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cfg80211: Remove strict validation of AKM suites
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
136 .len = NL80211_HT_CAPABILITY_LEN },
137
138 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
139 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
140 .len = IEEE80211_MAX_DATA_LEN },
141 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
142 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
143
144 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
145 .len = IEEE80211_MAX_SSID_LEN },
146 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
147 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
148 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
149 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
150 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
151 [NL80211_ATTR_STA_FLAGS2] = {
152 .len = sizeof(struct nl80211_sta_flag_update),
153 },
154 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
156 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
157 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
158 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
159 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
160 [NL80211_ATTR_PID] = { .type = NLA_U32 },
161 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
162 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
163 .len = WLAN_PMKID_LEN },
164 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
165 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
166 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
167 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
168 .len = IEEE80211_MAX_DATA_LEN },
169 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
170 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
171 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
172 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
173 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
174 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
175 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
176 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
177 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
178 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
179 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
180 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
181 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
182 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
183 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
184 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
185 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
186 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
187 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
188 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
191 .len = IEEE80211_MAX_DATA_LEN },
192 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
193 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
194 };
195
196 /* policy for the key attributes */
197 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
198 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
199 [NL80211_KEY_IDX] = { .type = NLA_U8 },
200 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
201 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
202 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
203 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
204 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
205 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
206 };
207
208 /* policy for the key default flags */
209 static const struct nla_policy
210 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
211 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
212 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
213 };
214
215 /* policy for WoWLAN attributes */
216 static const struct nla_policy
217 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
218 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
219 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
220 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
221 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
222 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
223 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
224 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
225 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
226 };
227
228 /* policy for GTK rekey offload attributes */
229 static const struct nla_policy
230 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
231 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
232 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
233 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
234 };
235
236 static const struct nla_policy
237 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
238 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
239 .len = IEEE80211_MAX_SSID_LEN },
240 };
241
242 /* ifidx get helper */
243 static int nl80211_get_ifidx(struct netlink_callback *cb)
244 {
245 int res;
246
247 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
248 nl80211_fam.attrbuf, nl80211_fam.maxattr,
249 nl80211_policy);
250 if (res)
251 return res;
252
253 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
254 return -EINVAL;
255
256 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
257 if (!res)
258 return -EINVAL;
259 return res;
260 }
261
262 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
263 struct netlink_callback *cb,
264 struct cfg80211_registered_device **rdev,
265 struct net_device **dev)
266 {
267 int ifidx = cb->args[0];
268 int err;
269
270 if (!ifidx)
271 ifidx = nl80211_get_ifidx(cb);
272 if (ifidx < 0)
273 return ifidx;
274
275 cb->args[0] = ifidx;
276
277 rtnl_lock();
278
279 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
280 if (!*dev) {
281 err = -ENODEV;
282 goto out_rtnl;
283 }
284
285 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
286 if (IS_ERR(*rdev)) {
287 err = PTR_ERR(*rdev);
288 goto out_rtnl;
289 }
290
291 return 0;
292 out_rtnl:
293 rtnl_unlock();
294 return err;
295 }
296
297 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
298 {
299 cfg80211_unlock_rdev(rdev);
300 rtnl_unlock();
301 }
302
303 /* IE validation */
304 static bool is_valid_ie_attr(const struct nlattr *attr)
305 {
306 const u8 *pos;
307 int len;
308
309 if (!attr)
310 return true;
311
312 pos = nla_data(attr);
313 len = nla_len(attr);
314
315 while (len) {
316 u8 elemlen;
317
318 if (len < 2)
319 return false;
320 len -= 2;
321
322 elemlen = pos[1];
323 if (elemlen > len)
324 return false;
325
326 len -= elemlen;
327 pos += 2 + elemlen;
328 }
329
330 return true;
331 }
332
333 /* message building helper */
334 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
335 int flags, u8 cmd)
336 {
337 /* since there is no private header just add the generic one */
338 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
339 }
340
341 static int nl80211_msg_put_channel(struct sk_buff *msg,
342 struct ieee80211_channel *chan)
343 {
344 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
345 chan->center_freq);
346
347 if (chan->flags & IEEE80211_CHAN_DISABLED)
348 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
349 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
350 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
351 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
352 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
353 if (chan->flags & IEEE80211_CHAN_RADAR)
354 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
355
356 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
357 DBM_TO_MBM(chan->max_power));
358
359 return 0;
360
361 nla_put_failure:
362 return -ENOBUFS;
363 }
364
365 /* netlink command implementations */
366
367 struct key_parse {
368 struct key_params p;
369 int idx;
370 int type;
371 bool def, defmgmt;
372 bool def_uni, def_multi;
373 };
374
375 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
376 {
377 struct nlattr *tb[NL80211_KEY_MAX + 1];
378 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
379 nl80211_key_policy);
380 if (err)
381 return err;
382
383 k->def = !!tb[NL80211_KEY_DEFAULT];
384 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
385
386 if (k->def) {
387 k->def_uni = true;
388 k->def_multi = true;
389 }
390 if (k->defmgmt)
391 k->def_multi = true;
392
393 if (tb[NL80211_KEY_IDX])
394 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
395
396 if (tb[NL80211_KEY_DATA]) {
397 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
398 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
399 }
400
401 if (tb[NL80211_KEY_SEQ]) {
402 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
403 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
404 }
405
406 if (tb[NL80211_KEY_CIPHER])
407 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
408
409 if (tb[NL80211_KEY_TYPE]) {
410 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
411 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
412 return -EINVAL;
413 }
414
415 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
416 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
417 int err = nla_parse_nested(kdt,
418 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
419 tb[NL80211_KEY_DEFAULT_TYPES],
420 nl80211_key_default_policy);
421 if (err)
422 return err;
423
424 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
425 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
426 }
427
428 return 0;
429 }
430
431 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
432 {
433 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
434 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
435 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
436 }
437
438 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
439 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
440 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
441 }
442
443 if (info->attrs[NL80211_ATTR_KEY_IDX])
444 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
445
446 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
447 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
448
449 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
450 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
451
452 if (k->def) {
453 k->def_uni = true;
454 k->def_multi = true;
455 }
456 if (k->defmgmt)
457 k->def_multi = true;
458
459 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
460 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
461 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
462 return -EINVAL;
463 }
464
465 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
466 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
467 int err = nla_parse_nested(
468 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
469 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
470 nl80211_key_default_policy);
471 if (err)
472 return err;
473
474 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
475 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
476 }
477
478 return 0;
479 }
480
481 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
482 {
483 int err;
484
485 memset(k, 0, sizeof(*k));
486 k->idx = -1;
487 k->type = -1;
488
489 if (info->attrs[NL80211_ATTR_KEY])
490 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
491 else
492 err = nl80211_parse_key_old(info, k);
493
494 if (err)
495 return err;
496
497 if (k->def && k->defmgmt)
498 return -EINVAL;
499
500 if (k->defmgmt) {
501 if (k->def_uni || !k->def_multi)
502 return -EINVAL;
503 }
504
505 if (k->idx != -1) {
506 if (k->defmgmt) {
507 if (k->idx < 4 || k->idx > 5)
508 return -EINVAL;
509 } else if (k->def) {
510 if (k->idx < 0 || k->idx > 3)
511 return -EINVAL;
512 } else {
513 if (k->idx < 0 || k->idx > 5)
514 return -EINVAL;
515 }
516 }
517
518 return 0;
519 }
520
521 static struct cfg80211_cached_keys *
522 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
523 struct nlattr *keys)
524 {
525 struct key_parse parse;
526 struct nlattr *key;
527 struct cfg80211_cached_keys *result;
528 int rem, err, def = 0;
529
530 result = kzalloc(sizeof(*result), GFP_KERNEL);
531 if (!result)
532 return ERR_PTR(-ENOMEM);
533
534 result->def = -1;
535 result->defmgmt = -1;
536
537 nla_for_each_nested(key, keys, rem) {
538 memset(&parse, 0, sizeof(parse));
539 parse.idx = -1;
540
541 err = nl80211_parse_key_new(key, &parse);
542 if (err)
543 goto error;
544 err = -EINVAL;
545 if (!parse.p.key)
546 goto error;
547 if (parse.idx < 0 || parse.idx > 4)
548 goto error;
549 if (parse.def) {
550 if (def)
551 goto error;
552 def = 1;
553 result->def = parse.idx;
554 if (!parse.def_uni || !parse.def_multi)
555 goto error;
556 } else if (parse.defmgmt)
557 goto error;
558 err = cfg80211_validate_key_settings(rdev, &parse.p,
559 parse.idx, false, NULL);
560 if (err)
561 goto error;
562 result->params[parse.idx].cipher = parse.p.cipher;
563 result->params[parse.idx].key_len = parse.p.key_len;
564 result->params[parse.idx].key = result->data[parse.idx];
565 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
566 }
567
568 return result;
569 error:
570 kfree(result);
571 return ERR_PTR(err);
572 }
573
574 static int nl80211_key_allowed(struct wireless_dev *wdev)
575 {
576 ASSERT_WDEV_LOCK(wdev);
577
578 switch (wdev->iftype) {
579 case NL80211_IFTYPE_AP:
580 case NL80211_IFTYPE_AP_VLAN:
581 case NL80211_IFTYPE_P2P_GO:
582 case NL80211_IFTYPE_MESH_POINT:
583 break;
584 case NL80211_IFTYPE_ADHOC:
585 if (!wdev->current_bss)
586 return -ENOLINK;
587 break;
588 case NL80211_IFTYPE_STATION:
589 case NL80211_IFTYPE_P2P_CLIENT:
590 if (wdev->sme_state != CFG80211_SME_CONNECTED)
591 return -ENOLINK;
592 break;
593 default:
594 return -EINVAL;
595 }
596
597 return 0;
598 }
599
600 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
601 {
602 struct nlattr *nl_modes = nla_nest_start(msg, attr);
603 int i;
604
605 if (!nl_modes)
606 goto nla_put_failure;
607
608 i = 0;
609 while (ifmodes) {
610 if (ifmodes & 1)
611 NLA_PUT_FLAG(msg, i);
612 ifmodes >>= 1;
613 i++;
614 }
615
616 nla_nest_end(msg, nl_modes);
617 return 0;
618
619 nla_put_failure:
620 return -ENOBUFS;
621 }
622
623 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
624 struct sk_buff *msg)
625 {
626 struct nlattr *nl_combis;
627 int i, j;
628
629 nl_combis = nla_nest_start(msg,
630 NL80211_ATTR_INTERFACE_COMBINATIONS);
631 if (!nl_combis)
632 goto nla_put_failure;
633
634 for (i = 0; i < wiphy->n_iface_combinations; i++) {
635 const struct ieee80211_iface_combination *c;
636 struct nlattr *nl_combi, *nl_limits;
637
638 c = &wiphy->iface_combinations[i];
639
640 nl_combi = nla_nest_start(msg, i + 1);
641 if (!nl_combi)
642 goto nla_put_failure;
643
644 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
645 if (!nl_limits)
646 goto nla_put_failure;
647
648 for (j = 0; j < c->n_limits; j++) {
649 struct nlattr *nl_limit;
650
651 nl_limit = nla_nest_start(msg, j + 1);
652 if (!nl_limit)
653 goto nla_put_failure;
654 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
655 c->limits[j].max);
656 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
657 c->limits[j].types))
658 goto nla_put_failure;
659 nla_nest_end(msg, nl_limit);
660 }
661
662 nla_nest_end(msg, nl_limits);
663
664 if (c->beacon_int_infra_match)
665 NLA_PUT_FLAG(msg,
666 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
667 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
668 c->num_different_channels);
669 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
670 c->max_interfaces);
671
672 nla_nest_end(msg, nl_combi);
673 }
674
675 nla_nest_end(msg, nl_combis);
676
677 return 0;
678 nla_put_failure:
679 return -ENOBUFS;
680 }
681
682 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
683 struct cfg80211_registered_device *dev)
684 {
685 void *hdr;
686 struct nlattr *nl_bands, *nl_band;
687 struct nlattr *nl_freqs, *nl_freq;
688 struct nlattr *nl_rates, *nl_rate;
689 struct nlattr *nl_cmds;
690 enum ieee80211_band band;
691 struct ieee80211_channel *chan;
692 struct ieee80211_rate *rate;
693 int i;
694 const struct ieee80211_txrx_stypes *mgmt_stypes =
695 dev->wiphy.mgmt_stypes;
696
697 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
698 if (!hdr)
699 return -1;
700
701 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
702 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
703
704 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
705 cfg80211_rdev_list_generation);
706
707 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
708 dev->wiphy.retry_short);
709 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
710 dev->wiphy.retry_long);
711 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
712 dev->wiphy.frag_threshold);
713 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
714 dev->wiphy.rts_threshold);
715 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
716 dev->wiphy.coverage_class);
717 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
718 dev->wiphy.max_scan_ssids);
719 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
720 dev->wiphy.max_sched_scan_ssids);
721 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
722 dev->wiphy.max_scan_ie_len);
723 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
724 dev->wiphy.max_sched_scan_ie_len);
725 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
726 dev->wiphy.max_match_sets);
727
728 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
729 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
730 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
731 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
732 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
733 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
734
735 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
736 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
737
738 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
739 sizeof(u32) * dev->wiphy.n_cipher_suites,
740 dev->wiphy.cipher_suites);
741
742 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
743 dev->wiphy.max_num_pmkids);
744
745 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
746 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
747
748 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
749 dev->wiphy.available_antennas_tx);
750 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
751 dev->wiphy.available_antennas_rx);
752
753 if ((dev->wiphy.available_antennas_tx ||
754 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
755 u32 tx_ant = 0, rx_ant = 0;
756 int res;
757 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
758 if (!res) {
759 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
760 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
761 }
762 }
763
764 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
765 dev->wiphy.interface_modes))
766 goto nla_put_failure;
767
768 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
769 if (!nl_bands)
770 goto nla_put_failure;
771
772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
773 if (!dev->wiphy.bands[band])
774 continue;
775
776 nl_band = nla_nest_start(msg, band);
777 if (!nl_band)
778 goto nla_put_failure;
779
780 /* add HT info */
781 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
782 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
783 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
784 &dev->wiphy.bands[band]->ht_cap.mcs);
785 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
786 dev->wiphy.bands[band]->ht_cap.cap);
787 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
788 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
789 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
790 dev->wiphy.bands[band]->ht_cap.ampdu_density);
791 }
792
793 /* add frequencies */
794 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
795 if (!nl_freqs)
796 goto nla_put_failure;
797
798 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
799 nl_freq = nla_nest_start(msg, i);
800 if (!nl_freq)
801 goto nla_put_failure;
802
803 chan = &dev->wiphy.bands[band]->channels[i];
804
805 if (nl80211_msg_put_channel(msg, chan))
806 goto nla_put_failure;
807
808 nla_nest_end(msg, nl_freq);
809 }
810
811 nla_nest_end(msg, nl_freqs);
812
813 /* add bitrates */
814 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
815 if (!nl_rates)
816 goto nla_put_failure;
817
818 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
819 nl_rate = nla_nest_start(msg, i);
820 if (!nl_rate)
821 goto nla_put_failure;
822
823 rate = &dev->wiphy.bands[band]->bitrates[i];
824 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
825 rate->bitrate);
826 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
827 NLA_PUT_FLAG(msg,
828 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
829
830 nla_nest_end(msg, nl_rate);
831 }
832
833 nla_nest_end(msg, nl_rates);
834
835 nla_nest_end(msg, nl_band);
836 }
837 nla_nest_end(msg, nl_bands);
838
839 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
840 if (!nl_cmds)
841 goto nla_put_failure;
842
843 i = 0;
844 #define CMD(op, n) \
845 do { \
846 if (dev->ops->op) { \
847 i++; \
848 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
849 } \
850 } while (0)
851
852 CMD(add_virtual_intf, NEW_INTERFACE);
853 CMD(change_virtual_intf, SET_INTERFACE);
854 CMD(add_key, NEW_KEY);
855 CMD(add_beacon, NEW_BEACON);
856 CMD(add_station, NEW_STATION);
857 CMD(add_mpath, NEW_MPATH);
858 CMD(update_mesh_config, SET_MESH_CONFIG);
859 CMD(change_bss, SET_BSS);
860 CMD(auth, AUTHENTICATE);
861 CMD(assoc, ASSOCIATE);
862 CMD(deauth, DEAUTHENTICATE);
863 CMD(disassoc, DISASSOCIATE);
864 CMD(join_ibss, JOIN_IBSS);
865 CMD(join_mesh, JOIN_MESH);
866 CMD(set_pmksa, SET_PMKSA);
867 CMD(del_pmksa, DEL_PMKSA);
868 CMD(flush_pmksa, FLUSH_PMKSA);
869 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
870 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
871 CMD(mgmt_tx, FRAME);
872 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
873 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
874 i++;
875 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
876 }
877 CMD(set_channel, SET_CHANNEL);
878 CMD(set_wds_peer, SET_WDS_PEER);
879 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
880 CMD(sched_scan_start, START_SCHED_SCAN);
881
882 #undef CMD
883
884 if (dev->ops->connect || dev->ops->auth) {
885 i++;
886 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
887 }
888
889 if (dev->ops->disconnect || dev->ops->deauth) {
890 i++;
891 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
892 }
893
894 nla_nest_end(msg, nl_cmds);
895
896 if (dev->ops->remain_on_channel)
897 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
898 dev->wiphy.max_remain_on_channel_duration);
899
900 if (dev->ops->mgmt_tx_cancel_wait)
901 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
902
903 if (mgmt_stypes) {
904 u16 stypes;
905 struct nlattr *nl_ftypes, *nl_ifs;
906 enum nl80211_iftype ift;
907
908 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
909 if (!nl_ifs)
910 goto nla_put_failure;
911
912 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
913 nl_ftypes = nla_nest_start(msg, ift);
914 if (!nl_ftypes)
915 goto nla_put_failure;
916 i = 0;
917 stypes = mgmt_stypes[ift].tx;
918 while (stypes) {
919 if (stypes & 1)
920 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
921 (i << 4) | IEEE80211_FTYPE_MGMT);
922 stypes >>= 1;
923 i++;
924 }
925 nla_nest_end(msg, nl_ftypes);
926 }
927
928 nla_nest_end(msg, nl_ifs);
929
930 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
931 if (!nl_ifs)
932 goto nla_put_failure;
933
934 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
935 nl_ftypes = nla_nest_start(msg, ift);
936 if (!nl_ftypes)
937 goto nla_put_failure;
938 i = 0;
939 stypes = mgmt_stypes[ift].rx;
940 while (stypes) {
941 if (stypes & 1)
942 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
943 (i << 4) | IEEE80211_FTYPE_MGMT);
944 stypes >>= 1;
945 i++;
946 }
947 nla_nest_end(msg, nl_ftypes);
948 }
949 nla_nest_end(msg, nl_ifs);
950 }
951
952 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
953 struct nlattr *nl_wowlan;
954
955 nl_wowlan = nla_nest_start(msg,
956 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
957 if (!nl_wowlan)
958 goto nla_put_failure;
959
960 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
961 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
962 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
963 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
964 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
965 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
966 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
967 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
968 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
969 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
970 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
971 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
972 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
973 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
974 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
975 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
976 if (dev->wiphy.wowlan.n_patterns) {
977 struct nl80211_wowlan_pattern_support pat = {
978 .max_patterns = dev->wiphy.wowlan.n_patterns,
979 .min_pattern_len =
980 dev->wiphy.wowlan.pattern_min_len,
981 .max_pattern_len =
982 dev->wiphy.wowlan.pattern_max_len,
983 };
984 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
985 sizeof(pat), &pat);
986 }
987
988 nla_nest_end(msg, nl_wowlan);
989 }
990
991 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
992 dev->wiphy.software_iftypes))
993 goto nla_put_failure;
994
995 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
996 goto nla_put_failure;
997
998 return genlmsg_end(msg, hdr);
999
1000 nla_put_failure:
1001 genlmsg_cancel(msg, hdr);
1002 return -EMSGSIZE;
1003 }
1004
1005 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1006 {
1007 int idx = 0;
1008 int start = cb->args[0];
1009 struct cfg80211_registered_device *dev;
1010
1011 mutex_lock(&cfg80211_mutex);
1012 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1013 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1014 continue;
1015 if (++idx <= start)
1016 continue;
1017 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1018 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1019 dev) < 0) {
1020 idx--;
1021 break;
1022 }
1023 }
1024 mutex_unlock(&cfg80211_mutex);
1025
1026 cb->args[0] = idx;
1027
1028 return skb->len;
1029 }
1030
1031 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1032 {
1033 struct sk_buff *msg;
1034 struct cfg80211_registered_device *dev = info->user_ptr[0];
1035
1036 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1037 if (!msg)
1038 return -ENOMEM;
1039
1040 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1041 nlmsg_free(msg);
1042 return -ENOBUFS;
1043 }
1044
1045 return genlmsg_reply(msg, info);
1046 }
1047
1048 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1049 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1050 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1051 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1052 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1053 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1054 };
1055
1056 static int parse_txq_params(struct nlattr *tb[],
1057 struct ieee80211_txq_params *txq_params)
1058 {
1059 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1060 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1061 !tb[NL80211_TXQ_ATTR_AIFS])
1062 return -EINVAL;
1063
1064 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1065 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1066 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1067 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1068 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1069
1070 return 0;
1071 }
1072
1073 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1074 {
1075 /*
1076 * You can only set the channel explicitly for AP, mesh
1077 * and WDS type interfaces; all others have their channel
1078 * managed via their respective "establish a connection"
1079 * command (connect, join, ...)
1080 *
1081 * Monitors are special as they are normally slaved to
1082 * whatever else is going on, so they behave as though
1083 * you tried setting the wiphy channel itself.
1084 */
1085 return !wdev ||
1086 wdev->iftype == NL80211_IFTYPE_AP ||
1087 wdev->iftype == NL80211_IFTYPE_WDS ||
1088 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1089 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1090 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1091 }
1092
1093 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1094 struct wireless_dev *wdev,
1095 struct genl_info *info)
1096 {
1097 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1098 u32 freq;
1099 int result;
1100
1101 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1102 return -EINVAL;
1103
1104 if (!nl80211_can_set_dev_channel(wdev))
1105 return -EOPNOTSUPP;
1106
1107 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1108 channel_type = nla_get_u32(info->attrs[
1109 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1110 if (channel_type != NL80211_CHAN_NO_HT &&
1111 channel_type != NL80211_CHAN_HT20 &&
1112 channel_type != NL80211_CHAN_HT40PLUS &&
1113 channel_type != NL80211_CHAN_HT40MINUS)
1114 return -EINVAL;
1115 }
1116
1117 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1118
1119 mutex_lock(&rdev->devlist_mtx);
1120 if (wdev) {
1121 wdev_lock(wdev);
1122 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1123 wdev_unlock(wdev);
1124 } else {
1125 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1126 }
1127 mutex_unlock(&rdev->devlist_mtx);
1128
1129 return result;
1130 }
1131
1132 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1133 {
1134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1135 struct net_device *netdev = info->user_ptr[1];
1136
1137 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1138 }
1139
1140 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1141 {
1142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1143 struct net_device *dev = info->user_ptr[1];
1144 struct wireless_dev *wdev = dev->ieee80211_ptr;
1145 const u8 *bssid;
1146
1147 if (!info->attrs[NL80211_ATTR_MAC])
1148 return -EINVAL;
1149
1150 if (netif_running(dev))
1151 return -EBUSY;
1152
1153 if (!rdev->ops->set_wds_peer)
1154 return -EOPNOTSUPP;
1155
1156 if (wdev->iftype != NL80211_IFTYPE_WDS)
1157 return -EOPNOTSUPP;
1158
1159 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1160 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1161 }
1162
1163
1164 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1165 {
1166 struct cfg80211_registered_device *rdev;
1167 struct net_device *netdev = NULL;
1168 struct wireless_dev *wdev;
1169 int result = 0, rem_txq_params = 0;
1170 struct nlattr *nl_txq_params;
1171 u32 changed;
1172 u8 retry_short = 0, retry_long = 0;
1173 u32 frag_threshold = 0, rts_threshold = 0;
1174 u8 coverage_class = 0;
1175
1176 /*
1177 * Try to find the wiphy and netdev. Normally this
1178 * function shouldn't need the netdev, but this is
1179 * done for backward compatibility -- previously
1180 * setting the channel was done per wiphy, but now
1181 * it is per netdev. Previous userland like hostapd
1182 * also passed a netdev to set_wiphy, so that it is
1183 * possible to let that go to the right netdev!
1184 */
1185 mutex_lock(&cfg80211_mutex);
1186
1187 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1188 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1189
1190 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1191 if (netdev && netdev->ieee80211_ptr) {
1192 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1193 mutex_lock(&rdev->mtx);
1194 } else
1195 netdev = NULL;
1196 }
1197
1198 if (!netdev) {
1199 rdev = __cfg80211_rdev_from_info(info);
1200 if (IS_ERR(rdev)) {
1201 mutex_unlock(&cfg80211_mutex);
1202 return PTR_ERR(rdev);
1203 }
1204 wdev = NULL;
1205 netdev = NULL;
1206 result = 0;
1207
1208 mutex_lock(&rdev->mtx);
1209 } else if (netif_running(netdev) &&
1210 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1211 wdev = netdev->ieee80211_ptr;
1212 else
1213 wdev = NULL;
1214
1215 /*
1216 * end workaround code, by now the rdev is available
1217 * and locked, and wdev may or may not be NULL.
1218 */
1219
1220 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1221 result = cfg80211_dev_rename(
1222 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1223
1224 mutex_unlock(&cfg80211_mutex);
1225
1226 if (result)
1227 goto bad_res;
1228
1229 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1230 struct ieee80211_txq_params txq_params;
1231 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1232
1233 if (!rdev->ops->set_txq_params) {
1234 result = -EOPNOTSUPP;
1235 goto bad_res;
1236 }
1237
1238 nla_for_each_nested(nl_txq_params,
1239 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1240 rem_txq_params) {
1241 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1242 nla_data(nl_txq_params),
1243 nla_len(nl_txq_params),
1244 txq_params_policy);
1245 result = parse_txq_params(tb, &txq_params);
1246 if (result)
1247 goto bad_res;
1248
1249 result = rdev->ops->set_txq_params(&rdev->wiphy,
1250 &txq_params);
1251 if (result)
1252 goto bad_res;
1253 }
1254 }
1255
1256 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1257 result = __nl80211_set_channel(rdev, wdev, info);
1258 if (result)
1259 goto bad_res;
1260 }
1261
1262 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1263 enum nl80211_tx_power_setting type;
1264 int idx, mbm = 0;
1265
1266 if (!rdev->ops->set_tx_power) {
1267 result = -EOPNOTSUPP;
1268 goto bad_res;
1269 }
1270
1271 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1272 type = nla_get_u32(info->attrs[idx]);
1273
1274 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1275 (type != NL80211_TX_POWER_AUTOMATIC)) {
1276 result = -EINVAL;
1277 goto bad_res;
1278 }
1279
1280 if (type != NL80211_TX_POWER_AUTOMATIC) {
1281 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1282 mbm = nla_get_u32(info->attrs[idx]);
1283 }
1284
1285 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1286 if (result)
1287 goto bad_res;
1288 }
1289
1290 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1291 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1292 u32 tx_ant, rx_ant;
1293 if ((!rdev->wiphy.available_antennas_tx &&
1294 !rdev->wiphy.available_antennas_rx) ||
1295 !rdev->ops->set_antenna) {
1296 result = -EOPNOTSUPP;
1297 goto bad_res;
1298 }
1299
1300 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1301 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1302
1303 /* reject antenna configurations which don't match the
1304 * available antenna masks, except for the "all" mask */
1305 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1306 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1307 result = -EINVAL;
1308 goto bad_res;
1309 }
1310
1311 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1312 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1313
1314 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1315 if (result)
1316 goto bad_res;
1317 }
1318
1319 changed = 0;
1320
1321 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1322 retry_short = nla_get_u8(
1323 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1324 if (retry_short == 0) {
1325 result = -EINVAL;
1326 goto bad_res;
1327 }
1328 changed |= WIPHY_PARAM_RETRY_SHORT;
1329 }
1330
1331 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1332 retry_long = nla_get_u8(
1333 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1334 if (retry_long == 0) {
1335 result = -EINVAL;
1336 goto bad_res;
1337 }
1338 changed |= WIPHY_PARAM_RETRY_LONG;
1339 }
1340
1341 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1342 frag_threshold = nla_get_u32(
1343 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1344 if (frag_threshold < 256) {
1345 result = -EINVAL;
1346 goto bad_res;
1347 }
1348 if (frag_threshold != (u32) -1) {
1349 /*
1350 * Fragments (apart from the last one) are required to
1351 * have even length. Make the fragmentation code
1352 * simpler by stripping LSB should someone try to use
1353 * odd threshold value.
1354 */
1355 frag_threshold &= ~0x1;
1356 }
1357 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1358 }
1359
1360 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1361 rts_threshold = nla_get_u32(
1362 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1363 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1364 }
1365
1366 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1367 coverage_class = nla_get_u8(
1368 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1369 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1370 }
1371
1372 if (changed) {
1373 u8 old_retry_short, old_retry_long;
1374 u32 old_frag_threshold, old_rts_threshold;
1375 u8 old_coverage_class;
1376
1377 if (!rdev->ops->set_wiphy_params) {
1378 result = -EOPNOTSUPP;
1379 goto bad_res;
1380 }
1381
1382 old_retry_short = rdev->wiphy.retry_short;
1383 old_retry_long = rdev->wiphy.retry_long;
1384 old_frag_threshold = rdev->wiphy.frag_threshold;
1385 old_rts_threshold = rdev->wiphy.rts_threshold;
1386 old_coverage_class = rdev->wiphy.coverage_class;
1387
1388 if (changed & WIPHY_PARAM_RETRY_SHORT)
1389 rdev->wiphy.retry_short = retry_short;
1390 if (changed & WIPHY_PARAM_RETRY_LONG)
1391 rdev->wiphy.retry_long = retry_long;
1392 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1393 rdev->wiphy.frag_threshold = frag_threshold;
1394 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1395 rdev->wiphy.rts_threshold = rts_threshold;
1396 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1397 rdev->wiphy.coverage_class = coverage_class;
1398
1399 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1400 if (result) {
1401 rdev->wiphy.retry_short = old_retry_short;
1402 rdev->wiphy.retry_long = old_retry_long;
1403 rdev->wiphy.frag_threshold = old_frag_threshold;
1404 rdev->wiphy.rts_threshold = old_rts_threshold;
1405 rdev->wiphy.coverage_class = old_coverage_class;
1406 }
1407 }
1408
1409 bad_res:
1410 mutex_unlock(&rdev->mtx);
1411 if (netdev)
1412 dev_put(netdev);
1413 return result;
1414 }
1415
1416
1417 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1418 struct cfg80211_registered_device *rdev,
1419 struct net_device *dev)
1420 {
1421 void *hdr;
1422
1423 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1424 if (!hdr)
1425 return -1;
1426
1427 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1428 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1429 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1430 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1431
1432 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1433 rdev->devlist_generation ^
1434 (cfg80211_rdev_list_generation << 2));
1435
1436 return genlmsg_end(msg, hdr);
1437
1438 nla_put_failure:
1439 genlmsg_cancel(msg, hdr);
1440 return -EMSGSIZE;
1441 }
1442
1443 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1444 {
1445 int wp_idx = 0;
1446 int if_idx = 0;
1447 int wp_start = cb->args[0];
1448 int if_start = cb->args[1];
1449 struct cfg80211_registered_device *rdev;
1450 struct wireless_dev *wdev;
1451
1452 mutex_lock(&cfg80211_mutex);
1453 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1454 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1455 continue;
1456 if (wp_idx < wp_start) {
1457 wp_idx++;
1458 continue;
1459 }
1460 if_idx = 0;
1461
1462 mutex_lock(&rdev->devlist_mtx);
1463 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1464 if (if_idx < if_start) {
1465 if_idx++;
1466 continue;
1467 }
1468 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1469 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1470 rdev, wdev->netdev) < 0) {
1471 mutex_unlock(&rdev->devlist_mtx);
1472 goto out;
1473 }
1474 if_idx++;
1475 }
1476 mutex_unlock(&rdev->devlist_mtx);
1477
1478 wp_idx++;
1479 }
1480 out:
1481 mutex_unlock(&cfg80211_mutex);
1482
1483 cb->args[0] = wp_idx;
1484 cb->args[1] = if_idx;
1485
1486 return skb->len;
1487 }
1488
1489 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1490 {
1491 struct sk_buff *msg;
1492 struct cfg80211_registered_device *dev = info->user_ptr[0];
1493 struct net_device *netdev = info->user_ptr[1];
1494
1495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1496 if (!msg)
1497 return -ENOMEM;
1498
1499 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1500 dev, netdev) < 0) {
1501 nlmsg_free(msg);
1502 return -ENOBUFS;
1503 }
1504
1505 return genlmsg_reply(msg, info);
1506 }
1507
1508 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1509 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1510 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1511 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1512 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1513 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1514 };
1515
1516 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1517 {
1518 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1519 int flag;
1520
1521 *mntrflags = 0;
1522
1523 if (!nla)
1524 return -EINVAL;
1525
1526 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1527 nla, mntr_flags_policy))
1528 return -EINVAL;
1529
1530 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1531 if (flags[flag])
1532 *mntrflags |= (1<<flag);
1533
1534 return 0;
1535 }
1536
1537 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1538 struct net_device *netdev, u8 use_4addr,
1539 enum nl80211_iftype iftype)
1540 {
1541 if (!use_4addr) {
1542 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1543 return -EBUSY;
1544 return 0;
1545 }
1546
1547 switch (iftype) {
1548 case NL80211_IFTYPE_AP_VLAN:
1549 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1550 return 0;
1551 break;
1552 case NL80211_IFTYPE_STATION:
1553 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1554 return 0;
1555 break;
1556 default:
1557 break;
1558 }
1559
1560 return -EOPNOTSUPP;
1561 }
1562
1563 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1564 {
1565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1566 struct vif_params params;
1567 int err;
1568 enum nl80211_iftype otype, ntype;
1569 struct net_device *dev = info->user_ptr[1];
1570 u32 _flags, *flags = NULL;
1571 bool change = false;
1572
1573 memset(&params, 0, sizeof(params));
1574
1575 otype = ntype = dev->ieee80211_ptr->iftype;
1576
1577 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1578 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1579 if (otype != ntype)
1580 change = true;
1581 if (ntype > NL80211_IFTYPE_MAX)
1582 return -EINVAL;
1583 }
1584
1585 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1586 struct wireless_dev *wdev = dev->ieee80211_ptr;
1587
1588 if (ntype != NL80211_IFTYPE_MESH_POINT)
1589 return -EINVAL;
1590 if (netif_running(dev))
1591 return -EBUSY;
1592
1593 wdev_lock(wdev);
1594 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1595 IEEE80211_MAX_MESH_ID_LEN);
1596 wdev->mesh_id_up_len =
1597 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1598 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1599 wdev->mesh_id_up_len);
1600 wdev_unlock(wdev);
1601 }
1602
1603 if (info->attrs[NL80211_ATTR_4ADDR]) {
1604 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1605 change = true;
1606 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1607 if (err)
1608 return err;
1609 } else {
1610 params.use_4addr = -1;
1611 }
1612
1613 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1614 if (ntype != NL80211_IFTYPE_MONITOR)
1615 return -EINVAL;
1616 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1617 &_flags);
1618 if (err)
1619 return err;
1620
1621 flags = &_flags;
1622 change = true;
1623 }
1624
1625 if (change)
1626 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1627 else
1628 err = 0;
1629
1630 if (!err && params.use_4addr != -1)
1631 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1632
1633 return err;
1634 }
1635
1636 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1637 {
1638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1639 struct vif_params params;
1640 struct net_device *dev;
1641 int err;
1642 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1643 u32 flags;
1644
1645 memset(&params, 0, sizeof(params));
1646
1647 if (!info->attrs[NL80211_ATTR_IFNAME])
1648 return -EINVAL;
1649
1650 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1651 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1652 if (type > NL80211_IFTYPE_MAX)
1653 return -EINVAL;
1654 }
1655
1656 if (!rdev->ops->add_virtual_intf ||
1657 !(rdev->wiphy.interface_modes & (1 << type)))
1658 return -EOPNOTSUPP;
1659
1660 if (info->attrs[NL80211_ATTR_4ADDR]) {
1661 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1662 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1663 if (err)
1664 return err;
1665 }
1666
1667 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1668 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1669 &flags);
1670 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1671 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1672 type, err ? NULL : &flags, &params);
1673 if (IS_ERR(dev))
1674 return PTR_ERR(dev);
1675
1676 if (type == NL80211_IFTYPE_MESH_POINT &&
1677 info->attrs[NL80211_ATTR_MESH_ID]) {
1678 struct wireless_dev *wdev = dev->ieee80211_ptr;
1679
1680 wdev_lock(wdev);
1681 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1682 IEEE80211_MAX_MESH_ID_LEN);
1683 wdev->mesh_id_up_len =
1684 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1685 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1686 wdev->mesh_id_up_len);
1687 wdev_unlock(wdev);
1688 }
1689
1690 return 0;
1691 }
1692
1693 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1694 {
1695 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1696 struct net_device *dev = info->user_ptr[1];
1697
1698 if (!rdev->ops->del_virtual_intf)
1699 return -EOPNOTSUPP;
1700
1701 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1702 }
1703
1704 struct get_key_cookie {
1705 struct sk_buff *msg;
1706 int error;
1707 int idx;
1708 };
1709
1710 static void get_key_callback(void *c, struct key_params *params)
1711 {
1712 struct nlattr *key;
1713 struct get_key_cookie *cookie = c;
1714
1715 if (params->key)
1716 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1717 params->key_len, params->key);
1718
1719 if (params->seq)
1720 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1721 params->seq_len, params->seq);
1722
1723 if (params->cipher)
1724 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1725 params->cipher);
1726
1727 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1728 if (!key)
1729 goto nla_put_failure;
1730
1731 if (params->key)
1732 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1733 params->key_len, params->key);
1734
1735 if (params->seq)
1736 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1737 params->seq_len, params->seq);
1738
1739 if (params->cipher)
1740 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1741 params->cipher);
1742
1743 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1744
1745 nla_nest_end(cookie->msg, key);
1746
1747 return;
1748 nla_put_failure:
1749 cookie->error = 1;
1750 }
1751
1752 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1753 {
1754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1755 int err;
1756 struct net_device *dev = info->user_ptr[1];
1757 u8 key_idx = 0;
1758 const u8 *mac_addr = NULL;
1759 bool pairwise;
1760 struct get_key_cookie cookie = {
1761 .error = 0,
1762 };
1763 void *hdr;
1764 struct sk_buff *msg;
1765
1766 if (info->attrs[NL80211_ATTR_KEY_IDX])
1767 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1768
1769 if (key_idx > 5)
1770 return -EINVAL;
1771
1772 if (info->attrs[NL80211_ATTR_MAC])
1773 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1774
1775 pairwise = !!mac_addr;
1776 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1777 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1778 if (kt >= NUM_NL80211_KEYTYPES)
1779 return -EINVAL;
1780 if (kt != NL80211_KEYTYPE_GROUP &&
1781 kt != NL80211_KEYTYPE_PAIRWISE)
1782 return -EINVAL;
1783 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1784 }
1785
1786 if (!rdev->ops->get_key)
1787 return -EOPNOTSUPP;
1788
1789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1790 if (!msg)
1791 return -ENOMEM;
1792
1793 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1794 NL80211_CMD_NEW_KEY);
1795 if (IS_ERR(hdr))
1796 return PTR_ERR(hdr);
1797
1798 cookie.msg = msg;
1799 cookie.idx = key_idx;
1800
1801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1802 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1803 if (mac_addr)
1804 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1805
1806 if (pairwise && mac_addr &&
1807 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1808 return -ENOENT;
1809
1810 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1811 mac_addr, &cookie, get_key_callback);
1812
1813 if (err)
1814 goto free_msg;
1815
1816 if (cookie.error)
1817 goto nla_put_failure;
1818
1819 genlmsg_end(msg, hdr);
1820 return genlmsg_reply(msg, info);
1821
1822 nla_put_failure:
1823 err = -ENOBUFS;
1824 free_msg:
1825 nlmsg_free(msg);
1826 return err;
1827 }
1828
1829 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1830 {
1831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1832 struct key_parse key;
1833 int err;
1834 struct net_device *dev = info->user_ptr[1];
1835
1836 err = nl80211_parse_key(info, &key);
1837 if (err)
1838 return err;
1839
1840 if (key.idx < 0)
1841 return -EINVAL;
1842
1843 /* only support setting default key */
1844 if (!key.def && !key.defmgmt)
1845 return -EINVAL;
1846
1847 wdev_lock(dev->ieee80211_ptr);
1848
1849 if (key.def) {
1850 if (!rdev->ops->set_default_key) {
1851 err = -EOPNOTSUPP;
1852 goto out;
1853 }
1854
1855 err = nl80211_key_allowed(dev->ieee80211_ptr);
1856 if (err)
1857 goto out;
1858
1859 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1860 key.def_uni, key.def_multi);
1861
1862 if (err)
1863 goto out;
1864
1865 #ifdef CONFIG_CFG80211_WEXT
1866 dev->ieee80211_ptr->wext.default_key = key.idx;
1867 #endif
1868 } else {
1869 if (key.def_uni || !key.def_multi) {
1870 err = -EINVAL;
1871 goto out;
1872 }
1873
1874 if (!rdev->ops->set_default_mgmt_key) {
1875 err = -EOPNOTSUPP;
1876 goto out;
1877 }
1878
1879 err = nl80211_key_allowed(dev->ieee80211_ptr);
1880 if (err)
1881 goto out;
1882
1883 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1884 dev, key.idx);
1885 if (err)
1886 goto out;
1887
1888 #ifdef CONFIG_CFG80211_WEXT
1889 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1890 #endif
1891 }
1892
1893 out:
1894 wdev_unlock(dev->ieee80211_ptr);
1895
1896 return err;
1897 }
1898
1899 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1900 {
1901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1902 int err;
1903 struct net_device *dev = info->user_ptr[1];
1904 struct key_parse key;
1905 const u8 *mac_addr = NULL;
1906
1907 err = nl80211_parse_key(info, &key);
1908 if (err)
1909 return err;
1910
1911 if (!key.p.key)
1912 return -EINVAL;
1913
1914 if (info->attrs[NL80211_ATTR_MAC])
1915 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1916
1917 if (key.type == -1) {
1918 if (mac_addr)
1919 key.type = NL80211_KEYTYPE_PAIRWISE;
1920 else
1921 key.type = NL80211_KEYTYPE_GROUP;
1922 }
1923
1924 /* for now */
1925 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1926 key.type != NL80211_KEYTYPE_GROUP)
1927 return -EINVAL;
1928
1929 if (!rdev->ops->add_key)
1930 return -EOPNOTSUPP;
1931
1932 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1933 key.type == NL80211_KEYTYPE_PAIRWISE,
1934 mac_addr))
1935 return -EINVAL;
1936
1937 wdev_lock(dev->ieee80211_ptr);
1938 err = nl80211_key_allowed(dev->ieee80211_ptr);
1939 if (!err)
1940 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1941 key.type == NL80211_KEYTYPE_PAIRWISE,
1942 mac_addr, &key.p);
1943 wdev_unlock(dev->ieee80211_ptr);
1944
1945 return err;
1946 }
1947
1948 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1949 {
1950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1951 int err;
1952 struct net_device *dev = info->user_ptr[1];
1953 u8 *mac_addr = NULL;
1954 struct key_parse key;
1955
1956 err = nl80211_parse_key(info, &key);
1957 if (err)
1958 return err;
1959
1960 if (info->attrs[NL80211_ATTR_MAC])
1961 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1962
1963 if (key.type == -1) {
1964 if (mac_addr)
1965 key.type = NL80211_KEYTYPE_PAIRWISE;
1966 else
1967 key.type = NL80211_KEYTYPE_GROUP;
1968 }
1969
1970 /* for now */
1971 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1972 key.type != NL80211_KEYTYPE_GROUP)
1973 return -EINVAL;
1974
1975 if (!rdev->ops->del_key)
1976 return -EOPNOTSUPP;
1977
1978 wdev_lock(dev->ieee80211_ptr);
1979 err = nl80211_key_allowed(dev->ieee80211_ptr);
1980
1981 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1982 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1983 err = -ENOENT;
1984
1985 if (!err)
1986 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1987 key.type == NL80211_KEYTYPE_PAIRWISE,
1988 mac_addr);
1989
1990 #ifdef CONFIG_CFG80211_WEXT
1991 if (!err) {
1992 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1993 dev->ieee80211_ptr->wext.default_key = -1;
1994 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1995 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1996 }
1997 #endif
1998 wdev_unlock(dev->ieee80211_ptr);
1999
2000 return err;
2001 }
2002
2003 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2004 {
2005 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2006 struct beacon_parameters *info);
2007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2008 struct net_device *dev = info->user_ptr[1];
2009 struct wireless_dev *wdev = dev->ieee80211_ptr;
2010 struct beacon_parameters params;
2011 int haveinfo = 0, err;
2012
2013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2014 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2015 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2016 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2017 return -EINVAL;
2018
2019 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2020 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2021 return -EOPNOTSUPP;
2022
2023 memset(&params, 0, sizeof(params));
2024
2025 switch (info->genlhdr->cmd) {
2026 case NL80211_CMD_NEW_BEACON:
2027 /* these are required for NEW_BEACON */
2028 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2029 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2030 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2031 return -EINVAL;
2032
2033 params.interval =
2034 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2035 params.dtim_period =
2036 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2037
2038 err = cfg80211_validate_beacon_int(rdev, params.interval);
2039 if (err)
2040 return err;
2041
2042 /*
2043 * In theory, some of these attributes could be required for
2044 * NEW_BEACON, but since they were not used when the command was
2045 * originally added, keep them optional for old user space
2046 * programs to work with drivers that do not need the additional
2047 * information.
2048 */
2049 if (info->attrs[NL80211_ATTR_SSID]) {
2050 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2051 params.ssid_len =
2052 nla_len(info->attrs[NL80211_ATTR_SSID]);
2053 if (params.ssid_len == 0 ||
2054 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2055 return -EINVAL;
2056 }
2057
2058 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2059 params.hidden_ssid = nla_get_u32(
2060 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2061 if (params.hidden_ssid !=
2062 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2063 params.hidden_ssid !=
2064 NL80211_HIDDEN_SSID_ZERO_LEN &&
2065 params.hidden_ssid !=
2066 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2067 return -EINVAL;
2068 }
2069
2070 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2071
2072 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2073 params.auth_type = nla_get_u32(
2074 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2075 if (!nl80211_valid_auth_type(params.auth_type))
2076 return -EINVAL;
2077 } else
2078 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2079
2080 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2081 NL80211_MAX_NR_CIPHER_SUITES);
2082 if (err)
2083 return err;
2084
2085 call = rdev->ops->add_beacon;
2086 break;
2087 case NL80211_CMD_SET_BEACON:
2088 call = rdev->ops->set_beacon;
2089 break;
2090 default:
2091 WARN_ON(1);
2092 return -EOPNOTSUPP;
2093 }
2094
2095 if (!call)
2096 return -EOPNOTSUPP;
2097
2098 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2099 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2100 params.head_len =
2101 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2102 haveinfo = 1;
2103 }
2104
2105 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2106 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2107 params.tail_len =
2108 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2109 haveinfo = 1;
2110 }
2111
2112 if (!haveinfo)
2113 return -EINVAL;
2114
2115 if (info->attrs[NL80211_ATTR_IE]) {
2116 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2117 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2118 }
2119
2120 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2121 params.proberesp_ies =
2122 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2123 params.proberesp_ies_len =
2124 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2125 }
2126
2127 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2128 params.assocresp_ies =
2129 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2130 params.assocresp_ies_len =
2131 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2132 }
2133
2134 err = call(&rdev->wiphy, dev, &params);
2135 if (!err && params.interval)
2136 wdev->beacon_interval = params.interval;
2137 return err;
2138 }
2139
2140 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2141 {
2142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2143 struct net_device *dev = info->user_ptr[1];
2144 struct wireless_dev *wdev = dev->ieee80211_ptr;
2145 int err;
2146
2147 if (!rdev->ops->del_beacon)
2148 return -EOPNOTSUPP;
2149
2150 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2152 return -EOPNOTSUPP;
2153
2154 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2155 if (!err)
2156 wdev->beacon_interval = 0;
2157 return err;
2158 }
2159
2160 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2161 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2162 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2163 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2164 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2165 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2166 };
2167
2168 static int parse_station_flags(struct genl_info *info,
2169 struct station_parameters *params)
2170 {
2171 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2172 struct nlattr *nla;
2173 int flag;
2174
2175 /*
2176 * Try parsing the new attribute first so userspace
2177 * can specify both for older kernels.
2178 */
2179 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2180 if (nla) {
2181 struct nl80211_sta_flag_update *sta_flags;
2182
2183 sta_flags = nla_data(nla);
2184 params->sta_flags_mask = sta_flags->mask;
2185 params->sta_flags_set = sta_flags->set;
2186 if ((params->sta_flags_mask |
2187 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2188 return -EINVAL;
2189 return 0;
2190 }
2191
2192 /* if present, parse the old attribute */
2193
2194 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2195 if (!nla)
2196 return 0;
2197
2198 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2199 nla, sta_flags_policy))
2200 return -EINVAL;
2201
2202 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2203 params->sta_flags_mask &= ~1;
2204
2205 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2206 if (flags[flag])
2207 params->sta_flags_set |= (1<<flag);
2208
2209 return 0;
2210 }
2211
2212 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2213 int attr)
2214 {
2215 struct nlattr *rate;
2216 u16 bitrate;
2217
2218 rate = nla_nest_start(msg, attr);
2219 if (!rate)
2220 goto nla_put_failure;
2221
2222 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2223 bitrate = cfg80211_calculate_bitrate(info);
2224 if (bitrate > 0)
2225 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2226
2227 if (info->flags & RATE_INFO_FLAGS_MCS)
2228 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2229 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2230 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2231 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2232 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2233
2234 nla_nest_end(msg, rate);
2235 return true;
2236
2237 nla_put_failure:
2238 return false;
2239 }
2240
2241 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2242 int flags, struct net_device *dev,
2243 const u8 *mac_addr, struct station_info *sinfo)
2244 {
2245 void *hdr;
2246 struct nlattr *sinfoattr, *bss_param;
2247
2248 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2249 if (!hdr)
2250 return -1;
2251
2252 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2253 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2254
2255 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2256
2257 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2258 if (!sinfoattr)
2259 goto nla_put_failure;
2260 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2261 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2262 sinfo->connected_time);
2263 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2264 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2265 sinfo->inactive_time);
2266 if (sinfo->filled & STATION_INFO_RX_BYTES)
2267 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2268 sinfo->rx_bytes);
2269 if (sinfo->filled & STATION_INFO_TX_BYTES)
2270 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2271 sinfo->tx_bytes);
2272 if (sinfo->filled & STATION_INFO_LLID)
2273 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2274 sinfo->llid);
2275 if (sinfo->filled & STATION_INFO_PLID)
2276 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2277 sinfo->plid);
2278 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2279 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2280 sinfo->plink_state);
2281 if (sinfo->filled & STATION_INFO_SIGNAL)
2282 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2283 sinfo->signal);
2284 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2285 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2286 sinfo->signal_avg);
2287 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2288 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2289 NL80211_STA_INFO_TX_BITRATE))
2290 goto nla_put_failure;
2291 }
2292 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2293 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2294 NL80211_STA_INFO_RX_BITRATE))
2295 goto nla_put_failure;
2296 }
2297 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2298 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2299 sinfo->rx_packets);
2300 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2301 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2302 sinfo->tx_packets);
2303 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2304 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2305 sinfo->tx_retries);
2306 if (sinfo->filled & STATION_INFO_TX_FAILED)
2307 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2308 sinfo->tx_failed);
2309 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2310 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2311 if (!bss_param)
2312 goto nla_put_failure;
2313
2314 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2315 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2316 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2317 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2318 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2319 NLA_PUT_FLAG(msg,
2320 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2321 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2322 sinfo->bss_param.dtim_period);
2323 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2324 sinfo->bss_param.beacon_interval);
2325
2326 nla_nest_end(msg, bss_param);
2327 }
2328 nla_nest_end(msg, sinfoattr);
2329
2330 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2331 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2332 sinfo->assoc_req_ies);
2333
2334 return genlmsg_end(msg, hdr);
2335
2336 nla_put_failure:
2337 genlmsg_cancel(msg, hdr);
2338 return -EMSGSIZE;
2339 }
2340
2341 static int nl80211_dump_station(struct sk_buff *skb,
2342 struct netlink_callback *cb)
2343 {
2344 struct station_info sinfo;
2345 struct cfg80211_registered_device *dev;
2346 struct net_device *netdev;
2347 u8 mac_addr[ETH_ALEN];
2348 int sta_idx = cb->args[1];
2349 int err;
2350
2351 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2352 if (err)
2353 return err;
2354
2355 if (!dev->ops->dump_station) {
2356 err = -EOPNOTSUPP;
2357 goto out_err;
2358 }
2359
2360 while (1) {
2361 memset(&sinfo, 0, sizeof(sinfo));
2362 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2363 mac_addr, &sinfo);
2364 if (err == -ENOENT)
2365 break;
2366 if (err)
2367 goto out_err;
2368
2369 if (nl80211_send_station(skb,
2370 NETLINK_CB(cb->skb).pid,
2371 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2372 netdev, mac_addr,
2373 &sinfo) < 0)
2374 goto out;
2375
2376 sta_idx++;
2377 }
2378
2379
2380 out:
2381 cb->args[1] = sta_idx;
2382 err = skb->len;
2383 out_err:
2384 nl80211_finish_netdev_dump(dev);
2385
2386 return err;
2387 }
2388
2389 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2390 {
2391 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2392 struct net_device *dev = info->user_ptr[1];
2393 struct station_info sinfo;
2394 struct sk_buff *msg;
2395 u8 *mac_addr = NULL;
2396 int err;
2397
2398 memset(&sinfo, 0, sizeof(sinfo));
2399
2400 if (!info->attrs[NL80211_ATTR_MAC])
2401 return -EINVAL;
2402
2403 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2404
2405 if (!rdev->ops->get_station)
2406 return -EOPNOTSUPP;
2407
2408 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2409 if (err)
2410 return err;
2411
2412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2413 if (!msg)
2414 return -ENOMEM;
2415
2416 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2417 dev, mac_addr, &sinfo) < 0) {
2418 nlmsg_free(msg);
2419 return -ENOBUFS;
2420 }
2421
2422 return genlmsg_reply(msg, info);
2423 }
2424
2425 /*
2426 * Get vlan interface making sure it is running and on the right wiphy.
2427 */
2428 static int get_vlan(struct genl_info *info,
2429 struct cfg80211_registered_device *rdev,
2430 struct net_device **vlan)
2431 {
2432 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2433 *vlan = NULL;
2434
2435 if (vlanattr) {
2436 *vlan = dev_get_by_index(genl_info_net(info),
2437 nla_get_u32(vlanattr));
2438 if (!*vlan)
2439 return -ENODEV;
2440 if (!(*vlan)->ieee80211_ptr)
2441 return -EINVAL;
2442 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2443 return -EINVAL;
2444 if (!netif_running(*vlan))
2445 return -ENETDOWN;
2446 }
2447 return 0;
2448 }
2449
2450 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2451 {
2452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2453 int err;
2454 struct net_device *dev = info->user_ptr[1];
2455 struct station_parameters params;
2456 u8 *mac_addr = NULL;
2457
2458 memset(&params, 0, sizeof(params));
2459
2460 params.listen_interval = -1;
2461 params.plink_state = -1;
2462
2463 if (info->attrs[NL80211_ATTR_STA_AID])
2464 return -EINVAL;
2465
2466 if (!info->attrs[NL80211_ATTR_MAC])
2467 return -EINVAL;
2468
2469 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2470
2471 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2472 params.supported_rates =
2473 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2474 params.supported_rates_len =
2475 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2476 }
2477
2478 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2479 params.listen_interval =
2480 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2481
2482 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2483 params.ht_capa =
2484 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2485
2486 if (parse_station_flags(info, &params))
2487 return -EINVAL;
2488
2489 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2490 params.plink_action =
2491 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2492
2493 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2494 params.plink_state =
2495 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2496
2497 err = get_vlan(info, rdev, &params.vlan);
2498 if (err)
2499 goto out;
2500
2501 /* validate settings */
2502 err = 0;
2503
2504 switch (dev->ieee80211_ptr->iftype) {
2505 case NL80211_IFTYPE_AP:
2506 case NL80211_IFTYPE_AP_VLAN:
2507 case NL80211_IFTYPE_P2P_GO:
2508 /* disallow mesh-specific things */
2509 if (params.plink_action)
2510 err = -EINVAL;
2511 break;
2512 case NL80211_IFTYPE_P2P_CLIENT:
2513 case NL80211_IFTYPE_STATION:
2514 /* disallow everything but AUTHORIZED flag */
2515 if (params.plink_action)
2516 err = -EINVAL;
2517 if (params.vlan)
2518 err = -EINVAL;
2519 if (params.supported_rates)
2520 err = -EINVAL;
2521 if (params.ht_capa)
2522 err = -EINVAL;
2523 if (params.listen_interval >= 0)
2524 err = -EINVAL;
2525 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2526 err = -EINVAL;
2527 break;
2528 case NL80211_IFTYPE_MESH_POINT:
2529 /* disallow things mesh doesn't support */
2530 if (params.vlan)
2531 err = -EINVAL;
2532 if (params.ht_capa)
2533 err = -EINVAL;
2534 if (params.listen_interval >= 0)
2535 err = -EINVAL;
2536 if (params.sta_flags_mask &
2537 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2538 BIT(NL80211_STA_FLAG_MFP) |
2539 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2540 err = -EINVAL;
2541 break;
2542 default:
2543 err = -EINVAL;
2544 }
2545
2546 if (err)
2547 goto out;
2548
2549 if (!rdev->ops->change_station) {
2550 err = -EOPNOTSUPP;
2551 goto out;
2552 }
2553
2554 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2555
2556 out:
2557 if (params.vlan)
2558 dev_put(params.vlan);
2559
2560 return err;
2561 }
2562
2563 static struct nla_policy
2564 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2565 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2566 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2567 };
2568
2569 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2570 {
2571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2572 int err;
2573 struct net_device *dev = info->user_ptr[1];
2574 struct station_parameters params;
2575 u8 *mac_addr = NULL;
2576
2577 memset(&params, 0, sizeof(params));
2578
2579 if (!info->attrs[NL80211_ATTR_MAC])
2580 return -EINVAL;
2581
2582 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2583 return -EINVAL;
2584
2585 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2586 return -EINVAL;
2587
2588 if (!info->attrs[NL80211_ATTR_STA_AID])
2589 return -EINVAL;
2590
2591 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2592 params.supported_rates =
2593 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2594 params.supported_rates_len =
2595 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2596 params.listen_interval =
2597 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2598
2599 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2600 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2601 return -EINVAL;
2602
2603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2604 params.ht_capa =
2605 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2606
2607 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2608 params.plink_action =
2609 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2610
2611 if (parse_station_flags(info, &params))
2612 return -EINVAL;
2613
2614 /* parse WME attributes if sta is WME capable */
2615 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2616 (params.sta_flags_set & NL80211_STA_FLAG_WME) &&
2617 info->attrs[NL80211_ATTR_STA_WME]) {
2618 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2619 struct nlattr *nla;
2620
2621 nla = info->attrs[NL80211_ATTR_STA_WME];
2622 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2623 nl80211_sta_wme_policy);
2624 if (err)
2625 return err;
2626
2627 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2628 params.uapsd_queues =
2629 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2630 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2631 return -EINVAL;
2632
2633 if (tb[NL80211_STA_WME_MAX_SP])
2634 params.max_sp =
2635 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2636
2637 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2638 return -EINVAL;
2639 }
2640
2641 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2642 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2643 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2644 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2645 return -EINVAL;
2646
2647 err = get_vlan(info, rdev, &params.vlan);
2648 if (err)
2649 goto out;
2650
2651 /* validate settings */
2652 err = 0;
2653
2654 if (!rdev->ops->add_station) {
2655 err = -EOPNOTSUPP;
2656 goto out;
2657 }
2658
2659 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2660
2661 out:
2662 if (params.vlan)
2663 dev_put(params.vlan);
2664 return err;
2665 }
2666
2667 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2668 {
2669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2670 struct net_device *dev = info->user_ptr[1];
2671 u8 *mac_addr = NULL;
2672
2673 if (info->attrs[NL80211_ATTR_MAC])
2674 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2675
2676 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2677 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2678 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2679 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2680 return -EINVAL;
2681
2682 if (!rdev->ops->del_station)
2683 return -EOPNOTSUPP;
2684
2685 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2686 }
2687
2688 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2689 int flags, struct net_device *dev,
2690 u8 *dst, u8 *next_hop,
2691 struct mpath_info *pinfo)
2692 {
2693 void *hdr;
2694 struct nlattr *pinfoattr;
2695
2696 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2697 if (!hdr)
2698 return -1;
2699
2700 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2701 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2702 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2703
2704 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2705
2706 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2707 if (!pinfoattr)
2708 goto nla_put_failure;
2709 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2710 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2711 pinfo->frame_qlen);
2712 if (pinfo->filled & MPATH_INFO_SN)
2713 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2714 pinfo->sn);
2715 if (pinfo->filled & MPATH_INFO_METRIC)
2716 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2717 pinfo->metric);
2718 if (pinfo->filled & MPATH_INFO_EXPTIME)
2719 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2720 pinfo->exptime);
2721 if (pinfo->filled & MPATH_INFO_FLAGS)
2722 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2723 pinfo->flags);
2724 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2725 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2726 pinfo->discovery_timeout);
2727 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2728 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2729 pinfo->discovery_retries);
2730
2731 nla_nest_end(msg, pinfoattr);
2732
2733 return genlmsg_end(msg, hdr);
2734
2735 nla_put_failure:
2736 genlmsg_cancel(msg, hdr);
2737 return -EMSGSIZE;
2738 }
2739
2740 static int nl80211_dump_mpath(struct sk_buff *skb,
2741 struct netlink_callback *cb)
2742 {
2743 struct mpath_info pinfo;
2744 struct cfg80211_registered_device *dev;
2745 struct net_device *netdev;
2746 u8 dst[ETH_ALEN];
2747 u8 next_hop[ETH_ALEN];
2748 int path_idx = cb->args[1];
2749 int err;
2750
2751 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2752 if (err)
2753 return err;
2754
2755 if (!dev->ops->dump_mpath) {
2756 err = -EOPNOTSUPP;
2757 goto out_err;
2758 }
2759
2760 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2761 err = -EOPNOTSUPP;
2762 goto out_err;
2763 }
2764
2765 while (1) {
2766 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2767 dst, next_hop, &pinfo);
2768 if (err == -ENOENT)
2769 break;
2770 if (err)
2771 goto out_err;
2772
2773 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2774 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2775 netdev, dst, next_hop,
2776 &pinfo) < 0)
2777 goto out;
2778
2779 path_idx++;
2780 }
2781
2782
2783 out:
2784 cb->args[1] = path_idx;
2785 err = skb->len;
2786 out_err:
2787 nl80211_finish_netdev_dump(dev);
2788 return err;
2789 }
2790
2791 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2792 {
2793 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2794 int err;
2795 struct net_device *dev = info->user_ptr[1];
2796 struct mpath_info pinfo;
2797 struct sk_buff *msg;
2798 u8 *dst = NULL;
2799 u8 next_hop[ETH_ALEN];
2800
2801 memset(&pinfo, 0, sizeof(pinfo));
2802
2803 if (!info->attrs[NL80211_ATTR_MAC])
2804 return -EINVAL;
2805
2806 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2807
2808 if (!rdev->ops->get_mpath)
2809 return -EOPNOTSUPP;
2810
2811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2812 return -EOPNOTSUPP;
2813
2814 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2815 if (err)
2816 return err;
2817
2818 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2819 if (!msg)
2820 return -ENOMEM;
2821
2822 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2823 dev, dst, next_hop, &pinfo) < 0) {
2824 nlmsg_free(msg);
2825 return -ENOBUFS;
2826 }
2827
2828 return genlmsg_reply(msg, info);
2829 }
2830
2831 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2832 {
2833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2834 struct net_device *dev = info->user_ptr[1];
2835 u8 *dst = NULL;
2836 u8 *next_hop = NULL;
2837
2838 if (!info->attrs[NL80211_ATTR_MAC])
2839 return -EINVAL;
2840
2841 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2842 return -EINVAL;
2843
2844 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2845 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2846
2847 if (!rdev->ops->change_mpath)
2848 return -EOPNOTSUPP;
2849
2850 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2851 return -EOPNOTSUPP;
2852
2853 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2854 }
2855
2856 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2857 {
2858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2859 struct net_device *dev = info->user_ptr[1];
2860 u8 *dst = NULL;
2861 u8 *next_hop = NULL;
2862
2863 if (!info->attrs[NL80211_ATTR_MAC])
2864 return -EINVAL;
2865
2866 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2867 return -EINVAL;
2868
2869 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2870 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2871
2872 if (!rdev->ops->add_mpath)
2873 return -EOPNOTSUPP;
2874
2875 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2876 return -EOPNOTSUPP;
2877
2878 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2879 }
2880
2881 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2882 {
2883 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2884 struct net_device *dev = info->user_ptr[1];
2885 u8 *dst = NULL;
2886
2887 if (info->attrs[NL80211_ATTR_MAC])
2888 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2889
2890 if (!rdev->ops->del_mpath)
2891 return -EOPNOTSUPP;
2892
2893 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2894 }
2895
2896 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2897 {
2898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2899 struct net_device *dev = info->user_ptr[1];
2900 struct bss_parameters params;
2901
2902 memset(&params, 0, sizeof(params));
2903 /* default to not changing parameters */
2904 params.use_cts_prot = -1;
2905 params.use_short_preamble = -1;
2906 params.use_short_slot_time = -1;
2907 params.ap_isolate = -1;
2908 params.ht_opmode = -1;
2909
2910 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2911 params.use_cts_prot =
2912 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2913 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2914 params.use_short_preamble =
2915 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2916 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2917 params.use_short_slot_time =
2918 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2919 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2920 params.basic_rates =
2921 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2922 params.basic_rates_len =
2923 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2924 }
2925 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2926 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2927 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2928 params.ht_opmode =
2929 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2930
2931 if (!rdev->ops->change_bss)
2932 return -EOPNOTSUPP;
2933
2934 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2935 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2936 return -EOPNOTSUPP;
2937
2938 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2939 }
2940
2941 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2942 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2943 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2944 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2945 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2946 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2947 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2948 };
2949
2950 static int parse_reg_rule(struct nlattr *tb[],
2951 struct ieee80211_reg_rule *reg_rule)
2952 {
2953 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2954 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2955
2956 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2957 return -EINVAL;
2958 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2959 return -EINVAL;
2960 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2961 return -EINVAL;
2962 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2963 return -EINVAL;
2964 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2965 return -EINVAL;
2966
2967 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2968
2969 freq_range->start_freq_khz =
2970 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2971 freq_range->end_freq_khz =
2972 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2973 freq_range->max_bandwidth_khz =
2974 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2975
2976 power_rule->max_eirp =
2977 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2978
2979 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2980 power_rule->max_antenna_gain =
2981 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2982
2983 return 0;
2984 }
2985
2986 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2987 {
2988 int r;
2989 char *data = NULL;
2990
2991 /*
2992 * You should only get this when cfg80211 hasn't yet initialized
2993 * completely when built-in to the kernel right between the time
2994 * window between nl80211_init() and regulatory_init(), if that is
2995 * even possible.
2996 */
2997 mutex_lock(&cfg80211_mutex);
2998 if (unlikely(!cfg80211_regdomain)) {
2999 mutex_unlock(&cfg80211_mutex);
3000 return -EINPROGRESS;
3001 }
3002 mutex_unlock(&cfg80211_mutex);
3003
3004 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3005 return -EINVAL;
3006
3007 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3008
3009 r = regulatory_hint_user(data);
3010
3011 return r;
3012 }
3013
3014 static int nl80211_get_mesh_config(struct sk_buff *skb,
3015 struct genl_info *info)
3016 {
3017 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3018 struct net_device *dev = info->user_ptr[1];
3019 struct wireless_dev *wdev = dev->ieee80211_ptr;
3020 struct mesh_config cur_params;
3021 int err = 0;
3022 void *hdr;
3023 struct nlattr *pinfoattr;
3024 struct sk_buff *msg;
3025
3026 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3027 return -EOPNOTSUPP;
3028
3029 if (!rdev->ops->get_mesh_config)
3030 return -EOPNOTSUPP;
3031
3032 wdev_lock(wdev);
3033 /* If not connected, get default parameters */
3034 if (!wdev->mesh_id_len)
3035 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3036 else
3037 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3038 &cur_params);
3039 wdev_unlock(wdev);
3040
3041 if (err)
3042 return err;
3043
3044 /* Draw up a netlink message to send back */
3045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3046 if (!msg)
3047 return -ENOMEM;
3048 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3049 NL80211_CMD_GET_MESH_CONFIG);
3050 if (!hdr)
3051 goto out;
3052 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3053 if (!pinfoattr)
3054 goto nla_put_failure;
3055 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3056 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3057 cur_params.dot11MeshRetryTimeout);
3058 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3059 cur_params.dot11MeshConfirmTimeout);
3060 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3061 cur_params.dot11MeshHoldingTimeout);
3062 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3063 cur_params.dot11MeshMaxPeerLinks);
3064 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3065 cur_params.dot11MeshMaxRetries);
3066 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3067 cur_params.dot11MeshTTL);
3068 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3069 cur_params.element_ttl);
3070 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3071 cur_params.auto_open_plinks);
3072 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3073 cur_params.dot11MeshHWMPmaxPREQretries);
3074 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3075 cur_params.path_refresh_time);
3076 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3077 cur_params.min_discovery_timeout);
3078 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3079 cur_params.dot11MeshHWMPactivePathTimeout);
3080 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3081 cur_params.dot11MeshHWMPpreqMinInterval);
3082 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3083 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3084 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3085 cur_params.dot11MeshHWMPRootMode);
3086 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3087 cur_params.dot11MeshHWMPRannInterval);
3088 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3089 cur_params.dot11MeshGateAnnouncementProtocol);
3090 nla_nest_end(msg, pinfoattr);
3091 genlmsg_end(msg, hdr);
3092 return genlmsg_reply(msg, info);
3093
3094 nla_put_failure:
3095 genlmsg_cancel(msg, hdr);
3096 out:
3097 nlmsg_free(msg);
3098 return -ENOBUFS;
3099 }
3100
3101 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3102 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3103 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3104 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3105 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3106 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3107 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3108 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3109 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3110
3111 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3112 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3113 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3114 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3115 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3116 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3117 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3118 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3119 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3120 };
3121
3122 static const struct nla_policy
3123 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3124 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3125 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3126 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3127 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3128 .len = IEEE80211_MAX_DATA_LEN },
3129 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3130 };
3131
3132 static int nl80211_parse_mesh_config(struct genl_info *info,
3133 struct mesh_config *cfg,
3134 u32 *mask_out)
3135 {
3136 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3137 u32 mask = 0;
3138
3139 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3140 do {\
3141 if (table[attr_num]) {\
3142 cfg->param = nla_fn(table[attr_num]); \
3143 mask |= (1 << (attr_num - 1)); \
3144 } \
3145 } while (0);\
3146
3147
3148 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3149 return -EINVAL;
3150 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3151 info->attrs[NL80211_ATTR_MESH_CONFIG],
3152 nl80211_meshconf_params_policy))
3153 return -EINVAL;
3154
3155 /* This makes sure that there aren't more than 32 mesh config
3156 * parameters (otherwise our bitfield scheme would not work.) */
3157 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3158
3159 /* Fill in the params struct */
3160 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3161 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3162 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3163 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3164 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3165 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3167 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3169 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3171 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3172 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3173 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3174 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3175 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3177 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3178 nla_get_u8);
3179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3180 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3182 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3183 nla_get_u16);
3184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3185 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3186 nla_get_u32);
3187 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3188 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3189 nla_get_u16);
3190 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3191 dot11MeshHWMPnetDiameterTraversalTime,
3192 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3193 nla_get_u16);
3194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3195 dot11MeshHWMPRootMode, mask,
3196 NL80211_MESHCONF_HWMP_ROOTMODE,
3197 nla_get_u8);
3198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3199 dot11MeshHWMPRannInterval, mask,
3200 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3201 nla_get_u16);
3202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3203 dot11MeshGateAnnouncementProtocol, mask,
3204 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3205 nla_get_u8);
3206 if (mask_out)
3207 *mask_out = mask;
3208
3209 return 0;
3210
3211 #undef FILL_IN_MESH_PARAM_IF_SET
3212 }
3213
3214 static int nl80211_parse_mesh_setup(struct genl_info *info,
3215 struct mesh_setup *setup)
3216 {
3217 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3218
3219 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3220 return -EINVAL;
3221 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3222 info->attrs[NL80211_ATTR_MESH_SETUP],
3223 nl80211_mesh_setup_params_policy))
3224 return -EINVAL;
3225
3226 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3227 setup->path_sel_proto =
3228 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3229 IEEE80211_PATH_PROTOCOL_VENDOR :
3230 IEEE80211_PATH_PROTOCOL_HWMP;
3231
3232 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3233 setup->path_metric =
3234 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3235 IEEE80211_PATH_METRIC_VENDOR :
3236 IEEE80211_PATH_METRIC_AIRTIME;
3237
3238
3239 if (tb[NL80211_MESH_SETUP_IE]) {
3240 struct nlattr *ieattr =
3241 tb[NL80211_MESH_SETUP_IE];
3242 if (!is_valid_ie_attr(ieattr))
3243 return -EINVAL;
3244 setup->ie = nla_data(ieattr);
3245 setup->ie_len = nla_len(ieattr);
3246 }
3247 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3248 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3249
3250 return 0;
3251 }
3252
3253 static int nl80211_update_mesh_config(struct sk_buff *skb,
3254 struct genl_info *info)
3255 {
3256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3257 struct net_device *dev = info->user_ptr[1];
3258 struct wireless_dev *wdev = dev->ieee80211_ptr;
3259 struct mesh_config cfg;
3260 u32 mask;
3261 int err;
3262
3263 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3264 return -EOPNOTSUPP;
3265
3266 if (!rdev->ops->update_mesh_config)
3267 return -EOPNOTSUPP;
3268
3269 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3270 if (err)
3271 return err;
3272
3273 wdev_lock(wdev);
3274 if (!wdev->mesh_id_len)
3275 err = -ENOLINK;
3276
3277 if (!err)
3278 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3279 mask, &cfg);
3280
3281 wdev_unlock(wdev);
3282
3283 return err;
3284 }
3285
3286 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3287 {
3288 struct sk_buff *msg;
3289 void *hdr = NULL;
3290 struct nlattr *nl_reg_rules;
3291 unsigned int i;
3292 int err = -EINVAL;
3293
3294 mutex_lock(&cfg80211_mutex);
3295
3296 if (!cfg80211_regdomain)
3297 goto out;
3298
3299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3300 if (!msg) {
3301 err = -ENOBUFS;
3302 goto out;
3303 }
3304
3305 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3306 NL80211_CMD_GET_REG);
3307 if (!hdr)
3308 goto put_failure;
3309
3310 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3311 cfg80211_regdomain->alpha2);
3312
3313 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3314 if (!nl_reg_rules)
3315 goto nla_put_failure;
3316
3317 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3318 struct nlattr *nl_reg_rule;
3319 const struct ieee80211_reg_rule *reg_rule;
3320 const struct ieee80211_freq_range *freq_range;
3321 const struct ieee80211_power_rule *power_rule;
3322
3323 reg_rule = &cfg80211_regdomain->reg_rules[i];
3324 freq_range = &reg_rule->freq_range;
3325 power_rule = &reg_rule->power_rule;
3326
3327 nl_reg_rule = nla_nest_start(msg, i);
3328 if (!nl_reg_rule)
3329 goto nla_put_failure;
3330
3331 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3332 reg_rule->flags);
3333 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3334 freq_range->start_freq_khz);
3335 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3336 freq_range->end_freq_khz);
3337 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3338 freq_range->max_bandwidth_khz);
3339 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3340 power_rule->max_antenna_gain);
3341 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3342 power_rule->max_eirp);
3343
3344 nla_nest_end(msg, nl_reg_rule);
3345 }
3346
3347 nla_nest_end(msg, nl_reg_rules);
3348
3349 genlmsg_end(msg, hdr);
3350 err = genlmsg_reply(msg, info);
3351 goto out;
3352
3353 nla_put_failure:
3354 genlmsg_cancel(msg, hdr);
3355 put_failure:
3356 nlmsg_free(msg);
3357 err = -EMSGSIZE;
3358 out:
3359 mutex_unlock(&cfg80211_mutex);
3360 return err;
3361 }
3362
3363 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3364 {
3365 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3366 struct nlattr *nl_reg_rule;
3367 char *alpha2 = NULL;
3368 int rem_reg_rules = 0, r = 0;
3369 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3370 struct ieee80211_regdomain *rd = NULL;
3371
3372 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3373 return -EINVAL;
3374
3375 if (!info->attrs[NL80211_ATTR_REG_RULES])
3376 return -EINVAL;
3377
3378 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3379
3380 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3381 rem_reg_rules) {
3382 num_rules++;
3383 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3384 return -EINVAL;
3385 }
3386
3387 mutex_lock(&cfg80211_mutex);
3388
3389 if (!reg_is_valid_request(alpha2)) {
3390 r = -EINVAL;
3391 goto bad_reg;
3392 }
3393
3394 size_of_regd = sizeof(struct ieee80211_regdomain) +
3395 (num_rules * sizeof(struct ieee80211_reg_rule));
3396
3397 rd = kzalloc(size_of_regd, GFP_KERNEL);
3398 if (!rd) {
3399 r = -ENOMEM;
3400 goto bad_reg;
3401 }
3402
3403 rd->n_reg_rules = num_rules;
3404 rd->alpha2[0] = alpha2[0];
3405 rd->alpha2[1] = alpha2[1];
3406
3407 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3408 rem_reg_rules) {
3409 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3410 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3411 reg_rule_policy);
3412 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3413 if (r)
3414 goto bad_reg;
3415
3416 rule_idx++;
3417
3418 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3419 r = -EINVAL;
3420 goto bad_reg;
3421 }
3422 }
3423
3424 BUG_ON(rule_idx != num_rules);
3425
3426 r = set_regdom(rd);
3427
3428 mutex_unlock(&cfg80211_mutex);
3429
3430 return r;
3431
3432 bad_reg:
3433 mutex_unlock(&cfg80211_mutex);
3434 kfree(rd);
3435 return r;
3436 }
3437
3438 static int validate_scan_freqs(struct nlattr *freqs)
3439 {
3440 struct nlattr *attr1, *attr2;
3441 int n_channels = 0, tmp1, tmp2;
3442
3443 nla_for_each_nested(attr1, freqs, tmp1) {
3444 n_channels++;
3445 /*
3446 * Some hardware has a limited channel list for
3447 * scanning, and it is pretty much nonsensical
3448 * to scan for a channel twice, so disallow that
3449 * and don't require drivers to check that the
3450 * channel list they get isn't longer than what
3451 * they can scan, as long as they can scan all
3452 * the channels they registered at once.
3453 */
3454 nla_for_each_nested(attr2, freqs, tmp2)
3455 if (attr1 != attr2 &&
3456 nla_get_u32(attr1) == nla_get_u32(attr2))
3457 return 0;
3458 }
3459
3460 return n_channels;
3461 }
3462
3463 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3464 {
3465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466 struct net_device *dev = info->user_ptr[1];
3467 struct cfg80211_scan_request *request;
3468 struct nlattr *attr;
3469 struct wiphy *wiphy;
3470 int err, tmp, n_ssids = 0, n_channels, i;
3471 size_t ie_len;
3472
3473 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3474 return -EINVAL;
3475
3476 wiphy = &rdev->wiphy;
3477
3478 if (!rdev->ops->scan)
3479 return -EOPNOTSUPP;
3480
3481 if (rdev->scan_req)
3482 return -EBUSY;
3483
3484 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3485 n_channels = validate_scan_freqs(
3486 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3487 if (!n_channels)
3488 return -EINVAL;
3489 } else {
3490 enum ieee80211_band band;
3491 n_channels = 0;
3492
3493 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3494 if (wiphy->bands[band])
3495 n_channels += wiphy->bands[band]->n_channels;
3496 }
3497
3498 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3499 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3500 n_ssids++;
3501
3502 if (n_ssids > wiphy->max_scan_ssids)
3503 return -EINVAL;
3504
3505 if (info->attrs[NL80211_ATTR_IE])
3506 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3507 else
3508 ie_len = 0;
3509
3510 if (ie_len > wiphy->max_scan_ie_len)
3511 return -EINVAL;
3512
3513 request = kzalloc(sizeof(*request)
3514 + sizeof(*request->ssids) * n_ssids
3515 + sizeof(*request->channels) * n_channels
3516 + ie_len, GFP_KERNEL);
3517 if (!request)
3518 return -ENOMEM;
3519
3520 if (n_ssids)
3521 request->ssids = (void *)&request->channels[n_channels];
3522 request->n_ssids = n_ssids;
3523 if (ie_len) {
3524 if (request->ssids)
3525 request->ie = (void *)(request->ssids + n_ssids);
3526 else
3527 request->ie = (void *)(request->channels + n_channels);
3528 }
3529
3530 i = 0;
3531 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3532 /* user specified, bail out if channel not found */
3533 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3534 struct ieee80211_channel *chan;
3535
3536 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3537
3538 if (!chan) {
3539 err = -EINVAL;
3540 goto out_free;
3541 }
3542
3543 /* ignore disabled channels */
3544 if (chan->flags & IEEE80211_CHAN_DISABLED)
3545 continue;
3546
3547 request->channels[i] = chan;
3548 i++;
3549 }
3550 } else {
3551 enum ieee80211_band band;
3552
3553 /* all channels */
3554 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3555 int j;
3556 if (!wiphy->bands[band])
3557 continue;
3558 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3559 struct ieee80211_channel *chan;
3560
3561 chan = &wiphy->bands[band]->channels[j];
3562
3563 if (chan->flags & IEEE80211_CHAN_DISABLED)
3564 continue;
3565
3566 request->channels[i] = chan;
3567 i++;
3568 }
3569 }
3570 }
3571
3572 if (!i) {
3573 err = -EINVAL;
3574 goto out_free;
3575 }
3576
3577 request->n_channels = i;
3578
3579 i = 0;
3580 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3581 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3582 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3583 err = -EINVAL;
3584 goto out_free;
3585 }
3586 request->ssids[i].ssid_len = nla_len(attr);
3587 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3588 i++;
3589 }
3590 }
3591
3592 if (info->attrs[NL80211_ATTR_IE]) {
3593 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3594 memcpy((void *)request->ie,
3595 nla_data(info->attrs[NL80211_ATTR_IE]),
3596 request->ie_len);
3597 }
3598
3599 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3600 if (wiphy->bands[i])
3601 request->rates[i] =
3602 (1 << wiphy->bands[i]->n_bitrates) - 1;
3603
3604 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3605 nla_for_each_nested(attr,
3606 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3607 tmp) {
3608 enum ieee80211_band band = nla_type(attr);
3609
3610 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3611 err = -EINVAL;
3612 goto out_free;
3613 }
3614 err = ieee80211_get_ratemask(wiphy->bands[band],
3615 nla_data(attr),
3616 nla_len(attr),
3617 &request->rates[band]);
3618 if (err)
3619 goto out_free;
3620 }
3621 }
3622
3623 request->dev = dev;
3624 request->wiphy = &rdev->wiphy;
3625
3626 rdev->scan_req = request;
3627 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3628
3629 if (!err) {
3630 nl80211_send_scan_start(rdev, dev);
3631 dev_hold(dev);
3632 } else {
3633 out_free:
3634 rdev->scan_req = NULL;
3635 kfree(request);
3636 }
3637
3638 return err;
3639 }
3640
3641 static int nl80211_start_sched_scan(struct sk_buff *skb,
3642 struct genl_info *info)
3643 {
3644 struct cfg80211_sched_scan_request *request;
3645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3646 struct net_device *dev = info->user_ptr[1];
3647 struct nlattr *attr;
3648 struct wiphy *wiphy;
3649 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3650 u32 interval;
3651 enum ieee80211_band band;
3652 size_t ie_len;
3653 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3654
3655 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3656 !rdev->ops->sched_scan_start)
3657 return -EOPNOTSUPP;
3658
3659 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3660 return -EINVAL;
3661
3662 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3663 return -EINVAL;
3664
3665 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3666 if (interval == 0)
3667 return -EINVAL;
3668
3669 wiphy = &rdev->wiphy;
3670
3671 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3672 n_channels = validate_scan_freqs(
3673 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3674 if (!n_channels)
3675 return -EINVAL;
3676 } else {
3677 n_channels = 0;
3678
3679 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3680 if (wiphy->bands[band])
3681 n_channels += wiphy->bands[band]->n_channels;
3682 }
3683
3684 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3685 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3686 tmp)
3687 n_ssids++;
3688
3689 if (n_ssids > wiphy->max_sched_scan_ssids)
3690 return -EINVAL;
3691
3692 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3693 nla_for_each_nested(attr,
3694 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3695 tmp)
3696 n_match_sets++;
3697
3698 if (n_match_sets > wiphy->max_match_sets)
3699 return -EINVAL;
3700
3701 if (info->attrs[NL80211_ATTR_IE])
3702 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3703 else
3704 ie_len = 0;
3705
3706 if (ie_len > wiphy->max_sched_scan_ie_len)
3707 return -EINVAL;
3708
3709 mutex_lock(&rdev->sched_scan_mtx);
3710
3711 if (rdev->sched_scan_req) {
3712 err = -EINPROGRESS;
3713 goto out;
3714 }
3715
3716 request = kzalloc(sizeof(*request)
3717 + sizeof(*request->ssids) * n_ssids
3718 + sizeof(*request->match_sets) * n_match_sets
3719 + sizeof(*request->channels) * n_channels
3720 + ie_len, GFP_KERNEL);
3721 if (!request) {
3722 err = -ENOMEM;
3723 goto out;
3724 }
3725
3726 if (n_ssids)
3727 request->ssids = (void *)&request->channels[n_channels];
3728 request->n_ssids = n_ssids;
3729 if (ie_len) {
3730 if (request->ssids)
3731 request->ie = (void *)(request->ssids + n_ssids);
3732 else
3733 request->ie = (void *)(request->channels + n_channels);
3734 }
3735
3736 if (n_match_sets) {
3737 if (request->ie)
3738 request->match_sets = (void *)(request->ie + ie_len);
3739 else if (request->ssids)
3740 request->match_sets =
3741 (void *)(request->ssids + n_ssids);
3742 else
3743 request->match_sets =
3744 (void *)(request->channels + n_channels);
3745 }
3746 request->n_match_sets = n_match_sets;
3747
3748 i = 0;
3749 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3750 /* user specified, bail out if channel not found */
3751 nla_for_each_nested(attr,
3752 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3753 tmp) {
3754 struct ieee80211_channel *chan;
3755
3756 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3757
3758 if (!chan) {
3759 err = -EINVAL;
3760 goto out_free;
3761 }
3762
3763 /* ignore disabled channels */
3764 if (chan->flags & IEEE80211_CHAN_DISABLED)
3765 continue;
3766
3767 request->channels[i] = chan;
3768 i++;
3769 }
3770 } else {
3771 /* all channels */
3772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3773 int j;
3774 if (!wiphy->bands[band])
3775 continue;
3776 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3777 struct ieee80211_channel *chan;
3778
3779 chan = &wiphy->bands[band]->channels[j];
3780
3781 if (chan->flags & IEEE80211_CHAN_DISABLED)
3782 continue;
3783
3784 request->channels[i] = chan;
3785 i++;
3786 }
3787 }
3788 }
3789
3790 if (!i) {
3791 err = -EINVAL;
3792 goto out_free;
3793 }
3794
3795 request->n_channels = i;
3796
3797 i = 0;
3798 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3799 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3800 tmp) {
3801 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3802 err = -EINVAL;
3803 goto out_free;
3804 }
3805 request->ssids[i].ssid_len = nla_len(attr);
3806 memcpy(request->ssids[i].ssid, nla_data(attr),
3807 nla_len(attr));
3808 i++;
3809 }
3810 }
3811
3812 i = 0;
3813 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3814 nla_for_each_nested(attr,
3815 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3816 tmp) {
3817 struct nlattr *ssid;
3818
3819 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3820 nla_data(attr), nla_len(attr),
3821 nl80211_match_policy);
3822 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3823 if (ssid) {
3824 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3825 err = -EINVAL;
3826 goto out_free;
3827 }
3828 memcpy(request->match_sets[i].ssid.ssid,
3829 nla_data(ssid), nla_len(ssid));
3830 request->match_sets[i].ssid.ssid_len =
3831 nla_len(ssid);
3832 }
3833 i++;
3834 }
3835 }
3836
3837 if (info->attrs[NL80211_ATTR_IE]) {
3838 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3839 memcpy((void *)request->ie,
3840 nla_data(info->attrs[NL80211_ATTR_IE]),
3841 request->ie_len);
3842 }
3843
3844 request->dev = dev;
3845 request->wiphy = &rdev->wiphy;
3846 request->interval = interval;
3847
3848 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3849 if (!err) {
3850 rdev->sched_scan_req = request;
3851 nl80211_send_sched_scan(rdev, dev,
3852 NL80211_CMD_START_SCHED_SCAN);
3853 goto out;
3854 }
3855
3856 out_free:
3857 kfree(request);
3858 out:
3859 mutex_unlock(&rdev->sched_scan_mtx);
3860 return err;
3861 }
3862
3863 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3864 struct genl_info *info)
3865 {
3866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3867 int err;
3868
3869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3870 !rdev->ops->sched_scan_stop)
3871 return -EOPNOTSUPP;
3872
3873 mutex_lock(&rdev->sched_scan_mtx);
3874 err = __cfg80211_stop_sched_scan(rdev, false);
3875 mutex_unlock(&rdev->sched_scan_mtx);
3876
3877 return err;
3878 }
3879
3880 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3881 u32 seq, int flags,
3882 struct cfg80211_registered_device *rdev,
3883 struct wireless_dev *wdev,
3884 struct cfg80211_internal_bss *intbss)
3885 {
3886 struct cfg80211_bss *res = &intbss->pub;
3887 void *hdr;
3888 struct nlattr *bss;
3889 int i;
3890
3891 ASSERT_WDEV_LOCK(wdev);
3892
3893 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3894 NL80211_CMD_NEW_SCAN_RESULTS);
3895 if (!hdr)
3896 return -1;
3897
3898 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3899
3900 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3901 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3902
3903 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3904 if (!bss)
3905 goto nla_put_failure;
3906 if (!is_zero_ether_addr(res->bssid))
3907 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3908 if (res->information_elements && res->len_information_elements)
3909 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3910 res->len_information_elements,
3911 res->information_elements);
3912 if (res->beacon_ies && res->len_beacon_ies &&
3913 res->beacon_ies != res->information_elements)
3914 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3915 res->len_beacon_ies, res->beacon_ies);
3916 if (res->tsf)
3917 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3918 if (res->beacon_interval)
3919 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3920 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3921 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3922 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3923 jiffies_to_msecs(jiffies - intbss->ts));
3924
3925 switch (rdev->wiphy.signal_type) {
3926 case CFG80211_SIGNAL_TYPE_MBM:
3927 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3928 break;
3929 case CFG80211_SIGNAL_TYPE_UNSPEC:
3930 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3931 break;
3932 default:
3933 break;
3934 }
3935
3936 switch (wdev->iftype) {
3937 case NL80211_IFTYPE_P2P_CLIENT:
3938 case NL80211_IFTYPE_STATION:
3939 if (intbss == wdev->current_bss)
3940 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3941 NL80211_BSS_STATUS_ASSOCIATED);
3942 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3943 if (intbss != wdev->auth_bsses[i])
3944 continue;
3945 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3946 NL80211_BSS_STATUS_AUTHENTICATED);
3947 break;
3948 }
3949 break;
3950 case NL80211_IFTYPE_ADHOC:
3951 if (intbss == wdev->current_bss)
3952 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3953 NL80211_BSS_STATUS_IBSS_JOINED);
3954 break;
3955 default:
3956 break;
3957 }
3958
3959 nla_nest_end(msg, bss);
3960
3961 return genlmsg_end(msg, hdr);
3962
3963 nla_put_failure:
3964 genlmsg_cancel(msg, hdr);
3965 return -EMSGSIZE;
3966 }
3967
3968 static int nl80211_dump_scan(struct sk_buff *skb,
3969 struct netlink_callback *cb)
3970 {
3971 struct cfg80211_registered_device *rdev;
3972 struct net_device *dev;
3973 struct cfg80211_internal_bss *scan;
3974 struct wireless_dev *wdev;
3975 int start = cb->args[1], idx = 0;
3976 int err;
3977
3978 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3979 if (err)
3980 return err;
3981
3982 wdev = dev->ieee80211_ptr;
3983
3984 wdev_lock(wdev);
3985 spin_lock_bh(&rdev->bss_lock);
3986 cfg80211_bss_expire(rdev);
3987
3988 cb->seq = rdev->bss_generation;
3989
3990 list_for_each_entry(scan, &rdev->bss_list, list) {
3991 if (++idx <= start)
3992 continue;
3993 if (nl80211_send_bss(skb, cb,
3994 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3995 rdev, wdev, scan) < 0) {
3996 idx--;
3997 break;
3998 }
3999 }
4000
4001 spin_unlock_bh(&rdev->bss_lock);
4002 wdev_unlock(wdev);
4003
4004 cb->args[1] = idx;
4005 nl80211_finish_netdev_dump(rdev);
4006
4007 return skb->len;
4008 }
4009
4010 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4011 int flags, struct net_device *dev,
4012 struct survey_info *survey)
4013 {
4014 void *hdr;
4015 struct nlattr *infoattr;
4016
4017 hdr = nl80211hdr_put(msg, pid, seq, flags,
4018 NL80211_CMD_NEW_SURVEY_RESULTS);
4019 if (!hdr)
4020 return -ENOMEM;
4021
4022 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4023
4024 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4025 if (!infoattr)
4026 goto nla_put_failure;
4027
4028 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4029 survey->channel->center_freq);
4030 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4031 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4032 survey->noise);
4033 if (survey->filled & SURVEY_INFO_IN_USE)
4034 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4035 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4036 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4037 survey->channel_time);
4038 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4039 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4040 survey->channel_time_busy);
4041 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4042 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4043 survey->channel_time_ext_busy);
4044 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4045 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4046 survey->channel_time_rx);
4047 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4048 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4049 survey->channel_time_tx);
4050
4051 nla_nest_end(msg, infoattr);
4052
4053 return genlmsg_end(msg, hdr);
4054
4055 nla_put_failure:
4056 genlmsg_cancel(msg, hdr);
4057 return -EMSGSIZE;
4058 }
4059
4060 static int nl80211_dump_survey(struct sk_buff *skb,
4061 struct netlink_callback *cb)
4062 {
4063 struct survey_info survey;
4064 struct cfg80211_registered_device *dev;
4065 struct net_device *netdev;
4066 int survey_idx = cb->args[1];
4067 int res;
4068
4069 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4070 if (res)
4071 return res;
4072
4073 if (!dev->ops->dump_survey) {
4074 res = -EOPNOTSUPP;
4075 goto out_err;
4076 }
4077
4078 while (1) {
4079 struct ieee80211_channel *chan;
4080
4081 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4082 &survey);
4083 if (res == -ENOENT)
4084 break;
4085 if (res)
4086 goto out_err;
4087
4088 /* Survey without a channel doesn't make sense */
4089 if (!survey.channel) {
4090 res = -EINVAL;
4091 goto out;
4092 }
4093
4094 chan = ieee80211_get_channel(&dev->wiphy,
4095 survey.channel->center_freq);
4096 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4097 survey_idx++;
4098 continue;
4099 }
4100
4101 if (nl80211_send_survey(skb,
4102 NETLINK_CB(cb->skb).pid,
4103 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4104 netdev,
4105 &survey) < 0)
4106 goto out;
4107 survey_idx++;
4108 }
4109
4110 out:
4111 cb->args[1] = survey_idx;
4112 res = skb->len;
4113 out_err:
4114 nl80211_finish_netdev_dump(dev);
4115 return res;
4116 }
4117
4118 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4119 {
4120 return auth_type <= NL80211_AUTHTYPE_MAX;
4121 }
4122
4123 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4124 {
4125 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4126 NL80211_WPA_VERSION_2));
4127 }
4128
4129 static bool nl80211_valid_cipher_suite(u32 cipher)
4130 {
4131 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
4132 cipher == WLAN_CIPHER_SUITE_WEP104 ||
4133 cipher == WLAN_CIPHER_SUITE_TKIP ||
4134 cipher == WLAN_CIPHER_SUITE_CCMP ||
4135 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
4136 }
4137
4138
4139 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4140 {
4141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4142 struct net_device *dev = info->user_ptr[1];
4143 struct ieee80211_channel *chan;
4144 const u8 *bssid, *ssid, *ie = NULL;
4145 int err, ssid_len, ie_len = 0;
4146 enum nl80211_auth_type auth_type;
4147 struct key_parse key;
4148 bool local_state_change;
4149
4150 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4151 return -EINVAL;
4152
4153 if (!info->attrs[NL80211_ATTR_MAC])
4154 return -EINVAL;
4155
4156 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4157 return -EINVAL;
4158
4159 if (!info->attrs[NL80211_ATTR_SSID])
4160 return -EINVAL;
4161
4162 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4163 return -EINVAL;
4164
4165 err = nl80211_parse_key(info, &key);
4166 if (err)
4167 return err;
4168
4169 if (key.idx >= 0) {
4170 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4171 return -EINVAL;
4172 if (!key.p.key || !key.p.key_len)
4173 return -EINVAL;
4174 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4175 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4176 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4177 key.p.key_len != WLAN_KEY_LEN_WEP104))
4178 return -EINVAL;
4179 if (key.idx > 4)
4180 return -EINVAL;
4181 } else {
4182 key.p.key_len = 0;
4183 key.p.key = NULL;
4184 }
4185
4186 if (key.idx >= 0) {
4187 int i;
4188 bool ok = false;
4189 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4190 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4191 ok = true;
4192 break;
4193 }
4194 }
4195 if (!ok)
4196 return -EINVAL;
4197 }
4198
4199 if (!rdev->ops->auth)
4200 return -EOPNOTSUPP;
4201
4202 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4203 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4204 return -EOPNOTSUPP;
4205
4206 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4207 chan = ieee80211_get_channel(&rdev->wiphy,
4208 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4209 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4210 return -EINVAL;
4211
4212 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4213 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4214
4215 if (info->attrs[NL80211_ATTR_IE]) {
4216 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4217 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4218 }
4219
4220 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4221 if (!nl80211_valid_auth_type(auth_type))
4222 return -EINVAL;
4223
4224 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4225
4226 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4227 ssid, ssid_len, ie, ie_len,
4228 key.p.key, key.p.key_len, key.idx,
4229 local_state_change);
4230 }
4231
4232 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4233 struct genl_info *info,
4234 struct cfg80211_crypto_settings *settings,
4235 int cipher_limit)
4236 {
4237 memset(settings, 0, sizeof(*settings));
4238
4239 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4240
4241 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4242 u16 proto;
4243 proto = nla_get_u16(
4244 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4245 settings->control_port_ethertype = cpu_to_be16(proto);
4246 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4247 proto != ETH_P_PAE)
4248 return -EINVAL;
4249 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4250 settings->control_port_no_encrypt = true;
4251 } else
4252 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4253
4254 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4255 void *data;
4256 int len, i;
4257
4258 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4259 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4260 settings->n_ciphers_pairwise = len / sizeof(u32);
4261
4262 if (len % sizeof(u32))
4263 return -EINVAL;
4264
4265 if (settings->n_ciphers_pairwise > cipher_limit)
4266 return -EINVAL;
4267
4268 memcpy(settings->ciphers_pairwise, data, len);
4269
4270 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4271 if (!nl80211_valid_cipher_suite(
4272 settings->ciphers_pairwise[i]))
4273 return -EINVAL;
4274 }
4275
4276 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4277 settings->cipher_group =
4278 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4279 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4280 return -EINVAL;
4281 }
4282
4283 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4284 settings->wpa_versions =
4285 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4286 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4287 return -EINVAL;
4288 }
4289
4290 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4291 void *data;
4292 int len;
4293
4294 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4295 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4296 settings->n_akm_suites = len / sizeof(u32);
4297
4298 if (len % sizeof(u32))
4299 return -EINVAL;
4300
4301 memcpy(settings->akm_suites, data, len);
4302 }
4303
4304 return 0;
4305 }
4306
4307 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4308 {
4309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4310 struct net_device *dev = info->user_ptr[1];
4311 struct cfg80211_crypto_settings crypto;
4312 struct ieee80211_channel *chan;
4313 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4314 int err, ssid_len, ie_len = 0;
4315 bool use_mfp = false;
4316
4317 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4318 return -EINVAL;
4319
4320 if (!info->attrs[NL80211_ATTR_MAC] ||
4321 !info->attrs[NL80211_ATTR_SSID] ||
4322 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4323 return -EINVAL;
4324
4325 if (!rdev->ops->assoc)
4326 return -EOPNOTSUPP;
4327
4328 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4329 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4330 return -EOPNOTSUPP;
4331
4332 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4333
4334 chan = ieee80211_get_channel(&rdev->wiphy,
4335 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4336 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4337 return -EINVAL;
4338
4339 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4340 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4341
4342 if (info->attrs[NL80211_ATTR_IE]) {
4343 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4344 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4345 }
4346
4347 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4348 enum nl80211_mfp mfp =
4349 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4350 if (mfp == NL80211_MFP_REQUIRED)
4351 use_mfp = true;
4352 else if (mfp != NL80211_MFP_NO)
4353 return -EINVAL;
4354 }
4355
4356 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4357 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4358
4359 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4360 if (!err)
4361 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4362 ssid, ssid_len, ie, ie_len, use_mfp,
4363 &crypto);
4364
4365 return err;
4366 }
4367
4368 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4369 {
4370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4371 struct net_device *dev = info->user_ptr[1];
4372 const u8 *ie = NULL, *bssid;
4373 int ie_len = 0;
4374 u16 reason_code;
4375 bool local_state_change;
4376
4377 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4378 return -EINVAL;
4379
4380 if (!info->attrs[NL80211_ATTR_MAC])
4381 return -EINVAL;
4382
4383 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4384 return -EINVAL;
4385
4386 if (!rdev->ops->deauth)
4387 return -EOPNOTSUPP;
4388
4389 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4390 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4391 return -EOPNOTSUPP;
4392
4393 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4394
4395 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4396 if (reason_code == 0) {
4397 /* Reason Code 0 is reserved */
4398 return -EINVAL;
4399 }
4400
4401 if (info->attrs[NL80211_ATTR_IE]) {
4402 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4403 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4404 }
4405
4406 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4407
4408 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4409 local_state_change);
4410 }
4411
4412 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4413 {
4414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4415 struct net_device *dev = info->user_ptr[1];
4416 const u8 *ie = NULL, *bssid;
4417 int ie_len = 0;
4418 u16 reason_code;
4419 bool local_state_change;
4420
4421 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4422 return -EINVAL;
4423
4424 if (!info->attrs[NL80211_ATTR_MAC])
4425 return -EINVAL;
4426
4427 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4428 return -EINVAL;
4429
4430 if (!rdev->ops->disassoc)
4431 return -EOPNOTSUPP;
4432
4433 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4434 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4435 return -EOPNOTSUPP;
4436
4437 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4438
4439 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4440 if (reason_code == 0) {
4441 /* Reason Code 0 is reserved */
4442 return -EINVAL;
4443 }
4444
4445 if (info->attrs[NL80211_ATTR_IE]) {
4446 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4447 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4448 }
4449
4450 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4451
4452 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4453 local_state_change);
4454 }
4455
4456 static bool
4457 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4458 int mcast_rate[IEEE80211_NUM_BANDS],
4459 int rateval)
4460 {
4461 struct wiphy *wiphy = &rdev->wiphy;
4462 bool found = false;
4463 int band, i;
4464
4465 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4466 struct ieee80211_supported_band *sband;
4467
4468 sband = wiphy->bands[band];
4469 if (!sband)
4470 continue;
4471
4472 for (i = 0; i < sband->n_bitrates; i++) {
4473 if (sband->bitrates[i].bitrate == rateval) {
4474 mcast_rate[band] = i + 1;
4475 found = true;
4476 break;
4477 }
4478 }
4479 }
4480
4481 return found;
4482 }
4483
4484 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4485 {
4486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4487 struct net_device *dev = info->user_ptr[1];
4488 struct cfg80211_ibss_params ibss;
4489 struct wiphy *wiphy;
4490 struct cfg80211_cached_keys *connkeys = NULL;
4491 int err;
4492
4493 memset(&ibss, 0, sizeof(ibss));
4494
4495 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4496 return -EINVAL;
4497
4498 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4499 !info->attrs[NL80211_ATTR_SSID] ||
4500 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4501 return -EINVAL;
4502
4503 ibss.beacon_interval = 100;
4504
4505 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4506 ibss.beacon_interval =
4507 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4508 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4509 return -EINVAL;
4510 }
4511
4512 if (!rdev->ops->join_ibss)
4513 return -EOPNOTSUPP;
4514
4515 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4516 return -EOPNOTSUPP;
4517
4518 wiphy = &rdev->wiphy;
4519
4520 if (info->attrs[NL80211_ATTR_MAC]) {
4521 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4522
4523 if (!is_valid_ether_addr(ibss.bssid))
4524 return -EINVAL;
4525 }
4526 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4527 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4528
4529 if (info->attrs[NL80211_ATTR_IE]) {
4530 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4531 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4532 }
4533
4534 ibss.channel = ieee80211_get_channel(wiphy,
4535 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4536 if (!ibss.channel ||
4537 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4538 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4539 return -EINVAL;
4540
4541 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4542 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4543
4544 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4545 u8 *rates =
4546 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4547 int n_rates =
4548 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4549 struct ieee80211_supported_band *sband =
4550 wiphy->bands[ibss.channel->band];
4551 int err;
4552
4553 err = ieee80211_get_ratemask(sband, rates, n_rates,
4554 &ibss.basic_rates);
4555 if (err)
4556 return err;
4557 }
4558
4559 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4560 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4561 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4562 return -EINVAL;
4563
4564 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4565 connkeys = nl80211_parse_connkeys(rdev,
4566 info->attrs[NL80211_ATTR_KEYS]);
4567 if (IS_ERR(connkeys))
4568 return PTR_ERR(connkeys);
4569 }
4570
4571 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4572 if (err)
4573 kfree(connkeys);
4574 return err;
4575 }
4576
4577 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4578 {
4579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4580 struct net_device *dev = info->user_ptr[1];
4581
4582 if (!rdev->ops->leave_ibss)
4583 return -EOPNOTSUPP;
4584
4585 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4586 return -EOPNOTSUPP;
4587
4588 return cfg80211_leave_ibss(rdev, dev, false);
4589 }
4590
4591 #ifdef CONFIG_NL80211_TESTMODE
4592 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4593 .name = "testmode",
4594 };
4595
4596 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4597 {
4598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4599 int err;
4600
4601 if (!info->attrs[NL80211_ATTR_TESTDATA])
4602 return -EINVAL;
4603
4604 err = -EOPNOTSUPP;
4605 if (rdev->ops->testmode_cmd) {
4606 rdev->testmode_info = info;
4607 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4608 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4609 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4610 rdev->testmode_info = NULL;
4611 }
4612
4613 return err;
4614 }
4615
4616 static int nl80211_testmode_dump(struct sk_buff *skb,
4617 struct netlink_callback *cb)
4618 {
4619 struct cfg80211_registered_device *dev;
4620 int err;
4621 long phy_idx;
4622 void *data = NULL;
4623 int data_len = 0;
4624
4625 if (cb->args[0]) {
4626 /*
4627 * 0 is a valid index, but not valid for args[0],
4628 * so we need to offset by 1.
4629 */
4630 phy_idx = cb->args[0] - 1;
4631 } else {
4632 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4633 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4634 nl80211_policy);
4635 if (err)
4636 return err;
4637 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4638 return -EINVAL;
4639 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4640 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4641 cb->args[1] =
4642 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4643 }
4644
4645 if (cb->args[1]) {
4646 data = nla_data((void *)cb->args[1]);
4647 data_len = nla_len((void *)cb->args[1]);
4648 }
4649
4650 mutex_lock(&cfg80211_mutex);
4651 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4652 if (!dev) {
4653 mutex_unlock(&cfg80211_mutex);
4654 return -ENOENT;
4655 }
4656 cfg80211_lock_rdev(dev);
4657 mutex_unlock(&cfg80211_mutex);
4658
4659 if (!dev->ops->testmode_dump) {
4660 err = -EOPNOTSUPP;
4661 goto out_err;
4662 }
4663
4664 while (1) {
4665 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4666 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4667 NL80211_CMD_TESTMODE);
4668 struct nlattr *tmdata;
4669
4670 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4671 genlmsg_cancel(skb, hdr);
4672 break;
4673 }
4674
4675 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4676 if (!tmdata) {
4677 genlmsg_cancel(skb, hdr);
4678 break;
4679 }
4680 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4681 data, data_len);
4682 nla_nest_end(skb, tmdata);
4683
4684 if (err == -ENOBUFS || err == -ENOENT) {
4685 genlmsg_cancel(skb, hdr);
4686 break;
4687 } else if (err) {
4688 genlmsg_cancel(skb, hdr);
4689 goto out_err;
4690 }
4691
4692 genlmsg_end(skb, hdr);
4693 }
4694
4695 err = skb->len;
4696 /* see above */
4697 cb->args[0] = phy_idx + 1;
4698 out_err:
4699 cfg80211_unlock_rdev(dev);
4700 return err;
4701 }
4702
4703 static struct sk_buff *
4704 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4705 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4706 {
4707 struct sk_buff *skb;
4708 void *hdr;
4709 struct nlattr *data;
4710
4711 skb = nlmsg_new(approxlen + 100, gfp);
4712 if (!skb)
4713 return NULL;
4714
4715 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4716 if (!hdr) {
4717 kfree_skb(skb);
4718 return NULL;
4719 }
4720
4721 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4722 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4723
4724 ((void **)skb->cb)[0] = rdev;
4725 ((void **)skb->cb)[1] = hdr;
4726 ((void **)skb->cb)[2] = data;
4727
4728 return skb;
4729
4730 nla_put_failure:
4731 kfree_skb(skb);
4732 return NULL;
4733 }
4734
4735 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4736 int approxlen)
4737 {
4738 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4739
4740 if (WARN_ON(!rdev->testmode_info))
4741 return NULL;
4742
4743 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4744 rdev->testmode_info->snd_pid,
4745 rdev->testmode_info->snd_seq,
4746 GFP_KERNEL);
4747 }
4748 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4749
4750 int cfg80211_testmode_reply(struct sk_buff *skb)
4751 {
4752 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4753 void *hdr = ((void **)skb->cb)[1];
4754 struct nlattr *data = ((void **)skb->cb)[2];
4755
4756 if (WARN_ON(!rdev->testmode_info)) {
4757 kfree_skb(skb);
4758 return -EINVAL;
4759 }
4760
4761 nla_nest_end(skb, data);
4762 genlmsg_end(skb, hdr);
4763 return genlmsg_reply(skb, rdev->testmode_info);
4764 }
4765 EXPORT_SYMBOL(cfg80211_testmode_reply);
4766
4767 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4768 int approxlen, gfp_t gfp)
4769 {
4770 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4771
4772 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4773 }
4774 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4775
4776 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4777 {
4778 void *hdr = ((void **)skb->cb)[1];
4779 struct nlattr *data = ((void **)skb->cb)[2];
4780
4781 nla_nest_end(skb, data);
4782 genlmsg_end(skb, hdr);
4783 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4784 }
4785 EXPORT_SYMBOL(cfg80211_testmode_event);
4786 #endif
4787
4788 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4789 {
4790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4791 struct net_device *dev = info->user_ptr[1];
4792 struct cfg80211_connect_params connect;
4793 struct wiphy *wiphy;
4794 struct cfg80211_cached_keys *connkeys = NULL;
4795 int err;
4796
4797 memset(&connect, 0, sizeof(connect));
4798
4799 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4800 return -EINVAL;
4801
4802 if (!info->attrs[NL80211_ATTR_SSID] ||
4803 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4804 return -EINVAL;
4805
4806 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4807 connect.auth_type =
4808 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4809 if (!nl80211_valid_auth_type(connect.auth_type))
4810 return -EINVAL;
4811 } else
4812 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4813
4814 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4815
4816 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4817 NL80211_MAX_NR_CIPHER_SUITES);
4818 if (err)
4819 return err;
4820
4821 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4822 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4823 return -EOPNOTSUPP;
4824
4825 wiphy = &rdev->wiphy;
4826
4827 if (info->attrs[NL80211_ATTR_MAC])
4828 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4829 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4830 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4831
4832 if (info->attrs[NL80211_ATTR_IE]) {
4833 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4834 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4835 }
4836
4837 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4838 connect.channel =
4839 ieee80211_get_channel(wiphy,
4840 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4841 if (!connect.channel ||
4842 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4843 return -EINVAL;
4844 }
4845
4846 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4847 connkeys = nl80211_parse_connkeys(rdev,
4848 info->attrs[NL80211_ATTR_KEYS]);
4849 if (IS_ERR(connkeys))
4850 return PTR_ERR(connkeys);
4851 }
4852
4853 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4854 if (err)
4855 kfree(connkeys);
4856 return err;
4857 }
4858
4859 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4860 {
4861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4862 struct net_device *dev = info->user_ptr[1];
4863 u16 reason;
4864
4865 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4866 reason = WLAN_REASON_DEAUTH_LEAVING;
4867 else
4868 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4869
4870 if (reason == 0)
4871 return -EINVAL;
4872
4873 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4874 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4875 return -EOPNOTSUPP;
4876
4877 return cfg80211_disconnect(rdev, dev, reason, true);
4878 }
4879
4880 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4881 {
4882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4883 struct net *net;
4884 int err;
4885 u32 pid;
4886
4887 if (!info->attrs[NL80211_ATTR_PID])
4888 return -EINVAL;
4889
4890 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4891
4892 net = get_net_ns_by_pid(pid);
4893 if (IS_ERR(net))
4894 return PTR_ERR(net);
4895
4896 err = 0;
4897
4898 /* check if anything to do */
4899 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4900 err = cfg80211_switch_netns(rdev, net);
4901
4902 put_net(net);
4903 return err;
4904 }
4905
4906 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4907 {
4908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4909 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4910 struct cfg80211_pmksa *pmksa) = NULL;
4911 struct net_device *dev = info->user_ptr[1];
4912 struct cfg80211_pmksa pmksa;
4913
4914 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4915
4916 if (!info->attrs[NL80211_ATTR_MAC])
4917 return -EINVAL;
4918
4919 if (!info->attrs[NL80211_ATTR_PMKID])
4920 return -EINVAL;
4921
4922 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4923 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4924
4925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4927 return -EOPNOTSUPP;
4928
4929 switch (info->genlhdr->cmd) {
4930 case NL80211_CMD_SET_PMKSA:
4931 rdev_ops = rdev->ops->set_pmksa;
4932 break;
4933 case NL80211_CMD_DEL_PMKSA:
4934 rdev_ops = rdev->ops->del_pmksa;
4935 break;
4936 default:
4937 WARN_ON(1);
4938 break;
4939 }
4940
4941 if (!rdev_ops)
4942 return -EOPNOTSUPP;
4943
4944 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4945 }
4946
4947 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4948 {
4949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4950 struct net_device *dev = info->user_ptr[1];
4951
4952 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4953 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4954 return -EOPNOTSUPP;
4955
4956 if (!rdev->ops->flush_pmksa)
4957 return -EOPNOTSUPP;
4958
4959 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4960 }
4961
4962 static int nl80211_remain_on_channel(struct sk_buff *skb,
4963 struct genl_info *info)
4964 {
4965 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4966 struct net_device *dev = info->user_ptr[1];
4967 struct ieee80211_channel *chan;
4968 struct sk_buff *msg;
4969 void *hdr;
4970 u64 cookie;
4971 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4972 u32 freq, duration;
4973 int err;
4974
4975 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4976 !info->attrs[NL80211_ATTR_DURATION])
4977 return -EINVAL;
4978
4979 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4980
4981 /*
4982 * We should be on that channel for at least one jiffie,
4983 * and more than 5 seconds seems excessive.
4984 */
4985 if (!duration || !msecs_to_jiffies(duration) ||
4986 duration > rdev->wiphy.max_remain_on_channel_duration)
4987 return -EINVAL;
4988
4989 if (!rdev->ops->remain_on_channel)
4990 return -EOPNOTSUPP;
4991
4992 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4993 channel_type = nla_get_u32(
4994 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4995 if (channel_type != NL80211_CHAN_NO_HT &&
4996 channel_type != NL80211_CHAN_HT20 &&
4997 channel_type != NL80211_CHAN_HT40PLUS &&
4998 channel_type != NL80211_CHAN_HT40MINUS)
4999 return -EINVAL;
5000 }
5001
5002 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5003 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5004 if (chan == NULL)
5005 return -EINVAL;
5006
5007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5008 if (!msg)
5009 return -ENOMEM;
5010
5011 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5012 NL80211_CMD_REMAIN_ON_CHANNEL);
5013
5014 if (IS_ERR(hdr)) {
5015 err = PTR_ERR(hdr);
5016 goto free_msg;
5017 }
5018
5019 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5020 channel_type, duration, &cookie);
5021
5022 if (err)
5023 goto free_msg;
5024
5025 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5026
5027 genlmsg_end(msg, hdr);
5028
5029 return genlmsg_reply(msg, info);
5030
5031 nla_put_failure:
5032 err = -ENOBUFS;
5033 free_msg:
5034 nlmsg_free(msg);
5035 return err;
5036 }
5037
5038 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5039 struct genl_info *info)
5040 {
5041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5042 struct net_device *dev = info->user_ptr[1];
5043 u64 cookie;
5044
5045 if (!info->attrs[NL80211_ATTR_COOKIE])
5046 return -EINVAL;
5047
5048 if (!rdev->ops->cancel_remain_on_channel)
5049 return -EOPNOTSUPP;
5050
5051 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5052
5053 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5054 }
5055
5056 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5057 u8 *rates, u8 rates_len)
5058 {
5059 u8 i;
5060 u32 mask = 0;
5061
5062 for (i = 0; i < rates_len; i++) {
5063 int rate = (rates[i] & 0x7f) * 5;
5064 int ridx;
5065 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5066 struct ieee80211_rate *srate =
5067 &sband->bitrates[ridx];
5068 if (rate == srate->bitrate) {
5069 mask |= 1 << ridx;
5070 break;
5071 }
5072 }
5073 if (ridx == sband->n_bitrates)
5074 return 0; /* rate not found */
5075 }
5076
5077 return mask;
5078 }
5079
5080 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5081 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5082 .len = NL80211_MAX_SUPP_RATES },
5083 };
5084
5085 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5086 struct genl_info *info)
5087 {
5088 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5090 struct cfg80211_bitrate_mask mask;
5091 int rem, i;
5092 struct net_device *dev = info->user_ptr[1];
5093 struct nlattr *tx_rates;
5094 struct ieee80211_supported_band *sband;
5095
5096 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5097 return -EINVAL;
5098
5099 if (!rdev->ops->set_bitrate_mask)
5100 return -EOPNOTSUPP;
5101
5102 memset(&mask, 0, sizeof(mask));
5103 /* Default to all rates enabled */
5104 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5105 sband = rdev->wiphy.bands[i];
5106 mask.control[i].legacy =
5107 sband ? (1 << sband->n_bitrates) - 1 : 0;
5108 }
5109
5110 /*
5111 * The nested attribute uses enum nl80211_band as the index. This maps
5112 * directly to the enum ieee80211_band values used in cfg80211.
5113 */
5114 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5115 {
5116 enum ieee80211_band band = nla_type(tx_rates);
5117 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5118 return -EINVAL;
5119 sband = rdev->wiphy.bands[band];
5120 if (sband == NULL)
5121 return -EINVAL;
5122 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5123 nla_len(tx_rates), nl80211_txattr_policy);
5124 if (tb[NL80211_TXRATE_LEGACY]) {
5125 mask.control[band].legacy = rateset_to_mask(
5126 sband,
5127 nla_data(tb[NL80211_TXRATE_LEGACY]),
5128 nla_len(tb[NL80211_TXRATE_LEGACY]));
5129 if (mask.control[band].legacy == 0)
5130 return -EINVAL;
5131 }
5132 }
5133
5134 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5135 }
5136
5137 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5138 {
5139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5140 struct net_device *dev = info->user_ptr[1];
5141 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5142
5143 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5144 return -EINVAL;
5145
5146 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5147 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5148
5149 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5150 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5153 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5154 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5155 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5156 return -EOPNOTSUPP;
5157
5158 /* not much point in registering if we can't reply */
5159 if (!rdev->ops->mgmt_tx)
5160 return -EOPNOTSUPP;
5161
5162 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5163 frame_type,
5164 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5165 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5166 }
5167
5168 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5169 {
5170 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5171 struct net_device *dev = info->user_ptr[1];
5172 struct ieee80211_channel *chan;
5173 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5174 bool channel_type_valid = false;
5175 u32 freq;
5176 int err;
5177 void *hdr;
5178 u64 cookie;
5179 struct sk_buff *msg;
5180 unsigned int wait = 0;
5181 bool offchan;
5182
5183 if (!info->attrs[NL80211_ATTR_FRAME] ||
5184 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5185 return -EINVAL;
5186
5187 if (!rdev->ops->mgmt_tx)
5188 return -EOPNOTSUPP;
5189
5190 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5191 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5192 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5193 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5194 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5195 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5197 return -EOPNOTSUPP;
5198
5199 if (info->attrs[NL80211_ATTR_DURATION]) {
5200 if (!rdev->ops->mgmt_tx_cancel_wait)
5201 return -EINVAL;
5202 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5203 }
5204
5205 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5206 channel_type = nla_get_u32(
5207 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5208 if (channel_type != NL80211_CHAN_NO_HT &&
5209 channel_type != NL80211_CHAN_HT20 &&
5210 channel_type != NL80211_CHAN_HT40PLUS &&
5211 channel_type != NL80211_CHAN_HT40MINUS)
5212 return -EINVAL;
5213 channel_type_valid = true;
5214 }
5215
5216 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5217
5218 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5219 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5220 if (chan == NULL)
5221 return -EINVAL;
5222
5223 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5224 if (!msg)
5225 return -ENOMEM;
5226
5227 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5228 NL80211_CMD_FRAME);
5229
5230 if (IS_ERR(hdr)) {
5231 err = PTR_ERR(hdr);
5232 goto free_msg;
5233 }
5234 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5235 channel_type_valid, wait,
5236 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5237 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5238 &cookie);
5239 if (err)
5240 goto free_msg;
5241
5242 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5243
5244 genlmsg_end(msg, hdr);
5245 return genlmsg_reply(msg, info);
5246
5247 nla_put_failure:
5248 err = -ENOBUFS;
5249 free_msg:
5250 nlmsg_free(msg);
5251 return err;
5252 }
5253
5254 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5255 {
5256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5257 struct net_device *dev = info->user_ptr[1];
5258 u64 cookie;
5259
5260 if (!info->attrs[NL80211_ATTR_COOKIE])
5261 return -EINVAL;
5262
5263 if (!rdev->ops->mgmt_tx_cancel_wait)
5264 return -EOPNOTSUPP;
5265
5266 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5267 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5268 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5269 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5270 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5271 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5272 return -EOPNOTSUPP;
5273
5274 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5275
5276 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5277 }
5278
5279 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5280 {
5281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5282 struct wireless_dev *wdev;
5283 struct net_device *dev = info->user_ptr[1];
5284 u8 ps_state;
5285 bool state;
5286 int err;
5287
5288 if (!info->attrs[NL80211_ATTR_PS_STATE])
5289 return -EINVAL;
5290
5291 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5292
5293 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5294 return -EINVAL;
5295
5296 wdev = dev->ieee80211_ptr;
5297
5298 if (!rdev->ops->set_power_mgmt)
5299 return -EOPNOTSUPP;
5300
5301 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5302
5303 if (state == wdev->ps)
5304 return 0;
5305
5306 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5307 wdev->ps_timeout);
5308 if (!err)
5309 wdev->ps = state;
5310 return err;
5311 }
5312
5313 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5314 {
5315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5316 enum nl80211_ps_state ps_state;
5317 struct wireless_dev *wdev;
5318 struct net_device *dev = info->user_ptr[1];
5319 struct sk_buff *msg;
5320 void *hdr;
5321 int err;
5322
5323 wdev = dev->ieee80211_ptr;
5324
5325 if (!rdev->ops->set_power_mgmt)
5326 return -EOPNOTSUPP;
5327
5328 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5329 if (!msg)
5330 return -ENOMEM;
5331
5332 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5333 NL80211_CMD_GET_POWER_SAVE);
5334 if (!hdr) {
5335 err = -ENOBUFS;
5336 goto free_msg;
5337 }
5338
5339 if (wdev->ps)
5340 ps_state = NL80211_PS_ENABLED;
5341 else
5342 ps_state = NL80211_PS_DISABLED;
5343
5344 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5345
5346 genlmsg_end(msg, hdr);
5347 return genlmsg_reply(msg, info);
5348
5349 nla_put_failure:
5350 err = -ENOBUFS;
5351 free_msg:
5352 nlmsg_free(msg);
5353 return err;
5354 }
5355
5356 static struct nla_policy
5357 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5358 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5359 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5360 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5361 };
5362
5363 static int nl80211_set_cqm_rssi(struct genl_info *info,
5364 s32 threshold, u32 hysteresis)
5365 {
5366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5367 struct wireless_dev *wdev;
5368 struct net_device *dev = info->user_ptr[1];
5369
5370 if (threshold > 0)
5371 return -EINVAL;
5372
5373 wdev = dev->ieee80211_ptr;
5374
5375 if (!rdev->ops->set_cqm_rssi_config)
5376 return -EOPNOTSUPP;
5377
5378 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5379 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5380 return -EOPNOTSUPP;
5381
5382 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5383 threshold, hysteresis);
5384 }
5385
5386 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5387 {
5388 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5389 struct nlattr *cqm;
5390 int err;
5391
5392 cqm = info->attrs[NL80211_ATTR_CQM];
5393 if (!cqm) {
5394 err = -EINVAL;
5395 goto out;
5396 }
5397
5398 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5399 nl80211_attr_cqm_policy);
5400 if (err)
5401 goto out;
5402
5403 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5404 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5405 s32 threshold;
5406 u32 hysteresis;
5407 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5408 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5409 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5410 } else
5411 err = -EINVAL;
5412
5413 out:
5414 return err;
5415 }
5416
5417 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5418 {
5419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5420 struct net_device *dev = info->user_ptr[1];
5421 struct mesh_config cfg;
5422 struct mesh_setup setup;
5423 int err;
5424
5425 /* start with default */
5426 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5427 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5428
5429 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5430 /* and parse parameters if given */
5431 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5432 if (err)
5433 return err;
5434 }
5435
5436 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5437 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5438 return -EINVAL;
5439
5440 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5441 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5442
5443 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5444 /* parse additional setup parameters if given */
5445 err = nl80211_parse_mesh_setup(info, &setup);
5446 if (err)
5447 return err;
5448 }
5449
5450 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5451 }
5452
5453 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5454 {
5455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5456 struct net_device *dev = info->user_ptr[1];
5457
5458 return cfg80211_leave_mesh(rdev, dev);
5459 }
5460
5461 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5462 {
5463 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5464 struct sk_buff *msg;
5465 void *hdr;
5466
5467 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5468 return -EOPNOTSUPP;
5469
5470 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5471 if (!msg)
5472 return -ENOMEM;
5473
5474 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5475 NL80211_CMD_GET_WOWLAN);
5476 if (!hdr)
5477 goto nla_put_failure;
5478
5479 if (rdev->wowlan) {
5480 struct nlattr *nl_wowlan;
5481
5482 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5483 if (!nl_wowlan)
5484 goto nla_put_failure;
5485
5486 if (rdev->wowlan->any)
5487 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5488 if (rdev->wowlan->disconnect)
5489 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5490 if (rdev->wowlan->magic_pkt)
5491 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5492 if (rdev->wowlan->gtk_rekey_failure)
5493 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5494 if (rdev->wowlan->eap_identity_req)
5495 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5496 if (rdev->wowlan->four_way_handshake)
5497 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5498 if (rdev->wowlan->rfkill_release)
5499 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5500 if (rdev->wowlan->n_patterns) {
5501 struct nlattr *nl_pats, *nl_pat;
5502 int i, pat_len;
5503
5504 nl_pats = nla_nest_start(msg,
5505 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5506 if (!nl_pats)
5507 goto nla_put_failure;
5508
5509 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5510 nl_pat = nla_nest_start(msg, i + 1);
5511 if (!nl_pat)
5512 goto nla_put_failure;
5513 pat_len = rdev->wowlan->patterns[i].pattern_len;
5514 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5515 DIV_ROUND_UP(pat_len, 8),
5516 rdev->wowlan->patterns[i].mask);
5517 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5518 pat_len,
5519 rdev->wowlan->patterns[i].pattern);
5520 nla_nest_end(msg, nl_pat);
5521 }
5522 nla_nest_end(msg, nl_pats);
5523 }
5524
5525 nla_nest_end(msg, nl_wowlan);
5526 }
5527
5528 genlmsg_end(msg, hdr);
5529 return genlmsg_reply(msg, info);
5530
5531 nla_put_failure:
5532 nlmsg_free(msg);
5533 return -ENOBUFS;
5534 }
5535
5536 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5537 {
5538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5539 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5540 struct cfg80211_wowlan no_triggers = {};
5541 struct cfg80211_wowlan new_triggers = {};
5542 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5543 int err, i;
5544
5545 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5546 return -EOPNOTSUPP;
5547
5548 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5549 goto no_triggers;
5550
5551 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5552 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5553 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5554 nl80211_wowlan_policy);
5555 if (err)
5556 return err;
5557
5558 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5559 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5560 return -EINVAL;
5561 new_triggers.any = true;
5562 }
5563
5564 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5565 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5566 return -EINVAL;
5567 new_triggers.disconnect = true;
5568 }
5569
5570 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5571 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5572 return -EINVAL;
5573 new_triggers.magic_pkt = true;
5574 }
5575
5576 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5577 return -EINVAL;
5578
5579 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5580 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5581 return -EINVAL;
5582 new_triggers.gtk_rekey_failure = true;
5583 }
5584
5585 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5586 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5587 return -EINVAL;
5588 new_triggers.eap_identity_req = true;
5589 }
5590
5591 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5592 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5593 return -EINVAL;
5594 new_triggers.four_way_handshake = true;
5595 }
5596
5597 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5598 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5599 return -EINVAL;
5600 new_triggers.rfkill_release = true;
5601 }
5602
5603 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5604 struct nlattr *pat;
5605 int n_patterns = 0;
5606 int rem, pat_len, mask_len;
5607 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5608
5609 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5610 rem)
5611 n_patterns++;
5612 if (n_patterns > wowlan->n_patterns)
5613 return -EINVAL;
5614
5615 new_triggers.patterns = kcalloc(n_patterns,
5616 sizeof(new_triggers.patterns[0]),
5617 GFP_KERNEL);
5618 if (!new_triggers.patterns)
5619 return -ENOMEM;
5620
5621 new_triggers.n_patterns = n_patterns;
5622 i = 0;
5623
5624 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5625 rem) {
5626 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5627 nla_data(pat), nla_len(pat), NULL);
5628 err = -EINVAL;
5629 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5630 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5631 goto error;
5632 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5633 mask_len = DIV_ROUND_UP(pat_len, 8);
5634 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5635 mask_len)
5636 goto error;
5637 if (pat_len > wowlan->pattern_max_len ||
5638 pat_len < wowlan->pattern_min_len)
5639 goto error;
5640
5641 new_triggers.patterns[i].mask =
5642 kmalloc(mask_len + pat_len, GFP_KERNEL);
5643 if (!new_triggers.patterns[i].mask) {
5644 err = -ENOMEM;
5645 goto error;
5646 }
5647 new_triggers.patterns[i].pattern =
5648 new_triggers.patterns[i].mask + mask_len;
5649 memcpy(new_triggers.patterns[i].mask,
5650 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5651 mask_len);
5652 new_triggers.patterns[i].pattern_len = pat_len;
5653 memcpy(new_triggers.patterns[i].pattern,
5654 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5655 pat_len);
5656 i++;
5657 }
5658 }
5659
5660 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5661 struct cfg80211_wowlan *ntrig;
5662 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5663 GFP_KERNEL);
5664 if (!ntrig) {
5665 err = -ENOMEM;
5666 goto error;
5667 }
5668 cfg80211_rdev_free_wowlan(rdev);
5669 rdev->wowlan = ntrig;
5670 } else {
5671 no_triggers:
5672 cfg80211_rdev_free_wowlan(rdev);
5673 rdev->wowlan = NULL;
5674 }
5675
5676 return 0;
5677 error:
5678 for (i = 0; i < new_triggers.n_patterns; i++)
5679 kfree(new_triggers.patterns[i].mask);
5680 kfree(new_triggers.patterns);
5681 return err;
5682 }
5683
5684 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5685 {
5686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5687 struct net_device *dev = info->user_ptr[1];
5688 struct wireless_dev *wdev = dev->ieee80211_ptr;
5689 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5690 struct cfg80211_gtk_rekey_data rekey_data;
5691 int err;
5692
5693 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5694 return -EINVAL;
5695
5696 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5697 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5698 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5699 nl80211_rekey_policy);
5700 if (err)
5701 return err;
5702
5703 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5704 return -ERANGE;
5705 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5706 return -ERANGE;
5707 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5708 return -ERANGE;
5709
5710 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5711 NL80211_KEK_LEN);
5712 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5713 NL80211_KCK_LEN);
5714 memcpy(rekey_data.replay_ctr,
5715 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5716 NL80211_REPLAY_CTR_LEN);
5717
5718 wdev_lock(wdev);
5719 if (!wdev->current_bss) {
5720 err = -ENOTCONN;
5721 goto out;
5722 }
5723
5724 if (!rdev->ops->set_rekey_data) {
5725 err = -EOPNOTSUPP;
5726 goto out;
5727 }
5728
5729 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5730 out:
5731 wdev_unlock(wdev);
5732 return err;
5733 }
5734
5735 #define NL80211_FLAG_NEED_WIPHY 0x01
5736 #define NL80211_FLAG_NEED_NETDEV 0x02
5737 #define NL80211_FLAG_NEED_RTNL 0x04
5738 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5739 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5740 NL80211_FLAG_CHECK_NETDEV_UP)
5741
5742 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5743 struct genl_info *info)
5744 {
5745 struct cfg80211_registered_device *rdev;
5746 struct net_device *dev;
5747 int err;
5748 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5749
5750 if (rtnl)
5751 rtnl_lock();
5752
5753 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5754 rdev = cfg80211_get_dev_from_info(info);
5755 if (IS_ERR(rdev)) {
5756 if (rtnl)
5757 rtnl_unlock();
5758 return PTR_ERR(rdev);
5759 }
5760 info->user_ptr[0] = rdev;
5761 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5762 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5763 if (err) {
5764 if (rtnl)
5765 rtnl_unlock();
5766 return err;
5767 }
5768 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5769 !netif_running(dev)) {
5770 cfg80211_unlock_rdev(rdev);
5771 dev_put(dev);
5772 if (rtnl)
5773 rtnl_unlock();
5774 return -ENETDOWN;
5775 }
5776 info->user_ptr[0] = rdev;
5777 info->user_ptr[1] = dev;
5778 }
5779
5780 return 0;
5781 }
5782
5783 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5784 struct genl_info *info)
5785 {
5786 if (info->user_ptr[0])
5787 cfg80211_unlock_rdev(info->user_ptr[0]);
5788 if (info->user_ptr[1])
5789 dev_put(info->user_ptr[1]);
5790 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5791 rtnl_unlock();
5792 }
5793
5794 static struct genl_ops nl80211_ops[] = {
5795 {
5796 .cmd = NL80211_CMD_GET_WIPHY,
5797 .doit = nl80211_get_wiphy,
5798 .dumpit = nl80211_dump_wiphy,
5799 .policy = nl80211_policy,
5800 /* can be retrieved by unprivileged users */
5801 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5802 },
5803 {
5804 .cmd = NL80211_CMD_SET_WIPHY,
5805 .doit = nl80211_set_wiphy,
5806 .policy = nl80211_policy,
5807 .flags = GENL_ADMIN_PERM,
5808 .internal_flags = NL80211_FLAG_NEED_RTNL,
5809 },
5810 {
5811 .cmd = NL80211_CMD_GET_INTERFACE,
5812 .doit = nl80211_get_interface,
5813 .dumpit = nl80211_dump_interface,
5814 .policy = nl80211_policy,
5815 /* can be retrieved by unprivileged users */
5816 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5817 },
5818 {
5819 .cmd = NL80211_CMD_SET_INTERFACE,
5820 .doit = nl80211_set_interface,
5821 .policy = nl80211_policy,
5822 .flags = GENL_ADMIN_PERM,
5823 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5824 NL80211_FLAG_NEED_RTNL,
5825 },
5826 {
5827 .cmd = NL80211_CMD_NEW_INTERFACE,
5828 .doit = nl80211_new_interface,
5829 .policy = nl80211_policy,
5830 .flags = GENL_ADMIN_PERM,
5831 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5832 NL80211_FLAG_NEED_RTNL,
5833 },
5834 {
5835 .cmd = NL80211_CMD_DEL_INTERFACE,
5836 .doit = nl80211_del_interface,
5837 .policy = nl80211_policy,
5838 .flags = GENL_ADMIN_PERM,
5839 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5840 NL80211_FLAG_NEED_RTNL,
5841 },
5842 {
5843 .cmd = NL80211_CMD_GET_KEY,
5844 .doit = nl80211_get_key,
5845 .policy = nl80211_policy,
5846 .flags = GENL_ADMIN_PERM,
5847 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5848 NL80211_FLAG_NEED_RTNL,
5849 },
5850 {
5851 .cmd = NL80211_CMD_SET_KEY,
5852 .doit = nl80211_set_key,
5853 .policy = nl80211_policy,
5854 .flags = GENL_ADMIN_PERM,
5855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5856 NL80211_FLAG_NEED_RTNL,
5857 },
5858 {
5859 .cmd = NL80211_CMD_NEW_KEY,
5860 .doit = nl80211_new_key,
5861 .policy = nl80211_policy,
5862 .flags = GENL_ADMIN_PERM,
5863 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5864 NL80211_FLAG_NEED_RTNL,
5865 },
5866 {
5867 .cmd = NL80211_CMD_DEL_KEY,
5868 .doit = nl80211_del_key,
5869 .policy = nl80211_policy,
5870 .flags = GENL_ADMIN_PERM,
5871 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5872 NL80211_FLAG_NEED_RTNL,
5873 },
5874 {
5875 .cmd = NL80211_CMD_SET_BEACON,
5876 .policy = nl80211_policy,
5877 .flags = GENL_ADMIN_PERM,
5878 .doit = nl80211_addset_beacon,
5879 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5880 NL80211_FLAG_NEED_RTNL,
5881 },
5882 {
5883 .cmd = NL80211_CMD_NEW_BEACON,
5884 .policy = nl80211_policy,
5885 .flags = GENL_ADMIN_PERM,
5886 .doit = nl80211_addset_beacon,
5887 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5888 NL80211_FLAG_NEED_RTNL,
5889 },
5890 {
5891 .cmd = NL80211_CMD_DEL_BEACON,
5892 .policy = nl80211_policy,
5893 .flags = GENL_ADMIN_PERM,
5894 .doit = nl80211_del_beacon,
5895 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5896 NL80211_FLAG_NEED_RTNL,
5897 },
5898 {
5899 .cmd = NL80211_CMD_GET_STATION,
5900 .doit = nl80211_get_station,
5901 .dumpit = nl80211_dump_station,
5902 .policy = nl80211_policy,
5903 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5904 NL80211_FLAG_NEED_RTNL,
5905 },
5906 {
5907 .cmd = NL80211_CMD_SET_STATION,
5908 .doit = nl80211_set_station,
5909 .policy = nl80211_policy,
5910 .flags = GENL_ADMIN_PERM,
5911 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5912 NL80211_FLAG_NEED_RTNL,
5913 },
5914 {
5915 .cmd = NL80211_CMD_NEW_STATION,
5916 .doit = nl80211_new_station,
5917 .policy = nl80211_policy,
5918 .flags = GENL_ADMIN_PERM,
5919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5920 NL80211_FLAG_NEED_RTNL,
5921 },
5922 {
5923 .cmd = NL80211_CMD_DEL_STATION,
5924 .doit = nl80211_del_station,
5925 .policy = nl80211_policy,
5926 .flags = GENL_ADMIN_PERM,
5927 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5928 NL80211_FLAG_NEED_RTNL,
5929 },
5930 {
5931 .cmd = NL80211_CMD_GET_MPATH,
5932 .doit = nl80211_get_mpath,
5933 .dumpit = nl80211_dump_mpath,
5934 .policy = nl80211_policy,
5935 .flags = GENL_ADMIN_PERM,
5936 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5937 NL80211_FLAG_NEED_RTNL,
5938 },
5939 {
5940 .cmd = NL80211_CMD_SET_MPATH,
5941 .doit = nl80211_set_mpath,
5942 .policy = nl80211_policy,
5943 .flags = GENL_ADMIN_PERM,
5944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5945 NL80211_FLAG_NEED_RTNL,
5946 },
5947 {
5948 .cmd = NL80211_CMD_NEW_MPATH,
5949 .doit = nl80211_new_mpath,
5950 .policy = nl80211_policy,
5951 .flags = GENL_ADMIN_PERM,
5952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5953 NL80211_FLAG_NEED_RTNL,
5954 },
5955 {
5956 .cmd = NL80211_CMD_DEL_MPATH,
5957 .doit = nl80211_del_mpath,
5958 .policy = nl80211_policy,
5959 .flags = GENL_ADMIN_PERM,
5960 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5961 NL80211_FLAG_NEED_RTNL,
5962 },
5963 {
5964 .cmd = NL80211_CMD_SET_BSS,
5965 .doit = nl80211_set_bss,
5966 .policy = nl80211_policy,
5967 .flags = GENL_ADMIN_PERM,
5968 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5969 NL80211_FLAG_NEED_RTNL,
5970 },
5971 {
5972 .cmd = NL80211_CMD_GET_REG,
5973 .doit = nl80211_get_reg,
5974 .policy = nl80211_policy,
5975 /* can be retrieved by unprivileged users */
5976 },
5977 {
5978 .cmd = NL80211_CMD_SET_REG,
5979 .doit = nl80211_set_reg,
5980 .policy = nl80211_policy,
5981 .flags = GENL_ADMIN_PERM,
5982 },
5983 {
5984 .cmd = NL80211_CMD_REQ_SET_REG,
5985 .doit = nl80211_req_set_reg,
5986 .policy = nl80211_policy,
5987 .flags = GENL_ADMIN_PERM,
5988 },
5989 {
5990 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5991 .doit = nl80211_get_mesh_config,
5992 .policy = nl80211_policy,
5993 /* can be retrieved by unprivileged users */
5994 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5995 NL80211_FLAG_NEED_RTNL,
5996 },
5997 {
5998 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5999 .doit = nl80211_update_mesh_config,
6000 .policy = nl80211_policy,
6001 .flags = GENL_ADMIN_PERM,
6002 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6003 NL80211_FLAG_NEED_RTNL,
6004 },
6005 {
6006 .cmd = NL80211_CMD_TRIGGER_SCAN,
6007 .doit = nl80211_trigger_scan,
6008 .policy = nl80211_policy,
6009 .flags = GENL_ADMIN_PERM,
6010 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6011 NL80211_FLAG_NEED_RTNL,
6012 },
6013 {
6014 .cmd = NL80211_CMD_GET_SCAN,
6015 .policy = nl80211_policy,
6016 .dumpit = nl80211_dump_scan,
6017 },
6018 {
6019 .cmd = NL80211_CMD_START_SCHED_SCAN,
6020 .doit = nl80211_start_sched_scan,
6021 .policy = nl80211_policy,
6022 .flags = GENL_ADMIN_PERM,
6023 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6024 NL80211_FLAG_NEED_RTNL,
6025 },
6026 {
6027 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6028 .doit = nl80211_stop_sched_scan,
6029 .policy = nl80211_policy,
6030 .flags = GENL_ADMIN_PERM,
6031 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6032 NL80211_FLAG_NEED_RTNL,
6033 },
6034 {
6035 .cmd = NL80211_CMD_AUTHENTICATE,
6036 .doit = nl80211_authenticate,
6037 .policy = nl80211_policy,
6038 .flags = GENL_ADMIN_PERM,
6039 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6040 NL80211_FLAG_NEED_RTNL,
6041 },
6042 {
6043 .cmd = NL80211_CMD_ASSOCIATE,
6044 .doit = nl80211_associate,
6045 .policy = nl80211_policy,
6046 .flags = GENL_ADMIN_PERM,
6047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6048 NL80211_FLAG_NEED_RTNL,
6049 },
6050 {
6051 .cmd = NL80211_CMD_DEAUTHENTICATE,
6052 .doit = nl80211_deauthenticate,
6053 .policy = nl80211_policy,
6054 .flags = GENL_ADMIN_PERM,
6055 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6056 NL80211_FLAG_NEED_RTNL,
6057 },
6058 {
6059 .cmd = NL80211_CMD_DISASSOCIATE,
6060 .doit = nl80211_disassociate,
6061 .policy = nl80211_policy,
6062 .flags = GENL_ADMIN_PERM,
6063 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6064 NL80211_FLAG_NEED_RTNL,
6065 },
6066 {
6067 .cmd = NL80211_CMD_JOIN_IBSS,
6068 .doit = nl80211_join_ibss,
6069 .policy = nl80211_policy,
6070 .flags = GENL_ADMIN_PERM,
6071 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6072 NL80211_FLAG_NEED_RTNL,
6073 },
6074 {
6075 .cmd = NL80211_CMD_LEAVE_IBSS,
6076 .doit = nl80211_leave_ibss,
6077 .policy = nl80211_policy,
6078 .flags = GENL_ADMIN_PERM,
6079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6080 NL80211_FLAG_NEED_RTNL,
6081 },
6082 #ifdef CONFIG_NL80211_TESTMODE
6083 {
6084 .cmd = NL80211_CMD_TESTMODE,
6085 .doit = nl80211_testmode_do,
6086 .dumpit = nl80211_testmode_dump,
6087 .policy = nl80211_policy,
6088 .flags = GENL_ADMIN_PERM,
6089 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6090 NL80211_FLAG_NEED_RTNL,
6091 },
6092 #endif
6093 {
6094 .cmd = NL80211_CMD_CONNECT,
6095 .doit = nl80211_connect,
6096 .policy = nl80211_policy,
6097 .flags = GENL_ADMIN_PERM,
6098 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6099 NL80211_FLAG_NEED_RTNL,
6100 },
6101 {
6102 .cmd = NL80211_CMD_DISCONNECT,
6103 .doit = nl80211_disconnect,
6104 .policy = nl80211_policy,
6105 .flags = GENL_ADMIN_PERM,
6106 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6107 NL80211_FLAG_NEED_RTNL,
6108 },
6109 {
6110 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6111 .doit = nl80211_wiphy_netns,
6112 .policy = nl80211_policy,
6113 .flags = GENL_ADMIN_PERM,
6114 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6115 NL80211_FLAG_NEED_RTNL,
6116 },
6117 {
6118 .cmd = NL80211_CMD_GET_SURVEY,
6119 .policy = nl80211_policy,
6120 .dumpit = nl80211_dump_survey,
6121 },
6122 {
6123 .cmd = NL80211_CMD_SET_PMKSA,
6124 .doit = nl80211_setdel_pmksa,
6125 .policy = nl80211_policy,
6126 .flags = GENL_ADMIN_PERM,
6127 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6128 NL80211_FLAG_NEED_RTNL,
6129 },
6130 {
6131 .cmd = NL80211_CMD_DEL_PMKSA,
6132 .doit = nl80211_setdel_pmksa,
6133 .policy = nl80211_policy,
6134 .flags = GENL_ADMIN_PERM,
6135 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6136 NL80211_FLAG_NEED_RTNL,
6137 },
6138 {
6139 .cmd = NL80211_CMD_FLUSH_PMKSA,
6140 .doit = nl80211_flush_pmksa,
6141 .policy = nl80211_policy,
6142 .flags = GENL_ADMIN_PERM,
6143 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6144 NL80211_FLAG_NEED_RTNL,
6145 },
6146 {
6147 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6148 .doit = nl80211_remain_on_channel,
6149 .policy = nl80211_policy,
6150 .flags = GENL_ADMIN_PERM,
6151 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6152 NL80211_FLAG_NEED_RTNL,
6153 },
6154 {
6155 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6156 .doit = nl80211_cancel_remain_on_channel,
6157 .policy = nl80211_policy,
6158 .flags = GENL_ADMIN_PERM,
6159 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6160 NL80211_FLAG_NEED_RTNL,
6161 },
6162 {
6163 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6164 .doit = nl80211_set_tx_bitrate_mask,
6165 .policy = nl80211_policy,
6166 .flags = GENL_ADMIN_PERM,
6167 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6168 NL80211_FLAG_NEED_RTNL,
6169 },
6170 {
6171 .cmd = NL80211_CMD_REGISTER_FRAME,
6172 .doit = nl80211_register_mgmt,
6173 .policy = nl80211_policy,
6174 .flags = GENL_ADMIN_PERM,
6175 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6176 NL80211_FLAG_NEED_RTNL,
6177 },
6178 {
6179 .cmd = NL80211_CMD_FRAME,
6180 .doit = nl80211_tx_mgmt,
6181 .policy = nl80211_policy,
6182 .flags = GENL_ADMIN_PERM,
6183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6184 NL80211_FLAG_NEED_RTNL,
6185 },
6186 {
6187 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6188 .doit = nl80211_tx_mgmt_cancel_wait,
6189 .policy = nl80211_policy,
6190 .flags = GENL_ADMIN_PERM,
6191 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6192 NL80211_FLAG_NEED_RTNL,
6193 },
6194 {
6195 .cmd = NL80211_CMD_SET_POWER_SAVE,
6196 .doit = nl80211_set_power_save,
6197 .policy = nl80211_policy,
6198 .flags = GENL_ADMIN_PERM,
6199 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6200 NL80211_FLAG_NEED_RTNL,
6201 },
6202 {
6203 .cmd = NL80211_CMD_GET_POWER_SAVE,
6204 .doit = nl80211_get_power_save,
6205 .policy = nl80211_policy,
6206 /* can be retrieved by unprivileged users */
6207 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6208 NL80211_FLAG_NEED_RTNL,
6209 },
6210 {
6211 .cmd = NL80211_CMD_SET_CQM,
6212 .doit = nl80211_set_cqm,
6213 .policy = nl80211_policy,
6214 .flags = GENL_ADMIN_PERM,
6215 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6216 NL80211_FLAG_NEED_RTNL,
6217 },
6218 {
6219 .cmd = NL80211_CMD_SET_CHANNEL,
6220 .doit = nl80211_set_channel,
6221 .policy = nl80211_policy,
6222 .flags = GENL_ADMIN_PERM,
6223 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6224 NL80211_FLAG_NEED_RTNL,
6225 },
6226 {
6227 .cmd = NL80211_CMD_SET_WDS_PEER,
6228 .doit = nl80211_set_wds_peer,
6229 .policy = nl80211_policy,
6230 .flags = GENL_ADMIN_PERM,
6231 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6232 NL80211_FLAG_NEED_RTNL,
6233 },
6234 {
6235 .cmd = NL80211_CMD_JOIN_MESH,
6236 .doit = nl80211_join_mesh,
6237 .policy = nl80211_policy,
6238 .flags = GENL_ADMIN_PERM,
6239 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6240 NL80211_FLAG_NEED_RTNL,
6241 },
6242 {
6243 .cmd = NL80211_CMD_LEAVE_MESH,
6244 .doit = nl80211_leave_mesh,
6245 .policy = nl80211_policy,
6246 .flags = GENL_ADMIN_PERM,
6247 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6248 NL80211_FLAG_NEED_RTNL,
6249 },
6250 {
6251 .cmd = NL80211_CMD_GET_WOWLAN,
6252 .doit = nl80211_get_wowlan,
6253 .policy = nl80211_policy,
6254 /* can be retrieved by unprivileged users */
6255 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6256 NL80211_FLAG_NEED_RTNL,
6257 },
6258 {
6259 .cmd = NL80211_CMD_SET_WOWLAN,
6260 .doit = nl80211_set_wowlan,
6261 .policy = nl80211_policy,
6262 .flags = GENL_ADMIN_PERM,
6263 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6264 NL80211_FLAG_NEED_RTNL,
6265 },
6266 {
6267 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6268 .doit = nl80211_set_rekey_data,
6269 .policy = nl80211_policy,
6270 .flags = GENL_ADMIN_PERM,
6271 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6272 NL80211_FLAG_NEED_RTNL,
6273 },
6274 };
6275
6276 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6277 .name = "mlme",
6278 };
6279
6280 /* multicast groups */
6281 static struct genl_multicast_group nl80211_config_mcgrp = {
6282 .name = "config",
6283 };
6284 static struct genl_multicast_group nl80211_scan_mcgrp = {
6285 .name = "scan",
6286 };
6287 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6288 .name = "regulatory",
6289 };
6290
6291 /* notification functions */
6292
6293 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6294 {
6295 struct sk_buff *msg;
6296
6297 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6298 if (!msg)
6299 return;
6300
6301 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6302 nlmsg_free(msg);
6303 return;
6304 }
6305
6306 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6307 nl80211_config_mcgrp.id, GFP_KERNEL);
6308 }
6309
6310 static int nl80211_add_scan_req(struct sk_buff *msg,
6311 struct cfg80211_registered_device *rdev)
6312 {
6313 struct cfg80211_scan_request *req = rdev->scan_req;
6314 struct nlattr *nest;
6315 int i;
6316
6317 ASSERT_RDEV_LOCK(rdev);
6318
6319 if (WARN_ON(!req))
6320 return 0;
6321
6322 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6323 if (!nest)
6324 goto nla_put_failure;
6325 for (i = 0; i < req->n_ssids; i++)
6326 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6327 nla_nest_end(msg, nest);
6328
6329 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6330 if (!nest)
6331 goto nla_put_failure;
6332 for (i = 0; i < req->n_channels; i++)
6333 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6334 nla_nest_end(msg, nest);
6335
6336 if (req->ie)
6337 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6338
6339 return 0;
6340 nla_put_failure:
6341 return -ENOBUFS;
6342 }
6343
6344 static int nl80211_send_scan_msg(struct sk_buff *msg,
6345 struct cfg80211_registered_device *rdev,
6346 struct net_device *netdev,
6347 u32 pid, u32 seq, int flags,
6348 u32 cmd)
6349 {
6350 void *hdr;
6351
6352 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6353 if (!hdr)
6354 return -1;
6355
6356 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6357 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6358
6359 /* ignore errors and send incomplete event anyway */
6360 nl80211_add_scan_req(msg, rdev);
6361
6362 return genlmsg_end(msg, hdr);
6363
6364 nla_put_failure:
6365 genlmsg_cancel(msg, hdr);
6366 return -EMSGSIZE;
6367 }
6368
6369 static int
6370 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6371 struct cfg80211_registered_device *rdev,
6372 struct net_device *netdev,
6373 u32 pid, u32 seq, int flags, u32 cmd)
6374 {
6375 void *hdr;
6376
6377 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6378 if (!hdr)
6379 return -1;
6380
6381 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6382 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6383
6384 return genlmsg_end(msg, hdr);
6385
6386 nla_put_failure:
6387 genlmsg_cancel(msg, hdr);
6388 return -EMSGSIZE;
6389 }
6390
6391 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6392 struct net_device *netdev)
6393 {
6394 struct sk_buff *msg;
6395
6396 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6397 if (!msg)
6398 return;
6399
6400 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6401 NL80211_CMD_TRIGGER_SCAN) < 0) {
6402 nlmsg_free(msg);
6403 return;
6404 }
6405
6406 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6407 nl80211_scan_mcgrp.id, GFP_KERNEL);
6408 }
6409
6410 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6411 struct net_device *netdev)
6412 {
6413 struct sk_buff *msg;
6414
6415 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6416 if (!msg)
6417 return;
6418
6419 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6420 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6421 nlmsg_free(msg);
6422 return;
6423 }
6424
6425 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6426 nl80211_scan_mcgrp.id, GFP_KERNEL);
6427 }
6428
6429 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6430 struct net_device *netdev)
6431 {
6432 struct sk_buff *msg;
6433
6434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6435 if (!msg)
6436 return;
6437
6438 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6439 NL80211_CMD_SCAN_ABORTED) < 0) {
6440 nlmsg_free(msg);
6441 return;
6442 }
6443
6444 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6445 nl80211_scan_mcgrp.id, GFP_KERNEL);
6446 }
6447
6448 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6449 struct net_device *netdev)
6450 {
6451 struct sk_buff *msg;
6452
6453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6454 if (!msg)
6455 return;
6456
6457 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6458 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6459 nlmsg_free(msg);
6460 return;
6461 }
6462
6463 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6464 nl80211_scan_mcgrp.id, GFP_KERNEL);
6465 }
6466
6467 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6468 struct net_device *netdev, u32 cmd)
6469 {
6470 struct sk_buff *msg;
6471
6472 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6473 if (!msg)
6474 return;
6475
6476 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6477 nlmsg_free(msg);
6478 return;
6479 }
6480
6481 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6482 nl80211_scan_mcgrp.id, GFP_KERNEL);
6483 }
6484
6485 /*
6486 * This can happen on global regulatory changes or device specific settings
6487 * based on custom world regulatory domains.
6488 */
6489 void nl80211_send_reg_change_event(struct regulatory_request *request)
6490 {
6491 struct sk_buff *msg;
6492 void *hdr;
6493
6494 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6495 if (!msg)
6496 return;
6497
6498 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6499 if (!hdr) {
6500 nlmsg_free(msg);
6501 return;
6502 }
6503
6504 /* Userspace can always count this one always being set */
6505 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6506
6507 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6508 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6509 NL80211_REGDOM_TYPE_WORLD);
6510 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6511 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6512 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6513 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6514 request->intersect)
6515 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6516 NL80211_REGDOM_TYPE_INTERSECTION);
6517 else {
6518 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6519 NL80211_REGDOM_TYPE_COUNTRY);
6520 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6521 }
6522
6523 if (wiphy_idx_valid(request->wiphy_idx))
6524 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6525
6526 if (genlmsg_end(msg, hdr) < 0) {
6527 nlmsg_free(msg);
6528 return;
6529 }
6530
6531 rcu_read_lock();
6532 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6533 GFP_ATOMIC);
6534 rcu_read_unlock();
6535
6536 return;
6537
6538 nla_put_failure:
6539 genlmsg_cancel(msg, hdr);
6540 nlmsg_free(msg);
6541 }
6542
6543 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6544 struct net_device *netdev,
6545 const u8 *buf, size_t len,
6546 enum nl80211_commands cmd, gfp_t gfp)
6547 {
6548 struct sk_buff *msg;
6549 void *hdr;
6550
6551 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6552 if (!msg)
6553 return;
6554
6555 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6556 if (!hdr) {
6557 nlmsg_free(msg);
6558 return;
6559 }
6560
6561 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6562 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6563 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6564
6565 if (genlmsg_end(msg, hdr) < 0) {
6566 nlmsg_free(msg);
6567 return;
6568 }
6569
6570 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6571 nl80211_mlme_mcgrp.id, gfp);
6572 return;
6573
6574 nla_put_failure:
6575 genlmsg_cancel(msg, hdr);
6576 nlmsg_free(msg);
6577 }
6578
6579 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6580 struct net_device *netdev, const u8 *buf,
6581 size_t len, gfp_t gfp)
6582 {
6583 nl80211_send_mlme_event(rdev, netdev, buf, len,
6584 NL80211_CMD_AUTHENTICATE, gfp);
6585 }
6586
6587 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6588 struct net_device *netdev, const u8 *buf,
6589 size_t len, gfp_t gfp)
6590 {
6591 nl80211_send_mlme_event(rdev, netdev, buf, len,
6592 NL80211_CMD_ASSOCIATE, gfp);
6593 }
6594
6595 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6596 struct net_device *netdev, const u8 *buf,
6597 size_t len, gfp_t gfp)
6598 {
6599 nl80211_send_mlme_event(rdev, netdev, buf, len,
6600 NL80211_CMD_DEAUTHENTICATE, gfp);
6601 }
6602
6603 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6604 struct net_device *netdev, const u8 *buf,
6605 size_t len, gfp_t gfp)
6606 {
6607 nl80211_send_mlme_event(rdev, netdev, buf, len,
6608 NL80211_CMD_DISASSOCIATE, gfp);
6609 }
6610
6611 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6612 struct net_device *netdev, const u8 *buf,
6613 size_t len, gfp_t gfp)
6614 {
6615 nl80211_send_mlme_event(rdev, netdev, buf, len,
6616 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6617 }
6618
6619 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6620 struct net_device *netdev, const u8 *buf,
6621 size_t len, gfp_t gfp)
6622 {
6623 nl80211_send_mlme_event(rdev, netdev, buf, len,
6624 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6625 }
6626
6627 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6628 struct net_device *netdev, int cmd,
6629 const u8 *addr, gfp_t gfp)
6630 {
6631 struct sk_buff *msg;
6632 void *hdr;
6633
6634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6635 if (!msg)
6636 return;
6637
6638 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6639 if (!hdr) {
6640 nlmsg_free(msg);
6641 return;
6642 }
6643
6644 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6645 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6646 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6647 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6648
6649 if (genlmsg_end(msg, hdr) < 0) {
6650 nlmsg_free(msg);
6651 return;
6652 }
6653
6654 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6655 nl80211_mlme_mcgrp.id, gfp);
6656 return;
6657
6658 nla_put_failure:
6659 genlmsg_cancel(msg, hdr);
6660 nlmsg_free(msg);
6661 }
6662
6663 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6664 struct net_device *netdev, const u8 *addr,
6665 gfp_t gfp)
6666 {
6667 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6668 addr, gfp);
6669 }
6670
6671 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6672 struct net_device *netdev, const u8 *addr,
6673 gfp_t gfp)
6674 {
6675 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6676 addr, gfp);
6677 }
6678
6679 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6680 struct net_device *netdev, const u8 *bssid,
6681 const u8 *req_ie, size_t req_ie_len,
6682 const u8 *resp_ie, size_t resp_ie_len,
6683 u16 status, gfp_t gfp)
6684 {
6685 struct sk_buff *msg;
6686 void *hdr;
6687
6688 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6689 if (!msg)
6690 return;
6691
6692 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6693 if (!hdr) {
6694 nlmsg_free(msg);
6695 return;
6696 }
6697
6698 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6699 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6700 if (bssid)
6701 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6702 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6703 if (req_ie)
6704 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6705 if (resp_ie)
6706 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6707
6708 if (genlmsg_end(msg, hdr) < 0) {
6709 nlmsg_free(msg);
6710 return;
6711 }
6712
6713 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6714 nl80211_mlme_mcgrp.id, gfp);
6715 return;
6716
6717 nla_put_failure:
6718 genlmsg_cancel(msg, hdr);
6719 nlmsg_free(msg);
6720
6721 }
6722
6723 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6724 struct net_device *netdev, const u8 *bssid,
6725 const u8 *req_ie, size_t req_ie_len,
6726 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6727 {
6728 struct sk_buff *msg;
6729 void *hdr;
6730
6731 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6732 if (!msg)
6733 return;
6734
6735 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6736 if (!hdr) {
6737 nlmsg_free(msg);
6738 return;
6739 }
6740
6741 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6742 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6743 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6744 if (req_ie)
6745 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6746 if (resp_ie)
6747 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6748
6749 if (genlmsg_end(msg, hdr) < 0) {
6750 nlmsg_free(msg);
6751 return;
6752 }
6753
6754 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6755 nl80211_mlme_mcgrp.id, gfp);
6756 return;
6757
6758 nla_put_failure:
6759 genlmsg_cancel(msg, hdr);
6760 nlmsg_free(msg);
6761
6762 }
6763
6764 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6765 struct net_device *netdev, u16 reason,
6766 const u8 *ie, size_t ie_len, bool from_ap)
6767 {
6768 struct sk_buff *msg;
6769 void *hdr;
6770
6771 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6772 if (!msg)
6773 return;
6774
6775 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6776 if (!hdr) {
6777 nlmsg_free(msg);
6778 return;
6779 }
6780
6781 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6782 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6783 if (from_ap && reason)
6784 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6785 if (from_ap)
6786 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6787 if (ie)
6788 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6789
6790 if (genlmsg_end(msg, hdr) < 0) {
6791 nlmsg_free(msg);
6792 return;
6793 }
6794
6795 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6796 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6797 return;
6798
6799 nla_put_failure:
6800 genlmsg_cancel(msg, hdr);
6801 nlmsg_free(msg);
6802
6803 }
6804
6805 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6806 struct net_device *netdev, const u8 *bssid,
6807 gfp_t gfp)
6808 {
6809 struct sk_buff *msg;
6810 void *hdr;
6811
6812 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6813 if (!msg)
6814 return;
6815
6816 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6817 if (!hdr) {
6818 nlmsg_free(msg);
6819 return;
6820 }
6821
6822 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6823 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6824 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6825
6826 if (genlmsg_end(msg, hdr) < 0) {
6827 nlmsg_free(msg);
6828 return;
6829 }
6830
6831 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6832 nl80211_mlme_mcgrp.id, gfp);
6833 return;
6834
6835 nla_put_failure:
6836 genlmsg_cancel(msg, hdr);
6837 nlmsg_free(msg);
6838 }
6839
6840 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6841 struct net_device *netdev,
6842 const u8 *macaddr, const u8* ie, u8 ie_len,
6843 gfp_t gfp)
6844 {
6845 struct sk_buff *msg;
6846 void *hdr;
6847
6848 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6849 if (!msg)
6850 return;
6851
6852 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6853 if (!hdr) {
6854 nlmsg_free(msg);
6855 return;
6856 }
6857
6858 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6860 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6861 if (ie_len && ie)
6862 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6863
6864 if (genlmsg_end(msg, hdr) < 0) {
6865 nlmsg_free(msg);
6866 return;
6867 }
6868
6869 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6870 nl80211_mlme_mcgrp.id, gfp);
6871 return;
6872
6873 nla_put_failure:
6874 genlmsg_cancel(msg, hdr);
6875 nlmsg_free(msg);
6876 }
6877
6878 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6879 struct net_device *netdev, const u8 *addr,
6880 enum nl80211_key_type key_type, int key_id,
6881 const u8 *tsc, gfp_t gfp)
6882 {
6883 struct sk_buff *msg;
6884 void *hdr;
6885
6886 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6887 if (!msg)
6888 return;
6889
6890 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6891 if (!hdr) {
6892 nlmsg_free(msg);
6893 return;
6894 }
6895
6896 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6897 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6898 if (addr)
6899 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6900 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6901 if (key_id != -1)
6902 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6903 if (tsc)
6904 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6905
6906 if (genlmsg_end(msg, hdr) < 0) {
6907 nlmsg_free(msg);
6908 return;
6909 }
6910
6911 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6912 nl80211_mlme_mcgrp.id, gfp);
6913 return;
6914
6915 nla_put_failure:
6916 genlmsg_cancel(msg, hdr);
6917 nlmsg_free(msg);
6918 }
6919
6920 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6921 struct ieee80211_channel *channel_before,
6922 struct ieee80211_channel *channel_after)
6923 {
6924 struct sk_buff *msg;
6925 void *hdr;
6926 struct nlattr *nl_freq;
6927
6928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6929 if (!msg)
6930 return;
6931
6932 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6933 if (!hdr) {
6934 nlmsg_free(msg);
6935 return;
6936 }
6937
6938 /*
6939 * Since we are applying the beacon hint to a wiphy we know its
6940 * wiphy_idx is valid
6941 */
6942 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6943
6944 /* Before */
6945 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6946 if (!nl_freq)
6947 goto nla_put_failure;
6948 if (nl80211_msg_put_channel(msg, channel_before))
6949 goto nla_put_failure;
6950 nla_nest_end(msg, nl_freq);
6951
6952 /* After */
6953 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6954 if (!nl_freq)
6955 goto nla_put_failure;
6956 if (nl80211_msg_put_channel(msg, channel_after))
6957 goto nla_put_failure;
6958 nla_nest_end(msg, nl_freq);
6959
6960 if (genlmsg_end(msg, hdr) < 0) {
6961 nlmsg_free(msg);
6962 return;
6963 }
6964
6965 rcu_read_lock();
6966 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6967 GFP_ATOMIC);
6968 rcu_read_unlock();
6969
6970 return;
6971
6972 nla_put_failure:
6973 genlmsg_cancel(msg, hdr);
6974 nlmsg_free(msg);
6975 }
6976
6977 static void nl80211_send_remain_on_chan_event(
6978 int cmd, struct cfg80211_registered_device *rdev,
6979 struct net_device *netdev, u64 cookie,
6980 struct ieee80211_channel *chan,
6981 enum nl80211_channel_type channel_type,
6982 unsigned int duration, gfp_t gfp)
6983 {
6984 struct sk_buff *msg;
6985 void *hdr;
6986
6987 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6988 if (!msg)
6989 return;
6990
6991 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6992 if (!hdr) {
6993 nlmsg_free(msg);
6994 return;
6995 }
6996
6997 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6998 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6999 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7000 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7001 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7002
7003 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7004 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7005
7006 if (genlmsg_end(msg, hdr) < 0) {
7007 nlmsg_free(msg);
7008 return;
7009 }
7010
7011 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7012 nl80211_mlme_mcgrp.id, gfp);
7013 return;
7014
7015 nla_put_failure:
7016 genlmsg_cancel(msg, hdr);
7017 nlmsg_free(msg);
7018 }
7019
7020 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7021 struct net_device *netdev, u64 cookie,
7022 struct ieee80211_channel *chan,
7023 enum nl80211_channel_type channel_type,
7024 unsigned int duration, gfp_t gfp)
7025 {
7026 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7027 rdev, netdev, cookie, chan,
7028 channel_type, duration, gfp);
7029 }
7030
7031 void nl80211_send_remain_on_channel_cancel(
7032 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7033 u64 cookie, struct ieee80211_channel *chan,
7034 enum nl80211_channel_type channel_type, gfp_t gfp)
7035 {
7036 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7037 rdev, netdev, cookie, chan,
7038 channel_type, 0, gfp);
7039 }
7040
7041 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7042 struct net_device *dev, const u8 *mac_addr,
7043 struct station_info *sinfo, gfp_t gfp)
7044 {
7045 struct sk_buff *msg;
7046
7047 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7048 if (!msg)
7049 return;
7050
7051 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7052 nlmsg_free(msg);
7053 return;
7054 }
7055
7056 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7057 nl80211_mlme_mcgrp.id, gfp);
7058 }
7059
7060 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7061 struct net_device *dev, const u8 *mac_addr,
7062 gfp_t gfp)
7063 {
7064 struct sk_buff *msg;
7065 void *hdr;
7066
7067 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7068 if (!msg)
7069 return;
7070
7071 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7072 if (!hdr) {
7073 nlmsg_free(msg);
7074 return;
7075 }
7076
7077 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7078 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7079
7080 if (genlmsg_end(msg, hdr) < 0) {
7081 nlmsg_free(msg);
7082 return;
7083 }
7084
7085 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7086 nl80211_mlme_mcgrp.id, gfp);
7087 return;
7088
7089 nla_put_failure:
7090 genlmsg_cancel(msg, hdr);
7091 nlmsg_free(msg);
7092 }
7093
7094 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7095 struct net_device *netdev, u32 nlpid,
7096 int freq, const u8 *buf, size_t len, gfp_t gfp)
7097 {
7098 struct sk_buff *msg;
7099 void *hdr;
7100 int err;
7101
7102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7103 if (!msg)
7104 return -ENOMEM;
7105
7106 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7107 if (!hdr) {
7108 nlmsg_free(msg);
7109 return -ENOMEM;
7110 }
7111
7112 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7113 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7114 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7115 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7116
7117 err = genlmsg_end(msg, hdr);
7118 if (err < 0) {
7119 nlmsg_free(msg);
7120 return err;
7121 }
7122
7123 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7124 if (err < 0)
7125 return err;
7126 return 0;
7127
7128 nla_put_failure:
7129 genlmsg_cancel(msg, hdr);
7130 nlmsg_free(msg);
7131 return -ENOBUFS;
7132 }
7133
7134 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7135 struct net_device *netdev, u64 cookie,
7136 const u8 *buf, size_t len, bool ack,
7137 gfp_t gfp)
7138 {
7139 struct sk_buff *msg;
7140 void *hdr;
7141
7142 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7143 if (!msg)
7144 return;
7145
7146 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7147 if (!hdr) {
7148 nlmsg_free(msg);
7149 return;
7150 }
7151
7152 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7153 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7154 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7155 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7156 if (ack)
7157 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7158
7159 if (genlmsg_end(msg, hdr) < 0) {
7160 nlmsg_free(msg);
7161 return;
7162 }
7163
7164 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7165 return;
7166
7167 nla_put_failure:
7168 genlmsg_cancel(msg, hdr);
7169 nlmsg_free(msg);
7170 }
7171
7172 void
7173 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7174 struct net_device *netdev,
7175 enum nl80211_cqm_rssi_threshold_event rssi_event,
7176 gfp_t gfp)
7177 {
7178 struct sk_buff *msg;
7179 struct nlattr *pinfoattr;
7180 void *hdr;
7181
7182 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7183 if (!msg)
7184 return;
7185
7186 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7187 if (!hdr) {
7188 nlmsg_free(msg);
7189 return;
7190 }
7191
7192 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7193 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7194
7195 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7196 if (!pinfoattr)
7197 goto nla_put_failure;
7198
7199 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7200 rssi_event);
7201
7202 nla_nest_end(msg, pinfoattr);
7203
7204 if (genlmsg_end(msg, hdr) < 0) {
7205 nlmsg_free(msg);
7206 return;
7207 }
7208
7209 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7210 nl80211_mlme_mcgrp.id, gfp);
7211 return;
7212
7213 nla_put_failure:
7214 genlmsg_cancel(msg, hdr);
7215 nlmsg_free(msg);
7216 }
7217
7218 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7219 struct net_device *netdev, const u8 *bssid,
7220 const u8 *replay_ctr, gfp_t gfp)
7221 {
7222 struct sk_buff *msg;
7223 struct nlattr *rekey_attr;
7224 void *hdr;
7225
7226 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7227 if (!msg)
7228 return;
7229
7230 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7231 if (!hdr) {
7232 nlmsg_free(msg);
7233 return;
7234 }
7235
7236 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7237 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7238 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7239
7240 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7241 if (!rekey_attr)
7242 goto nla_put_failure;
7243
7244 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7245 NL80211_REPLAY_CTR_LEN, replay_ctr);
7246
7247 nla_nest_end(msg, rekey_attr);
7248
7249 if (genlmsg_end(msg, hdr) < 0) {
7250 nlmsg_free(msg);
7251 return;
7252 }
7253
7254 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7255 nl80211_mlme_mcgrp.id, gfp);
7256 return;
7257
7258 nla_put_failure:
7259 genlmsg_cancel(msg, hdr);
7260 nlmsg_free(msg);
7261 }
7262
7263 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7264 struct net_device *netdev, int index,
7265 const u8 *bssid, bool preauth, gfp_t gfp)
7266 {
7267 struct sk_buff *msg;
7268 struct nlattr *attr;
7269 void *hdr;
7270
7271 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7272 if (!msg)
7273 return;
7274
7275 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7276 if (!hdr) {
7277 nlmsg_free(msg);
7278 return;
7279 }
7280
7281 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7282 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7283
7284 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7285 if (!attr)
7286 goto nla_put_failure;
7287
7288 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7289 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7290 if (preauth)
7291 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7292
7293 nla_nest_end(msg, attr);
7294
7295 if (genlmsg_end(msg, hdr) < 0) {
7296 nlmsg_free(msg);
7297 return;
7298 }
7299
7300 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7301 nl80211_mlme_mcgrp.id, gfp);
7302 return;
7303
7304 nla_put_failure:
7305 genlmsg_cancel(msg, hdr);
7306 nlmsg_free(msg);
7307 }
7308
7309 void
7310 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7311 struct net_device *netdev, const u8 *peer,
7312 u32 num_packets, gfp_t gfp)
7313 {
7314 struct sk_buff *msg;
7315 struct nlattr *pinfoattr;
7316 void *hdr;
7317
7318 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7319 if (!msg)
7320 return;
7321
7322 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7323 if (!hdr) {
7324 nlmsg_free(msg);
7325 return;
7326 }
7327
7328 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7329 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7330 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7331
7332 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7333 if (!pinfoattr)
7334 goto nla_put_failure;
7335
7336 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7337
7338 nla_nest_end(msg, pinfoattr);
7339
7340 if (genlmsg_end(msg, hdr) < 0) {
7341 nlmsg_free(msg);
7342 return;
7343 }
7344
7345 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7346 nl80211_mlme_mcgrp.id, gfp);
7347 return;
7348
7349 nla_put_failure:
7350 genlmsg_cancel(msg, hdr);
7351 nlmsg_free(msg);
7352 }
7353
7354 static int nl80211_netlink_notify(struct notifier_block * nb,
7355 unsigned long state,
7356 void *_notify)
7357 {
7358 struct netlink_notify *notify = _notify;
7359 struct cfg80211_registered_device *rdev;
7360 struct wireless_dev *wdev;
7361
7362 if (state != NETLINK_URELEASE)
7363 return NOTIFY_DONE;
7364
7365 rcu_read_lock();
7366
7367 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7368 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7369 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7370
7371 rcu_read_unlock();
7372
7373 return NOTIFY_DONE;
7374 }
7375
7376 static struct notifier_block nl80211_netlink_notifier = {
7377 .notifier_call = nl80211_netlink_notify,
7378 };
7379
7380 /* initialisation/exit functions */
7381
7382 int nl80211_init(void)
7383 {
7384 int err;
7385
7386 err = genl_register_family_with_ops(&nl80211_fam,
7387 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7388 if (err)
7389 return err;
7390
7391 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7392 if (err)
7393 goto err_out;
7394
7395 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7396 if (err)
7397 goto err_out;
7398
7399 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7400 if (err)
7401 goto err_out;
7402
7403 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7404 if (err)
7405 goto err_out;
7406
7407 #ifdef CONFIG_NL80211_TESTMODE
7408 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7409 if (err)
7410 goto err_out;
7411 #endif
7412
7413 err = netlink_register_notifier(&nl80211_netlink_notifier);
7414 if (err)
7415 goto err_out;
7416
7417 return 0;
7418 err_out:
7419 genl_unregister_family(&nl80211_fam);
7420 return err;
7421 }
7422
7423 void nl80211_exit(void)
7424 {
7425 netlink_unregister_notifier(&nl80211_netlink_notifier);
7426 genl_unregister_family(&nl80211_fam);
7427 }
Linux kernel - Deliverables
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