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iwlagn: fix slot programming
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
bloba3e26951fd8b739482519bc8c4530590a9c2e687
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 int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4130 {
4131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4132 struct net_device *dev = info->user_ptr[1];
4133 struct ieee80211_channel *chan;
4134 const u8 *bssid, *ssid, *ie = NULL;
4135 int err, ssid_len, ie_len = 0;
4136 enum nl80211_auth_type auth_type;
4137 struct key_parse key;
4138 bool local_state_change;
4139
4140 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4141 return -EINVAL;
4142
4143 if (!info->attrs[NL80211_ATTR_MAC])
4144 return -EINVAL;
4145
4146 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4147 return -EINVAL;
4148
4149 if (!info->attrs[NL80211_ATTR_SSID])
4150 return -EINVAL;
4151
4152 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4153 return -EINVAL;
4154
4155 err = nl80211_parse_key(info, &key);
4156 if (err)
4157 return err;
4158
4159 if (key.idx >= 0) {
4160 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4161 return -EINVAL;
4162 if (!key.p.key || !key.p.key_len)
4163 return -EINVAL;
4164 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4165 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4166 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4167 key.p.key_len != WLAN_KEY_LEN_WEP104))
4168 return -EINVAL;
4169 if (key.idx > 4)
4170 return -EINVAL;
4171 } else {
4172 key.p.key_len = 0;
4173 key.p.key = NULL;
4174 }
4175
4176 if (key.idx >= 0) {
4177 int i;
4178 bool ok = false;
4179 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4180 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4181 ok = true;
4182 break;
4183 }
4184 }
4185 if (!ok)
4186 return -EINVAL;
4187 }
4188
4189 if (!rdev->ops->auth)
4190 return -EOPNOTSUPP;
4191
4192 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4193 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4194 return -EOPNOTSUPP;
4195
4196 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4197 chan = ieee80211_get_channel(&rdev->wiphy,
4198 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4199 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4200 return -EINVAL;
4201
4202 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4203 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4204
4205 if (info->attrs[NL80211_ATTR_IE]) {
4206 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4207 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4208 }
4209
4210 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4211 if (!nl80211_valid_auth_type(auth_type))
4212 return -EINVAL;
4213
4214 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4215
4216 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4217 ssid, ssid_len, ie, ie_len,
4218 key.p.key, key.p.key_len, key.idx,
4219 local_state_change);
4220 }
4221
4222 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4223 struct genl_info *info,
4224 struct cfg80211_crypto_settings *settings,
4225 int cipher_limit)
4226 {
4227 memset(settings, 0, sizeof(*settings));
4228
4229 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4230
4231 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4232 u16 proto;
4233 proto = nla_get_u16(
4234 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4235 settings->control_port_ethertype = cpu_to_be16(proto);
4236 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4237 proto != ETH_P_PAE)
4238 return -EINVAL;
4239 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4240 settings->control_port_no_encrypt = true;
4241 } else
4242 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4243
4244 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4245 void *data;
4246 int len, i;
4247
4248 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4249 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4250 settings->n_ciphers_pairwise = len / sizeof(u32);
4251
4252 if (len % sizeof(u32))
4253 return -EINVAL;
4254
4255 if (settings->n_ciphers_pairwise > cipher_limit)
4256 return -EINVAL;
4257
4258 memcpy(settings->ciphers_pairwise, data, len);
4259
4260 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4261 if (!cfg80211_supported_cipher_suite(
4262 &rdev->wiphy,
4263 settings->ciphers_pairwise[i]))
4264 return -EINVAL;
4265 }
4266
4267 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4268 settings->cipher_group =
4269 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4270 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4271 settings->cipher_group))
4272 return -EINVAL;
4273 }
4274
4275 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4276 settings->wpa_versions =
4277 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4278 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4279 return -EINVAL;
4280 }
4281
4282 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4283 void *data;
4284 int len;
4285
4286 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4287 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4288 settings->n_akm_suites = len / sizeof(u32);
4289
4290 if (len % sizeof(u32))
4291 return -EINVAL;
4292
4293 memcpy(settings->akm_suites, data, len);
4294 }
4295
4296 return 0;
4297 }
4298
4299 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4300 {
4301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4302 struct net_device *dev = info->user_ptr[1];
4303 struct cfg80211_crypto_settings crypto;
4304 struct ieee80211_channel *chan;
4305 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4306 int err, ssid_len, ie_len = 0;
4307 bool use_mfp = false;
4308
4309 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4310 return -EINVAL;
4311
4312 if (!info->attrs[NL80211_ATTR_MAC] ||
4313 !info->attrs[NL80211_ATTR_SSID] ||
4314 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4315 return -EINVAL;
4316
4317 if (!rdev->ops->assoc)
4318 return -EOPNOTSUPP;
4319
4320 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4321 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4322 return -EOPNOTSUPP;
4323
4324 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4325
4326 chan = ieee80211_get_channel(&rdev->wiphy,
4327 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4328 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4329 return -EINVAL;
4330
4331 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4332 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4333
4334 if (info->attrs[NL80211_ATTR_IE]) {
4335 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4336 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4337 }
4338
4339 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4340 enum nl80211_mfp mfp =
4341 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4342 if (mfp == NL80211_MFP_REQUIRED)
4343 use_mfp = true;
4344 else if (mfp != NL80211_MFP_NO)
4345 return -EINVAL;
4346 }
4347
4348 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4349 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4350
4351 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4352 if (!err)
4353 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4354 ssid, ssid_len, ie, ie_len, use_mfp,
4355 &crypto);
4356
4357 return err;
4358 }
4359
4360 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4361 {
4362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4363 struct net_device *dev = info->user_ptr[1];
4364 const u8 *ie = NULL, *bssid;
4365 int ie_len = 0;
4366 u16 reason_code;
4367 bool local_state_change;
4368
4369 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4370 return -EINVAL;
4371
4372 if (!info->attrs[NL80211_ATTR_MAC])
4373 return -EINVAL;
4374
4375 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4376 return -EINVAL;
4377
4378 if (!rdev->ops->deauth)
4379 return -EOPNOTSUPP;
4380
4381 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4382 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4383 return -EOPNOTSUPP;
4384
4385 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4386
4387 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4388 if (reason_code == 0) {
4389 /* Reason Code 0 is reserved */
4390 return -EINVAL;
4391 }
4392
4393 if (info->attrs[NL80211_ATTR_IE]) {
4394 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4395 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4396 }
4397
4398 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4399
4400 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4401 local_state_change);
4402 }
4403
4404 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4405 {
4406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4407 struct net_device *dev = info->user_ptr[1];
4408 const u8 *ie = NULL, *bssid;
4409 int ie_len = 0;
4410 u16 reason_code;
4411 bool local_state_change;
4412
4413 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4414 return -EINVAL;
4415
4416 if (!info->attrs[NL80211_ATTR_MAC])
4417 return -EINVAL;
4418
4419 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4420 return -EINVAL;
4421
4422 if (!rdev->ops->disassoc)
4423 return -EOPNOTSUPP;
4424
4425 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4426 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4427 return -EOPNOTSUPP;
4428
4429 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4430
4431 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4432 if (reason_code == 0) {
4433 /* Reason Code 0 is reserved */
4434 return -EINVAL;
4435 }
4436
4437 if (info->attrs[NL80211_ATTR_IE]) {
4438 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4439 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4440 }
4441
4442 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4443
4444 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4445 local_state_change);
4446 }
4447
4448 static bool
4449 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4450 int mcast_rate[IEEE80211_NUM_BANDS],
4451 int rateval)
4452 {
4453 struct wiphy *wiphy = &rdev->wiphy;
4454 bool found = false;
4455 int band, i;
4456
4457 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4458 struct ieee80211_supported_band *sband;
4459
4460 sband = wiphy->bands[band];
4461 if (!sband)
4462 continue;
4463
4464 for (i = 0; i < sband->n_bitrates; i++) {
4465 if (sband->bitrates[i].bitrate == rateval) {
4466 mcast_rate[band] = i + 1;
4467 found = true;
4468 break;
4469 }
4470 }
4471 }
4472
4473 return found;
4474 }
4475
4476 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4477 {
4478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4479 struct net_device *dev = info->user_ptr[1];
4480 struct cfg80211_ibss_params ibss;
4481 struct wiphy *wiphy;
4482 struct cfg80211_cached_keys *connkeys = NULL;
4483 int err;
4484
4485 memset(&ibss, 0, sizeof(ibss));
4486
4487 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4488 return -EINVAL;
4489
4490 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4491 !info->attrs[NL80211_ATTR_SSID] ||
4492 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4493 return -EINVAL;
4494
4495 ibss.beacon_interval = 100;
4496
4497 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4498 ibss.beacon_interval =
4499 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4500 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4501 return -EINVAL;
4502 }
4503
4504 if (!rdev->ops->join_ibss)
4505 return -EOPNOTSUPP;
4506
4507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4508 return -EOPNOTSUPP;
4509
4510 wiphy = &rdev->wiphy;
4511
4512 if (info->attrs[NL80211_ATTR_MAC]) {
4513 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4514
4515 if (!is_valid_ether_addr(ibss.bssid))
4516 return -EINVAL;
4517 }
4518 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4519 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4520
4521 if (info->attrs[NL80211_ATTR_IE]) {
4522 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4523 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4524 }
4525
4526 ibss.channel = ieee80211_get_channel(wiphy,
4527 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4528 if (!ibss.channel ||
4529 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4530 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4531 return -EINVAL;
4532
4533 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4534 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4535
4536 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4537 u8 *rates =
4538 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4539 int n_rates =
4540 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4541 struct ieee80211_supported_band *sband =
4542 wiphy->bands[ibss.channel->band];
4543 int err;
4544
4545 err = ieee80211_get_ratemask(sband, rates, n_rates,
4546 &ibss.basic_rates);
4547 if (err)
4548 return err;
4549 }
4550
4551 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4552 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4553 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4554 return -EINVAL;
4555
4556 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4557 connkeys = nl80211_parse_connkeys(rdev,
4558 info->attrs[NL80211_ATTR_KEYS]);
4559 if (IS_ERR(connkeys))
4560 return PTR_ERR(connkeys);
4561 }
4562
4563 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4564 if (err)
4565 kfree(connkeys);
4566 return err;
4567 }
4568
4569 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4570 {
4571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4572 struct net_device *dev = info->user_ptr[1];
4573
4574 if (!rdev->ops->leave_ibss)
4575 return -EOPNOTSUPP;
4576
4577 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4578 return -EOPNOTSUPP;
4579
4580 return cfg80211_leave_ibss(rdev, dev, false);
4581 }
4582
4583 #ifdef CONFIG_NL80211_TESTMODE
4584 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4585 .name = "testmode",
4586 };
4587
4588 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4589 {
4590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4591 int err;
4592
4593 if (!info->attrs[NL80211_ATTR_TESTDATA])
4594 return -EINVAL;
4595
4596 err = -EOPNOTSUPP;
4597 if (rdev->ops->testmode_cmd) {
4598 rdev->testmode_info = info;
4599 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4600 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4601 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4602 rdev->testmode_info = NULL;
4603 }
4604
4605 return err;
4606 }
4607
4608 static int nl80211_testmode_dump(struct sk_buff *skb,
4609 struct netlink_callback *cb)
4610 {
4611 struct cfg80211_registered_device *dev;
4612 int err;
4613 long phy_idx;
4614 void *data = NULL;
4615 int data_len = 0;
4616
4617 if (cb->args[0]) {
4618 /*
4619 * 0 is a valid index, but not valid for args[0],
4620 * so we need to offset by 1.
4621 */
4622 phy_idx = cb->args[0] - 1;
4623 } else {
4624 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4625 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4626 nl80211_policy);
4627 if (err)
4628 return err;
4629 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4630 return -EINVAL;
4631 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4632 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4633 cb->args[1] =
4634 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4635 }
4636
4637 if (cb->args[1]) {
4638 data = nla_data((void *)cb->args[1]);
4639 data_len = nla_len((void *)cb->args[1]);
4640 }
4641
4642 mutex_lock(&cfg80211_mutex);
4643 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4644 if (!dev) {
4645 mutex_unlock(&cfg80211_mutex);
4646 return -ENOENT;
4647 }
4648 cfg80211_lock_rdev(dev);
4649 mutex_unlock(&cfg80211_mutex);
4650
4651 if (!dev->ops->testmode_dump) {
4652 err = -EOPNOTSUPP;
4653 goto out_err;
4654 }
4655
4656 while (1) {
4657 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4658 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4659 NL80211_CMD_TESTMODE);
4660 struct nlattr *tmdata;
4661
4662 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4663 genlmsg_cancel(skb, hdr);
4664 break;
4665 }
4666
4667 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4668 if (!tmdata) {
4669 genlmsg_cancel(skb, hdr);
4670 break;
4671 }
4672 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4673 data, data_len);
4674 nla_nest_end(skb, tmdata);
4675
4676 if (err == -ENOBUFS || err == -ENOENT) {
4677 genlmsg_cancel(skb, hdr);
4678 break;
4679 } else if (err) {
4680 genlmsg_cancel(skb, hdr);
4681 goto out_err;
4682 }
4683
4684 genlmsg_end(skb, hdr);
4685 }
4686
4687 err = skb->len;
4688 /* see above */
4689 cb->args[0] = phy_idx + 1;
4690 out_err:
4691 cfg80211_unlock_rdev(dev);
4692 return err;
4693 }
4694
4695 static struct sk_buff *
4696 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4697 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4698 {
4699 struct sk_buff *skb;
4700 void *hdr;
4701 struct nlattr *data;
4702
4703 skb = nlmsg_new(approxlen + 100, gfp);
4704 if (!skb)
4705 return NULL;
4706
4707 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4708 if (!hdr) {
4709 kfree_skb(skb);
4710 return NULL;
4711 }
4712
4713 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4714 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4715
4716 ((void **)skb->cb)[0] = rdev;
4717 ((void **)skb->cb)[1] = hdr;
4718 ((void **)skb->cb)[2] = data;
4719
4720 return skb;
4721
4722 nla_put_failure:
4723 kfree_skb(skb);
4724 return NULL;
4725 }
4726
4727 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4728 int approxlen)
4729 {
4730 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4731
4732 if (WARN_ON(!rdev->testmode_info))
4733 return NULL;
4734
4735 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4736 rdev->testmode_info->snd_pid,
4737 rdev->testmode_info->snd_seq,
4738 GFP_KERNEL);
4739 }
4740 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4741
4742 int cfg80211_testmode_reply(struct sk_buff *skb)
4743 {
4744 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4745 void *hdr = ((void **)skb->cb)[1];
4746 struct nlattr *data = ((void **)skb->cb)[2];
4747
4748 if (WARN_ON(!rdev->testmode_info)) {
4749 kfree_skb(skb);
4750 return -EINVAL;
4751 }
4752
4753 nla_nest_end(skb, data);
4754 genlmsg_end(skb, hdr);
4755 return genlmsg_reply(skb, rdev->testmode_info);
4756 }
4757 EXPORT_SYMBOL(cfg80211_testmode_reply);
4758
4759 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4760 int approxlen, gfp_t gfp)
4761 {
4762 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4763
4764 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4765 }
4766 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4767
4768 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4769 {
4770 void *hdr = ((void **)skb->cb)[1];
4771 struct nlattr *data = ((void **)skb->cb)[2];
4772
4773 nla_nest_end(skb, data);
4774 genlmsg_end(skb, hdr);
4775 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4776 }
4777 EXPORT_SYMBOL(cfg80211_testmode_event);
4778 #endif
4779
4780 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4781 {
4782 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4783 struct net_device *dev = info->user_ptr[1];
4784 struct cfg80211_connect_params connect;
4785 struct wiphy *wiphy;
4786 struct cfg80211_cached_keys *connkeys = NULL;
4787 int err;
4788
4789 memset(&connect, 0, sizeof(connect));
4790
4791 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4792 return -EINVAL;
4793
4794 if (!info->attrs[NL80211_ATTR_SSID] ||
4795 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4796 return -EINVAL;
4797
4798 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4799 connect.auth_type =
4800 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4801 if (!nl80211_valid_auth_type(connect.auth_type))
4802 return -EINVAL;
4803 } else
4804 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4805
4806 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4807
4808 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4809 NL80211_MAX_NR_CIPHER_SUITES);
4810 if (err)
4811 return err;
4812
4813 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4814 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4815 return -EOPNOTSUPP;
4816
4817 wiphy = &rdev->wiphy;
4818
4819 if (info->attrs[NL80211_ATTR_MAC])
4820 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4821 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4822 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4823
4824 if (info->attrs[NL80211_ATTR_IE]) {
4825 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4826 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4827 }
4828
4829 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4830 connect.channel =
4831 ieee80211_get_channel(wiphy,
4832 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4833 if (!connect.channel ||
4834 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4835 return -EINVAL;
4836 }
4837
4838 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4839 connkeys = nl80211_parse_connkeys(rdev,
4840 info->attrs[NL80211_ATTR_KEYS]);
4841 if (IS_ERR(connkeys))
4842 return PTR_ERR(connkeys);
4843 }
4844
4845 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4846 if (err)
4847 kfree(connkeys);
4848 return err;
4849 }
4850
4851 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4852 {
4853 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4854 struct net_device *dev = info->user_ptr[1];
4855 u16 reason;
4856
4857 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4858 reason = WLAN_REASON_DEAUTH_LEAVING;
4859 else
4860 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4861
4862 if (reason == 0)
4863 return -EINVAL;
4864
4865 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4866 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4867 return -EOPNOTSUPP;
4868
4869 return cfg80211_disconnect(rdev, dev, reason, true);
4870 }
4871
4872 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4873 {
4874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4875 struct net *net;
4876 int err;
4877 u32 pid;
4878
4879 if (!info->attrs[NL80211_ATTR_PID])
4880 return -EINVAL;
4881
4882 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4883
4884 net = get_net_ns_by_pid(pid);
4885 if (IS_ERR(net))
4886 return PTR_ERR(net);
4887
4888 err = 0;
4889
4890 /* check if anything to do */
4891 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4892 err = cfg80211_switch_netns(rdev, net);
4893
4894 put_net(net);
4895 return err;
4896 }
4897
4898 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4899 {
4900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4901 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4902 struct cfg80211_pmksa *pmksa) = NULL;
4903 struct net_device *dev = info->user_ptr[1];
4904 struct cfg80211_pmksa pmksa;
4905
4906 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4907
4908 if (!info->attrs[NL80211_ATTR_MAC])
4909 return -EINVAL;
4910
4911 if (!info->attrs[NL80211_ATTR_PMKID])
4912 return -EINVAL;
4913
4914 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4915 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4916
4917 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4918 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4919 return -EOPNOTSUPP;
4920
4921 switch (info->genlhdr->cmd) {
4922 case NL80211_CMD_SET_PMKSA:
4923 rdev_ops = rdev->ops->set_pmksa;
4924 break;
4925 case NL80211_CMD_DEL_PMKSA:
4926 rdev_ops = rdev->ops->del_pmksa;
4927 break;
4928 default:
4929 WARN_ON(1);
4930 break;
4931 }
4932
4933 if (!rdev_ops)
4934 return -EOPNOTSUPP;
4935
4936 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4937 }
4938
4939 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4940 {
4941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4942 struct net_device *dev = info->user_ptr[1];
4943
4944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4945 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4946 return -EOPNOTSUPP;
4947
4948 if (!rdev->ops->flush_pmksa)
4949 return -EOPNOTSUPP;
4950
4951 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4952 }
4953
4954 static int nl80211_remain_on_channel(struct sk_buff *skb,
4955 struct genl_info *info)
4956 {
4957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4958 struct net_device *dev = info->user_ptr[1];
4959 struct ieee80211_channel *chan;
4960 struct sk_buff *msg;
4961 void *hdr;
4962 u64 cookie;
4963 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4964 u32 freq, duration;
4965 int err;
4966
4967 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4968 !info->attrs[NL80211_ATTR_DURATION])
4969 return -EINVAL;
4970
4971 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4972
4973 /*
4974 * We should be on that channel for at least one jiffie,
4975 * and more than 5 seconds seems excessive.
4976 */
4977 if (!duration || !msecs_to_jiffies(duration) ||
4978 duration > rdev->wiphy.max_remain_on_channel_duration)
4979 return -EINVAL;
4980
4981 if (!rdev->ops->remain_on_channel)
4982 return -EOPNOTSUPP;
4983
4984 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4985 channel_type = nla_get_u32(
4986 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4987 if (channel_type != NL80211_CHAN_NO_HT &&
4988 channel_type != NL80211_CHAN_HT20 &&
4989 channel_type != NL80211_CHAN_HT40PLUS &&
4990 channel_type != NL80211_CHAN_HT40MINUS)
4991 return -EINVAL;
4992 }
4993
4994 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
4995 chan = rdev_freq_to_chan(rdev, freq, channel_type);
4996 if (chan == NULL)
4997 return -EINVAL;
4998
4999 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5000 if (!msg)
5001 return -ENOMEM;
5002
5003 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5004 NL80211_CMD_REMAIN_ON_CHANNEL);
5005
5006 if (IS_ERR(hdr)) {
5007 err = PTR_ERR(hdr);
5008 goto free_msg;
5009 }
5010
5011 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5012 channel_type, duration, &cookie);
5013
5014 if (err)
5015 goto free_msg;
5016
5017 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5018
5019 genlmsg_end(msg, hdr);
5020
5021 return genlmsg_reply(msg, info);
5022
5023 nla_put_failure:
5024 err = -ENOBUFS;
5025 free_msg:
5026 nlmsg_free(msg);
5027 return err;
5028 }
5029
5030 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5031 struct genl_info *info)
5032 {
5033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5034 struct net_device *dev = info->user_ptr[1];
5035 u64 cookie;
5036
5037 if (!info->attrs[NL80211_ATTR_COOKIE])
5038 return -EINVAL;
5039
5040 if (!rdev->ops->cancel_remain_on_channel)
5041 return -EOPNOTSUPP;
5042
5043 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5044
5045 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5046 }
5047
5048 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5049 u8 *rates, u8 rates_len)
5050 {
5051 u8 i;
5052 u32 mask = 0;
5053
5054 for (i = 0; i < rates_len; i++) {
5055 int rate = (rates[i] & 0x7f) * 5;
5056 int ridx;
5057 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5058 struct ieee80211_rate *srate =
5059 &sband->bitrates[ridx];
5060 if (rate == srate->bitrate) {
5061 mask |= 1 << ridx;
5062 break;
5063 }
5064 }
5065 if (ridx == sband->n_bitrates)
5066 return 0; /* rate not found */
5067 }
5068
5069 return mask;
5070 }
5071
5072 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5073 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5074 .len = NL80211_MAX_SUPP_RATES },
5075 };
5076
5077 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5078 struct genl_info *info)
5079 {
5080 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5082 struct cfg80211_bitrate_mask mask;
5083 int rem, i;
5084 struct net_device *dev = info->user_ptr[1];
5085 struct nlattr *tx_rates;
5086 struct ieee80211_supported_band *sband;
5087
5088 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5089 return -EINVAL;
5090
5091 if (!rdev->ops->set_bitrate_mask)
5092 return -EOPNOTSUPP;
5093
5094 memset(&mask, 0, sizeof(mask));
5095 /* Default to all rates enabled */
5096 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5097 sband = rdev->wiphy.bands[i];
5098 mask.control[i].legacy =
5099 sband ? (1 << sband->n_bitrates) - 1 : 0;
5100 }
5101
5102 /*
5103 * The nested attribute uses enum nl80211_band as the index. This maps
5104 * directly to the enum ieee80211_band values used in cfg80211.
5105 */
5106 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5107 {
5108 enum ieee80211_band band = nla_type(tx_rates);
5109 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5110 return -EINVAL;
5111 sband = rdev->wiphy.bands[band];
5112 if (sband == NULL)
5113 return -EINVAL;
5114 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5115 nla_len(tx_rates), nl80211_txattr_policy);
5116 if (tb[NL80211_TXRATE_LEGACY]) {
5117 mask.control[band].legacy = rateset_to_mask(
5118 sband,
5119 nla_data(tb[NL80211_TXRATE_LEGACY]),
5120 nla_len(tb[NL80211_TXRATE_LEGACY]));
5121 if (mask.control[band].legacy == 0)
5122 return -EINVAL;
5123 }
5124 }
5125
5126 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5127 }
5128
5129 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5130 {
5131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5132 struct net_device *dev = info->user_ptr[1];
5133 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5134
5135 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5136 return -EINVAL;
5137
5138 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5139 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5140
5141 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5142 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5143 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5144 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5145 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5146 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5147 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5148 return -EOPNOTSUPP;
5149
5150 /* not much point in registering if we can't reply */
5151 if (!rdev->ops->mgmt_tx)
5152 return -EOPNOTSUPP;
5153
5154 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5155 frame_type,
5156 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5157 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5158 }
5159
5160 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5161 {
5162 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5163 struct net_device *dev = info->user_ptr[1];
5164 struct ieee80211_channel *chan;
5165 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5166 bool channel_type_valid = false;
5167 u32 freq;
5168 int err;
5169 void *hdr;
5170 u64 cookie;
5171 struct sk_buff *msg;
5172 unsigned int wait = 0;
5173 bool offchan;
5174
5175 if (!info->attrs[NL80211_ATTR_FRAME] ||
5176 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5177 return -EINVAL;
5178
5179 if (!rdev->ops->mgmt_tx)
5180 return -EOPNOTSUPP;
5181
5182 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5183 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5184 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5185 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5186 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5187 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5189 return -EOPNOTSUPP;
5190
5191 if (info->attrs[NL80211_ATTR_DURATION]) {
5192 if (!rdev->ops->mgmt_tx_cancel_wait)
5193 return -EINVAL;
5194 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5195 }
5196
5197 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5198 channel_type = nla_get_u32(
5199 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5200 if (channel_type != NL80211_CHAN_NO_HT &&
5201 channel_type != NL80211_CHAN_HT20 &&
5202 channel_type != NL80211_CHAN_HT40PLUS &&
5203 channel_type != NL80211_CHAN_HT40MINUS)
5204 return -EINVAL;
5205 channel_type_valid = true;
5206 }
5207
5208 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5209
5210 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5211 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5212 if (chan == NULL)
5213 return -EINVAL;
5214
5215 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5216 if (!msg)
5217 return -ENOMEM;
5218
5219 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5220 NL80211_CMD_FRAME);
5221
5222 if (IS_ERR(hdr)) {
5223 err = PTR_ERR(hdr);
5224 goto free_msg;
5225 }
5226 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5227 channel_type_valid, wait,
5228 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5229 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5230 &cookie);
5231 if (err)
5232 goto free_msg;
5233
5234 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5235
5236 genlmsg_end(msg, hdr);
5237 return genlmsg_reply(msg, info);
5238
5239 nla_put_failure:
5240 err = -ENOBUFS;
5241 free_msg:
5242 nlmsg_free(msg);
5243 return err;
5244 }
5245
5246 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5247 {
5248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5249 struct net_device *dev = info->user_ptr[1];
5250 u64 cookie;
5251
5252 if (!info->attrs[NL80211_ATTR_COOKIE])
5253 return -EINVAL;
5254
5255 if (!rdev->ops->mgmt_tx_cancel_wait)
5256 return -EOPNOTSUPP;
5257
5258 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5259 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5260 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5261 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5263 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5264 return -EOPNOTSUPP;
5265
5266 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5267
5268 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5269 }
5270
5271 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5272 {
5273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5274 struct wireless_dev *wdev;
5275 struct net_device *dev = info->user_ptr[1];
5276 u8 ps_state;
5277 bool state;
5278 int err;
5279
5280 if (!info->attrs[NL80211_ATTR_PS_STATE])
5281 return -EINVAL;
5282
5283 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5284
5285 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5286 return -EINVAL;
5287
5288 wdev = dev->ieee80211_ptr;
5289
5290 if (!rdev->ops->set_power_mgmt)
5291 return -EOPNOTSUPP;
5292
5293 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5294
5295 if (state == wdev->ps)
5296 return 0;
5297
5298 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5299 wdev->ps_timeout);
5300 if (!err)
5301 wdev->ps = state;
5302 return err;
5303 }
5304
5305 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5306 {
5307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5308 enum nl80211_ps_state ps_state;
5309 struct wireless_dev *wdev;
5310 struct net_device *dev = info->user_ptr[1];
5311 struct sk_buff *msg;
5312 void *hdr;
5313 int err;
5314
5315 wdev = dev->ieee80211_ptr;
5316
5317 if (!rdev->ops->set_power_mgmt)
5318 return -EOPNOTSUPP;
5319
5320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5321 if (!msg)
5322 return -ENOMEM;
5323
5324 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5325 NL80211_CMD_GET_POWER_SAVE);
5326 if (!hdr) {
5327 err = -ENOBUFS;
5328 goto free_msg;
5329 }
5330
5331 if (wdev->ps)
5332 ps_state = NL80211_PS_ENABLED;
5333 else
5334 ps_state = NL80211_PS_DISABLED;
5335
5336 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5337
5338 genlmsg_end(msg, hdr);
5339 return genlmsg_reply(msg, info);
5340
5341 nla_put_failure:
5342 err = -ENOBUFS;
5343 free_msg:
5344 nlmsg_free(msg);
5345 return err;
5346 }
5347
5348 static struct nla_policy
5349 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5350 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5351 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5352 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5353 };
5354
5355 static int nl80211_set_cqm_rssi(struct genl_info *info,
5356 s32 threshold, u32 hysteresis)
5357 {
5358 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5359 struct wireless_dev *wdev;
5360 struct net_device *dev = info->user_ptr[1];
5361
5362 if (threshold > 0)
5363 return -EINVAL;
5364
5365 wdev = dev->ieee80211_ptr;
5366
5367 if (!rdev->ops->set_cqm_rssi_config)
5368 return -EOPNOTSUPP;
5369
5370 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5371 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5372 return -EOPNOTSUPP;
5373
5374 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5375 threshold, hysteresis);
5376 }
5377
5378 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5379 {
5380 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5381 struct nlattr *cqm;
5382 int err;
5383
5384 cqm = info->attrs[NL80211_ATTR_CQM];
5385 if (!cqm) {
5386 err = -EINVAL;
5387 goto out;
5388 }
5389
5390 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5391 nl80211_attr_cqm_policy);
5392 if (err)
5393 goto out;
5394
5395 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5396 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5397 s32 threshold;
5398 u32 hysteresis;
5399 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5400 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5401 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5402 } else
5403 err = -EINVAL;
5404
5405 out:
5406 return err;
5407 }
5408
5409 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5410 {
5411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5412 struct net_device *dev = info->user_ptr[1];
5413 struct mesh_config cfg;
5414 struct mesh_setup setup;
5415 int err;
5416
5417 /* start with default */
5418 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5419 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5420
5421 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5422 /* and parse parameters if given */
5423 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5424 if (err)
5425 return err;
5426 }
5427
5428 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5429 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5430 return -EINVAL;
5431
5432 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5433 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5434
5435 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5436 /* parse additional setup parameters if given */
5437 err = nl80211_parse_mesh_setup(info, &setup);
5438 if (err)
5439 return err;
5440 }
5441
5442 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5443 }
5444
5445 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5446 {
5447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5448 struct net_device *dev = info->user_ptr[1];
5449
5450 return cfg80211_leave_mesh(rdev, dev);
5451 }
5452
5453 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5454 {
5455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5456 struct sk_buff *msg;
5457 void *hdr;
5458
5459 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5460 return -EOPNOTSUPP;
5461
5462 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5463 if (!msg)
5464 return -ENOMEM;
5465
5466 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5467 NL80211_CMD_GET_WOWLAN);
5468 if (!hdr)
5469 goto nla_put_failure;
5470
5471 if (rdev->wowlan) {
5472 struct nlattr *nl_wowlan;
5473
5474 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5475 if (!nl_wowlan)
5476 goto nla_put_failure;
5477
5478 if (rdev->wowlan->any)
5479 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5480 if (rdev->wowlan->disconnect)
5481 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5482 if (rdev->wowlan->magic_pkt)
5483 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5484 if (rdev->wowlan->gtk_rekey_failure)
5485 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5486 if (rdev->wowlan->eap_identity_req)
5487 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5488 if (rdev->wowlan->four_way_handshake)
5489 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5490 if (rdev->wowlan->rfkill_release)
5491 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5492 if (rdev->wowlan->n_patterns) {
5493 struct nlattr *nl_pats, *nl_pat;
5494 int i, pat_len;
5495
5496 nl_pats = nla_nest_start(msg,
5497 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5498 if (!nl_pats)
5499 goto nla_put_failure;
5500
5501 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5502 nl_pat = nla_nest_start(msg, i + 1);
5503 if (!nl_pat)
5504 goto nla_put_failure;
5505 pat_len = rdev->wowlan->patterns[i].pattern_len;
5506 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5507 DIV_ROUND_UP(pat_len, 8),
5508 rdev->wowlan->patterns[i].mask);
5509 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5510 pat_len,
5511 rdev->wowlan->patterns[i].pattern);
5512 nla_nest_end(msg, nl_pat);
5513 }
5514 nla_nest_end(msg, nl_pats);
5515 }
5516
5517 nla_nest_end(msg, nl_wowlan);
5518 }
5519
5520 genlmsg_end(msg, hdr);
5521 return genlmsg_reply(msg, info);
5522
5523 nla_put_failure:
5524 nlmsg_free(msg);
5525 return -ENOBUFS;
5526 }
5527
5528 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5529 {
5530 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5531 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5532 struct cfg80211_wowlan no_triggers = {};
5533 struct cfg80211_wowlan new_triggers = {};
5534 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5535 int err, i;
5536
5537 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5538 return -EOPNOTSUPP;
5539
5540 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5541 goto no_triggers;
5542
5543 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5544 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5545 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5546 nl80211_wowlan_policy);
5547 if (err)
5548 return err;
5549
5550 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5551 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5552 return -EINVAL;
5553 new_triggers.any = true;
5554 }
5555
5556 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5557 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5558 return -EINVAL;
5559 new_triggers.disconnect = true;
5560 }
5561
5562 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5563 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5564 return -EINVAL;
5565 new_triggers.magic_pkt = true;
5566 }
5567
5568 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5569 return -EINVAL;
5570
5571 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5572 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5573 return -EINVAL;
5574 new_triggers.gtk_rekey_failure = true;
5575 }
5576
5577 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5578 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5579 return -EINVAL;
5580 new_triggers.eap_identity_req = true;
5581 }
5582
5583 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5584 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5585 return -EINVAL;
5586 new_triggers.four_way_handshake = true;
5587 }
5588
5589 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5590 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5591 return -EINVAL;
5592 new_triggers.rfkill_release = true;
5593 }
5594
5595 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5596 struct nlattr *pat;
5597 int n_patterns = 0;
5598 int rem, pat_len, mask_len;
5599 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5600
5601 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5602 rem)
5603 n_patterns++;
5604 if (n_patterns > wowlan->n_patterns)
5605 return -EINVAL;
5606
5607 new_triggers.patterns = kcalloc(n_patterns,
5608 sizeof(new_triggers.patterns[0]),
5609 GFP_KERNEL);
5610 if (!new_triggers.patterns)
5611 return -ENOMEM;
5612
5613 new_triggers.n_patterns = n_patterns;
5614 i = 0;
5615
5616 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5617 rem) {
5618 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5619 nla_data(pat), nla_len(pat), NULL);
5620 err = -EINVAL;
5621 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5622 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5623 goto error;
5624 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5625 mask_len = DIV_ROUND_UP(pat_len, 8);
5626 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5627 mask_len)
5628 goto error;
5629 if (pat_len > wowlan->pattern_max_len ||
5630 pat_len < wowlan->pattern_min_len)
5631 goto error;
5632
5633 new_triggers.patterns[i].mask =
5634 kmalloc(mask_len + pat_len, GFP_KERNEL);
5635 if (!new_triggers.patterns[i].mask) {
5636 err = -ENOMEM;
5637 goto error;
5638 }
5639 new_triggers.patterns[i].pattern =
5640 new_triggers.patterns[i].mask + mask_len;
5641 memcpy(new_triggers.patterns[i].mask,
5642 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5643 mask_len);
5644 new_triggers.patterns[i].pattern_len = pat_len;
5645 memcpy(new_triggers.patterns[i].pattern,
5646 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5647 pat_len);
5648 i++;
5649 }
5650 }
5651
5652 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5653 struct cfg80211_wowlan *ntrig;
5654 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5655 GFP_KERNEL);
5656 if (!ntrig) {
5657 err = -ENOMEM;
5658 goto error;
5659 }
5660 cfg80211_rdev_free_wowlan(rdev);
5661 rdev->wowlan = ntrig;
5662 } else {
5663 no_triggers:
5664 cfg80211_rdev_free_wowlan(rdev);
5665 rdev->wowlan = NULL;
5666 }
5667
5668 return 0;
5669 error:
5670 for (i = 0; i < new_triggers.n_patterns; i++)
5671 kfree(new_triggers.patterns[i].mask);
5672 kfree(new_triggers.patterns);
5673 return err;
5674 }
5675
5676 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5677 {
5678 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5679 struct net_device *dev = info->user_ptr[1];
5680 struct wireless_dev *wdev = dev->ieee80211_ptr;
5681 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5682 struct cfg80211_gtk_rekey_data rekey_data;
5683 int err;
5684
5685 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5686 return -EINVAL;
5687
5688 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5689 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5690 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5691 nl80211_rekey_policy);
5692 if (err)
5693 return err;
5694
5695 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5696 return -ERANGE;
5697 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5698 return -ERANGE;
5699 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5700 return -ERANGE;
5701
5702 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5703 NL80211_KEK_LEN);
5704 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5705 NL80211_KCK_LEN);
5706 memcpy(rekey_data.replay_ctr,
5707 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5708 NL80211_REPLAY_CTR_LEN);
5709
5710 wdev_lock(wdev);
5711 if (!wdev->current_bss) {
5712 err = -ENOTCONN;
5713 goto out;
5714 }
5715
5716 if (!rdev->ops->set_rekey_data) {
5717 err = -EOPNOTSUPP;
5718 goto out;
5719 }
5720
5721 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5722 out:
5723 wdev_unlock(wdev);
5724 return err;
5725 }
5726
5727 #define NL80211_FLAG_NEED_WIPHY 0x01
5728 #define NL80211_FLAG_NEED_NETDEV 0x02
5729 #define NL80211_FLAG_NEED_RTNL 0x04
5730 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5731 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5732 NL80211_FLAG_CHECK_NETDEV_UP)
5733
5734 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5735 struct genl_info *info)
5736 {
5737 struct cfg80211_registered_device *rdev;
5738 struct net_device *dev;
5739 int err;
5740 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5741
5742 if (rtnl)
5743 rtnl_lock();
5744
5745 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5746 rdev = cfg80211_get_dev_from_info(info);
5747 if (IS_ERR(rdev)) {
5748 if (rtnl)
5749 rtnl_unlock();
5750 return PTR_ERR(rdev);
5751 }
5752 info->user_ptr[0] = rdev;
5753 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5754 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5755 if (err) {
5756 if (rtnl)
5757 rtnl_unlock();
5758 return err;
5759 }
5760 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5761 !netif_running(dev)) {
5762 cfg80211_unlock_rdev(rdev);
5763 dev_put(dev);
5764 if (rtnl)
5765 rtnl_unlock();
5766 return -ENETDOWN;
5767 }
5768 info->user_ptr[0] = rdev;
5769 info->user_ptr[1] = dev;
5770 }
5771
5772 return 0;
5773 }
5774
5775 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5776 struct genl_info *info)
5777 {
5778 if (info->user_ptr[0])
5779 cfg80211_unlock_rdev(info->user_ptr[0]);
5780 if (info->user_ptr[1])
5781 dev_put(info->user_ptr[1]);
5782 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5783 rtnl_unlock();
5784 }
5785
5786 static struct genl_ops nl80211_ops[] = {
5787 {
5788 .cmd = NL80211_CMD_GET_WIPHY,
5789 .doit = nl80211_get_wiphy,
5790 .dumpit = nl80211_dump_wiphy,
5791 .policy = nl80211_policy,
5792 /* can be retrieved by unprivileged users */
5793 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5794 },
5795 {
5796 .cmd = NL80211_CMD_SET_WIPHY,
5797 .doit = nl80211_set_wiphy,
5798 .policy = nl80211_policy,
5799 .flags = GENL_ADMIN_PERM,
5800 .internal_flags = NL80211_FLAG_NEED_RTNL,
5801 },
5802 {
5803 .cmd = NL80211_CMD_GET_INTERFACE,
5804 .doit = nl80211_get_interface,
5805 .dumpit = nl80211_dump_interface,
5806 .policy = nl80211_policy,
5807 /* can be retrieved by unprivileged users */
5808 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5809 },
5810 {
5811 .cmd = NL80211_CMD_SET_INTERFACE,
5812 .doit = nl80211_set_interface,
5813 .policy = nl80211_policy,
5814 .flags = GENL_ADMIN_PERM,
5815 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5816 NL80211_FLAG_NEED_RTNL,
5817 },
5818 {
5819 .cmd = NL80211_CMD_NEW_INTERFACE,
5820 .doit = nl80211_new_interface,
5821 .policy = nl80211_policy,
5822 .flags = GENL_ADMIN_PERM,
5823 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5824 NL80211_FLAG_NEED_RTNL,
5825 },
5826 {
5827 .cmd = NL80211_CMD_DEL_INTERFACE,
5828 .doit = nl80211_del_interface,
5829 .policy = nl80211_policy,
5830 .flags = GENL_ADMIN_PERM,
5831 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5832 NL80211_FLAG_NEED_RTNL,
5833 },
5834 {
5835 .cmd = NL80211_CMD_GET_KEY,
5836 .doit = nl80211_get_key,
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_SET_KEY,
5844 .doit = nl80211_set_key,
5845 .policy = nl80211_policy,
5846 .flags = GENL_ADMIN_PERM,
5847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5848 NL80211_FLAG_NEED_RTNL,
5849 },
5850 {
5851 .cmd = NL80211_CMD_NEW_KEY,
5852 .doit = nl80211_new_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_DEL_KEY,
5860 .doit = nl80211_del_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_SET_BEACON,
5868 .policy = nl80211_policy,
5869 .flags = GENL_ADMIN_PERM,
5870 .doit = nl80211_addset_beacon,
5871 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5872 NL80211_FLAG_NEED_RTNL,
5873 },
5874 {
5875 .cmd = NL80211_CMD_NEW_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_DEL_BEACON,
5884 .policy = nl80211_policy,
5885 .flags = GENL_ADMIN_PERM,
5886 .doit = nl80211_del_beacon,
5887 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5888 NL80211_FLAG_NEED_RTNL,
5889 },
5890 {
5891 .cmd = NL80211_CMD_GET_STATION,
5892 .doit = nl80211_get_station,
5893 .dumpit = nl80211_dump_station,
5894 .policy = nl80211_policy,
5895 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5896 NL80211_FLAG_NEED_RTNL,
5897 },
5898 {
5899 .cmd = NL80211_CMD_SET_STATION,
5900 .doit = nl80211_set_station,
5901 .policy = nl80211_policy,
5902 .flags = GENL_ADMIN_PERM,
5903 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5904 NL80211_FLAG_NEED_RTNL,
5905 },
5906 {
5907 .cmd = NL80211_CMD_NEW_STATION,
5908 .doit = nl80211_new_station,
5909 .policy = nl80211_policy,
5910 .flags = GENL_ADMIN_PERM,
5911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5912 NL80211_FLAG_NEED_RTNL,
5913 },
5914 {
5915 .cmd = NL80211_CMD_DEL_STATION,
5916 .doit = nl80211_del_station,
5917 .policy = nl80211_policy,
5918 .flags = GENL_ADMIN_PERM,
5919 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5920 NL80211_FLAG_NEED_RTNL,
5921 },
5922 {
5923 .cmd = NL80211_CMD_GET_MPATH,
5924 .doit = nl80211_get_mpath,
5925 .dumpit = nl80211_dump_mpath,
5926 .policy = nl80211_policy,
5927 .flags = GENL_ADMIN_PERM,
5928 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5929 NL80211_FLAG_NEED_RTNL,
5930 },
5931 {
5932 .cmd = NL80211_CMD_SET_MPATH,
5933 .doit = nl80211_set_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_NEW_MPATH,
5941 .doit = nl80211_new_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_DEL_MPATH,
5949 .doit = nl80211_del_mpath,
5950 .policy = nl80211_policy,
5951 .flags = GENL_ADMIN_PERM,
5952 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5953 NL80211_FLAG_NEED_RTNL,
5954 },
5955 {
5956 .cmd = NL80211_CMD_SET_BSS,
5957 .doit = nl80211_set_bss,
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_GET_REG,
5965 .doit = nl80211_get_reg,
5966 .policy = nl80211_policy,
5967 /* can be retrieved by unprivileged users */
5968 },
5969 {
5970 .cmd = NL80211_CMD_SET_REG,
5971 .doit = nl80211_set_reg,
5972 .policy = nl80211_policy,
5973 .flags = GENL_ADMIN_PERM,
5974 },
5975 {
5976 .cmd = NL80211_CMD_REQ_SET_REG,
5977 .doit = nl80211_req_set_reg,
5978 .policy = nl80211_policy,
5979 .flags = GENL_ADMIN_PERM,
5980 },
5981 {
5982 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5983 .doit = nl80211_get_mesh_config,
5984 .policy = nl80211_policy,
5985 /* can be retrieved by unprivileged users */
5986 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5987 NL80211_FLAG_NEED_RTNL,
5988 },
5989 {
5990 .cmd = NL80211_CMD_SET_MESH_CONFIG,
5991 .doit = nl80211_update_mesh_config,
5992 .policy = nl80211_policy,
5993 .flags = GENL_ADMIN_PERM,
5994 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5995 NL80211_FLAG_NEED_RTNL,
5996 },
5997 {
5998 .cmd = NL80211_CMD_TRIGGER_SCAN,
5999 .doit = nl80211_trigger_scan,
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_GET_SCAN,
6007 .policy = nl80211_policy,
6008 .dumpit = nl80211_dump_scan,
6009 },
6010 {
6011 .cmd = NL80211_CMD_START_SCHED_SCAN,
6012 .doit = nl80211_start_sched_scan,
6013 .policy = nl80211_policy,
6014 .flags = GENL_ADMIN_PERM,
6015 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6016 NL80211_FLAG_NEED_RTNL,
6017 },
6018 {
6019 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6020 .doit = nl80211_stop_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_AUTHENTICATE,
6028 .doit = nl80211_authenticate,
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_ASSOCIATE,
6036 .doit = nl80211_associate,
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_DEAUTHENTICATE,
6044 .doit = nl80211_deauthenticate,
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_DISASSOCIATE,
6052 .doit = nl80211_disassociate,
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_JOIN_IBSS,
6060 .doit = nl80211_join_ibss,
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_LEAVE_IBSS,
6068 .doit = nl80211_leave_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 #ifdef CONFIG_NL80211_TESTMODE
6075 {
6076 .cmd = NL80211_CMD_TESTMODE,
6077 .doit = nl80211_testmode_do,
6078 .dumpit = nl80211_testmode_dump,
6079 .policy = nl80211_policy,
6080 .flags = GENL_ADMIN_PERM,
6081 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6082 NL80211_FLAG_NEED_RTNL,
6083 },
6084 #endif
6085 {
6086 .cmd = NL80211_CMD_CONNECT,
6087 .doit = nl80211_connect,
6088 .policy = nl80211_policy,
6089 .flags = GENL_ADMIN_PERM,
6090 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6091 NL80211_FLAG_NEED_RTNL,
6092 },
6093 {
6094 .cmd = NL80211_CMD_DISCONNECT,
6095 .doit = nl80211_disconnect,
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_SET_WIPHY_NETNS,
6103 .doit = nl80211_wiphy_netns,
6104 .policy = nl80211_policy,
6105 .flags = GENL_ADMIN_PERM,
6106 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6107 NL80211_FLAG_NEED_RTNL,
6108 },
6109 {
6110 .cmd = NL80211_CMD_GET_SURVEY,
6111 .policy = nl80211_policy,
6112 .dumpit = nl80211_dump_survey,
6113 },
6114 {
6115 .cmd = NL80211_CMD_SET_PMKSA,
6116 .doit = nl80211_setdel_pmksa,
6117 .policy = nl80211_policy,
6118 .flags = GENL_ADMIN_PERM,
6119 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6120 NL80211_FLAG_NEED_RTNL,
6121 },
6122 {
6123 .cmd = NL80211_CMD_DEL_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_FLUSH_PMKSA,
6132 .doit = nl80211_flush_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_REMAIN_ON_CHANNEL,
6140 .doit = nl80211_remain_on_channel,
6141 .policy = nl80211_policy,
6142 .flags = GENL_ADMIN_PERM,
6143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6144 NL80211_FLAG_NEED_RTNL,
6145 },
6146 {
6147 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6148 .doit = nl80211_cancel_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_SET_TX_BITRATE_MASK,
6156 .doit = nl80211_set_tx_bitrate_mask,
6157 .policy = nl80211_policy,
6158 .flags = GENL_ADMIN_PERM,
6159 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6160 NL80211_FLAG_NEED_RTNL,
6161 },
6162 {
6163 .cmd = NL80211_CMD_REGISTER_FRAME,
6164 .doit = nl80211_register_mgmt,
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_FRAME,
6172 .doit = nl80211_tx_mgmt,
6173 .policy = nl80211_policy,
6174 .flags = GENL_ADMIN_PERM,
6175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6176 NL80211_FLAG_NEED_RTNL,
6177 },
6178 {
6179 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6180 .doit = nl80211_tx_mgmt_cancel_wait,
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_SET_POWER_SAVE,
6188 .doit = nl80211_set_power_save,
6189 .policy = nl80211_policy,
6190 .flags = GENL_ADMIN_PERM,
6191 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6192 NL80211_FLAG_NEED_RTNL,
6193 },
6194 {
6195 .cmd = NL80211_CMD_GET_POWER_SAVE,
6196 .doit = nl80211_get_power_save,
6197 .policy = nl80211_policy,
6198 /* can be retrieved by unprivileged users */
6199 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6200 NL80211_FLAG_NEED_RTNL,
6201 },
6202 {
6203 .cmd = NL80211_CMD_SET_CQM,
6204 .doit = nl80211_set_cqm,
6205 .policy = nl80211_policy,
6206 .flags = GENL_ADMIN_PERM,
6207 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6208 NL80211_FLAG_NEED_RTNL,
6209 },
6210 {
6211 .cmd = NL80211_CMD_SET_CHANNEL,
6212 .doit = nl80211_set_channel,
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_WDS_PEER,
6220 .doit = nl80211_set_wds_peer,
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_JOIN_MESH,
6228 .doit = nl80211_join_mesh,
6229 .policy = nl80211_policy,
6230 .flags = GENL_ADMIN_PERM,
6231 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6232 NL80211_FLAG_NEED_RTNL,
6233 },
6234 {
6235 .cmd = NL80211_CMD_LEAVE_MESH,
6236 .doit = nl80211_leave_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_GET_WOWLAN,
6244 .doit = nl80211_get_wowlan,
6245 .policy = nl80211_policy,
6246 /* can be retrieved by unprivileged users */
6247 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6248 NL80211_FLAG_NEED_RTNL,
6249 },
6250 {
6251 .cmd = NL80211_CMD_SET_WOWLAN,
6252 .doit = nl80211_set_wowlan,
6253 .policy = nl80211_policy,
6254 .flags = GENL_ADMIN_PERM,
6255 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6256 NL80211_FLAG_NEED_RTNL,
6257 },
6258 {
6259 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6260 .doit = nl80211_set_rekey_data,
6261 .policy = nl80211_policy,
6262 .flags = GENL_ADMIN_PERM,
6263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6264 NL80211_FLAG_NEED_RTNL,
6265 },
6266 };
6267
6268 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6269 .name = "mlme",
6270 };
6271
6272 /* multicast groups */
6273 static struct genl_multicast_group nl80211_config_mcgrp = {
6274 .name = "config",
6275 };
6276 static struct genl_multicast_group nl80211_scan_mcgrp = {
6277 .name = "scan",
6278 };
6279 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6280 .name = "regulatory",
6281 };
6282
6283 /* notification functions */
6284
6285 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6286 {
6287 struct sk_buff *msg;
6288
6289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6290 if (!msg)
6291 return;
6292
6293 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6294 nlmsg_free(msg);
6295 return;
6296 }
6297
6298 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6299 nl80211_config_mcgrp.id, GFP_KERNEL);
6300 }
6301
6302 static int nl80211_add_scan_req(struct sk_buff *msg,
6303 struct cfg80211_registered_device *rdev)
6304 {
6305 struct cfg80211_scan_request *req = rdev->scan_req;
6306 struct nlattr *nest;
6307 int i;
6308
6309 ASSERT_RDEV_LOCK(rdev);
6310
6311 if (WARN_ON(!req))
6312 return 0;
6313
6314 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6315 if (!nest)
6316 goto nla_put_failure;
6317 for (i = 0; i < req->n_ssids; i++)
6318 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6319 nla_nest_end(msg, nest);
6320
6321 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6322 if (!nest)
6323 goto nla_put_failure;
6324 for (i = 0; i < req->n_channels; i++)
6325 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6326 nla_nest_end(msg, nest);
6327
6328 if (req->ie)
6329 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6330
6331 return 0;
6332 nla_put_failure:
6333 return -ENOBUFS;
6334 }
6335
6336 static int nl80211_send_scan_msg(struct sk_buff *msg,
6337 struct cfg80211_registered_device *rdev,
6338 struct net_device *netdev,
6339 u32 pid, u32 seq, int flags,
6340 u32 cmd)
6341 {
6342 void *hdr;
6343
6344 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6345 if (!hdr)
6346 return -1;
6347
6348 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6349 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6350
6351 /* ignore errors and send incomplete event anyway */
6352 nl80211_add_scan_req(msg, rdev);
6353
6354 return genlmsg_end(msg, hdr);
6355
6356 nla_put_failure:
6357 genlmsg_cancel(msg, hdr);
6358 return -EMSGSIZE;
6359 }
6360
6361 static int
6362 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6363 struct cfg80211_registered_device *rdev,
6364 struct net_device *netdev,
6365 u32 pid, u32 seq, int flags, u32 cmd)
6366 {
6367 void *hdr;
6368
6369 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6370 if (!hdr)
6371 return -1;
6372
6373 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6375
6376 return genlmsg_end(msg, hdr);
6377
6378 nla_put_failure:
6379 genlmsg_cancel(msg, hdr);
6380 return -EMSGSIZE;
6381 }
6382
6383 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6384 struct net_device *netdev)
6385 {
6386 struct sk_buff *msg;
6387
6388 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6389 if (!msg)
6390 return;
6391
6392 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6393 NL80211_CMD_TRIGGER_SCAN) < 0) {
6394 nlmsg_free(msg);
6395 return;
6396 }
6397
6398 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6399 nl80211_scan_mcgrp.id, GFP_KERNEL);
6400 }
6401
6402 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6403 struct net_device *netdev)
6404 {
6405 struct sk_buff *msg;
6406
6407 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6408 if (!msg)
6409 return;
6410
6411 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6412 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6413 nlmsg_free(msg);
6414 return;
6415 }
6416
6417 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6418 nl80211_scan_mcgrp.id, GFP_KERNEL);
6419 }
6420
6421 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6422 struct net_device *netdev)
6423 {
6424 struct sk_buff *msg;
6425
6426 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6427 if (!msg)
6428 return;
6429
6430 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6431 NL80211_CMD_SCAN_ABORTED) < 0) {
6432 nlmsg_free(msg);
6433 return;
6434 }
6435
6436 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6437 nl80211_scan_mcgrp.id, GFP_KERNEL);
6438 }
6439
6440 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6441 struct net_device *netdev)
6442 {
6443 struct sk_buff *msg;
6444
6445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6446 if (!msg)
6447 return;
6448
6449 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6450 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6451 nlmsg_free(msg);
6452 return;
6453 }
6454
6455 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6456 nl80211_scan_mcgrp.id, GFP_KERNEL);
6457 }
6458
6459 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6460 struct net_device *netdev, u32 cmd)
6461 {
6462 struct sk_buff *msg;
6463
6464 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6465 if (!msg)
6466 return;
6467
6468 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6469 nlmsg_free(msg);
6470 return;
6471 }
6472
6473 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6474 nl80211_scan_mcgrp.id, GFP_KERNEL);
6475 }
6476
6477 /*
6478 * This can happen on global regulatory changes or device specific settings
6479 * based on custom world regulatory domains.
6480 */
6481 void nl80211_send_reg_change_event(struct regulatory_request *request)
6482 {
6483 struct sk_buff *msg;
6484 void *hdr;
6485
6486 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6487 if (!msg)
6488 return;
6489
6490 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6491 if (!hdr) {
6492 nlmsg_free(msg);
6493 return;
6494 }
6495
6496 /* Userspace can always count this one always being set */
6497 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6498
6499 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6500 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6501 NL80211_REGDOM_TYPE_WORLD);
6502 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6503 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6504 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6505 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6506 request->intersect)
6507 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6508 NL80211_REGDOM_TYPE_INTERSECTION);
6509 else {
6510 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6511 NL80211_REGDOM_TYPE_COUNTRY);
6512 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6513 }
6514
6515 if (wiphy_idx_valid(request->wiphy_idx))
6516 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6517
6518 if (genlmsg_end(msg, hdr) < 0) {
6519 nlmsg_free(msg);
6520 return;
6521 }
6522
6523 rcu_read_lock();
6524 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6525 GFP_ATOMIC);
6526 rcu_read_unlock();
6527
6528 return;
6529
6530 nla_put_failure:
6531 genlmsg_cancel(msg, hdr);
6532 nlmsg_free(msg);
6533 }
6534
6535 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6536 struct net_device *netdev,
6537 const u8 *buf, size_t len,
6538 enum nl80211_commands cmd, gfp_t gfp)
6539 {
6540 struct sk_buff *msg;
6541 void *hdr;
6542
6543 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6544 if (!msg)
6545 return;
6546
6547 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6548 if (!hdr) {
6549 nlmsg_free(msg);
6550 return;
6551 }
6552
6553 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6554 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6555 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6556
6557 if (genlmsg_end(msg, hdr) < 0) {
6558 nlmsg_free(msg);
6559 return;
6560 }
6561
6562 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6563 nl80211_mlme_mcgrp.id, gfp);
6564 return;
6565
6566 nla_put_failure:
6567 genlmsg_cancel(msg, hdr);
6568 nlmsg_free(msg);
6569 }
6570
6571 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6572 struct net_device *netdev, const u8 *buf,
6573 size_t len, gfp_t gfp)
6574 {
6575 nl80211_send_mlme_event(rdev, netdev, buf, len,
6576 NL80211_CMD_AUTHENTICATE, gfp);
6577 }
6578
6579 void nl80211_send_rx_assoc(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_ASSOCIATE, gfp);
6585 }
6586
6587 void nl80211_send_deauth(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_DEAUTHENTICATE, gfp);
6593 }
6594
6595 void nl80211_send_disassoc(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_DISASSOCIATE, gfp);
6601 }
6602
6603 void nl80211_send_unprot_deauth(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_UNPROT_DEAUTHENTICATE, gfp);
6609 }
6610
6611 void nl80211_send_unprot_disassoc(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_DISASSOCIATE, gfp);
6617 }
6618
6619 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6620 struct net_device *netdev, int cmd,
6621 const u8 *addr, gfp_t gfp)
6622 {
6623 struct sk_buff *msg;
6624 void *hdr;
6625
6626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6627 if (!msg)
6628 return;
6629
6630 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6631 if (!hdr) {
6632 nlmsg_free(msg);
6633 return;
6634 }
6635
6636 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6637 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6638 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6639 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6640
6641 if (genlmsg_end(msg, hdr) < 0) {
6642 nlmsg_free(msg);
6643 return;
6644 }
6645
6646 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6647 nl80211_mlme_mcgrp.id, gfp);
6648 return;
6649
6650 nla_put_failure:
6651 genlmsg_cancel(msg, hdr);
6652 nlmsg_free(msg);
6653 }
6654
6655 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6656 struct net_device *netdev, const u8 *addr,
6657 gfp_t gfp)
6658 {
6659 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6660 addr, gfp);
6661 }
6662
6663 void nl80211_send_assoc_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_ASSOCIATE,
6668 addr, gfp);
6669 }
6670
6671 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6672 struct net_device *netdev, const u8 *bssid,
6673 const u8 *req_ie, size_t req_ie_len,
6674 const u8 *resp_ie, size_t resp_ie_len,
6675 u16 status, gfp_t gfp)
6676 {
6677 struct sk_buff *msg;
6678 void *hdr;
6679
6680 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6681 if (!msg)
6682 return;
6683
6684 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6685 if (!hdr) {
6686 nlmsg_free(msg);
6687 return;
6688 }
6689
6690 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6691 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6692 if (bssid)
6693 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6694 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6695 if (req_ie)
6696 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6697 if (resp_ie)
6698 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6699
6700 if (genlmsg_end(msg, hdr) < 0) {
6701 nlmsg_free(msg);
6702 return;
6703 }
6704
6705 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6706 nl80211_mlme_mcgrp.id, gfp);
6707 return;
6708
6709 nla_put_failure:
6710 genlmsg_cancel(msg, hdr);
6711 nlmsg_free(msg);
6712
6713 }
6714
6715 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6716 struct net_device *netdev, const u8 *bssid,
6717 const u8 *req_ie, size_t req_ie_len,
6718 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6719 {
6720 struct sk_buff *msg;
6721 void *hdr;
6722
6723 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6724 if (!msg)
6725 return;
6726
6727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6728 if (!hdr) {
6729 nlmsg_free(msg);
6730 return;
6731 }
6732
6733 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6734 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6735 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6736 if (req_ie)
6737 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6738 if (resp_ie)
6739 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6740
6741 if (genlmsg_end(msg, hdr) < 0) {
6742 nlmsg_free(msg);
6743 return;
6744 }
6745
6746 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6747 nl80211_mlme_mcgrp.id, gfp);
6748 return;
6749
6750 nla_put_failure:
6751 genlmsg_cancel(msg, hdr);
6752 nlmsg_free(msg);
6753
6754 }
6755
6756 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6757 struct net_device *netdev, u16 reason,
6758 const u8 *ie, size_t ie_len, bool from_ap)
6759 {
6760 struct sk_buff *msg;
6761 void *hdr;
6762
6763 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6764 if (!msg)
6765 return;
6766
6767 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6768 if (!hdr) {
6769 nlmsg_free(msg);
6770 return;
6771 }
6772
6773 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6774 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6775 if (from_ap && reason)
6776 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6777 if (from_ap)
6778 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6779 if (ie)
6780 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6781
6782 if (genlmsg_end(msg, hdr) < 0) {
6783 nlmsg_free(msg);
6784 return;
6785 }
6786
6787 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6788 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6789 return;
6790
6791 nla_put_failure:
6792 genlmsg_cancel(msg, hdr);
6793 nlmsg_free(msg);
6794
6795 }
6796
6797 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6798 struct net_device *netdev, const u8 *bssid,
6799 gfp_t gfp)
6800 {
6801 struct sk_buff *msg;
6802 void *hdr;
6803
6804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6805 if (!msg)
6806 return;
6807
6808 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6809 if (!hdr) {
6810 nlmsg_free(msg);
6811 return;
6812 }
6813
6814 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6815 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6816 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6817
6818 if (genlmsg_end(msg, hdr) < 0) {
6819 nlmsg_free(msg);
6820 return;
6821 }
6822
6823 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6824 nl80211_mlme_mcgrp.id, gfp);
6825 return;
6826
6827 nla_put_failure:
6828 genlmsg_cancel(msg, hdr);
6829 nlmsg_free(msg);
6830 }
6831
6832 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6833 struct net_device *netdev,
6834 const u8 *macaddr, const u8* ie, u8 ie_len,
6835 gfp_t gfp)
6836 {
6837 struct sk_buff *msg;
6838 void *hdr;
6839
6840 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6841 if (!msg)
6842 return;
6843
6844 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6845 if (!hdr) {
6846 nlmsg_free(msg);
6847 return;
6848 }
6849
6850 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6851 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6852 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6853 if (ie_len && ie)
6854 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6855
6856 if (genlmsg_end(msg, hdr) < 0) {
6857 nlmsg_free(msg);
6858 return;
6859 }
6860
6861 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6862 nl80211_mlme_mcgrp.id, gfp);
6863 return;
6864
6865 nla_put_failure:
6866 genlmsg_cancel(msg, hdr);
6867 nlmsg_free(msg);
6868 }
6869
6870 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6871 struct net_device *netdev, const u8 *addr,
6872 enum nl80211_key_type key_type, int key_id,
6873 const u8 *tsc, gfp_t gfp)
6874 {
6875 struct sk_buff *msg;
6876 void *hdr;
6877
6878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6879 if (!msg)
6880 return;
6881
6882 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6883 if (!hdr) {
6884 nlmsg_free(msg);
6885 return;
6886 }
6887
6888 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6889 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6890 if (addr)
6891 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6892 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6893 if (key_id != -1)
6894 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6895 if (tsc)
6896 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6897
6898 if (genlmsg_end(msg, hdr) < 0) {
6899 nlmsg_free(msg);
6900 return;
6901 }
6902
6903 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6904 nl80211_mlme_mcgrp.id, gfp);
6905 return;
6906
6907 nla_put_failure:
6908 genlmsg_cancel(msg, hdr);
6909 nlmsg_free(msg);
6910 }
6911
6912 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6913 struct ieee80211_channel *channel_before,
6914 struct ieee80211_channel *channel_after)
6915 {
6916 struct sk_buff *msg;
6917 void *hdr;
6918 struct nlattr *nl_freq;
6919
6920 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6921 if (!msg)
6922 return;
6923
6924 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6925 if (!hdr) {
6926 nlmsg_free(msg);
6927 return;
6928 }
6929
6930 /*
6931 * Since we are applying the beacon hint to a wiphy we know its
6932 * wiphy_idx is valid
6933 */
6934 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6935
6936 /* Before */
6937 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6938 if (!nl_freq)
6939 goto nla_put_failure;
6940 if (nl80211_msg_put_channel(msg, channel_before))
6941 goto nla_put_failure;
6942 nla_nest_end(msg, nl_freq);
6943
6944 /* After */
6945 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6946 if (!nl_freq)
6947 goto nla_put_failure;
6948 if (nl80211_msg_put_channel(msg, channel_after))
6949 goto nla_put_failure;
6950 nla_nest_end(msg, nl_freq);
6951
6952 if (genlmsg_end(msg, hdr) < 0) {
6953 nlmsg_free(msg);
6954 return;
6955 }
6956
6957 rcu_read_lock();
6958 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6959 GFP_ATOMIC);
6960 rcu_read_unlock();
6961
6962 return;
6963
6964 nla_put_failure:
6965 genlmsg_cancel(msg, hdr);
6966 nlmsg_free(msg);
6967 }
6968
6969 static void nl80211_send_remain_on_chan_event(
6970 int cmd, struct cfg80211_registered_device *rdev,
6971 struct net_device *netdev, u64 cookie,
6972 struct ieee80211_channel *chan,
6973 enum nl80211_channel_type channel_type,
6974 unsigned int duration, gfp_t gfp)
6975 {
6976 struct sk_buff *msg;
6977 void *hdr;
6978
6979 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6980 if (!msg)
6981 return;
6982
6983 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6984 if (!hdr) {
6985 nlmsg_free(msg);
6986 return;
6987 }
6988
6989 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6990 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6991 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
6992 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
6993 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6994
6995 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
6996 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
6997
6998 if (genlmsg_end(msg, hdr) < 0) {
6999 nlmsg_free(msg);
7000 return;
7001 }
7002
7003 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7004 nl80211_mlme_mcgrp.id, gfp);
7005 return;
7006
7007 nla_put_failure:
7008 genlmsg_cancel(msg, hdr);
7009 nlmsg_free(msg);
7010 }
7011
7012 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7013 struct net_device *netdev, u64 cookie,
7014 struct ieee80211_channel *chan,
7015 enum nl80211_channel_type channel_type,
7016 unsigned int duration, gfp_t gfp)
7017 {
7018 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7019 rdev, netdev, cookie, chan,
7020 channel_type, duration, gfp);
7021 }
7022
7023 void nl80211_send_remain_on_channel_cancel(
7024 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7025 u64 cookie, struct ieee80211_channel *chan,
7026 enum nl80211_channel_type channel_type, gfp_t gfp)
7027 {
7028 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7029 rdev, netdev, cookie, chan,
7030 channel_type, 0, gfp);
7031 }
7032
7033 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7034 struct net_device *dev, const u8 *mac_addr,
7035 struct station_info *sinfo, gfp_t gfp)
7036 {
7037 struct sk_buff *msg;
7038
7039 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7040 if (!msg)
7041 return;
7042
7043 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7044 nlmsg_free(msg);
7045 return;
7046 }
7047
7048 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7049 nl80211_mlme_mcgrp.id, gfp);
7050 }
7051
7052 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7053 struct net_device *dev, const u8 *mac_addr,
7054 gfp_t gfp)
7055 {
7056 struct sk_buff *msg;
7057 void *hdr;
7058
7059 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7060 if (!msg)
7061 return;
7062
7063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7064 if (!hdr) {
7065 nlmsg_free(msg);
7066 return;
7067 }
7068
7069 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7070 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7071
7072 if (genlmsg_end(msg, hdr) < 0) {
7073 nlmsg_free(msg);
7074 return;
7075 }
7076
7077 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7078 nl80211_mlme_mcgrp.id, gfp);
7079 return;
7080
7081 nla_put_failure:
7082 genlmsg_cancel(msg, hdr);
7083 nlmsg_free(msg);
7084 }
7085
7086 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7087 struct net_device *netdev, u32 nlpid,
7088 int freq, const u8 *buf, size_t len, gfp_t gfp)
7089 {
7090 struct sk_buff *msg;
7091 void *hdr;
7092 int err;
7093
7094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7095 if (!msg)
7096 return -ENOMEM;
7097
7098 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7099 if (!hdr) {
7100 nlmsg_free(msg);
7101 return -ENOMEM;
7102 }
7103
7104 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7105 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7106 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7107 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7108
7109 err = genlmsg_end(msg, hdr);
7110 if (err < 0) {
7111 nlmsg_free(msg);
7112 return err;
7113 }
7114
7115 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7116 if (err < 0)
7117 return err;
7118 return 0;
7119
7120 nla_put_failure:
7121 genlmsg_cancel(msg, hdr);
7122 nlmsg_free(msg);
7123 return -ENOBUFS;
7124 }
7125
7126 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7127 struct net_device *netdev, u64 cookie,
7128 const u8 *buf, size_t len, bool ack,
7129 gfp_t gfp)
7130 {
7131 struct sk_buff *msg;
7132 void *hdr;
7133
7134 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7135 if (!msg)
7136 return;
7137
7138 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7139 if (!hdr) {
7140 nlmsg_free(msg);
7141 return;
7142 }
7143
7144 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7145 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7146 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7147 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7148 if (ack)
7149 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7150
7151 if (genlmsg_end(msg, hdr) < 0) {
7152 nlmsg_free(msg);
7153 return;
7154 }
7155
7156 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7157 return;
7158
7159 nla_put_failure:
7160 genlmsg_cancel(msg, hdr);
7161 nlmsg_free(msg);
7162 }
7163
7164 void
7165 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7166 struct net_device *netdev,
7167 enum nl80211_cqm_rssi_threshold_event rssi_event,
7168 gfp_t gfp)
7169 {
7170 struct sk_buff *msg;
7171 struct nlattr *pinfoattr;
7172 void *hdr;
7173
7174 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7175 if (!msg)
7176 return;
7177
7178 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7179 if (!hdr) {
7180 nlmsg_free(msg);
7181 return;
7182 }
7183
7184 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7185 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7186
7187 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7188 if (!pinfoattr)
7189 goto nla_put_failure;
7190
7191 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7192 rssi_event);
7193
7194 nla_nest_end(msg, pinfoattr);
7195
7196 if (genlmsg_end(msg, hdr) < 0) {
7197 nlmsg_free(msg);
7198 return;
7199 }
7200
7201 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7202 nl80211_mlme_mcgrp.id, gfp);
7203 return;
7204
7205 nla_put_failure:
7206 genlmsg_cancel(msg, hdr);
7207 nlmsg_free(msg);
7208 }
7209
7210 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7211 struct net_device *netdev, const u8 *bssid,
7212 const u8 *replay_ctr, gfp_t gfp)
7213 {
7214 struct sk_buff *msg;
7215 struct nlattr *rekey_attr;
7216 void *hdr;
7217
7218 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7219 if (!msg)
7220 return;
7221
7222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7223 if (!hdr) {
7224 nlmsg_free(msg);
7225 return;
7226 }
7227
7228 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7229 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7230 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7231
7232 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7233 if (!rekey_attr)
7234 goto nla_put_failure;
7235
7236 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7237 NL80211_REPLAY_CTR_LEN, replay_ctr);
7238
7239 nla_nest_end(msg, rekey_attr);
7240
7241 if (genlmsg_end(msg, hdr) < 0) {
7242 nlmsg_free(msg);
7243 return;
7244 }
7245
7246 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7247 nl80211_mlme_mcgrp.id, gfp);
7248 return;
7249
7250 nla_put_failure:
7251 genlmsg_cancel(msg, hdr);
7252 nlmsg_free(msg);
7253 }
7254
7255 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7256 struct net_device *netdev, int index,
7257 const u8 *bssid, bool preauth, gfp_t gfp)
7258 {
7259 struct sk_buff *msg;
7260 struct nlattr *attr;
7261 void *hdr;
7262
7263 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7264 if (!msg)
7265 return;
7266
7267 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7268 if (!hdr) {
7269 nlmsg_free(msg);
7270 return;
7271 }
7272
7273 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7274 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7275
7276 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7277 if (!attr)
7278 goto nla_put_failure;
7279
7280 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7281 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7282 if (preauth)
7283 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7284
7285 nla_nest_end(msg, attr);
7286
7287 if (genlmsg_end(msg, hdr) < 0) {
7288 nlmsg_free(msg);
7289 return;
7290 }
7291
7292 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7293 nl80211_mlme_mcgrp.id, gfp);
7294 return;
7295
7296 nla_put_failure:
7297 genlmsg_cancel(msg, hdr);
7298 nlmsg_free(msg);
7299 }
7300
7301 void
7302 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7303 struct net_device *netdev, const u8 *peer,
7304 u32 num_packets, gfp_t gfp)
7305 {
7306 struct sk_buff *msg;
7307 struct nlattr *pinfoattr;
7308 void *hdr;
7309
7310 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7311 if (!msg)
7312 return;
7313
7314 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7315 if (!hdr) {
7316 nlmsg_free(msg);
7317 return;
7318 }
7319
7320 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7321 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7322 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7323
7324 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7325 if (!pinfoattr)
7326 goto nla_put_failure;
7327
7328 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7329
7330 nla_nest_end(msg, pinfoattr);
7331
7332 if (genlmsg_end(msg, hdr) < 0) {
7333 nlmsg_free(msg);
7334 return;
7335 }
7336
7337 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7338 nl80211_mlme_mcgrp.id, gfp);
7339 return;
7340
7341 nla_put_failure:
7342 genlmsg_cancel(msg, hdr);
7343 nlmsg_free(msg);
7344 }
7345
7346 static int nl80211_netlink_notify(struct notifier_block * nb,
7347 unsigned long state,
7348 void *_notify)
7349 {
7350 struct netlink_notify *notify = _notify;
7351 struct cfg80211_registered_device *rdev;
7352 struct wireless_dev *wdev;
7353
7354 if (state != NETLINK_URELEASE)
7355 return NOTIFY_DONE;
7356
7357 rcu_read_lock();
7358
7359 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7360 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7361 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7362
7363 rcu_read_unlock();
7364
7365 return NOTIFY_DONE;
7366 }
7367
7368 static struct notifier_block nl80211_netlink_notifier = {
7369 .notifier_call = nl80211_netlink_notify,
7370 };
7371
7372 /* initialisation/exit functions */
7373
7374 int nl80211_init(void)
7375 {
7376 int err;
7377
7378 err = genl_register_family_with_ops(&nl80211_fam,
7379 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7380 if (err)
7381 return err;
7382
7383 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7384 if (err)
7385 goto err_out;
7386
7387 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7388 if (err)
7389 goto err_out;
7390
7391 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7392 if (err)
7393 goto err_out;
7394
7395 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7396 if (err)
7397 goto err_out;
7398
7399 #ifdef CONFIG_NL80211_TESTMODE
7400 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7401 if (err)
7402 goto err_out;
7403 #endif
7404
7405 err = netlink_register_notifier(&nl80211_netlink_notifier);
7406 if (err)
7407 goto err_out;
7408
7409 return 0;
7410 err_out:
7411 genl_unregister_family(&nl80211_fam);
7412 return err;
7413 }
7414
7415 void nl80211_exit(void)
7416 {
7417 netlink_unregister_notifier(&nl80211_netlink_notifier);
7418 genl_unregister_family(&nl80211_fam);
7419 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree