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cfg80211/mac80211: remove .get_channel
[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 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
344 };
345
346 /* ifidx get helper */
347 static int nl80211_get_ifidx(struct netlink_callback *cb)
348 {
349 int res;
350
351 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
352 nl80211_fam.attrbuf, nl80211_fam.maxattr,
353 nl80211_policy);
354 if (res)
355 return res;
356
357 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
358 return -EINVAL;
359
360 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
361 if (!res)
362 return -EINVAL;
363 return res;
364 }
365
366 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
367 struct netlink_callback *cb,
368 struct cfg80211_registered_device **rdev,
369 struct net_device **dev)
370 {
371 int ifidx = cb->args[0];
372 int err;
373
374 if (!ifidx)
375 ifidx = nl80211_get_ifidx(cb);
376 if (ifidx < 0)
377 return ifidx;
378
379 cb->args[0] = ifidx;
380
381 rtnl_lock();
382
383 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
384 if (!*dev) {
385 err = -ENODEV;
386 goto out_rtnl;
387 }
388
389 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
390 if (IS_ERR(*rdev)) {
391 err = PTR_ERR(*rdev);
392 goto out_rtnl;
393 }
394
395 return 0;
396 out_rtnl:
397 rtnl_unlock();
398 return err;
399 }
400
401 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
402 {
403 cfg80211_unlock_rdev(rdev);
404 rtnl_unlock();
405 }
406
407 /* IE validation */
408 static bool is_valid_ie_attr(const struct nlattr *attr)
409 {
410 const u8 *pos;
411 int len;
412
413 if (!attr)
414 return true;
415
416 pos = nla_data(attr);
417 len = nla_len(attr);
418
419 while (len) {
420 u8 elemlen;
421
422 if (len < 2)
423 return false;
424 len -= 2;
425
426 elemlen = pos[1];
427 if (elemlen > len)
428 return false;
429
430 len -= elemlen;
431 pos += 2 + elemlen;
432 }
433
434 return true;
435 }
436
437 /* message building helper */
438 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
439 int flags, u8 cmd)
440 {
441 /* since there is no private header just add the generic one */
442 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
443 }
444
445 static int nl80211_msg_put_channel(struct sk_buff *msg,
446 struct ieee80211_channel *chan)
447 {
448 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
449 chan->center_freq))
450 goto nla_put_failure;
451
452 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
453 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
454 goto nla_put_failure;
455 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
456 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
457 goto nla_put_failure;
458 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
459 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
460 goto nla_put_failure;
461 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
462 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
463 goto nla_put_failure;
464
465 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
466 DBM_TO_MBM(chan->max_power)))
467 goto nla_put_failure;
468
469 return 0;
470
471 nla_put_failure:
472 return -ENOBUFS;
473 }
474
475 /* netlink command implementations */
476
477 struct key_parse {
478 struct key_params p;
479 int idx;
480 int type;
481 bool def, defmgmt;
482 bool def_uni, def_multi;
483 };
484
485 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
486 {
487 struct nlattr *tb[NL80211_KEY_MAX + 1];
488 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
489 nl80211_key_policy);
490 if (err)
491 return err;
492
493 k->def = !!tb[NL80211_KEY_DEFAULT];
494 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
495
496 if (k->def) {
497 k->def_uni = true;
498 k->def_multi = true;
499 }
500 if (k->defmgmt)
501 k->def_multi = true;
502
503 if (tb[NL80211_KEY_IDX])
504 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
505
506 if (tb[NL80211_KEY_DATA]) {
507 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
508 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
509 }
510
511 if (tb[NL80211_KEY_SEQ]) {
512 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
513 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
514 }
515
516 if (tb[NL80211_KEY_CIPHER])
517 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
518
519 if (tb[NL80211_KEY_TYPE]) {
520 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
521 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
522 return -EINVAL;
523 }
524
525 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
526 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
527 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
528 tb[NL80211_KEY_DEFAULT_TYPES],
529 nl80211_key_default_policy);
530 if (err)
531 return err;
532
533 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
534 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
535 }
536
537 return 0;
538 }
539
540 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
541 {
542 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
543 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
544 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
545 }
546
547 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
548 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
549 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
550 }
551
552 if (info->attrs[NL80211_ATTR_KEY_IDX])
553 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
554
555 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
556 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
557
558 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
559 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
560
561 if (k->def) {
562 k->def_uni = true;
563 k->def_multi = true;
564 }
565 if (k->defmgmt)
566 k->def_multi = true;
567
568 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
569 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
570 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
571 return -EINVAL;
572 }
573
574 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
575 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
576 int err = nla_parse_nested(
577 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
578 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
579 nl80211_key_default_policy);
580 if (err)
581 return err;
582
583 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
584 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
585 }
586
587 return 0;
588 }
589
590 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
591 {
592 int err;
593
594 memset(k, 0, sizeof(*k));
595 k->idx = -1;
596 k->type = -1;
597
598 if (info->attrs[NL80211_ATTR_KEY])
599 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
600 else
601 err = nl80211_parse_key_old(info, k);
602
603 if (err)
604 return err;
605
606 if (k->def && k->defmgmt)
607 return -EINVAL;
608
609 if (k->defmgmt) {
610 if (k->def_uni || !k->def_multi)
611 return -EINVAL;
612 }
613
614 if (k->idx != -1) {
615 if (k->defmgmt) {
616 if (k->idx < 4 || k->idx > 5)
617 return -EINVAL;
618 } else if (k->def) {
619 if (k->idx < 0 || k->idx > 3)
620 return -EINVAL;
621 } else {
622 if (k->idx < 0 || k->idx > 5)
623 return -EINVAL;
624 }
625 }
626
627 return 0;
628 }
629
630 static struct cfg80211_cached_keys *
631 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
632 struct nlattr *keys)
633 {
634 struct key_parse parse;
635 struct nlattr *key;
636 struct cfg80211_cached_keys *result;
637 int rem, err, def = 0;
638
639 result = kzalloc(sizeof(*result), GFP_KERNEL);
640 if (!result)
641 return ERR_PTR(-ENOMEM);
642
643 result->def = -1;
644 result->defmgmt = -1;
645
646 nla_for_each_nested(key, keys, rem) {
647 memset(&parse, 0, sizeof(parse));
648 parse.idx = -1;
649
650 err = nl80211_parse_key_new(key, &parse);
651 if (err)
652 goto error;
653 err = -EINVAL;
654 if (!parse.p.key)
655 goto error;
656 if (parse.idx < 0 || parse.idx > 4)
657 goto error;
658 if (parse.def) {
659 if (def)
660 goto error;
661 def = 1;
662 result->def = parse.idx;
663 if (!parse.def_uni || !parse.def_multi)
664 goto error;
665 } else if (parse.defmgmt)
666 goto error;
667 err = cfg80211_validate_key_settings(rdev, &parse.p,
668 parse.idx, false, NULL);
669 if (err)
670 goto error;
671 result->params[parse.idx].cipher = parse.p.cipher;
672 result->params[parse.idx].key_len = parse.p.key_len;
673 result->params[parse.idx].key = result->data[parse.idx];
674 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
675 }
676
677 return result;
678 error:
679 kfree(result);
680 return ERR_PTR(err);
681 }
682
683 static int nl80211_key_allowed(struct wireless_dev *wdev)
684 {
685 ASSERT_WDEV_LOCK(wdev);
686
687 switch (wdev->iftype) {
688 case NL80211_IFTYPE_AP:
689 case NL80211_IFTYPE_AP_VLAN:
690 case NL80211_IFTYPE_P2P_GO:
691 case NL80211_IFTYPE_MESH_POINT:
692 break;
693 case NL80211_IFTYPE_ADHOC:
694 if (!wdev->current_bss)
695 return -ENOLINK;
696 break;
697 case NL80211_IFTYPE_STATION:
698 case NL80211_IFTYPE_P2P_CLIENT:
699 if (wdev->sme_state != CFG80211_SME_CONNECTED)
700 return -ENOLINK;
701 break;
702 default:
703 return -EINVAL;
704 }
705
706 return 0;
707 }
708
709 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
710 {
711 struct nlattr *nl_modes = nla_nest_start(msg, attr);
712 int i;
713
714 if (!nl_modes)
715 goto nla_put_failure;
716
717 i = 0;
718 while (ifmodes) {
719 if ((ifmodes & 1) && nla_put_flag(msg, i))
720 goto nla_put_failure;
721 ifmodes >>= 1;
722 i++;
723 }
724
725 nla_nest_end(msg, nl_modes);
726 return 0;
727
728 nla_put_failure:
729 return -ENOBUFS;
730 }
731
732 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
733 struct sk_buff *msg)
734 {
735 struct nlattr *nl_combis;
736 int i, j;
737
738 nl_combis = nla_nest_start(msg,
739 NL80211_ATTR_INTERFACE_COMBINATIONS);
740 if (!nl_combis)
741 goto nla_put_failure;
742
743 for (i = 0; i < wiphy->n_iface_combinations; i++) {
744 const struct ieee80211_iface_combination *c;
745 struct nlattr *nl_combi, *nl_limits;
746
747 c = &wiphy->iface_combinations[i];
748
749 nl_combi = nla_nest_start(msg, i + 1);
750 if (!nl_combi)
751 goto nla_put_failure;
752
753 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
754 if (!nl_limits)
755 goto nla_put_failure;
756
757 for (j = 0; j < c->n_limits; j++) {
758 struct nlattr *nl_limit;
759
760 nl_limit = nla_nest_start(msg, j + 1);
761 if (!nl_limit)
762 goto nla_put_failure;
763 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
764 c->limits[j].max))
765 goto nla_put_failure;
766 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
767 c->limits[j].types))
768 goto nla_put_failure;
769 nla_nest_end(msg, nl_limit);
770 }
771
772 nla_nest_end(msg, nl_limits);
773
774 if (c->beacon_int_infra_match &&
775 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
776 goto nla_put_failure;
777 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
778 c->num_different_channels) ||
779 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
780 c->max_interfaces))
781 goto nla_put_failure;
782
783 nla_nest_end(msg, nl_combi);
784 }
785
786 nla_nest_end(msg, nl_combis);
787
788 return 0;
789 nla_put_failure:
790 return -ENOBUFS;
791 }
792
793 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
794 struct cfg80211_registered_device *dev)
795 {
796 void *hdr;
797 struct nlattr *nl_bands, *nl_band;
798 struct nlattr *nl_freqs, *nl_freq;
799 struct nlattr *nl_rates, *nl_rate;
800 struct nlattr *nl_cmds;
801 enum ieee80211_band band;
802 struct ieee80211_channel *chan;
803 struct ieee80211_rate *rate;
804 int i;
805 const struct ieee80211_txrx_stypes *mgmt_stypes =
806 dev->wiphy.mgmt_stypes;
807
808 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
809 if (!hdr)
810 return -1;
811
812 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
813 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
814 nla_put_u32(msg, NL80211_ATTR_GENERATION,
815 cfg80211_rdev_list_generation) ||
816 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
817 dev->wiphy.retry_short) ||
818 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
819 dev->wiphy.retry_long) ||
820 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
821 dev->wiphy.frag_threshold) ||
822 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
823 dev->wiphy.rts_threshold) ||
824 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
825 dev->wiphy.coverage_class) ||
826 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
827 dev->wiphy.max_scan_ssids) ||
828 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
829 dev->wiphy.max_sched_scan_ssids) ||
830 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
831 dev->wiphy.max_scan_ie_len) ||
832 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
833 dev->wiphy.max_sched_scan_ie_len) ||
834 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
835 dev->wiphy.max_match_sets))
836 goto nla_put_failure;
837
838 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
839 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
840 goto nla_put_failure;
841 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
842 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
843 goto nla_put_failure;
844 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
845 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
846 goto nla_put_failure;
847 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
848 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
849 goto nla_put_failure;
850 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
851 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
852 goto nla_put_failure;
853 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
854 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
855 goto nla_put_failure;
856
857 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
858 sizeof(u32) * dev->wiphy.n_cipher_suites,
859 dev->wiphy.cipher_suites))
860 goto nla_put_failure;
861
862 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
863 dev->wiphy.max_num_pmkids))
864 goto nla_put_failure;
865
866 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
867 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
868 goto nla_put_failure;
869
870 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
871 dev->wiphy.available_antennas_tx) ||
872 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
873 dev->wiphy.available_antennas_rx))
874 goto nla_put_failure;
875
876 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
877 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
878 dev->wiphy.probe_resp_offload))
879 goto nla_put_failure;
880
881 if ((dev->wiphy.available_antennas_tx ||
882 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
883 u32 tx_ant = 0, rx_ant = 0;
884 int res;
885 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
886 if (!res) {
887 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
888 tx_ant) ||
889 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
890 rx_ant))
891 goto nla_put_failure;
892 }
893 }
894
895 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
896 dev->wiphy.interface_modes))
897 goto nla_put_failure;
898
899 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
900 if (!nl_bands)
901 goto nla_put_failure;
902
903 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
904 if (!dev->wiphy.bands[band])
905 continue;
906
907 nl_band = nla_nest_start(msg, band);
908 if (!nl_band)
909 goto nla_put_failure;
910
911 /* add HT info */
912 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
913 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
914 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
915 &dev->wiphy.bands[band]->ht_cap.mcs) ||
916 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
917 dev->wiphy.bands[band]->ht_cap.cap) ||
918 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
919 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
920 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
921 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
922 goto nla_put_failure;
923
924 /* add VHT info */
925 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
926 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
927 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
928 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
929 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
930 dev->wiphy.bands[band]->vht_cap.cap)))
931 goto nla_put_failure;
932
933 /* add frequencies */
934 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
935 if (!nl_freqs)
936 goto nla_put_failure;
937
938 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
939 nl_freq = nla_nest_start(msg, i);
940 if (!nl_freq)
941 goto nla_put_failure;
942
943 chan = &dev->wiphy.bands[band]->channels[i];
944
945 if (nl80211_msg_put_channel(msg, chan))
946 goto nla_put_failure;
947
948 nla_nest_end(msg, nl_freq);
949 }
950
951 nla_nest_end(msg, nl_freqs);
952
953 /* add bitrates */
954 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
955 if (!nl_rates)
956 goto nla_put_failure;
957
958 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
959 nl_rate = nla_nest_start(msg, i);
960 if (!nl_rate)
961 goto nla_put_failure;
962
963 rate = &dev->wiphy.bands[band]->bitrates[i];
964 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
965 rate->bitrate))
966 goto nla_put_failure;
967 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
968 nla_put_flag(msg,
969 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
970 goto nla_put_failure;
971
972 nla_nest_end(msg, nl_rate);
973 }
974
975 nla_nest_end(msg, nl_rates);
976
977 nla_nest_end(msg, nl_band);
978 }
979 nla_nest_end(msg, nl_bands);
980
981 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
982 if (!nl_cmds)
983 goto nla_put_failure;
984
985 i = 0;
986 #define CMD(op, n) \
987 do { \
988 if (dev->ops->op) { \
989 i++; \
990 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
991 goto nla_put_failure; \
992 } \
993 } while (0)
994
995 CMD(add_virtual_intf, NEW_INTERFACE);
996 CMD(change_virtual_intf, SET_INTERFACE);
997 CMD(add_key, NEW_KEY);
998 CMD(start_ap, START_AP);
999 CMD(add_station, NEW_STATION);
1000 CMD(add_mpath, NEW_MPATH);
1001 CMD(update_mesh_config, SET_MESH_CONFIG);
1002 CMD(change_bss, SET_BSS);
1003 CMD(auth, AUTHENTICATE);
1004 CMD(assoc, ASSOCIATE);
1005 CMD(deauth, DEAUTHENTICATE);
1006 CMD(disassoc, DISASSOCIATE);
1007 CMD(join_ibss, JOIN_IBSS);
1008 CMD(join_mesh, JOIN_MESH);
1009 CMD(set_pmksa, SET_PMKSA);
1010 CMD(del_pmksa, DEL_PMKSA);
1011 CMD(flush_pmksa, FLUSH_PMKSA);
1012 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1013 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1014 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1015 CMD(mgmt_tx, FRAME);
1016 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1017 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1018 i++;
1019 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1020 goto nla_put_failure;
1021 }
1022 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1023 dev->ops->join_mesh) {
1024 i++;
1025 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1026 goto nla_put_failure;
1027 }
1028 CMD(set_wds_peer, SET_WDS_PEER);
1029 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1030 CMD(tdls_mgmt, TDLS_MGMT);
1031 CMD(tdls_oper, TDLS_OPER);
1032 }
1033 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1034 CMD(sched_scan_start, START_SCHED_SCAN);
1035 CMD(probe_client, PROBE_CLIENT);
1036 CMD(set_noack_map, SET_NOACK_MAP);
1037 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1038 i++;
1039 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1040 goto nla_put_failure;
1041 }
1042
1043 #ifdef CONFIG_NL80211_TESTMODE
1044 CMD(testmode_cmd, TESTMODE);
1045 #endif
1046
1047 #undef CMD
1048
1049 if (dev->ops->connect || dev->ops->auth) {
1050 i++;
1051 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1052 goto nla_put_failure;
1053 }
1054
1055 if (dev->ops->disconnect || dev->ops->deauth) {
1056 i++;
1057 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1058 goto nla_put_failure;
1059 }
1060
1061 nla_nest_end(msg, nl_cmds);
1062
1063 if (dev->ops->remain_on_channel &&
1064 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1065 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1066 dev->wiphy.max_remain_on_channel_duration))
1067 goto nla_put_failure;
1068
1069 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1070 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1071 goto nla_put_failure;
1072
1073 if (mgmt_stypes) {
1074 u16 stypes;
1075 struct nlattr *nl_ftypes, *nl_ifs;
1076 enum nl80211_iftype ift;
1077
1078 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1079 if (!nl_ifs)
1080 goto nla_put_failure;
1081
1082 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1083 nl_ftypes = nla_nest_start(msg, ift);
1084 if (!nl_ftypes)
1085 goto nla_put_failure;
1086 i = 0;
1087 stypes = mgmt_stypes[ift].tx;
1088 while (stypes) {
1089 if ((stypes & 1) &&
1090 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1091 (i << 4) | IEEE80211_FTYPE_MGMT))
1092 goto nla_put_failure;
1093 stypes >>= 1;
1094 i++;
1095 }
1096 nla_nest_end(msg, nl_ftypes);
1097 }
1098
1099 nla_nest_end(msg, nl_ifs);
1100
1101 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1102 if (!nl_ifs)
1103 goto nla_put_failure;
1104
1105 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1106 nl_ftypes = nla_nest_start(msg, ift);
1107 if (!nl_ftypes)
1108 goto nla_put_failure;
1109 i = 0;
1110 stypes = mgmt_stypes[ift].rx;
1111 while (stypes) {
1112 if ((stypes & 1) &&
1113 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1114 (i << 4) | IEEE80211_FTYPE_MGMT))
1115 goto nla_put_failure;
1116 stypes >>= 1;
1117 i++;
1118 }
1119 nla_nest_end(msg, nl_ftypes);
1120 }
1121 nla_nest_end(msg, nl_ifs);
1122 }
1123
1124 #ifdef CONFIG_PM
1125 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1126 struct nlattr *nl_wowlan;
1127
1128 nl_wowlan = nla_nest_start(msg,
1129 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1130 if (!nl_wowlan)
1131 goto nla_put_failure;
1132
1133 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1134 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1135 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1136 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1137 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1138 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1139 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1140 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1141 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1142 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1143 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1144 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1145 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1146 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1147 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1148 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1149 goto nla_put_failure;
1150 if (dev->wiphy.wowlan.n_patterns) {
1151 struct nl80211_wowlan_pattern_support pat = {
1152 .max_patterns = dev->wiphy.wowlan.n_patterns,
1153 .min_pattern_len =
1154 dev->wiphy.wowlan.pattern_min_len,
1155 .max_pattern_len =
1156 dev->wiphy.wowlan.pattern_max_len,
1157 };
1158 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1159 sizeof(pat), &pat))
1160 goto nla_put_failure;
1161 }
1162
1163 nla_nest_end(msg, nl_wowlan);
1164 }
1165 #endif
1166
1167 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1168 dev->wiphy.software_iftypes))
1169 goto nla_put_failure;
1170
1171 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1172 goto nla_put_failure;
1173
1174 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1175 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1176 dev->wiphy.ap_sme_capa))
1177 goto nla_put_failure;
1178
1179 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1180 dev->wiphy.features))
1181 goto nla_put_failure;
1182
1183 if (dev->wiphy.ht_capa_mod_mask &&
1184 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1185 sizeof(*dev->wiphy.ht_capa_mod_mask),
1186 dev->wiphy.ht_capa_mod_mask))
1187 goto nla_put_failure;
1188
1189 return genlmsg_end(msg, hdr);
1190
1191 nla_put_failure:
1192 genlmsg_cancel(msg, hdr);
1193 return -EMSGSIZE;
1194 }
1195
1196 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1197 {
1198 int idx = 0;
1199 int start = cb->args[0];
1200 struct cfg80211_registered_device *dev;
1201
1202 mutex_lock(&cfg80211_mutex);
1203 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1204 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1205 continue;
1206 if (++idx <= start)
1207 continue;
1208 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1209 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1210 dev) < 0) {
1211 idx--;
1212 break;
1213 }
1214 }
1215 mutex_unlock(&cfg80211_mutex);
1216
1217 cb->args[0] = idx;
1218
1219 return skb->len;
1220 }
1221
1222 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1223 {
1224 struct sk_buff *msg;
1225 struct cfg80211_registered_device *dev = info->user_ptr[0];
1226
1227 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1228 if (!msg)
1229 return -ENOMEM;
1230
1231 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1232 nlmsg_free(msg);
1233 return -ENOBUFS;
1234 }
1235
1236 return genlmsg_reply(msg, info);
1237 }
1238
1239 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1240 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1241 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1242 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1243 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1244 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1245 };
1246
1247 static int parse_txq_params(struct nlattr *tb[],
1248 struct ieee80211_txq_params *txq_params)
1249 {
1250 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1251 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1252 !tb[NL80211_TXQ_ATTR_AIFS])
1253 return -EINVAL;
1254
1255 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1256 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1257 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1258 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1259 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1260
1261 if (txq_params->ac >= NL80211_NUM_ACS)
1262 return -EINVAL;
1263
1264 return 0;
1265 }
1266
1267 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1268 {
1269 /*
1270 * You can only set the channel explicitly for WDS interfaces,
1271 * all others have their channel managed via their respective
1272 * "establish a connection" command (connect, join, ...)
1273 *
1274 * For AP/GO and mesh mode, the channel can be set with the
1275 * channel userspace API, but is only stored and passed to the
1276 * low-level driver when the AP starts or the mesh is joined.
1277 * This is for backward compatibility, userspace can also give
1278 * the channel in the start-ap or join-mesh commands instead.
1279 *
1280 * Monitors are special as they are normally slaved to
1281 * whatever else is going on, so they have their own special
1282 * operation to set the monitor channel if possible.
1283 */
1284 return !wdev ||
1285 wdev->iftype == NL80211_IFTYPE_AP ||
1286 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1287 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1288 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1289 }
1290
1291 static bool nl80211_valid_channel_type(struct genl_info *info,
1292 enum nl80211_channel_type *channel_type)
1293 {
1294 enum nl80211_channel_type tmp;
1295
1296 if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1297 return false;
1298
1299 tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1300 if (tmp != NL80211_CHAN_NO_HT &&
1301 tmp != NL80211_CHAN_HT20 &&
1302 tmp != NL80211_CHAN_HT40PLUS &&
1303 tmp != NL80211_CHAN_HT40MINUS)
1304 return false;
1305
1306 if (channel_type)
1307 *channel_type = tmp;
1308
1309 return true;
1310 }
1311
1312 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1313 struct wireless_dev *wdev,
1314 struct genl_info *info)
1315 {
1316 struct ieee80211_channel *channel;
1317 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1318 u32 freq;
1319 int result;
1320 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1321
1322 if (wdev)
1323 iftype = wdev->iftype;
1324
1325 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1326 return -EINVAL;
1327
1328 if (!nl80211_can_set_dev_channel(wdev))
1329 return -EOPNOTSUPP;
1330
1331 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1332 !nl80211_valid_channel_type(info, &channel_type))
1333 return -EINVAL;
1334
1335 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1336
1337 mutex_lock(&rdev->devlist_mtx);
1338 switch (iftype) {
1339 case NL80211_IFTYPE_AP:
1340 case NL80211_IFTYPE_P2P_GO:
1341 if (wdev->beacon_interval) {
1342 result = -EBUSY;
1343 break;
1344 }
1345 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1346 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1347 channel,
1348 channel_type)) {
1349 result = -EINVAL;
1350 break;
1351 }
1352 wdev->preset_chan = channel;
1353 wdev->preset_chantype = channel_type;
1354 result = 0;
1355 break;
1356 case NL80211_IFTYPE_MESH_POINT:
1357 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1358 break;
1359 case NL80211_IFTYPE_MONITOR:
1360 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1361 break;
1362 default:
1363 result = -EINVAL;
1364 }
1365 mutex_unlock(&rdev->devlist_mtx);
1366
1367 return result;
1368 }
1369
1370 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1371 {
1372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1373 struct net_device *netdev = info->user_ptr[1];
1374
1375 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1376 }
1377
1378 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1379 {
1380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1381 struct net_device *dev = info->user_ptr[1];
1382 struct wireless_dev *wdev = dev->ieee80211_ptr;
1383 const u8 *bssid;
1384
1385 if (!info->attrs[NL80211_ATTR_MAC])
1386 return -EINVAL;
1387
1388 if (netif_running(dev))
1389 return -EBUSY;
1390
1391 if (!rdev->ops->set_wds_peer)
1392 return -EOPNOTSUPP;
1393
1394 if (wdev->iftype != NL80211_IFTYPE_WDS)
1395 return -EOPNOTSUPP;
1396
1397 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1398 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1399 }
1400
1401
1402 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1403 {
1404 struct cfg80211_registered_device *rdev;
1405 struct net_device *netdev = NULL;
1406 struct wireless_dev *wdev;
1407 int result = 0, rem_txq_params = 0;
1408 struct nlattr *nl_txq_params;
1409 u32 changed;
1410 u8 retry_short = 0, retry_long = 0;
1411 u32 frag_threshold = 0, rts_threshold = 0;
1412 u8 coverage_class = 0;
1413
1414 /*
1415 * Try to find the wiphy and netdev. Normally this
1416 * function shouldn't need the netdev, but this is
1417 * done for backward compatibility -- previously
1418 * setting the channel was done per wiphy, but now
1419 * it is per netdev. Previous userland like hostapd
1420 * also passed a netdev to set_wiphy, so that it is
1421 * possible to let that go to the right netdev!
1422 */
1423 mutex_lock(&cfg80211_mutex);
1424
1425 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1426 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1427
1428 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1429 if (netdev && netdev->ieee80211_ptr) {
1430 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1431 mutex_lock(&rdev->mtx);
1432 } else
1433 netdev = NULL;
1434 }
1435
1436 if (!netdev) {
1437 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1438 info->attrs);
1439 if (IS_ERR(rdev)) {
1440 mutex_unlock(&cfg80211_mutex);
1441 return PTR_ERR(rdev);
1442 }
1443 wdev = NULL;
1444 netdev = NULL;
1445 result = 0;
1446
1447 mutex_lock(&rdev->mtx);
1448 } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1449 wdev = netdev->ieee80211_ptr;
1450 else
1451 wdev = NULL;
1452
1453 /*
1454 * end workaround code, by now the rdev is available
1455 * and locked, and wdev may or may not be NULL.
1456 */
1457
1458 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1459 result = cfg80211_dev_rename(
1460 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1461
1462 mutex_unlock(&cfg80211_mutex);
1463
1464 if (result)
1465 goto bad_res;
1466
1467 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1468 struct ieee80211_txq_params txq_params;
1469 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1470
1471 if (!rdev->ops->set_txq_params) {
1472 result = -EOPNOTSUPP;
1473 goto bad_res;
1474 }
1475
1476 if (!netdev) {
1477 result = -EINVAL;
1478 goto bad_res;
1479 }
1480
1481 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1482 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1483 result = -EINVAL;
1484 goto bad_res;
1485 }
1486
1487 if (!netif_running(netdev)) {
1488 result = -ENETDOWN;
1489 goto bad_res;
1490 }
1491
1492 nla_for_each_nested(nl_txq_params,
1493 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1494 rem_txq_params) {
1495 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1496 nla_data(nl_txq_params),
1497 nla_len(nl_txq_params),
1498 txq_params_policy);
1499 result = parse_txq_params(tb, &txq_params);
1500 if (result)
1501 goto bad_res;
1502
1503 result = rdev->ops->set_txq_params(&rdev->wiphy,
1504 netdev,
1505 &txq_params);
1506 if (result)
1507 goto bad_res;
1508 }
1509 }
1510
1511 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1512 result = __nl80211_set_channel(rdev, wdev, info);
1513 if (result)
1514 goto bad_res;
1515 }
1516
1517 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1518 enum nl80211_tx_power_setting type;
1519 int idx, mbm = 0;
1520
1521 if (!rdev->ops->set_tx_power) {
1522 result = -EOPNOTSUPP;
1523 goto bad_res;
1524 }
1525
1526 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1527 type = nla_get_u32(info->attrs[idx]);
1528
1529 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1530 (type != NL80211_TX_POWER_AUTOMATIC)) {
1531 result = -EINVAL;
1532 goto bad_res;
1533 }
1534
1535 if (type != NL80211_TX_POWER_AUTOMATIC) {
1536 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1537 mbm = nla_get_u32(info->attrs[idx]);
1538 }
1539
1540 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1541 if (result)
1542 goto bad_res;
1543 }
1544
1545 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1546 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1547 u32 tx_ant, rx_ant;
1548 if ((!rdev->wiphy.available_antennas_tx &&
1549 !rdev->wiphy.available_antennas_rx) ||
1550 !rdev->ops->set_antenna) {
1551 result = -EOPNOTSUPP;
1552 goto bad_res;
1553 }
1554
1555 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1556 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1557
1558 /* reject antenna configurations which don't match the
1559 * available antenna masks, except for the "all" mask */
1560 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1561 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1562 result = -EINVAL;
1563 goto bad_res;
1564 }
1565
1566 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1567 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1568
1569 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1570 if (result)
1571 goto bad_res;
1572 }
1573
1574 changed = 0;
1575
1576 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1577 retry_short = nla_get_u8(
1578 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1579 if (retry_short == 0) {
1580 result = -EINVAL;
1581 goto bad_res;
1582 }
1583 changed |= WIPHY_PARAM_RETRY_SHORT;
1584 }
1585
1586 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1587 retry_long = nla_get_u8(
1588 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1589 if (retry_long == 0) {
1590 result = -EINVAL;
1591 goto bad_res;
1592 }
1593 changed |= WIPHY_PARAM_RETRY_LONG;
1594 }
1595
1596 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1597 frag_threshold = nla_get_u32(
1598 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1599 if (frag_threshold < 256) {
1600 result = -EINVAL;
1601 goto bad_res;
1602 }
1603 if (frag_threshold != (u32) -1) {
1604 /*
1605 * Fragments (apart from the last one) are required to
1606 * have even length. Make the fragmentation code
1607 * simpler by stripping LSB should someone try to use
1608 * odd threshold value.
1609 */
1610 frag_threshold &= ~0x1;
1611 }
1612 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1613 }
1614
1615 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1616 rts_threshold = nla_get_u32(
1617 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1618 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1619 }
1620
1621 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1622 coverage_class = nla_get_u8(
1623 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1624 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1625 }
1626
1627 if (changed) {
1628 u8 old_retry_short, old_retry_long;
1629 u32 old_frag_threshold, old_rts_threshold;
1630 u8 old_coverage_class;
1631
1632 if (!rdev->ops->set_wiphy_params) {
1633 result = -EOPNOTSUPP;
1634 goto bad_res;
1635 }
1636
1637 old_retry_short = rdev->wiphy.retry_short;
1638 old_retry_long = rdev->wiphy.retry_long;
1639 old_frag_threshold = rdev->wiphy.frag_threshold;
1640 old_rts_threshold = rdev->wiphy.rts_threshold;
1641 old_coverage_class = rdev->wiphy.coverage_class;
1642
1643 if (changed & WIPHY_PARAM_RETRY_SHORT)
1644 rdev->wiphy.retry_short = retry_short;
1645 if (changed & WIPHY_PARAM_RETRY_LONG)
1646 rdev->wiphy.retry_long = retry_long;
1647 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1648 rdev->wiphy.frag_threshold = frag_threshold;
1649 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1650 rdev->wiphy.rts_threshold = rts_threshold;
1651 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1652 rdev->wiphy.coverage_class = coverage_class;
1653
1654 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1655 if (result) {
1656 rdev->wiphy.retry_short = old_retry_short;
1657 rdev->wiphy.retry_long = old_retry_long;
1658 rdev->wiphy.frag_threshold = old_frag_threshold;
1659 rdev->wiphy.rts_threshold = old_rts_threshold;
1660 rdev->wiphy.coverage_class = old_coverage_class;
1661 }
1662 }
1663
1664 bad_res:
1665 mutex_unlock(&rdev->mtx);
1666 if (netdev)
1667 dev_put(netdev);
1668 return result;
1669 }
1670
1671
1672 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1673 struct cfg80211_registered_device *rdev,
1674 struct net_device *dev)
1675 {
1676 void *hdr;
1677
1678 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1679 if (!hdr)
1680 return -1;
1681
1682 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1683 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1684 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name) ||
1685 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1686 dev->ieee80211_ptr->iftype) ||
1687 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1688 rdev->devlist_generation ^
1689 (cfg80211_rdev_list_generation << 2)))
1690 goto nla_put_failure;
1691
1692 if (rdev->monitor_channel) {
1693 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1694 rdev->monitor_channel->center_freq) ||
1695 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1696 rdev->monitor_channel_type))
1697 goto nla_put_failure;
1698 }
1699
1700 return genlmsg_end(msg, hdr);
1701
1702 nla_put_failure:
1703 genlmsg_cancel(msg, hdr);
1704 return -EMSGSIZE;
1705 }
1706
1707 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1708 {
1709 int wp_idx = 0;
1710 int if_idx = 0;
1711 int wp_start = cb->args[0];
1712 int if_start = cb->args[1];
1713 struct cfg80211_registered_device *rdev;
1714 struct wireless_dev *wdev;
1715
1716 mutex_lock(&cfg80211_mutex);
1717 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1718 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1719 continue;
1720 if (wp_idx < wp_start) {
1721 wp_idx++;
1722 continue;
1723 }
1724 if_idx = 0;
1725
1726 mutex_lock(&rdev->devlist_mtx);
1727 list_for_each_entry(wdev, &rdev->netdev_list, list) {
1728 if (if_idx < if_start) {
1729 if_idx++;
1730 continue;
1731 }
1732 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1733 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1734 rdev, wdev->netdev) < 0) {
1735 mutex_unlock(&rdev->devlist_mtx);
1736 goto out;
1737 }
1738 if_idx++;
1739 }
1740 mutex_unlock(&rdev->devlist_mtx);
1741
1742 wp_idx++;
1743 }
1744 out:
1745 mutex_unlock(&cfg80211_mutex);
1746
1747 cb->args[0] = wp_idx;
1748 cb->args[1] = if_idx;
1749
1750 return skb->len;
1751 }
1752
1753 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1754 {
1755 struct sk_buff *msg;
1756 struct cfg80211_registered_device *dev = info->user_ptr[0];
1757 struct net_device *netdev = info->user_ptr[1];
1758
1759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1760 if (!msg)
1761 return -ENOMEM;
1762
1763 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1764 dev, netdev) < 0) {
1765 nlmsg_free(msg);
1766 return -ENOBUFS;
1767 }
1768
1769 return genlmsg_reply(msg, info);
1770 }
1771
1772 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1773 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1774 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1775 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1776 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1777 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1778 };
1779
1780 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1781 {
1782 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1783 int flag;
1784
1785 *mntrflags = 0;
1786
1787 if (!nla)
1788 return -EINVAL;
1789
1790 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1791 nla, mntr_flags_policy))
1792 return -EINVAL;
1793
1794 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1795 if (flags[flag])
1796 *mntrflags |= (1<<flag);
1797
1798 return 0;
1799 }
1800
1801 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1802 struct net_device *netdev, u8 use_4addr,
1803 enum nl80211_iftype iftype)
1804 {
1805 if (!use_4addr) {
1806 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1807 return -EBUSY;
1808 return 0;
1809 }
1810
1811 switch (iftype) {
1812 case NL80211_IFTYPE_AP_VLAN:
1813 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1814 return 0;
1815 break;
1816 case NL80211_IFTYPE_STATION:
1817 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1818 return 0;
1819 break;
1820 default:
1821 break;
1822 }
1823
1824 return -EOPNOTSUPP;
1825 }
1826
1827 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1828 {
1829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1830 struct vif_params params;
1831 int err;
1832 enum nl80211_iftype otype, ntype;
1833 struct net_device *dev = info->user_ptr[1];
1834 u32 _flags, *flags = NULL;
1835 bool change = false;
1836
1837 memset(&params, 0, sizeof(params));
1838
1839 otype = ntype = dev->ieee80211_ptr->iftype;
1840
1841 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1842 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1843 if (otype != ntype)
1844 change = true;
1845 if (ntype > NL80211_IFTYPE_MAX)
1846 return -EINVAL;
1847 }
1848
1849 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1850 struct wireless_dev *wdev = dev->ieee80211_ptr;
1851
1852 if (ntype != NL80211_IFTYPE_MESH_POINT)
1853 return -EINVAL;
1854 if (netif_running(dev))
1855 return -EBUSY;
1856
1857 wdev_lock(wdev);
1858 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1859 IEEE80211_MAX_MESH_ID_LEN);
1860 wdev->mesh_id_up_len =
1861 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1862 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1863 wdev->mesh_id_up_len);
1864 wdev_unlock(wdev);
1865 }
1866
1867 if (info->attrs[NL80211_ATTR_4ADDR]) {
1868 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1869 change = true;
1870 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1871 if (err)
1872 return err;
1873 } else {
1874 params.use_4addr = -1;
1875 }
1876
1877 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1878 if (ntype != NL80211_IFTYPE_MONITOR)
1879 return -EINVAL;
1880 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1881 &_flags);
1882 if (err)
1883 return err;
1884
1885 flags = &_flags;
1886 change = true;
1887 }
1888
1889 if (change)
1890 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1891 else
1892 err = 0;
1893
1894 if (!err && params.use_4addr != -1)
1895 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1896
1897 return err;
1898 }
1899
1900 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1901 {
1902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1903 struct vif_params params;
1904 struct net_device *dev;
1905 int err;
1906 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1907 u32 flags;
1908
1909 memset(&params, 0, sizeof(params));
1910
1911 if (!info->attrs[NL80211_ATTR_IFNAME])
1912 return -EINVAL;
1913
1914 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1915 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1916 if (type > NL80211_IFTYPE_MAX)
1917 return -EINVAL;
1918 }
1919
1920 if (!rdev->ops->add_virtual_intf ||
1921 !(rdev->wiphy.interface_modes & (1 << type)))
1922 return -EOPNOTSUPP;
1923
1924 if (info->attrs[NL80211_ATTR_4ADDR]) {
1925 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1926 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
1927 if (err)
1928 return err;
1929 }
1930
1931 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
1932 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
1933 &flags);
1934 dev = rdev->ops->add_virtual_intf(&rdev->wiphy,
1935 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
1936 type, err ? NULL : &flags, &params);
1937 if (IS_ERR(dev))
1938 return PTR_ERR(dev);
1939
1940 if (type == NL80211_IFTYPE_MESH_POINT &&
1941 info->attrs[NL80211_ATTR_MESH_ID]) {
1942 struct wireless_dev *wdev = dev->ieee80211_ptr;
1943
1944 wdev_lock(wdev);
1945 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1946 IEEE80211_MAX_MESH_ID_LEN);
1947 wdev->mesh_id_up_len =
1948 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1949 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1950 wdev->mesh_id_up_len);
1951 wdev_unlock(wdev);
1952 }
1953
1954 return 0;
1955 }
1956
1957 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
1958 {
1959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1960 struct net_device *dev = info->user_ptr[1];
1961
1962 if (!rdev->ops->del_virtual_intf)
1963 return -EOPNOTSUPP;
1964
1965 return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
1966 }
1967
1968 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
1969 {
1970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1971 struct net_device *dev = info->user_ptr[1];
1972 u16 noack_map;
1973
1974 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
1975 return -EINVAL;
1976
1977 if (!rdev->ops->set_noack_map)
1978 return -EOPNOTSUPP;
1979
1980 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
1981
1982 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
1983 }
1984
1985 struct get_key_cookie {
1986 struct sk_buff *msg;
1987 int error;
1988 int idx;
1989 };
1990
1991 static void get_key_callback(void *c, struct key_params *params)
1992 {
1993 struct nlattr *key;
1994 struct get_key_cookie *cookie = c;
1995
1996 if ((params->key &&
1997 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
1998 params->key_len, params->key)) ||
1999 (params->seq &&
2000 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2001 params->seq_len, params->seq)) ||
2002 (params->cipher &&
2003 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2004 params->cipher)))
2005 goto nla_put_failure;
2006
2007 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2008 if (!key)
2009 goto nla_put_failure;
2010
2011 if ((params->key &&
2012 nla_put(cookie->msg, NL80211_KEY_DATA,
2013 params->key_len, params->key)) ||
2014 (params->seq &&
2015 nla_put(cookie->msg, NL80211_KEY_SEQ,
2016 params->seq_len, params->seq)) ||
2017 (params->cipher &&
2018 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2019 params->cipher)))
2020 goto nla_put_failure;
2021
2022 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2023 goto nla_put_failure;
2024
2025 nla_nest_end(cookie->msg, key);
2026
2027 return;
2028 nla_put_failure:
2029 cookie->error = 1;
2030 }
2031
2032 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2033 {
2034 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2035 int err;
2036 struct net_device *dev = info->user_ptr[1];
2037 u8 key_idx = 0;
2038 const u8 *mac_addr = NULL;
2039 bool pairwise;
2040 struct get_key_cookie cookie = {
2041 .error = 0,
2042 };
2043 void *hdr;
2044 struct sk_buff *msg;
2045
2046 if (info->attrs[NL80211_ATTR_KEY_IDX])
2047 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2048
2049 if (key_idx > 5)
2050 return -EINVAL;
2051
2052 if (info->attrs[NL80211_ATTR_MAC])
2053 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2054
2055 pairwise = !!mac_addr;
2056 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2057 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2058 if (kt >= NUM_NL80211_KEYTYPES)
2059 return -EINVAL;
2060 if (kt != NL80211_KEYTYPE_GROUP &&
2061 kt != NL80211_KEYTYPE_PAIRWISE)
2062 return -EINVAL;
2063 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2064 }
2065
2066 if (!rdev->ops->get_key)
2067 return -EOPNOTSUPP;
2068
2069 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2070 if (!msg)
2071 return -ENOMEM;
2072
2073 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2074 NL80211_CMD_NEW_KEY);
2075 if (IS_ERR(hdr))
2076 return PTR_ERR(hdr);
2077
2078 cookie.msg = msg;
2079 cookie.idx = key_idx;
2080
2081 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2082 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2083 goto nla_put_failure;
2084 if (mac_addr &&
2085 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2086 goto nla_put_failure;
2087
2088 if (pairwise && mac_addr &&
2089 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2090 return -ENOENT;
2091
2092 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2093 mac_addr, &cookie, get_key_callback);
2094
2095 if (err)
2096 goto free_msg;
2097
2098 if (cookie.error)
2099 goto nla_put_failure;
2100
2101 genlmsg_end(msg, hdr);
2102 return genlmsg_reply(msg, info);
2103
2104 nla_put_failure:
2105 err = -ENOBUFS;
2106 free_msg:
2107 nlmsg_free(msg);
2108 return err;
2109 }
2110
2111 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2112 {
2113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2114 struct key_parse key;
2115 int err;
2116 struct net_device *dev = info->user_ptr[1];
2117
2118 err = nl80211_parse_key(info, &key);
2119 if (err)
2120 return err;
2121
2122 if (key.idx < 0)
2123 return -EINVAL;
2124
2125 /* only support setting default key */
2126 if (!key.def && !key.defmgmt)
2127 return -EINVAL;
2128
2129 wdev_lock(dev->ieee80211_ptr);
2130
2131 if (key.def) {
2132 if (!rdev->ops->set_default_key) {
2133 err = -EOPNOTSUPP;
2134 goto out;
2135 }
2136
2137 err = nl80211_key_allowed(dev->ieee80211_ptr);
2138 if (err)
2139 goto out;
2140
2141 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2142 key.def_uni, key.def_multi);
2143
2144 if (err)
2145 goto out;
2146
2147 #ifdef CONFIG_CFG80211_WEXT
2148 dev->ieee80211_ptr->wext.default_key = key.idx;
2149 #endif
2150 } else {
2151 if (key.def_uni || !key.def_multi) {
2152 err = -EINVAL;
2153 goto out;
2154 }
2155
2156 if (!rdev->ops->set_default_mgmt_key) {
2157 err = -EOPNOTSUPP;
2158 goto out;
2159 }
2160
2161 err = nl80211_key_allowed(dev->ieee80211_ptr);
2162 if (err)
2163 goto out;
2164
2165 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2166 dev, key.idx);
2167 if (err)
2168 goto out;
2169
2170 #ifdef CONFIG_CFG80211_WEXT
2171 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2172 #endif
2173 }
2174
2175 out:
2176 wdev_unlock(dev->ieee80211_ptr);
2177
2178 return err;
2179 }
2180
2181 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2182 {
2183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2184 int err;
2185 struct net_device *dev = info->user_ptr[1];
2186 struct key_parse key;
2187 const u8 *mac_addr = NULL;
2188
2189 err = nl80211_parse_key(info, &key);
2190 if (err)
2191 return err;
2192
2193 if (!key.p.key)
2194 return -EINVAL;
2195
2196 if (info->attrs[NL80211_ATTR_MAC])
2197 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2198
2199 if (key.type == -1) {
2200 if (mac_addr)
2201 key.type = NL80211_KEYTYPE_PAIRWISE;
2202 else
2203 key.type = NL80211_KEYTYPE_GROUP;
2204 }
2205
2206 /* for now */
2207 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2208 key.type != NL80211_KEYTYPE_GROUP)
2209 return -EINVAL;
2210
2211 if (!rdev->ops->add_key)
2212 return -EOPNOTSUPP;
2213
2214 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2215 key.type == NL80211_KEYTYPE_PAIRWISE,
2216 mac_addr))
2217 return -EINVAL;
2218
2219 wdev_lock(dev->ieee80211_ptr);
2220 err = nl80211_key_allowed(dev->ieee80211_ptr);
2221 if (!err)
2222 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2223 key.type == NL80211_KEYTYPE_PAIRWISE,
2224 mac_addr, &key.p);
2225 wdev_unlock(dev->ieee80211_ptr);
2226
2227 return err;
2228 }
2229
2230 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2231 {
2232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2233 int err;
2234 struct net_device *dev = info->user_ptr[1];
2235 u8 *mac_addr = NULL;
2236 struct key_parse key;
2237
2238 err = nl80211_parse_key(info, &key);
2239 if (err)
2240 return err;
2241
2242 if (info->attrs[NL80211_ATTR_MAC])
2243 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2244
2245 if (key.type == -1) {
2246 if (mac_addr)
2247 key.type = NL80211_KEYTYPE_PAIRWISE;
2248 else
2249 key.type = NL80211_KEYTYPE_GROUP;
2250 }
2251
2252 /* for now */
2253 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2254 key.type != NL80211_KEYTYPE_GROUP)
2255 return -EINVAL;
2256
2257 if (!rdev->ops->del_key)
2258 return -EOPNOTSUPP;
2259
2260 wdev_lock(dev->ieee80211_ptr);
2261 err = nl80211_key_allowed(dev->ieee80211_ptr);
2262
2263 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2264 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2265 err = -ENOENT;
2266
2267 if (!err)
2268 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2269 key.type == NL80211_KEYTYPE_PAIRWISE,
2270 mac_addr);
2271
2272 #ifdef CONFIG_CFG80211_WEXT
2273 if (!err) {
2274 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2275 dev->ieee80211_ptr->wext.default_key = -1;
2276 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2277 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2278 }
2279 #endif
2280 wdev_unlock(dev->ieee80211_ptr);
2281
2282 return err;
2283 }
2284
2285 static int nl80211_parse_beacon(struct genl_info *info,
2286 struct cfg80211_beacon_data *bcn)
2287 {
2288 bool haveinfo = false;
2289
2290 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2291 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2292 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2293 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2294 return -EINVAL;
2295
2296 memset(bcn, 0, sizeof(*bcn));
2297
2298 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2299 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2300 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2301 if (!bcn->head_len)
2302 return -EINVAL;
2303 haveinfo = true;
2304 }
2305
2306 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2307 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2308 bcn->tail_len =
2309 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2310 haveinfo = true;
2311 }
2312
2313 if (!haveinfo)
2314 return -EINVAL;
2315
2316 if (info->attrs[NL80211_ATTR_IE]) {
2317 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2318 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2319 }
2320
2321 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2322 bcn->proberesp_ies =
2323 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2324 bcn->proberesp_ies_len =
2325 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2326 }
2327
2328 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2329 bcn->assocresp_ies =
2330 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2331 bcn->assocresp_ies_len =
2332 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2333 }
2334
2335 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2336 bcn->probe_resp =
2337 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2338 bcn->probe_resp_len =
2339 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2340 }
2341
2342 return 0;
2343 }
2344
2345 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2346 struct cfg80211_ap_settings *params)
2347 {
2348 struct wireless_dev *wdev;
2349 bool ret = false;
2350
2351 mutex_lock(&rdev->devlist_mtx);
2352
2353 list_for_each_entry(wdev, &rdev->netdev_list, list) {
2354 if (wdev->iftype != NL80211_IFTYPE_AP &&
2355 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2356 continue;
2357
2358 if (!wdev->preset_chan)
2359 continue;
2360
2361 params->channel = wdev->preset_chan;
2362 params->channel_type = wdev->preset_chantype;
2363 ret = true;
2364 break;
2365 }
2366
2367 mutex_unlock(&rdev->devlist_mtx);
2368
2369 return ret;
2370 }
2371
2372 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2373 {
2374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2375 struct net_device *dev = info->user_ptr[1];
2376 struct wireless_dev *wdev = dev->ieee80211_ptr;
2377 struct cfg80211_ap_settings params;
2378 int err;
2379
2380 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2381 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2382 return -EOPNOTSUPP;
2383
2384 if (!rdev->ops->start_ap)
2385 return -EOPNOTSUPP;
2386
2387 if (wdev->beacon_interval)
2388 return -EALREADY;
2389
2390 memset(&params, 0, sizeof(params));
2391
2392 /* these are required for START_AP */
2393 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2394 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2395 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2396 return -EINVAL;
2397
2398 err = nl80211_parse_beacon(info, &params.beacon);
2399 if (err)
2400 return err;
2401
2402 params.beacon_interval =
2403 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2404 params.dtim_period =
2405 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2406
2407 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2408 if (err)
2409 return err;
2410
2411 /*
2412 * In theory, some of these attributes should be required here
2413 * but since they were not used when the command was originally
2414 * added, keep them optional for old user space programs to let
2415 * them continue to work with drivers that do not need the
2416 * additional information -- drivers must check!
2417 */
2418 if (info->attrs[NL80211_ATTR_SSID]) {
2419 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2420 params.ssid_len =
2421 nla_len(info->attrs[NL80211_ATTR_SSID]);
2422 if (params.ssid_len == 0 ||
2423 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2424 return -EINVAL;
2425 }
2426
2427 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2428 params.hidden_ssid = nla_get_u32(
2429 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2430 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2431 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2432 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2433 return -EINVAL;
2434 }
2435
2436 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2437
2438 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2439 params.auth_type = nla_get_u32(
2440 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2441 if (!nl80211_valid_auth_type(params.auth_type))
2442 return -EINVAL;
2443 } else
2444 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2445
2446 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2447 NL80211_MAX_NR_CIPHER_SUITES);
2448 if (err)
2449 return err;
2450
2451 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2452 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2453 return -EOPNOTSUPP;
2454 params.inactivity_timeout = nla_get_u16(
2455 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2456 }
2457
2458 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2459 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2460
2461 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2462 !nl80211_valid_channel_type(info, &channel_type))
2463 return -EINVAL;
2464
2465 params.channel = rdev_freq_to_chan(rdev,
2466 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2467 channel_type);
2468 if (!params.channel)
2469 return -EINVAL;
2470 params.channel_type = channel_type;
2471 } else if (wdev->preset_chan) {
2472 params.channel = wdev->preset_chan;
2473 params.channel_type = wdev->preset_chantype;
2474 } else if (!nl80211_get_ap_channel(rdev, &params))
2475 return -EINVAL;
2476
2477 if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2478 params.channel_type))
2479 return -EINVAL;
2480
2481 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2482 if (!err) {
2483 wdev->preset_chan = params.channel;
2484 wdev->preset_chantype = params.channel_type;
2485 wdev->beacon_interval = params.beacon_interval;
2486 wdev->channel = params.channel;
2487 }
2488 return err;
2489 }
2490
2491 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2492 {
2493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2494 struct net_device *dev = info->user_ptr[1];
2495 struct wireless_dev *wdev = dev->ieee80211_ptr;
2496 struct cfg80211_beacon_data params;
2497 int err;
2498
2499 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2500 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2501 return -EOPNOTSUPP;
2502
2503 if (!rdev->ops->change_beacon)
2504 return -EOPNOTSUPP;
2505
2506 if (!wdev->beacon_interval)
2507 return -EINVAL;
2508
2509 err = nl80211_parse_beacon(info, &params);
2510 if (err)
2511 return err;
2512
2513 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2514 }
2515
2516 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2517 {
2518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2519 struct net_device *dev = info->user_ptr[1];
2520
2521 return cfg80211_stop_ap(rdev, dev);
2522 }
2523
2524 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2525 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2526 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2527 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2528 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2529 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2530 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2531 };
2532
2533 static int parse_station_flags(struct genl_info *info,
2534 enum nl80211_iftype iftype,
2535 struct station_parameters *params)
2536 {
2537 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2538 struct nlattr *nla;
2539 int flag;
2540
2541 /*
2542 * Try parsing the new attribute first so userspace
2543 * can specify both for older kernels.
2544 */
2545 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2546 if (nla) {
2547 struct nl80211_sta_flag_update *sta_flags;
2548
2549 sta_flags = nla_data(nla);
2550 params->sta_flags_mask = sta_flags->mask;
2551 params->sta_flags_set = sta_flags->set;
2552 if ((params->sta_flags_mask |
2553 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2554 return -EINVAL;
2555 return 0;
2556 }
2557
2558 /* if present, parse the old attribute */
2559
2560 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2561 if (!nla)
2562 return 0;
2563
2564 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2565 nla, sta_flags_policy))
2566 return -EINVAL;
2567
2568 /*
2569 * Only allow certain flags for interface types so that
2570 * other attributes are silently ignored. Remember that
2571 * this is backward compatibility code with old userspace
2572 * and shouldn't be hit in other cases anyway.
2573 */
2574 switch (iftype) {
2575 case NL80211_IFTYPE_AP:
2576 case NL80211_IFTYPE_AP_VLAN:
2577 case NL80211_IFTYPE_P2P_GO:
2578 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2579 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2580 BIT(NL80211_STA_FLAG_WME) |
2581 BIT(NL80211_STA_FLAG_MFP);
2582 break;
2583 case NL80211_IFTYPE_P2P_CLIENT:
2584 case NL80211_IFTYPE_STATION:
2585 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2586 BIT(NL80211_STA_FLAG_TDLS_PEER);
2587 break;
2588 case NL80211_IFTYPE_MESH_POINT:
2589 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2590 BIT(NL80211_STA_FLAG_MFP) |
2591 BIT(NL80211_STA_FLAG_AUTHORIZED);
2592 default:
2593 return -EINVAL;
2594 }
2595
2596 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2597 if (flags[flag]) {
2598 params->sta_flags_set |= (1<<flag);
2599
2600 /* no longer support new API additions in old API */
2601 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2602 return -EINVAL;
2603 }
2604 }
2605
2606 return 0;
2607 }
2608
2609 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2610 int attr)
2611 {
2612 struct nlattr *rate;
2613 u16 bitrate;
2614
2615 rate = nla_nest_start(msg, attr);
2616 if (!rate)
2617 goto nla_put_failure;
2618
2619 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2620 bitrate = cfg80211_calculate_bitrate(info);
2621 if ((bitrate > 0 &&
2622 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate)) ||
2623 ((info->flags & RATE_INFO_FLAGS_MCS) &&
2624 nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2625 ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2626 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2627 ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2628 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2629 goto nla_put_failure;
2630
2631 nla_nest_end(msg, rate);
2632 return true;
2633
2634 nla_put_failure:
2635 return false;
2636 }
2637
2638 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2639 int flags,
2640 struct cfg80211_registered_device *rdev,
2641 struct net_device *dev,
2642 const u8 *mac_addr, struct station_info *sinfo)
2643 {
2644 void *hdr;
2645 struct nlattr *sinfoattr, *bss_param;
2646
2647 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2648 if (!hdr)
2649 return -1;
2650
2651 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2652 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2653 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2654 goto nla_put_failure;
2655
2656 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2657 if (!sinfoattr)
2658 goto nla_put_failure;
2659 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2660 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2661 sinfo->connected_time))
2662 goto nla_put_failure;
2663 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2664 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2665 sinfo->inactive_time))
2666 goto nla_put_failure;
2667 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2668 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2669 sinfo->rx_bytes))
2670 goto nla_put_failure;
2671 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2672 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2673 sinfo->tx_bytes))
2674 goto nla_put_failure;
2675 if ((sinfo->filled & STATION_INFO_LLID) &&
2676 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2677 goto nla_put_failure;
2678 if ((sinfo->filled & STATION_INFO_PLID) &&
2679 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2680 goto nla_put_failure;
2681 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2682 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2683 sinfo->plink_state))
2684 goto nla_put_failure;
2685 switch (rdev->wiphy.signal_type) {
2686 case CFG80211_SIGNAL_TYPE_MBM:
2687 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2688 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2689 sinfo->signal))
2690 goto nla_put_failure;
2691 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2692 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2693 sinfo->signal_avg))
2694 goto nla_put_failure;
2695 break;
2696 default:
2697 break;
2698 }
2699 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2700 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2701 NL80211_STA_INFO_TX_BITRATE))
2702 goto nla_put_failure;
2703 }
2704 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2705 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2706 NL80211_STA_INFO_RX_BITRATE))
2707 goto nla_put_failure;
2708 }
2709 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2710 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2711 sinfo->rx_packets))
2712 goto nla_put_failure;
2713 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2714 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2715 sinfo->tx_packets))
2716 goto nla_put_failure;
2717 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2718 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2719 sinfo->tx_retries))
2720 goto nla_put_failure;
2721 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2722 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2723 sinfo->tx_failed))
2724 goto nla_put_failure;
2725 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2726 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2727 sinfo->beacon_loss_count))
2728 goto nla_put_failure;
2729 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2730 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2731 if (!bss_param)
2732 goto nla_put_failure;
2733
2734 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2735 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2736 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2737 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2738 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2739 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2740 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2741 sinfo->bss_param.dtim_period) ||
2742 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2743 sinfo->bss_param.beacon_interval))
2744 goto nla_put_failure;
2745
2746 nla_nest_end(msg, bss_param);
2747 }
2748 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2749 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2750 sizeof(struct nl80211_sta_flag_update),
2751 &sinfo->sta_flags))
2752 goto nla_put_failure;
2753 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2754 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2755 sinfo->t_offset))
2756 goto nla_put_failure;
2757 nla_nest_end(msg, sinfoattr);
2758
2759 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2760 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2761 sinfo->assoc_req_ies))
2762 goto nla_put_failure;
2763
2764 return genlmsg_end(msg, hdr);
2765
2766 nla_put_failure:
2767 genlmsg_cancel(msg, hdr);
2768 return -EMSGSIZE;
2769 }
2770
2771 static int nl80211_dump_station(struct sk_buff *skb,
2772 struct netlink_callback *cb)
2773 {
2774 struct station_info sinfo;
2775 struct cfg80211_registered_device *dev;
2776 struct net_device *netdev;
2777 u8 mac_addr[ETH_ALEN];
2778 int sta_idx = cb->args[1];
2779 int err;
2780
2781 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2782 if (err)
2783 return err;
2784
2785 if (!dev->ops->dump_station) {
2786 err = -EOPNOTSUPP;
2787 goto out_err;
2788 }
2789
2790 while (1) {
2791 memset(&sinfo, 0, sizeof(sinfo));
2792 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2793 mac_addr, &sinfo);
2794 if (err == -ENOENT)
2795 break;
2796 if (err)
2797 goto out_err;
2798
2799 if (nl80211_send_station(skb,
2800 NETLINK_CB(cb->skb).pid,
2801 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2802 dev, netdev, mac_addr,
2803 &sinfo) < 0)
2804 goto out;
2805
2806 sta_idx++;
2807 }
2808
2809
2810 out:
2811 cb->args[1] = sta_idx;
2812 err = skb->len;
2813 out_err:
2814 nl80211_finish_netdev_dump(dev);
2815
2816 return err;
2817 }
2818
2819 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2820 {
2821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2822 struct net_device *dev = info->user_ptr[1];
2823 struct station_info sinfo;
2824 struct sk_buff *msg;
2825 u8 *mac_addr = NULL;
2826 int err;
2827
2828 memset(&sinfo, 0, sizeof(sinfo));
2829
2830 if (!info->attrs[NL80211_ATTR_MAC])
2831 return -EINVAL;
2832
2833 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2834
2835 if (!rdev->ops->get_station)
2836 return -EOPNOTSUPP;
2837
2838 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2839 if (err)
2840 return err;
2841
2842 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2843 if (!msg)
2844 return -ENOMEM;
2845
2846 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2847 rdev, dev, mac_addr, &sinfo) < 0) {
2848 nlmsg_free(msg);
2849 return -ENOBUFS;
2850 }
2851
2852 return genlmsg_reply(msg, info);
2853 }
2854
2855 /*
2856 * Get vlan interface making sure it is running and on the right wiphy.
2857 */
2858 static struct net_device *get_vlan(struct genl_info *info,
2859 struct cfg80211_registered_device *rdev)
2860 {
2861 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2862 struct net_device *v;
2863 int ret;
2864
2865 if (!vlanattr)
2866 return NULL;
2867
2868 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
2869 if (!v)
2870 return ERR_PTR(-ENODEV);
2871
2872 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
2873 ret = -EINVAL;
2874 goto error;
2875 }
2876
2877 if (!netif_running(v)) {
2878 ret = -ENETDOWN;
2879 goto error;
2880 }
2881
2882 return v;
2883 error:
2884 dev_put(v);
2885 return ERR_PTR(ret);
2886 }
2887
2888 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
2889 {
2890 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2891 int err;
2892 struct net_device *dev = info->user_ptr[1];
2893 struct station_parameters params;
2894 u8 *mac_addr = NULL;
2895
2896 memset(&params, 0, sizeof(params));
2897
2898 params.listen_interval = -1;
2899 params.plink_state = -1;
2900
2901 if (info->attrs[NL80211_ATTR_STA_AID])
2902 return -EINVAL;
2903
2904 if (!info->attrs[NL80211_ATTR_MAC])
2905 return -EINVAL;
2906
2907 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2908
2909 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
2910 params.supported_rates =
2911 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2912 params.supported_rates_len =
2913 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
2914 }
2915
2916 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
2917 params.listen_interval =
2918 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
2919
2920 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
2921 params.ht_capa =
2922 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
2923
2924 if (!rdev->ops->change_station)
2925 return -EOPNOTSUPP;
2926
2927 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
2928 return -EINVAL;
2929
2930 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
2931 params.plink_action =
2932 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
2933
2934 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
2935 params.plink_state =
2936 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
2937
2938 switch (dev->ieee80211_ptr->iftype) {
2939 case NL80211_IFTYPE_AP:
2940 case NL80211_IFTYPE_AP_VLAN:
2941 case NL80211_IFTYPE_P2P_GO:
2942 /* disallow mesh-specific things */
2943 if (params.plink_action)
2944 return -EINVAL;
2945
2946 /* TDLS can't be set, ... */
2947 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2948 return -EINVAL;
2949 /*
2950 * ... but don't bother the driver with it. This works around
2951 * a hostapd/wpa_supplicant issue -- it always includes the
2952 * TLDS_PEER flag in the mask even for AP mode.
2953 */
2954 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2955
2956 /* accept only the listed bits */
2957 if (params.sta_flags_mask &
2958 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
2959 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2960 BIT(NL80211_STA_FLAG_WME) |
2961 BIT(NL80211_STA_FLAG_MFP)))
2962 return -EINVAL;
2963
2964 /* must be last in here for error handling */
2965 params.vlan = get_vlan(info, rdev);
2966 if (IS_ERR(params.vlan))
2967 return PTR_ERR(params.vlan);
2968 break;
2969 case NL80211_IFTYPE_P2P_CLIENT:
2970 case NL80211_IFTYPE_STATION:
2971 /*
2972 * Don't allow userspace to change the TDLS_PEER flag,
2973 * but silently ignore attempts to change it since we
2974 * don't have state here to verify that it doesn't try
2975 * to change the flag.
2976 */
2977 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
2978 /* fall through */
2979 case NL80211_IFTYPE_ADHOC:
2980 /* disallow things sta doesn't support */
2981 if (params.plink_action)
2982 return -EINVAL;
2983 if (params.ht_capa)
2984 return -EINVAL;
2985 if (params.listen_interval >= 0)
2986 return -EINVAL;
2987 /* reject any changes other than AUTHORIZED */
2988 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
2989 return -EINVAL;
2990 break;
2991 case NL80211_IFTYPE_MESH_POINT:
2992 /* disallow things mesh doesn't support */
2993 if (params.vlan)
2994 return -EINVAL;
2995 if (params.ht_capa)
2996 return -EINVAL;
2997 if (params.listen_interval >= 0)
2998 return -EINVAL;
2999 /*
3000 * No special handling for TDLS here -- the userspace
3001 * mesh code doesn't have this bug.
3002 */
3003 if (params.sta_flags_mask &
3004 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3005 BIT(NL80211_STA_FLAG_MFP) |
3006 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3007 return -EINVAL;
3008 break;
3009 default:
3010 return -EOPNOTSUPP;
3011 }
3012
3013 /* be aware of params.vlan when changing code here */
3014
3015 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
3016
3017 if (params.vlan)
3018 dev_put(params.vlan);
3019
3020 return err;
3021 }
3022
3023 static struct nla_policy
3024 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3025 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3026 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3027 };
3028
3029 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3030 {
3031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3032 int err;
3033 struct net_device *dev = info->user_ptr[1];
3034 struct station_parameters params;
3035 u8 *mac_addr = NULL;
3036
3037 memset(&params, 0, sizeof(params));
3038
3039 if (!info->attrs[NL80211_ATTR_MAC])
3040 return -EINVAL;
3041
3042 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3043 return -EINVAL;
3044
3045 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3046 return -EINVAL;
3047
3048 if (!info->attrs[NL80211_ATTR_STA_AID])
3049 return -EINVAL;
3050
3051 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3052 params.supported_rates =
3053 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3054 params.supported_rates_len =
3055 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3056 params.listen_interval =
3057 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3058
3059 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3060 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3061 return -EINVAL;
3062
3063 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3064 params.ht_capa =
3065 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3066
3067 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3068 params.plink_action =
3069 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3070
3071 if (!rdev->ops->add_station)
3072 return -EOPNOTSUPP;
3073
3074 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3075 return -EINVAL;
3076
3077 switch (dev->ieee80211_ptr->iftype) {
3078 case NL80211_IFTYPE_AP:
3079 case NL80211_IFTYPE_AP_VLAN:
3080 case NL80211_IFTYPE_P2P_GO:
3081 /* parse WME attributes if sta is WME capable */
3082 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3083 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3084 info->attrs[NL80211_ATTR_STA_WME]) {
3085 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3086 struct nlattr *nla;
3087
3088 nla = info->attrs[NL80211_ATTR_STA_WME];
3089 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3090 nl80211_sta_wme_policy);
3091 if (err)
3092 return err;
3093
3094 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3095 params.uapsd_queues =
3096 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3097 if (params.uapsd_queues &
3098 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3099 return -EINVAL;
3100
3101 if (tb[NL80211_STA_WME_MAX_SP])
3102 params.max_sp =
3103 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3104
3105 if (params.max_sp &
3106 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3107 return -EINVAL;
3108
3109 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3110 }
3111 /* TDLS peers cannot be added */
3112 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3113 return -EINVAL;
3114 /* but don't bother the driver with it */
3115 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3116
3117 /* must be last in here for error handling */
3118 params.vlan = get_vlan(info, rdev);
3119 if (IS_ERR(params.vlan))
3120 return PTR_ERR(params.vlan);
3121 break;
3122 case NL80211_IFTYPE_MESH_POINT:
3123 /* TDLS peers cannot be added */
3124 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3125 return -EINVAL;
3126 break;
3127 case NL80211_IFTYPE_STATION:
3128 /* Only TDLS peers can be added */
3129 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3130 return -EINVAL;
3131 /* Can only add if TDLS ... */
3132 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3133 return -EOPNOTSUPP;
3134 /* ... with external setup is supported */
3135 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3136 return -EOPNOTSUPP;
3137 break;
3138 default:
3139 return -EOPNOTSUPP;
3140 }
3141
3142 /* be aware of params.vlan when changing code here */
3143
3144 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3145
3146 if (params.vlan)
3147 dev_put(params.vlan);
3148 return err;
3149 }
3150
3151 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3152 {
3153 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3154 struct net_device *dev = info->user_ptr[1];
3155 u8 *mac_addr = NULL;
3156
3157 if (info->attrs[NL80211_ATTR_MAC])
3158 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3159
3160 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3161 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3162 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3163 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3164 return -EINVAL;
3165
3166 if (!rdev->ops->del_station)
3167 return -EOPNOTSUPP;
3168
3169 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3170 }
3171
3172 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
3173 int flags, struct net_device *dev,
3174 u8 *dst, u8 *next_hop,
3175 struct mpath_info *pinfo)
3176 {
3177 void *hdr;
3178 struct nlattr *pinfoattr;
3179
3180 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
3181 if (!hdr)
3182 return -1;
3183
3184 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3185 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3186 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3187 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3188 goto nla_put_failure;
3189
3190 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3191 if (!pinfoattr)
3192 goto nla_put_failure;
3193 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3194 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3195 pinfo->frame_qlen))
3196 goto nla_put_failure;
3197 if (((pinfo->filled & MPATH_INFO_SN) &&
3198 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3199 ((pinfo->filled & MPATH_INFO_METRIC) &&
3200 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3201 pinfo->metric)) ||
3202 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3203 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3204 pinfo->exptime)) ||
3205 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3206 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3207 pinfo->flags)) ||
3208 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3209 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3210 pinfo->discovery_timeout)) ||
3211 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3212 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3213 pinfo->discovery_retries)))
3214 goto nla_put_failure;
3215
3216 nla_nest_end(msg, pinfoattr);
3217
3218 return genlmsg_end(msg, hdr);
3219
3220 nla_put_failure:
3221 genlmsg_cancel(msg, hdr);
3222 return -EMSGSIZE;
3223 }
3224
3225 static int nl80211_dump_mpath(struct sk_buff *skb,
3226 struct netlink_callback *cb)
3227 {
3228 struct mpath_info pinfo;
3229 struct cfg80211_registered_device *dev;
3230 struct net_device *netdev;
3231 u8 dst[ETH_ALEN];
3232 u8 next_hop[ETH_ALEN];
3233 int path_idx = cb->args[1];
3234 int err;
3235
3236 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3237 if (err)
3238 return err;
3239
3240 if (!dev->ops->dump_mpath) {
3241 err = -EOPNOTSUPP;
3242 goto out_err;
3243 }
3244
3245 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3246 err = -EOPNOTSUPP;
3247 goto out_err;
3248 }
3249
3250 while (1) {
3251 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3252 dst, next_hop, &pinfo);
3253 if (err == -ENOENT)
3254 break;
3255 if (err)
3256 goto out_err;
3257
3258 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
3259 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3260 netdev, dst, next_hop,
3261 &pinfo) < 0)
3262 goto out;
3263
3264 path_idx++;
3265 }
3266
3267
3268 out:
3269 cb->args[1] = path_idx;
3270 err = skb->len;
3271 out_err:
3272 nl80211_finish_netdev_dump(dev);
3273 return err;
3274 }
3275
3276 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3277 {
3278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279 int err;
3280 struct net_device *dev = info->user_ptr[1];
3281 struct mpath_info pinfo;
3282 struct sk_buff *msg;
3283 u8 *dst = NULL;
3284 u8 next_hop[ETH_ALEN];
3285
3286 memset(&pinfo, 0, sizeof(pinfo));
3287
3288 if (!info->attrs[NL80211_ATTR_MAC])
3289 return -EINVAL;
3290
3291 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3292
3293 if (!rdev->ops->get_mpath)
3294 return -EOPNOTSUPP;
3295
3296 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3297 return -EOPNOTSUPP;
3298
3299 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3300 if (err)
3301 return err;
3302
3303 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3304 if (!msg)
3305 return -ENOMEM;
3306
3307 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3308 dev, dst, next_hop, &pinfo) < 0) {
3309 nlmsg_free(msg);
3310 return -ENOBUFS;
3311 }
3312
3313 return genlmsg_reply(msg, info);
3314 }
3315
3316 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3317 {
3318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3319 struct net_device *dev = info->user_ptr[1];
3320 u8 *dst = NULL;
3321 u8 *next_hop = NULL;
3322
3323 if (!info->attrs[NL80211_ATTR_MAC])
3324 return -EINVAL;
3325
3326 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3327 return -EINVAL;
3328
3329 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3330 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3331
3332 if (!rdev->ops->change_mpath)
3333 return -EOPNOTSUPP;
3334
3335 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3336 return -EOPNOTSUPP;
3337
3338 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3339 }
3340
3341 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3342 {
3343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3344 struct net_device *dev = info->user_ptr[1];
3345 u8 *dst = NULL;
3346 u8 *next_hop = NULL;
3347
3348 if (!info->attrs[NL80211_ATTR_MAC])
3349 return -EINVAL;
3350
3351 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3352 return -EINVAL;
3353
3354 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3355 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3356
3357 if (!rdev->ops->add_mpath)
3358 return -EOPNOTSUPP;
3359
3360 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3361 return -EOPNOTSUPP;
3362
3363 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3364 }
3365
3366 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3367 {
3368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3369 struct net_device *dev = info->user_ptr[1];
3370 u8 *dst = NULL;
3371
3372 if (info->attrs[NL80211_ATTR_MAC])
3373 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3374
3375 if (!rdev->ops->del_mpath)
3376 return -EOPNOTSUPP;
3377
3378 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3379 }
3380
3381 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3382 {
3383 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3384 struct net_device *dev = info->user_ptr[1];
3385 struct bss_parameters params;
3386
3387 memset(&params, 0, sizeof(params));
3388 /* default to not changing parameters */
3389 params.use_cts_prot = -1;
3390 params.use_short_preamble = -1;
3391 params.use_short_slot_time = -1;
3392 params.ap_isolate = -1;
3393 params.ht_opmode = -1;
3394
3395 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3396 params.use_cts_prot =
3397 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3398 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3399 params.use_short_preamble =
3400 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3401 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3402 params.use_short_slot_time =
3403 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3404 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3405 params.basic_rates =
3406 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3407 params.basic_rates_len =
3408 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3409 }
3410 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3411 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3412 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3413 params.ht_opmode =
3414 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3415
3416 if (!rdev->ops->change_bss)
3417 return -EOPNOTSUPP;
3418
3419 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3420 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3421 return -EOPNOTSUPP;
3422
3423 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3424 }
3425
3426 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3427 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3428 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3429 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3430 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3431 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3432 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3433 };
3434
3435 static int parse_reg_rule(struct nlattr *tb[],
3436 struct ieee80211_reg_rule *reg_rule)
3437 {
3438 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3439 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3440
3441 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3442 return -EINVAL;
3443 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3444 return -EINVAL;
3445 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3446 return -EINVAL;
3447 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3448 return -EINVAL;
3449 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3450 return -EINVAL;
3451
3452 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3453
3454 freq_range->start_freq_khz =
3455 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3456 freq_range->end_freq_khz =
3457 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3458 freq_range->max_bandwidth_khz =
3459 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3460
3461 power_rule->max_eirp =
3462 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3463
3464 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3465 power_rule->max_antenna_gain =
3466 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3467
3468 return 0;
3469 }
3470
3471 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3472 {
3473 int r;
3474 char *data = NULL;
3475
3476 /*
3477 * You should only get this when cfg80211 hasn't yet initialized
3478 * completely when built-in to the kernel right between the time
3479 * window between nl80211_init() and regulatory_init(), if that is
3480 * even possible.
3481 */
3482 mutex_lock(&cfg80211_mutex);
3483 if (unlikely(!cfg80211_regdomain)) {
3484 mutex_unlock(&cfg80211_mutex);
3485 return -EINPROGRESS;
3486 }
3487 mutex_unlock(&cfg80211_mutex);
3488
3489 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3490 return -EINVAL;
3491
3492 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3493
3494 r = regulatory_hint_user(data);
3495
3496 return r;
3497 }
3498
3499 static int nl80211_get_mesh_config(struct sk_buff *skb,
3500 struct genl_info *info)
3501 {
3502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3503 struct net_device *dev = info->user_ptr[1];
3504 struct wireless_dev *wdev = dev->ieee80211_ptr;
3505 struct mesh_config cur_params;
3506 int err = 0;
3507 void *hdr;
3508 struct nlattr *pinfoattr;
3509 struct sk_buff *msg;
3510
3511 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3512 return -EOPNOTSUPP;
3513
3514 if (!rdev->ops->get_mesh_config)
3515 return -EOPNOTSUPP;
3516
3517 wdev_lock(wdev);
3518 /* If not connected, get default parameters */
3519 if (!wdev->mesh_id_len)
3520 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3521 else
3522 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3523 &cur_params);
3524 wdev_unlock(wdev);
3525
3526 if (err)
3527 return err;
3528
3529 /* Draw up a netlink message to send back */
3530 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3531 if (!msg)
3532 return -ENOMEM;
3533 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3534 NL80211_CMD_GET_MESH_CONFIG);
3535 if (!hdr)
3536 goto out;
3537 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3538 if (!pinfoattr)
3539 goto nla_put_failure;
3540 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3541 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3542 cur_params.dot11MeshRetryTimeout) ||
3543 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3544 cur_params.dot11MeshConfirmTimeout) ||
3545 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3546 cur_params.dot11MeshHoldingTimeout) ||
3547 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3548 cur_params.dot11MeshMaxPeerLinks) ||
3549 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3550 cur_params.dot11MeshMaxRetries) ||
3551 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3552 cur_params.dot11MeshTTL) ||
3553 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3554 cur_params.element_ttl) ||
3555 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3556 cur_params.auto_open_plinks) ||
3557 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3558 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3559 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3560 cur_params.dot11MeshHWMPmaxPREQretries) ||
3561 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3562 cur_params.path_refresh_time) ||
3563 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3564 cur_params.min_discovery_timeout) ||
3565 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3566 cur_params.dot11MeshHWMPactivePathTimeout) ||
3567 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3568 cur_params.dot11MeshHWMPpreqMinInterval) ||
3569 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3570 cur_params.dot11MeshHWMPperrMinInterval) ||
3571 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3572 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3573 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3574 cur_params.dot11MeshHWMPRootMode) ||
3575 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3576 cur_params.dot11MeshHWMPRannInterval) ||
3577 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3578 cur_params.dot11MeshGateAnnouncementProtocol) ||
3579 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3580 cur_params.dot11MeshForwarding) ||
3581 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3582 cur_params.rssi_threshold) ||
3583 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3584 cur_params.ht_opmode) ||
3585 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3586 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3587 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3588 cur_params.dot11MeshHWMProotInterval) ||
3589 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3590 cur_params.dot11MeshHWMPconfirmationInterval))
3591 goto nla_put_failure;
3592 nla_nest_end(msg, pinfoattr);
3593 genlmsg_end(msg, hdr);
3594 return genlmsg_reply(msg, info);
3595
3596 nla_put_failure:
3597 genlmsg_cancel(msg, hdr);
3598 out:
3599 nlmsg_free(msg);
3600 return -ENOBUFS;
3601 }
3602
3603 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3604 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3605 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3606 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3607 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3608 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3609 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3610 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3611 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3612 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3613 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3614 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3615 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3616 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3617 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3618 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3619 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3620 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3621 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3622 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3623 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3624 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3625 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3626 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3627 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3628 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3629 };
3630
3631 static const struct nla_policy
3632 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3633 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3634 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3635 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3636 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3637 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3638 .len = IEEE80211_MAX_DATA_LEN },
3639 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3640 };
3641
3642 static int nl80211_parse_mesh_config(struct genl_info *info,
3643 struct mesh_config *cfg,
3644 u32 *mask_out)
3645 {
3646 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3647 u32 mask = 0;
3648
3649 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3650 do {\
3651 if (table[attr_num]) {\
3652 cfg->param = nla_fn(table[attr_num]); \
3653 mask |= (1 << (attr_num - 1)); \
3654 } \
3655 } while (0);\
3656
3657
3658 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3659 return -EINVAL;
3660 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3661 info->attrs[NL80211_ATTR_MESH_CONFIG],
3662 nl80211_meshconf_params_policy))
3663 return -EINVAL;
3664
3665 /* This makes sure that there aren't more than 32 mesh config
3666 * parameters (otherwise our bitfield scheme would not work.) */
3667 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3668
3669 /* Fill in the params struct */
3670 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3671 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3672 nla_get_u16);
3673 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3674 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3675 nla_get_u16);
3676 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3677 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3678 nla_get_u16);
3679 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3680 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3681 nla_get_u16);
3682 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3683 mask, NL80211_MESHCONF_MAX_RETRIES,
3684 nla_get_u8);
3685 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3686 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3687 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3688 mask, NL80211_MESHCONF_ELEMENT_TTL,
3689 nla_get_u8);
3690 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3691 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3692 nla_get_u8);
3693 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3694 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3695 nla_get_u32);
3696 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3697 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3698 nla_get_u8);
3699 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3700 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3701 nla_get_u32);
3702 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3703 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3704 nla_get_u16);
3705 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3706 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3707 nla_get_u32);
3708 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3709 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3710 nla_get_u16);
3711 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3712 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3713 nla_get_u16);
3714 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3715 dot11MeshHWMPnetDiameterTraversalTime, mask,
3716 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3717 nla_get_u16);
3718 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3719 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3720 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3721 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3722 nla_get_u16);
3723 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3724 dot11MeshGateAnnouncementProtocol, mask,
3725 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3726 nla_get_u8);
3727 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3728 mask, NL80211_MESHCONF_FORWARDING,
3729 nla_get_u8);
3730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3731 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3732 nla_get_u32);
3733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3734 mask, NL80211_MESHCONF_HT_OPMODE,
3735 nla_get_u16);
3736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3737 mask,
3738 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3739 nla_get_u32);
3740 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3741 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3742 nla_get_u16);
3743 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3744 dot11MeshHWMPconfirmationInterval, mask,
3745 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3746 nla_get_u16);
3747 if (mask_out)
3748 *mask_out = mask;
3749
3750 return 0;
3751
3752 #undef FILL_IN_MESH_PARAM_IF_SET
3753 }
3754
3755 static int nl80211_parse_mesh_setup(struct genl_info *info,
3756 struct mesh_setup *setup)
3757 {
3758 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3759
3760 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3761 return -EINVAL;
3762 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3763 info->attrs[NL80211_ATTR_MESH_SETUP],
3764 nl80211_mesh_setup_params_policy))
3765 return -EINVAL;
3766
3767 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3768 setup->sync_method =
3769 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3770 IEEE80211_SYNC_METHOD_VENDOR :
3771 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3772
3773 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3774 setup->path_sel_proto =
3775 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3776 IEEE80211_PATH_PROTOCOL_VENDOR :
3777 IEEE80211_PATH_PROTOCOL_HWMP;
3778
3779 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3780 setup->path_metric =
3781 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3782 IEEE80211_PATH_METRIC_VENDOR :
3783 IEEE80211_PATH_METRIC_AIRTIME;
3784
3785
3786 if (tb[NL80211_MESH_SETUP_IE]) {
3787 struct nlattr *ieattr =
3788 tb[NL80211_MESH_SETUP_IE];
3789 if (!is_valid_ie_attr(ieattr))
3790 return -EINVAL;
3791 setup->ie = nla_data(ieattr);
3792 setup->ie_len = nla_len(ieattr);
3793 }
3794 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3795 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3796
3797 return 0;
3798 }
3799
3800 static int nl80211_update_mesh_config(struct sk_buff *skb,
3801 struct genl_info *info)
3802 {
3803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3804 struct net_device *dev = info->user_ptr[1];
3805 struct wireless_dev *wdev = dev->ieee80211_ptr;
3806 struct mesh_config cfg;
3807 u32 mask;
3808 int err;
3809
3810 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3811 return -EOPNOTSUPP;
3812
3813 if (!rdev->ops->update_mesh_config)
3814 return -EOPNOTSUPP;
3815
3816 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3817 if (err)
3818 return err;
3819
3820 wdev_lock(wdev);
3821 if (!wdev->mesh_id_len)
3822 err = -ENOLINK;
3823
3824 if (!err)
3825 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3826 mask, &cfg);
3827
3828 wdev_unlock(wdev);
3829
3830 return err;
3831 }
3832
3833 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3834 {
3835 struct sk_buff *msg;
3836 void *hdr = NULL;
3837 struct nlattr *nl_reg_rules;
3838 unsigned int i;
3839 int err = -EINVAL;
3840
3841 mutex_lock(&cfg80211_mutex);
3842
3843 if (!cfg80211_regdomain)
3844 goto out;
3845
3846 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3847 if (!msg) {
3848 err = -ENOBUFS;
3849 goto out;
3850 }
3851
3852 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3853 NL80211_CMD_GET_REG);
3854 if (!hdr)
3855 goto put_failure;
3856
3857 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
3858 cfg80211_regdomain->alpha2) ||
3859 (cfg80211_regdomain->dfs_region &&
3860 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
3861 cfg80211_regdomain->dfs_region)))
3862 goto nla_put_failure;
3863
3864 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
3865 if (!nl_reg_rules)
3866 goto nla_put_failure;
3867
3868 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
3869 struct nlattr *nl_reg_rule;
3870 const struct ieee80211_reg_rule *reg_rule;
3871 const struct ieee80211_freq_range *freq_range;
3872 const struct ieee80211_power_rule *power_rule;
3873
3874 reg_rule = &cfg80211_regdomain->reg_rules[i];
3875 freq_range = &reg_rule->freq_range;
3876 power_rule = &reg_rule->power_rule;
3877
3878 nl_reg_rule = nla_nest_start(msg, i);
3879 if (!nl_reg_rule)
3880 goto nla_put_failure;
3881
3882 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
3883 reg_rule->flags) ||
3884 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
3885 freq_range->start_freq_khz) ||
3886 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
3887 freq_range->end_freq_khz) ||
3888 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
3889 freq_range->max_bandwidth_khz) ||
3890 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
3891 power_rule->max_antenna_gain) ||
3892 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
3893 power_rule->max_eirp))
3894 goto nla_put_failure;
3895
3896 nla_nest_end(msg, nl_reg_rule);
3897 }
3898
3899 nla_nest_end(msg, nl_reg_rules);
3900
3901 genlmsg_end(msg, hdr);
3902 err = genlmsg_reply(msg, info);
3903 goto out;
3904
3905 nla_put_failure:
3906 genlmsg_cancel(msg, hdr);
3907 put_failure:
3908 nlmsg_free(msg);
3909 err = -EMSGSIZE;
3910 out:
3911 mutex_unlock(&cfg80211_mutex);
3912 return err;
3913 }
3914
3915 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
3916 {
3917 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
3918 struct nlattr *nl_reg_rule;
3919 char *alpha2 = NULL;
3920 int rem_reg_rules = 0, r = 0;
3921 u32 num_rules = 0, rule_idx = 0, size_of_regd;
3922 u8 dfs_region = 0;
3923 struct ieee80211_regdomain *rd = NULL;
3924
3925 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3926 return -EINVAL;
3927
3928 if (!info->attrs[NL80211_ATTR_REG_RULES])
3929 return -EINVAL;
3930
3931 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3932
3933 if (info->attrs[NL80211_ATTR_DFS_REGION])
3934 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
3935
3936 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3937 rem_reg_rules) {
3938 num_rules++;
3939 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
3940 return -EINVAL;
3941 }
3942
3943 mutex_lock(&cfg80211_mutex);
3944
3945 if (!reg_is_valid_request(alpha2)) {
3946 r = -EINVAL;
3947 goto bad_reg;
3948 }
3949
3950 size_of_regd = sizeof(struct ieee80211_regdomain) +
3951 (num_rules * sizeof(struct ieee80211_reg_rule));
3952
3953 rd = kzalloc(size_of_regd, GFP_KERNEL);
3954 if (!rd) {
3955 r = -ENOMEM;
3956 goto bad_reg;
3957 }
3958
3959 rd->n_reg_rules = num_rules;
3960 rd->alpha2[0] = alpha2[0];
3961 rd->alpha2[1] = alpha2[1];
3962
3963 /*
3964 * Disable DFS master mode if the DFS region was
3965 * not supported or known on this kernel.
3966 */
3967 if (reg_supported_dfs_region(dfs_region))
3968 rd->dfs_region = dfs_region;
3969
3970 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
3971 rem_reg_rules) {
3972 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
3973 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
3974 reg_rule_policy);
3975 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
3976 if (r)
3977 goto bad_reg;
3978
3979 rule_idx++;
3980
3981 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
3982 r = -EINVAL;
3983 goto bad_reg;
3984 }
3985 }
3986
3987 BUG_ON(rule_idx != num_rules);
3988
3989 r = set_regdom(rd);
3990
3991 mutex_unlock(&cfg80211_mutex);
3992
3993 return r;
3994
3995 bad_reg:
3996 mutex_unlock(&cfg80211_mutex);
3997 kfree(rd);
3998 return r;
3999 }
4000
4001 static int validate_scan_freqs(struct nlattr *freqs)
4002 {
4003 struct nlattr *attr1, *attr2;
4004 int n_channels = 0, tmp1, tmp2;
4005
4006 nla_for_each_nested(attr1, freqs, tmp1) {
4007 n_channels++;
4008 /*
4009 * Some hardware has a limited channel list for
4010 * scanning, and it is pretty much nonsensical
4011 * to scan for a channel twice, so disallow that
4012 * and don't require drivers to check that the
4013 * channel list they get isn't longer than what
4014 * they can scan, as long as they can scan all
4015 * the channels they registered at once.
4016 */
4017 nla_for_each_nested(attr2, freqs, tmp2)
4018 if (attr1 != attr2 &&
4019 nla_get_u32(attr1) == nla_get_u32(attr2))
4020 return 0;
4021 }
4022
4023 return n_channels;
4024 }
4025
4026 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4027 {
4028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4029 struct net_device *dev = info->user_ptr[1];
4030 struct cfg80211_scan_request *request;
4031 struct nlattr *attr;
4032 struct wiphy *wiphy;
4033 int err, tmp, n_ssids = 0, n_channels, i;
4034 size_t ie_len;
4035
4036 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4037 return -EINVAL;
4038
4039 wiphy = &rdev->wiphy;
4040
4041 if (!rdev->ops->scan)
4042 return -EOPNOTSUPP;
4043
4044 if (rdev->scan_req)
4045 return -EBUSY;
4046
4047 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4048 n_channels = validate_scan_freqs(
4049 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4050 if (!n_channels)
4051 return -EINVAL;
4052 } else {
4053 enum ieee80211_band band;
4054 n_channels = 0;
4055
4056 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4057 if (wiphy->bands[band])
4058 n_channels += wiphy->bands[band]->n_channels;
4059 }
4060
4061 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4062 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4063 n_ssids++;
4064
4065 if (n_ssids > wiphy->max_scan_ssids)
4066 return -EINVAL;
4067
4068 if (info->attrs[NL80211_ATTR_IE])
4069 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4070 else
4071 ie_len = 0;
4072
4073 if (ie_len > wiphy->max_scan_ie_len)
4074 return -EINVAL;
4075
4076 request = kzalloc(sizeof(*request)
4077 + sizeof(*request->ssids) * n_ssids
4078 + sizeof(*request->channels) * n_channels
4079 + ie_len, GFP_KERNEL);
4080 if (!request)
4081 return -ENOMEM;
4082
4083 if (n_ssids)
4084 request->ssids = (void *)&request->channels[n_channels];
4085 request->n_ssids = n_ssids;
4086 if (ie_len) {
4087 if (request->ssids)
4088 request->ie = (void *)(request->ssids + n_ssids);
4089 else
4090 request->ie = (void *)(request->channels + n_channels);
4091 }
4092
4093 i = 0;
4094 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4095 /* user specified, bail out if channel not found */
4096 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4097 struct ieee80211_channel *chan;
4098
4099 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4100
4101 if (!chan) {
4102 err = -EINVAL;
4103 goto out_free;
4104 }
4105
4106 /* ignore disabled channels */
4107 if (chan->flags & IEEE80211_CHAN_DISABLED)
4108 continue;
4109
4110 request->channels[i] = chan;
4111 i++;
4112 }
4113 } else {
4114 enum ieee80211_band band;
4115
4116 /* all channels */
4117 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4118 int j;
4119 if (!wiphy->bands[band])
4120 continue;
4121 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4122 struct ieee80211_channel *chan;
4123
4124 chan = &wiphy->bands[band]->channels[j];
4125
4126 if (chan->flags & IEEE80211_CHAN_DISABLED)
4127 continue;
4128
4129 request->channels[i] = chan;
4130 i++;
4131 }
4132 }
4133 }
4134
4135 if (!i) {
4136 err = -EINVAL;
4137 goto out_free;
4138 }
4139
4140 request->n_channels = i;
4141
4142 i = 0;
4143 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4144 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4145 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4146 err = -EINVAL;
4147 goto out_free;
4148 }
4149 request->ssids[i].ssid_len = nla_len(attr);
4150 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4151 i++;
4152 }
4153 }
4154
4155 if (info->attrs[NL80211_ATTR_IE]) {
4156 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4157 memcpy((void *)request->ie,
4158 nla_data(info->attrs[NL80211_ATTR_IE]),
4159 request->ie_len);
4160 }
4161
4162 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4163 if (wiphy->bands[i])
4164 request->rates[i] =
4165 (1 << wiphy->bands[i]->n_bitrates) - 1;
4166
4167 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4168 nla_for_each_nested(attr,
4169 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4170 tmp) {
4171 enum ieee80211_band band = nla_type(attr);
4172
4173 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4174 err = -EINVAL;
4175 goto out_free;
4176 }
4177 err = ieee80211_get_ratemask(wiphy->bands[band],
4178 nla_data(attr),
4179 nla_len(attr),
4180 &request->rates[band]);
4181 if (err)
4182 goto out_free;
4183 }
4184 }
4185
4186 request->no_cck =
4187 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4188
4189 request->dev = dev;
4190 request->wiphy = &rdev->wiphy;
4191
4192 rdev->scan_req = request;
4193 err = rdev->ops->scan(&rdev->wiphy, dev, request);
4194
4195 if (!err) {
4196 nl80211_send_scan_start(rdev, dev);
4197 dev_hold(dev);
4198 } else {
4199 out_free:
4200 rdev->scan_req = NULL;
4201 kfree(request);
4202 }
4203
4204 return err;
4205 }
4206
4207 static int nl80211_start_sched_scan(struct sk_buff *skb,
4208 struct genl_info *info)
4209 {
4210 struct cfg80211_sched_scan_request *request;
4211 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4212 struct net_device *dev = info->user_ptr[1];
4213 struct nlattr *attr;
4214 struct wiphy *wiphy;
4215 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4216 u32 interval;
4217 enum ieee80211_band band;
4218 size_t ie_len;
4219 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4220
4221 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4222 !rdev->ops->sched_scan_start)
4223 return -EOPNOTSUPP;
4224
4225 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4226 return -EINVAL;
4227
4228 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4229 return -EINVAL;
4230
4231 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4232 if (interval == 0)
4233 return -EINVAL;
4234
4235 wiphy = &rdev->wiphy;
4236
4237 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4238 n_channels = validate_scan_freqs(
4239 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4240 if (!n_channels)
4241 return -EINVAL;
4242 } else {
4243 n_channels = 0;
4244
4245 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4246 if (wiphy->bands[band])
4247 n_channels += wiphy->bands[band]->n_channels;
4248 }
4249
4250 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4251 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4252 tmp)
4253 n_ssids++;
4254
4255 if (n_ssids > wiphy->max_sched_scan_ssids)
4256 return -EINVAL;
4257
4258 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4259 nla_for_each_nested(attr,
4260 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4261 tmp)
4262 n_match_sets++;
4263
4264 if (n_match_sets > wiphy->max_match_sets)
4265 return -EINVAL;
4266
4267 if (info->attrs[NL80211_ATTR_IE])
4268 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4269 else
4270 ie_len = 0;
4271
4272 if (ie_len > wiphy->max_sched_scan_ie_len)
4273 return -EINVAL;
4274
4275 mutex_lock(&rdev->sched_scan_mtx);
4276
4277 if (rdev->sched_scan_req) {
4278 err = -EINPROGRESS;
4279 goto out;
4280 }
4281
4282 request = kzalloc(sizeof(*request)
4283 + sizeof(*request->ssids) * n_ssids
4284 + sizeof(*request->match_sets) * n_match_sets
4285 + sizeof(*request->channels) * n_channels
4286 + ie_len, GFP_KERNEL);
4287 if (!request) {
4288 err = -ENOMEM;
4289 goto out;
4290 }
4291
4292 if (n_ssids)
4293 request->ssids = (void *)&request->channels[n_channels];
4294 request->n_ssids = n_ssids;
4295 if (ie_len) {
4296 if (request->ssids)
4297 request->ie = (void *)(request->ssids + n_ssids);
4298 else
4299 request->ie = (void *)(request->channels + n_channels);
4300 }
4301
4302 if (n_match_sets) {
4303 if (request->ie)
4304 request->match_sets = (void *)(request->ie + ie_len);
4305 else if (request->ssids)
4306 request->match_sets =
4307 (void *)(request->ssids + n_ssids);
4308 else
4309 request->match_sets =
4310 (void *)(request->channels + n_channels);
4311 }
4312 request->n_match_sets = n_match_sets;
4313
4314 i = 0;
4315 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4316 /* user specified, bail out if channel not found */
4317 nla_for_each_nested(attr,
4318 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4319 tmp) {
4320 struct ieee80211_channel *chan;
4321
4322 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4323
4324 if (!chan) {
4325 err = -EINVAL;
4326 goto out_free;
4327 }
4328
4329 /* ignore disabled channels */
4330 if (chan->flags & IEEE80211_CHAN_DISABLED)
4331 continue;
4332
4333 request->channels[i] = chan;
4334 i++;
4335 }
4336 } else {
4337 /* all channels */
4338 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4339 int j;
4340 if (!wiphy->bands[band])
4341 continue;
4342 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4343 struct ieee80211_channel *chan;
4344
4345 chan = &wiphy->bands[band]->channels[j];
4346
4347 if (chan->flags & IEEE80211_CHAN_DISABLED)
4348 continue;
4349
4350 request->channels[i] = chan;
4351 i++;
4352 }
4353 }
4354 }
4355
4356 if (!i) {
4357 err = -EINVAL;
4358 goto out_free;
4359 }
4360
4361 request->n_channels = i;
4362
4363 i = 0;
4364 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4365 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4366 tmp) {
4367 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4368 err = -EINVAL;
4369 goto out_free;
4370 }
4371 request->ssids[i].ssid_len = nla_len(attr);
4372 memcpy(request->ssids[i].ssid, nla_data(attr),
4373 nla_len(attr));
4374 i++;
4375 }
4376 }
4377
4378 i = 0;
4379 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4380 nla_for_each_nested(attr,
4381 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4382 tmp) {
4383 struct nlattr *ssid, *rssi;
4384
4385 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4386 nla_data(attr), nla_len(attr),
4387 nl80211_match_policy);
4388 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4389 if (ssid) {
4390 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4391 err = -EINVAL;
4392 goto out_free;
4393 }
4394 memcpy(request->match_sets[i].ssid.ssid,
4395 nla_data(ssid), nla_len(ssid));
4396 request->match_sets[i].ssid.ssid_len =
4397 nla_len(ssid);
4398 }
4399 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4400 if (rssi)
4401 request->rssi_thold = nla_get_u32(rssi);
4402 else
4403 request->rssi_thold =
4404 NL80211_SCAN_RSSI_THOLD_OFF;
4405 i++;
4406 }
4407 }
4408
4409 if (info->attrs[NL80211_ATTR_IE]) {
4410 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4411 memcpy((void *)request->ie,
4412 nla_data(info->attrs[NL80211_ATTR_IE]),
4413 request->ie_len);
4414 }
4415
4416 request->dev = dev;
4417 request->wiphy = &rdev->wiphy;
4418 request->interval = interval;
4419
4420 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4421 if (!err) {
4422 rdev->sched_scan_req = request;
4423 nl80211_send_sched_scan(rdev, dev,
4424 NL80211_CMD_START_SCHED_SCAN);
4425 goto out;
4426 }
4427
4428 out_free:
4429 kfree(request);
4430 out:
4431 mutex_unlock(&rdev->sched_scan_mtx);
4432 return err;
4433 }
4434
4435 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4436 struct genl_info *info)
4437 {
4438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4439 int err;
4440
4441 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4442 !rdev->ops->sched_scan_stop)
4443 return -EOPNOTSUPP;
4444
4445 mutex_lock(&rdev->sched_scan_mtx);
4446 err = __cfg80211_stop_sched_scan(rdev, false);
4447 mutex_unlock(&rdev->sched_scan_mtx);
4448
4449 return err;
4450 }
4451
4452 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4453 u32 seq, int flags,
4454 struct cfg80211_registered_device *rdev,
4455 struct wireless_dev *wdev,
4456 struct cfg80211_internal_bss *intbss)
4457 {
4458 struct cfg80211_bss *res = &intbss->pub;
4459 void *hdr;
4460 struct nlattr *bss;
4461
4462 ASSERT_WDEV_LOCK(wdev);
4463
4464 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4465 NL80211_CMD_NEW_SCAN_RESULTS);
4466 if (!hdr)
4467 return -1;
4468
4469 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4470
4471 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4472 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4473 goto nla_put_failure;
4474
4475 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4476 if (!bss)
4477 goto nla_put_failure;
4478 if ((!is_zero_ether_addr(res->bssid) &&
4479 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4480 (res->information_elements && res->len_information_elements &&
4481 nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4482 res->len_information_elements,
4483 res->information_elements)) ||
4484 (res->beacon_ies && res->len_beacon_ies &&
4485 res->beacon_ies != res->information_elements &&
4486 nla_put(msg, NL80211_BSS_BEACON_IES,
4487 res->len_beacon_ies, res->beacon_ies)))
4488 goto nla_put_failure;
4489 if (res->tsf &&
4490 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4491 goto nla_put_failure;
4492 if (res->beacon_interval &&
4493 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4494 goto nla_put_failure;
4495 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4496 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4497 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4498 jiffies_to_msecs(jiffies - intbss->ts)))
4499 goto nla_put_failure;
4500
4501 switch (rdev->wiphy.signal_type) {
4502 case CFG80211_SIGNAL_TYPE_MBM:
4503 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4504 goto nla_put_failure;
4505 break;
4506 case CFG80211_SIGNAL_TYPE_UNSPEC:
4507 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4508 goto nla_put_failure;
4509 break;
4510 default:
4511 break;
4512 }
4513
4514 switch (wdev->iftype) {
4515 case NL80211_IFTYPE_P2P_CLIENT:
4516 case NL80211_IFTYPE_STATION:
4517 if (intbss == wdev->current_bss &&
4518 nla_put_u32(msg, NL80211_BSS_STATUS,
4519 NL80211_BSS_STATUS_ASSOCIATED))
4520 goto nla_put_failure;
4521 break;
4522 case NL80211_IFTYPE_ADHOC:
4523 if (intbss == wdev->current_bss &&
4524 nla_put_u32(msg, NL80211_BSS_STATUS,
4525 NL80211_BSS_STATUS_IBSS_JOINED))
4526 goto nla_put_failure;
4527 break;
4528 default:
4529 break;
4530 }
4531
4532 nla_nest_end(msg, bss);
4533
4534 return genlmsg_end(msg, hdr);
4535
4536 nla_put_failure:
4537 genlmsg_cancel(msg, hdr);
4538 return -EMSGSIZE;
4539 }
4540
4541 static int nl80211_dump_scan(struct sk_buff *skb,
4542 struct netlink_callback *cb)
4543 {
4544 struct cfg80211_registered_device *rdev;
4545 struct net_device *dev;
4546 struct cfg80211_internal_bss *scan;
4547 struct wireless_dev *wdev;
4548 int start = cb->args[1], idx = 0;
4549 int err;
4550
4551 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4552 if (err)
4553 return err;
4554
4555 wdev = dev->ieee80211_ptr;
4556
4557 wdev_lock(wdev);
4558 spin_lock_bh(&rdev->bss_lock);
4559 cfg80211_bss_expire(rdev);
4560
4561 cb->seq = rdev->bss_generation;
4562
4563 list_for_each_entry(scan, &rdev->bss_list, list) {
4564 if (++idx <= start)
4565 continue;
4566 if (nl80211_send_bss(skb, cb,
4567 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4568 rdev, wdev, scan) < 0) {
4569 idx--;
4570 break;
4571 }
4572 }
4573
4574 spin_unlock_bh(&rdev->bss_lock);
4575 wdev_unlock(wdev);
4576
4577 cb->args[1] = idx;
4578 nl80211_finish_netdev_dump(rdev);
4579
4580 return skb->len;
4581 }
4582
4583 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4584 int flags, struct net_device *dev,
4585 struct survey_info *survey)
4586 {
4587 void *hdr;
4588 struct nlattr *infoattr;
4589
4590 hdr = nl80211hdr_put(msg, pid, seq, flags,
4591 NL80211_CMD_NEW_SURVEY_RESULTS);
4592 if (!hdr)
4593 return -ENOMEM;
4594
4595 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4596 goto nla_put_failure;
4597
4598 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4599 if (!infoattr)
4600 goto nla_put_failure;
4601
4602 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4603 survey->channel->center_freq))
4604 goto nla_put_failure;
4605
4606 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4607 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4608 goto nla_put_failure;
4609 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4610 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4611 goto nla_put_failure;
4612 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4613 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4614 survey->channel_time))
4615 goto nla_put_failure;
4616 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4617 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4618 survey->channel_time_busy))
4619 goto nla_put_failure;
4620 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4621 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4622 survey->channel_time_ext_busy))
4623 goto nla_put_failure;
4624 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4625 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4626 survey->channel_time_rx))
4627 goto nla_put_failure;
4628 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4629 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4630 survey->channel_time_tx))
4631 goto nla_put_failure;
4632
4633 nla_nest_end(msg, infoattr);
4634
4635 return genlmsg_end(msg, hdr);
4636
4637 nla_put_failure:
4638 genlmsg_cancel(msg, hdr);
4639 return -EMSGSIZE;
4640 }
4641
4642 static int nl80211_dump_survey(struct sk_buff *skb,
4643 struct netlink_callback *cb)
4644 {
4645 struct survey_info survey;
4646 struct cfg80211_registered_device *dev;
4647 struct net_device *netdev;
4648 int survey_idx = cb->args[1];
4649 int res;
4650
4651 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4652 if (res)
4653 return res;
4654
4655 if (!dev->ops->dump_survey) {
4656 res = -EOPNOTSUPP;
4657 goto out_err;
4658 }
4659
4660 while (1) {
4661 struct ieee80211_channel *chan;
4662
4663 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4664 &survey);
4665 if (res == -ENOENT)
4666 break;
4667 if (res)
4668 goto out_err;
4669
4670 /* Survey without a channel doesn't make sense */
4671 if (!survey.channel) {
4672 res = -EINVAL;
4673 goto out;
4674 }
4675
4676 chan = ieee80211_get_channel(&dev->wiphy,
4677 survey.channel->center_freq);
4678 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4679 survey_idx++;
4680 continue;
4681 }
4682
4683 if (nl80211_send_survey(skb,
4684 NETLINK_CB(cb->skb).pid,
4685 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4686 netdev,
4687 &survey) < 0)
4688 goto out;
4689 survey_idx++;
4690 }
4691
4692 out:
4693 cb->args[1] = survey_idx;
4694 res = skb->len;
4695 out_err:
4696 nl80211_finish_netdev_dump(dev);
4697 return res;
4698 }
4699
4700 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4701 {
4702 return auth_type <= NL80211_AUTHTYPE_MAX;
4703 }
4704
4705 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4706 {
4707 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4708 NL80211_WPA_VERSION_2));
4709 }
4710
4711 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4712 {
4713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4714 struct net_device *dev = info->user_ptr[1];
4715 struct ieee80211_channel *chan;
4716 const u8 *bssid, *ssid, *ie = NULL;
4717 int err, ssid_len, ie_len = 0;
4718 enum nl80211_auth_type auth_type;
4719 struct key_parse key;
4720 bool local_state_change;
4721
4722 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4723 return -EINVAL;
4724
4725 if (!info->attrs[NL80211_ATTR_MAC])
4726 return -EINVAL;
4727
4728 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4729 return -EINVAL;
4730
4731 if (!info->attrs[NL80211_ATTR_SSID])
4732 return -EINVAL;
4733
4734 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4735 return -EINVAL;
4736
4737 err = nl80211_parse_key(info, &key);
4738 if (err)
4739 return err;
4740
4741 if (key.idx >= 0) {
4742 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4743 return -EINVAL;
4744 if (!key.p.key || !key.p.key_len)
4745 return -EINVAL;
4746 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4747 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4748 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4749 key.p.key_len != WLAN_KEY_LEN_WEP104))
4750 return -EINVAL;
4751 if (key.idx > 4)
4752 return -EINVAL;
4753 } else {
4754 key.p.key_len = 0;
4755 key.p.key = NULL;
4756 }
4757
4758 if (key.idx >= 0) {
4759 int i;
4760 bool ok = false;
4761 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4762 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4763 ok = true;
4764 break;
4765 }
4766 }
4767 if (!ok)
4768 return -EINVAL;
4769 }
4770
4771 if (!rdev->ops->auth)
4772 return -EOPNOTSUPP;
4773
4774 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4775 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4776 return -EOPNOTSUPP;
4777
4778 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4779 chan = ieee80211_get_channel(&rdev->wiphy,
4780 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4781 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4782 return -EINVAL;
4783
4784 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4785 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4786
4787 if (info->attrs[NL80211_ATTR_IE]) {
4788 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4789 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4790 }
4791
4792 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4793 if (!nl80211_valid_auth_type(auth_type))
4794 return -EINVAL;
4795
4796 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4797
4798 /*
4799 * Since we no longer track auth state, ignore
4800 * requests to only change local state.
4801 */
4802 if (local_state_change)
4803 return 0;
4804
4805 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4806 ssid, ssid_len, ie, ie_len,
4807 key.p.key, key.p.key_len, key.idx);
4808 }
4809
4810 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4811 struct genl_info *info,
4812 struct cfg80211_crypto_settings *settings,
4813 int cipher_limit)
4814 {
4815 memset(settings, 0, sizeof(*settings));
4816
4817 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4818
4819 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4820 u16 proto;
4821 proto = nla_get_u16(
4822 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4823 settings->control_port_ethertype = cpu_to_be16(proto);
4824 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4825 proto != ETH_P_PAE)
4826 return -EINVAL;
4827 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4828 settings->control_port_no_encrypt = true;
4829 } else
4830 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4831
4832 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4833 void *data;
4834 int len, i;
4835
4836 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4837 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4838 settings->n_ciphers_pairwise = len / sizeof(u32);
4839
4840 if (len % sizeof(u32))
4841 return -EINVAL;
4842
4843 if (settings->n_ciphers_pairwise > cipher_limit)
4844 return -EINVAL;
4845
4846 memcpy(settings->ciphers_pairwise, data, len);
4847
4848 for (i = 0; i < settings->n_ciphers_pairwise; i++)
4849 if (!cfg80211_supported_cipher_suite(
4850 &rdev->wiphy,
4851 settings->ciphers_pairwise[i]))
4852 return -EINVAL;
4853 }
4854
4855 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
4856 settings->cipher_group =
4857 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
4858 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
4859 settings->cipher_group))
4860 return -EINVAL;
4861 }
4862
4863 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
4864 settings->wpa_versions =
4865 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
4866 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
4867 return -EINVAL;
4868 }
4869
4870 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
4871 void *data;
4872 int len;
4873
4874 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
4875 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
4876 settings->n_akm_suites = len / sizeof(u32);
4877
4878 if (len % sizeof(u32))
4879 return -EINVAL;
4880
4881 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
4882 return -EINVAL;
4883
4884 memcpy(settings->akm_suites, data, len);
4885 }
4886
4887 return 0;
4888 }
4889
4890 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
4891 {
4892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4893 struct net_device *dev = info->user_ptr[1];
4894 struct cfg80211_crypto_settings crypto;
4895 struct ieee80211_channel *chan;
4896 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
4897 int err, ssid_len, ie_len = 0;
4898 bool use_mfp = false;
4899 u32 flags = 0;
4900 struct ieee80211_ht_cap *ht_capa = NULL;
4901 struct ieee80211_ht_cap *ht_capa_mask = NULL;
4902
4903 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4904 return -EINVAL;
4905
4906 if (!info->attrs[NL80211_ATTR_MAC] ||
4907 !info->attrs[NL80211_ATTR_SSID] ||
4908 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
4909 return -EINVAL;
4910
4911 if (!rdev->ops->assoc)
4912 return -EOPNOTSUPP;
4913
4914 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4915 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4916 return -EOPNOTSUPP;
4917
4918 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4919
4920 chan = ieee80211_get_channel(&rdev->wiphy,
4921 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4922 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4923 return -EINVAL;
4924
4925 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4926 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4927
4928 if (info->attrs[NL80211_ATTR_IE]) {
4929 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4930 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4931 }
4932
4933 if (info->attrs[NL80211_ATTR_USE_MFP]) {
4934 enum nl80211_mfp mfp =
4935 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
4936 if (mfp == NL80211_MFP_REQUIRED)
4937 use_mfp = true;
4938 else if (mfp != NL80211_MFP_NO)
4939 return -EINVAL;
4940 }
4941
4942 if (info->attrs[NL80211_ATTR_PREV_BSSID])
4943 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
4944
4945 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
4946 flags |= ASSOC_REQ_DISABLE_HT;
4947
4948 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
4949 ht_capa_mask =
4950 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
4951
4952 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
4953 if (!ht_capa_mask)
4954 return -EINVAL;
4955 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4956 }
4957
4958 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
4959 if (!err)
4960 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
4961 ssid, ssid_len, ie, ie_len, use_mfp,
4962 &crypto, flags, ht_capa,
4963 ht_capa_mask);
4964
4965 return err;
4966 }
4967
4968 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
4969 {
4970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4971 struct net_device *dev = info->user_ptr[1];
4972 const u8 *ie = NULL, *bssid;
4973 int ie_len = 0;
4974 u16 reason_code;
4975 bool local_state_change;
4976
4977 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4978 return -EINVAL;
4979
4980 if (!info->attrs[NL80211_ATTR_MAC])
4981 return -EINVAL;
4982
4983 if (!info->attrs[NL80211_ATTR_REASON_CODE])
4984 return -EINVAL;
4985
4986 if (!rdev->ops->deauth)
4987 return -EOPNOTSUPP;
4988
4989 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4990 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4991 return -EOPNOTSUPP;
4992
4993 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4994
4995 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4996 if (reason_code == 0) {
4997 /* Reason Code 0 is reserved */
4998 return -EINVAL;
4999 }
5000
5001 if (info->attrs[NL80211_ATTR_IE]) {
5002 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5003 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5004 }
5005
5006 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5007
5008 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5009 local_state_change);
5010 }
5011
5012 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5013 {
5014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5015 struct net_device *dev = info->user_ptr[1];
5016 const u8 *ie = NULL, *bssid;
5017 int ie_len = 0;
5018 u16 reason_code;
5019 bool local_state_change;
5020
5021 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5022 return -EINVAL;
5023
5024 if (!info->attrs[NL80211_ATTR_MAC])
5025 return -EINVAL;
5026
5027 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5028 return -EINVAL;
5029
5030 if (!rdev->ops->disassoc)
5031 return -EOPNOTSUPP;
5032
5033 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5034 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5035 return -EOPNOTSUPP;
5036
5037 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5038
5039 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5040 if (reason_code == 0) {
5041 /* Reason Code 0 is reserved */
5042 return -EINVAL;
5043 }
5044
5045 if (info->attrs[NL80211_ATTR_IE]) {
5046 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5047 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5048 }
5049
5050 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5051
5052 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5053 local_state_change);
5054 }
5055
5056 static bool
5057 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5058 int mcast_rate[IEEE80211_NUM_BANDS],
5059 int rateval)
5060 {
5061 struct wiphy *wiphy = &rdev->wiphy;
5062 bool found = false;
5063 int band, i;
5064
5065 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5066 struct ieee80211_supported_band *sband;
5067
5068 sband = wiphy->bands[band];
5069 if (!sband)
5070 continue;
5071
5072 for (i = 0; i < sband->n_bitrates; i++) {
5073 if (sband->bitrates[i].bitrate == rateval) {
5074 mcast_rate[band] = i + 1;
5075 found = true;
5076 break;
5077 }
5078 }
5079 }
5080
5081 return found;
5082 }
5083
5084 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5085 {
5086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5087 struct net_device *dev = info->user_ptr[1];
5088 struct cfg80211_ibss_params ibss;
5089 struct wiphy *wiphy;
5090 struct cfg80211_cached_keys *connkeys = NULL;
5091 int err;
5092
5093 memset(&ibss, 0, sizeof(ibss));
5094
5095 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5096 return -EINVAL;
5097
5098 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5099 !info->attrs[NL80211_ATTR_SSID] ||
5100 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5101 return -EINVAL;
5102
5103 ibss.beacon_interval = 100;
5104
5105 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5106 ibss.beacon_interval =
5107 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5108 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5109 return -EINVAL;
5110 }
5111
5112 if (!rdev->ops->join_ibss)
5113 return -EOPNOTSUPP;
5114
5115 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5116 return -EOPNOTSUPP;
5117
5118 wiphy = &rdev->wiphy;
5119
5120 if (info->attrs[NL80211_ATTR_MAC]) {
5121 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5122
5123 if (!is_valid_ether_addr(ibss.bssid))
5124 return -EINVAL;
5125 }
5126 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5127 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5128
5129 if (info->attrs[NL80211_ATTR_IE]) {
5130 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5131 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5132 }
5133
5134 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5135 enum nl80211_channel_type channel_type;
5136
5137 if (!nl80211_valid_channel_type(info, &channel_type))
5138 return -EINVAL;
5139
5140 if (channel_type != NL80211_CHAN_NO_HT &&
5141 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5142 return -EINVAL;
5143
5144 ibss.channel_type = channel_type;
5145 } else {
5146 ibss.channel_type = NL80211_CHAN_NO_HT;
5147 }
5148
5149 ibss.channel = rdev_freq_to_chan(rdev,
5150 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5151 ibss.channel_type);
5152 if (!ibss.channel ||
5153 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5154 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5155 return -EINVAL;
5156
5157 /* Both channels should be able to initiate communication */
5158 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5159 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5160 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5161 ibss.channel_type))
5162 return -EINVAL;
5163
5164 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5165 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5166
5167 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5168 u8 *rates =
5169 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5170 int n_rates =
5171 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5172 struct ieee80211_supported_band *sband =
5173 wiphy->bands[ibss.channel->band];
5174
5175 err = ieee80211_get_ratemask(sband, rates, n_rates,
5176 &ibss.basic_rates);
5177 if (err)
5178 return err;
5179 }
5180
5181 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5182 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5183 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5184 return -EINVAL;
5185
5186 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5187 connkeys = nl80211_parse_connkeys(rdev,
5188 info->attrs[NL80211_ATTR_KEYS]);
5189 if (IS_ERR(connkeys))
5190 return PTR_ERR(connkeys);
5191 }
5192
5193 ibss.control_port =
5194 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5195
5196 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5197 if (err)
5198 kfree(connkeys);
5199 return err;
5200 }
5201
5202 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5203 {
5204 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5205 struct net_device *dev = info->user_ptr[1];
5206
5207 if (!rdev->ops->leave_ibss)
5208 return -EOPNOTSUPP;
5209
5210 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5211 return -EOPNOTSUPP;
5212
5213 return cfg80211_leave_ibss(rdev, dev, false);
5214 }
5215
5216 #ifdef CONFIG_NL80211_TESTMODE
5217 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5218 .name = "testmode",
5219 };
5220
5221 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5222 {
5223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5224 int err;
5225
5226 if (!info->attrs[NL80211_ATTR_TESTDATA])
5227 return -EINVAL;
5228
5229 err = -EOPNOTSUPP;
5230 if (rdev->ops->testmode_cmd) {
5231 rdev->testmode_info = info;
5232 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5233 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5234 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5235 rdev->testmode_info = NULL;
5236 }
5237
5238 return err;
5239 }
5240
5241 static int nl80211_testmode_dump(struct sk_buff *skb,
5242 struct netlink_callback *cb)
5243 {
5244 struct cfg80211_registered_device *rdev;
5245 int err;
5246 long phy_idx;
5247 void *data = NULL;
5248 int data_len = 0;
5249
5250 if (cb->args[0]) {
5251 /*
5252 * 0 is a valid index, but not valid for args[0],
5253 * so we need to offset by 1.
5254 */
5255 phy_idx = cb->args[0] - 1;
5256 } else {
5257 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5258 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5259 nl80211_policy);
5260 if (err)
5261 return err;
5262
5263 mutex_lock(&cfg80211_mutex);
5264 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5265 nl80211_fam.attrbuf);
5266 if (IS_ERR(rdev)) {
5267 mutex_unlock(&cfg80211_mutex);
5268 return PTR_ERR(rdev);
5269 }
5270 phy_idx = rdev->wiphy_idx;
5271 rdev = NULL;
5272 mutex_unlock(&cfg80211_mutex);
5273
5274 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5275 cb->args[1] =
5276 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5277 }
5278
5279 if (cb->args[1]) {
5280 data = nla_data((void *)cb->args[1]);
5281 data_len = nla_len((void *)cb->args[1]);
5282 }
5283
5284 mutex_lock(&cfg80211_mutex);
5285 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5286 if (!rdev) {
5287 mutex_unlock(&cfg80211_mutex);
5288 return -ENOENT;
5289 }
5290 cfg80211_lock_rdev(rdev);
5291 mutex_unlock(&cfg80211_mutex);
5292
5293 if (!rdev->ops->testmode_dump) {
5294 err = -EOPNOTSUPP;
5295 goto out_err;
5296 }
5297
5298 while (1) {
5299 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
5300 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5301 NL80211_CMD_TESTMODE);
5302 struct nlattr *tmdata;
5303
5304 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5305 genlmsg_cancel(skb, hdr);
5306 break;
5307 }
5308
5309 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5310 if (!tmdata) {
5311 genlmsg_cancel(skb, hdr);
5312 break;
5313 }
5314 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5315 data, data_len);
5316 nla_nest_end(skb, tmdata);
5317
5318 if (err == -ENOBUFS || err == -ENOENT) {
5319 genlmsg_cancel(skb, hdr);
5320 break;
5321 } else if (err) {
5322 genlmsg_cancel(skb, hdr);
5323 goto out_err;
5324 }
5325
5326 genlmsg_end(skb, hdr);
5327 }
5328
5329 err = skb->len;
5330 /* see above */
5331 cb->args[0] = phy_idx + 1;
5332 out_err:
5333 cfg80211_unlock_rdev(rdev);
5334 return err;
5335 }
5336
5337 static struct sk_buff *
5338 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5339 int approxlen, u32 pid, u32 seq, gfp_t gfp)
5340 {
5341 struct sk_buff *skb;
5342 void *hdr;
5343 struct nlattr *data;
5344
5345 skb = nlmsg_new(approxlen + 100, gfp);
5346 if (!skb)
5347 return NULL;
5348
5349 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5350 if (!hdr) {
5351 kfree_skb(skb);
5352 return NULL;
5353 }
5354
5355 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5356 goto nla_put_failure;
5357 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5358
5359 ((void **)skb->cb)[0] = rdev;
5360 ((void **)skb->cb)[1] = hdr;
5361 ((void **)skb->cb)[2] = data;
5362
5363 return skb;
5364
5365 nla_put_failure:
5366 kfree_skb(skb);
5367 return NULL;
5368 }
5369
5370 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5371 int approxlen)
5372 {
5373 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5374
5375 if (WARN_ON(!rdev->testmode_info))
5376 return NULL;
5377
5378 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5379 rdev->testmode_info->snd_pid,
5380 rdev->testmode_info->snd_seq,
5381 GFP_KERNEL);
5382 }
5383 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5384
5385 int cfg80211_testmode_reply(struct sk_buff *skb)
5386 {
5387 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5388 void *hdr = ((void **)skb->cb)[1];
5389 struct nlattr *data = ((void **)skb->cb)[2];
5390
5391 if (WARN_ON(!rdev->testmode_info)) {
5392 kfree_skb(skb);
5393 return -EINVAL;
5394 }
5395
5396 nla_nest_end(skb, data);
5397 genlmsg_end(skb, hdr);
5398 return genlmsg_reply(skb, rdev->testmode_info);
5399 }
5400 EXPORT_SYMBOL(cfg80211_testmode_reply);
5401
5402 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5403 int approxlen, gfp_t gfp)
5404 {
5405 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5406
5407 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5408 }
5409 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5410
5411 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5412 {
5413 void *hdr = ((void **)skb->cb)[1];
5414 struct nlattr *data = ((void **)skb->cb)[2];
5415
5416 nla_nest_end(skb, data);
5417 genlmsg_end(skb, hdr);
5418 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5419 }
5420 EXPORT_SYMBOL(cfg80211_testmode_event);
5421 #endif
5422
5423 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5424 {
5425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5426 struct net_device *dev = info->user_ptr[1];
5427 struct cfg80211_connect_params connect;
5428 struct wiphy *wiphy;
5429 struct cfg80211_cached_keys *connkeys = NULL;
5430 int err;
5431
5432 memset(&connect, 0, sizeof(connect));
5433
5434 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5435 return -EINVAL;
5436
5437 if (!info->attrs[NL80211_ATTR_SSID] ||
5438 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5439 return -EINVAL;
5440
5441 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5442 connect.auth_type =
5443 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5444 if (!nl80211_valid_auth_type(connect.auth_type))
5445 return -EINVAL;
5446 } else
5447 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5448
5449 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5450
5451 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5452 NL80211_MAX_NR_CIPHER_SUITES);
5453 if (err)
5454 return err;
5455
5456 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5457 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5458 return -EOPNOTSUPP;
5459
5460 wiphy = &rdev->wiphy;
5461
5462 connect.bg_scan_period = -1;
5463 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5464 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5465 connect.bg_scan_period =
5466 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5467 }
5468
5469 if (info->attrs[NL80211_ATTR_MAC])
5470 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5471 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5472 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5473
5474 if (info->attrs[NL80211_ATTR_IE]) {
5475 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5476 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5477 }
5478
5479 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5480 connect.channel =
5481 ieee80211_get_channel(wiphy,
5482 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5483 if (!connect.channel ||
5484 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5485 return -EINVAL;
5486 }
5487
5488 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5489 connkeys = nl80211_parse_connkeys(rdev,
5490 info->attrs[NL80211_ATTR_KEYS]);
5491 if (IS_ERR(connkeys))
5492 return PTR_ERR(connkeys);
5493 }
5494
5495 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5496 connect.flags |= ASSOC_REQ_DISABLE_HT;
5497
5498 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5499 memcpy(&connect.ht_capa_mask,
5500 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5501 sizeof(connect.ht_capa_mask));
5502
5503 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5504 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5505 return -EINVAL;
5506 memcpy(&connect.ht_capa,
5507 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5508 sizeof(connect.ht_capa));
5509 }
5510
5511 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5512 if (err)
5513 kfree(connkeys);
5514 return err;
5515 }
5516
5517 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5518 {
5519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5520 struct net_device *dev = info->user_ptr[1];
5521 u16 reason;
5522
5523 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5524 reason = WLAN_REASON_DEAUTH_LEAVING;
5525 else
5526 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5527
5528 if (reason == 0)
5529 return -EINVAL;
5530
5531 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5532 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5533 return -EOPNOTSUPP;
5534
5535 return cfg80211_disconnect(rdev, dev, reason, true);
5536 }
5537
5538 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5539 {
5540 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5541 struct net *net;
5542 int err;
5543 u32 pid;
5544
5545 if (!info->attrs[NL80211_ATTR_PID])
5546 return -EINVAL;
5547
5548 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5549
5550 net = get_net_ns_by_pid(pid);
5551 if (IS_ERR(net))
5552 return PTR_ERR(net);
5553
5554 err = 0;
5555
5556 /* check if anything to do */
5557 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5558 err = cfg80211_switch_netns(rdev, net);
5559
5560 put_net(net);
5561 return err;
5562 }
5563
5564 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5565 {
5566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5567 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5568 struct cfg80211_pmksa *pmksa) = NULL;
5569 struct net_device *dev = info->user_ptr[1];
5570 struct cfg80211_pmksa pmksa;
5571
5572 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5573
5574 if (!info->attrs[NL80211_ATTR_MAC])
5575 return -EINVAL;
5576
5577 if (!info->attrs[NL80211_ATTR_PMKID])
5578 return -EINVAL;
5579
5580 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5581 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5582
5583 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5584 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5585 return -EOPNOTSUPP;
5586
5587 switch (info->genlhdr->cmd) {
5588 case NL80211_CMD_SET_PMKSA:
5589 rdev_ops = rdev->ops->set_pmksa;
5590 break;
5591 case NL80211_CMD_DEL_PMKSA:
5592 rdev_ops = rdev->ops->del_pmksa;
5593 break;
5594 default:
5595 WARN_ON(1);
5596 break;
5597 }
5598
5599 if (!rdev_ops)
5600 return -EOPNOTSUPP;
5601
5602 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5603 }
5604
5605 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5606 {
5607 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5608 struct net_device *dev = info->user_ptr[1];
5609
5610 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5611 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5612 return -EOPNOTSUPP;
5613
5614 if (!rdev->ops->flush_pmksa)
5615 return -EOPNOTSUPP;
5616
5617 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5618 }
5619
5620 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5621 {
5622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5623 struct net_device *dev = info->user_ptr[1];
5624 u8 action_code, dialog_token;
5625 u16 status_code;
5626 u8 *peer;
5627
5628 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5629 !rdev->ops->tdls_mgmt)
5630 return -EOPNOTSUPP;
5631
5632 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5633 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5634 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5635 !info->attrs[NL80211_ATTR_IE] ||
5636 !info->attrs[NL80211_ATTR_MAC])
5637 return -EINVAL;
5638
5639 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5640 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5641 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5642 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5643
5644 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5645 dialog_token, status_code,
5646 nla_data(info->attrs[NL80211_ATTR_IE]),
5647 nla_len(info->attrs[NL80211_ATTR_IE]));
5648 }
5649
5650 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5651 {
5652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5653 struct net_device *dev = info->user_ptr[1];
5654 enum nl80211_tdls_operation operation;
5655 u8 *peer;
5656
5657 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5658 !rdev->ops->tdls_oper)
5659 return -EOPNOTSUPP;
5660
5661 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5662 !info->attrs[NL80211_ATTR_MAC])
5663 return -EINVAL;
5664
5665 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5666 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5667
5668 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5669 }
5670
5671 static int nl80211_remain_on_channel(struct sk_buff *skb,
5672 struct genl_info *info)
5673 {
5674 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5675 struct net_device *dev = info->user_ptr[1];
5676 struct ieee80211_channel *chan;
5677 struct sk_buff *msg;
5678 void *hdr;
5679 u64 cookie;
5680 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5681 u32 freq, duration;
5682 int err;
5683
5684 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5685 !info->attrs[NL80211_ATTR_DURATION])
5686 return -EINVAL;
5687
5688 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5689
5690 if (!rdev->ops->remain_on_channel ||
5691 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5692 return -EOPNOTSUPP;
5693
5694 /*
5695 * We should be on that channel for at least a minimum amount of
5696 * time (10ms) but no longer than the driver supports.
5697 */
5698 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5699 duration > rdev->wiphy.max_remain_on_channel_duration)
5700 return -EINVAL;
5701
5702 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5703 !nl80211_valid_channel_type(info, &channel_type))
5704 return -EINVAL;
5705
5706 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5707 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5708 if (chan == NULL)
5709 return -EINVAL;
5710
5711 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5712 if (!msg)
5713 return -ENOMEM;
5714
5715 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5716 NL80211_CMD_REMAIN_ON_CHANNEL);
5717
5718 if (IS_ERR(hdr)) {
5719 err = PTR_ERR(hdr);
5720 goto free_msg;
5721 }
5722
5723 err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
5724 channel_type, duration, &cookie);
5725
5726 if (err)
5727 goto free_msg;
5728
5729 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5730 goto nla_put_failure;
5731
5732 genlmsg_end(msg, hdr);
5733
5734 return genlmsg_reply(msg, info);
5735
5736 nla_put_failure:
5737 err = -ENOBUFS;
5738 free_msg:
5739 nlmsg_free(msg);
5740 return err;
5741 }
5742
5743 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5744 struct genl_info *info)
5745 {
5746 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5747 struct net_device *dev = info->user_ptr[1];
5748 u64 cookie;
5749
5750 if (!info->attrs[NL80211_ATTR_COOKIE])
5751 return -EINVAL;
5752
5753 if (!rdev->ops->cancel_remain_on_channel)
5754 return -EOPNOTSUPP;
5755
5756 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5757
5758 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
5759 }
5760
5761 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5762 u8 *rates, u8 rates_len)
5763 {
5764 u8 i;
5765 u32 mask = 0;
5766
5767 for (i = 0; i < rates_len; i++) {
5768 int rate = (rates[i] & 0x7f) * 5;
5769 int ridx;
5770 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5771 struct ieee80211_rate *srate =
5772 &sband->bitrates[ridx];
5773 if (rate == srate->bitrate) {
5774 mask |= 1 << ridx;
5775 break;
5776 }
5777 }
5778 if (ridx == sband->n_bitrates)
5779 return 0; /* rate not found */
5780 }
5781
5782 return mask;
5783 }
5784
5785 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5786 u8 *rates, u8 rates_len,
5787 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5788 {
5789 u8 i;
5790
5791 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5792
5793 for (i = 0; i < rates_len; i++) {
5794 int ridx, rbit;
5795
5796 ridx = rates[i] / 8;
5797 rbit = BIT(rates[i] % 8);
5798
5799 /* check validity */
5800 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5801 return false;
5802
5803 /* check availability */
5804 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5805 mcs[ridx] |= rbit;
5806 else
5807 return false;
5808 }
5809
5810 return true;
5811 }
5812
5813 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5814 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5815 .len = NL80211_MAX_SUPP_RATES },
5816 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5817 .len = NL80211_MAX_SUPP_HT_RATES },
5818 };
5819
5820 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5821 struct genl_info *info)
5822 {
5823 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5824 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5825 struct cfg80211_bitrate_mask mask;
5826 int rem, i;
5827 struct net_device *dev = info->user_ptr[1];
5828 struct nlattr *tx_rates;
5829 struct ieee80211_supported_band *sband;
5830
5831 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5832 return -EINVAL;
5833
5834 if (!rdev->ops->set_bitrate_mask)
5835 return -EOPNOTSUPP;
5836
5837 memset(&mask, 0, sizeof(mask));
5838 /* Default to all rates enabled */
5839 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5840 sband = rdev->wiphy.bands[i];
5841 mask.control[i].legacy =
5842 sband ? (1 << sband->n_bitrates) - 1 : 0;
5843 if (sband)
5844 memcpy(mask.control[i].mcs,
5845 sband->ht_cap.mcs.rx_mask,
5846 sizeof(mask.control[i].mcs));
5847 else
5848 memset(mask.control[i].mcs, 0,
5849 sizeof(mask.control[i].mcs));
5850 }
5851
5852 /*
5853 * The nested attribute uses enum nl80211_band as the index. This maps
5854 * directly to the enum ieee80211_band values used in cfg80211.
5855 */
5856 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5857 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
5858 {
5859 enum ieee80211_band band = nla_type(tx_rates);
5860 if (band < 0 || band >= IEEE80211_NUM_BANDS)
5861 return -EINVAL;
5862 sband = rdev->wiphy.bands[band];
5863 if (sband == NULL)
5864 return -EINVAL;
5865 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
5866 nla_len(tx_rates), nl80211_txattr_policy);
5867 if (tb[NL80211_TXRATE_LEGACY]) {
5868 mask.control[band].legacy = rateset_to_mask(
5869 sband,
5870 nla_data(tb[NL80211_TXRATE_LEGACY]),
5871 nla_len(tb[NL80211_TXRATE_LEGACY]));
5872 if ((mask.control[band].legacy == 0) &&
5873 nla_len(tb[NL80211_TXRATE_LEGACY]))
5874 return -EINVAL;
5875 }
5876 if (tb[NL80211_TXRATE_MCS]) {
5877 if (!ht_rateset_to_mask(
5878 sband,
5879 nla_data(tb[NL80211_TXRATE_MCS]),
5880 nla_len(tb[NL80211_TXRATE_MCS]),
5881 mask.control[band].mcs))
5882 return -EINVAL;
5883 }
5884
5885 if (mask.control[band].legacy == 0) {
5886 /* don't allow empty legacy rates if HT
5887 * is not even supported. */
5888 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
5889 return -EINVAL;
5890
5891 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5892 if (mask.control[band].mcs[i])
5893 break;
5894
5895 /* legacy and mcs rates may not be both empty */
5896 if (i == IEEE80211_HT_MCS_MASK_LEN)
5897 return -EINVAL;
5898 }
5899 }
5900
5901 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
5902 }
5903
5904 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
5905 {
5906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5907 struct net_device *dev = info->user_ptr[1];
5908 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
5909
5910 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
5911 return -EINVAL;
5912
5913 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
5914 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
5915
5916 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5917 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5918 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5919 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5920 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5921 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5923 return -EOPNOTSUPP;
5924
5925 /* not much point in registering if we can't reply */
5926 if (!rdev->ops->mgmt_tx)
5927 return -EOPNOTSUPP;
5928
5929 return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
5930 frame_type,
5931 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
5932 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
5933 }
5934
5935 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
5936 {
5937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5938 struct net_device *dev = info->user_ptr[1];
5939 struct ieee80211_channel *chan;
5940 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5941 bool channel_type_valid = false;
5942 u32 freq;
5943 int err;
5944 void *hdr = NULL;
5945 u64 cookie;
5946 struct sk_buff *msg = NULL;
5947 unsigned int wait = 0;
5948 bool offchan, no_cck, dont_wait_for_ack;
5949
5950 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
5951
5952 if (!info->attrs[NL80211_ATTR_FRAME] ||
5953 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5954 return -EINVAL;
5955
5956 if (!rdev->ops->mgmt_tx)
5957 return -EOPNOTSUPP;
5958
5959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
5961 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
5962 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5963 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5964 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5965 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5966 return -EOPNOTSUPP;
5967
5968 if (info->attrs[NL80211_ATTR_DURATION]) {
5969 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5970 return -EINVAL;
5971 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5972
5973 /*
5974 * We should wait on the channel for at least a minimum amount
5975 * of time (10ms) but no longer than the driver supports.
5976 */
5977 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5978 wait > rdev->wiphy.max_remain_on_channel_duration)
5979 return -EINVAL;
5980
5981 }
5982
5983 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5984 if (!nl80211_valid_channel_type(info, &channel_type))
5985 return -EINVAL;
5986 channel_type_valid = true;
5987 }
5988
5989 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
5990
5991 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
5992 return -EINVAL;
5993
5994 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5995
5996 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5997 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5998 if (chan == NULL)
5999 return -EINVAL;
6000
6001 if (!dont_wait_for_ack) {
6002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6003 if (!msg)
6004 return -ENOMEM;
6005
6006 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6007 NL80211_CMD_FRAME);
6008
6009 if (IS_ERR(hdr)) {
6010 err = PTR_ERR(hdr);
6011 goto free_msg;
6012 }
6013 }
6014
6015 err = cfg80211_mlme_mgmt_tx(rdev, dev, chan, offchan, channel_type,
6016 channel_type_valid, wait,
6017 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6018 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6019 no_cck, dont_wait_for_ack, &cookie);
6020 if (err)
6021 goto free_msg;
6022
6023 if (msg) {
6024 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6025 goto nla_put_failure;
6026
6027 genlmsg_end(msg, hdr);
6028 return genlmsg_reply(msg, info);
6029 }
6030
6031 return 0;
6032
6033 nla_put_failure:
6034 err = -ENOBUFS;
6035 free_msg:
6036 nlmsg_free(msg);
6037 return err;
6038 }
6039
6040 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6041 {
6042 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6043 struct net_device *dev = info->user_ptr[1];
6044 u64 cookie;
6045
6046 if (!info->attrs[NL80211_ATTR_COOKIE])
6047 return -EINVAL;
6048
6049 if (!rdev->ops->mgmt_tx_cancel_wait)
6050 return -EOPNOTSUPP;
6051
6052 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6053 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6054 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
6055 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6056 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6057 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6058 return -EOPNOTSUPP;
6059
6060 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6061
6062 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, dev, cookie);
6063 }
6064
6065 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6066 {
6067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068 struct wireless_dev *wdev;
6069 struct net_device *dev = info->user_ptr[1];
6070 u8 ps_state;
6071 bool state;
6072 int err;
6073
6074 if (!info->attrs[NL80211_ATTR_PS_STATE])
6075 return -EINVAL;
6076
6077 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6078
6079 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6080 return -EINVAL;
6081
6082 wdev = dev->ieee80211_ptr;
6083
6084 if (!rdev->ops->set_power_mgmt)
6085 return -EOPNOTSUPP;
6086
6087 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6088
6089 if (state == wdev->ps)
6090 return 0;
6091
6092 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6093 wdev->ps_timeout);
6094 if (!err)
6095 wdev->ps = state;
6096 return err;
6097 }
6098
6099 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6100 {
6101 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6102 enum nl80211_ps_state ps_state;
6103 struct wireless_dev *wdev;
6104 struct net_device *dev = info->user_ptr[1];
6105 struct sk_buff *msg;
6106 void *hdr;
6107 int err;
6108
6109 wdev = dev->ieee80211_ptr;
6110
6111 if (!rdev->ops->set_power_mgmt)
6112 return -EOPNOTSUPP;
6113
6114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6115 if (!msg)
6116 return -ENOMEM;
6117
6118 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6119 NL80211_CMD_GET_POWER_SAVE);
6120 if (!hdr) {
6121 err = -ENOBUFS;
6122 goto free_msg;
6123 }
6124
6125 if (wdev->ps)
6126 ps_state = NL80211_PS_ENABLED;
6127 else
6128 ps_state = NL80211_PS_DISABLED;
6129
6130 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6131 goto nla_put_failure;
6132
6133 genlmsg_end(msg, hdr);
6134 return genlmsg_reply(msg, info);
6135
6136 nla_put_failure:
6137 err = -ENOBUFS;
6138 free_msg:
6139 nlmsg_free(msg);
6140 return err;
6141 }
6142
6143 static struct nla_policy
6144 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6145 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6146 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6147 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6148 };
6149
6150 static int nl80211_set_cqm_rssi(struct genl_info *info,
6151 s32 threshold, u32 hysteresis)
6152 {
6153 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6154 struct wireless_dev *wdev;
6155 struct net_device *dev = info->user_ptr[1];
6156
6157 if (threshold > 0)
6158 return -EINVAL;
6159
6160 wdev = dev->ieee80211_ptr;
6161
6162 if (!rdev->ops->set_cqm_rssi_config)
6163 return -EOPNOTSUPP;
6164
6165 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6166 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6167 return -EOPNOTSUPP;
6168
6169 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6170 threshold, hysteresis);
6171 }
6172
6173 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6174 {
6175 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6176 struct nlattr *cqm;
6177 int err;
6178
6179 cqm = info->attrs[NL80211_ATTR_CQM];
6180 if (!cqm) {
6181 err = -EINVAL;
6182 goto out;
6183 }
6184
6185 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6186 nl80211_attr_cqm_policy);
6187 if (err)
6188 goto out;
6189
6190 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6191 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6192 s32 threshold;
6193 u32 hysteresis;
6194 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6195 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6196 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6197 } else
6198 err = -EINVAL;
6199
6200 out:
6201 return err;
6202 }
6203
6204 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6205 {
6206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6207 struct net_device *dev = info->user_ptr[1];
6208 struct mesh_config cfg;
6209 struct mesh_setup setup;
6210 int err;
6211
6212 /* start with default */
6213 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6214 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6215
6216 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6217 /* and parse parameters if given */
6218 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6219 if (err)
6220 return err;
6221 }
6222
6223 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6224 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6225 return -EINVAL;
6226
6227 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6228 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6229
6230 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6231 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6232 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6233 return -EINVAL;
6234
6235 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6236 /* parse additional setup parameters if given */
6237 err = nl80211_parse_mesh_setup(info, &setup);
6238 if (err)
6239 return err;
6240 }
6241
6242 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6243 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6244
6245 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6246 !nl80211_valid_channel_type(info, &channel_type))
6247 return -EINVAL;
6248
6249 setup.channel = rdev_freq_to_chan(rdev,
6250 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6251 channel_type);
6252 if (!setup.channel)
6253 return -EINVAL;
6254 setup.channel_type = channel_type;
6255 } else {
6256 /* cfg80211_join_mesh() will sort it out */
6257 setup.channel = NULL;
6258 }
6259
6260 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6261 }
6262
6263 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6264 {
6265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6266 struct net_device *dev = info->user_ptr[1];
6267
6268 return cfg80211_leave_mesh(rdev, dev);
6269 }
6270
6271 #ifdef CONFIG_PM
6272 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6273 {
6274 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6275 struct sk_buff *msg;
6276 void *hdr;
6277
6278 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6279 return -EOPNOTSUPP;
6280
6281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6282 if (!msg)
6283 return -ENOMEM;
6284
6285 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6286 NL80211_CMD_GET_WOWLAN);
6287 if (!hdr)
6288 goto nla_put_failure;
6289
6290 if (rdev->wowlan) {
6291 struct nlattr *nl_wowlan;
6292
6293 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6294 if (!nl_wowlan)
6295 goto nla_put_failure;
6296
6297 if ((rdev->wowlan->any &&
6298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6299 (rdev->wowlan->disconnect &&
6300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6301 (rdev->wowlan->magic_pkt &&
6302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6303 (rdev->wowlan->gtk_rekey_failure &&
6304 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6305 (rdev->wowlan->eap_identity_req &&
6306 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6307 (rdev->wowlan->four_way_handshake &&
6308 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6309 (rdev->wowlan->rfkill_release &&
6310 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6311 goto nla_put_failure;
6312 if (rdev->wowlan->n_patterns) {
6313 struct nlattr *nl_pats, *nl_pat;
6314 int i, pat_len;
6315
6316 nl_pats = nla_nest_start(msg,
6317 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6318 if (!nl_pats)
6319 goto nla_put_failure;
6320
6321 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6322 nl_pat = nla_nest_start(msg, i + 1);
6323 if (!nl_pat)
6324 goto nla_put_failure;
6325 pat_len = rdev->wowlan->patterns[i].pattern_len;
6326 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6327 DIV_ROUND_UP(pat_len, 8),
6328 rdev->wowlan->patterns[i].mask) ||
6329 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6330 pat_len,
6331 rdev->wowlan->patterns[i].pattern))
6332 goto nla_put_failure;
6333 nla_nest_end(msg, nl_pat);
6334 }
6335 nla_nest_end(msg, nl_pats);
6336 }
6337
6338 nla_nest_end(msg, nl_wowlan);
6339 }
6340
6341 genlmsg_end(msg, hdr);
6342 return genlmsg_reply(msg, info);
6343
6344 nla_put_failure:
6345 nlmsg_free(msg);
6346 return -ENOBUFS;
6347 }
6348
6349 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6350 {
6351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6352 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6353 struct cfg80211_wowlan no_triggers = {};
6354 struct cfg80211_wowlan new_triggers = {};
6355 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6356 int err, i;
6357 bool prev_enabled = rdev->wowlan;
6358
6359 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6360 return -EOPNOTSUPP;
6361
6362 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS])
6363 goto no_triggers;
6364
6365 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6366 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6367 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6368 nl80211_wowlan_policy);
6369 if (err)
6370 return err;
6371
6372 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6373 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6374 return -EINVAL;
6375 new_triggers.any = true;
6376 }
6377
6378 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6379 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6380 return -EINVAL;
6381 new_triggers.disconnect = true;
6382 }
6383
6384 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6385 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6386 return -EINVAL;
6387 new_triggers.magic_pkt = true;
6388 }
6389
6390 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6391 return -EINVAL;
6392
6393 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6394 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6395 return -EINVAL;
6396 new_triggers.gtk_rekey_failure = true;
6397 }
6398
6399 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6400 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6401 return -EINVAL;
6402 new_triggers.eap_identity_req = true;
6403 }
6404
6405 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6406 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6407 return -EINVAL;
6408 new_triggers.four_way_handshake = true;
6409 }
6410
6411 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6412 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6413 return -EINVAL;
6414 new_triggers.rfkill_release = true;
6415 }
6416
6417 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6418 struct nlattr *pat;
6419 int n_patterns = 0;
6420 int rem, pat_len, mask_len;
6421 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6422
6423 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6424 rem)
6425 n_patterns++;
6426 if (n_patterns > wowlan->n_patterns)
6427 return -EINVAL;
6428
6429 new_triggers.patterns = kcalloc(n_patterns,
6430 sizeof(new_triggers.patterns[0]),
6431 GFP_KERNEL);
6432 if (!new_triggers.patterns)
6433 return -ENOMEM;
6434
6435 new_triggers.n_patterns = n_patterns;
6436 i = 0;
6437
6438 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6439 rem) {
6440 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6441 nla_data(pat), nla_len(pat), NULL);
6442 err = -EINVAL;
6443 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6444 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6445 goto error;
6446 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6447 mask_len = DIV_ROUND_UP(pat_len, 8);
6448 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6449 mask_len)
6450 goto error;
6451 if (pat_len > wowlan->pattern_max_len ||
6452 pat_len < wowlan->pattern_min_len)
6453 goto error;
6454
6455 new_triggers.patterns[i].mask =
6456 kmalloc(mask_len + pat_len, GFP_KERNEL);
6457 if (!new_triggers.patterns[i].mask) {
6458 err = -ENOMEM;
6459 goto error;
6460 }
6461 new_triggers.patterns[i].pattern =
6462 new_triggers.patterns[i].mask + mask_len;
6463 memcpy(new_triggers.patterns[i].mask,
6464 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6465 mask_len);
6466 new_triggers.patterns[i].pattern_len = pat_len;
6467 memcpy(new_triggers.patterns[i].pattern,
6468 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6469 pat_len);
6470 i++;
6471 }
6472 }
6473
6474 if (memcmp(&new_triggers, &no_triggers, sizeof(new_triggers))) {
6475 struct cfg80211_wowlan *ntrig;
6476 ntrig = kmemdup(&new_triggers, sizeof(new_triggers),
6477 GFP_KERNEL);
6478 if (!ntrig) {
6479 err = -ENOMEM;
6480 goto error;
6481 }
6482 cfg80211_rdev_free_wowlan(rdev);
6483 rdev->wowlan = ntrig;
6484 } else {
6485 no_triggers:
6486 cfg80211_rdev_free_wowlan(rdev);
6487 rdev->wowlan = NULL;
6488 }
6489
6490 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6491 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6492
6493 return 0;
6494 error:
6495 for (i = 0; i < new_triggers.n_patterns; i++)
6496 kfree(new_triggers.patterns[i].mask);
6497 kfree(new_triggers.patterns);
6498 return err;
6499 }
6500 #endif
6501
6502 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6503 {
6504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6505 struct net_device *dev = info->user_ptr[1];
6506 struct wireless_dev *wdev = dev->ieee80211_ptr;
6507 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6508 struct cfg80211_gtk_rekey_data rekey_data;
6509 int err;
6510
6511 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6512 return -EINVAL;
6513
6514 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6515 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6516 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6517 nl80211_rekey_policy);
6518 if (err)
6519 return err;
6520
6521 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6522 return -ERANGE;
6523 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6524 return -ERANGE;
6525 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6526 return -ERANGE;
6527
6528 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6529 NL80211_KEK_LEN);
6530 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6531 NL80211_KCK_LEN);
6532 memcpy(rekey_data.replay_ctr,
6533 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6534 NL80211_REPLAY_CTR_LEN);
6535
6536 wdev_lock(wdev);
6537 if (!wdev->current_bss) {
6538 err = -ENOTCONN;
6539 goto out;
6540 }
6541
6542 if (!rdev->ops->set_rekey_data) {
6543 err = -EOPNOTSUPP;
6544 goto out;
6545 }
6546
6547 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6548 out:
6549 wdev_unlock(wdev);
6550 return err;
6551 }
6552
6553 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6554 struct genl_info *info)
6555 {
6556 struct net_device *dev = info->user_ptr[1];
6557 struct wireless_dev *wdev = dev->ieee80211_ptr;
6558
6559 if (wdev->iftype != NL80211_IFTYPE_AP &&
6560 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6561 return -EINVAL;
6562
6563 if (wdev->ap_unexpected_nlpid)
6564 return -EBUSY;
6565
6566 wdev->ap_unexpected_nlpid = info->snd_pid;
6567 return 0;
6568 }
6569
6570 static int nl80211_probe_client(struct sk_buff *skb,
6571 struct genl_info *info)
6572 {
6573 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6574 struct net_device *dev = info->user_ptr[1];
6575 struct wireless_dev *wdev = dev->ieee80211_ptr;
6576 struct sk_buff *msg;
6577 void *hdr;
6578 const u8 *addr;
6579 u64 cookie;
6580 int err;
6581
6582 if (wdev->iftype != NL80211_IFTYPE_AP &&
6583 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6584 return -EOPNOTSUPP;
6585
6586 if (!info->attrs[NL80211_ATTR_MAC])
6587 return -EINVAL;
6588
6589 if (!rdev->ops->probe_client)
6590 return -EOPNOTSUPP;
6591
6592 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6593 if (!msg)
6594 return -ENOMEM;
6595
6596 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6597 NL80211_CMD_PROBE_CLIENT);
6598
6599 if (IS_ERR(hdr)) {
6600 err = PTR_ERR(hdr);
6601 goto free_msg;
6602 }
6603
6604 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6605
6606 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6607 if (err)
6608 goto free_msg;
6609
6610 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6611 goto nla_put_failure;
6612
6613 genlmsg_end(msg, hdr);
6614
6615 return genlmsg_reply(msg, info);
6616
6617 nla_put_failure:
6618 err = -ENOBUFS;
6619 free_msg:
6620 nlmsg_free(msg);
6621 return err;
6622 }
6623
6624 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6625 {
6626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6627
6628 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6629 return -EOPNOTSUPP;
6630
6631 if (rdev->ap_beacons_nlpid)
6632 return -EBUSY;
6633
6634 rdev->ap_beacons_nlpid = info->snd_pid;
6635
6636 return 0;
6637 }
6638
6639 #define NL80211_FLAG_NEED_WIPHY 0x01
6640 #define NL80211_FLAG_NEED_NETDEV 0x02
6641 #define NL80211_FLAG_NEED_RTNL 0x04
6642 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6643 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6644 NL80211_FLAG_CHECK_NETDEV_UP)
6645
6646 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6647 struct genl_info *info)
6648 {
6649 struct cfg80211_registered_device *rdev;
6650 struct net_device *dev;
6651 int err;
6652 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6653
6654 if (rtnl)
6655 rtnl_lock();
6656
6657 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6658 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6659 if (IS_ERR(rdev)) {
6660 if (rtnl)
6661 rtnl_unlock();
6662 return PTR_ERR(rdev);
6663 }
6664 info->user_ptr[0] = rdev;
6665 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6666 err = get_rdev_dev_by_ifindex(genl_info_net(info), info->attrs,
6667 &rdev, &dev);
6668 if (err) {
6669 if (rtnl)
6670 rtnl_unlock();
6671 return err;
6672 }
6673 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6674 !netif_running(dev)) {
6675 cfg80211_unlock_rdev(rdev);
6676 dev_put(dev);
6677 if (rtnl)
6678 rtnl_unlock();
6679 return -ENETDOWN;
6680 }
6681 info->user_ptr[0] = rdev;
6682 info->user_ptr[1] = dev;
6683 }
6684
6685 return 0;
6686 }
6687
6688 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6689 struct genl_info *info)
6690 {
6691 if (info->user_ptr[0])
6692 cfg80211_unlock_rdev(info->user_ptr[0]);
6693 if (info->user_ptr[1])
6694 dev_put(info->user_ptr[1]);
6695 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
6696 rtnl_unlock();
6697 }
6698
6699 static struct genl_ops nl80211_ops[] = {
6700 {
6701 .cmd = NL80211_CMD_GET_WIPHY,
6702 .doit = nl80211_get_wiphy,
6703 .dumpit = nl80211_dump_wiphy,
6704 .policy = nl80211_policy,
6705 /* can be retrieved by unprivileged users */
6706 .internal_flags = NL80211_FLAG_NEED_WIPHY,
6707 },
6708 {
6709 .cmd = NL80211_CMD_SET_WIPHY,
6710 .doit = nl80211_set_wiphy,
6711 .policy = nl80211_policy,
6712 .flags = GENL_ADMIN_PERM,
6713 .internal_flags = NL80211_FLAG_NEED_RTNL,
6714 },
6715 {
6716 .cmd = NL80211_CMD_GET_INTERFACE,
6717 .doit = nl80211_get_interface,
6718 .dumpit = nl80211_dump_interface,
6719 .policy = nl80211_policy,
6720 /* can be retrieved by unprivileged users */
6721 .internal_flags = NL80211_FLAG_NEED_NETDEV,
6722 },
6723 {
6724 .cmd = NL80211_CMD_SET_INTERFACE,
6725 .doit = nl80211_set_interface,
6726 .policy = nl80211_policy,
6727 .flags = GENL_ADMIN_PERM,
6728 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6729 NL80211_FLAG_NEED_RTNL,
6730 },
6731 {
6732 .cmd = NL80211_CMD_NEW_INTERFACE,
6733 .doit = nl80211_new_interface,
6734 .policy = nl80211_policy,
6735 .flags = GENL_ADMIN_PERM,
6736 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6737 NL80211_FLAG_NEED_RTNL,
6738 },
6739 {
6740 .cmd = NL80211_CMD_DEL_INTERFACE,
6741 .doit = nl80211_del_interface,
6742 .policy = nl80211_policy,
6743 .flags = GENL_ADMIN_PERM,
6744 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6745 NL80211_FLAG_NEED_RTNL,
6746 },
6747 {
6748 .cmd = NL80211_CMD_GET_KEY,
6749 .doit = nl80211_get_key,
6750 .policy = nl80211_policy,
6751 .flags = GENL_ADMIN_PERM,
6752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6753 NL80211_FLAG_NEED_RTNL,
6754 },
6755 {
6756 .cmd = NL80211_CMD_SET_KEY,
6757 .doit = nl80211_set_key,
6758 .policy = nl80211_policy,
6759 .flags = GENL_ADMIN_PERM,
6760 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6761 NL80211_FLAG_NEED_RTNL,
6762 },
6763 {
6764 .cmd = NL80211_CMD_NEW_KEY,
6765 .doit = nl80211_new_key,
6766 .policy = nl80211_policy,
6767 .flags = GENL_ADMIN_PERM,
6768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6769 NL80211_FLAG_NEED_RTNL,
6770 },
6771 {
6772 .cmd = NL80211_CMD_DEL_KEY,
6773 .doit = nl80211_del_key,
6774 .policy = nl80211_policy,
6775 .flags = GENL_ADMIN_PERM,
6776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6777 NL80211_FLAG_NEED_RTNL,
6778 },
6779 {
6780 .cmd = NL80211_CMD_SET_BEACON,
6781 .policy = nl80211_policy,
6782 .flags = GENL_ADMIN_PERM,
6783 .doit = nl80211_set_beacon,
6784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6785 NL80211_FLAG_NEED_RTNL,
6786 },
6787 {
6788 .cmd = NL80211_CMD_START_AP,
6789 .policy = nl80211_policy,
6790 .flags = GENL_ADMIN_PERM,
6791 .doit = nl80211_start_ap,
6792 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6793 NL80211_FLAG_NEED_RTNL,
6794 },
6795 {
6796 .cmd = NL80211_CMD_STOP_AP,
6797 .policy = nl80211_policy,
6798 .flags = GENL_ADMIN_PERM,
6799 .doit = nl80211_stop_ap,
6800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6801 NL80211_FLAG_NEED_RTNL,
6802 },
6803 {
6804 .cmd = NL80211_CMD_GET_STATION,
6805 .doit = nl80211_get_station,
6806 .dumpit = nl80211_dump_station,
6807 .policy = nl80211_policy,
6808 .internal_flags = NL80211_FLAG_NEED_NETDEV |
6809 NL80211_FLAG_NEED_RTNL,
6810 },
6811 {
6812 .cmd = NL80211_CMD_SET_STATION,
6813 .doit = nl80211_set_station,
6814 .policy = nl80211_policy,
6815 .flags = GENL_ADMIN_PERM,
6816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6817 NL80211_FLAG_NEED_RTNL,
6818 },
6819 {
6820 .cmd = NL80211_CMD_NEW_STATION,
6821 .doit = nl80211_new_station,
6822 .policy = nl80211_policy,
6823 .flags = GENL_ADMIN_PERM,
6824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6825 NL80211_FLAG_NEED_RTNL,
6826 },
6827 {
6828 .cmd = NL80211_CMD_DEL_STATION,
6829 .doit = nl80211_del_station,
6830 .policy = nl80211_policy,
6831 .flags = GENL_ADMIN_PERM,
6832 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6833 NL80211_FLAG_NEED_RTNL,
6834 },
6835 {
6836 .cmd = NL80211_CMD_GET_MPATH,
6837 .doit = nl80211_get_mpath,
6838 .dumpit = nl80211_dump_mpath,
6839 .policy = nl80211_policy,
6840 .flags = GENL_ADMIN_PERM,
6841 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6842 NL80211_FLAG_NEED_RTNL,
6843 },
6844 {
6845 .cmd = NL80211_CMD_SET_MPATH,
6846 .doit = nl80211_set_mpath,
6847 .policy = nl80211_policy,
6848 .flags = GENL_ADMIN_PERM,
6849 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6850 NL80211_FLAG_NEED_RTNL,
6851 },
6852 {
6853 .cmd = NL80211_CMD_NEW_MPATH,
6854 .doit = nl80211_new_mpath,
6855 .policy = nl80211_policy,
6856 .flags = GENL_ADMIN_PERM,
6857 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6858 NL80211_FLAG_NEED_RTNL,
6859 },
6860 {
6861 .cmd = NL80211_CMD_DEL_MPATH,
6862 .doit = nl80211_del_mpath,
6863 .policy = nl80211_policy,
6864 .flags = GENL_ADMIN_PERM,
6865 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6866 NL80211_FLAG_NEED_RTNL,
6867 },
6868 {
6869 .cmd = NL80211_CMD_SET_BSS,
6870 .doit = nl80211_set_bss,
6871 .policy = nl80211_policy,
6872 .flags = GENL_ADMIN_PERM,
6873 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6874 NL80211_FLAG_NEED_RTNL,
6875 },
6876 {
6877 .cmd = NL80211_CMD_GET_REG,
6878 .doit = nl80211_get_reg,
6879 .policy = nl80211_policy,
6880 /* can be retrieved by unprivileged users */
6881 },
6882 {
6883 .cmd = NL80211_CMD_SET_REG,
6884 .doit = nl80211_set_reg,
6885 .policy = nl80211_policy,
6886 .flags = GENL_ADMIN_PERM,
6887 },
6888 {
6889 .cmd = NL80211_CMD_REQ_SET_REG,
6890 .doit = nl80211_req_set_reg,
6891 .policy = nl80211_policy,
6892 .flags = GENL_ADMIN_PERM,
6893 },
6894 {
6895 .cmd = NL80211_CMD_GET_MESH_CONFIG,
6896 .doit = nl80211_get_mesh_config,
6897 .policy = nl80211_policy,
6898 /* can be retrieved by unprivileged users */
6899 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6900 NL80211_FLAG_NEED_RTNL,
6901 },
6902 {
6903 .cmd = NL80211_CMD_SET_MESH_CONFIG,
6904 .doit = nl80211_update_mesh_config,
6905 .policy = nl80211_policy,
6906 .flags = GENL_ADMIN_PERM,
6907 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6908 NL80211_FLAG_NEED_RTNL,
6909 },
6910 {
6911 .cmd = NL80211_CMD_TRIGGER_SCAN,
6912 .doit = nl80211_trigger_scan,
6913 .policy = nl80211_policy,
6914 .flags = GENL_ADMIN_PERM,
6915 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6916 NL80211_FLAG_NEED_RTNL,
6917 },
6918 {
6919 .cmd = NL80211_CMD_GET_SCAN,
6920 .policy = nl80211_policy,
6921 .dumpit = nl80211_dump_scan,
6922 },
6923 {
6924 .cmd = NL80211_CMD_START_SCHED_SCAN,
6925 .doit = nl80211_start_sched_scan,
6926 .policy = nl80211_policy,
6927 .flags = GENL_ADMIN_PERM,
6928 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6929 NL80211_FLAG_NEED_RTNL,
6930 },
6931 {
6932 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
6933 .doit = nl80211_stop_sched_scan,
6934 .policy = nl80211_policy,
6935 .flags = GENL_ADMIN_PERM,
6936 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6937 NL80211_FLAG_NEED_RTNL,
6938 },
6939 {
6940 .cmd = NL80211_CMD_AUTHENTICATE,
6941 .doit = nl80211_authenticate,
6942 .policy = nl80211_policy,
6943 .flags = GENL_ADMIN_PERM,
6944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6945 NL80211_FLAG_NEED_RTNL,
6946 },
6947 {
6948 .cmd = NL80211_CMD_ASSOCIATE,
6949 .doit = nl80211_associate,
6950 .policy = nl80211_policy,
6951 .flags = GENL_ADMIN_PERM,
6952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6953 NL80211_FLAG_NEED_RTNL,
6954 },
6955 {
6956 .cmd = NL80211_CMD_DEAUTHENTICATE,
6957 .doit = nl80211_deauthenticate,
6958 .policy = nl80211_policy,
6959 .flags = GENL_ADMIN_PERM,
6960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6961 NL80211_FLAG_NEED_RTNL,
6962 },
6963 {
6964 .cmd = NL80211_CMD_DISASSOCIATE,
6965 .doit = nl80211_disassociate,
6966 .policy = nl80211_policy,
6967 .flags = GENL_ADMIN_PERM,
6968 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6969 NL80211_FLAG_NEED_RTNL,
6970 },
6971 {
6972 .cmd = NL80211_CMD_JOIN_IBSS,
6973 .doit = nl80211_join_ibss,
6974 .policy = nl80211_policy,
6975 .flags = GENL_ADMIN_PERM,
6976 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6977 NL80211_FLAG_NEED_RTNL,
6978 },
6979 {
6980 .cmd = NL80211_CMD_LEAVE_IBSS,
6981 .doit = nl80211_leave_ibss,
6982 .policy = nl80211_policy,
6983 .flags = GENL_ADMIN_PERM,
6984 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
6985 NL80211_FLAG_NEED_RTNL,
6986 },
6987 #ifdef CONFIG_NL80211_TESTMODE
6988 {
6989 .cmd = NL80211_CMD_TESTMODE,
6990 .doit = nl80211_testmode_do,
6991 .dumpit = nl80211_testmode_dump,
6992 .policy = nl80211_policy,
6993 .flags = GENL_ADMIN_PERM,
6994 .internal_flags = NL80211_FLAG_NEED_WIPHY |
6995 NL80211_FLAG_NEED_RTNL,
6996 },
6997 #endif
6998 {
6999 .cmd = NL80211_CMD_CONNECT,
7000 .doit = nl80211_connect,
7001 .policy = nl80211_policy,
7002 .flags = GENL_ADMIN_PERM,
7003 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7004 NL80211_FLAG_NEED_RTNL,
7005 },
7006 {
7007 .cmd = NL80211_CMD_DISCONNECT,
7008 .doit = nl80211_disconnect,
7009 .policy = nl80211_policy,
7010 .flags = GENL_ADMIN_PERM,
7011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7012 NL80211_FLAG_NEED_RTNL,
7013 },
7014 {
7015 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7016 .doit = nl80211_wiphy_netns,
7017 .policy = nl80211_policy,
7018 .flags = GENL_ADMIN_PERM,
7019 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7020 NL80211_FLAG_NEED_RTNL,
7021 },
7022 {
7023 .cmd = NL80211_CMD_GET_SURVEY,
7024 .policy = nl80211_policy,
7025 .dumpit = nl80211_dump_survey,
7026 },
7027 {
7028 .cmd = NL80211_CMD_SET_PMKSA,
7029 .doit = nl80211_setdel_pmksa,
7030 .policy = nl80211_policy,
7031 .flags = GENL_ADMIN_PERM,
7032 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7033 NL80211_FLAG_NEED_RTNL,
7034 },
7035 {
7036 .cmd = NL80211_CMD_DEL_PMKSA,
7037 .doit = nl80211_setdel_pmksa,
7038 .policy = nl80211_policy,
7039 .flags = GENL_ADMIN_PERM,
7040 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7041 NL80211_FLAG_NEED_RTNL,
7042 },
7043 {
7044 .cmd = NL80211_CMD_FLUSH_PMKSA,
7045 .doit = nl80211_flush_pmksa,
7046 .policy = nl80211_policy,
7047 .flags = GENL_ADMIN_PERM,
7048 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7049 NL80211_FLAG_NEED_RTNL,
7050 },
7051 {
7052 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7053 .doit = nl80211_remain_on_channel,
7054 .policy = nl80211_policy,
7055 .flags = GENL_ADMIN_PERM,
7056 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7057 NL80211_FLAG_NEED_RTNL,
7058 },
7059 {
7060 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7061 .doit = nl80211_cancel_remain_on_channel,
7062 .policy = nl80211_policy,
7063 .flags = GENL_ADMIN_PERM,
7064 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7065 NL80211_FLAG_NEED_RTNL,
7066 },
7067 {
7068 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7069 .doit = nl80211_set_tx_bitrate_mask,
7070 .policy = nl80211_policy,
7071 .flags = GENL_ADMIN_PERM,
7072 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7073 NL80211_FLAG_NEED_RTNL,
7074 },
7075 {
7076 .cmd = NL80211_CMD_REGISTER_FRAME,
7077 .doit = nl80211_register_mgmt,
7078 .policy = nl80211_policy,
7079 .flags = GENL_ADMIN_PERM,
7080 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7081 NL80211_FLAG_NEED_RTNL,
7082 },
7083 {
7084 .cmd = NL80211_CMD_FRAME,
7085 .doit = nl80211_tx_mgmt,
7086 .policy = nl80211_policy,
7087 .flags = GENL_ADMIN_PERM,
7088 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7089 NL80211_FLAG_NEED_RTNL,
7090 },
7091 {
7092 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7093 .doit = nl80211_tx_mgmt_cancel_wait,
7094 .policy = nl80211_policy,
7095 .flags = GENL_ADMIN_PERM,
7096 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7097 NL80211_FLAG_NEED_RTNL,
7098 },
7099 {
7100 .cmd = NL80211_CMD_SET_POWER_SAVE,
7101 .doit = nl80211_set_power_save,
7102 .policy = nl80211_policy,
7103 .flags = GENL_ADMIN_PERM,
7104 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7105 NL80211_FLAG_NEED_RTNL,
7106 },
7107 {
7108 .cmd = NL80211_CMD_GET_POWER_SAVE,
7109 .doit = nl80211_get_power_save,
7110 .policy = nl80211_policy,
7111 /* can be retrieved by unprivileged users */
7112 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7113 NL80211_FLAG_NEED_RTNL,
7114 },
7115 {
7116 .cmd = NL80211_CMD_SET_CQM,
7117 .doit = nl80211_set_cqm,
7118 .policy = nl80211_policy,
7119 .flags = GENL_ADMIN_PERM,
7120 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7121 NL80211_FLAG_NEED_RTNL,
7122 },
7123 {
7124 .cmd = NL80211_CMD_SET_CHANNEL,
7125 .doit = nl80211_set_channel,
7126 .policy = nl80211_policy,
7127 .flags = GENL_ADMIN_PERM,
7128 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7129 NL80211_FLAG_NEED_RTNL,
7130 },
7131 {
7132 .cmd = NL80211_CMD_SET_WDS_PEER,
7133 .doit = nl80211_set_wds_peer,
7134 .policy = nl80211_policy,
7135 .flags = GENL_ADMIN_PERM,
7136 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7137 NL80211_FLAG_NEED_RTNL,
7138 },
7139 {
7140 .cmd = NL80211_CMD_JOIN_MESH,
7141 .doit = nl80211_join_mesh,
7142 .policy = nl80211_policy,
7143 .flags = GENL_ADMIN_PERM,
7144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7145 NL80211_FLAG_NEED_RTNL,
7146 },
7147 {
7148 .cmd = NL80211_CMD_LEAVE_MESH,
7149 .doit = nl80211_leave_mesh,
7150 .policy = nl80211_policy,
7151 .flags = GENL_ADMIN_PERM,
7152 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7153 NL80211_FLAG_NEED_RTNL,
7154 },
7155 #ifdef CONFIG_PM
7156 {
7157 .cmd = NL80211_CMD_GET_WOWLAN,
7158 .doit = nl80211_get_wowlan,
7159 .policy = nl80211_policy,
7160 /* can be retrieved by unprivileged users */
7161 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7162 NL80211_FLAG_NEED_RTNL,
7163 },
7164 {
7165 .cmd = NL80211_CMD_SET_WOWLAN,
7166 .doit = nl80211_set_wowlan,
7167 .policy = nl80211_policy,
7168 .flags = GENL_ADMIN_PERM,
7169 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7170 NL80211_FLAG_NEED_RTNL,
7171 },
7172 #endif
7173 {
7174 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7175 .doit = nl80211_set_rekey_data,
7176 .policy = nl80211_policy,
7177 .flags = GENL_ADMIN_PERM,
7178 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7179 NL80211_FLAG_NEED_RTNL,
7180 },
7181 {
7182 .cmd = NL80211_CMD_TDLS_MGMT,
7183 .doit = nl80211_tdls_mgmt,
7184 .policy = nl80211_policy,
7185 .flags = GENL_ADMIN_PERM,
7186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7187 NL80211_FLAG_NEED_RTNL,
7188 },
7189 {
7190 .cmd = NL80211_CMD_TDLS_OPER,
7191 .doit = nl80211_tdls_oper,
7192 .policy = nl80211_policy,
7193 .flags = GENL_ADMIN_PERM,
7194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7195 NL80211_FLAG_NEED_RTNL,
7196 },
7197 {
7198 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7199 .doit = nl80211_register_unexpected_frame,
7200 .policy = nl80211_policy,
7201 .flags = GENL_ADMIN_PERM,
7202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7203 NL80211_FLAG_NEED_RTNL,
7204 },
7205 {
7206 .cmd = NL80211_CMD_PROBE_CLIENT,
7207 .doit = nl80211_probe_client,
7208 .policy = nl80211_policy,
7209 .flags = GENL_ADMIN_PERM,
7210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7211 NL80211_FLAG_NEED_RTNL,
7212 },
7213 {
7214 .cmd = NL80211_CMD_REGISTER_BEACONS,
7215 .doit = nl80211_register_beacons,
7216 .policy = nl80211_policy,
7217 .flags = GENL_ADMIN_PERM,
7218 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7219 NL80211_FLAG_NEED_RTNL,
7220 },
7221 {
7222 .cmd = NL80211_CMD_SET_NOACK_MAP,
7223 .doit = nl80211_set_noack_map,
7224 .policy = nl80211_policy,
7225 .flags = GENL_ADMIN_PERM,
7226 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7227 NL80211_FLAG_NEED_RTNL,
7228 },
7229
7230 };
7231
7232 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7233 .name = "mlme",
7234 };
7235
7236 /* multicast groups */
7237 static struct genl_multicast_group nl80211_config_mcgrp = {
7238 .name = "config",
7239 };
7240 static struct genl_multicast_group nl80211_scan_mcgrp = {
7241 .name = "scan",
7242 };
7243 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7244 .name = "regulatory",
7245 };
7246
7247 /* notification functions */
7248
7249 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7250 {
7251 struct sk_buff *msg;
7252
7253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7254 if (!msg)
7255 return;
7256
7257 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7258 nlmsg_free(msg);
7259 return;
7260 }
7261
7262 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7263 nl80211_config_mcgrp.id, GFP_KERNEL);
7264 }
7265
7266 static int nl80211_add_scan_req(struct sk_buff *msg,
7267 struct cfg80211_registered_device *rdev)
7268 {
7269 struct cfg80211_scan_request *req = rdev->scan_req;
7270 struct nlattr *nest;
7271 int i;
7272
7273 ASSERT_RDEV_LOCK(rdev);
7274
7275 if (WARN_ON(!req))
7276 return 0;
7277
7278 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7279 if (!nest)
7280 goto nla_put_failure;
7281 for (i = 0; i < req->n_ssids; i++) {
7282 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7283 goto nla_put_failure;
7284 }
7285 nla_nest_end(msg, nest);
7286
7287 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7288 if (!nest)
7289 goto nla_put_failure;
7290 for (i = 0; i < req->n_channels; i++) {
7291 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7292 goto nla_put_failure;
7293 }
7294 nla_nest_end(msg, nest);
7295
7296 if (req->ie &&
7297 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7298 goto nla_put_failure;
7299
7300 return 0;
7301 nla_put_failure:
7302 return -ENOBUFS;
7303 }
7304
7305 static int nl80211_send_scan_msg(struct sk_buff *msg,
7306 struct cfg80211_registered_device *rdev,
7307 struct net_device *netdev,
7308 u32 pid, u32 seq, int flags,
7309 u32 cmd)
7310 {
7311 void *hdr;
7312
7313 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7314 if (!hdr)
7315 return -1;
7316
7317 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7318 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7319 goto nla_put_failure;
7320
7321 /* ignore errors and send incomplete event anyway */
7322 nl80211_add_scan_req(msg, rdev);
7323
7324 return genlmsg_end(msg, hdr);
7325
7326 nla_put_failure:
7327 genlmsg_cancel(msg, hdr);
7328 return -EMSGSIZE;
7329 }
7330
7331 static int
7332 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7333 struct cfg80211_registered_device *rdev,
7334 struct net_device *netdev,
7335 u32 pid, u32 seq, int flags, u32 cmd)
7336 {
7337 void *hdr;
7338
7339 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7340 if (!hdr)
7341 return -1;
7342
7343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7344 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7345 goto nla_put_failure;
7346
7347 return genlmsg_end(msg, hdr);
7348
7349 nla_put_failure:
7350 genlmsg_cancel(msg, hdr);
7351 return -EMSGSIZE;
7352 }
7353
7354 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7355 struct net_device *netdev)
7356 {
7357 struct sk_buff *msg;
7358
7359 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7360 if (!msg)
7361 return;
7362
7363 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7364 NL80211_CMD_TRIGGER_SCAN) < 0) {
7365 nlmsg_free(msg);
7366 return;
7367 }
7368
7369 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7370 nl80211_scan_mcgrp.id, GFP_KERNEL);
7371 }
7372
7373 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7374 struct net_device *netdev)
7375 {
7376 struct sk_buff *msg;
7377
7378 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7379 if (!msg)
7380 return;
7381
7382 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7383 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7384 nlmsg_free(msg);
7385 return;
7386 }
7387
7388 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7389 nl80211_scan_mcgrp.id, GFP_KERNEL);
7390 }
7391
7392 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7393 struct net_device *netdev)
7394 {
7395 struct sk_buff *msg;
7396
7397 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7398 if (!msg)
7399 return;
7400
7401 if (nl80211_send_scan_msg(msg, rdev, netdev, 0, 0, 0,
7402 NL80211_CMD_SCAN_ABORTED) < 0) {
7403 nlmsg_free(msg);
7404 return;
7405 }
7406
7407 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7408 nl80211_scan_mcgrp.id, GFP_KERNEL);
7409 }
7410
7411 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7412 struct net_device *netdev)
7413 {
7414 struct sk_buff *msg;
7415
7416 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7417 if (!msg)
7418 return;
7419
7420 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7421 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7422 nlmsg_free(msg);
7423 return;
7424 }
7425
7426 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7427 nl80211_scan_mcgrp.id, GFP_KERNEL);
7428 }
7429
7430 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7431 struct net_device *netdev, u32 cmd)
7432 {
7433 struct sk_buff *msg;
7434
7435 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7436 if (!msg)
7437 return;
7438
7439 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7440 nlmsg_free(msg);
7441 return;
7442 }
7443
7444 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7445 nl80211_scan_mcgrp.id, GFP_KERNEL);
7446 }
7447
7448 /*
7449 * This can happen on global regulatory changes or device specific settings
7450 * based on custom world regulatory domains.
7451 */
7452 void nl80211_send_reg_change_event(struct regulatory_request *request)
7453 {
7454 struct sk_buff *msg;
7455 void *hdr;
7456
7457 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7458 if (!msg)
7459 return;
7460
7461 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7462 if (!hdr) {
7463 nlmsg_free(msg);
7464 return;
7465 }
7466
7467 /* Userspace can always count this one always being set */
7468 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7469 goto nla_put_failure;
7470
7471 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7472 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7473 NL80211_REGDOM_TYPE_WORLD))
7474 goto nla_put_failure;
7475 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7476 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7477 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7478 goto nla_put_failure;
7479 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7480 request->intersect) {
7481 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7482 NL80211_REGDOM_TYPE_INTERSECTION))
7483 goto nla_put_failure;
7484 } else {
7485 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7486 NL80211_REGDOM_TYPE_COUNTRY) ||
7487 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7488 request->alpha2))
7489 goto nla_put_failure;
7490 }
7491
7492 if (wiphy_idx_valid(request->wiphy_idx) &&
7493 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7494 goto nla_put_failure;
7495
7496 genlmsg_end(msg, hdr);
7497
7498 rcu_read_lock();
7499 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7500 GFP_ATOMIC);
7501 rcu_read_unlock();
7502
7503 return;
7504
7505 nla_put_failure:
7506 genlmsg_cancel(msg, hdr);
7507 nlmsg_free(msg);
7508 }
7509
7510 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7511 struct net_device *netdev,
7512 const u8 *buf, size_t len,
7513 enum nl80211_commands cmd, gfp_t gfp)
7514 {
7515 struct sk_buff *msg;
7516 void *hdr;
7517
7518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7519 if (!msg)
7520 return;
7521
7522 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7523 if (!hdr) {
7524 nlmsg_free(msg);
7525 return;
7526 }
7527
7528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7530 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7531 goto nla_put_failure;
7532
7533 genlmsg_end(msg, hdr);
7534
7535 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7536 nl80211_mlme_mcgrp.id, gfp);
7537 return;
7538
7539 nla_put_failure:
7540 genlmsg_cancel(msg, hdr);
7541 nlmsg_free(msg);
7542 }
7543
7544 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7545 struct net_device *netdev, const u8 *buf,
7546 size_t len, gfp_t gfp)
7547 {
7548 nl80211_send_mlme_event(rdev, netdev, buf, len,
7549 NL80211_CMD_AUTHENTICATE, gfp);
7550 }
7551
7552 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7553 struct net_device *netdev, const u8 *buf,
7554 size_t len, gfp_t gfp)
7555 {
7556 nl80211_send_mlme_event(rdev, netdev, buf, len,
7557 NL80211_CMD_ASSOCIATE, gfp);
7558 }
7559
7560 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7561 struct net_device *netdev, const u8 *buf,
7562 size_t len, gfp_t gfp)
7563 {
7564 nl80211_send_mlme_event(rdev, netdev, buf, len,
7565 NL80211_CMD_DEAUTHENTICATE, gfp);
7566 }
7567
7568 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7569 struct net_device *netdev, const u8 *buf,
7570 size_t len, gfp_t gfp)
7571 {
7572 nl80211_send_mlme_event(rdev, netdev, buf, len,
7573 NL80211_CMD_DISASSOCIATE, gfp);
7574 }
7575
7576 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7577 struct net_device *netdev, const u8 *buf,
7578 size_t len, gfp_t gfp)
7579 {
7580 nl80211_send_mlme_event(rdev, netdev, buf, len,
7581 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7582 }
7583
7584 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7585 struct net_device *netdev, const u8 *buf,
7586 size_t len, gfp_t gfp)
7587 {
7588 nl80211_send_mlme_event(rdev, netdev, buf, len,
7589 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7590 }
7591
7592 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7593 struct net_device *netdev, int cmd,
7594 const u8 *addr, gfp_t gfp)
7595 {
7596 struct sk_buff *msg;
7597 void *hdr;
7598
7599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7600 if (!msg)
7601 return;
7602
7603 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7604 if (!hdr) {
7605 nlmsg_free(msg);
7606 return;
7607 }
7608
7609 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7610 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7611 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
7612 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
7613 goto nla_put_failure;
7614
7615 genlmsg_end(msg, hdr);
7616
7617 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7618 nl80211_mlme_mcgrp.id, gfp);
7619 return;
7620
7621 nla_put_failure:
7622 genlmsg_cancel(msg, hdr);
7623 nlmsg_free(msg);
7624 }
7625
7626 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7627 struct net_device *netdev, const u8 *addr,
7628 gfp_t gfp)
7629 {
7630 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7631 addr, gfp);
7632 }
7633
7634 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7635 struct net_device *netdev, const u8 *addr,
7636 gfp_t gfp)
7637 {
7638 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7639 addr, gfp);
7640 }
7641
7642 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7643 struct net_device *netdev, const u8 *bssid,
7644 const u8 *req_ie, size_t req_ie_len,
7645 const u8 *resp_ie, size_t resp_ie_len,
7646 u16 status, gfp_t gfp)
7647 {
7648 struct sk_buff *msg;
7649 void *hdr;
7650
7651 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7652 if (!msg)
7653 return;
7654
7655 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7656 if (!hdr) {
7657 nlmsg_free(msg);
7658 return;
7659 }
7660
7661 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7662 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7663 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
7664 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
7665 (req_ie &&
7666 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7667 (resp_ie &&
7668 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7669 goto nla_put_failure;
7670
7671 genlmsg_end(msg, hdr);
7672
7673 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7674 nl80211_mlme_mcgrp.id, gfp);
7675 return;
7676
7677 nla_put_failure:
7678 genlmsg_cancel(msg, hdr);
7679 nlmsg_free(msg);
7680
7681 }
7682
7683 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
7684 struct net_device *netdev, const u8 *bssid,
7685 const u8 *req_ie, size_t req_ie_len,
7686 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
7687 {
7688 struct sk_buff *msg;
7689 void *hdr;
7690
7691 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7692 if (!msg)
7693 return;
7694
7695 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
7696 if (!hdr) {
7697 nlmsg_free(msg);
7698 return;
7699 }
7700
7701 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7702 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7703 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
7704 (req_ie &&
7705 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7706 (resp_ie &&
7707 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7708 goto nla_put_failure;
7709
7710 genlmsg_end(msg, hdr);
7711
7712 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7713 nl80211_mlme_mcgrp.id, gfp);
7714 return;
7715
7716 nla_put_failure:
7717 genlmsg_cancel(msg, hdr);
7718 nlmsg_free(msg);
7719
7720 }
7721
7722 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
7723 struct net_device *netdev, u16 reason,
7724 const u8 *ie, size_t ie_len, bool from_ap)
7725 {
7726 struct sk_buff *msg;
7727 void *hdr;
7728
7729 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
7730 if (!msg)
7731 return;
7732
7733 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
7734 if (!hdr) {
7735 nlmsg_free(msg);
7736 return;
7737 }
7738
7739 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7740 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7741 (from_ap && reason &&
7742 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
7743 (from_ap &&
7744 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
7745 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
7746 goto nla_put_failure;
7747
7748 genlmsg_end(msg, hdr);
7749
7750 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7751 nl80211_mlme_mcgrp.id, GFP_KERNEL);
7752 return;
7753
7754 nla_put_failure:
7755 genlmsg_cancel(msg, hdr);
7756 nlmsg_free(msg);
7757
7758 }
7759
7760 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
7761 struct net_device *netdev, const u8 *bssid,
7762 gfp_t gfp)
7763 {
7764 struct sk_buff *msg;
7765 void *hdr;
7766
7767 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7768 if (!msg)
7769 return;
7770
7771 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
7772 if (!hdr) {
7773 nlmsg_free(msg);
7774 return;
7775 }
7776
7777 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7778 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7779 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
7780 goto nla_put_failure;
7781
7782 genlmsg_end(msg, hdr);
7783
7784 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7785 nl80211_mlme_mcgrp.id, gfp);
7786 return;
7787
7788 nla_put_failure:
7789 genlmsg_cancel(msg, hdr);
7790 nlmsg_free(msg);
7791 }
7792
7793 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
7794 struct net_device *netdev,
7795 const u8 *macaddr, const u8* ie, u8 ie_len,
7796 gfp_t gfp)
7797 {
7798 struct sk_buff *msg;
7799 void *hdr;
7800
7801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7802 if (!msg)
7803 return;
7804
7805 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
7806 if (!hdr) {
7807 nlmsg_free(msg);
7808 return;
7809 }
7810
7811 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7812 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7813 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
7814 (ie_len && ie &&
7815 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
7816 goto nla_put_failure;
7817
7818 genlmsg_end(msg, hdr);
7819
7820 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7821 nl80211_mlme_mcgrp.id, gfp);
7822 return;
7823
7824 nla_put_failure:
7825 genlmsg_cancel(msg, hdr);
7826 nlmsg_free(msg);
7827 }
7828
7829 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
7830 struct net_device *netdev, const u8 *addr,
7831 enum nl80211_key_type key_type, int key_id,
7832 const u8 *tsc, gfp_t gfp)
7833 {
7834 struct sk_buff *msg;
7835 void *hdr;
7836
7837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7838 if (!msg)
7839 return;
7840
7841 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
7842 if (!hdr) {
7843 nlmsg_free(msg);
7844 return;
7845 }
7846
7847 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7848 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7849 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
7850 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
7851 (key_id != -1 &&
7852 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
7853 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
7854 goto nla_put_failure;
7855
7856 genlmsg_end(msg, hdr);
7857
7858 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7859 nl80211_mlme_mcgrp.id, gfp);
7860 return;
7861
7862 nla_put_failure:
7863 genlmsg_cancel(msg, hdr);
7864 nlmsg_free(msg);
7865 }
7866
7867 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
7868 struct ieee80211_channel *channel_before,
7869 struct ieee80211_channel *channel_after)
7870 {
7871 struct sk_buff *msg;
7872 void *hdr;
7873 struct nlattr *nl_freq;
7874
7875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
7876 if (!msg)
7877 return;
7878
7879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
7880 if (!hdr) {
7881 nlmsg_free(msg);
7882 return;
7883 }
7884
7885 /*
7886 * Since we are applying the beacon hint to a wiphy we know its
7887 * wiphy_idx is valid
7888 */
7889 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7890 goto nla_put_failure;
7891
7892 /* Before */
7893 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
7894 if (!nl_freq)
7895 goto nla_put_failure;
7896 if (nl80211_msg_put_channel(msg, channel_before))
7897 goto nla_put_failure;
7898 nla_nest_end(msg, nl_freq);
7899
7900 /* After */
7901 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
7902 if (!nl_freq)
7903 goto nla_put_failure;
7904 if (nl80211_msg_put_channel(msg, channel_after))
7905 goto nla_put_failure;
7906 nla_nest_end(msg, nl_freq);
7907
7908 genlmsg_end(msg, hdr);
7909
7910 rcu_read_lock();
7911 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7912 GFP_ATOMIC);
7913 rcu_read_unlock();
7914
7915 return;
7916
7917 nla_put_failure:
7918 genlmsg_cancel(msg, hdr);
7919 nlmsg_free(msg);
7920 }
7921
7922 static void nl80211_send_remain_on_chan_event(
7923 int cmd, struct cfg80211_registered_device *rdev,
7924 struct net_device *netdev, u64 cookie,
7925 struct ieee80211_channel *chan,
7926 enum nl80211_channel_type channel_type,
7927 unsigned int duration, gfp_t gfp)
7928 {
7929 struct sk_buff *msg;
7930 void *hdr;
7931
7932 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7933 if (!msg)
7934 return;
7935
7936 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7937 if (!hdr) {
7938 nlmsg_free(msg);
7939 return;
7940 }
7941
7942 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7943 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7944 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
7945 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
7946 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7947 goto nla_put_failure;
7948
7949 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
7950 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
7951 goto nla_put_failure;
7952
7953 genlmsg_end(msg, hdr);
7954
7955 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7956 nl80211_mlme_mcgrp.id, gfp);
7957 return;
7958
7959 nla_put_failure:
7960 genlmsg_cancel(msg, hdr);
7961 nlmsg_free(msg);
7962 }
7963
7964 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
7965 struct net_device *netdev, u64 cookie,
7966 struct ieee80211_channel *chan,
7967 enum nl80211_channel_type channel_type,
7968 unsigned int duration, gfp_t gfp)
7969 {
7970 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
7971 rdev, netdev, cookie, chan,
7972 channel_type, duration, gfp);
7973 }
7974
7975 void nl80211_send_remain_on_channel_cancel(
7976 struct cfg80211_registered_device *rdev, struct net_device *netdev,
7977 u64 cookie, struct ieee80211_channel *chan,
7978 enum nl80211_channel_type channel_type, gfp_t gfp)
7979 {
7980 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7981 rdev, netdev, cookie, chan,
7982 channel_type, 0, gfp);
7983 }
7984
7985 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
7986 struct net_device *dev, const u8 *mac_addr,
7987 struct station_info *sinfo, gfp_t gfp)
7988 {
7989 struct sk_buff *msg;
7990
7991 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
7992 if (!msg)
7993 return;
7994
7995 if (nl80211_send_station(msg, 0, 0, 0,
7996 rdev, dev, mac_addr, sinfo) < 0) {
7997 nlmsg_free(msg);
7998 return;
7999 }
8000
8001 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8002 nl80211_mlme_mcgrp.id, gfp);
8003 }
8004
8005 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8006 struct net_device *dev, const u8 *mac_addr,
8007 gfp_t gfp)
8008 {
8009 struct sk_buff *msg;
8010 void *hdr;
8011
8012 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8013 if (!msg)
8014 return;
8015
8016 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8017 if (!hdr) {
8018 nlmsg_free(msg);
8019 return;
8020 }
8021
8022 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8023 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8024 goto nla_put_failure;
8025
8026 genlmsg_end(msg, hdr);
8027
8028 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8029 nl80211_mlme_mcgrp.id, gfp);
8030 return;
8031
8032 nla_put_failure:
8033 genlmsg_cancel(msg, hdr);
8034 nlmsg_free(msg);
8035 }
8036
8037 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8038 const u8 *addr, gfp_t gfp)
8039 {
8040 struct wireless_dev *wdev = dev->ieee80211_ptr;
8041 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8042 struct sk_buff *msg;
8043 void *hdr;
8044 int err;
8045 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
8046
8047 if (!nlpid)
8048 return false;
8049
8050 msg = nlmsg_new(100, gfp);
8051 if (!msg)
8052 return true;
8053
8054 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8055 if (!hdr) {
8056 nlmsg_free(msg);
8057 return true;
8058 }
8059
8060 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8061 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8062 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8063 goto nla_put_failure;
8064
8065 err = genlmsg_end(msg, hdr);
8066 if (err < 0) {
8067 nlmsg_free(msg);
8068 return true;
8069 }
8070
8071 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8072 return true;
8073
8074 nla_put_failure:
8075 genlmsg_cancel(msg, hdr);
8076 nlmsg_free(msg);
8077 return true;
8078 }
8079
8080 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8081 {
8082 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8083 addr, gfp);
8084 }
8085
8086 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8087 const u8 *addr, gfp_t gfp)
8088 {
8089 return __nl80211_unexpected_frame(dev,
8090 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8091 addr, gfp);
8092 }
8093
8094 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8095 struct net_device *netdev, u32 nlpid,
8096 int freq, int sig_dbm,
8097 const u8 *buf, size_t len, gfp_t gfp)
8098 {
8099 struct sk_buff *msg;
8100 void *hdr;
8101
8102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8103 if (!msg)
8104 return -ENOMEM;
8105
8106 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8107 if (!hdr) {
8108 nlmsg_free(msg);
8109 return -ENOMEM;
8110 }
8111
8112 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8113 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8114 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8115 (sig_dbm &&
8116 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8117 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8118 goto nla_put_failure;
8119
8120 genlmsg_end(msg, hdr);
8121
8122 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8123
8124 nla_put_failure:
8125 genlmsg_cancel(msg, hdr);
8126 nlmsg_free(msg);
8127 return -ENOBUFS;
8128 }
8129
8130 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8131 struct net_device *netdev, u64 cookie,
8132 const u8 *buf, size_t len, bool ack,
8133 gfp_t gfp)
8134 {
8135 struct sk_buff *msg;
8136 void *hdr;
8137
8138 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8139 if (!msg)
8140 return;
8141
8142 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8143 if (!hdr) {
8144 nlmsg_free(msg);
8145 return;
8146 }
8147
8148 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8149 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8150 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8151 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8152 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8153 goto nla_put_failure;
8154
8155 genlmsg_end(msg, hdr);
8156
8157 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8158 return;
8159
8160 nla_put_failure:
8161 genlmsg_cancel(msg, hdr);
8162 nlmsg_free(msg);
8163 }
8164
8165 void
8166 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8167 struct net_device *netdev,
8168 enum nl80211_cqm_rssi_threshold_event rssi_event,
8169 gfp_t gfp)
8170 {
8171 struct sk_buff *msg;
8172 struct nlattr *pinfoattr;
8173 void *hdr;
8174
8175 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8176 if (!msg)
8177 return;
8178
8179 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8180 if (!hdr) {
8181 nlmsg_free(msg);
8182 return;
8183 }
8184
8185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8186 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8187 goto nla_put_failure;
8188
8189 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8190 if (!pinfoattr)
8191 goto nla_put_failure;
8192
8193 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8194 rssi_event))
8195 goto nla_put_failure;
8196
8197 nla_nest_end(msg, pinfoattr);
8198
8199 genlmsg_end(msg, hdr);
8200
8201 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8202 nl80211_mlme_mcgrp.id, gfp);
8203 return;
8204
8205 nla_put_failure:
8206 genlmsg_cancel(msg, hdr);
8207 nlmsg_free(msg);
8208 }
8209
8210 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8211 struct net_device *netdev, const u8 *bssid,
8212 const u8 *replay_ctr, gfp_t gfp)
8213 {
8214 struct sk_buff *msg;
8215 struct nlattr *rekey_attr;
8216 void *hdr;
8217
8218 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8219 if (!msg)
8220 return;
8221
8222 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8223 if (!hdr) {
8224 nlmsg_free(msg);
8225 return;
8226 }
8227
8228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8229 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8230 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8231 goto nla_put_failure;
8232
8233 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8234 if (!rekey_attr)
8235 goto nla_put_failure;
8236
8237 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8238 NL80211_REPLAY_CTR_LEN, replay_ctr))
8239 goto nla_put_failure;
8240
8241 nla_nest_end(msg, rekey_attr);
8242
8243 genlmsg_end(msg, hdr);
8244
8245 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8246 nl80211_mlme_mcgrp.id, gfp);
8247 return;
8248
8249 nla_put_failure:
8250 genlmsg_cancel(msg, hdr);
8251 nlmsg_free(msg);
8252 }
8253
8254 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8255 struct net_device *netdev, int index,
8256 const u8 *bssid, bool preauth, gfp_t gfp)
8257 {
8258 struct sk_buff *msg;
8259 struct nlattr *attr;
8260 void *hdr;
8261
8262 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8263 if (!msg)
8264 return;
8265
8266 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8267 if (!hdr) {
8268 nlmsg_free(msg);
8269 return;
8270 }
8271
8272 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8273 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8274 goto nla_put_failure;
8275
8276 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8277 if (!attr)
8278 goto nla_put_failure;
8279
8280 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8281 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8282 (preauth &&
8283 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8284 goto nla_put_failure;
8285
8286 nla_nest_end(msg, attr);
8287
8288 genlmsg_end(msg, hdr);
8289
8290 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8291 nl80211_mlme_mcgrp.id, gfp);
8292 return;
8293
8294 nla_put_failure:
8295 genlmsg_cancel(msg, hdr);
8296 nlmsg_free(msg);
8297 }
8298
8299 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8300 struct net_device *netdev, int freq,
8301 enum nl80211_channel_type type, gfp_t gfp)
8302 {
8303 struct sk_buff *msg;
8304 void *hdr;
8305
8306 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8307 if (!msg)
8308 return;
8309
8310 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8311 if (!hdr) {
8312 nlmsg_free(msg);
8313 return;
8314 }
8315
8316 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8317 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8318 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8319 goto nla_put_failure;
8320
8321 genlmsg_end(msg, hdr);
8322
8323 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8324 nl80211_mlme_mcgrp.id, gfp);
8325 return;
8326
8327 nla_put_failure:
8328 genlmsg_cancel(msg, hdr);
8329 nlmsg_free(msg);
8330 }
8331
8332 void
8333 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8334 struct net_device *netdev, const u8 *peer,
8335 u32 num_packets, gfp_t gfp)
8336 {
8337 struct sk_buff *msg;
8338 struct nlattr *pinfoattr;
8339 void *hdr;
8340
8341 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8342 if (!msg)
8343 return;
8344
8345 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8346 if (!hdr) {
8347 nlmsg_free(msg);
8348 return;
8349 }
8350
8351 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8352 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8353 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8354 goto nla_put_failure;
8355
8356 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8357 if (!pinfoattr)
8358 goto nla_put_failure;
8359
8360 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8361 goto nla_put_failure;
8362
8363 nla_nest_end(msg, pinfoattr);
8364
8365 genlmsg_end(msg, hdr);
8366
8367 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8368 nl80211_mlme_mcgrp.id, gfp);
8369 return;
8370
8371 nla_put_failure:
8372 genlmsg_cancel(msg, hdr);
8373 nlmsg_free(msg);
8374 }
8375
8376 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8377 u64 cookie, bool acked, gfp_t gfp)
8378 {
8379 struct wireless_dev *wdev = dev->ieee80211_ptr;
8380 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8381 struct sk_buff *msg;
8382 void *hdr;
8383 int err;
8384
8385 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8386 if (!msg)
8387 return;
8388
8389 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8390 if (!hdr) {
8391 nlmsg_free(msg);
8392 return;
8393 }
8394
8395 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8396 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8397 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8398 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8399 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8400 goto nla_put_failure;
8401
8402 err = genlmsg_end(msg, hdr);
8403 if (err < 0) {
8404 nlmsg_free(msg);
8405 return;
8406 }
8407
8408 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8409 nl80211_mlme_mcgrp.id, gfp);
8410 return;
8411
8412 nla_put_failure:
8413 genlmsg_cancel(msg, hdr);
8414 nlmsg_free(msg);
8415 }
8416 EXPORT_SYMBOL(cfg80211_probe_status);
8417
8418 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8419 const u8 *frame, size_t len,
8420 int freq, int sig_dbm, gfp_t gfp)
8421 {
8422 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8423 struct sk_buff *msg;
8424 void *hdr;
8425 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
8426
8427 if (!nlpid)
8428 return;
8429
8430 msg = nlmsg_new(len + 100, gfp);
8431 if (!msg)
8432 return;
8433
8434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8435 if (!hdr) {
8436 nlmsg_free(msg);
8437 return;
8438 }
8439
8440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8441 (freq &&
8442 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8443 (sig_dbm &&
8444 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8445 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8446 goto nla_put_failure;
8447
8448 genlmsg_end(msg, hdr);
8449
8450 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8451 return;
8452
8453 nla_put_failure:
8454 genlmsg_cancel(msg, hdr);
8455 nlmsg_free(msg);
8456 }
8457 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8458
8459 static int nl80211_netlink_notify(struct notifier_block * nb,
8460 unsigned long state,
8461 void *_notify)
8462 {
8463 struct netlink_notify *notify = _notify;
8464 struct cfg80211_registered_device *rdev;
8465 struct wireless_dev *wdev;
8466
8467 if (state != NETLINK_URELEASE)
8468 return NOTIFY_DONE;
8469
8470 rcu_read_lock();
8471
8472 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8473 list_for_each_entry_rcu(wdev, &rdev->netdev_list, list)
8474 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8475 if (rdev->ap_beacons_nlpid == notify->pid)
8476 rdev->ap_beacons_nlpid = 0;
8477 }
8478
8479 rcu_read_unlock();
8480
8481 return NOTIFY_DONE;
8482 }
8483
8484 static struct notifier_block nl80211_netlink_notifier = {
8485 .notifier_call = nl80211_netlink_notify,
8486 };
8487
8488 /* initialisation/exit functions */
8489
8490 int nl80211_init(void)
8491 {
8492 int err;
8493
8494 err = genl_register_family_with_ops(&nl80211_fam,
8495 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8496 if (err)
8497 return err;
8498
8499 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8500 if (err)
8501 goto err_out;
8502
8503 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8504 if (err)
8505 goto err_out;
8506
8507 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8508 if (err)
8509 goto err_out;
8510
8511 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8512 if (err)
8513 goto err_out;
8514
8515 #ifdef CONFIG_NL80211_TESTMODE
8516 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8517 if (err)
8518 goto err_out;
8519 #endif
8520
8521 err = netlink_register_notifier(&nl80211_netlink_notifier);
8522 if (err)
8523 goto err_out;
8524
8525 return 0;
8526 err_out:
8527 genl_unregister_family(&nl80211_fam);
8528 return err;
8529 }
8530
8531 void nl80211_exit(void)
8532 {
8533 netlink_unregister_notifier(&nl80211_netlink_notifier);
8534 genl_unregister_family(&nl80211_fam);
8535 }
Linux kernel - Deliverables
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