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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[thirdparty/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 /* returns ERR_PTR values */
50 static struct wireless_dev *
51 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
52 {
53 struct cfg80211_registered_device *rdev;
54 struct wireless_dev *result = NULL;
55 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
56 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
57 u64 wdev_id;
58 int wiphy_idx = -1;
59 int ifidx = -1;
60
61 assert_cfg80211_lock();
62
63 if (!have_ifidx && !have_wdev_id)
64 return ERR_PTR(-EINVAL);
65
66 if (have_ifidx)
67 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
68 if (have_wdev_id) {
69 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
70 wiphy_idx = wdev_id >> 32;
71 }
72
73 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
74 struct wireless_dev *wdev;
75
76 if (wiphy_net(&rdev->wiphy) != netns)
77 continue;
78
79 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
80 continue;
81
82 mutex_lock(&rdev->devlist_mtx);
83 list_for_each_entry(wdev, &rdev->wdev_list, list) {
84 if (have_ifidx && wdev->netdev &&
85 wdev->netdev->ifindex == ifidx) {
86 result = wdev;
87 break;
88 }
89 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
90 result = wdev;
91 break;
92 }
93 }
94 mutex_unlock(&rdev->devlist_mtx);
95
96 if (result)
97 break;
98 }
99
100 if (result)
101 return result;
102 return ERR_PTR(-ENODEV);
103 }
104
105 static struct cfg80211_registered_device *
106 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
107 {
108 struct cfg80211_registered_device *rdev = NULL, *tmp;
109 struct net_device *netdev;
110
111 assert_cfg80211_lock();
112
113 if (!attrs[NL80211_ATTR_WIPHY] &&
114 !attrs[NL80211_ATTR_IFINDEX] &&
115 !attrs[NL80211_ATTR_WDEV])
116 return ERR_PTR(-EINVAL);
117
118 if (attrs[NL80211_ATTR_WIPHY])
119 rdev = cfg80211_rdev_by_wiphy_idx(
120 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
121
122 if (attrs[NL80211_ATTR_WDEV]) {
123 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
124 struct wireless_dev *wdev;
125 bool found = false;
126
127 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
128 if (tmp) {
129 /* make sure wdev exists */
130 mutex_lock(&tmp->devlist_mtx);
131 list_for_each_entry(wdev, &tmp->wdev_list, list) {
132 if (wdev->identifier != (u32)wdev_id)
133 continue;
134 found = true;
135 break;
136 }
137 mutex_unlock(&tmp->devlist_mtx);
138
139 if (!found)
140 tmp = NULL;
141
142 if (rdev && tmp != rdev)
143 return ERR_PTR(-EINVAL);
144 rdev = tmp;
145 }
146 }
147
148 if (attrs[NL80211_ATTR_IFINDEX]) {
149 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
150 netdev = dev_get_by_index(netns, ifindex);
151 if (netdev) {
152 if (netdev->ieee80211_ptr)
153 tmp = wiphy_to_dev(
154 netdev->ieee80211_ptr->wiphy);
155 else
156 tmp = NULL;
157
158 dev_put(netdev);
159
160 /* not wireless device -- return error */
161 if (!tmp)
162 return ERR_PTR(-EINVAL);
163
164 /* mismatch -- return error */
165 if (rdev && tmp != rdev)
166 return ERR_PTR(-EINVAL);
167
168 rdev = tmp;
169 }
170 }
171
172 if (!rdev)
173 return ERR_PTR(-ENODEV);
174
175 if (netns != wiphy_net(&rdev->wiphy))
176 return ERR_PTR(-ENODEV);
177
178 return rdev;
179 }
180
181 /*
182 * This function returns a pointer to the driver
183 * that the genl_info item that is passed refers to.
184 * If successful, it returns non-NULL and also locks
185 * the driver's mutex!
186 *
187 * This means that you need to call cfg80211_unlock_rdev()
188 * before being allowed to acquire &cfg80211_mutex!
189 *
190 * This is necessary because we need to lock the global
191 * mutex to get an item off the list safely, and then
192 * we lock the rdev mutex so it doesn't go away under us.
193 *
194 * We don't want to keep cfg80211_mutex locked
195 * for all the time in order to allow requests on
196 * other interfaces to go through at the same time.
197 *
198 * The result of this can be a PTR_ERR and hence must
199 * be checked with IS_ERR() for errors.
200 */
201 static struct cfg80211_registered_device *
202 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
203 {
204 struct cfg80211_registered_device *rdev;
205
206 mutex_lock(&cfg80211_mutex);
207 rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
208
209 /* if it is not an error we grab the lock on
210 * it to assure it won't be going away while
211 * we operate on it */
212 if (!IS_ERR(rdev))
213 mutex_lock(&rdev->mtx);
214
215 mutex_unlock(&cfg80211_mutex);
216
217 return rdev;
218 }
219
220 /* policy for the attributes */
221 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
222 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
223 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
224 .len = 20-1 },
225 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
226 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
230 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
231 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
232 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
233
234 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
235 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
236 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
237
238 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
239 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
240
241 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
242 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
243 .len = WLAN_MAX_KEY_LEN },
244 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
245 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
246 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
247 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
248 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
249
250 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
251 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
252 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_DATA_LEN },
254 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
255 .len = IEEE80211_MAX_DATA_LEN },
256 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
257 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
258 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
259 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
260 .len = NL80211_MAX_SUPP_RATES },
261 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
262 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
263 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
264 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
265 .len = IEEE80211_MAX_MESH_ID_LEN },
266 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
267
268 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
269 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
270
271 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
273 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
274 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
275 .len = NL80211_MAX_SUPP_RATES },
276 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
277
278 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
279 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
280
281 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
282
283 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
284 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_DATA_LEN },
286 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
287 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
288
289 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
290 .len = IEEE80211_MAX_SSID_LEN },
291 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
292 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
293 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
294 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
295 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
296 [NL80211_ATTR_STA_FLAGS2] = {
297 .len = sizeof(struct nl80211_sta_flag_update),
298 },
299 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
301 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
302 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
303 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
304 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
305 [NL80211_ATTR_PID] = { .type = NLA_U32 },
306 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
307 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
308 .len = WLAN_PMKID_LEN },
309 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
310 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
311 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
312 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
313 .len = IEEE80211_MAX_DATA_LEN },
314 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
315 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
316 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
317 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
318 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
319 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
321 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
322 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
323 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
324 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
325 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
326 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
327 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
328 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
329 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
330 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
331 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
332 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
333 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
334 .len = IEEE80211_MAX_DATA_LEN },
335 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
336 .len = IEEE80211_MAX_DATA_LEN },
337 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
338 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
339 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
340 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
342 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
343 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
344 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
345 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
346 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
347 .len = IEEE80211_MAX_DATA_LEN },
348 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
349 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
350 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
351 .len = NL80211_HT_CAPABILITY_LEN
352 },
353 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
354 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
355 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
356 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
357 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
358 };
359
360 /* policy for the key attributes */
361 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
362 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
363 [NL80211_KEY_IDX] = { .type = NLA_U8 },
364 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
365 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
366 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
367 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
368 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
369 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
370 };
371
372 /* policy for the key default flags */
373 static const struct nla_policy
374 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
375 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
376 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
377 };
378
379 /* policy for WoWLAN attributes */
380 static const struct nla_policy
381 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
382 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
383 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
384 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
385 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
386 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
387 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
388 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
389 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
390 };
391
392 /* policy for GTK rekey offload attributes */
393 static const struct nla_policy
394 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
395 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
396 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
397 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
398 };
399
400 static const struct nla_policy
401 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
402 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
403 .len = IEEE80211_MAX_SSID_LEN },
404 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
405 };
406
407 /* ifidx get helper */
408 static int nl80211_get_ifidx(struct netlink_callback *cb)
409 {
410 int res;
411
412 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
413 nl80211_fam.attrbuf, nl80211_fam.maxattr,
414 nl80211_policy);
415 if (res)
416 return res;
417
418 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
419 return -EINVAL;
420
421 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
422 if (!res)
423 return -EINVAL;
424 return res;
425 }
426
427 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
428 struct netlink_callback *cb,
429 struct cfg80211_registered_device **rdev,
430 struct net_device **dev)
431 {
432 int ifidx = cb->args[0];
433 int err;
434
435 if (!ifidx)
436 ifidx = nl80211_get_ifidx(cb);
437 if (ifidx < 0)
438 return ifidx;
439
440 cb->args[0] = ifidx;
441
442 rtnl_lock();
443
444 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
445 if (!*dev) {
446 err = -ENODEV;
447 goto out_rtnl;
448 }
449
450 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
451 if (IS_ERR(*rdev)) {
452 err = PTR_ERR(*rdev);
453 goto out_rtnl;
454 }
455
456 return 0;
457 out_rtnl:
458 rtnl_unlock();
459 return err;
460 }
461
462 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
463 {
464 cfg80211_unlock_rdev(rdev);
465 rtnl_unlock();
466 }
467
468 /* IE validation */
469 static bool is_valid_ie_attr(const struct nlattr *attr)
470 {
471 const u8 *pos;
472 int len;
473
474 if (!attr)
475 return true;
476
477 pos = nla_data(attr);
478 len = nla_len(attr);
479
480 while (len) {
481 u8 elemlen;
482
483 if (len < 2)
484 return false;
485 len -= 2;
486
487 elemlen = pos[1];
488 if (elemlen > len)
489 return false;
490
491 len -= elemlen;
492 pos += 2 + elemlen;
493 }
494
495 return true;
496 }
497
498 /* message building helper */
499 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq,
500 int flags, u8 cmd)
501 {
502 /* since there is no private header just add the generic one */
503 return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd);
504 }
505
506 static int nl80211_msg_put_channel(struct sk_buff *msg,
507 struct ieee80211_channel *chan)
508 {
509 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
510 chan->center_freq))
511 goto nla_put_failure;
512
513 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
514 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
515 goto nla_put_failure;
516 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
517 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
518 goto nla_put_failure;
519 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
520 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
521 goto nla_put_failure;
522 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
523 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
524 goto nla_put_failure;
525
526 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
527 DBM_TO_MBM(chan->max_power)))
528 goto nla_put_failure;
529
530 return 0;
531
532 nla_put_failure:
533 return -ENOBUFS;
534 }
535
536 /* netlink command implementations */
537
538 struct key_parse {
539 struct key_params p;
540 int idx;
541 int type;
542 bool def, defmgmt;
543 bool def_uni, def_multi;
544 };
545
546 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
547 {
548 struct nlattr *tb[NL80211_KEY_MAX + 1];
549 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
550 nl80211_key_policy);
551 if (err)
552 return err;
553
554 k->def = !!tb[NL80211_KEY_DEFAULT];
555 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
556
557 if (k->def) {
558 k->def_uni = true;
559 k->def_multi = true;
560 }
561 if (k->defmgmt)
562 k->def_multi = true;
563
564 if (tb[NL80211_KEY_IDX])
565 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
566
567 if (tb[NL80211_KEY_DATA]) {
568 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
569 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
570 }
571
572 if (tb[NL80211_KEY_SEQ]) {
573 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
574 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
575 }
576
577 if (tb[NL80211_KEY_CIPHER])
578 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
579
580 if (tb[NL80211_KEY_TYPE]) {
581 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
582 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
583 return -EINVAL;
584 }
585
586 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
587 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
588 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
589 tb[NL80211_KEY_DEFAULT_TYPES],
590 nl80211_key_default_policy);
591 if (err)
592 return err;
593
594 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
595 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
596 }
597
598 return 0;
599 }
600
601 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
602 {
603 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
604 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
605 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
606 }
607
608 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
609 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
610 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
611 }
612
613 if (info->attrs[NL80211_ATTR_KEY_IDX])
614 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
615
616 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
617 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
618
619 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
620 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
621
622 if (k->def) {
623 k->def_uni = true;
624 k->def_multi = true;
625 }
626 if (k->defmgmt)
627 k->def_multi = true;
628
629 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
630 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
631 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
632 return -EINVAL;
633 }
634
635 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
636 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
637 int err = nla_parse_nested(
638 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
639 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
640 nl80211_key_default_policy);
641 if (err)
642 return err;
643
644 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
645 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
646 }
647
648 return 0;
649 }
650
651 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
652 {
653 int err;
654
655 memset(k, 0, sizeof(*k));
656 k->idx = -1;
657 k->type = -1;
658
659 if (info->attrs[NL80211_ATTR_KEY])
660 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
661 else
662 err = nl80211_parse_key_old(info, k);
663
664 if (err)
665 return err;
666
667 if (k->def && k->defmgmt)
668 return -EINVAL;
669
670 if (k->defmgmt) {
671 if (k->def_uni || !k->def_multi)
672 return -EINVAL;
673 }
674
675 if (k->idx != -1) {
676 if (k->defmgmt) {
677 if (k->idx < 4 || k->idx > 5)
678 return -EINVAL;
679 } else if (k->def) {
680 if (k->idx < 0 || k->idx > 3)
681 return -EINVAL;
682 } else {
683 if (k->idx < 0 || k->idx > 5)
684 return -EINVAL;
685 }
686 }
687
688 return 0;
689 }
690
691 static struct cfg80211_cached_keys *
692 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
693 struct nlattr *keys)
694 {
695 struct key_parse parse;
696 struct nlattr *key;
697 struct cfg80211_cached_keys *result;
698 int rem, err, def = 0;
699
700 result = kzalloc(sizeof(*result), GFP_KERNEL);
701 if (!result)
702 return ERR_PTR(-ENOMEM);
703
704 result->def = -1;
705 result->defmgmt = -1;
706
707 nla_for_each_nested(key, keys, rem) {
708 memset(&parse, 0, sizeof(parse));
709 parse.idx = -1;
710
711 err = nl80211_parse_key_new(key, &parse);
712 if (err)
713 goto error;
714 err = -EINVAL;
715 if (!parse.p.key)
716 goto error;
717 if (parse.idx < 0 || parse.idx > 4)
718 goto error;
719 if (parse.def) {
720 if (def)
721 goto error;
722 def = 1;
723 result->def = parse.idx;
724 if (!parse.def_uni || !parse.def_multi)
725 goto error;
726 } else if (parse.defmgmt)
727 goto error;
728 err = cfg80211_validate_key_settings(rdev, &parse.p,
729 parse.idx, false, NULL);
730 if (err)
731 goto error;
732 result->params[parse.idx].cipher = parse.p.cipher;
733 result->params[parse.idx].key_len = parse.p.key_len;
734 result->params[parse.idx].key = result->data[parse.idx];
735 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
736 }
737
738 return result;
739 error:
740 kfree(result);
741 return ERR_PTR(err);
742 }
743
744 static int nl80211_key_allowed(struct wireless_dev *wdev)
745 {
746 ASSERT_WDEV_LOCK(wdev);
747
748 switch (wdev->iftype) {
749 case NL80211_IFTYPE_AP:
750 case NL80211_IFTYPE_AP_VLAN:
751 case NL80211_IFTYPE_P2P_GO:
752 case NL80211_IFTYPE_MESH_POINT:
753 break;
754 case NL80211_IFTYPE_ADHOC:
755 if (!wdev->current_bss)
756 return -ENOLINK;
757 break;
758 case NL80211_IFTYPE_STATION:
759 case NL80211_IFTYPE_P2P_CLIENT:
760 if (wdev->sme_state != CFG80211_SME_CONNECTED)
761 return -ENOLINK;
762 break;
763 default:
764 return -EINVAL;
765 }
766
767 return 0;
768 }
769
770 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
771 {
772 struct nlattr *nl_modes = nla_nest_start(msg, attr);
773 int i;
774
775 if (!nl_modes)
776 goto nla_put_failure;
777
778 i = 0;
779 while (ifmodes) {
780 if ((ifmodes & 1) && nla_put_flag(msg, i))
781 goto nla_put_failure;
782 ifmodes >>= 1;
783 i++;
784 }
785
786 nla_nest_end(msg, nl_modes);
787 return 0;
788
789 nla_put_failure:
790 return -ENOBUFS;
791 }
792
793 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
794 struct sk_buff *msg)
795 {
796 struct nlattr *nl_combis;
797 int i, j;
798
799 nl_combis = nla_nest_start(msg,
800 NL80211_ATTR_INTERFACE_COMBINATIONS);
801 if (!nl_combis)
802 goto nla_put_failure;
803
804 for (i = 0; i < wiphy->n_iface_combinations; i++) {
805 const struct ieee80211_iface_combination *c;
806 struct nlattr *nl_combi, *nl_limits;
807
808 c = &wiphy->iface_combinations[i];
809
810 nl_combi = nla_nest_start(msg, i + 1);
811 if (!nl_combi)
812 goto nla_put_failure;
813
814 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
815 if (!nl_limits)
816 goto nla_put_failure;
817
818 for (j = 0; j < c->n_limits; j++) {
819 struct nlattr *nl_limit;
820
821 nl_limit = nla_nest_start(msg, j + 1);
822 if (!nl_limit)
823 goto nla_put_failure;
824 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
825 c->limits[j].max))
826 goto nla_put_failure;
827 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
828 c->limits[j].types))
829 goto nla_put_failure;
830 nla_nest_end(msg, nl_limit);
831 }
832
833 nla_nest_end(msg, nl_limits);
834
835 if (c->beacon_int_infra_match &&
836 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
837 goto nla_put_failure;
838 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
839 c->num_different_channels) ||
840 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
841 c->max_interfaces))
842 goto nla_put_failure;
843
844 nla_nest_end(msg, nl_combi);
845 }
846
847 nla_nest_end(msg, nl_combis);
848
849 return 0;
850 nla_put_failure:
851 return -ENOBUFS;
852 }
853
854 static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
855 struct cfg80211_registered_device *dev)
856 {
857 void *hdr;
858 struct nlattr *nl_bands, *nl_band;
859 struct nlattr *nl_freqs, *nl_freq;
860 struct nlattr *nl_rates, *nl_rate;
861 struct nlattr *nl_cmds;
862 enum ieee80211_band band;
863 struct ieee80211_channel *chan;
864 struct ieee80211_rate *rate;
865 int i;
866 const struct ieee80211_txrx_stypes *mgmt_stypes =
867 dev->wiphy.mgmt_stypes;
868
869 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY);
870 if (!hdr)
871 return -1;
872
873 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
874 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
875 nla_put_u32(msg, NL80211_ATTR_GENERATION,
876 cfg80211_rdev_list_generation) ||
877 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
878 dev->wiphy.retry_short) ||
879 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
880 dev->wiphy.retry_long) ||
881 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
882 dev->wiphy.frag_threshold) ||
883 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
884 dev->wiphy.rts_threshold) ||
885 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
886 dev->wiphy.coverage_class) ||
887 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
888 dev->wiphy.max_scan_ssids) ||
889 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
890 dev->wiphy.max_sched_scan_ssids) ||
891 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
892 dev->wiphy.max_scan_ie_len) ||
893 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
894 dev->wiphy.max_sched_scan_ie_len) ||
895 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
896 dev->wiphy.max_match_sets))
897 goto nla_put_failure;
898
899 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
900 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
901 goto nla_put_failure;
902 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
903 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
904 goto nla_put_failure;
905 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
906 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
907 goto nla_put_failure;
908 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
909 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
910 goto nla_put_failure;
911 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
912 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
913 goto nla_put_failure;
914 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
915 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
916 goto nla_put_failure;
917
918 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
919 sizeof(u32) * dev->wiphy.n_cipher_suites,
920 dev->wiphy.cipher_suites))
921 goto nla_put_failure;
922
923 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
924 dev->wiphy.max_num_pmkids))
925 goto nla_put_failure;
926
927 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
928 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
929 goto nla_put_failure;
930
931 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
932 dev->wiphy.available_antennas_tx) ||
933 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
934 dev->wiphy.available_antennas_rx))
935 goto nla_put_failure;
936
937 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
938 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
939 dev->wiphy.probe_resp_offload))
940 goto nla_put_failure;
941
942 if ((dev->wiphy.available_antennas_tx ||
943 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
944 u32 tx_ant = 0, rx_ant = 0;
945 int res;
946 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
947 if (!res) {
948 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
949 tx_ant) ||
950 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
951 rx_ant))
952 goto nla_put_failure;
953 }
954 }
955
956 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
957 dev->wiphy.interface_modes))
958 goto nla_put_failure;
959
960 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
961 if (!nl_bands)
962 goto nla_put_failure;
963
964 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
965 if (!dev->wiphy.bands[band])
966 continue;
967
968 nl_band = nla_nest_start(msg, band);
969 if (!nl_band)
970 goto nla_put_failure;
971
972 /* add HT info */
973 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
974 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
975 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
976 &dev->wiphy.bands[band]->ht_cap.mcs) ||
977 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
978 dev->wiphy.bands[band]->ht_cap.cap) ||
979 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
980 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
981 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
982 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
983 goto nla_put_failure;
984
985 /* add VHT info */
986 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
987 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
988 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
989 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
990 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
991 dev->wiphy.bands[band]->vht_cap.cap)))
992 goto nla_put_failure;
993
994 /* add frequencies */
995 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
996 if (!nl_freqs)
997 goto nla_put_failure;
998
999 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1000 nl_freq = nla_nest_start(msg, i);
1001 if (!nl_freq)
1002 goto nla_put_failure;
1003
1004 chan = &dev->wiphy.bands[band]->channels[i];
1005
1006 if (nl80211_msg_put_channel(msg, chan))
1007 goto nla_put_failure;
1008
1009 nla_nest_end(msg, nl_freq);
1010 }
1011
1012 nla_nest_end(msg, nl_freqs);
1013
1014 /* add bitrates */
1015 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1016 if (!nl_rates)
1017 goto nla_put_failure;
1018
1019 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1020 nl_rate = nla_nest_start(msg, i);
1021 if (!nl_rate)
1022 goto nla_put_failure;
1023
1024 rate = &dev->wiphy.bands[band]->bitrates[i];
1025 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1026 rate->bitrate))
1027 goto nla_put_failure;
1028 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1029 nla_put_flag(msg,
1030 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1031 goto nla_put_failure;
1032
1033 nla_nest_end(msg, nl_rate);
1034 }
1035
1036 nla_nest_end(msg, nl_rates);
1037
1038 nla_nest_end(msg, nl_band);
1039 }
1040 nla_nest_end(msg, nl_bands);
1041
1042 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1043 if (!nl_cmds)
1044 goto nla_put_failure;
1045
1046 i = 0;
1047 #define CMD(op, n) \
1048 do { \
1049 if (dev->ops->op) { \
1050 i++; \
1051 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1052 goto nla_put_failure; \
1053 } \
1054 } while (0)
1055
1056 CMD(add_virtual_intf, NEW_INTERFACE);
1057 CMD(change_virtual_intf, SET_INTERFACE);
1058 CMD(add_key, NEW_KEY);
1059 CMD(start_ap, START_AP);
1060 CMD(add_station, NEW_STATION);
1061 CMD(add_mpath, NEW_MPATH);
1062 CMD(update_mesh_config, SET_MESH_CONFIG);
1063 CMD(change_bss, SET_BSS);
1064 CMD(auth, AUTHENTICATE);
1065 CMD(assoc, ASSOCIATE);
1066 CMD(deauth, DEAUTHENTICATE);
1067 CMD(disassoc, DISASSOCIATE);
1068 CMD(join_ibss, JOIN_IBSS);
1069 CMD(join_mesh, JOIN_MESH);
1070 CMD(set_pmksa, SET_PMKSA);
1071 CMD(del_pmksa, DEL_PMKSA);
1072 CMD(flush_pmksa, FLUSH_PMKSA);
1073 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1074 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1075 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1076 CMD(mgmt_tx, FRAME);
1077 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1078 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1079 i++;
1080 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1081 goto nla_put_failure;
1082 }
1083 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1084 dev->ops->join_mesh) {
1085 i++;
1086 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1087 goto nla_put_failure;
1088 }
1089 CMD(set_wds_peer, SET_WDS_PEER);
1090 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1091 CMD(tdls_mgmt, TDLS_MGMT);
1092 CMD(tdls_oper, TDLS_OPER);
1093 }
1094 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1095 CMD(sched_scan_start, START_SCHED_SCAN);
1096 CMD(probe_client, PROBE_CLIENT);
1097 CMD(set_noack_map, SET_NOACK_MAP);
1098 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1099 i++;
1100 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1101 goto nla_put_failure;
1102 }
1103 CMD(start_p2p_device, START_P2P_DEVICE);
1104
1105 #ifdef CONFIG_NL80211_TESTMODE
1106 CMD(testmode_cmd, TESTMODE);
1107 #endif
1108
1109 #undef CMD
1110
1111 if (dev->ops->connect || dev->ops->auth) {
1112 i++;
1113 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1114 goto nla_put_failure;
1115 }
1116
1117 if (dev->ops->disconnect || dev->ops->deauth) {
1118 i++;
1119 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1120 goto nla_put_failure;
1121 }
1122
1123 nla_nest_end(msg, nl_cmds);
1124
1125 if (dev->ops->remain_on_channel &&
1126 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1127 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1128 dev->wiphy.max_remain_on_channel_duration))
1129 goto nla_put_failure;
1130
1131 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1132 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1133 goto nla_put_failure;
1134
1135 if (mgmt_stypes) {
1136 u16 stypes;
1137 struct nlattr *nl_ftypes, *nl_ifs;
1138 enum nl80211_iftype ift;
1139
1140 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1141 if (!nl_ifs)
1142 goto nla_put_failure;
1143
1144 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1145 nl_ftypes = nla_nest_start(msg, ift);
1146 if (!nl_ftypes)
1147 goto nla_put_failure;
1148 i = 0;
1149 stypes = mgmt_stypes[ift].tx;
1150 while (stypes) {
1151 if ((stypes & 1) &&
1152 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1153 (i << 4) | IEEE80211_FTYPE_MGMT))
1154 goto nla_put_failure;
1155 stypes >>= 1;
1156 i++;
1157 }
1158 nla_nest_end(msg, nl_ftypes);
1159 }
1160
1161 nla_nest_end(msg, nl_ifs);
1162
1163 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1164 if (!nl_ifs)
1165 goto nla_put_failure;
1166
1167 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1168 nl_ftypes = nla_nest_start(msg, ift);
1169 if (!nl_ftypes)
1170 goto nla_put_failure;
1171 i = 0;
1172 stypes = mgmt_stypes[ift].rx;
1173 while (stypes) {
1174 if ((stypes & 1) &&
1175 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1176 (i << 4) | IEEE80211_FTYPE_MGMT))
1177 goto nla_put_failure;
1178 stypes >>= 1;
1179 i++;
1180 }
1181 nla_nest_end(msg, nl_ftypes);
1182 }
1183 nla_nest_end(msg, nl_ifs);
1184 }
1185
1186 #ifdef CONFIG_PM
1187 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1188 struct nlattr *nl_wowlan;
1189
1190 nl_wowlan = nla_nest_start(msg,
1191 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1192 if (!nl_wowlan)
1193 goto nla_put_failure;
1194
1195 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1196 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1197 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1198 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1199 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1200 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1201 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1202 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1203 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1204 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1205 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1206 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1207 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1208 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1209 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1210 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1211 goto nla_put_failure;
1212 if (dev->wiphy.wowlan.n_patterns) {
1213 struct nl80211_wowlan_pattern_support pat = {
1214 .max_patterns = dev->wiphy.wowlan.n_patterns,
1215 .min_pattern_len =
1216 dev->wiphy.wowlan.pattern_min_len,
1217 .max_pattern_len =
1218 dev->wiphy.wowlan.pattern_max_len,
1219 };
1220 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1221 sizeof(pat), &pat))
1222 goto nla_put_failure;
1223 }
1224
1225 nla_nest_end(msg, nl_wowlan);
1226 }
1227 #endif
1228
1229 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1230 dev->wiphy.software_iftypes))
1231 goto nla_put_failure;
1232
1233 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1234 goto nla_put_failure;
1235
1236 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1237 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1238 dev->wiphy.ap_sme_capa))
1239 goto nla_put_failure;
1240
1241 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1242 dev->wiphy.features))
1243 goto nla_put_failure;
1244
1245 if (dev->wiphy.ht_capa_mod_mask &&
1246 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1247 sizeof(*dev->wiphy.ht_capa_mod_mask),
1248 dev->wiphy.ht_capa_mod_mask))
1249 goto nla_put_failure;
1250
1251 return genlmsg_end(msg, hdr);
1252
1253 nla_put_failure:
1254 genlmsg_cancel(msg, hdr);
1255 return -EMSGSIZE;
1256 }
1257
1258 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1259 {
1260 int idx = 0;
1261 int start = cb->args[0];
1262 struct cfg80211_registered_device *dev;
1263
1264 mutex_lock(&cfg80211_mutex);
1265 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1266 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1267 continue;
1268 if (++idx <= start)
1269 continue;
1270 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid,
1271 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1272 dev) < 0) {
1273 idx--;
1274 break;
1275 }
1276 }
1277 mutex_unlock(&cfg80211_mutex);
1278
1279 cb->args[0] = idx;
1280
1281 return skb->len;
1282 }
1283
1284 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1285 {
1286 struct sk_buff *msg;
1287 struct cfg80211_registered_device *dev = info->user_ptr[0];
1288
1289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1290 if (!msg)
1291 return -ENOMEM;
1292
1293 if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
1294 nlmsg_free(msg);
1295 return -ENOBUFS;
1296 }
1297
1298 return genlmsg_reply(msg, info);
1299 }
1300
1301 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1302 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1303 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1304 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1305 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1306 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1307 };
1308
1309 static int parse_txq_params(struct nlattr *tb[],
1310 struct ieee80211_txq_params *txq_params)
1311 {
1312 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1313 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1314 !tb[NL80211_TXQ_ATTR_AIFS])
1315 return -EINVAL;
1316
1317 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1318 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1319 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1320 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1321 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1322
1323 if (txq_params->ac >= NL80211_NUM_ACS)
1324 return -EINVAL;
1325
1326 return 0;
1327 }
1328
1329 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1330 {
1331 /*
1332 * You can only set the channel explicitly for WDS interfaces,
1333 * all others have their channel managed via their respective
1334 * "establish a connection" command (connect, join, ...)
1335 *
1336 * For AP/GO and mesh mode, the channel can be set with the
1337 * channel userspace API, but is only stored and passed to the
1338 * low-level driver when the AP starts or the mesh is joined.
1339 * This is for backward compatibility, userspace can also give
1340 * the channel in the start-ap or join-mesh commands instead.
1341 *
1342 * Monitors are special as they are normally slaved to
1343 * whatever else is going on, so they have their own special
1344 * operation to set the monitor channel if possible.
1345 */
1346 return !wdev ||
1347 wdev->iftype == NL80211_IFTYPE_AP ||
1348 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1349 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1350 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1351 }
1352
1353 static bool nl80211_valid_channel_type(struct genl_info *info,
1354 enum nl80211_channel_type *channel_type)
1355 {
1356 enum nl80211_channel_type tmp;
1357
1358 if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1359 return false;
1360
1361 tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1362 if (tmp != NL80211_CHAN_NO_HT &&
1363 tmp != NL80211_CHAN_HT20 &&
1364 tmp != NL80211_CHAN_HT40PLUS &&
1365 tmp != NL80211_CHAN_HT40MINUS)
1366 return false;
1367
1368 if (channel_type)
1369 *channel_type = tmp;
1370
1371 return true;
1372 }
1373
1374 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1375 struct wireless_dev *wdev,
1376 struct genl_info *info)
1377 {
1378 struct ieee80211_channel *channel;
1379 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1380 u32 freq;
1381 int result;
1382 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1383
1384 if (wdev)
1385 iftype = wdev->iftype;
1386
1387 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1388 return -EINVAL;
1389
1390 if (!nl80211_can_set_dev_channel(wdev))
1391 return -EOPNOTSUPP;
1392
1393 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1394 !nl80211_valid_channel_type(info, &channel_type))
1395 return -EINVAL;
1396
1397 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1398
1399 mutex_lock(&rdev->devlist_mtx);
1400 switch (iftype) {
1401 case NL80211_IFTYPE_AP:
1402 case NL80211_IFTYPE_P2P_GO:
1403 if (wdev->beacon_interval) {
1404 result = -EBUSY;
1405 break;
1406 }
1407 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1408 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1409 channel,
1410 channel_type)) {
1411 result = -EINVAL;
1412 break;
1413 }
1414 wdev->preset_chan = channel;
1415 wdev->preset_chantype = channel_type;
1416 result = 0;
1417 break;
1418 case NL80211_IFTYPE_MESH_POINT:
1419 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1420 break;
1421 case NL80211_IFTYPE_MONITOR:
1422 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1423 break;
1424 default:
1425 result = -EINVAL;
1426 }
1427 mutex_unlock(&rdev->devlist_mtx);
1428
1429 return result;
1430 }
1431
1432 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1433 {
1434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1435 struct net_device *netdev = info->user_ptr[1];
1436
1437 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1438 }
1439
1440 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1441 {
1442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1443 struct net_device *dev = info->user_ptr[1];
1444 struct wireless_dev *wdev = dev->ieee80211_ptr;
1445 const u8 *bssid;
1446
1447 if (!info->attrs[NL80211_ATTR_MAC])
1448 return -EINVAL;
1449
1450 if (netif_running(dev))
1451 return -EBUSY;
1452
1453 if (!rdev->ops->set_wds_peer)
1454 return -EOPNOTSUPP;
1455
1456 if (wdev->iftype != NL80211_IFTYPE_WDS)
1457 return -EOPNOTSUPP;
1458
1459 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1460 return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1461 }
1462
1463
1464 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1465 {
1466 struct cfg80211_registered_device *rdev;
1467 struct net_device *netdev = NULL;
1468 struct wireless_dev *wdev;
1469 int result = 0, rem_txq_params = 0;
1470 struct nlattr *nl_txq_params;
1471 u32 changed;
1472 u8 retry_short = 0, retry_long = 0;
1473 u32 frag_threshold = 0, rts_threshold = 0;
1474 u8 coverage_class = 0;
1475
1476 /*
1477 * Try to find the wiphy and netdev. Normally this
1478 * function shouldn't need the netdev, but this is
1479 * done for backward compatibility -- previously
1480 * setting the channel was done per wiphy, but now
1481 * it is per netdev. Previous userland like hostapd
1482 * also passed a netdev to set_wiphy, so that it is
1483 * possible to let that go to the right netdev!
1484 */
1485 mutex_lock(&cfg80211_mutex);
1486
1487 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1488 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1489
1490 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1491 if (netdev && netdev->ieee80211_ptr) {
1492 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1493 mutex_lock(&rdev->mtx);
1494 } else
1495 netdev = NULL;
1496 }
1497
1498 if (!netdev) {
1499 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1500 info->attrs);
1501 if (IS_ERR(rdev)) {
1502 mutex_unlock(&cfg80211_mutex);
1503 return PTR_ERR(rdev);
1504 }
1505 wdev = NULL;
1506 netdev = NULL;
1507 result = 0;
1508
1509 mutex_lock(&rdev->mtx);
1510 } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1511 wdev = netdev->ieee80211_ptr;
1512 else
1513 wdev = NULL;
1514
1515 /*
1516 * end workaround code, by now the rdev is available
1517 * and locked, and wdev may or may not be NULL.
1518 */
1519
1520 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1521 result = cfg80211_dev_rename(
1522 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1523
1524 mutex_unlock(&cfg80211_mutex);
1525
1526 if (result)
1527 goto bad_res;
1528
1529 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1530 struct ieee80211_txq_params txq_params;
1531 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1532
1533 if (!rdev->ops->set_txq_params) {
1534 result = -EOPNOTSUPP;
1535 goto bad_res;
1536 }
1537
1538 if (!netdev) {
1539 result = -EINVAL;
1540 goto bad_res;
1541 }
1542
1543 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1544 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1545 result = -EINVAL;
1546 goto bad_res;
1547 }
1548
1549 if (!netif_running(netdev)) {
1550 result = -ENETDOWN;
1551 goto bad_res;
1552 }
1553
1554 nla_for_each_nested(nl_txq_params,
1555 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1556 rem_txq_params) {
1557 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1558 nla_data(nl_txq_params),
1559 nla_len(nl_txq_params),
1560 txq_params_policy);
1561 result = parse_txq_params(tb, &txq_params);
1562 if (result)
1563 goto bad_res;
1564
1565 result = rdev->ops->set_txq_params(&rdev->wiphy,
1566 netdev,
1567 &txq_params);
1568 if (result)
1569 goto bad_res;
1570 }
1571 }
1572
1573 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1574 result = __nl80211_set_channel(rdev, wdev, info);
1575 if (result)
1576 goto bad_res;
1577 }
1578
1579 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1580 enum nl80211_tx_power_setting type;
1581 int idx, mbm = 0;
1582
1583 if (!rdev->ops->set_tx_power) {
1584 result = -EOPNOTSUPP;
1585 goto bad_res;
1586 }
1587
1588 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1589 type = nla_get_u32(info->attrs[idx]);
1590
1591 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1592 (type != NL80211_TX_POWER_AUTOMATIC)) {
1593 result = -EINVAL;
1594 goto bad_res;
1595 }
1596
1597 if (type != NL80211_TX_POWER_AUTOMATIC) {
1598 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1599 mbm = nla_get_u32(info->attrs[idx]);
1600 }
1601
1602 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1603 if (result)
1604 goto bad_res;
1605 }
1606
1607 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1608 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1609 u32 tx_ant, rx_ant;
1610 if ((!rdev->wiphy.available_antennas_tx &&
1611 !rdev->wiphy.available_antennas_rx) ||
1612 !rdev->ops->set_antenna) {
1613 result = -EOPNOTSUPP;
1614 goto bad_res;
1615 }
1616
1617 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1618 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1619
1620 /* reject antenna configurations which don't match the
1621 * available antenna masks, except for the "all" mask */
1622 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1623 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1624 result = -EINVAL;
1625 goto bad_res;
1626 }
1627
1628 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1629 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1630
1631 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1632 if (result)
1633 goto bad_res;
1634 }
1635
1636 changed = 0;
1637
1638 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1639 retry_short = nla_get_u8(
1640 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1641 if (retry_short == 0) {
1642 result = -EINVAL;
1643 goto bad_res;
1644 }
1645 changed |= WIPHY_PARAM_RETRY_SHORT;
1646 }
1647
1648 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1649 retry_long = nla_get_u8(
1650 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1651 if (retry_long == 0) {
1652 result = -EINVAL;
1653 goto bad_res;
1654 }
1655 changed |= WIPHY_PARAM_RETRY_LONG;
1656 }
1657
1658 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1659 frag_threshold = nla_get_u32(
1660 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1661 if (frag_threshold < 256) {
1662 result = -EINVAL;
1663 goto bad_res;
1664 }
1665 if (frag_threshold != (u32) -1) {
1666 /*
1667 * Fragments (apart from the last one) are required to
1668 * have even length. Make the fragmentation code
1669 * simpler by stripping LSB should someone try to use
1670 * odd threshold value.
1671 */
1672 frag_threshold &= ~0x1;
1673 }
1674 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1675 }
1676
1677 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1678 rts_threshold = nla_get_u32(
1679 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1680 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1681 }
1682
1683 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1684 coverage_class = nla_get_u8(
1685 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1686 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1687 }
1688
1689 if (changed) {
1690 u8 old_retry_short, old_retry_long;
1691 u32 old_frag_threshold, old_rts_threshold;
1692 u8 old_coverage_class;
1693
1694 if (!rdev->ops->set_wiphy_params) {
1695 result = -EOPNOTSUPP;
1696 goto bad_res;
1697 }
1698
1699 old_retry_short = rdev->wiphy.retry_short;
1700 old_retry_long = rdev->wiphy.retry_long;
1701 old_frag_threshold = rdev->wiphy.frag_threshold;
1702 old_rts_threshold = rdev->wiphy.rts_threshold;
1703 old_coverage_class = rdev->wiphy.coverage_class;
1704
1705 if (changed & WIPHY_PARAM_RETRY_SHORT)
1706 rdev->wiphy.retry_short = retry_short;
1707 if (changed & WIPHY_PARAM_RETRY_LONG)
1708 rdev->wiphy.retry_long = retry_long;
1709 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1710 rdev->wiphy.frag_threshold = frag_threshold;
1711 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1712 rdev->wiphy.rts_threshold = rts_threshold;
1713 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1714 rdev->wiphy.coverage_class = coverage_class;
1715
1716 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1717 if (result) {
1718 rdev->wiphy.retry_short = old_retry_short;
1719 rdev->wiphy.retry_long = old_retry_long;
1720 rdev->wiphy.frag_threshold = old_frag_threshold;
1721 rdev->wiphy.rts_threshold = old_rts_threshold;
1722 rdev->wiphy.coverage_class = old_coverage_class;
1723 }
1724 }
1725
1726 bad_res:
1727 mutex_unlock(&rdev->mtx);
1728 if (netdev)
1729 dev_put(netdev);
1730 return result;
1731 }
1732
1733 static inline u64 wdev_id(struct wireless_dev *wdev)
1734 {
1735 return (u64)wdev->identifier |
1736 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1737 }
1738
1739 static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags,
1740 struct cfg80211_registered_device *rdev,
1741 struct wireless_dev *wdev)
1742 {
1743 struct net_device *dev = wdev->netdev;
1744 void *hdr;
1745
1746 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1747 if (!hdr)
1748 return -1;
1749
1750 if (dev &&
1751 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1752 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1753 goto nla_put_failure;
1754
1755 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1756 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1757 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1758 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1759 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1760 rdev->devlist_generation ^
1761 (cfg80211_rdev_list_generation << 2)))
1762 goto nla_put_failure;
1763
1764 if (rdev->ops->get_channel) {
1765 struct ieee80211_channel *chan;
1766 enum nl80211_channel_type channel_type;
1767
1768 chan = rdev->ops->get_channel(&rdev->wiphy, wdev,
1769 &channel_type);
1770 if (chan &&
1771 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1772 chan->center_freq) ||
1773 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1774 channel_type)))
1775 goto nla_put_failure;
1776 }
1777
1778 return genlmsg_end(msg, hdr);
1779
1780 nla_put_failure:
1781 genlmsg_cancel(msg, hdr);
1782 return -EMSGSIZE;
1783 }
1784
1785 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1786 {
1787 int wp_idx = 0;
1788 int if_idx = 0;
1789 int wp_start = cb->args[0];
1790 int if_start = cb->args[1];
1791 struct cfg80211_registered_device *rdev;
1792 struct wireless_dev *wdev;
1793
1794 mutex_lock(&cfg80211_mutex);
1795 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1796 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1797 continue;
1798 if (wp_idx < wp_start) {
1799 wp_idx++;
1800 continue;
1801 }
1802 if_idx = 0;
1803
1804 mutex_lock(&rdev->devlist_mtx);
1805 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1806 if (if_idx < if_start) {
1807 if_idx++;
1808 continue;
1809 }
1810 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid,
1811 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1812 rdev, wdev) < 0) {
1813 mutex_unlock(&rdev->devlist_mtx);
1814 goto out;
1815 }
1816 if_idx++;
1817 }
1818 mutex_unlock(&rdev->devlist_mtx);
1819
1820 wp_idx++;
1821 }
1822 out:
1823 mutex_unlock(&cfg80211_mutex);
1824
1825 cb->args[0] = wp_idx;
1826 cb->args[1] = if_idx;
1827
1828 return skb->len;
1829 }
1830
1831 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1832 {
1833 struct sk_buff *msg;
1834 struct cfg80211_registered_device *dev = info->user_ptr[0];
1835 struct wireless_dev *wdev = info->user_ptr[1];
1836
1837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1838 if (!msg)
1839 return -ENOMEM;
1840
1841 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
1842 dev, wdev) < 0) {
1843 nlmsg_free(msg);
1844 return -ENOBUFS;
1845 }
1846
1847 return genlmsg_reply(msg, info);
1848 }
1849
1850 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1851 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1852 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1853 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1854 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1855 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1856 };
1857
1858 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1859 {
1860 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1861 int flag;
1862
1863 *mntrflags = 0;
1864
1865 if (!nla)
1866 return -EINVAL;
1867
1868 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1869 nla, mntr_flags_policy))
1870 return -EINVAL;
1871
1872 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1873 if (flags[flag])
1874 *mntrflags |= (1<<flag);
1875
1876 return 0;
1877 }
1878
1879 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1880 struct net_device *netdev, u8 use_4addr,
1881 enum nl80211_iftype iftype)
1882 {
1883 if (!use_4addr) {
1884 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1885 return -EBUSY;
1886 return 0;
1887 }
1888
1889 switch (iftype) {
1890 case NL80211_IFTYPE_AP_VLAN:
1891 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1892 return 0;
1893 break;
1894 case NL80211_IFTYPE_STATION:
1895 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1896 return 0;
1897 break;
1898 default:
1899 break;
1900 }
1901
1902 return -EOPNOTSUPP;
1903 }
1904
1905 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1906 {
1907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1908 struct vif_params params;
1909 int err;
1910 enum nl80211_iftype otype, ntype;
1911 struct net_device *dev = info->user_ptr[1];
1912 u32 _flags, *flags = NULL;
1913 bool change = false;
1914
1915 memset(&params, 0, sizeof(params));
1916
1917 otype = ntype = dev->ieee80211_ptr->iftype;
1918
1919 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1920 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1921 if (otype != ntype)
1922 change = true;
1923 if (ntype > NL80211_IFTYPE_MAX)
1924 return -EINVAL;
1925 }
1926
1927 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1928 struct wireless_dev *wdev = dev->ieee80211_ptr;
1929
1930 if (ntype != NL80211_IFTYPE_MESH_POINT)
1931 return -EINVAL;
1932 if (netif_running(dev))
1933 return -EBUSY;
1934
1935 wdev_lock(wdev);
1936 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1937 IEEE80211_MAX_MESH_ID_LEN);
1938 wdev->mesh_id_up_len =
1939 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1940 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1941 wdev->mesh_id_up_len);
1942 wdev_unlock(wdev);
1943 }
1944
1945 if (info->attrs[NL80211_ATTR_4ADDR]) {
1946 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1947 change = true;
1948 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1949 if (err)
1950 return err;
1951 } else {
1952 params.use_4addr = -1;
1953 }
1954
1955 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1956 if (ntype != NL80211_IFTYPE_MONITOR)
1957 return -EINVAL;
1958 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1959 &_flags);
1960 if (err)
1961 return err;
1962
1963 flags = &_flags;
1964 change = true;
1965 }
1966
1967 if (change)
1968 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1969 else
1970 err = 0;
1971
1972 if (!err && params.use_4addr != -1)
1973 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1974
1975 return err;
1976 }
1977
1978 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1979 {
1980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1981 struct vif_params params;
1982 struct wireless_dev *wdev;
1983 struct sk_buff *msg;
1984 int err;
1985 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1986 u32 flags;
1987
1988 memset(&params, 0, sizeof(params));
1989
1990 if (!info->attrs[NL80211_ATTR_IFNAME])
1991 return -EINVAL;
1992
1993 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1994 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1995 if (type > NL80211_IFTYPE_MAX)
1996 return -EINVAL;
1997 }
1998
1999 if (!rdev->ops->add_virtual_intf ||
2000 !(rdev->wiphy.interface_modes & (1 << type)))
2001 return -EOPNOTSUPP;
2002
2003 if (info->attrs[NL80211_ATTR_4ADDR]) {
2004 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2005 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2006 if (err)
2007 return err;
2008 }
2009
2010 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2011 if (!msg)
2012 return -ENOMEM;
2013
2014 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2015 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2016 &flags);
2017 wdev = rdev->ops->add_virtual_intf(&rdev->wiphy,
2018 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2019 type, err ? NULL : &flags, &params);
2020 if (IS_ERR(wdev)) {
2021 nlmsg_free(msg);
2022 return PTR_ERR(wdev);
2023 }
2024
2025 switch (type) {
2026 case NL80211_IFTYPE_MESH_POINT:
2027 if (!info->attrs[NL80211_ATTR_MESH_ID])
2028 break;
2029 wdev_lock(wdev);
2030 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2031 IEEE80211_MAX_MESH_ID_LEN);
2032 wdev->mesh_id_up_len =
2033 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2034 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2035 wdev->mesh_id_up_len);
2036 wdev_unlock(wdev);
2037 break;
2038 case NL80211_IFTYPE_P2P_DEVICE:
2039 /*
2040 * P2P Device doesn't have a netdev, so doesn't go
2041 * through the netdev notifier and must be added here
2042 */
2043 mutex_init(&wdev->mtx);
2044 INIT_LIST_HEAD(&wdev->event_list);
2045 spin_lock_init(&wdev->event_lock);
2046 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2047 spin_lock_init(&wdev->mgmt_registrations_lock);
2048
2049 mutex_lock(&rdev->devlist_mtx);
2050 wdev->identifier = ++rdev->wdev_id;
2051 list_add_rcu(&wdev->list, &rdev->wdev_list);
2052 rdev->devlist_generation++;
2053 mutex_unlock(&rdev->devlist_mtx);
2054 break;
2055 default:
2056 break;
2057 }
2058
2059 if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
2060 rdev, wdev) < 0) {
2061 nlmsg_free(msg);
2062 return -ENOBUFS;
2063 }
2064
2065 return genlmsg_reply(msg, info);
2066 }
2067
2068 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2069 {
2070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2071 struct wireless_dev *wdev = info->user_ptr[1];
2072
2073 if (!rdev->ops->del_virtual_intf)
2074 return -EOPNOTSUPP;
2075
2076 /*
2077 * If we remove a wireless device without a netdev then clear
2078 * user_ptr[1] so that nl80211_post_doit won't dereference it
2079 * to check if it needs to do dev_put(). Otherwise it crashes
2080 * since the wdev has been freed, unlike with a netdev where
2081 * we need the dev_put() for the netdev to really be freed.
2082 */
2083 if (!wdev->netdev)
2084 info->user_ptr[1] = NULL;
2085
2086 return rdev->ops->del_virtual_intf(&rdev->wiphy, wdev);
2087 }
2088
2089 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2090 {
2091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2092 struct net_device *dev = info->user_ptr[1];
2093 u16 noack_map;
2094
2095 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2096 return -EINVAL;
2097
2098 if (!rdev->ops->set_noack_map)
2099 return -EOPNOTSUPP;
2100
2101 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2102
2103 return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
2104 }
2105
2106 struct get_key_cookie {
2107 struct sk_buff *msg;
2108 int error;
2109 int idx;
2110 };
2111
2112 static void get_key_callback(void *c, struct key_params *params)
2113 {
2114 struct nlattr *key;
2115 struct get_key_cookie *cookie = c;
2116
2117 if ((params->key &&
2118 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2119 params->key_len, params->key)) ||
2120 (params->seq &&
2121 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2122 params->seq_len, params->seq)) ||
2123 (params->cipher &&
2124 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2125 params->cipher)))
2126 goto nla_put_failure;
2127
2128 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2129 if (!key)
2130 goto nla_put_failure;
2131
2132 if ((params->key &&
2133 nla_put(cookie->msg, NL80211_KEY_DATA,
2134 params->key_len, params->key)) ||
2135 (params->seq &&
2136 nla_put(cookie->msg, NL80211_KEY_SEQ,
2137 params->seq_len, params->seq)) ||
2138 (params->cipher &&
2139 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2140 params->cipher)))
2141 goto nla_put_failure;
2142
2143 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2144 goto nla_put_failure;
2145
2146 nla_nest_end(cookie->msg, key);
2147
2148 return;
2149 nla_put_failure:
2150 cookie->error = 1;
2151 }
2152
2153 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2154 {
2155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2156 int err;
2157 struct net_device *dev = info->user_ptr[1];
2158 u8 key_idx = 0;
2159 const u8 *mac_addr = NULL;
2160 bool pairwise;
2161 struct get_key_cookie cookie = {
2162 .error = 0,
2163 };
2164 void *hdr;
2165 struct sk_buff *msg;
2166
2167 if (info->attrs[NL80211_ATTR_KEY_IDX])
2168 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2169
2170 if (key_idx > 5)
2171 return -EINVAL;
2172
2173 if (info->attrs[NL80211_ATTR_MAC])
2174 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2175
2176 pairwise = !!mac_addr;
2177 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2178 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2179 if (kt >= NUM_NL80211_KEYTYPES)
2180 return -EINVAL;
2181 if (kt != NL80211_KEYTYPE_GROUP &&
2182 kt != NL80211_KEYTYPE_PAIRWISE)
2183 return -EINVAL;
2184 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2185 }
2186
2187 if (!rdev->ops->get_key)
2188 return -EOPNOTSUPP;
2189
2190 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2191 if (!msg)
2192 return -ENOMEM;
2193
2194 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
2195 NL80211_CMD_NEW_KEY);
2196 if (IS_ERR(hdr))
2197 return PTR_ERR(hdr);
2198
2199 cookie.msg = msg;
2200 cookie.idx = key_idx;
2201
2202 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2203 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2204 goto nla_put_failure;
2205 if (mac_addr &&
2206 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2207 goto nla_put_failure;
2208
2209 if (pairwise && mac_addr &&
2210 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2211 return -ENOENT;
2212
2213 err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2214 mac_addr, &cookie, get_key_callback);
2215
2216 if (err)
2217 goto free_msg;
2218
2219 if (cookie.error)
2220 goto nla_put_failure;
2221
2222 genlmsg_end(msg, hdr);
2223 return genlmsg_reply(msg, info);
2224
2225 nla_put_failure:
2226 err = -ENOBUFS;
2227 free_msg:
2228 nlmsg_free(msg);
2229 return err;
2230 }
2231
2232 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2233 {
2234 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2235 struct key_parse key;
2236 int err;
2237 struct net_device *dev = info->user_ptr[1];
2238
2239 err = nl80211_parse_key(info, &key);
2240 if (err)
2241 return err;
2242
2243 if (key.idx < 0)
2244 return -EINVAL;
2245
2246 /* only support setting default key */
2247 if (!key.def && !key.defmgmt)
2248 return -EINVAL;
2249
2250 wdev_lock(dev->ieee80211_ptr);
2251
2252 if (key.def) {
2253 if (!rdev->ops->set_default_key) {
2254 err = -EOPNOTSUPP;
2255 goto out;
2256 }
2257
2258 err = nl80211_key_allowed(dev->ieee80211_ptr);
2259 if (err)
2260 goto out;
2261
2262 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2263 key.def_uni, key.def_multi);
2264
2265 if (err)
2266 goto out;
2267
2268 #ifdef CONFIG_CFG80211_WEXT
2269 dev->ieee80211_ptr->wext.default_key = key.idx;
2270 #endif
2271 } else {
2272 if (key.def_uni || !key.def_multi) {
2273 err = -EINVAL;
2274 goto out;
2275 }
2276
2277 if (!rdev->ops->set_default_mgmt_key) {
2278 err = -EOPNOTSUPP;
2279 goto out;
2280 }
2281
2282 err = nl80211_key_allowed(dev->ieee80211_ptr);
2283 if (err)
2284 goto out;
2285
2286 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2287 dev, key.idx);
2288 if (err)
2289 goto out;
2290
2291 #ifdef CONFIG_CFG80211_WEXT
2292 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2293 #endif
2294 }
2295
2296 out:
2297 wdev_unlock(dev->ieee80211_ptr);
2298
2299 return err;
2300 }
2301
2302 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2303 {
2304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2305 int err;
2306 struct net_device *dev = info->user_ptr[1];
2307 struct key_parse key;
2308 const u8 *mac_addr = NULL;
2309
2310 err = nl80211_parse_key(info, &key);
2311 if (err)
2312 return err;
2313
2314 if (!key.p.key)
2315 return -EINVAL;
2316
2317 if (info->attrs[NL80211_ATTR_MAC])
2318 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2319
2320 if (key.type == -1) {
2321 if (mac_addr)
2322 key.type = NL80211_KEYTYPE_PAIRWISE;
2323 else
2324 key.type = NL80211_KEYTYPE_GROUP;
2325 }
2326
2327 /* for now */
2328 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2329 key.type != NL80211_KEYTYPE_GROUP)
2330 return -EINVAL;
2331
2332 if (!rdev->ops->add_key)
2333 return -EOPNOTSUPP;
2334
2335 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2336 key.type == NL80211_KEYTYPE_PAIRWISE,
2337 mac_addr))
2338 return -EINVAL;
2339
2340 wdev_lock(dev->ieee80211_ptr);
2341 err = nl80211_key_allowed(dev->ieee80211_ptr);
2342 if (!err)
2343 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2344 key.type == NL80211_KEYTYPE_PAIRWISE,
2345 mac_addr, &key.p);
2346 wdev_unlock(dev->ieee80211_ptr);
2347
2348 return err;
2349 }
2350
2351 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2352 {
2353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2354 int err;
2355 struct net_device *dev = info->user_ptr[1];
2356 u8 *mac_addr = NULL;
2357 struct key_parse key;
2358
2359 err = nl80211_parse_key(info, &key);
2360 if (err)
2361 return err;
2362
2363 if (info->attrs[NL80211_ATTR_MAC])
2364 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2365
2366 if (key.type == -1) {
2367 if (mac_addr)
2368 key.type = NL80211_KEYTYPE_PAIRWISE;
2369 else
2370 key.type = NL80211_KEYTYPE_GROUP;
2371 }
2372
2373 /* for now */
2374 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2375 key.type != NL80211_KEYTYPE_GROUP)
2376 return -EINVAL;
2377
2378 if (!rdev->ops->del_key)
2379 return -EOPNOTSUPP;
2380
2381 wdev_lock(dev->ieee80211_ptr);
2382 err = nl80211_key_allowed(dev->ieee80211_ptr);
2383
2384 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2385 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2386 err = -ENOENT;
2387
2388 if (!err)
2389 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2390 key.type == NL80211_KEYTYPE_PAIRWISE,
2391 mac_addr);
2392
2393 #ifdef CONFIG_CFG80211_WEXT
2394 if (!err) {
2395 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2396 dev->ieee80211_ptr->wext.default_key = -1;
2397 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2398 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2399 }
2400 #endif
2401 wdev_unlock(dev->ieee80211_ptr);
2402
2403 return err;
2404 }
2405
2406 static int nl80211_parse_beacon(struct genl_info *info,
2407 struct cfg80211_beacon_data *bcn)
2408 {
2409 bool haveinfo = false;
2410
2411 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2412 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2413 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2414 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2415 return -EINVAL;
2416
2417 memset(bcn, 0, sizeof(*bcn));
2418
2419 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2420 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2421 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2422 if (!bcn->head_len)
2423 return -EINVAL;
2424 haveinfo = true;
2425 }
2426
2427 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2428 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2429 bcn->tail_len =
2430 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2431 haveinfo = true;
2432 }
2433
2434 if (!haveinfo)
2435 return -EINVAL;
2436
2437 if (info->attrs[NL80211_ATTR_IE]) {
2438 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2439 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2440 }
2441
2442 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2443 bcn->proberesp_ies =
2444 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2445 bcn->proberesp_ies_len =
2446 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2447 }
2448
2449 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2450 bcn->assocresp_ies =
2451 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2452 bcn->assocresp_ies_len =
2453 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2454 }
2455
2456 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2457 bcn->probe_resp =
2458 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2459 bcn->probe_resp_len =
2460 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2461 }
2462
2463 return 0;
2464 }
2465
2466 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2467 struct cfg80211_ap_settings *params)
2468 {
2469 struct wireless_dev *wdev;
2470 bool ret = false;
2471
2472 mutex_lock(&rdev->devlist_mtx);
2473
2474 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2475 if (wdev->iftype != NL80211_IFTYPE_AP &&
2476 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2477 continue;
2478
2479 if (!wdev->preset_chan)
2480 continue;
2481
2482 params->channel = wdev->preset_chan;
2483 params->channel_type = wdev->preset_chantype;
2484 ret = true;
2485 break;
2486 }
2487
2488 mutex_unlock(&rdev->devlist_mtx);
2489
2490 return ret;
2491 }
2492
2493 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2494 {
2495 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2496 struct net_device *dev = info->user_ptr[1];
2497 struct wireless_dev *wdev = dev->ieee80211_ptr;
2498 struct cfg80211_ap_settings params;
2499 int err;
2500
2501 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2502 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2503 return -EOPNOTSUPP;
2504
2505 if (!rdev->ops->start_ap)
2506 return -EOPNOTSUPP;
2507
2508 if (wdev->beacon_interval)
2509 return -EALREADY;
2510
2511 memset(&params, 0, sizeof(params));
2512
2513 /* these are required for START_AP */
2514 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2515 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2516 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2517 return -EINVAL;
2518
2519 err = nl80211_parse_beacon(info, &params.beacon);
2520 if (err)
2521 return err;
2522
2523 params.beacon_interval =
2524 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2525 params.dtim_period =
2526 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2527
2528 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2529 if (err)
2530 return err;
2531
2532 /*
2533 * In theory, some of these attributes should be required here
2534 * but since they were not used when the command was originally
2535 * added, keep them optional for old user space programs to let
2536 * them continue to work with drivers that do not need the
2537 * additional information -- drivers must check!
2538 */
2539 if (info->attrs[NL80211_ATTR_SSID]) {
2540 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2541 params.ssid_len =
2542 nla_len(info->attrs[NL80211_ATTR_SSID]);
2543 if (params.ssid_len == 0 ||
2544 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2545 return -EINVAL;
2546 }
2547
2548 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2549 params.hidden_ssid = nla_get_u32(
2550 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2551 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2552 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2553 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2554 return -EINVAL;
2555 }
2556
2557 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2558
2559 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2560 params.auth_type = nla_get_u32(
2561 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2562 if (!nl80211_valid_auth_type(params.auth_type))
2563 return -EINVAL;
2564 } else
2565 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2566
2567 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2568 NL80211_MAX_NR_CIPHER_SUITES);
2569 if (err)
2570 return err;
2571
2572 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2573 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2574 return -EOPNOTSUPP;
2575 params.inactivity_timeout = nla_get_u16(
2576 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2577 }
2578
2579 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2580 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2581
2582 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2583 !nl80211_valid_channel_type(info, &channel_type))
2584 return -EINVAL;
2585
2586 params.channel = rdev_freq_to_chan(rdev,
2587 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2588 channel_type);
2589 if (!params.channel)
2590 return -EINVAL;
2591 params.channel_type = channel_type;
2592 } else if (wdev->preset_chan) {
2593 params.channel = wdev->preset_chan;
2594 params.channel_type = wdev->preset_chantype;
2595 } else if (!nl80211_get_ap_channel(rdev, &params))
2596 return -EINVAL;
2597
2598 if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2599 params.channel_type))
2600 return -EINVAL;
2601
2602 mutex_lock(&rdev->devlist_mtx);
2603 err = cfg80211_can_use_chan(rdev, wdev, params.channel,
2604 CHAN_MODE_SHARED);
2605 mutex_unlock(&rdev->devlist_mtx);
2606
2607 if (err)
2608 return err;
2609
2610 err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2611 if (!err) {
2612 wdev->preset_chan = params.channel;
2613 wdev->preset_chantype = params.channel_type;
2614 wdev->beacon_interval = params.beacon_interval;
2615 wdev->channel = params.channel;
2616 }
2617 return err;
2618 }
2619
2620 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2621 {
2622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2623 struct net_device *dev = info->user_ptr[1];
2624 struct wireless_dev *wdev = dev->ieee80211_ptr;
2625 struct cfg80211_beacon_data params;
2626 int err;
2627
2628 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2630 return -EOPNOTSUPP;
2631
2632 if (!rdev->ops->change_beacon)
2633 return -EOPNOTSUPP;
2634
2635 if (!wdev->beacon_interval)
2636 return -EINVAL;
2637
2638 err = nl80211_parse_beacon(info, &params);
2639 if (err)
2640 return err;
2641
2642 return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2643 }
2644
2645 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2646 {
2647 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2648 struct net_device *dev = info->user_ptr[1];
2649
2650 return cfg80211_stop_ap(rdev, dev);
2651 }
2652
2653 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2654 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2655 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2656 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2657 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2658 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2659 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2660 };
2661
2662 static int parse_station_flags(struct genl_info *info,
2663 enum nl80211_iftype iftype,
2664 struct station_parameters *params)
2665 {
2666 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2667 struct nlattr *nla;
2668 int flag;
2669
2670 /*
2671 * Try parsing the new attribute first so userspace
2672 * can specify both for older kernels.
2673 */
2674 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2675 if (nla) {
2676 struct nl80211_sta_flag_update *sta_flags;
2677
2678 sta_flags = nla_data(nla);
2679 params->sta_flags_mask = sta_flags->mask;
2680 params->sta_flags_set = sta_flags->set;
2681 if ((params->sta_flags_mask |
2682 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2683 return -EINVAL;
2684 return 0;
2685 }
2686
2687 /* if present, parse the old attribute */
2688
2689 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2690 if (!nla)
2691 return 0;
2692
2693 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2694 nla, sta_flags_policy))
2695 return -EINVAL;
2696
2697 /*
2698 * Only allow certain flags for interface types so that
2699 * other attributes are silently ignored. Remember that
2700 * this is backward compatibility code with old userspace
2701 * and shouldn't be hit in other cases anyway.
2702 */
2703 switch (iftype) {
2704 case NL80211_IFTYPE_AP:
2705 case NL80211_IFTYPE_AP_VLAN:
2706 case NL80211_IFTYPE_P2P_GO:
2707 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2708 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2709 BIT(NL80211_STA_FLAG_WME) |
2710 BIT(NL80211_STA_FLAG_MFP);
2711 break;
2712 case NL80211_IFTYPE_P2P_CLIENT:
2713 case NL80211_IFTYPE_STATION:
2714 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2715 BIT(NL80211_STA_FLAG_TDLS_PEER);
2716 break;
2717 case NL80211_IFTYPE_MESH_POINT:
2718 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2719 BIT(NL80211_STA_FLAG_MFP) |
2720 BIT(NL80211_STA_FLAG_AUTHORIZED);
2721 default:
2722 return -EINVAL;
2723 }
2724
2725 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2726 if (flags[flag]) {
2727 params->sta_flags_set |= (1<<flag);
2728
2729 /* no longer support new API additions in old API */
2730 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2731 return -EINVAL;
2732 }
2733 }
2734
2735 return 0;
2736 }
2737
2738 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2739 int attr)
2740 {
2741 struct nlattr *rate;
2742 u32 bitrate;
2743 u16 bitrate_compat;
2744
2745 rate = nla_nest_start(msg, attr);
2746 if (!rate)
2747 goto nla_put_failure;
2748
2749 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2750 bitrate = cfg80211_calculate_bitrate(info);
2751 /* report 16-bit bitrate only if we can */
2752 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2753 if ((bitrate > 0 &&
2754 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) ||
2755 (bitrate_compat > 0 &&
2756 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) ||
2757 ((info->flags & RATE_INFO_FLAGS_MCS) &&
2758 nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2759 ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2760 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2761 ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2762 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2763 goto nla_put_failure;
2764
2765 nla_nest_end(msg, rate);
2766 return true;
2767
2768 nla_put_failure:
2769 return false;
2770 }
2771
2772 static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
2773 int flags,
2774 struct cfg80211_registered_device *rdev,
2775 struct net_device *dev,
2776 const u8 *mac_addr, struct station_info *sinfo)
2777 {
2778 void *hdr;
2779 struct nlattr *sinfoattr, *bss_param;
2780
2781 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
2782 if (!hdr)
2783 return -1;
2784
2785 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2786 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2787 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2788 goto nla_put_failure;
2789
2790 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2791 if (!sinfoattr)
2792 goto nla_put_failure;
2793 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2794 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2795 sinfo->connected_time))
2796 goto nla_put_failure;
2797 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2798 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2799 sinfo->inactive_time))
2800 goto nla_put_failure;
2801 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2802 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2803 sinfo->rx_bytes))
2804 goto nla_put_failure;
2805 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2806 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2807 sinfo->tx_bytes))
2808 goto nla_put_failure;
2809 if ((sinfo->filled & STATION_INFO_LLID) &&
2810 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2811 goto nla_put_failure;
2812 if ((sinfo->filled & STATION_INFO_PLID) &&
2813 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2814 goto nla_put_failure;
2815 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2816 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2817 sinfo->plink_state))
2818 goto nla_put_failure;
2819 switch (rdev->wiphy.signal_type) {
2820 case CFG80211_SIGNAL_TYPE_MBM:
2821 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2822 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2823 sinfo->signal))
2824 goto nla_put_failure;
2825 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2826 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2827 sinfo->signal_avg))
2828 goto nla_put_failure;
2829 break;
2830 default:
2831 break;
2832 }
2833 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2834 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2835 NL80211_STA_INFO_TX_BITRATE))
2836 goto nla_put_failure;
2837 }
2838 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2839 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2840 NL80211_STA_INFO_RX_BITRATE))
2841 goto nla_put_failure;
2842 }
2843 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2844 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2845 sinfo->rx_packets))
2846 goto nla_put_failure;
2847 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2848 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2849 sinfo->tx_packets))
2850 goto nla_put_failure;
2851 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2852 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2853 sinfo->tx_retries))
2854 goto nla_put_failure;
2855 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2856 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2857 sinfo->tx_failed))
2858 goto nla_put_failure;
2859 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2860 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2861 sinfo->beacon_loss_count))
2862 goto nla_put_failure;
2863 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2864 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2865 if (!bss_param)
2866 goto nla_put_failure;
2867
2868 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2869 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2870 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2871 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2872 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2873 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2874 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2875 sinfo->bss_param.dtim_period) ||
2876 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2877 sinfo->bss_param.beacon_interval))
2878 goto nla_put_failure;
2879
2880 nla_nest_end(msg, bss_param);
2881 }
2882 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2883 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2884 sizeof(struct nl80211_sta_flag_update),
2885 &sinfo->sta_flags))
2886 goto nla_put_failure;
2887 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2888 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2889 sinfo->t_offset))
2890 goto nla_put_failure;
2891 nla_nest_end(msg, sinfoattr);
2892
2893 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2894 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2895 sinfo->assoc_req_ies))
2896 goto nla_put_failure;
2897
2898 return genlmsg_end(msg, hdr);
2899
2900 nla_put_failure:
2901 genlmsg_cancel(msg, hdr);
2902 return -EMSGSIZE;
2903 }
2904
2905 static int nl80211_dump_station(struct sk_buff *skb,
2906 struct netlink_callback *cb)
2907 {
2908 struct station_info sinfo;
2909 struct cfg80211_registered_device *dev;
2910 struct net_device *netdev;
2911 u8 mac_addr[ETH_ALEN];
2912 int sta_idx = cb->args[1];
2913 int err;
2914
2915 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2916 if (err)
2917 return err;
2918
2919 if (!dev->ops->dump_station) {
2920 err = -EOPNOTSUPP;
2921 goto out_err;
2922 }
2923
2924 while (1) {
2925 memset(&sinfo, 0, sizeof(sinfo));
2926 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2927 mac_addr, &sinfo);
2928 if (err == -ENOENT)
2929 break;
2930 if (err)
2931 goto out_err;
2932
2933 if (nl80211_send_station(skb,
2934 NETLINK_CB(cb->skb).pid,
2935 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2936 dev, netdev, mac_addr,
2937 &sinfo) < 0)
2938 goto out;
2939
2940 sta_idx++;
2941 }
2942
2943
2944 out:
2945 cb->args[1] = sta_idx;
2946 err = skb->len;
2947 out_err:
2948 nl80211_finish_netdev_dump(dev);
2949
2950 return err;
2951 }
2952
2953 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2954 {
2955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2956 struct net_device *dev = info->user_ptr[1];
2957 struct station_info sinfo;
2958 struct sk_buff *msg;
2959 u8 *mac_addr = NULL;
2960 int err;
2961
2962 memset(&sinfo, 0, sizeof(sinfo));
2963
2964 if (!info->attrs[NL80211_ATTR_MAC])
2965 return -EINVAL;
2966
2967 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2968
2969 if (!rdev->ops->get_station)
2970 return -EOPNOTSUPP;
2971
2972 err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
2973 if (err)
2974 return err;
2975
2976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2977 if (!msg)
2978 return -ENOMEM;
2979
2980 if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
2981 rdev, dev, mac_addr, &sinfo) < 0) {
2982 nlmsg_free(msg);
2983 return -ENOBUFS;
2984 }
2985
2986 return genlmsg_reply(msg, info);
2987 }
2988
2989 /*
2990 * Get vlan interface making sure it is running and on the right wiphy.
2991 */
2992 static struct net_device *get_vlan(struct genl_info *info,
2993 struct cfg80211_registered_device *rdev)
2994 {
2995 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
2996 struct net_device *v;
2997 int ret;
2998
2999 if (!vlanattr)
3000 return NULL;
3001
3002 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3003 if (!v)
3004 return ERR_PTR(-ENODEV);
3005
3006 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3007 ret = -EINVAL;
3008 goto error;
3009 }
3010
3011 if (!netif_running(v)) {
3012 ret = -ENETDOWN;
3013 goto error;
3014 }
3015
3016 return v;
3017 error:
3018 dev_put(v);
3019 return ERR_PTR(ret);
3020 }
3021
3022 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3023 {
3024 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3025 int err;
3026 struct net_device *dev = info->user_ptr[1];
3027 struct station_parameters params;
3028 u8 *mac_addr = NULL;
3029
3030 memset(&params, 0, sizeof(params));
3031
3032 params.listen_interval = -1;
3033 params.plink_state = -1;
3034
3035 if (info->attrs[NL80211_ATTR_STA_AID])
3036 return -EINVAL;
3037
3038 if (!info->attrs[NL80211_ATTR_MAC])
3039 return -EINVAL;
3040
3041 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3042
3043 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3044 params.supported_rates =
3045 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3046 params.supported_rates_len =
3047 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3048 }
3049
3050 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3051 params.listen_interval =
3052 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3053
3054 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3055 params.ht_capa =
3056 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3057
3058 if (!rdev->ops->change_station)
3059 return -EOPNOTSUPP;
3060
3061 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3062 return -EINVAL;
3063
3064 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3065 params.plink_action =
3066 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3067
3068 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3069 params.plink_state =
3070 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3071
3072 switch (dev->ieee80211_ptr->iftype) {
3073 case NL80211_IFTYPE_AP:
3074 case NL80211_IFTYPE_AP_VLAN:
3075 case NL80211_IFTYPE_P2P_GO:
3076 /* disallow mesh-specific things */
3077 if (params.plink_action)
3078 return -EINVAL;
3079
3080 /* TDLS can't be set, ... */
3081 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3082 return -EINVAL;
3083 /*
3084 * ... but don't bother the driver with it. This works around
3085 * a hostapd/wpa_supplicant issue -- it always includes the
3086 * TLDS_PEER flag in the mask even for AP mode.
3087 */
3088 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3089
3090 /* accept only the listed bits */
3091 if (params.sta_flags_mask &
3092 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3093 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3094 BIT(NL80211_STA_FLAG_WME) |
3095 BIT(NL80211_STA_FLAG_MFP)))
3096 return -EINVAL;
3097
3098 /* must be last in here for error handling */
3099 params.vlan = get_vlan(info, rdev);
3100 if (IS_ERR(params.vlan))
3101 return PTR_ERR(params.vlan);
3102 break;
3103 case NL80211_IFTYPE_P2P_CLIENT:
3104 case NL80211_IFTYPE_STATION:
3105 /*
3106 * Don't allow userspace to change the TDLS_PEER flag,
3107 * but silently ignore attempts to change it since we
3108 * don't have state here to verify that it doesn't try
3109 * to change the flag.
3110 */
3111 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3112 /* fall through */
3113 case NL80211_IFTYPE_ADHOC:
3114 /* disallow things sta doesn't support */
3115 if (params.plink_action)
3116 return -EINVAL;
3117 if (params.ht_capa)
3118 return -EINVAL;
3119 if (params.listen_interval >= 0)
3120 return -EINVAL;
3121 /* reject any changes other than AUTHORIZED */
3122 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3123 return -EINVAL;
3124 break;
3125 case NL80211_IFTYPE_MESH_POINT:
3126 /* disallow things mesh doesn't support */
3127 if (params.vlan)
3128 return -EINVAL;
3129 if (params.ht_capa)
3130 return -EINVAL;
3131 if (params.listen_interval >= 0)
3132 return -EINVAL;
3133 /*
3134 * No special handling for TDLS here -- the userspace
3135 * mesh code doesn't have this bug.
3136 */
3137 if (params.sta_flags_mask &
3138 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3139 BIT(NL80211_STA_FLAG_MFP) |
3140 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3141 return -EINVAL;
3142 break;
3143 default:
3144 return -EOPNOTSUPP;
3145 }
3146
3147 /* be aware of params.vlan when changing code here */
3148
3149 err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
3150
3151 if (params.vlan)
3152 dev_put(params.vlan);
3153
3154 return err;
3155 }
3156
3157 static struct nla_policy
3158 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3159 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3160 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3161 };
3162
3163 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3164 {
3165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3166 int err;
3167 struct net_device *dev = info->user_ptr[1];
3168 struct station_parameters params;
3169 u8 *mac_addr = NULL;
3170
3171 memset(&params, 0, sizeof(params));
3172
3173 if (!info->attrs[NL80211_ATTR_MAC])
3174 return -EINVAL;
3175
3176 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3177 return -EINVAL;
3178
3179 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3180 return -EINVAL;
3181
3182 if (!info->attrs[NL80211_ATTR_STA_AID])
3183 return -EINVAL;
3184
3185 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3186 params.supported_rates =
3187 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3188 params.supported_rates_len =
3189 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3190 params.listen_interval =
3191 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3192
3193 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3194 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3195 return -EINVAL;
3196
3197 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3198 params.ht_capa =
3199 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3200
3201 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3202 params.plink_action =
3203 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3204
3205 if (!rdev->ops->add_station)
3206 return -EOPNOTSUPP;
3207
3208 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3209 return -EINVAL;
3210
3211 switch (dev->ieee80211_ptr->iftype) {
3212 case NL80211_IFTYPE_AP:
3213 case NL80211_IFTYPE_AP_VLAN:
3214 case NL80211_IFTYPE_P2P_GO:
3215 /* parse WME attributes if sta is WME capable */
3216 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3217 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3218 info->attrs[NL80211_ATTR_STA_WME]) {
3219 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3220 struct nlattr *nla;
3221
3222 nla = info->attrs[NL80211_ATTR_STA_WME];
3223 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3224 nl80211_sta_wme_policy);
3225 if (err)
3226 return err;
3227
3228 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3229 params.uapsd_queues =
3230 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3231 if (params.uapsd_queues &
3232 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3233 return -EINVAL;
3234
3235 if (tb[NL80211_STA_WME_MAX_SP])
3236 params.max_sp =
3237 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3238
3239 if (params.max_sp &
3240 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3241 return -EINVAL;
3242
3243 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3244 }
3245 /* TDLS peers cannot be added */
3246 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3247 return -EINVAL;
3248 /* but don't bother the driver with it */
3249 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3250
3251 /* must be last in here for error handling */
3252 params.vlan = get_vlan(info, rdev);
3253 if (IS_ERR(params.vlan))
3254 return PTR_ERR(params.vlan);
3255 break;
3256 case NL80211_IFTYPE_MESH_POINT:
3257 /* TDLS peers cannot be added */
3258 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3259 return -EINVAL;
3260 break;
3261 case NL80211_IFTYPE_STATION:
3262 /* Only TDLS peers can be added */
3263 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3264 return -EINVAL;
3265 /* Can only add if TDLS ... */
3266 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3267 return -EOPNOTSUPP;
3268 /* ... with external setup is supported */
3269 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3270 return -EOPNOTSUPP;
3271 break;
3272 default:
3273 return -EOPNOTSUPP;
3274 }
3275
3276 /* be aware of params.vlan when changing code here */
3277
3278 err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3279
3280 if (params.vlan)
3281 dev_put(params.vlan);
3282 return err;
3283 }
3284
3285 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3286 {
3287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3288 struct net_device *dev = info->user_ptr[1];
3289 u8 *mac_addr = NULL;
3290
3291 if (info->attrs[NL80211_ATTR_MAC])
3292 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3293
3294 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3295 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3296 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3297 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3298 return -EINVAL;
3299
3300 if (!rdev->ops->del_station)
3301 return -EOPNOTSUPP;
3302
3303 return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3304 }
3305
3306 static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
3307 int flags, struct net_device *dev,
3308 u8 *dst, u8 *next_hop,
3309 struct mpath_info *pinfo)
3310 {
3311 void *hdr;
3312 struct nlattr *pinfoattr;
3313
3314 hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
3315 if (!hdr)
3316 return -1;
3317
3318 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3319 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3320 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3321 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3322 goto nla_put_failure;
3323
3324 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3325 if (!pinfoattr)
3326 goto nla_put_failure;
3327 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3328 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3329 pinfo->frame_qlen))
3330 goto nla_put_failure;
3331 if (((pinfo->filled & MPATH_INFO_SN) &&
3332 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3333 ((pinfo->filled & MPATH_INFO_METRIC) &&
3334 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3335 pinfo->metric)) ||
3336 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3337 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3338 pinfo->exptime)) ||
3339 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3340 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3341 pinfo->flags)) ||
3342 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3343 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3344 pinfo->discovery_timeout)) ||
3345 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3346 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3347 pinfo->discovery_retries)))
3348 goto nla_put_failure;
3349
3350 nla_nest_end(msg, pinfoattr);
3351
3352 return genlmsg_end(msg, hdr);
3353
3354 nla_put_failure:
3355 genlmsg_cancel(msg, hdr);
3356 return -EMSGSIZE;
3357 }
3358
3359 static int nl80211_dump_mpath(struct sk_buff *skb,
3360 struct netlink_callback *cb)
3361 {
3362 struct mpath_info pinfo;
3363 struct cfg80211_registered_device *dev;
3364 struct net_device *netdev;
3365 u8 dst[ETH_ALEN];
3366 u8 next_hop[ETH_ALEN];
3367 int path_idx = cb->args[1];
3368 int err;
3369
3370 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3371 if (err)
3372 return err;
3373
3374 if (!dev->ops->dump_mpath) {
3375 err = -EOPNOTSUPP;
3376 goto out_err;
3377 }
3378
3379 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3380 err = -EOPNOTSUPP;
3381 goto out_err;
3382 }
3383
3384 while (1) {
3385 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3386 dst, next_hop, &pinfo);
3387 if (err == -ENOENT)
3388 break;
3389 if (err)
3390 goto out_err;
3391
3392 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).pid,
3393 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3394 netdev, dst, next_hop,
3395 &pinfo) < 0)
3396 goto out;
3397
3398 path_idx++;
3399 }
3400
3401
3402 out:
3403 cb->args[1] = path_idx;
3404 err = skb->len;
3405 out_err:
3406 nl80211_finish_netdev_dump(dev);
3407 return err;
3408 }
3409
3410 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3411 {
3412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3413 int err;
3414 struct net_device *dev = info->user_ptr[1];
3415 struct mpath_info pinfo;
3416 struct sk_buff *msg;
3417 u8 *dst = NULL;
3418 u8 next_hop[ETH_ALEN];
3419
3420 memset(&pinfo, 0, sizeof(pinfo));
3421
3422 if (!info->attrs[NL80211_ATTR_MAC])
3423 return -EINVAL;
3424
3425 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3426
3427 if (!rdev->ops->get_mpath)
3428 return -EOPNOTSUPP;
3429
3430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3431 return -EOPNOTSUPP;
3432
3433 err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3434 if (err)
3435 return err;
3436
3437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3438 if (!msg)
3439 return -ENOMEM;
3440
3441 if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
3442 dev, dst, next_hop, &pinfo) < 0) {
3443 nlmsg_free(msg);
3444 return -ENOBUFS;
3445 }
3446
3447 return genlmsg_reply(msg, info);
3448 }
3449
3450 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3451 {
3452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3453 struct net_device *dev = info->user_ptr[1];
3454 u8 *dst = NULL;
3455 u8 *next_hop = NULL;
3456
3457 if (!info->attrs[NL80211_ATTR_MAC])
3458 return -EINVAL;
3459
3460 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3461 return -EINVAL;
3462
3463 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3464 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3465
3466 if (!rdev->ops->change_mpath)
3467 return -EOPNOTSUPP;
3468
3469 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3470 return -EOPNOTSUPP;
3471
3472 return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3473 }
3474
3475 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3476 {
3477 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3478 struct net_device *dev = info->user_ptr[1];
3479 u8 *dst = NULL;
3480 u8 *next_hop = NULL;
3481
3482 if (!info->attrs[NL80211_ATTR_MAC])
3483 return -EINVAL;
3484
3485 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3486 return -EINVAL;
3487
3488 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3489 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3490
3491 if (!rdev->ops->add_mpath)
3492 return -EOPNOTSUPP;
3493
3494 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3495 return -EOPNOTSUPP;
3496
3497 return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3498 }
3499
3500 static int nl80211_del_mpath(struct sk_buff *skb, 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 u8 *dst = NULL;
3505
3506 if (info->attrs[NL80211_ATTR_MAC])
3507 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3508
3509 if (!rdev->ops->del_mpath)
3510 return -EOPNOTSUPP;
3511
3512 return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3513 }
3514
3515 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3516 {
3517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3518 struct net_device *dev = info->user_ptr[1];
3519 struct bss_parameters params;
3520
3521 memset(&params, 0, sizeof(params));
3522 /* default to not changing parameters */
3523 params.use_cts_prot = -1;
3524 params.use_short_preamble = -1;
3525 params.use_short_slot_time = -1;
3526 params.ap_isolate = -1;
3527 params.ht_opmode = -1;
3528
3529 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3530 params.use_cts_prot =
3531 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3532 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3533 params.use_short_preamble =
3534 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3535 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3536 params.use_short_slot_time =
3537 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3538 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3539 params.basic_rates =
3540 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3541 params.basic_rates_len =
3542 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3543 }
3544 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3545 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3546 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3547 params.ht_opmode =
3548 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3549
3550 if (!rdev->ops->change_bss)
3551 return -EOPNOTSUPP;
3552
3553 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3554 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3555 return -EOPNOTSUPP;
3556
3557 return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3558 }
3559
3560 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3561 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3562 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3563 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3564 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3565 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3566 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3567 };
3568
3569 static int parse_reg_rule(struct nlattr *tb[],
3570 struct ieee80211_reg_rule *reg_rule)
3571 {
3572 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3573 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3574
3575 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3576 return -EINVAL;
3577 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3578 return -EINVAL;
3579 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3580 return -EINVAL;
3581 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3582 return -EINVAL;
3583 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3584 return -EINVAL;
3585
3586 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3587
3588 freq_range->start_freq_khz =
3589 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3590 freq_range->end_freq_khz =
3591 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3592 freq_range->max_bandwidth_khz =
3593 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3594
3595 power_rule->max_eirp =
3596 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3597
3598 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3599 power_rule->max_antenna_gain =
3600 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3601
3602 return 0;
3603 }
3604
3605 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3606 {
3607 int r;
3608 char *data = NULL;
3609 enum nl80211_user_reg_hint_type user_reg_hint_type;
3610
3611 /*
3612 * You should only get this when cfg80211 hasn't yet initialized
3613 * completely when built-in to the kernel right between the time
3614 * window between nl80211_init() and regulatory_init(), if that is
3615 * even possible.
3616 */
3617 mutex_lock(&cfg80211_mutex);
3618 if (unlikely(!cfg80211_regdomain)) {
3619 mutex_unlock(&cfg80211_mutex);
3620 return -EINPROGRESS;
3621 }
3622 mutex_unlock(&cfg80211_mutex);
3623
3624 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3625 return -EINVAL;
3626
3627 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3628
3629 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3630 user_reg_hint_type =
3631 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3632 else
3633 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3634
3635 switch (user_reg_hint_type) {
3636 case NL80211_USER_REG_HINT_USER:
3637 case NL80211_USER_REG_HINT_CELL_BASE:
3638 break;
3639 default:
3640 return -EINVAL;
3641 }
3642
3643 r = regulatory_hint_user(data, user_reg_hint_type);
3644
3645 return r;
3646 }
3647
3648 static int nl80211_get_mesh_config(struct sk_buff *skb,
3649 struct genl_info *info)
3650 {
3651 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3652 struct net_device *dev = info->user_ptr[1];
3653 struct wireless_dev *wdev = dev->ieee80211_ptr;
3654 struct mesh_config cur_params;
3655 int err = 0;
3656 void *hdr;
3657 struct nlattr *pinfoattr;
3658 struct sk_buff *msg;
3659
3660 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3661 return -EOPNOTSUPP;
3662
3663 if (!rdev->ops->get_mesh_config)
3664 return -EOPNOTSUPP;
3665
3666 wdev_lock(wdev);
3667 /* If not connected, get default parameters */
3668 if (!wdev->mesh_id_len)
3669 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3670 else
3671 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3672 &cur_params);
3673 wdev_unlock(wdev);
3674
3675 if (err)
3676 return err;
3677
3678 /* Draw up a netlink message to send back */
3679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3680 if (!msg)
3681 return -ENOMEM;
3682 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
3683 NL80211_CMD_GET_MESH_CONFIG);
3684 if (!hdr)
3685 goto out;
3686 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3687 if (!pinfoattr)
3688 goto nla_put_failure;
3689 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3690 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3691 cur_params.dot11MeshRetryTimeout) ||
3692 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3693 cur_params.dot11MeshConfirmTimeout) ||
3694 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3695 cur_params.dot11MeshHoldingTimeout) ||
3696 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3697 cur_params.dot11MeshMaxPeerLinks) ||
3698 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3699 cur_params.dot11MeshMaxRetries) ||
3700 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3701 cur_params.dot11MeshTTL) ||
3702 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3703 cur_params.element_ttl) ||
3704 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3705 cur_params.auto_open_plinks) ||
3706 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3707 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3708 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3709 cur_params.dot11MeshHWMPmaxPREQretries) ||
3710 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3711 cur_params.path_refresh_time) ||
3712 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3713 cur_params.min_discovery_timeout) ||
3714 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3715 cur_params.dot11MeshHWMPactivePathTimeout) ||
3716 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3717 cur_params.dot11MeshHWMPpreqMinInterval) ||
3718 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3719 cur_params.dot11MeshHWMPperrMinInterval) ||
3720 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3721 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3722 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3723 cur_params.dot11MeshHWMPRootMode) ||
3724 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3725 cur_params.dot11MeshHWMPRannInterval) ||
3726 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3727 cur_params.dot11MeshGateAnnouncementProtocol) ||
3728 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3729 cur_params.dot11MeshForwarding) ||
3730 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3731 cur_params.rssi_threshold) ||
3732 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3733 cur_params.ht_opmode) ||
3734 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3735 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3736 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3737 cur_params.dot11MeshHWMProotInterval) ||
3738 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3739 cur_params.dot11MeshHWMPconfirmationInterval))
3740 goto nla_put_failure;
3741 nla_nest_end(msg, pinfoattr);
3742 genlmsg_end(msg, hdr);
3743 return genlmsg_reply(msg, info);
3744
3745 nla_put_failure:
3746 genlmsg_cancel(msg, hdr);
3747 out:
3748 nlmsg_free(msg);
3749 return -ENOBUFS;
3750 }
3751
3752 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3753 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3754 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3755 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3756 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3757 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3758 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3759 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3760 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3761 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3762 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3763 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3764 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3765 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3766 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3767 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3768 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3769 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3770 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3771 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3772 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3773 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3774 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3775 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3776 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3777 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3778 };
3779
3780 static const struct nla_policy
3781 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3782 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3783 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3784 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3785 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3786 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3787 .len = IEEE80211_MAX_DATA_LEN },
3788 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3789 };
3790
3791 static int nl80211_parse_mesh_config(struct genl_info *info,
3792 struct mesh_config *cfg,
3793 u32 *mask_out)
3794 {
3795 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3796 u32 mask = 0;
3797
3798 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3799 do {\
3800 if (table[attr_num]) {\
3801 cfg->param = nla_fn(table[attr_num]); \
3802 mask |= (1 << (attr_num - 1)); \
3803 } \
3804 } while (0);\
3805
3806
3807 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3808 return -EINVAL;
3809 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3810 info->attrs[NL80211_ATTR_MESH_CONFIG],
3811 nl80211_meshconf_params_policy))
3812 return -EINVAL;
3813
3814 /* This makes sure that there aren't more than 32 mesh config
3815 * parameters (otherwise our bitfield scheme would not work.) */
3816 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3817
3818 /* Fill in the params struct */
3819 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3820 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3821 nla_get_u16);
3822 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3823 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3824 nla_get_u16);
3825 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3826 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3827 nla_get_u16);
3828 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3829 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3830 nla_get_u16);
3831 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3832 mask, NL80211_MESHCONF_MAX_RETRIES,
3833 nla_get_u8);
3834 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3835 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3837 mask, NL80211_MESHCONF_ELEMENT_TTL,
3838 nla_get_u8);
3839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3840 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3841 nla_get_u8);
3842 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3843 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3844 nla_get_u32);
3845 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3846 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3847 nla_get_u8);
3848 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3849 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3850 nla_get_u32);
3851 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3852 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3853 nla_get_u16);
3854 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3855 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3856 nla_get_u32);
3857 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3858 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3859 nla_get_u16);
3860 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3861 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3862 nla_get_u16);
3863 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3864 dot11MeshHWMPnetDiameterTraversalTime, mask,
3865 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3866 nla_get_u16);
3867 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3868 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3870 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3871 nla_get_u16);
3872 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3873 dot11MeshGateAnnouncementProtocol, mask,
3874 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3875 nla_get_u8);
3876 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3877 mask, NL80211_MESHCONF_FORWARDING,
3878 nla_get_u8);
3879 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3880 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3881 nla_get_u32);
3882 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3883 mask, NL80211_MESHCONF_HT_OPMODE,
3884 nla_get_u16);
3885 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3886 mask,
3887 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3888 nla_get_u32);
3889 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3890 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3891 nla_get_u16);
3892 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3893 dot11MeshHWMPconfirmationInterval, mask,
3894 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3895 nla_get_u16);
3896 if (mask_out)
3897 *mask_out = mask;
3898
3899 return 0;
3900
3901 #undef FILL_IN_MESH_PARAM_IF_SET
3902 }
3903
3904 static int nl80211_parse_mesh_setup(struct genl_info *info,
3905 struct mesh_setup *setup)
3906 {
3907 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3908
3909 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3910 return -EINVAL;
3911 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3912 info->attrs[NL80211_ATTR_MESH_SETUP],
3913 nl80211_mesh_setup_params_policy))
3914 return -EINVAL;
3915
3916 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3917 setup->sync_method =
3918 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3919 IEEE80211_SYNC_METHOD_VENDOR :
3920 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3921
3922 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3923 setup->path_sel_proto =
3924 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3925 IEEE80211_PATH_PROTOCOL_VENDOR :
3926 IEEE80211_PATH_PROTOCOL_HWMP;
3927
3928 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3929 setup->path_metric =
3930 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3931 IEEE80211_PATH_METRIC_VENDOR :
3932 IEEE80211_PATH_METRIC_AIRTIME;
3933
3934
3935 if (tb[NL80211_MESH_SETUP_IE]) {
3936 struct nlattr *ieattr =
3937 tb[NL80211_MESH_SETUP_IE];
3938 if (!is_valid_ie_attr(ieattr))
3939 return -EINVAL;
3940 setup->ie = nla_data(ieattr);
3941 setup->ie_len = nla_len(ieattr);
3942 }
3943 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3944 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3945
3946 return 0;
3947 }
3948
3949 static int nl80211_update_mesh_config(struct sk_buff *skb,
3950 struct genl_info *info)
3951 {
3952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3953 struct net_device *dev = info->user_ptr[1];
3954 struct wireless_dev *wdev = dev->ieee80211_ptr;
3955 struct mesh_config cfg;
3956 u32 mask;
3957 int err;
3958
3959 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3960 return -EOPNOTSUPP;
3961
3962 if (!rdev->ops->update_mesh_config)
3963 return -EOPNOTSUPP;
3964
3965 err = nl80211_parse_mesh_config(info, &cfg, &mask);
3966 if (err)
3967 return err;
3968
3969 wdev_lock(wdev);
3970 if (!wdev->mesh_id_len)
3971 err = -ENOLINK;
3972
3973 if (!err)
3974 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
3975 mask, &cfg);
3976
3977 wdev_unlock(wdev);
3978
3979 return err;
3980 }
3981
3982 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
3983 {
3984 struct sk_buff *msg;
3985 void *hdr = NULL;
3986 struct nlattr *nl_reg_rules;
3987 unsigned int i;
3988 int err = -EINVAL;
3989
3990 mutex_lock(&cfg80211_mutex);
3991
3992 if (!cfg80211_regdomain)
3993 goto out;
3994
3995 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3996 if (!msg) {
3997 err = -ENOBUFS;
3998 goto out;
3999 }
4000
4001 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
4002 NL80211_CMD_GET_REG);
4003 if (!hdr)
4004 goto put_failure;
4005
4006 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4007 cfg80211_regdomain->alpha2) ||
4008 (cfg80211_regdomain->dfs_region &&
4009 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4010 cfg80211_regdomain->dfs_region)))
4011 goto nla_put_failure;
4012
4013 if (reg_last_request_cell_base() &&
4014 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4015 NL80211_USER_REG_HINT_CELL_BASE))
4016 goto nla_put_failure;
4017
4018 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4019 if (!nl_reg_rules)
4020 goto nla_put_failure;
4021
4022 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4023 struct nlattr *nl_reg_rule;
4024 const struct ieee80211_reg_rule *reg_rule;
4025 const struct ieee80211_freq_range *freq_range;
4026 const struct ieee80211_power_rule *power_rule;
4027
4028 reg_rule = &cfg80211_regdomain->reg_rules[i];
4029 freq_range = &reg_rule->freq_range;
4030 power_rule = &reg_rule->power_rule;
4031
4032 nl_reg_rule = nla_nest_start(msg, i);
4033 if (!nl_reg_rule)
4034 goto nla_put_failure;
4035
4036 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4037 reg_rule->flags) ||
4038 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4039 freq_range->start_freq_khz) ||
4040 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4041 freq_range->end_freq_khz) ||
4042 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4043 freq_range->max_bandwidth_khz) ||
4044 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4045 power_rule->max_antenna_gain) ||
4046 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4047 power_rule->max_eirp))
4048 goto nla_put_failure;
4049
4050 nla_nest_end(msg, nl_reg_rule);
4051 }
4052
4053 nla_nest_end(msg, nl_reg_rules);
4054
4055 genlmsg_end(msg, hdr);
4056 err = genlmsg_reply(msg, info);
4057 goto out;
4058
4059 nla_put_failure:
4060 genlmsg_cancel(msg, hdr);
4061 put_failure:
4062 nlmsg_free(msg);
4063 err = -EMSGSIZE;
4064 out:
4065 mutex_unlock(&cfg80211_mutex);
4066 return err;
4067 }
4068
4069 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4070 {
4071 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4072 struct nlattr *nl_reg_rule;
4073 char *alpha2 = NULL;
4074 int rem_reg_rules = 0, r = 0;
4075 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4076 u8 dfs_region = 0;
4077 struct ieee80211_regdomain *rd = NULL;
4078
4079 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4080 return -EINVAL;
4081
4082 if (!info->attrs[NL80211_ATTR_REG_RULES])
4083 return -EINVAL;
4084
4085 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4086
4087 if (info->attrs[NL80211_ATTR_DFS_REGION])
4088 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4089
4090 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4091 rem_reg_rules) {
4092 num_rules++;
4093 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4094 return -EINVAL;
4095 }
4096
4097 mutex_lock(&cfg80211_mutex);
4098
4099 if (!reg_is_valid_request(alpha2)) {
4100 r = -EINVAL;
4101 goto bad_reg;
4102 }
4103
4104 size_of_regd = sizeof(struct ieee80211_regdomain) +
4105 (num_rules * sizeof(struct ieee80211_reg_rule));
4106
4107 rd = kzalloc(size_of_regd, GFP_KERNEL);
4108 if (!rd) {
4109 r = -ENOMEM;
4110 goto bad_reg;
4111 }
4112
4113 rd->n_reg_rules = num_rules;
4114 rd->alpha2[0] = alpha2[0];
4115 rd->alpha2[1] = alpha2[1];
4116
4117 /*
4118 * Disable DFS master mode if the DFS region was
4119 * not supported or known on this kernel.
4120 */
4121 if (reg_supported_dfs_region(dfs_region))
4122 rd->dfs_region = dfs_region;
4123
4124 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4125 rem_reg_rules) {
4126 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4127 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4128 reg_rule_policy);
4129 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4130 if (r)
4131 goto bad_reg;
4132
4133 rule_idx++;
4134
4135 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4136 r = -EINVAL;
4137 goto bad_reg;
4138 }
4139 }
4140
4141 BUG_ON(rule_idx != num_rules);
4142
4143 r = set_regdom(rd);
4144
4145 mutex_unlock(&cfg80211_mutex);
4146
4147 return r;
4148
4149 bad_reg:
4150 mutex_unlock(&cfg80211_mutex);
4151 kfree(rd);
4152 return r;
4153 }
4154
4155 static int validate_scan_freqs(struct nlattr *freqs)
4156 {
4157 struct nlattr *attr1, *attr2;
4158 int n_channels = 0, tmp1, tmp2;
4159
4160 nla_for_each_nested(attr1, freqs, tmp1) {
4161 n_channels++;
4162 /*
4163 * Some hardware has a limited channel list for
4164 * scanning, and it is pretty much nonsensical
4165 * to scan for a channel twice, so disallow that
4166 * and don't require drivers to check that the
4167 * channel list they get isn't longer than what
4168 * they can scan, as long as they can scan all
4169 * the channels they registered at once.
4170 */
4171 nla_for_each_nested(attr2, freqs, tmp2)
4172 if (attr1 != attr2 &&
4173 nla_get_u32(attr1) == nla_get_u32(attr2))
4174 return 0;
4175 }
4176
4177 return n_channels;
4178 }
4179
4180 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4181 {
4182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4183 struct wireless_dev *wdev = info->user_ptr[1];
4184 struct cfg80211_scan_request *request;
4185 struct nlattr *attr;
4186 struct wiphy *wiphy;
4187 int err, tmp, n_ssids = 0, n_channels, i;
4188 size_t ie_len;
4189
4190 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4191 return -EINVAL;
4192
4193 wiphy = &rdev->wiphy;
4194
4195 if (!rdev->ops->scan)
4196 return -EOPNOTSUPP;
4197
4198 if (rdev->scan_req)
4199 return -EBUSY;
4200
4201 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4202 n_channels = validate_scan_freqs(
4203 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4204 if (!n_channels)
4205 return -EINVAL;
4206 } else {
4207 enum ieee80211_band band;
4208 n_channels = 0;
4209
4210 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4211 if (wiphy->bands[band])
4212 n_channels += wiphy->bands[band]->n_channels;
4213 }
4214
4215 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4216 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4217 n_ssids++;
4218
4219 if (n_ssids > wiphy->max_scan_ssids)
4220 return -EINVAL;
4221
4222 if (info->attrs[NL80211_ATTR_IE])
4223 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4224 else
4225 ie_len = 0;
4226
4227 if (ie_len > wiphy->max_scan_ie_len)
4228 return -EINVAL;
4229
4230 request = kzalloc(sizeof(*request)
4231 + sizeof(*request->ssids) * n_ssids
4232 + sizeof(*request->channels) * n_channels
4233 + ie_len, GFP_KERNEL);
4234 if (!request)
4235 return -ENOMEM;
4236
4237 if (n_ssids)
4238 request->ssids = (void *)&request->channels[n_channels];
4239 request->n_ssids = n_ssids;
4240 if (ie_len) {
4241 if (request->ssids)
4242 request->ie = (void *)(request->ssids + n_ssids);
4243 else
4244 request->ie = (void *)(request->channels + n_channels);
4245 }
4246
4247 i = 0;
4248 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4249 /* user specified, bail out if channel not found */
4250 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4251 struct ieee80211_channel *chan;
4252
4253 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4254
4255 if (!chan) {
4256 err = -EINVAL;
4257 goto out_free;
4258 }
4259
4260 /* ignore disabled channels */
4261 if (chan->flags & IEEE80211_CHAN_DISABLED)
4262 continue;
4263
4264 request->channels[i] = chan;
4265 i++;
4266 }
4267 } else {
4268 enum ieee80211_band band;
4269
4270 /* all channels */
4271 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4272 int j;
4273 if (!wiphy->bands[band])
4274 continue;
4275 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4276 struct ieee80211_channel *chan;
4277
4278 chan = &wiphy->bands[band]->channels[j];
4279
4280 if (chan->flags & IEEE80211_CHAN_DISABLED)
4281 continue;
4282
4283 request->channels[i] = chan;
4284 i++;
4285 }
4286 }
4287 }
4288
4289 if (!i) {
4290 err = -EINVAL;
4291 goto out_free;
4292 }
4293
4294 request->n_channels = i;
4295
4296 i = 0;
4297 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4298 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4299 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4300 err = -EINVAL;
4301 goto out_free;
4302 }
4303 request->ssids[i].ssid_len = nla_len(attr);
4304 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4305 i++;
4306 }
4307 }
4308
4309 if (info->attrs[NL80211_ATTR_IE]) {
4310 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4311 memcpy((void *)request->ie,
4312 nla_data(info->attrs[NL80211_ATTR_IE]),
4313 request->ie_len);
4314 }
4315
4316 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4317 if (wiphy->bands[i])
4318 request->rates[i] =
4319 (1 << wiphy->bands[i]->n_bitrates) - 1;
4320
4321 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4322 nla_for_each_nested(attr,
4323 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4324 tmp) {
4325 enum ieee80211_band band = nla_type(attr);
4326
4327 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4328 err = -EINVAL;
4329 goto out_free;
4330 }
4331 err = ieee80211_get_ratemask(wiphy->bands[band],
4332 nla_data(attr),
4333 nla_len(attr),
4334 &request->rates[band]);
4335 if (err)
4336 goto out_free;
4337 }
4338 }
4339
4340 request->no_cck =
4341 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4342
4343 request->wdev = wdev;
4344 request->wiphy = &rdev->wiphy;
4345
4346 rdev->scan_req = request;
4347 err = rdev->ops->scan(&rdev->wiphy, request);
4348
4349 if (!err) {
4350 nl80211_send_scan_start(rdev, wdev);
4351 if (wdev->netdev)
4352 dev_hold(wdev->netdev);
4353 } else {
4354 out_free:
4355 rdev->scan_req = NULL;
4356 kfree(request);
4357 }
4358
4359 return err;
4360 }
4361
4362 static int nl80211_start_sched_scan(struct sk_buff *skb,
4363 struct genl_info *info)
4364 {
4365 struct cfg80211_sched_scan_request *request;
4366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4367 struct net_device *dev = info->user_ptr[1];
4368 struct nlattr *attr;
4369 struct wiphy *wiphy;
4370 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4371 u32 interval;
4372 enum ieee80211_band band;
4373 size_t ie_len;
4374 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4375
4376 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4377 !rdev->ops->sched_scan_start)
4378 return -EOPNOTSUPP;
4379
4380 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4381 return -EINVAL;
4382
4383 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4384 return -EINVAL;
4385
4386 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4387 if (interval == 0)
4388 return -EINVAL;
4389
4390 wiphy = &rdev->wiphy;
4391
4392 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4393 n_channels = validate_scan_freqs(
4394 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4395 if (!n_channels)
4396 return -EINVAL;
4397 } else {
4398 n_channels = 0;
4399
4400 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4401 if (wiphy->bands[band])
4402 n_channels += wiphy->bands[band]->n_channels;
4403 }
4404
4405 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4406 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4407 tmp)
4408 n_ssids++;
4409
4410 if (n_ssids > wiphy->max_sched_scan_ssids)
4411 return -EINVAL;
4412
4413 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4414 nla_for_each_nested(attr,
4415 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4416 tmp)
4417 n_match_sets++;
4418
4419 if (n_match_sets > wiphy->max_match_sets)
4420 return -EINVAL;
4421
4422 if (info->attrs[NL80211_ATTR_IE])
4423 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4424 else
4425 ie_len = 0;
4426
4427 if (ie_len > wiphy->max_sched_scan_ie_len)
4428 return -EINVAL;
4429
4430 mutex_lock(&rdev->sched_scan_mtx);
4431
4432 if (rdev->sched_scan_req) {
4433 err = -EINPROGRESS;
4434 goto out;
4435 }
4436
4437 request = kzalloc(sizeof(*request)
4438 + sizeof(*request->ssids) * n_ssids
4439 + sizeof(*request->match_sets) * n_match_sets
4440 + sizeof(*request->channels) * n_channels
4441 + ie_len, GFP_KERNEL);
4442 if (!request) {
4443 err = -ENOMEM;
4444 goto out;
4445 }
4446
4447 if (n_ssids)
4448 request->ssids = (void *)&request->channels[n_channels];
4449 request->n_ssids = n_ssids;
4450 if (ie_len) {
4451 if (request->ssids)
4452 request->ie = (void *)(request->ssids + n_ssids);
4453 else
4454 request->ie = (void *)(request->channels + n_channels);
4455 }
4456
4457 if (n_match_sets) {
4458 if (request->ie)
4459 request->match_sets = (void *)(request->ie + ie_len);
4460 else if (request->ssids)
4461 request->match_sets =
4462 (void *)(request->ssids + n_ssids);
4463 else
4464 request->match_sets =
4465 (void *)(request->channels + n_channels);
4466 }
4467 request->n_match_sets = n_match_sets;
4468
4469 i = 0;
4470 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4471 /* user specified, bail out if channel not found */
4472 nla_for_each_nested(attr,
4473 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4474 tmp) {
4475 struct ieee80211_channel *chan;
4476
4477 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4478
4479 if (!chan) {
4480 err = -EINVAL;
4481 goto out_free;
4482 }
4483
4484 /* ignore disabled channels */
4485 if (chan->flags & IEEE80211_CHAN_DISABLED)
4486 continue;
4487
4488 request->channels[i] = chan;
4489 i++;
4490 }
4491 } else {
4492 /* all channels */
4493 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4494 int j;
4495 if (!wiphy->bands[band])
4496 continue;
4497 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4498 struct ieee80211_channel *chan;
4499
4500 chan = &wiphy->bands[band]->channels[j];
4501
4502 if (chan->flags & IEEE80211_CHAN_DISABLED)
4503 continue;
4504
4505 request->channels[i] = chan;
4506 i++;
4507 }
4508 }
4509 }
4510
4511 if (!i) {
4512 err = -EINVAL;
4513 goto out_free;
4514 }
4515
4516 request->n_channels = i;
4517
4518 i = 0;
4519 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4520 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4521 tmp) {
4522 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4523 err = -EINVAL;
4524 goto out_free;
4525 }
4526 request->ssids[i].ssid_len = nla_len(attr);
4527 memcpy(request->ssids[i].ssid, nla_data(attr),
4528 nla_len(attr));
4529 i++;
4530 }
4531 }
4532
4533 i = 0;
4534 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4535 nla_for_each_nested(attr,
4536 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4537 tmp) {
4538 struct nlattr *ssid, *rssi;
4539
4540 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4541 nla_data(attr), nla_len(attr),
4542 nl80211_match_policy);
4543 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4544 if (ssid) {
4545 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4546 err = -EINVAL;
4547 goto out_free;
4548 }
4549 memcpy(request->match_sets[i].ssid.ssid,
4550 nla_data(ssid), nla_len(ssid));
4551 request->match_sets[i].ssid.ssid_len =
4552 nla_len(ssid);
4553 }
4554 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4555 if (rssi)
4556 request->rssi_thold = nla_get_u32(rssi);
4557 else
4558 request->rssi_thold =
4559 NL80211_SCAN_RSSI_THOLD_OFF;
4560 i++;
4561 }
4562 }
4563
4564 if (info->attrs[NL80211_ATTR_IE]) {
4565 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4566 memcpy((void *)request->ie,
4567 nla_data(info->attrs[NL80211_ATTR_IE]),
4568 request->ie_len);
4569 }
4570
4571 request->dev = dev;
4572 request->wiphy = &rdev->wiphy;
4573 request->interval = interval;
4574
4575 err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4576 if (!err) {
4577 rdev->sched_scan_req = request;
4578 nl80211_send_sched_scan(rdev, dev,
4579 NL80211_CMD_START_SCHED_SCAN);
4580 goto out;
4581 }
4582
4583 out_free:
4584 kfree(request);
4585 out:
4586 mutex_unlock(&rdev->sched_scan_mtx);
4587 return err;
4588 }
4589
4590 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4591 struct genl_info *info)
4592 {
4593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4594 int err;
4595
4596 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4597 !rdev->ops->sched_scan_stop)
4598 return -EOPNOTSUPP;
4599
4600 mutex_lock(&rdev->sched_scan_mtx);
4601 err = __cfg80211_stop_sched_scan(rdev, false);
4602 mutex_unlock(&rdev->sched_scan_mtx);
4603
4604 return err;
4605 }
4606
4607 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4608 u32 seq, int flags,
4609 struct cfg80211_registered_device *rdev,
4610 struct wireless_dev *wdev,
4611 struct cfg80211_internal_bss *intbss)
4612 {
4613 struct cfg80211_bss *res = &intbss->pub;
4614 void *hdr;
4615 struct nlattr *bss;
4616
4617 ASSERT_WDEV_LOCK(wdev);
4618
4619 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).pid, seq, flags,
4620 NL80211_CMD_NEW_SCAN_RESULTS);
4621 if (!hdr)
4622 return -1;
4623
4624 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4625
4626 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4627 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4628 goto nla_put_failure;
4629
4630 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4631 if (!bss)
4632 goto nla_put_failure;
4633 if ((!is_zero_ether_addr(res->bssid) &&
4634 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4635 (res->information_elements && res->len_information_elements &&
4636 nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4637 res->len_information_elements,
4638 res->information_elements)) ||
4639 (res->beacon_ies && res->len_beacon_ies &&
4640 res->beacon_ies != res->information_elements &&
4641 nla_put(msg, NL80211_BSS_BEACON_IES,
4642 res->len_beacon_ies, res->beacon_ies)))
4643 goto nla_put_failure;
4644 if (res->tsf &&
4645 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4646 goto nla_put_failure;
4647 if (res->beacon_interval &&
4648 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4649 goto nla_put_failure;
4650 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4651 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4652 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4653 jiffies_to_msecs(jiffies - intbss->ts)))
4654 goto nla_put_failure;
4655
4656 switch (rdev->wiphy.signal_type) {
4657 case CFG80211_SIGNAL_TYPE_MBM:
4658 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4659 goto nla_put_failure;
4660 break;
4661 case CFG80211_SIGNAL_TYPE_UNSPEC:
4662 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4663 goto nla_put_failure;
4664 break;
4665 default:
4666 break;
4667 }
4668
4669 switch (wdev->iftype) {
4670 case NL80211_IFTYPE_P2P_CLIENT:
4671 case NL80211_IFTYPE_STATION:
4672 if (intbss == wdev->current_bss &&
4673 nla_put_u32(msg, NL80211_BSS_STATUS,
4674 NL80211_BSS_STATUS_ASSOCIATED))
4675 goto nla_put_failure;
4676 break;
4677 case NL80211_IFTYPE_ADHOC:
4678 if (intbss == wdev->current_bss &&
4679 nla_put_u32(msg, NL80211_BSS_STATUS,
4680 NL80211_BSS_STATUS_IBSS_JOINED))
4681 goto nla_put_failure;
4682 break;
4683 default:
4684 break;
4685 }
4686
4687 nla_nest_end(msg, bss);
4688
4689 return genlmsg_end(msg, hdr);
4690
4691 nla_put_failure:
4692 genlmsg_cancel(msg, hdr);
4693 return -EMSGSIZE;
4694 }
4695
4696 static int nl80211_dump_scan(struct sk_buff *skb,
4697 struct netlink_callback *cb)
4698 {
4699 struct cfg80211_registered_device *rdev;
4700 struct net_device *dev;
4701 struct cfg80211_internal_bss *scan;
4702 struct wireless_dev *wdev;
4703 int start = cb->args[1], idx = 0;
4704 int err;
4705
4706 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4707 if (err)
4708 return err;
4709
4710 wdev = dev->ieee80211_ptr;
4711
4712 wdev_lock(wdev);
4713 spin_lock_bh(&rdev->bss_lock);
4714 cfg80211_bss_expire(rdev);
4715
4716 cb->seq = rdev->bss_generation;
4717
4718 list_for_each_entry(scan, &rdev->bss_list, list) {
4719 if (++idx <= start)
4720 continue;
4721 if (nl80211_send_bss(skb, cb,
4722 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4723 rdev, wdev, scan) < 0) {
4724 idx--;
4725 break;
4726 }
4727 }
4728
4729 spin_unlock_bh(&rdev->bss_lock);
4730 wdev_unlock(wdev);
4731
4732 cb->args[1] = idx;
4733 nl80211_finish_netdev_dump(rdev);
4734
4735 return skb->len;
4736 }
4737
4738 static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
4739 int flags, struct net_device *dev,
4740 struct survey_info *survey)
4741 {
4742 void *hdr;
4743 struct nlattr *infoattr;
4744
4745 hdr = nl80211hdr_put(msg, pid, seq, flags,
4746 NL80211_CMD_NEW_SURVEY_RESULTS);
4747 if (!hdr)
4748 return -ENOMEM;
4749
4750 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4751 goto nla_put_failure;
4752
4753 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4754 if (!infoattr)
4755 goto nla_put_failure;
4756
4757 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4758 survey->channel->center_freq))
4759 goto nla_put_failure;
4760
4761 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4762 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4763 goto nla_put_failure;
4764 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4765 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4766 goto nla_put_failure;
4767 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4768 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4769 survey->channel_time))
4770 goto nla_put_failure;
4771 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4772 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4773 survey->channel_time_busy))
4774 goto nla_put_failure;
4775 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4776 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4777 survey->channel_time_ext_busy))
4778 goto nla_put_failure;
4779 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4780 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4781 survey->channel_time_rx))
4782 goto nla_put_failure;
4783 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4784 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4785 survey->channel_time_tx))
4786 goto nla_put_failure;
4787
4788 nla_nest_end(msg, infoattr);
4789
4790 return genlmsg_end(msg, hdr);
4791
4792 nla_put_failure:
4793 genlmsg_cancel(msg, hdr);
4794 return -EMSGSIZE;
4795 }
4796
4797 static int nl80211_dump_survey(struct sk_buff *skb,
4798 struct netlink_callback *cb)
4799 {
4800 struct survey_info survey;
4801 struct cfg80211_registered_device *dev;
4802 struct net_device *netdev;
4803 int survey_idx = cb->args[1];
4804 int res;
4805
4806 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4807 if (res)
4808 return res;
4809
4810 if (!dev->ops->dump_survey) {
4811 res = -EOPNOTSUPP;
4812 goto out_err;
4813 }
4814
4815 while (1) {
4816 struct ieee80211_channel *chan;
4817
4818 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4819 &survey);
4820 if (res == -ENOENT)
4821 break;
4822 if (res)
4823 goto out_err;
4824
4825 /* Survey without a channel doesn't make sense */
4826 if (!survey.channel) {
4827 res = -EINVAL;
4828 goto out;
4829 }
4830
4831 chan = ieee80211_get_channel(&dev->wiphy,
4832 survey.channel->center_freq);
4833 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4834 survey_idx++;
4835 continue;
4836 }
4837
4838 if (nl80211_send_survey(skb,
4839 NETLINK_CB(cb->skb).pid,
4840 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4841 netdev,
4842 &survey) < 0)
4843 goto out;
4844 survey_idx++;
4845 }
4846
4847 out:
4848 cb->args[1] = survey_idx;
4849 res = skb->len;
4850 out_err:
4851 nl80211_finish_netdev_dump(dev);
4852 return res;
4853 }
4854
4855 static bool nl80211_valid_auth_type(enum nl80211_auth_type auth_type)
4856 {
4857 return auth_type <= NL80211_AUTHTYPE_MAX;
4858 }
4859
4860 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4861 {
4862 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4863 NL80211_WPA_VERSION_2));
4864 }
4865
4866 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4867 {
4868 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4869 struct net_device *dev = info->user_ptr[1];
4870 struct ieee80211_channel *chan;
4871 const u8 *bssid, *ssid, *ie = NULL;
4872 int err, ssid_len, ie_len = 0;
4873 enum nl80211_auth_type auth_type;
4874 struct key_parse key;
4875 bool local_state_change;
4876
4877 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4878 return -EINVAL;
4879
4880 if (!info->attrs[NL80211_ATTR_MAC])
4881 return -EINVAL;
4882
4883 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4884 return -EINVAL;
4885
4886 if (!info->attrs[NL80211_ATTR_SSID])
4887 return -EINVAL;
4888
4889 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4890 return -EINVAL;
4891
4892 err = nl80211_parse_key(info, &key);
4893 if (err)
4894 return err;
4895
4896 if (key.idx >= 0) {
4897 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4898 return -EINVAL;
4899 if (!key.p.key || !key.p.key_len)
4900 return -EINVAL;
4901 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4902 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4903 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4904 key.p.key_len != WLAN_KEY_LEN_WEP104))
4905 return -EINVAL;
4906 if (key.idx > 4)
4907 return -EINVAL;
4908 } else {
4909 key.p.key_len = 0;
4910 key.p.key = NULL;
4911 }
4912
4913 if (key.idx >= 0) {
4914 int i;
4915 bool ok = false;
4916 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4917 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4918 ok = true;
4919 break;
4920 }
4921 }
4922 if (!ok)
4923 return -EINVAL;
4924 }
4925
4926 if (!rdev->ops->auth)
4927 return -EOPNOTSUPP;
4928
4929 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4930 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4931 return -EOPNOTSUPP;
4932
4933 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4934 chan = ieee80211_get_channel(&rdev->wiphy,
4935 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4936 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4937 return -EINVAL;
4938
4939 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4940 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4941
4942 if (info->attrs[NL80211_ATTR_IE]) {
4943 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4944 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4945 }
4946
4947 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4948 if (!nl80211_valid_auth_type(auth_type))
4949 return -EINVAL;
4950
4951 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
4952
4953 /*
4954 * Since we no longer track auth state, ignore
4955 * requests to only change local state.
4956 */
4957 if (local_state_change)
4958 return 0;
4959
4960 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
4961 ssid, ssid_len, ie, ie_len,
4962 key.p.key, key.p.key_len, key.idx);
4963 }
4964
4965 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
4966 struct genl_info *info,
4967 struct cfg80211_crypto_settings *settings,
4968 int cipher_limit)
4969 {
4970 memset(settings, 0, sizeof(*settings));
4971
4972 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
4973
4974 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
4975 u16 proto;
4976 proto = nla_get_u16(
4977 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
4978 settings->control_port_ethertype = cpu_to_be16(proto);
4979 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
4980 proto != ETH_P_PAE)
4981 return -EINVAL;
4982 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
4983 settings->control_port_no_encrypt = true;
4984 } else
4985 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
4986
4987 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
4988 void *data;
4989 int len, i;
4990
4991 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4992 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
4993 settings->n_ciphers_pairwise = len / sizeof(u32);
4994
4995 if (len % sizeof(u32))
4996 return -EINVAL;
4997
4998 if (settings->n_ciphers_pairwise > cipher_limit)
4999 return -EINVAL;
5000
5001 memcpy(settings->ciphers_pairwise, data, len);
5002
5003 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5004 if (!cfg80211_supported_cipher_suite(
5005 &rdev->wiphy,
5006 settings->ciphers_pairwise[i]))
5007 return -EINVAL;
5008 }
5009
5010 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5011 settings->cipher_group =
5012 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5013 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5014 settings->cipher_group))
5015 return -EINVAL;
5016 }
5017
5018 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5019 settings->wpa_versions =
5020 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5021 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5022 return -EINVAL;
5023 }
5024
5025 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5026 void *data;
5027 int len;
5028
5029 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5030 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5031 settings->n_akm_suites = len / sizeof(u32);
5032
5033 if (len % sizeof(u32))
5034 return -EINVAL;
5035
5036 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5037 return -EINVAL;
5038
5039 memcpy(settings->akm_suites, data, len);
5040 }
5041
5042 return 0;
5043 }
5044
5045 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5046 {
5047 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5048 struct net_device *dev = info->user_ptr[1];
5049 struct cfg80211_crypto_settings crypto;
5050 struct ieee80211_channel *chan;
5051 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5052 int err, ssid_len, ie_len = 0;
5053 bool use_mfp = false;
5054 u32 flags = 0;
5055 struct ieee80211_ht_cap *ht_capa = NULL;
5056 struct ieee80211_ht_cap *ht_capa_mask = NULL;
5057
5058 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5059 return -EINVAL;
5060
5061 if (!info->attrs[NL80211_ATTR_MAC] ||
5062 !info->attrs[NL80211_ATTR_SSID] ||
5063 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5064 return -EINVAL;
5065
5066 if (!rdev->ops->assoc)
5067 return -EOPNOTSUPP;
5068
5069 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5070 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5071 return -EOPNOTSUPP;
5072
5073 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5074
5075 chan = ieee80211_get_channel(&rdev->wiphy,
5076 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5077 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5078 return -EINVAL;
5079
5080 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5081 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5082
5083 if (info->attrs[NL80211_ATTR_IE]) {
5084 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5085 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5086 }
5087
5088 if (info->attrs[NL80211_ATTR_USE_MFP]) {
5089 enum nl80211_mfp mfp =
5090 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5091 if (mfp == NL80211_MFP_REQUIRED)
5092 use_mfp = true;
5093 else if (mfp != NL80211_MFP_NO)
5094 return -EINVAL;
5095 }
5096
5097 if (info->attrs[NL80211_ATTR_PREV_BSSID])
5098 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5099
5100 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5101 flags |= ASSOC_REQ_DISABLE_HT;
5102
5103 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5104 ht_capa_mask =
5105 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5106
5107 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5108 if (!ht_capa_mask)
5109 return -EINVAL;
5110 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5111 }
5112
5113 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5114 if (!err)
5115 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5116 ssid, ssid_len, ie, ie_len, use_mfp,
5117 &crypto, flags, ht_capa,
5118 ht_capa_mask);
5119
5120 return err;
5121 }
5122
5123 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5124 {
5125 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5126 struct net_device *dev = info->user_ptr[1];
5127 const u8 *ie = NULL, *bssid;
5128 int ie_len = 0;
5129 u16 reason_code;
5130 bool local_state_change;
5131
5132 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5133 return -EINVAL;
5134
5135 if (!info->attrs[NL80211_ATTR_MAC])
5136 return -EINVAL;
5137
5138 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5139 return -EINVAL;
5140
5141 if (!rdev->ops->deauth)
5142 return -EOPNOTSUPP;
5143
5144 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5145 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5146 return -EOPNOTSUPP;
5147
5148 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5149
5150 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5151 if (reason_code == 0) {
5152 /* Reason Code 0 is reserved */
5153 return -EINVAL;
5154 }
5155
5156 if (info->attrs[NL80211_ATTR_IE]) {
5157 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5158 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5159 }
5160
5161 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5162
5163 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5164 local_state_change);
5165 }
5166
5167 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5168 {
5169 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5170 struct net_device *dev = info->user_ptr[1];
5171 const u8 *ie = NULL, *bssid;
5172 int ie_len = 0;
5173 u16 reason_code;
5174 bool local_state_change;
5175
5176 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5177 return -EINVAL;
5178
5179 if (!info->attrs[NL80211_ATTR_MAC])
5180 return -EINVAL;
5181
5182 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5183 return -EINVAL;
5184
5185 if (!rdev->ops->disassoc)
5186 return -EOPNOTSUPP;
5187
5188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5190 return -EOPNOTSUPP;
5191
5192 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5193
5194 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5195 if (reason_code == 0) {
5196 /* Reason Code 0 is reserved */
5197 return -EINVAL;
5198 }
5199
5200 if (info->attrs[NL80211_ATTR_IE]) {
5201 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5202 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5203 }
5204
5205 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5206
5207 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5208 local_state_change);
5209 }
5210
5211 static bool
5212 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5213 int mcast_rate[IEEE80211_NUM_BANDS],
5214 int rateval)
5215 {
5216 struct wiphy *wiphy = &rdev->wiphy;
5217 bool found = false;
5218 int band, i;
5219
5220 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5221 struct ieee80211_supported_band *sband;
5222
5223 sband = wiphy->bands[band];
5224 if (!sband)
5225 continue;
5226
5227 for (i = 0; i < sband->n_bitrates; i++) {
5228 if (sband->bitrates[i].bitrate == rateval) {
5229 mcast_rate[band] = i + 1;
5230 found = true;
5231 break;
5232 }
5233 }
5234 }
5235
5236 return found;
5237 }
5238
5239 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5240 {
5241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5242 struct net_device *dev = info->user_ptr[1];
5243 struct cfg80211_ibss_params ibss;
5244 struct wiphy *wiphy;
5245 struct cfg80211_cached_keys *connkeys = NULL;
5246 int err;
5247
5248 memset(&ibss, 0, sizeof(ibss));
5249
5250 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5251 return -EINVAL;
5252
5253 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5254 !info->attrs[NL80211_ATTR_SSID] ||
5255 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5256 return -EINVAL;
5257
5258 ibss.beacon_interval = 100;
5259
5260 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5261 ibss.beacon_interval =
5262 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5263 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5264 return -EINVAL;
5265 }
5266
5267 if (!rdev->ops->join_ibss)
5268 return -EOPNOTSUPP;
5269
5270 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5271 return -EOPNOTSUPP;
5272
5273 wiphy = &rdev->wiphy;
5274
5275 if (info->attrs[NL80211_ATTR_MAC]) {
5276 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5277
5278 if (!is_valid_ether_addr(ibss.bssid))
5279 return -EINVAL;
5280 }
5281 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5282 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5283
5284 if (info->attrs[NL80211_ATTR_IE]) {
5285 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5286 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5287 }
5288
5289 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5290 enum nl80211_channel_type channel_type;
5291
5292 if (!nl80211_valid_channel_type(info, &channel_type))
5293 return -EINVAL;
5294
5295 if (channel_type != NL80211_CHAN_NO_HT &&
5296 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5297 return -EINVAL;
5298
5299 ibss.channel_type = channel_type;
5300 } else {
5301 ibss.channel_type = NL80211_CHAN_NO_HT;
5302 }
5303
5304 ibss.channel = rdev_freq_to_chan(rdev,
5305 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5306 ibss.channel_type);
5307 if (!ibss.channel ||
5308 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5309 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5310 return -EINVAL;
5311
5312 /* Both channels should be able to initiate communication */
5313 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5314 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5315 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5316 ibss.channel_type))
5317 return -EINVAL;
5318
5319 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5320 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5321
5322 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5323 u8 *rates =
5324 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5325 int n_rates =
5326 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5327 struct ieee80211_supported_band *sband =
5328 wiphy->bands[ibss.channel->band];
5329
5330 err = ieee80211_get_ratemask(sband, rates, n_rates,
5331 &ibss.basic_rates);
5332 if (err)
5333 return err;
5334 }
5335
5336 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5337 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5338 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5339 return -EINVAL;
5340
5341 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5342 connkeys = nl80211_parse_connkeys(rdev,
5343 info->attrs[NL80211_ATTR_KEYS]);
5344 if (IS_ERR(connkeys))
5345 return PTR_ERR(connkeys);
5346 }
5347
5348 ibss.control_port =
5349 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5350
5351 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5352 if (err)
5353 kfree(connkeys);
5354 return err;
5355 }
5356
5357 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5358 {
5359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5360 struct net_device *dev = info->user_ptr[1];
5361
5362 if (!rdev->ops->leave_ibss)
5363 return -EOPNOTSUPP;
5364
5365 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5366 return -EOPNOTSUPP;
5367
5368 return cfg80211_leave_ibss(rdev, dev, false);
5369 }
5370
5371 #ifdef CONFIG_NL80211_TESTMODE
5372 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5373 .name = "testmode",
5374 };
5375
5376 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5377 {
5378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5379 int err;
5380
5381 if (!info->attrs[NL80211_ATTR_TESTDATA])
5382 return -EINVAL;
5383
5384 err = -EOPNOTSUPP;
5385 if (rdev->ops->testmode_cmd) {
5386 rdev->testmode_info = info;
5387 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5388 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5389 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5390 rdev->testmode_info = NULL;
5391 }
5392
5393 return err;
5394 }
5395
5396 static int nl80211_testmode_dump(struct sk_buff *skb,
5397 struct netlink_callback *cb)
5398 {
5399 struct cfg80211_registered_device *rdev;
5400 int err;
5401 long phy_idx;
5402 void *data = NULL;
5403 int data_len = 0;
5404
5405 if (cb->args[0]) {
5406 /*
5407 * 0 is a valid index, but not valid for args[0],
5408 * so we need to offset by 1.
5409 */
5410 phy_idx = cb->args[0] - 1;
5411 } else {
5412 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5413 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5414 nl80211_policy);
5415 if (err)
5416 return err;
5417
5418 mutex_lock(&cfg80211_mutex);
5419 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5420 nl80211_fam.attrbuf);
5421 if (IS_ERR(rdev)) {
5422 mutex_unlock(&cfg80211_mutex);
5423 return PTR_ERR(rdev);
5424 }
5425 phy_idx = rdev->wiphy_idx;
5426 rdev = NULL;
5427 mutex_unlock(&cfg80211_mutex);
5428
5429 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5430 cb->args[1] =
5431 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5432 }
5433
5434 if (cb->args[1]) {
5435 data = nla_data((void *)cb->args[1]);
5436 data_len = nla_len((void *)cb->args[1]);
5437 }
5438
5439 mutex_lock(&cfg80211_mutex);
5440 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5441 if (!rdev) {
5442 mutex_unlock(&cfg80211_mutex);
5443 return -ENOENT;
5444 }
5445 cfg80211_lock_rdev(rdev);
5446 mutex_unlock(&cfg80211_mutex);
5447
5448 if (!rdev->ops->testmode_dump) {
5449 err = -EOPNOTSUPP;
5450 goto out_err;
5451 }
5452
5453 while (1) {
5454 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).pid,
5455 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5456 NL80211_CMD_TESTMODE);
5457 struct nlattr *tmdata;
5458
5459 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5460 genlmsg_cancel(skb, hdr);
5461 break;
5462 }
5463
5464 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5465 if (!tmdata) {
5466 genlmsg_cancel(skb, hdr);
5467 break;
5468 }
5469 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5470 data, data_len);
5471 nla_nest_end(skb, tmdata);
5472
5473 if (err == -ENOBUFS || err == -ENOENT) {
5474 genlmsg_cancel(skb, hdr);
5475 break;
5476 } else if (err) {
5477 genlmsg_cancel(skb, hdr);
5478 goto out_err;
5479 }
5480
5481 genlmsg_end(skb, hdr);
5482 }
5483
5484 err = skb->len;
5485 /* see above */
5486 cb->args[0] = phy_idx + 1;
5487 out_err:
5488 cfg80211_unlock_rdev(rdev);
5489 return err;
5490 }
5491
5492 static struct sk_buff *
5493 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5494 int approxlen, u32 pid, u32 seq, gfp_t gfp)
5495 {
5496 struct sk_buff *skb;
5497 void *hdr;
5498 struct nlattr *data;
5499
5500 skb = nlmsg_new(approxlen + 100, gfp);
5501 if (!skb)
5502 return NULL;
5503
5504 hdr = nl80211hdr_put(skb, pid, seq, 0, NL80211_CMD_TESTMODE);
5505 if (!hdr) {
5506 kfree_skb(skb);
5507 return NULL;
5508 }
5509
5510 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5511 goto nla_put_failure;
5512 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5513
5514 ((void **)skb->cb)[0] = rdev;
5515 ((void **)skb->cb)[1] = hdr;
5516 ((void **)skb->cb)[2] = data;
5517
5518 return skb;
5519
5520 nla_put_failure:
5521 kfree_skb(skb);
5522 return NULL;
5523 }
5524
5525 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5526 int approxlen)
5527 {
5528 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5529
5530 if (WARN_ON(!rdev->testmode_info))
5531 return NULL;
5532
5533 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5534 rdev->testmode_info->snd_pid,
5535 rdev->testmode_info->snd_seq,
5536 GFP_KERNEL);
5537 }
5538 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5539
5540 int cfg80211_testmode_reply(struct sk_buff *skb)
5541 {
5542 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5543 void *hdr = ((void **)skb->cb)[1];
5544 struct nlattr *data = ((void **)skb->cb)[2];
5545
5546 if (WARN_ON(!rdev->testmode_info)) {
5547 kfree_skb(skb);
5548 return -EINVAL;
5549 }
5550
5551 nla_nest_end(skb, data);
5552 genlmsg_end(skb, hdr);
5553 return genlmsg_reply(skb, rdev->testmode_info);
5554 }
5555 EXPORT_SYMBOL(cfg80211_testmode_reply);
5556
5557 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5558 int approxlen, gfp_t gfp)
5559 {
5560 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5561
5562 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5563 }
5564 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5565
5566 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5567 {
5568 void *hdr = ((void **)skb->cb)[1];
5569 struct nlattr *data = ((void **)skb->cb)[2];
5570
5571 nla_nest_end(skb, data);
5572 genlmsg_end(skb, hdr);
5573 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5574 }
5575 EXPORT_SYMBOL(cfg80211_testmode_event);
5576 #endif
5577
5578 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5579 {
5580 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5581 struct net_device *dev = info->user_ptr[1];
5582 struct cfg80211_connect_params connect;
5583 struct wiphy *wiphy;
5584 struct cfg80211_cached_keys *connkeys = NULL;
5585 int err;
5586
5587 memset(&connect, 0, sizeof(connect));
5588
5589 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5590 return -EINVAL;
5591
5592 if (!info->attrs[NL80211_ATTR_SSID] ||
5593 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5594 return -EINVAL;
5595
5596 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5597 connect.auth_type =
5598 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5599 if (!nl80211_valid_auth_type(connect.auth_type))
5600 return -EINVAL;
5601 } else
5602 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5603
5604 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5605
5606 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5607 NL80211_MAX_NR_CIPHER_SUITES);
5608 if (err)
5609 return err;
5610
5611 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5612 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5613 return -EOPNOTSUPP;
5614
5615 wiphy = &rdev->wiphy;
5616
5617 connect.bg_scan_period = -1;
5618 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5619 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5620 connect.bg_scan_period =
5621 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5622 }
5623
5624 if (info->attrs[NL80211_ATTR_MAC])
5625 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5626 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5627 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5628
5629 if (info->attrs[NL80211_ATTR_IE]) {
5630 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5631 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5632 }
5633
5634 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5635 connect.channel =
5636 ieee80211_get_channel(wiphy,
5637 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5638 if (!connect.channel ||
5639 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5640 return -EINVAL;
5641 }
5642
5643 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5644 connkeys = nl80211_parse_connkeys(rdev,
5645 info->attrs[NL80211_ATTR_KEYS]);
5646 if (IS_ERR(connkeys))
5647 return PTR_ERR(connkeys);
5648 }
5649
5650 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5651 connect.flags |= ASSOC_REQ_DISABLE_HT;
5652
5653 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5654 memcpy(&connect.ht_capa_mask,
5655 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5656 sizeof(connect.ht_capa_mask));
5657
5658 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5659 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5660 kfree(connkeys);
5661 return -EINVAL;
5662 }
5663 memcpy(&connect.ht_capa,
5664 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5665 sizeof(connect.ht_capa));
5666 }
5667
5668 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5669 if (err)
5670 kfree(connkeys);
5671 return err;
5672 }
5673
5674 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5675 {
5676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5677 struct net_device *dev = info->user_ptr[1];
5678 u16 reason;
5679
5680 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5681 reason = WLAN_REASON_DEAUTH_LEAVING;
5682 else
5683 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5684
5685 if (reason == 0)
5686 return -EINVAL;
5687
5688 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5689 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5690 return -EOPNOTSUPP;
5691
5692 return cfg80211_disconnect(rdev, dev, reason, true);
5693 }
5694
5695 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5696 {
5697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5698 struct net *net;
5699 int err;
5700 u32 pid;
5701
5702 if (!info->attrs[NL80211_ATTR_PID])
5703 return -EINVAL;
5704
5705 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5706
5707 net = get_net_ns_by_pid(pid);
5708 if (IS_ERR(net))
5709 return PTR_ERR(net);
5710
5711 err = 0;
5712
5713 /* check if anything to do */
5714 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5715 err = cfg80211_switch_netns(rdev, net);
5716
5717 put_net(net);
5718 return err;
5719 }
5720
5721 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5722 {
5723 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5724 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5725 struct cfg80211_pmksa *pmksa) = NULL;
5726 struct net_device *dev = info->user_ptr[1];
5727 struct cfg80211_pmksa pmksa;
5728
5729 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5730
5731 if (!info->attrs[NL80211_ATTR_MAC])
5732 return -EINVAL;
5733
5734 if (!info->attrs[NL80211_ATTR_PMKID])
5735 return -EINVAL;
5736
5737 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5738 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5739
5740 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5741 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5742 return -EOPNOTSUPP;
5743
5744 switch (info->genlhdr->cmd) {
5745 case NL80211_CMD_SET_PMKSA:
5746 rdev_ops = rdev->ops->set_pmksa;
5747 break;
5748 case NL80211_CMD_DEL_PMKSA:
5749 rdev_ops = rdev->ops->del_pmksa;
5750 break;
5751 default:
5752 WARN_ON(1);
5753 break;
5754 }
5755
5756 if (!rdev_ops)
5757 return -EOPNOTSUPP;
5758
5759 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5760 }
5761
5762 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5763 {
5764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5765 struct net_device *dev = info->user_ptr[1];
5766
5767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5768 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5769 return -EOPNOTSUPP;
5770
5771 if (!rdev->ops->flush_pmksa)
5772 return -EOPNOTSUPP;
5773
5774 return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5775 }
5776
5777 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5778 {
5779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5780 struct net_device *dev = info->user_ptr[1];
5781 u8 action_code, dialog_token;
5782 u16 status_code;
5783 u8 *peer;
5784
5785 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5786 !rdev->ops->tdls_mgmt)
5787 return -EOPNOTSUPP;
5788
5789 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5790 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5791 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5792 !info->attrs[NL80211_ATTR_IE] ||
5793 !info->attrs[NL80211_ATTR_MAC])
5794 return -EINVAL;
5795
5796 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5797 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5798 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5799 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5800
5801 return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5802 dialog_token, status_code,
5803 nla_data(info->attrs[NL80211_ATTR_IE]),
5804 nla_len(info->attrs[NL80211_ATTR_IE]));
5805 }
5806
5807 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5808 {
5809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5810 struct net_device *dev = info->user_ptr[1];
5811 enum nl80211_tdls_operation operation;
5812 u8 *peer;
5813
5814 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5815 !rdev->ops->tdls_oper)
5816 return -EOPNOTSUPP;
5817
5818 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5819 !info->attrs[NL80211_ATTR_MAC])
5820 return -EINVAL;
5821
5822 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5823 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5824
5825 return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5826 }
5827
5828 static int nl80211_remain_on_channel(struct sk_buff *skb,
5829 struct genl_info *info)
5830 {
5831 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5832 struct wireless_dev *wdev = info->user_ptr[1];
5833 struct ieee80211_channel *chan;
5834 struct sk_buff *msg;
5835 void *hdr;
5836 u64 cookie;
5837 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5838 u32 freq, duration;
5839 int err;
5840
5841 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5842 !info->attrs[NL80211_ATTR_DURATION])
5843 return -EINVAL;
5844
5845 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5846
5847 if (!rdev->ops->remain_on_channel ||
5848 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5849 return -EOPNOTSUPP;
5850
5851 /*
5852 * We should be on that channel for at least a minimum amount of
5853 * time (10ms) but no longer than the driver supports.
5854 */
5855 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5856 duration > rdev->wiphy.max_remain_on_channel_duration)
5857 return -EINVAL;
5858
5859 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5860 !nl80211_valid_channel_type(info, &channel_type))
5861 return -EINVAL;
5862
5863 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5864 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5865 if (chan == NULL)
5866 return -EINVAL;
5867
5868 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5869 if (!msg)
5870 return -ENOMEM;
5871
5872 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
5873 NL80211_CMD_REMAIN_ON_CHANNEL);
5874
5875 if (IS_ERR(hdr)) {
5876 err = PTR_ERR(hdr);
5877 goto free_msg;
5878 }
5879
5880 err = rdev->ops->remain_on_channel(&rdev->wiphy, wdev, chan,
5881 channel_type, duration, &cookie);
5882
5883 if (err)
5884 goto free_msg;
5885
5886 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5887 goto nla_put_failure;
5888
5889 genlmsg_end(msg, hdr);
5890
5891 return genlmsg_reply(msg, info);
5892
5893 nla_put_failure:
5894 err = -ENOBUFS;
5895 free_msg:
5896 nlmsg_free(msg);
5897 return err;
5898 }
5899
5900 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5901 struct genl_info *info)
5902 {
5903 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5904 struct wireless_dev *wdev = info->user_ptr[1];
5905 u64 cookie;
5906
5907 if (!info->attrs[NL80211_ATTR_COOKIE])
5908 return -EINVAL;
5909
5910 if (!rdev->ops->cancel_remain_on_channel)
5911 return -EOPNOTSUPP;
5912
5913 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5914
5915 return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, wdev, cookie);
5916 }
5917
5918 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5919 u8 *rates, u8 rates_len)
5920 {
5921 u8 i;
5922 u32 mask = 0;
5923
5924 for (i = 0; i < rates_len; i++) {
5925 int rate = (rates[i] & 0x7f) * 5;
5926 int ridx;
5927 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5928 struct ieee80211_rate *srate =
5929 &sband->bitrates[ridx];
5930 if (rate == srate->bitrate) {
5931 mask |= 1 << ridx;
5932 break;
5933 }
5934 }
5935 if (ridx == sband->n_bitrates)
5936 return 0; /* rate not found */
5937 }
5938
5939 return mask;
5940 }
5941
5942 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
5943 u8 *rates, u8 rates_len,
5944 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
5945 {
5946 u8 i;
5947
5948 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
5949
5950 for (i = 0; i < rates_len; i++) {
5951 int ridx, rbit;
5952
5953 ridx = rates[i] / 8;
5954 rbit = BIT(rates[i] % 8);
5955
5956 /* check validity */
5957 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
5958 return false;
5959
5960 /* check availability */
5961 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
5962 mcs[ridx] |= rbit;
5963 else
5964 return false;
5965 }
5966
5967 return true;
5968 }
5969
5970 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
5971 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
5972 .len = NL80211_MAX_SUPP_RATES },
5973 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
5974 .len = NL80211_MAX_SUPP_HT_RATES },
5975 };
5976
5977 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
5978 struct genl_info *info)
5979 {
5980 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5982 struct cfg80211_bitrate_mask mask;
5983 int rem, i;
5984 struct net_device *dev = info->user_ptr[1];
5985 struct nlattr *tx_rates;
5986 struct ieee80211_supported_band *sband;
5987
5988 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
5989 return -EINVAL;
5990
5991 if (!rdev->ops->set_bitrate_mask)
5992 return -EOPNOTSUPP;
5993
5994 memset(&mask, 0, sizeof(mask));
5995 /* Default to all rates enabled */
5996 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
5997 sband = rdev->wiphy.bands[i];
5998 mask.control[i].legacy =
5999 sband ? (1 << sband->n_bitrates) - 1 : 0;
6000 if (sband)
6001 memcpy(mask.control[i].mcs,
6002 sband->ht_cap.mcs.rx_mask,
6003 sizeof(mask.control[i].mcs));
6004 else
6005 memset(mask.control[i].mcs, 0,
6006 sizeof(mask.control[i].mcs));
6007 }
6008
6009 /*
6010 * The nested attribute uses enum nl80211_band as the index. This maps
6011 * directly to the enum ieee80211_band values used in cfg80211.
6012 */
6013 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6014 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6015 {
6016 enum ieee80211_band band = nla_type(tx_rates);
6017 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6018 return -EINVAL;
6019 sband = rdev->wiphy.bands[band];
6020 if (sband == NULL)
6021 return -EINVAL;
6022 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6023 nla_len(tx_rates), nl80211_txattr_policy);
6024 if (tb[NL80211_TXRATE_LEGACY]) {
6025 mask.control[band].legacy = rateset_to_mask(
6026 sband,
6027 nla_data(tb[NL80211_TXRATE_LEGACY]),
6028 nla_len(tb[NL80211_TXRATE_LEGACY]));
6029 if ((mask.control[band].legacy == 0) &&
6030 nla_len(tb[NL80211_TXRATE_LEGACY]))
6031 return -EINVAL;
6032 }
6033 if (tb[NL80211_TXRATE_MCS]) {
6034 if (!ht_rateset_to_mask(
6035 sband,
6036 nla_data(tb[NL80211_TXRATE_MCS]),
6037 nla_len(tb[NL80211_TXRATE_MCS]),
6038 mask.control[band].mcs))
6039 return -EINVAL;
6040 }
6041
6042 if (mask.control[band].legacy == 0) {
6043 /* don't allow empty legacy rates if HT
6044 * is not even supported. */
6045 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6046 return -EINVAL;
6047
6048 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6049 if (mask.control[band].mcs[i])
6050 break;
6051
6052 /* legacy and mcs rates may not be both empty */
6053 if (i == IEEE80211_HT_MCS_MASK_LEN)
6054 return -EINVAL;
6055 }
6056 }
6057
6058 return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
6059 }
6060
6061 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6062 {
6063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6064 struct wireless_dev *wdev = info->user_ptr[1];
6065 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6066
6067 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6068 return -EINVAL;
6069
6070 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6071 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6072
6073 switch (wdev->iftype) {
6074 case NL80211_IFTYPE_STATION:
6075 case NL80211_IFTYPE_ADHOC:
6076 case NL80211_IFTYPE_P2P_CLIENT:
6077 case NL80211_IFTYPE_AP:
6078 case NL80211_IFTYPE_AP_VLAN:
6079 case NL80211_IFTYPE_MESH_POINT:
6080 case NL80211_IFTYPE_P2P_GO:
6081 case NL80211_IFTYPE_P2P_DEVICE:
6082 break;
6083 default:
6084 return -EOPNOTSUPP;
6085 }
6086
6087 /* not much point in registering if we can't reply */
6088 if (!rdev->ops->mgmt_tx)
6089 return -EOPNOTSUPP;
6090
6091 return cfg80211_mlme_register_mgmt(wdev, info->snd_pid, frame_type,
6092 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6093 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6094 }
6095
6096 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
6097 {
6098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6099 struct wireless_dev *wdev = info->user_ptr[1];
6100 struct ieee80211_channel *chan;
6101 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6102 bool channel_type_valid = false;
6103 u32 freq;
6104 int err;
6105 void *hdr = NULL;
6106 u64 cookie;
6107 struct sk_buff *msg = NULL;
6108 unsigned int wait = 0;
6109 bool offchan, no_cck, dont_wait_for_ack;
6110
6111 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6112
6113 if (!info->attrs[NL80211_ATTR_FRAME] ||
6114 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6115 return -EINVAL;
6116
6117 if (!rdev->ops->mgmt_tx)
6118 return -EOPNOTSUPP;
6119
6120 switch (wdev->iftype) {
6121 case NL80211_IFTYPE_STATION:
6122 case NL80211_IFTYPE_ADHOC:
6123 case NL80211_IFTYPE_P2P_CLIENT:
6124 case NL80211_IFTYPE_AP:
6125 case NL80211_IFTYPE_AP_VLAN:
6126 case NL80211_IFTYPE_MESH_POINT:
6127 case NL80211_IFTYPE_P2P_GO:
6128 case NL80211_IFTYPE_P2P_DEVICE:
6129 break;
6130 default:
6131 return -EOPNOTSUPP;
6132 }
6133
6134 if (info->attrs[NL80211_ATTR_DURATION]) {
6135 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6136 return -EINVAL;
6137 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6138
6139 /*
6140 * We should wait on the channel for at least a minimum amount
6141 * of time (10ms) but no longer than the driver supports.
6142 */
6143 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6144 wait > rdev->wiphy.max_remain_on_channel_duration)
6145 return -EINVAL;
6146
6147 }
6148
6149 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
6150 if (!nl80211_valid_channel_type(info, &channel_type))
6151 return -EINVAL;
6152 channel_type_valid = true;
6153 }
6154
6155 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6156
6157 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6158 return -EINVAL;
6159
6160 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6161
6162 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6163 chan = rdev_freq_to_chan(rdev, freq, channel_type);
6164 if (chan == NULL)
6165 return -EINVAL;
6166
6167 if (!dont_wait_for_ack) {
6168 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6169 if (!msg)
6170 return -ENOMEM;
6171
6172 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6173 NL80211_CMD_FRAME);
6174
6175 if (IS_ERR(hdr)) {
6176 err = PTR_ERR(hdr);
6177 goto free_msg;
6178 }
6179 }
6180
6181 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chan, offchan, channel_type,
6182 channel_type_valid, wait,
6183 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6184 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6185 no_cck, dont_wait_for_ack, &cookie);
6186 if (err)
6187 goto free_msg;
6188
6189 if (msg) {
6190 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6191 goto nla_put_failure;
6192
6193 genlmsg_end(msg, hdr);
6194 return genlmsg_reply(msg, info);
6195 }
6196
6197 return 0;
6198
6199 nla_put_failure:
6200 err = -ENOBUFS;
6201 free_msg:
6202 nlmsg_free(msg);
6203 return err;
6204 }
6205
6206 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6207 {
6208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6209 struct wireless_dev *wdev = info->user_ptr[1];
6210 u64 cookie;
6211
6212 if (!info->attrs[NL80211_ATTR_COOKIE])
6213 return -EINVAL;
6214
6215 if (!rdev->ops->mgmt_tx_cancel_wait)
6216 return -EOPNOTSUPP;
6217
6218 switch (wdev->iftype) {
6219 case NL80211_IFTYPE_STATION:
6220 case NL80211_IFTYPE_ADHOC:
6221 case NL80211_IFTYPE_P2P_CLIENT:
6222 case NL80211_IFTYPE_AP:
6223 case NL80211_IFTYPE_AP_VLAN:
6224 case NL80211_IFTYPE_P2P_GO:
6225 case NL80211_IFTYPE_P2P_DEVICE:
6226 break;
6227 default:
6228 return -EOPNOTSUPP;
6229 }
6230
6231 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6232
6233 return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, wdev, cookie);
6234 }
6235
6236 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6237 {
6238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6239 struct wireless_dev *wdev;
6240 struct net_device *dev = info->user_ptr[1];
6241 u8 ps_state;
6242 bool state;
6243 int err;
6244
6245 if (!info->attrs[NL80211_ATTR_PS_STATE])
6246 return -EINVAL;
6247
6248 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6249
6250 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6251 return -EINVAL;
6252
6253 wdev = dev->ieee80211_ptr;
6254
6255 if (!rdev->ops->set_power_mgmt)
6256 return -EOPNOTSUPP;
6257
6258 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6259
6260 if (state == wdev->ps)
6261 return 0;
6262
6263 err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6264 wdev->ps_timeout);
6265 if (!err)
6266 wdev->ps = state;
6267 return err;
6268 }
6269
6270 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6271 {
6272 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6273 enum nl80211_ps_state ps_state;
6274 struct wireless_dev *wdev;
6275 struct net_device *dev = info->user_ptr[1];
6276 struct sk_buff *msg;
6277 void *hdr;
6278 int err;
6279
6280 wdev = dev->ieee80211_ptr;
6281
6282 if (!rdev->ops->set_power_mgmt)
6283 return -EOPNOTSUPP;
6284
6285 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6286 if (!msg)
6287 return -ENOMEM;
6288
6289 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6290 NL80211_CMD_GET_POWER_SAVE);
6291 if (!hdr) {
6292 err = -ENOBUFS;
6293 goto free_msg;
6294 }
6295
6296 if (wdev->ps)
6297 ps_state = NL80211_PS_ENABLED;
6298 else
6299 ps_state = NL80211_PS_DISABLED;
6300
6301 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6302 goto nla_put_failure;
6303
6304 genlmsg_end(msg, hdr);
6305 return genlmsg_reply(msg, info);
6306
6307 nla_put_failure:
6308 err = -ENOBUFS;
6309 free_msg:
6310 nlmsg_free(msg);
6311 return err;
6312 }
6313
6314 static struct nla_policy
6315 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6316 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6317 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6318 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6319 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6320 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6321 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6322 };
6323
6324 static int nl80211_set_cqm_txe(struct genl_info *info,
6325 u32 rate, u32 pkts, u32 intvl)
6326 {
6327 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6328 struct wireless_dev *wdev;
6329 struct net_device *dev = info->user_ptr[1];
6330
6331 if ((rate < 0 || rate > 100) ||
6332 (intvl < 0 || intvl > NL80211_CQM_TXE_MAX_INTVL))
6333 return -EINVAL;
6334
6335 wdev = dev->ieee80211_ptr;
6336
6337 if (!rdev->ops->set_cqm_txe_config)
6338 return -EOPNOTSUPP;
6339
6340 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6341 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6342 return -EOPNOTSUPP;
6343
6344 return rdev->ops->set_cqm_txe_config(wdev->wiphy, dev,
6345 rate, pkts, intvl);
6346 }
6347
6348 static int nl80211_set_cqm_rssi(struct genl_info *info,
6349 s32 threshold, u32 hysteresis)
6350 {
6351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6352 struct wireless_dev *wdev;
6353 struct net_device *dev = info->user_ptr[1];
6354
6355 if (threshold > 0)
6356 return -EINVAL;
6357
6358 wdev = dev->ieee80211_ptr;
6359
6360 if (!rdev->ops->set_cqm_rssi_config)
6361 return -EOPNOTSUPP;
6362
6363 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6364 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6365 return -EOPNOTSUPP;
6366
6367 return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6368 threshold, hysteresis);
6369 }
6370
6371 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6372 {
6373 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6374 struct nlattr *cqm;
6375 int err;
6376
6377 cqm = info->attrs[NL80211_ATTR_CQM];
6378 if (!cqm) {
6379 err = -EINVAL;
6380 goto out;
6381 }
6382
6383 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6384 nl80211_attr_cqm_policy);
6385 if (err)
6386 goto out;
6387
6388 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6389 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6390 s32 threshold;
6391 u32 hysteresis;
6392 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6393 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6394 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6395 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6396 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6397 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6398 u32 rate, pkts, intvl;
6399 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6400 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6401 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6402 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6403 } else
6404 err = -EINVAL;
6405
6406 out:
6407 return err;
6408 }
6409
6410 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6411 {
6412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6413 struct net_device *dev = info->user_ptr[1];
6414 struct mesh_config cfg;
6415 struct mesh_setup setup;
6416 int err;
6417
6418 /* start with default */
6419 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6420 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6421
6422 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6423 /* and parse parameters if given */
6424 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6425 if (err)
6426 return err;
6427 }
6428
6429 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6430 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6431 return -EINVAL;
6432
6433 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6434 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6435
6436 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6437 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6438 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6439 return -EINVAL;
6440
6441 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6442 /* parse additional setup parameters if given */
6443 err = nl80211_parse_mesh_setup(info, &setup);
6444 if (err)
6445 return err;
6446 }
6447
6448 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6449 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6450
6451 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6452 !nl80211_valid_channel_type(info, &channel_type))
6453 return -EINVAL;
6454
6455 setup.channel = rdev_freq_to_chan(rdev,
6456 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6457 channel_type);
6458 if (!setup.channel)
6459 return -EINVAL;
6460 setup.channel_type = channel_type;
6461 } else {
6462 /* cfg80211_join_mesh() will sort it out */
6463 setup.channel = NULL;
6464 }
6465
6466 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6467 }
6468
6469 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6470 {
6471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6472 struct net_device *dev = info->user_ptr[1];
6473
6474 return cfg80211_leave_mesh(rdev, dev);
6475 }
6476
6477 #ifdef CONFIG_PM
6478 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6479 {
6480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6481 struct sk_buff *msg;
6482 void *hdr;
6483
6484 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6485 return -EOPNOTSUPP;
6486
6487 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6488 if (!msg)
6489 return -ENOMEM;
6490
6491 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6492 NL80211_CMD_GET_WOWLAN);
6493 if (!hdr)
6494 goto nla_put_failure;
6495
6496 if (rdev->wowlan) {
6497 struct nlattr *nl_wowlan;
6498
6499 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6500 if (!nl_wowlan)
6501 goto nla_put_failure;
6502
6503 if ((rdev->wowlan->any &&
6504 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6505 (rdev->wowlan->disconnect &&
6506 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6507 (rdev->wowlan->magic_pkt &&
6508 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6509 (rdev->wowlan->gtk_rekey_failure &&
6510 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6511 (rdev->wowlan->eap_identity_req &&
6512 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6513 (rdev->wowlan->four_way_handshake &&
6514 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6515 (rdev->wowlan->rfkill_release &&
6516 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6517 goto nla_put_failure;
6518 if (rdev->wowlan->n_patterns) {
6519 struct nlattr *nl_pats, *nl_pat;
6520 int i, pat_len;
6521
6522 nl_pats = nla_nest_start(msg,
6523 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6524 if (!nl_pats)
6525 goto nla_put_failure;
6526
6527 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6528 nl_pat = nla_nest_start(msg, i + 1);
6529 if (!nl_pat)
6530 goto nla_put_failure;
6531 pat_len = rdev->wowlan->patterns[i].pattern_len;
6532 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6533 DIV_ROUND_UP(pat_len, 8),
6534 rdev->wowlan->patterns[i].mask) ||
6535 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6536 pat_len,
6537 rdev->wowlan->patterns[i].pattern))
6538 goto nla_put_failure;
6539 nla_nest_end(msg, nl_pat);
6540 }
6541 nla_nest_end(msg, nl_pats);
6542 }
6543
6544 nla_nest_end(msg, nl_wowlan);
6545 }
6546
6547 genlmsg_end(msg, hdr);
6548 return genlmsg_reply(msg, info);
6549
6550 nla_put_failure:
6551 nlmsg_free(msg);
6552 return -ENOBUFS;
6553 }
6554
6555 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6556 {
6557 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6558 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6559 struct cfg80211_wowlan new_triggers = {};
6560 struct cfg80211_wowlan *ntrig;
6561 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6562 int err, i;
6563 bool prev_enabled = rdev->wowlan;
6564
6565 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6566 return -EOPNOTSUPP;
6567
6568 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6569 cfg80211_rdev_free_wowlan(rdev);
6570 rdev->wowlan = NULL;
6571 goto set_wakeup;
6572 }
6573
6574 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6575 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6576 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6577 nl80211_wowlan_policy);
6578 if (err)
6579 return err;
6580
6581 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6582 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6583 return -EINVAL;
6584 new_triggers.any = true;
6585 }
6586
6587 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6588 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6589 return -EINVAL;
6590 new_triggers.disconnect = true;
6591 }
6592
6593 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6594 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6595 return -EINVAL;
6596 new_triggers.magic_pkt = true;
6597 }
6598
6599 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6600 return -EINVAL;
6601
6602 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6603 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6604 return -EINVAL;
6605 new_triggers.gtk_rekey_failure = true;
6606 }
6607
6608 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6609 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6610 return -EINVAL;
6611 new_triggers.eap_identity_req = true;
6612 }
6613
6614 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6615 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6616 return -EINVAL;
6617 new_triggers.four_way_handshake = true;
6618 }
6619
6620 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6621 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6622 return -EINVAL;
6623 new_triggers.rfkill_release = true;
6624 }
6625
6626 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6627 struct nlattr *pat;
6628 int n_patterns = 0;
6629 int rem, pat_len, mask_len;
6630 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6631
6632 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6633 rem)
6634 n_patterns++;
6635 if (n_patterns > wowlan->n_patterns)
6636 return -EINVAL;
6637
6638 new_triggers.patterns = kcalloc(n_patterns,
6639 sizeof(new_triggers.patterns[0]),
6640 GFP_KERNEL);
6641 if (!new_triggers.patterns)
6642 return -ENOMEM;
6643
6644 new_triggers.n_patterns = n_patterns;
6645 i = 0;
6646
6647 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6648 rem) {
6649 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6650 nla_data(pat), nla_len(pat), NULL);
6651 err = -EINVAL;
6652 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6653 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6654 goto error;
6655 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6656 mask_len = DIV_ROUND_UP(pat_len, 8);
6657 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6658 mask_len)
6659 goto error;
6660 if (pat_len > wowlan->pattern_max_len ||
6661 pat_len < wowlan->pattern_min_len)
6662 goto error;
6663
6664 new_triggers.patterns[i].mask =
6665 kmalloc(mask_len + pat_len, GFP_KERNEL);
6666 if (!new_triggers.patterns[i].mask) {
6667 err = -ENOMEM;
6668 goto error;
6669 }
6670 new_triggers.patterns[i].pattern =
6671 new_triggers.patterns[i].mask + mask_len;
6672 memcpy(new_triggers.patterns[i].mask,
6673 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6674 mask_len);
6675 new_triggers.patterns[i].pattern_len = pat_len;
6676 memcpy(new_triggers.patterns[i].pattern,
6677 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6678 pat_len);
6679 i++;
6680 }
6681 }
6682
6683 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6684 if (!ntrig) {
6685 err = -ENOMEM;
6686 goto error;
6687 }
6688 cfg80211_rdev_free_wowlan(rdev);
6689 rdev->wowlan = ntrig;
6690
6691 set_wakeup:
6692 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6693 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6694
6695 return 0;
6696 error:
6697 for (i = 0; i < new_triggers.n_patterns; i++)
6698 kfree(new_triggers.patterns[i].mask);
6699 kfree(new_triggers.patterns);
6700 return err;
6701 }
6702 #endif
6703
6704 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6705 {
6706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6707 struct net_device *dev = info->user_ptr[1];
6708 struct wireless_dev *wdev = dev->ieee80211_ptr;
6709 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6710 struct cfg80211_gtk_rekey_data rekey_data;
6711 int err;
6712
6713 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6714 return -EINVAL;
6715
6716 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6717 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6718 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6719 nl80211_rekey_policy);
6720 if (err)
6721 return err;
6722
6723 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6724 return -ERANGE;
6725 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6726 return -ERANGE;
6727 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6728 return -ERANGE;
6729
6730 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6731 NL80211_KEK_LEN);
6732 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6733 NL80211_KCK_LEN);
6734 memcpy(rekey_data.replay_ctr,
6735 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6736 NL80211_REPLAY_CTR_LEN);
6737
6738 wdev_lock(wdev);
6739 if (!wdev->current_bss) {
6740 err = -ENOTCONN;
6741 goto out;
6742 }
6743
6744 if (!rdev->ops->set_rekey_data) {
6745 err = -EOPNOTSUPP;
6746 goto out;
6747 }
6748
6749 err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6750 out:
6751 wdev_unlock(wdev);
6752 return err;
6753 }
6754
6755 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6756 struct genl_info *info)
6757 {
6758 struct net_device *dev = info->user_ptr[1];
6759 struct wireless_dev *wdev = dev->ieee80211_ptr;
6760
6761 if (wdev->iftype != NL80211_IFTYPE_AP &&
6762 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6763 return -EINVAL;
6764
6765 if (wdev->ap_unexpected_nlpid)
6766 return -EBUSY;
6767
6768 wdev->ap_unexpected_nlpid = info->snd_pid;
6769 return 0;
6770 }
6771
6772 static int nl80211_probe_client(struct sk_buff *skb,
6773 struct genl_info *info)
6774 {
6775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6776 struct net_device *dev = info->user_ptr[1];
6777 struct wireless_dev *wdev = dev->ieee80211_ptr;
6778 struct sk_buff *msg;
6779 void *hdr;
6780 const u8 *addr;
6781 u64 cookie;
6782 int err;
6783
6784 if (wdev->iftype != NL80211_IFTYPE_AP &&
6785 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6786 return -EOPNOTSUPP;
6787
6788 if (!info->attrs[NL80211_ATTR_MAC])
6789 return -EINVAL;
6790
6791 if (!rdev->ops->probe_client)
6792 return -EOPNOTSUPP;
6793
6794 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6795 if (!msg)
6796 return -ENOMEM;
6797
6798 hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
6799 NL80211_CMD_PROBE_CLIENT);
6800
6801 if (IS_ERR(hdr)) {
6802 err = PTR_ERR(hdr);
6803 goto free_msg;
6804 }
6805
6806 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6807
6808 err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6809 if (err)
6810 goto free_msg;
6811
6812 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6813 goto nla_put_failure;
6814
6815 genlmsg_end(msg, hdr);
6816
6817 return genlmsg_reply(msg, info);
6818
6819 nla_put_failure:
6820 err = -ENOBUFS;
6821 free_msg:
6822 nlmsg_free(msg);
6823 return err;
6824 }
6825
6826 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6827 {
6828 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6829
6830 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6831 return -EOPNOTSUPP;
6832
6833 if (rdev->ap_beacons_nlpid)
6834 return -EBUSY;
6835
6836 rdev->ap_beacons_nlpid = info->snd_pid;
6837
6838 return 0;
6839 }
6840
6841 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
6842 {
6843 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6844 struct wireless_dev *wdev = info->user_ptr[1];
6845 int err;
6846
6847 if (!rdev->ops->start_p2p_device)
6848 return -EOPNOTSUPP;
6849
6850 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6851 return -EOPNOTSUPP;
6852
6853 if (wdev->p2p_started)
6854 return 0;
6855
6856 mutex_lock(&rdev->devlist_mtx);
6857 err = cfg80211_can_add_interface(rdev, wdev->iftype);
6858 mutex_unlock(&rdev->devlist_mtx);
6859 if (err)
6860 return err;
6861
6862 err = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
6863 if (err)
6864 return err;
6865
6866 wdev->p2p_started = true;
6867 mutex_lock(&rdev->devlist_mtx);
6868 rdev->opencount++;
6869 mutex_unlock(&rdev->devlist_mtx);
6870
6871 return 0;
6872 }
6873
6874 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
6875 {
6876 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6877 struct wireless_dev *wdev = info->user_ptr[1];
6878
6879 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6880 return -EOPNOTSUPP;
6881
6882 if (!rdev->ops->stop_p2p_device)
6883 return -EOPNOTSUPP;
6884
6885 if (!wdev->p2p_started)
6886 return 0;
6887
6888 rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
6889 wdev->p2p_started = false;
6890
6891 mutex_lock(&rdev->devlist_mtx);
6892 rdev->opencount--;
6893 mutex_unlock(&rdev->devlist_mtx);
6894
6895 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
6896 rdev->scan_req->aborted = true;
6897 ___cfg80211_scan_done(rdev, true);
6898 }
6899
6900 return 0;
6901 }
6902
6903 #define NL80211_FLAG_NEED_WIPHY 0x01
6904 #define NL80211_FLAG_NEED_NETDEV 0x02
6905 #define NL80211_FLAG_NEED_RTNL 0x04
6906 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6907 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6908 NL80211_FLAG_CHECK_NETDEV_UP)
6909 #define NL80211_FLAG_NEED_WDEV 0x10
6910 /* If a netdev is associated, it must be UP, P2P must be started */
6911 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
6912 NL80211_FLAG_CHECK_NETDEV_UP)
6913
6914 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6915 struct genl_info *info)
6916 {
6917 struct cfg80211_registered_device *rdev;
6918 struct wireless_dev *wdev;
6919 struct net_device *dev;
6920 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6921
6922 if (rtnl)
6923 rtnl_lock();
6924
6925 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6926 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6927 if (IS_ERR(rdev)) {
6928 if (rtnl)
6929 rtnl_unlock();
6930 return PTR_ERR(rdev);
6931 }
6932 info->user_ptr[0] = rdev;
6933 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
6934 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
6935 mutex_lock(&cfg80211_mutex);
6936 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
6937 info->attrs);
6938 if (IS_ERR(wdev)) {
6939 mutex_unlock(&cfg80211_mutex);
6940 if (rtnl)
6941 rtnl_unlock();
6942 return PTR_ERR(wdev);
6943 }
6944
6945 dev = wdev->netdev;
6946 rdev = wiphy_to_dev(wdev->wiphy);
6947
6948 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
6949 if (!dev) {
6950 mutex_unlock(&cfg80211_mutex);
6951 if (rtnl)
6952 rtnl_unlock();
6953 return -EINVAL;
6954 }
6955
6956 info->user_ptr[1] = dev;
6957 } else {
6958 info->user_ptr[1] = wdev;
6959 }
6960
6961 if (dev) {
6962 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
6963 !netif_running(dev)) {
6964 mutex_unlock(&cfg80211_mutex);
6965 if (rtnl)
6966 rtnl_unlock();
6967 return -ENETDOWN;
6968 }
6969
6970 dev_hold(dev);
6971 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
6972 if (!wdev->p2p_started) {
6973 mutex_unlock(&cfg80211_mutex);
6974 if (rtnl)
6975 rtnl_unlock();
6976 return -ENETDOWN;
6977 }
6978 }
6979
6980 cfg80211_lock_rdev(rdev);
6981
6982 mutex_unlock(&cfg80211_mutex);
6983
6984 info->user_ptr[0] = rdev;
6985 }
6986
6987 return 0;
6988 }
6989
6990 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
6991 struct genl_info *info)
6992 {
6993 if (info->user_ptr[0])
6994 cfg80211_unlock_rdev(info->user_ptr[0]);
6995 if (info->user_ptr[1]) {
6996 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
6997 struct wireless_dev *wdev = info->user_ptr[1];
6998
6999 if (wdev->netdev)
7000 dev_put(wdev->netdev);
7001 } else {
7002 dev_put(info->user_ptr[1]);
7003 }
7004 }
7005 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7006 rtnl_unlock();
7007 }
7008
7009 static struct genl_ops nl80211_ops[] = {
7010 {
7011 .cmd = NL80211_CMD_GET_WIPHY,
7012 .doit = nl80211_get_wiphy,
7013 .dumpit = nl80211_dump_wiphy,
7014 .policy = nl80211_policy,
7015 /* can be retrieved by unprivileged users */
7016 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7017 },
7018 {
7019 .cmd = NL80211_CMD_SET_WIPHY,
7020 .doit = nl80211_set_wiphy,
7021 .policy = nl80211_policy,
7022 .flags = GENL_ADMIN_PERM,
7023 .internal_flags = NL80211_FLAG_NEED_RTNL,
7024 },
7025 {
7026 .cmd = NL80211_CMD_GET_INTERFACE,
7027 .doit = nl80211_get_interface,
7028 .dumpit = nl80211_dump_interface,
7029 .policy = nl80211_policy,
7030 /* can be retrieved by unprivileged users */
7031 .internal_flags = NL80211_FLAG_NEED_WDEV,
7032 },
7033 {
7034 .cmd = NL80211_CMD_SET_INTERFACE,
7035 .doit = nl80211_set_interface,
7036 .policy = nl80211_policy,
7037 .flags = GENL_ADMIN_PERM,
7038 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7039 NL80211_FLAG_NEED_RTNL,
7040 },
7041 {
7042 .cmd = NL80211_CMD_NEW_INTERFACE,
7043 .doit = nl80211_new_interface,
7044 .policy = nl80211_policy,
7045 .flags = GENL_ADMIN_PERM,
7046 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7047 NL80211_FLAG_NEED_RTNL,
7048 },
7049 {
7050 .cmd = NL80211_CMD_DEL_INTERFACE,
7051 .doit = nl80211_del_interface,
7052 .policy = nl80211_policy,
7053 .flags = GENL_ADMIN_PERM,
7054 .internal_flags = NL80211_FLAG_NEED_WDEV |
7055 NL80211_FLAG_NEED_RTNL,
7056 },
7057 {
7058 .cmd = NL80211_CMD_GET_KEY,
7059 .doit = nl80211_get_key,
7060 .policy = nl80211_policy,
7061 .flags = GENL_ADMIN_PERM,
7062 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7063 NL80211_FLAG_NEED_RTNL,
7064 },
7065 {
7066 .cmd = NL80211_CMD_SET_KEY,
7067 .doit = nl80211_set_key,
7068 .policy = nl80211_policy,
7069 .flags = GENL_ADMIN_PERM,
7070 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7071 NL80211_FLAG_NEED_RTNL,
7072 },
7073 {
7074 .cmd = NL80211_CMD_NEW_KEY,
7075 .doit = nl80211_new_key,
7076 .policy = nl80211_policy,
7077 .flags = GENL_ADMIN_PERM,
7078 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7079 NL80211_FLAG_NEED_RTNL,
7080 },
7081 {
7082 .cmd = NL80211_CMD_DEL_KEY,
7083 .doit = nl80211_del_key,
7084 .policy = nl80211_policy,
7085 .flags = GENL_ADMIN_PERM,
7086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7087 NL80211_FLAG_NEED_RTNL,
7088 },
7089 {
7090 .cmd = NL80211_CMD_SET_BEACON,
7091 .policy = nl80211_policy,
7092 .flags = GENL_ADMIN_PERM,
7093 .doit = nl80211_set_beacon,
7094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7095 NL80211_FLAG_NEED_RTNL,
7096 },
7097 {
7098 .cmd = NL80211_CMD_START_AP,
7099 .policy = nl80211_policy,
7100 .flags = GENL_ADMIN_PERM,
7101 .doit = nl80211_start_ap,
7102 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7103 NL80211_FLAG_NEED_RTNL,
7104 },
7105 {
7106 .cmd = NL80211_CMD_STOP_AP,
7107 .policy = nl80211_policy,
7108 .flags = GENL_ADMIN_PERM,
7109 .doit = nl80211_stop_ap,
7110 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7111 NL80211_FLAG_NEED_RTNL,
7112 },
7113 {
7114 .cmd = NL80211_CMD_GET_STATION,
7115 .doit = nl80211_get_station,
7116 .dumpit = nl80211_dump_station,
7117 .policy = nl80211_policy,
7118 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7119 NL80211_FLAG_NEED_RTNL,
7120 },
7121 {
7122 .cmd = NL80211_CMD_SET_STATION,
7123 .doit = nl80211_set_station,
7124 .policy = nl80211_policy,
7125 .flags = GENL_ADMIN_PERM,
7126 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7127 NL80211_FLAG_NEED_RTNL,
7128 },
7129 {
7130 .cmd = NL80211_CMD_NEW_STATION,
7131 .doit = nl80211_new_station,
7132 .policy = nl80211_policy,
7133 .flags = GENL_ADMIN_PERM,
7134 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7135 NL80211_FLAG_NEED_RTNL,
7136 },
7137 {
7138 .cmd = NL80211_CMD_DEL_STATION,
7139 .doit = nl80211_del_station,
7140 .policy = nl80211_policy,
7141 .flags = GENL_ADMIN_PERM,
7142 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7143 NL80211_FLAG_NEED_RTNL,
7144 },
7145 {
7146 .cmd = NL80211_CMD_GET_MPATH,
7147 .doit = nl80211_get_mpath,
7148 .dumpit = nl80211_dump_mpath,
7149 .policy = nl80211_policy,
7150 .flags = GENL_ADMIN_PERM,
7151 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7152 NL80211_FLAG_NEED_RTNL,
7153 },
7154 {
7155 .cmd = NL80211_CMD_SET_MPATH,
7156 .doit = nl80211_set_mpath,
7157 .policy = nl80211_policy,
7158 .flags = GENL_ADMIN_PERM,
7159 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7160 NL80211_FLAG_NEED_RTNL,
7161 },
7162 {
7163 .cmd = NL80211_CMD_NEW_MPATH,
7164 .doit = nl80211_new_mpath,
7165 .policy = nl80211_policy,
7166 .flags = GENL_ADMIN_PERM,
7167 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7168 NL80211_FLAG_NEED_RTNL,
7169 },
7170 {
7171 .cmd = NL80211_CMD_DEL_MPATH,
7172 .doit = nl80211_del_mpath,
7173 .policy = nl80211_policy,
7174 .flags = GENL_ADMIN_PERM,
7175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7176 NL80211_FLAG_NEED_RTNL,
7177 },
7178 {
7179 .cmd = NL80211_CMD_SET_BSS,
7180 .doit = nl80211_set_bss,
7181 .policy = nl80211_policy,
7182 .flags = GENL_ADMIN_PERM,
7183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7184 NL80211_FLAG_NEED_RTNL,
7185 },
7186 {
7187 .cmd = NL80211_CMD_GET_REG,
7188 .doit = nl80211_get_reg,
7189 .policy = nl80211_policy,
7190 /* can be retrieved by unprivileged users */
7191 },
7192 {
7193 .cmd = NL80211_CMD_SET_REG,
7194 .doit = nl80211_set_reg,
7195 .policy = nl80211_policy,
7196 .flags = GENL_ADMIN_PERM,
7197 },
7198 {
7199 .cmd = NL80211_CMD_REQ_SET_REG,
7200 .doit = nl80211_req_set_reg,
7201 .policy = nl80211_policy,
7202 .flags = GENL_ADMIN_PERM,
7203 },
7204 {
7205 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7206 .doit = nl80211_get_mesh_config,
7207 .policy = nl80211_policy,
7208 /* can be retrieved by unprivileged users */
7209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7210 NL80211_FLAG_NEED_RTNL,
7211 },
7212 {
7213 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7214 .doit = nl80211_update_mesh_config,
7215 .policy = nl80211_policy,
7216 .flags = GENL_ADMIN_PERM,
7217 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7218 NL80211_FLAG_NEED_RTNL,
7219 },
7220 {
7221 .cmd = NL80211_CMD_TRIGGER_SCAN,
7222 .doit = nl80211_trigger_scan,
7223 .policy = nl80211_policy,
7224 .flags = GENL_ADMIN_PERM,
7225 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7226 NL80211_FLAG_NEED_RTNL,
7227 },
7228 {
7229 .cmd = NL80211_CMD_GET_SCAN,
7230 .policy = nl80211_policy,
7231 .dumpit = nl80211_dump_scan,
7232 },
7233 {
7234 .cmd = NL80211_CMD_START_SCHED_SCAN,
7235 .doit = nl80211_start_sched_scan,
7236 .policy = nl80211_policy,
7237 .flags = GENL_ADMIN_PERM,
7238 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7239 NL80211_FLAG_NEED_RTNL,
7240 },
7241 {
7242 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7243 .doit = nl80211_stop_sched_scan,
7244 .policy = nl80211_policy,
7245 .flags = GENL_ADMIN_PERM,
7246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7247 NL80211_FLAG_NEED_RTNL,
7248 },
7249 {
7250 .cmd = NL80211_CMD_AUTHENTICATE,
7251 .doit = nl80211_authenticate,
7252 .policy = nl80211_policy,
7253 .flags = GENL_ADMIN_PERM,
7254 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7255 NL80211_FLAG_NEED_RTNL,
7256 },
7257 {
7258 .cmd = NL80211_CMD_ASSOCIATE,
7259 .doit = nl80211_associate,
7260 .policy = nl80211_policy,
7261 .flags = GENL_ADMIN_PERM,
7262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7263 NL80211_FLAG_NEED_RTNL,
7264 },
7265 {
7266 .cmd = NL80211_CMD_DEAUTHENTICATE,
7267 .doit = nl80211_deauthenticate,
7268 .policy = nl80211_policy,
7269 .flags = GENL_ADMIN_PERM,
7270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7271 NL80211_FLAG_NEED_RTNL,
7272 },
7273 {
7274 .cmd = NL80211_CMD_DISASSOCIATE,
7275 .doit = nl80211_disassociate,
7276 .policy = nl80211_policy,
7277 .flags = GENL_ADMIN_PERM,
7278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7279 NL80211_FLAG_NEED_RTNL,
7280 },
7281 {
7282 .cmd = NL80211_CMD_JOIN_IBSS,
7283 .doit = nl80211_join_ibss,
7284 .policy = nl80211_policy,
7285 .flags = GENL_ADMIN_PERM,
7286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7287 NL80211_FLAG_NEED_RTNL,
7288 },
7289 {
7290 .cmd = NL80211_CMD_LEAVE_IBSS,
7291 .doit = nl80211_leave_ibss,
7292 .policy = nl80211_policy,
7293 .flags = GENL_ADMIN_PERM,
7294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7295 NL80211_FLAG_NEED_RTNL,
7296 },
7297 #ifdef CONFIG_NL80211_TESTMODE
7298 {
7299 .cmd = NL80211_CMD_TESTMODE,
7300 .doit = nl80211_testmode_do,
7301 .dumpit = nl80211_testmode_dump,
7302 .policy = nl80211_policy,
7303 .flags = GENL_ADMIN_PERM,
7304 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7305 NL80211_FLAG_NEED_RTNL,
7306 },
7307 #endif
7308 {
7309 .cmd = NL80211_CMD_CONNECT,
7310 .doit = nl80211_connect,
7311 .policy = nl80211_policy,
7312 .flags = GENL_ADMIN_PERM,
7313 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7314 NL80211_FLAG_NEED_RTNL,
7315 },
7316 {
7317 .cmd = NL80211_CMD_DISCONNECT,
7318 .doit = nl80211_disconnect,
7319 .policy = nl80211_policy,
7320 .flags = GENL_ADMIN_PERM,
7321 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7322 NL80211_FLAG_NEED_RTNL,
7323 },
7324 {
7325 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7326 .doit = nl80211_wiphy_netns,
7327 .policy = nl80211_policy,
7328 .flags = GENL_ADMIN_PERM,
7329 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7330 NL80211_FLAG_NEED_RTNL,
7331 },
7332 {
7333 .cmd = NL80211_CMD_GET_SURVEY,
7334 .policy = nl80211_policy,
7335 .dumpit = nl80211_dump_survey,
7336 },
7337 {
7338 .cmd = NL80211_CMD_SET_PMKSA,
7339 .doit = nl80211_setdel_pmksa,
7340 .policy = nl80211_policy,
7341 .flags = GENL_ADMIN_PERM,
7342 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7343 NL80211_FLAG_NEED_RTNL,
7344 },
7345 {
7346 .cmd = NL80211_CMD_DEL_PMKSA,
7347 .doit = nl80211_setdel_pmksa,
7348 .policy = nl80211_policy,
7349 .flags = GENL_ADMIN_PERM,
7350 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7351 NL80211_FLAG_NEED_RTNL,
7352 },
7353 {
7354 .cmd = NL80211_CMD_FLUSH_PMKSA,
7355 .doit = nl80211_flush_pmksa,
7356 .policy = nl80211_policy,
7357 .flags = GENL_ADMIN_PERM,
7358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7359 NL80211_FLAG_NEED_RTNL,
7360 },
7361 {
7362 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7363 .doit = nl80211_remain_on_channel,
7364 .policy = nl80211_policy,
7365 .flags = GENL_ADMIN_PERM,
7366 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7367 NL80211_FLAG_NEED_RTNL,
7368 },
7369 {
7370 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7371 .doit = nl80211_cancel_remain_on_channel,
7372 .policy = nl80211_policy,
7373 .flags = GENL_ADMIN_PERM,
7374 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7375 NL80211_FLAG_NEED_RTNL,
7376 },
7377 {
7378 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7379 .doit = nl80211_set_tx_bitrate_mask,
7380 .policy = nl80211_policy,
7381 .flags = GENL_ADMIN_PERM,
7382 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7383 NL80211_FLAG_NEED_RTNL,
7384 },
7385 {
7386 .cmd = NL80211_CMD_REGISTER_FRAME,
7387 .doit = nl80211_register_mgmt,
7388 .policy = nl80211_policy,
7389 .flags = GENL_ADMIN_PERM,
7390 .internal_flags = NL80211_FLAG_NEED_WDEV |
7391 NL80211_FLAG_NEED_RTNL,
7392 },
7393 {
7394 .cmd = NL80211_CMD_FRAME,
7395 .doit = nl80211_tx_mgmt,
7396 .policy = nl80211_policy,
7397 .flags = GENL_ADMIN_PERM,
7398 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7399 NL80211_FLAG_NEED_RTNL,
7400 },
7401 {
7402 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7403 .doit = nl80211_tx_mgmt_cancel_wait,
7404 .policy = nl80211_policy,
7405 .flags = GENL_ADMIN_PERM,
7406 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7407 NL80211_FLAG_NEED_RTNL,
7408 },
7409 {
7410 .cmd = NL80211_CMD_SET_POWER_SAVE,
7411 .doit = nl80211_set_power_save,
7412 .policy = nl80211_policy,
7413 .flags = GENL_ADMIN_PERM,
7414 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7415 NL80211_FLAG_NEED_RTNL,
7416 },
7417 {
7418 .cmd = NL80211_CMD_GET_POWER_SAVE,
7419 .doit = nl80211_get_power_save,
7420 .policy = nl80211_policy,
7421 /* can be retrieved by unprivileged users */
7422 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7423 NL80211_FLAG_NEED_RTNL,
7424 },
7425 {
7426 .cmd = NL80211_CMD_SET_CQM,
7427 .doit = nl80211_set_cqm,
7428 .policy = nl80211_policy,
7429 .flags = GENL_ADMIN_PERM,
7430 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7431 NL80211_FLAG_NEED_RTNL,
7432 },
7433 {
7434 .cmd = NL80211_CMD_SET_CHANNEL,
7435 .doit = nl80211_set_channel,
7436 .policy = nl80211_policy,
7437 .flags = GENL_ADMIN_PERM,
7438 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7439 NL80211_FLAG_NEED_RTNL,
7440 },
7441 {
7442 .cmd = NL80211_CMD_SET_WDS_PEER,
7443 .doit = nl80211_set_wds_peer,
7444 .policy = nl80211_policy,
7445 .flags = GENL_ADMIN_PERM,
7446 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7447 NL80211_FLAG_NEED_RTNL,
7448 },
7449 {
7450 .cmd = NL80211_CMD_JOIN_MESH,
7451 .doit = nl80211_join_mesh,
7452 .policy = nl80211_policy,
7453 .flags = GENL_ADMIN_PERM,
7454 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7455 NL80211_FLAG_NEED_RTNL,
7456 },
7457 {
7458 .cmd = NL80211_CMD_LEAVE_MESH,
7459 .doit = nl80211_leave_mesh,
7460 .policy = nl80211_policy,
7461 .flags = GENL_ADMIN_PERM,
7462 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7463 NL80211_FLAG_NEED_RTNL,
7464 },
7465 #ifdef CONFIG_PM
7466 {
7467 .cmd = NL80211_CMD_GET_WOWLAN,
7468 .doit = nl80211_get_wowlan,
7469 .policy = nl80211_policy,
7470 /* can be retrieved by unprivileged users */
7471 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7472 NL80211_FLAG_NEED_RTNL,
7473 },
7474 {
7475 .cmd = NL80211_CMD_SET_WOWLAN,
7476 .doit = nl80211_set_wowlan,
7477 .policy = nl80211_policy,
7478 .flags = GENL_ADMIN_PERM,
7479 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7480 NL80211_FLAG_NEED_RTNL,
7481 },
7482 #endif
7483 {
7484 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7485 .doit = nl80211_set_rekey_data,
7486 .policy = nl80211_policy,
7487 .flags = GENL_ADMIN_PERM,
7488 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7489 NL80211_FLAG_NEED_RTNL,
7490 },
7491 {
7492 .cmd = NL80211_CMD_TDLS_MGMT,
7493 .doit = nl80211_tdls_mgmt,
7494 .policy = nl80211_policy,
7495 .flags = GENL_ADMIN_PERM,
7496 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7497 NL80211_FLAG_NEED_RTNL,
7498 },
7499 {
7500 .cmd = NL80211_CMD_TDLS_OPER,
7501 .doit = nl80211_tdls_oper,
7502 .policy = nl80211_policy,
7503 .flags = GENL_ADMIN_PERM,
7504 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7505 NL80211_FLAG_NEED_RTNL,
7506 },
7507 {
7508 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7509 .doit = nl80211_register_unexpected_frame,
7510 .policy = nl80211_policy,
7511 .flags = GENL_ADMIN_PERM,
7512 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7513 NL80211_FLAG_NEED_RTNL,
7514 },
7515 {
7516 .cmd = NL80211_CMD_PROBE_CLIENT,
7517 .doit = nl80211_probe_client,
7518 .policy = nl80211_policy,
7519 .flags = GENL_ADMIN_PERM,
7520 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7521 NL80211_FLAG_NEED_RTNL,
7522 },
7523 {
7524 .cmd = NL80211_CMD_REGISTER_BEACONS,
7525 .doit = nl80211_register_beacons,
7526 .policy = nl80211_policy,
7527 .flags = GENL_ADMIN_PERM,
7528 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7529 NL80211_FLAG_NEED_RTNL,
7530 },
7531 {
7532 .cmd = NL80211_CMD_SET_NOACK_MAP,
7533 .doit = nl80211_set_noack_map,
7534 .policy = nl80211_policy,
7535 .flags = GENL_ADMIN_PERM,
7536 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7537 NL80211_FLAG_NEED_RTNL,
7538 },
7539 {
7540 .cmd = NL80211_CMD_START_P2P_DEVICE,
7541 .doit = nl80211_start_p2p_device,
7542 .policy = nl80211_policy,
7543 .flags = GENL_ADMIN_PERM,
7544 .internal_flags = NL80211_FLAG_NEED_WDEV |
7545 NL80211_FLAG_NEED_RTNL,
7546 },
7547 {
7548 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7549 .doit = nl80211_stop_p2p_device,
7550 .policy = nl80211_policy,
7551 .flags = GENL_ADMIN_PERM,
7552 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7553 NL80211_FLAG_NEED_RTNL,
7554 },
7555 };
7556
7557 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7558 .name = "mlme",
7559 };
7560
7561 /* multicast groups */
7562 static struct genl_multicast_group nl80211_config_mcgrp = {
7563 .name = "config",
7564 };
7565 static struct genl_multicast_group nl80211_scan_mcgrp = {
7566 .name = "scan",
7567 };
7568 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7569 .name = "regulatory",
7570 };
7571
7572 /* notification functions */
7573
7574 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7575 {
7576 struct sk_buff *msg;
7577
7578 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7579 if (!msg)
7580 return;
7581
7582 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7583 nlmsg_free(msg);
7584 return;
7585 }
7586
7587 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7588 nl80211_config_mcgrp.id, GFP_KERNEL);
7589 }
7590
7591 static int nl80211_add_scan_req(struct sk_buff *msg,
7592 struct cfg80211_registered_device *rdev)
7593 {
7594 struct cfg80211_scan_request *req = rdev->scan_req;
7595 struct nlattr *nest;
7596 int i;
7597
7598 ASSERT_RDEV_LOCK(rdev);
7599
7600 if (WARN_ON(!req))
7601 return 0;
7602
7603 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7604 if (!nest)
7605 goto nla_put_failure;
7606 for (i = 0; i < req->n_ssids; i++) {
7607 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7608 goto nla_put_failure;
7609 }
7610 nla_nest_end(msg, nest);
7611
7612 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7613 if (!nest)
7614 goto nla_put_failure;
7615 for (i = 0; i < req->n_channels; i++) {
7616 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7617 goto nla_put_failure;
7618 }
7619 nla_nest_end(msg, nest);
7620
7621 if (req->ie &&
7622 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7623 goto nla_put_failure;
7624
7625 return 0;
7626 nla_put_failure:
7627 return -ENOBUFS;
7628 }
7629
7630 static int nl80211_send_scan_msg(struct sk_buff *msg,
7631 struct cfg80211_registered_device *rdev,
7632 struct wireless_dev *wdev,
7633 u32 pid, u32 seq, int flags,
7634 u32 cmd)
7635 {
7636 void *hdr;
7637
7638 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7639 if (!hdr)
7640 return -1;
7641
7642 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7643 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7644 wdev->netdev->ifindex)) ||
7645 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7646 goto nla_put_failure;
7647
7648 /* ignore errors and send incomplete event anyway */
7649 nl80211_add_scan_req(msg, rdev);
7650
7651 return genlmsg_end(msg, hdr);
7652
7653 nla_put_failure:
7654 genlmsg_cancel(msg, hdr);
7655 return -EMSGSIZE;
7656 }
7657
7658 static int
7659 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7660 struct cfg80211_registered_device *rdev,
7661 struct net_device *netdev,
7662 u32 pid, u32 seq, int flags, u32 cmd)
7663 {
7664 void *hdr;
7665
7666 hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
7667 if (!hdr)
7668 return -1;
7669
7670 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7671 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7672 goto nla_put_failure;
7673
7674 return genlmsg_end(msg, hdr);
7675
7676 nla_put_failure:
7677 genlmsg_cancel(msg, hdr);
7678 return -EMSGSIZE;
7679 }
7680
7681 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7682 struct wireless_dev *wdev)
7683 {
7684 struct sk_buff *msg;
7685
7686 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7687 if (!msg)
7688 return;
7689
7690 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7691 NL80211_CMD_TRIGGER_SCAN) < 0) {
7692 nlmsg_free(msg);
7693 return;
7694 }
7695
7696 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7697 nl80211_scan_mcgrp.id, GFP_KERNEL);
7698 }
7699
7700 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7701 struct wireless_dev *wdev)
7702 {
7703 struct sk_buff *msg;
7704
7705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7706 if (!msg)
7707 return;
7708
7709 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7710 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7711 nlmsg_free(msg);
7712 return;
7713 }
7714
7715 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7716 nl80211_scan_mcgrp.id, GFP_KERNEL);
7717 }
7718
7719 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7720 struct wireless_dev *wdev)
7721 {
7722 struct sk_buff *msg;
7723
7724 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7725 if (!msg)
7726 return;
7727
7728 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7729 NL80211_CMD_SCAN_ABORTED) < 0) {
7730 nlmsg_free(msg);
7731 return;
7732 }
7733
7734 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7735 nl80211_scan_mcgrp.id, GFP_KERNEL);
7736 }
7737
7738 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7739 struct net_device *netdev)
7740 {
7741 struct sk_buff *msg;
7742
7743 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7744 if (!msg)
7745 return;
7746
7747 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7748 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7749 nlmsg_free(msg);
7750 return;
7751 }
7752
7753 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7754 nl80211_scan_mcgrp.id, GFP_KERNEL);
7755 }
7756
7757 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7758 struct net_device *netdev, u32 cmd)
7759 {
7760 struct sk_buff *msg;
7761
7762 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7763 if (!msg)
7764 return;
7765
7766 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7767 nlmsg_free(msg);
7768 return;
7769 }
7770
7771 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7772 nl80211_scan_mcgrp.id, GFP_KERNEL);
7773 }
7774
7775 /*
7776 * This can happen on global regulatory changes or device specific settings
7777 * based on custom world regulatory domains.
7778 */
7779 void nl80211_send_reg_change_event(struct regulatory_request *request)
7780 {
7781 struct sk_buff *msg;
7782 void *hdr;
7783
7784 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7785 if (!msg)
7786 return;
7787
7788 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7789 if (!hdr) {
7790 nlmsg_free(msg);
7791 return;
7792 }
7793
7794 /* Userspace can always count this one always being set */
7795 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7796 goto nla_put_failure;
7797
7798 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7799 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7800 NL80211_REGDOM_TYPE_WORLD))
7801 goto nla_put_failure;
7802 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7803 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7804 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7805 goto nla_put_failure;
7806 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7807 request->intersect) {
7808 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7809 NL80211_REGDOM_TYPE_INTERSECTION))
7810 goto nla_put_failure;
7811 } else {
7812 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7813 NL80211_REGDOM_TYPE_COUNTRY) ||
7814 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7815 request->alpha2))
7816 goto nla_put_failure;
7817 }
7818
7819 if (wiphy_idx_valid(request->wiphy_idx) &&
7820 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7821 goto nla_put_failure;
7822
7823 genlmsg_end(msg, hdr);
7824
7825 rcu_read_lock();
7826 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7827 GFP_ATOMIC);
7828 rcu_read_unlock();
7829
7830 return;
7831
7832 nla_put_failure:
7833 genlmsg_cancel(msg, hdr);
7834 nlmsg_free(msg);
7835 }
7836
7837 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7838 struct net_device *netdev,
7839 const u8 *buf, size_t len,
7840 enum nl80211_commands cmd, gfp_t gfp)
7841 {
7842 struct sk_buff *msg;
7843 void *hdr;
7844
7845 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7846 if (!msg)
7847 return;
7848
7849 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7850 if (!hdr) {
7851 nlmsg_free(msg);
7852 return;
7853 }
7854
7855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7856 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7857 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7858 goto nla_put_failure;
7859
7860 genlmsg_end(msg, hdr);
7861
7862 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7863 nl80211_mlme_mcgrp.id, gfp);
7864 return;
7865
7866 nla_put_failure:
7867 genlmsg_cancel(msg, hdr);
7868 nlmsg_free(msg);
7869 }
7870
7871 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7872 struct net_device *netdev, const u8 *buf,
7873 size_t len, gfp_t gfp)
7874 {
7875 nl80211_send_mlme_event(rdev, netdev, buf, len,
7876 NL80211_CMD_AUTHENTICATE, gfp);
7877 }
7878
7879 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7880 struct net_device *netdev, const u8 *buf,
7881 size_t len, gfp_t gfp)
7882 {
7883 nl80211_send_mlme_event(rdev, netdev, buf, len,
7884 NL80211_CMD_ASSOCIATE, gfp);
7885 }
7886
7887 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7888 struct net_device *netdev, const u8 *buf,
7889 size_t len, gfp_t gfp)
7890 {
7891 nl80211_send_mlme_event(rdev, netdev, buf, len,
7892 NL80211_CMD_DEAUTHENTICATE, gfp);
7893 }
7894
7895 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7896 struct net_device *netdev, const u8 *buf,
7897 size_t len, gfp_t gfp)
7898 {
7899 nl80211_send_mlme_event(rdev, netdev, buf, len,
7900 NL80211_CMD_DISASSOCIATE, gfp);
7901 }
7902
7903 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7904 struct net_device *netdev, const u8 *buf,
7905 size_t len, gfp_t gfp)
7906 {
7907 nl80211_send_mlme_event(rdev, netdev, buf, len,
7908 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7909 }
7910
7911 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7912 struct net_device *netdev, const u8 *buf,
7913 size_t len, gfp_t gfp)
7914 {
7915 nl80211_send_mlme_event(rdev, netdev, buf, len,
7916 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7917 }
7918
7919 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7920 struct net_device *netdev, int cmd,
7921 const u8 *addr, gfp_t gfp)
7922 {
7923 struct sk_buff *msg;
7924 void *hdr;
7925
7926 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7927 if (!msg)
7928 return;
7929
7930 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7931 if (!hdr) {
7932 nlmsg_free(msg);
7933 return;
7934 }
7935
7936 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7937 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7938 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
7939 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
7940 goto nla_put_failure;
7941
7942 genlmsg_end(msg, hdr);
7943
7944 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7945 nl80211_mlme_mcgrp.id, gfp);
7946 return;
7947
7948 nla_put_failure:
7949 genlmsg_cancel(msg, hdr);
7950 nlmsg_free(msg);
7951 }
7952
7953 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
7954 struct net_device *netdev, const u8 *addr,
7955 gfp_t gfp)
7956 {
7957 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
7958 addr, gfp);
7959 }
7960
7961 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
7962 struct net_device *netdev, const u8 *addr,
7963 gfp_t gfp)
7964 {
7965 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
7966 addr, gfp);
7967 }
7968
7969 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
7970 struct net_device *netdev, const u8 *bssid,
7971 const u8 *req_ie, size_t req_ie_len,
7972 const u8 *resp_ie, size_t resp_ie_len,
7973 u16 status, gfp_t gfp)
7974 {
7975 struct sk_buff *msg;
7976 void *hdr;
7977
7978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7979 if (!msg)
7980 return;
7981
7982 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
7983 if (!hdr) {
7984 nlmsg_free(msg);
7985 return;
7986 }
7987
7988 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7989 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7990 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
7991 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
7992 (req_ie &&
7993 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
7994 (resp_ie &&
7995 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
7996 goto nla_put_failure;
7997
7998 genlmsg_end(msg, hdr);
7999
8000 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8001 nl80211_mlme_mcgrp.id, gfp);
8002 return;
8003
8004 nla_put_failure:
8005 genlmsg_cancel(msg, hdr);
8006 nlmsg_free(msg);
8007
8008 }
8009
8010 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8011 struct net_device *netdev, const u8 *bssid,
8012 const u8 *req_ie, size_t req_ie_len,
8013 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
8014 {
8015 struct sk_buff *msg;
8016 void *hdr;
8017
8018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8019 if (!msg)
8020 return;
8021
8022 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
8023 if (!hdr) {
8024 nlmsg_free(msg);
8025 return;
8026 }
8027
8028 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8029 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8030 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
8031 (req_ie &&
8032 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8033 (resp_ie &&
8034 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8035 goto nla_put_failure;
8036
8037 genlmsg_end(msg, hdr);
8038
8039 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8040 nl80211_mlme_mcgrp.id, gfp);
8041 return;
8042
8043 nla_put_failure:
8044 genlmsg_cancel(msg, hdr);
8045 nlmsg_free(msg);
8046
8047 }
8048
8049 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8050 struct net_device *netdev, u16 reason,
8051 const u8 *ie, size_t ie_len, bool from_ap)
8052 {
8053 struct sk_buff *msg;
8054 void *hdr;
8055
8056 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8057 if (!msg)
8058 return;
8059
8060 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8061 if (!hdr) {
8062 nlmsg_free(msg);
8063 return;
8064 }
8065
8066 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8067 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8068 (from_ap && reason &&
8069 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8070 (from_ap &&
8071 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8072 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8073 goto nla_put_failure;
8074
8075 genlmsg_end(msg, hdr);
8076
8077 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8078 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8079 return;
8080
8081 nla_put_failure:
8082 genlmsg_cancel(msg, hdr);
8083 nlmsg_free(msg);
8084
8085 }
8086
8087 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8088 struct net_device *netdev, const u8 *bssid,
8089 gfp_t gfp)
8090 {
8091 struct sk_buff *msg;
8092 void *hdr;
8093
8094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8095 if (!msg)
8096 return;
8097
8098 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8099 if (!hdr) {
8100 nlmsg_free(msg);
8101 return;
8102 }
8103
8104 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8105 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8106 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8107 goto nla_put_failure;
8108
8109 genlmsg_end(msg, hdr);
8110
8111 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8112 nl80211_mlme_mcgrp.id, gfp);
8113 return;
8114
8115 nla_put_failure:
8116 genlmsg_cancel(msg, hdr);
8117 nlmsg_free(msg);
8118 }
8119
8120 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8121 struct net_device *netdev,
8122 const u8 *macaddr, const u8* ie, u8 ie_len,
8123 gfp_t gfp)
8124 {
8125 struct sk_buff *msg;
8126 void *hdr;
8127
8128 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8129 if (!msg)
8130 return;
8131
8132 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8133 if (!hdr) {
8134 nlmsg_free(msg);
8135 return;
8136 }
8137
8138 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8139 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8140 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8141 (ie_len && ie &&
8142 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8143 goto nla_put_failure;
8144
8145 genlmsg_end(msg, hdr);
8146
8147 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8148 nl80211_mlme_mcgrp.id, gfp);
8149 return;
8150
8151 nla_put_failure:
8152 genlmsg_cancel(msg, hdr);
8153 nlmsg_free(msg);
8154 }
8155
8156 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8157 struct net_device *netdev, const u8 *addr,
8158 enum nl80211_key_type key_type, int key_id,
8159 const u8 *tsc, gfp_t gfp)
8160 {
8161 struct sk_buff *msg;
8162 void *hdr;
8163
8164 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8165 if (!msg)
8166 return;
8167
8168 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8169 if (!hdr) {
8170 nlmsg_free(msg);
8171 return;
8172 }
8173
8174 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8175 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8176 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8177 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8178 (key_id != -1 &&
8179 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8180 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8181 goto nla_put_failure;
8182
8183 genlmsg_end(msg, hdr);
8184
8185 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8186 nl80211_mlme_mcgrp.id, gfp);
8187 return;
8188
8189 nla_put_failure:
8190 genlmsg_cancel(msg, hdr);
8191 nlmsg_free(msg);
8192 }
8193
8194 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8195 struct ieee80211_channel *channel_before,
8196 struct ieee80211_channel *channel_after)
8197 {
8198 struct sk_buff *msg;
8199 void *hdr;
8200 struct nlattr *nl_freq;
8201
8202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8203 if (!msg)
8204 return;
8205
8206 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8207 if (!hdr) {
8208 nlmsg_free(msg);
8209 return;
8210 }
8211
8212 /*
8213 * Since we are applying the beacon hint to a wiphy we know its
8214 * wiphy_idx is valid
8215 */
8216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8217 goto nla_put_failure;
8218
8219 /* Before */
8220 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8221 if (!nl_freq)
8222 goto nla_put_failure;
8223 if (nl80211_msg_put_channel(msg, channel_before))
8224 goto nla_put_failure;
8225 nla_nest_end(msg, nl_freq);
8226
8227 /* After */
8228 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8229 if (!nl_freq)
8230 goto nla_put_failure;
8231 if (nl80211_msg_put_channel(msg, channel_after))
8232 goto nla_put_failure;
8233 nla_nest_end(msg, nl_freq);
8234
8235 genlmsg_end(msg, hdr);
8236
8237 rcu_read_lock();
8238 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8239 GFP_ATOMIC);
8240 rcu_read_unlock();
8241
8242 return;
8243
8244 nla_put_failure:
8245 genlmsg_cancel(msg, hdr);
8246 nlmsg_free(msg);
8247 }
8248
8249 static void nl80211_send_remain_on_chan_event(
8250 int cmd, struct cfg80211_registered_device *rdev,
8251 struct wireless_dev *wdev, u64 cookie,
8252 struct ieee80211_channel *chan,
8253 enum nl80211_channel_type channel_type,
8254 unsigned int duration, gfp_t gfp)
8255 {
8256 struct sk_buff *msg;
8257 void *hdr;
8258
8259 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8260 if (!msg)
8261 return;
8262
8263 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8264 if (!hdr) {
8265 nlmsg_free(msg);
8266 return;
8267 }
8268
8269 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8270 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8271 wdev->netdev->ifindex)) ||
8272 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8273 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8274 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
8275 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8276 goto nla_put_failure;
8277
8278 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8279 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8280 goto nla_put_failure;
8281
8282 genlmsg_end(msg, hdr);
8283
8284 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8285 nl80211_mlme_mcgrp.id, gfp);
8286 return;
8287
8288 nla_put_failure:
8289 genlmsg_cancel(msg, hdr);
8290 nlmsg_free(msg);
8291 }
8292
8293 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8294 struct wireless_dev *wdev, u64 cookie,
8295 struct ieee80211_channel *chan,
8296 enum nl80211_channel_type channel_type,
8297 unsigned int duration, gfp_t gfp)
8298 {
8299 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8300 rdev, wdev, cookie, chan,
8301 channel_type, duration, gfp);
8302 }
8303
8304 void nl80211_send_remain_on_channel_cancel(
8305 struct cfg80211_registered_device *rdev,
8306 struct wireless_dev *wdev,
8307 u64 cookie, struct ieee80211_channel *chan,
8308 enum nl80211_channel_type channel_type, gfp_t gfp)
8309 {
8310 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8311 rdev, wdev, cookie, chan,
8312 channel_type, 0, gfp);
8313 }
8314
8315 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8316 struct net_device *dev, const u8 *mac_addr,
8317 struct station_info *sinfo, gfp_t gfp)
8318 {
8319 struct sk_buff *msg;
8320
8321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8322 if (!msg)
8323 return;
8324
8325 if (nl80211_send_station(msg, 0, 0, 0,
8326 rdev, dev, mac_addr, sinfo) < 0) {
8327 nlmsg_free(msg);
8328 return;
8329 }
8330
8331 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8332 nl80211_mlme_mcgrp.id, gfp);
8333 }
8334
8335 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8336 struct net_device *dev, const u8 *mac_addr,
8337 gfp_t gfp)
8338 {
8339 struct sk_buff *msg;
8340 void *hdr;
8341
8342 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8343 if (!msg)
8344 return;
8345
8346 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8347 if (!hdr) {
8348 nlmsg_free(msg);
8349 return;
8350 }
8351
8352 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8353 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8354 goto nla_put_failure;
8355
8356 genlmsg_end(msg, hdr);
8357
8358 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8359 nl80211_mlme_mcgrp.id, gfp);
8360 return;
8361
8362 nla_put_failure:
8363 genlmsg_cancel(msg, hdr);
8364 nlmsg_free(msg);
8365 }
8366
8367 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8368 const u8 *addr, gfp_t gfp)
8369 {
8370 struct wireless_dev *wdev = dev->ieee80211_ptr;
8371 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8372 struct sk_buff *msg;
8373 void *hdr;
8374 int err;
8375 u32 nlpid = ACCESS_ONCE(wdev->ap_unexpected_nlpid);
8376
8377 if (!nlpid)
8378 return false;
8379
8380 msg = nlmsg_new(100, gfp);
8381 if (!msg)
8382 return true;
8383
8384 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8385 if (!hdr) {
8386 nlmsg_free(msg);
8387 return true;
8388 }
8389
8390 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8391 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8392 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8393 goto nla_put_failure;
8394
8395 err = genlmsg_end(msg, hdr);
8396 if (err < 0) {
8397 nlmsg_free(msg);
8398 return true;
8399 }
8400
8401 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8402 return true;
8403
8404 nla_put_failure:
8405 genlmsg_cancel(msg, hdr);
8406 nlmsg_free(msg);
8407 return true;
8408 }
8409
8410 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8411 {
8412 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8413 addr, gfp);
8414 }
8415
8416 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8417 const u8 *addr, gfp_t gfp)
8418 {
8419 return __nl80211_unexpected_frame(dev,
8420 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8421 addr, gfp);
8422 }
8423
8424 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8425 struct wireless_dev *wdev, u32 nlpid,
8426 int freq, int sig_dbm,
8427 const u8 *buf, size_t len, gfp_t gfp)
8428 {
8429 struct net_device *netdev = wdev->netdev;
8430 struct sk_buff *msg;
8431 void *hdr;
8432
8433 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8434 if (!msg)
8435 return -ENOMEM;
8436
8437 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8438 if (!hdr) {
8439 nlmsg_free(msg);
8440 return -ENOMEM;
8441 }
8442
8443 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8444 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8445 netdev->ifindex)) ||
8446 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8447 (sig_dbm &&
8448 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8449 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8450 goto nla_put_failure;
8451
8452 genlmsg_end(msg, hdr);
8453
8454 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8455
8456 nla_put_failure:
8457 genlmsg_cancel(msg, hdr);
8458 nlmsg_free(msg);
8459 return -ENOBUFS;
8460 }
8461
8462 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8463 struct wireless_dev *wdev, u64 cookie,
8464 const u8 *buf, size_t len, bool ack,
8465 gfp_t gfp)
8466 {
8467 struct net_device *netdev = wdev->netdev;
8468 struct sk_buff *msg;
8469 void *hdr;
8470
8471 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8472 if (!msg)
8473 return;
8474
8475 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8476 if (!hdr) {
8477 nlmsg_free(msg);
8478 return;
8479 }
8480
8481 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8482 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8483 netdev->ifindex)) ||
8484 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8485 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8486 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8487 goto nla_put_failure;
8488
8489 genlmsg_end(msg, hdr);
8490
8491 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8492 return;
8493
8494 nla_put_failure:
8495 genlmsg_cancel(msg, hdr);
8496 nlmsg_free(msg);
8497 }
8498
8499 void
8500 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8501 struct net_device *netdev,
8502 enum nl80211_cqm_rssi_threshold_event rssi_event,
8503 gfp_t gfp)
8504 {
8505 struct sk_buff *msg;
8506 struct nlattr *pinfoattr;
8507 void *hdr;
8508
8509 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8510 if (!msg)
8511 return;
8512
8513 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8514 if (!hdr) {
8515 nlmsg_free(msg);
8516 return;
8517 }
8518
8519 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8520 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8521 goto nla_put_failure;
8522
8523 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8524 if (!pinfoattr)
8525 goto nla_put_failure;
8526
8527 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8528 rssi_event))
8529 goto nla_put_failure;
8530
8531 nla_nest_end(msg, pinfoattr);
8532
8533 genlmsg_end(msg, hdr);
8534
8535 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8536 nl80211_mlme_mcgrp.id, gfp);
8537 return;
8538
8539 nla_put_failure:
8540 genlmsg_cancel(msg, hdr);
8541 nlmsg_free(msg);
8542 }
8543
8544 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8545 struct net_device *netdev, const u8 *bssid,
8546 const u8 *replay_ctr, gfp_t gfp)
8547 {
8548 struct sk_buff *msg;
8549 struct nlattr *rekey_attr;
8550 void *hdr;
8551
8552 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8553 if (!msg)
8554 return;
8555
8556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8557 if (!hdr) {
8558 nlmsg_free(msg);
8559 return;
8560 }
8561
8562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8563 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8565 goto nla_put_failure;
8566
8567 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8568 if (!rekey_attr)
8569 goto nla_put_failure;
8570
8571 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8572 NL80211_REPLAY_CTR_LEN, replay_ctr))
8573 goto nla_put_failure;
8574
8575 nla_nest_end(msg, rekey_attr);
8576
8577 genlmsg_end(msg, hdr);
8578
8579 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8580 nl80211_mlme_mcgrp.id, gfp);
8581 return;
8582
8583 nla_put_failure:
8584 genlmsg_cancel(msg, hdr);
8585 nlmsg_free(msg);
8586 }
8587
8588 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8589 struct net_device *netdev, int index,
8590 const u8 *bssid, bool preauth, gfp_t gfp)
8591 {
8592 struct sk_buff *msg;
8593 struct nlattr *attr;
8594 void *hdr;
8595
8596 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8597 if (!msg)
8598 return;
8599
8600 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8601 if (!hdr) {
8602 nlmsg_free(msg);
8603 return;
8604 }
8605
8606 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8607 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8608 goto nla_put_failure;
8609
8610 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8611 if (!attr)
8612 goto nla_put_failure;
8613
8614 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8615 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8616 (preauth &&
8617 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8618 goto nla_put_failure;
8619
8620 nla_nest_end(msg, attr);
8621
8622 genlmsg_end(msg, hdr);
8623
8624 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8625 nl80211_mlme_mcgrp.id, gfp);
8626 return;
8627
8628 nla_put_failure:
8629 genlmsg_cancel(msg, hdr);
8630 nlmsg_free(msg);
8631 }
8632
8633 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8634 struct net_device *netdev, int freq,
8635 enum nl80211_channel_type type, gfp_t gfp)
8636 {
8637 struct sk_buff *msg;
8638 void *hdr;
8639
8640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8641 if (!msg)
8642 return;
8643
8644 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8645 if (!hdr) {
8646 nlmsg_free(msg);
8647 return;
8648 }
8649
8650 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8651 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8652 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8653 goto nla_put_failure;
8654
8655 genlmsg_end(msg, hdr);
8656
8657 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8658 nl80211_mlme_mcgrp.id, gfp);
8659 return;
8660
8661 nla_put_failure:
8662 genlmsg_cancel(msg, hdr);
8663 nlmsg_free(msg);
8664 }
8665
8666 void
8667 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8668 struct net_device *netdev, const u8 *peer,
8669 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8670 {
8671 struct sk_buff *msg;
8672 struct nlattr *pinfoattr;
8673 void *hdr;
8674
8675 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8676 if (!msg)
8677 return;
8678
8679 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8680 if (!hdr) {
8681 nlmsg_free(msg);
8682 return;
8683 }
8684
8685 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8686 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8688 goto nla_put_failure;
8689
8690 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8691 if (!pinfoattr)
8692 goto nla_put_failure;
8693
8694 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8695 goto nla_put_failure;
8696
8697 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8698 goto nla_put_failure;
8699
8700 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8701 goto nla_put_failure;
8702
8703 nla_nest_end(msg, pinfoattr);
8704
8705 genlmsg_end(msg, hdr);
8706
8707 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8708 nl80211_mlme_mcgrp.id, gfp);
8709 return;
8710
8711 nla_put_failure:
8712 genlmsg_cancel(msg, hdr);
8713 nlmsg_free(msg);
8714 }
8715
8716 void
8717 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8718 struct net_device *netdev, const u8 *peer,
8719 u32 num_packets, gfp_t gfp)
8720 {
8721 struct sk_buff *msg;
8722 struct nlattr *pinfoattr;
8723 void *hdr;
8724
8725 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8726 if (!msg)
8727 return;
8728
8729 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8730 if (!hdr) {
8731 nlmsg_free(msg);
8732 return;
8733 }
8734
8735 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8736 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8737 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8738 goto nla_put_failure;
8739
8740 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8741 if (!pinfoattr)
8742 goto nla_put_failure;
8743
8744 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8745 goto nla_put_failure;
8746
8747 nla_nest_end(msg, pinfoattr);
8748
8749 genlmsg_end(msg, hdr);
8750
8751 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8752 nl80211_mlme_mcgrp.id, gfp);
8753 return;
8754
8755 nla_put_failure:
8756 genlmsg_cancel(msg, hdr);
8757 nlmsg_free(msg);
8758 }
8759
8760 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8761 u64 cookie, bool acked, gfp_t gfp)
8762 {
8763 struct wireless_dev *wdev = dev->ieee80211_ptr;
8764 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8765 struct sk_buff *msg;
8766 void *hdr;
8767 int err;
8768
8769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8770 if (!msg)
8771 return;
8772
8773 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8774 if (!hdr) {
8775 nlmsg_free(msg);
8776 return;
8777 }
8778
8779 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8780 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8781 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8782 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8783 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8784 goto nla_put_failure;
8785
8786 err = genlmsg_end(msg, hdr);
8787 if (err < 0) {
8788 nlmsg_free(msg);
8789 return;
8790 }
8791
8792 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8793 nl80211_mlme_mcgrp.id, gfp);
8794 return;
8795
8796 nla_put_failure:
8797 genlmsg_cancel(msg, hdr);
8798 nlmsg_free(msg);
8799 }
8800 EXPORT_SYMBOL(cfg80211_probe_status);
8801
8802 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8803 const u8 *frame, size_t len,
8804 int freq, int sig_dbm, gfp_t gfp)
8805 {
8806 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8807 struct sk_buff *msg;
8808 void *hdr;
8809 u32 nlpid = ACCESS_ONCE(rdev->ap_beacons_nlpid);
8810
8811 if (!nlpid)
8812 return;
8813
8814 msg = nlmsg_new(len + 100, gfp);
8815 if (!msg)
8816 return;
8817
8818 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8819 if (!hdr) {
8820 nlmsg_free(msg);
8821 return;
8822 }
8823
8824 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8825 (freq &&
8826 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8827 (sig_dbm &&
8828 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8829 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8830 goto nla_put_failure;
8831
8832 genlmsg_end(msg, hdr);
8833
8834 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlpid);
8835 return;
8836
8837 nla_put_failure:
8838 genlmsg_cancel(msg, hdr);
8839 nlmsg_free(msg);
8840 }
8841 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8842
8843 static int nl80211_netlink_notify(struct notifier_block * nb,
8844 unsigned long state,
8845 void *_notify)
8846 {
8847 struct netlink_notify *notify = _notify;
8848 struct cfg80211_registered_device *rdev;
8849 struct wireless_dev *wdev;
8850
8851 if (state != NETLINK_URELEASE)
8852 return NOTIFY_DONE;
8853
8854 rcu_read_lock();
8855
8856 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8857 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
8858 cfg80211_mlme_unregister_socket(wdev, notify->pid);
8859 if (rdev->ap_beacons_nlpid == notify->pid)
8860 rdev->ap_beacons_nlpid = 0;
8861 }
8862
8863 rcu_read_unlock();
8864
8865 return NOTIFY_DONE;
8866 }
8867
8868 static struct notifier_block nl80211_netlink_notifier = {
8869 .notifier_call = nl80211_netlink_notify,
8870 };
8871
8872 /* initialisation/exit functions */
8873
8874 int nl80211_init(void)
8875 {
8876 int err;
8877
8878 err = genl_register_family_with_ops(&nl80211_fam,
8879 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8880 if (err)
8881 return err;
8882
8883 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8884 if (err)
8885 goto err_out;
8886
8887 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8888 if (err)
8889 goto err_out;
8890
8891 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8892 if (err)
8893 goto err_out;
8894
8895 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8896 if (err)
8897 goto err_out;
8898
8899 #ifdef CONFIG_NL80211_TESTMODE
8900 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
8901 if (err)
8902 goto err_out;
8903 #endif
8904
8905 err = netlink_register_notifier(&nl80211_netlink_notifier);
8906 if (err)
8907 goto err_out;
8908
8909 return 0;
8910 err_out:
8911 genl_unregister_family(&nl80211_fam);
8912 return err;
8913 }
8914
8915 void nl80211_exit(void)
8916 {
8917 netlink_unregister_notifier(&nl80211_netlink_notifier);
8918 genl_unregister_family(&nl80211_fam);
8919 }
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