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nl80211: change __cfg80211_rdev_from_info
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25
26 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type);
27 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
28 struct genl_info *info,
29 struct cfg80211_crypto_settings *settings,
30 int cipher_limit);
31
32 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
33 struct genl_info *info);
34 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36
37 /* the netlink family */
38 static struct genl_family nl80211_fam = {
39 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
40 .name = "nl80211", /* have users key off the name instead */
41 .hdrsize = 0, /* no private header */
42 .version = 1, /* no particular meaning now */
43 .maxattr = NL80211_ATTR_MAX,
44 .netnsok = true,
45 .pre_doit = nl80211_pre_doit,
46 .post_doit = nl80211_post_doit,
47 };
48
49 /* internal helper: get rdev and dev */
50 static int get_rdev_dev_by_ifindex(struct net *netns, struct nlattr **attrs,
51 struct cfg80211_registered_device **rdev,
52 struct net_device **dev)
53 {
54 int ifindex;
55
56 if (!attrs[NL80211_ATTR_IFINDEX])
57 return -EINVAL;
58
59 ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
60 *dev = dev_get_by_index(netns, ifindex);
61 if (!*dev)
62 return -ENODEV;
63
64 *rdev = cfg80211_get_dev_from_ifindex(netns, ifindex);
65 if (IS_ERR(*rdev)) {
66 dev_put(*dev);
67 return PTR_ERR(*rdev);
68 }
69
70 return 0;
71 }
72
73 static struct cfg80211_registered_device *
74 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev = NULL, *tmp;
77 struct net_device *netdev;
78
79 assert_cfg80211_lock();
80
81 if (!attrs[NL80211_ATTR_WIPHY] &&
82 !attrs[NL80211_ATTR_IFINDEX])
83 return ERR_PTR(-EINVAL);
84
85 if (attrs[NL80211_ATTR_WIPHY])
86 rdev = cfg80211_rdev_by_wiphy_idx(
87 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
88
89 if (attrs[NL80211_ATTR_IFINDEX]) {
90 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 netdev = dev_get_by_index(netns, ifindex);
92 if (netdev) {
93 if (netdev->ieee80211_ptr)
94 tmp = wiphy_to_dev(
95 netdev->ieee80211_ptr->wiphy);
96 else
97 tmp = NULL;
98
99 dev_put(netdev);
100
101 /* not wireless device -- return error */
102 if (!tmp)
103 return ERR_PTR(-EINVAL);
104
105 /* mismatch -- return error */
106 if (rdev && tmp != rdev)
107 return ERR_PTR(-EINVAL);
108
109 rdev = tmp;
110 }
111 }
112
113 if (!rdev)
114 return ERR_PTR(-ENODEV);
115
116 if (netns != wiphy_net(&rdev->wiphy))
117 return ERR_PTR(-ENODEV);
118
119 return rdev;
120 }
121
122 /*
123 * This function returns a pointer to the driver
124 * that the genl_info item that is passed refers to.
125 * If successful, it returns non-NULL and also locks
126 * the driver's mutex!
127 *
128 * This means that you need to call cfg80211_unlock_rdev()
129 * before being allowed to acquire &cfg80211_mutex!
130 *
131 * This is necessary because we need to lock the global
132 * mutex to get an item off the list safely, and then
133 * we lock the rdev mutex so it doesn't go away under us.
134 *
135 * We don't want to keep cfg80211_mutex locked
136 * for all the time in order to allow requests on
137 * other interfaces to go through at the same time.
138 *
139 * The result of this can be a PTR_ERR and hence must
140 * be checked with IS_ERR() for errors.
141 */
142 static struct cfg80211_registered_device *
143 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
144 {
145 struct cfg80211_registered_device *rdev;
146
147 mutex_lock(&cfg80211_mutex);
148 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
149
150 /* if it is not an error we grab the lock on
151 * it to assure it won't be going away while
152 * we operate on it */
153 if (!IS_ERR(rdev))
154 mutex_lock(&rdev->mtx);
155
156 mutex_unlock(&cfg80211_mutex);
157
158 return rdev;
159 }
160
161 /* policy for the attributes */
162 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
163 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
164 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
165 .len = 20-1 },
166 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
167 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
168 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
169 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
170 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
171 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
172 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
173 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
174
175 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
176 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
177 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
178
179 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
180 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
181
182 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
183 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
184 .len = WLAN_MAX_KEY_LEN },
185 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
186 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
187 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
188 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
189 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
190
191 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
192 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
193 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
194 .len = IEEE80211_MAX_DATA_LEN },
195 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
196 .len = IEEE80211_MAX_DATA_LEN },
197 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
198 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
199 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
200 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
201 .len = NL80211_MAX_SUPP_RATES },
202 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
203 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
204 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
205 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
206 .len = IEEE80211_MAX_MESH_ID_LEN },
207 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
208
209 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
210 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
211
212 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
213 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
214 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
215 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
216 .len = NL80211_MAX_SUPP_RATES },
217 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
218
219 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
220 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
221
222 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
223
224 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
225 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
226 .len = IEEE80211_MAX_DATA_LEN },
227 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
228 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
229
230 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
231 .len = IEEE80211_MAX_SSID_LEN },
232 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
233 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
234 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
235 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
236 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
237 [NL80211_ATTR_STA_FLAGS2] = {
238 .len = sizeof(struct nl80211_sta_flag_update),
239 },
240 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
241 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
242 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
243 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
244 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
245 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
246 [NL80211_ATTR_PID] = { .type = NLA_U32 },
247 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
248 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
249 .len = WLAN_PMKID_LEN },
250 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
251 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
252 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
253 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_DATA_LEN },
255 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
256 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
257 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
258 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
259 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
260 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
261 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
262 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
263 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
264 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
265 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
266 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
267 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
268 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
269 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
270 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
271 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
272 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
273 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
274 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
275 .len = IEEE80211_MAX_DATA_LEN },
276 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
277 .len = IEEE80211_MAX_DATA_LEN },
278 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
279 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
280 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
281 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
282 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
283 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
284 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
285 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
286 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
287 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
288 .len = IEEE80211_MAX_DATA_LEN },
289 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
290 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
291 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
292 .len = NL80211_HT_CAPABILITY_LEN
293 },
294 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
295 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
296 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
297 };
298
299 /* policy for the key attributes */
300 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
301 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
302 [NL80211_KEY_IDX] = { .type = NLA_U8 },
303 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
304 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
305 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
306 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
307 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
308 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
309 };
310
311 /* policy for the key default flags */
312 static const struct nla_policy
313 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
314 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
315 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
316 };
317
318 /* policy for WoWLAN attributes */
319 static const struct nla_policy
320 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
321 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
322 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
323 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
324 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
325 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
326 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
327 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
328 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
329 };
330
331 /* policy for GTK rekey offload attributes */
332 static const struct nla_policy
333 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
334 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
335 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
336 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
337 };
338
339 static const struct nla_policy
340 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
341 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_SSID_LEN },
343 };
344
345 /* ifidx get helper */
346 static int nl80211_get_ifidx(struct netlink_callback *cb)
347 {
348 int res;
349
350 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
351 nl80211_fam.attrbuf, nl80211_fam.maxattr,
352 nl80211_policy);
353 if (res)
354 return res;
355
356 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
357 return -EINVAL;
358
359 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
360 if (!res)
361 return -EINVAL;
362 return res;
363 }
364
365 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
366 struct netlink_callback *cb,
367 struct cfg80211_registered_device **rdev,
368 struct net_device **dev)
369 {
370 int ifidx = cb->args[0];
371 int err;
372
373 if (!ifidx)
374 ifidx = nl80211_get_ifidx(cb);
375 if (ifidx < 0)
376 return ifidx;
377
378 cb->args[0] = ifidx;
379
380 rtnl_lock();
381
382 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
383 if (!*dev) {
384 err = -ENODEV;
385 goto out_rtnl;
386 }
387
388 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
389 if (IS_ERR(*rdev)) {
390 err = PTR_ERR(*rdev);
391 goto out_rtnl;
392 }
393
394 return 0;
395 out_rtnl:
396 rtnl_unlock();
397 return err;
398 }
399
400 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
401 {
402 cfg80211_unlock_rdev(rdev);
403 rtnl_unlock();
404 }
405
406 /* IE validation */
407 static bool is_valid_ie_attr(const struct nlattr *attr)
408 {
409 const u8 *pos;
410 int len;
411
412 if (!attr)
413 return true;
414
415 pos = nla_data(attr);
416 len = nla_len(attr);
417
418 while (len) {
419 u8 elemlen;
420
421 if (len < 2)
422 return false;
423 len -= 2;
424
425 elemlen = pos[1];
426 if (elemlen > len)
427 return false;
428
429 len -= elemlen;
430 pos += 2 + elemlen;
431 }
432
433 return true;
434 }
435
436 /* message building helper */
437 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
438 int flags, u8 cmd)
439 {
440 /* since there is no private header just add the generic one */
441 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
442 }
443
444 static int nl80211_msg_put_channel(struct sk_buff *msg,
445 struct ieee80211_channel *chan)
446 {
447 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
448 chan->center_freq))
449 goto nla_put_failure;
450
451 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
452 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
453 goto nla_put_failure;
454 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
455 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
456 goto nla_put_failure;
457 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
458 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
459 goto nla_put_failure;
460 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
461 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
462 goto nla_put_failure;
463
464 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
465 DBM_TO_MBM(chan->max_power)))
466 goto nla_put_failure;
467
468 return 0;
469
470 nla_put_failure:
471 return -ENOBUFS;
472 }
473
474 /* netlink command implementations */
475
476 struct key_parse {
477 struct key_params p;
478 int idx;
479 int type;
480 bool def, defmgmt;
481 bool def_uni, def_multi;
482 };
483
484 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
485 {
486 struct nlattr *tb[NL80211_KEY_MAX + 1];
487 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
488 nl80211_key_policy);
489 if (err)
490 return err;
491
492 k->def = !!tb[NL80211_KEY_DEFAULT];
493 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
494
495 if (k->def) {
496 k->def_uni = true;
497 k->def_multi = true;
498 }
499 if (k->defmgmt)
500 k->def_multi = true;
501
502 if (tb[NL80211_KEY_IDX])
503 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
504
505 if (tb[NL80211_KEY_DATA]) {
506 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
507 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
508 }
509
510 if (tb[NL80211_KEY_SEQ]) {
511 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
512 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
513 }
514
515 if (tb[NL80211_KEY_CIPHER])
516 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
517
518 if (tb[NL80211_KEY_TYPE]) {
519 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
520 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
521 return -EINVAL;
522 }
523
524 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
525 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
526 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
527 tb[NL80211_KEY_DEFAULT_TYPES],
528 nl80211_key_default_policy);
529 if (err)
530 return err;
531
532 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
533 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
534 }
535
536 return 0;
537 }
538
539 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
540 {
541 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
542 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
543 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
544 }
545
546 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
547 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
548 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
549 }
550
551 if (info->attrs[NL80211_ATTR_KEY_IDX])
552 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
553
554 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
555 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
556
557 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
558 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
559
560 if (k->def) {
561 k->def_uni = true;
562 k->def_multi = true;
563 }
564 if (k->defmgmt)
565 k->def_multi = true;
566
567 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
568 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
569 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
570 return -EINVAL;
571 }
572
573 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
574 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
575 int err = nla_parse_nested(
576 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
577 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
578 nl80211_key_default_policy);
579 if (err)
580 return err;
581
582 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
583 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
584 }
585
586 return 0;
587 }
588
589 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
590 {
591 int err;
592
593 memset(k, 0, sizeof(*k));
594 k->idx = -1;
595 k->type = -1;
596
597 if (info->attrs[NL80211_ATTR_KEY])
598 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
599 else
600 err = nl80211_parse_key_old(info, k);
601
602 if (err)
603 return err;
604
605 if (k->def && k->defmgmt)
606 return -EINVAL;
607
608 if (k->defmgmt) {
609 if (k->def_uni || !k->def_multi)
610 return -EINVAL;
611 }
612
613 if (k->idx != -1) {
614 if (k->defmgmt) {
615 if (k->idx < 4 || k->idx > 5)
616 return -EINVAL;
617 } else if (k->def) {
618 if (k->idx < 0 || k->idx > 3)
619 return -EINVAL;
620 } else {
621 if (k->idx < 0 || k->idx > 5)
622 return -EINVAL;
623 }
624 }
625
626 return 0;
627 }
628
629 static struct cfg80211_cached_keys *
630 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
631 struct nlattr *keys)
632 {
633 struct key_parse parse;
634 struct nlattr *key;
635 struct cfg80211_cached_keys *result;
636 int rem, err, def = 0;
637
638 result = kzalloc(sizeof(*result), GFP_KERNEL);
639 if (!result)
640 return ERR_PTR(-ENOMEM);
641
642 result->def = -1;
643 result->defmgmt = -1;
644
645 nla_for_each_nested(key, keys, rem) {
646 memset(&parse, 0, sizeof(parse));
647 parse.idx = -1;
648
649 err = nl80211_parse_key_new(key, &parse);
650 if (err)
651 goto error;
652 err = -EINVAL;
653 if (!parse.p.key)
654 goto error;
655 if (parse.idx < 0 || parse.idx > 4)
656 goto error;
657 if (parse.def) {
658 if (def)
659 goto error;
660 def = 1;
661 result->def = parse.idx;
662 if (!parse.def_uni || !parse.def_multi)
663 goto error;
664 } else if (parse.defmgmt)
665 goto error;
666 err = cfg80211_validate_key_settings(rdev, &parse.p,
667 parse.idx, false, NULL);
668 if (err)
669 goto error;
670 result->params[parse.idx].cipher = parse.p.cipher;
671 result->params[parse.idx].key_len = parse.p.key_len;
672 result->params[parse.idx].key = result->data[parse.idx];
673 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
674 }
675
676 return result;
677 error:
678 kfree(result);
679 return ERR_PTR(err);
680 }
681
682 static int nl80211_key_allowed(struct wireless_dev *wdev)
683 {
684 ASSERT_WDEV_LOCK(wdev);
685
686 switch (wdev->iftype) {
687 case NL80211_IFTYPE_AP:
688 case NL80211_IFTYPE_AP_VLAN:
689 case NL80211_IFTYPE_P2P_GO:
690 case NL80211_IFTYPE_MESH_POINT:
691 break;
692 case NL80211_IFTYPE_ADHOC:
693 if (!wdev->current_bss)
694 return -ENOLINK;
695 break;
696 case NL80211_IFTYPE_STATION:
697 case NL80211_IFTYPE_P2P_CLIENT:
698 if (wdev->sme_state != CFG80211_SME_CONNECTED)
699 return -ENOLINK;
700 break;
701 default:
702 return -EINVAL;
703 }
704
705 return 0;
706 }
707
708 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
709 {
710 struct nlattr *nl_modes = nla_nest_start(msg, attr);
711 int i;
712
713 if (!nl_modes)
714 goto nla_put_failure;
715
716 i = 0;
717 while (ifmodes) {
718 if ((ifmodes & 1) && nla_put_flag(msg, i))
719 goto nla_put_failure;
720 ifmodes >>= 1;
721 i++;
722 }
723
724 nla_nest_end(msg, nl_modes);
725 return 0;
726
727 nla_put_failure:
728 return -ENOBUFS;
729 }
730
731 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
732 struct sk_buff *msg)
733 {
734 struct nlattr *nl_combis;
735 int i, j;
736
737 nl_combis = nla_nest_start(msg,
738 NL80211_ATTR_INTERFACE_COMBINATIONS);
739 if (!nl_combis)
740 goto nla_put_failure;
741
742 for (i = 0; i < wiphy->n_iface_combinations; i++) {
743 const struct ieee80211_iface_combination *c;
744 struct nlattr *nl_combi, *nl_limits;
745
746 c = &wiphy->iface_combinations[i];
747
748 nl_combi = nla_nest_start(msg, i + 1);
749 if (!nl_combi)
750 goto nla_put_failure;
751
752 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
753 if (!nl_limits)
754 goto nla_put_failure;
755
756 for (j = 0; j < c->n_limits; j++) {
757 struct nlattr *nl_limit;
758
759 nl_limit = nla_nest_start(msg, j + 1);
760 if (!nl_limit)
761 goto nla_put_failure;
762 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
763 c->limits[j].max))
764 goto nla_put_failure;
765 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
766 c->limits[j].types))
767 goto nla_put_failure;
768 nla_nest_end(msg, nl_limit);
769 }
770
771 nla_nest_end(msg, nl_limits);
772
773 if (c->beacon_int_infra_match &&
774 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
775 goto nla_put_failure;
776 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
777 c->num_different_channels) ||
778 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
779 c->max_interfaces))
780 goto nla_put_failure;
781
782 nla_nest_end(msg, nl_combi);
783 }
784
785 nla_nest_end(msg, nl_combis);
786
787 return 0;
788 nla_put_failure:
789 return -ENOBUFS;
790 }
791
792 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
793 struct cfg80211_registered_device *dev)
794 {
795 void *hdr;
796 struct nlattr *nl_bands, *nl_band;
797 struct nlattr *nl_freqs, *nl_freq;
798 struct nlattr *nl_rates, *nl_rate;
799 struct nlattr *nl_cmds;
800 enum ieee80211_band band;
801 struct ieee80211_channel *chan;
802 struct ieee80211_rate *rate;
803 int i;
804 const struct ieee80211_txrx_stypes *mgmt_stypes =
805 dev->wiphy.mgmt_stypes;
806
807 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
808 if (!hdr)
809 return -1;
810
811 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
812 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
813 nla_put_u32(msg, NL80211_ATTR_GENERATION,
814 cfg80211_rdev_list_generation) ||
815 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
816 dev->wiphy.retry_short) ||
817 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
818 dev->wiphy.retry_long) ||
819 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
820 dev->wiphy.frag_threshold) ||
821 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
822 dev->wiphy.rts_threshold) ||
823 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
824 dev->wiphy.coverage_class) ||
825 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
826 dev->wiphy.max_scan_ssids) ||
827 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
828 dev->wiphy.max_sched_scan_ssids) ||
829 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
830 dev->wiphy.max_scan_ie_len) ||
831 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
832 dev->wiphy.max_sched_scan_ie_len) ||
833 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
834 dev->wiphy.max_match_sets))
835 goto nla_put_failure;
836
837 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
838 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
839 goto nla_put_failure;
840 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
841 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
842 goto nla_put_failure;
843 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
844 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
845 goto nla_put_failure;
846 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
847 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
848 goto nla_put_failure;
849 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
850 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
851 goto nla_put_failure;
852 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
853 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
854 goto nla_put_failure;
855
856 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
857 sizeof(u32) * dev->wiphy.n_cipher_suites,
858 dev->wiphy.cipher_suites))
859 goto nla_put_failure;
860
861 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
862 dev->wiphy.max_num_pmkids))
863 goto nla_put_failure;
864
865 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
866 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
867 goto nla_put_failure;
868
869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
870 dev->wiphy.available_antennas_tx) ||
871 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
872 dev->wiphy.available_antennas_rx))
873 goto nla_put_failure;
874
875 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
876 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
877 dev->wiphy.probe_resp_offload))
878 goto nla_put_failure;
879
880 if ((dev->wiphy.available_antennas_tx ||
881 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
882 u32 tx_ant = 0, rx_ant = 0;
883 int res;
884 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
885 if (!res) {
886 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
887 tx_ant) ||
888 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
889 rx_ant))
890 goto nla_put_failure;
891 }
892 }
893
894 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
895 dev->wiphy.interface_modes))
896 goto nla_put_failure;
897
898 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
899 if (!nl_bands)
900 goto nla_put_failure;
901
902 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
903 if (!dev->wiphy.bands[band])
904 continue;
905
906 nl_band = nla_nest_start(msg, band);
907 if (!nl_band)
908 goto nla_put_failure;
909
910 /* add HT info */
911 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
912 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
913 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
914 &dev->wiphy.bands[band]->ht_cap.mcs) ||
915 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
916 dev->wiphy.bands[band]->ht_cap.cap) ||
917 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
918 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
919 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
920 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
921 goto nla_put_failure;
922
923 /* add frequencies */
924 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
925 if (!nl_freqs)
926 goto nla_put_failure;
927
928 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
929 nl_freq = nla_nest_start(msg, i);
930 if (!nl_freq)
931 goto nla_put_failure;
932
933 chan = &dev->wiphy.bands[band]->channels[i];
934
935 if (nl80211_msg_put_channel(msg, chan))
936 goto nla_put_failure;
937
938 nla_nest_end(msg, nl_freq);
939 }
940
941 nla_nest_end(msg, nl_freqs);
942
943 /* add bitrates */
944 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
945 if (!nl_rates)
946 goto nla_put_failure;
947
948 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
949 nl_rate = nla_nest_start(msg, i);
950 if (!nl_rate)
951 goto nla_put_failure;
952
953 rate = &dev->wiphy.bands[band]->bitrates[i];
954 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
955 rate->bitrate))
956 goto nla_put_failure;
957 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
958 nla_put_flag(msg,
959 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
960 goto nla_put_failure;
961
962 nla_nest_end(msg, nl_rate);
963 }
964
965 nla_nest_end(msg, nl_rates);
966
967 nla_nest_end(msg, nl_band);
968 }
969 nla_nest_end(msg, nl_bands);
970
971 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
972 if (!nl_cmds)
973 goto nla_put_failure;
974
975 i = 0;
976 #define CMD(op, n) \
977 do { \
978 if (dev->ops->op) { \
979 i++; \
980 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
981 goto nla_put_failure; \
982 } \
983 } while (0)
984
985 CMD(add_virtual_intf, NEW_INTERFACE);
986 CMD(change_virtual_intf, SET_INTERFACE);
987 CMD(add_key, NEW_KEY);
988 CMD(start_ap, START_AP);
989 CMD(add_station, NEW_STATION);
990 CMD(add_mpath, NEW_MPATH);
991 CMD(update_mesh_config, SET_MESH_CONFIG);
992 CMD(change_bss, SET_BSS);
993 CMD(auth, AUTHENTICATE);
994 CMD(assoc, ASSOCIATE);
995 CMD(deauth, DEAUTHENTICATE);
996 CMD(disassoc, DISASSOCIATE);
997 CMD(join_ibss, JOIN_IBSS);
998 CMD(join_mesh, JOIN_MESH);
999 CMD(set_pmksa, SET_PMKSA);
1000 CMD(del_pmksa, DEL_PMKSA);
1001 CMD(flush_pmksa, FLUSH_PMKSA);
1002 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1003 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1004 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1005 CMD(mgmt_tx, FRAME);
1006 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1007 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1008 i++;
1009 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1010 goto nla_put_failure;
1011 }
1012 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1013 dev->ops->join_mesh) {
1014 i++;
1015 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1016 goto nla_put_failure;
1017 }
1018 CMD(set_wds_peer, SET_WDS_PEER);
1019 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1020 CMD(tdls_mgmt, TDLS_MGMT);
1021 CMD(tdls_oper, TDLS_OPER);
1022 }
1023 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1024 CMD(sched_scan_start, START_SCHED_SCAN);
1025 CMD(probe_client, PROBE_CLIENT);
1026 CMD(set_noack_map, SET_NOACK_MAP);
1027 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1028 i++;
1029 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1030 goto nla_put_failure;
1031 }
1032
1033 #ifdef CONFIG_NL80211_TESTMODE
1034 CMD(testmode_cmd, TESTMODE);
1035 #endif
1036
1037 #undef CMD
1038
1039 if (dev->ops->connect || dev->ops->auth) {
1040 i++;
1041 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1042 goto nla_put_failure;
1043 }
1044
1045 if (dev->ops->disconnect || dev->ops->deauth) {
1046 i++;
1047 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1048 goto nla_put_failure;
1049 }
1050
1051 nla_nest_end(msg, nl_cmds);
1052
1053 if (dev->ops->remain_on_channel &&
1054 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1055 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1056 dev->wiphy.max_remain_on_channel_duration))
1057 goto nla_put_failure;
1058
1059 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1060 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1061 goto nla_put_failure;
1062
1063 if (mgmt_stypes) {
1064 u16 stypes;
1065 struct nlattr *nl_ftypes, *nl_ifs;
1066 enum nl80211_iftype ift;
1067
1068 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1069 if (!nl_ifs)
1070 goto nla_put_failure;
1071
1072 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1073 nl_ftypes = nla_nest_start(msg, ift);
1074 if (!nl_ftypes)
1075 goto nla_put_failure;
1076 i = 0;
1077 stypes = mgmt_stypes[ift].tx;
1078 while (stypes) {
1079 if ((stypes & 1) &&
1080 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1081 (i << 4) | IEEE80211_FTYPE_MGMT))
1082 goto nla_put_failure;
1083 stypes >>= 1;
1084 i++;
1085 }
1086 nla_nest_end(msg, nl_ftypes);
1087 }
1088
1089 nla_nest_end(msg, nl_ifs);
1090
1091 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1092 if (!nl_ifs)
1093 goto nla_put_failure;
1094
1095 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1096 nl_ftypes = nla_nest_start(msg, ift);
1097 if (!nl_ftypes)
1098 goto nla_put_failure;
1099 i = 0;
1100 stypes = mgmt_stypes[ift].rx;
1101 while (stypes) {
1102 if ((stypes & 1) &&
1103 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1104 (i << 4) | IEEE80211_FTYPE_MGMT))
1105 goto nla_put_failure;
1106 stypes >>= 1;
1107 i++;
1108 }
1109 nla_nest_end(msg, nl_ftypes);
1110 }
1111 nla_nest_end(msg, nl_ifs);
1112 }
1113
1114 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1115 struct nlattr *nl_wowlan;
1116
1117 nl_wowlan = nla_nest_start(msg,
1118 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1119 if (!nl_wowlan)
1120 goto nla_put_failure;
1121
1122 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1123 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1124 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1125 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1126 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1127 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1128 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1129 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1130 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1131 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1132 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1133 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1134 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1135 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1136 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1137 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1138 goto nla_put_failure;
1139 if (dev->wiphy.wowlan.n_patterns) {
1140 struct nl80211_wowlan_pattern_support pat = {
1141 .max_patterns = dev->wiphy.wowlan.n_patterns,
1142 .min_pattern_len =
1143 dev->wiphy.wowlan.pattern_min_len,
1144 .max_pattern_len =
1145 dev->wiphy.wowlan.pattern_max_len,
1146 };
1147 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1148 sizeof(pat), &pat))
1149 goto nla_put_failure;
1150 }
1151
1152 nla_nest_end(msg, nl_wowlan);
1153 }
1154
1155 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1156 dev->wiphy.software_iftypes))
1157 goto nla_put_failure;
1158
1159 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1160 goto nla_put_failure;
1161
1162 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1163 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1164 dev->wiphy.ap_sme_capa))
1165 goto nla_put_failure;
1166
1167 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1168 dev->wiphy.features))
1169 goto nla_put_failure;
1170
1171 if (dev->wiphy.ht_capa_mod_mask &&
1172 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1173 sizeof(*dev->wiphy.ht_capa_mod_mask),
1174 dev->wiphy.ht_capa_mod_mask))
1175 goto nla_put_failure;
1176
1177 return genlmsg_end(msg, hdr);
1178
1179 nla_put_failure:
1180 genlmsg_cancel(msg, hdr);
1181 return -EMSGSIZE;
1182 }
1183
1184 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1185 {
1186 int idx = 0;
1187 int start = cb->args[0];
1188 struct cfg80211_registered_device *dev;
1189
1190 mutex_lock(&cfg80211_mutex);
1191 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1192 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1193 continue;
1194 if (++idx <= start)
1195 continue;
1196 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1197 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1198 dev) < 0) {
1199 idx--;
1200 break;
1201 }
1202 }
1203 mutex_unlock(&cfg80211_mutex);
1204
1205 cb->args[0] = idx;
1206
1207 return skb->len;
1208 }
1209
1210 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1211 {
1212 struct sk_buff *msg;
1213 struct cfg80211_registered_device *dev = info->user_ptr[0];
1214
1215 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1216 if (!msg)
1217 return -ENOMEM;
1218
1219 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1220 nlmsg_free(msg);
1221 return -ENOBUFS;
1222 }
1223
1224 return genlmsg_reply(msg, info);
1225 }
1226
1227 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1228 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1229 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1230 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1231 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1232 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1233 };
1234
1235 static int parse_txq_params(struct nlattr *tb[],
1236 struct ieee80211_txq_params *txq_params)
1237 {
1238 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1239 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1240 !tb[NL80211_TXQ_ATTR_AIFS])
1241 return -EINVAL;
1242
1243 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1244 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1245 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1246 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1247 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1248
1249 if (txq_params->ac >= NL80211_NUM_ACS)
1250 return -EINVAL;
1251
1252 return 0;
1253 }
1254
1255 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1256 {
1257 /*
1258 * You can only set the channel explicitly for WDS interfaces,
1259 * all others have their channel managed via their respective
1260 * "establish a connection" command (connect, join, ...)
1261 *
1262 * For AP/GO and mesh mode, the channel can be set with the
1263 * channel userspace API, but is only stored and passed to the
1264 * low-level driver when the AP starts or the mesh is joined.
1265 * This is for backward compatibility, userspace can also give
1266 * the channel in the start-ap or join-mesh commands instead.
1267 *
1268 * Monitors are special as they are normally slaved to
1269 * whatever else is going on, so they have their own special
1270 * operation to set the monitor channel if possible.
1271 */
1272 return !wdev ||
1273 wdev->iftype == NL80211_IFTYPE_AP ||
1274 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1275 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1276 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1277 }
1278
1279 static bool nl80211_valid_channel_type(struct genl_info *info,
1280 enum nl80211_channel_type *channel_type)
1281 {
1282 enum nl80211_channel_type tmp;
1283
1284 if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1285 return false;
1286
1287 tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1288 if (tmp != NL80211_CHAN_NO_HT &&
1289 tmp != NL80211_CHAN_HT20 &&
1290 tmp != NL80211_CHAN_HT40PLUS &&
1291 tmp != NL80211_CHAN_HT40MINUS)
1292 return false;
1293
1294 if (channel_type)
1295 *channel_type = tmp;
1296
1297 return true;
1298 }
1299
1300 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1301 struct wireless_dev *wdev,
1302 struct genl_info *info)
1303 {
1304 struct ieee80211_channel *channel;
1305 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1306 u32 freq;
1307 int result;
1308 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1309
1310 if (wdev)
1311 iftype = wdev->iftype;
1312
1313 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1314 return -EINVAL;
1315
1316 if (!nl80211_can_set_dev_channel(wdev))
1317 return -EOPNOTSUPP;
1318
1319 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1320 !nl80211_valid_channel_type(info, &channel_type))
1321 return -EINVAL;
1322
1323 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1324
1325 mutex_lock(&rdev->devlist_mtx);
1326 switch (iftype) {
1327 case NL80211_IFTYPE_AP:
1328 case NL80211_IFTYPE_P2P_GO:
1329 if (wdev->beacon_interval) {
1330 result = -EBUSY;
1331 break;
1332 }
1333 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1334 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1335 channel,
1336 channel_type)) {
1337 result = -EINVAL;
1338 break;
1339 }
1340 wdev->preset_chan = channel;
1341 wdev->preset_chantype = channel_type;
1342 result = 0;
1343 break;
1344 case NL80211_IFTYPE_MESH_POINT:
1345 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1346 break;
1347 case NL80211_IFTYPE_MONITOR:
1348 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1349 break;
1350 default:
1351 result = -EINVAL;
1352 }
1353 mutex_unlock(&rdev->devlist_mtx);
1354
1355 return result;
1356 }
1357
1358 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1359 {
1360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1361 struct net_device *netdev = info->user_ptr[1];
1362
1363 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1364 }
1365
1366 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1367 {
1368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1369 struct net_device *dev = info->user_ptr[1];
1370 struct wireless_dev *wdev = dev->ieee80211_ptr;
1371 const u8 *bssid;
1372
1373 if (!info->attrs[NL80211_ATTR_MAC])
1374 return -EINVAL;
1375
1376 if (netif_running(dev))
1377 return -EBUSY;
1378
1379 if (!rdev->ops->set_wds_peer)
1380 return -EOPNOTSUPP;
1381
1382 if (wdev->iftype != NL80211_IFTYPE_WDS)
1383 return -EOPNOTSUPP;
1384
1385 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1386 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1387 }
1388
1389
1390 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1391 {
1392 struct cfg80211_registered_device *rdev;
1393 struct net_device *netdev = NULL;
1394 struct wireless_dev *wdev;
1395 int result = 0, rem_txq_params = 0;
1396 struct nlattr *nl_txq_params;
1397 u32 changed;
1398 u8 retry_short = 0, retry_long = 0;
1399 u32 frag_threshold = 0, rts_threshold = 0;
1400 u8 coverage_class = 0;
1401
1402 /*
1403 * Try to find the wiphy and netdev. Normally this
1404 * function shouldn't need the netdev, but this is
1405 * done for backward compatibility -- previously
1406 * setting the channel was done per wiphy, but now
1407 * it is per netdev. Previous userland like hostapd
1408 * also passed a netdev to set_wiphy, so that it is
1409 * possible to let that go to the right netdev!
1410 */
1411 mutex_lock(&cfg80211_mutex);
1412
1413 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1414 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1415
1416 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1417 if (netdev && netdev->ieee80211_ptr) {
1418 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1419 mutex_lock(&rdev->mtx);
1420 } else
1421 netdev = NULL;
1422 }
1423
1424 if (!netdev) {
1425 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1426 info->attrs);
1427 if (IS_ERR(rdev)) {
1428 mutex_unlock(&cfg80211_mutex);
1429 return PTR_ERR(rdev);
1430 }
1431 wdev = NULL;
1432 netdev = NULL;
1433 result = 0;
1434
1435 mutex_lock(&rdev->mtx);
1436 } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1437 wdev = netdev->ieee80211_ptr;
1438 else
1439 wdev = NULL;
1440
1441 /*
1442 * end workaround code, by now the rdev is available
1443 * and locked, and wdev may or may not be NULL.
1444 */
1445
1446 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1447 result = cfg80211_dev_rename(
1448 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1449
1450 mutex_unlock(&cfg80211_mutex);
1451
1452 if (result)
1453 goto bad_res;
1454
1455 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1456 struct ieee80211_txq_params txq_params;
1457 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1458
1459 if (!rdev->ops->set_txq_params) {
1460 result = -EOPNOTSUPP;
1461 goto bad_res;
1462 }
1463
1464 if (!netdev) {
1465 result = -EINVAL;
1466 goto bad_res;
1467 }
1468
1469 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1470 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1471 result = -EINVAL;
1472 goto bad_res;
1473 }
1474
1475 if (!netif_running(netdev)) {
1476 result = -ENETDOWN;
1477 goto bad_res;
1478 }
1479
1480 nla_for_each_nested(nl_txq_params,
1481 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1482 rem_txq_params) {
1483 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1484 nla_data(nl_txq_params),
1485 nla_len(nl_txq_params),
1486 txq_params_policy);
1487 result = parse_txq_params(tb, &txq_params);
1488 if (result)
1489 goto bad_res;
1490
1491 result = rdev->ops->set_txq_params(&rdev->wiphy,
1492 netdev,
1493 &txq_params);
1494 if (result)
1495 goto bad_res;
1496 }
1497 }
1498
1499 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1500 result = __nl80211_set_channel(rdev, wdev, info);
1501 if (result)
1502 goto bad_res;
1503 }
1504
1505 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1506 enum nl80211_tx_power_setting type;
1507 int idx, mbm = 0;
1508
1509 if (!rdev->ops->set_tx_power) {
1510 result = -EOPNOTSUPP;
1511 goto bad_res;
1512 }
1513
1514 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1515 type = nla_get_u32(info->attrs[idx]);
1516
1517 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1518 (type != NL80211_TX_POWER_AUTOMATIC)) {
1519 result = -EINVAL;
1520 goto bad_res;
1521 }
1522
1523 if (type != NL80211_TX_POWER_AUTOMATIC) {
1524 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1525 mbm = nla_get_u32(info->attrs[idx]);
1526 }
1527
1528 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1529 if (result)
1530 goto bad_res;
1531 }
1532
1533 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1534 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1535 u32 tx_ant, rx_ant;
1536 if ((!rdev->wiphy.available_antennas_tx &&
1537 !rdev->wiphy.available_antennas_rx) ||
1538 !rdev->ops->set_antenna) {
1539 result = -EOPNOTSUPP;
1540 goto bad_res;
1541 }
1542
1543 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1544 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1545
1546 /* reject antenna configurations which don't match the
1547 * available antenna masks, except for the "all" mask */
1548 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1549 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1550 result = -EINVAL;
1551 goto bad_res;
1552 }
1553
1554 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1555 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1556
1557 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1558 if (result)
1559 goto bad_res;
1560 }
1561
1562 changed = 0;
1563
1564 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1565 retry_short = nla_get_u8(
1566 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1567 if (retry_short == 0) {
1568 result = -EINVAL;
1569 goto bad_res;
1570 }
1571 changed |= WIPHY_PARAM_RETRY_SHORT;
1572 }
1573
1574 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1575 retry_long = nla_get_u8(
1576 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1577 if (retry_long == 0) {
1578 result = -EINVAL;
1579 goto bad_res;
1580 }
1581 changed |= WIPHY_PARAM_RETRY_LONG;
1582 }
1583
1584 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1585 frag_threshold = nla_get_u32(
1586 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1587 if (frag_threshold < 256) {
1588 result = -EINVAL;
1589 goto bad_res;
1590 }
1591 if (frag_threshold != (u32) -1) {
1592 /*
1593 * Fragments (apart from the last one) are required to
1594 * have even length. Make the fragmentation code
1595 * simpler by stripping LSB should someone try to use
1596 * odd threshold value.
1597 */
1598 frag_threshold &= ~0x1;
1599 }
1600 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1601 }
1602
1603 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1604 rts_threshold = nla_get_u32(
1605 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1606 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1607 }
1608
1609 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1610 coverage_class = nla_get_u8(
1611 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1612 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1613 }
1614
1615 if (changed) {
1616 u8 old_retry_short, old_retry_long;
1617 u32 old_frag_threshold, old_rts_threshold;
1618 u8 old_coverage_class;
1619
1620 if (!rdev->ops->set_wiphy_params) {
1621 result = -EOPNOTSUPP;
1622 goto bad_res;
1623 }
1624
1625 old_retry_short = rdev->wiphy.retry_short;
1626 old_retry_long = rdev->wiphy.retry_long;
1627 old_frag_threshold = rdev->wiphy.frag_threshold;
1628 old_rts_threshold = rdev->wiphy.rts_threshold;
1629 old_coverage_class = rdev->wiphy.coverage_class;
1630
1631 if (changed & WIPHY_PARAM_RETRY_SHORT)
1632 rdev->wiphy.retry_short = retry_short;
1633 if (changed & WIPHY_PARAM_RETRY_LONG)
1634 rdev->wiphy.retry_long = retry_long;
1635 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1636 rdev->wiphy.frag_threshold = frag_threshold;
1637 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1638 rdev->wiphy.rts_threshold = rts_threshold;
1639 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1640 rdev->wiphy.coverage_class = coverage_class;
1641
1642 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1643 if (result) {
1644 rdev->wiphy.retry_short = old_retry_short;
1645 rdev->wiphy.retry_long = old_retry_long;
1646 rdev->wiphy.frag_threshold = old_frag_threshold;
1647 rdev->wiphy.rts_threshold = old_rts_threshold;
1648 rdev->wiphy.coverage_class = old_coverage_class;
1649 }
1650 }
1651
1652 bad_res:
1653 mutex_unlock(&rdev->mtx);
1654 if (netdev)
1655 dev_put(netdev);
1656 return result;
1657 }
1658
1659
1660 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1661 struct cfg80211_registered_device *rdev,
1662 struct net_device *dev)
1663 {
1664 void *hdr;
1665
1666 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1667 if (!hdr)
1668 return -1;
1669
1670 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1671 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1672 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name) ||
1673 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1674 dev->ieee80211_ptr->iftype) ||
1675 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1676 rdev->devlist_generation ^
1677 (cfg80211_rdev_list_generation << 2)))
1678 goto nla_put_failure;
1679
1680 if (rdev->ops->get_channel) {
1681 struct ieee80211_channel *chan;
1682 enum nl80211_channel_type channel_type;
1683
1684 chan = rdev->ops->get_channel(&rdev->wiphy, &channel_type);
1685 if (chan &&
1686 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1687 chan->center_freq) ||
1688 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1689 channel_type)))
1690 goto nla_put_failure;
1691 }
1692
1693 return genlmsg_end(msg, hdr);
1694
1695 nla_put_failure:
1696 genlmsg_cancel(msg, hdr);
1697 return -EMSGSIZE;
1698 }
1699
1700 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1701 {
1702 int wp_idx = 0;
1703 int if_idx = 0;
1704 int wp_start = cb->args[0];
1705 int if_start = cb->args[1];
1706 struct cfg80211_registered_device *rdev;
1707 struct wireless_dev *wdev;
1708
1709 mutex_lock(&cfg80211_mutex);
1710 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1711 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1712 continue;
1713 if (wp_idx < wp_start) {
1714 wp_idx++;
1715 continue;
1716 }
1717 if_idx = 0;
1718
1719 mutex_lock(&rdev->devlist_mtx);
1720 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1721 if (if_idx < if_start) {
1722 if_idx++;
1723 continue;
1724 }
1725 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1726 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1727 rdev, wdev->netdev) < 0) {
1728 mutex_unlock(&rdev->devlist_mtx);
1729 goto out;
1730 }
1731 if_idx++;
1732 }
1733 mutex_unlock(&rdev->devlist_mtx);
1734
1735 wp_idx++;
1736 }
1737 out:
1738 mutex_unlock(&cfg80211_mutex);
1739
1740 cb->args[0] = wp_idx;
1741 cb->args[1] = if_idx;
1742
1743 return skb->len;
1744 }
1745
1746 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1747 {
1748 struct sk_buff *msg;
1749 struct cfg80211_registered_device *dev = info->user_ptr[0];
1750 struct net_device *netdev = info->user_ptr[1];
1751
1752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1753 if (!msg)
1754 return -ENOMEM;
1755
1756 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1757 dev, netdev) < 0) {
1758 nlmsg_free(msg);
1759 return -ENOBUFS;
1760 }
1761
1762 return genlmsg_reply(msg, info);
1763 }
1764
1765 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1766 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1767 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1768 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1769 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1770 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1771 };
1772
1773 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1774 {
1775 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1776 int flag;
1777
1778 *mntrflags = 0;
1779
1780 if (!nla)
1781 return -EINVAL;
1782
1783 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1784 nla, mntr_flags_policy))
1785 return -EINVAL;
1786
1787 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1788 if (flags[flag])
1789 *mntrflags |= (1<<flag);
1790
1791 return 0;
1792 }
1793
1794 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1795 struct net_device *netdev, u8 use_4addr,
1796 enum nl80211_iftype iftype)
1797 {
1798 if (!use_4addr) {
1799 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1800 return -EBUSY;
1801 return 0;
1802 }
1803
1804 switch (iftype) {
1805 case NL80211_IFTYPE_AP_VLAN:
1806 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1807 return 0;
1808 break;
1809 case NL80211_IFTYPE_STATION:
1810 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1811 return 0;
1812 break;
1813 default:
1814 break;
1815 }
1816
1817 return -EOPNOTSUPP;
1818 }
1819
1820 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1823 struct vif_params params;
1824 int err;
1825 enum nl80211_iftype otype, ntype;
1826 struct net_device *dev = info->user_ptr[1];
1827 u32 _flags, *flags = NULL;
1828 bool change = false;
1829
1830 memset(&params, 0, sizeof(params));
1831
1832 otype = ntype = dev->ieee80211_ptr->iftype;
1833
1834 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1835 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1836 if (otype != ntype)
1837 change = true;
1838 if (ntype > NL80211_IFTYPE_MAX)
1839 return -EINVAL;
1840 }
1841
1842 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1843 struct wireless_dev *wdev = dev->ieee80211_ptr;
1844
1845 if (ntype != NL80211_IFTYPE_MESH_POINT)
1846 return -EINVAL;
1847 if (netif_running(dev))
1848 return -EBUSY;
1849
1850 wdev_lock(wdev);
1851 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1852 IEEE80211_MAX_MESH_ID_LEN);
1853 wdev->mesh_id_up_len =
1854 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1855 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1856 wdev->mesh_id_up_len);
1857 wdev_unlock(wdev);
1858 }
1859
1860 if (info->attrs[NL80211_ATTR_4ADDR]) {
1861 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1862 change = true;
1863 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1864 if (err)
1865 return err;
1866 } else {
1867 params.use_4addr = -1;
1868 }
1869
1870 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1871 if (ntype != NL80211_IFTYPE_MONITOR)
1872 return -EINVAL;
1873 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1874 &_flags);
1875 if (err)
1876 return err;
1877
1878 flags = &_flags;
1879 change = true;
1880 }
1881
1882 if (change)
1883 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1884 else
1885 err = 0;
1886
1887 if (!err && params.use_4addr != -1)
1888 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1889
1890 return err;
1891 }
1892
1893 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1894 {
1895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1896 struct vif_params params;
1897 struct net_device *dev;
1898 int err;
1899 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1900 u32 flags;
1901
1902 memset(&params, 0, sizeof(params));
1903
1904 if (!info->attrs[NL80211_ATTR_IFNAME])
1905 return -EINVAL;
1906
1907 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1908 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1909 if (type > NL80211_IFTYPE_MAX)
1910 return -EINVAL;
1911 }
1912
1913 if (!rdev->ops->add_virtual_intf ||
1914 !(rdev->wiphy.interface_modes & (1 << type)))
1915 return -EOPNOTSUPP;
1916
1917 if (info->attrs[NL80211_ATTR_4ADDR]) {
1918 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1919 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1920 if (err)
1921 return err;
1922 }
1923
1924 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1925 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1926 &flags);
1927 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1928 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1929 type, err ? NULL : &flags, &params);
1930 if (IS_ERR(dev))
1931 return PTR_ERR(dev);
1932
1933 if (type == NL80211_IFTYPE_MESH_POINT &&
1934 info->attrs[NL80211_ATTR_MESH_ID]) {
1935 struct wireless_dev *wdev = dev->ieee80211_ptr;
1936
1937 wdev_lock(wdev);
1938 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1939 IEEE80211_MAX_MESH_ID_LEN);
1940 wdev->mesh_id_up_len =
1941 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1942 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1943 wdev->mesh_id_up_len);
1944 wdev_unlock(wdev);
1945 }
1946
1947 return 0;
1948 }
1949
1950 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1951 {
1952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1953 struct net_device *dev = info->user_ptr[1];
1954
1955 if (!rdev->ops->del_virtual_intf)
1956 return -EOPNOTSUPP;
1957
1958 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1959 }
1960
1961 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1962 {
1963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1964 struct net_device *dev = info->user_ptr[1];
1965 u16 noack_map;
1966
1967 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1968 return -EINVAL;
1969
1970 if (!rdev->ops->set_noack_map)
1971 return -EOPNOTSUPP;
1972
1973 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1974
1975 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1976 }
1977
1978 struct get_key_cookie {
1979 struct sk_buff *msg;
1980 int error;
1981 int idx;
1982 };
1983
1984 static void get_key_callback(void *c, struct key_params *params)
1985 {
1986 struct nlattr *key;
1987 struct get_key_cookie *cookie = c;
1988
1989 if ((params->key &&
1990 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
1991 params->key_len, params->key)) ||
1992 (params->seq &&
1993 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
1994 params->seq_len, params->seq)) ||
1995 (params->cipher &&
1996 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
1997 params->cipher)))
1998 goto nla_put_failure;
1999
2000 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2001 if (!key)
2002 goto nla_put_failure;
2003
2004 if ((params->key &&
2005 nla_put(cookie->msg, NL80211_KEY_DATA,
2006 params->key_len, params->key)) ||
2007 (params->seq &&
2008 nla_put(cookie->msg, NL80211_KEY_SEQ,
2009 params->seq_len, params->seq)) ||
2010 (params->cipher &&
2011 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2012 params->cipher)))
2013 goto nla_put_failure;
2014
2015 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2016 goto nla_put_failure;
2017
2018 nla_nest_end(cookie->msg, key);
2019
2020 return;
2021 nla_put_failure:
2022 cookie->error = 1;
2023 }
2024
2025 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 int err;
2029 struct net_device *dev = info->user_ptr[1];
2030 u8 key_idx = 0;
2031 const u8 *mac_addr = NULL;
2032 bool pairwise;
2033 struct get_key_cookie cookie = {
2034 .error = 0,
2035 };
2036 void *hdr;
2037 struct sk_buff *msg;
2038
2039 if (info->attrs[NL80211_ATTR_KEY_IDX])
2040 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2041
2042 if (key_idx > 5)
2043 return -EINVAL;
2044
2045 if (info->attrs[NL80211_ATTR_MAC])
2046 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2047
2048 pairwise = !!mac_addr;
2049 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2050 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2051 if (kt >= NUM_NL80211_KEYTYPES)
2052 return -EINVAL;
2053 if (kt != NL80211_KEYTYPE_GROUP &&
2054 kt != NL80211_KEYTYPE_PAIRWISE)
2055 return -EINVAL;
2056 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2057 }
2058
2059 if (!rdev->ops->get_key)
2060 return -EOPNOTSUPP;
2061
2062 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2063 if (!msg)
2064 return -ENOMEM;
2065
2066 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2067 NL80211_CMD_NEW_KEY);
2068 if (IS_ERR(hdr))
2069 return PTR_ERR(hdr);
2070
2071 cookie.msg = msg;
2072 cookie.idx = key_idx;
2073
2074 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2075 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2076 goto nla_put_failure;
2077 if (mac_addr &&
2078 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2079 goto nla_put_failure;
2080
2081 if (pairwise && mac_addr &&
2082 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2083 return -ENOENT;
2084
2085 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2086 mac_addr, &cookie, get_key_callback);
2087
2088 if (err)
2089 goto free_msg;
2090
2091 if (cookie.error)
2092 goto nla_put_failure;
2093
2094 genlmsg_end(msg, hdr);
2095 return genlmsg_reply(msg, info);
2096
2097 nla_put_failure:
2098 err = -ENOBUFS;
2099 free_msg:
2100 nlmsg_free(msg);
2101 return err;
2102 }
2103
2104 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2105 {
2106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2107 struct key_parse key;
2108 int err;
2109 struct net_device *dev = info->user_ptr[1];
2110
2111 err = nl80211_parse_key(info, &key);
2112 if (err)
2113 return err;
2114
2115 if (key.idx < 0)
2116 return -EINVAL;
2117
2118 /* only support setting default key */
2119 if (!key.def && !key.defmgmt)
2120 return -EINVAL;
2121
2122 wdev_lock(dev->ieee80211_ptr);
2123
2124 if (key.def) {
2125 if (!rdev->ops->set_default_key) {
2126 err = -EOPNOTSUPP;
2127 goto out;
2128 }
2129
2130 err = nl80211_key_allowed(dev->ieee80211_ptr);
2131 if (err)
2132 goto out;
2133
2134 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2135 key.def_uni, key.def_multi);
2136
2137 if (err)
2138 goto out;
2139
2140 #ifdef CONFIG_CFG80211_WEXT
2141 dev->ieee80211_ptr->wext.default_key = key.idx;
2142 #endif
2143 } else {
2144 if (key.def_uni || !key.def_multi) {
2145 err = -EINVAL;
2146 goto out;
2147 }
2148
2149 if (!rdev->ops->set_default_mgmt_key) {
2150 err = -EOPNOTSUPP;
2151 goto out;
2152 }
2153
2154 err = nl80211_key_allowed(dev->ieee80211_ptr);
2155 if (err)
2156 goto out;
2157
2158 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2159 dev, key.idx);
2160 if (err)
2161 goto out;
2162
2163 #ifdef CONFIG_CFG80211_WEXT
2164 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2165 #endif
2166 }
2167
2168 out:
2169 wdev_unlock(dev->ieee80211_ptr);
2170
2171 return err;
2172 }
2173
2174 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2175 {
2176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2177 int err;
2178 struct net_device *dev = info->user_ptr[1];
2179 struct key_parse key;
2180 const u8 *mac_addr = NULL;
2181
2182 err = nl80211_parse_key(info, &key);
2183 if (err)
2184 return err;
2185
2186 if (!key.p.key)
2187 return -EINVAL;
2188
2189 if (info->attrs[NL80211_ATTR_MAC])
2190 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2191
2192 if (key.type == -1) {
2193 if (mac_addr)
2194 key.type = NL80211_KEYTYPE_PAIRWISE;
2195 else
2196 key.type = NL80211_KEYTYPE_GROUP;
2197 }
2198
2199 /* for now */
2200 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2201 key.type != NL80211_KEYTYPE_GROUP)
2202 return -EINVAL;
2203
2204 if (!rdev->ops->add_key)
2205 return -EOPNOTSUPP;
2206
2207 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2208 key.type == NL80211_KEYTYPE_PAIRWISE,
2209 mac_addr))
2210 return -EINVAL;
2211
2212 wdev_lock(dev->ieee80211_ptr);
2213 err = nl80211_key_allowed(dev->ieee80211_ptr);
2214 if (!err)
2215 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2216 key.type == NL80211_KEYTYPE_PAIRWISE,
2217 mac_addr, &key.p);
2218 wdev_unlock(dev->ieee80211_ptr);
2219
2220 return err;
2221 }
2222
2223 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2224 {
2225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2226 int err;
2227 struct net_device *dev = info->user_ptr[1];
2228 u8 *mac_addr = NULL;
2229 struct key_parse key;
2230
2231 err = nl80211_parse_key(info, &key);
2232 if (err)
2233 return err;
2234
2235 if (info->attrs[NL80211_ATTR_MAC])
2236 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2237
2238 if (key.type == -1) {
2239 if (mac_addr)
2240 key.type = NL80211_KEYTYPE_PAIRWISE;
2241 else
2242 key.type = NL80211_KEYTYPE_GROUP;
2243 }
2244
2245 /* for now */
2246 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2247 key.type != NL80211_KEYTYPE_GROUP)
2248 return -EINVAL;
2249
2250 if (!rdev->ops->del_key)
2251 return -EOPNOTSUPP;
2252
2253 wdev_lock(dev->ieee80211_ptr);
2254 err = nl80211_key_allowed(dev->ieee80211_ptr);
2255
2256 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2257 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2258 err = -ENOENT;
2259
2260 if (!err)
2261 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2262 key.type == NL80211_KEYTYPE_PAIRWISE,
2263 mac_addr);
2264
2265 #ifdef CONFIG_CFG80211_WEXT
2266 if (!err) {
2267 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2268 dev->ieee80211_ptr->wext.default_key = -1;
2269 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2270 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2271 }
2272 #endif
2273 wdev_unlock(dev->ieee80211_ptr);
2274
2275 return err;
2276 }
2277
2278 static int nl80211_parse_beacon(struct genl_info *info,
2279 struct cfg80211_beacon_data *bcn)
2280 {
2281 bool haveinfo = false;
2282
2283 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2284 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2285 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2286 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2287 return -EINVAL;
2288
2289 memset(bcn, 0, sizeof(*bcn));
2290
2291 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2292 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2293 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2294 if (!bcn->head_len)
2295 return -EINVAL;
2296 haveinfo = true;
2297 }
2298
2299 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2300 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2301 bcn->tail_len =
2302 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2303 haveinfo = true;
2304 }
2305
2306 if (!haveinfo)
2307 return -EINVAL;
2308
2309 if (info->attrs[NL80211_ATTR_IE]) {
2310 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2311 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2312 }
2313
2314 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2315 bcn->proberesp_ies =
2316 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2317 bcn->proberesp_ies_len =
2318 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2319 }
2320
2321 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2322 bcn->assocresp_ies =
2323 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2324 bcn->assocresp_ies_len =
2325 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2326 }
2327
2328 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2329 bcn->probe_resp =
2330 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2331 bcn->probe_resp_len =
2332 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2333 }
2334
2335 return 0;
2336 }
2337
2338 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2339 {
2340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2341 struct net_device *dev = info->user_ptr[1];
2342 struct wireless_dev *wdev = dev->ieee80211_ptr;
2343 struct cfg80211_ap_settings params;
2344 int err;
2345
2346 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2347 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2348 return -EOPNOTSUPP;
2349
2350 if (!rdev->ops->start_ap)
2351 return -EOPNOTSUPP;
2352
2353 if (wdev->beacon_interval)
2354 return -EALREADY;
2355
2356 memset(&params, 0, sizeof(params));
2357
2358 /* these are required for START_AP */
2359 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2360 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2361 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2362 return -EINVAL;
2363
2364 err = nl80211_parse_beacon(info, &params.beacon);
2365 if (err)
2366 return err;
2367
2368 params.beacon_interval =
2369 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2370 params.dtim_period =
2371 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2372
2373 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2374 if (err)
2375 return err;
2376
2377 /*
2378 * In theory, some of these attributes should be required here
2379 * but since they were not used when the command was originally
2380 * added, keep them optional for old user space programs to let
2381 * them continue to work with drivers that do not need the
2382 * additional information -- drivers must check!
2383 */
2384 if (info->attrs[NL80211_ATTR_SSID]) {
2385 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2386 params.ssid_len =
2387 nla_len(info->attrs[NL80211_ATTR_SSID]);
2388 if (params.ssid_len == 0 ||
2389 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2390 return -EINVAL;
2391 }
2392
2393 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2394 params.hidden_ssid = nla_get_u32(
2395 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2396 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2397 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2398 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2399 return -EINVAL;
2400 }
2401
2402 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2403
2404 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2405 params.auth_type = nla_get_u32(
2406 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2407 if (!nl80211_valid_auth_type(params.auth_type))
2408 return -EINVAL;
2409 } else
2410 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2411
2412 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2413 NL80211_MAX_NR_CIPHER_SUITES);
2414 if (err)
2415 return err;
2416
2417 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2418 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2419 return -EOPNOTSUPP;
2420 params.inactivity_timeout = nla_get_u16(
2421 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2422 }
2423
2424 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2425 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2426
2427 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2428 !nl80211_valid_channel_type(info, &channel_type))
2429 return -EINVAL;
2430
2431 params.channel = rdev_freq_to_chan(rdev,
2432 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2433 channel_type);
2434 if (!params.channel)
2435 return -EINVAL;
2436 params.channel_type = channel_type;
2437 } else if (wdev->preset_chan) {
2438 params.channel = wdev->preset_chan;
2439 params.channel_type = wdev->preset_chantype;
2440 } else
2441 return -EINVAL;
2442
2443 if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2444 params.channel_type))
2445 return -EINVAL;
2446
2447 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2448 if (!err)
2449 wdev->beacon_interval = params.beacon_interval;
2450 return err;
2451 }
2452
2453 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2454 {
2455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2456 struct net_device *dev = info->user_ptr[1];
2457 struct wireless_dev *wdev = dev->ieee80211_ptr;
2458 struct cfg80211_beacon_data params;
2459 int err;
2460
2461 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2462 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2463 return -EOPNOTSUPP;
2464
2465 if (!rdev->ops->change_beacon)
2466 return -EOPNOTSUPP;
2467
2468 if (!wdev->beacon_interval)
2469 return -EINVAL;
2470
2471 err = nl80211_parse_beacon(info, &params);
2472 if (err)
2473 return err;
2474
2475 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2476 }
2477
2478 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2479 {
2480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2481 struct net_device *dev = info->user_ptr[1];
2482 struct wireless_dev *wdev = dev->ieee80211_ptr;
2483 int err;
2484
2485 if (!rdev->ops->stop_ap)
2486 return -EOPNOTSUPP;
2487
2488 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2489 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2490 return -EOPNOTSUPP;
2491
2492 if (!wdev->beacon_interval)
2493 return -ENOENT;
2494
2495 err = rdev->ops->stop_ap(&rdev->wiphy, dev);
2496 if (!err)
2497 wdev->beacon_interval = 0;
2498 return err;
2499 }
2500
2501 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2502 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2503 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2504 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2505 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2506 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2507 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2508 };
2509
2510 static int parse_station_flags(struct genl_info *info,
2511 enum nl80211_iftype iftype,
2512 struct station_parameters *params)
2513 {
2514 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2515 struct nlattr *nla;
2516 int flag;
2517
2518 /*
2519 * Try parsing the new attribute first so userspace
2520 * can specify both for older kernels.
2521 */
2522 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2523 if (nla) {
2524 struct nl80211_sta_flag_update *sta_flags;
2525
2526 sta_flags = nla_data(nla);
2527 params->sta_flags_mask = sta_flags->mask;
2528 params->sta_flags_set = sta_flags->set;
2529 if ((params->sta_flags_mask |
2530 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2531 return -EINVAL;
2532 return 0;
2533 }
2534
2535 /* if present, parse the old attribute */
2536
2537 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2538 if (!nla)
2539 return 0;
2540
2541 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2542 nla, sta_flags_policy))
2543 return -EINVAL;
2544
2545 /*
2546 * Only allow certain flags for interface types so that
2547 * other attributes are silently ignored. Remember that
2548 * this is backward compatibility code with old userspace
2549 * and shouldn't be hit in other cases anyway.
2550 */
2551 switch (iftype) {
2552 case NL80211_IFTYPE_AP:
2553 case NL80211_IFTYPE_AP_VLAN:
2554 case NL80211_IFTYPE_P2P_GO:
2555 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2556 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2557 BIT(NL80211_STA_FLAG_WME) |
2558 BIT(NL80211_STA_FLAG_MFP);
2559 break;
2560 case NL80211_IFTYPE_P2P_CLIENT:
2561 case NL80211_IFTYPE_STATION:
2562 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2563 BIT(NL80211_STA_FLAG_TDLS_PEER);
2564 break;
2565 case NL80211_IFTYPE_MESH_POINT:
2566 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2567 BIT(NL80211_STA_FLAG_MFP) |
2568 BIT(NL80211_STA_FLAG_AUTHORIZED);
2569 default:
2570 return -EINVAL;
2571 }
2572
2573 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2574 if (flags[flag]) {
2575 params->sta_flags_set |= (1<<flag);
2576
2577 /* no longer support new API additions in old API */
2578 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2579 return -EINVAL;
2580 }
2581 }
2582
2583 return 0;
2584 }
2585
2586 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2587 int attr)
2588 {
2589 struct nlattr *rate;
2590 u16 bitrate;
2591
2592 rate = nla_nest_start(msg, attr);
2593 if (!rate)
2594 goto nla_put_failure;
2595
2596 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2597 bitrate = cfg80211_calculate_bitrate(info);
2598 if ((bitrate > 0 &&
2599 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate)) ||
2600 ((info->flags & RATE_INFO_FLAGS_MCS) &&
2601 nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2602 ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2603 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2604 ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2605 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2606 goto nla_put_failure;
2607
2608 nla_nest_end(msg, rate);
2609 return true;
2610
2611 nla_put_failure:
2612 return false;
2613 }
2614
2615 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2616 int flags,
2617 struct cfg80211_registered_device *rdev,
2618 struct net_device *dev,
2619 const u8 *mac_addr, struct station_info *sinfo)
2620 {
2621 void *hdr;
2622 struct nlattr *sinfoattr, *bss_param;
2623
2624 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2625 if (!hdr)
2626 return -1;
2627
2628 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2629 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2630 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2631 goto nla_put_failure;
2632
2633 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2634 if (!sinfoattr)
2635 goto nla_put_failure;
2636 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2637 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2638 sinfo->connected_time))
2639 goto nla_put_failure;
2640 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2641 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2642 sinfo->inactive_time))
2643 goto nla_put_failure;
2644 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2645 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2646 sinfo->rx_bytes))
2647 goto nla_put_failure;
2648 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2649 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2650 sinfo->tx_bytes))
2651 goto nla_put_failure;
2652 if ((sinfo->filled & STATION_INFO_LLID) &&
2653 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2654 goto nla_put_failure;
2655 if ((sinfo->filled & STATION_INFO_PLID) &&
2656 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2657 goto nla_put_failure;
2658 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2659 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2660 sinfo->plink_state))
2661 goto nla_put_failure;
2662 switch (rdev->wiphy.signal_type) {
2663 case CFG80211_SIGNAL_TYPE_MBM:
2664 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2665 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2666 sinfo->signal))
2667 goto nla_put_failure;
2668 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2669 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2670 sinfo->signal_avg))
2671 goto nla_put_failure;
2672 break;
2673 default:
2674 break;
2675 }
2676 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2677 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2678 NL80211_STA_INFO_TX_BITRATE))
2679 goto nla_put_failure;
2680 }
2681 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2682 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2683 NL80211_STA_INFO_RX_BITRATE))
2684 goto nla_put_failure;
2685 }
2686 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2687 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2688 sinfo->rx_packets))
2689 goto nla_put_failure;
2690 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2691 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2692 sinfo->tx_packets))
2693 goto nla_put_failure;
2694 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2695 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2696 sinfo->tx_retries))
2697 goto nla_put_failure;
2698 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2699 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2700 sinfo->tx_failed))
2701 goto nla_put_failure;
2702 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2703 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2704 sinfo->beacon_loss_count))
2705 goto nla_put_failure;
2706 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2707 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2708 if (!bss_param)
2709 goto nla_put_failure;
2710
2711 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2712 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2713 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2714 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2715 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2716 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2717 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2718 sinfo->bss_param.dtim_period) ||
2719 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2720 sinfo->bss_param.beacon_interval))
2721 goto nla_put_failure;
2722
2723 nla_nest_end(msg, bss_param);
2724 }
2725 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2726 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2727 sizeof(struct nl80211_sta_flag_update),
2728 &sinfo->sta_flags))
2729 goto nla_put_failure;
2730 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2731 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2732 sinfo->t_offset))
2733 goto nla_put_failure;
2734 nla_nest_end(msg, sinfoattr);
2735
2736 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2737 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2738 sinfo->assoc_req_ies))
2739 goto nla_put_failure;
2740
2741 return genlmsg_end(msg, hdr);
2742
2743 nla_put_failure:
2744 genlmsg_cancel(msg, hdr);
2745 return -EMSGSIZE;
2746 }
2747
2748 static int nl80211_dump_station(struct sk_buff *skb,
2749 struct netlink_callback *cb)
2750 {
2751 struct station_info sinfo;
2752 struct cfg80211_registered_device *dev;
2753 struct net_device *netdev;
2754 u8 mac_addr[ETH_ALEN];
2755 int sta_idx = cb->args[1];
2756 int err;
2757
2758 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2759 if (err)
2760 return err;
2761
2762 if (!dev->ops->dump_station) {
2763 err = -EOPNOTSUPP;
2764 goto out_err;
2765 }
2766
2767 while (1) {
2768 memset(&sinfo, 0, sizeof(sinfo));
2769 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2770 mac_addr, &sinfo);
2771 if (err == -ENOENT)
2772 break;
2773 if (err)
2774 goto out_err;
2775
2776 if (nl80211_send_station(skb,
2777 NETLINK_CB(cb->skb).pid,
2778 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2779 dev, netdev, mac_addr,
2780 &sinfo) < 0)
2781 goto out;
2782
2783 sta_idx++;
2784 }
2785
2786
2787 out:
2788 cb->args[1] = sta_idx;
2789 err = skb->len;
2790 out_err:
2791 nl80211_finish_netdev_dump(dev);
2792
2793 return err;
2794 }
2795
2796 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2797 {
2798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2799 struct net_device *dev = info->user_ptr[1];
2800 struct station_info sinfo;
2801 struct sk_buff *msg;
2802 u8 *mac_addr = NULL;
2803 int err;
2804
2805 memset(&sinfo, 0, sizeof(sinfo));
2806
2807 if (!info->attrs[NL80211_ATTR_MAC])
2808 return -EINVAL;
2809
2810 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2811
2812 if (!rdev->ops->get_station)
2813 return -EOPNOTSUPP;
2814
2815 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2816 if (err)
2817 return err;
2818
2819 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2820 if (!msg)
2821 return -ENOMEM;
2822
2823 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2824 rdev, dev, mac_addr, &sinfo) < 0) {
2825 nlmsg_free(msg);
2826 return -ENOBUFS;
2827 }
2828
2829 return genlmsg_reply(msg, info);
2830 }
2831
2832 /*
2833 * Get vlan interface making sure it is running and on the right wiphy.
2834 */
2835 static struct net_device *get_vlan(struct genl_info *info,
2836 struct cfg80211_registered_device *rdev)
2837 {
2838 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2839 struct net_device *v;
2840 int ret;
2841
2842 if (!vlanattr)
2843 return NULL;
2844
2845 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2846 if (!v)
2847 return ERR_PTR(-ENODEV);
2848
2849 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2850 ret = -EINVAL;
2851 goto error;
2852 }
2853
2854 if (!netif_running(v)) {
2855 ret = -ENETDOWN;
2856 goto error;
2857 }
2858
2859 return v;
2860 error:
2861 dev_put(v);
2862 return ERR_PTR(ret);
2863 }
2864
2865 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2866 {
2867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2868 int err;
2869 struct net_device *dev = info->user_ptr[1];
2870 struct station_parameters params;
2871 u8 *mac_addr = NULL;
2872
2873 memset(&params, 0, sizeof(params));
2874
2875 params.listen_interval = -1;
2876 params.plink_state = -1;
2877
2878 if (info->attrs[NL80211_ATTR_STA_AID])
2879 return -EINVAL;
2880
2881 if (!info->attrs[NL80211_ATTR_MAC])
2882 return -EINVAL;
2883
2884 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2885
2886 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2887 params.supported_rates =
2888 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2889 params.supported_rates_len =
2890 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2891 }
2892
2893 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2894 params.listen_interval =
2895 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2896
2897 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2898 params.ht_capa =
2899 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2900
2901 if (!rdev->ops->change_station)
2902 return -EOPNOTSUPP;
2903
2904 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2905 return -EINVAL;
2906
2907 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2908 params.plink_action =
2909 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2910
2911 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2912 params.plink_state =
2913 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2914
2915 switch (dev->ieee80211_ptr->iftype) {
2916 case NL80211_IFTYPE_AP:
2917 case NL80211_IFTYPE_AP_VLAN:
2918 case NL80211_IFTYPE_P2P_GO:
2919 /* disallow mesh-specific things */
2920 if (params.plink_action)
2921 return -EINVAL;
2922
2923 /* TDLS can't be set, ... */
2924 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2925 return -EINVAL;
2926 /*
2927 * ... but don't bother the driver with it. This works around
2928 * a hostapd/wpa_supplicant issue -- it always includes the
2929 * TLDS_PEER flag in the mask even for AP mode.
2930 */
2931 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2932
2933 /* accept only the listed bits */
2934 if (params.sta_flags_mask &
2935 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2936 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2937 BIT(NL80211_STA_FLAG_WME) |
2938 BIT(NL80211_STA_FLAG_MFP)))
2939 return -EINVAL;
2940
2941 /* must be last in here for error handling */
2942 params.vlan = get_vlan(info, rdev);
2943 if (IS_ERR(params.vlan))
2944 return PTR_ERR(params.vlan);
2945 break;
2946 case NL80211_IFTYPE_P2P_CLIENT:
2947 case NL80211_IFTYPE_STATION:
2948 /*
2949 * Don't allow userspace to change the TDLS_PEER flag,
2950 * but silently ignore attempts to change it since we
2951 * don't have state here to verify that it doesn't try
2952 * to change the flag.
2953 */
2954 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2955 /* fall through */
2956 case NL80211_IFTYPE_ADHOC:
2957 /* disallow things sta doesn't support */
2958 if (params.plink_action)
2959 return -EINVAL;
2960 if (params.ht_capa)
2961 return -EINVAL;
2962 if (params.listen_interval >= 0)
2963 return -EINVAL;
2964 /* reject any changes other than AUTHORIZED */
2965 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2966 return -EINVAL;
2967 break;
2968 case NL80211_IFTYPE_MESH_POINT:
2969 /* disallow things mesh doesn't support */
2970 if (params.vlan)
2971 return -EINVAL;
2972 if (params.ht_capa)
2973 return -EINVAL;
2974 if (params.listen_interval >= 0)
2975 return -EINVAL;
2976 /*
2977 * No special handling for TDLS here -- the userspace
2978 * mesh code doesn't have this bug.
2979 */
2980 if (params.sta_flags_mask &
2981 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2982 BIT(NL80211_STA_FLAG_MFP) |
2983 BIT(NL80211_STA_FLAG_AUTHORIZED)))
2984 return -EINVAL;
2985 break;
2986 default:
2987 return -EOPNOTSUPP;
2988 }
2989
2990 /* be aware of params.vlan when changing code here */
2991
2992 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
2993
2994 if (params.vlan)
2995 dev_put(params.vlan);
2996
2997 return err;
2998 }
2999
3000 static struct nla_policy
3001 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3002 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3003 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3004 };
3005
3006 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3007 {
3008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3009 int err;
3010 struct net_device *dev = info->user_ptr[1];
3011 struct station_parameters params;
3012 u8 *mac_addr = NULL;
3013
3014 memset(&params, 0, sizeof(params));
3015
3016 if (!info->attrs[NL80211_ATTR_MAC])
3017 return -EINVAL;
3018
3019 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3020 return -EINVAL;
3021
3022 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3023 return -EINVAL;
3024
3025 if (!info->attrs[NL80211_ATTR_STA_AID])
3026 return -EINVAL;
3027
3028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3029 params.supported_rates =
3030 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3031 params.supported_rates_len =
3032 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3033 params.listen_interval =
3034 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3035
3036 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3037 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3038 return -EINVAL;
3039
3040 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3041 params.ht_capa =
3042 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3043
3044 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3045 params.plink_action =
3046 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3047
3048 if (!rdev->ops->add_station)
3049 return -EOPNOTSUPP;
3050
3051 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3052 return -EINVAL;
3053
3054 switch (dev->ieee80211_ptr->iftype) {
3055 case NL80211_IFTYPE_AP:
3056 case NL80211_IFTYPE_AP_VLAN:
3057 case NL80211_IFTYPE_P2P_GO:
3058 /* parse WME attributes if sta is WME capable */
3059 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3060 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3061 info->attrs[NL80211_ATTR_STA_WME]) {
3062 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3063 struct nlattr *nla;
3064
3065 nla = info->attrs[NL80211_ATTR_STA_WME];
3066 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3067 nl80211_sta_wme_policy);
3068 if (err)
3069 return err;
3070
3071 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3072 params.uapsd_queues =
3073 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3074 if (params.uapsd_queues &
3075 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3076 return -EINVAL;
3077
3078 if (tb[NL80211_STA_WME_MAX_SP])
3079 params.max_sp =
3080 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3081
3082 if (params.max_sp &
3083 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3084 return -EINVAL;
3085
3086 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3087 }
3088 /* TDLS peers cannot be added */
3089 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3090 return -EINVAL;
3091 /* but don't bother the driver with it */
3092 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3093
3094 /* must be last in here for error handling */
3095 params.vlan = get_vlan(info, rdev);
3096 if (IS_ERR(params.vlan))
3097 return PTR_ERR(params.vlan);
3098 break;
3099 case NL80211_IFTYPE_MESH_POINT:
3100 /* TDLS peers cannot be added */
3101 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3102 return -EINVAL;
3103 break;
3104 case NL80211_IFTYPE_STATION:
3105 /* Only TDLS peers can be added */
3106 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3107 return -EINVAL;
3108 /* Can only add if TDLS ... */
3109 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3110 return -EOPNOTSUPP;
3111 /* ... with external setup is supported */
3112 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3113 return -EOPNOTSUPP;
3114 break;
3115 default:
3116 return -EOPNOTSUPP;
3117 }
3118
3119 /* be aware of params.vlan when changing code here */
3120
3121 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3122
3123 if (params.vlan)
3124 dev_put(params.vlan);
3125 return err;
3126 }
3127
3128 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3129 {
3130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3131 struct net_device *dev = info->user_ptr[1];
3132 u8 *mac_addr = NULL;
3133
3134 if (info->attrs[NL80211_ATTR_MAC])
3135 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3136
3137 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3138 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3139 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3140 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3141 return -EINVAL;
3142
3143 if (!rdev->ops->del_station)
3144 return -EOPNOTSUPP;
3145
3146 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3147 }
3148
3149 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
3150 int flags, struct net_device *dev,
3151 u8 *dst, u8 *next_hop,
3152 struct mpath_info *pinfo)
3153 {
3154 void *hdr;
3155 struct nlattr *pinfoattr;
3156
3157 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
3158 if (!hdr)
3159 return -1;
3160
3161 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3162 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3163 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3164 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3165 goto nla_put_failure;
3166
3167 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3168 if (!pinfoattr)
3169 goto nla_put_failure;
3170 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3171 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3172 pinfo->frame_qlen))
3173 goto nla_put_failure;
3174 if (((pinfo->filled & MPATH_INFO_SN) &&
3175 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3176 ((pinfo->filled & MPATH_INFO_METRIC) &&
3177 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3178 pinfo->metric)) ||
3179 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3180 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3181 pinfo->exptime)) ||
3182 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3183 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3184 pinfo->flags)) ||
3185 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3186 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3187 pinfo->discovery_timeout)) ||
3188 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3189 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3190 pinfo->discovery_retries)))
3191 goto nla_put_failure;
3192
3193 nla_nest_end(msg, pinfoattr);
3194
3195 return genlmsg_end(msg, hdr);
3196
3197 nla_put_failure:
3198 genlmsg_cancel(msg, hdr);
3199 return -EMSGSIZE;
3200 }
3201
3202 static int nl80211_dump_mpath(struct sk_buff *skb,
3203 struct netlink_callback *cb)
3204 {
3205 struct mpath_info pinfo;
3206 struct cfg80211_registered_device *dev;
3207 struct net_device *netdev;
3208 u8 dst[ETH_ALEN];
3209 u8 next_hop[ETH_ALEN];
3210 int path_idx = cb->args[1];
3211 int err;
3212
3213 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3214 if (err)
3215 return err;
3216
3217 if (!dev->ops->dump_mpath) {
3218 err = -EOPNOTSUPP;
3219 goto out_err;
3220 }
3221
3222 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3223 err = -EOPNOTSUPP;
3224 goto out_err;
3225 }
3226
3227 while (1) {
3228 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3229 dst, next_hop, &pinfo);
3230 if (err == -ENOENT)
3231 break;
3232 if (err)
3233 goto out_err;
3234
3235 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
3236 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3237 netdev, dst, next_hop,
3238 &pinfo) < 0)
3239 goto out;
3240
3241 path_idx++;
3242 }
3243
3244
3245 out:
3246 cb->args[1] = path_idx;
3247 err = skb->len;
3248 out_err:
3249 nl80211_finish_netdev_dump(dev);
3250 return err;
3251 }
3252
3253 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3254 {
3255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256 int err;
3257 struct net_device *dev = info->user_ptr[1];
3258 struct mpath_info pinfo;
3259 struct sk_buff *msg;
3260 u8 *dst = NULL;
3261 u8 next_hop[ETH_ALEN];
3262
3263 memset(&pinfo, 0, sizeof(pinfo));
3264
3265 if (!info->attrs[NL80211_ATTR_MAC])
3266 return -EINVAL;
3267
3268 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3269
3270 if (!rdev->ops->get_mpath)
3271 return -EOPNOTSUPP;
3272
3273 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3274 return -EOPNOTSUPP;
3275
3276 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3277 if (err)
3278 return err;
3279
3280 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3281 if (!msg)
3282 return -ENOMEM;
3283
3284 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3285 dev, dst, next_hop, &pinfo) < 0) {
3286 nlmsg_free(msg);
3287 return -ENOBUFS;
3288 }
3289
3290 return genlmsg_reply(msg, info);
3291 }
3292
3293 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3294 {
3295 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3296 struct net_device *dev = info->user_ptr[1];
3297 u8 *dst = NULL;
3298 u8 *next_hop = NULL;
3299
3300 if (!info->attrs[NL80211_ATTR_MAC])
3301 return -EINVAL;
3302
3303 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3304 return -EINVAL;
3305
3306 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3307 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3308
3309 if (!rdev->ops->change_mpath)
3310 return -EOPNOTSUPP;
3311
3312 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3313 return -EOPNOTSUPP;
3314
3315 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3316 }
3317
3318 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3319 {
3320 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3321 struct net_device *dev = info->user_ptr[1];
3322 u8 *dst = NULL;
3323 u8 *next_hop = NULL;
3324
3325 if (!info->attrs[NL80211_ATTR_MAC])
3326 return -EINVAL;
3327
3328 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3329 return -EINVAL;
3330
3331 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3332 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3333
3334 if (!rdev->ops->add_mpath)
3335 return -EOPNOTSUPP;
3336
3337 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3338 return -EOPNOTSUPP;
3339
3340 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3341 }
3342
3343 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3344 {
3345 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3346 struct net_device *dev = info->user_ptr[1];
3347 u8 *dst = NULL;
3348
3349 if (info->attrs[NL80211_ATTR_MAC])
3350 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3351
3352 if (!rdev->ops->del_mpath)
3353 return -EOPNOTSUPP;
3354
3355 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3356 }
3357
3358 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3359 {
3360 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3361 struct net_device *dev = info->user_ptr[1];
3362 struct bss_parameters params;
3363
3364 memset(&params, 0, sizeof(params));
3365 /* default to not changing parameters */
3366 params.use_cts_prot = -1;
3367 params.use_short_preamble = -1;
3368 params.use_short_slot_time = -1;
3369 params.ap_isolate = -1;
3370 params.ht_opmode = -1;
3371
3372 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3373 params.use_cts_prot =
3374 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3375 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3376 params.use_short_preamble =
3377 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3378 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3379 params.use_short_slot_time =
3380 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3381 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3382 params.basic_rates =
3383 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3384 params.basic_rates_len =
3385 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3386 }
3387 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3388 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3389 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3390 params.ht_opmode =
3391 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3392
3393 if (!rdev->ops->change_bss)
3394 return -EOPNOTSUPP;
3395
3396 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3398 return -EOPNOTSUPP;
3399
3400 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3401 }
3402
3403 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3404 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3405 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3406 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3407 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3408 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3409 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3410 };
3411
3412 static int parse_reg_rule(struct nlattr *tb[],
3413 struct ieee80211_reg_rule *reg_rule)
3414 {
3415 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3416 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3417
3418 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3419 return -EINVAL;
3420 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3421 return -EINVAL;
3422 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3423 return -EINVAL;
3424 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3425 return -EINVAL;
3426 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3427 return -EINVAL;
3428
3429 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3430
3431 freq_range->start_freq_khz =
3432 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3433 freq_range->end_freq_khz =
3434 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3435 freq_range->max_bandwidth_khz =
3436 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3437
3438 power_rule->max_eirp =
3439 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3440
3441 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3442 power_rule->max_antenna_gain =
3443 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3444
3445 return 0;
3446 }
3447
3448 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3449 {
3450 int r;
3451 char *data = NULL;
3452
3453 /*
3454 * You should only get this when cfg80211 hasn't yet initialized
3455 * completely when built-in to the kernel right between the time
3456 * window between nl80211_init() and regulatory_init(), if that is
3457 * even possible.
3458 */
3459 mutex_lock(&cfg80211_mutex);
3460 if (unlikely(!cfg80211_regdomain)) {
3461 mutex_unlock(&cfg80211_mutex);
3462 return -EINPROGRESS;
3463 }
3464 mutex_unlock(&cfg80211_mutex);
3465
3466 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3467 return -EINVAL;
3468
3469 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3470
3471 r = regulatory_hint_user(data);
3472
3473 return r;
3474 }
3475
3476 static int nl80211_get_mesh_config(struct sk_buff *skb,
3477 struct genl_info *info)
3478 {
3479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3480 struct net_device *dev = info->user_ptr[1];
3481 struct wireless_dev *wdev = dev->ieee80211_ptr;
3482 struct mesh_config cur_params;
3483 int err = 0;
3484 void *hdr;
3485 struct nlattr *pinfoattr;
3486 struct sk_buff *msg;
3487
3488 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3489 return -EOPNOTSUPP;
3490
3491 if (!rdev->ops->get_mesh_config)
3492 return -EOPNOTSUPP;
3493
3494 wdev_lock(wdev);
3495 /* If not connected, get default parameters */
3496 if (!wdev->mesh_id_len)
3497 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3498 else
3499 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3500 &cur_params);
3501 wdev_unlock(wdev);
3502
3503 if (err)
3504 return err;
3505
3506 /* Draw up a netlink message to send back */
3507 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3508 if (!msg)
3509 return -ENOMEM;
3510 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3511 NL80211_CMD_GET_MESH_CONFIG);
3512 if (!hdr)
3513 goto out;
3514 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3515 if (!pinfoattr)
3516 goto nla_put_failure;
3517 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3518 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3519 cur_params.dot11MeshRetryTimeout) ||
3520 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3521 cur_params.dot11MeshConfirmTimeout) ||
3522 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3523 cur_params.dot11MeshHoldingTimeout) ||
3524 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3525 cur_params.dot11MeshMaxPeerLinks) ||
3526 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3527 cur_params.dot11MeshMaxRetries) ||
3528 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3529 cur_params.dot11MeshTTL) ||
3530 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3531 cur_params.element_ttl) ||
3532 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3533 cur_params.auto_open_plinks) ||
3534 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3535 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3536 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3537 cur_params.dot11MeshHWMPmaxPREQretries) ||
3538 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3539 cur_params.path_refresh_time) ||
3540 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3541 cur_params.min_discovery_timeout) ||
3542 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3543 cur_params.dot11MeshHWMPactivePathTimeout) ||
3544 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3545 cur_params.dot11MeshHWMPpreqMinInterval) ||
3546 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3547 cur_params.dot11MeshHWMPperrMinInterval) ||
3548 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3549 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3550 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3551 cur_params.dot11MeshHWMPRootMode) ||
3552 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3553 cur_params.dot11MeshHWMPRannInterval) ||
3554 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3555 cur_params.dot11MeshGateAnnouncementProtocol) ||
3556 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3557 cur_params.dot11MeshForwarding) ||
3558 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3559 cur_params.rssi_threshold) ||
3560 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3561 cur_params.ht_opmode) ||
3562 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3563 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3564 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3565 cur_params.dot11MeshHWMProotInterval) ||
3566 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3567 cur_params.dot11MeshHWMPconfirmationInterval))
3568 goto nla_put_failure;
3569 nla_nest_end(msg, pinfoattr);
3570 genlmsg_end(msg, hdr);
3571 return genlmsg_reply(msg, info);
3572
3573 nla_put_failure:
3574 genlmsg_cancel(msg, hdr);
3575 out:
3576 nlmsg_free(msg);
3577 return -ENOBUFS;
3578 }
3579
3580 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3581 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3582 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3583 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3584 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3585 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3586 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3587 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3588 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3589 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3590 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3591 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3592 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3593 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3594 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3595 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3596 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3597 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3598 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3599 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3600 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3601 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3602 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3603 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3604 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3605 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3606 };
3607
3608 static const struct nla_policy
3609 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3610 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3611 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3612 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3613 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3614 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3615 .len = IEEE80211_MAX_DATA_LEN },
3616 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3617 };
3618
3619 static int nl80211_parse_mesh_config(struct genl_info *info,
3620 struct mesh_config *cfg,
3621 u32 *mask_out)
3622 {
3623 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3624 u32 mask = 0;
3625
3626 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3627 do {\
3628 if (table[attr_num]) {\
3629 cfg->param = nla_fn(table[attr_num]); \
3630 mask |= (1 << (attr_num - 1)); \
3631 } \
3632 } while (0);\
3633
3634
3635 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3636 return -EINVAL;
3637 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3638 info->attrs[NL80211_ATTR_MESH_CONFIG],
3639 nl80211_meshconf_params_policy))
3640 return -EINVAL;
3641
3642 /* This makes sure that there aren't more than 32 mesh config
3643 * parameters (otherwise our bitfield scheme would not work.) */
3644 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3645
3646 /* Fill in the params struct */
3647 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3648 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3649 nla_get_u16);
3650 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3651 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3652 nla_get_u16);
3653 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3654 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3655 nla_get_u16);
3656 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3657 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3658 nla_get_u16);
3659 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3660 mask, NL80211_MESHCONF_MAX_RETRIES,
3661 nla_get_u8);
3662 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3663 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3664 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3665 mask, NL80211_MESHCONF_ELEMENT_TTL,
3666 nla_get_u8);
3667 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3668 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3669 nla_get_u8);
3670 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3671 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3672 nla_get_u32);
3673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3674 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3675 nla_get_u8);
3676 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3677 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3678 nla_get_u32);
3679 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3680 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3681 nla_get_u16);
3682 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3683 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3684 nla_get_u32);
3685 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3686 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3687 nla_get_u16);
3688 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3689 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3690 nla_get_u16);
3691 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3692 dot11MeshHWMPnetDiameterTraversalTime, mask,
3693 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3694 nla_get_u16);
3695 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3696 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3697 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3698 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3699 nla_get_u16);
3700 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3701 dot11MeshGateAnnouncementProtocol, mask,
3702 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3703 nla_get_u8);
3704 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3705 mask, NL80211_MESHCONF_FORWARDING,
3706 nla_get_u8);
3707 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3708 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3709 nla_get_u32);
3710 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3711 mask, NL80211_MESHCONF_HT_OPMODE,
3712 nla_get_u16);
3713 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3714 mask,
3715 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3716 nla_get_u32);
3717 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3718 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3719 nla_get_u16);
3720 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3721 dot11MeshHWMPconfirmationInterval, mask,
3722 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3723 nla_get_u16);
3724 if (mask_out)
3725 *mask_out = mask;
3726
3727 return 0;
3728
3729 #undef FILL_IN_MESH_PARAM_IF_SET
3730 }
3731
3732 static int nl80211_parse_mesh_setup(struct genl_info *info,
3733 struct mesh_setup *setup)
3734 {
3735 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3736
3737 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3738 return -EINVAL;
3739 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3740 info->attrs[NL80211_ATTR_MESH_SETUP],
3741 nl80211_mesh_setup_params_policy))
3742 return -EINVAL;
3743
3744 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3745 setup->sync_method =
3746 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3747 IEEE80211_SYNC_METHOD_VENDOR :
3748 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3749
3750 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3751 setup->path_sel_proto =
3752 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3753 IEEE80211_PATH_PROTOCOL_VENDOR :
3754 IEEE80211_PATH_PROTOCOL_HWMP;
3755
3756 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3757 setup->path_metric =
3758 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3759 IEEE80211_PATH_METRIC_VENDOR :
3760 IEEE80211_PATH_METRIC_AIRTIME;
3761
3762
3763 if (tb[NL80211_MESH_SETUP_IE]) {
3764 struct nlattr *ieattr =
3765 tb[NL80211_MESH_SETUP_IE];
3766 if (!is_valid_ie_attr(ieattr))
3767 return -EINVAL;
3768 setup->ie = nla_data(ieattr);
3769 setup->ie_len = nla_len(ieattr);
3770 }
3771 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3772 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3773
3774 return 0;
3775 }
3776
3777 static int nl80211_update_mesh_config(struct sk_buff *skb,
3778 struct genl_info *info)
3779 {
3780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3781 struct net_device *dev = info->user_ptr[1];
3782 struct wireless_dev *wdev = dev->ieee80211_ptr;
3783 struct mesh_config cfg;
3784 u32 mask;
3785 int err;
3786
3787 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3788 return -EOPNOTSUPP;
3789
3790 if (!rdev->ops->update_mesh_config)
3791 return -EOPNOTSUPP;
3792
3793 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3794 if (err)
3795 return err;
3796
3797 wdev_lock(wdev);
3798 if (!wdev->mesh_id_len)
3799 err = -ENOLINK;
3800
3801 if (!err)
3802 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3803 mask, &cfg);
3804
3805 wdev_unlock(wdev);
3806
3807 return err;
3808 }
3809
3810 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3811 {
3812 struct sk_buff *msg;
3813 void *hdr = NULL;
3814 struct nlattr *nl_reg_rules;
3815 unsigned int i;
3816 int err = -EINVAL;
3817
3818 mutex_lock(&cfg80211_mutex);
3819
3820 if (!cfg80211_regdomain)
3821 goto out;
3822
3823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3824 if (!msg) {
3825 err = -ENOBUFS;
3826 goto out;
3827 }
3828
3829 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3830 NL80211_CMD_GET_REG);
3831 if (!hdr)
3832 goto put_failure;
3833
3834 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
3835 cfg80211_regdomain->alpha2) ||
3836 (cfg80211_regdomain->dfs_region &&
3837 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
3838 cfg80211_regdomain->dfs_region)))
3839 goto nla_put_failure;
3840
3841 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3842 if (!nl_reg_rules)
3843 goto nla_put_failure;
3844
3845 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3846 struct nlattr *nl_reg_rule;
3847 const struct ieee80211_reg_rule *reg_rule;
3848 const struct ieee80211_freq_range *freq_range;
3849 const struct ieee80211_power_rule *power_rule;
3850
3851 reg_rule = &cfg80211_regdomain->reg_rules[i];
3852 freq_range = &reg_rule->freq_range;
3853 power_rule = &reg_rule->power_rule;
3854
3855 nl_reg_rule = nla_nest_start(msg, i);
3856 if (!nl_reg_rule)
3857 goto nla_put_failure;
3858
3859 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3860 reg_rule->flags) ||
3861 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
3862 freq_range->start_freq_khz) ||
3863 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
3864 freq_range->end_freq_khz) ||
3865 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3866 freq_range->max_bandwidth_khz) ||
3867 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3868 power_rule->max_antenna_gain) ||
3869 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3870 power_rule->max_eirp))
3871 goto nla_put_failure;
3872
3873 nla_nest_end(msg, nl_reg_rule);
3874 }
3875
3876 nla_nest_end(msg, nl_reg_rules);
3877
3878 genlmsg_end(msg, hdr);
3879 err = genlmsg_reply(msg, info);
3880 goto out;
3881
3882 nla_put_failure:
3883 genlmsg_cancel(msg, hdr);
3884 put_failure:
3885 nlmsg_free(msg);
3886 err = -EMSGSIZE;
3887 out:
3888 mutex_unlock(&cfg80211_mutex);
3889 return err;
3890 }
3891
3892 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3893 {
3894 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3895 struct nlattr *nl_reg_rule;
3896 char *alpha2 = NULL;
3897 int rem_reg_rules = 0, r = 0;
3898 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3899 u8 dfs_region = 0;
3900 struct ieee80211_regdomain *rd = NULL;
3901
3902 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3903 return -EINVAL;
3904
3905 if (!info->attrs[NL80211_ATTR_REG_RULES])
3906 return -EINVAL;
3907
3908 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3909
3910 if (info->attrs[NL80211_ATTR_DFS_REGION])
3911 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3912
3913 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3914 rem_reg_rules) {
3915 num_rules++;
3916 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3917 return -EINVAL;
3918 }
3919
3920 mutex_lock(&cfg80211_mutex);
3921
3922 if (!reg_is_valid_request(alpha2)) {
3923 r = -EINVAL;
3924 goto bad_reg;
3925 }
3926
3927 size_of_regd = sizeof(struct ieee80211_regdomain) +
3928 (num_rules * sizeof(struct ieee80211_reg_rule));
3929
3930 rd = kzalloc(size_of_regd, GFP_KERNEL);
3931 if (!rd) {
3932 r = -ENOMEM;
3933 goto bad_reg;
3934 }
3935
3936 rd->n_reg_rules = num_rules;
3937 rd->alpha2[0] = alpha2[0];
3938 rd->alpha2[1] = alpha2[1];
3939
3940 /*
3941 * Disable DFS master mode if the DFS region was
3942 * not supported or known on this kernel.
3943 */
3944 if (reg_supported_dfs_region(dfs_region))
3945 rd->dfs_region = dfs_region;
3946
3947 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3948 rem_reg_rules) {
3949 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3950 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3951 reg_rule_policy);
3952 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3953 if (r)
3954 goto bad_reg;
3955
3956 rule_idx++;
3957
3958 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3959 r = -EINVAL;
3960 goto bad_reg;
3961 }
3962 }
3963
3964 BUG_ON(rule_idx != num_rules);
3965
3966 r = set_regdom(rd);
3967
3968 mutex_unlock(&cfg80211_mutex);
3969
3970 return r;
3971
3972 bad_reg:
3973 mutex_unlock(&cfg80211_mutex);
3974 kfree(rd);
3975 return r;
3976 }
3977
3978 static int validate_scan_freqs(struct nlattr *freqs)
3979 {
3980 struct nlattr *attr1, *attr2;
3981 int n_channels = 0, tmp1, tmp2;
3982
3983 nla_for_each_nested(attr1, freqs, tmp1) {
3984 n_channels++;
3985 /*
3986 * Some hardware has a limited channel list for
3987 * scanning, and it is pretty much nonsensical
3988 * to scan for a channel twice, so disallow that
3989 * and don't require drivers to check that the
3990 * channel list they get isn't longer than what
3991 * they can scan, as long as they can scan all
3992 * the channels they registered at once.
3993 */
3994 nla_for_each_nested(attr2, freqs, tmp2)
3995 if (attr1 != attr2 &&
3996 nla_get_u32(attr1) == nla_get_u32(attr2))
3997 return 0;
3998 }
3999
4000 return n_channels;
4001 }
4002
4003 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4004 {
4005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4006 struct net_device *dev = info->user_ptr[1];
4007 struct cfg80211_scan_request *request;
4008 struct nlattr *attr;
4009 struct wiphy *wiphy;
4010 int err, tmp, n_ssids = 0, n_channels, i;
4011 size_t ie_len;
4012
4013 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4014 return -EINVAL;
4015
4016 wiphy = &rdev->wiphy;
4017
4018 if (!rdev->ops->scan)
4019 return -EOPNOTSUPP;
4020
4021 if (rdev->scan_req)
4022 return -EBUSY;
4023
4024 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4025 n_channels = validate_scan_freqs(
4026 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4027 if (!n_channels)
4028 return -EINVAL;
4029 } else {
4030 enum ieee80211_band band;
4031 n_channels = 0;
4032
4033 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4034 if (wiphy->bands[band])
4035 n_channels += wiphy->bands[band]->n_channels;
4036 }
4037
4038 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4039 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4040 n_ssids++;
4041
4042 if (n_ssids > wiphy->max_scan_ssids)
4043 return -EINVAL;
4044
4045 if (info->attrs[NL80211_ATTR_IE])
4046 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4047 else
4048 ie_len = 0;
4049
4050 if (ie_len > wiphy->max_scan_ie_len)
4051 return -EINVAL;
4052
4053 request = kzalloc(sizeof(*request)
4054 + sizeof(*request->ssids) * n_ssids
4055 + sizeof(*request->channels) * n_channels
4056 + ie_len, GFP_KERNEL);
4057 if (!request)
4058 return -ENOMEM;
4059
4060 if (n_ssids)
4061 request->ssids = (void *)&request->channels[n_channels];
4062 request->n_ssids = n_ssids;
4063 if (ie_len) {
4064 if (request->ssids)
4065 request->ie = (void *)(request->ssids + n_ssids);
4066 else
4067 request->ie = (void *)(request->channels + n_channels);
4068 }
4069
4070 i = 0;
4071 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4072 /* user specified, bail out if channel not found */
4073 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4074 struct ieee80211_channel *chan;
4075
4076 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4077
4078 if (!chan) {
4079 err = -EINVAL;
4080 goto out_free;
4081 }
4082
4083 /* ignore disabled channels */
4084 if (chan->flags & IEEE80211_CHAN_DISABLED)
4085 continue;
4086
4087 request->channels[i] = chan;
4088 i++;
4089 }
4090 } else {
4091 enum ieee80211_band band;
4092
4093 /* all channels */
4094 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4095 int j;
4096 if (!wiphy->bands[band])
4097 continue;
4098 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4099 struct ieee80211_channel *chan;
4100
4101 chan = &wiphy->bands[band]->channels[j];
4102
4103 if (chan->flags & IEEE80211_CHAN_DISABLED)
4104 continue;
4105
4106 request->channels[i] = chan;
4107 i++;
4108 }
4109 }
4110 }
4111
4112 if (!i) {
4113 err = -EINVAL;
4114 goto out_free;
4115 }
4116
4117 request->n_channels = i;
4118
4119 i = 0;
4120 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4121 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4122 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4123 err = -EINVAL;
4124 goto out_free;
4125 }
4126 request->ssids[i].ssid_len = nla_len(attr);
4127 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4128 i++;
4129 }
4130 }
4131
4132 if (info->attrs[NL80211_ATTR_IE]) {
4133 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4134 memcpy((void *)request->ie,
4135 nla_data(info->attrs[NL80211_ATTR_IE]),
4136 request->ie_len);
4137 }
4138
4139 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4140 if (wiphy->bands[i])
4141 request->rates[i] =
4142 (1 << wiphy->bands[i]->n_bitrates) - 1;
4143
4144 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4145 nla_for_each_nested(attr,
4146 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4147 tmp) {
4148 enum ieee80211_band band = nla_type(attr);
4149
4150 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4151 err = -EINVAL;
4152 goto out_free;
4153 }
4154 err = ieee80211_get_ratemask(wiphy->bands[band],
4155 nla_data(attr),
4156 nla_len(attr),
4157 &request->rates[band]);
4158 if (err)
4159 goto out_free;
4160 }
4161 }
4162
4163 request->no_cck =
4164 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4165
4166 request->dev = dev;
4167 request->wiphy = &rdev->wiphy;
4168
4169 rdev->scan_req = request;
4170 err = rdev->ops->scan(&rdev->wiphy, dev, request);
4171
4172 if (!err) {
4173 nl80211_send_scan_start(rdev, dev);
4174 dev_hold(dev);
4175 } else {
4176 out_free:
4177 rdev->scan_req = NULL;
4178 kfree(request);
4179 }
4180
4181 return err;
4182 }
4183
4184 static int nl80211_start_sched_scan(struct sk_buff *skb,
4185 struct genl_info *info)
4186 {
4187 struct cfg80211_sched_scan_request *request;
4188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4189 struct net_device *dev = info->user_ptr[1];
4190 struct nlattr *attr;
4191 struct wiphy *wiphy;
4192 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4193 u32 interval;
4194 enum ieee80211_band band;
4195 size_t ie_len;
4196 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4197
4198 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4199 !rdev->ops->sched_scan_start)
4200 return -EOPNOTSUPP;
4201
4202 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4203 return -EINVAL;
4204
4205 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4206 return -EINVAL;
4207
4208 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4209 if (interval == 0)
4210 return -EINVAL;
4211
4212 wiphy = &rdev->wiphy;
4213
4214 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4215 n_channels = validate_scan_freqs(
4216 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4217 if (!n_channels)
4218 return -EINVAL;
4219 } else {
4220 n_channels = 0;
4221
4222 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4223 if (wiphy->bands[band])
4224 n_channels += wiphy->bands[band]->n_channels;
4225 }
4226
4227 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4228 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4229 tmp)
4230 n_ssids++;
4231
4232 if (n_ssids > wiphy->max_sched_scan_ssids)
4233 return -EINVAL;
4234
4235 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4236 nla_for_each_nested(attr,
4237 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4238 tmp)
4239 n_match_sets++;
4240
4241 if (n_match_sets > wiphy->max_match_sets)
4242 return -EINVAL;
4243
4244 if (info->attrs[NL80211_ATTR_IE])
4245 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4246 else
4247 ie_len = 0;
4248
4249 if (ie_len > wiphy->max_sched_scan_ie_len)
4250 return -EINVAL;
4251
4252 mutex_lock(&rdev->sched_scan_mtx);
4253
4254 if (rdev->sched_scan_req) {
4255 err = -EINPROGRESS;
4256 goto out;
4257 }
4258
4259 request = kzalloc(sizeof(*request)
4260 + sizeof(*request->ssids) * n_ssids
4261 + sizeof(*request->match_sets) * n_match_sets
4262 + sizeof(*request->channels) * n_channels
4263 + ie_len, GFP_KERNEL);
4264 if (!request) {
4265 err = -ENOMEM;
4266 goto out;
4267 }
4268
4269 if (n_ssids)
4270 request->ssids = (void *)&request->channels[n_channels];
4271 request->n_ssids = n_ssids;
4272 if (ie_len) {
4273 if (request->ssids)
4274 request->ie = (void *)(request->ssids + n_ssids);
4275 else
4276 request->ie = (void *)(request->channels + n_channels);
4277 }
4278
4279 if (n_match_sets) {
4280 if (request->ie)
4281 request->match_sets = (void *)(request->ie + ie_len);
4282 else if (request->ssids)
4283 request->match_sets =
4284 (void *)(request->ssids + n_ssids);
4285 else
4286 request->match_sets =
4287 (void *)(request->channels + n_channels);
4288 }
4289 request->n_match_sets = n_match_sets;
4290
4291 i = 0;
4292 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4293 /* user specified, bail out if channel not found */
4294 nla_for_each_nested(attr,
4295 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4296 tmp) {
4297 struct ieee80211_channel *chan;
4298
4299 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4300
4301 if (!chan) {
4302 err = -EINVAL;
4303 goto out_free;
4304 }
4305
4306 /* ignore disabled channels */
4307 if (chan->flags & IEEE80211_CHAN_DISABLED)
4308 continue;
4309
4310 request->channels[i] = chan;
4311 i++;
4312 }
4313 } else {
4314 /* all channels */
4315 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4316 int j;
4317 if (!wiphy->bands[band])
4318 continue;
4319 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4320 struct ieee80211_channel *chan;
4321
4322 chan = &wiphy->bands[band]->channels[j];
4323
4324 if (chan->flags & IEEE80211_CHAN_DISABLED)
4325 continue;
4326
4327 request->channels[i] = chan;
4328 i++;
4329 }
4330 }
4331 }
4332
4333 if (!i) {
4334 err = -EINVAL;
4335 goto out_free;
4336 }
4337
4338 request->n_channels = i;
4339
4340 i = 0;
4341 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4342 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4343 tmp) {
4344 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4345 err = -EINVAL;
4346 goto out_free;
4347 }
4348 request->ssids[i].ssid_len = nla_len(attr);
4349 memcpy(request->ssids[i].ssid, nla_data(attr),
4350 nla_len(attr));
4351 i++;
4352 }
4353 }
4354
4355 i = 0;
4356 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4357 nla_for_each_nested(attr,
4358 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4359 tmp) {
4360 struct nlattr *ssid;
4361
4362 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4363 nla_data(attr), nla_len(attr),
4364 nl80211_match_policy);
4365 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4366 if (ssid) {
4367 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4368 err = -EINVAL;
4369 goto out_free;
4370 }
4371 memcpy(request->match_sets[i].ssid.ssid,
4372 nla_data(ssid), nla_len(ssid));
4373 request->match_sets[i].ssid.ssid_len =
4374 nla_len(ssid);
4375 }
4376 i++;
4377 }
4378 }
4379
4380 if (info->attrs[NL80211_ATTR_IE]) {
4381 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4382 memcpy((void *)request->ie,
4383 nla_data(info->attrs[NL80211_ATTR_IE]),
4384 request->ie_len);
4385 }
4386
4387 request->dev = dev;
4388 request->wiphy = &rdev->wiphy;
4389 request->interval = interval;
4390
4391 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4392 if (!err) {
4393 rdev->sched_scan_req = request;
4394 nl80211_send_sched_scan(rdev, dev,
4395 NL80211_CMD_START_SCHED_SCAN);
4396 goto out;
4397 }
4398
4399 out_free:
4400 kfree(request);
4401 out:
4402 mutex_unlock(&rdev->sched_scan_mtx);
4403 return err;
4404 }
4405
4406 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4407 struct genl_info *info)
4408 {
4409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4410 int err;
4411
4412 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4413 !rdev->ops->sched_scan_stop)
4414 return -EOPNOTSUPP;
4415
4416 mutex_lock(&rdev->sched_scan_mtx);
4417 err = __cfg80211_stop_sched_scan(rdev, false);
4418 mutex_unlock(&rdev->sched_scan_mtx);
4419
4420 return err;
4421 }
4422
4423 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4424 u32 seq, int flags,
4425 struct cfg80211_registered_device *rdev,
4426 struct wireless_dev *wdev,
4427 struct cfg80211_internal_bss *intbss)
4428 {
4429 struct cfg80211_bss *res = &intbss->pub;
4430 void *hdr;
4431 struct nlattr *bss;
4432
4433 ASSERT_WDEV_LOCK(wdev);
4434
4435 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4436 NL80211_CMD_NEW_SCAN_RESULTS);
4437 if (!hdr)
4438 return -1;
4439
4440 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4441
4442 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4443 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4444 goto nla_put_failure;
4445
4446 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4447 if (!bss)
4448 goto nla_put_failure;
4449 if ((!is_zero_ether_addr(res->bssid) &&
4450 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4451 (res->information_elements && res->len_information_elements &&
4452 nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4453 res->len_information_elements,
4454 res->information_elements)) ||
4455 (res->beacon_ies && res->len_beacon_ies &&
4456 res->beacon_ies != res->information_elements &&
4457 nla_put(msg, NL80211_BSS_BEACON_IES,
4458 res->len_beacon_ies, res->beacon_ies)))
4459 goto nla_put_failure;
4460 if (res->tsf &&
4461 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4462 goto nla_put_failure;
4463 if (res->beacon_interval &&
4464 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4465 goto nla_put_failure;
4466 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4467 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4468 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4469 jiffies_to_msecs(jiffies - intbss->ts)))
4470 goto nla_put_failure;
4471
4472 switch (rdev->wiphy.signal_type) {
4473 case CFG80211_SIGNAL_TYPE_MBM:
4474 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4475 goto nla_put_failure;
4476 break;
4477 case CFG80211_SIGNAL_TYPE_UNSPEC:
4478 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4479 goto nla_put_failure;
4480 break;
4481 default:
4482 break;
4483 }
4484
4485 switch (wdev->iftype) {
4486 case NL80211_IFTYPE_P2P_CLIENT:
4487 case NL80211_IFTYPE_STATION:
4488 if (intbss == wdev->current_bss &&
4489 nla_put_u32(msg, NL80211_BSS_STATUS,
4490 NL80211_BSS_STATUS_ASSOCIATED))
4491 goto nla_put_failure;
4492 break;
4493 case NL80211_IFTYPE_ADHOC:
4494 if (intbss == wdev->current_bss &&
4495 nla_put_u32(msg, NL80211_BSS_STATUS,
4496 NL80211_BSS_STATUS_IBSS_JOINED))
4497 goto nla_put_failure;
4498 break;
4499 default:
4500 break;
4501 }
4502
4503 nla_nest_end(msg, bss);
4504
4505 return genlmsg_end(msg, hdr);
4506
4507 nla_put_failure:
4508 genlmsg_cancel(msg, hdr);
4509 return -EMSGSIZE;
4510 }
4511
4512 static int nl80211_dump_scan(struct sk_buff *skb,
4513 struct netlink_callback *cb)
4514 {
4515 struct cfg80211_registered_device *rdev;
4516 struct net_device *dev;
4517 struct cfg80211_internal_bss *scan;
4518 struct wireless_dev *wdev;
4519 int start = cb->args[1], idx = 0;
4520 int err;
4521
4522 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4523 if (err)
4524 return err;
4525
4526 wdev = dev->ieee80211_ptr;
4527
4528 wdev_lock(wdev);
4529 spin_lock_bh(&rdev->bss_lock);
4530 cfg80211_bss_expire(rdev);
4531
4532 cb->seq = rdev->bss_generation;
4533
4534 list_for_each_entry(scan, &rdev->bss_list, list) {
4535 if (++idx <= start)
4536 continue;
4537 if (nl80211_send_bss(skb, cb,
4538 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4539 rdev, wdev, scan) < 0) {
4540 idx--;
4541 break;
4542 }
4543 }
4544
4545 spin_unlock_bh(&rdev->bss_lock);
4546 wdev_unlock(wdev);
4547
4548 cb->args[1] = idx;
4549 nl80211_finish_netdev_dump(rdev);
4550
4551 return skb->len;
4552 }
4553
4554 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4555 int flags, struct net_device *dev,
4556 struct survey_info *survey)
4557 {
4558 void *hdr;
4559 struct nlattr *infoattr;
4560
4561 hdr = nl80211hdr_put(msg, pid, seq, flags,
4562 NL80211_CMD_NEW_SURVEY_RESULTS);
4563 if (!hdr)
4564 return -ENOMEM;
4565
4566 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4567 goto nla_put_failure;
4568
4569 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4570 if (!infoattr)
4571 goto nla_put_failure;
4572
4573 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4574 survey->channel->center_freq))
4575 goto nla_put_failure;
4576
4577 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4578 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4579 goto nla_put_failure;
4580 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4581 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4582 goto nla_put_failure;
4583 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4584 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4585 survey->channel_time))
4586 goto nla_put_failure;
4587 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4588 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4589 survey->channel_time_busy))
4590 goto nla_put_failure;
4591 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4592 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4593 survey->channel_time_ext_busy))
4594 goto nla_put_failure;
4595 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4596 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4597 survey->channel_time_rx))
4598 goto nla_put_failure;
4599 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4600 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4601 survey->channel_time_tx))
4602 goto nla_put_failure;
4603
4604 nla_nest_end(msg, infoattr);
4605
4606 return genlmsg_end(msg, hdr);
4607
4608 nla_put_failure:
4609 genlmsg_cancel(msg, hdr);
4610 return -EMSGSIZE;
4611 }
4612
4613 static int nl80211_dump_survey(struct sk_buff *skb,
4614 struct netlink_callback *cb)
4615 {
4616 struct survey_info survey;
4617 struct cfg80211_registered_device *dev;
4618 struct net_device *netdev;
4619 int survey_idx = cb->args[1];
4620 int res;
4621
4622 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4623 if (res)
4624 return res;
4625
4626 if (!dev->ops->dump_survey) {
4627 res = -EOPNOTSUPP;
4628 goto out_err;
4629 }
4630
4631 while (1) {
4632 struct ieee80211_channel *chan;
4633
4634 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4635 &survey);
4636 if (res == -ENOENT)
4637 break;
4638 if (res)
4639 goto out_err;
4640
4641 /* Survey without a channel doesn't make sense */
4642 if (!survey.channel) {
4643 res = -EINVAL;
4644 goto out;
4645 }
4646
4647 chan = ieee80211_get_channel(&dev->wiphy,
4648 survey.channel->center_freq);
4649 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4650 survey_idx++;
4651 continue;
4652 }
4653
4654 if (nl80211_send_survey(skb,
4655 NETLINK_CB(cb->skb).pid,
4656 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4657 netdev,
4658 &survey) < 0)
4659 goto out;
4660 survey_idx++;
4661 }
4662
4663 out:
4664 cb->args[1] = survey_idx;
4665 res = skb->len;
4666 out_err:
4667 nl80211_finish_netdev_dump(dev);
4668 return res;
4669 }
4670
4671 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4672 {
4673 return auth_type <= NL80211_AUTHTYPE_MAX;
4674 }
4675
4676 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4677 {
4678 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4679 NL80211_WPA_VERSION_2));
4680 }
4681
4682 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4683 {
4684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4685 struct net_device *dev = info->user_ptr[1];
4686 struct ieee80211_channel *chan;
4687 const u8 *bssid, *ssid, *ie = NULL;
4688 int err, ssid_len, ie_len = 0;
4689 enum nl80211_auth_type auth_type;
4690 struct key_parse key;
4691 bool local_state_change;
4692
4693 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4694 return -EINVAL;
4695
4696 if (!info->attrs[NL80211_ATTR_MAC])
4697 return -EINVAL;
4698
4699 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4700 return -EINVAL;
4701
4702 if (!info->attrs[NL80211_ATTR_SSID])
4703 return -EINVAL;
4704
4705 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4706 return -EINVAL;
4707
4708 err = nl80211_parse_key(info, &key);
4709 if (err)
4710 return err;
4711
4712 if (key.idx >= 0) {
4713 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4714 return -EINVAL;
4715 if (!key.p.key || !key.p.key_len)
4716 return -EINVAL;
4717 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4718 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4719 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4720 key.p.key_len != WLAN_KEY_LEN_WEP104))
4721 return -EINVAL;
4722 if (key.idx > 4)
4723 return -EINVAL;
4724 } else {
4725 key.p.key_len = 0;
4726 key.p.key = NULL;
4727 }
4728
4729 if (key.idx >= 0) {
4730 int i;
4731 bool ok = false;
4732 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4733 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4734 ok = true;
4735 break;
4736 }
4737 }
4738 if (!ok)
4739 return -EINVAL;
4740 }
4741
4742 if (!rdev->ops->auth)
4743 return -EOPNOTSUPP;
4744
4745 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4746 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4747 return -EOPNOTSUPP;
4748
4749 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4750 chan = ieee80211_get_channel(&rdev->wiphy,
4751 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4752 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4753 return -EINVAL;
4754
4755 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4756 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4757
4758 if (info->attrs[NL80211_ATTR_IE]) {
4759 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4760 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4761 }
4762
4763 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4764 if (!nl80211_valid_auth_type(auth_type))
4765 return -EINVAL;
4766
4767 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4768
4769 /*
4770 * Since we no longer track auth state, ignore
4771 * requests to only change local state.
4772 */
4773 if (local_state_change)
4774 return 0;
4775
4776 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4777 ssid, ssid_len, ie, ie_len,
4778 key.p.key, key.p.key_len, key.idx);
4779 }
4780
4781 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4782 struct genl_info *info,
4783 struct cfg80211_crypto_settings *settings,
4784 int cipher_limit)
4785 {
4786 memset(settings, 0, sizeof(*settings));
4787
4788 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4789
4790 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4791 u16 proto;
4792 proto = nla_get_u16(
4793 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4794 settings->control_port_ethertype = cpu_to_be16(proto);
4795 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4796 proto != ETH_P_PAE)
4797 return -EINVAL;
4798 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4799 settings->control_port_no_encrypt = true;
4800 } else
4801 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4802
4803 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4804 void *data;
4805 int len, i;
4806
4807 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4808 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4809 settings->n_ciphers_pairwise = len / sizeof(u32);
4810
4811 if (len % sizeof(u32))
4812 return -EINVAL;
4813
4814 if (settings->n_ciphers_pairwise > cipher_limit)
4815 return -EINVAL;
4816
4817 memcpy(settings->ciphers_pairwise, data, len);
4818
4819 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4820 if (!cfg80211_supported_cipher_suite(
4821 &rdev->wiphy,
4822 settings->ciphers_pairwise[i]))
4823 return -EINVAL;
4824 }
4825
4826 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4827 settings->cipher_group =
4828 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4829 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4830 settings->cipher_group))
4831 return -EINVAL;
4832 }
4833
4834 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4835 settings->wpa_versions =
4836 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4837 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4838 return -EINVAL;
4839 }
4840
4841 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4842 void *data;
4843 int len;
4844
4845 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4846 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4847 settings->n_akm_suites = len / sizeof(u32);
4848
4849 if (len % sizeof(u32))
4850 return -EINVAL;
4851
4852 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4853 return -EINVAL;
4854
4855 memcpy(settings->akm_suites, data, len);
4856 }
4857
4858 return 0;
4859 }
4860
4861 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4862 {
4863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4864 struct net_device *dev = info->user_ptr[1];
4865 struct cfg80211_crypto_settings crypto;
4866 struct ieee80211_channel *chan;
4867 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4868 int err, ssid_len, ie_len = 0;
4869 bool use_mfp = false;
4870 u32 flags = 0;
4871 struct ieee80211_ht_cap *ht_capa = NULL;
4872 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4873
4874 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4875 return -EINVAL;
4876
4877 if (!info->attrs[NL80211_ATTR_MAC] ||
4878 !info->attrs[NL80211_ATTR_SSID] ||
4879 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4880 return -EINVAL;
4881
4882 if (!rdev->ops->assoc)
4883 return -EOPNOTSUPP;
4884
4885 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4886 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4887 return -EOPNOTSUPP;
4888
4889 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4890
4891 chan = ieee80211_get_channel(&rdev->wiphy,
4892 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4893 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4894 return -EINVAL;
4895
4896 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4897 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4898
4899 if (info->attrs[NL80211_ATTR_IE]) {
4900 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4901 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4902 }
4903
4904 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4905 enum nl80211_mfp mfp =
4906 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4907 if (mfp == NL80211_MFP_REQUIRED)
4908 use_mfp = true;
4909 else if (mfp != NL80211_MFP_NO)
4910 return -EINVAL;
4911 }
4912
4913 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4914 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4915
4916 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4917 flags |= ASSOC_REQ_DISABLE_HT;
4918
4919 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4920 ht_capa_mask =
4921 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4922
4923 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4924 if (!ht_capa_mask)
4925 return -EINVAL;
4926 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4927 }
4928
4929 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4930 if (!err)
4931 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4932 ssid, ssid_len, ie, ie_len, use_mfp,
4933 &crypto, flags, ht_capa,
4934 ht_capa_mask);
4935
4936 return err;
4937 }
4938
4939 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4940 {
4941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4942 struct net_device *dev = info->user_ptr[1];
4943 const u8 *ie = NULL, *bssid;
4944 int ie_len = 0;
4945 u16 reason_code;
4946 bool local_state_change;
4947
4948 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4949 return -EINVAL;
4950
4951 if (!info->attrs[NL80211_ATTR_MAC])
4952 return -EINVAL;
4953
4954 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4955 return -EINVAL;
4956
4957 if (!rdev->ops->deauth)
4958 return -EOPNOTSUPP;
4959
4960 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4961 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4962 return -EOPNOTSUPP;
4963
4964 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4965
4966 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4967 if (reason_code == 0) {
4968 /* Reason Code 0 is reserved */
4969 return -EINVAL;
4970 }
4971
4972 if (info->attrs[NL80211_ATTR_IE]) {
4973 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4974 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4975 }
4976
4977 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4978
4979 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
4980 local_state_change);
4981 }
4982
4983 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
4984 {
4985 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4986 struct net_device *dev = info->user_ptr[1];
4987 const u8 *ie = NULL, *bssid;
4988 int ie_len = 0;
4989 u16 reason_code;
4990 bool local_state_change;
4991
4992 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4993 return -EINVAL;
4994
4995 if (!info->attrs[NL80211_ATTR_MAC])
4996 return -EINVAL;
4997
4998 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4999 return -EINVAL;
5000
5001 if (!rdev->ops->disassoc)
5002 return -EOPNOTSUPP;
5003
5004 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5005 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5006 return -EOPNOTSUPP;
5007
5008 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5009
5010 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5011 if (reason_code == 0) {
5012 /* Reason Code 0 is reserved */
5013 return -EINVAL;
5014 }
5015
5016 if (info->attrs[NL80211_ATTR_IE]) {
5017 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5018 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5019 }
5020
5021 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5022
5023 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5024 local_state_change);
5025 }
5026
5027 static bool
5028 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5029 int mcast_rate[IEEE80211_NUM_BANDS],
5030 int rateval)
5031 {
5032 struct wiphy *wiphy = &rdev->wiphy;
5033 bool found = false;
5034 int band, i;
5035
5036 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5037 struct ieee80211_supported_band *sband;
5038
5039 sband = wiphy->bands[band];
5040 if (!sband)
5041 continue;
5042
5043 for (i = 0; i < sband->n_bitrates; i++) {
5044 if (sband->bitrates[i].bitrate == rateval) {
5045 mcast_rate[band] = i + 1;
5046 found = true;
5047 break;
5048 }
5049 }
5050 }
5051
5052 return found;
5053 }
5054
5055 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5056 {
5057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058 struct net_device *dev = info->user_ptr[1];
5059 struct cfg80211_ibss_params ibss;
5060 struct wiphy *wiphy;
5061 struct cfg80211_cached_keys *connkeys = NULL;
5062 int err;
5063
5064 memset(&ibss, 0, sizeof(ibss));
5065
5066 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5067 return -EINVAL;
5068
5069 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5070 !info->attrs[NL80211_ATTR_SSID] ||
5071 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5072 return -EINVAL;
5073
5074 ibss.beacon_interval = 100;
5075
5076 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5077 ibss.beacon_interval =
5078 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5079 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5080 return -EINVAL;
5081 }
5082
5083 if (!rdev->ops->join_ibss)
5084 return -EOPNOTSUPP;
5085
5086 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5087 return -EOPNOTSUPP;
5088
5089 wiphy = &rdev->wiphy;
5090
5091 if (info->attrs[NL80211_ATTR_MAC]) {
5092 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5093
5094 if (!is_valid_ether_addr(ibss.bssid))
5095 return -EINVAL;
5096 }
5097 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5098 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5099
5100 if (info->attrs[NL80211_ATTR_IE]) {
5101 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5102 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5103 }
5104
5105 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5106 enum nl80211_channel_type channel_type;
5107
5108 if (!nl80211_valid_channel_type(info, &channel_type))
5109 return -EINVAL;
5110
5111 if (channel_type != NL80211_CHAN_NO_HT &&
5112 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5113 return -EINVAL;
5114
5115 ibss.channel_type = channel_type;
5116 } else {
5117 ibss.channel_type = NL80211_CHAN_NO_HT;
5118 }
5119
5120 ibss.channel = rdev_freq_to_chan(rdev,
5121 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5122 ibss.channel_type);
5123 if (!ibss.channel ||
5124 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5125 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5126 return -EINVAL;
5127
5128 /* Both channels should be able to initiate communication */
5129 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5130 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5131 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5132 ibss.channel_type))
5133 return -EINVAL;
5134
5135 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5136 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5137
5138 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5139 u8 *rates =
5140 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5141 int n_rates =
5142 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5143 struct ieee80211_supported_band *sband =
5144 wiphy->bands[ibss.channel->band];
5145
5146 err = ieee80211_get_ratemask(sband, rates, n_rates,
5147 &ibss.basic_rates);
5148 if (err)
5149 return err;
5150 }
5151
5152 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5153 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5154 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5155 return -EINVAL;
5156
5157 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5158 connkeys = nl80211_parse_connkeys(rdev,
5159 info->attrs[NL80211_ATTR_KEYS]);
5160 if (IS_ERR(connkeys))
5161 return PTR_ERR(connkeys);
5162 }
5163
5164 ibss.control_port =
5165 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5166
5167 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5168 if (err)
5169 kfree(connkeys);
5170 return err;
5171 }
5172
5173 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5174 {
5175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5176 struct net_device *dev = info->user_ptr[1];
5177
5178 if (!rdev->ops->leave_ibss)
5179 return -EOPNOTSUPP;
5180
5181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5182 return -EOPNOTSUPP;
5183
5184 return cfg80211_leave_ibss(rdev, dev, false);
5185 }
5186
5187 #ifdef CONFIG_NL80211_TESTMODE
5188 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5189 .name = "testmode",
5190 };
5191
5192 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5193 {
5194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5195 int err;
5196
5197 if (!info->attrs[NL80211_ATTR_TESTDATA])
5198 return -EINVAL;
5199
5200 err = -EOPNOTSUPP;
5201 if (rdev->ops->testmode_cmd) {
5202 rdev->testmode_info = info;
5203 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5204 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5205 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5206 rdev->testmode_info = NULL;
5207 }
5208
5209 return err;
5210 }
5211
5212 static int nl80211_testmode_dump(struct sk_buff *skb,
5213 struct netlink_callback *cb)
5214 {
5215 struct cfg80211_registered_device *rdev;
5216 int err;
5217 long phy_idx;
5218 void *data = NULL;
5219 int data_len = 0;
5220
5221 if (cb->args[0]) {
5222 /*
5223 * 0 is a valid index, but not valid for args[0],
5224 * so we need to offset by 1.
5225 */
5226 phy_idx = cb->args[0] - 1;
5227 } else {
5228 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5229 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5230 nl80211_policy);
5231 if (err)
5232 return err;
5233 if (nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]) {
5234 phy_idx = nla_get_u32(
5235 nl80211_fam.attrbuf[NL80211_ATTR_WIPHY]);
5236 } else {
5237 struct net_device *netdev;
5238
5239 err = get_rdev_dev_by_ifindex(sock_net(skb->sk),
5240 nl80211_fam.attrbuf,
5241 &rdev, &netdev);
5242 if (err)
5243 return err;
5244 dev_put(netdev);
5245 phy_idx = rdev->wiphy_idx;
5246 cfg80211_unlock_rdev(rdev);
5247 }
5248 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5249 cb->args[1] =
5250 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5251 }
5252
5253 if (cb->args[1]) {
5254 data = nla_data((void *)cb->args[1]);
5255 data_len = nla_len((void *)cb->args[1]);
5256 }
5257
5258 mutex_lock(&cfg80211_mutex);
5259 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5260 if (!rdev) {
5261 mutex_unlock(&cfg80211_mutex);
5262 return -ENOENT;
5263 }
5264 cfg80211_lock_rdev(rdev);
5265 mutex_unlock(&cfg80211_mutex);
5266
5267 if (!rdev->ops->testmode_dump) {
5268 err = -EOPNOTSUPP;
5269 goto out_err;
5270 }
5271
5272 while (1) {
5273 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
5274 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5275 NL80211_CMD_TESTMODE);
5276 struct nlattr *tmdata;
5277
5278 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5279 genlmsg_cancel(skb, hdr);
5280 break;
5281 }
5282
5283 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5284 if (!tmdata) {
5285 genlmsg_cancel(skb, hdr);
5286 break;
5287 }
5288 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5289 data, data_len);
5290 nla_nest_end(skb, tmdata);
5291
5292 if (err == -ENOBUFS || err == -ENOENT) {
5293 genlmsg_cancel(skb, hdr);
5294 break;
5295 } else if (err) {
5296 genlmsg_cancel(skb, hdr);
5297 goto out_err;
5298 }
5299
5300 genlmsg_end(skb, hdr);
5301 }
5302
5303 err = skb->len;
5304 /* see above */
5305 cb->args[0] = phy_idx + 1;
5306 out_err:
5307 cfg80211_unlock_rdev(rdev);
5308 return err;
5309 }
5310
5311 static struct sk_buff *
5312 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5313 int approxlen, u32 pid, u32 seq, gfp_t gfp)
5314 {
5315 struct sk_buff *skb;
5316 void *hdr;
5317 struct nlattr *data;
5318
5319 skb = nlmsg_new(approxlen + 100, gfp);
5320 if (!skb)
5321 return NULL;
5322
5323 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5324 if (!hdr) {
5325 kfree_skb(skb);
5326 return NULL;
5327 }
5328
5329 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5330 goto nla_put_failure;
5331 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5332
5333 ((void **)skb->cb)[0] = rdev;
5334 ((void **)skb->cb)[1] = hdr;
5335 ((void **)skb->cb)[2] = data;
5336
5337 return skb;
5338
5339 nla_put_failure:
5340 kfree_skb(skb);
5341 return NULL;
5342 }
5343
5344 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5345 int approxlen)
5346 {
5347 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5348
5349 if (WARN_ON(!rdev->testmode_info))
5350 return NULL;
5351
5352 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5353 rdev->testmode_info->snd_pid,
5354 rdev->testmode_info->snd_seq,
5355 GFP_KERNEL);
5356 }
5357 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5358
5359 int cfg80211_testmode_reply(struct sk_buff *skb)
5360 {
5361 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5362 void *hdr = ((void **)skb->cb)[1];
5363 struct nlattr *data = ((void **)skb->cb)[2];
5364
5365 if (WARN_ON(!rdev->testmode_info)) {
5366 kfree_skb(skb);
5367 return -EINVAL;
5368 }
5369
5370 nla_nest_end(skb, data);
5371 genlmsg_end(skb, hdr);
5372 return genlmsg_reply(skb, rdev->testmode_info);
5373 }
5374 EXPORT_SYMBOL(cfg80211_testmode_reply);
5375
5376 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5377 int approxlen, gfp_t gfp)
5378 {
5379 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5380
5381 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5382 }
5383 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5384
5385 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5386 {
5387 void *hdr = ((void **)skb->cb)[1];
5388 struct nlattr *data = ((void **)skb->cb)[2];
5389
5390 nla_nest_end(skb, data);
5391 genlmsg_end(skb, hdr);
5392 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5393 }
5394 EXPORT_SYMBOL(cfg80211_testmode_event);
5395 #endif
5396
5397 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5398 {
5399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5400 struct net_device *dev = info->user_ptr[1];
5401 struct cfg80211_connect_params connect;
5402 struct wiphy *wiphy;
5403 struct cfg80211_cached_keys *connkeys = NULL;
5404 int err;
5405
5406 memset(&connect, 0, sizeof(connect));
5407
5408 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5409 return -EINVAL;
5410
5411 if (!info->attrs[NL80211_ATTR_SSID] ||
5412 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5413 return -EINVAL;
5414
5415 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5416 connect.auth_type =
5417 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5418 if (!nl80211_valid_auth_type(connect.auth_type))
5419 return -EINVAL;
5420 } else
5421 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5422
5423 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5424
5425 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5426 NL80211_MAX_NR_CIPHER_SUITES);
5427 if (err)
5428 return err;
5429
5430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5432 return -EOPNOTSUPP;
5433
5434 wiphy = &rdev->wiphy;
5435
5436 connect.bg_scan_period = -1;
5437 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5438 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5439 connect.bg_scan_period =
5440 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5441 }
5442
5443 if (info->attrs[NL80211_ATTR_MAC])
5444 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5445 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5446 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5447
5448 if (info->attrs[NL80211_ATTR_IE]) {
5449 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5450 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5451 }
5452
5453 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5454 connect.channel =
5455 ieee80211_get_channel(wiphy,
5456 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5457 if (!connect.channel ||
5458 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5459 return -EINVAL;
5460 }
5461
5462 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5463 connkeys = nl80211_parse_connkeys(rdev,
5464 info->attrs[NL80211_ATTR_KEYS]);
5465 if (IS_ERR(connkeys))
5466 return PTR_ERR(connkeys);
5467 }
5468
5469 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5470 connect.flags |= ASSOC_REQ_DISABLE_HT;
5471
5472 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5473 memcpy(&connect.ht_capa_mask,
5474 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5475 sizeof(connect.ht_capa_mask));
5476
5477 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5478 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5479 return -EINVAL;
5480 memcpy(&connect.ht_capa,
5481 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5482 sizeof(connect.ht_capa));
5483 }
5484
5485 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5486 if (err)
5487 kfree(connkeys);
5488 return err;
5489 }
5490
5491 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5492 {
5493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5494 struct net_device *dev = info->user_ptr[1];
5495 u16 reason;
5496
5497 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5498 reason = WLAN_REASON_DEAUTH_LEAVING;
5499 else
5500 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5501
5502 if (reason == 0)
5503 return -EINVAL;
5504
5505 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5506 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5507 return -EOPNOTSUPP;
5508
5509 return cfg80211_disconnect(rdev, dev, reason, true);
5510 }
5511
5512 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5513 {
5514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5515 struct net *net;
5516 int err;
5517 u32 pid;
5518
5519 if (!info->attrs[NL80211_ATTR_PID])
5520 return -EINVAL;
5521
5522 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5523
5524 net = get_net_ns_by_pid(pid);
5525 if (IS_ERR(net))
5526 return PTR_ERR(net);
5527
5528 err = 0;
5529
5530 /* check if anything to do */
5531 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5532 err = cfg80211_switch_netns(rdev, net);
5533
5534 put_net(net);
5535 return err;
5536 }
5537
5538 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5539 {
5540 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5541 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5542 struct cfg80211_pmksa *pmksa) = NULL;
5543 struct net_device *dev = info->user_ptr[1];
5544 struct cfg80211_pmksa pmksa;
5545
5546 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5547
5548 if (!info->attrs[NL80211_ATTR_MAC])
5549 return -EINVAL;
5550
5551 if (!info->attrs[NL80211_ATTR_PMKID])
5552 return -EINVAL;
5553
5554 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5555 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5556
5557 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5558 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5559 return -EOPNOTSUPP;
5560
5561 switch (info->genlhdr->cmd) {
5562 case NL80211_CMD_SET_PMKSA:
5563 rdev_ops = rdev->ops->set_pmksa;
5564 break;
5565 case NL80211_CMD_DEL_PMKSA:
5566 rdev_ops = rdev->ops->del_pmksa;
5567 break;
5568 default:
5569 WARN_ON(1);
5570 break;
5571 }
5572
5573 if (!rdev_ops)
5574 return -EOPNOTSUPP;
5575
5576 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5577 }
5578
5579 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5580 {
5581 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5582 struct net_device *dev = info->user_ptr[1];
5583
5584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5586 return -EOPNOTSUPP;
5587
5588 if (!rdev->ops->flush_pmksa)
5589 return -EOPNOTSUPP;
5590
5591 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5592 }
5593
5594 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5595 {
5596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5597 struct net_device *dev = info->user_ptr[1];
5598 u8 action_code, dialog_token;
5599 u16 status_code;
5600 u8 *peer;
5601
5602 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5603 !rdev->ops->tdls_mgmt)
5604 return -EOPNOTSUPP;
5605
5606 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5607 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5608 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5609 !info->attrs[NL80211_ATTR_IE] ||
5610 !info->attrs[NL80211_ATTR_MAC])
5611 return -EINVAL;
5612
5613 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5614 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5615 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5616 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5617
5618 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5619 dialog_token, status_code,
5620 nla_data(info->attrs[NL80211_ATTR_IE]),
5621 nla_len(info->attrs[NL80211_ATTR_IE]));
5622 }
5623
5624 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5625 {
5626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5627 struct net_device *dev = info->user_ptr[1];
5628 enum nl80211_tdls_operation operation;
5629 u8 *peer;
5630
5631 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5632 !rdev->ops->tdls_oper)
5633 return -EOPNOTSUPP;
5634
5635 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5636 !info->attrs[NL80211_ATTR_MAC])
5637 return -EINVAL;
5638
5639 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5640 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5641
5642 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5643 }
5644
5645 static int nl80211_remain_on_channel(struct sk_buff *skb,
5646 struct genl_info *info)
5647 {
5648 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5649 struct net_device *dev = info->user_ptr[1];
5650 struct ieee80211_channel *chan;
5651 struct sk_buff *msg;
5652 void *hdr;
5653 u64 cookie;
5654 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5655 u32 freq, duration;
5656 int err;
5657
5658 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5659 !info->attrs[NL80211_ATTR_DURATION])
5660 return -EINVAL;
5661
5662 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5663
5664 if (!rdev->ops->remain_on_channel ||
5665 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5666 return -EOPNOTSUPP;
5667
5668 /*
5669 * We should be on that channel for at least a minimum amount of
5670 * time (10ms) but no longer than the driver supports.
5671 */
5672 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5673 duration > rdev->wiphy.max_remain_on_channel_duration)
5674 return -EINVAL;
5675
5676 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5677 !nl80211_valid_channel_type(info, &channel_type))
5678 return -EINVAL;
5679
5680 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5681 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5682 if (chan == NULL)
5683 return -EINVAL;
5684
5685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5686 if (!msg)
5687 return -ENOMEM;
5688
5689 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5690 NL80211_CMD_REMAIN_ON_CHANNEL);
5691
5692 if (IS_ERR(hdr)) {
5693 err = PTR_ERR(hdr);
5694 goto free_msg;
5695 }
5696
5697 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5698 channel_type, duration, &cookie);
5699
5700 if (err)
5701 goto free_msg;
5702
5703 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5704 goto nla_put_failure;
5705
5706 genlmsg_end(msg, hdr);
5707
5708 return genlmsg_reply(msg, info);
5709
5710 nla_put_failure:
5711 err = -ENOBUFS;
5712 free_msg:
5713 nlmsg_free(msg);
5714 return err;
5715 }
5716
5717 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5718 struct genl_info *info)
5719 {
5720 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5721 struct net_device *dev = info->user_ptr[1];
5722 u64 cookie;
5723
5724 if (!info->attrs[NL80211_ATTR_COOKIE])
5725 return -EINVAL;
5726
5727 if (!rdev->ops->cancel_remain_on_channel)
5728 return -EOPNOTSUPP;
5729
5730 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5731
5732 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5733 }
5734
5735 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5736 u8 *rates, u8 rates_len)
5737 {
5738 u8 i;
5739 u32 mask = 0;
5740
5741 for (i = 0; i < rates_len; i++) {
5742 int rate = (rates[i] & 0x7f) * 5;
5743 int ridx;
5744 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5745 struct ieee80211_rate *srate =
5746 &sband->bitrates[ridx];
5747 if (rate == srate->bitrate) {
5748 mask |= 1 << ridx;
5749 break;
5750 }
5751 }
5752 if (ridx == sband->n_bitrates)
5753 return 0; /* rate not found */
5754 }
5755
5756 return mask;
5757 }
5758
5759 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5760 u8 *rates, u8 rates_len,
5761 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5762 {
5763 u8 i;
5764
5765 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5766
5767 for (i = 0; i < rates_len; i++) {
5768 int ridx, rbit;
5769
5770 ridx = rates[i] / 8;
5771 rbit = BIT(rates[i] % 8);
5772
5773 /* check validity */
5774 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5775 return false;
5776
5777 /* check availability */
5778 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5779 mcs[ridx] |= rbit;
5780 else
5781 return false;
5782 }
5783
5784 return true;
5785 }
5786
5787 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5788 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5789 .len = NL80211_MAX_SUPP_RATES },
5790 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5791 .len = NL80211_MAX_SUPP_HT_RATES },
5792 };
5793
5794 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5795 struct genl_info *info)
5796 {
5797 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5799 struct cfg80211_bitrate_mask mask;
5800 int rem, i;
5801 struct net_device *dev = info->user_ptr[1];
5802 struct nlattr *tx_rates;
5803 struct ieee80211_supported_band *sband;
5804
5805 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5806 return -EINVAL;
5807
5808 if (!rdev->ops->set_bitrate_mask)
5809 return -EOPNOTSUPP;
5810
5811 memset(&mask, 0, sizeof(mask));
5812 /* Default to all rates enabled */
5813 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5814 sband = rdev->wiphy.bands[i];
5815 mask.control[i].legacy =
5816 sband ? (1 << sband->n_bitrates) - 1 : 0;
5817 if (sband)
5818 memcpy(mask.control[i].mcs,
5819 sband->ht_cap.mcs.rx_mask,
5820 sizeof(mask.control[i].mcs));
5821 else
5822 memset(mask.control[i].mcs, 0,
5823 sizeof(mask.control[i].mcs));
5824 }
5825
5826 /*
5827 * The nested attribute uses enum nl80211_band as the index. This maps
5828 * directly to the enum ieee80211_band values used in cfg80211.
5829 */
5830 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5831 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5832 {
5833 enum ieee80211_band band = nla_type(tx_rates);
5834 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5835 return -EINVAL;
5836 sband = rdev->wiphy.bands[band];
5837 if (sband == NULL)
5838 return -EINVAL;
5839 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5840 nla_len(tx_rates), nl80211_txattr_policy);
5841 if (tb[NL80211_TXRATE_LEGACY]) {
5842 mask.control[band].legacy = rateset_to_mask(
5843 sband,
5844 nla_data(tb[NL80211_TXRATE_LEGACY]),
5845 nla_len(tb[NL80211_TXRATE_LEGACY]));
5846 if ((mask.control[band].legacy == 0) &&
5847 nla_len(tb[NL80211_TXRATE_LEGACY]))
5848 return -EINVAL;
5849 }
5850 if (tb[NL80211_TXRATE_MCS]) {
5851 if (!ht_rateset_to_mask(
5852 sband,
5853 nla_data(tb[NL80211_TXRATE_MCS]),
5854 nla_len(tb[NL80211_TXRATE_MCS]),
5855 mask.control[band].mcs))
5856 return -EINVAL;
5857 }
5858
5859 if (mask.control[band].legacy == 0) {
5860 /* don't allow empty legacy rates if HT
5861 * is not even supported. */
5862 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5863 return -EINVAL;
5864
5865 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5866 if (mask.control[band].mcs[i])
5867 break;
5868
5869 /* legacy and mcs rates may not be both empty */
5870 if (i == IEEE80211_HT_MCS_MASK_LEN)
5871 return -EINVAL;
5872 }
5873 }
5874
5875 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5876 }
5877
5878 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5879 {
5880 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5881 struct net_device *dev = info->user_ptr[1];
5882 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5883
5884 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5885 return -EINVAL;
5886
5887 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5888 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5889
5890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5891 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5892 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5893 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5894 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5895 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5896 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5897 return -EOPNOTSUPP;
5898
5899 /* not much point in registering if we can't reply */
5900 if (!rdev->ops->mgmt_tx)
5901 return -EOPNOTSUPP;
5902
5903 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5904 frame_type,
5905 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5906 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5907 }
5908
5909 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5910 {
5911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5912 struct net_device *dev = info->user_ptr[1];
5913 struct ieee80211_channel *chan;
5914 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5915 bool channel_type_valid = false;
5916 u32 freq;
5917 int err;
5918 void *hdr = NULL;
5919 u64 cookie;
5920 struct sk_buff *msg = NULL;
5921 unsigned int wait = 0;
5922 bool offchan, no_cck, dont_wait_for_ack;
5923
5924 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5925
5926 if (!info->attrs[NL80211_ATTR_FRAME] ||
5927 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5928 return -EINVAL;
5929
5930 if (!rdev->ops->mgmt_tx)
5931 return -EOPNOTSUPP;
5932
5933 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5934 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5935 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5936 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5937 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5938 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5939 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5940 return -EOPNOTSUPP;
5941
5942 if (info->attrs[NL80211_ATTR_DURATION]) {
5943 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5944 return -EINVAL;
5945 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5946
5947 /*
5948 * We should wait on the channel for at least a minimum amount
5949 * of time (10ms) but no longer than the driver supports.
5950 */
5951 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5952 wait > rdev->wiphy.max_remain_on_channel_duration)
5953 return -EINVAL;
5954
5955 }
5956
5957 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5958 if (!nl80211_valid_channel_type(info, &channel_type))
5959 return -EINVAL;
5960 channel_type_valid = true;
5961 }
5962
5963 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5964
5965 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5966 return -EINVAL;
5967
5968 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5969
5970 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5971 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5972 if (chan == NULL)
5973 return -EINVAL;
5974
5975 if (!dont_wait_for_ack) {
5976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5977 if (!msg)
5978 return -ENOMEM;
5979
5980 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5981 NL80211_CMD_FRAME);
5982
5983 if (IS_ERR(hdr)) {
5984 err = PTR_ERR(hdr);
5985 goto free_msg;
5986 }
5987 }
5988
5989 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
5990 channel_type_valid, wait,
5991 nla_data(info->attrs[NL80211_ATTR_FRAME]),
5992 nla_len(info->attrs[NL80211_ATTR_FRAME]),
5993 no_cck, dont_wait_for_ack, &cookie);
5994 if (err)
5995 goto free_msg;
5996
5997 if (msg) {
5998 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5999 goto nla_put_failure;
6000
6001 genlmsg_end(msg, hdr);
6002 return genlmsg_reply(msg, info);
6003 }
6004
6005 return 0;
6006
6007 nla_put_failure:
6008 err = -ENOBUFS;
6009 free_msg:
6010 nlmsg_free(msg);
6011 return err;
6012 }
6013
6014 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6015 {
6016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6017 struct net_device *dev = info->user_ptr[1];
6018 u64 cookie;
6019
6020 if (!info->attrs[NL80211_ATTR_COOKIE])
6021 return -EINVAL;
6022
6023 if (!rdev->ops->mgmt_tx_cancel_wait)
6024 return -EOPNOTSUPP;
6025
6026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6028 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
6029 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6030 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6031 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6032 return -EOPNOTSUPP;
6033
6034 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6035
6036 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
6037 }
6038
6039 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6040 {
6041 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6042 struct wireless_dev *wdev;
6043 struct net_device *dev = info->user_ptr[1];
6044 u8 ps_state;
6045 bool state;
6046 int err;
6047
6048 if (!info->attrs[NL80211_ATTR_PS_STATE])
6049 return -EINVAL;
6050
6051 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6052
6053 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6054 return -EINVAL;
6055
6056 wdev = dev->ieee80211_ptr;
6057
6058 if (!rdev->ops->set_power_mgmt)
6059 return -EOPNOTSUPP;
6060
6061 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6062
6063 if (state == wdev->ps)
6064 return 0;
6065
6066 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6067 wdev->ps_timeout);
6068 if (!err)
6069 wdev->ps = state;
6070 return err;
6071 }
6072
6073 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6074 {
6075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6076 enum nl80211_ps_state ps_state;
6077 struct wireless_dev *wdev;
6078 struct net_device *dev = info->user_ptr[1];
6079 struct sk_buff *msg;
6080 void *hdr;
6081 int err;
6082
6083 wdev = dev->ieee80211_ptr;
6084
6085 if (!rdev->ops->set_power_mgmt)
6086 return -EOPNOTSUPP;
6087
6088 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6089 if (!msg)
6090 return -ENOMEM;
6091
6092 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6093 NL80211_CMD_GET_POWER_SAVE);
6094 if (!hdr) {
6095 err = -ENOBUFS;
6096 goto free_msg;
6097 }
6098
6099 if (wdev->ps)
6100 ps_state = NL80211_PS_ENABLED;
6101 else
6102 ps_state = NL80211_PS_DISABLED;
6103
6104 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6105 goto nla_put_failure;
6106
6107 genlmsg_end(msg, hdr);
6108 return genlmsg_reply(msg, info);
6109
6110 nla_put_failure:
6111 err = -ENOBUFS;
6112 free_msg:
6113 nlmsg_free(msg);
6114 return err;
6115 }
6116
6117 static struct nla_policy
6118 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6119 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6120 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6121 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6122 };
6123
6124 static int nl80211_set_cqm_rssi(struct genl_info *info,
6125 s32 threshold, u32 hysteresis)
6126 {
6127 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6128 struct wireless_dev *wdev;
6129 struct net_device *dev = info->user_ptr[1];
6130
6131 if (threshold > 0)
6132 return -EINVAL;
6133
6134 wdev = dev->ieee80211_ptr;
6135
6136 if (!rdev->ops->set_cqm_rssi_config)
6137 return -EOPNOTSUPP;
6138
6139 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6140 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6141 return -EOPNOTSUPP;
6142
6143 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6144 threshold, hysteresis);
6145 }
6146
6147 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6148 {
6149 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6150 struct nlattr *cqm;
6151 int err;
6152
6153 cqm = info->attrs[NL80211_ATTR_CQM];
6154 if (!cqm) {
6155 err = -EINVAL;
6156 goto out;
6157 }
6158
6159 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6160 nl80211_attr_cqm_policy);
6161 if (err)
6162 goto out;
6163
6164 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6165 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6166 s32 threshold;
6167 u32 hysteresis;
6168 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6169 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6170 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6171 } else
6172 err = -EINVAL;
6173
6174 out:
6175 return err;
6176 }
6177
6178 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6179 {
6180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6181 struct net_device *dev = info->user_ptr[1];
6182 struct mesh_config cfg;
6183 struct mesh_setup setup;
6184 int err;
6185
6186 /* start with default */
6187 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6188 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6189
6190 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6191 /* and parse parameters if given */
6192 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6193 if (err)
6194 return err;
6195 }
6196
6197 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6198 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6199 return -EINVAL;
6200
6201 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6202 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6203
6204 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6205 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6206 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6207 return -EINVAL;
6208
6209 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6210 /* parse additional setup parameters if given */
6211 err = nl80211_parse_mesh_setup(info, &setup);
6212 if (err)
6213 return err;
6214 }
6215
6216 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6217 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6218
6219 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6220 !nl80211_valid_channel_type(info, &channel_type))
6221 return -EINVAL;
6222
6223 setup.channel = rdev_freq_to_chan(rdev,
6224 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6225 channel_type);
6226 if (!setup.channel)
6227 return -EINVAL;
6228 setup.channel_type = channel_type;
6229 } else {
6230 /* cfg80211_join_mesh() will sort it out */
6231 setup.channel = NULL;
6232 }
6233
6234 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6235 }
6236
6237 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6238 {
6239 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6240 struct net_device *dev = info->user_ptr[1];
6241
6242 return cfg80211_leave_mesh(rdev, dev);
6243 }
6244
6245 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6246 {
6247 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6248 struct sk_buff *msg;
6249 void *hdr;
6250
6251 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6252 return -EOPNOTSUPP;
6253
6254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6255 if (!msg)
6256 return -ENOMEM;
6257
6258 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6259 NL80211_CMD_GET_WOWLAN);
6260 if (!hdr)
6261 goto nla_put_failure;
6262
6263 if (rdev->wowlan) {
6264 struct nlattr *nl_wowlan;
6265
6266 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6267 if (!nl_wowlan)
6268 goto nla_put_failure;
6269
6270 if ((rdev->wowlan->any &&
6271 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6272 (rdev->wowlan->disconnect &&
6273 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6274 (rdev->wowlan->magic_pkt &&
6275 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6276 (rdev->wowlan->gtk_rekey_failure &&
6277 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6278 (rdev->wowlan->eap_identity_req &&
6279 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6280 (rdev->wowlan->four_way_handshake &&
6281 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6282 (rdev->wowlan->rfkill_release &&
6283 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6284 goto nla_put_failure;
6285 if (rdev->wowlan->n_patterns) {
6286 struct nlattr *nl_pats, *nl_pat;
6287 int i, pat_len;
6288
6289 nl_pats = nla_nest_start(msg,
6290 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6291 if (!nl_pats)
6292 goto nla_put_failure;
6293
6294 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6295 nl_pat = nla_nest_start(msg, i + 1);
6296 if (!nl_pat)
6297 goto nla_put_failure;
6298 pat_len = rdev->wowlan->patterns[i].pattern_len;
6299 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6300 DIV_ROUND_UP(pat_len, 8),
6301 rdev->wowlan->patterns[i].mask) ||
6302 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6303 pat_len,
6304 rdev->wowlan->patterns[i].pattern))
6305 goto nla_put_failure;
6306 nla_nest_end(msg, nl_pat);
6307 }
6308 nla_nest_end(msg, nl_pats);
6309 }
6310
6311 nla_nest_end(msg, nl_wowlan);
6312 }
6313
6314 genlmsg_end(msg, hdr);
6315 return genlmsg_reply(msg, info);
6316
6317 nla_put_failure:
6318 nlmsg_free(msg);
6319 return -ENOBUFS;
6320 }
6321
6322 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6323 {
6324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6325 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6326 struct cfg80211_wowlan no_triggers = {};
6327 struct cfg80211_wowlan new_triggers = {};
6328 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6329 int err, i;
6330 bool prev_enabled = rdev->wowlan;
6331
6332 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6333 return -EOPNOTSUPP;
6334
6335 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
6336 goto no_triggers;
6337
6338 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6339 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6340 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6341 nl80211_wowlan_policy);
6342 if (err)
6343 return err;
6344
6345 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6346 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6347 return -EINVAL;
6348 new_triggers.any = true;
6349 }
6350
6351 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6352 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6353 return -EINVAL;
6354 new_triggers.disconnect = true;
6355 }
6356
6357 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6358 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6359 return -EINVAL;
6360 new_triggers.magic_pkt = true;
6361 }
6362
6363 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6364 return -EINVAL;
6365
6366 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6367 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6368 return -EINVAL;
6369 new_triggers.gtk_rekey_failure = true;
6370 }
6371
6372 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6373 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6374 return -EINVAL;
6375 new_triggers.eap_identity_req = true;
6376 }
6377
6378 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6379 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6380 return -EINVAL;
6381 new_triggers.four_way_handshake = true;
6382 }
6383
6384 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6385 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6386 return -EINVAL;
6387 new_triggers.rfkill_release = true;
6388 }
6389
6390 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6391 struct nlattr *pat;
6392 int n_patterns = 0;
6393 int rem, pat_len, mask_len;
6394 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6395
6396 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6397 rem)
6398 n_patterns++;
6399 if (n_patterns > wowlan->n_patterns)
6400 return -EINVAL;
6401
6402 new_triggers.patterns = kcalloc(n_patterns,
6403 sizeof(new_triggers.patterns[0]),
6404 GFP_KERNEL);
6405 if (!new_triggers.patterns)
6406 return -ENOMEM;
6407
6408 new_triggers.n_patterns = n_patterns;
6409 i = 0;
6410
6411 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6412 rem) {
6413 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6414 nla_data(pat), nla_len(pat), NULL);
6415 err = -EINVAL;
6416 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6417 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6418 goto error;
6419 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6420 mask_len = DIV_ROUND_UP(pat_len, 8);
6421 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6422 mask_len)
6423 goto error;
6424 if (pat_len > wowlan->pattern_max_len ||
6425 pat_len < wowlan->pattern_min_len)
6426 goto error;
6427
6428 new_triggers.patterns[i].mask =
6429 kmalloc(mask_len + pat_len, GFP_KERNEL);
6430 if (!new_triggers.patterns[i].mask) {
6431 err = -ENOMEM;
6432 goto error;
6433 }
6434 new_triggers.patterns[i].pattern =
6435 new_triggers.patterns[i].mask + mask_len;
6436 memcpy(new_triggers.patterns[i].mask,
6437 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6438 mask_len);
6439 new_triggers.patterns[i].pattern_len = pat_len;
6440 memcpy(new_triggers.patterns[i].pattern,
6441 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6442 pat_len);
6443 i++;
6444 }
6445 }
6446
6447 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6448 struct cfg80211_wowlan *ntrig;
6449 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6450 GFP_KERNEL);
6451 if (!ntrig) {
6452 err = -ENOMEM;
6453 goto error;
6454 }
6455 cfg80211_rdev_free_wowlan(rdev);
6456 rdev->wowlan = ntrig;
6457 } else {
6458 no_triggers:
6459 cfg80211_rdev_free_wowlan(rdev);
6460 rdev->wowlan = NULL;
6461 }
6462
6463 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6464 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6465
6466 return 0;
6467 error:
6468 for (i = 0; i < new_triggers.n_patterns; i++)
6469 kfree(new_triggers.patterns[i].mask);
6470 kfree(new_triggers.patterns);
6471 return err;
6472 }
6473
6474 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6475 {
6476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6477 struct net_device *dev = info->user_ptr[1];
6478 struct wireless_dev *wdev = dev->ieee80211_ptr;
6479 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6480 struct cfg80211_gtk_rekey_data rekey_data;
6481 int err;
6482
6483 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6484 return -EINVAL;
6485
6486 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6487 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6488 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6489 nl80211_rekey_policy);
6490 if (err)
6491 return err;
6492
6493 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6494 return -ERANGE;
6495 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6496 return -ERANGE;
6497 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6498 return -ERANGE;
6499
6500 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6501 NL80211_KEK_LEN);
6502 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6503 NL80211_KCK_LEN);
6504 memcpy(rekey_data.replay_ctr,
6505 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6506 NL80211_REPLAY_CTR_LEN);
6507
6508 wdev_lock(wdev);
6509 if (!wdev->current_bss) {
6510 err = -ENOTCONN;
6511 goto out;
6512 }
6513
6514 if (!rdev->ops->set_rekey_data) {
6515 err = -EOPNOTSUPP;
6516 goto out;
6517 }
6518
6519 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6520 out:
6521 wdev_unlock(wdev);
6522 return err;
6523 }
6524
6525 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6526 struct genl_info *info)
6527 {
6528 struct net_device *dev = info->user_ptr[1];
6529 struct wireless_dev *wdev = dev->ieee80211_ptr;
6530
6531 if (wdev->iftype != NL80211_IFTYPE_AP &&
6532 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6533 return -EINVAL;
6534
6535 if (wdev->ap_unexpected_nlpid)
6536 return -EBUSY;
6537
6538 wdev->ap_unexpected_nlpid = info->snd_pid;
6539 return 0;
6540 }
6541
6542 static int nl80211_probe_client(struct sk_buff *skb,
6543 struct genl_info *info)
6544 {
6545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6546 struct net_device *dev = info->user_ptr[1];
6547 struct wireless_dev *wdev = dev->ieee80211_ptr;
6548 struct sk_buff *msg;
6549 void *hdr;
6550 const u8 *addr;
6551 u64 cookie;
6552 int err;
6553
6554 if (wdev->iftype != NL80211_IFTYPE_AP &&
6555 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6556 return -EOPNOTSUPP;
6557
6558 if (!info->attrs[NL80211_ATTR_MAC])
6559 return -EINVAL;
6560
6561 if (!rdev->ops->probe_client)
6562 return -EOPNOTSUPP;
6563
6564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6565 if (!msg)
6566 return -ENOMEM;
6567
6568 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6569 NL80211_CMD_PROBE_CLIENT);
6570
6571 if (IS_ERR(hdr)) {
6572 err = PTR_ERR(hdr);
6573 goto free_msg;
6574 }
6575
6576 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6577
6578 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6579 if (err)
6580 goto free_msg;
6581
6582 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6583 goto nla_put_failure;
6584
6585 genlmsg_end(msg, hdr);
6586
6587 return genlmsg_reply(msg, info);
6588
6589 nla_put_failure:
6590 err = -ENOBUFS;
6591 free_msg:
6592 nlmsg_free(msg);
6593 return err;
6594 }
6595
6596 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6597 {
6598 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6599
6600 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6601 return -EOPNOTSUPP;
6602
6603 if (rdev->ap_beacons_nlpid)
6604 return -EBUSY;
6605
6606 rdev->ap_beacons_nlpid = info->snd_pid;
6607
6608 return 0;
6609 }
6610
6611 #define NL80211_FLAG_NEED_WIPHY 0x01
6612 #define NL80211_FLAG_NEED_NETDEV 0x02
6613 #define NL80211_FLAG_NEED_RTNL 0x04
6614 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6615 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6616 NL80211_FLAG_CHECK_NETDEV_UP)
6617
6618 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6619 struct genl_info *info)
6620 {
6621 struct cfg80211_registered_device *rdev;
6622 struct net_device *dev;
6623 int err;
6624 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6625
6626 if (rtnl)
6627 rtnl_lock();
6628
6629 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6630 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6631 if (IS_ERR(rdev)) {
6632 if (rtnl)
6633 rtnl_unlock();
6634 return PTR_ERR(rdev);
6635 }
6636 info->user_ptr[0] = rdev;
6637 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6638 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6639 &rdev, &dev);
6640 if (err) {
6641 if (rtnl)
6642 rtnl_unlock();
6643 return err;
6644 }
6645 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6646 !netif_running(dev)) {
6647 cfg80211_unlock_rdev(rdev);
6648 dev_put(dev);
6649 if (rtnl)
6650 rtnl_unlock();
6651 return -ENETDOWN;
6652 }
6653 info->user_ptr[0] = rdev;
6654 info->user_ptr[1] = dev;
6655 }
6656
6657 return 0;
6658 }
6659
6660 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6661 struct genl_info *info)
6662 {
6663 if (info->user_ptr[0])
6664 cfg80211_unlock_rdev(info->user_ptr[0]);
6665 if (info->user_ptr[1])
6666 dev_put(info->user_ptr[1]);
6667 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6668 rtnl_unlock();
6669 }
6670
6671 static struct genl_ops nl80211_ops[] = {
6672 {
6673 .cmd = NL80211_CMD_GET_WIPHY,
6674 .doit = nl80211_get_wiphy,
6675 .dumpit = nl80211_dump_wiphy,
6676 .policy = nl80211_policy,
6677 /* can be retrieved by unprivileged users */
6678 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6679 },
6680 {
6681 .cmd = NL80211_CMD_SET_WIPHY,
6682 .doit = nl80211_set_wiphy,
6683 .policy = nl80211_policy,
6684 .flags = GENL_ADMIN_PERM,
6685 .internal_flags = NL80211_FLAG_NEED_RTNL,
6686 },
6687 {
6688 .cmd = NL80211_CMD_GET_INTERFACE,
6689 .doit = nl80211_get_interface,
6690 .dumpit = nl80211_dump_interface,
6691 .policy = nl80211_policy,
6692 /* can be retrieved by unprivileged users */
6693 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6694 },
6695 {
6696 .cmd = NL80211_CMD_SET_INTERFACE,
6697 .doit = nl80211_set_interface,
6698 .policy = nl80211_policy,
6699 .flags = GENL_ADMIN_PERM,
6700 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6701 NL80211_FLAG_NEED_RTNL,
6702 },
6703 {
6704 .cmd = NL80211_CMD_NEW_INTERFACE,
6705 .doit = nl80211_new_interface,
6706 .policy = nl80211_policy,
6707 .flags = GENL_ADMIN_PERM,
6708 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6709 NL80211_FLAG_NEED_RTNL,
6710 },
6711 {
6712 .cmd = NL80211_CMD_DEL_INTERFACE,
6713 .doit = nl80211_del_interface,
6714 .policy = nl80211_policy,
6715 .flags = GENL_ADMIN_PERM,
6716 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6717 NL80211_FLAG_NEED_RTNL,
6718 },
6719 {
6720 .cmd = NL80211_CMD_GET_KEY,
6721 .doit = nl80211_get_key,
6722 .policy = nl80211_policy,
6723 .flags = GENL_ADMIN_PERM,
6724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6725 NL80211_FLAG_NEED_RTNL,
6726 },
6727 {
6728 .cmd = NL80211_CMD_SET_KEY,
6729 .doit = nl80211_set_key,
6730 .policy = nl80211_policy,
6731 .flags = GENL_ADMIN_PERM,
6732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6733 NL80211_FLAG_NEED_RTNL,
6734 },
6735 {
6736 .cmd = NL80211_CMD_NEW_KEY,
6737 .doit = nl80211_new_key,
6738 .policy = nl80211_policy,
6739 .flags = GENL_ADMIN_PERM,
6740 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6741 NL80211_FLAG_NEED_RTNL,
6742 },
6743 {
6744 .cmd = NL80211_CMD_DEL_KEY,
6745 .doit = nl80211_del_key,
6746 .policy = nl80211_policy,
6747 .flags = GENL_ADMIN_PERM,
6748 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6749 NL80211_FLAG_NEED_RTNL,
6750 },
6751 {
6752 .cmd = NL80211_CMD_SET_BEACON,
6753 .policy = nl80211_policy,
6754 .flags = GENL_ADMIN_PERM,
6755 .doit = nl80211_set_beacon,
6756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6757 NL80211_FLAG_NEED_RTNL,
6758 },
6759 {
6760 .cmd = NL80211_CMD_START_AP,
6761 .policy = nl80211_policy,
6762 .flags = GENL_ADMIN_PERM,
6763 .doit = nl80211_start_ap,
6764 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6765 NL80211_FLAG_NEED_RTNL,
6766 },
6767 {
6768 .cmd = NL80211_CMD_STOP_AP,
6769 .policy = nl80211_policy,
6770 .flags = GENL_ADMIN_PERM,
6771 .doit = nl80211_stop_ap,
6772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6773 NL80211_FLAG_NEED_RTNL,
6774 },
6775 {
6776 .cmd = NL80211_CMD_GET_STATION,
6777 .doit = nl80211_get_station,
6778 .dumpit = nl80211_dump_station,
6779 .policy = nl80211_policy,
6780 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6781 NL80211_FLAG_NEED_RTNL,
6782 },
6783 {
6784 .cmd = NL80211_CMD_SET_STATION,
6785 .doit = nl80211_set_station,
6786 .policy = nl80211_policy,
6787 .flags = GENL_ADMIN_PERM,
6788 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6789 NL80211_FLAG_NEED_RTNL,
6790 },
6791 {
6792 .cmd = NL80211_CMD_NEW_STATION,
6793 .doit = nl80211_new_station,
6794 .policy = nl80211_policy,
6795 .flags = GENL_ADMIN_PERM,
6796 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6797 NL80211_FLAG_NEED_RTNL,
6798 },
6799 {
6800 .cmd = NL80211_CMD_DEL_STATION,
6801 .doit = nl80211_del_station,
6802 .policy = nl80211_policy,
6803 .flags = GENL_ADMIN_PERM,
6804 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6805 NL80211_FLAG_NEED_RTNL,
6806 },
6807 {
6808 .cmd = NL80211_CMD_GET_MPATH,
6809 .doit = nl80211_get_mpath,
6810 .dumpit = nl80211_dump_mpath,
6811 .policy = nl80211_policy,
6812 .flags = GENL_ADMIN_PERM,
6813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6814 NL80211_FLAG_NEED_RTNL,
6815 },
6816 {
6817 .cmd = NL80211_CMD_SET_MPATH,
6818 .doit = nl80211_set_mpath,
6819 .policy = nl80211_policy,
6820 .flags = GENL_ADMIN_PERM,
6821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6822 NL80211_FLAG_NEED_RTNL,
6823 },
6824 {
6825 .cmd = NL80211_CMD_NEW_MPATH,
6826 .doit = nl80211_new_mpath,
6827 .policy = nl80211_policy,
6828 .flags = GENL_ADMIN_PERM,
6829 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6830 NL80211_FLAG_NEED_RTNL,
6831 },
6832 {
6833 .cmd = NL80211_CMD_DEL_MPATH,
6834 .doit = nl80211_del_mpath,
6835 .policy = nl80211_policy,
6836 .flags = GENL_ADMIN_PERM,
6837 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6838 NL80211_FLAG_NEED_RTNL,
6839 },
6840 {
6841 .cmd = NL80211_CMD_SET_BSS,
6842 .doit = nl80211_set_bss,
6843 .policy = nl80211_policy,
6844 .flags = GENL_ADMIN_PERM,
6845 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6846 NL80211_FLAG_NEED_RTNL,
6847 },
6848 {
6849 .cmd = NL80211_CMD_GET_REG,
6850 .doit = nl80211_get_reg,
6851 .policy = nl80211_policy,
6852 /* can be retrieved by unprivileged users */
6853 },
6854 {
6855 .cmd = NL80211_CMD_SET_REG,
6856 .doit = nl80211_set_reg,
6857 .policy = nl80211_policy,
6858 .flags = GENL_ADMIN_PERM,
6859 },
6860 {
6861 .cmd = NL80211_CMD_REQ_SET_REG,
6862 .doit = nl80211_req_set_reg,
6863 .policy = nl80211_policy,
6864 .flags = GENL_ADMIN_PERM,
6865 },
6866 {
6867 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6868 .doit = nl80211_get_mesh_config,
6869 .policy = nl80211_policy,
6870 /* can be retrieved by unprivileged users */
6871 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6872 NL80211_FLAG_NEED_RTNL,
6873 },
6874 {
6875 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6876 .doit = nl80211_update_mesh_config,
6877 .policy = nl80211_policy,
6878 .flags = GENL_ADMIN_PERM,
6879 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6880 NL80211_FLAG_NEED_RTNL,
6881 },
6882 {
6883 .cmd = NL80211_CMD_TRIGGER_SCAN,
6884 .doit = nl80211_trigger_scan,
6885 .policy = nl80211_policy,
6886 .flags = GENL_ADMIN_PERM,
6887 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6888 NL80211_FLAG_NEED_RTNL,
6889 },
6890 {
6891 .cmd = NL80211_CMD_GET_SCAN,
6892 .policy = nl80211_policy,
6893 .dumpit = nl80211_dump_scan,
6894 },
6895 {
6896 .cmd = NL80211_CMD_START_SCHED_SCAN,
6897 .doit = nl80211_start_sched_scan,
6898 .policy = nl80211_policy,
6899 .flags = GENL_ADMIN_PERM,
6900 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6901 NL80211_FLAG_NEED_RTNL,
6902 },
6903 {
6904 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6905 .doit = nl80211_stop_sched_scan,
6906 .policy = nl80211_policy,
6907 .flags = GENL_ADMIN_PERM,
6908 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6909 NL80211_FLAG_NEED_RTNL,
6910 },
6911 {
6912 .cmd = NL80211_CMD_AUTHENTICATE,
6913 .doit = nl80211_authenticate,
6914 .policy = nl80211_policy,
6915 .flags = GENL_ADMIN_PERM,
6916 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6917 NL80211_FLAG_NEED_RTNL,
6918 },
6919 {
6920 .cmd = NL80211_CMD_ASSOCIATE,
6921 .doit = nl80211_associate,
6922 .policy = nl80211_policy,
6923 .flags = GENL_ADMIN_PERM,
6924 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6925 NL80211_FLAG_NEED_RTNL,
6926 },
6927 {
6928 .cmd = NL80211_CMD_DEAUTHENTICATE,
6929 .doit = nl80211_deauthenticate,
6930 .policy = nl80211_policy,
6931 .flags = GENL_ADMIN_PERM,
6932 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6933 NL80211_FLAG_NEED_RTNL,
6934 },
6935 {
6936 .cmd = NL80211_CMD_DISASSOCIATE,
6937 .doit = nl80211_disassociate,
6938 .policy = nl80211_policy,
6939 .flags = GENL_ADMIN_PERM,
6940 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6941 NL80211_FLAG_NEED_RTNL,
6942 },
6943 {
6944 .cmd = NL80211_CMD_JOIN_IBSS,
6945 .doit = nl80211_join_ibss,
6946 .policy = nl80211_policy,
6947 .flags = GENL_ADMIN_PERM,
6948 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6949 NL80211_FLAG_NEED_RTNL,
6950 },
6951 {
6952 .cmd = NL80211_CMD_LEAVE_IBSS,
6953 .doit = nl80211_leave_ibss,
6954 .policy = nl80211_policy,
6955 .flags = GENL_ADMIN_PERM,
6956 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6957 NL80211_FLAG_NEED_RTNL,
6958 },
6959 #ifdef CONFIG_NL80211_TESTMODE
6960 {
6961 .cmd = NL80211_CMD_TESTMODE,
6962 .doit = nl80211_testmode_do,
6963 .dumpit = nl80211_testmode_dump,
6964 .policy = nl80211_policy,
6965 .flags = GENL_ADMIN_PERM,
6966 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6967 NL80211_FLAG_NEED_RTNL,
6968 },
6969 #endif
6970 {
6971 .cmd = NL80211_CMD_CONNECT,
6972 .doit = nl80211_connect,
6973 .policy = nl80211_policy,
6974 .flags = GENL_ADMIN_PERM,
6975 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6976 NL80211_FLAG_NEED_RTNL,
6977 },
6978 {
6979 .cmd = NL80211_CMD_DISCONNECT,
6980 .doit = nl80211_disconnect,
6981 .policy = nl80211_policy,
6982 .flags = GENL_ADMIN_PERM,
6983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6984 NL80211_FLAG_NEED_RTNL,
6985 },
6986 {
6987 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
6988 .doit = nl80211_wiphy_netns,
6989 .policy = nl80211_policy,
6990 .flags = GENL_ADMIN_PERM,
6991 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6992 NL80211_FLAG_NEED_RTNL,
6993 },
6994 {
6995 .cmd = NL80211_CMD_GET_SURVEY,
6996 .policy = nl80211_policy,
6997 .dumpit = nl80211_dump_survey,
6998 },
6999 {
7000 .cmd = NL80211_CMD_SET_PMKSA,
7001 .doit = nl80211_setdel_pmksa,
7002 .policy = nl80211_policy,
7003 .flags = GENL_ADMIN_PERM,
7004 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7005 NL80211_FLAG_NEED_RTNL,
7006 },
7007 {
7008 .cmd = NL80211_CMD_DEL_PMKSA,
7009 .doit = nl80211_setdel_pmksa,
7010 .policy = nl80211_policy,
7011 .flags = GENL_ADMIN_PERM,
7012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7013 NL80211_FLAG_NEED_RTNL,
7014 },
7015 {
7016 .cmd = NL80211_CMD_FLUSH_PMKSA,
7017 .doit = nl80211_flush_pmksa,
7018 .policy = nl80211_policy,
7019 .flags = GENL_ADMIN_PERM,
7020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7021 NL80211_FLAG_NEED_RTNL,
7022 },
7023 {
7024 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7025 .doit = nl80211_remain_on_channel,
7026 .policy = nl80211_policy,
7027 .flags = GENL_ADMIN_PERM,
7028 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7029 NL80211_FLAG_NEED_RTNL,
7030 },
7031 {
7032 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7033 .doit = nl80211_cancel_remain_on_channel,
7034 .policy = nl80211_policy,
7035 .flags = GENL_ADMIN_PERM,
7036 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7037 NL80211_FLAG_NEED_RTNL,
7038 },
7039 {
7040 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7041 .doit = nl80211_set_tx_bitrate_mask,
7042 .policy = nl80211_policy,
7043 .flags = GENL_ADMIN_PERM,
7044 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7045 NL80211_FLAG_NEED_RTNL,
7046 },
7047 {
7048 .cmd = NL80211_CMD_REGISTER_FRAME,
7049 .doit = nl80211_register_mgmt,
7050 .policy = nl80211_policy,
7051 .flags = GENL_ADMIN_PERM,
7052 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7053 NL80211_FLAG_NEED_RTNL,
7054 },
7055 {
7056 .cmd = NL80211_CMD_FRAME,
7057 .doit = nl80211_tx_mgmt,
7058 .policy = nl80211_policy,
7059 .flags = GENL_ADMIN_PERM,
7060 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7061 NL80211_FLAG_NEED_RTNL,
7062 },
7063 {
7064 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7065 .doit = nl80211_tx_mgmt_cancel_wait,
7066 .policy = nl80211_policy,
7067 .flags = GENL_ADMIN_PERM,
7068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7069 NL80211_FLAG_NEED_RTNL,
7070 },
7071 {
7072 .cmd = NL80211_CMD_SET_POWER_SAVE,
7073 .doit = nl80211_set_power_save,
7074 .policy = nl80211_policy,
7075 .flags = GENL_ADMIN_PERM,
7076 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7077 NL80211_FLAG_NEED_RTNL,
7078 },
7079 {
7080 .cmd = NL80211_CMD_GET_POWER_SAVE,
7081 .doit = nl80211_get_power_save,
7082 .policy = nl80211_policy,
7083 /* can be retrieved by unprivileged users */
7084 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7085 NL80211_FLAG_NEED_RTNL,
7086 },
7087 {
7088 .cmd = NL80211_CMD_SET_CQM,
7089 .doit = nl80211_set_cqm,
7090 .policy = nl80211_policy,
7091 .flags = GENL_ADMIN_PERM,
7092 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7093 NL80211_FLAG_NEED_RTNL,
7094 },
7095 {
7096 .cmd = NL80211_CMD_SET_CHANNEL,
7097 .doit = nl80211_set_channel,
7098 .policy = nl80211_policy,
7099 .flags = GENL_ADMIN_PERM,
7100 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7101 NL80211_FLAG_NEED_RTNL,
7102 },
7103 {
7104 .cmd = NL80211_CMD_SET_WDS_PEER,
7105 .doit = nl80211_set_wds_peer,
7106 .policy = nl80211_policy,
7107 .flags = GENL_ADMIN_PERM,
7108 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7109 NL80211_FLAG_NEED_RTNL,
7110 },
7111 {
7112 .cmd = NL80211_CMD_JOIN_MESH,
7113 .doit = nl80211_join_mesh,
7114 .policy = nl80211_policy,
7115 .flags = GENL_ADMIN_PERM,
7116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7117 NL80211_FLAG_NEED_RTNL,
7118 },
7119 {
7120 .cmd = NL80211_CMD_LEAVE_MESH,
7121 .doit = nl80211_leave_mesh,
7122 .policy = nl80211_policy,
7123 .flags = GENL_ADMIN_PERM,
7124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7125 NL80211_FLAG_NEED_RTNL,
7126 },
7127 {
7128 .cmd = NL80211_CMD_GET_WOWLAN,
7129 .doit = nl80211_get_wowlan,
7130 .policy = nl80211_policy,
7131 /* can be retrieved by unprivileged users */
7132 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7133 NL80211_FLAG_NEED_RTNL,
7134 },
7135 {
7136 .cmd = NL80211_CMD_SET_WOWLAN,
7137 .doit = nl80211_set_wowlan,
7138 .policy = nl80211_policy,
7139 .flags = GENL_ADMIN_PERM,
7140 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7141 NL80211_FLAG_NEED_RTNL,
7142 },
7143 {
7144 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7145 .doit = nl80211_set_rekey_data,
7146 .policy = nl80211_policy,
7147 .flags = GENL_ADMIN_PERM,
7148 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7149 NL80211_FLAG_NEED_RTNL,
7150 },
7151 {
7152 .cmd = NL80211_CMD_TDLS_MGMT,
7153 .doit = nl80211_tdls_mgmt,
7154 .policy = nl80211_policy,
7155 .flags = GENL_ADMIN_PERM,
7156 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7157 NL80211_FLAG_NEED_RTNL,
7158 },
7159 {
7160 .cmd = NL80211_CMD_TDLS_OPER,
7161 .doit = nl80211_tdls_oper,
7162 .policy = nl80211_policy,
7163 .flags = GENL_ADMIN_PERM,
7164 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7165 NL80211_FLAG_NEED_RTNL,
7166 },
7167 {
7168 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7169 .doit = nl80211_register_unexpected_frame,
7170 .policy = nl80211_policy,
7171 .flags = GENL_ADMIN_PERM,
7172 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7173 NL80211_FLAG_NEED_RTNL,
7174 },
7175 {
7176 .cmd = NL80211_CMD_PROBE_CLIENT,
7177 .doit = nl80211_probe_client,
7178 .policy = nl80211_policy,
7179 .flags = GENL_ADMIN_PERM,
7180 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7181 NL80211_FLAG_NEED_RTNL,
7182 },
7183 {
7184 .cmd = NL80211_CMD_REGISTER_BEACONS,
7185 .doit = nl80211_register_beacons,
7186 .policy = nl80211_policy,
7187 .flags = GENL_ADMIN_PERM,
7188 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7189 NL80211_FLAG_NEED_RTNL,
7190 },
7191 {
7192 .cmd = NL80211_CMD_SET_NOACK_MAP,
7193 .doit = nl80211_set_noack_map,
7194 .policy = nl80211_policy,
7195 .flags = GENL_ADMIN_PERM,
7196 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7197 NL80211_FLAG_NEED_RTNL,
7198 },
7199
7200 };
7201
7202 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7203 .name = "mlme",
7204 };
7205
7206 /* multicast groups */
7207 static struct genl_multicast_group nl80211_config_mcgrp = {
7208 .name = "config",
7209 };
7210 static struct genl_multicast_group nl80211_scan_mcgrp = {
7211 .name = "scan",
7212 };
7213 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7214 .name = "regulatory",
7215 };
7216
7217 /* notification functions */
7218
7219 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7220 {
7221 struct sk_buff *msg;
7222
7223 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7224 if (!msg)
7225 return;
7226
7227 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7228 nlmsg_free(msg);
7229 return;
7230 }
7231
7232 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7233 nl80211_config_mcgrp.id, GFP_KERNEL);
7234 }
7235
7236 static int nl80211_add_scan_req(struct sk_buff *msg,
7237 struct cfg80211_registered_device *rdev)
7238 {
7239 struct cfg80211_scan_request *req = rdev->scan_req;
7240 struct nlattr *nest;
7241 int i;
7242
7243 ASSERT_RDEV_LOCK(rdev);
7244
7245 if (WARN_ON(!req))
7246 return 0;
7247
7248 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7249 if (!nest)
7250 goto nla_put_failure;
7251 for (i = 0; i < req->n_ssids; i++) {
7252 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7253 goto nla_put_failure;
7254 }
7255 nla_nest_end(msg, nest);
7256
7257 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7258 if (!nest)
7259 goto nla_put_failure;
7260 for (i = 0; i < req->n_channels; i++) {
7261 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7262 goto nla_put_failure;
7263 }
7264 nla_nest_end(msg, nest);
7265
7266 if (req->ie &&
7267 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7268 goto nla_put_failure;
7269
7270 return 0;
7271 nla_put_failure:
7272 return -ENOBUFS;
7273 }
7274
7275 static int nl80211_send_scan_msg(struct sk_buff *msg,
7276 struct cfg80211_registered_device *rdev,
7277 struct net_device *netdev,
7278 u32 pid, u32 seq, int flags,
7279 u32 cmd)
7280 {
7281 void *hdr;
7282
7283 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7284 if (!hdr)
7285 return -1;
7286
7287 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7288 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7289 goto nla_put_failure;
7290
7291 /* ignore errors and send incomplete event anyway */
7292 nl80211_add_scan_req(msg, rdev);
7293
7294 return genlmsg_end(msg, hdr);
7295
7296 nla_put_failure:
7297 genlmsg_cancel(msg, hdr);
7298 return -EMSGSIZE;
7299 }
7300
7301 static int
7302 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7303 struct cfg80211_registered_device *rdev,
7304 struct net_device *netdev,
7305 u32 pid, u32 seq, int flags, u32 cmd)
7306 {
7307 void *hdr;
7308
7309 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7310 if (!hdr)
7311 return -1;
7312
7313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7314 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7315 goto nla_put_failure;
7316
7317 return genlmsg_end(msg, hdr);
7318
7319 nla_put_failure:
7320 genlmsg_cancel(msg, hdr);
7321 return -EMSGSIZE;
7322 }
7323
7324 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7325 struct net_device *netdev)
7326 {
7327 struct sk_buff *msg;
7328
7329 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7330 if (!msg)
7331 return;
7332
7333 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7334 NL80211_CMD_TRIGGER_SCAN) < 0) {
7335 nlmsg_free(msg);
7336 return;
7337 }
7338
7339 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7340 nl80211_scan_mcgrp.id, GFP_KERNEL);
7341 }
7342
7343 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7344 struct net_device *netdev)
7345 {
7346 struct sk_buff *msg;
7347
7348 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7349 if (!msg)
7350 return;
7351
7352 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7353 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7354 nlmsg_free(msg);
7355 return;
7356 }
7357
7358 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7359 nl80211_scan_mcgrp.id, GFP_KERNEL);
7360 }
7361
7362 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7363 struct net_device *netdev)
7364 {
7365 struct sk_buff *msg;
7366
7367 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7368 if (!msg)
7369 return;
7370
7371 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7372 NL80211_CMD_SCAN_ABORTED) < 0) {
7373 nlmsg_free(msg);
7374 return;
7375 }
7376
7377 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7378 nl80211_scan_mcgrp.id, GFP_KERNEL);
7379 }
7380
7381 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7382 struct net_device *netdev)
7383 {
7384 struct sk_buff *msg;
7385
7386 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7387 if (!msg)
7388 return;
7389
7390 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7391 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7392 nlmsg_free(msg);
7393 return;
7394 }
7395
7396 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7397 nl80211_scan_mcgrp.id, GFP_KERNEL);
7398 }
7399
7400 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7401 struct net_device *netdev, u32 cmd)
7402 {
7403 struct sk_buff *msg;
7404
7405 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7406 if (!msg)
7407 return;
7408
7409 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7410 nlmsg_free(msg);
7411 return;
7412 }
7413
7414 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7415 nl80211_scan_mcgrp.id, GFP_KERNEL);
7416 }
7417
7418 /*
7419 * This can happen on global regulatory changes or device specific settings
7420 * based on custom world regulatory domains.
7421 */
7422 void nl80211_send_reg_change_event(struct regulatory_request *request)
7423 {
7424 struct sk_buff *msg;
7425 void *hdr;
7426
7427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7428 if (!msg)
7429 return;
7430
7431 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7432 if (!hdr) {
7433 nlmsg_free(msg);
7434 return;
7435 }
7436
7437 /* Userspace can always count this one always being set */
7438 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7439 goto nla_put_failure;
7440
7441 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7442 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7443 NL80211_REGDOM_TYPE_WORLD))
7444 goto nla_put_failure;
7445 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7446 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7447 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7448 goto nla_put_failure;
7449 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7450 request->intersect) {
7451 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7452 NL80211_REGDOM_TYPE_INTERSECTION))
7453 goto nla_put_failure;
7454 } else {
7455 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7456 NL80211_REGDOM_TYPE_COUNTRY) ||
7457 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7458 request->alpha2))
7459 goto nla_put_failure;
7460 }
7461
7462 if (wiphy_idx_valid(request->wiphy_idx) &&
7463 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7464 goto nla_put_failure;
7465
7466 genlmsg_end(msg, hdr);
7467
7468 rcu_read_lock();
7469 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7470 GFP_ATOMIC);
7471 rcu_read_unlock();
7472
7473 return;
7474
7475 nla_put_failure:
7476 genlmsg_cancel(msg, hdr);
7477 nlmsg_free(msg);
7478 }
7479
7480 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7481 struct net_device *netdev,
7482 const u8 *buf, size_t len,
7483 enum nl80211_commands cmd, gfp_t gfp)
7484 {
7485 struct sk_buff *msg;
7486 void *hdr;
7487
7488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7489 if (!msg)
7490 return;
7491
7492 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7493 if (!hdr) {
7494 nlmsg_free(msg);
7495 return;
7496 }
7497
7498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7499 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7500 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7501 goto nla_put_failure;
7502
7503 genlmsg_end(msg, hdr);
7504
7505 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7506 nl80211_mlme_mcgrp.id, gfp);
7507 return;
7508
7509 nla_put_failure:
7510 genlmsg_cancel(msg, hdr);
7511 nlmsg_free(msg);
7512 }
7513
7514 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7515 struct net_device *netdev, const u8 *buf,
7516 size_t len, gfp_t gfp)
7517 {
7518 nl80211_send_mlme_event(rdev, netdev, buf, len,
7519 NL80211_CMD_AUTHENTICATE, gfp);
7520 }
7521
7522 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7523 struct net_device *netdev, const u8 *buf,
7524 size_t len, gfp_t gfp)
7525 {
7526 nl80211_send_mlme_event(rdev, netdev, buf, len,
7527 NL80211_CMD_ASSOCIATE, gfp);
7528 }
7529
7530 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7531 struct net_device *netdev, const u8 *buf,
7532 size_t len, gfp_t gfp)
7533 {
7534 nl80211_send_mlme_event(rdev, netdev, buf, len,
7535 NL80211_CMD_DEAUTHENTICATE, gfp);
7536 }
7537
7538 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7539 struct net_device *netdev, const u8 *buf,
7540 size_t len, gfp_t gfp)
7541 {
7542 nl80211_send_mlme_event(rdev, netdev, buf, len,
7543 NL80211_CMD_DISASSOCIATE, gfp);
7544 }
7545
7546 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7547 struct net_device *netdev, const u8 *buf,
7548 size_t len, gfp_t gfp)
7549 {
7550 nl80211_send_mlme_event(rdev, netdev, buf, len,
7551 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7552 }
7553
7554 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7555 struct net_device *netdev, const u8 *buf,
7556 size_t len, gfp_t gfp)
7557 {
7558 nl80211_send_mlme_event(rdev, netdev, buf, len,
7559 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7560 }
7561
7562 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7563 struct net_device *netdev, int cmd,
7564 const u8 *addr, gfp_t gfp)
7565 {
7566 struct sk_buff *msg;
7567 void *hdr;
7568
7569 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7570 if (!msg)
7571 return;
7572
7573 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7574 if (!hdr) {
7575 nlmsg_free(msg);
7576 return;
7577 }
7578
7579 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7580 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7581 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
7582 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
7583 goto nla_put_failure;
7584
7585 genlmsg_end(msg, hdr);
7586
7587 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7588 nl80211_mlme_mcgrp.id, gfp);
7589 return;
7590
7591 nla_put_failure:
7592 genlmsg_cancel(msg, hdr);
7593 nlmsg_free(msg);
7594 }
7595
7596 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7597 struct net_device *netdev, const u8 *addr,
7598 gfp_t gfp)
7599 {
7600 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7601 addr, gfp);
7602 }
7603
7604 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7605 struct net_device *netdev, const u8 *addr,
7606 gfp_t gfp)
7607 {
7608 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7609 addr, gfp);
7610 }
7611
7612 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7613 struct net_device *netdev, const u8 *bssid,
7614 const u8 *req_ie, size_t req_ie_len,
7615 const u8 *resp_ie, size_t resp_ie_len,
7616 u16 status, gfp_t gfp)
7617 {
7618 struct sk_buff *msg;
7619 void *hdr;
7620
7621 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7622 if (!msg)
7623 return;
7624
7625 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7626 if (!hdr) {
7627 nlmsg_free(msg);
7628 return;
7629 }
7630
7631 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7632 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7633 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
7634 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
7635 (req_ie &&
7636 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7637 (resp_ie &&
7638 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7639 goto nla_put_failure;
7640
7641 genlmsg_end(msg, hdr);
7642
7643 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7644 nl80211_mlme_mcgrp.id, gfp);
7645 return;
7646
7647 nla_put_failure:
7648 genlmsg_cancel(msg, hdr);
7649 nlmsg_free(msg);
7650
7651 }
7652
7653 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7654 struct net_device *netdev, const u8 *bssid,
7655 const u8 *req_ie, size_t req_ie_len,
7656 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7657 {
7658 struct sk_buff *msg;
7659 void *hdr;
7660
7661 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7662 if (!msg)
7663 return;
7664
7665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7666 if (!hdr) {
7667 nlmsg_free(msg);
7668 return;
7669 }
7670
7671 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7672 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7673 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
7674 (req_ie &&
7675 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7676 (resp_ie &&
7677 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7678 goto nla_put_failure;
7679
7680 genlmsg_end(msg, hdr);
7681
7682 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7683 nl80211_mlme_mcgrp.id, gfp);
7684 return;
7685
7686 nla_put_failure:
7687 genlmsg_cancel(msg, hdr);
7688 nlmsg_free(msg);
7689
7690 }
7691
7692 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7693 struct net_device *netdev, u16 reason,
7694 const u8 *ie, size_t ie_len, bool from_ap)
7695 {
7696 struct sk_buff *msg;
7697 void *hdr;
7698
7699 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7700 if (!msg)
7701 return;
7702
7703 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7704 if (!hdr) {
7705 nlmsg_free(msg);
7706 return;
7707 }
7708
7709 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7710 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7711 (from_ap && reason &&
7712 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
7713 (from_ap &&
7714 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
7715 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
7716 goto nla_put_failure;
7717
7718 genlmsg_end(msg, hdr);
7719
7720 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7721 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7722 return;
7723
7724 nla_put_failure:
7725 genlmsg_cancel(msg, hdr);
7726 nlmsg_free(msg);
7727
7728 }
7729
7730 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7731 struct net_device *netdev, const u8 *bssid,
7732 gfp_t gfp)
7733 {
7734 struct sk_buff *msg;
7735 void *hdr;
7736
7737 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7738 if (!msg)
7739 return;
7740
7741 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7742 if (!hdr) {
7743 nlmsg_free(msg);
7744 return;
7745 }
7746
7747 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7748 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7749 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
7750 goto nla_put_failure;
7751
7752 genlmsg_end(msg, hdr);
7753
7754 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7755 nl80211_mlme_mcgrp.id, gfp);
7756 return;
7757
7758 nla_put_failure:
7759 genlmsg_cancel(msg, hdr);
7760 nlmsg_free(msg);
7761 }
7762
7763 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7764 struct net_device *netdev,
7765 const u8 *macaddr, const u8* ie, u8 ie_len,
7766 gfp_t gfp)
7767 {
7768 struct sk_buff *msg;
7769 void *hdr;
7770
7771 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7772 if (!msg)
7773 return;
7774
7775 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7776 if (!hdr) {
7777 nlmsg_free(msg);
7778 return;
7779 }
7780
7781 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7782 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7783 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
7784 (ie_len && ie &&
7785 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
7786 goto nla_put_failure;
7787
7788 genlmsg_end(msg, hdr);
7789
7790 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7791 nl80211_mlme_mcgrp.id, gfp);
7792 return;
7793
7794 nla_put_failure:
7795 genlmsg_cancel(msg, hdr);
7796 nlmsg_free(msg);
7797 }
7798
7799 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7800 struct net_device *netdev, const u8 *addr,
7801 enum nl80211_key_type key_type, int key_id,
7802 const u8 *tsc, gfp_t gfp)
7803 {
7804 struct sk_buff *msg;
7805 void *hdr;
7806
7807 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7808 if (!msg)
7809 return;
7810
7811 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7812 if (!hdr) {
7813 nlmsg_free(msg);
7814 return;
7815 }
7816
7817 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7818 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7819 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
7820 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
7821 (key_id != -1 &&
7822 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
7823 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
7824 goto nla_put_failure;
7825
7826 genlmsg_end(msg, hdr);
7827
7828 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7829 nl80211_mlme_mcgrp.id, gfp);
7830 return;
7831
7832 nla_put_failure:
7833 genlmsg_cancel(msg, hdr);
7834 nlmsg_free(msg);
7835 }
7836
7837 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7838 struct ieee80211_channel *channel_before,
7839 struct ieee80211_channel *channel_after)
7840 {
7841 struct sk_buff *msg;
7842 void *hdr;
7843 struct nlattr *nl_freq;
7844
7845 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7846 if (!msg)
7847 return;
7848
7849 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7850 if (!hdr) {
7851 nlmsg_free(msg);
7852 return;
7853 }
7854
7855 /*
7856 * Since we are applying the beacon hint to a wiphy we know its
7857 * wiphy_idx is valid
7858 */
7859 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7860 goto nla_put_failure;
7861
7862 /* Before */
7863 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7864 if (!nl_freq)
7865 goto nla_put_failure;
7866 if (nl80211_msg_put_channel(msg, channel_before))
7867 goto nla_put_failure;
7868 nla_nest_end(msg, nl_freq);
7869
7870 /* After */
7871 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7872 if (!nl_freq)
7873 goto nla_put_failure;
7874 if (nl80211_msg_put_channel(msg, channel_after))
7875 goto nla_put_failure;
7876 nla_nest_end(msg, nl_freq);
7877
7878 genlmsg_end(msg, hdr);
7879
7880 rcu_read_lock();
7881 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7882 GFP_ATOMIC);
7883 rcu_read_unlock();
7884
7885 return;
7886
7887 nla_put_failure:
7888 genlmsg_cancel(msg, hdr);
7889 nlmsg_free(msg);
7890 }
7891
7892 static void nl80211_send_remain_on_chan_event(
7893 int cmd, struct cfg80211_registered_device *rdev,
7894 struct net_device *netdev, u64 cookie,
7895 struct ieee80211_channel *chan,
7896 enum nl80211_channel_type channel_type,
7897 unsigned int duration, gfp_t gfp)
7898 {
7899 struct sk_buff *msg;
7900 void *hdr;
7901
7902 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7903 if (!msg)
7904 return;
7905
7906 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7907 if (!hdr) {
7908 nlmsg_free(msg);
7909 return;
7910 }
7911
7912 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7913 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7914 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
7915 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
7916 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7917 goto nla_put_failure;
7918
7919 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
7920 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
7921 goto nla_put_failure;
7922
7923 genlmsg_end(msg, hdr);
7924
7925 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7926 nl80211_mlme_mcgrp.id, gfp);
7927 return;
7928
7929 nla_put_failure:
7930 genlmsg_cancel(msg, hdr);
7931 nlmsg_free(msg);
7932 }
7933
7934 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7935 struct net_device *netdev, u64 cookie,
7936 struct ieee80211_channel *chan,
7937 enum nl80211_channel_type channel_type,
7938 unsigned int duration, gfp_t gfp)
7939 {
7940 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7941 rdev, netdev, cookie, chan,
7942 channel_type, duration, gfp);
7943 }
7944
7945 void nl80211_send_remain_on_channel_cancel(
7946 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7947 u64 cookie, struct ieee80211_channel *chan,
7948 enum nl80211_channel_type channel_type, gfp_t gfp)
7949 {
7950 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7951 rdev, netdev, cookie, chan,
7952 channel_type, 0, gfp);
7953 }
7954
7955 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7956 struct net_device *dev, const u8 *mac_addr,
7957 struct station_info *sinfo, gfp_t gfp)
7958 {
7959 struct sk_buff *msg;
7960
7961 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7962 if (!msg)
7963 return;
7964
7965 if (nl80211_send_station(msg, 0, 0, 0,
7966 rdev, dev, mac_addr, sinfo) < 0) {
7967 nlmsg_free(msg);
7968 return;
7969 }
7970
7971 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7972 nl80211_mlme_mcgrp.id, gfp);
7973 }
7974
7975 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
7976 struct net_device *dev, const u8 *mac_addr,
7977 gfp_t gfp)
7978 {
7979 struct sk_buff *msg;
7980 void *hdr;
7981
7982 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7983 if (!msg)
7984 return;
7985
7986 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
7987 if (!hdr) {
7988 nlmsg_free(msg);
7989 return;
7990 }
7991
7992 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7993 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
7994 goto nla_put_failure;
7995
7996 genlmsg_end(msg, hdr);
7997
7998 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7999 nl80211_mlme_mcgrp.id, gfp);
8000 return;
8001
8002 nla_put_failure:
8003 genlmsg_cancel(msg, hdr);
8004 nlmsg_free(msg);
8005 }
8006
8007 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8008 const u8 *addr, gfp_t gfp)
8009 {
8010 struct wireless_dev *wdev = dev->ieee80211_ptr;
8011 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8012 struct sk_buff *msg;
8013 void *hdr;
8014 int err;
8015 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
8016
8017 if (!nlpid)
8018 return false;
8019
8020 msg = nlmsg_new(100, gfp);
8021 if (!msg)
8022 return true;
8023
8024 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8025 if (!hdr) {
8026 nlmsg_free(msg);
8027 return true;
8028 }
8029
8030 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8031 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8032 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8033 goto nla_put_failure;
8034
8035 err = genlmsg_end(msg, hdr);
8036 if (err < 0) {
8037 nlmsg_free(msg);
8038 return true;
8039 }
8040
8041 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8042 return true;
8043
8044 nla_put_failure:
8045 genlmsg_cancel(msg, hdr);
8046 nlmsg_free(msg);
8047 return true;
8048 }
8049
8050 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8051 {
8052 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8053 addr, gfp);
8054 }
8055
8056 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8057 const u8 *addr, gfp_t gfp)
8058 {
8059 return __nl80211_unexpected_frame(dev,
8060 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8061 addr, gfp);
8062 }
8063
8064 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8065 struct net_device *netdev, u32 nlpid,
8066 int freq, int sig_dbm,
8067 const u8 *buf, size_t len, gfp_t gfp)
8068 {
8069 struct sk_buff *msg;
8070 void *hdr;
8071
8072 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8073 if (!msg)
8074 return -ENOMEM;
8075
8076 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8077 if (!hdr) {
8078 nlmsg_free(msg);
8079 return -ENOMEM;
8080 }
8081
8082 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8083 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8084 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8085 (sig_dbm &&
8086 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8087 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8088 goto nla_put_failure;
8089
8090 genlmsg_end(msg, hdr);
8091
8092 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8093
8094 nla_put_failure:
8095 genlmsg_cancel(msg, hdr);
8096 nlmsg_free(msg);
8097 return -ENOBUFS;
8098 }
8099
8100 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8101 struct net_device *netdev, u64 cookie,
8102 const u8 *buf, size_t len, bool ack,
8103 gfp_t gfp)
8104 {
8105 struct sk_buff *msg;
8106 void *hdr;
8107
8108 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8109 if (!msg)
8110 return;
8111
8112 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8113 if (!hdr) {
8114 nlmsg_free(msg);
8115 return;
8116 }
8117
8118 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8119 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8120 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8121 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8122 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8123 goto nla_put_failure;
8124
8125 genlmsg_end(msg, hdr);
8126
8127 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8128 return;
8129
8130 nla_put_failure:
8131 genlmsg_cancel(msg, hdr);
8132 nlmsg_free(msg);
8133 }
8134
8135 void
8136 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8137 struct net_device *netdev,
8138 enum nl80211_cqm_rssi_threshold_event rssi_event,
8139 gfp_t gfp)
8140 {
8141 struct sk_buff *msg;
8142 struct nlattr *pinfoattr;
8143 void *hdr;
8144
8145 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8146 if (!msg)
8147 return;
8148
8149 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8150 if (!hdr) {
8151 nlmsg_free(msg);
8152 return;
8153 }
8154
8155 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8156 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8157 goto nla_put_failure;
8158
8159 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8160 if (!pinfoattr)
8161 goto nla_put_failure;
8162
8163 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8164 rssi_event))
8165 goto nla_put_failure;
8166
8167 nla_nest_end(msg, pinfoattr);
8168
8169 genlmsg_end(msg, hdr);
8170
8171 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8172 nl80211_mlme_mcgrp.id, gfp);
8173 return;
8174
8175 nla_put_failure:
8176 genlmsg_cancel(msg, hdr);
8177 nlmsg_free(msg);
8178 }
8179
8180 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8181 struct net_device *netdev, const u8 *bssid,
8182 const u8 *replay_ctr, gfp_t gfp)
8183 {
8184 struct sk_buff *msg;
8185 struct nlattr *rekey_attr;
8186 void *hdr;
8187
8188 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8189 if (!msg)
8190 return;
8191
8192 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8193 if (!hdr) {
8194 nlmsg_free(msg);
8195 return;
8196 }
8197
8198 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8199 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8200 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8201 goto nla_put_failure;
8202
8203 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8204 if (!rekey_attr)
8205 goto nla_put_failure;
8206
8207 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8208 NL80211_REPLAY_CTR_LEN, replay_ctr))
8209 goto nla_put_failure;
8210
8211 nla_nest_end(msg, rekey_attr);
8212
8213 genlmsg_end(msg, hdr);
8214
8215 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8216 nl80211_mlme_mcgrp.id, gfp);
8217 return;
8218
8219 nla_put_failure:
8220 genlmsg_cancel(msg, hdr);
8221 nlmsg_free(msg);
8222 }
8223
8224 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8225 struct net_device *netdev, int index,
8226 const u8 *bssid, bool preauth, gfp_t gfp)
8227 {
8228 struct sk_buff *msg;
8229 struct nlattr *attr;
8230 void *hdr;
8231
8232 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8233 if (!msg)
8234 return;
8235
8236 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8237 if (!hdr) {
8238 nlmsg_free(msg);
8239 return;
8240 }
8241
8242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8243 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8244 goto nla_put_failure;
8245
8246 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8247 if (!attr)
8248 goto nla_put_failure;
8249
8250 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8251 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8252 (preauth &&
8253 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8254 goto nla_put_failure;
8255
8256 nla_nest_end(msg, attr);
8257
8258 genlmsg_end(msg, hdr);
8259
8260 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8261 nl80211_mlme_mcgrp.id, gfp);
8262 return;
8263
8264 nla_put_failure:
8265 genlmsg_cancel(msg, hdr);
8266 nlmsg_free(msg);
8267 }
8268
8269 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8270 struct net_device *netdev, int freq,
8271 enum nl80211_channel_type type, gfp_t gfp)
8272 {
8273 struct sk_buff *msg;
8274 void *hdr;
8275
8276 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8277 if (!msg)
8278 return;
8279
8280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8281 if (!hdr) {
8282 nlmsg_free(msg);
8283 return;
8284 }
8285
8286 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8287 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8288 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8289 goto nla_put_failure;
8290
8291 genlmsg_end(msg, hdr);
8292
8293 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8294 nl80211_mlme_mcgrp.id, gfp);
8295 return;
8296
8297 nla_put_failure:
8298 genlmsg_cancel(msg, hdr);
8299 nlmsg_free(msg);
8300 }
8301
8302 void
8303 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8304 struct net_device *netdev, const u8 *peer,
8305 u32 num_packets, gfp_t gfp)
8306 {
8307 struct sk_buff *msg;
8308 struct nlattr *pinfoattr;
8309 void *hdr;
8310
8311 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8312 if (!msg)
8313 return;
8314
8315 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8316 if (!hdr) {
8317 nlmsg_free(msg);
8318 return;
8319 }
8320
8321 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8322 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8323 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8324 goto nla_put_failure;
8325
8326 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8327 if (!pinfoattr)
8328 goto nla_put_failure;
8329
8330 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8331 goto nla_put_failure;
8332
8333 nla_nest_end(msg, pinfoattr);
8334
8335 genlmsg_end(msg, hdr);
8336
8337 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8338 nl80211_mlme_mcgrp.id, gfp);
8339 return;
8340
8341 nla_put_failure:
8342 genlmsg_cancel(msg, hdr);
8343 nlmsg_free(msg);
8344 }
8345
8346 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8347 u64 cookie, bool acked, gfp_t gfp)
8348 {
8349 struct wireless_dev *wdev = dev->ieee80211_ptr;
8350 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8351 struct sk_buff *msg;
8352 void *hdr;
8353 int err;
8354
8355 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8356 if (!msg)
8357 return;
8358
8359 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8360 if (!hdr) {
8361 nlmsg_free(msg);
8362 return;
8363 }
8364
8365 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8366 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8367 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8368 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8369 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8370 goto nla_put_failure;
8371
8372 err = genlmsg_end(msg, hdr);
8373 if (err < 0) {
8374 nlmsg_free(msg);
8375 return;
8376 }
8377
8378 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8379 nl80211_mlme_mcgrp.id, gfp);
8380 return;
8381
8382 nla_put_failure:
8383 genlmsg_cancel(msg, hdr);
8384 nlmsg_free(msg);
8385 }
8386 EXPORT_SYMBOL(cfg80211_probe_status);
8387
8388 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8389 const u8 *frame, size_t len,
8390 int freq, int sig_dbm, gfp_t gfp)
8391 {
8392 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8393 struct sk_buff *msg;
8394 void *hdr;
8395 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
8396
8397 if (!nlpid)
8398 return;
8399
8400 msg = nlmsg_new(len + 100, gfp);
8401 if (!msg)
8402 return;
8403
8404 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8405 if (!hdr) {
8406 nlmsg_free(msg);
8407 return;
8408 }
8409
8410 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8411 (freq &&
8412 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8413 (sig_dbm &&
8414 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8415 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8416 goto nla_put_failure;
8417
8418 genlmsg_end(msg, hdr);
8419
8420 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8421 return;
8422
8423 nla_put_failure:
8424 genlmsg_cancel(msg, hdr);
8425 nlmsg_free(msg);
8426 }
8427 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8428
8429 static int nl80211_netlink_notify(struct notifier_block * nb,
8430 unsigned long state,
8431 void *_notify)
8432 {
8433 struct netlink_notify *notify = _notify;
8434 struct cfg80211_registered_device *rdev;
8435 struct wireless_dev *wdev;
8436
8437 if (state != NETLINK_URELEASE)
8438 return NOTIFY_DONE;
8439
8440 rcu_read_lock();
8441
8442 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8443 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8444 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8445 if (rdev->ap_beacons_nlpid == notify->pid)
8446 rdev->ap_beacons_nlpid = 0;
8447 }
8448
8449 rcu_read_unlock();
8450
8451 return NOTIFY_DONE;
8452 }
8453
8454 static struct notifier_block nl80211_netlink_notifier = {
8455 .notifier_call = nl80211_netlink_notify,
8456 };
8457
8458 /* initialisation/exit functions */
8459
8460 int nl80211_init(void)
8461 {
8462 int err;
8463
8464 err = genl_register_family_with_ops(&nl80211_fam,
8465 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8466 if (err)
8467 return err;
8468
8469 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8470 if (err)
8471 goto err_out;
8472
8473 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8474 if (err)
8475 goto err_out;
8476
8477 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8478 if (err)
8479 goto err_out;
8480
8481 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8482 if (err)
8483 goto err_out;
8484
8485 #ifdef CONFIG_NL80211_TESTMODE
8486 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8487 if (err)
8488 goto err_out;
8489 #endif
8490
8491 err = netlink_register_notifier(&nl80211_netlink_notifier);
8492 if (err)
8493 goto err_out;
8494
8495 return 0;
8496 err_out:
8497 genl_unregister_family(&nl80211_fam);
8498 return err;
8499 }
8500
8501 void nl80211_exit(void)
8502 {
8503 netlink_unregister_notifier(&nl80211_netlink_notifier);
8504 genl_unregister_family(&nl80211_fam);
8505 }
Linux kernel - Deliverables
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