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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
26static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27static 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
32static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37
38static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE,
40 .name = "nl80211",
41 .hdrsize = 0,
42 .version = 1,
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47};
48
49
50static 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
74static 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] = { },
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};
208
209
210static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
211 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
212 [NL80211_KEY_IDX] = { .type = NLA_U8 },
213 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
214 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
215 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
216 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
217 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
218 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
219};
220
221
222static const struct nla_policy
223nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
224 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
225 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
226};
227
228
229static const struct nla_policy
230nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
231 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
232 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
233 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
234 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
235 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
236 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
237 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
238 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
239};
240
241
242static const struct nla_policy
243nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
244 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
245 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
246 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
247};
248
249static const struct nla_policy
250nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
251 [NL80211_ATTR_SCHED_SCAN_MATCH_SSID] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_SSID_LEN },
253};
254
255
256static int nl80211_get_ifidx(struct netlink_callback *cb)
257{
258 int res;
259
260 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
261 nl80211_fam.attrbuf, nl80211_fam.maxattr,
262 nl80211_policy);
263 if (res)
264 return res;
265
266 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
267 return -EINVAL;
268
269 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
270 if (!res)
271 return -EINVAL;
272 return res;
273}
274
275static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
276 struct netlink_callback *cb,
277 struct cfg80211_registered_device **rdev,
278 struct net_device **dev)
279{
280 int ifidx = cb->args[0];
281 int err;
282
283 if (!ifidx)
284 ifidx = nl80211_get_ifidx(cb);
285 if (ifidx < 0)
286 return ifidx;
287
288 cb->args[0] = ifidx;
289
290 rtnl_lock();
291
292 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
293 if (!*dev) {
294 err = -ENODEV;
295 goto out_rtnl;
296 }
297
298 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
299 if (IS_ERR(*rdev)) {
300 err = PTR_ERR(*rdev);
301 goto out_rtnl;
302 }
303
304 return 0;
305 out_rtnl:
306 rtnl_unlock();
307 return err;
308}
309
310static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
311{
312 cfg80211_unlock_rdev(rdev);
313 rtnl_unlock();
314}
315
316
317static bool is_valid_ie_attr(const struct nlattr *attr)
318{
319 const u8 *pos;
320 int len;
321
322 if (!attr)
323 return true;
324
325 pos = nla_data(attr);
326 len = nla_len(attr);
327
328 while (len) {
329 u8 elemlen;
330
331 if (len < 2)
332 return false;
333 len -= 2;
334
335 elemlen = pos[1];
336 if (elemlen > len)
337 return false;
338
339 len -= elemlen;
340 pos += 2 + elemlen;
341 }
342
343 return true;
344}
345
346
347static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
348 int flags, u8 cmd)
349{
350
351 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
352}
353
354static int nl80211_msg_put_channel(struct sk_buff *msg,
355 struct ieee80211_channel *chan)
356{
357 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ,
358 chan->center_freq);
359
360 if (chan->flags & IEEE80211_CHAN_DISABLED)
361 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED);
362 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
363 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN);
364 if (chan->flags & IEEE80211_CHAN_NO_IBSS)
365 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS);
366 if (chan->flags & IEEE80211_CHAN_RADAR)
367 NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
368
369 NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
370 DBM_TO_MBM(chan->max_power));
371
372 return 0;
373
374 nla_put_failure:
375 return -ENOBUFS;
376}
377
378
379
380struct key_parse {
381 struct key_params p;
382 int idx;
383 int type;
384 bool def, defmgmt;
385 bool def_uni, def_multi;
386};
387
388static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
389{
390 struct nlattr *tb[NL80211_KEY_MAX + 1];
391 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
392 nl80211_key_policy);
393 if (err)
394 return err;
395
396 k->def = !!tb[NL80211_KEY_DEFAULT];
397 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
398
399 if (k->def) {
400 k->def_uni = true;
401 k->def_multi = true;
402 }
403 if (k->defmgmt)
404 k->def_multi = true;
405
406 if (tb[NL80211_KEY_IDX])
407 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
408
409 if (tb[NL80211_KEY_DATA]) {
410 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
411 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
412 }
413
414 if (tb[NL80211_KEY_SEQ]) {
415 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
416 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
417 }
418
419 if (tb[NL80211_KEY_CIPHER])
420 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
421
422 if (tb[NL80211_KEY_TYPE]) {
423 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
424 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
425 return -EINVAL;
426 }
427
428 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
429 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
430 int err = nla_parse_nested(kdt,
431 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
432 tb[NL80211_KEY_DEFAULT_TYPES],
433 nl80211_key_default_policy);
434 if (err)
435 return err;
436
437 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
438 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
439 }
440
441 return 0;
442}
443
444static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
445{
446 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
447 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
448 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
449 }
450
451 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
452 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
453 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
454 }
455
456 if (info->attrs[NL80211_ATTR_KEY_IDX])
457 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
458
459 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
460 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
461
462 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
463 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
464
465 if (k->def) {
466 k->def_uni = true;
467 k->def_multi = true;
468 }
469 if (k->defmgmt)
470 k->def_multi = true;
471
472 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
473 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
474 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
475 return -EINVAL;
476 }
477
478 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
479 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
480 int err = nla_parse_nested(
481 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
482 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
483 nl80211_key_default_policy);
484 if (err)
485 return err;
486
487 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
488 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
489 }
490
491 return 0;
492}
493
494static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
495{
496 int err;
497
498 memset(k, 0, sizeof(*k));
499 k->idx = -1;
500 k->type = -1;
501
502 if (info->attrs[NL80211_ATTR_KEY])
503 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
504 else
505 err = nl80211_parse_key_old(info, k);
506
507 if (err)
508 return err;
509
510 if (k->def && k->defmgmt)
511 return -EINVAL;
512
513 if (k->defmgmt) {
514 if (k->def_uni || !k->def_multi)
515 return -EINVAL;
516 }
517
518 if (k->idx != -1) {
519 if (k->defmgmt) {
520 if (k->idx < 4 || k->idx > 5)
521 return -EINVAL;
522 } else if (k->def) {
523 if (k->idx < 0 || k->idx > 3)
524 return -EINVAL;
525 } else {
526 if (k->idx < 0 || k->idx > 5)
527 return -EINVAL;
528 }
529 }
530
531 return 0;
532}
533
534static struct cfg80211_cached_keys *
535nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
536 struct nlattr *keys)
537{
538 struct key_parse parse;
539 struct nlattr *key;
540 struct cfg80211_cached_keys *result;
541 int rem, err, def = 0;
542
543 result = kzalloc(sizeof(*result), GFP_KERNEL);
544 if (!result)
545 return ERR_PTR(-ENOMEM);
546
547 result->def = -1;
548 result->defmgmt = -1;
549
550 nla_for_each_nested(key, keys, rem) {
551 memset(&parse, 0, sizeof(parse));
552 parse.idx = -1;
553
554 err = nl80211_parse_key_new(key, &parse);
555 if (err)
556 goto error;
557 err = -EINVAL;
558 if (!parse.p.key)
559 goto error;
560 if (parse.idx < 0 || parse.idx > 4)
561 goto error;
562 if (parse.def) {
563 if (def)
564 goto error;
565 def = 1;
566 result->def = parse.idx;
567 if (!parse.def_uni || !parse.def_multi)
568 goto error;
569 } else if (parse.defmgmt)
570 goto error;
571 err = cfg80211_validate_key_settings(rdev, &parse.p,
572 parse.idx, false, NULL);
573 if (err)
574 goto error;
575 result->params[parse.idx].cipher = parse.p.cipher;
576 result->params[parse.idx].key_len = parse.p.key_len;
577 result->params[parse.idx].key = result->data[parse.idx];
578 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
579 }
580
581 return result;
582 error:
583 kfree(result);
584 return ERR_PTR(err);
585}
586
587static int nl80211_key_allowed(struct wireless_dev *wdev)
588{
589 ASSERT_WDEV_LOCK(wdev);
590
591 switch (wdev->iftype) {
592 case NL80211_IFTYPE_AP:
593 case NL80211_IFTYPE_AP_VLAN:
594 case NL80211_IFTYPE_P2P_GO:
595 case NL80211_IFTYPE_MESH_POINT:
596 break;
597 case NL80211_IFTYPE_ADHOC:
598 if (!wdev->current_bss)
599 return -ENOLINK;
600 break;
601 case NL80211_IFTYPE_STATION:
602 case NL80211_IFTYPE_P2P_CLIENT:
603 if (wdev->sme_state != CFG80211_SME_CONNECTED)
604 return -ENOLINK;
605 break;
606 default:
607 return -EINVAL;
608 }
609
610 return 0;
611}
612
613static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
614{
615 struct nlattr *nl_modes = nla_nest_start(msg, attr);
616 int i;
617
618 if (!nl_modes)
619 goto nla_put_failure;
620
621 i = 0;
622 while (ifmodes) {
623 if (ifmodes & 1)
624 NLA_PUT_FLAG(msg, i);
625 ifmodes >>= 1;
626 i++;
627 }
628
629 nla_nest_end(msg, nl_modes);
630 return 0;
631
632nla_put_failure:
633 return -ENOBUFS;
634}
635
636static int nl80211_put_iface_combinations(struct wiphy *wiphy,
637 struct sk_buff *msg)
638{
639 struct nlattr *nl_combis;
640 int i, j;
641
642 nl_combis = nla_nest_start(msg,
643 NL80211_ATTR_INTERFACE_COMBINATIONS);
644 if (!nl_combis)
645 goto nla_put_failure;
646
647 for (i = 0; i < wiphy->n_iface_combinations; i++) {
648 const struct ieee80211_iface_combination *c;
649 struct nlattr *nl_combi, *nl_limits;
650
651 c = &wiphy->iface_combinations[i];
652
653 nl_combi = nla_nest_start(msg, i + 1);
654 if (!nl_combi)
655 goto nla_put_failure;
656
657 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
658 if (!nl_limits)
659 goto nla_put_failure;
660
661 for (j = 0; j < c->n_limits; j++) {
662 struct nlattr *nl_limit;
663
664 nl_limit = nla_nest_start(msg, j + 1);
665 if (!nl_limit)
666 goto nla_put_failure;
667 NLA_PUT_U32(msg, NL80211_IFACE_LIMIT_MAX,
668 c->limits[j].max);
669 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
670 c->limits[j].types))
671 goto nla_put_failure;
672 nla_nest_end(msg, nl_limit);
673 }
674
675 nla_nest_end(msg, nl_limits);
676
677 if (c->beacon_int_infra_match)
678 NLA_PUT_FLAG(msg,
679 NL80211_IFACE_COMB_STA_AP_BI_MATCH);
680 NLA_PUT_U32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
681 c->num_different_channels);
682 NLA_PUT_U32(msg, NL80211_IFACE_COMB_MAXNUM,
683 c->max_interfaces);
684
685 nla_nest_end(msg, nl_combi);
686 }
687
688 nla_nest_end(msg, nl_combis);
689
690 return 0;
691nla_put_failure:
692 return -ENOBUFS;
693}
694
695static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
696 struct cfg80211_registered_device *dev)
697{
698 void *hdr;
699 struct nlattr *nl_bands, *nl_band;
700 struct nlattr *nl_freqs, *nl_freq;
701 struct nlattr *nl_rates, *nl_rate;
702 struct nlattr *nl_cmds;
703 enum ieee80211_band band;
704 struct ieee80211_channel *chan;
705 struct ieee80211_rate *rate;
706 int i;
707 const struct ieee80211_txrx_stypes *mgmt_stypes =
708 dev->wiphy.mgmt_stypes;
709
710 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
711 if (!hdr)
712 return -1;
713
714 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx);
715 NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy));
716
717 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
718 cfg80211_rdev_list_generation);
719
720 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
721 dev->wiphy.retry_short);
722 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
723 dev->wiphy.retry_long);
724 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
725 dev->wiphy.frag_threshold);
726 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
727 dev->wiphy.rts_threshold);
728 NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
729 dev->wiphy.coverage_class);
730 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
731 dev->wiphy.max_scan_ssids);
732 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
733 dev->wiphy.max_sched_scan_ssids);
734 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
735 dev->wiphy.max_scan_ie_len);
736 NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
737 dev->wiphy.max_sched_scan_ie_len);
738 NLA_PUT_U8(msg, NL80211_ATTR_MAX_MATCH_SETS,
739 dev->wiphy.max_match_sets);
740
741 if (dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)
742 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_IBSS_RSN);
743 if (dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH)
744 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_MESH_AUTH);
745 if (dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD)
746 NLA_PUT_FLAG(msg, NL80211_ATTR_SUPPORT_AP_UAPSD);
747 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)
748 NLA_PUT_FLAG(msg, NL80211_ATTR_ROAM_SUPPORT);
749 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)
750 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_SUPPORT);
751 if (dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)
752 NLA_PUT_FLAG(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP);
753
754 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
755 sizeof(u32) * dev->wiphy.n_cipher_suites,
756 dev->wiphy.cipher_suites);
757
758 NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
759 dev->wiphy.max_num_pmkids);
760
761 if (dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL)
762 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE);
763
764 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
765 dev->wiphy.available_antennas_tx);
766 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
767 dev->wiphy.available_antennas_rx);
768
769 if (dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD)
770 NLA_PUT_U32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
771 dev->wiphy.probe_resp_offload);
772
773 if ((dev->wiphy.available_antennas_tx ||
774 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
775 u32 tx_ant = 0, rx_ant = 0;
776 int res;
777 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
778 if (!res) {
779 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX, tx_ant);
780 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX, rx_ant);
781 }
782 }
783
784 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
785 dev->wiphy.interface_modes))
786 goto nla_put_failure;
787
788 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
789 if (!nl_bands)
790 goto nla_put_failure;
791
792 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
793 if (!dev->wiphy.bands[band])
794 continue;
795
796 nl_band = nla_nest_start(msg, band);
797 if (!nl_band)
798 goto nla_put_failure;
799
800
801 if (dev->wiphy.bands[band]->ht_cap.ht_supported) {
802 NLA_PUT(msg, NL80211_BAND_ATTR_HT_MCS_SET,
803 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
804 &dev->wiphy.bands[band]->ht_cap.mcs);
805 NLA_PUT_U16(msg, NL80211_BAND_ATTR_HT_CAPA,
806 dev->wiphy.bands[band]->ht_cap.cap);
807 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
808 dev->wiphy.bands[band]->ht_cap.ampdu_factor);
809 NLA_PUT_U8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
810 dev->wiphy.bands[band]->ht_cap.ampdu_density);
811 }
812
813
814 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
815 if (!nl_freqs)
816 goto nla_put_failure;
817
818 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
819 nl_freq = nla_nest_start(msg, i);
820 if (!nl_freq)
821 goto nla_put_failure;
822
823 chan = &dev->wiphy.bands[band]->channels[i];
824
825 if (nl80211_msg_put_channel(msg, chan))
826 goto nla_put_failure;
827
828 nla_nest_end(msg, nl_freq);
829 }
830
831 nla_nest_end(msg, nl_freqs);
832
833
834 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
835 if (!nl_rates)
836 goto nla_put_failure;
837
838 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
839 nl_rate = nla_nest_start(msg, i);
840 if (!nl_rate)
841 goto nla_put_failure;
842
843 rate = &dev->wiphy.bands[band]->bitrates[i];
844 NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE,
845 rate->bitrate);
846 if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE)
847 NLA_PUT_FLAG(msg,
848 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE);
849
850 nla_nest_end(msg, nl_rate);
851 }
852
853 nla_nest_end(msg, nl_rates);
854
855 nla_nest_end(msg, nl_band);
856 }
857 nla_nest_end(msg, nl_bands);
858
859 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
860 if (!nl_cmds)
861 goto nla_put_failure;
862
863 i = 0;
864#define CMD(op, n) \
865 do { \
866 if (dev->ops->op) { \
867 i++; \
868 NLA_PUT_U32(msg, i, NL80211_CMD_ ## n); \
869 } \
870 } while (0)
871
872 CMD(add_virtual_intf, NEW_INTERFACE);
873 CMD(change_virtual_intf, SET_INTERFACE);
874 CMD(add_key, NEW_KEY);
875 CMD(add_beacon, NEW_BEACON);
876 CMD(add_station, NEW_STATION);
877 CMD(add_mpath, NEW_MPATH);
878 CMD(update_mesh_config, SET_MESH_CONFIG);
879 CMD(change_bss, SET_BSS);
880 CMD(auth, AUTHENTICATE);
881 CMD(assoc, ASSOCIATE);
882 CMD(deauth, DEAUTHENTICATE);
883 CMD(disassoc, DISASSOCIATE);
884 CMD(join_ibss, JOIN_IBSS);
885 CMD(join_mesh, JOIN_MESH);
886 CMD(set_pmksa, SET_PMKSA);
887 CMD(del_pmksa, DEL_PMKSA);
888 CMD(flush_pmksa, FLUSH_PMKSA);
889 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
890 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
891 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
892 CMD(mgmt_tx, FRAME);
893 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
894 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
895 i++;
896 NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
897 }
898 CMD(set_channel, SET_CHANNEL);
899 CMD(set_wds_peer, SET_WDS_PEER);
900 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
901 CMD(tdls_mgmt, TDLS_MGMT);
902 CMD(tdls_oper, TDLS_OPER);
903 }
904 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
905 CMD(sched_scan_start, START_SCHED_SCAN);
906 CMD(probe_client, PROBE_CLIENT);
907 CMD(set_noack_map, SET_NOACK_MAP);
908 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
909 i++;
910 NLA_PUT_U32(msg, i, NL80211_CMD_REGISTER_BEACONS);
911 }
912
913#ifdef CONFIG_NL80211_TESTMODE
914 CMD(testmode_cmd, TESTMODE);
915#endif
916
917#undef CMD
918
919 if (dev->ops->connect || dev->ops->auth) {
920 i++;
921 NLA_PUT_U32(msg, i, NL80211_CMD_CONNECT);
922 }
923
924 if (dev->ops->disconnect || dev->ops->deauth) {
925 i++;
926 NLA_PUT_U32(msg, i, NL80211_CMD_DISCONNECT);
927 }
928
929 nla_nest_end(msg, nl_cmds);
930
931 if (dev->ops->remain_on_channel &&
932 dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
933 NLA_PUT_U32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
934 dev->wiphy.max_remain_on_channel_duration);
935
936 if (dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)
937 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
938
939 if (mgmt_stypes) {
940 u16 stypes;
941 struct nlattr *nl_ftypes, *nl_ifs;
942 enum nl80211_iftype ift;
943
944 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
945 if (!nl_ifs)
946 goto nla_put_failure;
947
948 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
949 nl_ftypes = nla_nest_start(msg, ift);
950 if (!nl_ftypes)
951 goto nla_put_failure;
952 i = 0;
953 stypes = mgmt_stypes[ift].tx;
954 while (stypes) {
955 if (stypes & 1)
956 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
957 (i << 4) | IEEE80211_FTYPE_MGMT);
958 stypes >>= 1;
959 i++;
960 }
961 nla_nest_end(msg, nl_ftypes);
962 }
963
964 nla_nest_end(msg, nl_ifs);
965
966 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
967 if (!nl_ifs)
968 goto nla_put_failure;
969
970 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
971 nl_ftypes = nla_nest_start(msg, ift);
972 if (!nl_ftypes)
973 goto nla_put_failure;
974 i = 0;
975 stypes = mgmt_stypes[ift].rx;
976 while (stypes) {
977 if (stypes & 1)
978 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE,
979 (i << 4) | IEEE80211_FTYPE_MGMT);
980 stypes >>= 1;
981 i++;
982 }
983 nla_nest_end(msg, nl_ftypes);
984 }
985 nla_nest_end(msg, nl_ifs);
986 }
987
988 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
989 struct nlattr *nl_wowlan;
990
991 nl_wowlan = nla_nest_start(msg,
992 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
993 if (!nl_wowlan)
994 goto nla_put_failure;
995
996 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY)
997 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_ANY);
998 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT)
999 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_DISCONNECT);
1000 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT)
1001 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT);
1002 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)
1003 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED);
1004 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)
1005 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE);
1006 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)
1007 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST);
1008 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)
1009 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE);
1010 if (dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE)
1011 NLA_PUT_FLAG(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE);
1012 if (dev->wiphy.wowlan.n_patterns) {
1013 struct nl80211_wowlan_pattern_support pat = {
1014 .max_patterns = dev->wiphy.wowlan.n_patterns,
1015 .min_pattern_len =
1016 dev->wiphy.wowlan.pattern_min_len,
1017 .max_pattern_len =
1018 dev->wiphy.wowlan.pattern_max_len,
1019 };
1020 NLA_PUT(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1021 sizeof(pat), &pat);
1022 }
1023
1024 nla_nest_end(msg, nl_wowlan);
1025 }
1026
1027 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1028 dev->wiphy.software_iftypes))
1029 goto nla_put_failure;
1030
1031 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1032 goto nla_put_failure;
1033
1034 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME)
1035 NLA_PUT_U32(msg, NL80211_ATTR_DEVICE_AP_SME,
1036 dev->wiphy.ap_sme_capa);
1037
1038 NLA_PUT_U32(msg, NL80211_ATTR_FEATURE_FLAGS, dev->wiphy.features);
1039
1040 if (dev->wiphy.ht_capa_mod_mask)
1041 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1042 sizeof(*dev->wiphy.ht_capa_mod_mask),
1043 dev->wiphy.ht_capa_mod_mask);
1044
1045 return genlmsg_end(msg, hdr);
1046
1047 nla_put_failure:
1048 genlmsg_cancel(msg, hdr);
1049 return -EMSGSIZE;
1050}
1051
1052static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1053{
1054 int idx = 0;
1055 int start = cb->args[0];
1056 struct cfg80211_registered_device *dev;
1057
1058 mutex_lock(&cfg80211_mutex);
1059 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1060 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1061 continue;
1062 if (++idx <= start)
1063 continue;
1064 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1065 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1066 dev) < 0) {
1067 idx--;
1068 break;
1069 }
1070 }
1071 mutex_unlock(&cfg80211_mutex);
1072
1073 cb->args[0] = idx;
1074
1075 return skb->len;
1076}
1077
1078static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1079{
1080 struct sk_buff *msg;
1081 struct cfg80211_registered_device *dev = info->user_ptr[0];
1082
1083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1084 if (!msg)
1085 return -ENOMEM;
1086
1087 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1088 nlmsg_free(msg);
1089 return -ENOBUFS;
1090 }
1091
1092 return genlmsg_reply(msg, info);
1093}
1094
1095static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1096 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1097 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1098 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1099 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1100 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1101};
1102
1103static int parse_txq_params(struct nlattr *tb[],
1104 struct ieee80211_txq_params *txq_params)
1105{
1106 if (!tb[NL80211_TXQ_ATTR_QUEUE] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1107 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1108 !tb[NL80211_TXQ_ATTR_AIFS])
1109 return -EINVAL;
1110
1111 txq_params->queue = nla_get_u8(tb[NL80211_TXQ_ATTR_QUEUE]);
1112 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1113 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1114 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1115 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1116
1117 return 0;
1118}
1119
1120static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1121{
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132 return !wdev ||
1133 wdev->iftype == NL80211_IFTYPE_AP ||
1134 wdev->iftype == NL80211_IFTYPE_WDS ||
1135 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1136 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1137 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1138}
1139
1140static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1141 struct wireless_dev *wdev,
1142 struct genl_info *info)
1143{
1144 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1145 u32 freq;
1146 int result;
1147
1148 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1149 return -EINVAL;
1150
1151 if (!nl80211_can_set_dev_channel(wdev))
1152 return -EOPNOTSUPP;
1153
1154 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1155 channel_type = nla_get_u32(info->attrs[
1156 NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1157 if (channel_type != NL80211_CHAN_NO_HT &&
1158 channel_type != NL80211_CHAN_HT20 &&
1159 channel_type != NL80211_CHAN_HT40PLUS &&
1160 channel_type != NL80211_CHAN_HT40MINUS)
1161 return -EINVAL;
1162 }
1163
1164 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1165
1166 mutex_lock(&rdev->devlist_mtx);
1167 if (wdev) {
1168 wdev_lock(wdev);
1169 result = cfg80211_set_freq(rdev, wdev, freq, channel_type);
1170 wdev_unlock(wdev);
1171 } else {
1172 result = cfg80211_set_freq(rdev, NULL, freq, channel_type);
1173 }
1174 mutex_unlock(&rdev->devlist_mtx);
1175
1176 return result;
1177}
1178
1179static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1180{
1181 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1182 struct net_device *netdev = info->user_ptr[1];
1183
1184 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1185}
1186
1187static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1188{
1189 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1190 struct net_device *dev = info->user_ptr[1];
1191 struct wireless_dev *wdev = dev->ieee80211_ptr;
1192 const u8 *bssid;
1193
1194 if (!info->attrs[NL80211_ATTR_MAC])
1195 return -EINVAL;
1196
1197 if (netif_running(dev))
1198 return -EBUSY;
1199
1200 if (!rdev->ops->set_wds_peer)
1201 return -EOPNOTSUPP;
1202
1203 if (wdev->iftype != NL80211_IFTYPE_WDS)
1204 return -EOPNOTSUPP;
1205
1206 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1207 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1208}
1209
1210
1211static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1212{
1213 struct cfg80211_registered_device *rdev;
1214 struct net_device *netdev = NULL;
1215 struct wireless_dev *wdev;
1216 int result = 0, rem_txq_params = 0;
1217 struct nlattr *nl_txq_params;
1218 u32 changed;
1219 u8 retry_short = 0, retry_long = 0;
1220 u32 frag_threshold = 0, rts_threshold = 0;
1221 u8 coverage_class = 0;
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232 mutex_lock(&cfg80211_mutex);
1233
1234 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1235 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1236
1237 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1238 if (netdev && netdev->ieee80211_ptr) {
1239 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1240 mutex_lock(&rdev->mtx);
1241 } else
1242 netdev = NULL;
1243 }
1244
1245 if (!netdev) {
1246 rdev = __cfg80211_rdev_from_info(info);
1247 if (IS_ERR(rdev)) {
1248 mutex_unlock(&cfg80211_mutex);
1249 return PTR_ERR(rdev);
1250 }
1251 wdev = NULL;
1252 netdev = NULL;
1253 result = 0;
1254
1255 mutex_lock(&rdev->mtx);
1256 } else if (netif_running(netdev) &&
1257 nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1258 wdev = netdev->ieee80211_ptr;
1259 else
1260 wdev = NULL;
1261
1262
1263
1264
1265
1266
1267 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1268 result = cfg80211_dev_rename(
1269 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1270
1271 mutex_unlock(&cfg80211_mutex);
1272
1273 if (result)
1274 goto bad_res;
1275
1276 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1277 struct ieee80211_txq_params txq_params;
1278 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1279
1280 if (!rdev->ops->set_txq_params) {
1281 result = -EOPNOTSUPP;
1282 goto bad_res;
1283 }
1284
1285 if (!netdev) {
1286 result = -EINVAL;
1287 goto bad_res;
1288 }
1289
1290 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1291 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1292 result = -EINVAL;
1293 goto bad_res;
1294 }
1295
1296 nla_for_each_nested(nl_txq_params,
1297 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1298 rem_txq_params) {
1299 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1300 nla_data(nl_txq_params),
1301 nla_len(nl_txq_params),
1302 txq_params_policy);
1303 result = parse_txq_params(tb, &txq_params);
1304 if (result)
1305 goto bad_res;
1306
1307 result = rdev->ops->set_txq_params(&rdev->wiphy,
1308 netdev,
1309 &txq_params);
1310 if (result)
1311 goto bad_res;
1312 }
1313 }
1314
1315 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1316 result = __nl80211_set_channel(rdev, wdev, info);
1317 if (result)
1318 goto bad_res;
1319 }
1320
1321 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1322 enum nl80211_tx_power_setting type;
1323 int idx, mbm = 0;
1324
1325 if (!rdev->ops->set_tx_power) {
1326 result = -EOPNOTSUPP;
1327 goto bad_res;
1328 }
1329
1330 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1331 type = nla_get_u32(info->attrs[idx]);
1332
1333 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1334 (type != NL80211_TX_POWER_AUTOMATIC)) {
1335 result = -EINVAL;
1336 goto bad_res;
1337 }
1338
1339 if (type != NL80211_TX_POWER_AUTOMATIC) {
1340 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1341 mbm = nla_get_u32(info->attrs[idx]);
1342 }
1343
1344 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1345 if (result)
1346 goto bad_res;
1347 }
1348
1349 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1350 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1351 u32 tx_ant, rx_ant;
1352 if ((!rdev->wiphy.available_antennas_tx &&
1353 !rdev->wiphy.available_antennas_rx) ||
1354 !rdev->ops->set_antenna) {
1355 result = -EOPNOTSUPP;
1356 goto bad_res;
1357 }
1358
1359 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1360 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1361
1362
1363
1364 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1365 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1366 result = -EINVAL;
1367 goto bad_res;
1368 }
1369
1370 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1371 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1372
1373 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1374 if (result)
1375 goto bad_res;
1376 }
1377
1378 changed = 0;
1379
1380 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1381 retry_short = nla_get_u8(
1382 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1383 if (retry_short == 0) {
1384 result = -EINVAL;
1385 goto bad_res;
1386 }
1387 changed |= WIPHY_PARAM_RETRY_SHORT;
1388 }
1389
1390 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1391 retry_long = nla_get_u8(
1392 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1393 if (retry_long == 0) {
1394 result = -EINVAL;
1395 goto bad_res;
1396 }
1397 changed |= WIPHY_PARAM_RETRY_LONG;
1398 }
1399
1400 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1401 frag_threshold = nla_get_u32(
1402 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1403 if (frag_threshold < 256) {
1404 result = -EINVAL;
1405 goto bad_res;
1406 }
1407 if (frag_threshold != (u32) -1) {
1408
1409
1410
1411
1412
1413
1414 frag_threshold &= ~0x1;
1415 }
1416 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1417 }
1418
1419 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1420 rts_threshold = nla_get_u32(
1421 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1422 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1423 }
1424
1425 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1426 coverage_class = nla_get_u8(
1427 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1428 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1429 }
1430
1431 if (changed) {
1432 u8 old_retry_short, old_retry_long;
1433 u32 old_frag_threshold, old_rts_threshold;
1434 u8 old_coverage_class;
1435
1436 if (!rdev->ops->set_wiphy_params) {
1437 result = -EOPNOTSUPP;
1438 goto bad_res;
1439 }
1440
1441 old_retry_short = rdev->wiphy.retry_short;
1442 old_retry_long = rdev->wiphy.retry_long;
1443 old_frag_threshold = rdev->wiphy.frag_threshold;
1444 old_rts_threshold = rdev->wiphy.rts_threshold;
1445 old_coverage_class = rdev->wiphy.coverage_class;
1446
1447 if (changed & WIPHY_PARAM_RETRY_SHORT)
1448 rdev->wiphy.retry_short = retry_short;
1449 if (changed & WIPHY_PARAM_RETRY_LONG)
1450 rdev->wiphy.retry_long = retry_long;
1451 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1452 rdev->wiphy.frag_threshold = frag_threshold;
1453 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1454 rdev->wiphy.rts_threshold = rts_threshold;
1455 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1456 rdev->wiphy.coverage_class = coverage_class;
1457
1458 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1459 if (result) {
1460 rdev->wiphy.retry_short = old_retry_short;
1461 rdev->wiphy.retry_long = old_retry_long;
1462 rdev->wiphy.frag_threshold = old_frag_threshold;
1463 rdev->wiphy.rts_threshold = old_rts_threshold;
1464 rdev->wiphy.coverage_class = old_coverage_class;
1465 }
1466 }
1467
1468 bad_res:
1469 mutex_unlock(&rdev->mtx);
1470 if (netdev)
1471 dev_put(netdev);
1472 return result;
1473}
1474
1475
1476static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1477 struct cfg80211_registered_device *rdev,
1478 struct net_device *dev)
1479{
1480 void *hdr;
1481
1482 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1483 if (!hdr)
1484 return -1;
1485
1486 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1487 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
1488 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name);
1489 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, dev->ieee80211_ptr->iftype);
1490
1491 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION,
1492 rdev->devlist_generation ^
1493 (cfg80211_rdev_list_generation << 2));
1494
1495 return genlmsg_end(msg, hdr);
1496
1497 nla_put_failure:
1498 genlmsg_cancel(msg, hdr);
1499 return -EMSGSIZE;
1500}
1501
1502static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1503{
1504 int wp_idx = 0;
1505 int if_idx = 0;
1506 int wp_start = cb->args[0];
1507 int if_start = cb->args[1];
1508 struct cfg80211_registered_device *rdev;
1509 struct wireless_dev *wdev;
1510
1511 mutex_lock(&cfg80211_mutex);
1512 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1513 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1514 continue;
1515 if (wp_idx < wp_start) {
1516 wp_idx++;
1517 continue;
1518 }
1519 if_idx = 0;
1520
1521 mutex_lock(&rdev->devlist_mtx);
1522 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1523 if (if_idx < if_start) {
1524 if_idx++;
1525 continue;
1526 }
1527 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1528 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1529 rdev, wdev->netdev) < 0) {
1530 mutex_unlock(&rdev->devlist_mtx);
1531 goto out;
1532 }
1533 if_idx++;
1534 }
1535 mutex_unlock(&rdev->devlist_mtx);
1536
1537 wp_idx++;
1538 }
1539 out:
1540 mutex_unlock(&cfg80211_mutex);
1541
1542 cb->args[0] = wp_idx;
1543 cb->args[1] = if_idx;
1544
1545 return skb->len;
1546}
1547
1548static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1549{
1550 struct sk_buff *msg;
1551 struct cfg80211_registered_device *dev = info->user_ptr[0];
1552 struct net_device *netdev = info->user_ptr[1];
1553
1554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1555 if (!msg)
1556 return -ENOMEM;
1557
1558 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1559 dev, netdev) < 0) {
1560 nlmsg_free(msg);
1561 return -ENOBUFS;
1562 }
1563
1564 return genlmsg_reply(msg, info);
1565}
1566
1567static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1568 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1569 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1570 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1571 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1572 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1573};
1574
1575static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1576{
1577 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1578 int flag;
1579
1580 *mntrflags = 0;
1581
1582 if (!nla)
1583 return -EINVAL;
1584
1585 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1586 nla, mntr_flags_policy))
1587 return -EINVAL;
1588
1589 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1590 if (flags[flag])
1591 *mntrflags |= (1<<flag);
1592
1593 return 0;
1594}
1595
1596static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1597 struct net_device *netdev, u8 use_4addr,
1598 enum nl80211_iftype iftype)
1599{
1600 if (!use_4addr) {
1601 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1602 return -EBUSY;
1603 return 0;
1604 }
1605
1606 switch (iftype) {
1607 case NL80211_IFTYPE_AP_VLAN:
1608 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1609 return 0;
1610 break;
1611 case NL80211_IFTYPE_STATION:
1612 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1613 return 0;
1614 break;
1615 default:
1616 break;
1617 }
1618
1619 return -EOPNOTSUPP;
1620}
1621
1622static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1623{
1624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1625 struct vif_params params;
1626 int err;
1627 enum nl80211_iftype otype, ntype;
1628 struct net_device *dev = info->user_ptr[1];
1629 u32 _flags, *flags = NULL;
1630 bool change = false;
1631
1632 memset(¶ms, 0, sizeof(params));
1633
1634 otype = ntype = dev->ieee80211_ptr->iftype;
1635
1636 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1637 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1638 if (otype != ntype)
1639 change = true;
1640 if (ntype > NL80211_IFTYPE_MAX)
1641 return -EINVAL;
1642 }
1643
1644 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1645 struct wireless_dev *wdev = dev->ieee80211_ptr;
1646
1647 if (ntype != NL80211_IFTYPE_MESH_POINT)
1648 return -EINVAL;
1649 if (netif_running(dev))
1650 return -EBUSY;
1651
1652 wdev_lock(wdev);
1653 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1654 IEEE80211_MAX_MESH_ID_LEN);
1655 wdev->mesh_id_up_len =
1656 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1657 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1658 wdev->mesh_id_up_len);
1659 wdev_unlock(wdev);
1660 }
1661
1662 if (info->attrs[NL80211_ATTR_4ADDR]) {
1663 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1664 change = true;
1665 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1666 if (err)
1667 return err;
1668 } else {
1669 params.use_4addr = -1;
1670 }
1671
1672 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1673 if (ntype != NL80211_IFTYPE_MONITOR)
1674 return -EINVAL;
1675 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1676 &_flags);
1677 if (err)
1678 return err;
1679
1680 flags = &_flags;
1681 change = true;
1682 }
1683
1684 if (change)
1685 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms);
1686 else
1687 err = 0;
1688
1689 if (!err && params.use_4addr != -1)
1690 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1691
1692 return err;
1693}
1694
1695static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1696{
1697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1698 struct vif_params params;
1699 struct net_device *dev;
1700 int err;
1701 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1702 u32 flags;
1703
1704 memset(¶ms, 0, sizeof(params));
1705
1706 if (!info->attrs[NL80211_ATTR_IFNAME])
1707 return -EINVAL;
1708
1709 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1710 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1711 if (type > NL80211_IFTYPE_MAX)
1712 return -EINVAL;
1713 }
1714
1715 if (!rdev->ops->add_virtual_intf ||
1716 !(rdev->wiphy.interface_modes & (1 << type)))
1717 return -EOPNOTSUPP;
1718
1719 if (info->attrs[NL80211_ATTR_4ADDR]) {
1720 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1721 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1722 if (err)
1723 return err;
1724 }
1725
1726 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1727 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1728 &flags);
1729 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1730 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1731 type, err ? NULL : &flags, ¶ms);
1732 if (IS_ERR(dev))
1733 return PTR_ERR(dev);
1734
1735 if (type == NL80211_IFTYPE_MESH_POINT &&
1736 info->attrs[NL80211_ATTR_MESH_ID]) {
1737 struct wireless_dev *wdev = dev->ieee80211_ptr;
1738
1739 wdev_lock(wdev);
1740 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1741 IEEE80211_MAX_MESH_ID_LEN);
1742 wdev->mesh_id_up_len =
1743 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1744 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1745 wdev->mesh_id_up_len);
1746 wdev_unlock(wdev);
1747 }
1748
1749 return 0;
1750}
1751
1752static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1753{
1754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1755 struct net_device *dev = info->user_ptr[1];
1756
1757 if (!rdev->ops->del_virtual_intf)
1758 return -EOPNOTSUPP;
1759
1760 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1761}
1762
1763static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1764{
1765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1766 struct net_device *dev = info->user_ptr[1];
1767 u16 noack_map;
1768
1769 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1770 return -EINVAL;
1771
1772 if (!rdev->ops->set_noack_map)
1773 return -EOPNOTSUPP;
1774
1775 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1776
1777 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1778}
1779
1780struct get_key_cookie {
1781 struct sk_buff *msg;
1782 int error;
1783 int idx;
1784};
1785
1786static void get_key_callback(void *c, struct key_params *params)
1787{
1788 struct nlattr *key;
1789 struct get_key_cookie *cookie = c;
1790
1791 if (params->key)
1792 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_DATA,
1793 params->key_len, params->key);
1794
1795 if (params->seq)
1796 NLA_PUT(cookie->msg, NL80211_ATTR_KEY_SEQ,
1797 params->seq_len, params->seq);
1798
1799 if (params->cipher)
1800 NLA_PUT_U32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1801 params->cipher);
1802
1803 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
1804 if (!key)
1805 goto nla_put_failure;
1806
1807 if (params->key)
1808 NLA_PUT(cookie->msg, NL80211_KEY_DATA,
1809 params->key_len, params->key);
1810
1811 if (params->seq)
1812 NLA_PUT(cookie->msg, NL80211_KEY_SEQ,
1813 params->seq_len, params->seq);
1814
1815 if (params->cipher)
1816 NLA_PUT_U32(cookie->msg, NL80211_KEY_CIPHER,
1817 params->cipher);
1818
1819 NLA_PUT_U8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx);
1820
1821 nla_nest_end(cookie->msg, key);
1822
1823 return;
1824 nla_put_failure:
1825 cookie->error = 1;
1826}
1827
1828static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
1829{
1830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1831 int err;
1832 struct net_device *dev = info->user_ptr[1];
1833 u8 key_idx = 0;
1834 const u8 *mac_addr = NULL;
1835 bool pairwise;
1836 struct get_key_cookie cookie = {
1837 .error = 0,
1838 };
1839 void *hdr;
1840 struct sk_buff *msg;
1841
1842 if (info->attrs[NL80211_ATTR_KEY_IDX])
1843 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1844
1845 if (key_idx > 5)
1846 return -EINVAL;
1847
1848 if (info->attrs[NL80211_ATTR_MAC])
1849 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1850
1851 pairwise = !!mac_addr;
1852 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
1853 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1854 if (kt >= NUM_NL80211_KEYTYPES)
1855 return -EINVAL;
1856 if (kt != NL80211_KEYTYPE_GROUP &&
1857 kt != NL80211_KEYTYPE_PAIRWISE)
1858 return -EINVAL;
1859 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
1860 }
1861
1862 if (!rdev->ops->get_key)
1863 return -EOPNOTSUPP;
1864
1865 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1866 if (!msg)
1867 return -ENOMEM;
1868
1869 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
1870 NL80211_CMD_NEW_KEY);
1871 if (IS_ERR(hdr))
1872 return PTR_ERR(hdr);
1873
1874 cookie.msg = msg;
1875 cookie.idx = key_idx;
1876
1877 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
1878 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1879 if (mac_addr)
1880 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
1881
1882 if (pairwise && mac_addr &&
1883 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
1884 return -ENOENT;
1885
1886 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
1887 mac_addr, &cookie, get_key_callback);
1888
1889 if (err)
1890 goto free_msg;
1891
1892 if (cookie.error)
1893 goto nla_put_failure;
1894
1895 genlmsg_end(msg, hdr);
1896 return genlmsg_reply(msg, info);
1897
1898 nla_put_failure:
1899 err = -ENOBUFS;
1900 free_msg:
1901 nlmsg_free(msg);
1902 return err;
1903}
1904
1905static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
1906{
1907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1908 struct key_parse key;
1909 int err;
1910 struct net_device *dev = info->user_ptr[1];
1911
1912 err = nl80211_parse_key(info, &key);
1913 if (err)
1914 return err;
1915
1916 if (key.idx < 0)
1917 return -EINVAL;
1918
1919
1920 if (!key.def && !key.defmgmt)
1921 return -EINVAL;
1922
1923 wdev_lock(dev->ieee80211_ptr);
1924
1925 if (key.def) {
1926 if (!rdev->ops->set_default_key) {
1927 err = -EOPNOTSUPP;
1928 goto out;
1929 }
1930
1931 err = nl80211_key_allowed(dev->ieee80211_ptr);
1932 if (err)
1933 goto out;
1934
1935 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
1936 key.def_uni, key.def_multi);
1937
1938 if (err)
1939 goto out;
1940
1941#ifdef CONFIG_CFG80211_WEXT
1942 dev->ieee80211_ptr->wext.default_key = key.idx;
1943#endif
1944 } else {
1945 if (key.def_uni || !key.def_multi) {
1946 err = -EINVAL;
1947 goto out;
1948 }
1949
1950 if (!rdev->ops->set_default_mgmt_key) {
1951 err = -EOPNOTSUPP;
1952 goto out;
1953 }
1954
1955 err = nl80211_key_allowed(dev->ieee80211_ptr);
1956 if (err)
1957 goto out;
1958
1959 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
1960 dev, key.idx);
1961 if (err)
1962 goto out;
1963
1964#ifdef CONFIG_CFG80211_WEXT
1965 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
1966#endif
1967 }
1968
1969 out:
1970 wdev_unlock(dev->ieee80211_ptr);
1971
1972 return err;
1973}
1974
1975static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
1976{
1977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1978 int err;
1979 struct net_device *dev = info->user_ptr[1];
1980 struct key_parse key;
1981 const u8 *mac_addr = NULL;
1982
1983 err = nl80211_parse_key(info, &key);
1984 if (err)
1985 return err;
1986
1987 if (!key.p.key)
1988 return -EINVAL;
1989
1990 if (info->attrs[NL80211_ATTR_MAC])
1991 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
1992
1993 if (key.type == -1) {
1994 if (mac_addr)
1995 key.type = NL80211_KEYTYPE_PAIRWISE;
1996 else
1997 key.type = NL80211_KEYTYPE_GROUP;
1998 }
1999
2000
2001 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2002 key.type != NL80211_KEYTYPE_GROUP)
2003 return -EINVAL;
2004
2005 if (!rdev->ops->add_key)
2006 return -EOPNOTSUPP;
2007
2008 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2009 key.type == NL80211_KEYTYPE_PAIRWISE,
2010 mac_addr))
2011 return -EINVAL;
2012
2013 wdev_lock(dev->ieee80211_ptr);
2014 err = nl80211_key_allowed(dev->ieee80211_ptr);
2015 if (!err)
2016 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2017 key.type == NL80211_KEYTYPE_PAIRWISE,
2018 mac_addr, &key.p);
2019 wdev_unlock(dev->ieee80211_ptr);
2020
2021 return err;
2022}
2023
2024static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2025{
2026 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2027 int err;
2028 struct net_device *dev = info->user_ptr[1];
2029 u8 *mac_addr = NULL;
2030 struct key_parse key;
2031
2032 err = nl80211_parse_key(info, &key);
2033 if (err)
2034 return err;
2035
2036 if (info->attrs[NL80211_ATTR_MAC])
2037 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2038
2039 if (key.type == -1) {
2040 if (mac_addr)
2041 key.type = NL80211_KEYTYPE_PAIRWISE;
2042 else
2043 key.type = NL80211_KEYTYPE_GROUP;
2044 }
2045
2046
2047 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2048 key.type != NL80211_KEYTYPE_GROUP)
2049 return -EINVAL;
2050
2051 if (!rdev->ops->del_key)
2052 return -EOPNOTSUPP;
2053
2054 wdev_lock(dev->ieee80211_ptr);
2055 err = nl80211_key_allowed(dev->ieee80211_ptr);
2056
2057 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2058 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2059 err = -ENOENT;
2060
2061 if (!err)
2062 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2063 key.type == NL80211_KEYTYPE_PAIRWISE,
2064 mac_addr);
2065
2066#ifdef CONFIG_CFG80211_WEXT
2067 if (!err) {
2068 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2069 dev->ieee80211_ptr->wext.default_key = -1;
2070 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2071 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2072 }
2073#endif
2074 wdev_unlock(dev->ieee80211_ptr);
2075
2076 return err;
2077}
2078
2079static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
2080{
2081 int (*call)(struct wiphy *wiphy, struct net_device *dev,
2082 struct beacon_parameters *info);
2083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2084 struct net_device *dev = info->user_ptr[1];
2085 struct wireless_dev *wdev = dev->ieee80211_ptr;
2086 struct beacon_parameters params;
2087 int haveinfo = 0, err;
2088
2089 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2090 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2091 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2092 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2093 return -EINVAL;
2094
2095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2096 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2097 return -EOPNOTSUPP;
2098
2099 memset(¶ms, 0, sizeof(params));
2100
2101 switch (info->genlhdr->cmd) {
2102 case NL80211_CMD_NEW_BEACON:
2103
2104 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2105 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2106 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2107 return -EINVAL;
2108
2109 params.interval =
2110 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2111 params.dtim_period =
2112 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2113
2114 err = cfg80211_validate_beacon_int(rdev, params.interval);
2115 if (err)
2116 return err;
2117
2118
2119
2120
2121
2122
2123
2124
2125 if (info->attrs[NL80211_ATTR_SSID]) {
2126 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2127 params.ssid_len =
2128 nla_len(info->attrs[NL80211_ATTR_SSID]);
2129 if (params.ssid_len == 0 ||
2130 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2131 return -EINVAL;
2132 }
2133
2134 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2135 params.hidden_ssid = nla_get_u32(
2136 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2137 if (params.hidden_ssid !=
2138 NL80211_HIDDEN_SSID_NOT_IN_USE &&
2139 params.hidden_ssid !=
2140 NL80211_HIDDEN_SSID_ZERO_LEN &&
2141 params.hidden_ssid !=
2142 NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2143 return -EINVAL;
2144 }
2145
2146 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2147
2148 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2149 params.auth_type = nla_get_u32(
2150 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2151 if (!nl80211_valid_auth_type(params.auth_type))
2152 return -EINVAL;
2153 } else
2154 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2155
2156 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto,
2157 NL80211_MAX_NR_CIPHER_SUITES);
2158 if (err)
2159 return err;
2160
2161 call = rdev->ops->add_beacon;
2162 break;
2163 case NL80211_CMD_SET_BEACON:
2164 call = rdev->ops->set_beacon;
2165 break;
2166 default:
2167 WARN_ON(1);
2168 return -EOPNOTSUPP;
2169 }
2170
2171 if (!call)
2172 return -EOPNOTSUPP;
2173
2174 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2175 params.head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2176 params.head_len =
2177 nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2178 haveinfo = 1;
2179 }
2180
2181 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2182 params.tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2183 params.tail_len =
2184 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2185 haveinfo = 1;
2186 }
2187
2188 if (!haveinfo)
2189 return -EINVAL;
2190
2191 if (info->attrs[NL80211_ATTR_IE]) {
2192 params.beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2193 params.beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2194 }
2195
2196 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2197 params.proberesp_ies =
2198 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2199 params.proberesp_ies_len =
2200 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2201 }
2202
2203 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2204 params.assocresp_ies =
2205 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2206 params.assocresp_ies_len =
2207 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2208 }
2209
2210 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2211 params.probe_resp =
2212 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2213 params.probe_resp_len =
2214 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2215 }
2216
2217 err = call(&rdev->wiphy, dev, ¶ms);
2218 if (!err && params.interval)
2219 wdev->beacon_interval = params.interval;
2220 return err;
2221}
2222
2223static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
2224{
2225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2226 struct net_device *dev = info->user_ptr[1];
2227 struct wireless_dev *wdev = dev->ieee80211_ptr;
2228 int err;
2229
2230 if (!rdev->ops->del_beacon)
2231 return -EOPNOTSUPP;
2232
2233 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2234 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2235 return -EOPNOTSUPP;
2236
2237 err = rdev->ops->del_beacon(&rdev->wiphy, dev);
2238 if (!err)
2239 wdev->beacon_interval = 0;
2240 return err;
2241}
2242
2243static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2244 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2245 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2246 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2247 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2248 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2249 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2250};
2251
2252static int parse_station_flags(struct genl_info *info,
2253 enum nl80211_iftype iftype,
2254 struct station_parameters *params)
2255{
2256 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2257 struct nlattr *nla;
2258 int flag;
2259
2260
2261
2262
2263
2264 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2265 if (nla) {
2266 struct nl80211_sta_flag_update *sta_flags;
2267
2268 sta_flags = nla_data(nla);
2269 params->sta_flags_mask = sta_flags->mask;
2270 params->sta_flags_set = sta_flags->set;
2271 if ((params->sta_flags_mask |
2272 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2273 return -EINVAL;
2274 return 0;
2275 }
2276
2277
2278
2279 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2280 if (!nla)
2281 return 0;
2282
2283 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2284 nla, sta_flags_policy))
2285 return -EINVAL;
2286
2287
2288
2289
2290
2291
2292
2293 switch (iftype) {
2294 case NL80211_IFTYPE_AP:
2295 case NL80211_IFTYPE_AP_VLAN:
2296 case NL80211_IFTYPE_P2P_GO:
2297 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2298 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2299 BIT(NL80211_STA_FLAG_WME) |
2300 BIT(NL80211_STA_FLAG_MFP);
2301 break;
2302 case NL80211_IFTYPE_P2P_CLIENT:
2303 case NL80211_IFTYPE_STATION:
2304 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2305 BIT(NL80211_STA_FLAG_TDLS_PEER);
2306 break;
2307 case NL80211_IFTYPE_MESH_POINT:
2308 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2309 BIT(NL80211_STA_FLAG_MFP) |
2310 BIT(NL80211_STA_FLAG_AUTHORIZED);
2311 default:
2312 return -EINVAL;
2313 }
2314
2315 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++)
2316 if (flags[flag])
2317 params->sta_flags_set |= (1<<flag);
2318
2319 return 0;
2320}
2321
2322static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2323 int attr)
2324{
2325 struct nlattr *rate;
2326 u16 bitrate;
2327
2328 rate = nla_nest_start(msg, attr);
2329 if (!rate)
2330 goto nla_put_failure;
2331
2332
2333 bitrate = cfg80211_calculate_bitrate(info);
2334 if (bitrate > 0)
2335 NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
2336
2337 if (info->flags & RATE_INFO_FLAGS_MCS)
2338 NLA_PUT_U8(msg, NL80211_RATE_INFO_MCS, info->mcs);
2339 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH)
2340 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_40_MHZ_WIDTH);
2341 if (info->flags & RATE_INFO_FLAGS_SHORT_GI)
2342 NLA_PUT_FLAG(msg, NL80211_RATE_INFO_SHORT_GI);
2343
2344 nla_nest_end(msg, rate);
2345 return true;
2346
2347nla_put_failure:
2348 return false;
2349}
2350
2351static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2352 int flags, struct net_device *dev,
2353 const u8 *mac_addr, struct station_info *sinfo)
2354{
2355 void *hdr;
2356 struct nlattr *sinfoattr, *bss_param;
2357
2358 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2359 if (!hdr)
2360 return -1;
2361
2362 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2363 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
2364
2365 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, sinfo->generation);
2366
2367 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2368 if (!sinfoattr)
2369 goto nla_put_failure;
2370 if (sinfo->filled & STATION_INFO_CONNECTED_TIME)
2371 NLA_PUT_U32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2372 sinfo->connected_time);
2373 if (sinfo->filled & STATION_INFO_INACTIVE_TIME)
2374 NLA_PUT_U32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2375 sinfo->inactive_time);
2376 if (sinfo->filled & STATION_INFO_RX_BYTES)
2377 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_BYTES,
2378 sinfo->rx_bytes);
2379 if (sinfo->filled & STATION_INFO_TX_BYTES)
2380 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_BYTES,
2381 sinfo->tx_bytes);
2382 if (sinfo->filled & STATION_INFO_LLID)
2383 NLA_PUT_U16(msg, NL80211_STA_INFO_LLID,
2384 sinfo->llid);
2385 if (sinfo->filled & STATION_INFO_PLID)
2386 NLA_PUT_U16(msg, NL80211_STA_INFO_PLID,
2387 sinfo->plid);
2388 if (sinfo->filled & STATION_INFO_PLINK_STATE)
2389 NLA_PUT_U8(msg, NL80211_STA_INFO_PLINK_STATE,
2390 sinfo->plink_state);
2391 if (sinfo->filled & STATION_INFO_SIGNAL)
2392 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL,
2393 sinfo->signal);
2394 if (sinfo->filled & STATION_INFO_SIGNAL_AVG)
2395 NLA_PUT_U8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2396 sinfo->signal_avg);
2397 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2398 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2399 NL80211_STA_INFO_TX_BITRATE))
2400 goto nla_put_failure;
2401 }
2402 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2403 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2404 NL80211_STA_INFO_RX_BITRATE))
2405 goto nla_put_failure;
2406 }
2407 if (sinfo->filled & STATION_INFO_RX_PACKETS)
2408 NLA_PUT_U32(msg, NL80211_STA_INFO_RX_PACKETS,
2409 sinfo->rx_packets);
2410 if (sinfo->filled & STATION_INFO_TX_PACKETS)
2411 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_PACKETS,
2412 sinfo->tx_packets);
2413 if (sinfo->filled & STATION_INFO_TX_RETRIES)
2414 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_RETRIES,
2415 sinfo->tx_retries);
2416 if (sinfo->filled & STATION_INFO_TX_FAILED)
2417 NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
2418 sinfo->tx_failed);
2419 if (sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT)
2420 NLA_PUT_U32(msg, NL80211_STA_INFO_BEACON_LOSS,
2421 sinfo->beacon_loss_count);
2422 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2423 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2424 if (!bss_param)
2425 goto nla_put_failure;
2426
2427 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
2428 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
2429 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
2430 NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
2431 if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
2432 NLA_PUT_FLAG(msg,
2433 NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
2434 NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2435 sinfo->bss_param.dtim_period);
2436 NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2437 sinfo->bss_param.beacon_interval);
2438
2439 nla_nest_end(msg, bss_param);
2440 }
2441 if (sinfo->filled & STATION_INFO_STA_FLAGS)
2442 NLA_PUT(msg, NL80211_STA_INFO_STA_FLAGS,
2443 sizeof(struct nl80211_sta_flag_update),
2444 &sinfo->sta_flags);
2445 nla_nest_end(msg, sinfoattr);
2446
2447 if (sinfo->filled & STATION_INFO_ASSOC_REQ_IES)
2448 NLA_PUT(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2449 sinfo->assoc_req_ies);
2450
2451 return genlmsg_end(msg, hdr);
2452
2453 nla_put_failure:
2454 genlmsg_cancel(msg, hdr);
2455 return -EMSGSIZE;
2456}
2457
2458static int nl80211_dump_station(struct sk_buff *skb,
2459 struct netlink_callback *cb)
2460{
2461 struct station_info sinfo;
2462 struct cfg80211_registered_device *dev;
2463 struct net_device *netdev;
2464 u8 mac_addr[ETH_ALEN];
2465 int sta_idx = cb->args[1];
2466 int err;
2467
2468 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2469 if (err)
2470 return err;
2471
2472 if (!dev->ops->dump_station) {
2473 err = -EOPNOTSUPP;
2474 goto out_err;
2475 }
2476
2477 while (1) {
2478 memset(&sinfo, 0, sizeof(sinfo));
2479 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2480 mac_addr, &sinfo);
2481 if (err == -ENOENT)
2482 break;
2483 if (err)
2484 goto out_err;
2485
2486 if (nl80211_send_station(skb,
2487 NETLINK_CB(cb->skb).pid,
2488 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2489 netdev, mac_addr,
2490 &sinfo) < 0)
2491 goto out;
2492
2493 sta_idx++;
2494 }
2495
2496
2497 out:
2498 cb->args[1] = sta_idx;
2499 err = skb->len;
2500 out_err:
2501 nl80211_finish_netdev_dump(dev);
2502
2503 return err;
2504}
2505
2506static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2507{
2508 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2509 struct net_device *dev = info->user_ptr[1];
2510 struct station_info sinfo;
2511 struct sk_buff *msg;
2512 u8 *mac_addr = NULL;
2513 int err;
2514
2515 memset(&sinfo, 0, sizeof(sinfo));
2516
2517 if (!info->attrs[NL80211_ATTR_MAC])
2518 return -EINVAL;
2519
2520 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2521
2522 if (!rdev->ops->get_station)
2523 return -EOPNOTSUPP;
2524
2525 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2526 if (err)
2527 return err;
2528
2529 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2530 if (!msg)
2531 return -ENOMEM;
2532
2533 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2534 dev, mac_addr, &sinfo) < 0) {
2535 nlmsg_free(msg);
2536 return -ENOBUFS;
2537 }
2538
2539 return genlmsg_reply(msg, info);
2540}
2541
2542
2543
2544
2545static struct net_device *get_vlan(struct genl_info *info,
2546 struct cfg80211_registered_device *rdev)
2547{
2548 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2549 struct net_device *v;
2550 int ret;
2551
2552 if (!vlanattr)
2553 return NULL;
2554
2555 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2556 if (!v)
2557 return ERR_PTR(-ENODEV);
2558
2559 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2560 ret = -EINVAL;
2561 goto error;
2562 }
2563
2564 if (!netif_running(v)) {
2565 ret = -ENETDOWN;
2566 goto error;
2567 }
2568
2569 return v;
2570 error:
2571 dev_put(v);
2572 return ERR_PTR(ret);
2573}
2574
2575static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2576{
2577 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2578 int err;
2579 struct net_device *dev = info->user_ptr[1];
2580 struct station_parameters params;
2581 u8 *mac_addr = NULL;
2582
2583 memset(¶ms, 0, sizeof(params));
2584
2585 params.listen_interval = -1;
2586 params.plink_state = -1;
2587
2588 if (info->attrs[NL80211_ATTR_STA_AID])
2589 return -EINVAL;
2590
2591 if (!info->attrs[NL80211_ATTR_MAC])
2592 return -EINVAL;
2593
2594 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2595
2596 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2597 params.supported_rates =
2598 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2599 params.supported_rates_len =
2600 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2601 }
2602
2603 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2604 params.listen_interval =
2605 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2606
2607 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2608 params.ht_capa =
2609 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2610
2611 if (!rdev->ops->change_station)
2612 return -EOPNOTSUPP;
2613
2614 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
2615 return -EINVAL;
2616
2617 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2618 params.plink_action =
2619 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2620
2621 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2622 params.plink_state =
2623 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2624
2625 switch (dev->ieee80211_ptr->iftype) {
2626 case NL80211_IFTYPE_AP:
2627 case NL80211_IFTYPE_AP_VLAN:
2628 case NL80211_IFTYPE_P2P_GO:
2629
2630 if (params.plink_action)
2631 return -EINVAL;
2632
2633
2634 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2635 return -EINVAL;
2636
2637
2638
2639
2640
2641 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2642
2643
2644 if (params.sta_flags_mask &
2645 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2646 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2647 BIT(NL80211_STA_FLAG_WME) |
2648 BIT(NL80211_STA_FLAG_MFP)))
2649 return -EINVAL;
2650
2651
2652 params.vlan = get_vlan(info, rdev);
2653 if (IS_ERR(params.vlan))
2654 return PTR_ERR(params.vlan);
2655 break;
2656 case NL80211_IFTYPE_P2P_CLIENT:
2657 case NL80211_IFTYPE_STATION:
2658
2659 if (params.plink_action)
2660 return -EINVAL;
2661 if (params.ht_capa)
2662 return -EINVAL;
2663 if (params.listen_interval >= 0)
2664 return -EINVAL;
2665
2666
2667
2668
2669
2670
2671 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2672
2673
2674 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2675 return -EINVAL;
2676 break;
2677 case NL80211_IFTYPE_MESH_POINT:
2678
2679 if (params.vlan)
2680 return -EINVAL;
2681 if (params.ht_capa)
2682 return -EINVAL;
2683 if (params.listen_interval >= 0)
2684 return -EINVAL;
2685
2686
2687
2688
2689 if (params.sta_flags_mask &
2690 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2691 BIT(NL80211_STA_FLAG_MFP) |
2692 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2693 return -EINVAL;
2694 break;
2695 default:
2696 return -EOPNOTSUPP;
2697 }
2698
2699
2700
2701 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2702
2703 if (params.vlan)
2704 dev_put(params.vlan);
2705
2706 return err;
2707}
2708
2709static struct nla_policy
2710nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
2711 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
2712 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
2713};
2714
2715static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
2716{
2717 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2718 int err;
2719 struct net_device *dev = info->user_ptr[1];
2720 struct station_parameters params;
2721 u8 *mac_addr = NULL;
2722
2723 memset(¶ms, 0, sizeof(params));
2724
2725 if (!info->attrs[NL80211_ATTR_MAC])
2726 return -EINVAL;
2727
2728 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2729 return -EINVAL;
2730
2731 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
2732 return -EINVAL;
2733
2734 if (!info->attrs[NL80211_ATTR_STA_AID])
2735 return -EINVAL;
2736
2737 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2738 params.supported_rates =
2739 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2740 params.supported_rates_len =
2741 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2742 params.listen_interval =
2743 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2744
2745 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
2746 if (!params.aid || params.aid > IEEE80211_MAX_AID)
2747 return -EINVAL;
2748
2749 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2750 params.ht_capa =
2751 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2752
2753 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2754 params.plink_action =
2755 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2756
2757 if (!rdev->ops->add_station)
2758 return -EOPNOTSUPP;
2759
2760 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
2761 return -EINVAL;
2762
2763 switch (dev->ieee80211_ptr->iftype) {
2764 case NL80211_IFTYPE_AP:
2765 case NL80211_IFTYPE_AP_VLAN:
2766 case NL80211_IFTYPE_P2P_GO:
2767
2768 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2769 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
2770 info->attrs[NL80211_ATTR_STA_WME]) {
2771 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
2772 struct nlattr *nla;
2773
2774 nla = info->attrs[NL80211_ATTR_STA_WME];
2775 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
2776 nl80211_sta_wme_policy);
2777 if (err)
2778 return err;
2779
2780 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
2781 params.uapsd_queues =
2782 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
2783 if (params.uapsd_queues &
2784 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
2785 return -EINVAL;
2786
2787 if (tb[NL80211_STA_WME_MAX_SP])
2788 params.max_sp =
2789 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
2790
2791 if (params.max_sp &
2792 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
2793 return -EINVAL;
2794
2795 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
2796 }
2797
2798 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2799 return -EINVAL;
2800
2801 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2802
2803
2804 params.vlan = get_vlan(info, rdev);
2805 if (IS_ERR(params.vlan))
2806 return PTR_ERR(params.vlan);
2807 break;
2808 case NL80211_IFTYPE_MESH_POINT:
2809
2810 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2811 return -EINVAL;
2812 break;
2813 case NL80211_IFTYPE_STATION:
2814
2815 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
2816 return -EINVAL;
2817
2818 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
2819 return -EOPNOTSUPP;
2820
2821 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
2822 return -EOPNOTSUPP;
2823 break;
2824 default:
2825 return -EOPNOTSUPP;
2826 }
2827
2828
2829
2830 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms);
2831
2832 if (params.vlan)
2833 dev_put(params.vlan);
2834 return err;
2835}
2836
2837static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
2838{
2839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2840 struct net_device *dev = info->user_ptr[1];
2841 u8 *mac_addr = NULL;
2842
2843 if (info->attrs[NL80211_ATTR_MAC])
2844 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2845
2846 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2847 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
2848 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
2849 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2850 return -EINVAL;
2851
2852 if (!rdev->ops->del_station)
2853 return -EOPNOTSUPP;
2854
2855 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
2856}
2857
2858static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
2859 int flags, struct net_device *dev,
2860 u8 *dst, u8 *next_hop,
2861 struct mpath_info *pinfo)
2862{
2863 void *hdr;
2864 struct nlattr *pinfoattr;
2865
2866 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2867 if (!hdr)
2868 return -1;
2869
2870 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
2871 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
2872 NLA_PUT(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop);
2873
2874 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, pinfo->generation);
2875
2876 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
2877 if (!pinfoattr)
2878 goto nla_put_failure;
2879 if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
2880 NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
2881 pinfo->frame_qlen);
2882 if (pinfo->filled & MPATH_INFO_SN)
2883 NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
2884 pinfo->sn);
2885 if (pinfo->filled & MPATH_INFO_METRIC)
2886 NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
2887 pinfo->metric);
2888 if (pinfo->filled & MPATH_INFO_EXPTIME)
2889 NLA_PUT_U32(msg, NL80211_MPATH_INFO_EXPTIME,
2890 pinfo->exptime);
2891 if (pinfo->filled & MPATH_INFO_FLAGS)
2892 NLA_PUT_U8(msg, NL80211_MPATH_INFO_FLAGS,
2893 pinfo->flags);
2894 if (pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT)
2895 NLA_PUT_U32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
2896 pinfo->discovery_timeout);
2897 if (pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES)
2898 NLA_PUT_U8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
2899 pinfo->discovery_retries);
2900
2901 nla_nest_end(msg, pinfoattr);
2902
2903 return genlmsg_end(msg, hdr);
2904
2905 nla_put_failure:
2906 genlmsg_cancel(msg, hdr);
2907 return -EMSGSIZE;
2908}
2909
2910static int nl80211_dump_mpath(struct sk_buff *skb,
2911 struct netlink_callback *cb)
2912{
2913 struct mpath_info pinfo;
2914 struct cfg80211_registered_device *dev;
2915 struct net_device *netdev;
2916 u8 dst[ETH_ALEN];
2917 u8 next_hop[ETH_ALEN];
2918 int path_idx = cb->args[1];
2919 int err;
2920
2921 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2922 if (err)
2923 return err;
2924
2925 if (!dev->ops->dump_mpath) {
2926 err = -EOPNOTSUPP;
2927 goto out_err;
2928 }
2929
2930 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
2931 err = -EOPNOTSUPP;
2932 goto out_err;
2933 }
2934
2935 while (1) {
2936 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
2937 dst, next_hop, &pinfo);
2938 if (err == -ENOENT)
2939 break;
2940 if (err)
2941 goto out_err;
2942
2943 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
2944 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2945 netdev, dst, next_hop,
2946 &pinfo) < 0)
2947 goto out;
2948
2949 path_idx++;
2950 }
2951
2952
2953 out:
2954 cb->args[1] = path_idx;
2955 err = skb->len;
2956 out_err:
2957 nl80211_finish_netdev_dump(dev);
2958 return err;
2959}
2960
2961static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
2962{
2963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2964 int err;
2965 struct net_device *dev = info->user_ptr[1];
2966 struct mpath_info pinfo;
2967 struct sk_buff *msg;
2968 u8 *dst = NULL;
2969 u8 next_hop[ETH_ALEN];
2970
2971 memset(&pinfo, 0, sizeof(pinfo));
2972
2973 if (!info->attrs[NL80211_ATTR_MAC])
2974 return -EINVAL;
2975
2976 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
2977
2978 if (!rdev->ops->get_mpath)
2979 return -EOPNOTSUPP;
2980
2981 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
2982 return -EOPNOTSUPP;
2983
2984 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
2985 if (err)
2986 return err;
2987
2988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2989 if (!msg)
2990 return -ENOMEM;
2991
2992 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
2993 dev, dst, next_hop, &pinfo) < 0) {
2994 nlmsg_free(msg);
2995 return -ENOBUFS;
2996 }
2997
2998 return genlmsg_reply(msg, info);
2999}
3000
3001static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3002{
3003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3004 struct net_device *dev = info->user_ptr[1];
3005 u8 *dst = NULL;
3006 u8 *next_hop = NULL;
3007
3008 if (!info->attrs[NL80211_ATTR_MAC])
3009 return -EINVAL;
3010
3011 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3012 return -EINVAL;
3013
3014 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3015 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3016
3017 if (!rdev->ops->change_mpath)
3018 return -EOPNOTSUPP;
3019
3020 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3021 return -EOPNOTSUPP;
3022
3023 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3024}
3025
3026static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3027{
3028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3029 struct net_device *dev = info->user_ptr[1];
3030 u8 *dst = NULL;
3031 u8 *next_hop = NULL;
3032
3033 if (!info->attrs[NL80211_ATTR_MAC])
3034 return -EINVAL;
3035
3036 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3037 return -EINVAL;
3038
3039 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3040 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3041
3042 if (!rdev->ops->add_mpath)
3043 return -EOPNOTSUPP;
3044
3045 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3046 return -EOPNOTSUPP;
3047
3048 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3049}
3050
3051static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3052{
3053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3054 struct net_device *dev = info->user_ptr[1];
3055 u8 *dst = NULL;
3056
3057 if (info->attrs[NL80211_ATTR_MAC])
3058 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3059
3060 if (!rdev->ops->del_mpath)
3061 return -EOPNOTSUPP;
3062
3063 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3064}
3065
3066static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3067{
3068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3069 struct net_device *dev = info->user_ptr[1];
3070 struct bss_parameters params;
3071
3072 memset(¶ms, 0, sizeof(params));
3073
3074 params.use_cts_prot = -1;
3075 params.use_short_preamble = -1;
3076 params.use_short_slot_time = -1;
3077 params.ap_isolate = -1;
3078 params.ht_opmode = -1;
3079
3080 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3081 params.use_cts_prot =
3082 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3083 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3084 params.use_short_preamble =
3085 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3086 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3087 params.use_short_slot_time =
3088 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3089 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3090 params.basic_rates =
3091 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3092 params.basic_rates_len =
3093 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3094 }
3095 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3096 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3097 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3098 params.ht_opmode =
3099 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3100
3101 if (!rdev->ops->change_bss)
3102 return -EOPNOTSUPP;
3103
3104 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3105 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3106 return -EOPNOTSUPP;
3107
3108 return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
3109}
3110
3111static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3112 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3113 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3114 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3115 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3116 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3117 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3118};
3119
3120static int parse_reg_rule(struct nlattr *tb[],
3121 struct ieee80211_reg_rule *reg_rule)
3122{
3123 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
3124 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
3125
3126 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3127 return -EINVAL;
3128 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3129 return -EINVAL;
3130 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3131 return -EINVAL;
3132 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3133 return -EINVAL;
3134 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3135 return -EINVAL;
3136
3137 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3138
3139 freq_range->start_freq_khz =
3140 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3141 freq_range->end_freq_khz =
3142 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3143 freq_range->max_bandwidth_khz =
3144 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3145
3146 power_rule->max_eirp =
3147 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3148
3149 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3150 power_rule->max_antenna_gain =
3151 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3152
3153 return 0;
3154}
3155
3156static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3157{
3158 int r;
3159 char *data = NULL;
3160
3161
3162
3163
3164
3165
3166
3167 mutex_lock(&cfg80211_mutex);
3168 if (unlikely(!cfg80211_regdomain)) {
3169 mutex_unlock(&cfg80211_mutex);
3170 return -EINPROGRESS;
3171 }
3172 mutex_unlock(&cfg80211_mutex);
3173
3174 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3175 return -EINVAL;
3176
3177 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3178
3179 r = regulatory_hint_user(data);
3180
3181 return r;
3182}
3183
3184static int nl80211_get_mesh_config(struct sk_buff *skb,
3185 struct genl_info *info)
3186{
3187 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3188 struct net_device *dev = info->user_ptr[1];
3189 struct wireless_dev *wdev = dev->ieee80211_ptr;
3190 struct mesh_config cur_params;
3191 int err = 0;
3192 void *hdr;
3193 struct nlattr *pinfoattr;
3194 struct sk_buff *msg;
3195
3196 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3197 return -EOPNOTSUPP;
3198
3199 if (!rdev->ops->get_mesh_config)
3200 return -EOPNOTSUPP;
3201
3202 wdev_lock(wdev);
3203
3204 if (!wdev->mesh_id_len)
3205 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3206 else
3207 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3208 &cur_params);
3209 wdev_unlock(wdev);
3210
3211 if (err)
3212 return err;
3213
3214
3215 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3216 if (!msg)
3217 return -ENOMEM;
3218 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3219 NL80211_CMD_GET_MESH_CONFIG);
3220 if (!hdr)
3221 goto out;
3222 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3223 if (!pinfoattr)
3224 goto nla_put_failure;
3225 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
3226 NLA_PUT_U16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3227 cur_params.dot11MeshRetryTimeout);
3228 NLA_PUT_U16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3229 cur_params.dot11MeshConfirmTimeout);
3230 NLA_PUT_U16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3231 cur_params.dot11MeshHoldingTimeout);
3232 NLA_PUT_U16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3233 cur_params.dot11MeshMaxPeerLinks);
3234 NLA_PUT_U8(msg, NL80211_MESHCONF_MAX_RETRIES,
3235 cur_params.dot11MeshMaxRetries);
3236 NLA_PUT_U8(msg, NL80211_MESHCONF_TTL,
3237 cur_params.dot11MeshTTL);
3238 NLA_PUT_U8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3239 cur_params.element_ttl);
3240 NLA_PUT_U8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3241 cur_params.auto_open_plinks);
3242 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3243 cur_params.dot11MeshHWMPmaxPREQretries);
3244 NLA_PUT_U32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3245 cur_params.path_refresh_time);
3246 NLA_PUT_U16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3247 cur_params.min_discovery_timeout);
3248 NLA_PUT_U32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3249 cur_params.dot11MeshHWMPactivePathTimeout);
3250 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3251 cur_params.dot11MeshHWMPpreqMinInterval);
3252 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3253 cur_params.dot11MeshHWMPperrMinInterval);
3254 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3255 cur_params.dot11MeshHWMPnetDiameterTraversalTime);
3256 NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3257 cur_params.dot11MeshHWMPRootMode);
3258 NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3259 cur_params.dot11MeshHWMPRannInterval);
3260 NLA_PUT_U8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3261 cur_params.dot11MeshGateAnnouncementProtocol);
3262 nla_nest_end(msg, pinfoattr);
3263 genlmsg_end(msg, hdr);
3264 return genlmsg_reply(msg, info);
3265
3266 nla_put_failure:
3267 genlmsg_cancel(msg, hdr);
3268 out:
3269 nlmsg_free(msg);
3270 return -ENOBUFS;
3271}
3272
3273static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3274 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3275 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3276 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3277 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3278 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3279 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3280 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3281 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3282
3283 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3284 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3285 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3286 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3287 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3288 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3289 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3290 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3291 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3292 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3293};
3294
3295static const struct nla_policy
3296 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3297 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3298 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3299 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3300 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3301 .len = IEEE80211_MAX_DATA_LEN },
3302 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3303};
3304
3305static int nl80211_parse_mesh_config(struct genl_info *info,
3306 struct mesh_config *cfg,
3307 u32 *mask_out)
3308{
3309 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3310 u32 mask = 0;
3311
3312#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3313do {\
3314 if (table[attr_num]) {\
3315 cfg->param = nla_fn(table[attr_num]); \
3316 mask |= (1 << (attr_num - 1)); \
3317 } \
3318} while (0);\
3319
3320
3321 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3322 return -EINVAL;
3323 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3324 info->attrs[NL80211_ATTR_MESH_CONFIG],
3325 nl80211_meshconf_params_policy))
3326 return -EINVAL;
3327
3328
3329
3330 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3331
3332
3333 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3334 mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
3335 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3336 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, nla_get_u16);
3337 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3338 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, nla_get_u16);
3339 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3340 mask, NL80211_MESHCONF_MAX_PEER_LINKS, nla_get_u16);
3341 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3342 mask, NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
3343 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3344 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3345 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3346 mask, NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
3347 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3348 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, nla_get_u8);
3349 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3350 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3351 nla_get_u8);
3352 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3353 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, nla_get_u32);
3354 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3355 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3356 nla_get_u16);
3357 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
3358 mask, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3359 nla_get_u32);
3360 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3361 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3362 nla_get_u16);
3363 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3364 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3365 nla_get_u16);
3366 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3367 dot11MeshHWMPnetDiameterTraversalTime,
3368 mask, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3369 nla_get_u16);
3370 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3371 dot11MeshHWMPRootMode, mask,
3372 NL80211_MESHCONF_HWMP_ROOTMODE,
3373 nla_get_u8);
3374 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3375 dot11MeshHWMPRannInterval, mask,
3376 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3377 nla_get_u16);
3378 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3379 dot11MeshGateAnnouncementProtocol, mask,
3380 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3381 nla_get_u8);
3382 if (mask_out)
3383 *mask_out = mask;
3384
3385 return 0;
3386
3387#undef FILL_IN_MESH_PARAM_IF_SET
3388}
3389
3390static int nl80211_parse_mesh_setup(struct genl_info *info,
3391 struct mesh_setup *setup)
3392{
3393 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3394
3395 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3396 return -EINVAL;
3397 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3398 info->attrs[NL80211_ATTR_MESH_SETUP],
3399 nl80211_mesh_setup_params_policy))
3400 return -EINVAL;
3401
3402 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3403 setup->path_sel_proto =
3404 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3405 IEEE80211_PATH_PROTOCOL_VENDOR :
3406 IEEE80211_PATH_PROTOCOL_HWMP;
3407
3408 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3409 setup->path_metric =
3410 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3411 IEEE80211_PATH_METRIC_VENDOR :
3412 IEEE80211_PATH_METRIC_AIRTIME;
3413
3414
3415 if (tb[NL80211_MESH_SETUP_IE]) {
3416 struct nlattr *ieattr =
3417 tb[NL80211_MESH_SETUP_IE];
3418 if (!is_valid_ie_attr(ieattr))
3419 return -EINVAL;
3420 setup->ie = nla_data(ieattr);
3421 setup->ie_len = nla_len(ieattr);
3422 }
3423 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3424 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3425
3426 return 0;
3427}
3428
3429static int nl80211_update_mesh_config(struct sk_buff *skb,
3430 struct genl_info *info)
3431{
3432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3433 struct net_device *dev = info->user_ptr[1];
3434 struct wireless_dev *wdev = dev->ieee80211_ptr;
3435 struct mesh_config cfg;
3436 u32 mask;
3437 int err;
3438
3439 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3440 return -EOPNOTSUPP;
3441
3442 if (!rdev->ops->update_mesh_config)
3443 return -EOPNOTSUPP;
3444
3445 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3446 if (err)
3447 return err;
3448
3449 wdev_lock(wdev);
3450 if (!wdev->mesh_id_len)
3451 err = -ENOLINK;
3452
3453 if (!err)
3454 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3455 mask, &cfg);
3456
3457 wdev_unlock(wdev);
3458
3459 return err;
3460}
3461
3462static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3463{
3464 struct sk_buff *msg;
3465 void *hdr = NULL;
3466 struct nlattr *nl_reg_rules;
3467 unsigned int i;
3468 int err = -EINVAL;
3469
3470 mutex_lock(&cfg80211_mutex);
3471
3472 if (!cfg80211_regdomain)
3473 goto out;
3474
3475 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3476 if (!msg) {
3477 err = -ENOBUFS;
3478 goto out;
3479 }
3480
3481 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3482 NL80211_CMD_GET_REG);
3483 if (!hdr)
3484 goto put_failure;
3485
3486 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2,
3487 cfg80211_regdomain->alpha2);
3488 if (cfg80211_regdomain->dfs_region)
3489 NLA_PUT_U8(msg, NL80211_ATTR_DFS_REGION,
3490 cfg80211_regdomain->dfs_region);
3491
3492 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3493 if (!nl_reg_rules)
3494 goto nla_put_failure;
3495
3496 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3497 struct nlattr *nl_reg_rule;
3498 const struct ieee80211_reg_rule *reg_rule;
3499 const struct ieee80211_freq_range *freq_range;
3500 const struct ieee80211_power_rule *power_rule;
3501
3502 reg_rule = &cfg80211_regdomain->reg_rules[i];
3503 freq_range = ®_rule->freq_range;
3504 power_rule = ®_rule->power_rule;
3505
3506 nl_reg_rule = nla_nest_start(msg, i);
3507 if (!nl_reg_rule)
3508 goto nla_put_failure;
3509
3510 NLA_PUT_U32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3511 reg_rule->flags);
3512 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_START,
3513 freq_range->start_freq_khz);
3514 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_END,
3515 freq_range->end_freq_khz);
3516 NLA_PUT_U32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3517 freq_range->max_bandwidth_khz);
3518 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3519 power_rule->max_antenna_gain);
3520 NLA_PUT_U32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3521 power_rule->max_eirp);
3522
3523 nla_nest_end(msg, nl_reg_rule);
3524 }
3525
3526 nla_nest_end(msg, nl_reg_rules);
3527
3528 genlmsg_end(msg, hdr);
3529 err = genlmsg_reply(msg, info);
3530 goto out;
3531
3532nla_put_failure:
3533 genlmsg_cancel(msg, hdr);
3534put_failure:
3535 nlmsg_free(msg);
3536 err = -EMSGSIZE;
3537out:
3538 mutex_unlock(&cfg80211_mutex);
3539 return err;
3540}
3541
3542static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3543{
3544 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3545 struct nlattr *nl_reg_rule;
3546 char *alpha2 = NULL;
3547 int rem_reg_rules = 0, r = 0;
3548 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3549 u8 dfs_region = 0;
3550 struct ieee80211_regdomain *rd = NULL;
3551
3552 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3553 return -EINVAL;
3554
3555 if (!info->attrs[NL80211_ATTR_REG_RULES])
3556 return -EINVAL;
3557
3558 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3559
3560 if (info->attrs[NL80211_ATTR_DFS_REGION])
3561 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3562
3563 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3564 rem_reg_rules) {
3565 num_rules++;
3566 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3567 return -EINVAL;
3568 }
3569
3570 mutex_lock(&cfg80211_mutex);
3571
3572 if (!reg_is_valid_request(alpha2)) {
3573 r = -EINVAL;
3574 goto bad_reg;
3575 }
3576
3577 size_of_regd = sizeof(struct ieee80211_regdomain) +
3578 (num_rules * sizeof(struct ieee80211_reg_rule));
3579
3580 rd = kzalloc(size_of_regd, GFP_KERNEL);
3581 if (!rd) {
3582 r = -ENOMEM;
3583 goto bad_reg;
3584 }
3585
3586 rd->n_reg_rules = num_rules;
3587 rd->alpha2[0] = alpha2[0];
3588 rd->alpha2[1] = alpha2[1];
3589
3590
3591
3592
3593
3594 if (reg_supported_dfs_region(dfs_region))
3595 rd->dfs_region = dfs_region;
3596
3597 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3598 rem_reg_rules) {
3599 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3600 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3601 reg_rule_policy);
3602 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3603 if (r)
3604 goto bad_reg;
3605
3606 rule_idx++;
3607
3608 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3609 r = -EINVAL;
3610 goto bad_reg;
3611 }
3612 }
3613
3614 BUG_ON(rule_idx != num_rules);
3615
3616 r = set_regdom(rd);
3617
3618 mutex_unlock(&cfg80211_mutex);
3619
3620 return r;
3621
3622 bad_reg:
3623 mutex_unlock(&cfg80211_mutex);
3624 kfree(rd);
3625 return r;
3626}
3627
3628static int validate_scan_freqs(struct nlattr *freqs)
3629{
3630 struct nlattr *attr1, *attr2;
3631 int n_channels = 0, tmp1, tmp2;
3632
3633 nla_for_each_nested(attr1, freqs, tmp1) {
3634 n_channels++;
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644 nla_for_each_nested(attr2, freqs, tmp2)
3645 if (attr1 != attr2 &&
3646 nla_get_u32(attr1) == nla_get_u32(attr2))
3647 return 0;
3648 }
3649
3650 return n_channels;
3651}
3652
3653static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
3654{
3655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3656 struct net_device *dev = info->user_ptr[1];
3657 struct cfg80211_scan_request *request;
3658 struct nlattr *attr;
3659 struct wiphy *wiphy;
3660 int err, tmp, n_ssids = 0, n_channels, i;
3661 size_t ie_len;
3662
3663 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3664 return -EINVAL;
3665
3666 wiphy = &rdev->wiphy;
3667
3668 if (!rdev->ops->scan)
3669 return -EOPNOTSUPP;
3670
3671 if (rdev->scan_req)
3672 return -EBUSY;
3673
3674 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3675 n_channels = validate_scan_freqs(
3676 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3677 if (!n_channels)
3678 return -EINVAL;
3679 } else {
3680 enum ieee80211_band band;
3681 n_channels = 0;
3682
3683 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3684 if (wiphy->bands[band])
3685 n_channels += wiphy->bands[band]->n_channels;
3686 }
3687
3688 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3689 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
3690 n_ssids++;
3691
3692 if (n_ssids > wiphy->max_scan_ssids)
3693 return -EINVAL;
3694
3695 if (info->attrs[NL80211_ATTR_IE])
3696 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3697 else
3698 ie_len = 0;
3699
3700 if (ie_len > wiphy->max_scan_ie_len)
3701 return -EINVAL;
3702
3703 request = kzalloc(sizeof(*request)
3704 + sizeof(*request->ssids) * n_ssids
3705 + sizeof(*request->channels) * n_channels
3706 + ie_len, GFP_KERNEL);
3707 if (!request)
3708 return -ENOMEM;
3709
3710 if (n_ssids)
3711 request->ssids = (void *)&request->channels[n_channels];
3712 request->n_ssids = n_ssids;
3713 if (ie_len) {
3714 if (request->ssids)
3715 request->ie = (void *)(request->ssids + n_ssids);
3716 else
3717 request->ie = (void *)(request->channels + n_channels);
3718 }
3719
3720 i = 0;
3721 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3722
3723 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
3724 struct ieee80211_channel *chan;
3725
3726 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3727
3728 if (!chan) {
3729 err = -EINVAL;
3730 goto out_free;
3731 }
3732
3733
3734 if (chan->flags & IEEE80211_CHAN_DISABLED)
3735 continue;
3736
3737 request->channels[i] = chan;
3738 i++;
3739 }
3740 } else {
3741 enum ieee80211_band band;
3742
3743
3744 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3745 int j;
3746 if (!wiphy->bands[band])
3747 continue;
3748 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3749 struct ieee80211_channel *chan;
3750
3751 chan = &wiphy->bands[band]->channels[j];
3752
3753 if (chan->flags & IEEE80211_CHAN_DISABLED)
3754 continue;
3755
3756 request->channels[i] = chan;
3757 i++;
3758 }
3759 }
3760 }
3761
3762 if (!i) {
3763 err = -EINVAL;
3764 goto out_free;
3765 }
3766
3767 request->n_channels = i;
3768
3769 i = 0;
3770 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3771 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
3772 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3773 err = -EINVAL;
3774 goto out_free;
3775 }
3776 request->ssids[i].ssid_len = nla_len(attr);
3777 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
3778 i++;
3779 }
3780 }
3781
3782 if (info->attrs[NL80211_ATTR_IE]) {
3783 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3784 memcpy((void *)request->ie,
3785 nla_data(info->attrs[NL80211_ATTR_IE]),
3786 request->ie_len);
3787 }
3788
3789 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3790 if (wiphy->bands[i])
3791 request->rates[i] =
3792 (1 << wiphy->bands[i]->n_bitrates) - 1;
3793
3794 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
3795 nla_for_each_nested(attr,
3796 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
3797 tmp) {
3798 enum ieee80211_band band = nla_type(attr);
3799
3800 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
3801 err = -EINVAL;
3802 goto out_free;
3803 }
3804 err = ieee80211_get_ratemask(wiphy->bands[band],
3805 nla_data(attr),
3806 nla_len(attr),
3807 &request->rates[band]);
3808 if (err)
3809 goto out_free;
3810 }
3811 }
3812
3813 request->no_cck =
3814 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
3815
3816 request->dev = dev;
3817 request->wiphy = &rdev->wiphy;
3818
3819 rdev->scan_req = request;
3820 err = rdev->ops->scan(&rdev->wiphy, dev, request);
3821
3822 if (!err) {
3823 nl80211_send_scan_start(rdev, dev);
3824 dev_hold(dev);
3825 } else {
3826 out_free:
3827 rdev->scan_req = NULL;
3828 kfree(request);
3829 }
3830
3831 return err;
3832}
3833
3834static int nl80211_start_sched_scan(struct sk_buff *skb,
3835 struct genl_info *info)
3836{
3837 struct cfg80211_sched_scan_request *request;
3838 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3839 struct net_device *dev = info->user_ptr[1];
3840 struct nlattr *attr;
3841 struct wiphy *wiphy;
3842 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
3843 u32 interval;
3844 enum ieee80211_band band;
3845 size_t ie_len;
3846 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
3847
3848 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
3849 !rdev->ops->sched_scan_start)
3850 return -EOPNOTSUPP;
3851
3852 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
3853 return -EINVAL;
3854
3855 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
3856 return -EINVAL;
3857
3858 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
3859 if (interval == 0)
3860 return -EINVAL;
3861
3862 wiphy = &rdev->wiphy;
3863
3864 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3865 n_channels = validate_scan_freqs(
3866 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
3867 if (!n_channels)
3868 return -EINVAL;
3869 } else {
3870 n_channels = 0;
3871
3872 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
3873 if (wiphy->bands[band])
3874 n_channels += wiphy->bands[band]->n_channels;
3875 }
3876
3877 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
3878 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3879 tmp)
3880 n_ssids++;
3881
3882 if (n_ssids > wiphy->max_sched_scan_ssids)
3883 return -EINVAL;
3884
3885 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
3886 nla_for_each_nested(attr,
3887 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
3888 tmp)
3889 n_match_sets++;
3890
3891 if (n_match_sets > wiphy->max_match_sets)
3892 return -EINVAL;
3893
3894 if (info->attrs[NL80211_ATTR_IE])
3895 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
3896 else
3897 ie_len = 0;
3898
3899 if (ie_len > wiphy->max_sched_scan_ie_len)
3900 return -EINVAL;
3901
3902 mutex_lock(&rdev->sched_scan_mtx);
3903
3904 if (rdev->sched_scan_req) {
3905 err = -EINPROGRESS;
3906 goto out;
3907 }
3908
3909 request = kzalloc(sizeof(*request)
3910 + sizeof(*request->ssids) * n_ssids
3911 + sizeof(*request->match_sets) * n_match_sets
3912 + sizeof(*request->channels) * n_channels
3913 + ie_len, GFP_KERNEL);
3914 if (!request) {
3915 err = -ENOMEM;
3916 goto out;
3917 }
3918
3919 if (n_ssids)
3920 request->ssids = (void *)&request->channels[n_channels];
3921 request->n_ssids = n_ssids;
3922 if (ie_len) {
3923 if (request->ssids)
3924 request->ie = (void *)(request->ssids + n_ssids);
3925 else
3926 request->ie = (void *)(request->channels + n_channels);
3927 }
3928
3929 if (n_match_sets) {
3930 if (request->ie)
3931 request->match_sets = (void *)(request->ie + ie_len);
3932 else if (request->ssids)
3933 request->match_sets =
3934 (void *)(request->ssids + n_ssids);
3935 else
3936 request->match_sets =
3937 (void *)(request->channels + n_channels);
3938 }
3939 request->n_match_sets = n_match_sets;
3940
3941 i = 0;
3942 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
3943
3944 nla_for_each_nested(attr,
3945 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
3946 tmp) {
3947 struct ieee80211_channel *chan;
3948
3949 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
3950
3951 if (!chan) {
3952 err = -EINVAL;
3953 goto out_free;
3954 }
3955
3956
3957 if (chan->flags & IEEE80211_CHAN_DISABLED)
3958 continue;
3959
3960 request->channels[i] = chan;
3961 i++;
3962 }
3963 } else {
3964
3965 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
3966 int j;
3967 if (!wiphy->bands[band])
3968 continue;
3969 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
3970 struct ieee80211_channel *chan;
3971
3972 chan = &wiphy->bands[band]->channels[j];
3973
3974 if (chan->flags & IEEE80211_CHAN_DISABLED)
3975 continue;
3976
3977 request->channels[i] = chan;
3978 i++;
3979 }
3980 }
3981 }
3982
3983 if (!i) {
3984 err = -EINVAL;
3985 goto out_free;
3986 }
3987
3988 request->n_channels = i;
3989
3990 i = 0;
3991 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
3992 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
3993 tmp) {
3994 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
3995 err = -EINVAL;
3996 goto out_free;
3997 }
3998 request->ssids[i].ssid_len = nla_len(attr);
3999 memcpy(request->ssids[i].ssid, nla_data(attr),
4000 nla_len(attr));
4001 i++;
4002 }
4003 }
4004
4005 i = 0;
4006 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4007 nla_for_each_nested(attr,
4008 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4009 tmp) {
4010 struct nlattr *ssid;
4011
4012 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4013 nla_data(attr), nla_len(attr),
4014 nl80211_match_policy);
4015 ssid = tb[NL80211_ATTR_SCHED_SCAN_MATCH_SSID];
4016 if (ssid) {
4017 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4018 err = -EINVAL;
4019 goto out_free;
4020 }
4021 memcpy(request->match_sets[i].ssid.ssid,
4022 nla_data(ssid), nla_len(ssid));
4023 request->match_sets[i].ssid.ssid_len =
4024 nla_len(ssid);
4025 }
4026 i++;
4027 }
4028 }
4029
4030 if (info->attrs[NL80211_ATTR_IE]) {
4031 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4032 memcpy((void *)request->ie,
4033 nla_data(info->attrs[NL80211_ATTR_IE]),
4034 request->ie_len);
4035 }
4036
4037 request->dev = dev;
4038 request->wiphy = &rdev->wiphy;
4039 request->interval = interval;
4040
4041 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4042 if (!err) {
4043 rdev->sched_scan_req = request;
4044 nl80211_send_sched_scan(rdev, dev,
4045 NL80211_CMD_START_SCHED_SCAN);
4046 goto out;
4047 }
4048
4049out_free:
4050 kfree(request);
4051out:
4052 mutex_unlock(&rdev->sched_scan_mtx);
4053 return err;
4054}
4055
4056static int nl80211_stop_sched_scan(struct sk_buff *skb,
4057 struct genl_info *info)
4058{
4059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4060 int err;
4061
4062 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4063 !rdev->ops->sched_scan_stop)
4064 return -EOPNOTSUPP;
4065
4066 mutex_lock(&rdev->sched_scan_mtx);
4067 err = __cfg80211_stop_sched_scan(rdev, false);
4068 mutex_unlock(&rdev->sched_scan_mtx);
4069
4070 return err;
4071}
4072
4073static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4074 u32 seq, int flags,
4075 struct cfg80211_registered_device *rdev,
4076 struct wireless_dev *wdev,
4077 struct cfg80211_internal_bss *intbss)
4078{
4079 struct cfg80211_bss *res = &intbss->pub;
4080 void *hdr;
4081 struct nlattr *bss;
4082 int i;
4083
4084 ASSERT_WDEV_LOCK(wdev);
4085
4086 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4087 NL80211_CMD_NEW_SCAN_RESULTS);
4088 if (!hdr)
4089 return -1;
4090
4091 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4092
4093 NLA_PUT_U32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation);
4094 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
4095
4096 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4097 if (!bss)
4098 goto nla_put_failure;
4099 if (!is_zero_ether_addr(res->bssid))
4100 NLA_PUT(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid);
4101 if (res->information_elements && res->len_information_elements)
4102 NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4103 res->len_information_elements,
4104 res->information_elements);
4105 if (res->beacon_ies && res->len_beacon_ies &&
4106 res->beacon_ies != res->information_elements)
4107 NLA_PUT(msg, NL80211_BSS_BEACON_IES,
4108 res->len_beacon_ies, res->beacon_ies);
4109 if (res->tsf)
4110 NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
4111 if (res->beacon_interval)
4112 NLA_PUT_U16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval);
4113 NLA_PUT_U16(msg, NL80211_BSS_CAPABILITY, res->capability);
4114 NLA_PUT_U32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq);
4115 NLA_PUT_U32(msg, NL80211_BSS_SEEN_MS_AGO,
4116 jiffies_to_msecs(jiffies - intbss->ts));
4117
4118 switch (rdev->wiphy.signal_type) {
4119 case CFG80211_SIGNAL_TYPE_MBM:
4120 NLA_PUT_U32(msg, NL80211_BSS_SIGNAL_MBM, res->signal);
4121 break;
4122 case CFG80211_SIGNAL_TYPE_UNSPEC:
4123 NLA_PUT_U8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal);
4124 break;
4125 default:
4126 break;
4127 }
4128
4129 switch (wdev->iftype) {
4130 case NL80211_IFTYPE_P2P_CLIENT:
4131 case NL80211_IFTYPE_STATION:
4132 if (intbss == wdev->current_bss)
4133 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4134 NL80211_BSS_STATUS_ASSOCIATED);
4135 else for (i = 0; i < MAX_AUTH_BSSES; i++) {
4136 if (intbss != wdev->auth_bsses[i])
4137 continue;
4138 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4139 NL80211_BSS_STATUS_AUTHENTICATED);
4140 break;
4141 }
4142 break;
4143 case NL80211_IFTYPE_ADHOC:
4144 if (intbss == wdev->current_bss)
4145 NLA_PUT_U32(msg, NL80211_BSS_STATUS,
4146 NL80211_BSS_STATUS_IBSS_JOINED);
4147 break;
4148 default:
4149 break;
4150 }
4151
4152 nla_nest_end(msg, bss);
4153
4154 return genlmsg_end(msg, hdr);
4155
4156 nla_put_failure:
4157 genlmsg_cancel(msg, hdr);
4158 return -EMSGSIZE;
4159}
4160
4161static int nl80211_dump_scan(struct sk_buff *skb,
4162 struct netlink_callback *cb)
4163{
4164 struct cfg80211_registered_device *rdev;
4165 struct net_device *dev;
4166 struct cfg80211_internal_bss *scan;
4167 struct wireless_dev *wdev;
4168 int start = cb->args[1], idx = 0;
4169 int err;
4170
4171 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4172 if (err)
4173 return err;
4174
4175 wdev = dev->ieee80211_ptr;
4176
4177 wdev_lock(wdev);
4178 spin_lock_bh(&rdev->bss_lock);
4179 cfg80211_bss_expire(rdev);
4180
4181 cb->seq = rdev->bss_generation;
4182
4183 list_for_each_entry(scan, &rdev->bss_list, list) {
4184 if (++idx <= start)
4185 continue;
4186 if (nl80211_send_bss(skb, cb,
4187 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4188 rdev, wdev, scan) < 0) {
4189 idx--;
4190 break;
4191 }
4192 }
4193
4194 spin_unlock_bh(&rdev->bss_lock);
4195 wdev_unlock(wdev);
4196
4197 cb->args[1] = idx;
4198 nl80211_finish_netdev_dump(rdev);
4199
4200 return skb->len;
4201}
4202
4203static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4204 int flags, struct net_device *dev,
4205 struct survey_info *survey)
4206{
4207 void *hdr;
4208 struct nlattr *infoattr;
4209
4210 hdr = nl80211hdr_put(msg, pid, seq, flags,
4211 NL80211_CMD_NEW_SURVEY_RESULTS);
4212 if (!hdr)
4213 return -ENOMEM;
4214
4215 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
4216
4217 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4218 if (!infoattr)
4219 goto nla_put_failure;
4220
4221 NLA_PUT_U32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4222 survey->channel->center_freq);
4223 if (survey->filled & SURVEY_INFO_NOISE_DBM)
4224 NLA_PUT_U8(msg, NL80211_SURVEY_INFO_NOISE,
4225 survey->noise);
4226 if (survey->filled & SURVEY_INFO_IN_USE)
4227 NLA_PUT_FLAG(msg, NL80211_SURVEY_INFO_IN_USE);
4228 if (survey->filled & SURVEY_INFO_CHANNEL_TIME)
4229 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4230 survey->channel_time);
4231 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
4232 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4233 survey->channel_time_busy);
4234 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
4235 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4236 survey->channel_time_ext_busy);
4237 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_RX)
4238 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4239 survey->channel_time_rx);
4240 if (survey->filled & SURVEY_INFO_CHANNEL_TIME_TX)
4241 NLA_PUT_U64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4242 survey->channel_time_tx);
4243
4244 nla_nest_end(msg, infoattr);
4245
4246 return genlmsg_end(msg, hdr);
4247
4248 nla_put_failure:
4249 genlmsg_cancel(msg, hdr);
4250 return -EMSGSIZE;
4251}
4252
4253static int nl80211_dump_survey(struct sk_buff *skb,
4254 struct netlink_callback *cb)
4255{
4256 struct survey_info survey;
4257 struct cfg80211_registered_device *dev;
4258 struct net_device *netdev;
4259 int survey_idx = cb->args[1];
4260 int res;
4261
4262 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4263 if (res)
4264 return res;
4265
4266 if (!dev->ops->dump_survey) {
4267 res = -EOPNOTSUPP;
4268 goto out_err;
4269 }
4270
4271 while (1) {
4272 struct ieee80211_channel *chan;
4273
4274 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4275 &survey);
4276 if (res == -ENOENT)
4277 break;
4278 if (res)
4279 goto out_err;
4280
4281
4282 if (!survey.channel) {
4283 res = -EINVAL;
4284 goto out;
4285 }
4286
4287 chan = ieee80211_get_channel(&dev->wiphy,
4288 survey.channel->center_freq);
4289 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4290 survey_idx++;
4291 continue;
4292 }
4293
4294 if (nl80211_send_survey(skb,
4295 NETLINK_CB(cb->skb).pid,
4296 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4297 netdev,
4298 &survey) < 0)
4299 goto out;
4300 survey_idx++;
4301 }
4302
4303 out:
4304 cb->args[1] = survey_idx;
4305 res = skb->len;
4306 out_err:
4307 nl80211_finish_netdev_dump(dev);
4308 return res;
4309}
4310
4311static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4312{
4313 return auth_type <= NL80211_AUTHTYPE_MAX;
4314}
4315
4316static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4317{
4318 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4319 NL80211_WPA_VERSION_2));
4320}
4321
4322static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4323{
4324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4325 struct net_device *dev = info->user_ptr[1];
4326 struct ieee80211_channel *chan;
4327 const u8 *bssid, *ssid, *ie = NULL;
4328 int err, ssid_len, ie_len = 0;
4329 enum nl80211_auth_type auth_type;
4330 struct key_parse key;
4331 bool local_state_change;
4332
4333 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4334 return -EINVAL;
4335
4336 if (!info->attrs[NL80211_ATTR_MAC])
4337 return -EINVAL;
4338
4339 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4340 return -EINVAL;
4341
4342 if (!info->attrs[NL80211_ATTR_SSID])
4343 return -EINVAL;
4344
4345 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4346 return -EINVAL;
4347
4348 err = nl80211_parse_key(info, &key);
4349 if (err)
4350 return err;
4351
4352 if (key.idx >= 0) {
4353 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4354 return -EINVAL;
4355 if (!key.p.key || !key.p.key_len)
4356 return -EINVAL;
4357 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4358 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4359 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4360 key.p.key_len != WLAN_KEY_LEN_WEP104))
4361 return -EINVAL;
4362 if (key.idx > 4)
4363 return -EINVAL;
4364 } else {
4365 key.p.key_len = 0;
4366 key.p.key = NULL;
4367 }
4368
4369 if (key.idx >= 0) {
4370 int i;
4371 bool ok = false;
4372 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4373 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4374 ok = true;
4375 break;
4376 }
4377 }
4378 if (!ok)
4379 return -EINVAL;
4380 }
4381
4382 if (!rdev->ops->auth)
4383 return -EOPNOTSUPP;
4384
4385 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4386 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4387 return -EOPNOTSUPP;
4388
4389 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4390 chan = ieee80211_get_channel(&rdev->wiphy,
4391 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4392 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4393 return -EINVAL;
4394
4395 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4396 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4397
4398 if (info->attrs[NL80211_ATTR_IE]) {
4399 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4400 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4401 }
4402
4403 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4404 if (!nl80211_valid_auth_type(auth_type))
4405 return -EINVAL;
4406
4407 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4408
4409 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4410 ssid, ssid_len, ie, ie_len,
4411 key.p.key, key.p.key_len, key.idx,
4412 local_state_change);
4413}
4414
4415static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4416 struct genl_info *info,
4417 struct cfg80211_crypto_settings *settings,
4418 int cipher_limit)
4419{
4420 memset(settings, 0, sizeof(*settings));
4421
4422 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4423
4424 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4425 u16 proto;
4426 proto = nla_get_u16(
4427 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4428 settings->control_port_ethertype = cpu_to_be16(proto);
4429 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4430 proto != ETH_P_PAE)
4431 return -EINVAL;
4432 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4433 settings->control_port_no_encrypt = true;
4434 } else
4435 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4436
4437 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4438 void *data;
4439 int len, i;
4440
4441 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4442 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4443 settings->n_ciphers_pairwise = len / sizeof(u32);
4444
4445 if (len % sizeof(u32))
4446 return -EINVAL;
4447
4448 if (settings->n_ciphers_pairwise > cipher_limit)
4449 return -EINVAL;
4450
4451 memcpy(settings->ciphers_pairwise, data, len);
4452
4453 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4454 if (!cfg80211_supported_cipher_suite(
4455 &rdev->wiphy,
4456 settings->ciphers_pairwise[i]))
4457 return -EINVAL;
4458 }
4459
4460 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4461 settings->cipher_group =
4462 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4463 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4464 settings->cipher_group))
4465 return -EINVAL;
4466 }
4467
4468 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4469 settings->wpa_versions =
4470 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4471 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4472 return -EINVAL;
4473 }
4474
4475 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4476 void *data;
4477 int len;
4478
4479 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4480 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4481 settings->n_akm_suites = len / sizeof(u32);
4482
4483 if (len % sizeof(u32))
4484 return -EINVAL;
4485
4486 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4487 return -EINVAL;
4488
4489 memcpy(settings->akm_suites, data, len);
4490 }
4491
4492 return 0;
4493}
4494
4495static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4496{
4497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4498 struct net_device *dev = info->user_ptr[1];
4499 struct cfg80211_crypto_settings crypto;
4500 struct ieee80211_channel *chan;
4501 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4502 int err, ssid_len, ie_len = 0;
4503 bool use_mfp = false;
4504 u32 flags = 0;
4505 struct ieee80211_ht_cap *ht_capa = NULL;
4506 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4507
4508 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4509 return -EINVAL;
4510
4511 if (!info->attrs[NL80211_ATTR_MAC] ||
4512 !info->attrs[NL80211_ATTR_SSID] ||
4513 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4514 return -EINVAL;
4515
4516 if (!rdev->ops->assoc)
4517 return -EOPNOTSUPP;
4518
4519 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4520 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4521 return -EOPNOTSUPP;
4522
4523 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4524
4525 chan = ieee80211_get_channel(&rdev->wiphy,
4526 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4527 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4528 return -EINVAL;
4529
4530 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4531 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4532
4533 if (info->attrs[NL80211_ATTR_IE]) {
4534 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4535 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4536 }
4537
4538 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4539 enum nl80211_mfp mfp =
4540 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4541 if (mfp == NL80211_MFP_REQUIRED)
4542 use_mfp = true;
4543 else if (mfp != NL80211_MFP_NO)
4544 return -EINVAL;
4545 }
4546
4547 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4548 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4549
4550 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4551 flags |= ASSOC_REQ_DISABLE_HT;
4552
4553 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4554 ht_capa_mask =
4555 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4556
4557 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4558 if (!ht_capa_mask)
4559 return -EINVAL;
4560 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4561 }
4562
4563 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4564 if (!err)
4565 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4566 ssid, ssid_len, ie, ie_len, use_mfp,
4567 &crypto, flags, ht_capa,
4568 ht_capa_mask);
4569
4570 return err;
4571}
4572
4573static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4574{
4575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4576 struct net_device *dev = info->user_ptr[1];
4577 const u8 *ie = NULL, *bssid;
4578 int ie_len = 0;
4579 u16 reason_code;
4580 bool local_state_change;
4581
4582 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4583 return -EINVAL;
4584
4585 if (!info->attrs[NL80211_ATTR_MAC])
4586 return -EINVAL;
4587
4588 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4589 return -EINVAL;
4590
4591 if (!rdev->ops->deauth)
4592 return -EOPNOTSUPP;
4593
4594 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4595 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4596 return -EOPNOTSUPP;
4597
4598 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4599
4600 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4601 if (reason_code == 0) {
4602
4603 return -EINVAL;
4604 }
4605
4606 if (info->attrs[NL80211_ATTR_IE]) {
4607 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4608 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4609 }
4610
4611 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4612
4613 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4614 local_state_change);
4615}
4616
4617static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4618{
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct net_device *dev = info->user_ptr[1];
4621 const u8 *ie = NULL, *bssid;
4622 int ie_len = 0;
4623 u16 reason_code;
4624 bool local_state_change;
4625
4626 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4627 return -EINVAL;
4628
4629 if (!info->attrs[NL80211_ATTR_MAC])
4630 return -EINVAL;
4631
4632 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4633 return -EINVAL;
4634
4635 if (!rdev->ops->disassoc)
4636 return -EOPNOTSUPP;
4637
4638 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4639 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4640 return -EOPNOTSUPP;
4641
4642 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4643
4644 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4645 if (reason_code == 0) {
4646
4647 return -EINVAL;
4648 }
4649
4650 if (info->attrs[NL80211_ATTR_IE]) {
4651 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4652 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4653 }
4654
4655 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4656
4657 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
4658 local_state_change);
4659}
4660
4661static bool
4662nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
4663 int mcast_rate[IEEE80211_NUM_BANDS],
4664 int rateval)
4665{
4666 struct wiphy *wiphy = &rdev->wiphy;
4667 bool found = false;
4668 int band, i;
4669
4670 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4671 struct ieee80211_supported_band *sband;
4672
4673 sband = wiphy->bands[band];
4674 if (!sband)
4675 continue;
4676
4677 for (i = 0; i < sband->n_bitrates; i++) {
4678 if (sband->bitrates[i].bitrate == rateval) {
4679 mcast_rate[band] = i + 1;
4680 found = true;
4681 break;
4682 }
4683 }
4684 }
4685
4686 return found;
4687}
4688
4689static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
4690{
4691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4692 struct net_device *dev = info->user_ptr[1];
4693 struct cfg80211_ibss_params ibss;
4694 struct wiphy *wiphy;
4695 struct cfg80211_cached_keys *connkeys = NULL;
4696 int err;
4697
4698 memset(&ibss, 0, sizeof(ibss));
4699
4700 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4701 return -EINVAL;
4702
4703 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
4704 !info->attrs[NL80211_ATTR_SSID] ||
4705 !nla_len(info->attrs[NL80211_ATTR_SSID]))
4706 return -EINVAL;
4707
4708 ibss.beacon_interval = 100;
4709
4710 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
4711 ibss.beacon_interval =
4712 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4713 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
4714 return -EINVAL;
4715 }
4716
4717 if (!rdev->ops->join_ibss)
4718 return -EOPNOTSUPP;
4719
4720 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4721 return -EOPNOTSUPP;
4722
4723 wiphy = &rdev->wiphy;
4724
4725 if (info->attrs[NL80211_ATTR_MAC]) {
4726 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4727
4728 if (!is_valid_ether_addr(ibss.bssid))
4729 return -EINVAL;
4730 }
4731 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4732 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4733
4734 if (info->attrs[NL80211_ATTR_IE]) {
4735 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4736 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4737 }
4738
4739 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
4740 enum nl80211_channel_type channel_type;
4741
4742 channel_type = nla_get_u32(
4743 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
4744 if (channel_type != NL80211_CHAN_NO_HT &&
4745 channel_type != NL80211_CHAN_HT20 &&
4746 channel_type != NL80211_CHAN_HT40MINUS &&
4747 channel_type != NL80211_CHAN_HT40PLUS)
4748 return -EINVAL;
4749
4750 if (channel_type != NL80211_CHAN_NO_HT &&
4751 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
4752 return -EINVAL;
4753
4754 ibss.channel_type = channel_type;
4755 } else {
4756 ibss.channel_type = NL80211_CHAN_NO_HT;
4757 }
4758
4759 ibss.channel = rdev_freq_to_chan(rdev,
4760 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
4761 ibss.channel_type);
4762 if (!ibss.channel ||
4763 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
4764 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
4765 return -EINVAL;
4766
4767
4768 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
4769 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
4770 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
4771 ibss.channel_type))
4772 return -EINVAL;
4773
4774 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
4775 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4776
4777 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4778 u8 *rates =
4779 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4780 int n_rates =
4781 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4782 struct ieee80211_supported_band *sband =
4783 wiphy->bands[ibss.channel->band];
4784 int err;
4785
4786 err = ieee80211_get_ratemask(sband, rates, n_rates,
4787 &ibss.basic_rates);
4788 if (err)
4789 return err;
4790 }
4791
4792 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
4793 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
4794 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
4795 return -EINVAL;
4796
4797 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
4798 connkeys = nl80211_parse_connkeys(rdev,
4799 info->attrs[NL80211_ATTR_KEYS]);
4800 if (IS_ERR(connkeys))
4801 return PTR_ERR(connkeys);
4802 }
4803
4804 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
4805 if (err)
4806 kfree(connkeys);
4807 return err;
4808}
4809
4810static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
4811{
4812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4813 struct net_device *dev = info->user_ptr[1];
4814
4815 if (!rdev->ops->leave_ibss)
4816 return -EOPNOTSUPP;
4817
4818 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
4819 return -EOPNOTSUPP;
4820
4821 return cfg80211_leave_ibss(rdev, dev, false);
4822}
4823
4824#ifdef CONFIG_NL80211_TESTMODE
4825static struct genl_multicast_group nl80211_testmode_mcgrp = {
4826 .name = "testmode",
4827};
4828
4829static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
4830{
4831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4832 int err;
4833
4834 if (!info->attrs[NL80211_ATTR_TESTDATA])
4835 return -EINVAL;
4836
4837 err = -EOPNOTSUPP;
4838 if (rdev->ops->testmode_cmd) {
4839 rdev->testmode_info = info;
4840 err = rdev->ops->testmode_cmd(&rdev->wiphy,
4841 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
4842 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
4843 rdev->testmode_info = NULL;
4844 }
4845
4846 return err;
4847}
4848
4849static int nl80211_testmode_dump(struct sk_buff *skb,
4850 struct netlink_callback *cb)
4851{
4852 struct cfg80211_registered_device *rdev;
4853 int err;
4854 long phy_idx;
4855 void *data = NULL;
4856 int data_len = 0;
4857
4858 if (cb->args[0]) {
4859
4860
4861
4862
4863 phy_idx = cb->args[0] - 1;
4864 } else {
4865 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
4866 nl80211_fam.attrbuf, nl80211_fam.maxattr,
4867 nl80211_policy);
4868 if (err)
4869 return err;
4870 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
4871 phy_idx = nla_get_u32(
4872 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
4873 } else {
4874 struct net_device *netdev;
4875
4876 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
4877 nl80211_fam.attrbuf,
4878 &rdev, &netdev);
4879 if (err)
4880 return err;
4881 dev_put(netdev);
4882 phy_idx = rdev->wiphy_idx;
4883 cfg80211_unlock_rdev(rdev);
4884 }
4885 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
4886 cb->args[1] =
4887 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
4888 }
4889
4890 if (cb->args[1]) {
4891 data = nla_data((void *)cb->args[1]);
4892 data_len = nla_len((void *)cb->args[1]);
4893 }
4894
4895 mutex_lock(&cfg80211_mutex);
4896 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
4897 if (!rdev) {
4898 mutex_unlock(&cfg80211_mutex);
4899 return -ENOENT;
4900 }
4901 cfg80211_lock_rdev(rdev);
4902 mutex_unlock(&cfg80211_mutex);
4903
4904 if (!rdev->ops->testmode_dump) {
4905 err = -EOPNOTSUPP;
4906 goto out_err;
4907 }
4908
4909 while (1) {
4910 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
4911 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4912 NL80211_CMD_TESTMODE);
4913 struct nlattr *tmdata;
