?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
cfg80211: verify format of uAPSD information
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / wireless / nl80211.c
blob11089541bb031b8735c9b5d7ec2e1550a959a839
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_info_ifindex(struct genl_info *info,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 struct nlattr **attrs = info->attrs;
55 int ifindex;
56
57 if (!attrs[NL80211_ATTR_IFINDEX])
58 return -EINVAL;
59
60 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
61 *dev = dev_get_by_index(genl_info_net(info), ifindex);
62 if (!*dev)
63 return -ENODEV;
64
65 *rdev = cfg80211_get_dev_from_ifindex(genl_info_net(info), ifindex);
66 if (IS_ERR(*rdev)) {
67 dev_put(*dev);
68 return PTR_ERR(*rdev);
69 }
70
71 return 0;
72 }
73
74 /* policy for the attributes */
75 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
76 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
77 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
78 .len = 20-1 },
79 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
80 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
82 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
84 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
86 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
87
88 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
90 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
91
92 [NL80211_ATTR_MAC] = { .type = NLA_BINARY, .len = ETH_ALEN },
93 [NL80211_ATTR_PREV_BSSID] = { .type = NLA_BINARY, .len = ETH_ALEN },
94
95 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
96 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
97 .len = WLAN_MAX_KEY_LEN },
98 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
99 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
100 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
101 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
102 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
103
104 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
105 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
106 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
107 .len = IEEE80211_MAX_DATA_LEN },
108 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
109 .len = IEEE80211_MAX_DATA_LEN },
110 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
111 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
112 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
113 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
114 .len = NL80211_MAX_SUPP_RATES },
115 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
116 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
117 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
118 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
119 .len = IEEE80211_MAX_MESH_ID_LEN },
120 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
121
122 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
123 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
124
125 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
128 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
129 .len = NL80211_MAX_SUPP_RATES },
130 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
131
132 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
133 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
134
135 [NL80211_ATTR_HT_CAPABILITY] = { .type = NLA_BINARY,
136 .len = NL80211_HT_CAPABILITY_LEN },
137
138 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
139 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
140 .len = IEEE80211_MAX_DATA_LEN },
141 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
142 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
143
144 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
145 .len = IEEE80211_MAX_SSID_LEN },
146 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
147 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
148 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
149 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
150 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
151 [NL80211_ATTR_STA_FLAGS2] = {
152 .len = sizeof(struct nl80211_sta_flag_update),
153 },
154 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
156 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
157 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
158 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
159 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
160 [NL80211_ATTR_PID] = { .type = NLA_U32 },
161 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
162 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
163 .len = WLAN_PMKID_LEN },
164 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
165 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
166 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
167 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
168 .len = IEEE80211_MAX_DATA_LEN },
169 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
170 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
171 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
172 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
173 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
174 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
175 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
176 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
177 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
178 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
179 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
180 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
181 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
182 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
183 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
184 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
185 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
186 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
187 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
188 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
191 .len = IEEE80211_MAX_DATA_LEN },
192 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
193 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
194 };
195
196 /* policy for the key attributes */
197 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
198 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
199 [NL80211_KEY_IDX] = { .type = NLA_U8 },
200 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
201 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 8 },
202 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
203 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
204 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
205 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
206 };
207
208 /* policy for the key default flags */
209 static const struct nla_policy
210 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
211 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
212 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
213 };
214
215 /* policy for WoWLAN attributes */
216 static const struct nla_policy
217 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
218 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
219 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
220 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
221 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
222 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
223 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
224 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
225 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
226 };
227
228 /* policy for GTK rekey offload attributes */
229 static const struct nla_policy
230 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
231 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
232 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
233 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
234 };
235
236 static const struct nla_policy
237 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
238 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
239 .len = IEEE80211_MAX_SSID_LEN },
240 };
241
242 /* ifidx get helper */
243 static int nl80211_get_ifidx(struct netlink_callback *cb)
244 {
245 int res;
246
247 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
248 nl80211_fam.attrbuf, nl80211_fam.maxattr,
249 nl80211_policy);
250 if (res)
251 return res;
252
253 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
254 return -EINVAL;
255
256 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
257 if (!res)
258 return -EINVAL;
259 return res;
260 }
261
262 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
263 struct netlink_callback *cb,
264 struct cfg80211_registered_device **rdev,
265 struct net_device **dev)
266 {
267 int ifidx = cb->args[0];
268 int err;
269
270 if (!ifidx)
271 ifidx = nl80211_get_ifidx(cb);
272 if (ifidx < 0)
273 return ifidx;
274
275 cb->args[0] = ifidx;
276
277 rtnl_lock();
278
279 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
280 if (!*dev) {
281 err = -ENODEV;
282 goto out_rtnl;
283 }
284
285 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
286 if (IS_ERR(*rdev)) {
287 err = PTR_ERR(*rdev);
288 goto out_rtnl;
289 }
290
291 return 0;
292 out_rtnl:
293 rtnl_unlock();
294 return err;
295 }
296
297 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
298 {
299 cfg80211_unlock_rdev(rdev);
300 rtnl_unlock();
301 }
302
303 /* IE validation */
304 static bool is_valid_ie_attr(const struct nlattr *attr)
305 {
306 const u8 *pos;
307 int len;
308
309 if (!attr)
310 return true;
311
312 pos = nla_data(attr);
313 len = nla_len(attr);
314
315 while (len) {
316 u8 elemlen;
317
318 if (len < 2)
319 return false;
320 len -= 2;
321
322 elemlen = pos[1];
323 if (elemlen > len)
324 return false;
325
326 len -= elemlen;
327 pos += 2 + elemlen;
328 }
329
330 return true;
331 }
332
333 /* message building helper */
334 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
335 int flags, u8 cmd)
336 {
337 /* since there is no private header just add the generic one */
338 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
339 }
340
341 static int nl80211_msg_put_channel(struct sk_buff *msg,
342 struct ieee80211_channel *chan)
343 {
344 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
345 chan->center_freq);
346
347 if (chan->flags & IEEE80211_CHAN_DISABLED)
348 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
349 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
350 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
351 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
352 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
353 if (chan->flags & IEEE80211_CHAN_RADAR)
354 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
355
356 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
357 DBM_TO_MBM(chan->max_power));
358
359 return 0;
360
361 nla_put_failure:
362 return -ENOBUFS;
363 }
364
365 /* netlink command implementations */
366
367 struct key_parse {
368 struct key_params p;
369 int idx;
370 int type;
371 bool def, defmgmt;
372 bool def_uni, def_multi;
373 };
374
375 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
376 {
377 struct nlattr *tb[NL80211_KEY_MAX + 1];
378 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
379 nl80211_key_policy);
380 if (err)
381 return err;
382
383 k->def = !!tb[NL80211_KEY_DEFAULT];
384 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
385
386 if (k->def) {
387 k->def_uni = true;
388 k->def_multi = true;
389 }
390 if (k->defmgmt)
391 k->def_multi = true;
392
393 if (tb[NL80211_KEY_IDX])
394 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
395
396 if (tb[NL80211_KEY_DATA]) {
397 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
398 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
399 }
400
401 if (tb[NL80211_KEY_SEQ]) {
402 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
403 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
404 }
405
406 if (tb[NL80211_KEY_CIPHER])
407 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
408
409 if (tb[NL80211_KEY_TYPE]) {
410 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
411 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
412 return -EINVAL;
413 }
414
415 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
416 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
417 int err = nla_parse_nested(kdt,
418 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
419 tb[NL80211_KEY_DEFAULT_TYPES],
420 nl80211_key_default_policy);
421 if (err)
422 return err;
423
424 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
425 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
426 }
427
428 return 0;
429 }
430
431 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
432 {
433 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
434 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
435 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
436 }
437
438 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
439 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
440 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
441 }
442
443 if (info->attrs[NL80211_ATTR_KEY_IDX])
444 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
445
446 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
447 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
448
449 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
450 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
451
452 if (k->def) {
453 k->def_uni = true;
454 k->def_multi = true;
455 }
456 if (k->defmgmt)
457 k->def_multi = true;
458
459 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
460 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
461 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
462 return -EINVAL;
463 }
464
465 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
466 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
467 int err = nla_parse_nested(
468 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
469 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
470 nl80211_key_default_policy);
471 if (err)
472 return err;
473
474 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
475 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
476 }
477
478 return 0;
479 }
480
481 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
482 {
483 int err;
484
485 memset(k, 0, sizeof(*k));
486 k->idx = -1;
487 k->type = -1;
488
489 if (info->attrs[NL80211_ATTR_KEY])
490 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
491 else
492 err = nl80211_parse_key_old(info, k);
493
494 if (err)
495 return err;
496
497 if (k->def && k->defmgmt)
498 return -EINVAL;
499
500 if (k->defmgmt) {
501 if (k->def_uni || !k->def_multi)
502 return -EINVAL;
503 }
504
505 if (k->idx != -1) {
506 if (k->defmgmt) {
507 if (k->idx < 4 || k->idx > 5)
508 return -EINVAL;
509 } else if (k->def) {
510 if (k->idx < 0 || k->idx > 3)
511 return -EINVAL;
512 } else {
513 if (k->idx < 0 || k->idx > 5)
514 return -EINVAL;
515 }
516 }
517
518 return 0;
519 }
520
521 static struct cfg80211_cached_keys *
522 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
523 struct nlattr *keys)
524 {
525 struct key_parse parse;
526 struct nlattr *key;
527 struct cfg80211_cached_keys *result;
528 int rem, err, def = 0;
529
530 result = kzalloc(sizeof(*result), GFP_KERNEL);
531 if (!result)
532 return ERR_PTR(-ENOMEM);
533
534 result->def = -1;
535 result->defmgmt = -1;
536
537 nla_for_each_nested(key, keys, rem) {
538 memset(&parse, 0, sizeof(parse));
539 parse.idx = -1;
540
541 err = nl80211_parse_key_new(key, &parse);
542 if (err)
543 goto error;
544 err = -EINVAL;
545 if (!parse.p.key)
546 goto error;
547 if (parse.idx < 0 || parse.idx > 4)
548 goto error;
549 if (parse.def) {
550 if (def)
551 goto error;
552 def = 1;
553 result->def = parse.idx;
554 if (!parse.def_uni || !parse.def_multi)
555 goto error;
556 } else if (parse.defmgmt)
557 goto error;
558 err = cfg80211_validate_key_settings(rdev, &parse.p,
559 parse.idx, false, NULL);
560 if (err)
561 goto error;
562 result->params[parse.idx].cipher = parse.p.cipher;
563 result->params[parse.idx].key_len = parse.p.key_len;
564 result->params[parse.idx].key = result->data[parse.idx];
565 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
566 }
567
568 return result;
569 error:
570 kfree(result);
571 return ERR_PTR(err);
572 }
573
574 static int nl80211_key_allowed(struct wireless_dev *wdev)
575 {
576 ASSERT_WDEV_LOCK(wdev);
577
578 switch (wdev->iftype) {
579 case NL80211_IFTYPE_AP:
580 case NL80211_IFTYPE_AP_VLAN:
581 case NL80211_IFTYPE_P2P_GO:
582 case NL80211_IFTYPE_MESH_POINT:
583 break;
584 case NL80211_IFTYPE_ADHOC:
585 if (!wdev->current_bss)
586 return -ENOLINK;
587 break;
588 case NL80211_IFTYPE_STATION:
589 case NL80211_IFTYPE_P2P_CLIENT:
590 if (wdev->sme_state != CFG80211_SME_CONNECTED)
591 return -ENOLINK;
592 break;
593 default:
594 return -EINVAL;
595 }
596
597 return 0;
598 }
599
600 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
601 {
602 struct nlattr *nl_modes = nla_nest_start(msg, attr);
603 int i;
604
605 if (!nl_modes)
606 goto nla_put_failure;
607
608 i = 0;
609 while (ifmodes) {
610 if (ifmodes & 1)
611 NLA_PUT_FLAG(msg, i);
612 ifmodes >>= 1;
613 i++;
614 }
615
616 nla_nest_end(msg, nl_modes);
617 return 0;
618
619 nla_put_failure:
620 return -ENOBUFS;
621 }
622
623 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
624 struct sk_buff *msg)
625 {
626 struct nlattr *nl_combis;
627 int i, j;
628
629 nl_combis = nla_nest_start(msg,
630 NL80211_ATTR_INTERFACE_COMBINATIONS);
631 if (!nl_combis)
632 goto nla_put_failure;
633
634 for (i = 0; i < wiphy->n_iface_combinations; i++) {
635 const struct ieee80211_iface_combination *c;
636 struct nlattr *nl_combi, *nl_limits;
637
638 c = &wiphy->iface_combinations[i];
639
640 nl_combi = nla_nest_start(msg, i + 1);
641 if (!nl_combi)
642 goto nla_put_failure;
643
644 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
645 if (!nl_limits)
646 goto nla_put_failure;
647
648 for (j = 0; j < c->n_limits; j++) {
649 struct nlattr *nl_limit;
650
651 nl_limit = nla_nest_start(msg, j + 1);
652 if (!nl_limit)
653 goto nla_put_failure;
654 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
655 c->limits[j].max);
656 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
657 c->limits[j].types))
658 goto nla_put_failure;
659 nla_nest_end(msg, nl_limit);
660 }
661
662 nla_nest_end(msg, nl_limits);
663
664 if (c->beacon_int_infra_match)
665 NLA_PUT_FLAG(msg,
666 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
667 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
668 c->num_different_channels);
669 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
670 c->max_interfaces);
671
672 nla_nest_end(msg, nl_combi);
673 }
674
675 nla_nest_end(msg, nl_combis);
676
677 return 0;
678 nla_put_failure:
679 return -ENOBUFS;
680 }
681
682 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
683 struct cfg80211_registered_device *dev)
684 {
685 void *hdr;
686 struct nlattr *nl_bands, *nl_band;
687 struct nlattr *nl_freqs, *nl_freq;
688 struct nlattr *nl_rates, *nl_rate;
689 struct nlattr *nl_cmds;
690 enum ieee80211_band band;
691 struct ieee80211_channel *chan;
692 struct ieee80211_rate *rate;
693 int i;
694 const struct ieee80211_txrx_stypes *mgmt_stypes =
695 dev->wiphy.mgmt_stypes;
696
697 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
698 if (!hdr)
699 return -1;
700
701 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
702 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
703
704 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
705 cfg80211_rdev_list_generation);
706
707 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
708 dev->wiphy.retry_short);
709 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
710 dev->wiphy.retry_long);
711 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
712 dev->wiphy.frag_threshold);
713 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
714 dev->wiphy.rts_threshold);
715 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
716 dev->wiphy.coverage_class);
717 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
718 dev->wiphy.max_scan_ssids);
719 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
720 dev->wiphy.max_sched_scan_ssids);
721 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
722 dev->wiphy.max_scan_ie_len);
723 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
724 dev->wiphy.max_sched_scan_ie_len);
725 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
726 dev->wiphy.max_match_sets);
727
728 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
729 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
730 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
731 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
732 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
733 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
734
735 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
736 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
737
738 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
739 sizeof(u32) * dev->wiphy.n_cipher_suites,
740 dev->wiphy.cipher_suites);
741
742 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
743 dev->wiphy.max_num_pmkids);
744
745 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
746 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
747
748 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
749 dev->wiphy.available_antennas_tx);
750 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
751 dev->wiphy.available_antennas_rx);
752
753 if ((dev->wiphy.available_antennas_tx ||
754 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
755 u32 tx_ant = 0, rx_ant = 0;
756 int res;
757 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
758 if (!res) {
759 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
760 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
761 }
762 }
763
764 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
765 dev->wiphy.interface_modes))
766 goto nla_put_failure;
767
768 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
769 if (!nl_bands)
770 goto nla_put_failure;
771
772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
773 if (!dev->wiphy.bands[band])
774 continue;
775
776 nl_band = nla_nest_start(msg, band);
777 if (!nl_band)
778 goto nla_put_failure;
779
780 /* add HT info */
781 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
782 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
783 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
784 &dev->wiphy.bands[band]->ht_cap.mcs);
785 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
786 dev->wiphy.bands[band]->ht_cap.cap);
787 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
788 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
789 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
790 dev->wiphy.bands[band]->ht_cap.ampdu_density);
791 }
792
793 /* add frequencies */
794 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
795 if (!nl_freqs)
796 goto nla_put_failure;
797
798 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
799 nl_freq = nla_nest_start(msg, i);
800 if (!nl_freq)
801 goto nla_put_failure;
802
803 chan = &dev->wiphy.bands[band]->channels[i];
804
805 if (nl80211_msg_put_channel(msg, chan))
806 goto nla_put_failure;
807
808 nla_nest_end(msg, nl_freq);
809 }
810
811 nla_nest_end(msg, nl_freqs);
812
813 /* add bitrates */
814 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
815 if (!nl_rates)
816 goto nla_put_failure;
817
818 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
819 nl_rate = nla_nest_start(msg, i);
820 if (!nl_rate)
821 goto nla_put_failure;
822
823 rate = &dev->wiphy.bands[band]->bitrates[i];
824 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
825 rate->bitrate);
826 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
827 NLA_PUT_FLAG(msg,
828 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
829
830 nla_nest_end(msg, nl_rate);
831 }
832
833 nla_nest_end(msg, nl_rates);
834
835 nla_nest_end(msg, nl_band);
836 }
837 nla_nest_end(msg, nl_bands);
838
839 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
840 if (!nl_cmds)
841 goto nla_put_failure;
842
843 i = 0;
844 #define CMD(op, n) \
845 do { \
846 if (dev->ops->op) { \
847 i++; \
848 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
849 } \
850 } while (0)
851
852 CMD(add_virtual_intf, NEW_INTERFACE);
853 CMD(change_virtual_intf, SET_INTERFACE);
854 CMD(add_key, NEW_KEY);
855 CMD(add_beacon, NEW_BEACON);
856 CMD(add_station, NEW_STATION);
857 CMD(add_mpath, NEW_MPATH);
858 CMD(update_mesh_config, SET_MESH_CONFIG);
859 CMD(change_bss, SET_BSS);
860 CMD(auth, AUTHENTICATE);
861 CMD(assoc, ASSOCIATE);
862 CMD(deauth, DEAUTHENTICATE);
863 CMD(disassoc, DISASSOCIATE);
864 CMD(join_ibss, JOIN_IBSS);
865 CMD(join_mesh, JOIN_MESH);
866 CMD(set_pmksa, SET_PMKSA);
867 CMD(del_pmksa, DEL_PMKSA);
868 CMD(flush_pmksa, FLUSH_PMKSA);
869 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
870 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
871 CMD(mgmt_tx, FRAME);
872 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
873 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
874 i++;
875 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
876 }
877 CMD(set_channel, SET_CHANNEL);
878 CMD(set_wds_peer, SET_WDS_PEER);
879 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
880 CMD(sched_scan_start, START_SCHED_SCAN);
881
882 #undef CMD
883
884 if (dev->ops->connect || dev->ops->auth) {
885 i++;
886 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
887 }
888
889 if (dev->ops->disconnect || dev->ops->deauth) {
890 i++;
891 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
892 }
893
894 nla_nest_end(msg, nl_cmds);
895
896 if (dev->ops->remain_on_channel)
897 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
898 dev->wiphy.max_remain_on_channel_duration);
899
900 if (dev->ops->mgmt_tx_cancel_wait)
901 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
902
903 if (mgmt_stypes) {
904 u16 stypes;
905 struct nlattr *nl_ftypes, *nl_ifs;
906 enum nl80211_iftype ift;
907
908 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
909 if (!nl_ifs)
910 goto nla_put_failure;
911
912 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
913 nl_ftypes = nla_nest_start(msg, ift);
914 if (!nl_ftypes)
915 goto nla_put_failure;
916 i = 0;
917 stypes = mgmt_stypes[ift].tx;
918 while (stypes) {
919 if (stypes & 1)
920 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
921 (i << 4) | IEEE80211_FTYPE_MGMT);
922 stypes >>= 1;
923 i++;
924 }
925 nla_nest_end(msg, nl_ftypes);
926 }
927
928 nla_nest_end(msg, nl_ifs);
929
930 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
931 if (!nl_ifs)
932 goto nla_put_failure;
933
934 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
935 nl_ftypes = nla_nest_start(msg, ift);
936 if (!nl_ftypes)
937 goto nla_put_failure;
938 i = 0;
939 stypes = mgmt_stypes[ift].rx;
940 while (stypes) {
941 if (stypes & 1)
942 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
943 (i << 4) | IEEE80211_FTYPE_MGMT);
944 stypes >>= 1;
945 i++;
946 }
947 nla_nest_end(msg, nl_ftypes);
948 }
949 nla_nest_end(msg, nl_ifs);
950 }
951
952 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
953 struct nlattr *nl_wowlan;
954
955 nl_wowlan = nla_nest_start(msg,
956 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
957 if (!nl_wowlan)
958 goto nla_put_failure;
959
960 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
961 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
962 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
963 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
964 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
965 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
966 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
967 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
968 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
969 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
970 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
971 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
972 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
973 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
974 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
975 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
976 if (dev->wiphy.wowlan.n_patterns) {
977 struct nl80211_wowlan_pattern_support pat = {
978 .max_patterns = dev->wiphy.wowlan.n_patterns,
979 .min_pattern_len =
980 dev->wiphy.wowlan.pattern_min_len,
981 .max_pattern_len =
982 dev->wiphy.wowlan.pattern_max_len,
983 };
984 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
985 sizeof(pat), &pat);
986 }
987
988 nla_nest_end(msg, nl_wowlan);
989 }
990
991 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
992 dev->wiphy.software_iftypes))
993 goto nla_put_failure;
994
995 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
996 goto nla_put_failure;
997
998 return genlmsg_end(msg, hdr);
999
1000 nla_put_failure:
1001 genlmsg_cancel(msg, hdr);
1002 return -EMSGSIZE;
1003 }
1004
1005 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1006 {
1007 int idx = 0;
1008 int start = cb->args[0];
1009 struct cfg80211_registered_device *dev;
1010
1011 mutex_lock(&cfg80211_mutex);
1012 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1013 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1014 continue;
1015 if (++idx <= start)
1016 continue;
1017 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1018 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1019 dev) < 0) {
1020 idx--;
1021 break;
1022 }
1023 }
1024 mutex_unlock(&cfg80211_mutex);
1025
1026 cb->args[0] = idx;
1027
1028 return skb->len;
1029 }
1030
1031 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1032 {
1033 struct sk_buff *msg;
1034 struct cfg80211_registered_device *dev = info->user_ptr[0];
1035
1036 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1037 if (!msg)
1038 return -ENOMEM;
1039
1040 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1041 nlmsg_free(msg);
1042 return -ENOBUFS;
1043 }
1044
1045 return genlmsg_reply(msg, info);
1046 }
1047
1048 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1049 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1050 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1051 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1052 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1053 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1054 };
1055
1056 static int parse_txq_params(struct nlattr *tb[],
1057 struct ieee80211_txq_params *txq_params)
1058 {
1059 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1060 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1061 !tb[NL80211_TXQ_ATTR_AIFS])
1062 return -EINVAL;
1063
1064 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1065 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1066 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1067 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1068 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1069
1070 return 0;
1071 }
1072
1073 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1074 {
1075 /*
1076 * You can only set the channel explicitly for AP, mesh
1077 * and WDS type interfaces; all others have their channel
1078 * managed via their respective "establish a connection"
1079 * command (connect, join, ...)
1080 *
1081 * Monitors are special as they are normally slaved to
1082 * whatever else is going on, so they behave as though
1083 * you tried setting the wiphy channel itself.
1084 */
1085 return !wdev ||
1086 wdev->iftype == NL80211_IFTYPE_AP ||
1087 wdev->iftype == NL80211_IFTYPE_WDS ||
1088 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1089 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1090 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1091 }
1092
1093 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1094 struct wireless_dev *wdev,
1095 struct genl_info *info)
1096 {
1097 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1098 u32 freq;
1099 int result;
1100
1101 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1102 return -EINVAL;
1103
1104 if (!nl80211_can_set_dev_channel(wdev))
1105 return -EOPNOTSUPP;
1106
1107 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1108 channel_type = nla_get_u32(info->attrs[
1109 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1110 if (channel_type != NL80211_CHAN_NO_HT &&
1111 channel_type != NL80211_CHAN_HT20 &&
1112 channel_type != NL80211_CHAN_HT40PLUS &&
1113 channel_type != NL80211_CHAN_HT40MINUS)
1114 return -EINVAL;
1115 }
1116
1117 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1118
1119 mutex_lock(&rdev->devlist_mtx);
1120 if (wdev) {
1121 wdev_lock(wdev);
1122 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1123 wdev_unlock(wdev);
1124 } else {
1125 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1126 }
1127 mutex_unlock(&rdev->devlist_mtx);
1128
1129 return result;
1130 }
1131
1132 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1133 {
1134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1135 struct net_device *netdev = info->user_ptr[1];
1136
1137 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1138 }
1139
1140 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1141 {
1142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1143 struct net_device *dev = info->user_ptr[1];
1144 struct wireless_dev *wdev = dev->ieee80211_ptr;
1145 const u8 *bssid;
1146
1147 if (!info->attrs[NL80211_ATTR_MAC])
1148 return -EINVAL;
1149
1150 if (netif_running(dev))
1151 return -EBUSY;
1152
1153 if (!rdev->ops->set_wds_peer)
1154 return -EOPNOTSUPP;
1155
1156 if (wdev->iftype != NL80211_IFTYPE_WDS)
1157 return -EOPNOTSUPP;
1158
1159 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1160 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1161 }
1162
1163
1164 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1165 {
1166 struct cfg80211_registered_device *rdev;
1167 struct net_device *netdev = NULL;
1168 struct wireless_dev *wdev;
1169 int result = 0, rem_txq_params = 0;
1170 struct nlattr *nl_txq_params;
1171 u32 changed;
1172 u8 retry_short = 0, retry_long = 0;
1173 u32 frag_threshold = 0, rts_threshold = 0;
1174 u8 coverage_class = 0;
1175
1176 /*
1177 * Try to find the wiphy and netdev. Normally this
1178 * function shouldn't need the netdev, but this is
1179 * done for backward compatibility -- previously
1180 * setting the channel was done per wiphy, but now
1181 * it is per netdev. Previous userland like hostapd
1182 * also passed a netdev to set_wiphy, so that it is
1183 * possible to let that go to the right netdev!
1184 */
1185 mutex_lock(&cfg80211_mutex);
1186
1187 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1188 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1189
1190 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1191 if (netdev && netdev->ieee80211_ptr) {
1192 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1193 mutex_lock(&rdev->mtx);
1194 } else
1195 netdev = NULL;
1196 }
1197
1198 if (!netdev) {
1199 rdev = __cfg80211_rdev_from_info(info);
1200 if (IS_ERR(rdev)) {
1201 mutex_unlock(&cfg80211_mutex);
1202 return PTR_ERR(rdev);
1203 }
1204 wdev = NULL;
1205 netdev = NULL;
1206 result = 0;
1207
1208 mutex_lock(&rdev->mtx);
1209 } else if (netif_running(netdev) &&
1210 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1211 wdev = netdev->ieee80211_ptr;
1212 else
1213 wdev = NULL;
1214
1215 /*
1216 * end workaround code, by now the rdev is available
1217 * and locked, and wdev may or may not be NULL.
1218 */
1219
1220 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1221 result = cfg80211_dev_rename(
1222 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1223
1224 mutex_unlock(&cfg80211_mutex);
1225
1226 if (result)
1227 goto bad_res;
1228
1229 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1230 struct ieee80211_txq_params txq_params;
1231 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1232
1233 if (!rdev->ops->set_txq_params) {
1234 result = -EOPNOTSUPP;
1235 goto bad_res;
1236 }
1237
1238 nla_for_each_nested(nl_txq_params,
1239 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1240 rem_txq_params) {
1241 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1242 nla_data(nl_txq_params),
1243 nla_len(nl_txq_params),
1244 txq_params_policy);
1245 result = parse_txq_params(tb, &txq_params);
1246 if (result)
1247 goto bad_res;
1248
1249 result = rdev->ops->set_txq_params(&rdev->wiphy,
1250 &txq_params);
1251 if (result)
1252 goto bad_res;
1253 }
1254 }
1255
1256 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1257 result = __nl80211_set_channel(rdev, wdev, info);
1258 if (result)
1259 goto bad_res;
1260 }
1261
1262 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1263 enum nl80211_tx_power_setting type;
1264 int idx, mbm = 0;
1265
1266 if (!rdev->ops->set_tx_power) {
1267 result = -EOPNOTSUPP;
1268 goto bad_res;
1269 }
1270
1271 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1272 type = nla_get_u32(info->attrs[idx]);
1273
1274 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1275 (type != NL80211_TX_POWER_AUTOMATIC)) {
1276 result = -EINVAL;
1277 goto bad_res;
1278 }
1279
1280 if (type != NL80211_TX_POWER_AUTOMATIC) {
1281 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1282 mbm = nla_get_u32(info->attrs[idx]);
1283 }
1284
1285 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1286 if (result)
1287 goto bad_res;
1288 }
1289
1290 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1291 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1292 u32 tx_ant, rx_ant;
1293 if ((!rdev->wiphy.available_antennas_tx &&
1294 !rdev->wiphy.available_antennas_rx) ||
1295 !rdev->ops->set_antenna) {
1296 result = -EOPNOTSUPP;
1297 goto bad_res;
1298 }
1299
1300 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1301 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1302
1303 /* reject antenna configurations which don't match the
1304 * available antenna masks, except for the "all" mask */
1305 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1306 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1307 result = -EINVAL;
1308 goto bad_res;
1309 }
1310
1311 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1312 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1313
1314 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1315 if (result)
1316 goto bad_res;
1317 }
1318
1319 changed = 0;
1320
1321 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1322 retry_short = nla_get_u8(
1323 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1324 if (retry_short == 0) {
1325 result = -EINVAL;
1326 goto bad_res;
1327 }
1328 changed |= WIPHY_PARAM_RETRY_SHORT;
1329 }
1330
1331 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1332 retry_long = nla_get_u8(
1333 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1334 if (retry_long == 0) {
1335 result = -EINVAL;
1336 goto bad_res;
1337 }
1338 changed |= WIPHY_PARAM_RETRY_LONG;
1339 }
1340
1341 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1342 frag_threshold = nla_get_u32(
1343 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1344 if (frag_threshold < 256) {
1345 result = -EINVAL;
1346 goto bad_res;
1347 }
1348 if (frag_threshold != (u32) -1) {
1349 /*
1350 * Fragments (apart from the last one) are required to
1351 * have even length. Make the fragmentation code
1352 * simpler by stripping LSB should someone try to use
1353 * odd threshold value.
1354 */
1355 frag_threshold &= ~0x1;
1356 }
1357 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1358 }
1359
1360 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1361 rts_threshold = nla_get_u32(
1362 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1363 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1364 }
1365
1366 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1367 coverage_class = nla_get_u8(
1368 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1369 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1370 }
1371
1372 if (changed) {
1373 u8 old_retry_short, old_retry_long;
1374 u32 old_frag_threshold, old_rts_threshold;
1375 u8 old_coverage_class;
1376
1377 if (!rdev->ops->set_wiphy_params) {
1378 result = -EOPNOTSUPP;
1379 goto bad_res;
1380 }
1381
1382 old_retry_short = rdev->wiphy.retry_short;
1383 old_retry_long = rdev->wiphy.retry_long;
1384 old_frag_threshold = rdev->wiphy.frag_threshold;
1385 old_rts_threshold = rdev->wiphy.rts_threshold;
1386 old_coverage_class = rdev->wiphy.coverage_class;
1387
1388 if (changed & WIPHY_PARAM_RETRY_SHORT)
1389 rdev->wiphy.retry_short = retry_short;
1390 if (changed & WIPHY_PARAM_RETRY_LONG)
1391 rdev->wiphy.retry_long = retry_long;
1392 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1393 rdev->wiphy.frag_threshold = frag_threshold;
1394 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1395 rdev->wiphy.rts_threshold = rts_threshold;
1396 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1397 rdev->wiphy.coverage_class = coverage_class;
1398
1399 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1400 if (result) {
1401 rdev->wiphy.retry_short = old_retry_short;
1402 rdev->wiphy.retry_long = old_retry_long;
1403 rdev->wiphy.frag_threshold = old_frag_threshold;
1404 rdev->wiphy.rts_threshold = old_rts_threshold;
1405 rdev->wiphy.coverage_class = old_coverage_class;
1406 }
1407 }
1408
1409 bad_res:
1410 mutex_unlock(&rdev->mtx);
1411 if (netdev)
1412 dev_put(netdev);
1413 return result;
1414 }
1415
1416
1417 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1418 struct cfg80211_registered_device *rdev,
1419 struct net_device *dev)
1420 {
1421 void *hdr;
1422
1423 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1424 if (!hdr)
1425 return -1;
1426
1427 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1428 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1429 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1430 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1431
1432 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1433 rdev->devlist_generation ^
1434 (cfg80211_rdev_list_generation << 2));
1435
1436 return genlmsg_end(msg, hdr);
1437
1438 nla_put_failure:
1439 genlmsg_cancel(msg, hdr);
1440 return -EMSGSIZE;
1441 }
1442
1443 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1444 {
1445 int wp_idx = 0;
1446 int if_idx = 0;
1447 int wp_start = cb->args[0];
1448 int if_start = cb->args[1];
1449 struct cfg80211_registered_device *rdev;
1450 struct wireless_dev *wdev;
1451
1452 mutex_lock(&cfg80211_mutex);
1453 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1454 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1455 continue;
1456 if (wp_idx < wp_start) {
1457 wp_idx++;
1458 continue;
1459 }
1460 if_idx = 0;
1461
1462 mutex_lock(&rdev->devlist_mtx);
1463 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1464 if (if_idx < if_start) {
1465 if_idx++;
1466 continue;
1467 }
1468 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1469 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1470 rdev, wdev->netdev) < 0) {
1471 mutex_unlock(&rdev->devlist_mtx);
1472 goto out;
1473 }
1474 if_idx++;
1475 }
1476 mutex_unlock(&rdev->devlist_mtx);
1477
1478 wp_idx++;
1479 }
1480 out:
1481 mutex_unlock(&cfg80211_mutex);
1482
1483 cb->args[0] = wp_idx;
1484 cb->args[1] = if_idx;
1485
1486 return skb->len;
1487 }
1488
1489 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1490 {
1491 struct sk_buff *msg;
1492 struct cfg80211_registered_device *dev = info->user_ptr[0];
1493 struct net_device *netdev = info->user_ptr[1];
1494
1495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1496 if (!msg)
1497 return -ENOMEM;
1498
1499 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1500 dev, netdev) < 0) {
1501 nlmsg_free(msg);
1502 return -ENOBUFS;
1503 }
1504
1505 return genlmsg_reply(msg, info);
1506 }
1507
1508 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1509 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1510 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1511 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1512 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1513 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1514 };
1515
1516 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1517 {
1518 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1519 int flag;
1520
1521 *mntrflags = 0;
1522
1523 if (!nla)
1524 return -EINVAL;
1525
1526 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1527 nla, mntr_flags_policy))
1528 return -EINVAL;
1529
1530 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1531 if (flags[flag])
1532 *mntrflags |= (1<<flag);
1533
1534 return 0;
1535 }
1536
1537 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1538 struct net_device *netdev, u8 use_4addr,
1539 enum nl80211_iftype iftype)
1540 {
1541 if (!use_4addr) {
1542 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1543 return -EBUSY;
1544 return 0;
1545 }
1546
1547 switch (iftype) {
1548 case NL80211_IFTYPE_AP_VLAN:
1549 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1550 return 0;
1551 break;
1552 case NL80211_IFTYPE_STATION:
1553 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1554 return 0;
1555 break;
1556 default:
1557 break;
1558 }
1559
1560 return -EOPNOTSUPP;
1561 }
1562
1563 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1564 {
1565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1566 struct vif_params params;
1567 int err;
1568 enum nl80211_iftype otype, ntype;
1569 struct net_device *dev = info->user_ptr[1];
1570 u32 _flags, *flags = NULL;
1571 bool change = false;
1572
1573 memset(&params, 0, sizeof(params));
1574
1575 otype = ntype = dev->ieee80211_ptr->iftype;
1576
1577 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1578 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1579 if (otype != ntype)
1580 change = true;
1581 if (ntype > NL80211_IFTYPE_MAX)
1582 return -EINVAL;
1583 }
1584
1585 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1586 struct wireless_dev *wdev = dev->ieee80211_ptr;
1587
1588 if (ntype != NL80211_IFTYPE_MESH_POINT)
1589 return -EINVAL;
1590 if (netif_running(dev))
1591 return -EBUSY;
1592
1593 wdev_lock(wdev);
1594 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1595 IEEE80211_MAX_MESH_ID_LEN);
1596 wdev->mesh_id_up_len =
1597 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1598 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1599 wdev->mesh_id_up_len);
1600 wdev_unlock(wdev);
1601 }
1602
1603 if (info->attrs[NL80211_ATTR_4ADDR]) {
1604 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1605 change = true;
1606 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1607 if (err)
1608 return err;
1609 } else {
1610 params.use_4addr = -1;
1611 }
1612
1613 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1614 if (ntype != NL80211_IFTYPE_MONITOR)
1615 return -EINVAL;
1616 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1617 &_flags);
1618 if (err)
1619 return err;
1620
1621 flags = &_flags;
1622 change = true;
1623 }
1624
1625 if (change)
1626 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1627 else
1628 err = 0;
1629
1630 if (!err && params.use_4addr != -1)
1631 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1632
1633 return err;
1634 }
1635
1636 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1637 {
1638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1639 struct vif_params params;
1640 struct net_device *dev;
1641 int err;
1642 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1643 u32 flags;
1644
1645 memset(&params, 0, sizeof(params));
1646
1647 if (!info->attrs[NL80211_ATTR_IFNAME])
1648 return -EINVAL;
1649
1650 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1651 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1652 if (type > NL80211_IFTYPE_MAX)
1653 return -EINVAL;
1654 }
1655
1656 if (!rdev->ops->add_virtual_intf ||
1657 !(rdev->wiphy.interface_modes & (1 << type)))
1658 return -EOPNOTSUPP;
1659
1660 if (info->attrs[NL80211_ATTR_4ADDR]) {
1661 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1662 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1663 if (err)
1664 return err;
1665 }
1666
1667 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1668 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1669 &flags);
1670 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1671 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1672 type, err ? NULL : &flags, &params);
1673 if (IS_ERR(dev))
1674 return PTR_ERR(dev);
1675
1676 if (type == NL80211_IFTYPE_MESH_POINT &&
1677 info->attrs[NL80211_ATTR_MESH_ID]) {
1678 struct wireless_dev *wdev = dev->ieee80211_ptr;
1679
1680 wdev_lock(wdev);
1681 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1682 IEEE80211_MAX_MESH_ID_LEN);
1683 wdev->mesh_id_up_len =
1684 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1685 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1686 wdev->mesh_id_up_len);
1687 wdev_unlock(wdev);
1688 }
1689
1690 return 0;
1691 }
1692
1693 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1694 {
1695 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1696 struct net_device *dev = info->user_ptr[1];
1697
1698 if (!rdev->ops->del_virtual_intf)
1699 return -EOPNOTSUPP;
1700
1701 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1702 }
1703
1704 struct get_key_cookie {
1705 struct sk_buff *msg;
1706 int error;
1707 int idx;
1708 };
1709
1710 static void get_key_callback(void *c, struct key_params *params)
1711 {
1712 struct nlattr *key;
1713 struct get_key_cookie *cookie = c;
1714
1715 if (params->key)
1716 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1717 params->key_len, params->key);
1718
1719 if (params->seq)
1720 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1721 params->seq_len, params->seq);
1722
1723 if (params->cipher)
1724 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1725 params->cipher);
1726
1727 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1728 if (!key)
1729 goto nla_put_failure;
1730
1731 if (params->key)
1732 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1733 params->key_len, params->key);
1734
1735 if (params->seq)
1736 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1737 params->seq_len, params->seq);
1738
1739 if (params->cipher)
1740 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1741 params->cipher);
1742
1743 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1744
1745 nla_nest_end(cookie->msg, key);
1746
1747 return;
1748 nla_put_failure:
1749 cookie->error = 1;
1750 }
1751
1752 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1753 {
1754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1755 int err;
1756 struct net_device *dev = info->user_ptr[1];
1757 u8 key_idx = 0;
1758 const u8 *mac_addr = NULL;
1759 bool pairwise;
1760 struct get_key_cookie cookie = {
1761 .error = 0,
1762 };
1763 void *hdr;
1764 struct sk_buff *msg;
1765
1766 if (info->attrs[NL80211_ATTR_KEY_IDX])
1767 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1768
1769 if (key_idx > 5)
1770 return -EINVAL;
1771
1772 if (info->attrs[NL80211_ATTR_MAC])
1773 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1774
1775 pairwise = !!mac_addr;
1776 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1777 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1778 if (kt >= NUM_NL80211_KEYTYPES)
1779 return -EINVAL;
1780 if (kt != NL80211_KEYTYPE_GROUP &&
1781 kt != NL80211_KEYTYPE_PAIRWISE)
1782 return -EINVAL;
1783 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1784 }
1785
1786 if (!rdev->ops->get_key)
1787 return -EOPNOTSUPP;
1788
1789 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1790 if (!msg)
1791 return -ENOMEM;
1792
1793 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1794 NL80211_CMD_NEW_KEY);
1795 if (IS_ERR(hdr))
1796 return PTR_ERR(hdr);
1797
1798 cookie.msg = msg;
1799 cookie.idx = key_idx;
1800
1801 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1802 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1803 if (mac_addr)
1804 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1805
1806 if (pairwise && mac_addr &&
1807 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1808 return -ENOENT;
1809
1810 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1811 mac_addr, &cookie, get_key_callback);
1812
1813 if (err)
1814 goto free_msg;
1815
1816 if (cookie.error)
1817 goto nla_put_failure;
1818
1819 genlmsg_end(msg, hdr);
1820 return genlmsg_reply(msg, info);
1821
1822 nla_put_failure:
1823 err = -ENOBUFS;
1824 free_msg:
1825 nlmsg_free(msg);
1826 return err;
1827 }
1828
1829 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1830 {
1831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1832 struct key_parse key;
1833 int err;
1834 struct net_device *dev = info->user_ptr[1];
1835
1836 err = nl80211_parse_key(info, &key);
1837 if (err)
1838 return err;
1839
1840 if (key.idx < 0)
1841 return -EINVAL;
1842
1843 /* only support setting default key */
1844 if (!key.def && !key.defmgmt)
1845 return -EINVAL;
1846
1847 wdev_lock(dev->ieee80211_ptr);
1848
1849 if (key.def) {
1850 if (!rdev->ops->set_default_key) {
1851 err = -EOPNOTSUPP;
1852 goto out;
1853 }
1854
1855 err = nl80211_key_allowed(dev->ieee80211_ptr);
1856 if (err)
1857 goto out;
1858
1859 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1860 key.def_uni, key.def_multi);
1861
1862 if (err)
1863 goto out;
1864
1865 #ifdef CONFIG_CFG80211_WEXT
1866 dev->ieee80211_ptr->wext.default_key = key.idx;
1867 #endif
1868 } else {
1869 if (key.def_uni || !key.def_multi) {
1870 err = -EINVAL;
1871 goto out;
1872 }
1873
1874 if (!rdev->ops->set_default_mgmt_key) {
1875 err = -EOPNOTSUPP;
1876 goto out;
1877 }
1878
1879 err = nl80211_key_allowed(dev->ieee80211_ptr);
1880 if (err)
1881 goto out;
1882
1883 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1884 dev, key.idx);
1885 if (err)
1886 goto out;
1887
1888 #ifdef CONFIG_CFG80211_WEXT
1889 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1890 #endif
1891 }
1892
1893 out:
1894 wdev_unlock(dev->ieee80211_ptr);
1895
1896 return err;
1897 }
1898
1899 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1900 {
1901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1902 int err;
1903 struct net_device *dev = info->user_ptr[1];
1904 struct key_parse key;
1905 const u8 *mac_addr = NULL;
1906
1907 err = nl80211_parse_key(info, &key);
1908 if (err)
1909 return err;
1910
1911 if (!key.p.key)
1912 return -EINVAL;
1913
1914 if (info->attrs[NL80211_ATTR_MAC])
1915 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1916
1917 if (key.type == -1) {
1918 if (mac_addr)
1919 key.type = NL80211_KEYTYPE_PAIRWISE;
1920 else
1921 key.type = NL80211_KEYTYPE_GROUP;
1922 }
1923
1924 /* for now */
1925 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1926 key.type != NL80211_KEYTYPE_GROUP)
1927 return -EINVAL;
1928
1929 if (!rdev->ops->add_key)
1930 return -EOPNOTSUPP;
1931
1932 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
1933 key.type == NL80211_KEYTYPE_PAIRWISE,
1934 mac_addr))
1935 return -EINVAL;
1936
1937 wdev_lock(dev->ieee80211_ptr);
1938 err = nl80211_key_allowed(dev->ieee80211_ptr);
1939 if (!err)
1940 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
1941 key.type == NL80211_KEYTYPE_PAIRWISE,
1942 mac_addr, &key.p);
1943 wdev_unlock(dev->ieee80211_ptr);
1944
1945 return err;
1946 }
1947
1948 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
1949 {
1950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1951 int err;
1952 struct net_device *dev = info->user_ptr[1];
1953 u8 *mac_addr = NULL;
1954 struct key_parse key;
1955
1956 err = nl80211_parse_key(info, &key);
1957 if (err)
1958 return err;
1959
1960 if (info->attrs[NL80211_ATTR_MAC])
1961 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1962
1963 if (key.type == -1) {
1964 if (mac_addr)
1965 key.type = NL80211_KEYTYPE_PAIRWISE;
1966 else
1967 key.type = NL80211_KEYTYPE_GROUP;
1968 }
1969
1970 /* for now */
1971 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
1972 key.type != NL80211_KEYTYPE_GROUP)
1973 return -EINVAL;
1974
1975 if (!rdev->ops->del_key)
1976 return -EOPNOTSUPP;
1977
1978 wdev_lock(dev->ieee80211_ptr);
1979 err = nl80211_key_allowed(dev->ieee80211_ptr);
1980
1981 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
1982 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1983 err = -ENOENT;
1984
1985 if (!err)
1986 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
1987 key.type == NL80211_KEYTYPE_PAIRWISE,
1988 mac_addr);
1989
1990 #ifdef CONFIG_CFG80211_WEXT
1991 if (!err) {
1992 if (key.idx == dev->ieee80211_ptr->wext.default_key)
1993 dev->ieee80211_ptr->wext.default_key = -1;
1994 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
1995 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
1996 }
1997 #endif
1998 wdev_unlock(dev->ieee80211_ptr);
1999
2000 return err;
2001 }
2002
2003 static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2004 {
2005 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2006 struct beacon_parameters *info);
2007 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2008 struct net_device *dev = info->user_ptr[1];
2009 struct wireless_dev *wdev = dev->ieee80211_ptr;
2010 struct beacon_parameters params;
2011 int haveinfo = 0, err;
2012
2013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2014 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2015 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2016 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2017 return -EINVAL;
2018
2019 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2020 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2021 return -EOPNOTSUPP;
2022
2023 memset(&params, 0, sizeof(params));
2024
2025 switch (info->genlhdr->cmd) {
2026 case NL80211_CMD_NEW_BEACON:
2027 /* these are required for NEW_BEACON */
2028 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2029 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2030 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2031 return -EINVAL;
2032
2033 params.interval =
2034 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2035 params.dtim_period =
2036 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2037
2038 err = cfg80211_validate_beacon_int(rdev, params.interval);
2039 if (err)
2040 return err;
2041
2042 /*
2043 * In theory, some of these attributes could be required for
2044 * NEW_BEACON, but since they were not used when the command was
2045 * originally added, keep them optional for old user space
2046 * programs to work with drivers that do not need the additional
2047 * information.
2048 */
2049 if (info->attrs[NL80211_ATTR_SSID]) {
2050 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2051 params.ssid_len =
2052 nla_len(info->attrs[NL80211_ATTR_SSID]);
2053 if (params.ssid_len == 0 ||
2054 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2055 return -EINVAL;
2056 }
2057
2058 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2059 params.hidden_ssid = nla_get_u32(
2060 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2061 if (params.hidden_ssid !=
2062 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2063 params.hidden_ssid !=
2064 NL80211_HIDDEN_SSID_ZERO_LEN &&
2065 params.hidden_ssid !=
2066 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2067 return -EINVAL;
2068 }
2069
2070 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2071
2072 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2073 params.auth_type = nla_get_u32(
2074 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2075 if (!nl80211_valid_auth_type(params.auth_type))
2076 return -EINVAL;
2077 } else
2078 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2079
2080 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2081 NL80211_MAX_NR_CIPHER_SUITES);
2082 if (err)
2083 return err;
2084
2085 call = rdev->ops->add_beacon;
2086 break;
2087 case NL80211_CMD_SET_BEACON:
2088 call = rdev->ops->set_beacon;
2089 break;
2090 default:
2091 WARN_ON(1);
2092 return -EOPNOTSUPP;
2093 }
2094
2095 if (!call)
2096 return -EOPNOTSUPP;
2097
2098 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2099 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2100 params.head_len =
2101 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2102 haveinfo = 1;
2103 }
2104
2105 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2106 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2107 params.tail_len =
2108 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2109 haveinfo = 1;
2110 }
2111
2112 if (!haveinfo)
2113 return -EINVAL;
2114
2115 if (info->attrs[NL80211_ATTR_IE]) {
2116 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2117 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2118 }
2119
2120 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2121 params.proberesp_ies =
2122 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2123 params.proberesp_ies_len =
2124 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2125 }
2126
2127 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2128 params.assocresp_ies =
2129 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2130 params.assocresp_ies_len =
2131 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2132 }
2133
2134 err = call(&rdev->wiphy, dev, &params);
2135 if (!err && params.interval)
2136 wdev->beacon_interval = params.interval;
2137 return err;
2138 }
2139
2140 static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2141 {
2142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2143 struct net_device *dev = info->user_ptr[1];
2144 struct wireless_dev *wdev = dev->ieee80211_ptr;
2145 int err;
2146
2147 if (!rdev->ops->del_beacon)
2148 return -EOPNOTSUPP;
2149
2150 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2152 return -EOPNOTSUPP;
2153
2154 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2155 if (!err)
2156 wdev->beacon_interval = 0;
2157 return err;
2158 }
2159
2160 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2161 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2162 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2163 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2164 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2165 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2166 };
2167
2168 static int parse_station_flags(struct genl_info *info,
2169 struct station_parameters *params)
2170 {
2171 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2172 struct nlattr *nla;
2173 int flag;
2174
2175 /*
2176 * Try parsing the new attribute first so userspace
2177 * can specify both for older kernels.
2178 */
2179 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2180 if (nla) {
2181 struct nl80211_sta_flag_update *sta_flags;
2182
2183 sta_flags = nla_data(nla);
2184 params->sta_flags_mask = sta_flags->mask;
2185 params->sta_flags_set = sta_flags->set;
2186 if ((params->sta_flags_mask |
2187 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2188 return -EINVAL;
2189 return 0;
2190 }
2191
2192 /* if present, parse the old attribute */
2193
2194 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2195 if (!nla)
2196 return 0;
2197
2198 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2199 nla, sta_flags_policy))
2200 return -EINVAL;
2201
2202 params->sta_flags_mask = (1 << __NL80211_STA_FLAG_AFTER_LAST) - 1;
2203 params->sta_flags_mask &= ~1;
2204
2205 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2206 if (flags[flag])
2207 params->sta_flags_set |= (1<<flag);
2208
2209 return 0;
2210 }
2211
2212 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2213 int attr)
2214 {
2215 struct nlattr *rate;
2216 u16 bitrate;
2217
2218 rate = nla_nest_start(msg, attr);
2219 if (!rate)
2220 goto nla_put_failure;
2221
2222 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2223 bitrate = cfg80211_calculate_bitrate(info);
2224 if (bitrate > 0)
2225 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2226
2227 if (info->flags & RATE_INFO_FLAGS_MCS)
2228 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2229 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2230 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2231 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2232 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2233
2234 nla_nest_end(msg, rate);
2235 return true;
2236
2237 nla_put_failure:
2238 return false;
2239 }
2240
2241 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2242 int flags, struct net_device *dev,
2243 const u8 *mac_addr, struct station_info *sinfo)
2244 {
2245 void *hdr;
2246 struct nlattr *sinfoattr, *bss_param;
2247
2248 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2249 if (!hdr)
2250 return -1;
2251
2252 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2253 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2254
2255 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2256
2257 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2258 if (!sinfoattr)
2259 goto nla_put_failure;
2260 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2261 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2262 sinfo->connected_time);
2263 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2264 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2265 sinfo->inactive_time);
2266 if (sinfo->filled & STATION_INFO_RX_BYTES)
2267 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2268 sinfo->rx_bytes);
2269 if (sinfo->filled & STATION_INFO_TX_BYTES)
2270 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2271 sinfo->tx_bytes);
2272 if (sinfo->filled & STATION_INFO_LLID)
2273 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2274 sinfo->llid);
2275 if (sinfo->filled & STATION_INFO_PLID)
2276 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2277 sinfo->plid);
2278 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2279 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2280 sinfo->plink_state);
2281 if (sinfo->filled & STATION_INFO_SIGNAL)
2282 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2283 sinfo->signal);
2284 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2285 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2286 sinfo->signal_avg);
2287 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2288 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2289 NL80211_STA_INFO_TX_BITRATE))
2290 goto nla_put_failure;
2291 }
2292 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2293 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2294 NL80211_STA_INFO_RX_BITRATE))
2295 goto nla_put_failure;
2296 }
2297 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2298 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2299 sinfo->rx_packets);
2300 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2301 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2302 sinfo->tx_packets);
2303 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2304 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2305 sinfo->tx_retries);
2306 if (sinfo->filled & STATION_INFO_TX_FAILED)
2307 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2308 sinfo->tx_failed);
2309 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2310 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2311 if (!bss_param)
2312 goto nla_put_failure;
2313
2314 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2315 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2316 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2317 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2318 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2319 NLA_PUT_FLAG(msg,
2320 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2321 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2322 sinfo->bss_param.dtim_period);
2323 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2324 sinfo->bss_param.beacon_interval);
2325
2326 nla_nest_end(msg, bss_param);
2327 }
2328 nla_nest_end(msg, sinfoattr);
2329
2330 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2331 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2332 sinfo->assoc_req_ies);
2333
2334 return genlmsg_end(msg, hdr);
2335
2336 nla_put_failure:
2337 genlmsg_cancel(msg, hdr);
2338 return -EMSGSIZE;
2339 }
2340
2341 static int nl80211_dump_station(struct sk_buff *skb,
2342 struct netlink_callback *cb)
2343 {
2344 struct station_info sinfo;
2345 struct cfg80211_registered_device *dev;
2346 struct net_device *netdev;
2347 u8 mac_addr[ETH_ALEN];
2348 int sta_idx = cb->args[1];
2349 int err;
2350
2351 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2352 if (err)
2353 return err;
2354
2355 if (!dev->ops->dump_station) {
2356 err = -EOPNOTSUPP;
2357 goto out_err;
2358 }
2359
2360 while (1) {
2361 memset(&sinfo, 0, sizeof(sinfo));
2362 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2363 mac_addr, &sinfo);
2364 if (err == -ENOENT)
2365 break;
2366 if (err)
2367 goto out_err;
2368
2369 if (nl80211_send_station(skb,
2370 NETLINK_CB(cb->skb).pid,
2371 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2372 netdev, mac_addr,
2373 &sinfo) < 0)
2374 goto out;
2375
2376 sta_idx++;
2377 }
2378
2379
2380 out:
2381 cb->args[1] = sta_idx;
2382 err = skb->len;
2383 out_err:
2384 nl80211_finish_netdev_dump(dev);
2385
2386 return err;
2387 }
2388
2389 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2390 {
2391 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2392 struct net_device *dev = info->user_ptr[1];
2393 struct station_info sinfo;
2394 struct sk_buff *msg;
2395 u8 *mac_addr = NULL;
2396 int err;
2397
2398 memset(&sinfo, 0, sizeof(sinfo));
2399
2400 if (!info->attrs[NL80211_ATTR_MAC])
2401 return -EINVAL;
2402
2403 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2404
2405 if (!rdev->ops->get_station)
2406 return -EOPNOTSUPP;
2407
2408 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2409 if (err)
2410 return err;
2411
2412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2413 if (!msg)
2414 return -ENOMEM;
2415
2416 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2417 dev, mac_addr, &sinfo) < 0) {
2418 nlmsg_free(msg);
2419 return -ENOBUFS;
2420 }
2421
2422 return genlmsg_reply(msg, info);
2423 }
2424
2425 /*
2426 * Get vlan interface making sure it is running and on the right wiphy.
2427 */
2428 static int get_vlan(struct genl_info *info,
2429 struct cfg80211_registered_device *rdev,
2430 struct net_device **vlan)
2431 {
2432 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2433 *vlan = NULL;
2434
2435 if (vlanattr) {
2436 *vlan = dev_get_by_index(genl_info_net(info),
2437 nla_get_u32(vlanattr));
2438 if (!*vlan)
2439 return -ENODEV;
2440 if (!(*vlan)->ieee80211_ptr)
2441 return -EINVAL;
2442 if ((*vlan)->ieee80211_ptr->wiphy != &rdev->wiphy)
2443 return -EINVAL;
2444 if (!netif_running(*vlan))
2445 return -ENETDOWN;
2446 }
2447 return 0;
2448 }
2449
2450 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2451 {
2452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2453 int err;
2454 struct net_device *dev = info->user_ptr[1];
2455 struct station_parameters params;
2456 u8 *mac_addr = NULL;
2457
2458 memset(&params, 0, sizeof(params));
2459
2460 params.listen_interval = -1;
2461 params.plink_state = -1;
2462
2463 if (info->attrs[NL80211_ATTR_STA_AID])
2464 return -EINVAL;
2465
2466 if (!info->attrs[NL80211_ATTR_MAC])
2467 return -EINVAL;
2468
2469 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2470
2471 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2472 params.supported_rates =
2473 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2474 params.supported_rates_len =
2475 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2476 }
2477
2478 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2479 params.listen_interval =
2480 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2481
2482 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2483 params.ht_capa =
2484 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2485
2486 if (parse_station_flags(info, &params))
2487 return -EINVAL;
2488
2489 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2490 params.plink_action =
2491 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2492
2493 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2494 params.plink_state =
2495 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2496
2497 err = get_vlan(info, rdev, &params.vlan);
2498 if (err)
2499 goto out;
2500
2501 /* validate settings */
2502 err = 0;
2503
2504 switch (dev->ieee80211_ptr->iftype) {
2505 case NL80211_IFTYPE_AP:
2506 case NL80211_IFTYPE_AP_VLAN:
2507 case NL80211_IFTYPE_P2P_GO:
2508 /* disallow mesh-specific things */
2509 if (params.plink_action)
2510 err = -EINVAL;
2511 break;
2512 case NL80211_IFTYPE_P2P_CLIENT:
2513 case NL80211_IFTYPE_STATION:
2514 /* disallow everything but AUTHORIZED flag */
2515 if (params.plink_action)
2516 err = -EINVAL;
2517 if (params.vlan)
2518 err = -EINVAL;
2519 if (params.supported_rates)
2520 err = -EINVAL;
2521 if (params.ht_capa)
2522 err = -EINVAL;
2523 if (params.listen_interval >= 0)
2524 err = -EINVAL;
2525 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2526 err = -EINVAL;
2527 break;
2528 case NL80211_IFTYPE_MESH_POINT:
2529 /* disallow things mesh doesn't support */
2530 if (params.vlan)
2531 err = -EINVAL;
2532 if (params.ht_capa)
2533 err = -EINVAL;
2534 if (params.listen_interval >= 0)
2535 err = -EINVAL;
2536 if (params.sta_flags_mask &
2537 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2538 BIT(NL80211_STA_FLAG_MFP) |
2539 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2540 err = -EINVAL;
2541 break;
2542 default:
2543 err = -EINVAL;
2544 }
2545
2546 if (err)
2547 goto out;
2548
2549 if (!rdev->ops->change_station) {
2550 err = -EOPNOTSUPP;
2551 goto out;
2552 }
2553
2554 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2555
2556 out:
2557 if (params.vlan)
2558 dev_put(params.vlan);
2559
2560 return err;
2561 }
2562
2563 static struct nla_policy
2564 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2565 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2566 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2567 };
2568
2569 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2570 {
2571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2572 int err;
2573 struct net_device *dev = info->user_ptr[1];
2574 struct station_parameters params;
2575 u8 *mac_addr = NULL;
2576
2577 memset(&params, 0, sizeof(params));
2578
2579 if (!info->attrs[NL80211_ATTR_MAC])
2580 return -EINVAL;
2581
2582 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2583 return -EINVAL;
2584
2585 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2586 return -EINVAL;
2587
2588 if (!info->attrs[NL80211_ATTR_STA_AID])
2589 return -EINVAL;
2590
2591 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2592 params.supported_rates =
2593 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2594 params.supported_rates_len =
2595 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2596 params.listen_interval =
2597 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2598
2599 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2600 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2601 return -EINVAL;
2602
2603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2604 params.ht_capa =
2605 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2606
2607 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2608 params.plink_action =
2609 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2610
2611 if (parse_station_flags(info, &params))
2612 return -EINVAL;
2613
2614 /* parse WME attributes if sta is WME capable */
2615 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2616 (params.sta_flags_set & NL80211_STA_FLAG_WME) &&
2617 info->attrs[NL80211_ATTR_STA_WME]) {
2618 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2619 struct nlattr *nla;
2620
2621 nla = info->attrs[NL80211_ATTR_STA_WME];
2622 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2623 nl80211_sta_wme_policy);
2624 if (err)
2625 return err;
2626
2627 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2628 params.uapsd_queues =
2629 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2630 if (params.uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2631 return -EINVAL;
2632
2633 if (tb[NL80211_STA_WME_MAX_SP])
2634 params.max_sp =
2635 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2636
2637 if (params.max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2638 return -EINVAL;
2639 }
2640
2641 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2642 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2643 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2644 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2645 return -EINVAL;
2646
2647 err = get_vlan(info, rdev, &params.vlan);
2648 if (err)
2649 goto out;
2650
2651 /* validate settings */
2652 err = 0;
2653
2654 if (!rdev->ops->add_station) {
2655 err = -EOPNOTSUPP;
2656 goto out;
2657 }
2658
2659 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2660
2661 out:
2662 if (params.vlan)
2663 dev_put(params.vlan);
2664 return err;
2665 }
2666
2667 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2668 {
2669 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2670 struct net_device *dev = info->user_ptr[1];
2671 u8 *mac_addr = NULL;
2672
2673 if (info->attrs[NL80211_ATTR_MAC])
2674 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2675
2676 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2677 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2678 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2679 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2680 return -EINVAL;
2681
2682 if (!rdev->ops->del_station)
2683 return -EOPNOTSUPP;
2684
2685 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2686 }
2687
2688 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2689 int flags, struct net_device *dev,
2690 u8 *dst, u8 *next_hop,
2691 struct mpath_info *pinfo)
2692 {
2693 void *hdr;
2694 struct nlattr *pinfoattr;
2695
2696 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2697 if (!hdr)
2698 return -1;
2699
2700 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2701 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2702 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2703
2704 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2705
2706 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2707 if (!pinfoattr)
2708 goto nla_put_failure;
2709 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2710 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2711 pinfo->frame_qlen);
2712 if (pinfo->filled & MPATH_INFO_SN)
2713 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2714 pinfo->sn);
2715 if (pinfo->filled & MPATH_INFO_METRIC)
2716 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2717 pinfo->metric);
2718 if (pinfo->filled & MPATH_INFO_EXPTIME)
2719 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2720 pinfo->exptime);
2721 if (pinfo->filled & MPATH_INFO_FLAGS)
2722 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2723 pinfo->flags);
2724 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2725 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2726 pinfo->discovery_timeout);
2727 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2728 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2729 pinfo->discovery_retries);
2730
2731 nla_nest_end(msg, pinfoattr);
2732
2733 return genlmsg_end(msg, hdr);
2734
2735 nla_put_failure:
2736 genlmsg_cancel(msg, hdr);
2737 return -EMSGSIZE;
2738 }
2739
2740 static int nl80211_dump_mpath(struct sk_buff *skb,
2741 struct netlink_callback *cb)
2742 {
2743 struct mpath_info pinfo;
2744 struct cfg80211_registered_device *dev;
2745 struct net_device *netdev;
2746 u8 dst[ETH_ALEN];
2747 u8 next_hop[ETH_ALEN];
2748 int path_idx = cb->args[1];
2749 int err;
2750
2751 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2752 if (err)
2753 return err;
2754
2755 if (!dev->ops->dump_mpath) {
2756 err = -EOPNOTSUPP;
2757 goto out_err;
2758 }
2759
2760 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2761 err = -EOPNOTSUPP;
2762 goto out_err;
2763 }
2764
2765 while (1) {
2766 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2767 dst, next_hop, &pinfo);
2768 if (err == -ENOENT)
2769 break;
2770 if (err)
2771 goto out_err;
2772
2773 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2774 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2775 netdev, dst, next_hop,
2776 &pinfo) < 0)
2777 goto out;
2778
2779 path_idx++;
2780 }
2781
2782
2783 out:
2784 cb->args[1] = path_idx;
2785 err = skb->len;
2786 out_err:
2787 nl80211_finish_netdev_dump(dev);
2788 return err;
2789 }
2790
2791 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2792 {
2793 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2794 int err;
2795 struct net_device *dev = info->user_ptr[1];
2796 struct mpath_info pinfo;
2797 struct sk_buff *msg;
2798 u8 *dst = NULL;
2799 u8 next_hop[ETH_ALEN];
2800
2801 memset(&pinfo, 0, sizeof(pinfo));
2802
2803 if (!info->attrs[NL80211_ATTR_MAC])
2804 return -EINVAL;
2805
2806 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2807
2808 if (!rdev->ops->get_mpath)
2809 return -EOPNOTSUPP;
2810
2811 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2812 return -EOPNOTSUPP;
2813
2814 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2815 if (err)
2816 return err;
2817
2818 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2819 if (!msg)
2820 return -ENOMEM;
2821
2822 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2823 dev, dst, next_hop, &pinfo) < 0) {
2824 nlmsg_free(msg);
2825 return -ENOBUFS;
2826 }
2827
2828 return genlmsg_reply(msg, info);
2829 }
2830
2831 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
2832 {
2833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2834 struct net_device *dev = info->user_ptr[1];
2835 u8 *dst = NULL;
2836 u8 *next_hop = NULL;
2837
2838 if (!info->attrs[NL80211_ATTR_MAC])
2839 return -EINVAL;
2840
2841 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2842 return -EINVAL;
2843
2844 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2845 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2846
2847 if (!rdev->ops->change_mpath)
2848 return -EOPNOTSUPP;
2849
2850 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2851 return -EOPNOTSUPP;
2852
2853 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
2854 }
2855
2856 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
2857 {
2858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2859 struct net_device *dev = info->user_ptr[1];
2860 u8 *dst = NULL;
2861 u8 *next_hop = NULL;
2862
2863 if (!info->attrs[NL80211_ATTR_MAC])
2864 return -EINVAL;
2865
2866 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
2867 return -EINVAL;
2868
2869 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2870 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
2871
2872 if (!rdev->ops->add_mpath)
2873 return -EOPNOTSUPP;
2874
2875 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2876 return -EOPNOTSUPP;
2877
2878 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
2879 }
2880
2881 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
2882 {
2883 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2884 struct net_device *dev = info->user_ptr[1];
2885 u8 *dst = NULL;
2886
2887 if (info->attrs[NL80211_ATTR_MAC])
2888 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2889
2890 if (!rdev->ops->del_mpath)
2891 return -EOPNOTSUPP;
2892
2893 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
2894 }
2895
2896 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
2897 {
2898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2899 struct net_device *dev = info->user_ptr[1];
2900 struct bss_parameters params;
2901
2902 memset(&params, 0, sizeof(params));
2903 /* default to not changing parameters */
2904 params.use_cts_prot = -1;
2905 params.use_short_preamble = -1;
2906 params.use_short_slot_time = -1;
2907 params.ap_isolate = -1;
2908 params.ht_opmode = -1;
2909
2910 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
2911 params.use_cts_prot =
2912 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
2913 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
2914 params.use_short_preamble =
2915 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
2916 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
2917 params.use_short_slot_time =
2918 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
2919 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
2920 params.basic_rates =
2921 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2922 params.basic_rates_len =
2923 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
2924 }
2925 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
2926 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
2927 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
2928 params.ht_opmode =
2929 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
2930
2931 if (!rdev->ops->change_bss)
2932 return -EOPNOTSUPP;
2933
2934 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2935 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2936 return -EOPNOTSUPP;
2937
2938 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
2939 }
2940
2941 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
2942 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
2943 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
2944 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
2945 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
2946 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
2947 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
2948 };
2949
2950 static int parse_reg_rule(struct nlattr *tb[],
2951 struct ieee80211_reg_rule *reg_rule)
2952 {
2953 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
2954 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
2955
2956 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
2957 return -EINVAL;
2958 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
2959 return -EINVAL;
2960 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
2961 return -EINVAL;
2962 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
2963 return -EINVAL;
2964 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
2965 return -EINVAL;
2966
2967 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
2968
2969 freq_range->start_freq_khz =
2970 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
2971 freq_range->end_freq_khz =
2972 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
2973 freq_range->max_bandwidth_khz =
2974 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
2975
2976 power_rule->max_eirp =
2977 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
2978
2979 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
2980 power_rule->max_antenna_gain =
2981 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
2982
2983 return 0;
2984 }
2985
2986 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
2987 {
2988 int r;
2989 char *data = NULL;
2990
2991 /*
2992 * You should only get this when cfg80211 hasn't yet initialized
2993 * completely when built-in to the kernel right between the time
2994 * window between nl80211_init() and regulatory_init(), if that is
2995 * even possible.
2996 */
2997 mutex_lock(&cfg80211_mutex);
2998 if (unlikely(!cfg80211_regdomain)) {
2999 mutex_unlock(&cfg80211_mutex);
3000 return -EINPROGRESS;
3001 }
3002 mutex_unlock(&cfg80211_mutex);
3003
3004 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3005 return -EINVAL;
3006
3007 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3008
3009 r = regulatory_hint_user(data);
3010
3011 return r;
3012 }
3013
3014 static int nl80211_get_mesh_config(struct sk_buff *skb,
3015 struct genl_info *info)
3016 {
3017 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3018 struct net_device *dev = info->user_ptr[1];
3019 struct wireless_dev *wdev = dev->ieee80211_ptr;
3020 struct mesh_config cur_params;
3021 int err = 0;
3022 void *hdr;
3023 struct nlattr *pinfoattr;
3024 struct sk_buff *msg;
3025
3026 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3027 return -EOPNOTSUPP;
3028
3029 if (!rdev->ops->get_mesh_config)
3030 return -EOPNOTSUPP;
3031
3032 wdev_lock(wdev);
3033 /* If not connected, get default parameters */
3034 if (!wdev->mesh_id_len)
3035 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3036 else
3037 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3038 &cur_params);
3039 wdev_unlock(wdev);
3040
3041 if (err)
3042 return err;
3043
3044 /* Draw up a netlink message to send back */
3045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3046 if (!msg)
3047 return -ENOMEM;
3048 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3049 NL80211_CMD_GET_MESH_CONFIG);
3050 if (!hdr)
3051 goto out;
3052 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3053 if (!pinfoattr)
3054 goto nla_put_failure;
3055 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3056 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3057 cur_params.dot11MeshRetryTimeout);
3058 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3059 cur_params.dot11MeshConfirmTimeout);
3060 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3061 cur_params.dot11MeshHoldingTimeout);
3062 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3063 cur_params.dot11MeshMaxPeerLinks);
3064 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3065 cur_params.dot11MeshMaxRetries);
3066 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3067 cur_params.dot11MeshTTL);
3068 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3069 cur_params.element_ttl);
3070 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3071 cur_params.auto_open_plinks);
3072 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3073 cur_params.dot11MeshHWMPmaxPREQretries);
3074 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3075 cur_params.path_refresh_time);
3076 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3077 cur_params.min_discovery_timeout);
3078 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3079 cur_params.dot11MeshHWMPactivePathTimeout);
3080 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3081 cur_params.dot11MeshHWMPpreqMinInterval);
3082 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3083 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3084 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3085 cur_params.dot11MeshHWMPRootMode);
3086 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3087 cur_params.dot11MeshHWMPRannInterval);
3088 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3089 cur_params.dot11MeshGateAnnouncementProtocol);
3090 nla_nest_end(msg, pinfoattr);
3091 genlmsg_end(msg, hdr);
3092 return genlmsg_reply(msg, info);
3093
3094 nla_put_failure:
3095 genlmsg_cancel(msg, hdr);
3096 out:
3097 nlmsg_free(msg);
3098 return -ENOBUFS;
3099 }
3100
3101 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3102 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3103 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3104 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3105 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3106 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3107 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3108 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3109 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3110
3111 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3112 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3113 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3114 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3115 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3116 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3117 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3118 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3119 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3120 };
3121
3122 static const struct nla_policy
3123 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3124 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3125 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3126 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3127 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3128 .len = IEEE80211_MAX_DATA_LEN },
3129 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3130 };
3131
3132 static int nl80211_parse_mesh_config(struct genl_info *info,
3133 struct mesh_config *cfg,
3134 u32 *mask_out)
3135 {
3136 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3137 u32 mask = 0;
3138
3139 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3140 do {\
3141 if (table[attr_num]) {\
3142 cfg->param = nla_fn(table[attr_num]); \
3143 mask |= (1 << (attr_num - 1)); \
3144 } \
3145 } while (0);\
3146
3147
3148 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3149 return -EINVAL;
3150 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3151 info->attrs[NL80211_ATTR_MESH_CONFIG],
3152 nl80211_meshconf_params_policy))
3153 return -EINVAL;
3154
3155 /* This makes sure that there aren't more than 32 mesh config
3156 * parameters (otherwise our bitfield scheme would not work.) */
3157 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3158
3159 /* Fill in the params struct */
3160 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3161 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3162 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3163 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3164 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3165 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3167 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3169 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3171 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3172 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3173 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3174 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3175 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3177 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3178 nla_get_u8);
3179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3180 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3182 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3183 nla_get_u16);
3184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3185 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3186 nla_get_u32);
3187 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3188 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3189 nla_get_u16);
3190 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3191 dot11MeshHWMPnetDiameterTraversalTime,
3192 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3193 nla_get_u16);
3194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3195 dot11MeshHWMPRootMode, mask,
3196 NL80211_MESHCONF_HWMP_ROOTMODE,
3197 nla_get_u8);
3198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3199 dot11MeshHWMPRannInterval, mask,
3200 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3201 nla_get_u16);
3202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3203 dot11MeshGateAnnouncementProtocol, mask,
3204 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3205 nla_get_u8);
3206 if (mask_out)
3207 *mask_out = mask;
3208
3209 return 0;
3210
3211 #undef FILL_IN_MESH_PARAM_IF_SET
3212 }
3213
3214 static int nl80211_parse_mesh_setup(struct genl_info *info,
3215 struct mesh_setup *setup)
3216 {
3217 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3218
3219 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3220 return -EINVAL;
3221 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3222 info->attrs[NL80211_ATTR_MESH_SETUP],
3223 nl80211_mesh_setup_params_policy))
3224 return -EINVAL;
3225
3226 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3227 setup->path_sel_proto =
3228 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3229 IEEE80211_PATH_PROTOCOL_VENDOR :
3230 IEEE80211_PATH_PROTOCOL_HWMP;
3231
3232 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3233 setup->path_metric =
3234 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3235 IEEE80211_PATH_METRIC_VENDOR :
3236 IEEE80211_PATH_METRIC_AIRTIME;
3237
3238
3239 if (tb[NL80211_MESH_SETUP_IE]) {
3240 struct nlattr *ieattr =
3241 tb[NL80211_MESH_SETUP_IE];
3242 if (!is_valid_ie_attr(ieattr))
3243 return -EINVAL;
3244 setup->ie = nla_data(ieattr);
3245 setup->ie_len = nla_len(ieattr);
3246 }
3247 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3248 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3249
3250 return 0;
3251 }
3252
3253 static int nl80211_update_mesh_config(struct sk_buff *skb,
3254 struct genl_info *info)
3255 {
3256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3257 struct net_device *dev = info->user_ptr[1];
3258 struct wireless_dev *wdev = dev->ieee80211_ptr;
3259 struct mesh_config cfg;
3260 u32 mask;
3261 int err;
3262
3263 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3264 return -EOPNOTSUPP;
3265
3266 if (!rdev->ops->update_mesh_config)
3267 return -EOPNOTSUPP;
3268
3269 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3270 if (err)
3271 return err;
3272
3273 wdev_lock(wdev);
3274 if (!wdev->mesh_id_len)
3275 err = -ENOLINK;
3276
3277 if (!err)
3278 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3279 mask, &cfg);
3280
3281 wdev_unlock(wdev);
3282
3283 return err;
3284 }
3285
3286 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3287 {
3288 struct sk_buff *msg;
3289 void *hdr = NULL;
3290 struct nlattr *nl_reg_rules;
3291 unsigned int i;
3292 int err = -EINVAL;
3293
3294 mutex_lock(&cfg80211_mutex);
3295
3296 if (!cfg80211_regdomain)
3297 goto out;
3298
3299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3300 if (!msg) {
3301 err = -ENOBUFS;
3302 goto out;
3303 }
3304
3305 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3306 NL80211_CMD_GET_REG);
3307 if (!hdr)
3308 goto put_failure;
3309
3310 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3311 cfg80211_regdomain->alpha2);
3312
3313 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3314 if (!nl_reg_rules)
3315 goto nla_put_failure;
3316
3317 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3318 struct nlattr *nl_reg_rule;
3319 const struct ieee80211_reg_rule *reg_rule;
3320 const struct ieee80211_freq_range *freq_range;
3321 const struct ieee80211_power_rule *power_rule;
3322
3323 reg_rule = &cfg80211_regdomain->reg_rules[i];
3324 freq_range = &reg_rule->freq_range;
3325 power_rule = &reg_rule->power_rule;
3326
3327 nl_reg_rule = nla_nest_start(msg, i);
3328 if (!nl_reg_rule)
3329 goto nla_put_failure;
3330
3331 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3332 reg_rule->flags);
3333 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3334 freq_range->start_freq_khz);
3335 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3336 freq_range->end_freq_khz);
3337 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3338 freq_range->max_bandwidth_khz);
3339 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3340 power_rule->max_antenna_gain);
3341 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3342 power_rule->max_eirp);
3343
3344 nla_nest_end(msg, nl_reg_rule);
3345 }
3346
3347 nla_nest_end(msg, nl_reg_rules);
3348
3349 genlmsg_end(msg, hdr);
3350 err = genlmsg_reply(msg, info);
3351 goto out;
3352
3353 nla_put_failure:
3354 genlmsg_cancel(msg, hdr);
3355 put_failure:
3356 nlmsg_free(msg);
3357 err = -EMSGSIZE;
3358 out:
3359 mutex_unlock(&cfg80211_mutex);
3360 return err;
3361 }
3362
3363 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3364 {
3365 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3366 struct nlattr *nl_reg_rule;
3367 char *alpha2 = NULL;
3368 int rem_reg_rules = 0, r = 0;
3369 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3370 struct ieee80211_regdomain *rd = NULL;
3371
3372 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3373 return -EINVAL;
3374
3375 if (!info->attrs[NL80211_ATTR_REG_RULES])
3376 return -EINVAL;
3377
3378 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3379
3380 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3381 rem_reg_rules) {
3382 num_rules++;
3383 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3384 return -EINVAL;
3385 }
3386
3387 mutex_lock(&cfg80211_mutex);
3388
3389 if (!reg_is_valid_request(alpha2)) {
3390 r = -EINVAL;
3391 goto bad_reg;
3392 }
3393
3394 size_of_regd = sizeof(struct ieee80211_regdomain) +
3395 (num_rules * sizeof(struct ieee80211_reg_rule));
3396
3397 rd = kzalloc(size_of_regd, GFP_KERNEL);
3398 if (!rd) {
3399 r = -ENOMEM;
3400 goto bad_reg;
3401 }
3402
3403 rd->n_reg_rules = num_rules;
3404 rd->alpha2[0] = alpha2[0];
3405 rd->alpha2[1] = alpha2[1];
3406
3407 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3408 rem_reg_rules) {
3409 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3410 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3411 reg_rule_policy);
3412 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3413 if (r)
3414 goto bad_reg;
3415
3416 rule_idx++;
3417
3418 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3419 r = -EINVAL;
3420 goto bad_reg;
3421 }
3422 }
3423
3424 BUG_ON(rule_idx != num_rules);
3425
3426 r = set_regdom(rd);
3427
3428 mutex_unlock(&cfg80211_mutex);
3429
3430 return r;
3431
3432 bad_reg:
3433 mutex_unlock(&cfg80211_mutex);
3434 kfree(rd);
3435 return r;
3436 }
3437
3438 static int validate_scan_freqs(struct nlattr *freqs)
3439 {
3440 struct nlattr *attr1, *attr2;
3441 int n_channels = 0, tmp1, tmp2;
3442
3443 nla_for_each_nested(attr1, freqs, tmp1) {
3444 n_channels++;
3445 /*
3446 * Some hardware has a limited channel list for
3447 * scanning, and it is pretty much nonsensical
3448 * to scan for a channel twice, so disallow that
3449 * and don't require drivers to check that the
3450 * channel list they get isn't longer than what
3451 * they can scan, as long as they can scan all
3452 * the channels they registered at once.
3453 */
3454 nla_for_each_nested(attr2, freqs, tmp2)
3455 if (attr1 != attr2 &&
3456 nla_get_u32(attr1) == nla_get_u32(attr2))
3457 return 0;
3458 }
3459
3460 return n_channels;
3461 }
3462
3463 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3464 {
3465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3466 struct net_device *dev = info->user_ptr[1];
3467 struct cfg80211_scan_request *request;
3468 struct nlattr *attr;
3469 struct wiphy *wiphy;
3470 int err, tmp, n_ssids = 0, n_channels, i;
3471 size_t ie_len;
3472
3473 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3474 return -EINVAL;
3475
3476 wiphy = &rdev->wiphy;
3477
3478 if (!rdev->ops->scan)
3479 return -EOPNOTSUPP;
3480
3481 if (rdev->scan_req)
3482 return -EBUSY;
3483
3484 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3485 n_channels = validate_scan_freqs(
3486 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3487 if (!n_channels)
3488 return -EINVAL;
3489 } else {
3490 enum ieee80211_band band;
3491 n_channels = 0;
3492
3493 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3494 if (wiphy->bands[band])
3495 n_channels += wiphy->bands[band]->n_channels;
3496 }
3497
3498 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3499 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3500 n_ssids++;
3501
3502 if (n_ssids > wiphy->max_scan_ssids)
3503 return -EINVAL;
3504
3505 if (info->attrs[NL80211_ATTR_IE])
3506 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3507 else
3508 ie_len = 0;
3509
3510 if (ie_len > wiphy->max_scan_ie_len)
3511 return -EINVAL;
3512
3513 request = kzalloc(sizeof(*request)
3514 + sizeof(*request->ssids) * n_ssids
3515 + sizeof(*request->channels) * n_channels
3516 + ie_len, GFP_KERNEL);
3517 if (!request)
3518 return -ENOMEM;
3519
3520 if (n_ssids)
3521 request->ssids = (void *)&request->channels[n_channels];
3522 request->n_ssids = n_ssids;
3523 if (ie_len) {
3524 if (request->ssids)
3525 request->ie = (void *)(request->ssids + n_ssids);
3526 else
3527 request->ie = (void *)(request->channels + n_channels);
3528 }
3529
3530 i = 0;
3531 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3532 /* user specified, bail out if channel not found */
3533 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3534 struct ieee80211_channel *chan;
3535
3536 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3537
3538 if (!chan) {
3539 err = -EINVAL;
3540 goto out_free;
3541 }
3542
3543 /* ignore disabled channels */
3544 if (chan->flags & IEEE80211_CHAN_DISABLED)
3545 continue;
3546
3547 request->channels[i] = chan;
3548 i++;
3549 }
3550 } else {
3551 enum ieee80211_band band;
3552
3553 /* all channels */
3554 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3555 int j;
3556 if (!wiphy->bands[band])
3557 continue;
3558 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3559 struct ieee80211_channel *chan;
3560
3561 chan = &wiphy->bands[band]->channels[j];
3562
3563 if (chan->flags & IEEE80211_CHAN_DISABLED)
3564 continue;
3565
3566 request->channels[i] = chan;
3567 i++;
3568 }
3569 }
3570 }
3571
3572 if (!i) {
3573 err = -EINVAL;
3574 goto out_free;
3575 }
3576
3577 request->n_channels = i;
3578
3579 i = 0;
3580 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3581 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3582 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3583 err = -EINVAL;
3584 goto out_free;
3585 }
3586 request->ssids[i].ssid_len = nla_len(attr);
3587 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3588 i++;
3589 }
3590 }
3591
3592 if (info->attrs[NL80211_ATTR_IE]) {
3593 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3594 memcpy((void *)request->ie,
3595 nla_data(info->attrs[NL80211_ATTR_IE]),
3596 request->ie_len);
3597 }
3598
3599 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3600 if (wiphy->bands[i])
3601 request->rates[i] =
3602 (1 << wiphy->bands[i]->n_bitrates) - 1;
3603
3604 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3605 nla_for_each_nested(attr,
3606 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3607 tmp) {
3608 enum ieee80211_band band = nla_type(attr);
3609
3610 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3611 err = -EINVAL;
3612 goto out_free;
3613 }
3614 err = ieee80211_get_ratemask(wiphy->bands[band],
3615 nla_data(attr),
3616 nla_len(attr),
3617 &request->rates[band]);
3618 if (err)
3619 goto out_free;
3620 }
3621 }
3622
3623 request->dev = dev;
3624 request->wiphy = &rdev->wiphy;
3625
3626 rdev->scan_req = request;
3627 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3628
3629 if (!err) {
3630 nl80211_send_scan_start(rdev, dev);
3631 dev_hold(dev);
3632 } else {
3633 out_free:
3634 rdev->scan_req = NULL;
3635 kfree(request);
3636 }
3637
3638 return err;
3639 }
3640
3641 static int nl80211_start_sched_scan(struct sk_buff *skb,
3642 struct genl_info *info)
3643 {
3644 struct cfg80211_sched_scan_request *request;
3645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3646 struct net_device *dev = info->user_ptr[1];
3647 struct nlattr *attr;
3648 struct wiphy *wiphy;
3649 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3650 u32 interval;
3651 enum ieee80211_band band;
3652 size_t ie_len;
3653 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3654
3655 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3656 !rdev->ops->sched_scan_start)
3657 return -EOPNOTSUPP;
3658
3659 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3660 return -EINVAL;
3661
3662 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3663 return -EINVAL;
3664
3665 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3666 if (interval == 0)
3667 return -EINVAL;
3668
3669 wiphy = &rdev->wiphy;
3670
3671 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3672 n_channels = validate_scan_freqs(
3673 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3674 if (!n_channels)
3675 return -EINVAL;
3676 } else {
3677 n_channels = 0;
3678
3679 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3680 if (wiphy->bands[band])
3681 n_channels += wiphy->bands[band]->n_channels;
3682 }
3683
3684 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3685 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3686 tmp)
3687 n_ssids++;
3688
3689 if (n_ssids > wiphy->max_sched_scan_ssids)
3690 return -EINVAL;
3691
3692 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3693 nla_for_each_nested(attr,
3694 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3695 tmp)
3696 n_match_sets++;
3697
3698 if (n_match_sets > wiphy->max_match_sets)
3699 return -EINVAL;
3700
3701 if (info->attrs[NL80211_ATTR_IE])
3702 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3703 else
3704 ie_len = 0;
3705
3706 if (ie_len > wiphy->max_sched_scan_ie_len)
3707 return -EINVAL;
3708
3709 mutex_lock(&rdev->sched_scan_mtx);
3710
3711 if (rdev->sched_scan_req) {
3712 err = -EINPROGRESS;
3713 goto out;
3714 }
3715
3716 request = kzalloc(sizeof(*request)
3717 + sizeof(*request->ssids) * n_ssids
3718 + sizeof(*request->match_sets) * n_match_sets
3719 + sizeof(*request->channels) * n_channels
3720 + ie_len, GFP_KERNEL);
3721 if (!request) {
3722 err = -ENOMEM;
3723 goto out;
3724 }
3725
3726 if (n_ssids)
3727 request->ssids = (void *)&request->channels[n_channels];
3728 request->n_ssids = n_ssids;
3729 if (ie_len) {
3730 if (request->ssids)
3731 request->ie = (void *)(request->ssids + n_ssids);
3732 else
3733 request->ie = (void *)(request->channels + n_channels);
3734 }
3735
3736 if (n_match_sets) {
3737 if (request->ie)
3738 request->match_sets = (void *)(request->ie + ie_len);
3739 else if (request->ssids)
3740 request->match_sets =
3741 (void *)(request->ssids + n_ssids);
3742 else
3743 request->match_sets =
3744 (void *)(request->channels + n_channels);
3745 }
3746 request->n_match_sets = n_match_sets;
3747
3748 i = 0;
3749 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3750 /* user specified, bail out if channel not found */
3751 nla_for_each_nested(attr,
3752 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3753 tmp) {
3754 struct ieee80211_channel *chan;
3755
3756 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3757
3758 if (!chan) {
3759 err = -EINVAL;
3760 goto out_free;
3761 }
3762
3763 /* ignore disabled channels */
3764 if (chan->flags & IEEE80211_CHAN_DISABLED)
3765 continue;
3766
3767 request->channels[i] = chan;
3768 i++;
3769 }
3770 } else {
3771 /* all channels */
3772 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3773 int j;
3774 if (!wiphy->bands[band])
3775 continue;
3776 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3777 struct ieee80211_channel *chan;
3778
3779 chan = &wiphy->bands[band]->channels[j];
3780
3781 if (chan->flags & IEEE80211_CHAN_DISABLED)
3782 continue;
3783
3784 request->channels[i] = chan;
3785 i++;
3786 }
3787 }
3788 }
3789
3790 if (!i) {
3791 err = -EINVAL;
3792 goto out_free;
3793 }
3794
3795 request->n_channels = i;
3796
3797 i = 0;
3798 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3799 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3800 tmp) {
3801 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3802 err = -EINVAL;
3803 goto out_free;
3804 }
3805 request->ssids[i].ssid_len = nla_len(attr);
3806 memcpy(request->ssids[i].ssid, nla_data(attr),
3807 nla_len(attr));
3808 i++;
3809 }
3810 }
3811
3812 i = 0;
3813 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
3814 nla_for_each_nested(attr,
3815 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3816 tmp) {
3817 struct nlattr *ssid;
3818
3819 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
3820 nla_data(attr), nla_len(attr),
3821 nl80211_match_policy);
3822 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
3823 if (ssid) {
3824 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
3825 err = -EINVAL;
3826 goto out_free;
3827 }
3828 memcpy(request->match_sets[i].ssid.ssid,
3829 nla_data(ssid), nla_len(ssid));
3830 request->match_sets[i].ssid.ssid_len =
3831 nla_len(ssid);
3832 }
3833 i++;
3834 }
3835 }
3836
3837 if (info->attrs[NL80211_ATTR_IE]) {
3838 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3839 memcpy((void *)request->ie,
3840 nla_data(info->attrs[NL80211_ATTR_IE]),
3841 request->ie_len);
3842 }
3843
3844 request->dev = dev;
3845 request->wiphy = &rdev->wiphy;
3846 request->interval = interval;
3847
3848 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
3849 if (!err) {
3850 rdev->sched_scan_req = request;
3851 nl80211_send_sched_scan(rdev, dev,
3852 NL80211_CMD_START_SCHED_SCAN);
3853 goto out;
3854 }
3855
3856 out_free:
3857 kfree(request);
3858 out:
3859 mutex_unlock(&rdev->sched_scan_mtx);
3860 return err;
3861 }
3862
3863 static int nl80211_stop_sched_scan(struct sk_buff *skb,
3864 struct genl_info *info)
3865 {
3866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3867 int err;
3868
3869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3870 !rdev->ops->sched_scan_stop)
3871 return -EOPNOTSUPP;
3872
3873 mutex_lock(&rdev->sched_scan_mtx);
3874 err = __cfg80211_stop_sched_scan(rdev, false);
3875 mutex_unlock(&rdev->sched_scan_mtx);
3876
3877 return err;
3878 }
3879
3880 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
3881 u32 seq, int flags,
3882 struct cfg80211_registered_device *rdev,
3883 struct wireless_dev *wdev,
3884 struct cfg80211_internal_bss *intbss)
3885 {
3886 struct cfg80211_bss *res = &intbss->pub;
3887 void *hdr;
3888 struct nlattr *bss;
3889 int i;
3890
3891 ASSERT_WDEV_LOCK(wdev);
3892
3893 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
3894 NL80211_CMD_NEW_SCAN_RESULTS);
3895 if (!hdr)
3896 return -1;
3897
3898 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
3899
3900 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
3901 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
3902
3903 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
3904 if (!bss)
3905 goto nla_put_failure;
3906 if (!is_zero_ether_addr(res->bssid))
3907 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
3908 if (res->information_elements && res->len_information_elements)
3909 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
3910 res->len_information_elements,
3911 res->information_elements);
3912 if (res->beacon_ies && res->len_beacon_ies &&
3913 res->beacon_ies != res->information_elements)
3914 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
3915 res->len_beacon_ies, res->beacon_ies);
3916 if (res->tsf)
3917 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
3918 if (res->beacon_interval)
3919 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
3920 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
3921 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
3922 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
3923 jiffies_to_msecs(jiffies - intbss->ts));
3924
3925 switch (rdev->wiphy.signal_type) {
3926 case CFG80211_SIGNAL_TYPE_MBM:
3927 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
3928 break;
3929 case CFG80211_SIGNAL_TYPE_UNSPEC:
3930 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
3931 break;
3932 default:
3933 break;
3934 }
3935
3936 switch (wdev->iftype) {
3937 case NL80211_IFTYPE_P2P_CLIENT:
3938 case NL80211_IFTYPE_STATION:
3939 if (intbss == wdev->current_bss)
3940 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3941 NL80211_BSS_STATUS_ASSOCIATED);
3942 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
3943 if (intbss != wdev->auth_bsses[i])
3944 continue;
3945 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3946 NL80211_BSS_STATUS_AUTHENTICATED);
3947 break;
3948 }
3949 break;
3950 case NL80211_IFTYPE_ADHOC:
3951 if (intbss == wdev->current_bss)
3952 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
3953 NL80211_BSS_STATUS_IBSS_JOINED);
3954 break;
3955 default:
3956 break;
3957 }
3958
3959 nla_nest_end(msg, bss);
3960
3961 return genlmsg_end(msg, hdr);
3962
3963 nla_put_failure:
3964 genlmsg_cancel(msg, hdr);
3965 return -EMSGSIZE;
3966 }
3967
3968 static int nl80211_dump_scan(struct sk_buff *skb,
3969 struct netlink_callback *cb)
3970 {
3971 struct cfg80211_registered_device *rdev;
3972 struct net_device *dev;
3973 struct cfg80211_internal_bss *scan;
3974 struct wireless_dev *wdev;
3975 int start = cb->args[1], idx = 0;
3976 int err;
3977
3978 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
3979 if (err)
3980 return err;
3981
3982 wdev = dev->ieee80211_ptr;
3983
3984 wdev_lock(wdev);
3985 spin_lock_bh(&rdev->bss_lock);
3986 cfg80211_bss_expire(rdev);
3987
3988 cb->seq = rdev->bss_generation;
3989
3990 list_for_each_entry(scan, &rdev->bss_list, list) {
3991 if (++idx <= start)
3992 continue;
3993 if (nl80211_send_bss(skb, cb,
3994 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3995 rdev, wdev, scan) < 0) {
3996 idx--;
3997 break;
3998 }
3999 }
4000
4001 spin_unlock_bh(&rdev->bss_lock);
4002 wdev_unlock(wdev);
4003
4004 cb->args[1] = idx;
4005 nl80211_finish_netdev_dump(rdev);
4006
4007 return skb->len;
4008 }
4009
4010 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4011 int flags, struct net_device *dev,
4012 struct survey_info *survey)
4013 {
4014 void *hdr;
4015 struct nlattr *infoattr;
4016
4017 hdr = nl80211hdr_put(msg, pid, seq, flags,
4018 NL80211_CMD_NEW_SURVEY_RESULTS);
4019 if (!hdr)
4020 return -ENOMEM;
4021
4022 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4023
4024 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4025 if (!infoattr)
4026 goto nla_put_failure;
4027
4028 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4029 survey->channel->center_freq);
4030 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4031 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4032 survey->noise);
4033 if (survey->filled & SURVEY_INFO_IN_USE)
4034 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4035 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4036 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4037 survey->channel_time);
4038 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4039 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4040 survey->channel_time_busy);
4041 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4042 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4043 survey->channel_time_ext_busy);
4044 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4045 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4046 survey->channel_time_rx);
4047 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4048 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4049 survey->channel_time_tx);
4050
4051 nla_nest_end(msg, infoattr);
4052
4053 return genlmsg_end(msg, hdr);
4054
4055 nla_put_failure:
4056 genlmsg_cancel(msg, hdr);
4057 return -EMSGSIZE;
4058 }
4059
4060 static int nl80211_dump_survey(struct sk_buff *skb,
4061 struct netlink_callback *cb)
4062 {
4063 struct survey_info survey;
4064 struct cfg80211_registered_device *dev;
4065 struct net_device *netdev;
4066 int survey_idx = cb->args[1];
4067 int res;
4068
4069 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4070 if (res)
4071 return res;
4072
4073 if (!dev->ops->dump_survey) {
4074 res = -EOPNOTSUPP;
4075 goto out_err;
4076 }
4077
4078 while (1) {
4079 struct ieee80211_channel *chan;
4080
4081 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4082 &survey);
4083 if (res == -ENOENT)
4084 break;
4085 if (res)
4086 goto out_err;
4087
4088 /* Survey without a channel doesn't make sense */
4089 if (!survey.channel) {
4090 res = -EINVAL;
4091 goto out;
4092 }
4093
4094 chan = ieee80211_get_channel(&dev->wiphy,
4095 survey.channel->center_freq);
4096 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4097 survey_idx++;
4098 continue;
4099 }
4100
4101 if (nl80211_send_survey(skb,
4102 NETLINK_CB(cb->skb).pid,
4103 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4104 netdev,
4105 &survey) < 0)
4106 goto out;
4107 survey_idx++;
4108 }
4109
4110 out:
4111 cb->args[1] = survey_idx;
4112 res = skb->len;
4113 out_err:
4114 nl80211_finish_netdev_dump(dev);
4115 return res;
4116 }
4117
4118 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4119 {
4120 return auth_type <= NL80211_AUTHTYPE_MAX;
4121 }
4122
4123 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4124 {
4125 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4126 NL80211_WPA_VERSION_2));
4127 }
4128
4129 static bool nl80211_valid_akm_suite(u32 akm)
4130 {
4131 return akm == WLAN_AKM_SUITE_8021X ||
4132 akm == WLAN_AKM_SUITE_PSK;
4133 }
4134
4135 static bool nl80211_valid_cipher_suite(u32 cipher)
4136 {
4137 return cipher == WLAN_CIPHER_SUITE_WEP40 ||
4138 cipher == WLAN_CIPHER_SUITE_WEP104 ||
4139 cipher == WLAN_CIPHER_SUITE_TKIP ||
4140 cipher == WLAN_CIPHER_SUITE_CCMP ||
4141 cipher == WLAN_CIPHER_SUITE_AES_CMAC;
4142 }
4143
4144
4145 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4146 {
4147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4148 struct net_device *dev = info->user_ptr[1];
4149 struct ieee80211_channel *chan;
4150 const u8 *bssid, *ssid, *ie = NULL;
4151 int err, ssid_len, ie_len = 0;
4152 enum nl80211_auth_type auth_type;
4153 struct key_parse key;
4154 bool local_state_change;
4155
4156 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4157 return -EINVAL;
4158
4159 if (!info->attrs[NL80211_ATTR_MAC])
4160 return -EINVAL;
4161
4162 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4163 return -EINVAL;
4164
4165 if (!info->attrs[NL80211_ATTR_SSID])
4166 return -EINVAL;
4167
4168 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4169 return -EINVAL;
4170
4171 err = nl80211_parse_key(info, &key);
4172 if (err)
4173 return err;
4174
4175 if (key.idx >= 0) {
4176 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4177 return -EINVAL;
4178 if (!key.p.key || !key.p.key_len)
4179 return -EINVAL;
4180 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4181 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4182 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4183 key.p.key_len != WLAN_KEY_LEN_WEP104))
4184 return -EINVAL;
4185 if (key.idx > 4)
4186 return -EINVAL;
4187 } else {
4188 key.p.key_len = 0;
4189 key.p.key = NULL;
4190 }
4191
4192 if (key.idx >= 0) {
4193 int i;
4194 bool ok = false;
4195 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4196 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4197 ok = true;
4198 break;
4199 }
4200 }
4201 if (!ok)
4202 return -EINVAL;
4203 }
4204
4205 if (!rdev->ops->auth)
4206 return -EOPNOTSUPP;
4207
4208 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4209 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4210 return -EOPNOTSUPP;
4211
4212 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4213 chan = ieee80211_get_channel(&rdev->wiphy,
4214 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4215 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4216 return -EINVAL;
4217
4218 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4219 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4220
4221 if (info->attrs[NL80211_ATTR_IE]) {
4222 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4223 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4224 }
4225
4226 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4227 if (!nl80211_valid_auth_type(auth_type))
4228 return -EINVAL;
4229
4230 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4231
4232 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4233 ssid, ssid_len, ie, ie_len,
4234 key.p.key, key.p.key_len, key.idx,
4235 local_state_change);
4236 }
4237
4238 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4239 struct genl_info *info,
4240 struct cfg80211_crypto_settings *settings,
4241 int cipher_limit)
4242 {
4243 memset(settings, 0, sizeof(*settings));
4244
4245 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4246
4247 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4248 u16 proto;
4249 proto = nla_get_u16(
4250 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4251 settings->control_port_ethertype = cpu_to_be16(proto);
4252 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4253 proto != ETH_P_PAE)
4254 return -EINVAL;
4255 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4256 settings->control_port_no_encrypt = true;
4257 } else
4258 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4259
4260 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4261 void *data;
4262 int len, i;
4263
4264 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4265 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4266 settings->n_ciphers_pairwise = len / sizeof(u32);
4267
4268 if (len % sizeof(u32))
4269 return -EINVAL;
4270
4271 if (settings->n_ciphers_pairwise > cipher_limit)
4272 return -EINVAL;
4273
4274 memcpy(settings->ciphers_pairwise, data, len);
4275
4276 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4277 if (!nl80211_valid_cipher_suite(
4278 settings->ciphers_pairwise[i]))
4279 return -EINVAL;
4280 }
4281
4282 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4283 settings->cipher_group =
4284 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4285 if (!nl80211_valid_cipher_suite(settings->cipher_group))
4286 return -EINVAL;
4287 }
4288
4289 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4290 settings->wpa_versions =
4291 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4292 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4293 return -EINVAL;
4294 }
4295
4296 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4297 void *data;
4298 int len, i;
4299
4300 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4301 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4302 settings->n_akm_suites = len / sizeof(u32);
4303
4304 if (len % sizeof(u32))
4305 return -EINVAL;
4306
4307 memcpy(settings->akm_suites, data, len);
4308
4309 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4310 if (!nl80211_valid_akm_suite(settings->akm_suites[i]))
4311 return -EINVAL;
4312 }
4313
4314 return 0;
4315 }
4316
4317 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4318 {
4319 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4320 struct net_device *dev = info->user_ptr[1];
4321 struct cfg80211_crypto_settings crypto;
4322 struct ieee80211_channel *chan;
4323 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4324 int err, ssid_len, ie_len = 0;
4325 bool use_mfp = false;
4326
4327 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4328 return -EINVAL;
4329
4330 if (!info->attrs[NL80211_ATTR_MAC] ||
4331 !info->attrs[NL80211_ATTR_SSID] ||
4332 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4333 return -EINVAL;
4334
4335 if (!rdev->ops->assoc)
4336 return -EOPNOTSUPP;
4337
4338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4339 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4340 return -EOPNOTSUPP;
4341
4342 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4343
4344 chan = ieee80211_get_channel(&rdev->wiphy,
4345 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4346 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4347 return -EINVAL;
4348
4349 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4350 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4351
4352 if (info->attrs[NL80211_ATTR_IE]) {
4353 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4354 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4355 }
4356
4357 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4358 enum nl80211_mfp mfp =
4359 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4360 if (mfp == NL80211_MFP_REQUIRED)
4361 use_mfp = true;
4362 else if (mfp != NL80211_MFP_NO)
4363 return -EINVAL;
4364 }
4365
4366 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4367 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4368
4369 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4370 if (!err)
4371 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4372 ssid, ssid_len, ie, ie_len, use_mfp,
4373 &crypto);
4374
4375 return err;
4376 }
4377
4378 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4379 {
4380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4381 struct net_device *dev = info->user_ptr[1];
4382 const u8 *ie = NULL, *bssid;
4383 int ie_len = 0;
4384 u16 reason_code;
4385 bool local_state_change;
4386
4387 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4388 return -EINVAL;
4389
4390 if (!info->attrs[NL80211_ATTR_MAC])
4391 return -EINVAL;
4392
4393 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4394 return -EINVAL;
4395
4396 if (!rdev->ops->deauth)
4397 return -EOPNOTSUPP;
4398
4399 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4400 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4401 return -EOPNOTSUPP;
4402
4403 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4404
4405 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4406 if (reason_code == 0) {
4407 /* Reason Code 0 is reserved */
4408 return -EINVAL;
4409 }
4410
4411 if (info->attrs[NL80211_ATTR_IE]) {
4412 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4413 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4414 }
4415
4416 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4417
4418 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4419 local_state_change);
4420 }
4421
4422 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4423 {
4424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4425 struct net_device *dev = info->user_ptr[1];
4426 const u8 *ie = NULL, *bssid;
4427 int ie_len = 0;
4428 u16 reason_code;
4429 bool local_state_change;
4430
4431 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4432 return -EINVAL;
4433
4434 if (!info->attrs[NL80211_ATTR_MAC])
4435 return -EINVAL;
4436
4437 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4438 return -EINVAL;
4439
4440 if (!rdev->ops->disassoc)
4441 return -EOPNOTSUPP;
4442
4443 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4444 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4445 return -EOPNOTSUPP;
4446
4447 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4448
4449 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4450 if (reason_code == 0) {
4451 /* Reason Code 0 is reserved */
4452 return -EINVAL;
4453 }
4454
4455 if (info->attrs[NL80211_ATTR_IE]) {
4456 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4457 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4458 }
4459
4460 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4461
4462 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4463 local_state_change);
4464 }
4465
4466 static bool
4467 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4468 int mcast_rate[IEEE80211_NUM_BANDS],
4469 int rateval)
4470 {
4471 struct wiphy *wiphy = &rdev->wiphy;
4472 bool found = false;
4473 int band, i;
4474
4475 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4476 struct ieee80211_supported_band *sband;
4477
4478 sband = wiphy->bands[band];
4479 if (!sband)
4480 continue;
4481
4482 for (i = 0; i < sband->n_bitrates; i++) {
4483 if (sband->bitrates[i].bitrate == rateval) {
4484 mcast_rate[band] = i + 1;
4485 found = true;
4486 break;
4487 }
4488 }
4489 }
4490
4491 return found;
4492 }
4493
4494 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4495 {
4496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4497 struct net_device *dev = info->user_ptr[1];
4498 struct cfg80211_ibss_params ibss;
4499 struct wiphy *wiphy;
4500 struct cfg80211_cached_keys *connkeys = NULL;
4501 int err;
4502
4503 memset(&ibss, 0, sizeof(ibss));
4504
4505 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4506 return -EINVAL;
4507
4508 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4509 !info->attrs[NL80211_ATTR_SSID] ||
4510 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4511 return -EINVAL;
4512
4513 ibss.beacon_interval = 100;
4514
4515 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4516 ibss.beacon_interval =
4517 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4518 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4519 return -EINVAL;
4520 }
4521
4522 if (!rdev->ops->join_ibss)
4523 return -EOPNOTSUPP;
4524
4525 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4526 return -EOPNOTSUPP;
4527
4528 wiphy = &rdev->wiphy;
4529
4530 if (info->attrs[NL80211_ATTR_MAC])
4531 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4532 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4533 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4534
4535 if (info->attrs[NL80211_ATTR_IE]) {
4536 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4537 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4538 }
4539
4540 ibss.channel = ieee80211_get_channel(wiphy,
4541 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4542 if (!ibss.channel ||
4543 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4544 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4545 return -EINVAL;
4546
4547 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4548 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4549
4550 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4551 u8 *rates =
4552 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4553 int n_rates =
4554 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4555 struct ieee80211_supported_band *sband =
4556 wiphy->bands[ibss.channel->band];
4557 int err;
4558
4559 err = ieee80211_get_ratemask(sband, rates, n_rates,
4560 &ibss.basic_rates);
4561 if (err)
4562 return err;
4563 }
4564
4565 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4566 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4567 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4568 return -EINVAL;
4569
4570 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4571 connkeys = nl80211_parse_connkeys(rdev,
4572 info->attrs[NL80211_ATTR_KEYS]);
4573 if (IS_ERR(connkeys))
4574 return PTR_ERR(connkeys);
4575 }
4576
4577 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4578 if (err)
4579 kfree(connkeys);
4580 return err;
4581 }
4582
4583 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4584 {
4585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4586 struct net_device *dev = info->user_ptr[1];
4587
4588 if (!rdev->ops->leave_ibss)
4589 return -EOPNOTSUPP;
4590
4591 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4592 return -EOPNOTSUPP;
4593
4594 return cfg80211_leave_ibss(rdev, dev, false);
4595 }
4596
4597 #ifdef CONFIG_NL80211_TESTMODE
4598 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4599 .name = "testmode",
4600 };
4601
4602 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4603 {
4604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4605 int err;
4606
4607 if (!info->attrs[NL80211_ATTR_TESTDATA])
4608 return -EINVAL;
4609
4610 err = -EOPNOTSUPP;
4611 if (rdev->ops->testmode_cmd) {
4612 rdev->testmode_info = info;
4613 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4614 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4615 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4616 rdev->testmode_info = NULL;
4617 }
4618
4619 return err;
4620 }
4621
4622 static int nl80211_testmode_dump(struct sk_buff *skb,
4623 struct netlink_callback *cb)
4624 {
4625 struct cfg80211_registered_device *dev;
4626 int err;
4627 long phy_idx;
4628 void *data = NULL;
4629 int data_len = 0;
4630
4631 if (cb->args[0]) {
4632 /*
4633 * 0 is a valid index, but not valid for args[0],
4634 * so we need to offset by 1.
4635 */
4636 phy_idx = cb->args[0] - 1;
4637 } else {
4638 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4639 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4640 nl80211_policy);
4641 if (err)
4642 return err;
4643 if (!nl80211_fam.attrbuf[NL80211_ATTR_WIPHY])
4644 return -EINVAL;
4645 phy_idx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4646 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4647 cb->args[1] =
4648 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4649 }
4650
4651 if (cb->args[1]) {
4652 data = nla_data((void *)cb->args[1]);
4653 data_len = nla_len((void *)cb->args[1]);
4654 }
4655
4656 mutex_lock(&cfg80211_mutex);
4657 dev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4658 if (!dev) {
4659 mutex_unlock(&cfg80211_mutex);
4660 return -ENOENT;
4661 }
4662 cfg80211_lock_rdev(dev);
4663 mutex_unlock(&cfg80211_mutex);
4664
4665 if (!dev->ops->testmode_dump) {
4666 err = -EOPNOTSUPP;
4667 goto out_err;
4668 }
4669
4670 while (1) {
4671 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4672 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4673 NL80211_CMD_TESTMODE);
4674 struct nlattr *tmdata;
4675
4676 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, dev->wiphy_idx) < 0) {
4677 genlmsg_cancel(skb, hdr);
4678 break;
4679 }
4680
4681 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4682 if (!tmdata) {
4683 genlmsg_cancel(skb, hdr);
4684 break;
4685 }
4686 err = dev->ops->testmode_dump(&dev->wiphy, skb, cb,
4687 data, data_len);
4688 nla_nest_end(skb, tmdata);
4689
4690 if (err == -ENOBUFS || err == -ENOENT) {
4691 genlmsg_cancel(skb, hdr);
4692 break;
4693 } else if (err) {
4694 genlmsg_cancel(skb, hdr);
4695 goto out_err;
4696 }
4697
4698 genlmsg_end(skb, hdr);
4699 }
4700
4701 err = skb->len;
4702 /* see above */
4703 cb->args[0] = phy_idx + 1;
4704 out_err:
4705 cfg80211_unlock_rdev(dev);
4706 return err;
4707 }
4708
4709 static struct sk_buff *
4710 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
4711 int approxlen, u32 pid, u32 seq, gfp_t gfp)
4712 {
4713 struct sk_buff *skb;
4714 void *hdr;
4715 struct nlattr *data;
4716
4717 skb = nlmsg_new(approxlen + 100, gfp);
4718 if (!skb)
4719 return NULL;
4720
4721 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
4722 if (!hdr) {
4723 kfree_skb(skb);
4724 return NULL;
4725 }
4726
4727 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
4728 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4729
4730 ((void **)skb->cb)[0] = rdev;
4731 ((void **)skb->cb)[1] = hdr;
4732 ((void **)skb->cb)[2] = data;
4733
4734 return skb;
4735
4736 nla_put_failure:
4737 kfree_skb(skb);
4738 return NULL;
4739 }
4740
4741 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
4742 int approxlen)
4743 {
4744 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4745
4746 if (WARN_ON(!rdev->testmode_info))
4747 return NULL;
4748
4749 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
4750 rdev->testmode_info->snd_pid,
4751 rdev->testmode_info->snd_seq,
4752 GFP_KERNEL);
4753 }
4754 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
4755
4756 int cfg80211_testmode_reply(struct sk_buff *skb)
4757 {
4758 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
4759 void *hdr = ((void **)skb->cb)[1];
4760 struct nlattr *data = ((void **)skb->cb)[2];
4761
4762 if (WARN_ON(!rdev->testmode_info)) {
4763 kfree_skb(skb);
4764 return -EINVAL;
4765 }
4766
4767 nla_nest_end(skb, data);
4768 genlmsg_end(skb, hdr);
4769 return genlmsg_reply(skb, rdev->testmode_info);
4770 }
4771 EXPORT_SYMBOL(cfg80211_testmode_reply);
4772
4773 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
4774 int approxlen, gfp_t gfp)
4775 {
4776 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
4777
4778 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
4779 }
4780 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
4781
4782 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
4783 {
4784 void *hdr = ((void **)skb->cb)[1];
4785 struct nlattr *data = ((void **)skb->cb)[2];
4786
4787 nla_nest_end(skb, data);
4788 genlmsg_end(skb, hdr);
4789 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
4790 }
4791 EXPORT_SYMBOL(cfg80211_testmode_event);
4792 #endif
4793
4794 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
4795 {
4796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4797 struct net_device *dev = info->user_ptr[1];
4798 struct cfg80211_connect_params connect;
4799 struct wiphy *wiphy;
4800 struct cfg80211_cached_keys *connkeys = NULL;
4801 int err;
4802
4803 memset(&connect, 0, sizeof(connect));
4804
4805 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4806 return -EINVAL;
4807
4808 if (!info->attrs[NL80211_ATTR_SSID] ||
4809 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4810 return -EINVAL;
4811
4812 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4813 connect.auth_type =
4814 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4815 if (!nl80211_valid_auth_type(connect.auth_type))
4816 return -EINVAL;
4817 } else
4818 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4819
4820 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
4821
4822 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
4823 NL80211_MAX_NR_CIPHER_SUITES);
4824 if (err)
4825 return err;
4826
4827 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4828 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4829 return -EOPNOTSUPP;
4830
4831 wiphy = &rdev->wiphy;
4832
4833 if (info->attrs[NL80211_ATTR_MAC])
4834 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4835 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4836 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4837
4838 if (info->attrs[NL80211_ATTR_IE]) {
4839 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4840 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4841 }
4842
4843 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4844 connect.channel =
4845 ieee80211_get_channel(wiphy,
4846 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4847 if (!connect.channel ||
4848 connect.channel->flags & IEEE80211_CHAN_DISABLED)
4849 return -EINVAL;
4850 }
4851
4852 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4853 connkeys = nl80211_parse_connkeys(rdev,
4854 info->attrs[NL80211_ATTR_KEYS]);
4855 if (IS_ERR(connkeys))
4856 return PTR_ERR(connkeys);
4857 }
4858
4859 err = cfg80211_connect(rdev, dev, &connect, connkeys);
4860 if (err)
4861 kfree(connkeys);
4862 return err;
4863 }
4864
4865 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
4866 {
4867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4868 struct net_device *dev = info->user_ptr[1];
4869 u16 reason;
4870
4871 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4872 reason = WLAN_REASON_DEAUTH_LEAVING;
4873 else
4874 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4875
4876 if (reason == 0)
4877 return -EINVAL;
4878
4879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4880 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4881 return -EOPNOTSUPP;
4882
4883 return cfg80211_disconnect(rdev, dev, reason, true);
4884 }
4885
4886 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
4887 {
4888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4889 struct net *net;
4890 int err;
4891 u32 pid;
4892
4893 if (!info->attrs[NL80211_ATTR_PID])
4894 return -EINVAL;
4895
4896 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
4897
4898 net = get_net_ns_by_pid(pid);
4899 if (IS_ERR(net))
4900 return PTR_ERR(net);
4901
4902 err = 0;
4903
4904 /* check if anything to do */
4905 if (!net_eq(wiphy_net(&rdev->wiphy), net))
4906 err = cfg80211_switch_netns(rdev, net);
4907
4908 put_net(net);
4909 return err;
4910 }
4911
4912 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
4913 {
4914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4915 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
4916 struct cfg80211_pmksa *pmksa) = NULL;
4917 struct net_device *dev = info->user_ptr[1];
4918 struct cfg80211_pmksa pmksa;
4919
4920 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
4921
4922 if (!info->attrs[NL80211_ATTR_MAC])
4923 return -EINVAL;
4924
4925 if (!info->attrs[NL80211_ATTR_PMKID])
4926 return -EINVAL;
4927
4928 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
4929 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4930
4931 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4932 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4933 return -EOPNOTSUPP;
4934
4935 switch (info->genlhdr->cmd) {
4936 case NL80211_CMD_SET_PMKSA:
4937 rdev_ops = rdev->ops->set_pmksa;
4938 break;
4939 case NL80211_CMD_DEL_PMKSA:
4940 rdev_ops = rdev->ops->del_pmksa;
4941 break;
4942 default:
4943 WARN_ON(1);
4944 break;
4945 }
4946
4947 if (!rdev_ops)
4948 return -EOPNOTSUPP;
4949
4950 return rdev_ops(&rdev->wiphy, dev, &pmksa);
4951 }
4952
4953 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
4954 {
4955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4956 struct net_device *dev = info->user_ptr[1];
4957
4958 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4959 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4960 return -EOPNOTSUPP;
4961
4962 if (!rdev->ops->flush_pmksa)
4963 return -EOPNOTSUPP;
4964
4965 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
4966 }
4967
4968 static int nl80211_remain_on_channel(struct sk_buff *skb,
4969 struct genl_info *info)
4970 {
4971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4972 struct net_device *dev = info->user_ptr[1];
4973 struct ieee80211_channel *chan;
4974 struct sk_buff *msg;
4975 void *hdr;
4976 u64 cookie;
4977 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
4978 u32 freq, duration;
4979 int err;
4980
4981 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4982 !info->attrs[NL80211_ATTR_DURATION])
4983 return -EINVAL;
4984
4985 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
4986
4987 /*
4988 * We should be on that channel for at least one jiffie,
4989 * and more than 5 seconds seems excessive.
4990 */
4991 if (!duration || !msecs_to_jiffies(duration) ||
4992 duration > rdev->wiphy.max_remain_on_channel_duration)
4993 return -EINVAL;
4994
4995 if (!rdev->ops->remain_on_channel)
4996 return -EOPNOTSUPP;
4997
4998 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4999 channel_type = nla_get_u32(
5000 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5001 if (channel_type != NL80211_CHAN_NO_HT &&
5002 channel_type != NL80211_CHAN_HT20 &&
5003 channel_type != NL80211_CHAN_HT40PLUS &&
5004 channel_type != NL80211_CHAN_HT40MINUS)
5005 return -EINVAL;
5006 }
5007
5008 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5009 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5010 if (chan == NULL)
5011 return -EINVAL;
5012
5013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5014 if (!msg)
5015 return -ENOMEM;
5016
5017 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5018 NL80211_CMD_REMAIN_ON_CHANNEL);
5019
5020 if (IS_ERR(hdr)) {
5021 err = PTR_ERR(hdr);
5022 goto free_msg;
5023 }
5024
5025 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5026 channel_type, duration, &cookie);
5027
5028 if (err)
5029 goto free_msg;
5030
5031 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5032
5033 genlmsg_end(msg, hdr);
5034
5035 return genlmsg_reply(msg, info);
5036
5037 nla_put_failure:
5038 err = -ENOBUFS;
5039 free_msg:
5040 nlmsg_free(msg);
5041 return err;
5042 }
5043
5044 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5045 struct genl_info *info)
5046 {
5047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5048 struct net_device *dev = info->user_ptr[1];
5049 u64 cookie;
5050
5051 if (!info->attrs[NL80211_ATTR_COOKIE])
5052 return -EINVAL;
5053
5054 if (!rdev->ops->cancel_remain_on_channel)
5055 return -EOPNOTSUPP;
5056
5057 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5058
5059 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5060 }
5061
5062 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5063 u8 *rates, u8 rates_len)
5064 {
5065 u8 i;
5066 u32 mask = 0;
5067
5068 for (i = 0; i < rates_len; i++) {
5069 int rate = (rates[i] & 0x7f) * 5;
5070 int ridx;
5071 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5072 struct ieee80211_rate *srate =
5073 &sband->bitrates[ridx];
5074 if (rate == srate->bitrate) {
5075 mask |= 1 << ridx;
5076 break;
5077 }
5078 }
5079 if (ridx == sband->n_bitrates)
5080 return 0; /* rate not found */
5081 }
5082
5083 return mask;
5084 }
5085
5086 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5087 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5088 .len = NL80211_MAX_SUPP_RATES },
5089 };
5090
5091 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5092 struct genl_info *info)
5093 {
5094 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5095 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5096 struct cfg80211_bitrate_mask mask;
5097 int rem, i;
5098 struct net_device *dev = info->user_ptr[1];
5099 struct nlattr *tx_rates;
5100 struct ieee80211_supported_band *sband;
5101
5102 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5103 return -EINVAL;
5104
5105 if (!rdev->ops->set_bitrate_mask)
5106 return -EOPNOTSUPP;
5107
5108 memset(&mask, 0, sizeof(mask));
5109 /* Default to all rates enabled */
5110 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5111 sband = rdev->wiphy.bands[i];
5112 mask.control[i].legacy =
5113 sband ? (1 << sband->n_bitrates) - 1 : 0;
5114 }
5115
5116 /*
5117 * The nested attribute uses enum nl80211_band as the index. This maps
5118 * directly to the enum ieee80211_band values used in cfg80211.
5119 */
5120 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5121 {
5122 enum ieee80211_band band = nla_type(tx_rates);
5123 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5124 return -EINVAL;
5125 sband = rdev->wiphy.bands[band];
5126 if (sband == NULL)
5127 return -EINVAL;
5128 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5129 nla_len(tx_rates), nl80211_txattr_policy);
5130 if (tb[NL80211_TXRATE_LEGACY]) {
5131 mask.control[band].legacy = rateset_to_mask(
5132 sband,
5133 nla_data(tb[NL80211_TXRATE_LEGACY]),
5134 nla_len(tb[NL80211_TXRATE_LEGACY]));
5135 if (mask.control[band].legacy == 0)
5136 return -EINVAL;
5137 }
5138 }
5139
5140 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5141 }
5142
5143 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5144 {
5145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5146 struct net_device *dev = info->user_ptr[1];
5147 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5148
5149 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5150 return -EINVAL;
5151
5152 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5153 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5154
5155 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5156 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5157 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5158 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5159 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5160 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5162 return -EOPNOTSUPP;
5163
5164 /* not much point in registering if we can't reply */
5165 if (!rdev->ops->mgmt_tx)
5166 return -EOPNOTSUPP;
5167
5168 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5169 frame_type,
5170 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5171 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5172 }
5173
5174 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5175 {
5176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5177 struct net_device *dev = info->user_ptr[1];
5178 struct ieee80211_channel *chan;
5179 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5180 bool channel_type_valid = false;
5181 u32 freq;
5182 int err;
5183 void *hdr;
5184 u64 cookie;
5185 struct sk_buff *msg;
5186 unsigned int wait = 0;
5187 bool offchan;
5188
5189 if (!info->attrs[NL80211_ATTR_FRAME] ||
5190 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5191 return -EINVAL;
5192
5193 if (!rdev->ops->mgmt_tx)
5194 return -EOPNOTSUPP;
5195
5196 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5197 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5198 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5199 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5200 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5201 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5202 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5203 return -EOPNOTSUPP;
5204
5205 if (info->attrs[NL80211_ATTR_DURATION]) {
5206 if (!rdev->ops->mgmt_tx_cancel_wait)
5207 return -EINVAL;
5208 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5209 }
5210
5211 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5212 channel_type = nla_get_u32(
5213 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5214 if (channel_type != NL80211_CHAN_NO_HT &&
5215 channel_type != NL80211_CHAN_HT20 &&
5216 channel_type != NL80211_CHAN_HT40PLUS &&
5217 channel_type != NL80211_CHAN_HT40MINUS)
5218 return -EINVAL;
5219 channel_type_valid = true;
5220 }
5221
5222 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5223
5224 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5225 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5226 if (chan == NULL)
5227 return -EINVAL;
5228
5229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5230 if (!msg)
5231 return -ENOMEM;
5232
5233 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5234 NL80211_CMD_FRAME);
5235
5236 if (IS_ERR(hdr)) {
5237 err = PTR_ERR(hdr);
5238 goto free_msg;
5239 }
5240 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5241 channel_type_valid, wait,
5242 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5243 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5244 &cookie);
5245 if (err)
5246 goto free_msg;
5247
5248 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5249
5250 genlmsg_end(msg, hdr);
5251 return genlmsg_reply(msg, info);
5252
5253 nla_put_failure:
5254 err = -ENOBUFS;
5255 free_msg:
5256 nlmsg_free(msg);
5257 return err;
5258 }
5259
5260 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5261 {
5262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5263 struct net_device *dev = info->user_ptr[1];
5264 u64 cookie;
5265
5266 if (!info->attrs[NL80211_ATTR_COOKIE])
5267 return -EINVAL;
5268
5269 if (!rdev->ops->mgmt_tx_cancel_wait)
5270 return -EOPNOTSUPP;
5271
5272 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5273 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5274 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5276 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5277 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5278 return -EOPNOTSUPP;
5279
5280 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5281
5282 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5283 }
5284
5285 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5286 {
5287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5288 struct wireless_dev *wdev;
5289 struct net_device *dev = info->user_ptr[1];
5290 u8 ps_state;
5291 bool state;
5292 int err;
5293
5294 if (!info->attrs[NL80211_ATTR_PS_STATE])
5295 return -EINVAL;
5296
5297 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5298
5299 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5300 return -EINVAL;
5301
5302 wdev = dev->ieee80211_ptr;
5303
5304 if (!rdev->ops->set_power_mgmt)
5305 return -EOPNOTSUPP;
5306
5307 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5308
5309 if (state == wdev->ps)
5310 return 0;
5311
5312 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5313 wdev->ps_timeout);
5314 if (!err)
5315 wdev->ps = state;
5316 return err;
5317 }
5318
5319 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5320 {
5321 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5322 enum nl80211_ps_state ps_state;
5323 struct wireless_dev *wdev;
5324 struct net_device *dev = info->user_ptr[1];
5325 struct sk_buff *msg;
5326 void *hdr;
5327 int err;
5328
5329 wdev = dev->ieee80211_ptr;
5330
5331 if (!rdev->ops->set_power_mgmt)
5332 return -EOPNOTSUPP;
5333
5334 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5335 if (!msg)
5336 return -ENOMEM;
5337
5338 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5339 NL80211_CMD_GET_POWER_SAVE);
5340 if (!hdr) {
5341 err = -ENOBUFS;
5342 goto free_msg;
5343 }
5344
5345 if (wdev->ps)
5346 ps_state = NL80211_PS_ENABLED;
5347 else
5348 ps_state = NL80211_PS_DISABLED;
5349
5350 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5351
5352 genlmsg_end(msg, hdr);
5353 return genlmsg_reply(msg, info);
5354
5355 nla_put_failure:
5356 err = -ENOBUFS;
5357 free_msg:
5358 nlmsg_free(msg);
5359 return err;
5360 }
5361
5362 static struct nla_policy
5363 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5364 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5365 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5366 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5367 };
5368
5369 static int nl80211_set_cqm_rssi(struct genl_info *info,
5370 s32 threshold, u32 hysteresis)
5371 {
5372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5373 struct wireless_dev *wdev;
5374 struct net_device *dev = info->user_ptr[1];
5375
5376 if (threshold > 0)
5377 return -EINVAL;
5378
5379 wdev = dev->ieee80211_ptr;
5380
5381 if (!rdev->ops->set_cqm_rssi_config)
5382 return -EOPNOTSUPP;
5383
5384 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5385 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5386 return -EOPNOTSUPP;
5387
5388 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5389 threshold, hysteresis);
5390 }
5391
5392 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5393 {
5394 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5395 struct nlattr *cqm;
5396 int err;
5397
5398 cqm = info->attrs[NL80211_ATTR_CQM];
5399 if (!cqm) {
5400 err = -EINVAL;
5401 goto out;
5402 }
5403
5404 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5405 nl80211_attr_cqm_policy);
5406 if (err)
5407 goto out;
5408
5409 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5410 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5411 s32 threshold;
5412 u32 hysteresis;
5413 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5414 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5415 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5416 } else
5417 err = -EINVAL;
5418
5419 out:
5420 return err;
5421 }
5422
5423 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5424 {
5425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5426 struct net_device *dev = info->user_ptr[1];
5427 struct mesh_config cfg;
5428 struct mesh_setup setup;
5429 int err;
5430
5431 /* start with default */
5432 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5433 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5434
5435 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5436 /* and parse parameters if given */
5437 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5438 if (err)
5439 return err;
5440 }
5441
5442 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5443 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5444 return -EINVAL;
5445
5446 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5447 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5448
5449 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5450 /* parse additional setup parameters if given */
5451 err = nl80211_parse_mesh_setup(info, &setup);
5452 if (err)
5453 return err;
5454 }
5455
5456 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5457 }
5458
5459 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5460 {
5461 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5462 struct net_device *dev = info->user_ptr[1];
5463
5464 return cfg80211_leave_mesh(rdev, dev);
5465 }
5466
5467 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5468 {
5469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5470 struct sk_buff *msg;
5471 void *hdr;
5472
5473 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5474 return -EOPNOTSUPP;
5475
5476 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5477 if (!msg)
5478 return -ENOMEM;
5479
5480 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5481 NL80211_CMD_GET_WOWLAN);
5482 if (!hdr)
5483 goto nla_put_failure;
5484
5485 if (rdev->wowlan) {
5486 struct nlattr *nl_wowlan;
5487
5488 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5489 if (!nl_wowlan)
5490 goto nla_put_failure;
5491
5492 if (rdev->wowlan->any)
5493 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5494 if (rdev->wowlan->disconnect)
5495 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5496 if (rdev->wowlan->magic_pkt)
5497 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5498 if (rdev->wowlan->gtk_rekey_failure)
5499 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5500 if (rdev->wowlan->eap_identity_req)
5501 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5502 if (rdev->wowlan->four_way_handshake)
5503 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5504 if (rdev->wowlan->rfkill_release)
5505 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5506 if (rdev->wowlan->n_patterns) {
5507 struct nlattr *nl_pats, *nl_pat;
5508 int i, pat_len;
5509
5510 nl_pats = nla_nest_start(msg,
5511 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5512 if (!nl_pats)
5513 goto nla_put_failure;
5514
5515 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5516 nl_pat = nla_nest_start(msg, i + 1);
5517 if (!nl_pat)
5518 goto nla_put_failure;
5519 pat_len = rdev->wowlan->patterns[i].pattern_len;
5520 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5521 DIV_ROUND_UP(pat_len, 8),
5522 rdev->wowlan->patterns[i].mask);
5523 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5524 pat_len,
5525 rdev->wowlan->patterns[i].pattern);
5526 nla_nest_end(msg, nl_pat);
5527 }
5528 nla_nest_end(msg, nl_pats);
5529 }
5530
5531 nla_nest_end(msg, nl_wowlan);
5532 }
5533
5534 genlmsg_end(msg, hdr);
5535 return genlmsg_reply(msg, info);
5536
5537 nla_put_failure:
5538 nlmsg_free(msg);
5539 return -ENOBUFS;
5540 }
5541
5542 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5543 {
5544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5545 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5546 struct cfg80211_wowlan no_triggers = {};
5547 struct cfg80211_wowlan new_triggers = {};
5548 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
5549 int err, i;
5550
5551 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5552 return -EOPNOTSUPP;
5553
5554 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
5555 goto no_triggers;
5556
5557 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
5558 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5559 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
5560 nl80211_wowlan_policy);
5561 if (err)
5562 return err;
5563
5564 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
5565 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
5566 return -EINVAL;
5567 new_triggers.any = true;
5568 }
5569
5570 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
5571 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
5572 return -EINVAL;
5573 new_triggers.disconnect = true;
5574 }
5575
5576 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
5577 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
5578 return -EINVAL;
5579 new_triggers.magic_pkt = true;
5580 }
5581
5582 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
5583 return -EINVAL;
5584
5585 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
5586 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
5587 return -EINVAL;
5588 new_triggers.gtk_rekey_failure = true;
5589 }
5590
5591 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
5592 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
5593 return -EINVAL;
5594 new_triggers.eap_identity_req = true;
5595 }
5596
5597 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
5598 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
5599 return -EINVAL;
5600 new_triggers.four_way_handshake = true;
5601 }
5602
5603 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
5604 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
5605 return -EINVAL;
5606 new_triggers.rfkill_release = true;
5607 }
5608
5609 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
5610 struct nlattr *pat;
5611 int n_patterns = 0;
5612 int rem, pat_len, mask_len;
5613 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
5614
5615 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5616 rem)
5617 n_patterns++;
5618 if (n_patterns > wowlan->n_patterns)
5619 return -EINVAL;
5620
5621 new_triggers.patterns = kcalloc(n_patterns,
5622 sizeof(new_triggers.patterns[0]),
5623 GFP_KERNEL);
5624 if (!new_triggers.patterns)
5625 return -ENOMEM;
5626
5627 new_triggers.n_patterns = n_patterns;
5628 i = 0;
5629
5630 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
5631 rem) {
5632 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
5633 nla_data(pat), nla_len(pat), NULL);
5634 err = -EINVAL;
5635 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
5636 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
5637 goto error;
5638 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
5639 mask_len = DIV_ROUND_UP(pat_len, 8);
5640 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
5641 mask_len)
5642 goto error;
5643 if (pat_len > wowlan->pattern_max_len ||
5644 pat_len < wowlan->pattern_min_len)
5645 goto error;
5646
5647 new_triggers.patterns[i].mask =
5648 kmalloc(mask_len + pat_len, GFP_KERNEL);
5649 if (!new_triggers.patterns[i].mask) {
5650 err = -ENOMEM;
5651 goto error;
5652 }
5653 new_triggers.patterns[i].pattern =
5654 new_triggers.patterns[i].mask + mask_len;
5655 memcpy(new_triggers.patterns[i].mask,
5656 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
5657 mask_len);
5658 new_triggers.patterns[i].pattern_len = pat_len;
5659 memcpy(new_triggers.patterns[i].pattern,
5660 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
5661 pat_len);
5662 i++;
5663 }
5664 }
5665
5666 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
5667 struct cfg80211_wowlan *ntrig;
5668 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
5669 GFP_KERNEL);
5670 if (!ntrig) {
5671 err = -ENOMEM;
5672 goto error;
5673 }
5674 cfg80211_rdev_free_wowlan(rdev);
5675 rdev->wowlan = ntrig;
5676 } else {
5677 no_triggers:
5678 cfg80211_rdev_free_wowlan(rdev);
5679 rdev->wowlan = NULL;
5680 }
5681
5682 return 0;
5683 error:
5684 for (i = 0; i < new_triggers.n_patterns; i++)
5685 kfree(new_triggers.patterns[i].mask);
5686 kfree(new_triggers.patterns);
5687 return err;
5688 }
5689
5690 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
5691 {
5692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5693 struct net_device *dev = info->user_ptr[1];
5694 struct wireless_dev *wdev = dev->ieee80211_ptr;
5695 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
5696 struct cfg80211_gtk_rekey_data rekey_data;
5697 int err;
5698
5699 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
5700 return -EINVAL;
5701
5702 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
5703 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
5704 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
5705 nl80211_rekey_policy);
5706 if (err)
5707 return err;
5708
5709 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
5710 return -ERANGE;
5711 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
5712 return -ERANGE;
5713 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
5714 return -ERANGE;
5715
5716 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
5717 NL80211_KEK_LEN);
5718 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
5719 NL80211_KCK_LEN);
5720 memcpy(rekey_data.replay_ctr,
5721 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
5722 NL80211_REPLAY_CTR_LEN);
5723
5724 wdev_lock(wdev);
5725 if (!wdev->current_bss) {
5726 err = -ENOTCONN;
5727 goto out;
5728 }
5729
5730 if (!rdev->ops->set_rekey_data) {
5731 err = -EOPNOTSUPP;
5732 goto out;
5733 }
5734
5735 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
5736 out:
5737 wdev_unlock(wdev);
5738 return err;
5739 }
5740
5741 #define NL80211_FLAG_NEED_WIPHY 0x01
5742 #define NL80211_FLAG_NEED_NETDEV 0x02
5743 #define NL80211_FLAG_NEED_RTNL 0x04
5744 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
5745 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
5746 NL80211_FLAG_CHECK_NETDEV_UP)
5747
5748 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
5749 struct genl_info *info)
5750 {
5751 struct cfg80211_registered_device *rdev;
5752 struct net_device *dev;
5753 int err;
5754 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
5755
5756 if (rtnl)
5757 rtnl_lock();
5758
5759 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
5760 rdev = cfg80211_get_dev_from_info(info);
5761 if (IS_ERR(rdev)) {
5762 if (rtnl)
5763 rtnl_unlock();
5764 return PTR_ERR(rdev);
5765 }
5766 info->user_ptr[0] = rdev;
5767 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
5768 err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
5769 if (err) {
5770 if (rtnl)
5771 rtnl_unlock();
5772 return err;
5773 }
5774 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
5775 !netif_running(dev)) {
5776 cfg80211_unlock_rdev(rdev);
5777 dev_put(dev);
5778 if (rtnl)
5779 rtnl_unlock();
5780 return -ENETDOWN;
5781 }
5782 info->user_ptr[0] = rdev;
5783 info->user_ptr[1] = dev;
5784 }
5785
5786 return 0;
5787 }
5788
5789 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
5790 struct genl_info *info)
5791 {
5792 if (info->user_ptr[0])
5793 cfg80211_unlock_rdev(info->user_ptr[0]);
5794 if (info->user_ptr[1])
5795 dev_put(info->user_ptr[1]);
5796 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
5797 rtnl_unlock();
5798 }
5799
5800 static struct genl_ops nl80211_ops[] = {
5801 {
5802 .cmd = NL80211_CMD_GET_WIPHY,
5803 .doit = nl80211_get_wiphy,
5804 .dumpit = nl80211_dump_wiphy,
5805 .policy = nl80211_policy,
5806 /* can be retrieved by unprivileged users */
5807 .internal_flags = NL80211_FLAG_NEED_WIPHY,
5808 },
5809 {
5810 .cmd = NL80211_CMD_SET_WIPHY,
5811 .doit = nl80211_set_wiphy,
5812 .policy = nl80211_policy,
5813 .flags = GENL_ADMIN_PERM,
5814 .internal_flags = NL80211_FLAG_NEED_RTNL,
5815 },
5816 {
5817 .cmd = NL80211_CMD_GET_INTERFACE,
5818 .doit = nl80211_get_interface,
5819 .dumpit = nl80211_dump_interface,
5820 .policy = nl80211_policy,
5821 /* can be retrieved by unprivileged users */
5822 .internal_flags = NL80211_FLAG_NEED_NETDEV,
5823 },
5824 {
5825 .cmd = NL80211_CMD_SET_INTERFACE,
5826 .doit = nl80211_set_interface,
5827 .policy = nl80211_policy,
5828 .flags = GENL_ADMIN_PERM,
5829 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5830 NL80211_FLAG_NEED_RTNL,
5831 },
5832 {
5833 .cmd = NL80211_CMD_NEW_INTERFACE,
5834 .doit = nl80211_new_interface,
5835 .policy = nl80211_policy,
5836 .flags = GENL_ADMIN_PERM,
5837 .internal_flags = NL80211_FLAG_NEED_WIPHY |
5838 NL80211_FLAG_NEED_RTNL,
5839 },
5840 {
5841 .cmd = NL80211_CMD_DEL_INTERFACE,
5842 .doit = nl80211_del_interface,
5843 .policy = nl80211_policy,
5844 .flags = GENL_ADMIN_PERM,
5845 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5846 NL80211_FLAG_NEED_RTNL,
5847 },
5848 {
5849 .cmd = NL80211_CMD_GET_KEY,
5850 .doit = nl80211_get_key,
5851 .policy = nl80211_policy,
5852 .flags = GENL_ADMIN_PERM,
5853 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5854 NL80211_FLAG_NEED_RTNL,
5855 },
5856 {
5857 .cmd = NL80211_CMD_SET_KEY,
5858 .doit = nl80211_set_key,
5859 .policy = nl80211_policy,
5860 .flags = GENL_ADMIN_PERM,
5861 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5862 NL80211_FLAG_NEED_RTNL,
5863 },
5864 {
5865 .cmd = NL80211_CMD_NEW_KEY,
5866 .doit = nl80211_new_key,
5867 .policy = nl80211_policy,
5868 .flags = GENL_ADMIN_PERM,
5869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5870 NL80211_FLAG_NEED_RTNL,
5871 },
5872 {
5873 .cmd = NL80211_CMD_DEL_KEY,
5874 .doit = nl80211_del_key,
5875 .policy = nl80211_policy,
5876 .flags = GENL_ADMIN_PERM,
5877 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5878 NL80211_FLAG_NEED_RTNL,
5879 },
5880 {
5881 .cmd = NL80211_CMD_SET_BEACON,
5882 .policy = nl80211_policy,
5883 .flags = GENL_ADMIN_PERM,
5884 .doit = nl80211_addset_beacon,
5885 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5886 NL80211_FLAG_NEED_RTNL,
5887 },
5888 {
5889 .cmd = NL80211_CMD_NEW_BEACON,
5890 .policy = nl80211_policy,
5891 .flags = GENL_ADMIN_PERM,
5892 .doit = nl80211_addset_beacon,
5893 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5894 NL80211_FLAG_NEED_RTNL,
5895 },
5896 {
5897 .cmd = NL80211_CMD_DEL_BEACON,
5898 .policy = nl80211_policy,
5899 .flags = GENL_ADMIN_PERM,
5900 .doit = nl80211_del_beacon,
5901 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5902 NL80211_FLAG_NEED_RTNL,
5903 },
5904 {
5905 .cmd = NL80211_CMD_GET_STATION,
5906 .doit = nl80211_get_station,
5907 .dumpit = nl80211_dump_station,
5908 .policy = nl80211_policy,
5909 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5910 NL80211_FLAG_NEED_RTNL,
5911 },
5912 {
5913 .cmd = NL80211_CMD_SET_STATION,
5914 .doit = nl80211_set_station,
5915 .policy = nl80211_policy,
5916 .flags = GENL_ADMIN_PERM,
5917 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5918 NL80211_FLAG_NEED_RTNL,
5919 },
5920 {
5921 .cmd = NL80211_CMD_NEW_STATION,
5922 .doit = nl80211_new_station,
5923 .policy = nl80211_policy,
5924 .flags = GENL_ADMIN_PERM,
5925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5926 NL80211_FLAG_NEED_RTNL,
5927 },
5928 {
5929 .cmd = NL80211_CMD_DEL_STATION,
5930 .doit = nl80211_del_station,
5931 .policy = nl80211_policy,
5932 .flags = GENL_ADMIN_PERM,
5933 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5934 NL80211_FLAG_NEED_RTNL,
5935 },
5936 {
5937 .cmd = NL80211_CMD_GET_MPATH,
5938 .doit = nl80211_get_mpath,
5939 .dumpit = nl80211_dump_mpath,
5940 .policy = nl80211_policy,
5941 .flags = GENL_ADMIN_PERM,
5942 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5943 NL80211_FLAG_NEED_RTNL,
5944 },
5945 {
5946 .cmd = NL80211_CMD_SET_MPATH,
5947 .doit = nl80211_set_mpath,
5948 .policy = nl80211_policy,
5949 .flags = GENL_ADMIN_PERM,
5950 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5951 NL80211_FLAG_NEED_RTNL,
5952 },
5953 {
5954 .cmd = NL80211_CMD_NEW_MPATH,
5955 .doit = nl80211_new_mpath,
5956 .policy = nl80211_policy,
5957 .flags = GENL_ADMIN_PERM,
5958 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
5959 NL80211_FLAG_NEED_RTNL,
5960 },
5961 {
5962 .cmd = NL80211_CMD_DEL_MPATH,
5963 .doit = nl80211_del_mpath,
5964 .policy = nl80211_policy,
5965 .flags = GENL_ADMIN_PERM,
5966 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5967 NL80211_FLAG_NEED_RTNL,
5968 },
5969 {
5970 .cmd = NL80211_CMD_SET_BSS,
5971 .doit = nl80211_set_bss,
5972 .policy = nl80211_policy,
5973 .flags = GENL_ADMIN_PERM,
5974 .internal_flags = NL80211_FLAG_NEED_NETDEV |
5975 NL80211_FLAG_NEED_RTNL,
5976 },
5977 {
5978 .cmd = NL80211_CMD_GET_REG,
5979 .doit = nl80211_get_reg,
5980 .policy = nl80211_policy,
5981 /* can be retrieved by unprivileged users */
5982 },
5983 {
5984 .cmd = NL80211_CMD_SET_REG,
5985 .doit = nl80211_set_reg,
5986 .policy = nl80211_policy,
5987 .flags = GENL_ADMIN_PERM,
5988 },
5989 {
5990 .cmd = NL80211_CMD_REQ_SET_REG,
5991 .doit = nl80211_req_set_reg,
5992 .policy = nl80211_policy,
5993 .flags = GENL_ADMIN_PERM,
5994 },
5995 {
5996 .cmd = NL80211_CMD_GET_MESH_CONFIG,
5997 .doit = nl80211_get_mesh_config,
5998 .policy = nl80211_policy,
5999 /* can be retrieved by unprivileged users */
6000 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6001 NL80211_FLAG_NEED_RTNL,
6002 },
6003 {
6004 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6005 .doit = nl80211_update_mesh_config,
6006 .policy = nl80211_policy,
6007 .flags = GENL_ADMIN_PERM,
6008 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6009 NL80211_FLAG_NEED_RTNL,
6010 },
6011 {
6012 .cmd = NL80211_CMD_TRIGGER_SCAN,
6013 .doit = nl80211_trigger_scan,
6014 .policy = nl80211_policy,
6015 .flags = GENL_ADMIN_PERM,
6016 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6017 NL80211_FLAG_NEED_RTNL,
6018 },
6019 {
6020 .cmd = NL80211_CMD_GET_SCAN,
6021 .policy = nl80211_policy,
6022 .dumpit = nl80211_dump_scan,
6023 },
6024 {
6025 .cmd = NL80211_CMD_START_SCHED_SCAN,
6026 .doit = nl80211_start_sched_scan,
6027 .policy = nl80211_policy,
6028 .flags = GENL_ADMIN_PERM,
6029 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6030 NL80211_FLAG_NEED_RTNL,
6031 },
6032 {
6033 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6034 .doit = nl80211_stop_sched_scan,
6035 .policy = nl80211_policy,
6036 .flags = GENL_ADMIN_PERM,
6037 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6038 NL80211_FLAG_NEED_RTNL,
6039 },
6040 {
6041 .cmd = NL80211_CMD_AUTHENTICATE,
6042 .doit = nl80211_authenticate,
6043 .policy = nl80211_policy,
6044 .flags = GENL_ADMIN_PERM,
6045 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6046 NL80211_FLAG_NEED_RTNL,
6047 },
6048 {
6049 .cmd = NL80211_CMD_ASSOCIATE,
6050 .doit = nl80211_associate,
6051 .policy = nl80211_policy,
6052 .flags = GENL_ADMIN_PERM,
6053 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6054 NL80211_FLAG_NEED_RTNL,
6055 },
6056 {
6057 .cmd = NL80211_CMD_DEAUTHENTICATE,
6058 .doit = nl80211_deauthenticate,
6059 .policy = nl80211_policy,
6060 .flags = GENL_ADMIN_PERM,
6061 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6062 NL80211_FLAG_NEED_RTNL,
6063 },
6064 {
6065 .cmd = NL80211_CMD_DISASSOCIATE,
6066 .doit = nl80211_disassociate,
6067 .policy = nl80211_policy,
6068 .flags = GENL_ADMIN_PERM,
6069 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6070 NL80211_FLAG_NEED_RTNL,
6071 },
6072 {
6073 .cmd = NL80211_CMD_JOIN_IBSS,
6074 .doit = nl80211_join_ibss,
6075 .policy = nl80211_policy,
6076 .flags = GENL_ADMIN_PERM,
6077 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6078 NL80211_FLAG_NEED_RTNL,
6079 },
6080 {
6081 .cmd = NL80211_CMD_LEAVE_IBSS,
6082 .doit = nl80211_leave_ibss,
6083 .policy = nl80211_policy,
6084 .flags = GENL_ADMIN_PERM,
6085 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6086 NL80211_FLAG_NEED_RTNL,
6087 },
6088 #ifdef CONFIG_NL80211_TESTMODE
6089 {
6090 .cmd = NL80211_CMD_TESTMODE,
6091 .doit = nl80211_testmode_do,
6092 .dumpit = nl80211_testmode_dump,
6093 .policy = nl80211_policy,
6094 .flags = GENL_ADMIN_PERM,
6095 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6096 NL80211_FLAG_NEED_RTNL,
6097 },
6098 #endif
6099 {
6100 .cmd = NL80211_CMD_CONNECT,
6101 .doit = nl80211_connect,
6102 .policy = nl80211_policy,
6103 .flags = GENL_ADMIN_PERM,
6104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6105 NL80211_FLAG_NEED_RTNL,
6106 },
6107 {
6108 .cmd = NL80211_CMD_DISCONNECT,
6109 .doit = nl80211_disconnect,
6110 .policy = nl80211_policy,
6111 .flags = GENL_ADMIN_PERM,
6112 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6113 NL80211_FLAG_NEED_RTNL,
6114 },
6115 {
6116 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6117 .doit = nl80211_wiphy_netns,
6118 .policy = nl80211_policy,
6119 .flags = GENL_ADMIN_PERM,
6120 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6121 NL80211_FLAG_NEED_RTNL,
6122 },
6123 {
6124 .cmd = NL80211_CMD_GET_SURVEY,
6125 .policy = nl80211_policy,
6126 .dumpit = nl80211_dump_survey,
6127 },
6128 {
6129 .cmd = NL80211_CMD_SET_PMKSA,
6130 .doit = nl80211_setdel_pmksa,
6131 .policy = nl80211_policy,
6132 .flags = GENL_ADMIN_PERM,
6133 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6134 NL80211_FLAG_NEED_RTNL,
6135 },
6136 {
6137 .cmd = NL80211_CMD_DEL_PMKSA,
6138 .doit = nl80211_setdel_pmksa,
6139 .policy = nl80211_policy,
6140 .flags = GENL_ADMIN_PERM,
6141 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6142 NL80211_FLAG_NEED_RTNL,
6143 },
6144 {
6145 .cmd = NL80211_CMD_FLUSH_PMKSA,
6146 .doit = nl80211_flush_pmksa,
6147 .policy = nl80211_policy,
6148 .flags = GENL_ADMIN_PERM,
6149 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6150 NL80211_FLAG_NEED_RTNL,
6151 },
6152 {
6153 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6154 .doit = nl80211_remain_on_channel,
6155 .policy = nl80211_policy,
6156 .flags = GENL_ADMIN_PERM,
6157 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6158 NL80211_FLAG_NEED_RTNL,
6159 },
6160 {
6161 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6162 .doit = nl80211_cancel_remain_on_channel,
6163 .policy = nl80211_policy,
6164 .flags = GENL_ADMIN_PERM,
6165 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6166 NL80211_FLAG_NEED_RTNL,
6167 },
6168 {
6169 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6170 .doit = nl80211_set_tx_bitrate_mask,
6171 .policy = nl80211_policy,
6172 .flags = GENL_ADMIN_PERM,
6173 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6174 NL80211_FLAG_NEED_RTNL,
6175 },
6176 {
6177 .cmd = NL80211_CMD_REGISTER_FRAME,
6178 .doit = nl80211_register_mgmt,
6179 .policy = nl80211_policy,
6180 .flags = GENL_ADMIN_PERM,
6181 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6182 NL80211_FLAG_NEED_RTNL,
6183 },
6184 {
6185 .cmd = NL80211_CMD_FRAME,
6186 .doit = nl80211_tx_mgmt,
6187 .policy = nl80211_policy,
6188 .flags = GENL_ADMIN_PERM,
6189 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6190 NL80211_FLAG_NEED_RTNL,
6191 },
6192 {
6193 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6194 .doit = nl80211_tx_mgmt_cancel_wait,
6195 .policy = nl80211_policy,
6196 .flags = GENL_ADMIN_PERM,
6197 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6198 NL80211_FLAG_NEED_RTNL,
6199 },
6200 {
6201 .cmd = NL80211_CMD_SET_POWER_SAVE,
6202 .doit = nl80211_set_power_save,
6203 .policy = nl80211_policy,
6204 .flags = GENL_ADMIN_PERM,
6205 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6206 NL80211_FLAG_NEED_RTNL,
6207 },
6208 {
6209 .cmd = NL80211_CMD_GET_POWER_SAVE,
6210 .doit = nl80211_get_power_save,
6211 .policy = nl80211_policy,
6212 /* can be retrieved by unprivileged users */
6213 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6214 NL80211_FLAG_NEED_RTNL,
6215 },
6216 {
6217 .cmd = NL80211_CMD_SET_CQM,
6218 .doit = nl80211_set_cqm,
6219 .policy = nl80211_policy,
6220 .flags = GENL_ADMIN_PERM,
6221 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6222 NL80211_FLAG_NEED_RTNL,
6223 },
6224 {
6225 .cmd = NL80211_CMD_SET_CHANNEL,
6226 .doit = nl80211_set_channel,
6227 .policy = nl80211_policy,
6228 .flags = GENL_ADMIN_PERM,
6229 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6230 NL80211_FLAG_NEED_RTNL,
6231 },
6232 {
6233 .cmd = NL80211_CMD_SET_WDS_PEER,
6234 .doit = nl80211_set_wds_peer,
6235 .policy = nl80211_policy,
6236 .flags = GENL_ADMIN_PERM,
6237 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6238 NL80211_FLAG_NEED_RTNL,
6239 },
6240 {
6241 .cmd = NL80211_CMD_JOIN_MESH,
6242 .doit = nl80211_join_mesh,
6243 .policy = nl80211_policy,
6244 .flags = GENL_ADMIN_PERM,
6245 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6246 NL80211_FLAG_NEED_RTNL,
6247 },
6248 {
6249 .cmd = NL80211_CMD_LEAVE_MESH,
6250 .doit = nl80211_leave_mesh,
6251 .policy = nl80211_policy,
6252 .flags = GENL_ADMIN_PERM,
6253 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6254 NL80211_FLAG_NEED_RTNL,
6255 },
6256 {
6257 .cmd = NL80211_CMD_GET_WOWLAN,
6258 .doit = nl80211_get_wowlan,
6259 .policy = nl80211_policy,
6260 /* can be retrieved by unprivileged users */
6261 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6262 NL80211_FLAG_NEED_RTNL,
6263 },
6264 {
6265 .cmd = NL80211_CMD_SET_WOWLAN,
6266 .doit = nl80211_set_wowlan,
6267 .policy = nl80211_policy,
6268 .flags = GENL_ADMIN_PERM,
6269 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6270 NL80211_FLAG_NEED_RTNL,
6271 },
6272 {
6273 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6274 .doit = nl80211_set_rekey_data,
6275 .policy = nl80211_policy,
6276 .flags = GENL_ADMIN_PERM,
6277 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6278 NL80211_FLAG_NEED_RTNL,
6279 },
6280 };
6281
6282 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6283 .name = "mlme",
6284 };
6285
6286 /* multicast groups */
6287 static struct genl_multicast_group nl80211_config_mcgrp = {
6288 .name = "config",
6289 };
6290 static struct genl_multicast_group nl80211_scan_mcgrp = {
6291 .name = "scan",
6292 };
6293 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6294 .name = "regulatory",
6295 };
6296
6297 /* notification functions */
6298
6299 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6300 {
6301 struct sk_buff *msg;
6302
6303 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6304 if (!msg)
6305 return;
6306
6307 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6308 nlmsg_free(msg);
6309 return;
6310 }
6311
6312 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6313 nl80211_config_mcgrp.id, GFP_KERNEL);
6314 }
6315
6316 static int nl80211_add_scan_req(struct sk_buff *msg,
6317 struct cfg80211_registered_device *rdev)
6318 {
6319 struct cfg80211_scan_request *req = rdev->scan_req;
6320 struct nlattr *nest;
6321 int i;
6322
6323 ASSERT_RDEV_LOCK(rdev);
6324
6325 if (WARN_ON(!req))
6326 return 0;
6327
6328 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6329 if (!nest)
6330 goto nla_put_failure;
6331 for (i = 0; i < req->n_ssids; i++)
6332 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6333 nla_nest_end(msg, nest);
6334
6335 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6336 if (!nest)
6337 goto nla_put_failure;
6338 for (i = 0; i < req->n_channels; i++)
6339 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6340 nla_nest_end(msg, nest);
6341
6342 if (req->ie)
6343 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6344
6345 return 0;
6346 nla_put_failure:
6347 return -ENOBUFS;
6348 }
6349
6350 static int nl80211_send_scan_msg(struct sk_buff *msg,
6351 struct cfg80211_registered_device *rdev,
6352 struct net_device *netdev,
6353 u32 pid, u32 seq, int flags,
6354 u32 cmd)
6355 {
6356 void *hdr;
6357
6358 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6359 if (!hdr)
6360 return -1;
6361
6362 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6363 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6364
6365 /* ignore errors and send incomplete event anyway */
6366 nl80211_add_scan_req(msg, rdev);
6367
6368 return genlmsg_end(msg, hdr);
6369
6370 nla_put_failure:
6371 genlmsg_cancel(msg, hdr);
6372 return -EMSGSIZE;
6373 }
6374
6375 static int
6376 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6377 struct cfg80211_registered_device *rdev,
6378 struct net_device *netdev,
6379 u32 pid, u32 seq, int flags, u32 cmd)
6380 {
6381 void *hdr;
6382
6383 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6384 if (!hdr)
6385 return -1;
6386
6387 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6388 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6389
6390 return genlmsg_end(msg, hdr);
6391
6392 nla_put_failure:
6393 genlmsg_cancel(msg, hdr);
6394 return -EMSGSIZE;
6395 }
6396
6397 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6398 struct net_device *netdev)
6399 {
6400 struct sk_buff *msg;
6401
6402 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6403 if (!msg)
6404 return;
6405
6406 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6407 NL80211_CMD_TRIGGER_SCAN) < 0) {
6408 nlmsg_free(msg);
6409 return;
6410 }
6411
6412 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6413 nl80211_scan_mcgrp.id, GFP_KERNEL);
6414 }
6415
6416 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
6417 struct net_device *netdev)
6418 {
6419 struct sk_buff *msg;
6420
6421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6422 if (!msg)
6423 return;
6424
6425 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6426 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
6427 nlmsg_free(msg);
6428 return;
6429 }
6430
6431 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6432 nl80211_scan_mcgrp.id, GFP_KERNEL);
6433 }
6434
6435 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
6436 struct net_device *netdev)
6437 {
6438 struct sk_buff *msg;
6439
6440 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6441 if (!msg)
6442 return;
6443
6444 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6445 NL80211_CMD_SCAN_ABORTED) < 0) {
6446 nlmsg_free(msg);
6447 return;
6448 }
6449
6450 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6451 nl80211_scan_mcgrp.id, GFP_KERNEL);
6452 }
6453
6454 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
6455 struct net_device *netdev)
6456 {
6457 struct sk_buff *msg;
6458
6459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6460 if (!msg)
6461 return;
6462
6463 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
6464 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
6465 nlmsg_free(msg);
6466 return;
6467 }
6468
6469 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6470 nl80211_scan_mcgrp.id, GFP_KERNEL);
6471 }
6472
6473 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
6474 struct net_device *netdev, u32 cmd)
6475 {
6476 struct sk_buff *msg;
6477
6478 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6479 if (!msg)
6480 return;
6481
6482 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
6483 nlmsg_free(msg);
6484 return;
6485 }
6486
6487 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6488 nl80211_scan_mcgrp.id, GFP_KERNEL);
6489 }
6490
6491 /*
6492 * This can happen on global regulatory changes or device specific settings
6493 * based on custom world regulatory domains.
6494 */
6495 void nl80211_send_reg_change_event(struct regulatory_request *request)
6496 {
6497 struct sk_buff *msg;
6498 void *hdr;
6499
6500 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6501 if (!msg)
6502 return;
6503
6504 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
6505 if (!hdr) {
6506 nlmsg_free(msg);
6507 return;
6508 }
6509
6510 /* Userspace can always count this one always being set */
6511 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
6512
6513 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
6514 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6515 NL80211_REGDOM_TYPE_WORLD);
6516 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
6517 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6518 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
6519 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
6520 request->intersect)
6521 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6522 NL80211_REGDOM_TYPE_INTERSECTION);
6523 else {
6524 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
6525 NL80211_REGDOM_TYPE_COUNTRY);
6526 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
6527 }
6528
6529 if (wiphy_idx_valid(request->wiphy_idx))
6530 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
6531
6532 if (genlmsg_end(msg, hdr) < 0) {
6533 nlmsg_free(msg);
6534 return;
6535 }
6536
6537 rcu_read_lock();
6538 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6539 GFP_ATOMIC);
6540 rcu_read_unlock();
6541
6542 return;
6543
6544 nla_put_failure:
6545 genlmsg_cancel(msg, hdr);
6546 nlmsg_free(msg);
6547 }
6548
6549 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
6550 struct net_device *netdev,
6551 const u8 *buf, size_t len,
6552 enum nl80211_commands cmd, gfp_t gfp)
6553 {
6554 struct sk_buff *msg;
6555 void *hdr;
6556
6557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6558 if (!msg)
6559 return;
6560
6561 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6562 if (!hdr) {
6563 nlmsg_free(msg);
6564 return;
6565 }
6566
6567 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6568 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6569 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
6570
6571 if (genlmsg_end(msg, hdr) < 0) {
6572 nlmsg_free(msg);
6573 return;
6574 }
6575
6576 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6577 nl80211_mlme_mcgrp.id, gfp);
6578 return;
6579
6580 nla_put_failure:
6581 genlmsg_cancel(msg, hdr);
6582 nlmsg_free(msg);
6583 }
6584
6585 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
6586 struct net_device *netdev, const u8 *buf,
6587 size_t len, gfp_t gfp)
6588 {
6589 nl80211_send_mlme_event(rdev, netdev, buf, len,
6590 NL80211_CMD_AUTHENTICATE, gfp);
6591 }
6592
6593 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
6594 struct net_device *netdev, const u8 *buf,
6595 size_t len, gfp_t gfp)
6596 {
6597 nl80211_send_mlme_event(rdev, netdev, buf, len,
6598 NL80211_CMD_ASSOCIATE, gfp);
6599 }
6600
6601 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
6602 struct net_device *netdev, const u8 *buf,
6603 size_t len, gfp_t gfp)
6604 {
6605 nl80211_send_mlme_event(rdev, netdev, buf, len,
6606 NL80211_CMD_DEAUTHENTICATE, gfp);
6607 }
6608
6609 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
6610 struct net_device *netdev, const u8 *buf,
6611 size_t len, gfp_t gfp)
6612 {
6613 nl80211_send_mlme_event(rdev, netdev, buf, len,
6614 NL80211_CMD_DISASSOCIATE, gfp);
6615 }
6616
6617 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
6618 struct net_device *netdev, const u8 *buf,
6619 size_t len, gfp_t gfp)
6620 {
6621 nl80211_send_mlme_event(rdev, netdev, buf, len,
6622 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
6623 }
6624
6625 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
6626 struct net_device *netdev, const u8 *buf,
6627 size_t len, gfp_t gfp)
6628 {
6629 nl80211_send_mlme_event(rdev, netdev, buf, len,
6630 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
6631 }
6632
6633 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
6634 struct net_device *netdev, int cmd,
6635 const u8 *addr, gfp_t gfp)
6636 {
6637 struct sk_buff *msg;
6638 void *hdr;
6639
6640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6641 if (!msg)
6642 return;
6643
6644 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6645 if (!hdr) {
6646 nlmsg_free(msg);
6647 return;
6648 }
6649
6650 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6651 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6652 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
6653 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6654
6655 if (genlmsg_end(msg, hdr) < 0) {
6656 nlmsg_free(msg);
6657 return;
6658 }
6659
6660 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6661 nl80211_mlme_mcgrp.id, gfp);
6662 return;
6663
6664 nla_put_failure:
6665 genlmsg_cancel(msg, hdr);
6666 nlmsg_free(msg);
6667 }
6668
6669 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
6670 struct net_device *netdev, const u8 *addr,
6671 gfp_t gfp)
6672 {
6673 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
6674 addr, gfp);
6675 }
6676
6677 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
6678 struct net_device *netdev, const u8 *addr,
6679 gfp_t gfp)
6680 {
6681 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
6682 addr, gfp);
6683 }
6684
6685 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
6686 struct net_device *netdev, const u8 *bssid,
6687 const u8 *req_ie, size_t req_ie_len,
6688 const u8 *resp_ie, size_t resp_ie_len,
6689 u16 status, gfp_t gfp)
6690 {
6691 struct sk_buff *msg;
6692 void *hdr;
6693
6694 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6695 if (!msg)
6696 return;
6697
6698 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
6699 if (!hdr) {
6700 nlmsg_free(msg);
6701 return;
6702 }
6703
6704 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6705 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6706 if (bssid)
6707 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6708 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
6709 if (req_ie)
6710 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6711 if (resp_ie)
6712 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6713
6714 if (genlmsg_end(msg, hdr) < 0) {
6715 nlmsg_free(msg);
6716 return;
6717 }
6718
6719 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6720 nl80211_mlme_mcgrp.id, gfp);
6721 return;
6722
6723 nla_put_failure:
6724 genlmsg_cancel(msg, hdr);
6725 nlmsg_free(msg);
6726
6727 }
6728
6729 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
6730 struct net_device *netdev, const u8 *bssid,
6731 const u8 *req_ie, size_t req_ie_len,
6732 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
6733 {
6734 struct sk_buff *msg;
6735 void *hdr;
6736
6737 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
6738 if (!msg)
6739 return;
6740
6741 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
6742 if (!hdr) {
6743 nlmsg_free(msg);
6744 return;
6745 }
6746
6747 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6748 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6749 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6750 if (req_ie)
6751 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
6752 if (resp_ie)
6753 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
6754
6755 if (genlmsg_end(msg, hdr) < 0) {
6756 nlmsg_free(msg);
6757 return;
6758 }
6759
6760 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6761 nl80211_mlme_mcgrp.id, gfp);
6762 return;
6763
6764 nla_put_failure:
6765 genlmsg_cancel(msg, hdr);
6766 nlmsg_free(msg);
6767
6768 }
6769
6770 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
6771 struct net_device *netdev, u16 reason,
6772 const u8 *ie, size_t ie_len, bool from_ap)
6773 {
6774 struct sk_buff *msg;
6775 void *hdr;
6776
6777 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6778 if (!msg)
6779 return;
6780
6781 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
6782 if (!hdr) {
6783 nlmsg_free(msg);
6784 return;
6785 }
6786
6787 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6788 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6789 if (from_ap && reason)
6790 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
6791 if (from_ap)
6792 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
6793 if (ie)
6794 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
6795
6796 if (genlmsg_end(msg, hdr) < 0) {
6797 nlmsg_free(msg);
6798 return;
6799 }
6800
6801 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6802 nl80211_mlme_mcgrp.id, GFP_KERNEL);
6803 return;
6804
6805 nla_put_failure:
6806 genlmsg_cancel(msg, hdr);
6807 nlmsg_free(msg);
6808
6809 }
6810
6811 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
6812 struct net_device *netdev, const u8 *bssid,
6813 gfp_t gfp)
6814 {
6815 struct sk_buff *msg;
6816 void *hdr;
6817
6818 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6819 if (!msg)
6820 return;
6821
6822 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
6823 if (!hdr) {
6824 nlmsg_free(msg);
6825 return;
6826 }
6827
6828 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6829 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6830 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
6831
6832 if (genlmsg_end(msg, hdr) < 0) {
6833 nlmsg_free(msg);
6834 return;
6835 }
6836
6837 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6838 nl80211_mlme_mcgrp.id, gfp);
6839 return;
6840
6841 nla_put_failure:
6842 genlmsg_cancel(msg, hdr);
6843 nlmsg_free(msg);
6844 }
6845
6846 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
6847 struct net_device *netdev,
6848 const u8 *macaddr, const u8* ie, u8 ie_len,
6849 gfp_t gfp)
6850 {
6851 struct sk_buff *msg;
6852 void *hdr;
6853
6854 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6855 if (!msg)
6856 return;
6857
6858 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
6859 if (!hdr) {
6860 nlmsg_free(msg);
6861 return;
6862 }
6863
6864 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6865 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6866 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
6867 if (ie_len && ie)
6868 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
6869
6870 if (genlmsg_end(msg, hdr) < 0) {
6871 nlmsg_free(msg);
6872 return;
6873 }
6874
6875 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6876 nl80211_mlme_mcgrp.id, gfp);
6877 return;
6878
6879 nla_put_failure:
6880 genlmsg_cancel(msg, hdr);
6881 nlmsg_free(msg);
6882 }
6883
6884 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
6885 struct net_device *netdev, const u8 *addr,
6886 enum nl80211_key_type key_type, int key_id,
6887 const u8 *tsc, gfp_t gfp)
6888 {
6889 struct sk_buff *msg;
6890 void *hdr;
6891
6892 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6893 if (!msg)
6894 return;
6895
6896 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
6897 if (!hdr) {
6898 nlmsg_free(msg);
6899 return;
6900 }
6901
6902 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6903 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6904 if (addr)
6905 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6906 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
6907 if (key_id != -1)
6908 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
6909 if (tsc)
6910 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
6911
6912 if (genlmsg_end(msg, hdr) < 0) {
6913 nlmsg_free(msg);
6914 return;
6915 }
6916
6917 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6918 nl80211_mlme_mcgrp.id, gfp);
6919 return;
6920
6921 nla_put_failure:
6922 genlmsg_cancel(msg, hdr);
6923 nlmsg_free(msg);
6924 }
6925
6926 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
6927 struct ieee80211_channel *channel_before,
6928 struct ieee80211_channel *channel_after)
6929 {
6930 struct sk_buff *msg;
6931 void *hdr;
6932 struct nlattr *nl_freq;
6933
6934 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
6935 if (!msg)
6936 return;
6937
6938 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
6939 if (!hdr) {
6940 nlmsg_free(msg);
6941 return;
6942 }
6943
6944 /*
6945 * Since we are applying the beacon hint to a wiphy we know its
6946 * wiphy_idx is valid
6947 */
6948 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
6949
6950 /* Before */
6951 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
6952 if (!nl_freq)
6953 goto nla_put_failure;
6954 if (nl80211_msg_put_channel(msg, channel_before))
6955 goto nla_put_failure;
6956 nla_nest_end(msg, nl_freq);
6957
6958 /* After */
6959 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
6960 if (!nl_freq)
6961 goto nla_put_failure;
6962 if (nl80211_msg_put_channel(msg, channel_after))
6963 goto nla_put_failure;
6964 nla_nest_end(msg, nl_freq);
6965
6966 if (genlmsg_end(msg, hdr) < 0) {
6967 nlmsg_free(msg);
6968 return;
6969 }
6970
6971 rcu_read_lock();
6972 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
6973 GFP_ATOMIC);
6974 rcu_read_unlock();
6975
6976 return;
6977
6978 nla_put_failure:
6979 genlmsg_cancel(msg, hdr);
6980 nlmsg_free(msg);
6981 }
6982
6983 static void nl80211_send_remain_on_chan_event(
6984 int cmd, struct cfg80211_registered_device *rdev,
6985 struct net_device *netdev, u64 cookie,
6986 struct ieee80211_channel *chan,
6987 enum nl80211_channel_type channel_type,
6988 unsigned int duration, gfp_t gfp)
6989 {
6990 struct sk_buff *msg;
6991 void *hdr;
6992
6993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
6994 if (!msg)
6995 return;
6996
6997 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
6998 if (!hdr) {
6999 nlmsg_free(msg);
7000 return;
7001 }
7002
7003 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7004 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7005 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7006 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7007 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7008
7009 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7010 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7011
7012 if (genlmsg_end(msg, hdr) < 0) {
7013 nlmsg_free(msg);
7014 return;
7015 }
7016
7017 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7018 nl80211_mlme_mcgrp.id, gfp);
7019 return;
7020
7021 nla_put_failure:
7022 genlmsg_cancel(msg, hdr);
7023 nlmsg_free(msg);
7024 }
7025
7026 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7027 struct net_device *netdev, u64 cookie,
7028 struct ieee80211_channel *chan,
7029 enum nl80211_channel_type channel_type,
7030 unsigned int duration, gfp_t gfp)
7031 {
7032 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7033 rdev, netdev, cookie, chan,
7034 channel_type, duration, gfp);
7035 }
7036
7037 void nl80211_send_remain_on_channel_cancel(
7038 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7039 u64 cookie, struct ieee80211_channel *chan,
7040 enum nl80211_channel_type channel_type, gfp_t gfp)
7041 {
7042 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7043 rdev, netdev, cookie, chan,
7044 channel_type, 0, gfp);
7045 }
7046
7047 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7048 struct net_device *dev, const u8 *mac_addr,
7049 struct station_info *sinfo, gfp_t gfp)
7050 {
7051 struct sk_buff *msg;
7052
7053 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7054 if (!msg)
7055 return;
7056
7057 if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
7058 nlmsg_free(msg);
7059 return;
7060 }
7061
7062 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7063 nl80211_mlme_mcgrp.id, gfp);
7064 }
7065
7066 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7067 struct net_device *dev, const u8 *mac_addr,
7068 gfp_t gfp)
7069 {
7070 struct sk_buff *msg;
7071 void *hdr;
7072
7073 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7074 if (!msg)
7075 return;
7076
7077 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7078 if (!hdr) {
7079 nlmsg_free(msg);
7080 return;
7081 }
7082
7083 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7084 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7085
7086 if (genlmsg_end(msg, hdr) < 0) {
7087 nlmsg_free(msg);
7088 return;
7089 }
7090
7091 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7092 nl80211_mlme_mcgrp.id, gfp);
7093 return;
7094
7095 nla_put_failure:
7096 genlmsg_cancel(msg, hdr);
7097 nlmsg_free(msg);
7098 }
7099
7100 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7101 struct net_device *netdev, u32 nlpid,
7102 int freq, const u8 *buf, size_t len, gfp_t gfp)
7103 {
7104 struct sk_buff *msg;
7105 void *hdr;
7106 int err;
7107
7108 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7109 if (!msg)
7110 return -ENOMEM;
7111
7112 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7113 if (!hdr) {
7114 nlmsg_free(msg);
7115 return -ENOMEM;
7116 }
7117
7118 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7119 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7120 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7121 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7122
7123 err = genlmsg_end(msg, hdr);
7124 if (err < 0) {
7125 nlmsg_free(msg);
7126 return err;
7127 }
7128
7129 err = genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7130 if (err < 0)
7131 return err;
7132 return 0;
7133
7134 nla_put_failure:
7135 genlmsg_cancel(msg, hdr);
7136 nlmsg_free(msg);
7137 return -ENOBUFS;
7138 }
7139
7140 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7141 struct net_device *netdev, u64 cookie,
7142 const u8 *buf, size_t len, bool ack,
7143 gfp_t gfp)
7144 {
7145 struct sk_buff *msg;
7146 void *hdr;
7147
7148 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7149 if (!msg)
7150 return;
7151
7152 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7153 if (!hdr) {
7154 nlmsg_free(msg);
7155 return;
7156 }
7157
7158 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7159 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7160 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7161 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7162 if (ack)
7163 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7164
7165 if (genlmsg_end(msg, hdr) < 0) {
7166 nlmsg_free(msg);
7167 return;
7168 }
7169
7170 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7171 return;
7172
7173 nla_put_failure:
7174 genlmsg_cancel(msg, hdr);
7175 nlmsg_free(msg);
7176 }
7177
7178 void
7179 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7180 struct net_device *netdev,
7181 enum nl80211_cqm_rssi_threshold_event rssi_event,
7182 gfp_t gfp)
7183 {
7184 struct sk_buff *msg;
7185 struct nlattr *pinfoattr;
7186 void *hdr;
7187
7188 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7189 if (!msg)
7190 return;
7191
7192 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7193 if (!hdr) {
7194 nlmsg_free(msg);
7195 return;
7196 }
7197
7198 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7199 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7200
7201 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7202 if (!pinfoattr)
7203 goto nla_put_failure;
7204
7205 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7206 rssi_event);
7207
7208 nla_nest_end(msg, pinfoattr);
7209
7210 if (genlmsg_end(msg, hdr) < 0) {
7211 nlmsg_free(msg);
7212 return;
7213 }
7214
7215 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7216 nl80211_mlme_mcgrp.id, gfp);
7217 return;
7218
7219 nla_put_failure:
7220 genlmsg_cancel(msg, hdr);
7221 nlmsg_free(msg);
7222 }
7223
7224 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7225 struct net_device *netdev, const u8 *bssid,
7226 const u8 *replay_ctr, gfp_t gfp)
7227 {
7228 struct sk_buff *msg;
7229 struct nlattr *rekey_attr;
7230 void *hdr;
7231
7232 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7233 if (!msg)
7234 return;
7235
7236 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7237 if (!hdr) {
7238 nlmsg_free(msg);
7239 return;
7240 }
7241
7242 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7243 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7244 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7245
7246 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7247 if (!rekey_attr)
7248 goto nla_put_failure;
7249
7250 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7251 NL80211_REPLAY_CTR_LEN, replay_ctr);
7252
7253 nla_nest_end(msg, rekey_attr);
7254
7255 if (genlmsg_end(msg, hdr) < 0) {
7256 nlmsg_free(msg);
7257 return;
7258 }
7259
7260 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7261 nl80211_mlme_mcgrp.id, gfp);
7262 return;
7263
7264 nla_put_failure:
7265 genlmsg_cancel(msg, hdr);
7266 nlmsg_free(msg);
7267 }
7268
7269 void
7270 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7271 struct net_device *netdev, const u8 *peer,
7272 u32 num_packets, gfp_t gfp)
7273 {
7274 struct sk_buff *msg;
7275 struct nlattr *pinfoattr;
7276 void *hdr;
7277
7278 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7279 if (!msg)
7280 return;
7281
7282 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7283 if (!hdr) {
7284 nlmsg_free(msg);
7285 return;
7286 }
7287
7288 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7289 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7290 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7291
7292 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7293 if (!pinfoattr)
7294 goto nla_put_failure;
7295
7296 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7297
7298 nla_nest_end(msg, pinfoattr);
7299
7300 if (genlmsg_end(msg, hdr) < 0) {
7301 nlmsg_free(msg);
7302 return;
7303 }
7304
7305 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7306 nl80211_mlme_mcgrp.id, gfp);
7307 return;
7308
7309 nla_put_failure:
7310 genlmsg_cancel(msg, hdr);
7311 nlmsg_free(msg);
7312 }
7313
7314 static int nl80211_netlink_notify(struct notifier_block * nb,
7315 unsigned long state,
7316 void *_notify)
7317 {
7318 struct netlink_notify *notify = _notify;
7319 struct cfg80211_registered_device *rdev;
7320 struct wireless_dev *wdev;
7321
7322 if (state != NETLINK_URELEASE)
7323 return NOTIFY_DONE;
7324
7325 rcu_read_lock();
7326
7327 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list)
7328 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
7329 cfg80211_mlme_unregister_socket(wdev, notify->pid);
7330
7331 rcu_read_unlock();
7332
7333 return NOTIFY_DONE;
7334 }
7335
7336 static struct notifier_block nl80211_netlink_notifier = {
7337 .notifier_call = nl80211_netlink_notify,
7338 };
7339
7340 /* initialisation/exit functions */
7341
7342 int nl80211_init(void)
7343 {
7344 int err;
7345
7346 err = genl_register_family_with_ops(&nl80211_fam,
7347 nl80211_ops, ARRAY_SIZE(nl80211_ops));
7348 if (err)
7349 return err;
7350
7351 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
7352 if (err)
7353 goto err_out;
7354
7355 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
7356 if (err)
7357 goto err_out;
7358
7359 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
7360 if (err)
7361 goto err_out;
7362
7363 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
7364 if (err)
7365 goto err_out;
7366
7367 #ifdef CONFIG_NL80211_TESTMODE
7368 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
7369 if (err)
7370 goto err_out;
7371 #endif
7372
7373 err = netlink_register_notifier(&nl80211_netlink_notifier);
7374 if (err)
7375 goto err_out;
7376
7377 return 0;
7378 err_out:
7379 genl_unregister_family(&nl80211_fam);
7380 return err;
7381 }
7382
7383 void nl80211_exit(void)
7384 {
7385 netlink_unregister_notifier(&nl80211_netlink_notifier);
7386 genl_unregister_family(&nl80211_fam);
7387 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree