
644
645 nl_combi = nla_nest_start(msg, i + 1);
646 if (!nl_combi)
647 goto nla_put_failure;
648
649 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
650 if (!nl_limits)
651 goto nla_put_failure;
652
653 for (j = 0; j < c->n_limits; j++) {
654 struct nlattr *nl_limit;
655
656 nl_limit = nla_nest_start(msg, j + 1);
657 if (!nl_limit)
658 goto nla_put_failure;
659 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
660 c->limits[j].max);
661 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
662 c->limits[j].types))
663 goto nla_put_failure;
664 nla_nest_end(msg, nl_limit);
665 }
666
667 nla_nest_end(msg, nl_limits);
668
669 if (c->beacon_int_infra_match)
670 NLA_PUT_FLAG(msg,
671 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
672 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
673 c->num_different_channels);
674 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
675 c->max_interfaces);
676
677 nla_nest_end(msg, nl_combi);
678 }
679
680 nla_nest_end(msg, nl_combis);
681
682 return 0;
683 nla_put_failure:
684 return -ENOBUFS;
685 }
686
687 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
688 struct cfg80211_registered_device *dev)
689 {
690 void *hdr;
691 struct nlattr *nl_bands, *nl_band;
692 struct nlattr *nl_freqs, *nl_freq;
693 struct nlattr *nl_rates, *nl_rate;
694 struct nlattr *nl_cmds;
695 enum ieee80211_band band;
696 struct ieee80211_channel *chan;
697 struct ieee80211_rate *rate;
698 int i;
699 const struct ieee80211_txrx_stypes *mgmt_stypes =
700 dev->wiphy.mgmt_stypes;
701
702 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
703 if (!hdr)
704 return -1;
705
706 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
707 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
708
709 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
710 cfg80211_rdev_list_generation);
711
712 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
713 dev->wiphy.retry_short);
714 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
715 dev->wiphy.retry_long);
716 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
717 dev->wiphy.frag_threshold);
718 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
719 dev->wiphy.rts_threshold);
720 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
721 dev->wiphy.coverage_class);
722 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
723 dev->wiphy.max_scan_ssids);
724 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
725 dev->wiphy.max_sched_scan_ssids);
726 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
727 dev->wiphy.max_scan_ie_len);
728 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
729 dev->wiphy.max_sched_scan_ie_len);
730 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
731 dev->wiphy.max_match_sets);
732
733 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
734 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
735 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
736 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
737 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
738 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
739 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
740 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
741 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
742 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
743 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
744 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
745
746 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
747 sizeof(u32) * dev->wiphy.n_cipher_suites,
748 dev->wiphy.cipher_suites);
749
750 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
751 dev->wiphy.max_num_pmkids);
752
753 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
754 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
755
756 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
757 dev->wiphy.available_antennas_tx);
758 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
759 dev->wiphy.available_antennas_rx);
760
761 if ((dev->wiphy.available_antennas_tx ||
762 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
763 u32 tx_ant = 0, rx_ant = 0;
764 int res;
765 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
766 if (!res) {
767 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
768 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
769 }
770 }
771
772 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
773 dev->wiphy.interface_modes))
774 goto nla_put_failure;
775
776 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
777 if (!nl_bands)
778 goto nla_put_failure;
779
780 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
781 if (!dev->wiphy.bands[band])
782 continue;
783
784 nl_band = nla_nest_start(msg, band);
785 if (!nl_band)
786 goto nla_put_failure;
787
788 /* add HT info */
789 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
790 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
791 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
792 &dev->wiphy.bands[band]->ht_cap.mcs);
793 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
794 dev->wiphy.bands[band]->ht_cap.cap);
795 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
796 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
797 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
798 dev->wiphy.bands[band]->ht_cap.ampdu_density);
799 }
800
801 /* add frequencies */
802 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
803 if (!nl_freqs)
804 goto nla_put_failure;
805
806 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
807 nl_freq = nla_nest_start(msg, i);
808 if (!nl_freq)
809 goto nla_put_failure;
810
811 chan = &dev->wiphy.bands[band]->channels[i];
812
813 if (nl80211_msg_put_channel(msg, chan))
814 goto nla_put_failure;
815
816 nla_nest_end(msg, nl_freq);
817 }
818
819 nla_nest_end(msg, nl_freqs);
820
821 /* add bitrates */
822 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
823 if (!nl_rates)
824 goto nla_put_failure;
825
826 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
827 nl_rate = nla_nest_start(msg, i);
828 if (!nl_rate)
829 goto nla_put_failure;
830
831 rate = &dev->wiphy.bands[band]->bitrates[i];
832 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
833 rate->bitrate);
834 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
835 NLA_PUT_FLAG(msg,
836 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
837
838 nla_nest_end(msg, nl_rate);
839 }
840
841 nla_nest_end(msg, nl_rates);
842
843 nla_nest_end(msg, nl_band);
844 }
845 nla_nest_end(msg, nl_bands);
846
847 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
848 if (!nl_cmds)
849 goto nla_put_failure;
850
851 i = 0;
852 #define CMD(op, n) \
853 do { \
854 if (dev->ops->op) { \
855 i++; \
856 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
857 } \
858 } while (0)
859
860 CMD(add_virtual_intf, NEW_INTERFACE);
861 CMD(change_virtual_intf, SET_INTERFACE);
862 CMD(add_key, NEW_KEY);
863 CMD(add_beacon, NEW_BEACON);
864 CMD(add_station, NEW_STATION);
865 CMD(add_mpath, NEW_MPATH);
866 CMD(update_mesh_config, SET_MESH_CONFIG);
867 CMD(change_bss, SET_BSS);
868 CMD(auth, AUTHENTICATE);
869 CMD(assoc, ASSOCIATE);
870 CMD(deauth, DEAUTHENTICATE);
871 CMD(disassoc, DISASSOCIATE);
872 CMD(join_ibss, JOIN_IBSS);
873 CMD(join_mesh, JOIN_MESH);
874 CMD(set_pmksa, SET_PMKSA);
875 CMD(del_pmksa, DEL_PMKSA);
876 CMD(flush_pmksa, FLUSH_PMKSA);
877 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
878 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
879 CMD(mgmt_tx, FRAME);
880 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
881 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
882 i++;
883 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
884 }
885 CMD(set_channel, SET_CHANNEL);
886 CMD(set_wds_peer, SET_WDS_PEER);
887 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
888 CMD(tdls_mgmt, TDLS_MGMT);
889 CMD(tdls_oper, TDLS_OPER);
890 }
891 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
892 CMD(sched_scan_start, START_SCHED_SCAN);
893
894 #undef CMD
895
896 if (dev->ops->connect || dev->ops->auth) {
897 i++;
898 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
899 }
900
901 if (dev->ops->disconnect || dev->ops->deauth) {
902 i++;
903 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
904 }
905
906 nla_nest_end(msg, nl_cmds);
907
908 if (dev->ops->remain_on_channel)
909 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
910 dev->wiphy.max_remain_on_channel_duration);
911
912 if (dev->ops->mgmt_tx_cancel_wait)
913 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
914
915 if (mgmt_stypes) {
916 u16 stypes;
917 struct nlattr *nl_ftypes, *nl_ifs;
918 enum nl80211_iftype ift;
919
920 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
921 if (!nl_ifs)
922 goto nla_put_failure;
923
924 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
925 nl_ftypes = nla_nest_start(msg, ift);
926 if (!nl_ftypes)
927 goto nla_put_failure;
928 i = 0;
929 stypes = mgmt_stypes[ift].tx;
930 while (stypes) {
931 if (stypes & 1)
932 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
933 (i << 4) | IEEE80211_FTYPE_MGMT);
934 stypes >>= 1;
935 i++;
936 }
937 nla_nest_end(msg, nl_ftypes);
938 }
939
940 nla_nest_end(msg, nl_ifs);
941
942 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
943 if (!nl_ifs)
944 goto nla_put_failure;
945
946 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
947 nl_ftypes = nla_nest_start(msg, ift);
948 if (!nl_ftypes)
949 goto nla_put_failure;
950 i = 0;
951 stypes = mgmt_stypes[ift].rx;
952 while (stypes) {
953 if (stypes & 1)
954 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
955 (i << 4) | IEEE80211_FTYPE_MGMT);
956 stypes >>= 1;
957 i++;
958 }
959 nla_nest_end(msg, nl_ftypes);
960 }
961 nla_nest_end(msg, nl_ifs);
962 }
963
964 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
965 struct nlattr *nl_wowlan;
966
967 nl_wowlan = nla_nest_start(msg,
968 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
969 if (!nl_wowlan)
970 goto nla_put_failure;
971
972 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
973 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
974 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
975 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
976 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
977 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
978 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
979 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
980 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
981 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
982 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
983 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
984 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
985 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
986 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
987 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
988 if (dev->wiphy.wowlan.n_patterns) {
989 struct nl80211_wowlan_pattern_support pat = {
990 .max_patterns = dev->wiphy.wowlan.n_patterns,
991 .min_pattern_len =
992 dev->wiphy.wowlan.pattern_min_len,
993 .max_pattern_len =
994 dev->wiphy.wowlan.pattern_max_len,
995 };
996 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
997 sizeof(pat), &pat);
998 }
999
1000 nla_nest_end(msg, nl_wowlan);
1001 }
1002
1003 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1004 dev->wiphy.software_iftypes))
1005 goto nla_put_failure;
1006
1007 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1008 goto nla_put_failure;
1009
1010 return genlmsg_end(msg, hdr);
1011
1012 nla_put_failure:
1013 genlmsg_cancel(msg, hdr);
1014 return -EMSGSIZE;
1015 }
1016
1017 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1018 {
1019 int idx = 0;
1020 int start = cb->args[0];
1021 struct cfg80211_registered_device *dev;
1022
1023 mutex_lock(&cfg80211_mutex);
1024 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1025 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1026 continue;
1027 if (++idx <= start)
1028 continue;
1029 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1030 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1031 dev) < 0) {
1032 idx--;
1033 break;
1034 }
1035 }
1036 mutex_unlock(&cfg80211_mutex);
1037
1038 cb->args[0] = idx;
1039
1040 return skb->len;
1041 }
1042
1043 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1044 {
1045 struct sk_buff *msg;
1046 struct cfg80211_registered_device *dev = info->user_ptr[0];
1047
1048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1049 if (!msg)
1050 return -ENOMEM;
1051
1052 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1053 nlmsg_free(msg);
1054 return -ENOBUFS;
1055 }
1056
1057 return genlmsg_reply(msg, info);
1058 }
1059
1060 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1061 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1062 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1063 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1064 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1065 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1066 };
1067
1068 static int parse_txq_params(struct nlattr *tb[],
1069 struct ieee80211_txq_params *txq_params)
1070 {
1071 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1072 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1073 !tb[NL80211_TXQ_ATTR_AIFS])
1074 return -EINVAL;
1075
1076 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1077 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1078 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1079 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1080 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1081
1082 return 0;
1083 }
1084
1085 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1086 {
1087 /*
1088 * You can only set the channel explicitly for AP, mesh
1089 * and WDS type interfaces; all others have their channel
1090 * managed via their respective "establish a connection"
1091 * command (connect, join, ...)
1092 *
1093 * Monitors are special as they are normally slaved to
1094 * whatever else is going on, so they behave as though
1095 * you tried setting the wiphy channel itself.
1096 */
1097 return !wdev ||
1098 wdev->iftype == NL80211_IFTYPE_AP ||
1099 wdev->iftype == NL80211_IFTYPE_WDS ||
1100 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1101 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1102 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1103 }
1104
1105 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1106 struct wireless_dev *wdev,
1107 struct genl_info *info)
1108 {
1109 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1110 u32 freq;
1111 int result;
1112
1113 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1114 return -EINVAL;
1115
1116 if (!nl80211_can_set_dev_channel(wdev))
1117 return -EOPNOTSUPP;
1118
1119 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1120 channel_type = nla_get_u32(info->attrs[
1121 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1122 if (channel_type != NL80211_CHAN_NO_HT &&
1123 channel_type != NL80211_CHAN_HT20 &&
1124 channel_type != NL80211_CHAN_HT40PLUS &&
1125 channel_type != NL80211_CHAN_HT40MINUS)
1126 return -EINVAL;
1127 }
1128
1129 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1130
1131 mutex_lock(&rdev->devlist_mtx);
1132 if (wdev) {
1133 wdev_lock(wdev);
1134 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1135 wdev_unlock(wdev);
1136 } else {
1137 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1138 }
1139 mutex_unlock(&rdev->devlist_mtx);
1140
1141 return result;
1142 }
1143
1144 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1145 {
1146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1147 struct net_device *netdev = info->user_ptr[1];
1148
1149 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1150 }
1151
1152 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1153 {
1154 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1155 struct net_device *dev = info->user_ptr[1];
1156 struct wireless_dev *wdev = dev->ieee80211_ptr;
1157 const u8 *bssid;
1158
1159 if (!info->attrs[NL80211_ATTR_MAC])
1160 return -EINVAL;
1161
1162 if (netif_running(dev))
1163 return -EBUSY;
1164
1165 if (!rdev->ops->set_wds_peer)
1166 return -EOPNOTSUPP;
1167
1168 if (wdev->iftype != NL80211_IFTYPE_WDS)
1169 return -EOPNOTSUPP;
1170
1171 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1172 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1173 }
1174
1175
1176 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1177 {
1178 struct cfg80211_registered_device *rdev;
1179 struct net_device *netdev = NULL;
1180 struct wireless_dev *wdev;
1181 int result = 0, rem_txq_params = 0;
1182 struct nlattr *nl_txq_params;
1183 u32 changed;
1184 u8 retry_short = 0, retry_long = 0;
1185 u32 frag_threshold = 0, rts_threshold = 0;
1186 u8 coverage_class = 0;
1187
1188 /*
1189 * Try to find the wiphy and netdev. Normally this
1190 * function shouldn't need the netdev, but this is
1191 * done for backward compatibility -- previously
1192 * setting the channel was done per wiphy, but now
1193 * it is per netdev. Previous userland like hostapd
1194 * also passed a netdev to set_wiphy, so that it is
1195 * possible to let that go to the right netdev!
1196 */
1197 mutex_lock(&cfg80211_mutex);
1198
1199 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1200 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1201
1202 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1203 if (netdev && netdev->ieee80211_ptr) {
1204 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1205 mutex_lock(&rdev->mtx);
1206 } else
1207 netdev = NULL;
1208 }
1209
1210 if (!netdev) {
1211 rdev = __cfg80211_rdev_from_info(info);
1212 if (IS_ERR(rdev)) {
1213 mutex_unlock(&cfg80211_mutex);
1214 return PTR_ERR(rdev);
1215 }
1216 wdev = NULL;
1217 netdev = NULL;
1218 result = 0;
1219
1220 mutex_lock(&rdev->mtx);
1221 } else if (netif_running(netdev) &&
1222 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1223 wdev = netdev->ieee80211_ptr;
1224 else
1225 wdev = NULL;
1226
1227 /*
1228 * end workaround code, by now the rdev is available
1229 * and locked, and wdev may or may not be NULL.
1230 */
1231
1232 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1233 result = cfg80211_dev_rename(
1234 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1235
1236 mutex_unlock(&cfg80211_mutex);
1237
1238 if (result)
1239 goto bad_res;
1240
1241 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1242 struct ieee80211_txq_params txq_params;
1243 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1244
1245 if (!rdev->ops->set_txq_params) {
1246 result = -EOPNOTSUPP;
1247 goto bad_res;
1248 }
1249
1250 if (!netdev) {
1251 result = -EINVAL;
1252 goto bad_res;
1253 }
1254
1255 nla_for_each_nested(nl_txq_params,
1256 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1257 rem_txq_params) {
1258 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1259 nla_data(nl_txq_params),
1260 nla_len(nl_txq_params),
1261 txq_params_policy);
1262 result = parse_txq_params(tb, &txq_params);
1263 if (result)
1264 goto bad_res;
1265
1266 result = rdev->ops->set_txq_params(&rdev->wiphy,
1267 netdev,
1268 &txq_params);
1269 if (result)
1270 goto bad_res;
1271 }
1272 }
1273
1274 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1275 result = __nl80211_set_channel(rdev, wdev, info);
1276 if (result)
1277 goto bad_res;
1278 }
1279
1280 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1281 enum nl80211_tx_power_setting type;
1282 int idx, mbm = 0;
1283
1284 if (!rdev->ops->set_tx_power) {
1285 result = -EOPNOTSUPP;
1286 goto bad_res;
1287 }
1288
1289 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1290 type = nla_get_u32(info->attrs[idx]);
1291
1292 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1293 (type != NL80211_TX_POWER_AUTOMATIC)) {
1294 result = -EINVAL;
1295 goto bad_res;
1296 }
1297
1298 if (type != NL80211_TX_POWER_AUTOMATIC) {
1299 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1300 mbm = nla_get_u32(info->attrs[idx]);
1301 }
1302
1303 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1304 if (result)
1305 goto bad_res;
1306 }
1307
1308 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1309 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1310 u32 tx_ant, rx_ant;
1311 if ((!rdev->wiphy.available_antennas_tx &&
1312 !rdev->wiphy.available_antennas_rx) ||
1313 !rdev->ops->set_antenna) {
1314 result = -EOPNOTSUPP;
1315 goto bad_res;
1316 }
1317
1318 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1319 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1320
1321 /* reject antenna configurations which don't match the
1322 * available antenna masks, except for the "all" mask */
1323 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1324 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1325 result = -EINVAL;
1326 goto bad_res;
1327 }
1328
1329 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1330 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1331
1332 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1333 if (result)
1334 goto bad_res;
1335 }
1336
1337 changed = 0;
1338
1339 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1340 retry_short = nla_get_u8(
1341 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1342 if (retry_short == 0) {
1343 result = -EINVAL;
1344 goto bad_res;
1345 }
1346 changed |= WIPHY_PARAM_RETRY_SHORT;
1347 }
1348
1349 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1350 retry_long = nla_get_u8(
1351 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1352 if (retry_long == 0) {
1353 result = -EINVAL;
1354 goto bad_res;
1355 }
1356 changed |= WIPHY_PARAM_RETRY_LONG;
1357 }
1358
1359 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1360 frag_threshold = nla_get_u32(
1361 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1362 if (frag_threshold < 256) {
1363 result = -EINVAL;
1364 goto bad_res;
1365 }
1366 if (frag_threshold != (u32) -1) {
1367 /*
1368 * Fragments (apart from the last one) are required to
1369 * have even length. Make the fragmentation code
1370 * simpler by stripping LSB should someone try to use
1371 * odd threshold value.
1372 */
1373 frag_threshold &= ~0x1;
1374 }
1375 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1376 }
1377
1378 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1379 rts_threshold = nla_get_u32(
1380 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1381 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1382 }
1383
1384 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1385 coverage_class = nla_get_u8(
1386 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1387 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1388 }
1389
1390 if (changed) {
1391 u8 old_retry_short, old_retry_long;
1392 u32 old_frag_threshold, old_rts_threshold;
1393 u8 old_coverage_class;
1394
1395 if (!rdev->ops->set_wiphy_params) {
1396 result = -EOPNOTSUPP;
1397 goto bad_res;
1398 }
1399
1400 old_retry_short = rdev->wiphy.retry_short;
1401 old_retry_long = rdev->wiphy.retry_long;
1402 old_frag_threshold = rdev->wiphy.frag_threshold;
1403 old_rts_threshold = rdev->wiphy.rts_threshold;
1404 old_coverage_class = rdev->wiphy.coverage_class;
1405
1406 if (changed & WIPHY_PARAM_RETRY_SHORT)
1407 rdev->wiphy.retry_short = retry_short;
1408 if (changed & WIPHY_PARAM_RETRY_LONG)
1409 rdev->wiphy.retry_long = retry_long;
1410 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1411 rdev->wiphy.frag_threshold = frag_threshold;
1412 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1413 rdev->wiphy.rts_threshold = rts_threshold;
1414 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1415 rdev->wiphy.coverage_class = coverage_class;
1416
1417 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1418 if (result) {
1419 rdev->wiphy.retry_short = old_retry_short;
1420 rdev->wiphy.retry_long = old_retry_long;
1421 rdev->wiphy.frag_threshold = old_frag_threshold;
1422 rdev->wiphy.rts_threshold = old_rts_threshold;
1423 rdev->wiphy.coverage_class = old_coverage_class;
1424 }
1425 }
1426
1427 bad_res:
1428 mutex_unlock(&rdev->mtx);
1429 if (netdev)
1430 dev_put(netdev);
1431 return result;
1432 }
1433
1434
1435 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1436 struct cfg80211_registered_device *rdev,
1437 struct net_device *dev)
1438 {
1439 void *hdr;
1440
1441 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1442 if (!hdr)
1443 return -1;
1444
1445 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1446 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1447 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1448 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1449
1450 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1451 rdev->devlist_generation ^
1452 (cfg80211_rdev_list_generation << 2));
1453
1454 return genlmsg_end(msg, hdr);
1455
1456 nla_put_failure:
1457 genlmsg_cancel(msg, hdr);
1458 return -EMSGSIZE;
1459 }
1460
1461 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1462 {
1463 int wp_idx = 0;
1464 int if_idx = 0;
1465 int wp_start = cb->args[0];
1466 int if_start = cb->args[1];
1467 struct cfg80211_registered_device *rdev;
1468 struct wireless_dev *wdev;
1469
1470 mutex_lock(&cfg80211_mutex);
1471 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1472 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1473 continue;
1474 if (wp_idx < wp_start) {
1475 wp_idx++;
1476 continue;
1477 }
1478 if_idx = 0;
1479
1480 mutex_lock(&rdev->devlist_mtx);
1481 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1482 if (if_idx < if_start) {
1483 if_idx++;
1484 continue;
1485 }
1486 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1487 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1488 rdev, wdev->netdev) < 0) {
1489 mutex_unlock(&rdev->devlist_mtx);
1490 goto out;
1491 }
1492 if_idx++;
1493 }
1494 mutex_unlock(&rdev->devlist_mtx);
1495
1496 wp_idx++;
1497 }
1498 out:
1499 mutex_unlock(&cfg80211_mutex);
1500
1501 cb->args[0] = wp_idx;
1502 cb->args[1] = if_idx;
1503
1504 return skb->len;
1505 }
1506
1507 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1508 {
1509 struct sk_buff *msg;
1510 struct cfg80211_registered_device *dev = info->user_ptr[0];
1511 struct net_device *netdev = info->user_ptr[1];
1512
1513 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1514 if (!msg)
1515 return -ENOMEM;
1516
1517 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1518 dev, netdev) < 0) {
1519 nlmsg_free(msg);
1520 return -ENOBUFS;
1521 }
1522
1523 return genlmsg_reply(msg, info);
1524 }
1525
1526 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1527 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1528 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1529 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1530 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1531 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1532 };
1533
1534 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1535 {
1536 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1537 int flag;
1538
1539 *mntrflags = 0;
1540
1541 if (!nla)
1542 return -EINVAL;
1543
1544 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1545 nla, mntr_flags_policy))
1546 return -EINVAL;
1547
1548 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1549 if (flags[flag])
1550 *mntrflags |= (1<<flag);
1551
1552 return 0;
1553 }
1554
1555 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1556 struct net_device *netdev, u8 use_4addr,
1557 enum nl80211_iftype iftype)
1558 {
1559 if (!use_4addr) {
1560 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1561 return -EBUSY;
1562 return 0;
1563 }
1564
1565 switch (iftype) {
1566 case NL80211_IFTYPE_AP_VLAN:
1567 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1568 return 0;
1569 break;
1570 case NL80211_IFTYPE_STATION:
1571 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1572 return 0;
1573 break;
1574 default:
1575 break;
1576 }
1577
1578 return -EOPNOTSUPP;
1579 }
1580
1581 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1582 {
1583 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1584 struct vif_params params;
1585 int err;
1586 enum nl80211_iftype otype, ntype;
1587 struct net_device *dev = info->user_ptr[1];
1588 u32 _flags, *flags = NULL;
1589 bool change = false;
1590
1591 memset(&params, 0, sizeof(params));
1592
1593 otype = ntype = dev->ieee80211_ptr->iftype;
1594
1595 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1596 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1597 if (otype != ntype)
1598 change = true;
1599 if (ntype > NL80211_IFTYPE_MAX)
1600 return -EINVAL;
1601 }
1602
1603 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1604 struct wireless_dev *wdev = dev->ieee80211_ptr;
1605
1606 if (ntype != NL80211_IFTYPE_MESH_POINT)
1607 return -EINVAL;
1608 if (netif_running(dev))
1609 return -EBUSY;
1610
1611 wdev_lock(wdev);
1612 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1613 IEEE80211_MAX_MESH_ID_LEN);
1614 wdev->mesh_id_up_len =
1615 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1616 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1617 wdev->mesh_id_up_len);
1618 wdev_unlock(wdev);
1619 }
1620
1621 if (info->attrs[NL80211_ATTR_4ADDR]) {
1622 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1623 change = true;
1624 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1625 if (err)
1626 return err;
1627 } else {
1628 params.use_4addr = -1;
1629 }
1630
1631 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1632 if (ntype != NL80211_IFTYPE_MONITOR)
1633 return -EINVAL;
1634 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1635 &_flags);
1636 if (err)
1637 return err;
1638
1639 flags = &_flags;
1640 change = true;
1641 }
1642
1643 if (change)
1644 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1645 else
1646 err = 0;
1647
1648 if (!err && params.use_4addr != -1)
1649 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1650
1651 return err;
1652 }
1653
1654 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1655 {
1656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1657 struct vif_params params;
1658 struct net_device *dev;
1659 int err;
1660 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1661 u32 flags;
1662
1663 memset(&params, 0, sizeof(params));
1664
1665 if (!info->attrs[NL80211_ATTR_IFNAME])
1666 return -EINVAL;
1667
1668 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1669 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1670 if (type > NL80211_IFTYPE_MAX)
1671 return -EINVAL;
1672 }
1673
1674 if (!rdev->ops->add_virtual_intf ||
1675 !(rdev->wiphy.interface_modes & (1 << type)))
1676 return -EOPNOTSUPP;
1677
1678 if (info->attrs[NL80211_ATTR_4ADDR]) {
1679 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1680 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1681 if (err)
1682 return err;
1683 }
1684
1685 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1686 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1687 &flags);
1688 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1689 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1690 type, err ? NULL : &flags, &params);
1691 if (IS_ERR(dev))
1692 return PTR_ERR(dev);
1693
1694 if (type == NL80211_IFTYPE_MESH_POINT &&
1695 info->attrs[NL80211_ATTR_MESH_ID]) {
1696 struct wireless_dev *wdev = dev->ieee80211_ptr;
1697
1698 wdev_lock(wdev);
1699 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1700 IEEE80211_MAX_MESH_ID_LEN);
1701 wdev->mesh_id_up_len =
1702 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1703 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1704 wdev->mesh_id_up_len);
1705 wdev_unlock(wdev);
1706 }
1707
1708 return 0;
1709 }
1710
1711 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1712 {
1713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1714 struct net_device *dev = info->user_ptr[1];
1715
1716 if (!rdev->ops->del_virtual_intf)
1717 return -EOPNOTSUPP;
1718
1719 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1720 }
1721
1722 struct get_key_cookie {
1723 struct sk_buff *msg;
1724 int error;
1725 int idx;
1726 };
1727
1728 static void get_key_callback(void *c, struct key_params *params)
1729 {
1730 struct nlattr *key;
1731 struct get_key_cookie *cookie = c;
1732
1733 if (params->key)
1734 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1735 params->key_len, params->key);
1736
1737 if (params->seq)
1738 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1739 params->seq_len, params->seq);
1740
1741 if (params->cipher)
1742 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1743 params->cipher);
1744
1745 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1746 if (!key)
1747 goto nla_put_failure;
1748
1749 if (params->key)
1750 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1751 params->key_len, params->key);
1752
1753 if (params->seq)
1754 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1755 params->seq_len, params->seq);
1756
1757 if (params->cipher)
1758 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1759 params->cipher);
1760
1761 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1762
1763 nla_nest_end(cookie->msg, key);
1764
1765 return;
1766 nla_put_failure:
1767 cookie->error = 1;
1768 }
1769
1770 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1771 {
1772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1773 int err;
1774 struct net_device *dev = info->user_ptr[1];
1775 u8 key_idx = 0;
1776 const u8 *mac_addr = NULL;
1777 bool pairwise;
1778 struct get_key_cookie cookie = {
1779 .error = 0,
1780 };
1781 void *hdr;
1782 struct sk_buff *msg;
1783
1784 if (info->attrs[NL80211_ATTR_KEY_IDX])
1785 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1786
1787 if (key_idx > 5)
1788 return -EINVAL;
1789
1790 if (info->attrs[NL80211_ATTR_MAC])
1791 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1792
1793 pairwise = !!mac_addr;
1794 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1795 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1796 if (kt >= NUM_NL80211_KEYTYPES)
1797 return -EINVAL;
1798 if (kt != NL80211_KEYTYPE_GROUP &&
1799 kt != NL80211_KEYTYPE_PAIRWISE)
1800 return -EINVAL;
1801 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1802 }
1803
1804 if (!rdev->ops->get_key)
1805 return -EOPNOTSUPP;
1806
1807 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1808 if (!msg)
1809 return -ENOMEM;
1810
1811 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1812 NL80211_CMD_NEW_KEY);
1813 if (IS_ERR(hdr))
1814 return PTR_ERR(hdr);
1815
1816 cookie.msg = msg;
1817 cookie.idx = key_idx;
1818
1819 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1820 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1821 if (mac_addr)
1822 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1823
1824 if (pairwise && mac_addr &&
1825 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1826 return -ENOENT;
1827
1828 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1829 mac_addr, &cookie, get_key_callback);
1830
1831 if (err)
1832 goto free_msg;
1833
1834 if (cookie.error)
1835 goto nla_put_failure;
1836
1837 genlmsg_end(msg, hdr);
1838 return genlmsg_reply(msg, info);
1839
1840 nla_put_failure:
1841 err = -ENOBUFS;
1842 free_msg:
1843 nlmsg_free(msg);
1844 return err;
1845 }
1846
1847 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1848 {
1849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1850 struct key_parse key;
1851 int err;
1852 struct net_device *dev = info->user_ptr[1];
1853
1854 err = nl80211_parse_key(info, &key);
1855 if (err)
1856 return err;
1857
1858 if (key.idx < 0)
1859 return -EINVAL;
1860
1861 /* only support setting default key */
1862 if (!key.def && !key.defmgmt)
1863 return -EINVAL;
1864
1865 wdev_lock(dev->ieee80211_ptr);
1866
1867 if (key.def) {
1868 if (!rdev->ops->set_default_key) {
1869 err = -EOPNOTSUPP;
1870 goto out;
1871 }
1872
1873 err = nl80211_key_allowed(dev->ieee80211_ptr);
1874 if (err)
1875 goto out;
1876
1877 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1878 key.def_uni, key.def_multi);
1879
1880 if (err)
1881 goto out;
1882
1883 #ifdef CONFIG_CFG80211_WEXT
1884 dev->ieee80211_ptr->wext.default_key = key.idx;
1885 #endif
1886 } else {
1887 if (key.def_uni || !key.def_multi) {
1888 err = -EINVAL;
1889 goto out;
1890 }
1891
1892 if (!rdev->ops->set_default_mgmt_key) {
1893 err = -EOPNOTSUPP;
1894 goto out;
1895 }
1896
1897 err = nl80211_key_allowed(dev->ieee80211_ptr);
1898 if (err)
1899 goto out;
1900
1901 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1902 dev, key.idx);
1903 if (err)
1904 goto out;
1905
1906 #ifdef CONFIG_CFG80211_WEXT
1907 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1908 #endif
1909 }
1910
1911 out:
1912 wdev_unlock(dev->ieee80211_ptr);
1913
1914 return err;
1915 }
1916
1917 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1918 {
1919 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1920 int err;
1921 struct net_device *dev = info->user_ptr[1];
1922 struct key_parse key;
1923 const u8 *mac_addr = NULL;
1924
1925 err = nl80211_parse_key(info, &key);
1926 if (err)
1927 return err;
1928
1929 if (!key.p.key)
1930 return -EINVAL;
1931
1932 if (info->attrs[NL80211_ATTR_MAC])
1933 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1934
1935 if (key.type == -1) {
1936 if (mac_addr)
1937 key.type = NL80211_KEYTYPE_PAIRWISE;
1938 else
1939 key.type = NL80211_KEYTYPE_GROUP;
1940 }
1941
1942 /* for now */
1943 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1944 key.type != NL80211_KEYTYPE_GROUP)
1945 return -EINVAL;
1946
1947 if (!rdev->ops->add_key)
1948 return -EOPNOTSUPP;
1949
1950 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1951 key.type == NL80211_KEYTYPE_PAIRWISE,
1952 mac_addr))
1953 return -EINVAL;
1954
1955 wdev_lock(dev->ieee80211_ptr);
1956 err = nl80211_key_allowed(dev->ieee80211_ptr);
1957 if (!err)
1958 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1959 key.type == NL80211_KEYTYPE_PAIRWISE,
1960 mac_addr, &key.p);
1961 wdev_unlock(dev->ieee80211_ptr);
1962
1963 return err;
1964 }
1965
1966 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1967 {
1968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1969 int err;
1970 struct net_device *dev = info->user_ptr[1];
1971 u8 *mac_addr = NULL;
1972 struct key_parse key;
1973
1974 err = nl80211_parse_key(info, &key);
1975 if (err)
1976 return err;
1977
1978 if (info->attrs[NL80211_ATTR_MAC])
1979 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1980
1981 if (key.type == -1) {
1982 if (mac_addr)
1983 key.type = NL80211_KEYTYPE_PAIRWISE;
1984 else
1985 key.type = NL80211_KEYTYPE_GROUP;
1986 }
1987
1988 /* for now */
1989 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1990 key.type != NL80211_KEYTYPE_GROUP)
1991 return -EINVAL;
1992
1993 if (!rdev->ops->del_key)
1994 return -EOPNOTSUPP;
1995
1996 wdev_lock(dev->ieee80211_ptr);
1997 err = nl80211_key_allowed(dev->ieee80211_ptr);
1998
1999 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2000 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2001 err = -ENOENT;
2002
2003 if (!err)
2004 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2005 key.type == NL80211_KEYTYPE_PAIRWISE,
2006 mac_addr);
2007
2008 #ifdef CONFIG_CFG80211_WEXT
2009 if (!err) {
2010 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2011 dev->ieee80211_ptr->wext.default_key = -1;
2012 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2013 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2014 }
2015 #endif
2016 wdev_unlock(dev->ieee80211_ptr);
2017
2018 return err;
2019 }
2020
2021 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2022 {
2023 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2024 struct beacon_parameters *info);
2025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2026 struct net_device *dev = info->user_ptr[1];
2027 struct wireless_dev *wdev = dev->ieee80211_ptr;
2028 struct beacon_parameters params;
2029 int haveinfo = 0, err;
2030
2031 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2032 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2033 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2034 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2035 return -EINVAL;
2036
2037 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2038 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2039 return -EOPNOTSUPP;
2040
2041 memset(&params, 0, sizeof(params));
2042
2043 switch (info->genlhdr->cmd) {
2044 case NL80211_CMD_NEW_BEACON:
2045 /* these are required for NEW_BEACON */
2046 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2047 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2048 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2049 return -EINVAL;
2050
2051 params.interval =
2052 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2053 params.dtim_period =
2054 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2055
2056 err = cfg80211_validate_beacon_int(rdev, params.interval);
2057 if (err)
2058 return err;
2059
2060 /*
2061 * In theory, some of these attributes could be required for
2062 * NEW_BEACON, but since they were not used when the command was
2063 * originally added, keep them optional for old user space
2064 * programs to work with drivers that do not need the additional
2065 * information.
2066 */
2067 if (info->attrs[NL80211_ATTR_SSID]) {
2068 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2069 params.ssid_len =
2070 nla_len(info->attrs[NL80211_ATTR_SSID]);
2071 if (params.ssid_len == 0 ||
2072 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2073 return -EINVAL;
2074 }
2075
2076 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2077 params.hidden_ssid = nla_get_u32(
2078 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2079 if (params.hidden_ssid !=
2080 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2081 params.hidden_ssid !=
2082 NL80211_HIDDEN_SSID_ZERO_LEN &&
2083 params.hidden_ssid !=
2084 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2085 return -EINVAL;
2086 }
2087
2088 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2089
2090 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2091 params.auth_type = nla_get_u32(
2092 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2093 if (!nl80211_valid_auth_type(params.auth_type))
2094 return -EINVAL;
2095 } else
2096 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2097
2098 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2099 NL80211_MAX_NR_CIPHER_SUITES);
2100 if (err)
2101 return err;
2102
2103 call = rdev->ops->add_beacon;
2104 break;
2105 case NL80211_CMD_SET_BEACON:
2106 call = rdev->ops->set_beacon;
2107 break;
2108 default:
2109 WARN_ON(1);
2110 return -EOPNOTSUPP;
2111 }
2112
2113 if (!call)
2114 return -EOPNOTSUPP;
2115
2116 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2117 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2118 params.head_len =
2119 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2120 haveinfo = 1;
2121 }
2122
2123 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2124 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2125 params.tail_len =
2126 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2127 haveinfo = 1;
2128 }
2129
2130 if (!haveinfo)
2131 return -EINVAL;
2132
2133 if (info->attrs[NL80211_ATTR_IE]) {
2134 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2135 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2136 }
2137
2138 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2139 params.proberesp_ies =
2140 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2141 params.proberesp_ies_len =
2142 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2143 }
2144
2145 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2146 params.assocresp_ies =
2147 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2148 params.assocresp_ies_len =
2149 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2150 }
2151
2152 err = call(&rdev->wiphy, dev, &params);
2153 if (!err && params.interval)
2154 wdev->beacon_interval = params.interval;
2155 return err;
2156 }
2157
2158 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2159 {
2160 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2161 struct net_device *dev = info->user_ptr[1];
2162 struct wireless_dev *wdev = dev->ieee80211_ptr;
2163 int err;
2164
2165 if (!rdev->ops->del_beacon)
2166 return -EOPNOTSUPP;
2167
2168 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2169 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2170 return -EOPNOTSUPP;
2171
2172 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2173 if (!err)
2174 wdev->beacon_interval = 0;
2175 return err;
2176 }
2177
2178 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2179 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2180 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2181 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2182 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2183 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2184 };
2185
2186 static int parse_station_flags(struct genl_info *info,
2187 struct station_parameters *params)
2188 {
2189 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2190 struct nlattr *nla;
2191 int flag;
2192
2193 /*
2194 * Try parsing the new attribute first so userspace
2195 * can specify both for older kernels.
2196 */
2197 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2198 if (nla) {
2199 struct nl80211_sta_flag_update *sta_flags;
2200
2201 sta_flags = nla_data(nla);
2202 params->sta_flags_mask = sta_flags->mask;
2203 params->sta_flags_set = sta_flags->set;
2204 if ((params->sta_flags_mask |
2205 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2206 return -EINVAL;
2207 return 0;
2208 }
2209
2210 /* if present, parse the old attribute */
2211
2212 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2213 if (!nla)
2214 return 0;
2215
2216 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2217 nla, sta_flags_policy))
2218 return -EINVAL;
2219
2220 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2221 params->sta_flags_mask &= ~1;
2222
2223 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2224 if (flags[flag])
2225 params->sta_flags_set |= (1<<flag);
2226
2227 return 0;
2228 }
2229
2230 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2231 int attr)
2232 {
2233 struct nlattr *rate;
2234 u16 bitrate;
2235
2236 rate = nla_nest_start(msg, attr);
2237 if (!rate)
2238 goto nla_put_failure;
2239
2240 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2241 bitrate = cfg80211_calculate_bitrate(info);
2242 if (bitrate > 0)
2243 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2244
2245 if (info->flags & RATE_INFO_FLAGS_MCS)
2246 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2247 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2248 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2249 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2250 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2251
2252 nla_nest_end(msg, rate);
2253 return true;
2254
2255 nla_put_failure:
2256 return false;
2257 }
2258
2259 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2260 int flags, struct net_device *dev,
2261 const u8 *mac_addr, struct station_info *sinfo)
2262 {
2263 void *hdr;
2264 struct nlattr *sinfoattr, *bss_param;
2265
2266 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2267 if (!hdr)
2268 return -1;
2269
2270 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2271 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2272
2273 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2274
2275 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2276 if (!sinfoattr)
2277 goto nla_put_failure;
2278 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2279 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2280 sinfo->connected_time);
2281 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2282 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2283 sinfo->inactive_time);
2284 if (sinfo->filled & STATION_INFO_RX_BYTES)
2285 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2286 sinfo->rx_bytes);
2287 if (sinfo->filled & STATION_INFO_TX_BYTES)
2288 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2289 sinfo->tx_bytes);
2290 if (sinfo->filled & STATION_INFO_LLID)
2291 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2292 sinfo->llid);
2293 if (sinfo->filled & STATION_INFO_PLID)
2294 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2295 sinfo->plid);
2296 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2297 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2298 sinfo->plink_state);
2299 if (sinfo->filled & STATION_INFO_SIGNAL)
2300 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2301 sinfo->signal);
2302 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2303 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2304 sinfo->signal_avg);
2305 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2306 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2307 NL80211_STA_INFO_TX_BITRATE))
2308 goto nla_put_failure;
2309 }
2310 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2311 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2312 NL80211_STA_INFO_RX_BITRATE))
2313 goto nla_put_failure;
2314 }
2315 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2316 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2317 sinfo->rx_packets);
2318 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2319 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2320 sinfo->tx_packets);
2321 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2322 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2323 sinfo->tx_retries);
2324 if (sinfo->filled & STATION_INFO_TX_FAILED)
2325 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2326 sinfo->tx_failed);
2327 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2328 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2329 if (!bss_param)
2330 goto nla_put_failure;
2331
2332 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2333 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2334 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2335 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2336 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2337 NLA_PUT_FLAG(msg,
2338 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2339 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2340 sinfo->bss_param.dtim_period);
2341 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2342 sinfo->bss_param.beacon_interval);
2343
2344 nla_nest_end(msg, bss_param);
2345 }
2346 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2347 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2348 sizeof(struct nl80211_sta_flag_update),
2349 &sinfo->sta_flags);
2350 nla_nest_end(msg, sinfoattr);
2351
2352 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2353 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2354 sinfo->assoc_req_ies);
2355
2356 return genlmsg_end(msg, hdr);
2357
2358 nla_put_failure:
2359 genlmsg_cancel(msg, hdr);
2360 return -EMSGSIZE;
2361 }
2362
2363 static int nl80211_dump_station(struct sk_buff *skb,
2364 struct netlink_callback *cb)
2365 {
2366 struct station_info sinfo;
2367 struct cfg80211_registered_device *dev;
2368 struct net_device *netdev;
2369 u8 mac_addr[ETH_ALEN];
2370 int sta_idx = cb->args[1];
2371 int err;
2372
2373 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2374 if (err)
2375 return err;
2376
2377 if (!dev->ops->dump_station) {
2378 err = -EOPNOTSUPP;
2379 goto out_err;
2380 }
2381
2382 while (1) {
2383 memset(&sinfo, 0, sizeof(sinfo));
2384 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2385 mac_addr, &sinfo);
2386 if (err == -ENOENT)
2387 break;
2388 if (err)
2389 goto out_err;
2390
2391 if (nl80211_send_station(skb,
2392 NETLINK_CB(cb->skb).pid,
2393 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2394 netdev, mac_addr,
2395 &sinfo) < 0)
2396 goto out;
2397
2398 sta_idx++;
2399 }
2400
2401
2402 out:
2403 cb->args[1] = sta_idx;
2404 err = skb->len;
2405 out_err:
2406 nl80211_finish_netdev_dump(dev);
2407
2408 return err;
2409 }
2410
2411 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2412 {
2413 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2414 struct net_device *dev = info->user_ptr[1];
2415 struct station_info sinfo;
2416 struct sk_buff *msg;
2417 u8 *mac_addr = NULL;
2418 int err;
2419
2420 memset(&sinfo, 0, sizeof(sinfo));
2421
2422 if (!info->attrs[NL80211_ATTR_MAC])
2423 return -EINVAL;
2424
2425 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2426
2427 if (!rdev->ops->get_station)
2428 return -EOPNOTSUPP;
2429
2430 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2431 if (err)
2432 return err;
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2439 dev, mac_addr, &sinfo) < 0) {
2440 nlmsg_free(msg);
2441 return -ENOBUFS;
2442 }
2443
2444 return genlmsg_reply(msg, info);
2445 }
2446
2447 /*
2448 * Get vlan interface making sure it is running and on the right wiphy.
2449 */
2450 static int get_vlan(struct genl_info *info,
2451 struct cfg80211_registered_device *rdev,
2452 struct net_device **vlan)
2453 {
2454 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2455 *vlan = NULL;
2456
2457 if (vlanattr) {
2458 *vlan = dev_get_by_index(genl_info_net(info),
2459 nla_get_u32(vlanattr));
2460 if (!*vlan)
2461 return -ENODEV;
2462 if (!(*vlan)->ieee80211_ptr)
2463 return -EINVAL;
2464 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2465 return -EINVAL;
2466 if (!netif_running(*vlan))
2467 return -ENETDOWN;
2468 }
2469 return 0;
2470 }
2471
2472 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2473 {
2474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2475 int err;
2476 struct net_device *dev = info->user_ptr[1];
2477 struct station_parameters params;
2478 u8 *mac_addr = NULL;
2479
2480 memset(&params, 0, sizeof(params));
2481
2482 params.listen_interval = -1;
2483 params.plink_state = -1;
2484
2485 if (info->attrs[NL80211_ATTR_STA_AID])
2486 return -EINVAL;
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 (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2494 params.supported_rates =
2495 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2496 params.supported_rates_len =
2497 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2498 }
2499
2500 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2501 params.listen_interval =
2502 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2503
2504 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2505 params.ht_capa =
2506 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2507
2508 if (parse_station_flags(info, &params))
2509 return -EINVAL;
2510
2511 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2512 params.plink_action =
2513 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2514
2515 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2516 params.plink_state =
2517 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2518
2519 err = get_vlan(info, rdev, &params.vlan);
2520 if (err)
2521 goto out;
2522
2523 /* validate settings */
2524 err = 0;
2525
2526 switch (dev->ieee80211_ptr->iftype) {
2527 case NL80211_IFTYPE_AP:
2528 case NL80211_IFTYPE_AP_VLAN:
2529 case NL80211_IFTYPE_P2P_GO:
2530 /* disallow mesh-specific things */
2531 if (params.plink_action)
2532 err = -EINVAL;
2533 break;
2534 case NL80211_IFTYPE_P2P_CLIENT:
2535 case NL80211_IFTYPE_STATION:
2536 /* disallow things sta doesn't support */
2537 if (params.plink_action)
2538 err = -EINVAL;
2539 if (params.vlan)
2540 err = -EINVAL;
2541 if (params.supported_rates &&
2542 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2543 err = -EINVAL;
2544 if (params.ht_capa)
2545 err = -EINVAL;
2546 if (params.listen_interval >= 0)
2547 err = -EINVAL;
2548 if (params.sta_flags_mask &
2549 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2550 BIT(NL80211_STA_FLAG_TDLS_PEER)))
2551 err = -EINVAL;
2552 /* can't change the TDLS bit */
2553 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2554 (params.sta_flags_mask & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2555 err = -EINVAL;
2556 break;
2557 case NL80211_IFTYPE_MESH_POINT:
2558 /* disallow things mesh doesn't support */
2559 if (params.vlan)
2560 err = -EINVAL;
2561 if (params.ht_capa)
2562 err = -EINVAL;
2563 if (params.listen_interval >= 0)
2564 err = -EINVAL;
2565 if (params.sta_flags_mask &
2566 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2567 BIT(NL80211_STA_FLAG_MFP) |
2568 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2569 err = -EINVAL;
2570 break;
2571 default:
2572 err = -EINVAL;
2573 }
2574
2575 if (err)
2576 goto out;
2577
2578 if (!rdev->ops->change_station) {
2579 err = -EOPNOTSUPP;
2580 goto out;
2581 }
2582
2583 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2584
2585 out:
2586 if (params.vlan)
2587 dev_put(params.vlan);
2588
2589 return err;
2590 }
2591
2592 static struct nla_policy
2593 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2594 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2595 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2596 };
2597
2598 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2599 {
2600 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2601 int err;
2602 struct net_device *dev = info->user_ptr[1];
2603 struct station_parameters params;
2604 u8 *mac_addr = NULL;
2605
2606 memset(&params, 0, sizeof(params));
2607
2608 if (!info->attrs[NL80211_ATTR_MAC])
2609 return -EINVAL;
2610
2611 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2612 return -EINVAL;
2613
2614 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2615 return -EINVAL;
2616
2617 if (!info->attrs[NL80211_ATTR_STA_AID])
2618 return -EINVAL;
2619
2620 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2621 params.supported_rates =
2622 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2623 params.supported_rates_len =
2624 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2625 params.listen_interval =
2626 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2627
2628 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2629 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2630 return -EINVAL;
2631
2632 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2633 params.ht_capa =
2634 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2635
2636 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2637 params.plink_action =
2638 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2639
2640 if (parse_station_flags(info, &params))
2641 return -EINVAL;
2642
2643 /* parse WME attributes if sta is WME capable */
2644 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2645 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2646 info->attrs[NL80211_ATTR_STA_WME]) {
2647 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2648 struct nlattr *nla;
2649
2650 nla = info->attrs[NL80211_ATTR_STA_WME];
2651 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2652 nl80211_sta_wme_policy);
2653 if (err)
2654 return err;
2655
2656 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2657 params.uapsd_queues =
2658 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2659 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2660 return -EINVAL;
2661
2662 if (tb[NL80211_STA_WME_MAX_SP])
2663 params.max_sp =
2664 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2665
2666 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2667 return -EINVAL;
2668
2669 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2670 }
2671
2672 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2673 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2674 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2675 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO &&
2676 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
2677 return -EINVAL;
2678
2679 /*
2680 * Only managed stations can add TDLS peers, and only when the
2681 * wiphy supports external TDLS setup.
2682 */
2683 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION &&
2684 !((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
2685 (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2686 (rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)))
2687 return -EINVAL;
2688
2689 err = get_vlan(info, rdev, &params.vlan);
2690 if (err)
2691 goto out;
2692
2693 /* validate settings */
2694 err = 0;
2695
2696 if (!rdev->ops->add_station) {
2697 err = -EOPNOTSUPP;
2698 goto out;
2699 }
2700
2701 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2702
2703 out:
2704 if (params.vlan)
2705 dev_put(params.vlan);
2706 return err;
2707 }
2708
2709 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2710 {
2711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2712 struct net_device *dev = info->user_ptr[1];
2713 u8 *mac_addr = NULL;
2714
2715 if (info->attrs[NL80211_ATTR_MAC])
2716 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2717
2718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2719 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2720 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2721 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2722 return -EINVAL;
2723
2724 if (!rdev->ops->del_station)
2725 return -EOPNOTSUPP;
2726
2727 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2728 }
2729
2730 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2731 int flags, struct net_device *dev,
2732 u8 *dst, u8 *next_hop,
2733 struct mpath_info *pinfo)
2734 {
2735 void *hdr;
2736 struct nlattr *pinfoattr;
2737
2738 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2739 if (!hdr)
2740 return -1;
2741
2742 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2743 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2744 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2745
2746 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2747
2748 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2749 if (!pinfoattr)
2750 goto nla_put_failure;
2751 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2752 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2753 pinfo->frame_qlen);
2754 if (pinfo->filled & MPATH_INFO_SN)
2755 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2756 pinfo->sn);
2757 if (pinfo->filled & MPATH_INFO_METRIC)
2758 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2759 pinfo->metric);
2760 if (pinfo->filled & MPATH_INFO_EXPTIME)
2761 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2762 pinfo->exptime);
2763 if (pinfo->filled & MPATH_INFO_FLAGS)
2764 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2765 pinfo->flags);
2766 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2767 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2768 pinfo->discovery_timeout);
2769 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2770 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2771 pinfo->discovery_retries);
2772
2773 nla_nest_end(msg, pinfoattr);
2774
2775 return genlmsg_end(msg, hdr);
2776
2777 nla_put_failure:
2778 genlmsg_cancel(msg, hdr);
2779 return -EMSGSIZE;
2780 }
2781
2782 static int nl80211_dump_mpath(struct sk_buff *skb,
2783 struct netlink_callback *cb)
2784 {
2785 struct mpath_info pinfo;
2786 struct cfg80211_registered_device *dev;
2787 struct net_device *netdev;
2788 u8 dst[ETH_ALEN];
2789 u8 next_hop[ETH_ALEN];
2790 int path_idx = cb->args[1];
2791 int err;
2792
2793 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2794 if (err)
2795 return err;
2796
2797 if (!dev->ops->dump_mpath) {
2798 err = -EOPNOTSUPP;
2799 goto out_err;
2800 }
2801
2802 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2803 err = -EOPNOTSUPP;
2804 goto out_err;
2805 }
2806
2807 while (1) {
2808 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2809 dst, next_hop, &pinfo);
2810 if (err == -ENOENT)
2811 break;
2812 if (err)
2813 goto out_err;
2814
2815 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2816 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2817 netdev, dst, next_hop,
2818 &pinfo) < 0)
2819 goto out;
2820
2821 path_idx++;
2822 }
2823
2824
2825 out:
2826 cb->args[1] = path_idx;
2827 err = skb->len;
2828 out_err:
2829 nl80211_finish_netdev_dump(dev);
2830 return err;
2831 }
2832
2833 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2834 {
2835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2836 int err;
2837 struct net_device *dev = info->user_ptr[1];
2838 struct mpath_info pinfo;
2839 struct sk_buff *msg;
2840 u8 *dst = NULL;
2841 u8 next_hop[ETH_ALEN];
2842
2843 memset(&pinfo, 0, sizeof(pinfo));
2844
2845 if (!info->attrs[NL80211_ATTR_MAC])
2846 return -EINVAL;
2847
2848 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2849
2850 if (!rdev->ops->get_mpath)
2851 return -EOPNOTSUPP;
2852
2853 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2854 return -EOPNOTSUPP;
2855
2856 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2857 if (err)
2858 return err;
2859
2860 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2861 if (!msg)
2862 return -ENOMEM;
2863
2864 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2865 dev, dst, next_hop, &pinfo) < 0) {
2866 nlmsg_free(msg);
2867 return -ENOBUFS;
2868 }
2869
2870 return genlmsg_reply(msg, info);
2871 }
2872
2873 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2874 {
2875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2876 struct net_device *dev = info->user_ptr[1];
2877 u8 *dst = NULL;
2878 u8 *next_hop = NULL;
2879
2880 if (!info->attrs[NL80211_ATTR_MAC])
2881 return -EINVAL;
2882
2883 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2884 return -EINVAL;
2885
2886 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2887 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2888
2889 if (!rdev->ops->change_mpath)
2890 return -EOPNOTSUPP;
2891
2892 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2893 return -EOPNOTSUPP;
2894
2895 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2896 }
2897
2898 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2899 {
2900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901 struct net_device *dev = info->user_ptr[1];
2902 u8 *dst = NULL;
2903 u8 *next_hop = NULL;
2904
2905 if (!info->attrs[NL80211_ATTR_MAC])
2906 return -EINVAL;
2907
2908 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2909 return -EINVAL;
2910
2911 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2912 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2913
2914 if (!rdev->ops->add_mpath)
2915 return -EOPNOTSUPP;
2916
2917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2918 return -EOPNOTSUPP;
2919
2920 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2921 }
2922
2923 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2924 {
2925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2926 struct net_device *dev = info->user_ptr[1];
2927 u8 *dst = NULL;
2928
2929 if (info->attrs[NL80211_ATTR_MAC])
2930 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2931
2932 if (!rdev->ops->del_mpath)
2933 return -EOPNOTSUPP;
2934
2935 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2936 }
2937
2938 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2939 {
2940 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2941 struct net_device *dev = info->user_ptr[1];
2942 struct bss_parameters params;
2943
2944 memset(&params, 0, sizeof(params));
2945 /* default to not changing parameters */
2946 params.use_cts_prot = -1;
2947 params.use_short_preamble = -1;
2948 params.use_short_slot_time = -1;
2949 params.ap_isolate = -1;
2950 params.ht_opmode = -1;
2951
2952 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2953 params.use_cts_prot =
2954 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2955 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2956 params.use_short_preamble =
2957 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2958 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2959 params.use_short_slot_time =
2960 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2961 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2962 params.basic_rates =
2963 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2964 params.basic_rates_len =
2965 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2966 }
2967 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2968 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2969 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2970 params.ht_opmode =
2971 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2972
2973 if (!rdev->ops->change_bss)
2974 return -EOPNOTSUPP;
2975
2976 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2977 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2978 return -EOPNOTSUPP;
2979
2980 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2981 }
2982
2983 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2984 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2985 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2986 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2987 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2988 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2989 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2990 };
2991
2992 static int parse_reg_rule(struct nlattr *tb[],
2993 struct ieee80211_reg_rule *reg_rule)
2994 {
2995 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2996 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2997
2998 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2999 return -EINVAL;
3000 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3001 return -EINVAL;
3002 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3003 return -EINVAL;
3004 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3005 return -EINVAL;
3006 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3007 return -EINVAL;
3008
3009 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3010
3011 freq_range->start_freq_khz =
3012 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3013 freq_range->end_freq_khz =
3014 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3015 freq_range->max_bandwidth_khz =
3016 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3017
3018 power_rule->max_eirp =
3019 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3020
3021 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3022 power_rule->max_antenna_gain =
3023 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3024
3025 return 0;
3026 }
3027
3028 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3029 {
3030 int r;
3031 char *data = NULL;
3032
3033 /*
3034 * You should only get this when cfg80211 hasn't yet initialized
3035 * completely when built-in to the kernel right between the time
3036 * window between nl80211_init() and regulatory_init(), if that is
3037 * even possible.
3038 */
3039 mutex_lock(&cfg80211_mutex);
3040 if (unlikely(!cfg80211_regdomain)) {
3041 mutex_unlock(&cfg80211_mutex);
3042 return -EINPROGRESS;
3043 }
3044 mutex_unlock(&cfg80211_mutex);
3045
3046 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3047 return -EINVAL;
3048
3049 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3050
3051 r = regulatory_hint_user(data);
3052
3053 return r;
3054 }
3055
3056 static int nl80211_get_mesh_config(struct sk_buff *skb,
3057 struct genl_info *info)
3058 {
3059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3060 struct net_device *dev = info->user_ptr[1];
3061 struct wireless_dev *wdev = dev->ieee80211_ptr;
3062 struct mesh_config cur_params;
3063 int err = 0;
3064 void *hdr;
3065 struct nlattr *pinfoattr;
3066 struct sk_buff *msg;
3067
3068 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3069 return -EOPNOTSUPP;
3070
3071 if (!rdev->ops->get_mesh_config)
3072 return -EOPNOTSUPP;
3073
3074 wdev_lock(wdev);
3075 /* If not connected, get default parameters */
3076 if (!wdev->mesh_id_len)
3077 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3078 else
3079 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3080 &cur_params);
3081 wdev_unlock(wdev);
3082
3083 if (err)
3084 return err;
3085
3086 /* Draw up a netlink message to send back */
3087 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3088 if (!msg)
3089 return -ENOMEM;
3090 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3091 NL80211_CMD_GET_MESH_CONFIG);
3092 if (!hdr)
3093 goto out;
3094 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3095 if (!pinfoattr)
3096 goto nla_put_failure;
3097 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3098 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3099 cur_params.dot11MeshRetryTimeout);
3100 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3101 cur_params.dot11MeshConfirmTimeout);
3102 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3103 cur_params.dot11MeshHoldingTimeout);
3104 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3105 cur_params.dot11MeshMaxPeerLinks);
3106 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3107 cur_params.dot11MeshMaxRetries);
3108 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3109 cur_params.dot11MeshTTL);
3110 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3111 cur_params.element_ttl);
3112 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3113 cur_params.auto_open_plinks);
3114 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3115 cur_params.dot11MeshHWMPmaxPREQretries);
3116 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3117 cur_params.path_refresh_time);
3118 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3119 cur_params.min_discovery_timeout);
3120 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3121 cur_params.dot11MeshHWMPactivePathTimeout);
3122 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3123 cur_params.dot11MeshHWMPpreqMinInterval);
3124 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3125 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3126 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3127 cur_params.dot11MeshHWMPRootMode);
3128 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3129 cur_params.dot11MeshHWMPRannInterval);
3130 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3131 cur_params.dot11MeshGateAnnouncementProtocol);
3132 nla_nest_end(msg, pinfoattr);
3133 genlmsg_end(msg, hdr);
3134 return genlmsg_reply(msg, info);
3135
3136 nla_put_failure:
3137 genlmsg_cancel(msg, hdr);
3138 out:
3139 nlmsg_free(msg);
3140 return -ENOBUFS;
3141 }
3142
3143 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3144 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3145 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3146 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3147 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3148 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3149 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3150 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3151 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3152
3153 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3154 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3155 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3156 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3157 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3158 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3159 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3160 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3161 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3162 };
3163
3164 static const struct nla_policy
3165 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3166 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3167 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3168 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3169 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3170 .len = IEEE80211_MAX_DATA_LEN },
3171 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3172 };
3173
3174 static int nl80211_parse_mesh_config(struct genl_info *info,
3175 struct mesh_config *cfg,
3176 u32 *mask_out)
3177 {
3178 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3179 u32 mask = 0;
3180
3181 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3182 do {\
3183 if (table[attr_num]) {\
3184 cfg->param = nla_fn(table[attr_num]); \
3185 mask |= (1 << (attr_num - 1)); \
3186 } \
3187 } while (0);\
3188
3189
3190 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3191 return -EINVAL;
3192 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3193 info->attrs[NL80211_ATTR_MESH_CONFIG],
3194 nl80211_meshconf_params_policy))
3195 return -EINVAL;
3196
3197 /* This makes sure that there aren't more than 32 mesh config
3198 * parameters (otherwise our bitfield scheme would not work.) */
3199 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3200
3201 /* Fill in the params struct */
3202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3203 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3204 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3205 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3207 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3209 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3210 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3211 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3213 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3215 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3217 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3218 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3219 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3220 nla_get_u8);
3221 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3222 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3224 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3225 nla_get_u16);
3226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3227 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3228 nla_get_u32);
3229 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3230 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3231 nla_get_u16);
3232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3233 dot11MeshHWMPnetDiameterTraversalTime,
3234 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3235 nla_get_u16);
3236 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3237 dot11MeshHWMPRootMode, mask,
3238 NL80211_MESHCONF_HWMP_ROOTMODE,
3239 nla_get_u8);
3240 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3241 dot11MeshHWMPRannInterval, mask,
3242 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3243 nla_get_u16);
3244 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3245 dot11MeshGateAnnouncementProtocol, mask,
3246 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3247 nla_get_u8);
3248 if (mask_out)
3249 *mask_out = mask;
3250
3251 return 0;
3252
3253 #undef FILL_IN_MESH_PARAM_IF_SET
3254 }
3255
3256 static int nl80211_parse_mesh_setup(struct genl_info *info,
3257 struct mesh_setup *setup)
3258 {
3259 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3260
3261 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3262 return -EINVAL;
3263 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3264 info->attrs[NL80211_ATTR_MESH_SETUP],
3265 nl80211_mesh_setup_params_policy))
3266 return -EINVAL;
3267
3268 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3269 setup->path_sel_proto =
3270 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3271 IEEE80211_PATH_PROTOCOL_VENDOR :
3272 IEEE80211_PATH_PROTOCOL_HWMP;
3273
3274 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3275 setup->path_metric =
3276 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3277 IEEE80211_PATH_METRIC_VENDOR :
3278 IEEE80211_PATH_METRIC_AIRTIME;
3279
3280
3281 if (tb[NL80211_MESH_SETUP_IE]) {
3282 struct nlattr *ieattr =
3283 tb[NL80211_MESH_SETUP_IE];
3284 if (!is_valid_ie_attr(ieattr))
3285 return -EINVAL;
3286 setup->ie = nla_data(ieattr);
3287 setup->ie_len = nla_len(ieattr);
3288 }
3289 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3290 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3291
3292 return 0;
3293 }
3294
3295 static int nl80211_update_mesh_config(struct sk_buff *skb,
3296 struct genl_info *info)
3297 {
3298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3299 struct net_device *dev = info->user_ptr[1];
3300 struct wireless_dev *wdev = dev->ieee80211_ptr;
3301 struct mesh_config cfg;
3302 u32 mask;
3303 int err;
3304
3305 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3306 return -EOPNOTSUPP;
3307
3308 if (!rdev->ops->update_mesh_config)
3309 return -EOPNOTSUPP;
3310
3311 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3312 if (err)
3313 return err;
3314
3315 wdev_lock(wdev);
3316 if (!wdev->mesh_id_len)
3317 err = -ENOLINK;
3318
3319 if (!err)
3320 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3321 mask, &cfg);
3322
3323 wdev_unlock(wdev);
3324
3325 return err;
3326 }
3327
3328 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3329 {
3330 struct sk_buff *msg;
3331 void *hdr = NULL;
3332 struct nlattr *nl_reg_rules;
3333 unsigned int i;
3334 int err = -EINVAL;
3335
3336 mutex_lock(&cfg80211_mutex);
3337
3338 if (!cfg80211_regdomain)
3339 goto out;
3340
3341 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3342 if (!msg) {
3343 err = -ENOBUFS;
3344 goto out;
3345 }
3346
3347 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3348 NL80211_CMD_GET_REG);
3349 if (!hdr)
3350 goto put_failure;
3351
3352 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3353 cfg80211_regdomain->alpha2);
3354
3355 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3356 if (!nl_reg_rules)
3357 goto nla_put_failure;
3358
3359 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3360 struct nlattr *nl_reg_rule;
3361 const struct ieee80211_reg_rule *reg_rule;
3362 const struct ieee80211_freq_range *freq_range;
3363 const struct ieee80211_power_rule *power_rule;
3364
3365 reg_rule = &cfg80211_regdomain->reg_rules[i];
3366 freq_range = &reg_rule->freq_range;
3367 power_rule = &reg_rule->power_rule;
3368
3369 nl_reg_rule = nla_nest_start(msg, i);
3370 if (!nl_reg_rule)
3371 goto nla_put_failure;
3372
3373 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3374 reg_rule->flags);
3375 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3376 freq_range->start_freq_khz);
3377 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3378 freq_range->end_freq_khz);
3379 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3380 freq_range->max_bandwidth_khz);
3381 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3382 power_rule->max_antenna_gain);
3383 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3384 power_rule->max_eirp);
3385
3386 nla_nest_end(msg, nl_reg_rule);
3387 }
3388
3389 nla_nest_end(msg, nl_reg_rules);
3390
3391 genlmsg_end(msg, hdr);
3392 err = genlmsg_reply(msg, info);
3393 goto out;
3394
3395 nla_put_failure:
3396 genlmsg_cancel(msg, hdr);
3397 put_failure:
3398 nlmsg_free(msg);
3399 err = -EMSGSIZE;
3400 out:
3401 mutex_unlock(&cfg80211_mutex);
3402 return err;
3403 }
3404
3405 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3406 {
3407 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3408 struct nlattr *nl_reg_rule;
3409 char *alpha2 = NULL;
3410 int rem_reg_rules = 0, r = 0;
3411 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3412 struct ieee80211_regdomain *rd = NULL;
3413
3414 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3415 return -EINVAL;
3416
3417 if (!info->attrs[NL80211_ATTR_REG_RULES])
3418 return -EINVAL;
3419
3420 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3421
3422 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3423 rem_reg_rules) {
3424 num_rules++;
3425 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3426 return -EINVAL;
3427 }
3428
3429 mutex_lock(&cfg80211_mutex);
3430
3431 if (!reg_is_valid_request(alpha2)) {
3432 r = -EINVAL;
3433 goto bad_reg;
3434 }
3435
3436 size_of_regd = sizeof(struct ieee80211_regdomain) +
3437 (num_rules * sizeof(struct ieee80211_reg_rule));
3438
3439 rd = kzalloc(size_of_regd, GFP_KERNEL);
3440 if (!rd) {
3441 r = -ENOMEM;
3442 goto bad_reg;
3443 }
3444
3445 rd->n_reg_rules = num_rules;
3446 rd->alpha2[0] = alpha2[0];
3447 rd->alpha2[1] = alpha2[1];
3448
3449 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3450 rem_reg_rules) {
3451 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3452 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3453 reg_rule_policy);
3454 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3455 if (r)
3456 goto bad_reg;
3457
3458 rule_idx++;
3459
3460 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3461 r = -EINVAL;
3462 goto bad_reg;
3463 }
3464 }
3465
3466 BUG_ON(rule_idx != num_rules);
3467
3468 r = set_regdom(rd);
3469
3470 mutex_unlock(&cfg80211_mutex);
3471
3472 return r;
3473
3474 bad_reg:
3475 mutex_unlock(&cfg80211_mutex);
3476 kfree(rd);
3477 return r;
3478 }
3479
3480 static int validate_scan_freqs(struct nlattr *freqs)
3481 {
3482 struct nlattr *attr1, *attr2;
3483 int n_channels = 0, tmp1, tmp2;
3484
3485 nla_for_each_nested(attr1, freqs, tmp1) {
3486 n_channels++;
3487 /*
3488 * Some hardware has a limited channel list for
3489 * scanning, and it is pretty much nonsensical
3490 * to scan for a channel twice, so disallow that
3491 * and don't require drivers to check that the
3492 * channel list they get isn't longer than what
3493 * they can scan, as long as they can scan all
3494 * the channels they registered at once.
3495 */
3496 nla_for_each_nested(attr2, freqs, tmp2)
3497 if (attr1 != attr2 &&
3498 nla_get_u32(attr1) == nla_get_u32(attr2))
3499 return 0;
3500 }
3501
3502 return n_channels;
3503 }
3504
3505 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3506 {
3507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3508 struct net_device *dev = info->user_ptr[1];
3509 struct cfg80211_scan_request *request;
3510 struct nlattr *attr;
3511 struct wiphy *wiphy;
3512 int err, tmp, n_ssids = 0, n_channels, i;
3513 size_t ie_len;
3514
3515 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3516 return -EINVAL;
3517
3518 wiphy = &rdev->wiphy;
3519
3520 if (!rdev->ops->scan)
3521 return -EOPNOTSUPP;
3522
3523 if (rdev->scan_req)
3524 return -EBUSY;
3525
3526 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3527 n_channels = validate_scan_freqs(
3528 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3529 if (!n_channels)
3530 return -EINVAL;
3531 } else {
3532 enum ieee80211_band band;
3533 n_channels = 0;
3534
3535 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3536 if (wiphy->bands[band])
3537 n_channels += wiphy->bands[band]->n_channels;
3538 }
3539
3540 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3541 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3542 n_ssids++;
3543
3544 if (n_ssids > wiphy->max_scan_ssids)
3545 return -EINVAL;
3546
3547 if (info->attrs[NL80211_ATTR_IE])
3548 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3549 else
3550 ie_len = 0;
3551
3552 if (ie_len > wiphy->max_scan_ie_len)
3553 return -EINVAL;
3554
3555 request = kzalloc(sizeof(*request)
3556 + sizeof(*request->ssids) * n_ssids
3557 + sizeof(*request->channels) * n_channels
3558 + ie_len, GFP_KERNEL);
3559 if (!request)
3560 return -ENOMEM;
3561
3562 if (n_ssids)
3563 request->ssids = (void *)&request->channels[n_channels];
3564 request->n_ssids = n_ssids;
3565 if (ie_len) {
3566 if (request->ssids)
3567 request->ie = (void *)(request->ssids + n_ssids);
3568 else
3569 request->ie = (void *)(request->channels + n_channels);
3570 }
3571
3572 i = 0;
3573 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3574 /* user specified, bail out if channel not found */
3575 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3576 struct ieee80211_channel *chan;
3577
3578 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3579
3580 if (!chan) {
3581 err = -EINVAL;
3582 goto out_free;
3583 }
3584
3585 /* ignore disabled channels */
3586 if (chan->flags & IEEE80211_CHAN_DISABLED)
3587 continue;
3588
3589 request->channels[i] = chan;
3590 i++;
3591 }
3592 } else {
3593 enum ieee80211_band band;
3594
3595 /* all channels */
3596 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3597 int j;
3598 if (!wiphy->bands[band])
3599 continue;
3600 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3601 struct ieee80211_channel *chan;
3602
3603 chan = &wiphy->bands[band]->channels[j];
3604
3605 if (chan->flags & IEEE80211_CHAN_DISABLED)
3606 continue;
3607
3608 request->channels[i] = chan;
3609 i++;
3610 }
3611 }
3612 }
3613
3614 if (!i) {
3615 err = -EINVAL;
3616 goto out_free;
3617 }
3618
3619 request->n_channels = i;
3620
3621 i = 0;
3622 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3623 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3624 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3625 err = -EINVAL;
3626 goto out_free;
3627 }
3628 request->ssids[i].ssid_len = nla_len(attr);
3629 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3630 i++;
3631 }
3632 }
3633
3634 if (info->attrs[NL80211_ATTR_IE]) {
3635 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3636 memcpy((void *)request->ie,
3637 nla_data(info->attrs[NL80211_ATTR_IE]),
3638 request->ie_len);
3639 }
3640
3641 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3642 if (wiphy->bands[i])
3643 request->rates[i] =
3644 (1 << wiphy->bands[i]->n_bitrates) - 1;
3645
3646 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3647 nla_for_each_nested(attr,
3648 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3649 tmp) {
3650 enum ieee80211_band band = nla_type(attr);
3651
3652 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3653 err = -EINVAL;
3654 goto out_free;
3655 }
3656 err = ieee80211_get_ratemask(wiphy->bands[band],
3657 nla_data(attr),
3658 nla_len(attr),
3659 &request->rates[band]);
3660 if (err)
3661 goto out_free;
3662 }
3663 }
3664
3665 request->no_cck =
3666 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3667
3668 request->dev = dev;
3669 request->wiphy = &rdev->wiphy;
3670
3671 rdev->scan_req = request;
3672 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3673
3674 if (!err) {
3675 nl80211_send_scan_start(rdev, dev);
3676 dev_hold(dev);
3677 } else {
3678 out_free:
3679 rdev->scan_req = NULL;
3680 kfree(request);
3681 }
3682
3683 return err;
3684 }
3685
3686 static int nl80211_start_sched_scan(struct sk_buff *skb,
3687 struct genl_info *info)
3688 {
3689 struct cfg80211_sched_scan_request *request;
3690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3691 struct net_device *dev = info->user_ptr[1];
3692 struct nlattr *attr;
3693 struct wiphy *wiphy;
3694 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3695 u32 interval;
3696 enum ieee80211_band band;
3697 size_t ie_len;
3698 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3699
3700 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3701 !rdev->ops->sched_scan_start)
3702 return -EOPNOTSUPP;
3703
3704 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3705 return -EINVAL;
3706
3707 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3708 return -EINVAL;
3709
3710 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3711 if (interval == 0)
3712 return -EINVAL;
3713
3714 wiphy = &rdev->wiphy;
3715
3716 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3717 n_channels = validate_scan_freqs(
3718 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3719 if (!n_channels)
3720 return -EINVAL;
3721 } else {
3722 n_channels = 0;
3723
3724 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3725 if (wiphy->bands[band])
3726 n_channels += wiphy->bands[band]->n_channels;
3727 }
3728
3729 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3730 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3731 tmp)
3732 n_ssids++;
3733
3734 if (n_ssids > wiphy->max_sched_scan_ssids)
3735 return -EINVAL;
3736
3737 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3738 nla_for_each_nested(attr,
3739 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3740 tmp)
3741 n_match_sets++;
3742
3743 if (n_match_sets > wiphy->max_match_sets)
3744 return -EINVAL;
3745
3746 if (info->attrs[NL80211_ATTR_IE])
3747 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3748 else
3749 ie_len = 0;
3750
3751 if (ie_len > wiphy->max_sched_scan_ie_len)
3752 return -EINVAL;
3753
3754 mutex_lock(&rdev->sched_scan_mtx);
3755
3756 if (rdev->sched_scan_req) {
3757 err = -EINPROGRESS;
3758 goto out;
3759 }
3760
3761 request = kzalloc(sizeof(*request)
3762 + sizeof(*request->ssids) * n_ssids
3763 + sizeof(*request->match_sets) * n_match_sets
3764 + sizeof(*request->channels) * n_channels
3765 + ie_len, GFP_KERNEL);
3766 if (!request) {
3767 err = -ENOMEM;
3768 goto out;
3769 }
3770
3771 if (n_ssids)
3772 request->ssids = (void *)&request->channels[n_channels];
3773 request->n_ssids = n_ssids;
3774 if (ie_len) {
3775 if (request->ssids)
3776 request->ie = (void *)(request->ssids + n_ssids);
3777 else
3778 request->ie = (void *)(request->channels + n_channels);
3779 }
3780
3781 if (n_match_sets) {
3782 if (request->ie)
3783 request->match_sets = (void *)(request->ie + ie_len);
3784 else if (request->ssids)
3785 request->match_sets =
3786 (void *)(request->ssids + n_ssids);
3787 else
3788 request->match_sets =
3789 (void *)(request->channels + n_channels);
3790 }
3791 request->n_match_sets = n_match_sets;
3792
3793 i = 0;
3794 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3795 /* user specified, bail out if channel not found */
3796 nla_for_each_nested(attr,
3797 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3798 tmp) {
3799 struct ieee80211_channel *chan;
3800
3801 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3802
3803 if (!chan) {
3804 err = -EINVAL;
3805 goto out_free;
3806 }
3807
3808 /* ignore disabled channels */
3809 if (chan->flags & IEEE80211_CHAN_DISABLED)
3810 continue;
3811
3812 request->channels[i] = chan;
3813 i++;
3814 }
3815 } else {
3816 /* all channels */
3817 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3818 int j;
3819 if (!wiphy->bands[band])
3820 continue;
3821 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3822 struct ieee80211_channel *chan;
3823
3824 chan = &wiphy->bands[band]->channels[j];
3825
3826 if (chan->flags & IEEE80211_CHAN_DISABLED)
3827 continue;
3828
3829 request->channels[i] = chan;
3830 i++;
3831 }
3832 }
3833 }
3834
3835 if (!i) {
3836 err = -EINVAL;
3837 goto out_free;
3838 }
3839
3840 request->n_channels = i;
3841
3842 i = 0;
3843 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3844 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3845 tmp) {
3846 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3847 err = -EINVAL;
3848 goto out_free;
3849 }
3850 request->ssids[i].ssid_len = nla_len(attr);
3851 memcpy(request->ssids[i].ssid, nla_data(attr),
3852 nla_len(attr));
3853 i++;
3854 }
3855 }
3856
3857 i = 0;
3858 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3859 nla_for_each_nested(attr,
3860 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3861 tmp) {
3862 struct nlattr *ssid;
3863
3864 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3865 nla_data(attr), nla_len(attr),
3866 nl80211_match_policy);
3867 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3868 if (ssid) {
3869 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3870 err = -EINVAL;
3871 goto out_free;
3872 }
3873 memcpy(request->match_sets[i].ssid.ssid,
3874 nla_data(ssid), nla_len(ssid));
3875 request->match_sets[i].ssid.ssid_len =
3876 nla_len(ssid);
3877 }
3878 i++;
3879 }
3880 }
3881
3882 if (info->attrs[NL80211_ATTR_IE]) {
3883 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3884 memcpy((void *)request->ie,
3885 nla_data(info->attrs[NL80211_ATTR_IE]),
3886 request->ie_len);
3887 }
3888
3889 request->dev = dev;
3890 request->wiphy = &rdev->wiphy;
3891 request->interval = interval;
3892
3893 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3894 if (!err) {
3895 rdev->sched_scan_req = request;
3896 nl80211_send_sched_scan(rdev, dev,
3897 NL80211_CMD_START_SCHED_SCAN);
3898 goto out;
3899 }
3900
3901 out_free:
3902 kfree(request);
3903 out:
3904 mutex_unlock(&rdev->sched_scan_mtx);
3905 return err;
3906 }
3907
3908 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3909 struct genl_info *info)
3910 {
3911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3912 int err;
3913
3914 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3915 !rdev->ops->sched_scan_stop)
3916 return -EOPNOTSUPP;
3917
3918 mutex_lock(&rdev->sched_scan_mtx);
3919 err = __cfg80211_stop_sched_scan(rdev, false);
3920 mutex_unlock(&rdev->sched_scan_mtx);
3921
3922 return err;
3923 }
3924
3925 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3926 u32 seq, int flags,
3927 struct cfg80211_registered_device *rdev,
3928 struct wireless_dev *wdev,
3929 struct cfg80211_internal_bss *intbss)
3930 {
3931 struct cfg80211_bss *res = &intbss->pub;
3932 void *hdr;
3933 struct nlattr *bss;
3934 int i;
3935
3936 ASSERT_WDEV_LOCK(wdev);
3937
3938 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3939 NL80211_CMD_NEW_SCAN_RESULTS);
3940 if (!hdr)
3941 return -1;
3942
3943 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3944
3945 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3946 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3947
3948 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3949 if (!bss)
3950 goto nla_put_failure;
3951 if (!is_zero_ether_addr(res->bssid))
3952 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3953 if (res->information_elements && res->len_information_elements)
3954 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3955 res->len_information_elements,
3956 res->information_elements);
3957 if (res->beacon_ies && res->len_beacon_ies &&
3958 res->beacon_ies != res->information_elements)
3959 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3960 res->len_beacon_ies, res->beacon_ies);
3961 if (res->tsf)
3962 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3963 if (res->beacon_interval)
3964 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3965 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3966 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3967 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3968 jiffies_to_msecs(jiffies - intbss->ts));
3969
3970 switch (rdev->wiphy.signal_type) {
3971 case CFG80211_SIGNAL_TYPE_MBM:
3972 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3973 break;
3974 case CFG80211_SIGNAL_TYPE_UNSPEC:
3975 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3976 break;
3977 default:
3978 break;
3979 }
3980
3981 switch (wdev->iftype) {
3982 case NL80211_IFTYPE_P2P_CLIENT:
3983 case NL80211_IFTYPE_STATION:
3984 if (intbss == wdev->current_bss)
3985 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3986 NL80211_BSS_STATUS_ASSOCIATED);
3987 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3988 if (intbss != wdev->auth_bsses[i])
3989 continue;
3990 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3991 NL80211_BSS_STATUS_AUTHENTICATED);
3992 break;
3993 }
3994 break;
3995 case NL80211_IFTYPE_ADHOC:
3996 if (intbss == wdev->current_bss)
3997 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3998 NL80211_BSS_STATUS_IBSS_JOINED);
3999 break;
4000 default:
4001 break;
4002 }
4003
4004 nla_nest_end(msg, bss);
4005
4006 return genlmsg_end(msg, hdr);
4007
4008 nla_put_failure:
4009 genlmsg_cancel(msg, hdr);
4010 return -EMSGSIZE;
4011 }
4012
4013 static int nl80211_dump_scan(struct sk_buff *skb,
4014 struct netlink_callback *cb)
4015 {
4016 struct cfg80211_registered_device *rdev;
4017 struct net_device *dev;
4018 struct cfg80211_internal_bss *scan;
4019 struct wireless_dev *wdev;
4020 int start = cb->args[1], idx = 0;
4021 int err;
4022
4023 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4024 if (err)
4025 return err;
4026
4027 wdev = dev->ieee80211_ptr;
4028
4029 wdev_lock(wdev);
4030 spin_lock_bh(&rdev->bss_lock);
4031 cfg80211_bss_expire(rdev);
4032
4033 cb->seq = rdev->bss_generation;
4034
4035 list_for_each_entry(scan, &rdev->bss_list, list) {
4036 if (++idx <= start)
4037 continue;
4038 if (nl80211_send_bss(skb, cb,
4039 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4040 rdev, wdev, scan) < 0) {
4041 idx--;
4042 break;
4043 }
4044 }
4045
4046 spin_unlock_bh(&rdev->bss_lock);
4047 wdev_unlock(wdev);
4048
4049 cb->args[1] = idx;
4050 nl80211_finish_netdev_dump(rdev);
4051
4052 return skb->len;
4053 }
4054
4055 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4056 int flags, struct net_device *dev,
4057 struct survey_info *survey)
4058 {
4059 void *hdr;
4060 struct nlattr *infoattr;
4061
4062 hdr = nl80211hdr_put(msg, pid, seq, flags,
4063 NL80211_CMD_NEW_SURVEY_RESULTS);
4064 if (!hdr)
4065 return -ENOMEM;
4066
4067 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4068
4069 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4070 if (!infoattr)
4071 goto nla_put_failure;
4072
4073 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4074 survey->channel->center_freq);
4075 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4076 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4077 survey->noise);
4078 if (survey->filled & SURVEY_INFO_IN_USE)
4079 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4080 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4081 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4082 survey->channel_time);
4083 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4084 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4085 survey->channel_time_busy);
4086 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4087 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4088 survey->channel_time_ext_busy);
4089 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4090 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4091 survey->channel_time_rx);
4092 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4093 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4094 survey->channel_time_tx);
4095
4096 nla_nest_end(msg, infoattr);
4097
4098 return genlmsg_end(msg, hdr);
4099
4100 nla_put_failure:
4101 genlmsg_cancel(msg, hdr);
4102 return -EMSGSIZE;
4103 }
4104
4105 static int nl80211_dump_survey(struct sk_buff *skb,
4106 struct netlink_callback *cb)
4107 {
4108 struct survey_info survey;
4109 struct cfg80211_registered_device *dev;
4110 struct net_device *netdev;
4111 int survey_idx = cb->args[1];
4112 int res;
4113
4114 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4115 if (res)
4116 return res;
4117
4118 if (!dev->ops->dump_survey) {
4119 res = -EOPNOTSUPP;
4120 goto out_err;
4121 }
4122
4123 while (1) {
4124 struct ieee80211_channel *chan;
4125
4126 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4127 &survey);
4128 if (res == -ENOENT)
4129 break;
4130 if (res)
4131 goto out_err;
4132
4133 /* Survey without a channel doesn't make sense */
4134 if (!survey.channel) {
4135 res = -EINVAL;
4136 goto out;
4137 }
4138
4139 chan = ieee80211_get_channel(&dev->wiphy,
4140 survey.channel->center_freq);
4141 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4142 survey_idx++;
4143 continue;
4144 }
4145
4146 if (nl80211_send_survey(skb,
4147 NETLINK_CB(cb->skb).pid,
4148 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4149 netdev,
4150 &survey) < 0)
4151 goto out;
4152 survey_idx++;
4153 }
4154
4155 out:
4156 cb->args[1] = survey_idx;
4157 res = skb->len;
4158 out_err:
4159 nl80211_finish_netdev_dump(dev);
4160 return res;
4161 }
4162
4163 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4164 {
4165 return auth_type <= NL80211_AUTHTYPE_MAX;
4166 }
4167
4168 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4169 {
4170 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4171 NL80211_WPA_VERSION_2));
4172 }
4173
4174 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4175 {
4176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4177 struct net_device *dev = info->user_ptr[1];
4178 struct ieee80211_channel *chan;
4179 const u8 *bssid, *ssid, *ie = NULL;
4180 int err, ssid_len, ie_len = 0;
4181 enum nl80211_auth_type auth_type;
4182 struct key_parse key;
4183 bool local_state_change;
4184
4185 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4186 return -EINVAL;
4187
4188 if (!info->attrs[NL80211_ATTR_MAC])
4189 return -EINVAL;
4190
4191 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4192 return -EINVAL;
4193
4194 if (!info->attrs[NL80211_ATTR_SSID])
4195 return -EINVAL;
4196
4197 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4198 return -EINVAL;
4199
4200 err = nl80211_parse_key(info, &key);
4201 if (err)
4202 return err;
4203
4204 if (key.idx >= 0) {
4205 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4206 return -EINVAL;
4207 if (!key.p.key || !key.p.key_len)
4208 return -EINVAL;
4209 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4210 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4211 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4212 key.p.key_len != WLAN_KEY_LEN_WEP104))
4213 return -EINVAL;
4214 if (key.idx > 4)
4215 return -EINVAL;
4216 } else {
4217 key.p.key_len = 0;
4218 key.p.key = NULL;
4219 }
4220
4221 if (key.idx >= 0) {
4222 int i;
4223 bool ok = false;
4224 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4225 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4226 ok = true;
4227 break;
4228 }
4229 }
4230 if (!ok)
4231 return -EINVAL;
4232 }
4233
4234 if (!rdev->ops->auth)
4235 return -EOPNOTSUPP;
4236
4237 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4238 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4239 return -EOPNOTSUPP;
4240
4241 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4242 chan = ieee80211_get_channel(&rdev->wiphy,
4243 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4244 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4245 return -EINVAL;
4246
4247 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4248 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4249
4250 if (info->attrs[NL80211_ATTR_IE]) {
4251 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4252 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4253 }
4254
4255 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4256 if (!nl80211_valid_auth_type(auth_type))
4257 return -EINVAL;
4258
4259 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4260
4261 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4262 ssid, ssid_len, ie, ie_len,
4263 key.p.key, key.p.key_len, key.idx,
4264 local_state_change);
4265 }
4266
4267 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4268 struct genl_info *info,
4269 struct cfg80211_crypto_settings *settings,
4270 int cipher_limit)
4271 {
4272 memset(settings, 0, sizeof(*settings));
4273
4274 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4275
4276 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4277 u16 proto;
4278 proto = nla_get_u16(
4279 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4280 settings->control_port_ethertype = cpu_to_be16(proto);
4281 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4282 proto != ETH_P_PAE)
4283 return -EINVAL;
4284 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4285 settings->control_port_no_encrypt = true;
4286 } else
4287 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4288
4289 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4290 void *data;
4291 int len, i;
4292
4293 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4294 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4295 settings->n_ciphers_pairwise = len / sizeof(u32);
4296
4297 if (len % sizeof(u32))
4298 return -EINVAL;
4299
4300 if (settings->n_ciphers_pairwise > cipher_limit)
4301 return -EINVAL;
4302
4303 memcpy(settings->ciphers_pairwise, data, len);
4304
4305 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4306 if (!cfg80211_supported_cipher_suite(
4307 &rdev->wiphy,
4308 settings->ciphers_pairwise[i]))
4309 return -EINVAL;
4310 }
4311
4312 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4313 settings->cipher_group =
4314 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4315 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4316 settings->cipher_group))
4317 return -EINVAL;
4318 }
4319
4320 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4321 settings->wpa_versions =
4322 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4323 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4324 return -EINVAL;
4325 }
4326
4327 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4328 void *data;
4329 int len;
4330
4331 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4332 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4333 settings->n_akm_suites = len / sizeof(u32);
4334
4335 if (len % sizeof(u32))
4336 return -EINVAL;
4337
4338 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4339 return -EINVAL;
4340
4341 memcpy(settings->akm_suites, data, len);
4342 }
4343
4344 return 0;
4345 }
4346
4347 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4348 {
4349 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4350 struct net_device *dev = info->user_ptr[1];
4351 struct cfg80211_crypto_settings crypto;
4352 struct ieee80211_channel *chan;
4353 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4354 int err, ssid_len, ie_len = 0;
4355 bool use_mfp = false;
4356
4357 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4358 return -EINVAL;
4359
4360 if (!info->attrs[NL80211_ATTR_MAC] ||
4361 !info->attrs[NL80211_ATTR_SSID] ||
4362 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4363 return -EINVAL;
4364
4365 if (!rdev->ops->assoc)
4366 return -EOPNOTSUPP;
4367
4368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4369 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4370 return -EOPNOTSUPP;
4371
4372 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4373
4374 chan = ieee80211_get_channel(&rdev->wiphy,
4375 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4376 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4377 return -EINVAL;
4378
4379 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4380 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4381
4382 if (info->attrs[NL80211_ATTR_IE]) {
4383 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4384 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4385 }
4386
4387 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4388 enum nl80211_mfp mfp =
4389 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4390 if (mfp == NL80211_MFP_REQUIRED)
4391 use_mfp = true;
4392 else if (mfp != NL80211_MFP_NO)
4393 return -EINVAL;
4394 }
4395
4396 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4397 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4398
4399 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4400 if (!err)
4401 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4402 ssid, ssid_len, ie, ie_len, use_mfp,
4403 &crypto);
4404
4405 return err;
4406 }
4407
4408 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4409 {
4410 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4411 struct net_device *dev = info->user_ptr[1];
4412 const u8 *ie = NULL, *bssid;
4413 int ie_len = 0;
4414 u16 reason_code;
4415 bool local_state_change;
4416
4417 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4418 return -EINVAL;
4419
4420 if (!info->attrs[NL80211_ATTR_MAC])
4421 return -EINVAL;
4422
4423 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4424 return -EINVAL;
4425
4426 if (!rdev->ops->deauth)
4427 return -EOPNOTSUPP;
4428
4429 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4430 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4431 return -EOPNOTSUPP;
4432
4433 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4434
4435 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4436 if (reason_code == 0) {
4437 /* Reason Code 0 is reserved */
4438 return -EINVAL;
4439 }
4440
4441 if (info->attrs[NL80211_ATTR_IE]) {
4442 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4443 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4444 }
4445
4446 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4447
4448 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4449 local_state_change);
4450 }
4451
4452 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4453 {
4454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4455 struct net_device *dev = info->user_ptr[1];
4456 const u8 *ie = NULL, *bssid;
4457 int ie_len = 0;
4458 u16 reason_code;
4459 bool local_state_change;
4460
4461 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4462 return -EINVAL;
4463
4464 if (!info->attrs[NL80211_ATTR_MAC])
4465 return -EINVAL;
4466
4467 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4468 return -EINVAL;
4469
4470 if (!rdev->ops->disassoc)
4471 return -EOPNOTSUPP;
4472
4473 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4474 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4475 return -EOPNOTSUPP;
4476
4477 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4478
4479 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4480 if (reason_code == 0) {
4481 /* Reason Code 0 is reserved */
4482 return -EINVAL;
4483 }
4484
4485 if (info->attrs[NL80211_ATTR_IE]) {
4486 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4487 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4488 }
4489
4490 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4491
4492 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4493 local_state_change);
4494 }
4495
4496 static bool
4497 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4498 int mcast_rate[IEEE80211_NUM_BANDS],
4499 int rateval)
4500 {
4501 struct wiphy *wiphy = &rdev->wiphy;
4502 bool found = false;
4503 int band, i;
4504
4505 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4506 struct ieee80211_supported_band *sband;
4507
4508 sband = wiphy->bands[band];
4509 if (!sband)
4510 continue;
4511
4512 for (i = 0; i < sband->n_bitrates; i++) {
4513 if (sband->bitrates[i].bitrate == rateval) {
4514 mcast_rate[band] = i + 1;
4515 found = true;
4516 break;
4517 }
4518 }
4519 }
4520
4521 return found;
4522 }
4523
4524 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4525 {
4526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4527 struct net_device *dev = info->user_ptr[1];
4528 struct cfg80211_ibss_params ibss;
4529 struct wiphy *wiphy;
4530 struct cfg80211_cached_keys *connkeys = NULL;
4531 int err;
4532
4533 memset(&ibss, 0, sizeof(ibss));
4534
4535 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4536 return -EINVAL;
4537
4538 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4539 !info->attrs[NL80211_ATTR_SSID] ||
4540 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4541 return -EINVAL;
4542
4543 ibss.beacon_interval = 100;
4544
4545 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4546 ibss.beacon_interval =
4547 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4548 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4549 return -EINVAL;
4550 }
4551
4552 if (!rdev->ops->join_ibss)
4553 return -EOPNOTSUPP;
4554
4555 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4556 return -EOPNOTSUPP;
4557
4558 wiphy = &rdev->wiphy;
4559
4560 if (info->attrs[NL80211_ATTR_MAC]) {
4561 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4562
4563 if (!is_valid_ether_addr(ibss.bssid))
4564 return -EINVAL;
4565 }
4566 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4567 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4568
4569 if (info->attrs[NL80211_ATTR_IE]) {
4570 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4571 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4572 }
4573
4574 ibss.channel = ieee80211_get_channel(wiphy,
4575 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4576 if (!ibss.channel ||
4577 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4578 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4579 return -EINVAL;
4580
4581 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4582 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4583
4584 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4585 u8 *rates =
4586 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4587 int n_rates =
4588 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4589 struct ieee80211_supported_band *sband =
4590 wiphy->bands[ibss.channel->band];
4591 int err;
4592
4593 err = ieee80211_get_ratemask(sband, rates, n_rates,
4594 &ibss.basic_rates);
4595 if (err)
4596 return err;
4597 }
4598
4599 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4600 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4601 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4602 return -EINVAL;
4603
4604 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4605 connkeys = nl80211_parse_connkeys(rdev,
4606 info->attrs[NL80211_ATTR_KEYS]);
4607 if (IS_ERR(connkeys))
4608 return PTR_ERR(connkeys);
4609 }
4610
4611 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4612 if (err)
4613 kfree(connkeys);
4614 return err;
4615 }
4616
4617 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4618 {
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct net_device *dev = info->user_ptr[1];
4621
4622 if (!rdev->ops->leave_ibss)
4623 return -EOPNOTSUPP;
4624
4625 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4626 return -EOPNOTSUPP;
4627
4628 return cfg80211_leave_ibss(rdev, dev, false);
4629 }
4630
4631 #ifdef CONFIG_NL80211_TESTMODE
4632 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4633 .name = "testmode",
4634 };
4635
4636 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4637 {
4638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4639 int err;
4640
4641 if (!info->attrs[NL80211_ATTR_TESTDATA])
4642 return -EINVAL;
4643
4644 err = -EOPNOTSUPP;
4645 if (rdev->ops->testmode_cmd) {
4646 rdev->testmode_info = info;
4647 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4648 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4649 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4650 rdev->testmode_info = NULL;
4651 }
4652
4653 return err;
4654 }
4655
4656 static int nl80211_testmode_dump(struct sk_buff *skb,
4657 struct netlink_callback *cb)
4658 {
4659 struct cfg80211_registered_device *dev;
4660 int err;
4661 long phy_idx;
4662 void *data = NULL;
4663 int data_len = 0;
4664
4665 if (cb->args[0]) {
4666 /*
4667 * 0 is a valid index, but not valid for args[0],
4668 * so we need to offset by 1.
4669 */
4670 phy_idx = cb->args[0] - 1;
4671 } else {
4672 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4673 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4674 nl80211_policy);
4675 if (err)
4676 return err;
4677 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4678 return -EINVAL;
4679 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4680 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4681 cb->args[1] =
4682 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4683 }
4684
4685 if (cb->args[1]) {
4686 data = nla_data((void *)cb->args[1]);
4687 data_len = nla_len((void *)cb->args[1]);
4688 }
4689
4690 mutex_lock(&cfg80211_mutex);
4691 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4692 if (!dev) {
4693 mutex_unlock(&cfg80211_mutex);
4694 return -ENOENT;
4695 }
4696 cfg80211_lock_rdev(dev);
4697 mutex_unlock(&cfg80211_mutex);
4698
4699 if (!dev->ops->testmode_dump) {
4700 err = -EOPNOTSUPP;
4701 goto out_err;
4702 }
4703
4704 while (1) {
4705 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4706 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4707 NL80211_CMD_TESTMODE);
4708 struct nlattr *tmdata;
4709
4710 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4711 genlmsg_cancel(skb, hdr);
4712 break;
4713 }
4714
4715 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4716 if (!tmdata) {
4717 genlmsg_cancel(skb, hdr);
4718 break;
4719 }
4720 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4721 data, data_len);
4722 nla_nest_end(skb, tmdata);
4723
4724 if (err == -ENOBUFS || err == -ENOENT) {
4725 genlmsg_cancel(skb, hdr);
4726 break;
4727 } else if (err) {
4728 genlmsg_cancel(skb, hdr);
4729 goto out_err;
4730 }
4731
4732 genlmsg_end(skb, hdr);
4733 }
4734
4735 err = skb->len;
4736 /* see above */
4737 cb->args[0] = phy_idx + 1;
4738 out_err:
4739 cfg80211_unlock_rdev(dev);
4740 return err;
4741 }
4742
4743 static struct sk_buff *
4744 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4745 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4746 {
4747 struct sk_buff *skb;
4748 void *hdr;
4749 struct nlattr *data;
4750
4751 skb = nlmsg_new(approxlen + 100, gfp);
4752 if (!skb)
4753 return NULL;
4754
4755 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4756 if (!hdr) {
4757 kfree_skb(skb);
4758 return NULL;
4759 }
4760
4761 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4762 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4763
4764 ((void **)skb->cb)[0] = rdev;
4765 ((void **)skb->cb)[1] = hdr;
4766 ((void **)skb->cb)[2] = data;
4767
4768 return skb;
4769
4770 nla_put_failure:
4771 kfree_skb(skb);
4772 return NULL;
4773 }
4774
4775 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4776 int approxlen)
4777 {
4778 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4779
4780 if (WARN_ON(!rdev->testmode_info))
4781 return NULL;
4782
4783 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4784 rdev->testmode_info->snd_pid,
4785 rdev->testmode_info->snd_seq,
4786 GFP_KERNEL);
4787 }
4788 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4789
4790 int cfg80211_testmode_reply(struct sk_buff *skb)
4791 {
4792 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4793 void *hdr = ((void **)skb->cb)[1];
4794 struct nlattr *data = ((void **)skb->cb)[2];
4795
4796 if (WARN_ON(!rdev->testmode_info)) {
4797 kfree_skb(skb);
4798 return -EINVAL;
4799 }
4800
4801 nla_nest_end(skb, data);
4802 genlmsg_end(skb, hdr);
4803 return genlmsg_reply(skb, rdev->testmode_info);
4804 }
4805 EXPORT_SYMBOL(cfg80211_testmode_reply);
4806
4807 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4808 int approxlen, gfp_t gfp)
4809 {
4810 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4811
4812 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4813 }
4814 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4815
4816 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4817 {
4818 void *hdr = ((void **)skb->cb)[1];
4819 struct nlattr *data = ((void **)skb->cb)[2];
4820
4821 nla_nest_end(skb, data);
4822 genlmsg_end(skb, hdr);
4823 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4824 }
4825 EXPORT_SYMBOL(cfg80211_testmode_event);
4826 #endif
4827
4828 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4829 {
4830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4831 struct net_device *dev = info->user_ptr[1];
4832 struct cfg80211_connect_params connect;
4833 struct wiphy *wiphy;
4834 struct cfg80211_cached_keys *connkeys = NULL;
4835 int err;
4836
4837 memset(&connect, 0, sizeof(connect));
4838
4839 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4840 return -EINVAL;
4841
4842 if (!info->attrs[NL80211_ATTR_SSID] ||
4843 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4844 return -EINVAL;
4845
4846 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4847 connect.auth_type =
4848 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4849 if (!nl80211_valid_auth_type(connect.auth_type))
4850 return -EINVAL;
4851 } else
4852 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4853
4854 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4855
4856 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4857 NL80211_MAX_NR_CIPHER_SUITES);
4858 if (err)
4859 return err;
4860
4861 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4862 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4863 return -EOPNOTSUPP;
4864
4865 wiphy = &rdev->wiphy;
4866
4867 if (info->attrs[NL80211_ATTR_MAC])
4868 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4869 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4870 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4871
4872 if (info->attrs[NL80211_ATTR_IE]) {
4873 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4874 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4875 }
4876
4877 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4878 connect.channel =
4879 ieee80211_get_channel(wiphy,
4880 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4881 if (!connect.channel ||
4882 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4883 return -EINVAL;
4884 }
4885
4886 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4887 connkeys = nl80211_parse_connkeys(rdev,
4888 info->attrs[NL80211_ATTR_KEYS]);
4889 if (IS_ERR(connkeys))
4890 return PTR_ERR(connkeys);
4891 }
4892
4893 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4894 if (err)
4895 kfree(connkeys);
4896 return err;
4897 }
4898
4899 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4900 {
4901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4902 struct net_device *dev = info->user_ptr[1];
4903 u16 reason;
4904
4905 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4906 reason = WLAN_REASON_DEAUTH_LEAVING;
4907 else
4908 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4909
4910 if (reason == 0)
4911 return -EINVAL;
4912
4913 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4914 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4915 return -EOPNOTSUPP;
4916
4917 return cfg80211_disconnect(rdev, dev, reason, true);
4918 }
4919
4920 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4921 {
4922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4923 struct net *net;
4924 int err;
4925 u32 pid;
4926
4927 if (!info->attrs[NL80211_ATTR_PID])
4928 return -EINVAL;
4929
4930 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4931
4932 net = get_net_ns_by_pid(pid);
4933 if (IS_ERR(net))
4934 return PTR_ERR(net);
4935
4936 err = 0;
4937
4938 /* check if anything to do */
4939 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4940 err = cfg80211_switch_netns(rdev, net);
4941
4942 put_net(net);
4943 return err;
4944 }
4945
4946 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4947 {
4948 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4949 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4950 struct cfg80211_pmksa *pmksa) = NULL;
4951 struct net_device *dev = info->user_ptr[1];
4952 struct cfg80211_pmksa pmksa;
4953
4954 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4955
4956 if (!info->attrs[NL80211_ATTR_MAC])
4957 return -EINVAL;
4958
4959 if (!info->attrs[NL80211_ATTR_PMKID])
4960 return -EINVAL;
4961
4962 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4963 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4964
4965 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4966 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4967 return -EOPNOTSUPP;
4968
4969 switch (info->genlhdr->cmd) {
4970 case NL80211_CMD_SET_PMKSA:
4971 rdev_ops = rdev->ops->set_pmksa;
4972 break;
4973 case NL80211_CMD_DEL_PMKSA:
4974 rdev_ops = rdev->ops->del_pmksa;
4975 break;
4976 default:
4977 WARN_ON(1);
4978 break;
4979 }
4980
4981 if (!rdev_ops)
4982 return -EOPNOTSUPP;
4983
4984 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4985 }
4986
4987 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4988 {
4989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4990 struct net_device *dev = info->user_ptr[1];
4991
4992 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4993 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4994 return -EOPNOTSUPP;
4995
4996 if (!rdev->ops->flush_pmksa)
4997 return -EOPNOTSUPP;
4998
4999 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5000 }
5001
5002 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5003 {
5004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5005 struct net_device *dev = info->user_ptr[1];
5006 u8 action_code, dialog_token;
5007 u16 status_code;
5008 u8 *peer;
5009
5010 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5011 !rdev->ops->tdls_mgmt)
5012 return -EOPNOTSUPP;
5013
5014 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5015 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5016 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5017 !info->attrs[NL80211_ATTR_IE] ||
5018 !info->attrs[NL80211_ATTR_MAC])
5019 return -EINVAL;
5020
5021 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5022 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5023 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5024 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5025
5026 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5027 dialog_token, status_code,
5028 nla_data(info->attrs[NL80211_ATTR_IE]),
5029 nla_len(info->attrs[NL80211_ATTR_IE]));
5030 }
5031
5032 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5033 {
5034 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5035 struct net_device *dev = info->user_ptr[1];
5036 enum nl80211_tdls_operation operation;
5037 u8 *peer;
5038
5039 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5040 !rdev->ops->tdls_oper)
5041 return -EOPNOTSUPP;
5042
5043 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5044 !info->attrs[NL80211_ATTR_MAC])
5045 return -EINVAL;
5046
5047 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5048 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5049
5050 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5051 }
5052
5053 static int nl80211_remain_on_channel(struct sk_buff *skb,
5054 struct genl_info *info)
5055 {
5056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5057 struct net_device *dev = info->user_ptr[1];
5058 struct ieee80211_channel *chan;
5059 struct sk_buff *msg;
5060 void *hdr;
5061 u64 cookie;
5062 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5063 u32 freq, duration;
5064 int err;
5065
5066 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5067 !info->attrs[NL80211_ATTR_DURATION])
5068 return -EINVAL;
5069
5070 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5071
5072 /*
5073 * We should be on that channel for at least one jiffie,
5074 * and more than 5 seconds seems excessive.
5075 */
5076 if (!duration || !msecs_to_jiffies(duration) ||
5077 duration > rdev->wiphy.max_remain_on_channel_duration)
5078 return -EINVAL;
5079
5080 if (!rdev->ops->remain_on_channel)
5081 return -EOPNOTSUPP;
5082
5083 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5084 channel_type = nla_get_u32(
5085 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5086 if (channel_type != NL80211_CHAN_NO_HT &&
5087 channel_type != NL80211_CHAN_HT20 &&
5088 channel_type != NL80211_CHAN_HT40PLUS &&
5089 channel_type != NL80211_CHAN_HT40MINUS)
5090 return -EINVAL;
5091 }
5092
5093 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5094 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5095 if (chan == NULL)
5096 return -EINVAL;
5097
5098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5099 if (!msg)
5100 return -ENOMEM;
5101
5102 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5103 NL80211_CMD_REMAIN_ON_CHANNEL);
5104
5105 if (IS_ERR(hdr)) {
5106 err = PTR_ERR(hdr);
5107 goto free_msg;
5108 }
5109
5110 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5111 channel_type, duration, &cookie);
5112
5113 if (err)
5114 goto free_msg;
5115
5116 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5117
5118 genlmsg_end(msg, hdr);
5119
5120 return genlmsg_reply(msg, info);
5121
5122 nla_put_failure:
5123 err = -ENOBUFS;
5124 free_msg:
5125 nlmsg_free(msg);
5126 return err;
5127 }
5128
5129 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5130 struct genl_info *info)
5131 {
5132 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5133 struct net_device *dev = info->user_ptr[1];
5134 u64 cookie;
5135
5136 if (!info->attrs[NL80211_ATTR_COOKIE])
5137 return -EINVAL;
5138
5139 if (!rdev->ops->cancel_remain_on_channel)
5140 return -EOPNOTSUPP;
5141
5142 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5143
5144 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5145 }
5146
5147 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5148 u8 *rates, u8 rates_len)
5149 {
5150 u8 i;
5151 u32 mask = 0;
5152
5153 for (i = 0; i < rates_len; i++) {
5154 int rate = (rates[i] & 0x7f) * 5;
5155 int ridx;
5156 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5157 struct ieee80211_rate *srate =
5158 &sband->bitrates[ridx];
5159 if (rate == srate->bitrate) {
5160 mask |= 1 << ridx;
5161 break;
5162 }
5163 }
5164 if (ridx == sband->n_bitrates)
5165 return 0; /* rate not found */
5166 }
5167
5168 return mask;
5169 }
5170
5171 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5172 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5173 .len = NL80211_MAX_SUPP_RATES },
5174 };
5175
5176 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5177 struct genl_info *info)
5178 {
5179 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5181 struct cfg80211_bitrate_mask mask;
5182 int rem, i;
5183 struct net_device *dev = info->user_ptr[1];
5184 struct nlattr *tx_rates;
5185 struct ieee80211_supported_band *sband;
5186
5187 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5188 return -EINVAL;
5189
5190 if (!rdev->ops->set_bitrate_mask)
5191 return -EOPNOTSUPP;
5192
5193 memset(&mask, 0, sizeof(mask));
5194 /* Default to all rates enabled */
5195 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5196 sband = rdev->wiphy.bands[i];
5197 mask.control[i].legacy =
5198 sband ? (1 << sband->n_bitrates) - 1 : 0;
5199 }
5200
5201 /*
5202 * The nested attribute uses enum nl80211_band as the index. This maps
5203 * directly to the enum ieee80211_band values used in cfg80211.
5204 */
5205 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5206 {
5207 enum ieee80211_band band = nla_type(tx_rates);
5208 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5209 return -EINVAL;
5210 sband = rdev->wiphy.bands[band];
5211 if (sband == NULL)
5212 return -EINVAL;
5213 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5214 nla_len(tx_rates), nl80211_txattr_policy);
5215 if (tb[NL80211_TXRATE_LEGACY]) {
5216 mask.control[band].legacy = rateset_to_mask(
5217 sband,
5218 nla_data(tb[NL80211_TXRATE_LEGACY]),
5219 nla_len(tb[NL80211_TXRATE_LEGACY]));
5220 if (mask.control[band].legacy == 0)
5221 return -EINVAL;
5222 }
5223 }
5224
5225 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5226 }
5227
5228 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5229 {
5230 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5231 struct net_device *dev = info->user_ptr[1];
5232 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5233
5234 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5235 return -EINVAL;
5236
5237 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5238 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5239
5240 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5241 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5242 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5243 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5244 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5245 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5246 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5247 return -EOPNOTSUPP;
5248
5249 /* not much point in registering if we can't reply */
5250 if (!rdev->ops->mgmt_tx)
5251 return -EOPNOTSUPP;
5252
5253 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5254 frame_type,
5255 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5256 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5257 }
5258
5259 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5260 {
5261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5262 struct net_device *dev = info->user_ptr[1];
5263 struct ieee80211_channel *chan;
5264 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5265 bool channel_type_valid = false;
5266 u32 freq;
5267 int err;
5268 void *hdr;
5269 u64 cookie;
5270 struct sk_buff *msg;
5271 unsigned int wait = 0;
5272 bool offchan;
5273 bool no_cck;
5274
5275 if (!info->attrs[NL80211_ATTR_FRAME] ||
5276 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5277 return -EINVAL;
5278
5279 if (!rdev->ops->mgmt_tx)
5280 return -EOPNOTSUPP;
5281
5282 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5283 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5284 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5285 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5289 return -EOPNOTSUPP;
5290
5291 if (info->attrs[NL80211_ATTR_DURATION]) {
5292 if (!rdev->ops->mgmt_tx_cancel_wait)
5293 return -EINVAL;
5294 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5295 }
5296
5297 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5298 channel_type = nla_get_u32(
5299 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5300 if (channel_type != NL80211_CHAN_NO_HT &&
5301 channel_type != NL80211_CHAN_HT20 &&
5302 channel_type != NL80211_CHAN_HT40PLUS &&
5303 channel_type != NL80211_CHAN_HT40MINUS)
5304 return -EINVAL;
5305 channel_type_valid = true;
5306 }
5307
5308 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5309
5310 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5311
5312 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5313 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5314 if (chan == NULL)
5315 return -EINVAL;
5316
5317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5318 if (!msg)
5319 return -ENOMEM;
5320
5321 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5322 NL80211_CMD_FRAME);
5323
5324 if (IS_ERR(hdr)) {
5325 err = PTR_ERR(hdr);
5326 goto free_msg;
5327 }
5328 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5329 channel_type_valid, wait,
5330 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5331 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5332 no_cck, &cookie);
5333 if (err)
5334 goto free_msg;
5335
5336 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5337
5338 genlmsg_end(msg, hdr);
5339 return genlmsg_reply(msg, info);
5340
5341 nla_put_failure:
5342 err = -ENOBUFS;
5343 free_msg:
5344 nlmsg_free(msg);
5345 return err;
5346 }
5347
5348 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5349 {
5350 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5351 struct net_device *dev = info->user_ptr[1];
5352 u64 cookie;
5353
5354 if (!info->attrs[NL80211_ATTR_COOKIE])
5355 return -EINVAL;
5356
5357 if (!rdev->ops->mgmt_tx_cancel_wait)
5358 return -EOPNOTSUPP;
5359
5360 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5361 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5363 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5364 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5365 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5366 return -EOPNOTSUPP;
5367
5368 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5369
5370 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5371 }
5372
5373 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5374 {
5375 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5376 struct wireless_dev *wdev;
5377 struct net_device *dev = info->user_ptr[1];
5378 u8 ps_state;
5379 bool state;
5380 int err;
5381
5382 if (!info->attrs[NL80211_ATTR_PS_STATE])
5383 return -EINVAL;
5384
5385 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5386
5387 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5388 return -EINVAL;
5389
5390 wdev = dev->ieee80211_ptr;
5391
5392 if (!rdev->ops->set_power_mgmt)
5393 return -EOPNOTSUPP;
5394
5395 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5396
5397 if (state == wdev->ps)
5398 return 0;
5399
5400 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5401 wdev->ps_timeout);
5402 if (!err)
5403 wdev->ps = state;
5404 return err;
5405 }
5406
5407 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5408 {
5409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5410 enum nl80211_ps_state ps_state;
5411 struct wireless_dev *wdev;
5412 struct net_device *dev = info->user_ptr[1];
5413 struct sk_buff *msg;
5414 void *hdr;
5415 int err;
5416
5417 wdev = dev->ieee80211_ptr;
5418
5419 if (!rdev->ops->set_power_mgmt)
5420 return -EOPNOTSUPP;
5421
5422 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5423 if (!msg)
5424 return -ENOMEM;
5425
5426 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5427 NL80211_CMD_GET_POWER_SAVE);
5428 if (!hdr) {
5429 err = -ENOBUFS;
5430 goto free_msg;
5431 }
5432
5433 if (wdev->ps)
5434 ps_state = NL80211_PS_ENABLED;
5435 else
5436 ps_state = NL80211_PS_DISABLED;
5437
5438 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5439
5440 genlmsg_end(msg, hdr);
5441 return genlmsg_reply(msg, info);
5442
5443 nla_put_failure:
5444 err = -ENOBUFS;
5445 free_msg:
5446 nlmsg_free(msg);
5447 return err;
5448 }
5449
5450 static struct nla_policy
5451 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5452 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5453 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5454 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5455 };
5456
5457 static int nl80211_set_cqm_rssi(struct genl_info *info,
5458 s32 threshold, u32 hysteresis)
5459 {
5460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5461 struct wireless_dev *wdev;
5462 struct net_device *dev = info->user_ptr[1];
5463
5464 if (threshold > 0)
5465 return -EINVAL;
5466
5467 wdev = dev->ieee80211_ptr;
5468
5469 if (!rdev->ops->set_cqm_rssi_config)
5470 return -EOPNOTSUPP;
5471
5472 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5473 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5474 return -EOPNOTSUPP;
5475
5476 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5477 threshold, hysteresis);
5478 }
5479
5480 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5481 {
5482 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5483 struct nlattr *cqm;
5484 int err;
5485
5486 cqm = info->attrs[NL80211_ATTR_CQM];
5487 if (!cqm) {
5488 err = -EINVAL;
5489 goto out;
5490 }
5491
5492 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5493 nl80211_attr_cqm_policy);
5494 if (err)
5495 goto out;
5496
5497 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5498 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5499 s32 threshold;
5500 u32 hysteresis;
5501 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5502 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5503 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5504 } else
5505 err = -EINVAL;
5506
5507 out:
5508 return err;
5509 }
5510
5511 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5512 {
5513 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5514 struct net_device *dev = info->user_ptr[1];
5515 struct mesh_config cfg;
5516 struct mesh_setup setup;
5517 int err;
5518
5519 /* start with default */
5520 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5521 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5522
5523 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5524 /* and parse parameters if given */
5525 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5526 if (err)
5527 return err;
5528 }
5529
5530 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5531 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5532 return -EINVAL;
5533
5534 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5535 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5536
5537 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5538 /* parse additional setup parameters if given */
5539 err = nl80211_parse_mesh_setup(info, &setup);
5540 if (err)
5541 return err;
5542 }
5543
5544 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5545 }
5546
5547 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5548 {
5549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5550 struct net_device *dev = info->user_ptr[1];
5551
5552 return cfg80211_leave_mesh(rdev, dev);
5553 }
5554
5555 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5556 {
5557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5558 struct sk_buff *msg;
5559 void *hdr;
5560
5561 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5562 return -EOPNOTSUPP;
5563
5564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5565 if (!msg)
5566 return -ENOMEM;
5567
5568 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5569 NL80211_CMD_GET_WOWLAN);
5570 if (!hdr)
5571 goto nla_put_failure;
5572
5573 if (rdev->wowlan) {
5574 struct nlattr *nl_wowlan;
5575
5576 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5577 if (!nl_wowlan)
5578 goto nla_put_failure;
5579
5580 if (rdev->wowlan->any)
5581 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5582 if (rdev->wowlan->disconnect)
5583 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5584 if (rdev->wowlan->magic_pkt)
5585 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5586 if (rdev->wowlan->gtk_rekey_failure)
5587 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5588 if (rdev->wowlan->eap_identity_req)
5589 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5590 if (rdev->wowlan->four_way_handshake)
5591 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5592 if (rdev->wowlan->rfkill_release)
5593 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5594 if (rdev->wowlan->n_patterns) {
5595 struct nlattr *nl_pats, *nl_pat;
5596 int i, pat_len;
5597
5598 nl_pats = nla_nest_start(msg,
5599 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5600 if (!nl_pats)
5601 goto nla_put_failure;
5602
5603 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5604 nl_pat = nla_nest_start(msg, i + 1);
5605 if (!nl_pat)
5606 goto nla_put_failure;
5607 pat_len = rdev->wowlan->patterns[i].pattern_len;
5608 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5609 DIV_ROUND_UP(pat_len, 8),
5610 rdev->wowlan->patterns[i].mask);
5611 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5612 pat_len,
5613 rdev->wowlan->patterns[i].pattern);
5614 nla_nest_end(msg, nl_pat);
5615 }
5616 nla_nest_end(msg, nl_pats);
5617 }
5618
5619 nla_nest_end(msg, nl_wowlan);
5620 }
5621
5622 genlmsg_end(msg, hdr);
5623 return genlmsg_reply(msg, info);
5624
5625 nla_put_failure:
5626 nlmsg_free(msg);
5627 return -ENOBUFS;
5628 }
5629
5630 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5631 {
5632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5633 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5634 struct cfg80211_wowlan no_triggers = {};
5635 struct cfg80211_wowlan new_triggers = {};
5636 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5637 int err, i;
5638
5639 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5640 return -EOPNOTSUPP;
5641
5642 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5643 goto no_triggers;
5644
5645 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5646 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5647 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5648 nl80211_wowlan_policy);
5649 if (err)
5650 return err;
5651
5652 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5653 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5654 return -EINVAL;
5655 new_triggers.any = true;
5656 }
5657
5658 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5659 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5660 return -EINVAL;
5661 new_triggers.disconnect = true;
5662 }
5663
5664 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5665 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5666 return -EINVAL;
5667 new_triggers.magic_pkt = true;
5668 }
5669
5670 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5671 return -EINVAL;
5672
5673 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5674 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5675 return -EINVAL;
5676 new_triggers.gtk_rekey_failure = true;
5677 }
5678
5679 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5680 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5681 return -EINVAL;
5682 new_triggers.eap_identity_req = true;
5683 }
5684
5685 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5686 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5687 return -EINVAL;
5688 new_triggers.four_way_handshake = true;
5689 }
5690
5691 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5692 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5693 return -EINVAL;
5694 new_triggers.rfkill_release = true;
5695 }
5696
5697 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5698 struct nlattr *pat;
5699 int n_patterns = 0;
5700 int rem, pat_len, mask_len;
5701 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5702
5703 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5704 rem)
5705 n_patterns++;
5706 if (n_patterns > wowlan->n_patterns)
5707 return -EINVAL;
5708
5709 new_triggers.patterns = kcalloc(n_patterns,
5710 sizeof(new_triggers.patterns[0]),
5711 GFP_KERNEL);
5712 if (!new_triggers.patterns)
5713 return -ENOMEM;
5714
5715 new_triggers.n_patterns = n_patterns;
5716 i = 0;
5717
5718 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5719 rem) {
5720 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5721 nla_data(pat), nla_len(pat), NULL);
5722 err = -EINVAL;
5723 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5724 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5725 goto error;
5726 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5727 mask_len = DIV_ROUND_UP(pat_len, 8);
5728 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5729 mask_len)
5730 goto error;
5731 if (pat_len > wowlan->pattern_max_len ||
5732 pat_len < wowlan->pattern_min_len)
5733 goto error;
5734
5735 new_triggers.patterns[i].mask =
5736 kmalloc(mask_len + pat_len, GFP_KERNEL);
5737 if (!new_triggers.patterns[i].mask) {
5738 err = -ENOMEM;
5739 goto error;
5740 }
5741 new_triggers.patterns[i].pattern =
5742 new_triggers.patterns[i].mask + mask_len;
5743 memcpy(new_triggers.patterns[i].mask,
5744 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5745 mask_len);
5746 new_triggers.patterns[i].pattern_len = pat_len;
5747 memcpy(new_triggers.patterns[i].pattern,
5748 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5749 pat_len);
5750 i++;
5751 }
5752 }
5753
5754 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5755 struct cfg80211_wowlan *ntrig;
5756 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5757 GFP_KERNEL);
5758 if (!ntrig) {
5759 err = -ENOMEM;
5760 goto error;
5761 }
5762 cfg80211_rdev_free_wowlan(rdev);
5763 rdev->wowlan = ntrig;
5764 } else {
5765 no_triggers:
5766 cfg80211_rdev_free_wowlan(rdev);
5767 rdev->wowlan = NULL;
5768 }
5769
5770 return 0;
5771 error:
5772 for (i = 0; i < new_triggers.n_patterns; i++)
5773 kfree(new_triggers.patterns[i].mask);
5774 kfree(new_triggers.patterns);
5775 return err;
5776 }
5777
5778 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5779 {
5780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5781 struct net_device *dev = info->user_ptr[1];
5782 struct wireless_dev *wdev = dev->ieee80211_ptr;
5783 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5784 struct cfg80211_gtk_rekey_data rekey_data;
5785 int err;
5786
5787 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5788 return -EINVAL;
5789
5790 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5791 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5792 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5793 nl80211_rekey_policy);
5794 if (err)
5795 return err;
5796
5797 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5798 return -ERANGE;
5799 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5800 return -ERANGE;
5801 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5802 return -ERANGE;
5803
5804 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5805 NL80211_KEK_LEN);
5806 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5807 NL80211_KCK_LEN);
5808 memcpy(rekey_data.replay_ctr,
5809 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5810 NL80211_REPLAY_CTR_LEN);
5811
5812 wdev_lock(wdev);
5813 if (!wdev->current_bss) {
5814 err = -ENOTCONN;
5815 goto out;
5816 }
5817
5818 if (!rdev->ops->set_rekey_data) {
5819 err = -EOPNOTSUPP;
5820 goto out;
5821 }
5822
5823 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5824 out:
5825 wdev_unlock(wdev);
5826 return err;
5827 }
5828
5829 #define NL80211_FLAG_NEED_WIPHY 0x01
5830 #define NL80211_FLAG_NEED_NETDEV 0x02
5831 #define NL80211_FLAG_NEED_RTNL 0x04
5832 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5833 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5834 NL80211_FLAG_CHECK_NETDEV_UP)
5835
5836 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5837 struct genl_info *info)
5838 {
5839 struct cfg80211_registered_device *rdev;
5840 struct net_device *dev;
5841 int err;
5842 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5843
5844 if (rtnl)
5845 rtnl_lock();
5846
5847 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5848 rdev = cfg80211_get_dev_from_info(info);
5849 if (IS_ERR(rdev)) {
5850 if (rtnl)
5851 rtnl_unlock();
5852 return PTR_ERR(rdev);
5853 }
5854 info->user_ptr[0] = rdev;
5855 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5856 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5857 if (err) {
5858 if (rtnl)
5859 rtnl_unlock();
5860 return err;
5861 }
5862 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5863 !netif_running(dev)) {
5864 cfg80211_unlock_rdev(rdev);
5865 dev_put(dev);
5866 if (rtnl)
5867 rtnl_unlock();
5868 return -ENETDOWN;
5869 }
5870 info->user_ptr[0] = rdev;
5871 info->user_ptr[1] = dev;
5872 }
5873
5874 return 0;
5875 }
5876
5877 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5878 struct genl_info *info)
5879 {
5880 if (info->user_ptr[0])
5881 cfg80211_unlock_rdev(info->user_ptr[0]);
5882 if (info->user_ptr[1])
5883 dev_put(info->user_ptr[1]);
5884 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5885 rtnl_unlock();
5886 }
5887
5888 static struct genl_ops nl80211_ops[] = {
5889 {
5890 .cmd = NL80211_CMD_GET_WIPHY,
5891 .doit = nl80211_get_wiphy,
5892 .dumpit = nl80211_dump_wiphy,
5893 .policy = nl80211_policy,
5894 /* can be retrieved by unprivileged users */
5895 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5896 },
5897 {
5898 .cmd = NL80211_CMD_SET_WIPHY,
5899 .doit = nl80211_set_wiphy,
5900 .policy = nl80211_policy,
5901 .flags = GENL_ADMIN_PERM,
5902 .internal_flags = NL80211_FLAG_NEED_RTNL,
5903 },
5904 {
5905 .cmd = NL80211_CMD_GET_INTERFACE,
5906 .doit = nl80211_get_interface,
5907 .dumpit = nl80211_dump_interface,
5908 .policy = nl80211_policy,
5909 /* can be retrieved by unprivileged users */
5910 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5911 },
5912 {
5913 .cmd = NL80211_CMD_SET_INTERFACE,
5914 .doit = nl80211_set_interface,
5915 .policy = nl80211_policy,
5916 .flags = GENL_ADMIN_PERM,
5917 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5918 NL80211_FLAG_NEED_RTNL,
5919 },
5920 {
5921 .cmd = NL80211_CMD_NEW_INTERFACE,
5922 .doit = nl80211_new_interface,
5923 .policy = nl80211_policy,
5924 .flags = GENL_ADMIN_PERM,
5925 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5926 NL80211_FLAG_NEED_RTNL,
5927 },
5928 {
5929 .cmd = NL80211_CMD_DEL_INTERFACE,
5930 .doit = nl80211_del_interface,
5931 .policy = nl80211_policy,
5932 .flags = GENL_ADMIN_PERM,
5933 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5934 NL80211_FLAG_NEED_RTNL,
5935 },
5936 {
5937 .cmd = NL80211_CMD_GET_KEY,
5938 .doit = nl80211_get_key,
5939 .policy = nl80211_policy,
5940 .flags = GENL_ADMIN_PERM,
5941 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5942 NL80211_FLAG_NEED_RTNL,
5943 },
5944 {
5945 .cmd = NL80211_CMD_SET_KEY,
5946 .doit = nl80211_set_key,
5947 .policy = nl80211_policy,
5948 .flags = GENL_ADMIN_PERM,
5949 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5950 NL80211_FLAG_NEED_RTNL,
5951 },
5952 {
5953 .cmd = NL80211_CMD_NEW_KEY,
5954 .doit = nl80211_new_key,
5955 .policy = nl80211_policy,
5956 .flags = GENL_ADMIN_PERM,
5957 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5958 NL80211_FLAG_NEED_RTNL,
5959 },
5960 {
5961 .cmd = NL80211_CMD_DEL_KEY,
5962 .doit = nl80211_del_key,
5963 .policy = nl80211_policy,
5964 .flags = GENL_ADMIN_PERM,
5965 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5966 NL80211_FLAG_NEED_RTNL,
5967 },
5968 {
5969 .cmd = NL80211_CMD_SET_BEACON,
5970 .policy = nl80211_policy,
5971 .flags = GENL_ADMIN_PERM,
5972 .doit = nl80211_addset_beacon,
5973 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5974 NL80211_FLAG_NEED_RTNL,
5975 },
5976 {
5977 .cmd = NL80211_CMD_NEW_BEACON,
5978 .policy = nl80211_policy,
5979 .flags = GENL_ADMIN_PERM,
5980 .doit = nl80211_addset_beacon,
5981 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5982 NL80211_FLAG_NEED_RTNL,
5983 },
5984 {
5985 .cmd = NL80211_CMD_DEL_BEACON,
5986 .policy = nl80211_policy,
5987 .flags = GENL_ADMIN_PERM,
5988 .doit = nl80211_del_beacon,
5989 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5990 NL80211_FLAG_NEED_RTNL,
5991 },
5992 {
5993 .cmd = NL80211_CMD_GET_STATION,
5994 .doit = nl80211_get_station,
5995 .dumpit = nl80211_dump_station,
5996 .policy = nl80211_policy,
5997 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5998 NL80211_FLAG_NEED_RTNL,
5999 },
6000 {
6001 .cmd = NL80211_CMD_SET_STATION,
6002 .doit = nl80211_set_station,
6003 .policy = nl80211_policy,
6004 .flags = GENL_ADMIN_PERM,
6005 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6006 NL80211_FLAG_NEED_RTNL,
6007 },
6008 {
6009 .cmd = NL80211_CMD_NEW_STATION,
6010 .doit = nl80211_new_station,
6011 .policy = nl80211_policy,
6012 .flags = GENL_ADMIN_PERM,
6013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6014 NL80211_FLAG_NEED_RTNL,
6015 },
6016 {
6017 .cmd = NL80211_CMD_DEL_STATION,
6018 .doit = nl80211_del_station,
6019 .policy = nl80211_policy,
6020 .flags = GENL_ADMIN_PERM,
6021 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6022 NL80211_FLAG_NEED_RTNL,
6023 },
6024 {
6025 .cmd = NL80211_CMD_GET_MPATH,
6026 .doit = nl80211_get_mpath,
6027 .dumpit = nl80211_dump_mpath,
6028 .policy = nl80211_policy,
6029 .flags = GENL_ADMIN_PERM,
6030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6031 NL80211_FLAG_NEED_RTNL,
6032 },
6033 {
6034 .cmd = NL80211_CMD_SET_MPATH,
6035 .doit = nl80211_set_mpath,
6036 .policy = nl80211_policy,
6037 .flags = GENL_ADMIN_PERM,
6038 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6039 NL80211_FLAG_NEED_RTNL,
6040 },
6041 {
6042 .cmd = NL80211_CMD_NEW_MPATH,
6043 .doit = nl80211_new_mpath,
6044 .policy = nl80211_policy,
6045 .flags = GENL_ADMIN_PERM,
6046 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6047 NL80211_FLAG_NEED_RTNL,
6048 },
6049 {
6050 .cmd = NL80211_CMD_DEL_MPATH,
6051 .doit = nl80211_del_mpath,
6052 .policy = nl80211_policy,
6053 .flags = GENL_ADMIN_PERM,
6054 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6055 NL80211_FLAG_NEED_RTNL,
6056 },
6057 {
6058 .cmd = NL80211_CMD_SET_BSS,
6059 .doit = nl80211_set_bss,
6060 .policy = nl80211_policy,
6061 .flags = GENL_ADMIN_PERM,
6062 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6063 NL80211_FLAG_NEED_RTNL,
6064 },
6065 {
6066 .cmd = NL80211_CMD_GET_REG,
6067 .doit = nl80211_get_reg,
6068 .policy = nl80211_policy,
6069 /* can be retrieved by unprivileged users */
6070 },
6071 {
6072 .cmd = NL80211_CMD_SET_REG,
6073 .doit = nl80211_set_reg,
6074 .policy = nl80211_policy,
6075 .flags = GENL_ADMIN_PERM,
6076 },
6077 {
6078 .cmd = NL80211_CMD_REQ_SET_REG,
6079 .doit = nl80211_req_set_reg,
6080 .policy = nl80211_policy,
6081 .flags = GENL_ADMIN_PERM,
6082 },
6083 {
6084 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6085 .doit = nl80211_get_mesh_config,
6086 .policy = nl80211_policy,
6087 /* can be retrieved by unprivileged users */
6088 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6089 NL80211_FLAG_NEED_RTNL,
6090 },
6091 {
6092 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6093 .doit = nl80211_update_mesh_config,
6094 .policy = nl80211_policy,
6095 .flags = GENL_ADMIN_PERM,
6096 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6097 NL80211_FLAG_NEED_RTNL,
6098 },
6099 {
6100 .cmd = NL80211_CMD_TRIGGER_SCAN,
6101 .doit = nl80211_trigger_scan,
6102 .policy = nl80211_policy,
6103 .flags = GENL_ADMIN_PERM,
6104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6105 NL80211_FLAG_NEED_RTNL,
6106 },
6107 {
6108 .cmd = NL80211_CMD_GET_SCAN,
6109 .policy = nl80211_policy,
6110 .dumpit = nl80211_dump_scan,
6111 },
6112 {
6113 .cmd = NL80211_CMD_START_SCHED_SCAN,
6114 .doit = nl80211_start_sched_scan,
6115 .policy = nl80211_policy,
6116 .flags = GENL_ADMIN_PERM,
6117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6118 NL80211_FLAG_NEED_RTNL,
6119 },
6120 {
6121 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6122 .doit = nl80211_stop_sched_scan,
6123 .policy = nl80211_policy,
6124 .flags = GENL_ADMIN_PERM,
6125 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6126 NL80211_FLAG_NEED_RTNL,
6127 },
6128 {
6129 .cmd = NL80211_CMD_AUTHENTICATE,
6130 .doit = nl80211_authenticate,
6131 .policy = nl80211_policy,
6132 .flags = GENL_ADMIN_PERM,
6133 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6134 NL80211_FLAG_NEED_RTNL,
6135 },
6136 {
6137 .cmd = NL80211_CMD_ASSOCIATE,
6138 .doit = nl80211_associate,
6139 .policy = nl80211_policy,
6140 .flags = GENL_ADMIN_PERM,
6141 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6142 NL80211_FLAG_NEED_RTNL,
6143 },
6144 {
6145 .cmd = NL80211_CMD_DEAUTHENTICATE,
6146 .doit = nl80211_deauthenticate,
6147 .policy = nl80211_policy,
6148 .flags = GENL_ADMIN_PERM,
6149 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6150 NL80211_FLAG_NEED_RTNL,
6151 },
6152 {
6153 .cmd = NL80211_CMD_DISASSOCIATE,
6154 .doit = nl80211_disassociate,
6155 .policy = nl80211_policy,
6156 .flags = GENL_ADMIN_PERM,
6157 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6158 NL80211_FLAG_NEED_RTNL,
6159 },
6160 {
6161 .cmd = NL80211_CMD_JOIN_IBSS,
6162 .doit = nl80211_join_ibss,
6163 .policy = nl80211_policy,
6164 .flags = GENL_ADMIN_PERM,
6165 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6166 NL80211_FLAG_NEED_RTNL,
6167 },
6168 {
6169 .cmd = NL80211_CMD_LEAVE_IBSS,
6170 .doit = nl80211_leave_ibss,
6171 .policy = nl80211_policy,
6172 .flags = GENL_ADMIN_PERM,
6173 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6174 NL80211_FLAG_NEED_RTNL,
6175 },
6176 #ifdef CONFIG_NL80211_TESTMODE
6177 {
6178 .cmd = NL80211_CMD_TESTMODE,
6179 .doit = nl80211_testmode_do,
6180 .dumpit = nl80211_testmode_dump,
6181 .policy = nl80211_policy,
6182 .flags = GENL_ADMIN_PERM,
6183 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6184 NL80211_FLAG_NEED_RTNL,
6185 },
6186 #endif
6187 {
6188 .cmd = NL80211_CMD_CONNECT,
6189 .doit = nl80211_connect,
6190 .policy = nl80211_policy,
6191 .flags = GENL_ADMIN_PERM,
6192 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6193 NL80211_FLAG_NEED_RTNL,
6194 },
6195 {
6196 .cmd = NL80211_CMD_DISCONNECT,
6197 .doit = nl80211_disconnect,
6198 .policy = nl80211_policy,
6199 .flags = GENL_ADMIN_PERM,
6200 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6201 NL80211_FLAG_NEED_RTNL,
6202 },
6203 {
6204 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6205 .doit = nl80211_wiphy_netns,
6206 .policy = nl80211_policy,
6207 .flags = GENL_ADMIN_PERM,
6208 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6209 NL80211_FLAG_NEED_RTNL,
6210 },
6211 {
6212 .cmd = NL80211_CMD_GET_SURVEY,
6213 .policy = nl80211_policy,
6214 .dumpit = nl80211_dump_survey,
6215 },
6216 {
6217 .cmd = NL80211_CMD_SET_PMKSA,
6218 .doit = nl80211_setdel_pmksa,
6219 .policy = nl80211_policy,
6220 .flags = GENL_ADMIN_PERM,
6221 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6222 NL80211_FLAG_NEED_RTNL,
6223 },
6224 {
6225 .cmd = NL80211_CMD_DEL_PMKSA,
6226 .doit = nl80211_setdel_pmksa,
6227 .policy = nl80211_policy,
6228 .flags = GENL_ADMIN_PERM,
6229 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6230 NL80211_FLAG_NEED_RTNL,
6231 },
6232 {
6233 .cmd = NL80211_CMD_FLUSH_PMKSA,
6234 .doit = nl80211_flush_pmksa,
6235 .policy = nl80211_policy,
6236 .flags = GENL_ADMIN_PERM,
6237 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6238 NL80211_FLAG_NEED_RTNL,
6239 },
6240 {
6241 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6242 .doit = nl80211_remain_on_channel,
6243 .policy = nl80211_policy,
6244 .flags = GENL_ADMIN_PERM,
6245 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6246 NL80211_FLAG_NEED_RTNL,
6247 },
6248 {
6249 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6250 .doit = nl80211_cancel_remain_on_channel,
6251 .policy = nl80211_policy,
6252 .flags = GENL_ADMIN_PERM,
6253 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6254 NL80211_FLAG_NEED_RTNL,
6255 },
6256 {
6257 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6258 .doit = nl80211_set_tx_bitrate_mask,
6259 .policy = nl80211_policy,
6260 .flags = GENL_ADMIN_PERM,
6261 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6262 NL80211_FLAG_NEED_RTNL,
6263 },
6264 {
6265 .cmd = NL80211_CMD_REGISTER_FRAME,
6266 .doit = nl80211_register_mgmt,
6267 .policy = nl80211_policy,
6268 .flags = GENL_ADMIN_PERM,
6269 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6270 NL80211_FLAG_NEED_RTNL,
6271 },
6272 {
6273 .cmd = NL80211_CMD_FRAME,
6274 .doit = nl80211_tx_mgmt,
6275 .policy = nl80211_policy,
6276 .flags = GENL_ADMIN_PERM,
6277 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6278 NL80211_FLAG_NEED_RTNL,
6279 },
6280 {
6281 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6282 .doit = nl80211_tx_mgmt_cancel_wait,
6283 .policy = nl80211_policy,
6284 .flags = GENL_ADMIN_PERM,
6285 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6286 NL80211_FLAG_NEED_RTNL,
6287 },
6288 {
6289 .cmd = NL80211_CMD_SET_POWER_SAVE,
6290 .doit = nl80211_set_power_save,
6291 .policy = nl80211_policy,
6292 .flags = GENL_ADMIN_PERM,
6293 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6294 NL80211_FLAG_NEED_RTNL,
6295 },
6296 {
6297 .cmd = NL80211_CMD_GET_POWER_SAVE,
6298 .doit = nl80211_get_power_save,
6299 .policy = nl80211_policy,
6300 /* can be retrieved by unprivileged users */
6301 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6302 NL80211_FLAG_NEED_RTNL,
6303 },
6304 {
6305 .cmd = NL80211_CMD_SET_CQM,
6306 .doit = nl80211_set_cqm,
6307 .policy = nl80211_policy,
6308 .flags = GENL_ADMIN_PERM,
6309 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6310 NL80211_FLAG_NEED_RTNL,
6311 },
6312 {
6313 .cmd = NL80211_CMD_SET_CHANNEL,
6314 .doit = nl80211_set_channel,
6315 .policy = nl80211_policy,
6316 .flags = GENL_ADMIN_PERM,
6317 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6318 NL80211_FLAG_NEED_RTNL,
6319 },
6320 {
6321 .cmd = NL80211_CMD_SET_WDS_PEER,
6322 .doit = nl80211_set_wds_peer,
6323 .policy = nl80211_policy,
6324 .flags = GENL_ADMIN_PERM,
6325 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6326 NL80211_FLAG_NEED_RTNL,
6327 },
6328 {
6329 .cmd = NL80211_CMD_JOIN_MESH,
6330 .doit = nl80211_join_mesh,
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_LEAVE_MESH,
6338 .doit = nl80211_leave_mesh,
6339 .policy = nl80211_policy,
6340 .flags = GENL_ADMIN_PERM,
6341 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6342 NL80211_FLAG_NEED_RTNL,
6343 },
6344 {
6345 .cmd = NL80211_CMD_GET_WOWLAN,
6346 .doit = nl80211_get_wowlan,
6347 .policy = nl80211_policy,
6348 /* can be retrieved by unprivileged users */
6349 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6350 NL80211_FLAG_NEED_RTNL,
6351 },
6352 {
6353 .cmd = NL80211_CMD_SET_WOWLAN,
6354 .doit = nl80211_set_wowlan,
6355 .policy = nl80211_policy,
6356 .flags = GENL_ADMIN_PERM,
6357 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6358 NL80211_FLAG_NEED_RTNL,
6359 },
6360 {
6361 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6362 .doit = nl80211_set_rekey_data,
6363 .policy = nl80211_policy,
6364 .flags = GENL_ADMIN_PERM,
6365 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6366 NL80211_FLAG_NEED_RTNL,
6367 },
6368 {
6369 .cmd = NL80211_CMD_TDLS_MGMT,
6370 .doit = nl80211_tdls_mgmt,
6371 .policy = nl80211_policy,
6372 .flags = GENL_ADMIN_PERM,
6373 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6374 NL80211_FLAG_NEED_RTNL,
6375 },
6376 {
6377 .cmd = NL80211_CMD_TDLS_OPER,
6378 .doit = nl80211_tdls_oper,
6379 .policy = nl80211_policy,
6380 .flags = GENL_ADMIN_PERM,
6381 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6382 NL80211_FLAG_NEED_RTNL,
6383 },
6384 };
6385
6386 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6387 .name = "mlme",
6388 };
6389
6390 /* multicast groups */
6391 static struct genl_multicast_group nl80211_config_mcgrp = {
6392 .name = "config",
6393 };
6394 static struct genl_multicast_group nl80211_scan_mcgrp = {
6395 .name = "scan",
6396 };
6397 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6398 .name = "regulatory",
6399 };
6400
6401 /* notification functions */
6402
6403 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6404 {
6405 struct sk_buff *msg;
6406
6407 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6408 if (!msg)
6409 return;
6410
6411 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6412 nlmsg_free(msg);
6413 return;
6414 }
6415
6416 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6417 nl80211_config_mcgrp.id, GFP_KERNEL);
6418 }
6419
6420 static int nl80211_add_scan_req(struct sk_buff *msg,
6421 struct cfg80211_registered_device *rdev)
6422 {
6423 struct cfg80211_scan_request *req = rdev->scan_req;
6424 struct nlattr *nest;
6425 int i;
6426
6427 ASSERT_RDEV_LOCK(rdev);
6428
6429 if (WARN_ON(!req))
6430 return 0;
6431
6432 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6433 if (!nest)
6434 goto nla_put_failure;
6435 for (i = 0; i < req->n_ssids; i++)
6436 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6437 nla_nest_end(msg, nest);
6438
6439 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6440 if (!nest)
6441 goto nla_put_failure;
6442 for (i = 0; i < req->n_channels; i++)
6443 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6444 nla_nest_end(msg, nest);
6445
6446 if (req->ie)
6447 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6448
6449 return 0;
6450 nla_put_failure:
6451 return -ENOBUFS;
6452 }
6453
6454 static int nl80211_send_scan_msg(struct sk_buff *msg,
6455 struct cfg80211_registered_device *rdev,
6456 struct net_device *netdev,
6457 u32 pid, u32 seq, int flags,
6458 u32 cmd)
6459 {
6460 void *hdr;
6461
6462 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6463 if (!hdr)
6464 return -1;
6465
6466 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6467 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6468
6469 /* ignore errors and send incomplete event anyway */
6470 nl80211_add_scan_req(msg, rdev);
6471
6472 return genlmsg_end(msg, hdr);
6473
6474 nla_put_failure:
6475 genlmsg_cancel(msg, hdr);
6476 return -EMSGSIZE;
6477 }
6478
6479 static int
6480 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6481 struct cfg80211_registered_device *rdev,
6482 struct net_device *netdev,
6483 u32 pid, u32 seq, int flags, u32 cmd)
6484 {
6485 void *hdr;
6486
6487 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6488 if (!hdr)
6489 return -1;
6490
6491 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6492 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6493
6494 return genlmsg_end(msg, hdr);
6495
6496 nla_put_failure:
6497 genlmsg_cancel(msg, hdr);
6498 return -EMSGSIZE;
6499 }
6500
6501 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6502 struct net_device *netdev)
6503 {
6504 struct sk_buff *msg;
6505
6506 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6507 if (!msg)
6508 return;
6509
6510 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6511 NL80211_CMD_TRIGGER_SCAN) < 0) {
6512 nlmsg_free(msg);
6513 return;
6514 }
6515
6516 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6517 nl80211_scan_mcgrp.id, GFP_KERNEL);
6518 }
6519
6520 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6521 struct net_device *netdev)
6522 {
6523 struct sk_buff *msg;
6524
6525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6526 if (!msg)
6527 return;
6528
6529 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6530 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6531 nlmsg_free(msg);
6532 return;
6533 }
6534
6535 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6536 nl80211_scan_mcgrp.id, GFP_KERNEL);
6537 }
6538
6539 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6540 struct net_device *netdev)
6541 {
6542 struct sk_buff *msg;
6543
6544 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6545 if (!msg)
6546 return;
6547
6548 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6549 NL80211_CMD_SCAN_ABORTED) < 0) {
6550 nlmsg_free(msg);
6551 return;
6552 }
6553
6554 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6555 nl80211_scan_mcgrp.id, GFP_KERNEL);
6556 }
6557
6558 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6559 struct net_device *netdev)
6560 {
6561 struct sk_buff *msg;
6562
6563 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6564 if (!msg)
6565 return;
6566
6567 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6568 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6569 nlmsg_free(msg);
6570 return;
6571 }
6572
6573 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6574 nl80211_scan_mcgrp.id, GFP_KERNEL);
6575 }
6576
6577 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6578 struct net_device *netdev, u32 cmd)
6579 {
6580 struct sk_buff *msg;
6581
6582 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6583 if (!msg)
6584 return;
6585
6586 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6587 nlmsg_free(msg);
6588 return;
6589 }
6590
6591 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6592 nl80211_scan_mcgrp.id, GFP_KERNEL);
6593 }
6594
6595 /*
6596 * This can happen on global regulatory changes or device specific settings
6597 * based on custom world regulatory domains.
6598 */
6599 void nl80211_send_reg_change_event(struct regulatory_request *request)
6600 {
6601 struct sk_buff *msg;
6602 void *hdr;
6603
6604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6605 if (!msg)
6606 return;
6607
6608 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6609 if (!hdr) {
6610 nlmsg_free(msg);
6611 return;
6612 }
6613
6614 /* Userspace can always count this one always being set */
6615 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6616
6617 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6618 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6619 NL80211_REGDOM_TYPE_WORLD);
6620 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6621 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6622 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6623 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6624 request->intersect)
6625 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6626 NL80211_REGDOM_TYPE_INTERSECTION);
6627 else {
6628 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6629 NL80211_REGDOM_TYPE_COUNTRY);
6630 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6631 }
6632
6633 if (wiphy_idx_valid(request->wiphy_idx))
6634 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6635
6636 if (genlmsg_end(msg, hdr) < 0) {
6637 nlmsg_free(msg);
6638 return;
6639 }
6640
6641 rcu_read_lock();
6642 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6643 GFP_ATOMIC);
6644 rcu_read_unlock();
6645
6646 return;
6647
6648 nla_put_failure:
6649 genlmsg_cancel(msg, hdr);
6650 nlmsg_free(msg);
6651 }
6652
6653 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6654 struct net_device *netdev,
6655 const u8 *buf, size_t len,
6656 enum nl80211_commands cmd, gfp_t gfp)
6657 {
6658 struct sk_buff *msg;
6659 void *hdr;
6660
6661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6662 if (!msg)
6663 return;
6664
6665 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6666 if (!hdr) {
6667 nlmsg_free(msg);
6668 return;
6669 }
6670
6671 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6672 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6673 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6674
6675 if (genlmsg_end(msg, hdr) < 0) {
6676 nlmsg_free(msg);
6677 return;
6678 }
6679
6680 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6681 nl80211_mlme_mcgrp.id, gfp);
6682 return;
6683
6684 nla_put_failure:
6685 genlmsg_cancel(msg, hdr);
6686 nlmsg_free(msg);
6687 }
6688
6689 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6690 struct net_device *netdev, const u8 *buf,
6691 size_t len, gfp_t gfp)
6692 {
6693 nl80211_send_mlme_event(rdev, netdev, buf, len,
6694 NL80211_CMD_AUTHENTICATE, gfp);
6695 }
6696
6697 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6698 struct net_device *netdev, const u8 *buf,
6699 size_t len, gfp_t gfp)
6700 {
6701 nl80211_send_mlme_event(rdev, netdev, buf, len,
6702 NL80211_CMD_ASSOCIATE, gfp);
6703 }
6704
6705 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6706 struct net_device *netdev, const u8 *buf,
6707 size_t len, gfp_t gfp)
6708 {
6709 nl80211_send_mlme_event(rdev, netdev, buf, len,
6710 NL80211_CMD_DEAUTHENTICATE, gfp);
6711 }
6712
6713 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6714 struct net_device *netdev, const u8 *buf,
6715 size_t len, gfp_t gfp)
6716 {
6717 nl80211_send_mlme_event(rdev, netdev, buf, len,
6718 NL80211_CMD_DISASSOCIATE, gfp);
6719 }
6720
6721 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6722 struct net_device *netdev, const u8 *buf,
6723 size_t len, gfp_t gfp)
6724 {
6725 nl80211_send_mlme_event(rdev, netdev, buf, len,
6726 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6727 }
6728
6729 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6730 struct net_device *netdev, const u8 *buf,
6731 size_t len, gfp_t gfp)
6732 {
6733 nl80211_send_mlme_event(rdev, netdev, buf, len,
6734 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6735 }
6736
6737 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6738 struct net_device *netdev, int cmd,
6739 const u8 *addr, gfp_t gfp)
6740 {
6741 struct sk_buff *msg;
6742 void *hdr;
6743
6744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6745 if (!msg)
6746 return;
6747
6748 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6749 if (!hdr) {
6750 nlmsg_free(msg);
6751 return;
6752 }
6753
6754 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6755 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6756 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6757 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6758
6759 if (genlmsg_end(msg, hdr) < 0) {
6760 nlmsg_free(msg);
6761 return;
6762 }
6763
6764 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6765 nl80211_mlme_mcgrp.id, gfp);
6766 return;
6767
6768 nla_put_failure:
6769 genlmsg_cancel(msg, hdr);
6770 nlmsg_free(msg);
6771 }
6772
6773 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6774 struct net_device *netdev, const u8 *addr,
6775 gfp_t gfp)
6776 {
6777 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6778 addr, gfp);
6779 }
6780
6781 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6782 struct net_device *netdev, const u8 *addr,
6783 gfp_t gfp)
6784 {
6785 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6786 addr, gfp);
6787 }
6788
6789 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6790 struct net_device *netdev, const u8 *bssid,
6791 const u8 *req_ie, size_t req_ie_len,
6792 const u8 *resp_ie, size_t resp_ie_len,
6793 u16 status, gfp_t gfp)
6794 {
6795 struct sk_buff *msg;
6796 void *hdr;
6797
6798 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6799 if (!msg)
6800 return;
6801
6802 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6803 if (!hdr) {
6804 nlmsg_free(msg);
6805 return;
6806 }
6807
6808 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6809 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6810 if (bssid)
6811 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6812 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6813 if (req_ie)
6814 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6815 if (resp_ie)
6816 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6817
6818 if (genlmsg_end(msg, hdr) < 0) {
6819 nlmsg_free(msg);
6820 return;
6821 }
6822
6823 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6824 nl80211_mlme_mcgrp.id, gfp);
6825 return;
6826
6827 nla_put_failure:
6828 genlmsg_cancel(msg, hdr);
6829 nlmsg_free(msg);
6830
6831 }
6832
6833 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6834 struct net_device *netdev, const u8 *bssid,
6835 const u8 *req_ie, size_t req_ie_len,
6836 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6837 {
6838 struct sk_buff *msg;
6839 void *hdr;
6840
6841 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6842 if (!msg)
6843 return;
6844
6845 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6846 if (!hdr) {
6847 nlmsg_free(msg);
6848 return;
6849 }
6850
6851 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6852 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6853 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6854 if (req_ie)
6855 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6856 if (resp_ie)
6857 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6858
6859 if (genlmsg_end(msg, hdr) < 0) {
6860 nlmsg_free(msg);
6861 return;
6862 }
6863
6864 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6865 nl80211_mlme_mcgrp.id, gfp);
6866 return;
6867
6868 nla_put_failure:
6869 genlmsg_cancel(msg, hdr);
6870 nlmsg_free(msg);
6871
6872 }
6873
6874 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6875 struct net_device *netdev, u16 reason,
6876 const u8 *ie, size_t ie_len, bool from_ap)
6877 {
6878 struct sk_buff *msg;
6879 void *hdr;
6880
6881 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6882 if (!msg)
6883 return;
6884
6885 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6886 if (!hdr) {
6887 nlmsg_free(msg);
6888 return;
6889 }
6890
6891 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6892 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6893 if (from_ap && reason)
6894 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6895 if (from_ap)
6896 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6897 if (ie)
6898 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6899
6900 if (genlmsg_end(msg, hdr) < 0) {
6901 nlmsg_free(msg);
6902 return;
6903 }
6904
6905 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6906 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6907 return;
6908
6909 nla_put_failure:
6910 genlmsg_cancel(msg, hdr);
6911 nlmsg_free(msg);
6912
6913 }
6914
6915 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6916 struct net_device *netdev, const u8 *bssid,
6917 gfp_t gfp)
6918 {
6919 struct sk_buff *msg;
6920 void *hdr;
6921
6922 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6923 if (!msg)
6924 return;
6925
6926 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6927 if (!hdr) {
6928 nlmsg_free(msg);
6929 return;
6930 }
6931
6932 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6933 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6934 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6935
6936 if (genlmsg_end(msg, hdr) < 0) {
6937 nlmsg_free(msg);
6938 return;
6939 }
6940
6941 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6942 nl80211_mlme_mcgrp.id, gfp);
6943 return;
6944
6945 nla_put_failure:
6946 genlmsg_cancel(msg, hdr);
6947 nlmsg_free(msg);
6948 }
6949
6950 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6951 struct net_device *netdev,
6952 const u8 *macaddr, const u8* ie, u8 ie_len,
6953 gfp_t gfp)
6954 {
6955 struct sk_buff *msg;
6956 void *hdr;
6957
6958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6959 if (!msg)
6960 return;
6961
6962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6963 if (!hdr) {
6964 nlmsg_free(msg);
6965 return;
6966 }
6967
6968 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6969 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6970 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6971 if (ie_len && ie)
6972 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6973
6974 if (genlmsg_end(msg, hdr) < 0) {
6975 nlmsg_free(msg);
6976 return;
6977 }
6978
6979 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6980 nl80211_mlme_mcgrp.id, gfp);
6981 return;
6982
6983 nla_put_failure:
6984 genlmsg_cancel(msg, hdr);
6985 nlmsg_free(msg);
6986 }
6987
6988 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6989 struct net_device *netdev, const u8 *addr,
6990 enum nl80211_key_type key_type, int key_id,
6991 const u8 *tsc, gfp_t gfp)
6992 {
6993 struct sk_buff *msg;
6994 void *hdr;
6995
6996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6997 if (!msg)
6998 return;
6999
7000 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7001 if (!hdr) {
7002 nlmsg_free(msg);
7003 return;
7004 }
7005
7006 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7007 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7008 if (addr)
7009 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7010 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7011 if (key_id != -1)
7012 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7013 if (tsc)
7014 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7015
7016 if (genlmsg_end(msg, hdr) < 0) {
7017 nlmsg_free(msg);
7018 return;
7019 }
7020
7021 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7022 nl80211_mlme_mcgrp.id, gfp);
7023 return;
7024
7025 nla_put_failure:
7026 genlmsg_cancel(msg, hdr);
7027 nlmsg_free(msg);
7028 }
7029
7030 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7031 struct ieee80211_channel *channel_before,
7032 struct ieee80211_channel *channel_after)
7033 {
7034 struct sk_buff *msg;
7035 void *hdr;
7036 struct nlattr *nl_freq;
7037
7038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7039 if (!msg)
7040 return;
7041
7042 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7043 if (!hdr) {
7044 nlmsg_free(msg);
7045 return;
7046 }
7047
7048 /*
7049 * Since we are applying the beacon hint to a wiphy we know its
7050 * wiphy_idx is valid
7051 */
7052 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7053
7054 /* Before */
7055 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7056 if (!nl_freq)
7057 goto nla_put_failure;
7058 if (nl80211_msg_put_channel(msg, channel_before))
7059 goto nla_put_failure;
7060 nla_nest_end(msg, nl_freq);
7061
7062 /* After */
7063 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7064 if (!nl_freq)
7065 goto nla_put_failure;
7066 if (nl80211_msg_put_channel(msg, channel_after))
7067 goto nla_put_failure;
7068 nla_nest_end(msg, nl_freq);
7069
7070 if (genlmsg_end(msg, hdr) < 0) {
7071 nlmsg_free(msg);
7072 return;
7073 }
7074
7075 rcu_read_lock();
7076 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7077 GFP_ATOMIC);
7078 rcu_read_unlock();
7079
7080 return;
7081
7082 nla_put_failure:
7083 genlmsg_cancel(msg, hdr);
7084 nlmsg_free(msg);
7085 }
7086
7087 static void nl80211_send_remain_on_chan_event(
7088 int cmd, struct cfg80211_registered_device *rdev,
7089 struct net_device *netdev, u64 cookie,
7090 struct ieee80211_channel *chan,
7091 enum nl80211_channel_type channel_type,
7092 unsigned int duration, gfp_t gfp)
7093 {
7094 struct sk_buff *msg;
7095 void *hdr;
7096
7097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7098 if (!msg)
7099 return;
7100
7101 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7102 if (!hdr) {
7103 nlmsg_free(msg);
7104 return;
7105 }
7106
7107 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7108 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7109 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7110 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7111 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7112
7113 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7114 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7115
7116 if (genlmsg_end(msg, hdr) < 0) {
7117 nlmsg_free(msg);
7118 return;
7119 }
7120
7121 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7122 nl80211_mlme_mcgrp.id, gfp);
7123 return;
7124
7125 nla_put_failure:
7126 genlmsg_cancel(msg, hdr);
7127 nlmsg_free(msg);
7128 }
7129
7130 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7131 struct net_device *netdev, u64 cookie,
7132 struct ieee80211_channel *chan,
7133 enum nl80211_channel_type channel_type,
7134 unsigned int duration, gfp_t gfp)
7135 {
7136 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7137 rdev, netdev, cookie, chan,
7138 channel_type, duration, gfp);
7139 }
7140
7141 void nl80211_send_remain_on_channel_cancel(
7142 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7143 u64 cookie, struct ieee80211_channel *chan,
7144 enum nl80211_channel_type channel_type, gfp_t gfp)
7145 {
7146 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7147 rdev, netdev, cookie, chan,
7148 channel_type, 0, gfp);
7149 }
7150
7151 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7152 struct net_device *dev, const u8 *mac_addr,
7153 struct station_info *sinfo, gfp_t gfp)
7154 {
7155 struct sk_buff *msg;
7156
7157 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7158 if (!msg)
7159 return;
7160
7161 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7162 nlmsg_free(msg);
7163 return;
7164 }
7165
7166 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7167 nl80211_mlme_mcgrp.id, gfp);
7168 }
7169
7170 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7171 struct net_device *dev, const u8 *mac_addr,
7172 gfp_t gfp)
7173 {
7174 struct sk_buff *msg;
7175 void *hdr;
7176
7177 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7178 if (!msg)
7179 return;
7180
7181 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7182 if (!hdr) {
7183 nlmsg_free(msg);
7184 return;
7185 }
7186
7187 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7188 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7189
7190 if (genlmsg_end(msg, hdr) < 0) {
7191 nlmsg_free(msg);
7192 return;
7193 }
7194
7195 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7196 nl80211_mlme_mcgrp.id, gfp);
7197 return;
7198
7199 nla_put_failure:
7200 genlmsg_cancel(msg, hdr);
7201 nlmsg_free(msg);
7202 }
7203
7204 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7205 struct net_device *netdev, u32 nlpid,
7206 int freq, const u8 *buf, size_t len, gfp_t gfp)
7207 {
7208 struct sk_buff *msg;
7209 void *hdr;
7210 int err;
7211
7212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7213 if (!msg)
7214 return -ENOMEM;
7215
7216 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7217 if (!hdr) {
7218 nlmsg_free(msg);
7219 return -ENOMEM;
7220 }
7221
7222 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7224 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7225 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7226
7227 err = genlmsg_end(msg, hdr);
7228 if (err < 0) {
7229 nlmsg_free(msg);
7230 return err;
7231 }
7232
7233 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7234 if (err < 0)
7235 return err;
7236 return 0;
7237
7238 nla_put_failure:
7239 genlmsg_cancel(msg, hdr);
7240 nlmsg_free(msg);
7241 return -ENOBUFS;
7242 }
7243
7244 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7245 struct net_device *netdev, u64 cookie,
7246 const u8 *buf, size_t len, bool ack,
7247 gfp_t gfp)
7248 {
7249 struct sk_buff *msg;
7250 void *hdr;
7251
7252 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7253 if (!msg)
7254 return;
7255
7256 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7257 if (!hdr) {
7258 nlmsg_free(msg);
7259 return;
7260 }
7261
7262 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7263 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7264 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7265 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7266 if (ack)
7267 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7268
7269 if (genlmsg_end(msg, hdr) < 0) {
7270 nlmsg_free(msg);
7271 return;
7272 }
7273
7274 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7275 return;
7276
7277 nla_put_failure:
7278 genlmsg_cancel(msg, hdr);
7279 nlmsg_free(msg);
7280 }
7281
7282 void
7283 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7284 struct net_device *netdev,
7285 enum nl80211_cqm_rssi_threshold_event rssi_event,
7286 gfp_t gfp)
7287 {
7288 struct sk_buff *msg;
7289 struct nlattr *pinfoattr;
7290 void *hdr;
7291
7292 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7293 if (!msg)
7294 return;
7295
7296 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7297 if (!hdr) {
7298 nlmsg_free(msg);
7299 return;
7300 }
7301
7302 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7303 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7304
7305 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7306 if (!pinfoattr)
7307 goto nla_put_failure;
7308
7309 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7310 rssi_event);
7311
7312 nla_nest_end(msg, pinfoattr);
7313
7314 if (genlmsg_end(msg, hdr) < 0) {
7315 nlmsg_free(msg);
7316 return;
7317 }
7318
7319 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7320 nl80211_mlme_mcgrp.id, gfp);
7321 return;
7322
7323 nla_put_failure:
7324 genlmsg_cancel(msg, hdr);
7325 nlmsg_free(msg);
7326 }
7327
7328 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7329 struct net_device *netdev, const u8 *bssid,
7330 const u8 *replay_ctr, gfp_t gfp)
7331 {
7332 struct sk_buff *msg;
7333 struct nlattr *rekey_attr;
7334 void *hdr;
7335
7336 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7337 if (!msg)
7338 return;
7339
7340 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7341 if (!hdr) {
7342 nlmsg_free(msg);
7343 return;
7344 }
7345
7346 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7347 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7348 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7349
7350 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7351 if (!rekey_attr)
7352 goto nla_put_failure;
7353
7354 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7355 NL80211_REPLAY_CTR_LEN, replay_ctr);
7356
7357 nla_nest_end(msg, rekey_attr);
7358
7359 if (genlmsg_end(msg, hdr) < 0) {
7360 nlmsg_free(msg);
7361 return;
7362 }
7363
7364 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7365 nl80211_mlme_mcgrp.id, gfp);
7366 return;
7367
7368 nla_put_failure:
7369 genlmsg_cancel(msg, hdr);
7370 nlmsg_free(msg);
7371 }
7372
7373 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7374 struct net_device *netdev, int index,
7375 const u8 *bssid, bool preauth, gfp_t gfp)
7376 {
7377 struct sk_buff *msg;
7378 struct nlattr *attr;
7379 void *hdr;
7380
7381 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7382 if (!msg)
7383 return;
7384
7385 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7386 if (!hdr) {
7387 nlmsg_free(msg);
7388 return;
7389 }
7390
7391 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7392 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7393
7394 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7395 if (!attr)
7396 goto nla_put_failure;
7397
7398 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7399 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7400 if (preauth)
7401 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7402
7403 nla_nest_end(msg, attr);
7404
7405 if (genlmsg_end(msg, hdr) < 0) {
7406 nlmsg_free(msg);
7407 return;
7408 }
7409
7410 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7411 nl80211_mlme_mcgrp.id, gfp);
7412 return;
7413
7414 nla_put_failure:
7415 genlmsg_cancel(msg, hdr);
7416 nlmsg_free(msg);
7417 }
7418
7419 void
7420 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7421 struct net_device *netdev, const u8 *peer,
7422 u32 num_packets, gfp_t gfp)
7423 {
7424 struct sk_buff *msg;
7425 struct nlattr *pinfoattr;
7426 void *hdr;
7427
7428 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7429 if (!msg)
7430 return;
7431
7432 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7433 if (!hdr) {
7434 nlmsg_free(msg);
7435 return;
7436 }
7437
7438 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7439 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7440 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7441
7442 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7443 if (!pinfoattr)
7444 goto nla_put_failure;
7445
7446 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7447
7448 nla_nest_end(msg, pinfoattr);
7449
7450 if (genlmsg_end(msg, hdr) < 0) {
7451 nlmsg_free(msg);
7452 return;
7453 }
7454
7455 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7456 nl80211_mlme_mcgrp.id, gfp);
7457 return;
7458
7459 nla_put_failure:
7460 genlmsg_cancel(msg, hdr);
7461 nlmsg_free(msg);
7462 }
7463
7464 static int nl80211_netlink_notify(struct notifier_block * nb,
7465 unsigned long state,
7466 void *_notify)
7467 {
7468 struct netlink_notify *notify = _notify;
7469 struct cfg80211_registered_device *rdev;
7470 struct wireless_dev *wdev;
7471
7472 if (state != NETLINK_URELEASE)
7473 return NOTIFY_DONE;
7474
7475 rcu_read_lock();
7476
7477 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7478 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7479 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7480
7481 rcu_read_unlock();
7482
7483 return NOTIFY_DONE;
7484 }
7485
7486 static struct notifier_block nl80211_netlink_notifier = {
7487 .notifier_call = nl80211_netlink_notify,
7488 };
7489
7490 /* initialisation/exit functions */
7491
7492 int nl80211_init(void)
7493 {
7494 int err;
7495
7496 err = genl_register_family_with_ops(&nl80211_fam,
7497 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7498 if (err)
7499 return err;
7500
7501 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7502 if (err)
7503 goto err_out;
7504
7505 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7506 if (err)
7507 goto err_out;
7508
7509 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7510 if (err)
7511 goto err_out;
7512
7513 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7514 if (err)
7515 goto err_out;
7516
7517 #ifdef CONFIG_NL80211_TESTMODE
7518 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7519 if (err)
7520 goto err_out;
7521 #endif
7522
7523 err = netlink_register_notifier(&nl80211_netlink_notifier);
7524 if (err)
7525 goto err_out;
7526
7527 return 0;
7528 err_out:
7529 genl_unregister_family(&nl80211_fam);
7530 return err;
7531 }
7532
7533 void nl80211_exit(void)
7534 {
7535 netlink_unregister_notifier(&nl80211_netlink_notifier);
7536 genl_unregister_family(&nl80211_fam);
7537 }
Linus' kernel tree