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drm/radeon/hdmi: compile audio status in 1 function
[linux-2.6/libata-dev.git] / net / wireless / nl80211.c
blobf432c57af05d03addc5f856bfff8a784c19f19a1
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_QUEUE] || !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->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
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 return 0;
1119 }
1120
1121 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1122 {
1123 /*
1124 * You can only set the channel explicitly for AP, mesh
1125 * and WDS type interfaces; all others have their channel
1126 * managed via their respective "establish a connection"
1127 * command (connect, join, ...)
1128 *
1129 * Monitors are special as they are normally slaved to
1130 * whatever else is going on, so they behave as though
1131 * you tried setting the wiphy channel itself.
1132 */
1133 return !wdev ||
1134 wdev->iftype == NL80211_IFTYPE_AP ||
1135 wdev->iftype == NL80211_IFTYPE_WDS ||
1136 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1137 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1138 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1139 }
1140
1141 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1142 struct wireless_dev *wdev,
1143 struct genl_info *info)
1144 {
1145 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1146 u32 freq;
1147 int result;
1148
1149 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1150 return -EINVAL;
1151
1152 if (!nl80211_can_set_dev_channel(wdev))
1153 return -EOPNOTSUPP;
1154
1155 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1156 channel_type = nla_get_u32(info->attrs[
1157 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1158 if (channel_type != NL80211_CHAN_NO_HT &&
1159 channel_type != NL80211_CHAN_HT20 &&
1160 channel_type != NL80211_CHAN_HT40PLUS &&
1161 channel_type != NL80211_CHAN_HT40MINUS)
1162 return -EINVAL;
1163 }
1164
1165 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1166
1167 mutex_lock(&rdev->devlist_mtx);
1168 if (wdev) {
1169 wdev_lock(wdev);
1170 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1171 wdev_unlock(wdev);
1172 } else {
1173 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1174 }
1175 mutex_unlock(&rdev->devlist_mtx);
1176
1177 return result;
1178 }
1179
1180 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1181 {
1182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1183 struct net_device *netdev = info->user_ptr[1];
1184
1185 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1186 }
1187
1188 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1189 {
1190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1191 struct net_device *dev = info->user_ptr[1];
1192 struct wireless_dev *wdev = dev->ieee80211_ptr;
1193 const u8 *bssid;
1194
1195 if (!info->attrs[NL80211_ATTR_MAC])
1196 return -EINVAL;
1197
1198 if (netif_running(dev))
1199 return -EBUSY;
1200
1201 if (!rdev->ops->set_wds_peer)
1202 return -EOPNOTSUPP;
1203
1204 if (wdev->iftype != NL80211_IFTYPE_WDS)
1205 return -EOPNOTSUPP;
1206
1207 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1208 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1209 }
1210
1211
1212 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1213 {
1214 struct cfg80211_registered_device *rdev;
1215 struct net_device *netdev = NULL;
1216 struct wireless_dev *wdev;
1217 int result = 0, rem_txq_params = 0;
1218 struct nlattr *nl_txq_params;
1219 u32 changed;
1220 u8 retry_short = 0, retry_long = 0;
1221 u32 frag_threshold = 0, rts_threshold = 0;
1222 u8 coverage_class = 0;
1223
1224 /*
1225 * Try to find the wiphy and netdev. Normally this
1226 * function shouldn't need the netdev, but this is
1227 * done for backward compatibility -- previously
1228 * setting the channel was done per wiphy, but now
1229 * it is per netdev. Previous userland like hostapd
1230 * also passed a netdev to set_wiphy, so that it is
1231 * possible to let that go to the right netdev!
1232 */
1233 mutex_lock(&cfg80211_mutex);
1234
1235 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1236 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1237
1238 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1239 if (netdev && netdev->ieee80211_ptr) {
1240 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1241 mutex_lock(&rdev->mtx);
1242 } else
1243 netdev = NULL;
1244 }
1245
1246 if (!netdev) {
1247 rdev = __cfg80211_rdev_from_info(info);
1248 if (IS_ERR(rdev)) {
1249 mutex_unlock(&cfg80211_mutex);
1250 return PTR_ERR(rdev);
1251 }
1252 wdev = NULL;
1253 netdev = NULL;
1254 result = 0;
1255
1256 mutex_lock(&rdev->mtx);
1257 } else if (netif_running(netdev) &&
1258 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1259 wdev = netdev->ieee80211_ptr;
1260 else
1261 wdev = NULL;
1262
1263 /*
1264 * end workaround code, by now the rdev is available
1265 * and locked, and wdev may or may not be NULL.
1266 */
1267
1268 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1269 result = cfg80211_dev_rename(
1270 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1271
1272 mutex_unlock(&cfg80211_mutex);
1273
1274 if (result)
1275 goto bad_res;
1276
1277 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1278 struct ieee80211_txq_params txq_params;
1279 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1280
1281 if (!rdev->ops->set_txq_params) {
1282 result = -EOPNOTSUPP;
1283 goto bad_res;
1284 }
1285
1286 if (!netdev) {
1287 result = -EINVAL;
1288 goto bad_res;
1289 }
1290
1291 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1292 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1293 result = -EINVAL;
1294 goto bad_res;
1295 }
1296
1297 if (!netif_running(netdev)) {
1298 result = -ENETDOWN;
1299 goto bad_res;
1300 }
1301
1302 nla_for_each_nested(nl_txq_params,
1303 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1304 rem_txq_params) {
1305 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1306 nla_data(nl_txq_params),
1307 nla_len(nl_txq_params),
1308 txq_params_policy);
1309 result = parse_txq_params(tb, &txq_params);
1310 if (result)
1311 goto bad_res;
1312
1313 result = rdev->ops->set_txq_params(&rdev->wiphy,
1314 netdev,
1315 &txq_params);
1316 if (result)
1317 goto bad_res;
1318 }
1319 }
1320
1321 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1322 result = __nl80211_set_channel(rdev, wdev, info);
1323 if (result)
1324 goto bad_res;
1325 }
1326
1327 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1328 enum nl80211_tx_power_setting type;
1329 int idx, mbm = 0;
1330
1331 if (!rdev->ops->set_tx_power) {
1332 result = -EOPNOTSUPP;
1333 goto bad_res;
1334 }
1335
1336 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1337 type = nla_get_u32(info->attrs[idx]);
1338
1339 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1340 (type != NL80211_TX_POWER_AUTOMATIC)) {
1341 result = -EINVAL;
1342 goto bad_res;
1343 }
1344
1345 if (type != NL80211_TX_POWER_AUTOMATIC) {
1346 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1347 mbm = nla_get_u32(info->attrs[idx]);
1348 }
1349
1350 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1351 if (result)
1352 goto bad_res;
1353 }
1354
1355 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1356 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1357 u32 tx_ant, rx_ant;
1358 if ((!rdev->wiphy.available_antennas_tx &&
1359 !rdev->wiphy.available_antennas_rx) ||
1360 !rdev->ops->set_antenna) {
1361 result = -EOPNOTSUPP;
1362 goto bad_res;
1363 }
1364
1365 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1366 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1367
1368 /* reject antenna configurations which don't match the
1369 * available antenna masks, except for the "all" mask */
1370 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1371 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1372 result = -EINVAL;
1373 goto bad_res;
1374 }
1375
1376 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1377 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1378
1379 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1380 if (result)
1381 goto bad_res;
1382 }
1383
1384 changed = 0;
1385
1386 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1387 retry_short = nla_get_u8(
1388 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1389 if (retry_short == 0) {
1390 result = -EINVAL;
1391 goto bad_res;
1392 }
1393 changed |= WIPHY_PARAM_RETRY_SHORT;
1394 }
1395
1396 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1397 retry_long = nla_get_u8(
1398 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1399 if (retry_long == 0) {
1400 result = -EINVAL;
1401 goto bad_res;
1402 }
1403 changed |= WIPHY_PARAM_RETRY_LONG;
1404 }
1405
1406 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1407 frag_threshold = nla_get_u32(
1408 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1409 if (frag_threshold < 256) {
1410 result = -EINVAL;
1411 goto bad_res;
1412 }
1413 if (frag_threshold != (u32) -1) {
1414 /*
1415 * Fragments (apart from the last one) are required to
1416 * have even length. Make the fragmentation code
1417 * simpler by stripping LSB should someone try to use
1418 * odd threshold value.
1419 */
1420 frag_threshold &= ~0x1;
1421 }
1422 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1423 }
1424
1425 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1426 rts_threshold = nla_get_u32(
1427 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1428 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1429 }
1430
1431 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1432 coverage_class = nla_get_u8(
1433 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1434 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1435 }
1436
1437 if (changed) {
1438 u8 old_retry_short, old_retry_long;
1439 u32 old_frag_threshold, old_rts_threshold;
1440 u8 old_coverage_class;
1441
1442 if (!rdev->ops->set_wiphy_params) {
1443 result = -EOPNOTSUPP;
1444 goto bad_res;
1445 }
1446
1447 old_retry_short = rdev->wiphy.retry_short;
1448 old_retry_long = rdev->wiphy.retry_long;
1449 old_frag_threshold = rdev->wiphy.frag_threshold;
1450 old_rts_threshold = rdev->wiphy.rts_threshold;
1451 old_coverage_class = rdev->wiphy.coverage_class;
1452
1453 if (changed & WIPHY_PARAM_RETRY_SHORT)
1454 rdev->wiphy.retry_short = retry_short;
1455 if (changed & WIPHY_PARAM_RETRY_LONG)
1456 rdev->wiphy.retry_long = retry_long;
1457 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1458 rdev->wiphy.frag_threshold = frag_threshold;
1459 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1460 rdev->wiphy.rts_threshold = rts_threshold;
1461 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1462 rdev->wiphy.coverage_class = coverage_class;
1463
1464 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1465 if (result) {
1466 rdev->wiphy.retry_short = old_retry_short;
1467 rdev->wiphy.retry_long = old_retry_long;
1468 rdev->wiphy.frag_threshold = old_frag_threshold;
1469 rdev->wiphy.rts_threshold = old_rts_threshold;
1470 rdev->wiphy.coverage_class = old_coverage_class;
1471 }
1472 }
1473
1474 bad_res:
1475 mutex_unlock(&rdev->mtx);
1476 if (netdev)
1477 dev_put(netdev);
1478 return result;
1479 }
1480
1481
1482 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1483 struct cfg80211_registered_device *rdev,
1484 struct net_device *dev)
1485 {
1486 void *hdr;
1487
1488 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1489 if (!hdr)
1490 return -1;
1491
1492 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1493 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1494 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1495 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1496
1497 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1498 rdev->devlist_generation ^
1499 (cfg80211_rdev_list_generation << 2));
1500
1501 return genlmsg_end(msg, hdr);
1502
1503 nla_put_failure:
1504 genlmsg_cancel(msg, hdr);
1505 return -EMSGSIZE;
1506 }
1507
1508 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1509 {
1510 int wp_idx = 0;
1511 int if_idx = 0;
1512 int wp_start = cb->args[0];
1513 int if_start = cb->args[1];
1514 struct cfg80211_registered_device *rdev;
1515 struct wireless_dev *wdev;
1516
1517 mutex_lock(&cfg80211_mutex);
1518 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1519 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1520 continue;
1521 if (wp_idx < wp_start) {
1522 wp_idx++;
1523 continue;
1524 }
1525 if_idx = 0;
1526
1527 mutex_lock(&rdev->devlist_mtx);
1528 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1529 if (if_idx < if_start) {
1530 if_idx++;
1531 continue;
1532 }
1533 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1534 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1535 rdev, wdev->netdev) < 0) {
1536 mutex_unlock(&rdev->devlist_mtx);
1537 goto out;
1538 }
1539 if_idx++;
1540 }
1541 mutex_unlock(&rdev->devlist_mtx);
1542
1543 wp_idx++;
1544 }
1545 out:
1546 mutex_unlock(&cfg80211_mutex);
1547
1548 cb->args[0] = wp_idx;
1549 cb->args[1] = if_idx;
1550
1551 return skb->len;
1552 }
1553
1554 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1555 {
1556 struct sk_buff *msg;
1557 struct cfg80211_registered_device *dev = info->user_ptr[0];
1558 struct net_device *netdev = info->user_ptr[1];
1559
1560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1561 if (!msg)
1562 return -ENOMEM;
1563
1564 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1565 dev, netdev) < 0) {
1566 nlmsg_free(msg);
1567 return -ENOBUFS;
1568 }
1569
1570 return genlmsg_reply(msg, info);
1571 }
1572
1573 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1574 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1575 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1576 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1577 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1578 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1579 };
1580
1581 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1582 {
1583 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1584 int flag;
1585
1586 *mntrflags = 0;
1587
1588 if (!nla)
1589 return -EINVAL;
1590
1591 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1592 nla, mntr_flags_policy))
1593 return -EINVAL;
1594
1595 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1596 if (flags[flag])
1597 *mntrflags |= (1<<flag);
1598
1599 return 0;
1600 }
1601
1602 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1603 struct net_device *netdev, u8 use_4addr,
1604 enum nl80211_iftype iftype)
1605 {
1606 if (!use_4addr) {
1607 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1608 return -EBUSY;
1609 return 0;
1610 }
1611
1612 switch (iftype) {
1613 case NL80211_IFTYPE_AP_VLAN:
1614 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1615 return 0;
1616 break;
1617 case NL80211_IFTYPE_STATION:
1618 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1619 return 0;
1620 break;
1621 default:
1622 break;
1623 }
1624
1625 return -EOPNOTSUPP;
1626 }
1627
1628 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1629 {
1630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1631 struct vif_params params;
1632 int err;
1633 enum nl80211_iftype otype, ntype;
1634 struct net_device *dev = info->user_ptr[1];
1635 u32 _flags, *flags = NULL;
1636 bool change = false;
1637
1638 memset(&params, 0, sizeof(params));
1639
1640 otype = ntype = dev->ieee80211_ptr->iftype;
1641
1642 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1643 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1644 if (otype != ntype)
1645 change = true;
1646 if (ntype > NL80211_IFTYPE_MAX)
1647 return -EINVAL;
1648 }
1649
1650 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1651 struct wireless_dev *wdev = dev->ieee80211_ptr;
1652
1653 if (ntype != NL80211_IFTYPE_MESH_POINT)
1654 return -EINVAL;
1655 if (netif_running(dev))
1656 return -EBUSY;
1657
1658 wdev_lock(wdev);
1659 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1660 IEEE80211_MAX_MESH_ID_LEN);
1661 wdev->mesh_id_up_len =
1662 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1663 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1664 wdev->mesh_id_up_len);
1665 wdev_unlock(wdev);
1666 }
1667
1668 if (info->attrs[NL80211_ATTR_4ADDR]) {
1669 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1670 change = true;
1671 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1672 if (err)
1673 return err;
1674 } else {
1675 params.use_4addr = -1;
1676 }
1677
1678 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1679 if (ntype != NL80211_IFTYPE_MONITOR)
1680 return -EINVAL;
1681 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1682 &_flags);
1683 if (err)
1684 return err;
1685
1686 flags = &_flags;
1687 change = true;
1688 }
1689
1690 if (change)
1691 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1692 else
1693 err = 0;
1694
1695 if (!err && params.use_4addr != -1)
1696 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1697
1698 return err;
1699 }
1700
1701 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1702 {
1703 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1704 struct vif_params params;
1705 struct net_device *dev;
1706 int err;
1707 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1708 u32 flags;
1709
1710 memset(&params, 0, sizeof(params));
1711
1712 if (!info->attrs[NL80211_ATTR_IFNAME])
1713 return -EINVAL;
1714
1715 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1716 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1717 if (type > NL80211_IFTYPE_MAX)
1718 return -EINVAL;
1719 }
1720
1721 if (!rdev->ops->add_virtual_intf ||
1722 !(rdev->wiphy.interface_modes & (1 << type)))
1723 return -EOPNOTSUPP;
1724
1725 if (info->attrs[NL80211_ATTR_4ADDR]) {
1726 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1727 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1728 if (err)
1729 return err;
1730 }
1731
1732 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1733 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1734 &flags);
1735 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1736 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1737 type, err ? NULL : &flags, &params);
1738 if (IS_ERR(dev))
1739 return PTR_ERR(dev);
1740
1741 if (type == NL80211_IFTYPE_MESH_POINT &&
1742 info->attrs[NL80211_ATTR_MESH_ID]) {
1743 struct wireless_dev *wdev = dev->ieee80211_ptr;
1744
1745 wdev_lock(wdev);
1746 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1747 IEEE80211_MAX_MESH_ID_LEN);
1748 wdev->mesh_id_up_len =
1749 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1750 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1751 wdev->mesh_id_up_len);
1752 wdev_unlock(wdev);
1753 }
1754
1755 return 0;
1756 }
1757
1758 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1759 {
1760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1761 struct net_device *dev = info->user_ptr[1];
1762
1763 if (!rdev->ops->del_virtual_intf)
1764 return -EOPNOTSUPP;
1765
1766 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1767 }
1768
1769 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1770 {
1771 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1772 struct net_device *dev = info->user_ptr[1];
1773 u16 noack_map;
1774
1775 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1776 return -EINVAL;
1777
1778 if (!rdev->ops->set_noack_map)
1779 return -EOPNOTSUPP;
1780
1781 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1782
1783 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1784 }
1785
1786 struct get_key_cookie {
1787 struct sk_buff *msg;
1788 int error;
1789 int idx;
1790 };
1791
1792 static void get_key_callback(void *c, struct key_params *params)
1793 {
1794 struct nlattr *key;
1795 struct get_key_cookie *cookie = c;
1796
1797 if (params->key)
1798 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1799 params->key_len, params->key);
1800
1801 if (params->seq)
1802 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1803 params->seq_len, params->seq);
1804
1805 if (params->cipher)
1806 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1807 params->cipher);
1808
1809 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1810 if (!key)
1811 goto nla_put_failure;
1812
1813 if (params->key)
1814 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1815 params->key_len, params->key);
1816
1817 if (params->seq)
1818 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1819 params->seq_len, params->seq);
1820
1821 if (params->cipher)
1822 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1823 params->cipher);
1824
1825 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1826
1827 nla_nest_end(cookie->msg, key);
1828
1829 return;
1830 nla_put_failure:
1831 cookie->error = 1;
1832 }
1833
1834 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1835 {
1836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1837 int err;
1838 struct net_device *dev = info->user_ptr[1];
1839 u8 key_idx = 0;
1840 const u8 *mac_addr = NULL;
1841 bool pairwise;
1842 struct get_key_cookie cookie = {
1843 .error = 0,
1844 };
1845 void *hdr;
1846 struct sk_buff *msg;
1847
1848 if (info->attrs[NL80211_ATTR_KEY_IDX])
1849 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1850
1851 if (key_idx > 5)
1852 return -EINVAL;
1853
1854 if (info->attrs[NL80211_ATTR_MAC])
1855 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1856
1857 pairwise = !!mac_addr;
1858 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1859 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1860 if (kt >= NUM_NL80211_KEYTYPES)
1861 return -EINVAL;
1862 if (kt != NL80211_KEYTYPE_GROUP &&
1863 kt != NL80211_KEYTYPE_PAIRWISE)
1864 return -EINVAL;
1865 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1866 }
1867
1868 if (!rdev->ops->get_key)
1869 return -EOPNOTSUPP;
1870
1871 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1872 if (!msg)
1873 return -ENOMEM;
1874
1875 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1876 NL80211_CMD_NEW_KEY);
1877 if (IS_ERR(hdr))
1878 return PTR_ERR(hdr);
1879
1880 cookie.msg = msg;
1881 cookie.idx = key_idx;
1882
1883 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1884 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1885 if (mac_addr)
1886 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1887
1888 if (pairwise && mac_addr &&
1889 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1890 return -ENOENT;
1891
1892 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1893 mac_addr, &cookie, get_key_callback);
1894
1895 if (err)
1896 goto free_msg;
1897
1898 if (cookie.error)
1899 goto nla_put_failure;
1900
1901 genlmsg_end(msg, hdr);
1902 return genlmsg_reply(msg, info);
1903
1904 nla_put_failure:
1905 err = -ENOBUFS;
1906 free_msg:
1907 nlmsg_free(msg);
1908 return err;
1909 }
1910
1911 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1912 {
1913 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1914 struct key_parse key;
1915 int err;
1916 struct net_device *dev = info->user_ptr[1];
1917
1918 err = nl80211_parse_key(info, &key);
1919 if (err)
1920 return err;
1921
1922 if (key.idx < 0)
1923 return -EINVAL;
1924
1925 /* only support setting default key */
1926 if (!key.def && !key.defmgmt)
1927 return -EINVAL;
1928
1929 wdev_lock(dev->ieee80211_ptr);
1930
1931 if (key.def) {
1932 if (!rdev->ops->set_default_key) {
1933 err = -EOPNOTSUPP;
1934 goto out;
1935 }
1936
1937 err = nl80211_key_allowed(dev->ieee80211_ptr);
1938 if (err)
1939 goto out;
1940
1941 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1942 key.def_uni, key.def_multi);
1943
1944 if (err)
1945 goto out;
1946
1947 #ifdef CONFIG_CFG80211_WEXT
1948 dev->ieee80211_ptr->wext.default_key = key.idx;
1949 #endif
1950 } else {
1951 if (key.def_uni || !key.def_multi) {
1952 err = -EINVAL;
1953 goto out;
1954 }
1955
1956 if (!rdev->ops->set_default_mgmt_key) {
1957 err = -EOPNOTSUPP;
1958 goto out;
1959 }
1960
1961 err = nl80211_key_allowed(dev->ieee80211_ptr);
1962 if (err)
1963 goto out;
1964
1965 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1966 dev, key.idx);
1967 if (err)
1968 goto out;
1969
1970 #ifdef CONFIG_CFG80211_WEXT
1971 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1972 #endif
1973 }
1974
1975 out:
1976 wdev_unlock(dev->ieee80211_ptr);
1977
1978 return err;
1979 }
1980
1981 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1982 {
1983 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1984 int err;
1985 struct net_device *dev = info->user_ptr[1];
1986 struct key_parse key;
1987 const u8 *mac_addr = NULL;
1988
1989 err = nl80211_parse_key(info, &key);
1990 if (err)
1991 return err;
1992
1993 if (!key.p.key)
1994 return -EINVAL;
1995
1996 if (info->attrs[NL80211_ATTR_MAC])
1997 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1998
1999 if (key.type == -1) {
2000 if (mac_addr)
2001 key.type = NL80211_KEYTYPE_PAIRWISE;
2002 else
2003 key.type = NL80211_KEYTYPE_GROUP;
2004 }
2005
2006 /* for now */
2007 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2008 key.type != NL80211_KEYTYPE_GROUP)
2009 return -EINVAL;
2010
2011 if (!rdev->ops->add_key)
2012 return -EOPNOTSUPP;
2013
2014 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2015 key.type == NL80211_KEYTYPE_PAIRWISE,
2016 mac_addr))
2017 return -EINVAL;
2018
2019 wdev_lock(dev->ieee80211_ptr);
2020 err = nl80211_key_allowed(dev->ieee80211_ptr);
2021 if (!err)
2022 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2023 key.type == NL80211_KEYTYPE_PAIRWISE,
2024 mac_addr, &key.p);
2025 wdev_unlock(dev->ieee80211_ptr);
2026
2027 return err;
2028 }
2029
2030 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2031 {
2032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2033 int err;
2034 struct net_device *dev = info->user_ptr[1];
2035 u8 *mac_addr = NULL;
2036 struct key_parse key;
2037
2038 err = nl80211_parse_key(info, &key);
2039 if (err)
2040 return err;
2041
2042 if (info->attrs[NL80211_ATTR_MAC])
2043 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2044
2045 if (key.type == -1) {
2046 if (mac_addr)
2047 key.type = NL80211_KEYTYPE_PAIRWISE;
2048 else
2049 key.type = NL80211_KEYTYPE_GROUP;
2050 }
2051
2052 /* for now */
2053 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2054 key.type != NL80211_KEYTYPE_GROUP)
2055 return -EINVAL;
2056
2057 if (!rdev->ops->del_key)
2058 return -EOPNOTSUPP;
2059
2060 wdev_lock(dev->ieee80211_ptr);
2061 err = nl80211_key_allowed(dev->ieee80211_ptr);
2062
2063 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2064 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2065 err = -ENOENT;
2066
2067 if (!err)
2068 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2069 key.type == NL80211_KEYTYPE_PAIRWISE,
2070 mac_addr);
2071
2072 #ifdef CONFIG_CFG80211_WEXT
2073 if (!err) {
2074 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2075 dev->ieee80211_ptr->wext.default_key = -1;
2076 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2077 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2078 }
2079 #endif
2080 wdev_unlock(dev->ieee80211_ptr);
2081
2082 return err;
2083 }
2084
2085 static int nl80211_parse_beacon(struct genl_info *info,
2086 struct cfg80211_beacon_data *bcn)
2087 {
2088 bool haveinfo = false;
2089
2090 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2091 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2092 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2093 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2094 return -EINVAL;
2095
2096 memset(bcn, 0, sizeof(*bcn));
2097
2098 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2099 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2100 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2101 if (!bcn->head_len)
2102 return -EINVAL;
2103 haveinfo = true;
2104 }
2105
2106 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2107 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2108 bcn->tail_len =
2109 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2110 haveinfo = true;
2111 }
2112
2113 if (!haveinfo)
2114 return -EINVAL;
2115
2116 if (info->attrs[NL80211_ATTR_IE]) {
2117 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2118 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2119 }
2120
2121 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2122 bcn->proberesp_ies =
2123 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2124 bcn->proberesp_ies_len =
2125 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2126 }
2127
2128 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2129 bcn->assocresp_ies =
2130 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2131 bcn->assocresp_ies_len =
2132 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2133 }
2134
2135 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2136 bcn->probe_resp =
2137 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2138 bcn->probe_resp_len =
2139 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2140 }
2141
2142 return 0;
2143 }
2144
2145 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2146 {
2147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2148 struct net_device *dev = info->user_ptr[1];
2149 struct wireless_dev *wdev = dev->ieee80211_ptr;
2150 struct cfg80211_ap_settings params;
2151 int err;
2152
2153 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2154 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2155 return -EOPNOTSUPP;
2156
2157 if (!rdev->ops->start_ap)
2158 return -EOPNOTSUPP;
2159
2160 if (wdev->beacon_interval)
2161 return -EALREADY;
2162
2163 memset(&params, 0, sizeof(params));
2164
2165 /* these are required for START_AP */
2166 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2167 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2168 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2169 return -EINVAL;
2170
2171 err = nl80211_parse_beacon(info, &params.beacon);
2172 if (err)
2173 return err;
2174
2175 params.beacon_interval =
2176 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2177 params.dtim_period =
2178 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2179
2180 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2181 if (err)
2182 return err;
2183
2184 /*
2185 * In theory, some of these attributes should be required here
2186 * but since they were not used when the command was originally
2187 * added, keep them optional for old user space programs to let
2188 * them continue to work with drivers that do not need the
2189 * additional information -- drivers must check!
2190 */
2191 if (info->attrs[NL80211_ATTR_SSID]) {
2192 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2193 params.ssid_len =
2194 nla_len(info->attrs[NL80211_ATTR_SSID]);
2195 if (params.ssid_len == 0 ||
2196 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2197 return -EINVAL;
2198 }
2199
2200 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2201 params.hidden_ssid = nla_get_u32(
2202 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2203 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2204 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2205 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2206 return -EINVAL;
2207 }
2208
2209 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2210
2211 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2212 params.auth_type = nla_get_u32(
2213 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2214 if (!nl80211_valid_auth_type(params.auth_type))
2215 return -EINVAL;
2216 } else
2217 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2218
2219 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2220 NL80211_MAX_NR_CIPHER_SUITES);
2221 if (err)
2222 return err;
2223
2224 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2225 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2226 return -EOPNOTSUPP;
2227 params.inactivity_timeout = nla_get_u16(
2228 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2229 }
2230
2231 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2232 if (!err)
2233 wdev->beacon_interval = params.beacon_interval;
2234 return err;
2235 }
2236
2237 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2238 {
2239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2240 struct net_device *dev = info->user_ptr[1];
2241 struct wireless_dev *wdev = dev->ieee80211_ptr;
2242 struct cfg80211_beacon_data params;
2243 int err;
2244
2245 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2246 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2247 return -EOPNOTSUPP;
2248
2249 if (!rdev->ops->change_beacon)
2250 return -EOPNOTSUPP;
2251
2252 if (!wdev->beacon_interval)
2253 return -EINVAL;
2254
2255 err = nl80211_parse_beacon(info, &params);
2256 if (err)
2257 return err;
2258
2259 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2260 }
2261
2262 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2263 {
2264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2265 struct net_device *dev = info->user_ptr[1];
2266 struct wireless_dev *wdev = dev->ieee80211_ptr;
2267 int err;
2268
2269 if (!rdev->ops->stop_ap)
2270 return -EOPNOTSUPP;
2271
2272 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2273 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2274 return -EOPNOTSUPP;
2275
2276 if (!wdev->beacon_interval)
2277 return -ENOENT;
2278
2279 err = rdev->ops->stop_ap(&rdev->wiphy, dev);
2280 if (!err)
2281 wdev->beacon_interval = 0;
2282 return err;
2283 }
2284
2285 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2286 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2287 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2288 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2289 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2290 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2291 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2292 };
2293
2294 static int parse_station_flags(struct genl_info *info,
2295 enum nl80211_iftype iftype,
2296 struct station_parameters *params)
2297 {
2298 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2299 struct nlattr *nla;
2300 int flag;
2301
2302 /*
2303 * Try parsing the new attribute first so userspace
2304 * can specify both for older kernels.
2305 */
2306 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2307 if (nla) {
2308 struct nl80211_sta_flag_update *sta_flags;
2309
2310 sta_flags = nla_data(nla);
2311 params->sta_flags_mask = sta_flags->mask;
2312 params->sta_flags_set = sta_flags->set;
2313 if ((params->sta_flags_mask |
2314 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2315 return -EINVAL;
2316 return 0;
2317 }
2318
2319 /* if present, parse the old attribute */
2320
2321 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2322 if (!nla)
2323 return 0;
2324
2325 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2326 nla, sta_flags_policy))
2327 return -EINVAL;
2328
2329 /*
2330 * Only allow certain flags for interface types so that
2331 * other attributes are silently ignored. Remember that
2332 * this is backward compatibility code with old userspace
2333 * and shouldn't be hit in other cases anyway.
2334 */
2335 switch (iftype) {
2336 case NL80211_IFTYPE_AP:
2337 case NL80211_IFTYPE_AP_VLAN:
2338 case NL80211_IFTYPE_P2P_GO:
2339 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2340 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2341 BIT(NL80211_STA_FLAG_WME) |
2342 BIT(NL80211_STA_FLAG_MFP);
2343 break;
2344 case NL80211_IFTYPE_P2P_CLIENT:
2345 case NL80211_IFTYPE_STATION:
2346 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2347 BIT(NL80211_STA_FLAG_TDLS_PEER);
2348 break;
2349 case NL80211_IFTYPE_MESH_POINT:
2350 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2351 BIT(NL80211_STA_FLAG_MFP) |
2352 BIT(NL80211_STA_FLAG_AUTHORIZED);
2353 default:
2354 return -EINVAL;
2355 }
2356
2357 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2358 if (flags[flag])
2359 params->sta_flags_set |= (1<<flag);
2360
2361 return 0;
2362 }
2363
2364 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2365 int attr)
2366 {
2367 struct nlattr *rate;
2368 u16 bitrate;
2369
2370 rate = nla_nest_start(msg, attr);
2371 if (!rate)
2372 goto nla_put_failure;
2373
2374 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2375 bitrate = cfg80211_calculate_bitrate(info);
2376 if (bitrate > 0)
2377 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2378
2379 if (info->flags & RATE_INFO_FLAGS_MCS)
2380 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2381 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2382 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2383 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2384 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2385
2386 nla_nest_end(msg, rate);
2387 return true;
2388
2389 nla_put_failure:
2390 return false;
2391 }
2392
2393 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2394 int flags,
2395 struct cfg80211_registered_device *rdev,
2396 struct net_device *dev,
2397 const u8 *mac_addr, struct station_info *sinfo)
2398 {
2399 void *hdr;
2400 struct nlattr *sinfoattr, *bss_param;
2401
2402 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2403 if (!hdr)
2404 return -1;
2405
2406 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2407 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2408
2409 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2410
2411 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2412 if (!sinfoattr)
2413 goto nla_put_failure;
2414 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2415 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2416 sinfo->connected_time);
2417 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2418 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2419 sinfo->inactive_time);
2420 if (sinfo->filled & STATION_INFO_RX_BYTES)
2421 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2422 sinfo->rx_bytes);
2423 if (sinfo->filled & STATION_INFO_TX_BYTES)
2424 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2425 sinfo->tx_bytes);
2426 if (sinfo->filled & STATION_INFO_LLID)
2427 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2428 sinfo->llid);
2429 if (sinfo->filled & STATION_INFO_PLID)
2430 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2431 sinfo->plid);
2432 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2433 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2434 sinfo->plink_state);
2435 switch (rdev->wiphy.signal_type) {
2436 case CFG80211_SIGNAL_TYPE_MBM:
2437 if (sinfo->filled & STATION_INFO_SIGNAL)
2438 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2439 sinfo->signal);
2440 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2441 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2442 sinfo->signal_avg);
2443 break;
2444 default:
2445 break;
2446 }
2447 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2448 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2449 NL80211_STA_INFO_TX_BITRATE))
2450 goto nla_put_failure;
2451 }
2452 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2453 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2454 NL80211_STA_INFO_RX_BITRATE))
2455 goto nla_put_failure;
2456 }
2457 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2458 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2459 sinfo->rx_packets);
2460 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2461 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2462 sinfo->tx_packets);
2463 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2464 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2465 sinfo->tx_retries);
2466 if (sinfo->filled & STATION_INFO_TX_FAILED)
2467 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2468 sinfo->tx_failed);
2469 if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
2470 NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
2471 sinfo->beacon_loss_count);
2472 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2473 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2474 if (!bss_param)
2475 goto nla_put_failure;
2476
2477 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2478 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2479 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2480 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2481 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2482 NLA_PUT_FLAG(msg,
2483 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2484 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2485 sinfo->bss_param.dtim_period);
2486 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2487 sinfo->bss_param.beacon_interval);
2488
2489 nla_nest_end(msg, bss_param);
2490 }
2491 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2492 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2493 sizeof(struct nl80211_sta_flag_update),
2494 &sinfo->sta_flags);
2495 nla_nest_end(msg, sinfoattr);
2496
2497 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2498 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2499 sinfo->assoc_req_ies);
2500
2501 return genlmsg_end(msg, hdr);
2502
2503 nla_put_failure:
2504 genlmsg_cancel(msg, hdr);
2505 return -EMSGSIZE;
2506 }
2507
2508 static int nl80211_dump_station(struct sk_buff *skb,
2509 struct netlink_callback *cb)
2510 {
2511 struct station_info sinfo;
2512 struct cfg80211_registered_device *dev;
2513 struct net_device *netdev;
2514 u8 mac_addr[ETH_ALEN];
2515 int sta_idx = cb->args[1];
2516 int err;
2517
2518 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2519 if (err)
2520 return err;
2521
2522 if (!dev->ops->dump_station) {
2523 err = -EOPNOTSUPP;
2524 goto out_err;
2525 }
2526
2527 while (1) {
2528 memset(&sinfo, 0, sizeof(sinfo));
2529 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2530 mac_addr, &sinfo);
2531 if (err == -ENOENT)
2532 break;
2533 if (err)
2534 goto out_err;
2535
2536 if (nl80211_send_station(skb,
2537 NETLINK_CB(cb->skb).pid,
2538 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2539 dev, netdev, mac_addr,
2540 &sinfo) < 0)
2541 goto out;
2542
2543 sta_idx++;
2544 }
2545
2546
2547 out:
2548 cb->args[1] = sta_idx;
2549 err = skb->len;
2550 out_err:
2551 nl80211_finish_netdev_dump(dev);
2552
2553 return err;
2554 }
2555
2556 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2557 {
2558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2559 struct net_device *dev = info->user_ptr[1];
2560 struct station_info sinfo;
2561 struct sk_buff *msg;
2562 u8 *mac_addr = NULL;
2563 int err;
2564
2565 memset(&sinfo, 0, sizeof(sinfo));
2566
2567 if (!info->attrs[NL80211_ATTR_MAC])
2568 return -EINVAL;
2569
2570 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2571
2572 if (!rdev->ops->get_station)
2573 return -EOPNOTSUPP;
2574
2575 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2576 if (err)
2577 return err;
2578
2579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2580 if (!msg)
2581 return -ENOMEM;
2582
2583 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2584 rdev, dev, mac_addr, &sinfo) < 0) {
2585 nlmsg_free(msg);
2586 return -ENOBUFS;
2587 }
2588
2589 return genlmsg_reply(msg, info);
2590 }
2591
2592 /*
2593 * Get vlan interface making sure it is running and on the right wiphy.
2594 */
2595 static struct net_device *get_vlan(struct genl_info *info,
2596 struct cfg80211_registered_device *rdev)
2597 {
2598 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2599 struct net_device *v;
2600 int ret;
2601
2602 if (!vlanattr)
2603 return NULL;
2604
2605 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2606 if (!v)
2607 return ERR_PTR(-ENODEV);
2608
2609 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2610 ret = -EINVAL;
2611 goto error;
2612 }
2613
2614 if (!netif_running(v)) {
2615 ret = -ENETDOWN;
2616 goto error;
2617 }
2618
2619 return v;
2620 error:
2621 dev_put(v);
2622 return ERR_PTR(ret);
2623 }
2624
2625 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2626 {
2627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2628 int err;
2629 struct net_device *dev = info->user_ptr[1];
2630 struct station_parameters params;
2631 u8 *mac_addr = NULL;
2632
2633 memset(&params, 0, sizeof(params));
2634
2635 params.listen_interval = -1;
2636 params.plink_state = -1;
2637
2638 if (info->attrs[NL80211_ATTR_STA_AID])
2639 return -EINVAL;
2640
2641 if (!info->attrs[NL80211_ATTR_MAC])
2642 return -EINVAL;
2643
2644 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2645
2646 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2647 params.supported_rates =
2648 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2649 params.supported_rates_len =
2650 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2651 }
2652
2653 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2654 params.listen_interval =
2655 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2656
2657 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2658 params.ht_capa =
2659 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2660
2661 if (!rdev->ops->change_station)
2662 return -EOPNOTSUPP;
2663
2664 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2665 return -EINVAL;
2666
2667 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2668 params.plink_action =
2669 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2670
2671 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2672 params.plink_state =
2673 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2674
2675 switch (dev->ieee80211_ptr->iftype) {
2676 case NL80211_IFTYPE_AP:
2677 case NL80211_IFTYPE_AP_VLAN:
2678 case NL80211_IFTYPE_P2P_GO:
2679 /* disallow mesh-specific things */
2680 if (params.plink_action)
2681 return -EINVAL;
2682
2683 /* TDLS can't be set, ... */
2684 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2685 return -EINVAL;
2686 /*
2687 * ... but don't bother the driver with it. This works around
2688 * a hostapd/wpa_supplicant issue -- it always includes the
2689 * TLDS_PEER flag in the mask even for AP mode.
2690 */
2691 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2692
2693 /* accept only the listed bits */
2694 if (params.sta_flags_mask &
2695 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2696 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2697 BIT(NL80211_STA_FLAG_WME) |
2698 BIT(NL80211_STA_FLAG_MFP)))
2699 return -EINVAL;
2700
2701 /* must be last in here for error handling */
2702 params.vlan = get_vlan(info, rdev);
2703 if (IS_ERR(params.vlan))
2704 return PTR_ERR(params.vlan);
2705 break;
2706 case NL80211_IFTYPE_P2P_CLIENT:
2707 case NL80211_IFTYPE_STATION:
2708 /*
2709 * Don't allow userspace to change the TDLS_PEER flag,
2710 * but silently ignore attempts to change it since we
2711 * don't have state here to verify that it doesn't try
2712 * to change the flag.
2713 */
2714 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2715 /* fall through */
2716 case NL80211_IFTYPE_ADHOC:
2717 /* disallow things sta doesn't support */
2718 if (params.plink_action)
2719 return -EINVAL;
2720 if (params.ht_capa)
2721 return -EINVAL;
2722 if (params.listen_interval >= 0)
2723 return -EINVAL;
2724 /* reject any changes other than AUTHORIZED */
2725 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2726 return -EINVAL;
2727 break;
2728 case NL80211_IFTYPE_MESH_POINT:
2729 /* disallow things mesh doesn't support */
2730 if (params.vlan)
2731 return -EINVAL;
2732 if (params.ht_capa)
2733 return -EINVAL;
2734 if (params.listen_interval >= 0)
2735 return -EINVAL;
2736 /*
2737 * No special handling for TDLS here -- the userspace
2738 * mesh code doesn't have this bug.
2739 */
2740 if (params.sta_flags_mask &
2741 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2742 BIT(NL80211_STA_FLAG_MFP) |
2743 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2744 return -EINVAL;
2745 break;
2746 default:
2747 return -EOPNOTSUPP;
2748 }
2749
2750 /* be aware of params.vlan when changing code here */
2751
2752 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2753
2754 if (params.vlan)
2755 dev_put(params.vlan);
2756
2757 return err;
2758 }
2759
2760 static struct nla_policy
2761 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2762 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2763 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2764 };
2765
2766 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2767 {
2768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2769 int err;
2770 struct net_device *dev = info->user_ptr[1];
2771 struct station_parameters params;
2772 u8 *mac_addr = NULL;
2773
2774 memset(&params, 0, sizeof(params));
2775
2776 if (!info->attrs[NL80211_ATTR_MAC])
2777 return -EINVAL;
2778
2779 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2780 return -EINVAL;
2781
2782 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2783 return -EINVAL;
2784
2785 if (!info->attrs[NL80211_ATTR_STA_AID])
2786 return -EINVAL;
2787
2788 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2789 params.supported_rates =
2790 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2791 params.supported_rates_len =
2792 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2793 params.listen_interval =
2794 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2795
2796 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2797 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2798 return -EINVAL;
2799
2800 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2801 params.ht_capa =
2802 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2803
2804 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2805 params.plink_action =
2806 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2807
2808 if (!rdev->ops->add_station)
2809 return -EOPNOTSUPP;
2810
2811 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2812 return -EINVAL;
2813
2814 switch (dev->ieee80211_ptr->iftype) {
2815 case NL80211_IFTYPE_AP:
2816 case NL80211_IFTYPE_AP_VLAN:
2817 case NL80211_IFTYPE_P2P_GO:
2818 /* parse WME attributes if sta is WME capable */
2819 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2820 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2821 info->attrs[NL80211_ATTR_STA_WME]) {
2822 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2823 struct nlattr *nla;
2824
2825 nla = info->attrs[NL80211_ATTR_STA_WME];
2826 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2827 nl80211_sta_wme_policy);
2828 if (err)
2829 return err;
2830
2831 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2832 params.uapsd_queues =
2833 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2834 if (params.uapsd_queues &
2835 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2836 return -EINVAL;
2837
2838 if (tb[NL80211_STA_WME_MAX_SP])
2839 params.max_sp =
2840 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2841
2842 if (params.max_sp &
2843 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2844 return -EINVAL;
2845
2846 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2847 }
2848 /* TDLS peers cannot be added */
2849 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2850 return -EINVAL;
2851 /* but don't bother the driver with it */
2852 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2853
2854 /* must be last in here for error handling */
2855 params.vlan = get_vlan(info, rdev);
2856 if (IS_ERR(params.vlan))
2857 return PTR_ERR(params.vlan);
2858 break;
2859 case NL80211_IFTYPE_MESH_POINT:
2860 /* TDLS peers cannot be added */
2861 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2862 return -EINVAL;
2863 break;
2864 case NL80211_IFTYPE_STATION:
2865 /* Only TDLS peers can be added */
2866 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2867 return -EINVAL;
2868 /* Can only add if TDLS ... */
2869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
2870 return -EOPNOTSUPP;
2871 /* ... with external setup is supported */
2872 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
2873 return -EOPNOTSUPP;
2874 break;
2875 default:
2876 return -EOPNOTSUPP;
2877 }
2878
2879 /* be aware of params.vlan when changing code here */
2880
2881 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
2882
2883 if (params.vlan)
2884 dev_put(params.vlan);
2885 return err;
2886 }
2887
2888 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2889 {
2890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2891 struct net_device *dev = info->user_ptr[1];
2892 u8 *mac_addr = NULL;
2893
2894 if (info->attrs[NL80211_ATTR_MAC])
2895 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2896
2897 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2898 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2899 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2900 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2901 return -EINVAL;
2902
2903 if (!rdev->ops->del_station)
2904 return -EOPNOTSUPP;
2905
2906 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2907 }
2908
2909 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2910 int flags, struct net_device *dev,
2911 u8 *dst, u8 *next_hop,
2912 struct mpath_info *pinfo)
2913 {
2914 void *hdr;
2915 struct nlattr *pinfoattr;
2916
2917 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2918 if (!hdr)
2919 return -1;
2920
2921 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2922 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2923 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2924
2925 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2926
2927 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2928 if (!pinfoattr)
2929 goto nla_put_failure;
2930 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2931 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2932 pinfo->frame_qlen);
2933 if (pinfo->filled & MPATH_INFO_SN)
2934 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2935 pinfo->sn);
2936 if (pinfo->filled & MPATH_INFO_METRIC)
2937 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2938 pinfo->metric);
2939 if (pinfo->filled & MPATH_INFO_EXPTIME)
2940 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2941 pinfo->exptime);
2942 if (pinfo->filled & MPATH_INFO_FLAGS)
2943 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2944 pinfo->flags);
2945 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2946 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2947 pinfo->discovery_timeout);
2948 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2949 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2950 pinfo->discovery_retries);
2951
2952 nla_nest_end(msg, pinfoattr);
2953
2954 return genlmsg_end(msg, hdr);
2955
2956 nla_put_failure:
2957 genlmsg_cancel(msg, hdr);
2958 return -EMSGSIZE;
2959 }
2960
2961 static int nl80211_dump_mpath(struct sk_buff *skb,
2962 struct netlink_callback *cb)
2963 {
2964 struct mpath_info pinfo;
2965 struct cfg80211_registered_device *dev;
2966 struct net_device *netdev;
2967 u8 dst[ETH_ALEN];
2968 u8 next_hop[ETH_ALEN];
2969 int path_idx = cb->args[1];
2970 int err;
2971
2972 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2973 if (err)
2974 return err;
2975
2976 if (!dev->ops->dump_mpath) {
2977 err = -EOPNOTSUPP;
2978 goto out_err;
2979 }
2980
2981 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2982 err = -EOPNOTSUPP;
2983 goto out_err;
2984 }
2985
2986 while (1) {
2987 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2988 dst, next_hop, &pinfo);
2989 if (err == -ENOENT)
2990 break;
2991 if (err)
2992 goto out_err;
2993
2994 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2995 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2996 netdev, dst, next_hop,
2997 &pinfo) < 0)
2998 goto out;
2999
3000 path_idx++;
3001 }
3002
3003
3004 out:
3005 cb->args[1] = path_idx;
3006 err = skb->len;
3007 out_err:
3008 nl80211_finish_netdev_dump(dev);
3009 return err;
3010 }
3011
3012 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3013 {
3014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3015 int err;
3016 struct net_device *dev = info->user_ptr[1];
3017 struct mpath_info pinfo;
3018 struct sk_buff *msg;
3019 u8 *dst = NULL;
3020 u8 next_hop[ETH_ALEN];
3021
3022 memset(&pinfo, 0, sizeof(pinfo));
3023
3024 if (!info->attrs[NL80211_ATTR_MAC])
3025 return -EINVAL;
3026
3027 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3028
3029 if (!rdev->ops->get_mpath)
3030 return -EOPNOTSUPP;
3031
3032 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3033 return -EOPNOTSUPP;
3034
3035 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3036 if (err)
3037 return err;
3038
3039 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3040 if (!msg)
3041 return -ENOMEM;
3042
3043 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3044 dev, dst, next_hop, &pinfo) < 0) {
3045 nlmsg_free(msg);
3046 return -ENOBUFS;
3047 }
3048
3049 return genlmsg_reply(msg, info);
3050 }
3051
3052 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3053 {
3054 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3055 struct net_device *dev = info->user_ptr[1];
3056 u8 *dst = NULL;
3057 u8 *next_hop = NULL;
3058
3059 if (!info->attrs[NL80211_ATTR_MAC])
3060 return -EINVAL;
3061
3062 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3063 return -EINVAL;
3064
3065 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3066 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3067
3068 if (!rdev->ops->change_mpath)
3069 return -EOPNOTSUPP;
3070
3071 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3072 return -EOPNOTSUPP;
3073
3074 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3075 }
3076
3077 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3078 {
3079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3080 struct net_device *dev = info->user_ptr[1];
3081 u8 *dst = NULL;
3082 u8 *next_hop = NULL;
3083
3084 if (!info->attrs[NL80211_ATTR_MAC])
3085 return -EINVAL;
3086
3087 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3088 return -EINVAL;
3089
3090 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3091 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3092
3093 if (!rdev->ops->add_mpath)
3094 return -EOPNOTSUPP;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3097 return -EOPNOTSUPP;
3098
3099 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3100 }
3101
3102 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3103 {
3104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3105 struct net_device *dev = info->user_ptr[1];
3106 u8 *dst = NULL;
3107
3108 if (info->attrs[NL80211_ATTR_MAC])
3109 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3110
3111 if (!rdev->ops->del_mpath)
3112 return -EOPNOTSUPP;
3113
3114 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3115 }
3116
3117 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3118 {
3119 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3120 struct net_device *dev = info->user_ptr[1];
3121 struct bss_parameters params;
3122
3123 memset(&params, 0, sizeof(params));
3124 /* default to not changing parameters */
3125 params.use_cts_prot = -1;
3126 params.use_short_preamble = -1;
3127 params.use_short_slot_time = -1;
3128 params.ap_isolate = -1;
3129 params.ht_opmode = -1;
3130
3131 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3132 params.use_cts_prot =
3133 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3134 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3135 params.use_short_preamble =
3136 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3137 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3138 params.use_short_slot_time =
3139 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3140 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3141 params.basic_rates =
3142 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3143 params.basic_rates_len =
3144 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3145 }
3146 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3147 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3148 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3149 params.ht_opmode =
3150 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3151
3152 if (!rdev->ops->change_bss)
3153 return -EOPNOTSUPP;
3154
3155 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3156 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3157 return -EOPNOTSUPP;
3158
3159 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3160 }
3161
3162 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3163 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3164 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3165 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3166 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3167 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3168 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3169 };
3170
3171 static int parse_reg_rule(struct nlattr *tb[],
3172 struct ieee80211_reg_rule *reg_rule)
3173 {
3174 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3175 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3176
3177 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3178 return -EINVAL;
3179 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3180 return -EINVAL;
3181 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3182 return -EINVAL;
3183 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3184 return -EINVAL;
3185 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3186 return -EINVAL;
3187
3188 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3189
3190 freq_range->start_freq_khz =
3191 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3192 freq_range->end_freq_khz =
3193 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3194 freq_range->max_bandwidth_khz =
3195 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3196
3197 power_rule->max_eirp =
3198 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3199
3200 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3201 power_rule->max_antenna_gain =
3202 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3203
3204 return 0;
3205 }
3206
3207 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3208 {
3209 int r;
3210 char *data = NULL;
3211
3212 /*
3213 * You should only get this when cfg80211 hasn't yet initialized
3214 * completely when built-in to the kernel right between the time
3215 * window between nl80211_init() and regulatory_init(), if that is
3216 * even possible.
3217 */
3218 mutex_lock(&cfg80211_mutex);
3219 if (unlikely(!cfg80211_regdomain)) {
3220 mutex_unlock(&cfg80211_mutex);
3221 return -EINPROGRESS;
3222 }
3223 mutex_unlock(&cfg80211_mutex);
3224
3225 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3226 return -EINVAL;
3227
3228 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3229
3230 r = regulatory_hint_user(data);
3231
3232 return r;
3233 }
3234
3235 static int nl80211_get_mesh_config(struct sk_buff *skb,
3236 struct genl_info *info)
3237 {
3238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3239 struct net_device *dev = info->user_ptr[1];
3240 struct wireless_dev *wdev = dev->ieee80211_ptr;
3241 struct mesh_config cur_params;
3242 int err = 0;
3243 void *hdr;
3244 struct nlattr *pinfoattr;
3245 struct sk_buff *msg;
3246
3247 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3248 return -EOPNOTSUPP;
3249
3250 if (!rdev->ops->get_mesh_config)
3251 return -EOPNOTSUPP;
3252
3253 wdev_lock(wdev);
3254 /* If not connected, get default parameters */
3255 if (!wdev->mesh_id_len)
3256 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3257 else
3258 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3259 &cur_params);
3260 wdev_unlock(wdev);
3261
3262 if (err)
3263 return err;
3264
3265 /* Draw up a netlink message to send back */
3266 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3267 if (!msg)
3268 return -ENOMEM;
3269 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3270 NL80211_CMD_GET_MESH_CONFIG);
3271 if (!hdr)
3272 goto out;
3273 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3274 if (!pinfoattr)
3275 goto nla_put_failure;
3276 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3277 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3278 cur_params.dot11MeshRetryTimeout);
3279 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3280 cur_params.dot11MeshConfirmTimeout);
3281 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3282 cur_params.dot11MeshHoldingTimeout);
3283 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3284 cur_params.dot11MeshMaxPeerLinks);
3285 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3286 cur_params.dot11MeshMaxRetries);
3287 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3288 cur_params.dot11MeshTTL);
3289 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3290 cur_params.element_ttl);
3291 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3292 cur_params.auto_open_plinks);
3293 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3294 cur_params.dot11MeshHWMPmaxPREQretries);
3295 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3296 cur_params.path_refresh_time);
3297 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3298 cur_params.min_discovery_timeout);
3299 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3300 cur_params.dot11MeshHWMPactivePathTimeout);
3301 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3302 cur_params.dot11MeshHWMPpreqMinInterval);
3303 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3304 cur_params.dot11MeshHWMPperrMinInterval);
3305 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3306 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3307 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3308 cur_params.dot11MeshHWMPRootMode);
3309 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3310 cur_params.dot11MeshHWMPRannInterval);
3311 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3312 cur_params.dot11MeshGateAnnouncementProtocol);
3313 NLA_PUT_U8(msg, NL80211_MESHCONF_FORWARDING,
3314 cur_params.dot11MeshForwarding);
3315 NLA_PUT_U32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3316 cur_params.rssi_threshold);
3317 nla_nest_end(msg, pinfoattr);
3318 genlmsg_end(msg, hdr);
3319 return genlmsg_reply(msg, info);
3320
3321 nla_put_failure:
3322 genlmsg_cancel(msg, hdr);
3323 out:
3324 nlmsg_free(msg);
3325 return -ENOBUFS;
3326 }
3327
3328 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3329 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3330 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3331 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3332 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3333 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3334 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3335 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3336 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3337
3338 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3339 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3340 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3341 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3342 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3343 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3344 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3345 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3346 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3347 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3348 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3349 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32},
3350 };
3351
3352 static const struct nla_policy
3353 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3354 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3355 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3356 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3357 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3358 .len = IEEE80211_MAX_DATA_LEN },
3359 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3360 };
3361
3362 static int nl80211_parse_mesh_config(struct genl_info *info,
3363 struct mesh_config *cfg,
3364 u32 *mask_out)
3365 {
3366 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3367 u32 mask = 0;
3368
3369 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3370 do {\
3371 if (table[attr_num]) {\
3372 cfg->param = nla_fn(table[attr_num]); \
3373 mask |= (1 << (attr_num - 1)); \
3374 } \
3375 } while (0);\
3376
3377
3378 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3379 return -EINVAL;
3380 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3381 info->attrs[NL80211_ATTR_MESH_CONFIG],
3382 nl80211_meshconf_params_policy))
3383 return -EINVAL;
3384
3385 /* This makes sure that there aren't more than 32 mesh config
3386 * parameters (otherwise our bitfield scheme would not work.) */
3387 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3388
3389 /* Fill in the params struct */
3390 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3391 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3392 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3393 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3394 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3395 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3396 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3397 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3398 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3399 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3400 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3401 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3402 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3403 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3404 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3405 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3406 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3407 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3408 nla_get_u8);
3409 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3410 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3411 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3412 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3413 nla_get_u16);
3414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3415 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3416 nla_get_u32);
3417 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3418 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3419 nla_get_u16);
3420 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3421 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3422 nla_get_u16);
3423 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3424 dot11MeshHWMPnetDiameterTraversalTime,
3425 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3426 nla_get_u16);
3427 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3428 dot11MeshHWMPRootMode, mask,
3429 NL80211_MESHCONF_HWMP_ROOTMODE,
3430 nla_get_u8);
3431 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3432 dot11MeshHWMPRannInterval, mask,
3433 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3434 nla_get_u16);
3435 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3436 dot11MeshGateAnnouncementProtocol, mask,
3437 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3438 nla_get_u8);
3439 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3440 mask, NL80211_MESHCONF_FORWARDING, nla_get_u8);
3441 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3442 mask, NL80211_MESHCONF_RSSI_THRESHOLD, nla_get_u32);
3443 if (mask_out)
3444 *mask_out = mask;
3445
3446 return 0;
3447
3448 #undef FILL_IN_MESH_PARAM_IF_SET
3449 }
3450
3451 static int nl80211_parse_mesh_setup(struct genl_info *info,
3452 struct mesh_setup *setup)
3453 {
3454 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3455
3456 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3457 return -EINVAL;
3458 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3459 info->attrs[NL80211_ATTR_MESH_SETUP],
3460 nl80211_mesh_setup_params_policy))
3461 return -EINVAL;
3462
3463 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3464 setup->path_sel_proto =
3465 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3466 IEEE80211_PATH_PROTOCOL_VENDOR :
3467 IEEE80211_PATH_PROTOCOL_HWMP;
3468
3469 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3470 setup->path_metric =
3471 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3472 IEEE80211_PATH_METRIC_VENDOR :
3473 IEEE80211_PATH_METRIC_AIRTIME;
3474
3475
3476 if (tb[NL80211_MESH_SETUP_IE]) {
3477 struct nlattr *ieattr =
3478 tb[NL80211_MESH_SETUP_IE];
3479 if (!is_valid_ie_attr(ieattr))
3480 return -EINVAL;
3481 setup->ie = nla_data(ieattr);
3482 setup->ie_len = nla_len(ieattr);
3483 }
3484 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3485 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3486
3487 return 0;
3488 }
3489
3490 static int nl80211_update_mesh_config(struct sk_buff *skb,
3491 struct genl_info *info)
3492 {
3493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3494 struct net_device *dev = info->user_ptr[1];
3495 struct wireless_dev *wdev = dev->ieee80211_ptr;
3496 struct mesh_config cfg;
3497 u32 mask;
3498 int err;
3499
3500 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3501 return -EOPNOTSUPP;
3502
3503 if (!rdev->ops->update_mesh_config)
3504 return -EOPNOTSUPP;
3505
3506 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3507 if (err)
3508 return err;
3509
3510 wdev_lock(wdev);
3511 if (!wdev->mesh_id_len)
3512 err = -ENOLINK;
3513
3514 if (!err)
3515 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3516 mask, &cfg);
3517
3518 wdev_unlock(wdev);
3519
3520 return err;
3521 }
3522
3523 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3524 {
3525 struct sk_buff *msg;
3526 void *hdr = NULL;
3527 struct nlattr *nl_reg_rules;
3528 unsigned int i;
3529 int err = -EINVAL;
3530
3531 mutex_lock(&cfg80211_mutex);
3532
3533 if (!cfg80211_regdomain)
3534 goto out;
3535
3536 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3537 if (!msg) {
3538 err = -ENOBUFS;
3539 goto out;
3540 }
3541
3542 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3543 NL80211_CMD_GET_REG);
3544 if (!hdr)
3545 goto put_failure;
3546
3547 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3548 cfg80211_regdomain->alpha2);
3549 if (cfg80211_regdomain->dfs_region)
3550 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3551 cfg80211_regdomain->dfs_region);
3552
3553 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3554 if (!nl_reg_rules)
3555 goto nla_put_failure;
3556
3557 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3558 struct nlattr *nl_reg_rule;
3559 const struct ieee80211_reg_rule *reg_rule;
3560 const struct ieee80211_freq_range *freq_range;
3561 const struct ieee80211_power_rule *power_rule;
3562
3563 reg_rule = &cfg80211_regdomain->reg_rules[i];
3564 freq_range = &reg_rule->freq_range;
3565 power_rule = &reg_rule->power_rule;
3566
3567 nl_reg_rule = nla_nest_start(msg, i);
3568 if (!nl_reg_rule)
3569 goto nla_put_failure;
3570
3571 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3572 reg_rule->flags);
3573 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3574 freq_range->start_freq_khz);
3575 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3576 freq_range->end_freq_khz);
3577 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3578 freq_range->max_bandwidth_khz);
3579 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3580 power_rule->max_antenna_gain);
3581 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3582 power_rule->max_eirp);
3583
3584 nla_nest_end(msg, nl_reg_rule);
3585 }
3586
3587 nla_nest_end(msg, nl_reg_rules);
3588
3589 genlmsg_end(msg, hdr);
3590 err = genlmsg_reply(msg, info);
3591 goto out;
3592
3593 nla_put_failure:
3594 genlmsg_cancel(msg, hdr);
3595 put_failure:
3596 nlmsg_free(msg);
3597 err = -EMSGSIZE;
3598 out:
3599 mutex_unlock(&cfg80211_mutex);
3600 return err;
3601 }
3602
3603 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3604 {
3605 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3606 struct nlattr *nl_reg_rule;
3607 char *alpha2 = NULL;
3608 int rem_reg_rules = 0, r = 0;
3609 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3610 u8 dfs_region = 0;
3611 struct ieee80211_regdomain *rd = NULL;
3612
3613 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3614 return -EINVAL;
3615
3616 if (!info->attrs[NL80211_ATTR_REG_RULES])
3617 return -EINVAL;
3618
3619 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3620
3621 if (info->attrs[NL80211_ATTR_DFS_REGION])
3622 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3623
3624 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3625 rem_reg_rules) {
3626 num_rules++;
3627 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3628 return -EINVAL;
3629 }
3630
3631 mutex_lock(&cfg80211_mutex);
3632
3633 if (!reg_is_valid_request(alpha2)) {
3634 r = -EINVAL;
3635 goto bad_reg;
3636 }
3637
3638 size_of_regd = sizeof(struct ieee80211_regdomain) +
3639 (num_rules * sizeof(struct ieee80211_reg_rule));
3640
3641 rd = kzalloc(size_of_regd, GFP_KERNEL);
3642 if (!rd) {
3643 r = -ENOMEM;
3644 goto bad_reg;
3645 }
3646
3647 rd->n_reg_rules = num_rules;
3648 rd->alpha2[0] = alpha2[0];
3649 rd->alpha2[1] = alpha2[1];
3650
3651 /*
3652 * Disable DFS master mode if the DFS region was
3653 * not supported or known on this kernel.
3654 */
3655 if (reg_supported_dfs_region(dfs_region))
3656 rd->dfs_region = dfs_region;
3657
3658 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3659 rem_reg_rules) {
3660 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3661 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3662 reg_rule_policy);
3663 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3664 if (r)
3665 goto bad_reg;
3666
3667 rule_idx++;
3668
3669 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3670 r = -EINVAL;
3671 goto bad_reg;
3672 }
3673 }
3674
3675 BUG_ON(rule_idx != num_rules);
3676
3677 r = set_regdom(rd);
3678
3679 mutex_unlock(&cfg80211_mutex);
3680
3681 return r;
3682
3683 bad_reg:
3684 mutex_unlock(&cfg80211_mutex);
3685 kfree(rd);
3686 return r;
3687 }
3688
3689 static int validate_scan_freqs(struct nlattr *freqs)
3690 {
3691 struct nlattr *attr1, *attr2;
3692 int n_channels = 0, tmp1, tmp2;
3693
3694 nla_for_each_nested(attr1, freqs, tmp1) {
3695 n_channels++;
3696 /*
3697 * Some hardware has a limited channel list for
3698 * scanning, and it is pretty much nonsensical
3699 * to scan for a channel twice, so disallow that
3700 * and don't require drivers to check that the
3701 * channel list they get isn't longer than what
3702 * they can scan, as long as they can scan all
3703 * the channels they registered at once.
3704 */
3705 nla_for_each_nested(attr2, freqs, tmp2)
3706 if (attr1 != attr2 &&
3707 nla_get_u32(attr1) == nla_get_u32(attr2))
3708 return 0;
3709 }
3710
3711 return n_channels;
3712 }
3713
3714 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3715 {
3716 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3717 struct net_device *dev = info->user_ptr[1];
3718 struct cfg80211_scan_request *request;
3719 struct nlattr *attr;
3720 struct wiphy *wiphy;
3721 int err, tmp, n_ssids = 0, n_channels, i;
3722 size_t ie_len;
3723
3724 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3725 return -EINVAL;
3726
3727 wiphy = &rdev->wiphy;
3728
3729 if (!rdev->ops->scan)
3730 return -EOPNOTSUPP;
3731
3732 if (rdev->scan_req)
3733 return -EBUSY;
3734
3735 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3736 n_channels = validate_scan_freqs(
3737 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3738 if (!n_channels)
3739 return -EINVAL;
3740 } else {
3741 enum ieee80211_band band;
3742 n_channels = 0;
3743
3744 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3745 if (wiphy->bands[band])
3746 n_channels += wiphy->bands[band]->n_channels;
3747 }
3748
3749 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3750 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3751 n_ssids++;
3752
3753 if (n_ssids > wiphy->max_scan_ssids)
3754 return -EINVAL;
3755
3756 if (info->attrs[NL80211_ATTR_IE])
3757 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3758 else
3759 ie_len = 0;
3760
3761 if (ie_len > wiphy->max_scan_ie_len)
3762 return -EINVAL;
3763
3764 request = kzalloc(sizeof(*request)
3765 + sizeof(*request->ssids) * n_ssids
3766 + sizeof(*request->channels) * n_channels
3767 + ie_len, GFP_KERNEL);
3768 if (!request)
3769 return -ENOMEM;
3770
3771 if (n_ssids)
3772 request->ssids = (void *)&request->channels[n_channels];
3773 request->n_ssids = n_ssids;
3774 if (ie_len) {
3775 if (request->ssids)
3776 request->ie = (void *)(request->ssids + n_ssids);
3777 else
3778 request->ie = (void *)(request->channels + n_channels);
3779 }
3780
3781 i = 0;
3782 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3783 /* user specified, bail out if channel not found */
3784 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3785 struct ieee80211_channel *chan;
3786
3787 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3788
3789 if (!chan) {
3790 err = -EINVAL;
3791 goto out_free;
3792 }
3793
3794 /* ignore disabled channels */
3795 if (chan->flags & IEEE80211_CHAN_DISABLED)
3796 continue;
3797
3798 request->channels[i] = chan;
3799 i++;
3800 }
3801 } else {
3802 enum ieee80211_band band;
3803
3804 /* all channels */
3805 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3806 int j;
3807 if (!wiphy->bands[band])
3808 continue;
3809 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3810 struct ieee80211_channel *chan;
3811
3812 chan = &wiphy->bands[band]->channels[j];
3813
3814 if (chan->flags & IEEE80211_CHAN_DISABLED)
3815 continue;
3816
3817 request->channels[i] = chan;
3818 i++;
3819 }
3820 }
3821 }
3822
3823 if (!i) {
3824 err = -EINVAL;
3825 goto out_free;
3826 }
3827
3828 request->n_channels = i;
3829
3830 i = 0;
3831 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3832 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3833 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3834 err = -EINVAL;
3835 goto out_free;
3836 }
3837 request->ssids[i].ssid_len = nla_len(attr);
3838 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3839 i++;
3840 }
3841 }
3842
3843 if (info->attrs[NL80211_ATTR_IE]) {
3844 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3845 memcpy((void *)request->ie,
3846 nla_data(info->attrs[NL80211_ATTR_IE]),
3847 request->ie_len);
3848 }
3849
3850 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3851 if (wiphy->bands[i])
3852 request->rates[i] =
3853 (1 << wiphy->bands[i]->n_bitrates) - 1;
3854
3855 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3856 nla_for_each_nested(attr,
3857 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3858 tmp) {
3859 enum ieee80211_band band = nla_type(attr);
3860
3861 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3862 err = -EINVAL;
3863 goto out_free;
3864 }
3865 err = ieee80211_get_ratemask(wiphy->bands[band],
3866 nla_data(attr),
3867 nla_len(attr),
3868 &request->rates[band]);
3869 if (err)
3870 goto out_free;
3871 }
3872 }
3873
3874 request->no_cck =
3875 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3876
3877 request->dev = dev;
3878 request->wiphy = &rdev->wiphy;
3879
3880 rdev->scan_req = request;
3881 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3882
3883 if (!err) {
3884 nl80211_send_scan_start(rdev, dev);
3885 dev_hold(dev);
3886 } else {
3887 out_free:
3888 rdev->scan_req = NULL;
3889 kfree(request);
3890 }
3891
3892 return err;
3893 }
3894
3895 static int nl80211_start_sched_scan(struct sk_buff *skb,
3896 struct genl_info *info)
3897 {
3898 struct cfg80211_sched_scan_request *request;
3899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3900 struct net_device *dev = info->user_ptr[1];
3901 struct nlattr *attr;
3902 struct wiphy *wiphy;
3903 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3904 u32 interval;
3905 enum ieee80211_band band;
3906 size_t ie_len;
3907 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3908
3909 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3910 !rdev->ops->sched_scan_start)
3911 return -EOPNOTSUPP;
3912
3913 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3914 return -EINVAL;
3915
3916 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3917 return -EINVAL;
3918
3919 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3920 if (interval == 0)
3921 return -EINVAL;
3922
3923 wiphy = &rdev->wiphy;
3924
3925 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3926 n_channels = validate_scan_freqs(
3927 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3928 if (!n_channels)
3929 return -EINVAL;
3930 } else {
3931 n_channels = 0;
3932
3933 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3934 if (wiphy->bands[band])
3935 n_channels += wiphy->bands[band]->n_channels;
3936 }
3937
3938 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3939 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3940 tmp)
3941 n_ssids++;
3942
3943 if (n_ssids > wiphy->max_sched_scan_ssids)
3944 return -EINVAL;
3945
3946 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3947 nla_for_each_nested(attr,
3948 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3949 tmp)
3950 n_match_sets++;
3951
3952 if (n_match_sets > wiphy->max_match_sets)
3953 return -EINVAL;
3954
3955 if (info->attrs[NL80211_ATTR_IE])
3956 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3957 else
3958 ie_len = 0;
3959
3960 if (ie_len > wiphy->max_sched_scan_ie_len)
3961 return -EINVAL;
3962
3963 mutex_lock(&rdev->sched_scan_mtx);
3964
3965 if (rdev->sched_scan_req) {
3966 err = -EINPROGRESS;
3967 goto out;
3968 }
3969
3970 request = kzalloc(sizeof(*request)
3971 + sizeof(*request->ssids) * n_ssids
3972 + sizeof(*request->match_sets) * n_match_sets
3973 + sizeof(*request->channels) * n_channels
3974 + ie_len, GFP_KERNEL);
3975 if (!request) {
3976 err = -ENOMEM;
3977 goto out;
3978 }
3979
3980 if (n_ssids)
3981 request->ssids = (void *)&request->channels[n_channels];
3982 request->n_ssids = n_ssids;
3983 if (ie_len) {
3984 if (request->ssids)
3985 request->ie = (void *)(request->ssids + n_ssids);
3986 else
3987 request->ie = (void *)(request->channels + n_channels);
3988 }
3989
3990 if (n_match_sets) {
3991 if (request->ie)
3992 request->match_sets = (void *)(request->ie + ie_len);
3993 else if (request->ssids)
3994 request->match_sets =
3995 (void *)(request->ssids + n_ssids);
3996 else
3997 request->match_sets =
3998 (void *)(request->channels + n_channels);
3999 }
4000 request->n_match_sets = n_match_sets;
4001
4002 i = 0;
4003 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4004 /* user specified, bail out if channel not found */
4005 nla_for_each_nested(attr,
4006 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4007 tmp) {
4008 struct ieee80211_channel *chan;
4009
4010 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4011
4012 if (!chan) {
4013 err = -EINVAL;
4014 goto out_free;
4015 }
4016
4017 /* ignore disabled channels */
4018 if (chan->flags & IEEE80211_CHAN_DISABLED)
4019 continue;
4020
4021 request->channels[i] = chan;
4022 i++;
4023 }
4024 } else {
4025 /* all channels */
4026 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4027 int j;
4028 if (!wiphy->bands[band])
4029 continue;
4030 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4031 struct ieee80211_channel *chan;
4032
4033 chan = &wiphy->bands[band]->channels[j];
4034
4035 if (chan->flags & IEEE80211_CHAN_DISABLED)
4036 continue;
4037
4038 request->channels[i] = chan;
4039 i++;
4040 }
4041 }
4042 }
4043
4044 if (!i) {
4045 err = -EINVAL;
4046 goto out_free;
4047 }
4048
4049 request->n_channels = i;
4050
4051 i = 0;
4052 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4053 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4054 tmp) {
4055 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4056 err = -EINVAL;
4057 goto out_free;
4058 }
4059 request->ssids[i].ssid_len = nla_len(attr);
4060 memcpy(request->ssids[i].ssid, nla_data(attr),
4061 nla_len(attr));
4062 i++;
4063 }
4064 }
4065
4066 i = 0;
4067 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4068 nla_for_each_nested(attr,
4069 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4070 tmp) {
4071 struct nlattr *ssid;
4072
4073 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4074 nla_data(attr), nla_len(attr),
4075 nl80211_match_policy);
4076 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
4077 if (ssid) {
4078 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4079 err = -EINVAL;
4080 goto out_free;
4081 }
4082 memcpy(request->match_sets[i].ssid.ssid,
4083 nla_data(ssid), nla_len(ssid));
4084 request->match_sets[i].ssid.ssid_len =
4085 nla_len(ssid);
4086 }
4087 i++;
4088 }
4089 }
4090
4091 if (info->attrs[NL80211_ATTR_IE]) {
4092 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4093 memcpy((void *)request->ie,
4094 nla_data(info->attrs[NL80211_ATTR_IE]),
4095 request->ie_len);
4096 }
4097
4098 request->dev = dev;
4099 request->wiphy = &rdev->wiphy;
4100 request->interval = interval;
4101
4102 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4103 if (!err) {
4104 rdev->sched_scan_req = request;
4105 nl80211_send_sched_scan(rdev, dev,
4106 NL80211_CMD_START_SCHED_SCAN);
4107 goto out;
4108 }
4109
4110 out_free:
4111 kfree(request);
4112 out:
4113 mutex_unlock(&rdev->sched_scan_mtx);
4114 return err;
4115 }
4116
4117 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4118 struct genl_info *info)
4119 {
4120 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4121 int err;
4122
4123 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4124 !rdev->ops->sched_scan_stop)
4125 return -EOPNOTSUPP;
4126
4127 mutex_lock(&rdev->sched_scan_mtx);
4128 err = __cfg80211_stop_sched_scan(rdev, false);
4129 mutex_unlock(&rdev->sched_scan_mtx);
4130
4131 return err;
4132 }
4133
4134 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4135 u32 seq, int flags,
4136 struct cfg80211_registered_device *rdev,
4137 struct wireless_dev *wdev,
4138 struct cfg80211_internal_bss *intbss)
4139 {
4140 struct cfg80211_bss *res = &intbss->pub;
4141 void *hdr;
4142 struct nlattr *bss;
4143
4144 ASSERT_WDEV_LOCK(wdev);
4145
4146 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4147 NL80211_CMD_NEW_SCAN_RESULTS);
4148 if (!hdr)
4149 return -1;
4150
4151 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4152
4153 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4154 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4155
4156 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4157 if (!bss)
4158 goto nla_put_failure;
4159 if (!is_zero_ether_addr(res->bssid))
4160 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4161 if (res->information_elements && res->len_information_elements)
4162 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4163 res->len_information_elements,
4164 res->information_elements);
4165 if (res->beacon_ies && res->len_beacon_ies &&
4166 res->beacon_ies != res->information_elements)
4167 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4168 res->len_beacon_ies, res->beacon_ies);
4169 if (res->tsf)
4170 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4171 if (res->beacon_interval)
4172 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4173 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4174 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4175 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4176 jiffies_to_msecs(jiffies - intbss->ts));
4177
4178 switch (rdev->wiphy.signal_type) {
4179 case CFG80211_SIGNAL_TYPE_MBM:
4180 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4181 break;
4182 case CFG80211_SIGNAL_TYPE_UNSPEC:
4183 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4184 break;
4185 default:
4186 break;
4187 }
4188
4189 switch (wdev->iftype) {
4190 case NL80211_IFTYPE_P2P_CLIENT:
4191 case NL80211_IFTYPE_STATION:
4192 if (intbss == wdev->current_bss)
4193 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4194 NL80211_BSS_STATUS_ASSOCIATED);
4195 break;
4196 case NL80211_IFTYPE_ADHOC:
4197 if (intbss == wdev->current_bss)
4198 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4199 NL80211_BSS_STATUS_IBSS_JOINED);
4200 break;
4201 default:
4202 break;
4203 }
4204
4205 nla_nest_end(msg, bss);
4206
4207 return genlmsg_end(msg, hdr);
4208
4209 nla_put_failure:
4210 genlmsg_cancel(msg, hdr);
4211 return -EMSGSIZE;
4212 }
4213
4214 static int nl80211_dump_scan(struct sk_buff *skb,
4215 struct netlink_callback *cb)
4216 {
4217 struct cfg80211_registered_device *rdev;
4218 struct net_device *dev;
4219 struct cfg80211_internal_bss *scan;
4220 struct wireless_dev *wdev;
4221 int start = cb->args[1], idx = 0;
4222 int err;
4223
4224 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4225 if (err)
4226 return err;
4227
4228 wdev = dev->ieee80211_ptr;
4229
4230 wdev_lock(wdev);
4231 spin_lock_bh(&rdev->bss_lock);
4232 cfg80211_bss_expire(rdev);
4233
4234 cb->seq = rdev->bss_generation;
4235
4236 list_for_each_entry(scan, &rdev->bss_list, list) {
4237 if (++idx <= start)
4238 continue;
4239 if (nl80211_send_bss(skb, cb,
4240 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4241 rdev, wdev, scan) < 0) {
4242 idx--;
4243 break;
4244 }
4245 }
4246
4247 spin_unlock_bh(&rdev->bss_lock);
4248 wdev_unlock(wdev);
4249
4250 cb->args[1] = idx;
4251 nl80211_finish_netdev_dump(rdev);
4252
4253 return skb->len;
4254 }
4255
4256 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4257 int flags, struct net_device *dev,
4258 struct survey_info *survey)
4259 {
4260 void *hdr;
4261 struct nlattr *infoattr;
4262
4263 hdr = nl80211hdr_put(msg, pid, seq, flags,
4264 NL80211_CMD_NEW_SURVEY_RESULTS);
4265 if (!hdr)
4266 return -ENOMEM;
4267
4268 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4269
4270 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4271 if (!infoattr)
4272 goto nla_put_failure;
4273
4274 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4275 survey->channel->center_freq);
4276 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4277 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4278 survey->noise);
4279 if (survey->filled & SURVEY_INFO_IN_USE)
4280 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4281 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4282 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4283 survey->channel_time);
4284 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4285 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4286 survey->channel_time_busy);
4287 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4288 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4289 survey->channel_time_ext_busy);
4290 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4291 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4292 survey->channel_time_rx);
4293 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4294 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4295 survey->channel_time_tx);
4296
4297 nla_nest_end(msg, infoattr);
4298
4299 return genlmsg_end(msg, hdr);
4300
4301 nla_put_failure:
4302 genlmsg_cancel(msg, hdr);
4303 return -EMSGSIZE;
4304 }
4305
4306 static int nl80211_dump_survey(struct sk_buff *skb,
4307 struct netlink_callback *cb)
4308 {
4309 struct survey_info survey;
4310 struct cfg80211_registered_device *dev;
4311 struct net_device *netdev;
4312 int survey_idx = cb->args[1];
4313 int res;
4314
4315 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4316 if (res)
4317 return res;
4318
4319 if (!dev->ops->dump_survey) {
4320 res = -EOPNOTSUPP;
4321 goto out_err;
4322 }
4323
4324 while (1) {
4325 struct ieee80211_channel *chan;
4326
4327 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4328 &survey);
4329 if (res == -ENOENT)
4330 break;
4331 if (res)
4332 goto out_err;
4333
4334 /* Survey without a channel doesn't make sense */
4335 if (!survey.channel) {
4336 res = -EINVAL;
4337 goto out;
4338 }
4339
4340 chan = ieee80211_get_channel(&dev->wiphy,
4341 survey.channel->center_freq);
4342 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4343 survey_idx++;
4344 continue;
4345 }
4346
4347 if (nl80211_send_survey(skb,
4348 NETLINK_CB(cb->skb).pid,
4349 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4350 netdev,
4351 &survey) < 0)
4352 goto out;
4353 survey_idx++;
4354 }
4355
4356 out:
4357 cb->args[1] = survey_idx;
4358 res = skb->len;
4359 out_err:
4360 nl80211_finish_netdev_dump(dev);
4361 return res;
4362 }
4363
4364 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4365 {
4366 return auth_type <= NL80211_AUTHTYPE_MAX;
4367 }
4368
4369 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4370 {
4371 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4372 NL80211_WPA_VERSION_2));
4373 }
4374
4375 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4376 {
4377 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4378 struct net_device *dev = info->user_ptr[1];
4379 struct ieee80211_channel *chan;
4380 const u8 *bssid, *ssid, *ie = NULL;
4381 int err, ssid_len, ie_len = 0;
4382 enum nl80211_auth_type auth_type;
4383 struct key_parse key;
4384 bool local_state_change;
4385
4386 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4387 return -EINVAL;
4388
4389 if (!info->attrs[NL80211_ATTR_MAC])
4390 return -EINVAL;
4391
4392 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4393 return -EINVAL;
4394
4395 if (!info->attrs[NL80211_ATTR_SSID])
4396 return -EINVAL;
4397
4398 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4399 return -EINVAL;
4400
4401 err = nl80211_parse_key(info, &key);
4402 if (err)
4403 return err;
4404
4405 if (key.idx >= 0) {
4406 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4407 return -EINVAL;
4408 if (!key.p.key || !key.p.key_len)
4409 return -EINVAL;
4410 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4411 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4412 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4413 key.p.key_len != WLAN_KEY_LEN_WEP104))
4414 return -EINVAL;
4415 if (key.idx > 4)
4416 return -EINVAL;
4417 } else {
4418 key.p.key_len = 0;
4419 key.p.key = NULL;
4420 }
4421
4422 if (key.idx >= 0) {
4423 int i;
4424 bool ok = false;
4425 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4426 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4427 ok = true;
4428 break;
4429 }
4430 }
4431 if (!ok)
4432 return -EINVAL;
4433 }
4434
4435 if (!rdev->ops->auth)
4436 return -EOPNOTSUPP;
4437
4438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4439 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4440 return -EOPNOTSUPP;
4441
4442 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4443 chan = ieee80211_get_channel(&rdev->wiphy,
4444 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4445 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4446 return -EINVAL;
4447
4448 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4449 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4450
4451 if (info->attrs[NL80211_ATTR_IE]) {
4452 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4453 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4454 }
4455
4456 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4457 if (!nl80211_valid_auth_type(auth_type))
4458 return -EINVAL;
4459
4460 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4461
4462 /*
4463 * Since we no longer track auth state, ignore
4464 * requests to only change local state.
4465 */
4466 if (local_state_change)
4467 return 0;
4468
4469 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4470 ssid, ssid_len, ie, ie_len,
4471 key.p.key, key.p.key_len, key.idx);
4472 }
4473
4474 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4475 struct genl_info *info,
4476 struct cfg80211_crypto_settings *settings,
4477 int cipher_limit)
4478 {
4479 memset(settings, 0, sizeof(*settings));
4480
4481 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4482
4483 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4484 u16 proto;
4485 proto = nla_get_u16(
4486 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4487 settings->control_port_ethertype = cpu_to_be16(proto);
4488 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4489 proto != ETH_P_PAE)
4490 return -EINVAL;
4491 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4492 settings->control_port_no_encrypt = true;
4493 } else
4494 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4495
4496 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4497 void *data;
4498 int len, i;
4499
4500 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4501 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4502 settings->n_ciphers_pairwise = len / sizeof(u32);
4503
4504 if (len % sizeof(u32))
4505 return -EINVAL;
4506
4507 if (settings->n_ciphers_pairwise > cipher_limit)
4508 return -EINVAL;
4509
4510 memcpy(settings->ciphers_pairwise, data, len);
4511
4512 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4513 if (!cfg80211_supported_cipher_suite(
4514 &rdev->wiphy,
4515 settings->ciphers_pairwise[i]))
4516 return -EINVAL;
4517 }
4518
4519 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4520 settings->cipher_group =
4521 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4522 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4523 settings->cipher_group))
4524 return -EINVAL;
4525 }
4526
4527 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4528 settings->wpa_versions =
4529 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4530 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4531 return -EINVAL;
4532 }
4533
4534 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4535 void *data;
4536 int len;
4537
4538 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4539 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4540 settings->n_akm_suites = len / sizeof(u32);
4541
4542 if (len % sizeof(u32))
4543 return -EINVAL;
4544
4545 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4546 return -EINVAL;
4547
4548 memcpy(settings->akm_suites, data, len);
4549 }
4550
4551 return 0;
4552 }
4553
4554 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4555 {
4556 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4557 struct net_device *dev = info->user_ptr[1];
4558 struct cfg80211_crypto_settings crypto;
4559 struct ieee80211_channel *chan;
4560 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4561 int err, ssid_len, ie_len = 0;
4562 bool use_mfp = false;
4563 u32 flags = 0;
4564 struct ieee80211_ht_cap *ht_capa = NULL;
4565 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4566
4567 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4568 return -EINVAL;
4569
4570 if (!info->attrs[NL80211_ATTR_MAC] ||
4571 !info->attrs[NL80211_ATTR_SSID] ||
4572 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4573 return -EINVAL;
4574
4575 if (!rdev->ops->assoc)
4576 return -EOPNOTSUPP;
4577
4578 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4579 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4580 return -EOPNOTSUPP;
4581
4582 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4583
4584 chan = ieee80211_get_channel(&rdev->wiphy,
4585 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4586 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4587 return -EINVAL;
4588
4589 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4590 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4591
4592 if (info->attrs[NL80211_ATTR_IE]) {
4593 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4594 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4595 }
4596
4597 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4598 enum nl80211_mfp mfp =
4599 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4600 if (mfp == NL80211_MFP_REQUIRED)
4601 use_mfp = true;
4602 else if (mfp != NL80211_MFP_NO)
4603 return -EINVAL;
4604 }
4605
4606 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4607 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4608
4609 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4610 flags |= ASSOC_REQ_DISABLE_HT;
4611
4612 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4613 ht_capa_mask =
4614 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4615
4616 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4617 if (!ht_capa_mask)
4618 return -EINVAL;
4619 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4620 }
4621
4622 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4623 if (!err)
4624 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4625 ssid, ssid_len, ie, ie_len, use_mfp,
4626 &crypto, flags, ht_capa,
4627 ht_capa_mask);
4628
4629 return err;
4630 }
4631
4632 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4633 {
4634 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4635 struct net_device *dev = info->user_ptr[1];
4636 const u8 *ie = NULL, *bssid;
4637 int ie_len = 0;
4638 u16 reason_code;
4639 bool local_state_change;
4640
4641 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4642 return -EINVAL;
4643
4644 if (!info->attrs[NL80211_ATTR_MAC])
4645 return -EINVAL;
4646
4647 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4648 return -EINVAL;
4649
4650 if (!rdev->ops->deauth)
4651 return -EOPNOTSUPP;
4652
4653 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4654 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4655 return -EOPNOTSUPP;
4656
4657 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4658
4659 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4660 if (reason_code == 0) {
4661 /* Reason Code 0 is reserved */
4662 return -EINVAL;
4663 }
4664
4665 if (info->attrs[NL80211_ATTR_IE]) {
4666 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4667 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4668 }
4669
4670 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4671
4672 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4673 local_state_change);
4674 }
4675
4676 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4677 {
4678 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4679 struct net_device *dev = info->user_ptr[1];
4680 const u8 *ie = NULL, *bssid;
4681 int ie_len = 0;
4682 u16 reason_code;
4683 bool local_state_change;
4684
4685 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4686 return -EINVAL;
4687
4688 if (!info->attrs[NL80211_ATTR_MAC])
4689 return -EINVAL;
4690
4691 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4692 return -EINVAL;
4693
4694 if (!rdev->ops->disassoc)
4695 return -EOPNOTSUPP;
4696
4697 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4699 return -EOPNOTSUPP;
4700
4701 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4702
4703 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4704 if (reason_code == 0) {
4705 /* Reason Code 0 is reserved */
4706 return -EINVAL;
4707 }
4708
4709 if (info->attrs[NL80211_ATTR_IE]) {
4710 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4711 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4712 }
4713
4714 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4715
4716 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4717 local_state_change);
4718 }
4719
4720 static bool
4721 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4722 int mcast_rate[IEEE80211_NUM_BANDS],
4723 int rateval)
4724 {
4725 struct wiphy *wiphy = &rdev->wiphy;
4726 bool found = false;
4727 int band, i;
4728
4729 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4730 struct ieee80211_supported_band *sband;
4731
4732 sband = wiphy->bands[band];
4733 if (!sband)
4734 continue;
4735
4736 for (i = 0; i < sband->n_bitrates; i++) {
4737 if (sband->bitrates[i].bitrate == rateval) {
4738 mcast_rate[band] = i + 1;
4739 found = true;
4740 break;
4741 }
4742 }
4743 }
4744
4745 return found;
4746 }
4747
4748 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4749 {
4750 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4751 struct net_device *dev = info->user_ptr[1];
4752 struct cfg80211_ibss_params ibss;
4753 struct wiphy *wiphy;
4754 struct cfg80211_cached_keys *connkeys = NULL;
4755 int err;
4756
4757 memset(&ibss, 0, sizeof(ibss));
4758
4759 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4760 return -EINVAL;
4761
4762 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4763 !info->attrs[NL80211_ATTR_SSID] ||
4764 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4765 return -EINVAL;
4766
4767 ibss.beacon_interval = 100;
4768
4769 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4770 ibss.beacon_interval =
4771 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4772 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4773 return -EINVAL;
4774 }
4775
4776 if (!rdev->ops->join_ibss)
4777 return -EOPNOTSUPP;
4778
4779 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4780 return -EOPNOTSUPP;
4781
4782 wiphy = &rdev->wiphy;
4783
4784 if (info->attrs[NL80211_ATTR_MAC]) {
4785 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4786
4787 if (!is_valid_ether_addr(ibss.bssid))
4788 return -EINVAL;
4789 }
4790 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4791 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4792
4793 if (info->attrs[NL80211_ATTR_IE]) {
4794 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4795 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4796 }
4797
4798 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4799 enum nl80211_channel_type channel_type;
4800
4801 channel_type = nla_get_u32(
4802 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4803 if (channel_type != NL80211_CHAN_NO_HT &&
4804 channel_type != NL80211_CHAN_HT20 &&
4805 channel_type != NL80211_CHAN_HT40MINUS &&
4806 channel_type != NL80211_CHAN_HT40PLUS)
4807 return -EINVAL;
4808
4809 if (channel_type != NL80211_CHAN_NO_HT &&
4810 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
4811 return -EINVAL;
4812
4813 ibss.channel_type = channel_type;
4814 } else {
4815 ibss.channel_type = NL80211_CHAN_NO_HT;
4816 }
4817
4818 ibss.channel = rdev_freq_to_chan(rdev,
4819 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
4820 ibss.channel_type);
4821 if (!ibss.channel ||
4822 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4823 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4824 return -EINVAL;
4825
4826 /* Both channels should be able to initiate communication */
4827 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
4828 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
4829 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
4830 ibss.channel_type))
4831 return -EINVAL;
4832
4833 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4834 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4835
4836 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4837 u8 *rates =
4838 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4839 int n_rates =
4840 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4841 struct ieee80211_supported_band *sband =
4842 wiphy->bands[ibss.channel->band];
4843
4844 err = ieee80211_get_ratemask(sband, rates, n_rates,
4845 &ibss.basic_rates);
4846 if (err)
4847 return err;
4848 }
4849
4850 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4851 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4852 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4853 return -EINVAL;
4854
4855 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4856 connkeys = nl80211_parse_connkeys(rdev,
4857 info->attrs[NL80211_ATTR_KEYS]);
4858 if (IS_ERR(connkeys))
4859 return PTR_ERR(connkeys);
4860 }
4861
4862 ibss.control_port =
4863 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
4864
4865 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4866 if (err)
4867 kfree(connkeys);
4868 return err;
4869 }
4870
4871 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4872 {
4873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4874 struct net_device *dev = info->user_ptr[1];
4875
4876 if (!rdev->ops->leave_ibss)
4877 return -EOPNOTSUPP;
4878
4879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4880 return -EOPNOTSUPP;
4881
4882 return cfg80211_leave_ibss(rdev, dev, false);
4883 }
4884
4885 #ifdef CONFIG_NL80211_TESTMODE
4886 static struct genl_multicast_group nl80211_testmode_mcgrp = {
4887 .name = "testmode",
4888 };
4889
4890 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4891 {
4892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893 int err;
4894
4895 if (!info->attrs[NL80211_ATTR_TESTDATA])
4896 return -EINVAL;
4897
4898 err = -EOPNOTSUPP;
4899 if (rdev->ops->testmode_cmd) {
4900 rdev->testmode_info = info;
4901 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4902 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4903 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4904 rdev->testmode_info = NULL;
4905 }
4906
4907 return err;
4908 }
4909
4910 static int nl80211_testmode_dump(struct sk_buff *skb,
4911 struct netlink_callback *cb)
4912 {
4913 struct cfg80211_registered_device *rdev;
4914 int err;
4915 long phy_idx;
4916 void *data = NULL;
4917 int data_len = 0;
4918
4919 if (cb->args[0]) {
4920 /*
4921 * 0 is a valid index, but not valid for args[0],
4922 * so we need to offset by 1.
4923 */
4924 phy_idx = cb->args[0] - 1;
4925 } else {
4926 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4927 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4928 nl80211_policy);
4929 if (err)
4930 return err;
4931 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
4932 phy_idx = nla_get_u32(
4933 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4934 } else {
4935 struct net_device *netdev;
4936
4937 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
4938 nl80211_fam.attrbuf,
4939 &rdev, &netdev);
4940 if (err)
4941 return err;
4942 dev_put(netdev);
4943 phy_idx = rdev->wiphy_idx;
4944 cfg80211_unlock_rdev(rdev);
4945 }
4946 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4947 cb->args[1] =
4948 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4949 }
4950
4951 if (cb->args[1]) {
4952 data = nla_data((void *)cb->args[1]);
4953 data_len = nla_len((void *)cb->args[1]);
4954 }
4955
4956 mutex_lock(&cfg80211_mutex);
4957 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4958 if (!rdev) {
4959 mutex_unlock(&cfg80211_mutex);
4960 return -ENOENT;
4961 }
4962 cfg80211_lock_rdev(rdev);
4963 mutex_unlock(&cfg80211_mutex);
4964
4965 if (!rdev->ops->testmode_dump) {
4966 err = -EOPNOTSUPP;
4967 goto out_err;
4968 }
4969
4970 while (1) {
4971 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4972 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4973 NL80211_CMD_TESTMODE);
4974 struct nlattr *tmdata;
4975
4976 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx) < 0) {
4977 genlmsg_cancel(skb, hdr);
4978 break;
4979 }
4980
4981 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
4982 if (!tmdata) {
4983 genlmsg_cancel(skb, hdr);
4984 break;
4985 }
4986 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
4987 data, data_len);
4988 nla_nest_end(skb, tmdata);
4989
4990 if (err == -ENOBUFS || err == -ENOENT) {
4991 genlmsg_cancel(skb, hdr);
4992 break;
4993 } else if (err) {
4994 genlmsg_cancel(skb, hdr);
4995 goto out_err;
4996 }
4997
4998 genlmsg_end(skb, hdr);
4999 }
5000
5001 err = skb->len;
5002 /* see above */
5003 cb->args[0] = phy_idx + 1;
5004 out_err:
5005 cfg80211_unlock_rdev(rdev);
5006 return err;
5007 }
5008
5009 static struct sk_buff *
5010 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5011 int approxlen, u32 pid, u32 seq, gfp_t gfp)
5012 {
5013 struct sk_buff *skb;
5014 void *hdr;
5015 struct nlattr *data;
5016
5017 skb = nlmsg_new(approxlen + 100, gfp);
5018 if (!skb)
5019 return NULL;
5020
5021 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5022 if (!hdr) {
5023 kfree_skb(skb);
5024 return NULL;
5025 }
5026
5027 NLA_PUT_U32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
5028 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5029
5030 ((void **)skb->cb)[0] = rdev;
5031 ((void **)skb->cb)[1] = hdr;
5032 ((void **)skb->cb)[2] = data;
5033
5034 return skb;
5035
5036 nla_put_failure:
5037 kfree_skb(skb);
5038 return NULL;
5039 }
5040
5041 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5042 int approxlen)
5043 {
5044 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5045
5046 if (WARN_ON(!rdev->testmode_info))
5047 return NULL;
5048
5049 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5050 rdev->testmode_info->snd_pid,
5051 rdev->testmode_info->snd_seq,
5052 GFP_KERNEL);
5053 }
5054 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5055
5056 int cfg80211_testmode_reply(struct sk_buff *skb)
5057 {
5058 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5059 void *hdr = ((void **)skb->cb)[1];
5060 struct nlattr *data = ((void **)skb->cb)[2];
5061
5062 if (WARN_ON(!rdev->testmode_info)) {
5063 kfree_skb(skb);
5064 return -EINVAL;
5065 }
5066
5067 nla_nest_end(skb, data);
5068 genlmsg_end(skb, hdr);
5069 return genlmsg_reply(skb, rdev->testmode_info);
5070 }
5071 EXPORT_SYMBOL(cfg80211_testmode_reply);
5072
5073 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5074 int approxlen, gfp_t gfp)
5075 {
5076 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5077
5078 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5079 }
5080 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5081
5082 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5083 {
5084 void *hdr = ((void **)skb->cb)[1];
5085 struct nlattr *data = ((void **)skb->cb)[2];
5086
5087 nla_nest_end(skb, data);
5088 genlmsg_end(skb, hdr);
5089 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5090 }
5091 EXPORT_SYMBOL(cfg80211_testmode_event);
5092 #endif
5093
5094 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5095 {
5096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5097 struct net_device *dev = info->user_ptr[1];
5098 struct cfg80211_connect_params connect;
5099 struct wiphy *wiphy;
5100 struct cfg80211_cached_keys *connkeys = NULL;
5101 int err;
5102
5103 memset(&connect, 0, sizeof(connect));
5104
5105 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5106 return -EINVAL;
5107
5108 if (!info->attrs[NL80211_ATTR_SSID] ||
5109 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5110 return -EINVAL;
5111
5112 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5113 connect.auth_type =
5114 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5115 if (!nl80211_valid_auth_type(connect.auth_type))
5116 return -EINVAL;
5117 } else
5118 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5119
5120 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5121
5122 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5123 NL80211_MAX_NR_CIPHER_SUITES);
5124 if (err)
5125 return err;
5126
5127 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5128 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5129 return -EOPNOTSUPP;
5130
5131 wiphy = &rdev->wiphy;
5132
5133 connect.bg_scan_period = -1;
5134 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5135 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5136 connect.bg_scan_period =
5137 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5138 }
5139
5140 if (info->attrs[NL80211_ATTR_MAC])
5141 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5142 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5143 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5144
5145 if (info->attrs[NL80211_ATTR_IE]) {
5146 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5147 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5148 }
5149
5150 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5151 connect.channel =
5152 ieee80211_get_channel(wiphy,
5153 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5154 if (!connect.channel ||
5155 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5156 return -EINVAL;
5157 }
5158
5159 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5160 connkeys = nl80211_parse_connkeys(rdev,
5161 info->attrs[NL80211_ATTR_KEYS]);
5162 if (IS_ERR(connkeys))
5163 return PTR_ERR(connkeys);
5164 }
5165
5166 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5167 connect.flags |= ASSOC_REQ_DISABLE_HT;
5168
5169 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5170 memcpy(&connect.ht_capa_mask,
5171 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5172 sizeof(connect.ht_capa_mask));
5173
5174 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5175 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5176 return -EINVAL;
5177 memcpy(&connect.ht_capa,
5178 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5179 sizeof(connect.ht_capa));
5180 }
5181
5182 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5183 if (err)
5184 kfree(connkeys);
5185 return err;
5186 }
5187
5188 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5189 {
5190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5191 struct net_device *dev = info->user_ptr[1];
5192 u16 reason;
5193
5194 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5195 reason = WLAN_REASON_DEAUTH_LEAVING;
5196 else
5197 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5198
5199 if (reason == 0)
5200 return -EINVAL;
5201
5202 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5203 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5204 return -EOPNOTSUPP;
5205
5206 return cfg80211_disconnect(rdev, dev, reason, true);
5207 }
5208
5209 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5210 {
5211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5212 struct net *net;
5213 int err;
5214 u32 pid;
5215
5216 if (!info->attrs[NL80211_ATTR_PID])
5217 return -EINVAL;
5218
5219 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5220
5221 net = get_net_ns_by_pid(pid);
5222 if (IS_ERR(net))
5223 return PTR_ERR(net);
5224
5225 err = 0;
5226
5227 /* check if anything to do */
5228 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5229 err = cfg80211_switch_netns(rdev, net);
5230
5231 put_net(net);
5232 return err;
5233 }
5234
5235 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5236 {
5237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5238 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5239 struct cfg80211_pmksa *pmksa) = NULL;
5240 struct net_device *dev = info->user_ptr[1];
5241 struct cfg80211_pmksa pmksa;
5242
5243 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5244
5245 if (!info->attrs[NL80211_ATTR_MAC])
5246 return -EINVAL;
5247
5248 if (!info->attrs[NL80211_ATTR_PMKID])
5249 return -EINVAL;
5250
5251 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5252 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5253
5254 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5255 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5256 return -EOPNOTSUPP;
5257
5258 switch (info->genlhdr->cmd) {
5259 case NL80211_CMD_SET_PMKSA:
5260 rdev_ops = rdev->ops->set_pmksa;
5261 break;
5262 case NL80211_CMD_DEL_PMKSA:
5263 rdev_ops = rdev->ops->del_pmksa;
5264 break;
5265 default:
5266 WARN_ON(1);
5267 break;
5268 }
5269
5270 if (!rdev_ops)
5271 return -EOPNOTSUPP;
5272
5273 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5274 }
5275
5276 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5277 {
5278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5279 struct net_device *dev = info->user_ptr[1];
5280
5281 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5282 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5283 return -EOPNOTSUPP;
5284
5285 if (!rdev->ops->flush_pmksa)
5286 return -EOPNOTSUPP;
5287
5288 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5289 }
5290
5291 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5292 {
5293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5294 struct net_device *dev = info->user_ptr[1];
5295 u8 action_code, dialog_token;
5296 u16 status_code;
5297 u8 *peer;
5298
5299 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5300 !rdev->ops->tdls_mgmt)
5301 return -EOPNOTSUPP;
5302
5303 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5304 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5305 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5306 !info->attrs[NL80211_ATTR_IE] ||
5307 !info->attrs[NL80211_ATTR_MAC])
5308 return -EINVAL;
5309
5310 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5311 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5312 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5313 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5314
5315 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5316 dialog_token, status_code,
5317 nla_data(info->attrs[NL80211_ATTR_IE]),
5318 nla_len(info->attrs[NL80211_ATTR_IE]));
5319 }
5320
5321 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5322 {
5323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5324 struct net_device *dev = info->user_ptr[1];
5325 enum nl80211_tdls_operation operation;
5326 u8 *peer;
5327
5328 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5329 !rdev->ops->tdls_oper)
5330 return -EOPNOTSUPP;
5331
5332 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5333 !info->attrs[NL80211_ATTR_MAC])
5334 return -EINVAL;
5335
5336 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5337 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5338
5339 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5340 }
5341
5342 static int nl80211_remain_on_channel(struct sk_buff *skb,
5343 struct genl_info *info)
5344 {
5345 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5346 struct net_device *dev = info->user_ptr[1];
5347 struct ieee80211_channel *chan;
5348 struct sk_buff *msg;
5349 void *hdr;
5350 u64 cookie;
5351 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5352 u32 freq, duration;
5353 int err;
5354
5355 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5356 !info->attrs[NL80211_ATTR_DURATION])
5357 return -EINVAL;
5358
5359 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5360
5361 /*
5362 * We should be on that channel for at least one jiffie,
5363 * and more than 5 seconds seems excessive.
5364 */
5365 if (!duration || !msecs_to_jiffies(duration) ||
5366 duration > rdev->wiphy.max_remain_on_channel_duration)
5367 return -EINVAL;
5368
5369 if (!rdev->ops->remain_on_channel ||
5370 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5371 return -EOPNOTSUPP;
5372
5373 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5374 channel_type = nla_get_u32(
5375 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5376 if (channel_type != NL80211_CHAN_NO_HT &&
5377 channel_type != NL80211_CHAN_HT20 &&
5378 channel_type != NL80211_CHAN_HT40PLUS &&
5379 channel_type != NL80211_CHAN_HT40MINUS)
5380 return -EINVAL;
5381 }
5382
5383 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5384 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5385 if (chan == NULL)
5386 return -EINVAL;
5387
5388 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5389 if (!msg)
5390 return -ENOMEM;
5391
5392 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5393 NL80211_CMD_REMAIN_ON_CHANNEL);
5394
5395 if (IS_ERR(hdr)) {
5396 err = PTR_ERR(hdr);
5397 goto free_msg;
5398 }
5399
5400 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5401 channel_type, duration, &cookie);
5402
5403 if (err)
5404 goto free_msg;
5405
5406 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5407
5408 genlmsg_end(msg, hdr);
5409
5410 return genlmsg_reply(msg, info);
5411
5412 nla_put_failure:
5413 err = -ENOBUFS;
5414 free_msg:
5415 nlmsg_free(msg);
5416 return err;
5417 }
5418
5419 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5420 struct genl_info *info)
5421 {
5422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5423 struct net_device *dev = info->user_ptr[1];
5424 u64 cookie;
5425
5426 if (!info->attrs[NL80211_ATTR_COOKIE])
5427 return -EINVAL;
5428
5429 if (!rdev->ops->cancel_remain_on_channel)
5430 return -EOPNOTSUPP;
5431
5432 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5433
5434 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5435 }
5436
5437 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5438 u8 *rates, u8 rates_len)
5439 {
5440 u8 i;
5441 u32 mask = 0;
5442
5443 for (i = 0; i < rates_len; i++) {
5444 int rate = (rates[i] & 0x7f) * 5;
5445 int ridx;
5446 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5447 struct ieee80211_rate *srate =
5448 &sband->bitrates[ridx];
5449 if (rate == srate->bitrate) {
5450 mask |= 1 << ridx;
5451 break;
5452 }
5453 }
5454 if (ridx == sband->n_bitrates)
5455 return 0; /* rate not found */
5456 }
5457
5458 return mask;
5459 }
5460
5461 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5462 u8 *rates, u8 rates_len,
5463 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5464 {
5465 u8 i;
5466
5467 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5468
5469 for (i = 0; i < rates_len; i++) {
5470 int ridx, rbit;
5471
5472 ridx = rates[i] / 8;
5473 rbit = BIT(rates[i] % 8);
5474
5475 /* check validity */
5476 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5477 return false;
5478
5479 /* check availability */
5480 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5481 mcs[ridx] |= rbit;
5482 else
5483 return false;
5484 }
5485
5486 return true;
5487 }
5488
5489 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5490 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5491 .len = NL80211_MAX_SUPP_RATES },
5492 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5493 .len = NL80211_MAX_SUPP_HT_RATES },
5494 };
5495
5496 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5497 struct genl_info *info)
5498 {
5499 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5500 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5501 struct cfg80211_bitrate_mask mask;
5502 int rem, i;
5503 struct net_device *dev = info->user_ptr[1];
5504 struct nlattr *tx_rates;
5505 struct ieee80211_supported_band *sband;
5506
5507 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5508 return -EINVAL;
5509
5510 if (!rdev->ops->set_bitrate_mask)
5511 return -EOPNOTSUPP;
5512
5513 memset(&mask, 0, sizeof(mask));
5514 /* Default to all rates enabled */
5515 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5516 sband = rdev->wiphy.bands[i];
5517 mask.control[i].legacy =
5518 sband ? (1 << sband->n_bitrates) - 1 : 0;
5519 if (sband)
5520 memcpy(mask.control[i].mcs,
5521 sband->ht_cap.mcs.rx_mask,
5522 sizeof(mask.control[i].mcs));
5523 else
5524 memset(mask.control[i].mcs, 0,
5525 sizeof(mask.control[i].mcs));
5526 }
5527
5528 /*
5529 * The nested attribute uses enum nl80211_band as the index. This maps
5530 * directly to the enum ieee80211_band values used in cfg80211.
5531 */
5532 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5533 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5534 {
5535 enum ieee80211_band band = nla_type(tx_rates);
5536 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5537 return -EINVAL;
5538 sband = rdev->wiphy.bands[band];
5539 if (sband == NULL)
5540 return -EINVAL;
5541 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5542 nla_len(tx_rates), nl80211_txattr_policy);
5543 if (tb[NL80211_TXRATE_LEGACY]) {
5544 mask.control[band].legacy = rateset_to_mask(
5545 sband,
5546 nla_data(tb[NL80211_TXRATE_LEGACY]),
5547 nla_len(tb[NL80211_TXRATE_LEGACY]));
5548 }
5549 if (tb[NL80211_TXRATE_MCS]) {
5550 if (!ht_rateset_to_mask(
5551 sband,
5552 nla_data(tb[NL80211_TXRATE_MCS]),
5553 nla_len(tb[NL80211_TXRATE_MCS]),
5554 mask.control[band].mcs))
5555 return -EINVAL;
5556 }
5557
5558 if (mask.control[band].legacy == 0) {
5559 /* don't allow empty legacy rates if HT
5560 * is not even supported. */
5561 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5562 return -EINVAL;
5563
5564 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5565 if (mask.control[band].mcs[i])
5566 break;
5567
5568 /* legacy and mcs rates may not be both empty */
5569 if (i == IEEE80211_HT_MCS_MASK_LEN)
5570 return -EINVAL;
5571 }
5572 }
5573
5574 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5575 }
5576
5577 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5578 {
5579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5580 struct net_device *dev = info->user_ptr[1];
5581 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5582
5583 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5584 return -EINVAL;
5585
5586 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5587 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5588
5589 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5590 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5591 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5592 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5593 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5594 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5595 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5596 return -EOPNOTSUPP;
5597
5598 /* not much point in registering if we can't reply */
5599 if (!rdev->ops->mgmt_tx)
5600 return -EOPNOTSUPP;
5601
5602 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5603 frame_type,
5604 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5605 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5606 }
5607
5608 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5609 {
5610 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5611 struct net_device *dev = info->user_ptr[1];
5612 struct ieee80211_channel *chan;
5613 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5614 bool channel_type_valid = false;
5615 u32 freq;
5616 int err;
5617 void *hdr = NULL;
5618 u64 cookie;
5619 struct sk_buff *msg = NULL;
5620 unsigned int wait = 0;
5621 bool offchan, no_cck, dont_wait_for_ack;
5622
5623 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5624
5625 if (!info->attrs[NL80211_ATTR_FRAME] ||
5626 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5627 return -EINVAL;
5628
5629 if (!rdev->ops->mgmt_tx)
5630 return -EOPNOTSUPP;
5631
5632 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5633 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5634 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5635 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5636 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5637 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5638 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5639 return -EOPNOTSUPP;
5640
5641 if (info->attrs[NL80211_ATTR_DURATION]) {
5642 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5643 return -EINVAL;
5644 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5645 }
5646
5647 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5648 channel_type = nla_get_u32(
5649 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
5650 if (channel_type != NL80211_CHAN_NO_HT &&
5651 channel_type != NL80211_CHAN_HT20 &&
5652 channel_type != NL80211_CHAN_HT40PLUS &&
5653 channel_type != NL80211_CHAN_HT40MINUS)
5654 return -EINVAL;
5655 channel_type_valid = true;
5656 }
5657
5658 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5659
5660 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5661 return -EINVAL;
5662
5663 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5664
5665 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5666 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5667 if (chan == NULL)
5668 return -EINVAL;
5669
5670 if (!dont_wait_for_ack) {
5671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5672 if (!msg)
5673 return -ENOMEM;
5674
5675 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5676 NL80211_CMD_FRAME);
5677
5678 if (IS_ERR(hdr)) {
5679 err = PTR_ERR(hdr);
5680 goto free_msg;
5681 }
5682 }
5683
5684 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5685 channel_type_valid, wait,
5686 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5687 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5688 no_cck, dont_wait_for_ack, &cookie);
5689 if (err)
5690 goto free_msg;
5691
5692 if (msg) {
5693 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
5694
5695 genlmsg_end(msg, hdr);
5696 return genlmsg_reply(msg, info);
5697 }
5698
5699 return 0;
5700
5701 nla_put_failure:
5702 err = -ENOBUFS;
5703 free_msg:
5704 nlmsg_free(msg);
5705 return err;
5706 }
5707
5708 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
5709 {
5710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5711 struct net_device *dev = info->user_ptr[1];
5712 u64 cookie;
5713
5714 if (!info->attrs[NL80211_ATTR_COOKIE])
5715 return -EINVAL;
5716
5717 if (!rdev->ops->mgmt_tx_cancel_wait)
5718 return -EOPNOTSUPP;
5719
5720 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5721 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5722 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5723 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5724 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5725 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5726 return -EOPNOTSUPP;
5727
5728 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5729
5730 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
5731 }
5732
5733 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
5734 {
5735 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5736 struct wireless_dev *wdev;
5737 struct net_device *dev = info->user_ptr[1];
5738 u8 ps_state;
5739 bool state;
5740 int err;
5741
5742 if (!info->attrs[NL80211_ATTR_PS_STATE])
5743 return -EINVAL;
5744
5745 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
5746
5747 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
5748 return -EINVAL;
5749
5750 wdev = dev->ieee80211_ptr;
5751
5752 if (!rdev->ops->set_power_mgmt)
5753 return -EOPNOTSUPP;
5754
5755 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
5756
5757 if (state == wdev->ps)
5758 return 0;
5759
5760 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
5761 wdev->ps_timeout);
5762 if (!err)
5763 wdev->ps = state;
5764 return err;
5765 }
5766
5767 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
5768 {
5769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5770 enum nl80211_ps_state ps_state;
5771 struct wireless_dev *wdev;
5772 struct net_device *dev = info->user_ptr[1];
5773 struct sk_buff *msg;
5774 void *hdr;
5775 int err;
5776
5777 wdev = dev->ieee80211_ptr;
5778
5779 if (!rdev->ops->set_power_mgmt)
5780 return -EOPNOTSUPP;
5781
5782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5783 if (!msg)
5784 return -ENOMEM;
5785
5786 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5787 NL80211_CMD_GET_POWER_SAVE);
5788 if (!hdr) {
5789 err = -ENOBUFS;
5790 goto free_msg;
5791 }
5792
5793 if (wdev->ps)
5794 ps_state = NL80211_PS_ENABLED;
5795 else
5796 ps_state = NL80211_PS_DISABLED;
5797
5798 NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
5799
5800 genlmsg_end(msg, hdr);
5801 return genlmsg_reply(msg, info);
5802
5803 nla_put_failure:
5804 err = -ENOBUFS;
5805 free_msg:
5806 nlmsg_free(msg);
5807 return err;
5808 }
5809
5810 static struct nla_policy
5811 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
5812 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
5813 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
5814 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
5815 };
5816
5817 static int nl80211_set_cqm_rssi(struct genl_info *info,
5818 s32 threshold, u32 hysteresis)
5819 {
5820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5821 struct wireless_dev *wdev;
5822 struct net_device *dev = info->user_ptr[1];
5823
5824 if (threshold > 0)
5825 return -EINVAL;
5826
5827 wdev = dev->ieee80211_ptr;
5828
5829 if (!rdev->ops->set_cqm_rssi_config)
5830 return -EOPNOTSUPP;
5831
5832 if (wdev->iftype != NL80211_IFTYPE_STATION &&
5833 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
5834 return -EOPNOTSUPP;
5835
5836 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
5837 threshold, hysteresis);
5838 }
5839
5840 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
5841 {
5842 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
5843 struct nlattr *cqm;
5844 int err;
5845
5846 cqm = info->attrs[NL80211_ATTR_CQM];
5847 if (!cqm) {
5848 err = -EINVAL;
5849 goto out;
5850 }
5851
5852 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
5853 nl80211_attr_cqm_policy);
5854 if (err)
5855 goto out;
5856
5857 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
5858 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
5859 s32 threshold;
5860 u32 hysteresis;
5861 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
5862 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
5863 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
5864 } else
5865 err = -EINVAL;
5866
5867 out:
5868 return err;
5869 }
5870
5871 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
5872 {
5873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5874 struct net_device *dev = info->user_ptr[1];
5875 struct mesh_config cfg;
5876 struct mesh_setup setup;
5877 int err;
5878
5879 /* start with default */
5880 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
5881 memcpy(&setup, &default_mesh_setup, sizeof(setup));
5882
5883 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
5884 /* and parse parameters if given */
5885 err = nl80211_parse_mesh_config(info, &cfg, NULL);
5886 if (err)
5887 return err;
5888 }
5889
5890 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
5891 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
5892 return -EINVAL;
5893
5894 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
5895 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
5896
5897 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5898 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
5899 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5900 return -EINVAL;
5901
5902 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
5903 /* parse additional setup parameters if given */
5904 err = nl80211_parse_mesh_setup(info, &setup);
5905 if (err)
5906 return err;
5907 }
5908
5909 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
5910 }
5911
5912 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
5913 {
5914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5915 struct net_device *dev = info->user_ptr[1];
5916
5917 return cfg80211_leave_mesh(rdev, dev);
5918 }
5919
5920 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
5921 {
5922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5923 struct sk_buff *msg;
5924 void *hdr;
5925
5926 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
5927 return -EOPNOTSUPP;
5928
5929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5930 if (!msg)
5931 return -ENOMEM;
5932
5933 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5934 NL80211_CMD_GET_WOWLAN);
5935 if (!hdr)
5936 goto nla_put_failure;
5937
5938 if (rdev->wowlan) {
5939 struct nlattr *nl_wowlan;
5940
5941 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
5942 if (!nl_wowlan)
5943 goto nla_put_failure;
5944
5945 if (rdev->wowlan->any)
5946 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
5947 if (rdev->wowlan->disconnect)
5948 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
5949 if (rdev->wowlan->magic_pkt)
5950 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
5951 if (rdev->wowlan->gtk_rekey_failure)
5952 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
5953 if (rdev->wowlan->eap_identity_req)
5954 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
5955 if (rdev->wowlan->four_way_handshake)
5956 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
5957 if (rdev->wowlan->rfkill_release)
5958 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
5959 if (rdev->wowlan->n_patterns) {
5960 struct nlattr *nl_pats, *nl_pat;
5961 int i, pat_len;
5962
5963 nl_pats = nla_nest_start(msg,
5964 NL80211_WOWLAN_TRIG_PKT_PATTERN);
5965 if (!nl_pats)
5966 goto nla_put_failure;
5967
5968 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
5969 nl_pat = nla_nest_start(msg, i + 1);
5970 if (!nl_pat)
5971 goto nla_put_failure;
5972 pat_len = rdev->wowlan->patterns[i].pattern_len;
5973 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_MASK,
5974 DIV_ROUND_UP(pat_len, 8),
5975 rdev->wowlan->patterns[i].mask);
5976 NLA_PUT(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
5977 pat_len,
5978 rdev->wowlan->patterns[i].pattern);
5979 nla_nest_end(msg, nl_pat);
5980 }
5981 nla_nest_end(msg, nl_pats);
5982 }
5983
5984 nla_nest_end(msg, nl_wowlan);
5985 }
5986
5987 genlmsg_end(msg, hdr);
5988 return genlmsg_reply(msg, info);
5989
5990 nla_put_failure:
5991 nlmsg_free(msg);
5992 return -ENOBUFS;
5993 }
5994
5995 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
5996 {
5997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5998 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
5999 struct cfg80211_wowlan no_triggers = {};
6000 struct cfg80211_wowlan new_triggers = {};
6001 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6002 int err, i;
6003
6004 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6005 return -EOPNOTSUPP;
6006
6007 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
6008 goto no_triggers;
6009
6010 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6011 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6012 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6013 nl80211_wowlan_policy);
6014 if (err)
6015 return err;
6016
6017 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6018 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6019 return -EINVAL;
6020 new_triggers.any = true;
6021 }
6022
6023 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6024 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6025 return -EINVAL;
6026 new_triggers.disconnect = true;
6027 }
6028
6029 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6030 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6031 return -EINVAL;
6032 new_triggers.magic_pkt = true;
6033 }
6034
6035 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6036 return -EINVAL;
6037
6038 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6039 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6040 return -EINVAL;
6041 new_triggers.gtk_rekey_failure = true;
6042 }
6043
6044 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6045 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6046 return -EINVAL;
6047 new_triggers.eap_identity_req = true;
6048 }
6049
6050 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6051 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6052 return -EINVAL;
6053 new_triggers.four_way_handshake = true;
6054 }
6055
6056 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6057 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6058 return -EINVAL;
6059 new_triggers.rfkill_release = true;
6060 }
6061
6062 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6063 struct nlattr *pat;
6064 int n_patterns = 0;
6065 int rem, pat_len, mask_len;
6066 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6067
6068 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6069 rem)
6070 n_patterns++;
6071 if (n_patterns > wowlan->n_patterns)
6072 return -EINVAL;
6073
6074 new_triggers.patterns = kcalloc(n_patterns,
6075 sizeof(new_triggers.patterns[0]),
6076 GFP_KERNEL);
6077 if (!new_triggers.patterns)
6078 return -ENOMEM;
6079
6080 new_triggers.n_patterns = n_patterns;
6081 i = 0;
6082
6083 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6084 rem) {
6085 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6086 nla_data(pat), nla_len(pat), NULL);
6087 err = -EINVAL;
6088 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6089 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6090 goto error;
6091 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6092 mask_len = DIV_ROUND_UP(pat_len, 8);
6093 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6094 mask_len)
6095 goto error;
6096 if (pat_len > wowlan->pattern_max_len ||
6097 pat_len < wowlan->pattern_min_len)
6098 goto error;
6099
6100 new_triggers.patterns[i].mask =
6101 kmalloc(mask_len + pat_len, GFP_KERNEL);
6102 if (!new_triggers.patterns[i].mask) {
6103 err = -ENOMEM;
6104 goto error;
6105 }
6106 new_triggers.patterns[i].pattern =
6107 new_triggers.patterns[i].mask + mask_len;
6108 memcpy(new_triggers.patterns[i].mask,
6109 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6110 mask_len);
6111 new_triggers.patterns[i].pattern_len = pat_len;
6112 memcpy(new_triggers.patterns[i].pattern,
6113 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6114 pat_len);
6115 i++;
6116 }
6117 }
6118
6119 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6120 struct cfg80211_wowlan *ntrig;
6121 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6122 GFP_KERNEL);
6123 if (!ntrig) {
6124 err = -ENOMEM;
6125 goto error;
6126 }
6127 cfg80211_rdev_free_wowlan(rdev);
6128 rdev->wowlan = ntrig;
6129 } else {
6130 no_triggers:
6131 cfg80211_rdev_free_wowlan(rdev);
6132 rdev->wowlan = NULL;
6133 }
6134
6135 return 0;
6136 error:
6137 for (i = 0; i < new_triggers.n_patterns; i++)
6138 kfree(new_triggers.patterns[i].mask);
6139 kfree(new_triggers.patterns);
6140 return err;
6141 }
6142
6143 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6144 {
6145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6146 struct net_device *dev = info->user_ptr[1];
6147 struct wireless_dev *wdev = dev->ieee80211_ptr;
6148 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6149 struct cfg80211_gtk_rekey_data rekey_data;
6150 int err;
6151
6152 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6153 return -EINVAL;
6154
6155 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6156 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6157 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6158 nl80211_rekey_policy);
6159 if (err)
6160 return err;
6161
6162 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6163 return -ERANGE;
6164 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6165 return -ERANGE;
6166 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6167 return -ERANGE;
6168
6169 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6170 NL80211_KEK_LEN);
6171 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6172 NL80211_KCK_LEN);
6173 memcpy(rekey_data.replay_ctr,
6174 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6175 NL80211_REPLAY_CTR_LEN);
6176
6177 wdev_lock(wdev);
6178 if (!wdev->current_bss) {
6179 err = -ENOTCONN;
6180 goto out;
6181 }
6182
6183 if (!rdev->ops->set_rekey_data) {
6184 err = -EOPNOTSUPP;
6185 goto out;
6186 }
6187
6188 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6189 out:
6190 wdev_unlock(wdev);
6191 return err;
6192 }
6193
6194 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6195 struct genl_info *info)
6196 {
6197 struct net_device *dev = info->user_ptr[1];
6198 struct wireless_dev *wdev = dev->ieee80211_ptr;
6199
6200 if (wdev->iftype != NL80211_IFTYPE_AP &&
6201 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6202 return -EINVAL;
6203
6204 if (wdev->ap_unexpected_nlpid)
6205 return -EBUSY;
6206
6207 wdev->ap_unexpected_nlpid = info->snd_pid;
6208 return 0;
6209 }
6210
6211 static int nl80211_probe_client(struct sk_buff *skb,
6212 struct genl_info *info)
6213 {
6214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6215 struct net_device *dev = info->user_ptr[1];
6216 struct wireless_dev *wdev = dev->ieee80211_ptr;
6217 struct sk_buff *msg;
6218 void *hdr;
6219 const u8 *addr;
6220 u64 cookie;
6221 int err;
6222
6223 if (wdev->iftype != NL80211_IFTYPE_AP &&
6224 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6225 return -EOPNOTSUPP;
6226
6227 if (!info->attrs[NL80211_ATTR_MAC])
6228 return -EINVAL;
6229
6230 if (!rdev->ops->probe_client)
6231 return -EOPNOTSUPP;
6232
6233 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6234 if (!msg)
6235 return -ENOMEM;
6236
6237 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6238 NL80211_CMD_PROBE_CLIENT);
6239
6240 if (IS_ERR(hdr)) {
6241 err = PTR_ERR(hdr);
6242 goto free_msg;
6243 }
6244
6245 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6246
6247 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6248 if (err)
6249 goto free_msg;
6250
6251 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
6252
6253 genlmsg_end(msg, hdr);
6254
6255 return genlmsg_reply(msg, info);
6256
6257 nla_put_failure:
6258 err = -ENOBUFS;
6259 free_msg:
6260 nlmsg_free(msg);
6261 return err;
6262 }
6263
6264 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6265 {
6266 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6267
6268 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6269 return -EOPNOTSUPP;
6270
6271 if (rdev->ap_beacons_nlpid)
6272 return -EBUSY;
6273
6274 rdev->ap_beacons_nlpid = info->snd_pid;
6275
6276 return 0;
6277 }
6278
6279 #define NL80211_FLAG_NEED_WIPHY 0x01
6280 #define NL80211_FLAG_NEED_NETDEV 0x02
6281 #define NL80211_FLAG_NEED_RTNL 0x04
6282 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6283 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6284 NL80211_FLAG_CHECK_NETDEV_UP)
6285
6286 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6287 struct genl_info *info)
6288 {
6289 struct cfg80211_registered_device *rdev;
6290 struct net_device *dev;
6291 int err;
6292 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6293
6294 if (rtnl)
6295 rtnl_lock();
6296
6297 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6298 rdev = cfg80211_get_dev_from_info(info);
6299 if (IS_ERR(rdev)) {
6300 if (rtnl)
6301 rtnl_unlock();
6302 return PTR_ERR(rdev);
6303 }
6304 info->user_ptr[0] = rdev;
6305 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6306 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6307 &rdev, &dev);
6308 if (err) {
6309 if (rtnl)
6310 rtnl_unlock();
6311 return err;
6312 }
6313 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6314 !netif_running(dev)) {
6315 cfg80211_unlock_rdev(rdev);
6316 dev_put(dev);
6317 if (rtnl)
6318 rtnl_unlock();
6319 return -ENETDOWN;
6320 }
6321 info->user_ptr[0] = rdev;
6322 info->user_ptr[1] = dev;
6323 }
6324
6325 return 0;
6326 }
6327
6328 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6329 struct genl_info *info)
6330 {
6331 if (info->user_ptr[0])
6332 cfg80211_unlock_rdev(info->user_ptr[0]);
6333 if (info->user_ptr[1])
6334 dev_put(info->user_ptr[1]);
6335 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6336 rtnl_unlock();
6337 }
6338
6339 static struct genl_ops nl80211_ops[] = {
6340 {
6341 .cmd = NL80211_CMD_GET_WIPHY,
6342 .doit = nl80211_get_wiphy,
6343 .dumpit = nl80211_dump_wiphy,
6344 .policy = nl80211_policy,
6345 /* can be retrieved by unprivileged users */
6346 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6347 },
6348 {
6349 .cmd = NL80211_CMD_SET_WIPHY,
6350 .doit = nl80211_set_wiphy,
6351 .policy = nl80211_policy,
6352 .flags = GENL_ADMIN_PERM,
6353 .internal_flags = NL80211_FLAG_NEED_RTNL,
6354 },
6355 {
6356 .cmd = NL80211_CMD_GET_INTERFACE,
6357 .doit = nl80211_get_interface,
6358 .dumpit = nl80211_dump_interface,
6359 .policy = nl80211_policy,
6360 /* can be retrieved by unprivileged users */
6361 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6362 },
6363 {
6364 .cmd = NL80211_CMD_SET_INTERFACE,
6365 .doit = nl80211_set_interface,
6366 .policy = nl80211_policy,
6367 .flags = GENL_ADMIN_PERM,
6368 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6369 NL80211_FLAG_NEED_RTNL,
6370 },
6371 {
6372 .cmd = NL80211_CMD_NEW_INTERFACE,
6373 .doit = nl80211_new_interface,
6374 .policy = nl80211_policy,
6375 .flags = GENL_ADMIN_PERM,
6376 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6377 NL80211_FLAG_NEED_RTNL,
6378 },
6379 {
6380 .cmd = NL80211_CMD_DEL_INTERFACE,
6381 .doit = nl80211_del_interface,
6382 .policy = nl80211_policy,
6383 .flags = GENL_ADMIN_PERM,
6384 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6385 NL80211_FLAG_NEED_RTNL,
6386 },
6387 {
6388 .cmd = NL80211_CMD_GET_KEY,
6389 .doit = nl80211_get_key,
6390 .policy = nl80211_policy,
6391 .flags = GENL_ADMIN_PERM,
6392 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6393 NL80211_FLAG_NEED_RTNL,
6394 },
6395 {
6396 .cmd = NL80211_CMD_SET_KEY,
6397 .doit = nl80211_set_key,
6398 .policy = nl80211_policy,
6399 .flags = GENL_ADMIN_PERM,
6400 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6401 NL80211_FLAG_NEED_RTNL,
6402 },
6403 {
6404 .cmd = NL80211_CMD_NEW_KEY,
6405 .doit = nl80211_new_key,
6406 .policy = nl80211_policy,
6407 .flags = GENL_ADMIN_PERM,
6408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6409 NL80211_FLAG_NEED_RTNL,
6410 },
6411 {
6412 .cmd = NL80211_CMD_DEL_KEY,
6413 .doit = nl80211_del_key,
6414 .policy = nl80211_policy,
6415 .flags = GENL_ADMIN_PERM,
6416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6417 NL80211_FLAG_NEED_RTNL,
6418 },
6419 {
6420 .cmd = NL80211_CMD_SET_BEACON,
6421 .policy = nl80211_policy,
6422 .flags = GENL_ADMIN_PERM,
6423 .doit = nl80211_set_beacon,
6424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6425 NL80211_FLAG_NEED_RTNL,
6426 },
6427 {
6428 .cmd = NL80211_CMD_START_AP,
6429 .policy = nl80211_policy,
6430 .flags = GENL_ADMIN_PERM,
6431 .doit = nl80211_start_ap,
6432 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6433 NL80211_FLAG_NEED_RTNL,
6434 },
6435 {
6436 .cmd = NL80211_CMD_STOP_AP,
6437 .policy = nl80211_policy,
6438 .flags = GENL_ADMIN_PERM,
6439 .doit = nl80211_stop_ap,
6440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6441 NL80211_FLAG_NEED_RTNL,
6442 },
6443 {
6444 .cmd = NL80211_CMD_GET_STATION,
6445 .doit = nl80211_get_station,
6446 .dumpit = nl80211_dump_station,
6447 .policy = nl80211_policy,
6448 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6449 NL80211_FLAG_NEED_RTNL,
6450 },
6451 {
6452 .cmd = NL80211_CMD_SET_STATION,
6453 .doit = nl80211_set_station,
6454 .policy = nl80211_policy,
6455 .flags = GENL_ADMIN_PERM,
6456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6457 NL80211_FLAG_NEED_RTNL,
6458 },
6459 {
6460 .cmd = NL80211_CMD_NEW_STATION,
6461 .doit = nl80211_new_station,
6462 .policy = nl80211_policy,
6463 .flags = GENL_ADMIN_PERM,
6464 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6465 NL80211_FLAG_NEED_RTNL,
6466 },
6467 {
6468 .cmd = NL80211_CMD_DEL_STATION,
6469 .doit = nl80211_del_station,
6470 .policy = nl80211_policy,
6471 .flags = GENL_ADMIN_PERM,
6472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6473 NL80211_FLAG_NEED_RTNL,
6474 },
6475 {
6476 .cmd = NL80211_CMD_GET_MPATH,
6477 .doit = nl80211_get_mpath,
6478 .dumpit = nl80211_dump_mpath,
6479 .policy = nl80211_policy,
6480 .flags = GENL_ADMIN_PERM,
6481 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6482 NL80211_FLAG_NEED_RTNL,
6483 },
6484 {
6485 .cmd = NL80211_CMD_SET_MPATH,
6486 .doit = nl80211_set_mpath,
6487 .policy = nl80211_policy,
6488 .flags = GENL_ADMIN_PERM,
6489 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6490 NL80211_FLAG_NEED_RTNL,
6491 },
6492 {
6493 .cmd = NL80211_CMD_NEW_MPATH,
6494 .doit = nl80211_new_mpath,
6495 .policy = nl80211_policy,
6496 .flags = GENL_ADMIN_PERM,
6497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6498 NL80211_FLAG_NEED_RTNL,
6499 },
6500 {
6501 .cmd = NL80211_CMD_DEL_MPATH,
6502 .doit = nl80211_del_mpath,
6503 .policy = nl80211_policy,
6504 .flags = GENL_ADMIN_PERM,
6505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6506 NL80211_FLAG_NEED_RTNL,
6507 },
6508 {
6509 .cmd = NL80211_CMD_SET_BSS,
6510 .doit = nl80211_set_bss,
6511 .policy = nl80211_policy,
6512 .flags = GENL_ADMIN_PERM,
6513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6514 NL80211_FLAG_NEED_RTNL,
6515 },
6516 {
6517 .cmd = NL80211_CMD_GET_REG,
6518 .doit = nl80211_get_reg,
6519 .policy = nl80211_policy,
6520 /* can be retrieved by unprivileged users */
6521 },
6522 {
6523 .cmd = NL80211_CMD_SET_REG,
6524 .doit = nl80211_set_reg,
6525 .policy = nl80211_policy,
6526 .flags = GENL_ADMIN_PERM,
6527 },
6528 {
6529 .cmd = NL80211_CMD_REQ_SET_REG,
6530 .doit = nl80211_req_set_reg,
6531 .policy = nl80211_policy,
6532 .flags = GENL_ADMIN_PERM,
6533 },
6534 {
6535 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6536 .doit = nl80211_get_mesh_config,
6537 .policy = nl80211_policy,
6538 /* can be retrieved by unprivileged users */
6539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6540 NL80211_FLAG_NEED_RTNL,
6541 },
6542 {
6543 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6544 .doit = nl80211_update_mesh_config,
6545 .policy = nl80211_policy,
6546 .flags = GENL_ADMIN_PERM,
6547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6548 NL80211_FLAG_NEED_RTNL,
6549 },
6550 {
6551 .cmd = NL80211_CMD_TRIGGER_SCAN,
6552 .doit = nl80211_trigger_scan,
6553 .policy = nl80211_policy,
6554 .flags = GENL_ADMIN_PERM,
6555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6556 NL80211_FLAG_NEED_RTNL,
6557 },
6558 {
6559 .cmd = NL80211_CMD_GET_SCAN,
6560 .policy = nl80211_policy,
6561 .dumpit = nl80211_dump_scan,
6562 },
6563 {
6564 .cmd = NL80211_CMD_START_SCHED_SCAN,
6565 .doit = nl80211_start_sched_scan,
6566 .policy = nl80211_policy,
6567 .flags = GENL_ADMIN_PERM,
6568 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6569 NL80211_FLAG_NEED_RTNL,
6570 },
6571 {
6572 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6573 .doit = nl80211_stop_sched_scan,
6574 .policy = nl80211_policy,
6575 .flags = GENL_ADMIN_PERM,
6576 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6577 NL80211_FLAG_NEED_RTNL,
6578 },
6579 {
6580 .cmd = NL80211_CMD_AUTHENTICATE,
6581 .doit = nl80211_authenticate,
6582 .policy = nl80211_policy,
6583 .flags = GENL_ADMIN_PERM,
6584 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6585 NL80211_FLAG_NEED_RTNL,
6586 },
6587 {
6588 .cmd = NL80211_CMD_ASSOCIATE,
6589 .doit = nl80211_associate,
6590 .policy = nl80211_policy,
6591 .flags = GENL_ADMIN_PERM,
6592 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6593 NL80211_FLAG_NEED_RTNL,
6594 },
6595 {
6596 .cmd = NL80211_CMD_DEAUTHENTICATE,
6597 .doit = nl80211_deauthenticate,
6598 .policy = nl80211_policy,
6599 .flags = GENL_ADMIN_PERM,
6600 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6601 NL80211_FLAG_NEED_RTNL,
6602 },
6603 {
6604 .cmd = NL80211_CMD_DISASSOCIATE,
6605 .doit = nl80211_disassociate,
6606 .policy = nl80211_policy,
6607 .flags = GENL_ADMIN_PERM,
6608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6609 NL80211_FLAG_NEED_RTNL,
6610 },
6611 {
6612 .cmd = NL80211_CMD_JOIN_IBSS,
6613 .doit = nl80211_join_ibss,
6614 .policy = nl80211_policy,
6615 .flags = GENL_ADMIN_PERM,
6616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6617 NL80211_FLAG_NEED_RTNL,
6618 },
6619 {
6620 .cmd = NL80211_CMD_LEAVE_IBSS,
6621 .doit = nl80211_leave_ibss,
6622 .policy = nl80211_policy,
6623 .flags = GENL_ADMIN_PERM,
6624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6625 NL80211_FLAG_NEED_RTNL,
6626 },
6627 #ifdef CONFIG_NL80211_TESTMODE
6628 {
6629 .cmd = NL80211_CMD_TESTMODE,
6630 .doit = nl80211_testmode_do,
6631 .dumpit = nl80211_testmode_dump,
6632 .policy = nl80211_policy,
6633 .flags = GENL_ADMIN_PERM,
6634 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6635 NL80211_FLAG_NEED_RTNL,
6636 },
6637 #endif
6638 {
6639 .cmd = NL80211_CMD_CONNECT,
6640 .doit = nl80211_connect,
6641 .policy = nl80211_policy,
6642 .flags = GENL_ADMIN_PERM,
6643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6644 NL80211_FLAG_NEED_RTNL,
6645 },
6646 {
6647 .cmd = NL80211_CMD_DISCONNECT,
6648 .doit = nl80211_disconnect,
6649 .policy = nl80211_policy,
6650 .flags = GENL_ADMIN_PERM,
6651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6652 NL80211_FLAG_NEED_RTNL,
6653 },
6654 {
6655 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6656 .doit = nl80211_wiphy_netns,
6657 .policy = nl80211_policy,
6658 .flags = GENL_ADMIN_PERM,
6659 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6660 NL80211_FLAG_NEED_RTNL,
6661 },
6662 {
6663 .cmd = NL80211_CMD_GET_SURVEY,
6664 .policy = nl80211_policy,
6665 .dumpit = nl80211_dump_survey,
6666 },
6667 {
6668 .cmd = NL80211_CMD_SET_PMKSA,
6669 .doit = nl80211_setdel_pmksa,
6670 .policy = nl80211_policy,
6671 .flags = GENL_ADMIN_PERM,
6672 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6673 NL80211_FLAG_NEED_RTNL,
6674 },
6675 {
6676 .cmd = NL80211_CMD_DEL_PMKSA,
6677 .doit = nl80211_setdel_pmksa,
6678 .policy = nl80211_policy,
6679 .flags = GENL_ADMIN_PERM,
6680 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6681 NL80211_FLAG_NEED_RTNL,
6682 },
6683 {
6684 .cmd = NL80211_CMD_FLUSH_PMKSA,
6685 .doit = nl80211_flush_pmksa,
6686 .policy = nl80211_policy,
6687 .flags = GENL_ADMIN_PERM,
6688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6689 NL80211_FLAG_NEED_RTNL,
6690 },
6691 {
6692 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
6693 .doit = nl80211_remain_on_channel,
6694 .policy = nl80211_policy,
6695 .flags = GENL_ADMIN_PERM,
6696 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6697 NL80211_FLAG_NEED_RTNL,
6698 },
6699 {
6700 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
6701 .doit = nl80211_cancel_remain_on_channel,
6702 .policy = nl80211_policy,
6703 .flags = GENL_ADMIN_PERM,
6704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6705 NL80211_FLAG_NEED_RTNL,
6706 },
6707 {
6708 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
6709 .doit = nl80211_set_tx_bitrate_mask,
6710 .policy = nl80211_policy,
6711 .flags = GENL_ADMIN_PERM,
6712 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6713 NL80211_FLAG_NEED_RTNL,
6714 },
6715 {
6716 .cmd = NL80211_CMD_REGISTER_FRAME,
6717 .doit = nl80211_register_mgmt,
6718 .policy = nl80211_policy,
6719 .flags = GENL_ADMIN_PERM,
6720 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6721 NL80211_FLAG_NEED_RTNL,
6722 },
6723 {
6724 .cmd = NL80211_CMD_FRAME,
6725 .doit = nl80211_tx_mgmt,
6726 .policy = nl80211_policy,
6727 .flags = GENL_ADMIN_PERM,
6728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6729 NL80211_FLAG_NEED_RTNL,
6730 },
6731 {
6732 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
6733 .doit = nl80211_tx_mgmt_cancel_wait,
6734 .policy = nl80211_policy,
6735 .flags = GENL_ADMIN_PERM,
6736 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6737 NL80211_FLAG_NEED_RTNL,
6738 },
6739 {
6740 .cmd = NL80211_CMD_SET_POWER_SAVE,
6741 .doit = nl80211_set_power_save,
6742 .policy = nl80211_policy,
6743 .flags = GENL_ADMIN_PERM,
6744 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6745 NL80211_FLAG_NEED_RTNL,
6746 },
6747 {
6748 .cmd = NL80211_CMD_GET_POWER_SAVE,
6749 .doit = nl80211_get_power_save,
6750 .policy = nl80211_policy,
6751 /* can be retrieved by unprivileged users */
6752 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6753 NL80211_FLAG_NEED_RTNL,
6754 },
6755 {
6756 .cmd = NL80211_CMD_SET_CQM,
6757 .doit = nl80211_set_cqm,
6758 .policy = nl80211_policy,
6759 .flags = GENL_ADMIN_PERM,
6760 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6761 NL80211_FLAG_NEED_RTNL,
6762 },
6763 {
6764 .cmd = NL80211_CMD_SET_CHANNEL,
6765 .doit = nl80211_set_channel,
6766 .policy = nl80211_policy,
6767 .flags = GENL_ADMIN_PERM,
6768 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6769 NL80211_FLAG_NEED_RTNL,
6770 },
6771 {
6772 .cmd = NL80211_CMD_SET_WDS_PEER,
6773 .doit = nl80211_set_wds_peer,
6774 .policy = nl80211_policy,
6775 .flags = GENL_ADMIN_PERM,
6776 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6777 NL80211_FLAG_NEED_RTNL,
6778 },
6779 {
6780 .cmd = NL80211_CMD_JOIN_MESH,
6781 .doit = nl80211_join_mesh,
6782 .policy = nl80211_policy,
6783 .flags = GENL_ADMIN_PERM,
6784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6785 NL80211_FLAG_NEED_RTNL,
6786 },
6787 {
6788 .cmd = NL80211_CMD_LEAVE_MESH,
6789 .doit = nl80211_leave_mesh,
6790 .policy = nl80211_policy,
6791 .flags = GENL_ADMIN_PERM,
6792 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6793 NL80211_FLAG_NEED_RTNL,
6794 },
6795 {
6796 .cmd = NL80211_CMD_GET_WOWLAN,
6797 .doit = nl80211_get_wowlan,
6798 .policy = nl80211_policy,
6799 /* can be retrieved by unprivileged users */
6800 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6801 NL80211_FLAG_NEED_RTNL,
6802 },
6803 {
6804 .cmd = NL80211_CMD_SET_WOWLAN,
6805 .doit = nl80211_set_wowlan,
6806 .policy = nl80211_policy,
6807 .flags = GENL_ADMIN_PERM,
6808 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6809 NL80211_FLAG_NEED_RTNL,
6810 },
6811 {
6812 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
6813 .doit = nl80211_set_rekey_data,
6814 .policy = nl80211_policy,
6815 .flags = GENL_ADMIN_PERM,
6816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6817 NL80211_FLAG_NEED_RTNL,
6818 },
6819 {
6820 .cmd = NL80211_CMD_TDLS_MGMT,
6821 .doit = nl80211_tdls_mgmt,
6822 .policy = nl80211_policy,
6823 .flags = GENL_ADMIN_PERM,
6824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6825 NL80211_FLAG_NEED_RTNL,
6826 },
6827 {
6828 .cmd = NL80211_CMD_TDLS_OPER,
6829 .doit = nl80211_tdls_oper,
6830 .policy = nl80211_policy,
6831 .flags = GENL_ADMIN_PERM,
6832 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6833 NL80211_FLAG_NEED_RTNL,
6834 },
6835 {
6836 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
6837 .doit = nl80211_register_unexpected_frame,
6838 .policy = nl80211_policy,
6839 .flags = GENL_ADMIN_PERM,
6840 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6841 NL80211_FLAG_NEED_RTNL,
6842 },
6843 {
6844 .cmd = NL80211_CMD_PROBE_CLIENT,
6845 .doit = nl80211_probe_client,
6846 .policy = nl80211_policy,
6847 .flags = GENL_ADMIN_PERM,
6848 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6849 NL80211_FLAG_NEED_RTNL,
6850 },
6851 {
6852 .cmd = NL80211_CMD_REGISTER_BEACONS,
6853 .doit = nl80211_register_beacons,
6854 .policy = nl80211_policy,
6855 .flags = GENL_ADMIN_PERM,
6856 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6857 NL80211_FLAG_NEED_RTNL,
6858 },
6859 {
6860 .cmd = NL80211_CMD_SET_NOACK_MAP,
6861 .doit = nl80211_set_noack_map,
6862 .policy = nl80211_policy,
6863 .flags = GENL_ADMIN_PERM,
6864 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6865 NL80211_FLAG_NEED_RTNL,
6866 },
6867
6868 };
6869
6870 static struct genl_multicast_group nl80211_mlme_mcgrp = {
6871 .name = "mlme",
6872 };
6873
6874 /* multicast groups */
6875 static struct genl_multicast_group nl80211_config_mcgrp = {
6876 .name = "config",
6877 };
6878 static struct genl_multicast_group nl80211_scan_mcgrp = {
6879 .name = "scan",
6880 };
6881 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
6882 .name = "regulatory",
6883 };
6884
6885 /* notification functions */
6886
6887 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
6888 {
6889 struct sk_buff *msg;
6890
6891 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6892 if (!msg)
6893 return;
6894
6895 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
6896 nlmsg_free(msg);
6897 return;
6898 }
6899
6900 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
6901 nl80211_config_mcgrp.id, GFP_KERNEL);
6902 }
6903
6904 static int nl80211_add_scan_req(struct sk_buff *msg,
6905 struct cfg80211_registered_device *rdev)
6906 {
6907 struct cfg80211_scan_request *req = rdev->scan_req;
6908 struct nlattr *nest;
6909 int i;
6910
6911 ASSERT_RDEV_LOCK(rdev);
6912
6913 if (WARN_ON(!req))
6914 return 0;
6915
6916 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
6917 if (!nest)
6918 goto nla_put_failure;
6919 for (i = 0; i < req->n_ssids; i++)
6920 NLA_PUT(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid);
6921 nla_nest_end(msg, nest);
6922
6923 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
6924 if (!nest)
6925 goto nla_put_failure;
6926 for (i = 0; i < req->n_channels; i++)
6927 NLA_PUT_U32(msg, i, req->channels[i]->center_freq);
6928 nla_nest_end(msg, nest);
6929
6930 if (req->ie)
6931 NLA_PUT(msg, NL80211_ATTR_IE, req->ie_len, req->ie);
6932
6933 return 0;
6934 nla_put_failure:
6935 return -ENOBUFS;
6936 }
6937
6938 static int nl80211_send_scan_msg(struct sk_buff *msg,
6939 struct cfg80211_registered_device *rdev,
6940 struct net_device *netdev,
6941 u32 pid, u32 seq, int flags,
6942 u32 cmd)
6943 {
6944 void *hdr;
6945
6946 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6947 if (!hdr)
6948 return -1;
6949
6950 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6951 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6952
6953 /* ignore errors and send incomplete event anyway */
6954 nl80211_add_scan_req(msg, rdev);
6955
6956 return genlmsg_end(msg, hdr);
6957
6958 nla_put_failure:
6959 genlmsg_cancel(msg, hdr);
6960 return -EMSGSIZE;
6961 }
6962
6963 static int
6964 nl80211_send_sched_scan_msg(struct sk_buff *msg,
6965 struct cfg80211_registered_device *rdev,
6966 struct net_device *netdev,
6967 u32 pid, u32 seq, int flags, u32 cmd)
6968 {
6969 void *hdr;
6970
6971 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
6972 if (!hdr)
6973 return -1;
6974
6975 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
6976 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
6977
6978 return genlmsg_end(msg, hdr);
6979
6980 nla_put_failure:
6981 genlmsg_cancel(msg, hdr);
6982 return -EMSGSIZE;
6983 }
6984
6985 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
6986 struct net_device *netdev)
6987 {
6988 struct sk_buff *msg;
6989
6990 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
6991 if (!msg)
6992 return;
6993
6994 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
6995 NL80211_CMD_TRIGGER_SCAN) < 0) {
6996 nlmsg_free(msg);
6997 return;
6998 }
6999
7000 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7001 nl80211_scan_mcgrp.id, GFP_KERNEL);
7002 }
7003
7004 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7005 struct net_device *netdev)
7006 {
7007 struct sk_buff *msg;
7008
7009 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7010 if (!msg)
7011 return;
7012
7013 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7014 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7015 nlmsg_free(msg);
7016 return;
7017 }
7018
7019 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7020 nl80211_scan_mcgrp.id, GFP_KERNEL);
7021 }
7022
7023 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7024 struct net_device *netdev)
7025 {
7026 struct sk_buff *msg;
7027
7028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7029 if (!msg)
7030 return;
7031
7032 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7033 NL80211_CMD_SCAN_ABORTED) < 0) {
7034 nlmsg_free(msg);
7035 return;
7036 }
7037
7038 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7039 nl80211_scan_mcgrp.id, GFP_KERNEL);
7040 }
7041
7042 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7043 struct net_device *netdev)
7044 {
7045 struct sk_buff *msg;
7046
7047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7048 if (!msg)
7049 return;
7050
7051 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7052 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7053 nlmsg_free(msg);
7054 return;
7055 }
7056
7057 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7058 nl80211_scan_mcgrp.id, GFP_KERNEL);
7059 }
7060
7061 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7062 struct net_device *netdev, u32 cmd)
7063 {
7064 struct sk_buff *msg;
7065
7066 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7067 if (!msg)
7068 return;
7069
7070 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 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 /*
7080 * This can happen on global regulatory changes or device specific settings
7081 * based on custom world regulatory domains.
7082 */
7083 void nl80211_send_reg_change_event(struct regulatory_request *request)
7084 {
7085 struct sk_buff *msg;
7086 void *hdr;
7087
7088 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7089 if (!msg)
7090 return;
7091
7092 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7093 if (!hdr) {
7094 nlmsg_free(msg);
7095 return;
7096 }
7097
7098 /* Userspace can always count this one always being set */
7099 NLA_PUT_U8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator);
7100
7101 if (request->alpha2[0] == '0' && request->alpha2[1] == '0')
7102 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7103 NL80211_REGDOM_TYPE_WORLD);
7104 else if (request->alpha2[0] == '9' && request->alpha2[1] == '9')
7105 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7106 NL80211_REGDOM_TYPE_CUSTOM_WORLD);
7107 else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7108 request->intersect)
7109 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7110 NL80211_REGDOM_TYPE_INTERSECTION);
7111 else {
7112 NLA_PUT_U8(msg, NL80211_ATTR_REG_TYPE,
7113 NL80211_REGDOM_TYPE_COUNTRY);
7114 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, request->alpha2);
7115 }
7116
7117 if (wiphy_idx_valid(request->wiphy_idx))
7118 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx);
7119
7120 genlmsg_end(msg, hdr);
7121
7122 rcu_read_lock();
7123 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7124 GFP_ATOMIC);
7125 rcu_read_unlock();
7126
7127 return;
7128
7129 nla_put_failure:
7130 genlmsg_cancel(msg, hdr);
7131 nlmsg_free(msg);
7132 }
7133
7134 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7135 struct net_device *netdev,
7136 const u8 *buf, size_t len,
7137 enum nl80211_commands cmd, gfp_t gfp)
7138 {
7139 struct sk_buff *msg;
7140 void *hdr;
7141
7142 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7143 if (!msg)
7144 return;
7145
7146 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7147 if (!hdr) {
7148 nlmsg_free(msg);
7149 return;
7150 }
7151
7152 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7153 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7154 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7155
7156 genlmsg_end(msg, hdr);
7157
7158 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7159 nl80211_mlme_mcgrp.id, gfp);
7160 return;
7161
7162 nla_put_failure:
7163 genlmsg_cancel(msg, hdr);
7164 nlmsg_free(msg);
7165 }
7166
7167 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7168 struct net_device *netdev, const u8 *buf,
7169 size_t len, gfp_t gfp)
7170 {
7171 nl80211_send_mlme_event(rdev, netdev, buf, len,
7172 NL80211_CMD_AUTHENTICATE, gfp);
7173 }
7174
7175 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7176 struct net_device *netdev, const u8 *buf,
7177 size_t len, gfp_t gfp)
7178 {
7179 nl80211_send_mlme_event(rdev, netdev, buf, len,
7180 NL80211_CMD_ASSOCIATE, gfp);
7181 }
7182
7183 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7184 struct net_device *netdev, const u8 *buf,
7185 size_t len, gfp_t gfp)
7186 {
7187 nl80211_send_mlme_event(rdev, netdev, buf, len,
7188 NL80211_CMD_DEAUTHENTICATE, gfp);
7189 }
7190
7191 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7192 struct net_device *netdev, const u8 *buf,
7193 size_t len, gfp_t gfp)
7194 {
7195 nl80211_send_mlme_event(rdev, netdev, buf, len,
7196 NL80211_CMD_DISASSOCIATE, gfp);
7197 }
7198
7199 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7200 struct net_device *netdev, const u8 *buf,
7201 size_t len, gfp_t gfp)
7202 {
7203 nl80211_send_mlme_event(rdev, netdev, buf, len,
7204 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7205 }
7206
7207 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7208 struct net_device *netdev, const u8 *buf,
7209 size_t len, gfp_t gfp)
7210 {
7211 nl80211_send_mlme_event(rdev, netdev, buf, len,
7212 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7213 }
7214
7215 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7216 struct net_device *netdev, int cmd,
7217 const u8 *addr, gfp_t gfp)
7218 {
7219 struct sk_buff *msg;
7220 void *hdr;
7221
7222 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7223 if (!msg)
7224 return;
7225
7226 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7227 if (!hdr) {
7228 nlmsg_free(msg);
7229 return;
7230 }
7231
7232 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7233 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7234 NLA_PUT_FLAG(msg, NL80211_ATTR_TIMED_OUT);
7235 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7236
7237 genlmsg_end(msg, hdr);
7238
7239 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7240 nl80211_mlme_mcgrp.id, gfp);
7241 return;
7242
7243 nla_put_failure:
7244 genlmsg_cancel(msg, hdr);
7245 nlmsg_free(msg);
7246 }
7247
7248 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7249 struct net_device *netdev, const u8 *addr,
7250 gfp_t gfp)
7251 {
7252 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7253 addr, gfp);
7254 }
7255
7256 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7257 struct net_device *netdev, const u8 *addr,
7258 gfp_t gfp)
7259 {
7260 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7261 addr, gfp);
7262 }
7263
7264 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7265 struct net_device *netdev, const u8 *bssid,
7266 const u8 *req_ie, size_t req_ie_len,
7267 const u8 *resp_ie, size_t resp_ie_len,
7268 u16 status, gfp_t gfp)
7269 {
7270 struct sk_buff *msg;
7271 void *hdr;
7272
7273 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7274 if (!msg)
7275 return;
7276
7277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7278 if (!hdr) {
7279 nlmsg_free(msg);
7280 return;
7281 }
7282
7283 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7284 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7285 if (bssid)
7286 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7287 NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status);
7288 if (req_ie)
7289 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7290 if (resp_ie)
7291 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7292
7293 genlmsg_end(msg, hdr);
7294
7295 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7296 nl80211_mlme_mcgrp.id, gfp);
7297 return;
7298
7299 nla_put_failure:
7300 genlmsg_cancel(msg, hdr);
7301 nlmsg_free(msg);
7302
7303 }
7304
7305 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7306 struct net_device *netdev, const u8 *bssid,
7307 const u8 *req_ie, size_t req_ie_len,
7308 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7309 {
7310 struct sk_buff *msg;
7311 void *hdr;
7312
7313 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7314 if (!msg)
7315 return;
7316
7317 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7318 if (!hdr) {
7319 nlmsg_free(msg);
7320 return;
7321 }
7322
7323 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7324 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7325 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7326 if (req_ie)
7327 NLA_PUT(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie);
7328 if (resp_ie)
7329 NLA_PUT(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie);
7330
7331 genlmsg_end(msg, hdr);
7332
7333 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7334 nl80211_mlme_mcgrp.id, gfp);
7335 return;
7336
7337 nla_put_failure:
7338 genlmsg_cancel(msg, hdr);
7339 nlmsg_free(msg);
7340
7341 }
7342
7343 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7344 struct net_device *netdev, u16 reason,
7345 const u8 *ie, size_t ie_len, bool from_ap)
7346 {
7347 struct sk_buff *msg;
7348 void *hdr;
7349
7350 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7351 if (!msg)
7352 return;
7353
7354 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7355 if (!hdr) {
7356 nlmsg_free(msg);
7357 return;
7358 }
7359
7360 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7361 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7362 if (from_ap && reason)
7363 NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason);
7364 if (from_ap)
7365 NLA_PUT_FLAG(msg, NL80211_ATTR_DISCONNECTED_BY_AP);
7366 if (ie)
7367 NLA_PUT(msg, NL80211_ATTR_IE, ie_len, ie);
7368
7369 genlmsg_end(msg, hdr);
7370
7371 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7372 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7373 return;
7374
7375 nla_put_failure:
7376 genlmsg_cancel(msg, hdr);
7377 nlmsg_free(msg);
7378
7379 }
7380
7381 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7382 struct net_device *netdev, const u8 *bssid,
7383 gfp_t gfp)
7384 {
7385 struct sk_buff *msg;
7386 void *hdr;
7387
7388 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7389 if (!msg)
7390 return;
7391
7392 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7393 if (!hdr) {
7394 nlmsg_free(msg);
7395 return;
7396 }
7397
7398 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7399 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7400 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7401
7402 genlmsg_end(msg, hdr);
7403
7404 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7405 nl80211_mlme_mcgrp.id, gfp);
7406 return;
7407
7408 nla_put_failure:
7409 genlmsg_cancel(msg, hdr);
7410 nlmsg_free(msg);
7411 }
7412
7413 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7414 struct net_device *netdev,
7415 const u8 *macaddr, const u8* ie, u8 ie_len,
7416 gfp_t gfp)
7417 {
7418 struct sk_buff *msg;
7419 void *hdr;
7420
7421 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7422 if (!msg)
7423 return;
7424
7425 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7426 if (!hdr) {
7427 nlmsg_free(msg);
7428 return;
7429 }
7430
7431 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7432 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7433 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr);
7434 if (ie_len && ie)
7435 NLA_PUT(msg, NL80211_ATTR_IE, ie_len , ie);
7436
7437 genlmsg_end(msg, hdr);
7438
7439 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7440 nl80211_mlme_mcgrp.id, gfp);
7441 return;
7442
7443 nla_put_failure:
7444 genlmsg_cancel(msg, hdr);
7445 nlmsg_free(msg);
7446 }
7447
7448 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7449 struct net_device *netdev, const u8 *addr,
7450 enum nl80211_key_type key_type, int key_id,
7451 const u8 *tsc, gfp_t gfp)
7452 {
7453 struct sk_buff *msg;
7454 void *hdr;
7455
7456 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7457 if (!msg)
7458 return;
7459
7460 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7461 if (!hdr) {
7462 nlmsg_free(msg);
7463 return;
7464 }
7465
7466 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7467 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7468 if (addr)
7469 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7470 NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE, key_type);
7471 if (key_id != -1)
7472 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_id);
7473 if (tsc)
7474 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, 6, tsc);
7475
7476 genlmsg_end(msg, hdr);
7477
7478 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7479 nl80211_mlme_mcgrp.id, gfp);
7480 return;
7481
7482 nla_put_failure:
7483 genlmsg_cancel(msg, hdr);
7484 nlmsg_free(msg);
7485 }
7486
7487 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7488 struct ieee80211_channel *channel_before,
7489 struct ieee80211_channel *channel_after)
7490 {
7491 struct sk_buff *msg;
7492 void *hdr;
7493 struct nlattr *nl_freq;
7494
7495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7496 if (!msg)
7497 return;
7498
7499 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7500 if (!hdr) {
7501 nlmsg_free(msg);
7502 return;
7503 }
7504
7505 /*
7506 * Since we are applying the beacon hint to a wiphy we know its
7507 * wiphy_idx is valid
7508 */
7509 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy));
7510
7511 /* Before */
7512 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7513 if (!nl_freq)
7514 goto nla_put_failure;
7515 if (nl80211_msg_put_channel(msg, channel_before))
7516 goto nla_put_failure;
7517 nla_nest_end(msg, nl_freq);
7518
7519 /* After */
7520 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7521 if (!nl_freq)
7522 goto nla_put_failure;
7523 if (nl80211_msg_put_channel(msg, channel_after))
7524 goto nla_put_failure;
7525 nla_nest_end(msg, nl_freq);
7526
7527 genlmsg_end(msg, hdr);
7528
7529 rcu_read_lock();
7530 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7531 GFP_ATOMIC);
7532 rcu_read_unlock();
7533
7534 return;
7535
7536 nla_put_failure:
7537 genlmsg_cancel(msg, hdr);
7538 nlmsg_free(msg);
7539 }
7540
7541 static void nl80211_send_remain_on_chan_event(
7542 int cmd, struct cfg80211_registered_device *rdev,
7543 struct net_device *netdev, u64 cookie,
7544 struct ieee80211_channel *chan,
7545 enum nl80211_channel_type channel_type,
7546 unsigned int duration, gfp_t gfp)
7547 {
7548 struct sk_buff *msg;
7549 void *hdr;
7550
7551 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7552 if (!msg)
7553 return;
7554
7555 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7556 if (!hdr) {
7557 nlmsg_free(msg);
7558 return;
7559 }
7560
7561 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7562 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7563 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
7564 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
7565 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7566
7567 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
7568 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
7569
7570 genlmsg_end(msg, hdr);
7571
7572 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7573 nl80211_mlme_mcgrp.id, gfp);
7574 return;
7575
7576 nla_put_failure:
7577 genlmsg_cancel(msg, hdr);
7578 nlmsg_free(msg);
7579 }
7580
7581 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7582 struct net_device *netdev, u64 cookie,
7583 struct ieee80211_channel *chan,
7584 enum nl80211_channel_type channel_type,
7585 unsigned int duration, gfp_t gfp)
7586 {
7587 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7588 rdev, netdev, cookie, chan,
7589 channel_type, duration, gfp);
7590 }
7591
7592 void nl80211_send_remain_on_channel_cancel(
7593 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7594 u64 cookie, struct ieee80211_channel *chan,
7595 enum nl80211_channel_type channel_type, gfp_t gfp)
7596 {
7597 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7598 rdev, netdev, cookie, chan,
7599 channel_type, 0, gfp);
7600 }
7601
7602 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7603 struct net_device *dev, const u8 *mac_addr,
7604 struct station_info *sinfo, gfp_t gfp)
7605 {
7606 struct sk_buff *msg;
7607
7608 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7609 if (!msg)
7610 return;
7611
7612 if (nl80211_send_station(msg, 0, 0, 0,
7613 rdev, dev, mac_addr, sinfo) < 0) {
7614 nlmsg_free(msg);
7615 return;
7616 }
7617
7618 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7619 nl80211_mlme_mcgrp.id, gfp);
7620 }
7621
7622 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7623 struct net_device *dev, const u8 *mac_addr,
7624 gfp_t gfp)
7625 {
7626 struct sk_buff *msg;
7627 void *hdr;
7628
7629 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7630 if (!msg)
7631 return;
7632
7633 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7634 if (!hdr) {
7635 nlmsg_free(msg);
7636 return;
7637 }
7638
7639 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7640 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
7641
7642 genlmsg_end(msg, hdr);
7643
7644 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7645 nl80211_mlme_mcgrp.id, gfp);
7646 return;
7647
7648 nla_put_failure:
7649 genlmsg_cancel(msg, hdr);
7650 nlmsg_free(msg);
7651 }
7652
7653 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
7654 const u8 *addr, gfp_t gfp)
7655 {
7656 struct wireless_dev *wdev = dev->ieee80211_ptr;
7657 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7658 struct sk_buff *msg;
7659 void *hdr;
7660 int err;
7661 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
7662
7663 if (!nlpid)
7664 return false;
7665
7666 msg = nlmsg_new(100, gfp);
7667 if (!msg)
7668 return true;
7669
7670 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7671 if (!hdr) {
7672 nlmsg_free(msg);
7673 return true;
7674 }
7675
7676 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7677 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7678 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7679
7680 err = genlmsg_end(msg, hdr);
7681 if (err < 0) {
7682 nlmsg_free(msg);
7683 return true;
7684 }
7685
7686 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7687 return true;
7688
7689 nla_put_failure:
7690 genlmsg_cancel(msg, hdr);
7691 nlmsg_free(msg);
7692 return true;
7693 }
7694
7695 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
7696 {
7697 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
7698 addr, gfp);
7699 }
7700
7701 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
7702 const u8 *addr, gfp_t gfp)
7703 {
7704 return __nl80211_unexpected_frame(dev,
7705 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
7706 addr, gfp);
7707 }
7708
7709 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
7710 struct net_device *netdev, u32 nlpid,
7711 int freq, int sig_dbm,
7712 const u8 *buf, size_t len, gfp_t gfp)
7713 {
7714 struct sk_buff *msg;
7715 void *hdr;
7716
7717 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7718 if (!msg)
7719 return -ENOMEM;
7720
7721 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
7722 if (!hdr) {
7723 nlmsg_free(msg);
7724 return -ENOMEM;
7725 }
7726
7727 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7728 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7729 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
7730 if (sig_dbm)
7731 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
7732 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7733
7734 genlmsg_end(msg, hdr);
7735
7736 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
7737
7738 nla_put_failure:
7739 genlmsg_cancel(msg, hdr);
7740 nlmsg_free(msg);
7741 return -ENOBUFS;
7742 }
7743
7744 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
7745 struct net_device *netdev, u64 cookie,
7746 const u8 *buf, size_t len, bool ack,
7747 gfp_t gfp)
7748 {
7749 struct sk_buff *msg;
7750 void *hdr;
7751
7752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7753 if (!msg)
7754 return;
7755
7756 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
7757 if (!hdr) {
7758 nlmsg_free(msg);
7759 return;
7760 }
7761
7762 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7763 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7764 NLA_PUT(msg, NL80211_ATTR_FRAME, len, buf);
7765 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7766 if (ack)
7767 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7768
7769 genlmsg_end(msg, hdr);
7770
7771 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
7772 return;
7773
7774 nla_put_failure:
7775 genlmsg_cancel(msg, hdr);
7776 nlmsg_free(msg);
7777 }
7778
7779 void
7780 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
7781 struct net_device *netdev,
7782 enum nl80211_cqm_rssi_threshold_event rssi_event,
7783 gfp_t gfp)
7784 {
7785 struct sk_buff *msg;
7786 struct nlattr *pinfoattr;
7787 void *hdr;
7788
7789 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7790 if (!msg)
7791 return;
7792
7793 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7794 if (!hdr) {
7795 nlmsg_free(msg);
7796 return;
7797 }
7798
7799 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7800 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7801
7802 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7803 if (!pinfoattr)
7804 goto nla_put_failure;
7805
7806 NLA_PUT_U32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
7807 rssi_event);
7808
7809 nla_nest_end(msg, pinfoattr);
7810
7811 genlmsg_end(msg, hdr);
7812
7813 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7814 nl80211_mlme_mcgrp.id, gfp);
7815 return;
7816
7817 nla_put_failure:
7818 genlmsg_cancel(msg, hdr);
7819 nlmsg_free(msg);
7820 }
7821
7822 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
7823 struct net_device *netdev, const u8 *bssid,
7824 const u8 *replay_ctr, gfp_t gfp)
7825 {
7826 struct sk_buff *msg;
7827 struct nlattr *rekey_attr;
7828 void *hdr;
7829
7830 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7831 if (!msg)
7832 return;
7833
7834 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
7835 if (!hdr) {
7836 nlmsg_free(msg);
7837 return;
7838 }
7839
7840 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7841 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7842 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
7843
7844 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
7845 if (!rekey_attr)
7846 goto nla_put_failure;
7847
7848 NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR,
7849 NL80211_REPLAY_CTR_LEN, replay_ctr);
7850
7851 nla_nest_end(msg, rekey_attr);
7852
7853 genlmsg_end(msg, hdr);
7854
7855 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7856 nl80211_mlme_mcgrp.id, gfp);
7857 return;
7858
7859 nla_put_failure:
7860 genlmsg_cancel(msg, hdr);
7861 nlmsg_free(msg);
7862 }
7863
7864 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
7865 struct net_device *netdev, int index,
7866 const u8 *bssid, bool preauth, gfp_t gfp)
7867 {
7868 struct sk_buff *msg;
7869 struct nlattr *attr;
7870 void *hdr;
7871
7872 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7873 if (!msg)
7874 return;
7875
7876 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
7877 if (!hdr) {
7878 nlmsg_free(msg);
7879 return;
7880 }
7881
7882 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7883 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7884
7885 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
7886 if (!attr)
7887 goto nla_put_failure;
7888
7889 NLA_PUT_U32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index);
7890 NLA_PUT(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid);
7891 if (preauth)
7892 NLA_PUT_FLAG(msg, NL80211_PMKSA_CANDIDATE_PREAUTH);
7893
7894 nla_nest_end(msg, attr);
7895
7896 genlmsg_end(msg, hdr);
7897
7898 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7899 nl80211_mlme_mcgrp.id, gfp);
7900 return;
7901
7902 nla_put_failure:
7903 genlmsg_cancel(msg, hdr);
7904 nlmsg_free(msg);
7905 }
7906
7907 void
7908 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
7909 struct net_device *netdev, const u8 *peer,
7910 u32 num_packets, gfp_t gfp)
7911 {
7912 struct sk_buff *msg;
7913 struct nlattr *pinfoattr;
7914 void *hdr;
7915
7916 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7917 if (!msg)
7918 return;
7919
7920 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
7921 if (!hdr) {
7922 nlmsg_free(msg);
7923 return;
7924 }
7925
7926 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7927 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
7928 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
7929
7930 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
7931 if (!pinfoattr)
7932 goto nla_put_failure;
7933
7934 NLA_PUT_U32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets);
7935
7936 nla_nest_end(msg, pinfoattr);
7937
7938 genlmsg_end(msg, hdr);
7939
7940 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7941 nl80211_mlme_mcgrp.id, gfp);
7942 return;
7943
7944 nla_put_failure:
7945 genlmsg_cancel(msg, hdr);
7946 nlmsg_free(msg);
7947 }
7948
7949 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
7950 u64 cookie, bool acked, gfp_t gfp)
7951 {
7952 struct wireless_dev *wdev = dev->ieee80211_ptr;
7953 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
7954 struct sk_buff *msg;
7955 void *hdr;
7956 int err;
7957
7958 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7959 if (!msg)
7960 return;
7961
7962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
7963 if (!hdr) {
7964 nlmsg_free(msg);
7965 return;
7966 }
7967
7968 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
7969 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
7970 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7971 NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
7972 if (acked)
7973 NLA_PUT_FLAG(msg, NL80211_ATTR_ACK);
7974
7975 err = genlmsg_end(msg, hdr);
7976 if (err < 0) {
7977 nlmsg_free(msg);
7978 return;
7979 }
7980
7981 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7982 nl80211_mlme_mcgrp.id, gfp);
7983 return;
7984
7985 nla_put_failure:
7986 genlmsg_cancel(msg, hdr);
7987 nlmsg_free(msg);
7988 }
7989 EXPORT_SYMBOL(cfg80211_probe_status);
7990
7991 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
7992 const u8 *frame, size_t len,
7993 int freq, int sig_dbm, gfp_t gfp)
7994 {
7995 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
7996 struct sk_buff *msg;
7997 void *hdr;
7998 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
7999
8000 if (!nlpid)
8001 return;
8002
8003 msg = nlmsg_new(len + 100, gfp);
8004 if (!msg)
8005 return;
8006
8007 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8008 if (!hdr) {
8009 nlmsg_free(msg);
8010 return;
8011 }
8012
8013 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
8014 if (freq)
8015 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8016 if (sig_dbm)
8017 NLA_PUT_U32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm);
8018 NLA_PUT(msg, NL80211_ATTR_FRAME, len, frame);
8019
8020 genlmsg_end(msg, hdr);
8021
8022 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8023 return;
8024
8025 nla_put_failure:
8026 genlmsg_cancel(msg, hdr);
8027 nlmsg_free(msg);
8028 }
8029 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8030
8031 static int nl80211_netlink_notify(struct notifier_block * nb,
8032 unsigned long state,
8033 void *_notify)
8034 {
8035 struct netlink_notify *notify = _notify;
8036 struct cfg80211_registered_device *rdev;
8037 struct wireless_dev *wdev;
8038
8039 if (state != NETLINK_URELEASE)
8040 return NOTIFY_DONE;
8041
8042 rcu_read_lock();
8043
8044 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8045 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8046 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8047 if (rdev->ap_beacons_nlpid == notify->pid)
8048 rdev->ap_beacons_nlpid = 0;
8049 }
8050
8051 rcu_read_unlock();
8052
8053 return NOTIFY_DONE;
8054 }
8055
8056 static struct notifier_block nl80211_netlink_notifier = {
8057 .notifier_call = nl80211_netlink_notify,
8058 };
8059
8060 /* initialisation/exit functions */
8061
8062 int nl80211_init(void)
8063 {
8064 int err;
8065
8066 err = genl_register_family_with_ops(&nl80211_fam,
8067 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8068 if (err)
8069 return err;
8070
8071 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8072 if (err)
8073 goto err_out;
8074
8075 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8076 if (err)
8077 goto err_out;
8078
8079 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8080 if (err)
8081 goto err_out;
8082
8083 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8084 if (err)
8085 goto err_out;
8086
8087 #ifdef CONFIG_NL80211_TESTMODE
8088 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8089 if (err)
8090 goto err_out;
8091 #endif
8092
8093 err = netlink_register_notifier(&nl80211_netlink_notifier);
8094 if (err)
8095 goto err_out;
8096
8097 return 0;
8098 err_out:
8099 genl_unregister_family(&nl80211_fam);
8100 return err;
8101 }
8102
8103 void nl80211_exit(void)
8104 {
8105 netlink_unregister_notifier(&nl80211_netlink_notifier);
8106 genl_unregister_family(&nl80211_fam);
8107 }
Linux 2.6 libata-dev (mirror)