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cfg80211/mac80211: enable proper device_set_wakeup_enable handling
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_ifindex(struct net *netns, struct nlattr **attrs,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 int ifindex;
55
56 if (!attrs[NL80211_ATTR_IFINDEX])
57 return -EINVAL;
58
59 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
60 *dev = dev_get_by_index(netns, ifindex);
61 if (!*dev)
62 return -ENODEV;
63
64 *rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
65 if (IS_ERR(*rdev)) {
66 dev_put(*dev);
67 return PTR_ERR(*rdev);
68 }
69
70 return 0;
71 }
72
73 /* policy for the attributes */
74 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
75 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
76 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
77 .len = 20-1 },
78 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
79 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
80 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
81 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
82 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
83 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
84 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
85 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
86
87 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
88 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
89 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
90
91 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
92 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
93
94 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
95 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
96 .len = WLAN_MAX_KEY_LEN },
97 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
98 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
99 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
100 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
101 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
102
103 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
104 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
105 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
106 .len = IEEE80211_MAX_DATA_LEN },
107 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
108 .len = IEEE80211_MAX_DATA_LEN },
109 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
110 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
111 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
112 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
113 .len = NL80211_MAX_SUPP_RATES },
114 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
115 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
116 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
117 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
118 .len = IEEE80211_MAX_MESH_ID_LEN },
119 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
120
121 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
122 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
123
124 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
125 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
126 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
127 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
128 .len = NL80211_MAX_SUPP_RATES },
129 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
130
131 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
132 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
133
134 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
135
136 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
137 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
138 .len = IEEE80211_MAX_DATA_LEN },
139 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
140 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
141
142 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
143 .len = IEEE80211_MAX_SSID_LEN },
144 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
145 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
146 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
147 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
148 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
149 [NL80211_ATTR_STA_FLAGS2] = {
150 .len = sizeof(struct nl80211_sta_flag_update),
151 },
152 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
153 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
154 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
155 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
156 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
157 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
158 [NL80211_ATTR_PID] = { .type = NLA_U32 },
159 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
160 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
161 .len = WLAN_PMKID_LEN },
162 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
163 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
164 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
165 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
166 .len = IEEE80211_MAX_DATA_LEN },
167 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
168 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
169 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
170 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
171 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
172 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
173 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
174 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
175 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
176 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
177 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
178 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
179 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
180 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
181 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
182 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
183 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
184 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
185 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
186 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
187 .len = IEEE80211_MAX_DATA_LEN },
188 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
189 .len = IEEE80211_MAX_DATA_LEN },
190 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
191 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
192 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
193 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
194 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
195 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
196 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
197 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
198 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
199 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
200 .len = IEEE80211_MAX_DATA_LEN },
201 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
202 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
203 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
204 .len = NL80211_HT_CAPABILITY_LEN
205 },
206 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
207 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
208 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
209 };
210
211 /* policy for the key attributes */
212 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
213 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
214 [NL80211_KEY_IDX] = { .type = NLA_U8 },
215 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
216 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
217 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
218 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
219 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
220 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
221 };
222
223 /* policy for the key default flags */
224 static const struct nla_policy
225 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
226 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
227 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
228 };
229
230 /* policy for WoWLAN attributes */
231 static const struct nla_policy
232 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
233 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
234 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
235 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
236 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
237 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
238 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
239 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
240 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
241 };
242
243 /* policy for GTK rekey offload attributes */
244 static const struct nla_policy
245 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
246 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
247 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
248 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
249 };
250
251 static const struct nla_policy
252 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
253 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_SSID_LEN },
255 };
256
257 /* ifidx get helper */
258 static int nl80211_get_ifidx(struct netlink_callback *cb)
259 {
260 int res;
261
262 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
263 nl80211_fam.attrbuf, nl80211_fam.maxattr,
264 nl80211_policy);
265 if (res)
266 return res;
267
268 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
269 return -EINVAL;
270
271 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
272 if (!res)
273 return -EINVAL;
274 return res;
275 }
276
277 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
278 struct netlink_callback *cb,
279 struct cfg80211_registered_device **rdev,
280 struct net_device **dev)
281 {
282 int ifidx = cb->args[0];
283 int err;
284
285 if (!ifidx)
286 ifidx = nl80211_get_ifidx(cb);
287 if (ifidx < 0)
288 return ifidx;
289
290 cb->args[0] = ifidx;
291
292 rtnl_lock();
293
294 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
295 if (!*dev) {
296 err = -ENODEV;
297 goto out_rtnl;
298 }
299
300 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
301 if (IS_ERR(*rdev)) {
302 err = PTR_ERR(*rdev);
303 goto out_rtnl;
304 }
305
306 return 0;
307 out_rtnl:
308 rtnl_unlock();
309 return err;
310 }
311
312 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
313 {
314 cfg80211_unlock_rdev(rdev);
315 rtnl_unlock();
316 }
317
318 /* IE validation */
319 static bool is_valid_ie_attr(const struct nlattr *attr)
320 {
321 const u8 *pos;
322 int len;
323
324 if (!attr)
325 return true;
326
327 pos = nla_data(attr);
328 len = nla_len(attr);
329
330 while (len) {
331 u8 elemlen;
332
333 if (len < 2)
334 return false;
335 len -= 2;
336
337 elemlen = pos[1];
338 if (elemlen > len)
339 return false;
340
341 len -= elemlen;
342 pos += 2 + elemlen;
343 }
344
345 return true;
346 }
347
348 /* message building helper */
349 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
350 int flags, u8 cmd)
351 {
352 /* since there is no private header just add the generic one */
353 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
354 }
355
356 static int nl80211_msg_put_channel(struct sk_buff *msg,
357 struct ieee80211_channel *chan)
358 {
359 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
360 chan->center_freq);
361
362 if (chan->flags & IEEE80211_CHAN_DISABLED)
363 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
364 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
365 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
366 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
367 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
368 if (chan->flags & IEEE80211_CHAN_RADAR)
369 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
370
371 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
372 DBM_TO_MBM(chan->max_power));
373
374 return 0;
375
376 nla_put_failure:
377 return -ENOBUFS;
378 }
379
380 /* netlink command implementations */
381
382 struct key_parse {
383 struct key_params p;
384 int idx;
385 int type;
386 bool def, defmgmt;
387 bool def_uni, def_multi;
388 };
389
390 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
391 {
392 struct nlattr *tb[NL80211_KEY_MAX + 1];
393 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
394 nl80211_key_policy);
395 if (err)
396 return err;
397
398 k->def = !!tb[NL80211_KEY_DEFAULT];
399 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
400
401 if (k->def) {
402 k->def_uni = true;
403 k->def_multi = true;
404 }
405 if (k->defmgmt)
406 k->def_multi = true;
407
408 if (tb[NL80211_KEY_IDX])
409 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
410
411 if (tb[NL80211_KEY_DATA]) {
412 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
413 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
414 }
415
416 if (tb[NL80211_KEY_SEQ]) {
417 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
418 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
419 }
420
421 if (tb[NL80211_KEY_CIPHER])
422 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
423
424 if (tb[NL80211_KEY_TYPE]) {
425 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
426 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
427 return -EINVAL;
428 }
429
430 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
431 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
432 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
433 tb[NL80211_KEY_DEFAULT_TYPES],
434 nl80211_key_default_policy);
435 if (err)
436 return err;
437
438 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
439 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
440 }
441
442 return 0;
443 }
444
445 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
446 {
447 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
448 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
449 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
450 }
451
452 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
453 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
454 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
455 }
456
457 if (info->attrs[NL80211_ATTR_KEY_IDX])
458 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
459
460 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
461 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
462
463 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
464 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
465
466 if (k->def) {
467 k->def_uni = true;
468 k->def_multi = true;
469 }
470 if (k->defmgmt)
471 k->def_multi = true;
472
473 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
474 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
475 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
476 return -EINVAL;
477 }
478
479 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
480 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
481 int err = nla_parse_nested(
482 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
483 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
484 nl80211_key_default_policy);
485 if (err)
486 return err;
487
488 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
489 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
490 }
491
492 return 0;
493 }
494
495 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
496 {
497 int err;
498
499 memset(k, 0, sizeof(*k));
500 k->idx = -1;
501 k->type = -1;
502
503 if (info->attrs[NL80211_ATTR_KEY])
504 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
505 else
506 err = nl80211_parse_key_old(info, k);
507
508 if (err)
509 return err;
510
511 if (k->def && k->defmgmt)
512 return -EINVAL;
513
514 if (k->defmgmt) {
515 if (k->def_uni || !k->def_multi)
516 return -EINVAL;
517 }
518
519 if (k->idx != -1) {
520 if (k->defmgmt) {
521 if (k->idx < 4 || k->idx > 5)
522 return -EINVAL;
523 } else if (k->def) {
524 if (k->idx < 0 || k->idx > 3)
525 return -EINVAL;
526 } else {
527 if (k->idx < 0 || k->idx > 5)
528 return -EINVAL;
529 }
530 }
531
532 return 0;
533 }
534
535 static struct cfg80211_cached_keys *
536 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
537 struct nlattr *keys)
538 {
539 struct key_parse parse;
540 struct nlattr *key;
541 struct cfg80211_cached_keys *result;
542 int rem, err, def = 0;
543
544 result = kzalloc(sizeof(*result), GFP_KERNEL);
545 if (!result)
546 return ERR_PTR(-ENOMEM);
547
548 result->def = -1;
549 result->defmgmt = -1;
550
551 nla_for_each_nested(key, keys, rem) {
552 memset(&parse, 0, sizeof(parse));
553 parse.idx = -1;
554
555 err = nl80211_parse_key_new(key, &parse);
556 if (err)
557 goto error;
558 err = -EINVAL;
559 if (!parse.p.key)
560 goto error;
561 if (parse.idx < 0 || parse.idx > 4)
562 goto error;
563 if (parse.def) {
564 if (def)
565 goto error;
566 def = 1;
567 result->def = parse.idx;
568 if (!parse.def_uni || !parse.def_multi)
569 goto error;
570 } else if (parse.defmgmt)
571 goto error;
572 err = cfg80211_validate_key_settings(rdev, &parse.p,
573 parse.idx, false, NULL);
574 if (err)
575 goto error;
576 result->params[parse.idx].cipher = parse.p.cipher;
577 result->params[parse.idx].key_len = parse.p.key_len;
578 result->params[parse.idx].key = result->data[parse.idx];
579 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
580 }
581
582 return result;
583 error:
584 kfree(result);
585 return ERR_PTR(err);
586 }
587
588 static int nl80211_key_allowed(struct wireless_dev *wdev)
589 {
590 ASSERT_WDEV_LOCK(wdev);
591
592 switch (wdev->iftype) {
593 case NL80211_IFTYPE_AP:
594 case NL80211_IFTYPE_AP_VLAN:
595 case NL80211_IFTYPE_P2P_GO:
596 case NL80211_IFTYPE_MESH_POINT:
597 break;
598 case NL80211_IFTYPE_ADHOC:
599 if (!wdev->current_bss)
600 return -ENOLINK;
601 break;
602 case NL80211_IFTYPE_STATION:
603 case NL80211_IFTYPE_P2P_CLIENT:
604 if (wdev->sme_state != CFG80211_SME_CONNECTED)
605 return -ENOLINK;
606 break;
607 default:
608 return -EINVAL;
609 }
610
611 return 0;
612 }
613
614 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
615 {
616 struct nlattr *nl_modes = nla_nest_start(msg, attr);
617 int i;
618
619 if (!nl_modes)
620 goto nla_put_failure;
621
622 i = 0;
623 while (ifmodes) {
624 if (ifmodes & 1)
625 NLA_PUT_FLAG(msg, i);
626 ifmodes >>= 1;
627 i++;
628 }
629
630 nla_nest_end(msg, nl_modes);
631 return 0;
632
633 nla_put_failure:
634 return -ENOBUFS;
635 }
636
637 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
638 struct sk_buff *msg)
639 {
640 struct nlattr *nl_combis;
641 int i, j;
642
643 nl_combis = nla_nest_start(msg,
644 NL80211_ATTR_INTERFACE_COMBINATIONS);
645 if (!nl_combis)
646 goto nla_put_failure;
647
648 for (i = 0; i < wiphy->n_iface_combinations; i++) {
649 const struct ieee80211_iface_combination *c;
650 struct nlattr *nl_combi, *nl_limits;
651
652 c = &wiphy->iface_combinations[i];
653
654 nl_combi = nla_nest_start(msg, i + 1);
655 if (!nl_combi)
656 goto nla_put_failure;
657
658 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
659 if (!nl_limits)
660 goto nla_put_failure;
661
662 for (j = 0; j < c->n_limits; j++) {
663 struct nlattr *nl_limit;
664
665 nl_limit = nla_nest_start(msg, j + 1);
666 if (!nl_limit)
667 goto nla_put_failure;
668 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
669 c->limits[j].max);
670 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
671 c->limits[j].types))
672 goto nla_put_failure;
673 nla_nest_end(msg, nl_limit);
674 }
675
676 nla_nest_end(msg, nl_limits);
677
678 if (c->beacon_int_infra_match)
679 NLA_PUT_FLAG(msg,
680 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
681 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
682 c->num_different_channels);
683 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
684 c->max_interfaces);
685
686 nla_nest_end(msg, nl_combi);
687 }
688
689 nla_nest_end(msg, nl_combis);
690
691 return 0;
692 nla_put_failure:
693 return -ENOBUFS;
694 }
695
696 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
697 struct cfg80211_registered_device *dev)
698 {
699 void *hdr;
700 struct nlattr *nl_bands, *nl_band;
701 struct nlattr *nl_freqs, *nl_freq;
702 struct nlattr *nl_rates, *nl_rate;
703 struct nlattr *nl_cmds;
704 enum ieee80211_band band;
705 struct ieee80211_channel *chan;
706 struct ieee80211_rate *rate;
707 int i;
708 const struct ieee80211_txrx_stypes *mgmt_stypes =
709 dev->wiphy.mgmt_stypes;
710
711 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
712 if (!hdr)
713 return -1;
714
715 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
716 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
717
718 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
719 cfg80211_rdev_list_generation);
720
721 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
722 dev->wiphy.retry_short);
723 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
724 dev->wiphy.retry_long);
725 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
726 dev->wiphy.frag_threshold);
727 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
728 dev->wiphy.rts_threshold);
729 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
730 dev->wiphy.coverage_class);
731 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
732 dev->wiphy.max_scan_ssids);
733 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
734 dev->wiphy.max_sched_scan_ssids);
735 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
736 dev->wiphy.max_scan_ie_len);
737 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
738 dev->wiphy.max_sched_scan_ie_len);
739 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
740 dev->wiphy.max_match_sets);
741
742 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
743 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
744 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
745 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
746 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
747 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
748 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
749 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
750 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
751 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
752 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
753 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
754
755 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
756 sizeof(u32) * dev->wiphy.n_cipher_suites,
757 dev->wiphy.cipher_suites);
758
759 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
760 dev->wiphy.max_num_pmkids);
761
762 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
763 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
764
765 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
766 dev->wiphy.available_antennas_tx);
767 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
768 dev->wiphy.available_antennas_rx);
769
770 if (dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD)
771 NLA_PUT_U32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
772 dev->wiphy.probe_resp_offload);
773
774 if ((dev->wiphy.available_antennas_tx ||
775 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
776 u32 tx_ant = 0, rx_ant = 0;
777 int res;
778 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
779 if (!res) {
780 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
781 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
782 }
783 }
784
785 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
786 dev->wiphy.interface_modes))
787 goto nla_put_failure;
788
789 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
790 if (!nl_bands)
791 goto nla_put_failure;
792
793 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
794 if (!dev->wiphy.bands[band])
795 continue;
796
797 nl_band = nla_nest_start(msg, band);
798 if (!nl_band)
799 goto nla_put_failure;
800
801 /* add HT info */
802 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
803 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
804 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
805 &dev->wiphy.bands[band]->ht_cap.mcs);
806 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
807 dev->wiphy.bands[band]->ht_cap.cap);
808 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
809 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
810 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
811 dev->wiphy.bands[band]->ht_cap.ampdu_density);
812 }
813
814 /* add frequencies */
815 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
816 if (!nl_freqs)
817 goto nla_put_failure;
818
819 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
820 nl_freq = nla_nest_start(msg, i);
821 if (!nl_freq)
822 goto nla_put_failure;
823
824 chan = &dev->wiphy.bands[band]->channels[i];
825
826 if (nl80211_msg_put_channel(msg, chan))
827 goto nla_put_failure;
828
829 nla_nest_end(msg, nl_freq);
830 }
831
832 nla_nest_end(msg, nl_freqs);
833
834 /* add bitrates */
835 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
836 if (!nl_rates)
837 goto nla_put_failure;
838
839 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
840 nl_rate = nla_nest_start(msg, i);
841 if (!nl_rate)
842 goto nla_put_failure;
843
844 rate = &dev->wiphy.bands[band]->bitrates[i];
845 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
846 rate->bitrate);
847 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
848 NLA_PUT_FLAG(msg,
849 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
850
851 nla_nest_end(msg, nl_rate);
852 }
853
854 nla_nest_end(msg, nl_rates);
855
856 nla_nest_end(msg, nl_band);
857 }
858 nla_nest_end(msg, nl_bands);
859
860 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
861 if (!nl_cmds)
862 goto nla_put_failure;
863
864 i = 0;
865 #define CMD(op, n) \
866 do { \
867 if (dev->ops->op) { \
868 i++; \
869 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
870 } \
871 } while (0)
872
873 CMD(add_virtual_intf, NEW_INTERFACE);
874 CMD(change_virtual_intf, SET_INTERFACE);
875 CMD(add_key, NEW_KEY);
876 CMD(start_ap, START_AP);
877 CMD(add_station, NEW_STATION);
878 CMD(add_mpath, NEW_MPATH);
879 CMD(update_mesh_config, SET_MESH_CONFIG);
880 CMD(change_bss, SET_BSS);
881 CMD(auth, AUTHENTICATE);
882 CMD(assoc, ASSOCIATE);
883 CMD(deauth, DEAUTHENTICATE);
884 CMD(disassoc, DISASSOCIATE);
885 CMD(join_ibss, JOIN_IBSS);
886 CMD(join_mesh, JOIN_MESH);
887 CMD(set_pmksa, SET_PMKSA);
888 CMD(del_pmksa, DEL_PMKSA);
889 CMD(flush_pmksa, FLUSH_PMKSA);
890 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
891 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
892 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
893 CMD(mgmt_tx, FRAME);
894 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
895 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
896 i++;
897 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
898 }
899 CMD(set_channel, SET_CHANNEL);
900 CMD(set_wds_peer, SET_WDS_PEER);
901 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
902 CMD(tdls_mgmt, TDLS_MGMT);
903 CMD(tdls_oper, TDLS_OPER);
904 }
905 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
906 CMD(sched_scan_start, START_SCHED_SCAN);
907 CMD(probe_client, PROBE_CLIENT);
908 CMD(set_noack_map, SET_NOACK_MAP);
909 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
910 i++;
911 NLA_PUT_U32(msg, i, NL80211_CMD_REGISTER_BEACONS);
912 }
913
914 #ifdef CONFIG_NL80211_TESTMODE
915 CMD(testmode_cmd, TESTMODE);
916 #endif
917
918 #undef CMD
919
920 if (dev->ops->connect || dev->ops->auth) {
921 i++;
922 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
923 }
924
925 if (dev->ops->disconnect || dev->ops->deauth) {
926 i++;
927 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
928 }
929
930 nla_nest_end(msg, nl_cmds);
931
932 if (dev->ops->remain_on_channel &&
933 dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
934 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
935 dev->wiphy.max_remain_on_channel_duration);
936
937 if (dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)
938 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
939
940 if (mgmt_stypes) {
941 u16 stypes;
942 struct nlattr *nl_ftypes, *nl_ifs;
943 enum nl80211_iftype ift;
944
945 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
946 if (!nl_ifs)
947 goto nla_put_failure;
948
949 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
950 nl_ftypes = nla_nest_start(msg, ift);
951 if (!nl_ftypes)
952 goto nla_put_failure;
953 i = 0;
954 stypes = mgmt_stypes[ift].tx;
955 while (stypes) {
956 if (stypes & 1)
957 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
958 (i << 4) | IEEE80211_FTYPE_MGMT);
959 stypes >>= 1;
960 i++;
961 }
962 nla_nest_end(msg, nl_ftypes);
963 }
964
965 nla_nest_end(msg, nl_ifs);
966
967 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
968 if (!nl_ifs)
969 goto nla_put_failure;
970
971 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
972 nl_ftypes = nla_nest_start(msg, ift);
973 if (!nl_ftypes)
974 goto nla_put_failure;
975 i = 0;
976 stypes = mgmt_stypes[ift].rx;
977 while (stypes) {
978 if (stypes & 1)
979 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
980 (i << 4) | IEEE80211_FTYPE_MGMT);
981 stypes >>= 1;
982 i++;
983 }
984 nla_nest_end(msg, nl_ftypes);
985 }
986 nla_nest_end(msg, nl_ifs);
987 }
988
989 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
990 struct nlattr *nl_wowlan;
991
992 nl_wowlan = nla_nest_start(msg,
993 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
994 if (!nl_wowlan)
995 goto nla_put_failure;
996
997 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
998 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
999 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
1000 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
1001 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
1002 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
1003 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
1004 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
1005 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
1006 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
1007 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
1008 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
1009 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
1010 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
1011 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
1012 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
1013 if (dev->wiphy.wowlan.n_patterns) {
1014 struct nl80211_wowlan_pattern_support pat = {
1015 .max_patterns = dev->wiphy.wowlan.n_patterns,
1016 .min_pattern_len =
1017 dev->wiphy.wowlan.pattern_min_len,
1018 .max_pattern_len =
1019 dev->wiphy.wowlan.pattern_max_len,
1020 };
1021 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1022 sizeof(pat), &pat);
1023 }
1024
1025 nla_nest_end(msg, nl_wowlan);
1026 }
1027
1028 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1029 dev->wiphy.software_iftypes))
1030 goto nla_put_failure;
1031
1032 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1033 goto nla_put_failure;
1034
1035 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME)
1036 NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_SME,
1037 dev->wiphy.ap_sme_capa);
1038
1039 NLA_PUT_U32(msg, NL80211_ATTR_FEATURE_FLAGS, dev->wiphy.features);
1040
1041 if (dev->wiphy.ht_capa_mod_mask)
1042 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1043 sizeof(*dev->wiphy.ht_capa_mod_mask),
1044 dev->wiphy.ht_capa_mod_mask);
1045
1046 return genlmsg_end(msg, hdr);
1047
1048 nla_put_failure:
1049 genlmsg_cancel(msg, hdr);
1050 return -EMSGSIZE;
1051 }
1052
1053 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1054 {
1055 int idx = 0;
1056 int start = cb->args[0];
1057 struct cfg80211_registered_device *dev;
1058
1059 mutex_lock(&cfg80211_mutex);
1060 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1061 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1062 continue;
1063 if (++idx <= start)
1064 continue;
1065 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1066 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1067 dev) < 0) {
1068 idx--;
1069 break;
1070 }
1071 }
1072 mutex_unlock(&cfg80211_mutex);
1073
1074 cb->args[0] = idx;
1075
1076 return skb->len;
1077 }
1078
1079 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1080 {
1081 struct sk_buff *msg;
1082 struct cfg80211_registered_device *dev = info->user_ptr[0];
1083
1084 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1085 if (!msg)
1086 return -ENOMEM;
1087
1088 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1089 nlmsg_free(msg);
1090 return -ENOBUFS;
1091 }
1092
1093 return genlmsg_reply(msg, info);
1094 }
1095
1096 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1097 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1098 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1099 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1100 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1101 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1102 };
1103
1104 static int parse_txq_params(struct nlattr *tb[],
1105 struct ieee80211_txq_params *txq_params)
1106 {
1107 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1108 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1109 !tb[NL80211_TXQ_ATTR_AIFS])
1110 return -EINVAL;
1111
1112 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1113 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1114 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1115 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1116 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1117
1118 if (txq_params->ac >= NL80211_NUM_ACS)
1119 return -EINVAL;
1120
1121 return 0;
1122 }
1123
1124 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1125 {
1126 /*
1127 * You can only set the channel explicitly for AP, mesh
1128 * and WDS type interfaces; all others have their channel
1129 * managed via their respective "establish a connection"
1130 * command (connect, join, ...)
1131 *
1132 * Monitors are special as they are normally slaved to
1133 * whatever else is going on, so they behave as though
1134 * you tried setting the wiphy channel itself.
1135 */
1136 return !wdev ||
1137 wdev->iftype == NL80211_IFTYPE_AP ||
1138 wdev->iftype == NL80211_IFTYPE_WDS ||
1139 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1140 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1141 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1142 }
1143
1144 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1145 struct wireless_dev *wdev,
1146 struct genl_info *info)
1147 {
1148 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1149 u32 freq;
1150 int result;
1151
1152 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1153 return -EINVAL;
1154
1155 if (!nl80211_can_set_dev_channel(wdev))
1156 return -EOPNOTSUPP;
1157
1158 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1159 channel_type = nla_get_u32(info->attrs[
1160 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1161 if (channel_type != NL80211_CHAN_NO_HT &&
1162 channel_type != NL80211_CHAN_HT20 &&
1163 channel_type != NL80211_CHAN_HT40PLUS &&
1164 channel_type != NL80211_CHAN_HT40MINUS)
1165 return -EINVAL;
1166 }
1167
1168 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1169
1170 mutex_lock(&rdev->devlist_mtx);
1171 if (wdev) {
1172 wdev_lock(wdev);
1173 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1174 wdev_unlock(wdev);
1175 } else {
1176 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1177 }
1178 mutex_unlock(&rdev->devlist_mtx);
1179
1180 return result;
1181 }
1182
1183 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1184 {
1185 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1186 struct net_device *netdev = info->user_ptr[1];
1187
1188 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1189 }
1190
1191 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1192 {
1193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1194 struct net_device *dev = info->user_ptr[1];
1195 struct wireless_dev *wdev = dev->ieee80211_ptr;
1196 const u8 *bssid;
1197
1198 if (!info->attrs[NL80211_ATTR_MAC])
1199 return -EINVAL;
1200
1201 if (netif_running(dev))
1202 return -EBUSY;
1203
1204 if (!rdev->ops->set_wds_peer)
1205 return -EOPNOTSUPP;
1206
1207 if (wdev->iftype != NL80211_IFTYPE_WDS)
1208 return -EOPNOTSUPP;
1209
1210 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1211 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1212 }
1213
1214
1215 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1216 {
1217 struct cfg80211_registered_device *rdev;
1218 struct net_device *netdev = NULL;
1219 struct wireless_dev *wdev;
1220 int result = 0, rem_txq_params = 0;
1221 struct nlattr *nl_txq_params;
1222 u32 changed;
1223 u8 retry_short = 0, retry_long = 0;
1224 u32 frag_threshold = 0, rts_threshold = 0;
1225 u8 coverage_class = 0;
1226
1227 /*
1228 * Try to find the wiphy and netdev. Normally this
1229 * function shouldn't need the netdev, but this is
1230 * done for backward compatibility -- previously
1231 * setting the channel was done per wiphy, but now
1232 * it is per netdev. Previous userland like hostapd
1233 * also passed a netdev to set_wiphy, so that it is
1234 * possible to let that go to the right netdev!
1235 */
1236 mutex_lock(&cfg80211_mutex);
1237
1238 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1239 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1240
1241 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1242 if (netdev && netdev->ieee80211_ptr) {
1243 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1244 mutex_lock(&rdev->mtx);
1245 } else
1246 netdev = NULL;
1247 }
1248
1249 if (!netdev) {
1250 rdev = __cfg80211_rdev_from_info(info);
1251 if (IS_ERR(rdev)) {
1252 mutex_unlock(&cfg80211_mutex);
1253 return PTR_ERR(rdev);
1254 }
1255 wdev = NULL;
1256 netdev = NULL;
1257 result = 0;
1258
1259 mutex_lock(&rdev->mtx);
1260 } else if (netif_running(netdev) &&
1261 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1262 wdev = netdev->ieee80211_ptr;
1263 else
1264 wdev = NULL;
1265
1266 /*
1267 * end workaround code, by now the rdev is available
1268 * and locked, and wdev may or may not be NULL.
1269 */
1270
1271 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1272 result = cfg80211_dev_rename(
1273 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1274
1275 mutex_unlock(&cfg80211_mutex);
1276
1277 if (result)
1278 goto bad_res;
1279
1280 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1281 struct ieee80211_txq_params txq_params;
1282 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1283
1284 if (!rdev->ops->set_txq_params) {
1285 result = -EOPNOTSUPP;
1286 goto bad_res;
1287 }
1288
1289 if (!netdev) {
1290 result = -EINVAL;
1291 goto bad_res;
1292 }
1293
1294 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1295 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1296 result = -EINVAL;
1297 goto bad_res;
1298 }
1299
1300 nla_for_each_nested(nl_txq_params,
1301 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1302 rem_txq_params) {
1303 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1304 nla_data(nl_txq_params),
1305 nla_len(nl_txq_params),
1306 txq_params_policy);
1307 result = parse_txq_params(tb, &txq_params);
1308 if (result)
1309 goto bad_res;
1310
1311 result = rdev->ops->set_txq_params(&rdev->wiphy,
1312 netdev,
1313 &txq_params);
1314 if (result)
1315 goto bad_res;
1316 }
1317 }
1318
1319 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1320 result = __nl80211_set_channel(rdev, wdev, info);
1321 if (result)
1322 goto bad_res;
1323 }
1324
1325 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1326 enum nl80211_tx_power_setting type;
1327 int idx, mbm = 0;
1328
1329 if (!rdev->ops->set_tx_power) {
1330 result = -EOPNOTSUPP;
1331 goto bad_res;
1332 }
1333
1334 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1335 type = nla_get_u32(info->attrs[idx]);
1336
1337 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1338 (type != NL80211_TX_POWER_AUTOMATIC)) {
1339 result = -EINVAL;
1340 goto bad_res;
1341 }
1342
1343 if (type != NL80211_TX_POWER_AUTOMATIC) {
1344 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1345 mbm = nla_get_u32(info->attrs[idx]);
1346 }
1347
1348 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1349 if (result)
1350 goto bad_res;
1351 }
1352
1353 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1354 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1355 u32 tx_ant, rx_ant;
1356 if ((!rdev->wiphy.available_antennas_tx &&
1357 !rdev->wiphy.available_antennas_rx) ||
1358 !rdev->ops->set_antenna) {
1359 result = -EOPNOTSUPP;
1360 goto bad_res;
1361 }
1362
1363 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1364 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1365
1366 /* reject antenna configurations which don't match the
1367 * available antenna masks, except for the "all" mask */
1368 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1369 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1370 result = -EINVAL;
1371 goto bad_res;
1372 }
1373
1374 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1375 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1376
1377 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1378 if (result)
1379 goto bad_res;
1380 }
1381
1382 changed = 0;
1383
1384 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1385 retry_short = nla_get_u8(
1386 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1387 if (retry_short == 0) {
1388 result = -EINVAL;
1389 goto bad_res;
1390 }
1391 changed |= WIPHY_PARAM_RETRY_SHORT;
1392 }
1393
1394 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1395 retry_long = nla_get_u8(
1396 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1397 if (retry_long == 0) {
1398 result = -EINVAL;
1399 goto bad_res;
1400 }
1401 changed |= WIPHY_PARAM_RETRY_LONG;
1402 }
1403
1404 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1405 frag_threshold = nla_get_u32(
1406 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1407 if (frag_threshold < 256) {
1408 result = -EINVAL;
1409 goto bad_res;
1410 }
1411 if (frag_threshold != (u32) -1) {
1412 /*
1413 * Fragments (apart from the last one) are required to
1414 * have even length. Make the fragmentation code
1415 * simpler by stripping LSB should someone try to use
1416 * odd threshold value.
1417 */
1418 frag_threshold &= ~0x1;
1419 }
1420 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1421 }
1422
1423 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1424 rts_threshold = nla_get_u32(
1425 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1426 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1427 }
1428
1429 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1430 coverage_class = nla_get_u8(
1431 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1432 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1433 }
1434
1435 if (changed) {
1436 u8 old_retry_short, old_retry_long;
1437 u32 old_frag_threshold, old_rts_threshold;
1438 u8 old_coverage_class;
1439
1440 if (!rdev->ops->set_wiphy_params) {
1441 result = -EOPNOTSUPP;
1442 goto bad_res;
1443 }
1444
1445 old_retry_short = rdev->wiphy.retry_short;
1446 old_retry_long = rdev->wiphy.retry_long;
1447 old_frag_threshold = rdev->wiphy.frag_threshold;
1448 old_rts_threshold = rdev->wiphy.rts_threshold;
1449 old_coverage_class = rdev->wiphy.coverage_class;
1450
1451 if (changed & WIPHY_PARAM_RETRY_SHORT)
1452 rdev->wiphy.retry_short = retry_short;
1453 if (changed & WIPHY_PARAM_RETRY_LONG)
1454 rdev->wiphy.retry_long = retry_long;
1455 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1456 rdev->wiphy.frag_threshold = frag_threshold;
1457 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1458 rdev->wiphy.rts_threshold = rts_threshold;
1459 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1460 rdev->wiphy.coverage_class = coverage_class;
1461
1462 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1463 if (result) {
1464 rdev->wiphy.retry_short = old_retry_short;
1465 rdev->wiphy.retry_long = old_retry_long;
1466 rdev->wiphy.frag_threshold = old_frag_threshold;
1467 rdev->wiphy.rts_threshold = old_rts_threshold;
1468 rdev->wiphy.coverage_class = old_coverage_class;
1469 }
1470 }
1471
1472 bad_res:
1473 mutex_unlock(&rdev->mtx);
1474 if (netdev)
1475 dev_put(netdev);
1476 return result;
1477 }
1478
1479
1480 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1481 struct cfg80211_registered_device *rdev,
1482 struct net_device *dev)
1483 {
1484 void *hdr;
1485
1486 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1487 if (!hdr)
1488 return -1;
1489
1490 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1491 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1492 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1493 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1494
1495 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1496 rdev->devlist_generation ^
1497 (cfg80211_rdev_list_generation << 2));
1498
1499 return genlmsg_end(msg, hdr);
1500
1501 nla_put_failure:
1502 genlmsg_cancel(msg, hdr);
1503 return -EMSGSIZE;
1504 }
1505
1506 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1507 {
1508 int wp_idx = 0;
1509 int if_idx = 0;
1510 int wp_start = cb->args[0];
1511 int if_start = cb->args[1];
1512 struct cfg80211_registered_device *rdev;
1513 struct wireless_dev *wdev;
1514
1515 mutex_lock(&cfg80211_mutex);
1516 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1517 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1518 continue;
1519 if (wp_idx < wp_start) {
1520 wp_idx++;
1521 continue;
1522 }
1523 if_idx = 0;
1524
1525 mutex_lock(&rdev->devlist_mtx);
1526 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1527 if (if_idx < if_start) {
1528 if_idx++;
1529 continue;
1530 }
1531 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1532 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1533 rdev, wdev->netdev) < 0) {
1534 mutex_unlock(&rdev->devlist_mtx);
1535 goto out;
1536 }
1537 if_idx++;
1538 }
1539 mutex_unlock(&rdev->devlist_mtx);
1540
1541 wp_idx++;
1542 }
1543 out:
1544 mutex_unlock(&cfg80211_mutex);
1545
1546 cb->args[0] = wp_idx;
1547 cb->args[1] = if_idx;
1548
1549 return skb->len;
1550 }
1551
1552 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1553 {
1554 struct sk_buff *msg;
1555 struct cfg80211_registered_device *dev = info->user_ptr[0];
1556 struct net_device *netdev = info->user_ptr[1];
1557
1558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1559 if (!msg)
1560 return -ENOMEM;
1561
1562 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1563 dev, netdev) < 0) {
1564 nlmsg_free(msg);
1565 return -ENOBUFS;
1566 }
1567
1568 return genlmsg_reply(msg, info);
1569 }
1570
1571 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1572 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1573 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1574 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1575 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1576 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1577 };
1578
1579 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1580 {
1581 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1582 int flag;
1583
1584 *mntrflags = 0;
1585
1586 if (!nla)
1587 return -EINVAL;
1588
1589 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1590 nla, mntr_flags_policy))
1591 return -EINVAL;
1592
1593 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1594 if (flags[flag])
1595 *mntrflags |= (1<<flag);
1596
1597 return 0;
1598 }
1599
1600 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1601 struct net_device *netdev, u8 use_4addr,
1602 enum nl80211_iftype iftype)
1603 {
1604 if (!use_4addr) {
1605 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1606 return -EBUSY;
1607 return 0;
1608 }
1609
1610 switch (iftype) {
1611 case NL80211_IFTYPE_AP_VLAN:
1612 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1613 return 0;
1614 break;
1615 case NL80211_IFTYPE_STATION:
1616 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1617 return 0;
1618 break;
1619 default:
1620 break;
1621 }
1622
1623 return -EOPNOTSUPP;
1624 }
1625
1626 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1627 {
1628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1629 struct vif_params params;
1630 int err;
1631 enum nl80211_iftype otype, ntype;
1632 struct net_device *dev = info->user_ptr[1];
1633 u32 _flags, *flags = NULL;
1634 bool change = false;
1635
1636 memset(&params, 0, sizeof(params));
1637
1638 otype = ntype = dev->ieee80211_ptr->iftype;
1639
1640 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1641 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1642 if (otype != ntype)
1643 change = true;
1644 if (ntype > NL80211_IFTYPE_MAX)
1645 return -EINVAL;
1646 }
1647
1648 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1649 struct wireless_dev *wdev = dev->ieee80211_ptr;
1650
1651 if (ntype != NL80211_IFTYPE_MESH_POINT)
1652 return -EINVAL;
1653 if (netif_running(dev))
1654 return -EBUSY;
1655
1656 wdev_lock(wdev);
1657 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1658 IEEE80211_MAX_MESH_ID_LEN);
1659 wdev->mesh_id_up_len =
1660 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1661 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1662 wdev->mesh_id_up_len);
1663 wdev_unlock(wdev);
1664 }
1665
1666 if (info->attrs[NL80211_ATTR_4ADDR]) {
1667 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1668 change = true;
1669 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1670 if (err)
1671 return err;
1672 } else {
1673 params.use_4addr = -1;
1674 }
1675
1676 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1677 if (ntype != NL80211_IFTYPE_MONITOR)
1678 return -EINVAL;
1679 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1680 &_flags);
1681 if (err)
1682 return err;
1683
1684 flags = &_flags;
1685 change = true;
1686 }
1687
1688 if (change)
1689 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1690 else
1691 err = 0;
1692
1693 if (!err && params.use_4addr != -1)
1694 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1695
1696 return err;
1697 }
1698
1699 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1700 {
1701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1702 struct vif_params params;
1703 struct net_device *dev;
1704 int err;
1705 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1706 u32 flags;
1707
1708 memset(&params, 0, sizeof(params));
1709
1710 if (!info->attrs[NL80211_ATTR_IFNAME])
1711 return -EINVAL;
1712
1713 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1714 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1715 if (type > NL80211_IFTYPE_MAX)
1716 return -EINVAL;
1717 }
1718
1719 if (!rdev->ops->add_virtual_intf ||
1720 !(rdev->wiphy.interface_modes & (1 << type)))
1721 return -EOPNOTSUPP;
1722
1723 if (info->attrs[NL80211_ATTR_4ADDR]) {
1724 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1725 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1726 if (err)
1727 return err;
1728 }
1729
1730 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1731 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1732 &flags);
1733 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1734 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1735 type, err ? NULL : &flags, &params);
1736 if (IS_ERR(dev))
1737 return PTR_ERR(dev);
1738
1739 if (type == NL80211_IFTYPE_MESH_POINT &&
1740 info->attrs[NL80211_ATTR_MESH_ID]) {
1741 struct wireless_dev *wdev = dev->ieee80211_ptr;
1742
1743 wdev_lock(wdev);
1744 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1745 IEEE80211_MAX_MESH_ID_LEN);
1746 wdev->mesh_id_up_len =
1747 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1748 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1749 wdev->mesh_id_up_len);
1750 wdev_unlock(wdev);
1751 }
1752
1753 return 0;
1754 }
1755
1756 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1757 {
1758 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1759 struct net_device *dev = info->user_ptr[1];
1760
1761 if (!rdev->ops->del_virtual_intf)
1762 return -EOPNOTSUPP;
1763
1764 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1765 }
1766
1767 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1768 {
1769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1770 struct net_device *dev = info->user_ptr[1];
1771 u16 noack_map;
1772
1773 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1774 return -EINVAL;
1775
1776 if (!rdev->ops->set_noack_map)
1777 return -EOPNOTSUPP;
1778
1779 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1780
1781 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1782 }
1783
1784 struct get_key_cookie {
1785 struct sk_buff *msg;
1786 int error;
1787 int idx;
1788 };
1789
1790 static void get_key_callback(void *c, struct key_params *params)
1791 {
1792 struct nlattr *key;
1793 struct get_key_cookie *cookie = c;
1794
1795 if (params->key)
1796 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1797 params->key_len, params->key);
1798
1799 if (params->seq)
1800 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1801 params->seq_len, params->seq);
1802
1803 if (params->cipher)
1804 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1805 params->cipher);
1806
1807 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1808 if (!key)
1809 goto nla_put_failure;
1810
1811 if (params->key)
1812 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1813 params->key_len, params->key);
1814
1815 if (params->seq)
1816 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1817 params->seq_len, params->seq);
1818
1819 if (params->cipher)
1820 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1821 params->cipher);
1822
1823 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1824
1825 nla_nest_end(cookie->msg, key);
1826
1827 return;
1828 nla_put_failure:
1829 cookie->error = 1;
1830 }
1831
1832 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1833 {
1834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1835 int err;
1836 struct net_device *dev = info->user_ptr[1];
1837 u8 key_idx = 0;
1838 const u8 *mac_addr = NULL;
1839 bool pairwise;
1840 struct get_key_cookie cookie = {
1841 .error = 0,
1842 };
1843 void *hdr;
1844 struct sk_buff *msg;
1845
1846 if (info->attrs[NL80211_ATTR_KEY_IDX])
1847 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1848
1849 if (key_idx > 5)
1850 return -EINVAL;
1851
1852 if (info->attrs[NL80211_ATTR_MAC])
1853 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1854
1855 pairwise = !!mac_addr;
1856 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1857 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1858 if (kt >= NUM_NL80211_KEYTYPES)
1859 return -EINVAL;
1860 if (kt != NL80211_KEYTYPE_GROUP &&
1861 kt != NL80211_KEYTYPE_PAIRWISE)
1862 return -EINVAL;
1863 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1864 }
1865
1866 if (!rdev->ops->get_key)
1867 return -EOPNOTSUPP;
1868
1869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1870 if (!msg)
1871 return -ENOMEM;
1872
1873 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1874 NL80211_CMD_NEW_KEY);
1875 if (IS_ERR(hdr))
1876 return PTR_ERR(hdr);
1877
1878 cookie.msg = msg;
1879 cookie.idx = key_idx;
1880
1881 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1882 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1883 if (mac_addr)
1884 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1885
1886 if (pairwise && mac_addr &&
1887 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1888 return -ENOENT;
1889
1890 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1891 mac_addr, &cookie, get_key_callback);
1892
1893 if (err)
1894 goto free_msg;
1895
1896 if (cookie.error)
1897 goto nla_put_failure;
1898
1899 genlmsg_end(msg, hdr);
1900 return genlmsg_reply(msg, info);
1901
1902 nla_put_failure:
1903 err = -ENOBUFS;
1904 free_msg:
1905 nlmsg_free(msg);
1906 return err;
1907 }
1908
1909 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1910 {
1911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1912 struct key_parse key;
1913 int err;
1914 struct net_device *dev = info->user_ptr[1];
1915
1916 err = nl80211_parse_key(info, &key);
1917 if (err)
1918 return err;
1919
1920 if (key.idx < 0)
1921 return -EINVAL;
1922
1923 /* only support setting default key */
1924 if (!key.def && !key.defmgmt)
1925 return -EINVAL;
1926
1927 wdev_lock(dev->ieee80211_ptr);
1928
1929 if (key.def) {
1930 if (!rdev->ops->set_default_key) {
1931 err = -EOPNOTSUPP;
1932 goto out;
1933 }
1934
1935 err = nl80211_key_allowed(dev->ieee80211_ptr);
1936 if (err)
1937 goto out;
1938
1939 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1940 key.def_uni, key.def_multi);
1941
1942 if (err)
1943 goto out;
1944
1945 #ifdef CONFIG_CFG80211_WEXT
1946 dev->ieee80211_ptr->wext.default_key = key.idx;
1947 #endif
1948 } else {
1949 if (key.def_uni || !key.def_multi) {
1950 err = -EINVAL;
1951 goto out;
1952 }
1953
1954 if (!rdev->ops->set_default_mgmt_key) {
1955 err = -EOPNOTSUPP;
1956 goto out;
1957 }
1958
1959 err = nl80211_key_allowed(dev->ieee80211_ptr);
1960 if (err)
1961 goto out;
1962
1963 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1964 dev, key.idx);
1965 if (err)
1966 goto out;
1967
1968 #ifdef CONFIG_CFG80211_WEXT
1969 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1970 #endif
1971 }
1972
1973 out:
1974 wdev_unlock(dev->ieee80211_ptr);
1975
1976 return err;
1977 }
1978
1979 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1980 {
1981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1982 int err;
1983 struct net_device *dev = info->user_ptr[1];
1984 struct key_parse key;
1985 const u8 *mac_addr = NULL;
1986
1987 err = nl80211_parse_key(info, &key);
1988 if (err)
1989 return err;
1990
1991 if (!key.p.key)
1992 return -EINVAL;
1993
1994 if (info->attrs[NL80211_ATTR_MAC])
1995 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1996
1997 if (key.type == -1) {
1998 if (mac_addr)
1999 key.type = NL80211_KEYTYPE_PAIRWISE;
2000 else
2001 key.type = NL80211_KEYTYPE_GROUP;
2002 }
2003
2004 /* for now */
2005 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2006 key.type != NL80211_KEYTYPE_GROUP)
2007 return -EINVAL;
2008
2009 if (!rdev->ops->add_key)
2010 return -EOPNOTSUPP;
2011
2012 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2013 key.type == NL80211_KEYTYPE_PAIRWISE,
2014 mac_addr))
2015 return -EINVAL;
2016
2017 wdev_lock(dev->ieee80211_ptr);
2018 err = nl80211_key_allowed(dev->ieee80211_ptr);
2019 if (!err)
2020 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2021 key.type == NL80211_KEYTYPE_PAIRWISE,
2022 mac_addr, &key.p);
2023 wdev_unlock(dev->ieee80211_ptr);
2024
2025 return err;
2026 }
2027
2028 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2029 {
2030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2031 int err;
2032 struct net_device *dev = info->user_ptr[1];
2033 u8 *mac_addr = NULL;
2034 struct key_parse key;
2035
2036 err = nl80211_parse_key(info, &key);
2037 if (err)
2038 return err;
2039
2040 if (info->attrs[NL80211_ATTR_MAC])
2041 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2042
2043 if (key.type == -1) {
2044 if (mac_addr)
2045 key.type = NL80211_KEYTYPE_PAIRWISE;
2046 else
2047 key.type = NL80211_KEYTYPE_GROUP;
2048 }
2049
2050 /* for now */
2051 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2052 key.type != NL80211_KEYTYPE_GROUP)
2053 return -EINVAL;
2054
2055 if (!rdev->ops->del_key)
2056 return -EOPNOTSUPP;
2057
2058 wdev_lock(dev->ieee80211_ptr);
2059 err = nl80211_key_allowed(dev->ieee80211_ptr);
2060
2061 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2062 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2063 err = -ENOENT;
2064
2065 if (!err)
2066 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2067 key.type == NL80211_KEYTYPE_PAIRWISE,
2068 mac_addr);
2069
2070 #ifdef CONFIG_CFG80211_WEXT
2071 if (!err) {
2072 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2073 dev->ieee80211_ptr->wext.default_key = -1;
2074 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2075 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2076 }
2077 #endif
2078 wdev_unlock(dev->ieee80211_ptr);
2079
2080 return err;
2081 }
2082
2083 static int nl80211_parse_beacon(struct genl_info *info,
2084 struct cfg80211_beacon_data *bcn)
2085 {
2086 bool haveinfo = false;
2087
2088 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2089 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2090 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2091 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2092 return -EINVAL;
2093
2094 memset(bcn, 0, sizeof(*bcn));
2095
2096 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2097 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2098 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2099 if (!bcn->head_len)
2100 return -EINVAL;
2101 haveinfo = true;
2102 }
2103
2104 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2105 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2106 bcn->tail_len =
2107 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2108 haveinfo = true;
2109 }
2110
2111 if (!haveinfo)
2112 return -EINVAL;
2113
2114 if (info->attrs[NL80211_ATTR_IE]) {
2115 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2116 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2117 }
2118
2119 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2120 bcn->proberesp_ies =
2121 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2122 bcn->proberesp_ies_len =
2123 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2124 }
2125
2126 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2127 bcn->assocresp_ies =
2128 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2129 bcn->assocresp_ies_len =
2130 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2131 }
2132
2133 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2134 bcn->probe_resp =
2135 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2136 bcn->probe_resp_len =
2137 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2138 }
2139
2140 return 0;
2141 }
2142
2143 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2144 {
2145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2146 struct net_device *dev = info->user_ptr[1];
2147 struct wireless_dev *wdev = dev->ieee80211_ptr;
2148 struct cfg80211_ap_settings params;
2149 int err;
2150
2151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2153 return -EOPNOTSUPP;
2154
2155 if (!rdev->ops->start_ap)
2156 return -EOPNOTSUPP;
2157
2158 if (wdev->beacon_interval)
2159 return -EALREADY;
2160
2161 memset(&params, 0, sizeof(params));
2162
2163 /* these are required for START_AP */
2164 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2165 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2166 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2167 return -EINVAL;
2168
2169 err = nl80211_parse_beacon(info, &params.beacon);
2170 if (err)
2171 return err;
2172
2173 params.beacon_interval =
2174 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2175 params.dtim_period =
2176 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2177
2178 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2179 if (err)
2180 return err;
2181
2182 /*
2183 * In theory, some of these attributes should be required here
2184 * but since they were not used when the command was originally
2185 * added, keep them optional for old user space programs to let
2186 * them continue to work with drivers that do not need the
2187 * additional information -- drivers must check!
2188 */
2189 if (info->attrs[NL80211_ATTR_SSID]) {
2190 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2191 params.ssid_len =
2192 nla_len(info->attrs[NL80211_ATTR_SSID]);
2193 if (params.ssid_len == 0 ||
2194 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2195 return -EINVAL;
2196 }
2197
2198 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2199 params.hidden_ssid = nla_get_u32(
2200 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2201 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2202 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2203 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2204 return -EINVAL;
2205 }
2206
2207 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2208
2209 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2210 params.auth_type = nla_get_u32(
2211 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2212 if (!nl80211_valid_auth_type(params.auth_type))
2213 return -EINVAL;
2214 } else
2215 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2216
2217 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2218 NL80211_MAX_NR_CIPHER_SUITES);
2219 if (err)
2220 return err;
2221
2222 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2223 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2224 return -EOPNOTSUPP;
2225 params.inactivity_timeout = nla_get_u16(
2226 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2227 }
2228
2229 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2230 if (!err)
2231 wdev->beacon_interval = params.beacon_interval;
2232 return err;
2233 }
2234
2235 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2236 {
2237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2238 struct net_device *dev = info->user_ptr[1];
2239 struct wireless_dev *wdev = dev->ieee80211_ptr;
2240 struct cfg80211_beacon_data params;
2241 int err;
2242
2243 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2244 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2245 return -EOPNOTSUPP;
2246
2247 if (!rdev->ops->change_beacon)
2248 return -EOPNOTSUPP;
2249
2250 if (!wdev->beacon_interval)
2251 return -EINVAL;
2252
2253 err = nl80211_parse_beacon(info, &params);
2254 if (err)
2255 return err;
2256
2257 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2258 }
2259
2260 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2261 {
2262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2263 struct net_device *dev = info->user_ptr[1];
2264 struct wireless_dev *wdev = dev->ieee80211_ptr;
2265 int err;
2266
2267 if (!rdev->ops->stop_ap)
2268 return -EOPNOTSUPP;
2269
2270 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2271 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2272 return -EOPNOTSUPP;
2273
2274 if (!wdev->beacon_interval)
2275 return -ENOENT;
2276
2277 err = rdev->ops->stop_ap(&rdev->wiphy, dev);
2278 if (!err)
2279 wdev->beacon_interval = 0;
2280 return err;
2281 }
2282
2283 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2284 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2285 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2286 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2287 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2288 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2289 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2290 };
2291
2292 static int parse_station_flags(struct genl_info *info,
2293 enum nl80211_iftype iftype,
2294 struct station_parameters *params)
2295 {
2296 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2297 struct nlattr *nla;
2298 int flag;
2299
2300 /*
2301 * Try parsing the new attribute first so userspace
2302 * can specify both for older kernels.
2303 */
2304 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2305 if (nla) {
2306 struct nl80211_sta_flag_update *sta_flags;
2307
2308 sta_flags = nla_data(nla);
2309 params->sta_flags_mask = sta_flags->mask;
2310 params->sta_flags_set = sta_flags->set;
2311 if ((params->sta_flags_mask |
2312 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2313 return -EINVAL;
2314 return 0;
2315 }
2316
2317 /* if present, parse the old attribute */
2318
2319 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2320 if (!nla)
2321 return 0;
2322
2323 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2324 nla, sta_flags_policy))
2325 return -EINVAL;
2326
2327 /*
2328 * Only allow certain flags for interface types so that
2329 * other attributes are silently ignored. Remember that
2330 * this is backward compatibility code with old userspace
2331 * and shouldn't be hit in other cases anyway.
2332 */
2333 switch (iftype) {
2334 case NL80211_IFTYPE_AP:
2335 case NL80211_IFTYPE_AP_VLAN:
2336 case NL80211_IFTYPE_P2P_GO:
2337 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2338 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2339 BIT(NL80211_STA_FLAG_WME) |
2340 BIT(NL80211_STA_FLAG_MFP);
2341 break;
2342 case NL80211_IFTYPE_P2P_CLIENT:
2343 case NL80211_IFTYPE_STATION:
2344 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2345 BIT(NL80211_STA_FLAG_TDLS_PEER);
2346 break;
2347 case NL80211_IFTYPE_MESH_POINT:
2348 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2349 BIT(NL80211_STA_FLAG_MFP) |
2350 BIT(NL80211_STA_FLAG_AUTHORIZED);
2351 default:
2352 return -EINVAL;
2353 }
2354
2355 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2356 if (flags[flag])
2357 params->sta_flags_set |= (1<<flag);
2358
2359 return 0;
2360 }
2361
2362 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2363 int attr)
2364 {
2365 struct nlattr *rate;
2366 u16 bitrate;
2367
2368 rate = nla_nest_start(msg, attr);
2369 if (!rate)
2370 goto nla_put_failure;
2371
2372 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2373 bitrate = cfg80211_calculate_bitrate(info);
2374 if (bitrate > 0)
2375 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2376
2377 if (info->flags & RATE_INFO_FLAGS_MCS)
2378 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2379 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2380 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2381 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2382 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2383
2384 nla_nest_end(msg, rate);
2385 return true;
2386
2387 nla_put_failure:
2388 return false;
2389 }
2390
2391 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2392 int flags,
2393 struct cfg80211_registered_device *rdev,
2394 struct net_device *dev,
2395 const u8 *mac_addr, struct station_info *sinfo)
2396 {
2397 void *hdr;
2398 struct nlattr *sinfoattr, *bss_param;
2399
2400 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2401 if (!hdr)
2402 return -1;
2403
2404 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2405 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2406
2407 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2408
2409 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2410 if (!sinfoattr)
2411 goto nla_put_failure;
2412 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2413 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2414 sinfo->connected_time);
2415 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2416 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2417 sinfo->inactive_time);
2418 if (sinfo->filled & STATION_INFO_RX_BYTES)
2419 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2420 sinfo->rx_bytes);
2421 if (sinfo->filled & STATION_INFO_TX_BYTES)
2422 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2423 sinfo->tx_bytes);
2424 if (sinfo->filled & STATION_INFO_LLID)
2425 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2426 sinfo->llid);
2427 if (sinfo->filled & STATION_INFO_PLID)
2428 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2429 sinfo->plid);
2430 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2431 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2432 sinfo->plink_state);
2433 switch (rdev->wiphy.signal_type) {
2434 case CFG80211_SIGNAL_TYPE_MBM:
2435 if (sinfo->filled & STATION_INFO_SIGNAL)
2436 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2437 sinfo->signal);
2438 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2439 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2440 sinfo->signal_avg);
2441 break;
2442 default:
2443 break;
2444 }
2445 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2446 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2447 NL80211_STA_INFO_TX_BITRATE))
2448 goto nla_put_failure;
2449 }
2450 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2451 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2452 NL80211_STA_INFO_RX_BITRATE))
2453 goto nla_put_failure;
2454 }
2455 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2456 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2457 sinfo->rx_packets);
2458 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2459 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2460 sinfo->tx_packets);
2461 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2462 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2463 sinfo->tx_retries);
2464 if (sinfo->filled & STATION_INFO_TX_FAILED)
2465 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2466 sinfo->tx_failed);
2467 if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
2468 NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
2469 sinfo->beacon_loss_count);
2470 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2471 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2472 if (!bss_param)
2473 goto nla_put_failure;
2474
2475 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2476 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2477 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2478 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2479 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2480 NLA_PUT_FLAG(msg,
2481 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2482 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2483 sinfo->bss_param.dtim_period);
2484 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2485 sinfo->bss_param.beacon_interval);
2486
2487 nla_nest_end(msg, bss_param);
2488 }
2489 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2490 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2491 sizeof(struct nl80211_sta_flag_update),
2492 &sinfo->sta_flags);
2493 if (sinfo->filled & STATION_INFO_T_OFFSET)
2494 NLA_PUT_U64(msg, NL80211_STA_INFO_T_OFFSET,
2495 sinfo->t_offset);
2496 nla_nest_end(msg, sinfoattr);
2497
2498 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2499 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2500 sinfo->assoc_req_ies);
2501
2502 return genlmsg_end(msg, hdr);
2503
2504 nla_put_failure:
2505 genlmsg_cancel(msg, hdr);
2506 return -EMSGSIZE;
2507 }
2508
2509 static int nl80211_dump_station(struct sk_buff *skb,
2510 struct netlink_callback *cb)
2511 {
2512 struct station_info sinfo;
2513 struct cfg80211_registered_device *dev;
2514 struct net_device *netdev;
2515 u8 mac_addr[ETH_ALEN];
2516 int sta_idx = cb->args[1];
2517 int err;
2518
2519 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2520 if (err)
2521 return err;
2522
2523 if (!dev->ops->dump_station) {
2524 err = -EOPNOTSUPP;
2525 goto out_err;
2526 }
2527
2528 while (1) {
2529 memset(&sinfo, 0, sizeof(sinfo));
2530 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2531 mac_addr, &sinfo);
2532 if (err == -ENOENT)
2533 break;
2534 if (err)
2535 goto out_err;
2536
2537 if (nl80211_send_station(skb,
2538 NETLINK_CB(cb->skb).pid,
2539 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2540 dev, netdev, mac_addr,
2541 &sinfo) < 0)
2542 goto out;
2543
2544 sta_idx++;
2545 }
2546
2547
2548 out:
2549 cb->args[1] = sta_idx;
2550 err = skb->len;
2551 out_err:
2552 nl80211_finish_netdev_dump(dev);
2553
2554 return err;
2555 }
2556
2557 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2558 {
2559 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2560 struct net_device *dev = info->user_ptr[1];
2561 struct station_info sinfo;
2562 struct sk_buff *msg;
2563 u8 *mac_addr = NULL;
2564 int err;
2565
2566 memset(&sinfo, 0, sizeof(sinfo));
2567
2568 if (!info->attrs[NL80211_ATTR_MAC])
2569 return -EINVAL;
2570
2571 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2572
2573 if (!rdev->ops->get_station)
2574 return -EOPNOTSUPP;
2575
2576 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2577 if (err)
2578 return err;
2579
2580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2581 if (!msg)
2582 return -ENOMEM;
2583
2584 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2585 rdev, dev, mac_addr, &sinfo) < 0) {
2586 nlmsg_free(msg);
2587 return -ENOBUFS;
2588 }
2589
2590 return genlmsg_reply(msg, info);
2591 }
2592
2593 /*
2594 * Get vlan interface making sure it is running and on the right wiphy.
2595 */
2596 static struct net_device *get_vlan(struct genl_info *info,
2597 struct cfg80211_registered_device *rdev)
2598 {
2599 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2600 struct net_device *v;
2601 int ret;
2602
2603 if (!vlanattr)
2604 return NULL;
2605
2606 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2607 if (!v)
2608 return ERR_PTR(-ENODEV);
2609
2610 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2611 ret = -EINVAL;
2612 goto error;
2613 }
2614
2615 if (!netif_running(v)) {
2616 ret = -ENETDOWN;
2617 goto error;
2618 }
2619
2620 return v;
2621 error:
2622 dev_put(v);
2623 return ERR_PTR(ret);
2624 }
2625
2626 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2627 {
2628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2629 int err;
2630 struct net_device *dev = info->user_ptr[1];
2631 struct station_parameters params;
2632 u8 *mac_addr = NULL;
2633
2634 memset(&params, 0, sizeof(params));
2635
2636 params.listen_interval = -1;
2637 params.plink_state = -1;
2638
2639 if (info->attrs[NL80211_ATTR_STA_AID])
2640 return -EINVAL;
2641
2642 if (!info->attrs[NL80211_ATTR_MAC])
2643 return -EINVAL;
2644
2645 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2646
2647 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2648 params.supported_rates =
2649 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2650 params.supported_rates_len =
2651 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2652 }
2653
2654 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2655 params.listen_interval =
2656 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2657
2658 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2659 params.ht_capa =
2660 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2661
2662 if (!rdev->ops->change_station)
2663 return -EOPNOTSUPP;
2664
2665 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2666 return -EINVAL;
2667
2668 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2669 params.plink_action =
2670 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2671
2672 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2673 params.plink_state =
2674 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2675
2676 switch (dev->ieee80211_ptr->iftype) {
2677 case NL80211_IFTYPE_AP:
2678 case NL80211_IFTYPE_AP_VLAN:
2679 case NL80211_IFTYPE_P2P_GO:
2680 /* disallow mesh-specific things */
2681 if (params.plink_action)
2682 return -EINVAL;
2683
2684 /* TDLS can't be set, ... */
2685 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2686 return -EINVAL;
2687 /*
2688 * ... but don't bother the driver with it. This works around
2689 * a hostapd/wpa_supplicant issue -- it always includes the
2690 * TLDS_PEER flag in the mask even for AP mode.
2691 */
2692 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2693
2694 /* accept only the listed bits */
2695 if (params.sta_flags_mask &
2696 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2697 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2698 BIT(NL80211_STA_FLAG_WME) |
2699 BIT(NL80211_STA_FLAG_MFP)))
2700 return -EINVAL;
2701
2702 /* must be last in here for error handling */
2703 params.vlan = get_vlan(info, rdev);
2704 if (IS_ERR(params.vlan))
2705 return PTR_ERR(params.vlan);
2706 break;
2707 case NL80211_IFTYPE_P2P_CLIENT:
2708 case NL80211_IFTYPE_STATION:
2709 /*
2710 * Don't allow userspace to change the TDLS_PEER flag,
2711 * but silently ignore attempts to change it since we
2712 * don't have state here to verify that it doesn't try
2713 * to change the flag.
2714 */
2715 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2716 /* fall through */
2717 case NL80211_IFTYPE_ADHOC:
2718 /* disallow things sta doesn't support */
2719 if (params.plink_action)
2720 return -EINVAL;
2721 if (params.ht_capa)
2722 return -EINVAL;
2723 if (params.listen_interval >= 0)
2724 return -EINVAL;
2725 /* reject any changes other than AUTHORIZED */
2726 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2727 return -EINVAL;
2728 break;
2729 case NL80211_IFTYPE_MESH_POINT:
2730 /* disallow things mesh doesn't support */
2731 if (params.vlan)
2732 return -EINVAL;
2733 if (params.ht_capa)
2734 return -EINVAL;
2735 if (params.listen_interval >= 0)
2736 return -EINVAL;
2737 /*
2738 * No special handling for TDLS here -- the userspace
2739 * mesh code doesn't have this bug.
2740 */
2741 if (params.sta_flags_mask &
2742 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2743 BIT(NL80211_STA_FLAG_MFP) |
2744 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2745 return -EINVAL;
2746 break;
2747 default:
2748 return -EOPNOTSUPP;
2749 }
2750
2751 /* be aware of params.vlan when changing code here */
2752
2753 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2754
2755 if (params.vlan)
2756 dev_put(params.vlan);
2757
2758 return err;
2759 }
2760
2761 static struct nla_policy
2762 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2763 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2764 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2765 };
2766
2767 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2768 {
2769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2770 int err;
2771 struct net_device *dev = info->user_ptr[1];
2772 struct station_parameters params;
2773 u8 *mac_addr = NULL;
2774
2775 memset(&params, 0, sizeof(params));
2776
2777 if (!info->attrs[NL80211_ATTR_MAC])
2778 return -EINVAL;
2779
2780 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2781 return -EINVAL;
2782
2783 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2784 return -EINVAL;
2785
2786 if (!info->attrs[NL80211_ATTR_STA_AID])
2787 return -EINVAL;
2788
2789 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2790 params.supported_rates =
2791 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2792 params.supported_rates_len =
2793 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2794 params.listen_interval =
2795 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2796
2797 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2798 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2799 return -EINVAL;
2800
2801 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2802 params.ht_capa =
2803 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2804
2805 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2806 params.plink_action =
2807 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2808
2809 if (!rdev->ops->add_station)
2810 return -EOPNOTSUPP;
2811
2812 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2813 return -EINVAL;
2814
2815 switch (dev->ieee80211_ptr->iftype) {
2816 case NL80211_IFTYPE_AP:
2817 case NL80211_IFTYPE_AP_VLAN:
2818 case NL80211_IFTYPE_P2P_GO:
2819 /* parse WME attributes if sta is WME capable */
2820 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2821 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2822 info->attrs[NL80211_ATTR_STA_WME]) {
2823 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2824 struct nlattr *nla;
2825
2826 nla = info->attrs[NL80211_ATTR_STA_WME];
2827 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2828 nl80211_sta_wme_policy);
2829 if (err)
2830 return err;
2831
2832 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2833 params.uapsd_queues =
2834 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2835 if (params.uapsd_queues &
2836 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2837 return -EINVAL;
2838
2839 if (tb[NL80211_STA_WME_MAX_SP])
2840 params.max_sp =
2841 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2842
2843 if (params.max_sp &
2844 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2845 return -EINVAL;
2846
2847 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2848 }
2849 /* TDLS peers cannot be added */
2850 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2851 return -EINVAL;
2852 /* but don't bother the driver with it */
2853 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2854
2855 /* must be last in here for error handling */
2856 params.vlan = get_vlan(info, rdev);
2857 if (IS_ERR(params.vlan))
2858 return PTR_ERR(params.vlan);
2859 break;
2860 case NL80211_IFTYPE_MESH_POINT:
2861 /* TDLS peers cannot be added */
2862 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2863 return -EINVAL;
2864 break;
2865 case NL80211_IFTYPE_STATION:
2866 /* Only TDLS peers can be added */
2867 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2868 return -EINVAL;
2869 /* Can only add if TDLS ... */
2870 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
2871 return -EOPNOTSUPP;
2872 /* ... with external setup is supported */
2873 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
2874 return -EOPNOTSUPP;
2875 break;
2876 default:
2877 return -EOPNOTSUPP;
2878 }
2879
2880 /* be aware of params.vlan when changing code here */
2881
2882 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2883
2884 if (params.vlan)
2885 dev_put(params.vlan);
2886 return err;
2887 }
2888
2889 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2890 {
2891 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2892 struct net_device *dev = info->user_ptr[1];
2893 u8 *mac_addr = NULL;
2894
2895 if (info->attrs[NL80211_ATTR_MAC])
2896 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2897
2898 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2899 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2900 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2901 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2902 return -EINVAL;
2903
2904 if (!rdev->ops->del_station)
2905 return -EOPNOTSUPP;
2906
2907 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2908 }
2909
2910 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2911 int flags, struct net_device *dev,
2912 u8 *dst, u8 *next_hop,
2913 struct mpath_info *pinfo)
2914 {
2915 void *hdr;
2916 struct nlattr *pinfoattr;
2917
2918 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2919 if (!hdr)
2920 return -1;
2921
2922 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2923 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2924 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2925
2926 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2927
2928 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2929 if (!pinfoattr)
2930 goto nla_put_failure;
2931 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2932 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2933 pinfo->frame_qlen);
2934 if (pinfo->filled & MPATH_INFO_SN)
2935 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2936 pinfo->sn);
2937 if (pinfo->filled & MPATH_INFO_METRIC)
2938 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2939 pinfo->metric);
2940 if (pinfo->filled & MPATH_INFO_EXPTIME)
2941 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2942 pinfo->exptime);
2943 if (pinfo->filled & MPATH_INFO_FLAGS)
2944 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2945 pinfo->flags);
2946 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2947 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2948 pinfo->discovery_timeout);
2949 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2950 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2951 pinfo->discovery_retries);
2952
2953 nla_nest_end(msg, pinfoattr);
2954
2955 return genlmsg_end(msg, hdr);
2956
2957 nla_put_failure:
2958 genlmsg_cancel(msg, hdr);
2959 return -EMSGSIZE;
2960 }
2961
2962 static int nl80211_dump_mpath(struct sk_buff *skb,
2963 struct netlink_callback *cb)
2964 {
2965 struct mpath_info pinfo;
2966 struct cfg80211_registered_device *dev;
2967 struct net_device *netdev;
2968 u8 dst[ETH_ALEN];
2969 u8 next_hop[ETH_ALEN];
2970 int path_idx = cb->args[1];
2971 int err;
2972
2973 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2974 if (err)
2975 return err;
2976
2977 if (!dev->ops->dump_mpath) {
2978 err = -EOPNOTSUPP;
2979 goto out_err;
2980 }
2981
2982 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2983 err = -EOPNOTSUPP;
2984 goto out_err;
2985 }
2986
2987 while (1) {
2988 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2989 dst, next_hop, &pinfo);
2990 if (err == -ENOENT)
2991 break;
2992 if (err)
2993 goto out_err;
2994
2995 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2996 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2997 netdev, dst, next_hop,
2998 &pinfo) < 0)
2999 goto out;
3000
3001 path_idx++;
3002 }
3003
3004
3005 out:
3006 cb->args[1] = path_idx;
3007 err = skb->len;
3008 out_err:
3009 nl80211_finish_netdev_dump(dev);
3010 return err;
3011 }
3012
3013 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3014 {
3015 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3016 int err;
3017 struct net_device *dev = info->user_ptr[1];
3018 struct mpath_info pinfo;
3019 struct sk_buff *msg;
3020 u8 *dst = NULL;
3021 u8 next_hop[ETH_ALEN];
3022
3023 memset(&pinfo, 0, sizeof(pinfo));
3024
3025 if (!info->attrs[NL80211_ATTR_MAC])
3026 return -EINVAL;
3027
3028 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3029
3030 if (!rdev->ops->get_mpath)
3031 return -EOPNOTSUPP;
3032
3033 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3034 return -EOPNOTSUPP;
3035
3036 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3037 if (err)
3038 return err;
3039
3040 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3041 if (!msg)
3042 return -ENOMEM;
3043
3044 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3045 dev, dst, next_hop, &pinfo) < 0) {
3046 nlmsg_free(msg);
3047 return -ENOBUFS;
3048 }
3049
3050 return genlmsg_reply(msg, info);
3051 }
3052
3053 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3054 {
3055 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3056 struct net_device *dev = info->user_ptr[1];
3057 u8 *dst = NULL;
3058 u8 *next_hop = NULL;
3059
3060 if (!info->attrs[NL80211_ATTR_MAC])
3061 return -EINVAL;
3062
3063 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3064 return -EINVAL;
3065
3066 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3067 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3068
3069 if (!rdev->ops->change_mpath)
3070 return -EOPNOTSUPP;
3071
3072 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3073 return -EOPNOTSUPP;
3074
3075 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3076 }
3077
3078 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3079 {
3080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3081 struct net_device *dev = info->user_ptr[1];
3082 u8 *dst = NULL;
3083 u8 *next_hop = NULL;
3084
3085 if (!info->attrs[NL80211_ATTR_MAC])
3086 return -EINVAL;
3087
3088 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3089 return -EINVAL;
3090
3091 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3092 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3093
3094 if (!rdev->ops->add_mpath)
3095 return -EOPNOTSUPP;
3096
3097 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3098 return -EOPNOTSUPP;
3099
3100 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3101 }
3102
3103 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3104 {
3105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106 struct net_device *dev = info->user_ptr[1];
3107 u8 *dst = NULL;
3108
3109 if (info->attrs[NL80211_ATTR_MAC])
3110 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3111
3112 if (!rdev->ops->del_mpath)
3113 return -EOPNOTSUPP;
3114
3115 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3116 }
3117
3118 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3119 {
3120 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3121 struct net_device *dev = info->user_ptr[1];
3122 struct bss_parameters params;
3123
3124 memset(&params, 0, sizeof(params));
3125 /* default to not changing parameters */
3126 params.use_cts_prot = -1;
3127 params.use_short_preamble = -1;
3128 params.use_short_slot_time = -1;
3129 params.ap_isolate = -1;
3130 params.ht_opmode = -1;
3131
3132 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3133 params.use_cts_prot =
3134 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3135 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3136 params.use_short_preamble =
3137 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3138 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3139 params.use_short_slot_time =
3140 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3141 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3142 params.basic_rates =
3143 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3144 params.basic_rates_len =
3145 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3146 }
3147 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3148 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3149 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3150 params.ht_opmode =
3151 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3152
3153 if (!rdev->ops->change_bss)
3154 return -EOPNOTSUPP;
3155
3156 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3157 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3158 return -EOPNOTSUPP;
3159
3160 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3161 }
3162
3163 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3164 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3165 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3166 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3167 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3168 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3169 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3170 };
3171
3172 static int parse_reg_rule(struct nlattr *tb[],
3173 struct ieee80211_reg_rule *reg_rule)
3174 {
3175 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3176 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3177
3178 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3179 return -EINVAL;
3180 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3181 return -EINVAL;
3182 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3183 return -EINVAL;
3184 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3185 return -EINVAL;
3186 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3187 return -EINVAL;
3188
3189 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3190
3191 freq_range->start_freq_khz =
3192 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3193 freq_range->end_freq_khz =
3194 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3195 freq_range->max_bandwidth_khz =
3196 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3197
3198 power_rule->max_eirp =
3199 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3200
3201 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3202 power_rule->max_antenna_gain =
3203 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3204
3205 return 0;
3206 }
3207
3208 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3209 {
3210 int r;
3211 char *data = NULL;
3212
3213 /*
3214 * You should only get this when cfg80211 hasn't yet initialized
3215 * completely when built-in to the kernel right between the time
3216 * window between nl80211_init() and regulatory_init(), if that is
3217 * even possible.
3218 */
3219 mutex_lock(&cfg80211_mutex);
3220 if (unlikely(!cfg80211_regdomain)) {
3221 mutex_unlock(&cfg80211_mutex);
3222 return -EINPROGRESS;
3223 }
3224 mutex_unlock(&cfg80211_mutex);
3225
3226 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3227 return -EINVAL;
3228
3229 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3230
3231 r = regulatory_hint_user(data);
3232
3233 return r;
3234 }
3235
3236 static int nl80211_get_mesh_config(struct sk_buff *skb,
3237 struct genl_info *info)
3238 {
3239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3240 struct net_device *dev = info->user_ptr[1];
3241 struct wireless_dev *wdev = dev->ieee80211_ptr;
3242 struct mesh_config cur_params;
3243 int err = 0;
3244 void *hdr;
3245 struct nlattr *pinfoattr;
3246 struct sk_buff *msg;
3247
3248 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3249 return -EOPNOTSUPP;
3250
3251 if (!rdev->ops->get_mesh_config)
3252 return -EOPNOTSUPP;
3253
3254 wdev_lock(wdev);
3255 /* If not connected, get default parameters */
3256 if (!wdev->mesh_id_len)
3257 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3258 else
3259 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3260 &cur_params);
3261 wdev_unlock(wdev);
3262
3263 if (err)
3264 return err;
3265
3266 /* Draw up a netlink message to send back */
3267 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3268 if (!msg)
3269 return -ENOMEM;
3270 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3271 NL80211_CMD_GET_MESH_CONFIG);
3272 if (!hdr)
3273 goto out;
3274 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3275 if (!pinfoattr)
3276 goto nla_put_failure;
3277 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3278 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3279 cur_params.dot11MeshRetryTimeout);
3280 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3281 cur_params.dot11MeshConfirmTimeout);
3282 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3283 cur_params.dot11MeshHoldingTimeout);
3284 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3285 cur_params.dot11MeshMaxPeerLinks);
3286 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3287 cur_params.dot11MeshMaxRetries);
3288 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3289 cur_params.dot11MeshTTL);
3290 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3291 cur_params.element_ttl);
3292 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3293 cur_params.auto_open_plinks);
3294 NLA_PUT_U32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3295 cur_params.dot11MeshNbrOffsetMaxNeighbor);
3296 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3297 cur_params.dot11MeshHWMPmaxPREQretries);
3298 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3299 cur_params.path_refresh_time);
3300 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3301 cur_params.min_discovery_timeout);
3302 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3303 cur_params.dot11MeshHWMPactivePathTimeout);
3304 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3305 cur_params.dot11MeshHWMPpreqMinInterval);
3306 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3307 cur_params.dot11MeshHWMPperrMinInterval);
3308 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3309 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3310 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3311 cur_params.dot11MeshHWMPRootMode);
3312 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3313 cur_params.dot11MeshHWMPRannInterval);
3314 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3315 cur_params.dot11MeshGateAnnouncementProtocol);
3316 NLA_PUT_U8(msg, NL80211_MESHCONF_FORWARDING,
3317 cur_params.dot11MeshForwarding);
3318 NLA_PUT_U32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3319 cur_params.rssi_threshold);
3320 nla_nest_end(msg, pinfoattr);
3321 genlmsg_end(msg, hdr);
3322 return genlmsg_reply(msg, info);
3323
3324 nla_put_failure:
3325 genlmsg_cancel(msg, hdr);
3326 out:
3327 nlmsg_free(msg);
3328 return -ENOBUFS;
3329 }
3330
3331 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3332 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3333 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3334 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3335 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3336 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3337 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3338 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3339 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3340 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3341
3342 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3343 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3344 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3345 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3346 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3347 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3348 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3349 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3350 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3351 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3352 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3353 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32},
3354 };
3355
3356 static const struct nla_policy
3357 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3358 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3359 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3360 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3361 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3362 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3363 .len = IEEE80211_MAX_DATA_LEN },
3364 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3365 };
3366
3367 static int nl80211_parse_mesh_config(struct genl_info *info,
3368 struct mesh_config *cfg,
3369 u32 *mask_out)
3370 {
3371 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3372 u32 mask = 0;
3373
3374 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3375 do {\
3376 if (table[attr_num]) {\
3377 cfg->param = nla_fn(table[attr_num]); \
3378 mask |= (1 << (attr_num - 1)); \
3379 } \
3380 } while (0);\
3381
3382
3383 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3384 return -EINVAL;
3385 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3386 info->attrs[NL80211_ATTR_MESH_CONFIG],
3387 nl80211_meshconf_params_policy))
3388 return -EINVAL;
3389
3390 /* This makes sure that there aren't more than 32 mesh config
3391 * parameters (otherwise our bitfield scheme would not work.) */
3392 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3393
3394 /* Fill in the params struct */
3395 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3396 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3397 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3398 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3399 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3400 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3401 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3402 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3403 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3404 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3405 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3406 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3407 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3408 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3409 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3410 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3411 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
3412 mask, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3413 nla_get_u32);
3414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3415 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3416 nla_get_u8);
3417 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3418 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3419 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3420 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3421 nla_get_u16);
3422 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3423 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3424 nla_get_u32);
3425 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3426 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3427 nla_get_u16);
3428 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3429 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3430 nla_get_u16);
3431 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3432 dot11MeshHWMPnetDiameterTraversalTime,
3433 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3434 nla_get_u16);
3435 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3436 dot11MeshHWMPRootMode, mask,
3437 NL80211_MESHCONF_HWMP_ROOTMODE,
3438 nla_get_u8);
3439 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3440 dot11MeshHWMPRannInterval, mask,
3441 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3442 nla_get_u16);
3443 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3444 dot11MeshGateAnnouncementProtocol, mask,
3445 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3446 nla_get_u8);
3447 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3448 mask, NL80211_MESHCONF_FORWARDING, nla_get_u8);
3449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3450 mask, NL80211_MESHCONF_RSSI_THRESHOLD, nla_get_u32);
3451 if (mask_out)
3452 *mask_out = mask;
3453
3454 return 0;
3455
3456 #undef FILL_IN_MESH_PARAM_IF_SET
3457 }
3458
3459 static int nl80211_parse_mesh_setup(struct genl_info *info,
3460 struct mesh_setup *setup)
3461 {
3462 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3463
3464 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3465 return -EINVAL;
3466 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3467 info->attrs[NL80211_ATTR_MESH_SETUP],
3468 nl80211_mesh_setup_params_policy))
3469 return -EINVAL;
3470
3471 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3472 setup->sync_method =
3473 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3474 IEEE80211_SYNC_METHOD_VENDOR :
3475 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3476
3477 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3478 setup->path_sel_proto =
3479 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3480 IEEE80211_PATH_PROTOCOL_VENDOR :
3481 IEEE80211_PATH_PROTOCOL_HWMP;
3482
3483 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3484 setup->path_metric =
3485 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3486 IEEE80211_PATH_METRIC_VENDOR :
3487 IEEE80211_PATH_METRIC_AIRTIME;
3488
3489
3490 if (tb[NL80211_MESH_SETUP_IE]) {
3491 struct nlattr *ieattr =
3492 tb[NL80211_MESH_SETUP_IE];
3493 if (!is_valid_ie_attr(ieattr))
3494 return -EINVAL;
3495 setup->ie = nla_data(ieattr);
3496 setup->ie_len = nla_len(ieattr);
3497 }
3498 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3499 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3500
3501 return 0;
3502 }
3503
3504 static int nl80211_update_mesh_config(struct sk_buff *skb,
3505 struct genl_info *info)
3506 {
3507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3508 struct net_device *dev = info->user_ptr[1];
3509 struct wireless_dev *wdev = dev->ieee80211_ptr;
3510 struct mesh_config cfg;
3511 u32 mask;
3512 int err;
3513
3514 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3515 return -EOPNOTSUPP;
3516
3517 if (!rdev->ops->update_mesh_config)
3518 return -EOPNOTSUPP;
3519
3520 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3521 if (err)
3522 return err;
3523
3524 wdev_lock(wdev);
3525 if (!wdev->mesh_id_len)
3526 err = -ENOLINK;
3527
3528 if (!err)
3529 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3530 mask, &cfg);
3531
3532 wdev_unlock(wdev);
3533
3534 return err;
3535 }
3536
3537 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3538 {
3539 struct sk_buff *msg;
3540 void *hdr = NULL;
3541 struct nlattr *nl_reg_rules;
3542 unsigned int i;
3543 int err = -EINVAL;
3544
3545 mutex_lock(&cfg80211_mutex);
3546
3547 if (!cfg80211_regdomain)
3548 goto out;
3549
3550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3551 if (!msg) {
3552 err = -ENOBUFS;
3553 goto out;
3554 }
3555
3556 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3557 NL80211_CMD_GET_REG);
3558 if (!hdr)
3559 goto put_failure;
3560
3561 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3562 cfg80211_regdomain->alpha2);
3563 if (cfg80211_regdomain->dfs_region)
3564 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3565 cfg80211_regdomain->dfs_region);
3566
3567 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3568 if (!nl_reg_rules)
3569 goto nla_put_failure;
3570
3571 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3572 struct nlattr *nl_reg_rule;
3573 const struct ieee80211_reg_rule *reg_rule;
3574 const struct ieee80211_freq_range *freq_range;
3575 const struct ieee80211_power_rule *power_rule;
3576
3577 reg_rule = &cfg80211_regdomain->reg_rules[i];
3578 freq_range = &reg_rule->freq_range;
3579 power_rule = &reg_rule->power_rule;
3580
3581 nl_reg_rule = nla_nest_start(msg, i);
3582 if (!nl_reg_rule)
3583 goto nla_put_failure;
3584
3585 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3586 reg_rule->flags);
3587 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3588 freq_range->start_freq_khz);
3589 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3590 freq_range->end_freq_khz);
3591 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3592 freq_range->max_bandwidth_khz);
3593 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3594 power_rule->max_antenna_gain);
3595 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3596 power_rule->max_eirp);
3597
3598 nla_nest_end(msg, nl_reg_rule);
3599 }
3600
3601 nla_nest_end(msg, nl_reg_rules);
3602
3603 genlmsg_end(msg, hdr);
3604 err = genlmsg_reply(msg, info);
3605 goto out;
3606
3607 nla_put_failure:
3608 genlmsg_cancel(msg, hdr);
3609 put_failure:
3610 nlmsg_free(msg);
3611 err = -EMSGSIZE;
3612 out:
3613 mutex_unlock(&cfg80211_mutex);
3614 return err;
3615 }
3616
3617 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3618 {
3619 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3620 struct nlattr *nl_reg_rule;
3621 char *alpha2 = NULL;
3622 int rem_reg_rules = 0, r = 0;
3623 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3624 u8 dfs_region = 0;
3625 struct ieee80211_regdomain *rd = NULL;
3626
3627 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3628 return -EINVAL;
3629
3630 if (!info->attrs[NL80211_ATTR_REG_RULES])
3631 return -EINVAL;
3632
3633 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3634
3635 if (info->attrs[NL80211_ATTR_DFS_REGION])
3636 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3637
3638 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3639 rem_reg_rules) {
3640 num_rules++;
3641 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3642 return -EINVAL;
3643 }
3644
3645 mutex_lock(&cfg80211_mutex);
3646
3647 if (!reg_is_valid_request(alpha2)) {
3648 r = -EINVAL;
3649 goto bad_reg;
3650 }
3651
3652 size_of_regd = sizeof(struct ieee80211_regdomain) +
3653 (num_rules * sizeof(struct ieee80211_reg_rule));
3654
3655 rd = kzalloc(size_of_regd, GFP_KERNEL);
3656 if (!rd) {
3657 r = -ENOMEM;
3658 goto bad_reg;
3659 }
3660
3661 rd->n_reg_rules = num_rules;
3662 rd->alpha2[0] = alpha2[0];
3663 rd->alpha2[1] = alpha2[1];
3664
3665 /*
3666 * Disable DFS master mode if the DFS region was
3667 * not supported or known on this kernel.
3668 */
3669 if (reg_supported_dfs_region(dfs_region))
3670 rd->dfs_region = dfs_region;
3671
3672 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3673 rem_reg_rules) {
3674 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3675 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3676 reg_rule_policy);
3677 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3678 if (r)
3679 goto bad_reg;
3680
3681 rule_idx++;
3682
3683 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3684 r = -EINVAL;
3685 goto bad_reg;
3686 }
3687 }
3688
3689 BUG_ON(rule_idx != num_rules);
3690
3691 r = set_regdom(rd);
3692
3693 mutex_unlock(&cfg80211_mutex);
3694
3695 return r;
3696
3697 bad_reg:
3698 mutex_unlock(&cfg80211_mutex);
3699 kfree(rd);
3700 return r;
3701 }
3702
3703 static int validate_scan_freqs(struct nlattr *freqs)
3704 {
3705 struct nlattr *attr1, *attr2;
3706 int n_channels = 0, tmp1, tmp2;
3707
3708 nla_for_each_nested(attr1, freqs, tmp1) {
3709 n_channels++;
3710 /*
3711 * Some hardware has a limited channel list for
3712 * scanning, and it is pretty much nonsensical
3713 * to scan for a channel twice, so disallow that
3714 * and don't require drivers to check that the
3715 * channel list they get isn't longer than what
3716 * they can scan, as long as they can scan all
3717 * the channels they registered at once.
3718 */
3719 nla_for_each_nested(attr2, freqs, tmp2)
3720 if (attr1 != attr2 &&
3721 nla_get_u32(attr1) == nla_get_u32(attr2))
3722 return 0;
3723 }
3724
3725 return n_channels;
3726 }
3727
3728 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3729 {
3730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3731 struct net_device *dev = info->user_ptr[1];
3732 struct cfg80211_scan_request *request;
3733 struct nlattr *attr;
3734 struct wiphy *wiphy;
3735 int err, tmp, n_ssids = 0, n_channels, i;
3736 size_t ie_len;
3737
3738 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3739 return -EINVAL;
3740
3741 wiphy = &rdev->wiphy;
3742
3743 if (!rdev->ops->scan)
3744 return -EOPNOTSUPP;
3745
3746 if (rdev->scan_req)
3747 return -EBUSY;
3748
3749 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3750 n_channels = validate_scan_freqs(
3751 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3752 if (!n_channels)
3753 return -EINVAL;
3754 } else {
3755 enum ieee80211_band band;
3756 n_channels = 0;
3757
3758 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3759 if (wiphy->bands[band])
3760 n_channels += wiphy->bands[band]->n_channels;
3761 }
3762
3763 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3764 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3765 n_ssids++;
3766
3767 if (n_ssids > wiphy->max_scan_ssids)
3768 return -EINVAL;
3769
3770 if (info->attrs[NL80211_ATTR_IE])
3771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3772 else
3773 ie_len = 0;
3774
3775 if (ie_len > wiphy->max_scan_ie_len)
3776 return -EINVAL;
3777
3778 request = kzalloc(sizeof(*request)
3779 + sizeof(*request->ssids) * n_ssids
3780 + sizeof(*request->channels) * n_channels
3781 + ie_len, GFP_KERNEL);
3782 if (!request)
3783 return -ENOMEM;
3784
3785 if (n_ssids)
3786 request->ssids = (void *)&request->channels[n_channels];
3787 request->n_ssids = n_ssids;
3788 if (ie_len) {
3789 if (request->ssids)
3790 request->ie = (void *)(request->ssids + n_ssids);
3791 else
3792 request->ie = (void *)(request->channels + n_channels);
3793 }
3794
3795 i = 0;
3796 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3797 /* user specified, bail out if channel not found */
3798 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3799 struct ieee80211_channel *chan;
3800
3801 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3802
3803 if (!chan) {
3804 err = -EINVAL;
3805 goto out_free;
3806 }
3807
3808 /* ignore disabled channels */
3809 if (chan->flags & IEEE80211_CHAN_DISABLED)
3810 continue;
3811
3812 request->channels[i] = chan;
3813 i++;
3814 }
3815 } else {
3816 enum ieee80211_band band;
3817
3818 /* all channels */
3819 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3820 int j;
3821 if (!wiphy->bands[band])
3822 continue;
3823 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3824 struct ieee80211_channel *chan;
3825
3826 chan = &wiphy->bands[band]->channels[j];
3827
3828 if (chan->flags & IEEE80211_CHAN_DISABLED)
3829 continue;
3830
3831 request->channels[i] = chan;
3832 i++;
3833 }
3834 }
3835 }
3836
3837 if (!i) {
3838 err = -EINVAL;
3839 goto out_free;
3840 }
3841
3842 request->n_channels = i;
3843
3844 i = 0;
3845 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3846 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3847 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3848 err = -EINVAL;
3849 goto out_free;
3850 }
3851 request->ssids[i].ssid_len = nla_len(attr);
3852 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3853 i++;
3854 }
3855 }
3856
3857 if (info->attrs[NL80211_ATTR_IE]) {
3858 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3859 memcpy((void *)request->ie,
3860 nla_data(info->attrs[NL80211_ATTR_IE]),
3861 request->ie_len);
3862 }
3863
3864 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3865 if (wiphy->bands[i])
3866 request->rates[i] =
3867 (1 << wiphy->bands[i]->n_bitrates) - 1;
3868
3869 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3870 nla_for_each_nested(attr,
3871 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3872 tmp) {
3873 enum ieee80211_band band = nla_type(attr);
3874
3875 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3876 err = -EINVAL;
3877 goto out_free;
3878 }
3879 err = ieee80211_get_ratemask(wiphy->bands[band],
3880 nla_data(attr),
3881 nla_len(attr),
3882 &request->rates[band]);
3883 if (err)
3884 goto out_free;
3885 }
3886 }
3887
3888 request->no_cck =
3889 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3890
3891 request->dev = dev;
3892 request->wiphy = &rdev->wiphy;
3893
3894 rdev->scan_req = request;
3895 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3896
3897 if (!err) {
3898 nl80211_send_scan_start(rdev, dev);
3899 dev_hold(dev);
3900 } else {
3901 out_free:
3902 rdev->scan_req = NULL;
3903 kfree(request);
3904 }
3905
3906 return err;
3907 }
3908
3909 static int nl80211_start_sched_scan(struct sk_buff *skb,
3910 struct genl_info *info)
3911 {
3912 struct cfg80211_sched_scan_request *request;
3913 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3914 struct net_device *dev = info->user_ptr[1];
3915 struct nlattr *attr;
3916 struct wiphy *wiphy;
3917 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3918 u32 interval;
3919 enum ieee80211_band band;
3920 size_t ie_len;
3921 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3922
3923 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3924 !rdev->ops->sched_scan_start)
3925 return -EOPNOTSUPP;
3926
3927 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3928 return -EINVAL;
3929
3930 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3931 return -EINVAL;
3932
3933 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3934 if (interval == 0)
3935 return -EINVAL;
3936
3937 wiphy = &rdev->wiphy;
3938
3939 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3940 n_channels = validate_scan_freqs(
3941 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3942 if (!n_channels)
3943 return -EINVAL;
3944 } else {
3945 n_channels = 0;
3946
3947 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3948 if (wiphy->bands[band])
3949 n_channels += wiphy->bands[band]->n_channels;
3950 }
3951
3952 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3953 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3954 tmp)
3955 n_ssids++;
3956
3957 if (n_ssids > wiphy->max_sched_scan_ssids)
3958 return -EINVAL;
3959
3960 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3961 nla_for_each_nested(attr,
3962 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3963 tmp)
3964 n_match_sets++;
3965
3966 if (n_match_sets > wiphy->max_match_sets)
3967 return -EINVAL;
3968
3969 if (info->attrs[NL80211_ATTR_IE])
3970 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3971 else
3972 ie_len = 0;
3973
3974 if (ie_len > wiphy->max_sched_scan_ie_len)
3975 return -EINVAL;
3976
3977 mutex_lock(&rdev->sched_scan_mtx);
3978
3979 if (rdev->sched_scan_req) {
3980 err = -EINPROGRESS;
3981 goto out;
3982 }
3983
3984 request = kzalloc(sizeof(*request)
3985 + sizeof(*request->ssids) * n_ssids
3986 + sizeof(*request->match_sets) * n_match_sets
3987 + sizeof(*request->channels) * n_channels
3988 + ie_len, GFP_KERNEL);
3989 if (!request) {
3990 err = -ENOMEM;
3991 goto out;
3992 }
3993
3994 if (n_ssids)
3995 request->ssids = (void *)&request->channels[n_channels];
3996 request->n_ssids = n_ssids;
3997 if (ie_len) {
3998 if (request->ssids)
3999 request->ie = (void *)(request->ssids + n_ssids);
4000 else
4001 request->ie = (void *)(request->channels + n_channels);
4002 }
4003
4004 if (n_match_sets) {
4005 if (request->ie)
4006 request->match_sets = (void *)(request->ie + ie_len);
4007 else if (request->ssids)
4008 request->match_sets =
4009 (void *)(request->ssids + n_ssids);
4010 else
4011 request->match_sets =
4012 (void *)(request->channels + n_channels);
4013 }
4014 request->n_match_sets = n_match_sets;
4015
4016 i = 0;
4017 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4018 /* user specified, bail out if channel not found */
4019 nla_for_each_nested(attr,
4020 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4021 tmp) {
4022 struct ieee80211_channel *chan;
4023
4024 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4025
4026 if (!chan) {
4027 err = -EINVAL;
4028 goto out_free;
4029 }
4030
4031 /* ignore disabled channels */
4032 if (chan->flags & IEEE80211_CHAN_DISABLED)
4033 continue;
4034
4035 request->channels[i] = chan;
4036 i++;
4037 }
4038 } else {
4039 /* all channels */
4040 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4041 int j;
4042 if (!wiphy->bands[band])
4043 continue;
4044 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4045 struct ieee80211_channel *chan;
4046
4047 chan = &wiphy->bands[band]->channels[j];
4048
4049 if (chan->flags & IEEE80211_CHAN_DISABLED)
4050 continue;
4051
4052 request->channels[i] = chan;
4053 i++;
4054 }
4055 }
4056 }
4057
4058 if (!i) {
4059 err = -EINVAL;
4060 goto out_free;
4061 }
4062
4063 request->n_channels = i;
4064
4065 i = 0;
4066 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4067 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4068 tmp) {
4069 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4070 err = -EINVAL;
4071 goto out_free;
4072 }
4073 request->ssids[i].ssid_len = nla_len(attr);
4074 memcpy(request->ssids[i].ssid, nla_data(attr),
4075 nla_len(attr));
4076 i++;
4077 }
4078 }
4079
4080 i = 0;
4081 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4082 nla_for_each_nested(attr,
4083 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4084 tmp) {
4085 struct nlattr *ssid;
4086
4087 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4088 nla_data(attr), nla_len(attr),
4089 nl80211_match_policy);
4090 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
4091 if (ssid) {
4092 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4093 err = -EINVAL;
4094 goto out_free;
4095 }
4096 memcpy(request->match_sets[i].ssid.ssid,
4097 nla_data(ssid), nla_len(ssid));
4098 request->match_sets[i].ssid.ssid_len =
4099 nla_len(ssid);
4100 }
4101 i++;
4102 }
4103 }
4104
4105 if (info->attrs[NL80211_ATTR_IE]) {
4106 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4107 memcpy((void *)request->ie,
4108 nla_data(info->attrs[NL80211_ATTR_IE]),
4109 request->ie_len);
4110 }
4111
4112 request->dev = dev;
4113 request->wiphy = &rdev->wiphy;
4114 request->interval = interval;
4115
4116 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4117 if (!err) {
4118 rdev->sched_scan_req = request;
4119 nl80211_send_sched_scan(rdev, dev,
4120 NL80211_CMD_START_SCHED_SCAN);
4121 goto out;
4122 }
4123
4124 out_free:
4125 kfree(request);
4126 out:
4127 mutex_unlock(&rdev->sched_scan_mtx);
4128 return err;
4129 }
4130
4131 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4132 struct genl_info *info)
4133 {
4134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4135 int err;
4136
4137 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4138 !rdev->ops->sched_scan_stop)
4139 return -EOPNOTSUPP;
4140
4141 mutex_lock(&rdev->sched_scan_mtx);
4142 err = __cfg80211_stop_sched_scan(rdev, false);
4143 mutex_unlock(&rdev->sched_scan_mtx);
4144
4145 return err;
4146 }
4147
4148 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4149 u32 seq, int flags,
4150 struct cfg80211_registered_device *rdev,
4151 struct wireless_dev *wdev,
4152 struct cfg80211_internal_bss *intbss)
4153 {
4154 struct cfg80211_bss *res = &intbss->pub;
4155 void *hdr;
4156 struct nlattr *bss;
4157
4158 ASSERT_WDEV_LOCK(wdev);
4159
4160 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4161 NL80211_CMD_NEW_SCAN_RESULTS);
4162 if (!hdr)
4163 return -1;
4164
4165 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4166
4167 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4168 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4169
4170 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4171 if (!bss)
4172 goto nla_put_failure;
4173 if (!is_zero_ether_addr(res->bssid))
4174 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4175 if (res->information_elements && res->len_information_elements)
4176 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4177 res->len_information_elements,
4178 res->information_elements);
4179 if (res->beacon_ies && res->len_beacon_ies &&
4180 res->beacon_ies != res->information_elements)
4181 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4182 res->len_beacon_ies, res->beacon_ies);
4183 if (res->tsf)
4184 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4185 if (res->beacon_interval)
4186 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4187 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4188 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4189 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4190 jiffies_to_msecs(jiffies - intbss->ts));
4191
4192 switch (rdev->wiphy.signal_type) {
4193 case CFG80211_SIGNAL_TYPE_MBM:
4194 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4195 break;
4196 case CFG80211_SIGNAL_TYPE_UNSPEC:
4197 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4198 break;
4199 default:
4200 break;
4201 }
4202
4203 switch (wdev->iftype) {
4204 case NL80211_IFTYPE_P2P_CLIENT:
4205 case NL80211_IFTYPE_STATION:
4206 if (intbss == wdev->current_bss)
4207 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4208 NL80211_BSS_STATUS_ASSOCIATED);
4209 break;
4210 case NL80211_IFTYPE_ADHOC:
4211 if (intbss == wdev->current_bss)
4212 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4213 NL80211_BSS_STATUS_IBSS_JOINED);
4214 break;
4215 default:
4216 break;
4217 }
4218
4219 nla_nest_end(msg, bss);
4220
4221 return genlmsg_end(msg, hdr);
4222
4223 nla_put_failure:
4224 genlmsg_cancel(msg, hdr);
4225 return -EMSGSIZE;
4226 }
4227
4228 static int nl80211_dump_scan(struct sk_buff *skb,
4229 struct netlink_callback *cb)
4230 {
4231 struct cfg80211_registered_device *rdev;
4232 struct net_device *dev;
4233 struct cfg80211_internal_bss *scan;
4234 struct wireless_dev *wdev;
4235 int start = cb->args[1], idx = 0;
4236 int err;
4237
4238 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4239 if (err)
4240 return err;
4241
4242 wdev = dev->ieee80211_ptr;
4243
4244 wdev_lock(wdev);
4245 spin_lock_bh(&rdev->bss_lock);
4246 cfg80211_bss_expire(rdev);
4247
4248 cb->seq = rdev->bss_generation;
4249
4250 list_for_each_entry(scan, &rdev->bss_list, list) {
4251 if (++idx <= start)
4252 continue;
4253 if (nl80211_send_bss(skb, cb,
4254 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4255 rdev, wdev, scan) < 0) {
4256 idx--;
4257 break;
4258 }
4259 }
4260
4261 spin_unlock_bh(&rdev->bss_lock);
4262 wdev_unlock(wdev);
4263
4264 cb->args[1] = idx;
4265 nl80211_finish_netdev_dump(rdev);
4266
4267 return skb->len;
4268 }
4269
4270 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4271 int flags, struct net_device *dev,
4272 struct survey_info *survey)
4273 {
4274 void *hdr;
4275 struct nlattr *infoattr;
4276
4277 hdr = nl80211hdr_put(msg, pid, seq, flags,
4278 NL80211_CMD_NEW_SURVEY_RESULTS);
4279 if (!hdr)
4280 return -ENOMEM;
4281
4282 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4283
4284 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4285 if (!infoattr)
4286 goto nla_put_failure;
4287
4288 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4289 survey->channel->center_freq);
4290 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4291 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4292 survey->noise);
4293 if (survey->filled & SURVEY_INFO_IN_USE)
4294 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4295 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4296 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4297 survey->channel_time);
4298 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4299 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4300 survey->channel_time_busy);
4301 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4302 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4303 survey->channel_time_ext_busy);
4304 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4305 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4306 survey->channel_time_rx);
4307 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4308 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4309 survey->channel_time_tx);
4310
4311 nla_nest_end(msg, infoattr);
4312
4313 return genlmsg_end(msg, hdr);
4314
4315 nla_put_failure:
4316 genlmsg_cancel(msg, hdr);
4317 return -EMSGSIZE;
4318 }
4319
4320 static int nl80211_dump_survey(struct sk_buff *skb,
4321 struct netlink_callback *cb)
4322 {
4323 struct survey_info survey;
4324 struct cfg80211_registered_device *dev;
4325 struct net_device *netdev;
4326 int survey_idx = cb->args[1];
4327 int res;
4328
4329 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4330 if (res)
4331 return res;
4332
4333 if (!dev->ops->dump_survey) {
4334 res = -EOPNOTSUPP;
4335 goto out_err;
4336 }
4337
4338 while (1) {
4339 struct ieee80211_channel *chan;
4340
4341 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4342 &survey);
4343 if (res == -ENOENT)
4344 break;
4345 if (res)
4346 goto out_err;
4347
4348 /* Survey without a channel doesn't make sense */
4349 if (!survey.channel) {
4350 res = -EINVAL;
4351 goto out;
4352 }
4353
4354 chan = ieee80211_get_channel(&dev->wiphy,
4355 survey.channel->center_freq);
4356 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4357 survey_idx++;
4358 continue;
4359 }
4360
4361 if (nl80211_send_survey(skb,
4362 NETLINK_CB(cb->skb).pid,
4363 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4364 netdev,
4365 &survey) < 0)
4366 goto out;
4367 survey_idx++;
4368 }
4369
4370 out:
4371 cb->args[1] = survey_idx;
4372 res = skb->len;
4373 out_err:
4374 nl80211_finish_netdev_dump(dev);
4375 return res;
4376 }
4377
4378 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4379 {
4380 return auth_type <= NL80211_AUTHTYPE_MAX;
4381 }
4382
4383 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4384 {
4385 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4386 NL80211_WPA_VERSION_2));
4387 }
4388
4389 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4390 {
4391 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4392 struct net_device *dev = info->user_ptr[1];
4393 struct ieee80211_channel *chan;
4394 const u8 *bssid, *ssid, *ie = NULL;
4395 int err, ssid_len, ie_len = 0;
4396 enum nl80211_auth_type auth_type;
4397 struct key_parse key;
4398 bool local_state_change;
4399
4400 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4401 return -EINVAL;
4402
4403 if (!info->attrs[NL80211_ATTR_MAC])
4404 return -EINVAL;
4405
4406 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4407 return -EINVAL;
4408
4409 if (!info->attrs[NL80211_ATTR_SSID])
4410 return -EINVAL;
4411
4412 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4413 return -EINVAL;
4414
4415 err = nl80211_parse_key(info, &key);
4416 if (err)
4417 return err;
4418
4419 if (key.idx >= 0) {
4420 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4421 return -EINVAL;
4422 if (!key.p.key || !key.p.key_len)
4423 return -EINVAL;
4424 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4425 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4426 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4427 key.p.key_len != WLAN_KEY_LEN_WEP104))
4428 return -EINVAL;
4429 if (key.idx > 4)
4430 return -EINVAL;
4431 } else {
4432 key.p.key_len = 0;
4433 key.p.key = NULL;
4434 }
4435
4436 if (key.idx >= 0) {
4437 int i;
4438 bool ok = false;
4439 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4440 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4441 ok = true;
4442 break;
4443 }
4444 }
4445 if (!ok)
4446 return -EINVAL;
4447 }
4448
4449 if (!rdev->ops->auth)
4450 return -EOPNOTSUPP;
4451
4452 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4453 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4454 return -EOPNOTSUPP;
4455
4456 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4457 chan = ieee80211_get_channel(&rdev->wiphy,
4458 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4459 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4460 return -EINVAL;
4461
4462 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4463 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4464
4465 if (info->attrs[NL80211_ATTR_IE]) {
4466 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4467 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4468 }
4469
4470 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4471 if (!nl80211_valid_auth_type(auth_type))
4472 return -EINVAL;
4473
4474 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4475
4476 /*
4477 * Since we no longer track auth state, ignore
4478 * requests to only change local state.
4479 */
4480 if (local_state_change)
4481 return 0;
4482
4483 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4484 ssid, ssid_len, ie, ie_len,
4485 key.p.key, key.p.key_len, key.idx);
4486 }
4487
4488 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4489 struct genl_info *info,
4490 struct cfg80211_crypto_settings *settings,
4491 int cipher_limit)
4492 {
4493 memset(settings, 0, sizeof(*settings));
4494
4495 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4496
4497 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4498 u16 proto;
4499 proto = nla_get_u16(
4500 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4501 settings->control_port_ethertype = cpu_to_be16(proto);
4502 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4503 proto != ETH_P_PAE)
4504 return -EINVAL;
4505 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4506 settings->control_port_no_encrypt = true;
4507 } else
4508 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4509
4510 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4511 void *data;
4512 int len, i;
4513
4514 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4515 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4516 settings->n_ciphers_pairwise = len / sizeof(u32);
4517
4518 if (len % sizeof(u32))
4519 return -EINVAL;
4520
4521 if (settings->n_ciphers_pairwise > cipher_limit)
4522 return -EINVAL;
4523
4524 memcpy(settings->ciphers_pairwise, data, len);
4525
4526 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4527 if (!cfg80211_supported_cipher_suite(
4528 &rdev->wiphy,
4529 settings->ciphers_pairwise[i]))
4530 return -EINVAL;
4531 }
4532
4533 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4534 settings->cipher_group =
4535 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4536 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4537 settings->cipher_group))
4538 return -EINVAL;
4539 }
4540
4541 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4542 settings->wpa_versions =
4543 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4544 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4545 return -EINVAL;
4546 }
4547
4548 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4549 void *data;
4550 int len;
4551
4552 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4553 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4554 settings->n_akm_suites = len / sizeof(u32);
4555
4556 if (len % sizeof(u32))
4557 return -EINVAL;
4558
4559 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4560 return -EINVAL;
4561
4562 memcpy(settings->akm_suites, data, len);
4563 }
4564
4565 return 0;
4566 }
4567
4568 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4569 {
4570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4571 struct net_device *dev = info->user_ptr[1];
4572 struct cfg80211_crypto_settings crypto;
4573 struct ieee80211_channel *chan;
4574 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4575 int err, ssid_len, ie_len = 0;
4576 bool use_mfp = false;
4577 u32 flags = 0;
4578 struct ieee80211_ht_cap *ht_capa = NULL;
4579 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4580
4581 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4582 return -EINVAL;
4583
4584 if (!info->attrs[NL80211_ATTR_MAC] ||
4585 !info->attrs[NL80211_ATTR_SSID] ||
4586 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4587 return -EINVAL;
4588
4589 if (!rdev->ops->assoc)
4590 return -EOPNOTSUPP;
4591
4592 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4593 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4594 return -EOPNOTSUPP;
4595
4596 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4597
4598 chan = ieee80211_get_channel(&rdev->wiphy,
4599 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4600 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4601 return -EINVAL;
4602
4603 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4604 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4605
4606 if (info->attrs[NL80211_ATTR_IE]) {
4607 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4608 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4609 }
4610
4611 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4612 enum nl80211_mfp mfp =
4613 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4614 if (mfp == NL80211_MFP_REQUIRED)
4615 use_mfp = true;
4616 else if (mfp != NL80211_MFP_NO)
4617 return -EINVAL;
4618 }
4619
4620 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4621 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4622
4623 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4624 flags |= ASSOC_REQ_DISABLE_HT;
4625
4626 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4627 ht_capa_mask =
4628 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4629
4630 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4631 if (!ht_capa_mask)
4632 return -EINVAL;
4633 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4634 }
4635
4636 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4637 if (!err)
4638 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4639 ssid, ssid_len, ie, ie_len, use_mfp,
4640 &crypto, flags, ht_capa,
4641 ht_capa_mask);
4642
4643 return err;
4644 }
4645
4646 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4647 {
4648 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4649 struct net_device *dev = info->user_ptr[1];
4650 const u8 *ie = NULL, *bssid;
4651 int ie_len = 0;
4652 u16 reason_code;
4653 bool local_state_change;
4654
4655 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4656 return -EINVAL;
4657
4658 if (!info->attrs[NL80211_ATTR_MAC])
4659 return -EINVAL;
4660
4661 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4662 return -EINVAL;
4663
4664 if (!rdev->ops->deauth)
4665 return -EOPNOTSUPP;
4666
4667 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4668 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4669 return -EOPNOTSUPP;
4670
4671 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672
4673 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4674 if (reason_code == 0) {
4675 /* Reason Code 0 is reserved */
4676 return -EINVAL;
4677 }
4678
4679 if (info->attrs[NL80211_ATTR_IE]) {
4680 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4681 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4682 }
4683
4684 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4685
4686 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4687 local_state_change);
4688 }
4689
4690 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4691 {
4692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4693 struct net_device *dev = info->user_ptr[1];
4694 const u8 *ie = NULL, *bssid;
4695 int ie_len = 0;
4696 u16 reason_code;
4697 bool local_state_change;
4698
4699 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4700 return -EINVAL;
4701
4702 if (!info->attrs[NL80211_ATTR_MAC])
4703 return -EINVAL;
4704
4705 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4706 return -EINVAL;
4707
4708 if (!rdev->ops->disassoc)
4709 return -EOPNOTSUPP;
4710
4711 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4712 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4713 return -EOPNOTSUPP;
4714
4715 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4716
4717 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4718 if (reason_code == 0) {
4719 /* Reason Code 0 is reserved */
4720 return -EINVAL;
4721 }
4722
4723 if (info->attrs[NL80211_ATTR_IE]) {
4724 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4725 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4726 }
4727
4728 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4729
4730 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4731 local_state_change);
4732 }
4733
4734 static bool
4735 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4736 int mcast_rate[IEEE80211_NUM_BANDS],
4737 int rateval)
4738 {
4739 struct wiphy *wiphy = &rdev->wiphy;
4740 bool found = false;
4741 int band, i;
4742
4743 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4744 struct ieee80211_supported_band *sband;
4745
4746 sband = wiphy->bands[band];
4747 if (!sband)
4748 continue;
4749
4750 for (i = 0; i < sband->n_bitrates; i++) {
4751 if (sband->bitrates[i].bitrate == rateval) {
4752 mcast_rate[band] = i + 1;
4753 found = true;
4754 break;
4755 }
4756 }
4757 }
4758
4759 return found;
4760 }
4761
4762 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4763 {
4764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4765 struct net_device *dev = info->user_ptr[1];
4766 struct cfg80211_ibss_params ibss;
4767 struct wiphy *wiphy;
4768 struct cfg80211_cached_keys *connkeys = NULL;
4769 int err;
4770
4771 memset(&ibss, 0, sizeof(ibss));
4772
4773 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4774 return -EINVAL;
4775
4776 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4777 !info->attrs[NL80211_ATTR_SSID] ||
4778 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4779 return -EINVAL;
4780
4781 ibss.beacon_interval = 100;
4782
4783 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4784 ibss.beacon_interval =
4785 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4786 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4787 return -EINVAL;
4788 }
4789
4790 if (!rdev->ops->join_ibss)
4791 return -EOPNOTSUPP;
4792
4793 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4794 return -EOPNOTSUPP;
4795
4796 wiphy = &rdev->wiphy;
4797
4798 if (info->attrs[NL80211_ATTR_MAC]) {
4799 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4800
4801 if (!is_valid_ether_addr(ibss.bssid))
4802 return -EINVAL;
4803 }
4804 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4805 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4806
4807 if (info->attrs[NL80211_ATTR_IE]) {
4808 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4809 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4810 }
4811
4812 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4813 enum nl80211_channel_type channel_type;
4814
4815 channel_type = nla_get_u32(
4816 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4817 if (channel_type != NL80211_CHAN_NO_HT &&
4818 channel_type != NL80211_CHAN_HT20 &&
4819 channel_type != NL80211_CHAN_HT40MINUS &&
4820 channel_type != NL80211_CHAN_HT40PLUS)
4821 return -EINVAL;
4822
4823 if (channel_type != NL80211_CHAN_NO_HT &&
4824 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
4825 return -EINVAL;
4826
4827 ibss.channel_type = channel_type;
4828 } else {
4829 ibss.channel_type = NL80211_CHAN_NO_HT;
4830 }
4831
4832 ibss.channel = rdev_freq_to_chan(rdev,
4833 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
4834 ibss.channel_type);
4835 if (!ibss.channel ||
4836 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4837 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4838 return -EINVAL;
4839
4840 /* Both channels should be able to initiate communication */
4841 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
4842 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
4843 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
4844 ibss.channel_type))
4845 return -EINVAL;
4846
4847 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4848 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4849
4850 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4851 u8 *rates =
4852 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4853 int n_rates =
4854 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4855 struct ieee80211_supported_band *sband =
4856 wiphy->bands[ibss.channel->band];
4857
4858 err = ieee80211_get_ratemask(sband, rates, n_rates,
4859 &ibss.basic_rates);
4860 if (err)
4861 return err;
4862 }
4863
4864 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4865 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4866 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4867 return -EINVAL;
4868
4869 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4870 connkeys = nl80211_parse_connkeys(rdev,
4871 info->attrs[NL80211_ATTR_KEYS]);
4872 if (IS_ERR(connkeys))
4873 return PTR_ERR(connkeys);
4874 }
4875
4876 ibss.control_port =
4877 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
4878
4879 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4880 if (err)
4881 kfree(connkeys);
4882 return err;
4883 }
4884
4885 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4886 {
4887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4888 struct net_device *dev = info->user_ptr[1];
4889
4890 if (!rdev->ops->leave_ibss)
4891 return -EOPNOTSUPP;
4892
4893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4894 return -EOPNOTSUPP;
4895
4896 return cfg80211_leave_ibss(rdev, dev, false);
4897 }
4898
4899 #ifdef CONFIG_NL80211_TESTMODE
4900 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4901 .name = "testmode",
4902 };
4903
4904 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4905 {
4906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4907 int err;
4908
4909 if (!info->attrs[NL80211_ATTR_TESTDATA])
4910 return -EINVAL;
4911
4912 err = -EOPNOTSUPP;
4913 if (rdev->ops->testmode_cmd) {
4914 rdev->testmode_info = info;
4915 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4916 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4917 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4918 rdev->testmode_info = NULL;
4919 }
4920
4921 return err;
4922 }
4923
4924 static int nl80211_testmode_dump(struct sk_buff *skb,
4925 struct netlink_callback *cb)
4926 {
4927 struct cfg80211_registered_device *rdev;
4928 int err;
4929 long phy_idx;
4930 void *data = NULL;
4931 int data_len = 0;
4932
4933 if (cb->args[0]) {
4934 /*
4935 * 0 is a valid index, but not valid for args[0],
4936 * so we need to offset by 1.
4937 */
4938 phy_idx = cb->args[0] - 1;
4939 } else {
4940 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4941 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4942 nl80211_policy);
4943 if (err)
4944 return err;
4945 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
4946 phy_idx = nla_get_u32(
4947 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4948 } else {
4949 struct net_device *netdev;
4950
4951 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
4952 nl80211_fam.attrbuf,
4953 &rdev, &netdev);
4954 if (err)
4955 return err;
4956 dev_put(netdev);
4957 phy_idx = rdev->wiphy_idx;
4958 cfg80211_unlock_rdev(rdev);
4959 }
4960 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4961 cb->args[1] =
4962 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4963 }
4964
4965 if (cb->args[1]) {
4966 data = nla_data((void *)cb->args[1]);
4967 data_len = nla_len((void *)cb->args[1]);
4968 }
4969
4970 mutex_lock(&cfg80211_mutex);
4971 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4972 if (!rdev) {
4973 mutex_unlock(&cfg80211_mutex);
4974 return -ENOENT;
4975 }
4976 cfg80211_lock_rdev(rdev);
4977 mutex_unlock(&cfg80211_mutex);
4978
4979 if (!rdev->ops->testmode_dump) {
4980 err = -EOPNOTSUPP;
4981 goto out_err;
4982 }
4983
4984 while (1) {
4985 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4986 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4987 NL80211_CMD_TESTMODE);
4988 struct nlattr *tmdata;
4989
4990 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx) < 0) {
4991 genlmsg_cancel(skb, hdr);
4992 break;
4993 }
4994
4995 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4996 if (!tmdata) {
4997 genlmsg_cancel(skb, hdr);
4998 break;
4999 }
5000 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5001 data, data_len);
5002 nla_nest_end(skb, tmdata);
5003
5004 if (err == -ENOBUFS || err == -ENOENT) {
5005 genlmsg_cancel(skb, hdr);
5006 break;
5007 } else if (err) {
5008 genlmsg_cancel(skb, hdr);
5009 goto out_err;
5010 }
5011
5012 genlmsg_end(skb, hdr);
5013 }
5014
5015 err = skb->len;
5016 /* see above */
5017 cb->args[0] = phy_idx + 1;
5018 out_err:
5019 cfg80211_unlock_rdev(rdev);
5020 return err;
5021 }
5022
5023 static struct sk_buff *
5024 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5025 int approxlen, u32 pid, u32 seq, gfp_t gfp)
5026 {
5027 struct sk_buff *skb;
5028 void *hdr;
5029 struct nlattr *data;
5030
5031 skb = nlmsg_new(approxlen + 100, gfp);
5032 if (!skb)
5033 return NULL;
5034
5035 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5036 if (!hdr) {
5037 kfree_skb(skb);
5038 return NULL;
5039 }
5040
5041 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5042 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5043
5044 ((void **)skb->cb)[0] = rdev;
5045 ((void **)skb->cb)[1] = hdr;
5046 ((void **)skb->cb)[2] = data;
5047
5048 return skb;
5049
5050 nla_put_failure:
5051 kfree_skb(skb);
5052 return NULL;
5053 }
5054
5055 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5056 int approxlen)
5057 {
5058 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5059
5060 if (WARN_ON(!rdev->testmode_info))
5061 return NULL;
5062
5063 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5064 rdev->testmode_info->snd_pid,
5065 rdev->testmode_info->snd_seq,
5066 GFP_KERNEL);
5067 }
5068 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5069
5070 int cfg80211_testmode_reply(struct sk_buff *skb)
5071 {
5072 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5073 void *hdr = ((void **)skb->cb)[1];
5074 struct nlattr *data = ((void **)skb->cb)[2];
5075
5076 if (WARN_ON(!rdev->testmode_info)) {
5077 kfree_skb(skb);
5078 return -EINVAL;
5079 }
5080
5081 nla_nest_end(skb, data);
5082 genlmsg_end(skb, hdr);
5083 return genlmsg_reply(skb, rdev->testmode_info);
5084 }
5085 EXPORT_SYMBOL(cfg80211_testmode_reply);
5086
5087 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5088 int approxlen, gfp_t gfp)
5089 {
5090 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5091
5092 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5093 }
5094 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5095
5096 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5097 {
5098 void *hdr = ((void **)skb->cb)[1];
5099 struct nlattr *data = ((void **)skb->cb)[2];
5100
5101 nla_nest_end(skb, data);
5102 genlmsg_end(skb, hdr);
5103 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5104 }
5105 EXPORT_SYMBOL(cfg80211_testmode_event);
5106 #endif
5107
5108 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5109 {
5110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5111 struct net_device *dev = info->user_ptr[1];
5112 struct cfg80211_connect_params connect;
5113 struct wiphy *wiphy;
5114 struct cfg80211_cached_keys *connkeys = NULL;
5115 int err;
5116
5117 memset(&connect, 0, sizeof(connect));
5118
5119 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5120 return -EINVAL;
5121
5122 if (!info->attrs[NL80211_ATTR_SSID] ||
5123 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5124 return -EINVAL;
5125
5126 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5127 connect.auth_type =
5128 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5129 if (!nl80211_valid_auth_type(connect.auth_type))
5130 return -EINVAL;
5131 } else
5132 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5133
5134 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5135
5136 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5137 NL80211_MAX_NR_CIPHER_SUITES);
5138 if (err)
5139 return err;
5140
5141 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5142 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5143 return -EOPNOTSUPP;
5144
5145 wiphy = &rdev->wiphy;
5146
5147 connect.bg_scan_period = -1;
5148 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5149 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5150 connect.bg_scan_period =
5151 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5152 }
5153
5154 if (info->attrs[NL80211_ATTR_MAC])
5155 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5156 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5157 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5158
5159 if (info->attrs[NL80211_ATTR_IE]) {
5160 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5161 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5162 }
5163
5164 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5165 connect.channel =
5166 ieee80211_get_channel(wiphy,
5167 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5168 if (!connect.channel ||
5169 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5170 return -EINVAL;
5171 }
5172
5173 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5174 connkeys = nl80211_parse_connkeys(rdev,
5175 info->attrs[NL80211_ATTR_KEYS]);
5176 if (IS_ERR(connkeys))
5177 return PTR_ERR(connkeys);
5178 }
5179
5180 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5181 connect.flags |= ASSOC_REQ_DISABLE_HT;
5182
5183 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5184 memcpy(&connect.ht_capa_mask,
5185 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5186 sizeof(connect.ht_capa_mask));
5187
5188 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5189 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5190 return -EINVAL;
5191 memcpy(&connect.ht_capa,
5192 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5193 sizeof(connect.ht_capa));
5194 }
5195
5196 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5197 if (err)
5198 kfree(connkeys);
5199 return err;
5200 }
5201
5202 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5203 {
5204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5205 struct net_device *dev = info->user_ptr[1];
5206 u16 reason;
5207
5208 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5209 reason = WLAN_REASON_DEAUTH_LEAVING;
5210 else
5211 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5212
5213 if (reason == 0)
5214 return -EINVAL;
5215
5216 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5217 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5218 return -EOPNOTSUPP;
5219
5220 return cfg80211_disconnect(rdev, dev, reason, true);
5221 }
5222
5223 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5224 {
5225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5226 struct net *net;
5227 int err;
5228 u32 pid;
5229
5230 if (!info->attrs[NL80211_ATTR_PID])
5231 return -EINVAL;
5232
5233 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5234
5235 net = get_net_ns_by_pid(pid);
5236 if (IS_ERR(net))
5237 return PTR_ERR(net);
5238
5239 err = 0;
5240
5241 /* check if anything to do */
5242 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5243 err = cfg80211_switch_netns(rdev, net);
5244
5245 put_net(net);
5246 return err;
5247 }
5248
5249 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5250 {
5251 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5252 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5253 struct cfg80211_pmksa *pmksa) = NULL;
5254 struct net_device *dev = info->user_ptr[1];
5255 struct cfg80211_pmksa pmksa;
5256
5257 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5258
5259 if (!info->attrs[NL80211_ATTR_MAC])
5260 return -EINVAL;
5261
5262 if (!info->attrs[NL80211_ATTR_PMKID])
5263 return -EINVAL;
5264
5265 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5266 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5267
5268 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5269 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5270 return -EOPNOTSUPP;
5271
5272 switch (info->genlhdr->cmd) {
5273 case NL80211_CMD_SET_PMKSA:
5274 rdev_ops = rdev->ops->set_pmksa;
5275 break;
5276 case NL80211_CMD_DEL_PMKSA:
5277 rdev_ops = rdev->ops->del_pmksa;
5278 break;
5279 default:
5280 WARN_ON(1);
5281 break;
5282 }
5283
5284 if (!rdev_ops)
5285 return -EOPNOTSUPP;
5286
5287 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5288 }
5289
5290 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5291 {
5292 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5293 struct net_device *dev = info->user_ptr[1];
5294
5295 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5296 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5297 return -EOPNOTSUPP;
5298
5299 if (!rdev->ops->flush_pmksa)
5300 return -EOPNOTSUPP;
5301
5302 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5303 }
5304
5305 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5306 {
5307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5308 struct net_device *dev = info->user_ptr[1];
5309 u8 action_code, dialog_token;
5310 u16 status_code;
5311 u8 *peer;
5312
5313 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5314 !rdev->ops->tdls_mgmt)
5315 return -EOPNOTSUPP;
5316
5317 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5318 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5319 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5320 !info->attrs[NL80211_ATTR_IE] ||
5321 !info->attrs[NL80211_ATTR_MAC])
5322 return -EINVAL;
5323
5324 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5325 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5326 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5327 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5328
5329 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5330 dialog_token, status_code,
5331 nla_data(info->attrs[NL80211_ATTR_IE]),
5332 nla_len(info->attrs[NL80211_ATTR_IE]));
5333 }
5334
5335 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5336 {
5337 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5338 struct net_device *dev = info->user_ptr[1];
5339 enum nl80211_tdls_operation operation;
5340 u8 *peer;
5341
5342 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5343 !rdev->ops->tdls_oper)
5344 return -EOPNOTSUPP;
5345
5346 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5347 !info->attrs[NL80211_ATTR_MAC])
5348 return -EINVAL;
5349
5350 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5351 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5352
5353 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5354 }
5355
5356 static int nl80211_remain_on_channel(struct sk_buff *skb,
5357 struct genl_info *info)
5358 {
5359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5360 struct net_device *dev = info->user_ptr[1];
5361 struct ieee80211_channel *chan;
5362 struct sk_buff *msg;
5363 void *hdr;
5364 u64 cookie;
5365 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5366 u32 freq, duration;
5367 int err;
5368
5369 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5370 !info->attrs[NL80211_ATTR_DURATION])
5371 return -EINVAL;
5372
5373 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5374
5375 /*
5376 * We should be on that channel for at least one jiffie,
5377 * and more than 5 seconds seems excessive.
5378 */
5379 if (!duration || !msecs_to_jiffies(duration) ||
5380 duration > rdev->wiphy.max_remain_on_channel_duration)
5381 return -EINVAL;
5382
5383 if (!rdev->ops->remain_on_channel ||
5384 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5385 return -EOPNOTSUPP;
5386
5387 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5388 channel_type = nla_get_u32(
5389 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5390 if (channel_type != NL80211_CHAN_NO_HT &&
5391 channel_type != NL80211_CHAN_HT20 &&
5392 channel_type != NL80211_CHAN_HT40PLUS &&
5393 channel_type != NL80211_CHAN_HT40MINUS)
5394 return -EINVAL;
5395 }
5396
5397 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5398 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5399 if (chan == NULL)
5400 return -EINVAL;
5401
5402 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5403 if (!msg)
5404 return -ENOMEM;
5405
5406 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5407 NL80211_CMD_REMAIN_ON_CHANNEL);
5408
5409 if (IS_ERR(hdr)) {
5410 err = PTR_ERR(hdr);
5411 goto free_msg;
5412 }
5413
5414 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5415 channel_type, duration, &cookie);
5416
5417 if (err)
5418 goto free_msg;
5419
5420 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5421
5422 genlmsg_end(msg, hdr);
5423
5424 return genlmsg_reply(msg, info);
5425
5426 nla_put_failure:
5427 err = -ENOBUFS;
5428 free_msg:
5429 nlmsg_free(msg);
5430 return err;
5431 }
5432
5433 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5434 struct genl_info *info)
5435 {
5436 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5437 struct net_device *dev = info->user_ptr[1];
5438 u64 cookie;
5439
5440 if (!info->attrs[NL80211_ATTR_COOKIE])
5441 return -EINVAL;
5442
5443 if (!rdev->ops->cancel_remain_on_channel)
5444 return -EOPNOTSUPP;
5445
5446 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5447
5448 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5449 }
5450
5451 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5452 u8 *rates, u8 rates_len)
5453 {
5454 u8 i;
5455 u32 mask = 0;
5456
5457 for (i = 0; i < rates_len; i++) {
5458 int rate = (rates[i] & 0x7f) * 5;
5459 int ridx;
5460 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5461 struct ieee80211_rate *srate =
5462 &sband->bitrates[ridx];
5463 if (rate == srate->bitrate) {
5464 mask |= 1 << ridx;
5465 break;
5466 }
5467 }
5468 if (ridx == sband->n_bitrates)
5469 return 0; /* rate not found */
5470 }
5471
5472 return mask;
5473 }
5474
5475 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5476 u8 *rates, u8 rates_len,
5477 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5478 {
5479 u8 i;
5480
5481 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5482
5483 for (i = 0; i < rates_len; i++) {
5484 int ridx, rbit;
5485
5486 ridx = rates[i] / 8;
5487 rbit = BIT(rates[i] % 8);
5488
5489 /* check validity */
5490 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5491 return false;
5492
5493 /* check availability */
5494 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5495 mcs[ridx] |= rbit;
5496 else
5497 return false;
5498 }
5499
5500 return true;
5501 }
5502
5503 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5504 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5505 .len = NL80211_MAX_SUPP_RATES },
5506 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5507 .len = NL80211_MAX_SUPP_HT_RATES },
5508 };
5509
5510 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5511 struct genl_info *info)
5512 {
5513 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5515 struct cfg80211_bitrate_mask mask;
5516 int rem, i;
5517 struct net_device *dev = info->user_ptr[1];
5518 struct nlattr *tx_rates;
5519 struct ieee80211_supported_band *sband;
5520
5521 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5522 return -EINVAL;
5523
5524 if (!rdev->ops->set_bitrate_mask)
5525 return -EOPNOTSUPP;
5526
5527 memset(&mask, 0, sizeof(mask));
5528 /* Default to all rates enabled */
5529 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5530 sband = rdev->wiphy.bands[i];
5531 mask.control[i].legacy =
5532 sband ? (1 << sband->n_bitrates) - 1 : 0;
5533 if (sband)
5534 memcpy(mask.control[i].mcs,
5535 sband->ht_cap.mcs.rx_mask,
5536 sizeof(mask.control[i].mcs));
5537 else
5538 memset(mask.control[i].mcs, 0,
5539 sizeof(mask.control[i].mcs));
5540 }
5541
5542 /*
5543 * The nested attribute uses enum nl80211_band as the index. This maps
5544 * directly to the enum ieee80211_band values used in cfg80211.
5545 */
5546 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5547 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5548 {
5549 enum ieee80211_band band = nla_type(tx_rates);
5550 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5551 return -EINVAL;
5552 sband = rdev->wiphy.bands[band];
5553 if (sband == NULL)
5554 return -EINVAL;
5555 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5556 nla_len(tx_rates), nl80211_txattr_policy);
5557 if (tb[NL80211_TXRATE_LEGACY]) {
5558 mask.control[band].legacy = rateset_to_mask(
5559 sband,
5560 nla_data(tb[NL80211_TXRATE_LEGACY]),
5561 nla_len(tb[NL80211_TXRATE_LEGACY]));
5562 }
5563 if (tb[NL80211_TXRATE_MCS]) {
5564 if (!ht_rateset_to_mask(
5565 sband,
5566 nla_data(tb[NL80211_TXRATE_MCS]),
5567 nla_len(tb[NL80211_TXRATE_MCS]),
5568 mask.control[band].mcs))
5569 return -EINVAL;
5570 }
5571
5572 if (mask.control[band].legacy == 0) {
5573 /* don't allow empty legacy rates if HT
5574 * is not even supported. */
5575 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5576 return -EINVAL;
5577
5578 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5579 if (mask.control[band].mcs[i])
5580 break;
5581
5582 /* legacy and mcs rates may not be both empty */
5583 if (i == IEEE80211_HT_MCS_MASK_LEN)
5584 return -EINVAL;
5585 }
5586 }
5587
5588 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5589 }
5590
5591 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5592 {
5593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5594 struct net_device *dev = info->user_ptr[1];
5595 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5596
5597 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5598 return -EINVAL;
5599
5600 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5601 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5602
5603 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5604 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5605 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5606 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5607 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5608 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5609 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5610 return -EOPNOTSUPP;
5611
5612 /* not much point in registering if we can't reply */
5613 if (!rdev->ops->mgmt_tx)
5614 return -EOPNOTSUPP;
5615
5616 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5617 frame_type,
5618 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5619 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5620 }
5621
5622 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5623 {
5624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5625 struct net_device *dev = info->user_ptr[1];
5626 struct ieee80211_channel *chan;
5627 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5628 bool channel_type_valid = false;
5629 u32 freq;
5630 int err;
5631 void *hdr = NULL;
5632 u64 cookie;
5633 struct sk_buff *msg = NULL;
5634 unsigned int wait = 0;
5635 bool offchan, no_cck, dont_wait_for_ack;
5636
5637 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5638
5639 if (!info->attrs[NL80211_ATTR_FRAME] ||
5640 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5641 return -EINVAL;
5642
5643 if (!rdev->ops->mgmt_tx)
5644 return -EOPNOTSUPP;
5645
5646 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5647 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5648 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5649 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5650 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5651 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5652 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5653 return -EOPNOTSUPP;
5654
5655 if (info->attrs[NL80211_ATTR_DURATION]) {
5656 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5657 return -EINVAL;
5658 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5659 }
5660
5661 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5662 channel_type = nla_get_u32(
5663 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5664 if (channel_type != NL80211_CHAN_NO_HT &&
5665 channel_type != NL80211_CHAN_HT20 &&
5666 channel_type != NL80211_CHAN_HT40PLUS &&
5667 channel_type != NL80211_CHAN_HT40MINUS)
5668 return -EINVAL;
5669 channel_type_valid = true;
5670 }
5671
5672 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5673
5674 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5675 return -EINVAL;
5676
5677 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5678
5679 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5680 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5681 if (chan == NULL)
5682 return -EINVAL;
5683
5684 if (!dont_wait_for_ack) {
5685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5686 if (!msg)
5687 return -ENOMEM;
5688
5689 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5690 NL80211_CMD_FRAME);
5691
5692 if (IS_ERR(hdr)) {
5693 err = PTR_ERR(hdr);
5694 goto free_msg;
5695 }
5696 }
5697
5698 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5699 channel_type_valid, wait,
5700 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5701 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5702 no_cck, dont_wait_for_ack, &cookie);
5703 if (err)
5704 goto free_msg;
5705
5706 if (msg) {
5707 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5708
5709 genlmsg_end(msg, hdr);
5710 return genlmsg_reply(msg, info);
5711 }
5712
5713 return 0;
5714
5715 nla_put_failure:
5716 err = -ENOBUFS;
5717 free_msg:
5718 nlmsg_free(msg);
5719 return err;
5720 }
5721
5722 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5723 {
5724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5725 struct net_device *dev = info->user_ptr[1];
5726 u64 cookie;
5727
5728 if (!info->attrs[NL80211_ATTR_COOKIE])
5729 return -EINVAL;
5730
5731 if (!rdev->ops->mgmt_tx_cancel_wait)
5732 return -EOPNOTSUPP;
5733
5734 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5735 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5736 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5737 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5738 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5739 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5740 return -EOPNOTSUPP;
5741
5742 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5743
5744 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5745 }
5746
5747 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5748 {
5749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5750 struct wireless_dev *wdev;
5751 struct net_device *dev = info->user_ptr[1];
5752 u8 ps_state;
5753 bool state;
5754 int err;
5755
5756 if (!info->attrs[NL80211_ATTR_PS_STATE])
5757 return -EINVAL;
5758
5759 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5760
5761 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5762 return -EINVAL;
5763
5764 wdev = dev->ieee80211_ptr;
5765
5766 if (!rdev->ops->set_power_mgmt)
5767 return -EOPNOTSUPP;
5768
5769 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5770
5771 if (state == wdev->ps)
5772 return 0;
5773
5774 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5775 wdev->ps_timeout);
5776 if (!err)
5777 wdev->ps = state;
5778 return err;
5779 }
5780
5781 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5782 {
5783 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5784 enum nl80211_ps_state ps_state;
5785 struct wireless_dev *wdev;
5786 struct net_device *dev = info->user_ptr[1];
5787 struct sk_buff *msg;
5788 void *hdr;
5789 int err;
5790
5791 wdev = dev->ieee80211_ptr;
5792
5793 if (!rdev->ops->set_power_mgmt)
5794 return -EOPNOTSUPP;
5795
5796 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5797 if (!msg)
5798 return -ENOMEM;
5799
5800 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5801 NL80211_CMD_GET_POWER_SAVE);
5802 if (!hdr) {
5803 err = -ENOBUFS;
5804 goto free_msg;
5805 }
5806
5807 if (wdev->ps)
5808 ps_state = NL80211_PS_ENABLED;
5809 else
5810 ps_state = NL80211_PS_DISABLED;
5811
5812 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5813
5814 genlmsg_end(msg, hdr);
5815 return genlmsg_reply(msg, info);
5816
5817 nla_put_failure:
5818 err = -ENOBUFS;
5819 free_msg:
5820 nlmsg_free(msg);
5821 return err;
5822 }
5823
5824 static struct nla_policy
5825 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5826 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5827 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5828 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5829 };
5830
5831 static int nl80211_set_cqm_rssi(struct genl_info *info,
5832 s32 threshold, u32 hysteresis)
5833 {
5834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5835 struct wireless_dev *wdev;
5836 struct net_device *dev = info->user_ptr[1];
5837
5838 if (threshold > 0)
5839 return -EINVAL;
5840
5841 wdev = dev->ieee80211_ptr;
5842
5843 if (!rdev->ops->set_cqm_rssi_config)
5844 return -EOPNOTSUPP;
5845
5846 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5847 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5848 return -EOPNOTSUPP;
5849
5850 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5851 threshold, hysteresis);
5852 }
5853
5854 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5855 {
5856 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5857 struct nlattr *cqm;
5858 int err;
5859
5860 cqm = info->attrs[NL80211_ATTR_CQM];
5861 if (!cqm) {
5862 err = -EINVAL;
5863 goto out;
5864 }
5865
5866 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5867 nl80211_attr_cqm_policy);
5868 if (err)
5869 goto out;
5870
5871 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5872 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5873 s32 threshold;
5874 u32 hysteresis;
5875 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5876 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5877 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5878 } else
5879 err = -EINVAL;
5880
5881 out:
5882 return err;
5883 }
5884
5885 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5886 {
5887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5888 struct net_device *dev = info->user_ptr[1];
5889 struct mesh_config cfg;
5890 struct mesh_setup setup;
5891 int err;
5892
5893 /* start with default */
5894 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5895 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5896
5897 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5898 /* and parse parameters if given */
5899 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5900 if (err)
5901 return err;
5902 }
5903
5904 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5905 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5906 return -EINVAL;
5907
5908 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5909 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5910
5911 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5912 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
5913 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5914 return -EINVAL;
5915
5916 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5917 /* parse additional setup parameters if given */
5918 err = nl80211_parse_mesh_setup(info, &setup);
5919 if (err)
5920 return err;
5921 }
5922
5923 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5924 }
5925
5926 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5927 {
5928 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5929 struct net_device *dev = info->user_ptr[1];
5930
5931 return cfg80211_leave_mesh(rdev, dev);
5932 }
5933
5934 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5935 {
5936 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5937 struct sk_buff *msg;
5938 void *hdr;
5939
5940 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5941 return -EOPNOTSUPP;
5942
5943 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5944 if (!msg)
5945 return -ENOMEM;
5946
5947 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5948 NL80211_CMD_GET_WOWLAN);
5949 if (!hdr)
5950 goto nla_put_failure;
5951
5952 if (rdev->wowlan) {
5953 struct nlattr *nl_wowlan;
5954
5955 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5956 if (!nl_wowlan)
5957 goto nla_put_failure;
5958
5959 if (rdev->wowlan->any)
5960 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5961 if (rdev->wowlan->disconnect)
5962 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5963 if (rdev->wowlan->magic_pkt)
5964 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5965 if (rdev->wowlan->gtk_rekey_failure)
5966 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5967 if (rdev->wowlan->eap_identity_req)
5968 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5969 if (rdev->wowlan->four_way_handshake)
5970 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5971 if (rdev->wowlan->rfkill_release)
5972 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5973 if (rdev->wowlan->n_patterns) {
5974 struct nlattr *nl_pats, *nl_pat;
5975 int i, pat_len;
5976
5977 nl_pats = nla_nest_start(msg,
5978 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5979 if (!nl_pats)
5980 goto nla_put_failure;
5981
5982 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5983 nl_pat = nla_nest_start(msg, i + 1);
5984 if (!nl_pat)
5985 goto nla_put_failure;
5986 pat_len = rdev->wowlan->patterns[i].pattern_len;
5987 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5988 DIV_ROUND_UP(pat_len, 8),
5989 rdev->wowlan->patterns[i].mask);
5990 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5991 pat_len,
5992 rdev->wowlan->patterns[i].pattern);
5993 nla_nest_end(msg, nl_pat);
5994 }
5995 nla_nest_end(msg, nl_pats);
5996 }
5997
5998 nla_nest_end(msg, nl_wowlan);
5999 }
6000
6001 genlmsg_end(msg, hdr);
6002 return genlmsg_reply(msg, info);
6003
6004 nla_put_failure:
6005 nlmsg_free(msg);
6006 return -ENOBUFS;
6007 }
6008
6009 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6010 {
6011 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6012 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6013 struct cfg80211_wowlan no_triggers = {};
6014 struct cfg80211_wowlan new_triggers = {};
6015 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6016 int err, i;
6017 bool prev_enabled = rdev->wowlan;
6018
6019 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6020 return -EOPNOTSUPP;
6021
6022 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
6023 goto no_triggers;
6024
6025 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6026 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6027 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6028 nl80211_wowlan_policy);
6029 if (err)
6030 return err;
6031
6032 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6033 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6034 return -EINVAL;
6035 new_triggers.any = true;
6036 }
6037
6038 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6039 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6040 return -EINVAL;
6041 new_triggers.disconnect = true;
6042 }
6043
6044 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6045 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6046 return -EINVAL;
6047 new_triggers.magic_pkt = true;
6048 }
6049
6050 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6051 return -EINVAL;
6052
6053 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6054 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6055 return -EINVAL;
6056 new_triggers.gtk_rekey_failure = true;
6057 }
6058
6059 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6060 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6061 return -EINVAL;
6062 new_triggers.eap_identity_req = true;
6063 }
6064
6065 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6066 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6067 return -EINVAL;
6068 new_triggers.four_way_handshake = true;
6069 }
6070
6071 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6072 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6073 return -EINVAL;
6074 new_triggers.rfkill_release = true;
6075 }
6076
6077 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6078 struct nlattr *pat;
6079 int n_patterns = 0;
6080 int rem, pat_len, mask_len;
6081 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6082
6083 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6084 rem)
6085 n_patterns++;
6086 if (n_patterns > wowlan->n_patterns)
6087 return -EINVAL;
6088
6089 new_triggers.patterns = kcalloc(n_patterns,
6090 sizeof(new_triggers.patterns[0]),
6091 GFP_KERNEL);
6092 if (!new_triggers.patterns)
6093 return -ENOMEM;
6094
6095 new_triggers.n_patterns = n_patterns;
6096 i = 0;
6097
6098 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6099 rem) {
6100 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6101 nla_data(pat), nla_len(pat), NULL);
6102 err = -EINVAL;
6103 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6104 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6105 goto error;
6106 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6107 mask_len = DIV_ROUND_UP(pat_len, 8);
6108 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6109 mask_len)
6110 goto error;
6111 if (pat_len > wowlan->pattern_max_len ||
6112 pat_len < wowlan->pattern_min_len)
6113 goto error;
6114
6115 new_triggers.patterns[i].mask =
6116 kmalloc(mask_len + pat_len, GFP_KERNEL);
6117 if (!new_triggers.patterns[i].mask) {
6118 err = -ENOMEM;
6119 goto error;
6120 }
6121 new_triggers.patterns[i].pattern =
6122 new_triggers.patterns[i].mask + mask_len;
6123 memcpy(new_triggers.patterns[i].mask,
6124 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6125 mask_len);
6126 new_triggers.patterns[i].pattern_len = pat_len;
6127 memcpy(new_triggers.patterns[i].pattern,
6128 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6129 pat_len);
6130 i++;
6131 }
6132 }
6133
6134 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6135 struct cfg80211_wowlan *ntrig;
6136 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6137 GFP_KERNEL);
6138 if (!ntrig) {
6139 err = -ENOMEM;
6140 goto error;
6141 }
6142 cfg80211_rdev_free_wowlan(rdev);
6143 rdev->wowlan = ntrig;
6144 } else {
6145 no_triggers:
6146 cfg80211_rdev_free_wowlan(rdev);
6147 rdev->wowlan = NULL;
6148 }
6149
6150 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6151 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6152
6153 return 0;
6154 error:
6155 for (i = 0; i < new_triggers.n_patterns; i++)
6156 kfree(new_triggers.patterns[i].mask);
6157 kfree(new_triggers.patterns);
6158 return err;
6159 }
6160
6161 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6162 {
6163 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6164 struct net_device *dev = info->user_ptr[1];
6165 struct wireless_dev *wdev = dev->ieee80211_ptr;
6166 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6167 struct cfg80211_gtk_rekey_data rekey_data;
6168 int err;
6169
6170 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6171 return -EINVAL;
6172
6173 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6174 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6175 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6176 nl80211_rekey_policy);
6177 if (err)
6178 return err;
6179
6180 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6181 return -ERANGE;
6182 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6183 return -ERANGE;
6184 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6185 return -ERANGE;
6186
6187 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6188 NL80211_KEK_LEN);
6189 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6190 NL80211_KCK_LEN);
6191 memcpy(rekey_data.replay_ctr,
6192 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6193 NL80211_REPLAY_CTR_LEN);
6194
6195 wdev_lock(wdev);
6196 if (!wdev->current_bss) {
6197 err = -ENOTCONN;
6198 goto out;
6199 }
6200
6201 if (!rdev->ops->set_rekey_data) {
6202 err = -EOPNOTSUPP;
6203 goto out;
6204 }
6205
6206 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6207 out:
6208 wdev_unlock(wdev);
6209 return err;
6210 }
6211
6212 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6213 struct genl_info *info)
6214 {
6215 struct net_device *dev = info->user_ptr[1];
6216 struct wireless_dev *wdev = dev->ieee80211_ptr;
6217
6218 if (wdev->iftype != NL80211_IFTYPE_AP &&
6219 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6220 return -EINVAL;
6221
6222 if (wdev->ap_unexpected_nlpid)
6223 return -EBUSY;
6224
6225 wdev->ap_unexpected_nlpid = info->snd_pid;
6226 return 0;
6227 }
6228
6229 static int nl80211_probe_client(struct sk_buff *skb,
6230 struct genl_info *info)
6231 {
6232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6233 struct net_device *dev = info->user_ptr[1];
6234 struct wireless_dev *wdev = dev->ieee80211_ptr;
6235 struct sk_buff *msg;
6236 void *hdr;
6237 const u8 *addr;
6238 u64 cookie;
6239 int err;
6240
6241 if (wdev->iftype != NL80211_IFTYPE_AP &&
6242 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6243 return -EOPNOTSUPP;
6244
6245 if (!info->attrs[NL80211_ATTR_MAC])
6246 return -EINVAL;
6247
6248 if (!rdev->ops->probe_client)
6249 return -EOPNOTSUPP;
6250
6251 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6252 if (!msg)
6253 return -ENOMEM;
6254
6255 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6256 NL80211_CMD_PROBE_CLIENT);
6257
6258 if (IS_ERR(hdr)) {
6259 err = PTR_ERR(hdr);
6260 goto free_msg;
6261 }
6262
6263 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6264
6265 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6266 if (err)
6267 goto free_msg;
6268
6269 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6270
6271 genlmsg_end(msg, hdr);
6272
6273 return genlmsg_reply(msg, info);
6274
6275 nla_put_failure:
6276 err = -ENOBUFS;
6277 free_msg:
6278 nlmsg_free(msg);
6279 return err;
6280 }
6281
6282 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6283 {
6284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6285
6286 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6287 return -EOPNOTSUPP;
6288
6289 if (rdev->ap_beacons_nlpid)
6290 return -EBUSY;
6291
6292 rdev->ap_beacons_nlpid = info->snd_pid;
6293
6294 return 0;
6295 }
6296
6297 #define NL80211_FLAG_NEED_WIPHY 0x01
6298 #define NL80211_FLAG_NEED_NETDEV 0x02
6299 #define NL80211_FLAG_NEED_RTNL 0x04
6300 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6301 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6302 NL80211_FLAG_CHECK_NETDEV_UP)
6303
6304 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6305 struct genl_info *info)
6306 {
6307 struct cfg80211_registered_device *rdev;
6308 struct net_device *dev;
6309 int err;
6310 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6311
6312 if (rtnl)
6313 rtnl_lock();
6314
6315 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6316 rdev = cfg80211_get_dev_from_info(info);
6317 if (IS_ERR(rdev)) {
6318 if (rtnl)
6319 rtnl_unlock();
6320 return PTR_ERR(rdev);
6321 }
6322 info->user_ptr[0] = rdev;
6323 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6324 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6325 &rdev, &dev);
6326 if (err) {
6327 if (rtnl)
6328 rtnl_unlock();
6329 return err;
6330 }
6331 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6332 !netif_running(dev)) {
6333 cfg80211_unlock_rdev(rdev);
6334 dev_put(dev);
6335 if (rtnl)
6336 rtnl_unlock();
6337 return -ENETDOWN;
6338 }
6339 info->user_ptr[0] = rdev;
6340 info->user_ptr[1] = dev;
6341 }
6342
6343 return 0;
6344 }
6345
6346 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6347 struct genl_info *info)
6348 {
6349 if (info->user_ptr[0])
6350 cfg80211_unlock_rdev(info->user_ptr[0]);
6351 if (info->user_ptr[1])
6352 dev_put(info->user_ptr[1]);
6353 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6354 rtnl_unlock();
6355 }
6356
6357 static struct genl_ops nl80211_ops[] = {
6358 {
6359 .cmd = NL80211_CMD_GET_WIPHY,
6360 .doit = nl80211_get_wiphy,
6361 .dumpit = nl80211_dump_wiphy,
6362 .policy = nl80211_policy,
6363 /* can be retrieved by unprivileged users */
6364 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6365 },
6366 {
6367 .cmd = NL80211_CMD_SET_WIPHY,
6368 .doit = nl80211_set_wiphy,
6369 .policy = nl80211_policy,
6370 .flags = GENL_ADMIN_PERM,
6371 .internal_flags = NL80211_FLAG_NEED_RTNL,
6372 },
6373 {
6374 .cmd = NL80211_CMD_GET_INTERFACE,
6375 .doit = nl80211_get_interface,
6376 .dumpit = nl80211_dump_interface,
6377 .policy = nl80211_policy,
6378 /* can be retrieved by unprivileged users */
6379 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6380 },
6381 {
6382 .cmd = NL80211_CMD_SET_INTERFACE,
6383 .doit = nl80211_set_interface,
6384 .policy = nl80211_policy,
6385 .flags = GENL_ADMIN_PERM,
6386 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6387 NL80211_FLAG_NEED_RTNL,
6388 },
6389 {
6390 .cmd = NL80211_CMD_NEW_INTERFACE,
6391 .doit = nl80211_new_interface,
6392 .policy = nl80211_policy,
6393 .flags = GENL_ADMIN_PERM,
6394 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6395 NL80211_FLAG_NEED_RTNL,
6396 },
6397 {
6398 .cmd = NL80211_CMD_DEL_INTERFACE,
6399 .doit = nl80211_del_interface,
6400 .policy = nl80211_policy,
6401 .flags = GENL_ADMIN_PERM,
6402 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6403 NL80211_FLAG_NEED_RTNL,
6404 },
6405 {
6406 .cmd = NL80211_CMD_GET_KEY,
6407 .doit = nl80211_get_key,
6408 .policy = nl80211_policy,
6409 .flags = GENL_ADMIN_PERM,
6410 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6411 NL80211_FLAG_NEED_RTNL,
6412 },
6413 {
6414 .cmd = NL80211_CMD_SET_KEY,
6415 .doit = nl80211_set_key,
6416 .policy = nl80211_policy,
6417 .flags = GENL_ADMIN_PERM,
6418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6419 NL80211_FLAG_NEED_RTNL,
6420 },
6421 {
6422 .cmd = NL80211_CMD_NEW_KEY,
6423 .doit = nl80211_new_key,
6424 .policy = nl80211_policy,
6425 .flags = GENL_ADMIN_PERM,
6426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6427 NL80211_FLAG_NEED_RTNL,
6428 },
6429 {
6430 .cmd = NL80211_CMD_DEL_KEY,
6431 .doit = nl80211_del_key,
6432 .policy = nl80211_policy,
6433 .flags = GENL_ADMIN_PERM,
6434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6435 NL80211_FLAG_NEED_RTNL,
6436 },
6437 {
6438 .cmd = NL80211_CMD_SET_BEACON,
6439 .policy = nl80211_policy,
6440 .flags = GENL_ADMIN_PERM,
6441 .doit = nl80211_set_beacon,
6442 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6443 NL80211_FLAG_NEED_RTNL,
6444 },
6445 {
6446 .cmd = NL80211_CMD_START_AP,
6447 .policy = nl80211_policy,
6448 .flags = GENL_ADMIN_PERM,
6449 .doit = nl80211_start_ap,
6450 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6451 NL80211_FLAG_NEED_RTNL,
6452 },
6453 {
6454 .cmd = NL80211_CMD_STOP_AP,
6455 .policy = nl80211_policy,
6456 .flags = GENL_ADMIN_PERM,
6457 .doit = nl80211_stop_ap,
6458 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6459 NL80211_FLAG_NEED_RTNL,
6460 },
6461 {
6462 .cmd = NL80211_CMD_GET_STATION,
6463 .doit = nl80211_get_station,
6464 .dumpit = nl80211_dump_station,
6465 .policy = nl80211_policy,
6466 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6467 NL80211_FLAG_NEED_RTNL,
6468 },
6469 {
6470 .cmd = NL80211_CMD_SET_STATION,
6471 .doit = nl80211_set_station,
6472 .policy = nl80211_policy,
6473 .flags = GENL_ADMIN_PERM,
6474 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6475 NL80211_FLAG_NEED_RTNL,
6476 },
6477 {
6478 .cmd = NL80211_CMD_NEW_STATION,
6479 .doit = nl80211_new_station,
6480 .policy = nl80211_policy,
6481 .flags = GENL_ADMIN_PERM,
6482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6483 NL80211_FLAG_NEED_RTNL,
6484 },
6485 {
6486 .cmd = NL80211_CMD_DEL_STATION,
6487 .doit = nl80211_del_station,
6488 .policy = nl80211_policy,
6489 .flags = GENL_ADMIN_PERM,
6490 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6491 NL80211_FLAG_NEED_RTNL,
6492 },
6493 {
6494 .cmd = NL80211_CMD_GET_MPATH,
6495 .doit = nl80211_get_mpath,
6496 .dumpit = nl80211_dump_mpath,
6497 .policy = nl80211_policy,
6498 .flags = GENL_ADMIN_PERM,
6499 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6500 NL80211_FLAG_NEED_RTNL,
6501 },
6502 {
6503 .cmd = NL80211_CMD_SET_MPATH,
6504 .doit = nl80211_set_mpath,
6505 .policy = nl80211_policy,
6506 .flags = GENL_ADMIN_PERM,
6507 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6508 NL80211_FLAG_NEED_RTNL,
6509 },
6510 {
6511 .cmd = NL80211_CMD_NEW_MPATH,
6512 .doit = nl80211_new_mpath,
6513 .policy = nl80211_policy,
6514 .flags = GENL_ADMIN_PERM,
6515 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6516 NL80211_FLAG_NEED_RTNL,
6517 },
6518 {
6519 .cmd = NL80211_CMD_DEL_MPATH,
6520 .doit = nl80211_del_mpath,
6521 .policy = nl80211_policy,
6522 .flags = GENL_ADMIN_PERM,
6523 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6524 NL80211_FLAG_NEED_RTNL,
6525 },
6526 {
6527 .cmd = NL80211_CMD_SET_BSS,
6528 .doit = nl80211_set_bss,
6529 .policy = nl80211_policy,
6530 .flags = GENL_ADMIN_PERM,
6531 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6532 NL80211_FLAG_NEED_RTNL,
6533 },
6534 {
6535 .cmd = NL80211_CMD_GET_REG,
6536 .doit = nl80211_get_reg,
6537 .policy = nl80211_policy,
6538 /* can be retrieved by unprivileged users */
6539 },
6540 {
6541 .cmd = NL80211_CMD_SET_REG,
6542 .doit = nl80211_set_reg,
6543 .policy = nl80211_policy,
6544 .flags = GENL_ADMIN_PERM,
6545 },
6546 {
6547 .cmd = NL80211_CMD_REQ_SET_REG,
6548 .doit = nl80211_req_set_reg,
6549 .policy = nl80211_policy,
6550 .flags = GENL_ADMIN_PERM,
6551 },
6552 {
6553 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6554 .doit = nl80211_get_mesh_config,
6555 .policy = nl80211_policy,
6556 /* can be retrieved by unprivileged users */
6557 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6558 NL80211_FLAG_NEED_RTNL,
6559 },
6560 {
6561 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6562 .doit = nl80211_update_mesh_config,
6563 .policy = nl80211_policy,
6564 .flags = GENL_ADMIN_PERM,
6565 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6566 NL80211_FLAG_NEED_RTNL,
6567 },
6568 {
6569 .cmd = NL80211_CMD_TRIGGER_SCAN,
6570 .doit = nl80211_trigger_scan,
6571 .policy = nl80211_policy,
6572 .flags = GENL_ADMIN_PERM,
6573 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6574 NL80211_FLAG_NEED_RTNL,
6575 },
6576 {
6577 .cmd = NL80211_CMD_GET_SCAN,
6578 .policy = nl80211_policy,
6579 .dumpit = nl80211_dump_scan,
6580 },
6581 {
6582 .cmd = NL80211_CMD_START_SCHED_SCAN,
6583 .doit = nl80211_start_sched_scan,
6584 .policy = nl80211_policy,
6585 .flags = GENL_ADMIN_PERM,
6586 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6587 NL80211_FLAG_NEED_RTNL,
6588 },
6589 {
6590 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6591 .doit = nl80211_stop_sched_scan,
6592 .policy = nl80211_policy,
6593 .flags = GENL_ADMIN_PERM,
6594 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6595 NL80211_FLAG_NEED_RTNL,
6596 },
6597 {
6598 .cmd = NL80211_CMD_AUTHENTICATE,
6599 .doit = nl80211_authenticate,
6600 .policy = nl80211_policy,
6601 .flags = GENL_ADMIN_PERM,
6602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6603 NL80211_FLAG_NEED_RTNL,
6604 },
6605 {
6606 .cmd = NL80211_CMD_ASSOCIATE,
6607 .doit = nl80211_associate,
6608 .policy = nl80211_policy,
6609 .flags = GENL_ADMIN_PERM,
6610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6611 NL80211_FLAG_NEED_RTNL,
6612 },
6613 {
6614 .cmd = NL80211_CMD_DEAUTHENTICATE,
6615 .doit = nl80211_deauthenticate,
6616 .policy = nl80211_policy,
6617 .flags = GENL_ADMIN_PERM,
6618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6619 NL80211_FLAG_NEED_RTNL,
6620 },
6621 {
6622 .cmd = NL80211_CMD_DISASSOCIATE,
6623 .doit = nl80211_disassociate,
6624 .policy = nl80211_policy,
6625 .flags = GENL_ADMIN_PERM,
6626 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6627 NL80211_FLAG_NEED_RTNL,
6628 },
6629 {
6630 .cmd = NL80211_CMD_JOIN_IBSS,
6631 .doit = nl80211_join_ibss,
6632 .policy = nl80211_policy,
6633 .flags = GENL_ADMIN_PERM,
6634 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6635 NL80211_FLAG_NEED_RTNL,
6636 },
6637 {
6638 .cmd = NL80211_CMD_LEAVE_IBSS,
6639 .doit = nl80211_leave_ibss,
6640 .policy = nl80211_policy,
6641 .flags = GENL_ADMIN_PERM,
6642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6643 NL80211_FLAG_NEED_RTNL,
6644 },
6645 #ifdef CONFIG_NL80211_TESTMODE
6646 {
6647 .cmd = NL80211_CMD_TESTMODE,
6648 .doit = nl80211_testmode_do,
6649 .dumpit = nl80211_testmode_dump,
6650 .policy = nl80211_policy,
6651 .flags = GENL_ADMIN_PERM,
6652 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6653 NL80211_FLAG_NEED_RTNL,
6654 },
6655 #endif
6656 {
6657 .cmd = NL80211_CMD_CONNECT,
6658 .doit = nl80211_connect,
6659 .policy = nl80211_policy,
6660 .flags = GENL_ADMIN_PERM,
6661 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6662 NL80211_FLAG_NEED_RTNL,
6663 },
6664 {
6665 .cmd = NL80211_CMD_DISCONNECT,
6666 .doit = nl80211_disconnect,
6667 .policy = nl80211_policy,
6668 .flags = GENL_ADMIN_PERM,
6669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6670 NL80211_FLAG_NEED_RTNL,
6671 },
6672 {
6673 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6674 .doit = nl80211_wiphy_netns,
6675 .policy = nl80211_policy,
6676 .flags = GENL_ADMIN_PERM,
6677 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6678 NL80211_FLAG_NEED_RTNL,
6679 },
6680 {
6681 .cmd = NL80211_CMD_GET_SURVEY,
6682 .policy = nl80211_policy,
6683 .dumpit = nl80211_dump_survey,
6684 },
6685 {
6686 .cmd = NL80211_CMD_SET_PMKSA,
6687 .doit = nl80211_setdel_pmksa,
6688 .policy = nl80211_policy,
6689 .flags = GENL_ADMIN_PERM,
6690 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6691 NL80211_FLAG_NEED_RTNL,
6692 },
6693 {
6694 .cmd = NL80211_CMD_DEL_PMKSA,
6695 .doit = nl80211_setdel_pmksa,
6696 .policy = nl80211_policy,
6697 .flags = GENL_ADMIN_PERM,
6698 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6699 NL80211_FLAG_NEED_RTNL,
6700 },
6701 {
6702 .cmd = NL80211_CMD_FLUSH_PMKSA,
6703 .doit = nl80211_flush_pmksa,
6704 .policy = nl80211_policy,
6705 .flags = GENL_ADMIN_PERM,
6706 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6707 NL80211_FLAG_NEED_RTNL,
6708 },
6709 {
6710 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6711 .doit = nl80211_remain_on_channel,
6712 .policy = nl80211_policy,
6713 .flags = GENL_ADMIN_PERM,
6714 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6715 NL80211_FLAG_NEED_RTNL,
6716 },
6717 {
6718 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6719 .doit = nl80211_cancel_remain_on_channel,
6720 .policy = nl80211_policy,
6721 .flags = GENL_ADMIN_PERM,
6722 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6723 NL80211_FLAG_NEED_RTNL,
6724 },
6725 {
6726 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6727 .doit = nl80211_set_tx_bitrate_mask,
6728 .policy = nl80211_policy,
6729 .flags = GENL_ADMIN_PERM,
6730 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6731 NL80211_FLAG_NEED_RTNL,
6732 },
6733 {
6734 .cmd = NL80211_CMD_REGISTER_FRAME,
6735 .doit = nl80211_register_mgmt,
6736 .policy = nl80211_policy,
6737 .flags = GENL_ADMIN_PERM,
6738 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6739 NL80211_FLAG_NEED_RTNL,
6740 },
6741 {
6742 .cmd = NL80211_CMD_FRAME,
6743 .doit = nl80211_tx_mgmt,
6744 .policy = nl80211_policy,
6745 .flags = GENL_ADMIN_PERM,
6746 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6747 NL80211_FLAG_NEED_RTNL,
6748 },
6749 {
6750 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6751 .doit = nl80211_tx_mgmt_cancel_wait,
6752 .policy = nl80211_policy,
6753 .flags = GENL_ADMIN_PERM,
6754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6755 NL80211_FLAG_NEED_RTNL,
6756 },
6757 {
6758 .cmd = NL80211_CMD_SET_POWER_SAVE,
6759 .doit = nl80211_set_power_save,
6760 .policy = nl80211_policy,
6761 .flags = GENL_ADMIN_PERM,
6762 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6763 NL80211_FLAG_NEED_RTNL,
6764 },
6765 {
6766 .cmd = NL80211_CMD_GET_POWER_SAVE,
6767 .doit = nl80211_get_power_save,
6768 .policy = nl80211_policy,
6769 /* can be retrieved by unprivileged users */
6770 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6771 NL80211_FLAG_NEED_RTNL,
6772 },
6773 {
6774 .cmd = NL80211_CMD_SET_CQM,
6775 .doit = nl80211_set_cqm,
6776 .policy = nl80211_policy,
6777 .flags = GENL_ADMIN_PERM,
6778 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6779 NL80211_FLAG_NEED_RTNL,
6780 },
6781 {
6782 .cmd = NL80211_CMD_SET_CHANNEL,
6783 .doit = nl80211_set_channel,
6784 .policy = nl80211_policy,
6785 .flags = GENL_ADMIN_PERM,
6786 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6787 NL80211_FLAG_NEED_RTNL,
6788 },
6789 {
6790 .cmd = NL80211_CMD_SET_WDS_PEER,
6791 .doit = nl80211_set_wds_peer,
6792 .policy = nl80211_policy,
6793 .flags = GENL_ADMIN_PERM,
6794 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6795 NL80211_FLAG_NEED_RTNL,
6796 },
6797 {
6798 .cmd = NL80211_CMD_JOIN_MESH,
6799 .doit = nl80211_join_mesh,
6800 .policy = nl80211_policy,
6801 .flags = GENL_ADMIN_PERM,
6802 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6803 NL80211_FLAG_NEED_RTNL,
6804 },
6805 {
6806 .cmd = NL80211_CMD_LEAVE_MESH,
6807 .doit = nl80211_leave_mesh,
6808 .policy = nl80211_policy,
6809 .flags = GENL_ADMIN_PERM,
6810 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6811 NL80211_FLAG_NEED_RTNL,
6812 },
6813 {
6814 .cmd = NL80211_CMD_GET_WOWLAN,
6815 .doit = nl80211_get_wowlan,
6816 .policy = nl80211_policy,
6817 /* can be retrieved by unprivileged users */
6818 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6819 NL80211_FLAG_NEED_RTNL,
6820 },
6821 {
6822 .cmd = NL80211_CMD_SET_WOWLAN,
6823 .doit = nl80211_set_wowlan,
6824 .policy = nl80211_policy,
6825 .flags = GENL_ADMIN_PERM,
6826 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6827 NL80211_FLAG_NEED_RTNL,
6828 },
6829 {
6830 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6831 .doit = nl80211_set_rekey_data,
6832 .policy = nl80211_policy,
6833 .flags = GENL_ADMIN_PERM,
6834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6835 NL80211_FLAG_NEED_RTNL,
6836 },
6837 {
6838 .cmd = NL80211_CMD_TDLS_MGMT,
6839 .doit = nl80211_tdls_mgmt,
6840 .policy = nl80211_policy,
6841 .flags = GENL_ADMIN_PERM,
6842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6843 NL80211_FLAG_NEED_RTNL,
6844 },
6845 {
6846 .cmd = NL80211_CMD_TDLS_OPER,
6847 .doit = nl80211_tdls_oper,
6848 .policy = nl80211_policy,
6849 .flags = GENL_ADMIN_PERM,
6850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6851 NL80211_FLAG_NEED_RTNL,
6852 },
6853 {
6854 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
6855 .doit = nl80211_register_unexpected_frame,
6856 .policy = nl80211_policy,
6857 .flags = GENL_ADMIN_PERM,
6858 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6859 NL80211_FLAG_NEED_RTNL,
6860 },
6861 {
6862 .cmd = NL80211_CMD_PROBE_CLIENT,
6863 .doit = nl80211_probe_client,
6864 .policy = nl80211_policy,
6865 .flags = GENL_ADMIN_PERM,
6866 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6867 NL80211_FLAG_NEED_RTNL,
6868 },
6869 {
6870 .cmd = NL80211_CMD_REGISTER_BEACONS,
6871 .doit = nl80211_register_beacons,
6872 .policy = nl80211_policy,
6873 .flags = GENL_ADMIN_PERM,
6874 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6875 NL80211_FLAG_NEED_RTNL,
6876 },
6877 {
6878 .cmd = NL80211_CMD_SET_NOACK_MAP,
6879 .doit = nl80211_set_noack_map,
6880 .policy = nl80211_policy,
6881 .flags = GENL_ADMIN_PERM,
6882 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6883 NL80211_FLAG_NEED_RTNL,
6884 },
6885
6886 };
6887
6888 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6889 .name = "mlme",
6890 };
6891
6892 /* multicast groups */
6893 static struct genl_multicast_group nl80211_config_mcgrp = {
6894 .name = "config",
6895 };
6896 static struct genl_multicast_group nl80211_scan_mcgrp = {
6897 .name = "scan",
6898 };
6899 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6900 .name = "regulatory",
6901 };
6902
6903 /* notification functions */
6904
6905 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6906 {
6907 struct sk_buff *msg;
6908
6909 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6910 if (!msg)
6911 return;
6912
6913 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6914 nlmsg_free(msg);
6915 return;
6916 }
6917
6918 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6919 nl80211_config_mcgrp.id, GFP_KERNEL);
6920 }
6921
6922 static int nl80211_add_scan_req(struct sk_buff *msg,
6923 struct cfg80211_registered_device *rdev)
6924 {
6925 struct cfg80211_scan_request *req = rdev->scan_req;
6926 struct nlattr *nest;
6927 int i;
6928
6929 ASSERT_RDEV_LOCK(rdev);
6930
6931 if (WARN_ON(!req))
6932 return 0;
6933
6934 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6935 if (!nest)
6936 goto nla_put_failure;
6937 for (i = 0; i < req->n_ssids; i++)
6938 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6939 nla_nest_end(msg, nest);
6940
6941 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6942 if (!nest)
6943 goto nla_put_failure;
6944 for (i = 0; i < req->n_channels; i++)
6945 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6946 nla_nest_end(msg, nest);
6947
6948 if (req->ie)
6949 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6950
6951 return 0;
6952 nla_put_failure:
6953 return -ENOBUFS;
6954 }
6955
6956 static int nl80211_send_scan_msg(struct sk_buff *msg,
6957 struct cfg80211_registered_device *rdev,
6958 struct net_device *netdev,
6959 u32 pid, u32 seq, int flags,
6960 u32 cmd)
6961 {
6962 void *hdr;
6963
6964 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6965 if (!hdr)
6966 return -1;
6967
6968 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6969 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6970
6971 /* ignore errors and send incomplete event anyway */
6972 nl80211_add_scan_req(msg, rdev);
6973
6974 return genlmsg_end(msg, hdr);
6975
6976 nla_put_failure:
6977 genlmsg_cancel(msg, hdr);
6978 return -EMSGSIZE;
6979 }
6980
6981 static int
6982 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6983 struct cfg80211_registered_device *rdev,
6984 struct net_device *netdev,
6985 u32 pid, u32 seq, int flags, u32 cmd)
6986 {
6987 void *hdr;
6988
6989 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6990 if (!hdr)
6991 return -1;
6992
6993 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6994 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6995
6996 return genlmsg_end(msg, hdr);
6997
6998 nla_put_failure:
6999 genlmsg_cancel(msg, hdr);
7000 return -EMSGSIZE;
7001 }
7002
7003 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7004 struct net_device *netdev)
7005 {
7006 struct sk_buff *msg;
7007
7008 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7009 if (!msg)
7010 return;
7011
7012 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7013 NL80211_CMD_TRIGGER_SCAN) < 0) {
7014 nlmsg_free(msg);
7015 return;
7016 }
7017
7018 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7019 nl80211_scan_mcgrp.id, GFP_KERNEL);
7020 }
7021
7022 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7023 struct net_device *netdev)
7024 {
7025 struct sk_buff *msg;
7026
7027 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7028 if (!msg)
7029 return;
7030
7031 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7032 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7033 nlmsg_free(msg);
7034 return;
7035 }
7036
7037 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7038 nl80211_scan_mcgrp.id, GFP_KERNEL);
7039 }
7040
7041 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7042 struct net_device *netdev)
7043 {
7044 struct sk_buff *msg;
7045
7046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7047 if (!msg)
7048 return;
7049
7050 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7051 NL80211_CMD_SCAN_ABORTED) < 0) {
7052 nlmsg_free(msg);
7053 return;
7054 }
7055
7056 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7057 nl80211_scan_mcgrp.id, GFP_KERNEL);
7058 }
7059
7060 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7061 struct net_device *netdev)
7062 {
7063 struct sk_buff *msg;
7064
7065 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7066 if (!msg)
7067 return;
7068
7069 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7070 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7071 nlmsg_free(msg);
7072 return;
7073 }
7074
7075 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7076 nl80211_scan_mcgrp.id, GFP_KERNEL);
7077 }
7078
7079 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7080 struct net_device *netdev, u32 cmd)
7081 {
7082 struct sk_buff *msg;
7083
7084 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7085 if (!msg)
7086 return;
7087
7088 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7089 nlmsg_free(msg);
7090 return;
7091 }
7092
7093 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7094 nl80211_scan_mcgrp.id, GFP_KERNEL);
7095 }
7096
7097 /*
7098 * This can happen on global regulatory changes or device specific settings
7099 * based on custom world regulatory domains.
7100 */
7101 void nl80211_send_reg_change_event(struct regulatory_request *request)
7102 {
7103 struct sk_buff *msg;
7104 void *hdr;
7105
7106 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7107 if (!msg)
7108 return;
7109
7110 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7111 if (!hdr) {
7112 nlmsg_free(msg);
7113 return;
7114 }
7115
7116 /* Userspace can always count this one always being set */
7117 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
7118
7119 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
7120 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7121 NL80211_REGDOM_TYPE_WORLD);
7122 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
7123 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7124 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
7125 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7126 request->intersect)
7127 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7128 NL80211_REGDOM_TYPE_INTERSECTION);
7129 else {
7130 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7131 NL80211_REGDOM_TYPE_COUNTRY);
7132 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
7133 }
7134
7135 if (wiphy_idx_valid(request->wiphy_idx))
7136 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
7137
7138 genlmsg_end(msg, hdr);
7139
7140 rcu_read_lock();
7141 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7142 GFP_ATOMIC);
7143 rcu_read_unlock();
7144
7145 return;
7146
7147 nla_put_failure:
7148 genlmsg_cancel(msg, hdr);
7149 nlmsg_free(msg);
7150 }
7151
7152 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7153 struct net_device *netdev,
7154 const u8 *buf, size_t len,
7155 enum nl80211_commands cmd, gfp_t gfp)
7156 {
7157 struct sk_buff *msg;
7158 void *hdr;
7159
7160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7161 if (!msg)
7162 return;
7163
7164 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7165 if (!hdr) {
7166 nlmsg_free(msg);
7167 return;
7168 }
7169
7170 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7171 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7172 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7173
7174 genlmsg_end(msg, hdr);
7175
7176 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7177 nl80211_mlme_mcgrp.id, gfp);
7178 return;
7179
7180 nla_put_failure:
7181 genlmsg_cancel(msg, hdr);
7182 nlmsg_free(msg);
7183 }
7184
7185 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7186 struct net_device *netdev, const u8 *buf,
7187 size_t len, gfp_t gfp)
7188 {
7189 nl80211_send_mlme_event(rdev, netdev, buf, len,
7190 NL80211_CMD_AUTHENTICATE, gfp);
7191 }
7192
7193 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7194 struct net_device *netdev, const u8 *buf,
7195 size_t len, gfp_t gfp)
7196 {
7197 nl80211_send_mlme_event(rdev, netdev, buf, len,
7198 NL80211_CMD_ASSOCIATE, gfp);
7199 }
7200
7201 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7202 struct net_device *netdev, const u8 *buf,
7203 size_t len, gfp_t gfp)
7204 {
7205 nl80211_send_mlme_event(rdev, netdev, buf, len,
7206 NL80211_CMD_DEAUTHENTICATE, gfp);
7207 }
7208
7209 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7210 struct net_device *netdev, const u8 *buf,
7211 size_t len, gfp_t gfp)
7212 {
7213 nl80211_send_mlme_event(rdev, netdev, buf, len,
7214 NL80211_CMD_DISASSOCIATE, gfp);
7215 }
7216
7217 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7218 struct net_device *netdev, const u8 *buf,
7219 size_t len, gfp_t gfp)
7220 {
7221 nl80211_send_mlme_event(rdev, netdev, buf, len,
7222 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7223 }
7224
7225 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7226 struct net_device *netdev, const u8 *buf,
7227 size_t len, gfp_t gfp)
7228 {
7229 nl80211_send_mlme_event(rdev, netdev, buf, len,
7230 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7231 }
7232
7233 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7234 struct net_device *netdev, int cmd,
7235 const u8 *addr, gfp_t gfp)
7236 {
7237 struct sk_buff *msg;
7238 void *hdr;
7239
7240 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7241 if (!msg)
7242 return;
7243
7244 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7245 if (!hdr) {
7246 nlmsg_free(msg);
7247 return;
7248 }
7249
7250 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7251 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7252 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
7253 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7254
7255 genlmsg_end(msg, hdr);
7256
7257 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7258 nl80211_mlme_mcgrp.id, gfp);
7259 return;
7260
7261 nla_put_failure:
7262 genlmsg_cancel(msg, hdr);
7263 nlmsg_free(msg);
7264 }
7265
7266 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7267 struct net_device *netdev, const u8 *addr,
7268 gfp_t gfp)
7269 {
7270 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7271 addr, gfp);
7272 }
7273
7274 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7275 struct net_device *netdev, const u8 *addr,
7276 gfp_t gfp)
7277 {
7278 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7279 addr, gfp);
7280 }
7281
7282 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7283 struct net_device *netdev, const u8 *bssid,
7284 const u8 *req_ie, size_t req_ie_len,
7285 const u8 *resp_ie, size_t resp_ie_len,
7286 u16 status, gfp_t gfp)
7287 {
7288 struct sk_buff *msg;
7289 void *hdr;
7290
7291 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7292 if (!msg)
7293 return;
7294
7295 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7296 if (!hdr) {
7297 nlmsg_free(msg);
7298 return;
7299 }
7300
7301 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7302 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7303 if (bssid)
7304 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7305 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
7306 if (req_ie)
7307 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7308 if (resp_ie)
7309 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7310
7311 genlmsg_end(msg, hdr);
7312
7313 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7314 nl80211_mlme_mcgrp.id, gfp);
7315 return;
7316
7317 nla_put_failure:
7318 genlmsg_cancel(msg, hdr);
7319 nlmsg_free(msg);
7320
7321 }
7322
7323 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7324 struct net_device *netdev, const u8 *bssid,
7325 const u8 *req_ie, size_t req_ie_len,
7326 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7327 {
7328 struct sk_buff *msg;
7329 void *hdr;
7330
7331 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7332 if (!msg)
7333 return;
7334
7335 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7336 if (!hdr) {
7337 nlmsg_free(msg);
7338 return;
7339 }
7340
7341 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7342 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7343 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7344 if (req_ie)
7345 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7346 if (resp_ie)
7347 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7348
7349 genlmsg_end(msg, hdr);
7350
7351 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7352 nl80211_mlme_mcgrp.id, gfp);
7353 return;
7354
7355 nla_put_failure:
7356 genlmsg_cancel(msg, hdr);
7357 nlmsg_free(msg);
7358
7359 }
7360
7361 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7362 struct net_device *netdev, u16 reason,
7363 const u8 *ie, size_t ie_len, bool from_ap)
7364 {
7365 struct sk_buff *msg;
7366 void *hdr;
7367
7368 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7369 if (!msg)
7370 return;
7371
7372 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7373 if (!hdr) {
7374 nlmsg_free(msg);
7375 return;
7376 }
7377
7378 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7379 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7380 if (from_ap && reason)
7381 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
7382 if (from_ap)
7383 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
7384 if (ie)
7385 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
7386
7387 genlmsg_end(msg, hdr);
7388
7389 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7390 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7391 return;
7392
7393 nla_put_failure:
7394 genlmsg_cancel(msg, hdr);
7395 nlmsg_free(msg);
7396
7397 }
7398
7399 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7400 struct net_device *netdev, const u8 *bssid,
7401 gfp_t gfp)
7402 {
7403 struct sk_buff *msg;
7404 void *hdr;
7405
7406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7407 if (!msg)
7408 return;
7409
7410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7411 if (!hdr) {
7412 nlmsg_free(msg);
7413 return;
7414 }
7415
7416 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7417 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7418 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7419
7420 genlmsg_end(msg, hdr);
7421
7422 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7423 nl80211_mlme_mcgrp.id, gfp);
7424 return;
7425
7426 nla_put_failure:
7427 genlmsg_cancel(msg, hdr);
7428 nlmsg_free(msg);
7429 }
7430
7431 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7432 struct net_device *netdev,
7433 const u8 *macaddr, const u8* ie, u8 ie_len,
7434 gfp_t gfp)
7435 {
7436 struct sk_buff *msg;
7437 void *hdr;
7438
7439 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7440 if (!msg)
7441 return;
7442
7443 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7444 if (!hdr) {
7445 nlmsg_free(msg);
7446 return;
7447 }
7448
7449 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7450 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7451 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
7452 if (ie_len && ie)
7453 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
7454
7455 genlmsg_end(msg, hdr);
7456
7457 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7458 nl80211_mlme_mcgrp.id, gfp);
7459 return;
7460
7461 nla_put_failure:
7462 genlmsg_cancel(msg, hdr);
7463 nlmsg_free(msg);
7464 }
7465
7466 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7467 struct net_device *netdev, const u8 *addr,
7468 enum nl80211_key_type key_type, int key_id,
7469 const u8 *tsc, gfp_t gfp)
7470 {
7471 struct sk_buff *msg;
7472 void *hdr;
7473
7474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7475 if (!msg)
7476 return;
7477
7478 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7479 if (!hdr) {
7480 nlmsg_free(msg);
7481 return;
7482 }
7483
7484 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7485 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7486 if (addr)
7487 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7488 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7489 if (key_id != -1)
7490 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7491 if (tsc)
7492 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7493
7494 genlmsg_end(msg, hdr);
7495
7496 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7497 nl80211_mlme_mcgrp.id, gfp);
7498 return;
7499
7500 nla_put_failure:
7501 genlmsg_cancel(msg, hdr);
7502 nlmsg_free(msg);
7503 }
7504
7505 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7506 struct ieee80211_channel *channel_before,
7507 struct ieee80211_channel *channel_after)
7508 {
7509 struct sk_buff *msg;
7510 void *hdr;
7511 struct nlattr *nl_freq;
7512
7513 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7514 if (!msg)
7515 return;
7516
7517 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7518 if (!hdr) {
7519 nlmsg_free(msg);
7520 return;
7521 }
7522
7523 /*
7524 * Since we are applying the beacon hint to a wiphy we know its
7525 * wiphy_idx is valid
7526 */
7527 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7528
7529 /* Before */
7530 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7531 if (!nl_freq)
7532 goto nla_put_failure;
7533 if (nl80211_msg_put_channel(msg, channel_before))
7534 goto nla_put_failure;
7535 nla_nest_end(msg, nl_freq);
7536
7537 /* After */
7538 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7539 if (!nl_freq)
7540 goto nla_put_failure;
7541 if (nl80211_msg_put_channel(msg, channel_after))
7542 goto nla_put_failure;
7543 nla_nest_end(msg, nl_freq);
7544
7545 genlmsg_end(msg, hdr);
7546
7547 rcu_read_lock();
7548 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7549 GFP_ATOMIC);
7550 rcu_read_unlock();
7551
7552 return;
7553
7554 nla_put_failure:
7555 genlmsg_cancel(msg, hdr);
7556 nlmsg_free(msg);
7557 }
7558
7559 static void nl80211_send_remain_on_chan_event(
7560 int cmd, struct cfg80211_registered_device *rdev,
7561 struct net_device *netdev, u64 cookie,
7562 struct ieee80211_channel *chan,
7563 enum nl80211_channel_type channel_type,
7564 unsigned int duration, gfp_t gfp)
7565 {
7566 struct sk_buff *msg;
7567 void *hdr;
7568
7569 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7570 if (!msg)
7571 return;
7572
7573 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7574 if (!hdr) {
7575 nlmsg_free(msg);
7576 return;
7577 }
7578
7579 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7580 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7581 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7582 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7583 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7584
7585 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7586 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7587
7588 genlmsg_end(msg, hdr);
7589
7590 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7591 nl80211_mlme_mcgrp.id, gfp);
7592 return;
7593
7594 nla_put_failure:
7595 genlmsg_cancel(msg, hdr);
7596 nlmsg_free(msg);
7597 }
7598
7599 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7600 struct net_device *netdev, u64 cookie,
7601 struct ieee80211_channel *chan,
7602 enum nl80211_channel_type channel_type,
7603 unsigned int duration, gfp_t gfp)
7604 {
7605 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7606 rdev, netdev, cookie, chan,
7607 channel_type, duration, gfp);
7608 }
7609
7610 void nl80211_send_remain_on_channel_cancel(
7611 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7612 u64 cookie, struct ieee80211_channel *chan,
7613 enum nl80211_channel_type channel_type, gfp_t gfp)
7614 {
7615 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7616 rdev, netdev, cookie, chan,
7617 channel_type, 0, gfp);
7618 }
7619
7620 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7621 struct net_device *dev, const u8 *mac_addr,
7622 struct station_info *sinfo, gfp_t gfp)
7623 {
7624 struct sk_buff *msg;
7625
7626 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7627 if (!msg)
7628 return;
7629
7630 if (nl80211_send_station(msg, 0, 0, 0,
7631 rdev, dev, mac_addr, sinfo) < 0) {
7632 nlmsg_free(msg);
7633 return;
7634 }
7635
7636 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7637 nl80211_mlme_mcgrp.id, gfp);
7638 }
7639
7640 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7641 struct net_device *dev, const u8 *mac_addr,
7642 gfp_t gfp)
7643 {
7644 struct sk_buff *msg;
7645 void *hdr;
7646
7647 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7648 if (!msg)
7649 return;
7650
7651 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7652 if (!hdr) {
7653 nlmsg_free(msg);
7654 return;
7655 }
7656
7657 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7658 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7659
7660 genlmsg_end(msg, hdr);
7661
7662 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7663 nl80211_mlme_mcgrp.id, gfp);
7664 return;
7665
7666 nla_put_failure:
7667 genlmsg_cancel(msg, hdr);
7668 nlmsg_free(msg);
7669 }
7670
7671 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
7672 const u8 *addr, gfp_t gfp)
7673 {
7674 struct wireless_dev *wdev = dev->ieee80211_ptr;
7675 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7676 struct sk_buff *msg;
7677 void *hdr;
7678 int err;
7679 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
7680
7681 if (!nlpid)
7682 return false;
7683
7684 msg = nlmsg_new(100, gfp);
7685 if (!msg)
7686 return true;
7687
7688 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7689 if (!hdr) {
7690 nlmsg_free(msg);
7691 return true;
7692 }
7693
7694 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7695 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7696 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7697
7698 err = genlmsg_end(msg, hdr);
7699 if (err < 0) {
7700 nlmsg_free(msg);
7701 return true;
7702 }
7703
7704 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7705 return true;
7706
7707 nla_put_failure:
7708 genlmsg_cancel(msg, hdr);
7709 nlmsg_free(msg);
7710 return true;
7711 }
7712
7713 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
7714 {
7715 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
7716 addr, gfp);
7717 }
7718
7719 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
7720 const u8 *addr, gfp_t gfp)
7721 {
7722 return __nl80211_unexpected_frame(dev,
7723 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
7724 addr, gfp);
7725 }
7726
7727 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7728 struct net_device *netdev, u32 nlpid,
7729 int freq, int sig_dbm,
7730 const u8 *buf, size_t len, gfp_t gfp)
7731 {
7732 struct sk_buff *msg;
7733 void *hdr;
7734
7735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7736 if (!msg)
7737 return -ENOMEM;
7738
7739 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7740 if (!hdr) {
7741 nlmsg_free(msg);
7742 return -ENOMEM;
7743 }
7744
7745 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7746 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7747 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7748 if (sig_dbm)
7749 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
7750 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7751
7752 genlmsg_end(msg, hdr);
7753
7754 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7755
7756 nla_put_failure:
7757 genlmsg_cancel(msg, hdr);
7758 nlmsg_free(msg);
7759 return -ENOBUFS;
7760 }
7761
7762 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7763 struct net_device *netdev, u64 cookie,
7764 const u8 *buf, size_t len, bool ack,
7765 gfp_t gfp)
7766 {
7767 struct sk_buff *msg;
7768 void *hdr;
7769
7770 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7771 if (!msg)
7772 return;
7773
7774 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7775 if (!hdr) {
7776 nlmsg_free(msg);
7777 return;
7778 }
7779
7780 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7781 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7782 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7783 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7784 if (ack)
7785 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7786
7787 genlmsg_end(msg, hdr);
7788
7789 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7790 return;
7791
7792 nla_put_failure:
7793 genlmsg_cancel(msg, hdr);
7794 nlmsg_free(msg);
7795 }
7796
7797 void
7798 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7799 struct net_device *netdev,
7800 enum nl80211_cqm_rssi_threshold_event rssi_event,
7801 gfp_t gfp)
7802 {
7803 struct sk_buff *msg;
7804 struct nlattr *pinfoattr;
7805 void *hdr;
7806
7807 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7808 if (!msg)
7809 return;
7810
7811 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7812 if (!hdr) {
7813 nlmsg_free(msg);
7814 return;
7815 }
7816
7817 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7818 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7819
7820 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7821 if (!pinfoattr)
7822 goto nla_put_failure;
7823
7824 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7825 rssi_event);
7826
7827 nla_nest_end(msg, pinfoattr);
7828
7829 genlmsg_end(msg, hdr);
7830
7831 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7832 nl80211_mlme_mcgrp.id, gfp);
7833 return;
7834
7835 nla_put_failure:
7836 genlmsg_cancel(msg, hdr);
7837 nlmsg_free(msg);
7838 }
7839
7840 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7841 struct net_device *netdev, const u8 *bssid,
7842 const u8 *replay_ctr, gfp_t gfp)
7843 {
7844 struct sk_buff *msg;
7845 struct nlattr *rekey_attr;
7846 void *hdr;
7847
7848 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7849 if (!msg)
7850 return;
7851
7852 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7853 if (!hdr) {
7854 nlmsg_free(msg);
7855 return;
7856 }
7857
7858 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7859 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7860 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7861
7862 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7863 if (!rekey_attr)
7864 goto nla_put_failure;
7865
7866 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7867 NL80211_REPLAY_CTR_LEN, replay_ctr);
7868
7869 nla_nest_end(msg, rekey_attr);
7870
7871 genlmsg_end(msg, hdr);
7872
7873 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7874 nl80211_mlme_mcgrp.id, gfp);
7875 return;
7876
7877 nla_put_failure:
7878 genlmsg_cancel(msg, hdr);
7879 nlmsg_free(msg);
7880 }
7881
7882 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7883 struct net_device *netdev, int index,
7884 const u8 *bssid, bool preauth, gfp_t gfp)
7885 {
7886 struct sk_buff *msg;
7887 struct nlattr *attr;
7888 void *hdr;
7889
7890 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7891 if (!msg)
7892 return;
7893
7894 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7895 if (!hdr) {
7896 nlmsg_free(msg);
7897 return;
7898 }
7899
7900 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7901 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7902
7903 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7904 if (!attr)
7905 goto nla_put_failure;
7906
7907 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7908 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7909 if (preauth)
7910 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7911
7912 nla_nest_end(msg, attr);
7913
7914 genlmsg_end(msg, hdr);
7915
7916 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7917 nl80211_mlme_mcgrp.id, gfp);
7918 return;
7919
7920 nla_put_failure:
7921 genlmsg_cancel(msg, hdr);
7922 nlmsg_free(msg);
7923 }
7924
7925 void
7926 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7927 struct net_device *netdev, const u8 *peer,
7928 u32 num_packets, gfp_t gfp)
7929 {
7930 struct sk_buff *msg;
7931 struct nlattr *pinfoattr;
7932 void *hdr;
7933
7934 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7935 if (!msg)
7936 return;
7937
7938 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7939 if (!hdr) {
7940 nlmsg_free(msg);
7941 return;
7942 }
7943
7944 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7945 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7946 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7947
7948 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7949 if (!pinfoattr)
7950 goto nla_put_failure;
7951
7952 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7953
7954 nla_nest_end(msg, pinfoattr);
7955
7956 genlmsg_end(msg, hdr);
7957
7958 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7959 nl80211_mlme_mcgrp.id, gfp);
7960 return;
7961
7962 nla_put_failure:
7963 genlmsg_cancel(msg, hdr);
7964 nlmsg_free(msg);
7965 }
7966
7967 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
7968 u64 cookie, bool acked, gfp_t gfp)
7969 {
7970 struct wireless_dev *wdev = dev->ieee80211_ptr;
7971 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7972 struct sk_buff *msg;
7973 void *hdr;
7974 int err;
7975
7976 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7977 if (!msg)
7978 return;
7979
7980 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
7981 if (!hdr) {
7982 nlmsg_free(msg);
7983 return;
7984 }
7985
7986 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7987 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7988 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7989 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7990 if (acked)
7991 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7992
7993 err = genlmsg_end(msg, hdr);
7994 if (err < 0) {
7995 nlmsg_free(msg);
7996 return;
7997 }
7998
7999 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8000 nl80211_mlme_mcgrp.id, gfp);
8001 return;
8002
8003 nla_put_failure:
8004 genlmsg_cancel(msg, hdr);
8005 nlmsg_free(msg);
8006 }
8007 EXPORT_SYMBOL(cfg80211_probe_status);
8008
8009 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8010 const u8 *frame, size_t len,
8011 int freq, int sig_dbm, gfp_t gfp)
8012 {
8013 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8014 struct sk_buff *msg;
8015 void *hdr;
8016 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
8017
8018 if (!nlpid)
8019 return;
8020
8021 msg = nlmsg_new(len + 100, gfp);
8022 if (!msg)
8023 return;
8024
8025 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8026 if (!hdr) {
8027 nlmsg_free(msg);
8028 return;
8029 }
8030
8031 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
8032 if (freq)
8033 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8034 if (sig_dbm)
8035 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
8036 NLA_PUT(msg, NL80211_ATTR_FRAME, len, frame);
8037
8038 genlmsg_end(msg, hdr);
8039
8040 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8041 return;
8042
8043 nla_put_failure:
8044 genlmsg_cancel(msg, hdr);
8045 nlmsg_free(msg);
8046 }
8047 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8048
8049 static int nl80211_netlink_notify(struct notifier_block * nb,
8050 unsigned long state,
8051 void *_notify)
8052 {
8053 struct netlink_notify *notify = _notify;
8054 struct cfg80211_registered_device *rdev;
8055 struct wireless_dev *wdev;
8056
8057 if (state != NETLINK_URELEASE)
8058 return NOTIFY_DONE;
8059
8060 rcu_read_lock();
8061
8062 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8063 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8064 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8065 if (rdev->ap_beacons_nlpid == notify->pid)
8066 rdev->ap_beacons_nlpid = 0;
8067 }
8068
8069 rcu_read_unlock();
8070
8071 return NOTIFY_DONE;
8072 }
8073
8074 static struct notifier_block nl80211_netlink_notifier = {
8075 .notifier_call = nl80211_netlink_notify,
8076 };
8077
8078 /* initialisation/exit functions */
8079
8080 int nl80211_init(void)
8081 {
8082 int err;
8083
8084 err = genl_register_family_with_ops(&nl80211_fam,
8085 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8086 if (err)
8087 return err;
8088
8089 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8090 if (err)
8091 goto err_out;
8092
8093 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8094 if (err)
8095 goto err_out;
8096
8097 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8098 if (err)
8099 goto err_out;
8100
8101 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8102 if (err)
8103 goto err_out;
8104
8105 #ifdef CONFIG_NL80211_TESTMODE
8106 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8107 if (err)
8108 goto err_out;
8109 #endif
8110
8111 err = netlink_register_notifier(&nl80211_netlink_notifier);
8112 if (err)
8113 goto err_out;
8114
8115 return 0;
8116 err_out:
8117 genl_unregister_family(&nl80211_fam);
8118 return err;
8119 }
8120
8121 void nl80211_exit(void)
8122 {
8123 netlink_unregister_notifier(&nl80211_netlink_notifier);
8124 genl_unregister_family(&nl80211_fam);
8125 }
kernel source for telekom puls (alcatel/mediatek)