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nl80211: move "can set channel" check
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include "core.h"
23 #include "nl80211.h"
24 #include "reg.h"
25 #include "rdev-ops.h"
26
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 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
359 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
360 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
361 };
362
363 /* policy for the key attributes */
364 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
365 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
366 [NL80211_KEY_IDX] = { .type = NLA_U8 },
367 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
368 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
369 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
370 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
371 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
372 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
373 };
374
375 /* policy for the key default flags */
376 static const struct nla_policy
377 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
378 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
379 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
380 };
381
382 /* policy for WoWLAN attributes */
383 static const struct nla_policy
384 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
385 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
386 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
387 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
388 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
389 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
390 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
391 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
392 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
393 };
394
395 /* policy for GTK rekey offload attributes */
396 static const struct nla_policy
397 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
398 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
399 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
400 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
401 };
402
403 static const struct nla_policy
404 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
405 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
406 .len = IEEE80211_MAX_SSID_LEN },
407 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
408 };
409
410 /* ifidx get helper */
411 static int nl80211_get_ifidx(struct netlink_callback *cb)
412 {
413 int res;
414
415 res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
416 nl80211_fam.attrbuf, nl80211_fam.maxattr,
417 nl80211_policy);
418 if (res)
419 return res;
420
421 if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
422 return -EINVAL;
423
424 res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
425 if (!res)
426 return -EINVAL;
427 return res;
428 }
429
430 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
431 struct netlink_callback *cb,
432 struct cfg80211_registered_device **rdev,
433 struct net_device **dev)
434 {
435 int ifidx = cb->args[0];
436 int err;
437
438 if (!ifidx)
439 ifidx = nl80211_get_ifidx(cb);
440 if (ifidx < 0)
441 return ifidx;
442
443 cb->args[0] = ifidx;
444
445 rtnl_lock();
446
447 *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
448 if (!*dev) {
449 err = -ENODEV;
450 goto out_rtnl;
451 }
452
453 *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
454 if (IS_ERR(*rdev)) {
455 err = PTR_ERR(*rdev);
456 goto out_rtnl;
457 }
458
459 return 0;
460 out_rtnl:
461 rtnl_unlock();
462 return err;
463 }
464
465 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
466 {
467 cfg80211_unlock_rdev(rdev);
468 rtnl_unlock();
469 }
470
471 /* IE validation */
472 static bool is_valid_ie_attr(const struct nlattr *attr)
473 {
474 const u8 *pos;
475 int len;
476
477 if (!attr)
478 return true;
479
480 pos = nla_data(attr);
481 len = nla_len(attr);
482
483 while (len) {
484 u8 elemlen;
485
486 if (len < 2)
487 return false;
488 len -= 2;
489
490 elemlen = pos[1];
491 if (elemlen > len)
492 return false;
493
494 len -= elemlen;
495 pos += 2 + elemlen;
496 }
497
498 return true;
499 }
500
501 /* message building helper */
502 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
503 int flags, u8 cmd)
504 {
505 /* since there is no private header just add the generic one */
506 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
507 }
508
509 static int nl80211_msg_put_channel(struct sk_buff *msg,
510 struct ieee80211_channel *chan)
511 {
512 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
513 chan->center_freq))
514 goto nla_put_failure;
515
516 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
517 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
518 goto nla_put_failure;
519 if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
520 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
521 goto nla_put_failure;
522 if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
523 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
524 goto nla_put_failure;
525 if ((chan->flags & IEEE80211_CHAN_RADAR) &&
526 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
527 goto nla_put_failure;
528
529 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
530 DBM_TO_MBM(chan->max_power)))
531 goto nla_put_failure;
532
533 return 0;
534
535 nla_put_failure:
536 return -ENOBUFS;
537 }
538
539 /* netlink command implementations */
540
541 struct key_parse {
542 struct key_params p;
543 int idx;
544 int type;
545 bool def, defmgmt;
546 bool def_uni, def_multi;
547 };
548
549 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
550 {
551 struct nlattr *tb[NL80211_KEY_MAX + 1];
552 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
553 nl80211_key_policy);
554 if (err)
555 return err;
556
557 k->def = !!tb[NL80211_KEY_DEFAULT];
558 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
559
560 if (k->def) {
561 k->def_uni = true;
562 k->def_multi = true;
563 }
564 if (k->defmgmt)
565 k->def_multi = true;
566
567 if (tb[NL80211_KEY_IDX])
568 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
569
570 if (tb[NL80211_KEY_DATA]) {
571 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
572 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
573 }
574
575 if (tb[NL80211_KEY_SEQ]) {
576 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
577 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
578 }
579
580 if (tb[NL80211_KEY_CIPHER])
581 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
582
583 if (tb[NL80211_KEY_TYPE]) {
584 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
585 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
586 return -EINVAL;
587 }
588
589 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
590 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
591 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
592 tb[NL80211_KEY_DEFAULT_TYPES],
593 nl80211_key_default_policy);
594 if (err)
595 return err;
596
597 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
598 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
599 }
600
601 return 0;
602 }
603
604 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
605 {
606 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
607 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
608 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
609 }
610
611 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
612 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
613 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
614 }
615
616 if (info->attrs[NL80211_ATTR_KEY_IDX])
617 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
618
619 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
620 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
621
622 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
623 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
624
625 if (k->def) {
626 k->def_uni = true;
627 k->def_multi = true;
628 }
629 if (k->defmgmt)
630 k->def_multi = true;
631
632 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
633 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
634 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
635 return -EINVAL;
636 }
637
638 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
639 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
640 int err = nla_parse_nested(
641 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
642 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
643 nl80211_key_default_policy);
644 if (err)
645 return err;
646
647 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
648 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
649 }
650
651 return 0;
652 }
653
654 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
655 {
656 int err;
657
658 memset(k, 0, sizeof(*k));
659 k->idx = -1;
660 k->type = -1;
661
662 if (info->attrs[NL80211_ATTR_KEY])
663 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
664 else
665 err = nl80211_parse_key_old(info, k);
666
667 if (err)
668 return err;
669
670 if (k->def && k->defmgmt)
671 return -EINVAL;
672
673 if (k->defmgmt) {
674 if (k->def_uni || !k->def_multi)
675 return -EINVAL;
676 }
677
678 if (k->idx != -1) {
679 if (k->defmgmt) {
680 if (k->idx < 4 || k->idx > 5)
681 return -EINVAL;
682 } else if (k->def) {
683 if (k->idx < 0 || k->idx > 3)
684 return -EINVAL;
685 } else {
686 if (k->idx < 0 || k->idx > 5)
687 return -EINVAL;
688 }
689 }
690
691 return 0;
692 }
693
694 static struct cfg80211_cached_keys *
695 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
696 struct nlattr *keys, bool *no_ht)
697 {
698 struct key_parse parse;
699 struct nlattr *key;
700 struct cfg80211_cached_keys *result;
701 int rem, err, def = 0;
702
703 result = kzalloc(sizeof(*result), GFP_KERNEL);
704 if (!result)
705 return ERR_PTR(-ENOMEM);
706
707 result->def = -1;
708 result->defmgmt = -1;
709
710 nla_for_each_nested(key, keys, rem) {
711 memset(&parse, 0, sizeof(parse));
712 parse.idx = -1;
713
714 err = nl80211_parse_key_new(key, &parse);
715 if (err)
716 goto error;
717 err = -EINVAL;
718 if (!parse.p.key)
719 goto error;
720 if (parse.idx < 0 || parse.idx > 4)
721 goto error;
722 if (parse.def) {
723 if (def)
724 goto error;
725 def = 1;
726 result->def = parse.idx;
727 if (!parse.def_uni || !parse.def_multi)
728 goto error;
729 } else if (parse.defmgmt)
730 goto error;
731 err = cfg80211_validate_key_settings(rdev, &parse.p,
732 parse.idx, false, NULL);
733 if (err)
734 goto error;
735 result->params[parse.idx].cipher = parse.p.cipher;
736 result->params[parse.idx].key_len = parse.p.key_len;
737 result->params[parse.idx].key = result->data[parse.idx];
738 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
739
740 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
741 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
742 if (no_ht)
743 *no_ht = true;
744 }
745 }
746
747 return result;
748 error:
749 kfree(result);
750 return ERR_PTR(err);
751 }
752
753 static int nl80211_key_allowed(struct wireless_dev *wdev)
754 {
755 ASSERT_WDEV_LOCK(wdev);
756
757 switch (wdev->iftype) {
758 case NL80211_IFTYPE_AP:
759 case NL80211_IFTYPE_AP_VLAN:
760 case NL80211_IFTYPE_P2P_GO:
761 case NL80211_IFTYPE_MESH_POINT:
762 break;
763 case NL80211_IFTYPE_ADHOC:
764 if (!wdev->current_bss)
765 return -ENOLINK;
766 break;
767 case NL80211_IFTYPE_STATION:
768 case NL80211_IFTYPE_P2P_CLIENT:
769 if (wdev->sme_state != CFG80211_SME_CONNECTED)
770 return -ENOLINK;
771 break;
772 default:
773 return -EINVAL;
774 }
775
776 return 0;
777 }
778
779 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
780 {
781 struct nlattr *nl_modes = nla_nest_start(msg, attr);
782 int i;
783
784 if (!nl_modes)
785 goto nla_put_failure;
786
787 i = 0;
788 while (ifmodes) {
789 if ((ifmodes & 1) && nla_put_flag(msg, i))
790 goto nla_put_failure;
791 ifmodes >>= 1;
792 i++;
793 }
794
795 nla_nest_end(msg, nl_modes);
796 return 0;
797
798 nla_put_failure:
799 return -ENOBUFS;
800 }
801
802 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
803 struct sk_buff *msg)
804 {
805 struct nlattr *nl_combis;
806 int i, j;
807
808 nl_combis = nla_nest_start(msg,
809 NL80211_ATTR_INTERFACE_COMBINATIONS);
810 if (!nl_combis)
811 goto nla_put_failure;
812
813 for (i = 0; i < wiphy->n_iface_combinations; i++) {
814 const struct ieee80211_iface_combination *c;
815 struct nlattr *nl_combi, *nl_limits;
816
817 c = &wiphy->iface_combinations[i];
818
819 nl_combi = nla_nest_start(msg, i + 1);
820 if (!nl_combi)
821 goto nla_put_failure;
822
823 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
824 if (!nl_limits)
825 goto nla_put_failure;
826
827 for (j = 0; j < c->n_limits; j++) {
828 struct nlattr *nl_limit;
829
830 nl_limit = nla_nest_start(msg, j + 1);
831 if (!nl_limit)
832 goto nla_put_failure;
833 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
834 c->limits[j].max))
835 goto nla_put_failure;
836 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
837 c->limits[j].types))
838 goto nla_put_failure;
839 nla_nest_end(msg, nl_limit);
840 }
841
842 nla_nest_end(msg, nl_limits);
843
844 if (c->beacon_int_infra_match &&
845 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
846 goto nla_put_failure;
847 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
848 c->num_different_channels) ||
849 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
850 c->max_interfaces))
851 goto nla_put_failure;
852
853 nla_nest_end(msg, nl_combi);
854 }
855
856 nla_nest_end(msg, nl_combis);
857
858 return 0;
859 nla_put_failure:
860 return -ENOBUFS;
861 }
862
863 static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
864 struct cfg80211_registered_device *dev)
865 {
866 void *hdr;
867 struct nlattr *nl_bands, *nl_band;
868 struct nlattr *nl_freqs, *nl_freq;
869 struct nlattr *nl_rates, *nl_rate;
870 struct nlattr *nl_cmds;
871 enum ieee80211_band band;
872 struct ieee80211_channel *chan;
873 struct ieee80211_rate *rate;
874 int i;
875 const struct ieee80211_txrx_stypes *mgmt_stypes =
876 dev->wiphy.mgmt_stypes;
877
878 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
879 if (!hdr)
880 return -1;
881
882 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
883 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
884 nla_put_u32(msg, NL80211_ATTR_GENERATION,
885 cfg80211_rdev_list_generation) ||
886 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
887 dev->wiphy.retry_short) ||
888 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
889 dev->wiphy.retry_long) ||
890 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
891 dev->wiphy.frag_threshold) ||
892 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
893 dev->wiphy.rts_threshold) ||
894 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
895 dev->wiphy.coverage_class) ||
896 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
897 dev->wiphy.max_scan_ssids) ||
898 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
899 dev->wiphy.max_sched_scan_ssids) ||
900 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
901 dev->wiphy.max_scan_ie_len) ||
902 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
903 dev->wiphy.max_sched_scan_ie_len) ||
904 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
905 dev->wiphy.max_match_sets))
906 goto nla_put_failure;
907
908 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
909 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
910 goto nla_put_failure;
911 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
912 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
913 goto nla_put_failure;
914 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
915 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
916 goto nla_put_failure;
917 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
918 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
919 goto nla_put_failure;
920 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
921 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
922 goto nla_put_failure;
923 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
924 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
925 goto nla_put_failure;
926
927 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
928 sizeof(u32) * dev->wiphy.n_cipher_suites,
929 dev->wiphy.cipher_suites))
930 goto nla_put_failure;
931
932 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
933 dev->wiphy.max_num_pmkids))
934 goto nla_put_failure;
935
936 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
937 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
938 goto nla_put_failure;
939
940 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
941 dev->wiphy.available_antennas_tx) ||
942 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
943 dev->wiphy.available_antennas_rx))
944 goto nla_put_failure;
945
946 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
947 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
948 dev->wiphy.probe_resp_offload))
949 goto nla_put_failure;
950
951 if ((dev->wiphy.available_antennas_tx ||
952 dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
953 u32 tx_ant = 0, rx_ant = 0;
954 int res;
955 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
956 if (!res) {
957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
958 tx_ant) ||
959 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
960 rx_ant))
961 goto nla_put_failure;
962 }
963 }
964
965 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
966 dev->wiphy.interface_modes))
967 goto nla_put_failure;
968
969 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
970 if (!nl_bands)
971 goto nla_put_failure;
972
973 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
974 if (!dev->wiphy.bands[band])
975 continue;
976
977 nl_band = nla_nest_start(msg, band);
978 if (!nl_band)
979 goto nla_put_failure;
980
981 /* add HT info */
982 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
983 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
984 sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
985 &dev->wiphy.bands[band]->ht_cap.mcs) ||
986 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
987 dev->wiphy.bands[band]->ht_cap.cap) ||
988 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
989 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
990 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
991 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
992 goto nla_put_failure;
993
994 /* add VHT info */
995 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
996 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
997 sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
998 &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
999 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1000 dev->wiphy.bands[band]->vht_cap.cap)))
1001 goto nla_put_failure;
1002
1003 /* add frequencies */
1004 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
1005 if (!nl_freqs)
1006 goto nla_put_failure;
1007
1008 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1009 nl_freq = nla_nest_start(msg, i);
1010 if (!nl_freq)
1011 goto nla_put_failure;
1012
1013 chan = &dev->wiphy.bands[band]->channels[i];
1014
1015 if (nl80211_msg_put_channel(msg, chan))
1016 goto nla_put_failure;
1017
1018 nla_nest_end(msg, nl_freq);
1019 }
1020
1021 nla_nest_end(msg, nl_freqs);
1022
1023 /* add bitrates */
1024 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1025 if (!nl_rates)
1026 goto nla_put_failure;
1027
1028 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1029 nl_rate = nla_nest_start(msg, i);
1030 if (!nl_rate)
1031 goto nla_put_failure;
1032
1033 rate = &dev->wiphy.bands[band]->bitrates[i];
1034 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1035 rate->bitrate))
1036 goto nla_put_failure;
1037 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1038 nla_put_flag(msg,
1039 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1040 goto nla_put_failure;
1041
1042 nla_nest_end(msg, nl_rate);
1043 }
1044
1045 nla_nest_end(msg, nl_rates);
1046
1047 nla_nest_end(msg, nl_band);
1048 }
1049 nla_nest_end(msg, nl_bands);
1050
1051 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1052 if (!nl_cmds)
1053 goto nla_put_failure;
1054
1055 i = 0;
1056 #define CMD(op, n) \
1057 do { \
1058 if (dev->ops->op) { \
1059 i++; \
1060 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1061 goto nla_put_failure; \
1062 } \
1063 } while (0)
1064
1065 CMD(add_virtual_intf, NEW_INTERFACE);
1066 CMD(change_virtual_intf, SET_INTERFACE);
1067 CMD(add_key, NEW_KEY);
1068 CMD(start_ap, START_AP);
1069 CMD(add_station, NEW_STATION);
1070 CMD(add_mpath, NEW_MPATH);
1071 CMD(update_mesh_config, SET_MESH_CONFIG);
1072 CMD(change_bss, SET_BSS);
1073 CMD(auth, AUTHENTICATE);
1074 CMD(assoc, ASSOCIATE);
1075 CMD(deauth, DEAUTHENTICATE);
1076 CMD(disassoc, DISASSOCIATE);
1077 CMD(join_ibss, JOIN_IBSS);
1078 CMD(join_mesh, JOIN_MESH);
1079 CMD(set_pmksa, SET_PMKSA);
1080 CMD(del_pmksa, DEL_PMKSA);
1081 CMD(flush_pmksa, FLUSH_PMKSA);
1082 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1083 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1084 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1085 CMD(mgmt_tx, FRAME);
1086 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1087 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1088 i++;
1089 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1090 goto nla_put_failure;
1091 }
1092 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1093 dev->ops->join_mesh) {
1094 i++;
1095 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1096 goto nla_put_failure;
1097 }
1098 CMD(set_wds_peer, SET_WDS_PEER);
1099 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1100 CMD(tdls_mgmt, TDLS_MGMT);
1101 CMD(tdls_oper, TDLS_OPER);
1102 }
1103 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1104 CMD(sched_scan_start, START_SCHED_SCAN);
1105 CMD(probe_client, PROBE_CLIENT);
1106 CMD(set_noack_map, SET_NOACK_MAP);
1107 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1108 i++;
1109 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1110 goto nla_put_failure;
1111 }
1112 CMD(start_p2p_device, START_P2P_DEVICE);
1113
1114 #ifdef CONFIG_NL80211_TESTMODE
1115 CMD(testmode_cmd, TESTMODE);
1116 #endif
1117
1118 #undef CMD
1119
1120 if (dev->ops->connect || dev->ops->auth) {
1121 i++;
1122 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1123 goto nla_put_failure;
1124 }
1125
1126 if (dev->ops->disconnect || dev->ops->deauth) {
1127 i++;
1128 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1129 goto nla_put_failure;
1130 }
1131
1132 nla_nest_end(msg, nl_cmds);
1133
1134 if (dev->ops->remain_on_channel &&
1135 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1136 nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1137 dev->wiphy.max_remain_on_channel_duration))
1138 goto nla_put_failure;
1139
1140 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1141 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1142 goto nla_put_failure;
1143
1144 if (mgmt_stypes) {
1145 u16 stypes;
1146 struct nlattr *nl_ftypes, *nl_ifs;
1147 enum nl80211_iftype ift;
1148
1149 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1150 if (!nl_ifs)
1151 goto nla_put_failure;
1152
1153 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1154 nl_ftypes = nla_nest_start(msg, ift);
1155 if (!nl_ftypes)
1156 goto nla_put_failure;
1157 i = 0;
1158 stypes = mgmt_stypes[ift].tx;
1159 while (stypes) {
1160 if ((stypes & 1) &&
1161 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1162 (i << 4) | IEEE80211_FTYPE_MGMT))
1163 goto nla_put_failure;
1164 stypes >>= 1;
1165 i++;
1166 }
1167 nla_nest_end(msg, nl_ftypes);
1168 }
1169
1170 nla_nest_end(msg, nl_ifs);
1171
1172 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1173 if (!nl_ifs)
1174 goto nla_put_failure;
1175
1176 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1177 nl_ftypes = nla_nest_start(msg, ift);
1178 if (!nl_ftypes)
1179 goto nla_put_failure;
1180 i = 0;
1181 stypes = mgmt_stypes[ift].rx;
1182 while (stypes) {
1183 if ((stypes & 1) &&
1184 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1185 (i << 4) | IEEE80211_FTYPE_MGMT))
1186 goto nla_put_failure;
1187 stypes >>= 1;
1188 i++;
1189 }
1190 nla_nest_end(msg, nl_ftypes);
1191 }
1192 nla_nest_end(msg, nl_ifs);
1193 }
1194
1195 #ifdef CONFIG_PM
1196 if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1197 struct nlattr *nl_wowlan;
1198
1199 nl_wowlan = nla_nest_start(msg,
1200 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1201 if (!nl_wowlan)
1202 goto nla_put_failure;
1203
1204 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1205 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1206 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1207 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1208 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1209 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1210 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1211 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1212 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1213 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1214 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1215 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1216 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1217 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1218 ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1219 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1220 goto nla_put_failure;
1221 if (dev->wiphy.wowlan.n_patterns) {
1222 struct nl80211_wowlan_pattern_support pat = {
1223 .max_patterns = dev->wiphy.wowlan.n_patterns,
1224 .min_pattern_len =
1225 dev->wiphy.wowlan.pattern_min_len,
1226 .max_pattern_len =
1227 dev->wiphy.wowlan.pattern_max_len,
1228 };
1229 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1230 sizeof(pat), &pat))
1231 goto nla_put_failure;
1232 }
1233
1234 nla_nest_end(msg, nl_wowlan);
1235 }
1236 #endif
1237
1238 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1239 dev->wiphy.software_iftypes))
1240 goto nla_put_failure;
1241
1242 if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1243 goto nla_put_failure;
1244
1245 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1246 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1247 dev->wiphy.ap_sme_capa))
1248 goto nla_put_failure;
1249
1250 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1251 dev->wiphy.features))
1252 goto nla_put_failure;
1253
1254 if (dev->wiphy.ht_capa_mod_mask &&
1255 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1256 sizeof(*dev->wiphy.ht_capa_mod_mask),
1257 dev->wiphy.ht_capa_mod_mask))
1258 goto nla_put_failure;
1259
1260 return genlmsg_end(msg, hdr);
1261
1262 nla_put_failure:
1263 genlmsg_cancel(msg, hdr);
1264 return -EMSGSIZE;
1265 }
1266
1267 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1268 {
1269 int idx = 0;
1270 int start = cb->args[0];
1271 struct cfg80211_registered_device *dev;
1272
1273 mutex_lock(&cfg80211_mutex);
1274 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1275 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1276 continue;
1277 if (++idx <= start)
1278 continue;
1279 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
1280 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1281 dev) < 0) {
1282 idx--;
1283 break;
1284 }
1285 }
1286 mutex_unlock(&cfg80211_mutex);
1287
1288 cb->args[0] = idx;
1289
1290 return skb->len;
1291 }
1292
1293 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1294 {
1295 struct sk_buff *msg;
1296 struct cfg80211_registered_device *dev = info->user_ptr[0];
1297
1298 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1299 if (!msg)
1300 return -ENOMEM;
1301
1302 if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 0) {
1303 nlmsg_free(msg);
1304 return -ENOBUFS;
1305 }
1306
1307 return genlmsg_reply(msg, info);
1308 }
1309
1310 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1311 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1312 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1313 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1314 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1315 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1316 };
1317
1318 static int parse_txq_params(struct nlattr *tb[],
1319 struct ieee80211_txq_params *txq_params)
1320 {
1321 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1322 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1323 !tb[NL80211_TXQ_ATTR_AIFS])
1324 return -EINVAL;
1325
1326 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1327 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1328 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1329 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1330 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1331
1332 if (txq_params->ac >= NL80211_NUM_ACS)
1333 return -EINVAL;
1334
1335 return 0;
1336 }
1337
1338 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1339 {
1340 /*
1341 * You can only set the channel explicitly for WDS interfaces,
1342 * all others have their channel managed via their respective
1343 * "establish a connection" command (connect, join, ...)
1344 *
1345 * For AP/GO and mesh mode, the channel can be set with the
1346 * channel userspace API, but is only stored and passed to the
1347 * low-level driver when the AP starts or the mesh is joined.
1348 * This is for backward compatibility, userspace can also give
1349 * the channel in the start-ap or join-mesh commands instead.
1350 *
1351 * Monitors are special as they are normally slaved to
1352 * whatever else is going on, so they have their own special
1353 * operation to set the monitor channel if possible.
1354 */
1355 return !wdev ||
1356 wdev->iftype == NL80211_IFTYPE_AP ||
1357 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1358 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1359 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1360 }
1361
1362 static bool nl80211_valid_channel_type(struct genl_info *info,
1363 enum nl80211_channel_type *channel_type)
1364 {
1365 enum nl80211_channel_type tmp;
1366
1367 if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1368 return false;
1369
1370 tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1371 if (tmp != NL80211_CHAN_NO_HT &&
1372 tmp != NL80211_CHAN_HT20 &&
1373 tmp != NL80211_CHAN_HT40PLUS &&
1374 tmp != NL80211_CHAN_HT40MINUS)
1375 return false;
1376
1377 if (channel_type)
1378 *channel_type = tmp;
1379
1380 return true;
1381 }
1382
1383 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1384 struct wireless_dev *wdev,
1385 struct genl_info *info)
1386 {
1387 struct ieee80211_channel *channel;
1388 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1389 u32 freq;
1390 int result;
1391 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1392
1393 if (wdev)
1394 iftype = wdev->iftype;
1395
1396 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1397 return -EINVAL;
1398
1399 if (!nl80211_can_set_dev_channel(wdev))
1400 return -EOPNOTSUPP;
1401
1402 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1403 !nl80211_valid_channel_type(info, &channel_type))
1404 return -EINVAL;
1405
1406 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1407
1408 mutex_lock(&rdev->devlist_mtx);
1409 switch (iftype) {
1410 case NL80211_IFTYPE_AP:
1411 case NL80211_IFTYPE_P2P_GO:
1412 if (wdev->beacon_interval) {
1413 result = -EBUSY;
1414 break;
1415 }
1416 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1417 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1418 channel,
1419 channel_type)) {
1420 result = -EINVAL;
1421 break;
1422 }
1423 wdev->preset_chan = channel;
1424 wdev->preset_chantype = channel_type;
1425 result = 0;
1426 break;
1427 case NL80211_IFTYPE_MESH_POINT:
1428 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1429 break;
1430 case NL80211_IFTYPE_MONITOR:
1431 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1432 break;
1433 default:
1434 result = -EINVAL;
1435 }
1436 mutex_unlock(&rdev->devlist_mtx);
1437
1438 return result;
1439 }
1440
1441 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1442 {
1443 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1444 struct net_device *netdev = info->user_ptr[1];
1445
1446 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1447 }
1448
1449 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1450 {
1451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1452 struct net_device *dev = info->user_ptr[1];
1453 struct wireless_dev *wdev = dev->ieee80211_ptr;
1454 const u8 *bssid;
1455
1456 if (!info->attrs[NL80211_ATTR_MAC])
1457 return -EINVAL;
1458
1459 if (netif_running(dev))
1460 return -EBUSY;
1461
1462 if (!rdev->ops->set_wds_peer)
1463 return -EOPNOTSUPP;
1464
1465 if (wdev->iftype != NL80211_IFTYPE_WDS)
1466 return -EOPNOTSUPP;
1467
1468 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1469 return rdev_set_wds_peer(rdev, dev, bssid);
1470 }
1471
1472
1473 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1474 {
1475 struct cfg80211_registered_device *rdev;
1476 struct net_device *netdev = NULL;
1477 struct wireless_dev *wdev;
1478 int result = 0, rem_txq_params = 0;
1479 struct nlattr *nl_txq_params;
1480 u32 changed;
1481 u8 retry_short = 0, retry_long = 0;
1482 u32 frag_threshold = 0, rts_threshold = 0;
1483 u8 coverage_class = 0;
1484
1485 /*
1486 * Try to find the wiphy and netdev. Normally this
1487 * function shouldn't need the netdev, but this is
1488 * done for backward compatibility -- previously
1489 * setting the channel was done per wiphy, but now
1490 * it is per netdev. Previous userland like hostapd
1491 * also passed a netdev to set_wiphy, so that it is
1492 * possible to let that go to the right netdev!
1493 */
1494 mutex_lock(&cfg80211_mutex);
1495
1496 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1497 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1498
1499 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1500 if (netdev && netdev->ieee80211_ptr) {
1501 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1502 mutex_lock(&rdev->mtx);
1503 } else
1504 netdev = NULL;
1505 }
1506
1507 if (!netdev) {
1508 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1509 info->attrs);
1510 if (IS_ERR(rdev)) {
1511 mutex_unlock(&cfg80211_mutex);
1512 return PTR_ERR(rdev);
1513 }
1514 wdev = NULL;
1515 netdev = NULL;
1516 result = 0;
1517
1518 mutex_lock(&rdev->mtx);
1519 } else
1520 wdev = netdev->ieee80211_ptr;
1521
1522 /*
1523 * end workaround code, by now the rdev is available
1524 * and locked, and wdev may or may not be NULL.
1525 */
1526
1527 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1528 result = cfg80211_dev_rename(
1529 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1530
1531 mutex_unlock(&cfg80211_mutex);
1532
1533 if (result)
1534 goto bad_res;
1535
1536 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1537 struct ieee80211_txq_params txq_params;
1538 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1539
1540 if (!rdev->ops->set_txq_params) {
1541 result = -EOPNOTSUPP;
1542 goto bad_res;
1543 }
1544
1545 if (!netdev) {
1546 result = -EINVAL;
1547 goto bad_res;
1548 }
1549
1550 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1551 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1552 result = -EINVAL;
1553 goto bad_res;
1554 }
1555
1556 if (!netif_running(netdev)) {
1557 result = -ENETDOWN;
1558 goto bad_res;
1559 }
1560
1561 nla_for_each_nested(nl_txq_params,
1562 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1563 rem_txq_params) {
1564 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1565 nla_data(nl_txq_params),
1566 nla_len(nl_txq_params),
1567 txq_params_policy);
1568 result = parse_txq_params(tb, &txq_params);
1569 if (result)
1570 goto bad_res;
1571
1572 result = rdev_set_txq_params(rdev, netdev,
1573 &txq_params);
1574 if (result)
1575 goto bad_res;
1576 }
1577 }
1578
1579 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1580 result = __nl80211_set_channel(rdev,
1581 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1582 info);
1583 if (result)
1584 goto bad_res;
1585 }
1586
1587 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1588 enum nl80211_tx_power_setting type;
1589 int idx, mbm = 0;
1590
1591 if (!rdev->ops->set_tx_power) {
1592 result = -EOPNOTSUPP;
1593 goto bad_res;
1594 }
1595
1596 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1597 type = nla_get_u32(info->attrs[idx]);
1598
1599 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1600 (type != NL80211_TX_POWER_AUTOMATIC)) {
1601 result = -EINVAL;
1602 goto bad_res;
1603 }
1604
1605 if (type != NL80211_TX_POWER_AUTOMATIC) {
1606 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1607 mbm = nla_get_u32(info->attrs[idx]);
1608 }
1609
1610 result = rdev_set_tx_power(rdev, type, mbm);
1611 if (result)
1612 goto bad_res;
1613 }
1614
1615 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1616 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1617 u32 tx_ant, rx_ant;
1618 if ((!rdev->wiphy.available_antennas_tx &&
1619 !rdev->wiphy.available_antennas_rx) ||
1620 !rdev->ops->set_antenna) {
1621 result = -EOPNOTSUPP;
1622 goto bad_res;
1623 }
1624
1625 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1626 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1627
1628 /* reject antenna configurations which don't match the
1629 * available antenna masks, except for the "all" mask */
1630 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1631 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1632 result = -EINVAL;
1633 goto bad_res;
1634 }
1635
1636 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1637 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1638
1639 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
1640 if (result)
1641 goto bad_res;
1642 }
1643
1644 changed = 0;
1645
1646 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1647 retry_short = nla_get_u8(
1648 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1649 if (retry_short == 0) {
1650 result = -EINVAL;
1651 goto bad_res;
1652 }
1653 changed |= WIPHY_PARAM_RETRY_SHORT;
1654 }
1655
1656 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1657 retry_long = nla_get_u8(
1658 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1659 if (retry_long == 0) {
1660 result = -EINVAL;
1661 goto bad_res;
1662 }
1663 changed |= WIPHY_PARAM_RETRY_LONG;
1664 }
1665
1666 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1667 frag_threshold = nla_get_u32(
1668 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1669 if (frag_threshold < 256) {
1670 result = -EINVAL;
1671 goto bad_res;
1672 }
1673 if (frag_threshold != (u32) -1) {
1674 /*
1675 * Fragments (apart from the last one) are required to
1676 * have even length. Make the fragmentation code
1677 * simpler by stripping LSB should someone try to use
1678 * odd threshold value.
1679 */
1680 frag_threshold &= ~0x1;
1681 }
1682 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1683 }
1684
1685 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1686 rts_threshold = nla_get_u32(
1687 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1688 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1689 }
1690
1691 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1692 coverage_class = nla_get_u8(
1693 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1694 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1695 }
1696
1697 if (changed) {
1698 u8 old_retry_short, old_retry_long;
1699 u32 old_frag_threshold, old_rts_threshold;
1700 u8 old_coverage_class;
1701
1702 if (!rdev->ops->set_wiphy_params) {
1703 result = -EOPNOTSUPP;
1704 goto bad_res;
1705 }
1706
1707 old_retry_short = rdev->wiphy.retry_short;
1708 old_retry_long = rdev->wiphy.retry_long;
1709 old_frag_threshold = rdev->wiphy.frag_threshold;
1710 old_rts_threshold = rdev->wiphy.rts_threshold;
1711 old_coverage_class = rdev->wiphy.coverage_class;
1712
1713 if (changed & WIPHY_PARAM_RETRY_SHORT)
1714 rdev->wiphy.retry_short = retry_short;
1715 if (changed & WIPHY_PARAM_RETRY_LONG)
1716 rdev->wiphy.retry_long = retry_long;
1717 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1718 rdev->wiphy.frag_threshold = frag_threshold;
1719 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1720 rdev->wiphy.rts_threshold = rts_threshold;
1721 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1722 rdev->wiphy.coverage_class = coverage_class;
1723
1724 result = rdev_set_wiphy_params(rdev, changed);
1725 if (result) {
1726 rdev->wiphy.retry_short = old_retry_short;
1727 rdev->wiphy.retry_long = old_retry_long;
1728 rdev->wiphy.frag_threshold = old_frag_threshold;
1729 rdev->wiphy.rts_threshold = old_rts_threshold;
1730 rdev->wiphy.coverage_class = old_coverage_class;
1731 }
1732 }
1733
1734 bad_res:
1735 mutex_unlock(&rdev->mtx);
1736 if (netdev)
1737 dev_put(netdev);
1738 return result;
1739 }
1740
1741 static inline u64 wdev_id(struct wireless_dev *wdev)
1742 {
1743 return (u64)wdev->identifier |
1744 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1745 }
1746
1747 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
1748 struct cfg80211_registered_device *rdev,
1749 struct wireless_dev *wdev)
1750 {
1751 struct net_device *dev = wdev->netdev;
1752 void *hdr;
1753
1754 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1755 if (!hdr)
1756 return -1;
1757
1758 if (dev &&
1759 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1760 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1761 goto nla_put_failure;
1762
1763 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1764 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1765 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1766 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1767 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1768 rdev->devlist_generation ^
1769 (cfg80211_rdev_list_generation << 2)))
1770 goto nla_put_failure;
1771
1772 if (rdev->ops->get_channel) {
1773 struct ieee80211_channel *chan;
1774 enum nl80211_channel_type channel_type;
1775
1776 chan = rdev_get_channel(rdev, wdev, &channel_type);
1777 if (chan &&
1778 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1779 chan->center_freq) ||
1780 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1781 channel_type)))
1782 goto nla_put_failure;
1783 }
1784
1785 return genlmsg_end(msg, hdr);
1786
1787 nla_put_failure:
1788 genlmsg_cancel(msg, hdr);
1789 return -EMSGSIZE;
1790 }
1791
1792 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1793 {
1794 int wp_idx = 0;
1795 int if_idx = 0;
1796 int wp_start = cb->args[0];
1797 int if_start = cb->args[1];
1798 struct cfg80211_registered_device *rdev;
1799 struct wireless_dev *wdev;
1800
1801 mutex_lock(&cfg80211_mutex);
1802 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1803 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1804 continue;
1805 if (wp_idx < wp_start) {
1806 wp_idx++;
1807 continue;
1808 }
1809 if_idx = 0;
1810
1811 mutex_lock(&rdev->devlist_mtx);
1812 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1813 if (if_idx < if_start) {
1814 if_idx++;
1815 continue;
1816 }
1817 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
1818 cb->nlh->nlmsg_seq, NLM_F_MULTI,
1819 rdev, wdev) < 0) {
1820 mutex_unlock(&rdev->devlist_mtx);
1821 goto out;
1822 }
1823 if_idx++;
1824 }
1825 mutex_unlock(&rdev->devlist_mtx);
1826
1827 wp_idx++;
1828 }
1829 out:
1830 mutex_unlock(&cfg80211_mutex);
1831
1832 cb->args[0] = wp_idx;
1833 cb->args[1] = if_idx;
1834
1835 return skb->len;
1836 }
1837
1838 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1839 {
1840 struct sk_buff *msg;
1841 struct cfg80211_registered_device *dev = info->user_ptr[0];
1842 struct wireless_dev *wdev = info->user_ptr[1];
1843
1844 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1845 if (!msg)
1846 return -ENOMEM;
1847
1848 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
1849 dev, wdev) < 0) {
1850 nlmsg_free(msg);
1851 return -ENOBUFS;
1852 }
1853
1854 return genlmsg_reply(msg, info);
1855 }
1856
1857 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1858 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1859 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1860 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1861 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1862 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1863 };
1864
1865 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1866 {
1867 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1868 int flag;
1869
1870 *mntrflags = 0;
1871
1872 if (!nla)
1873 return -EINVAL;
1874
1875 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1876 nla, mntr_flags_policy))
1877 return -EINVAL;
1878
1879 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1880 if (flags[flag])
1881 *mntrflags |= (1<<flag);
1882
1883 return 0;
1884 }
1885
1886 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1887 struct net_device *netdev, u8 use_4addr,
1888 enum nl80211_iftype iftype)
1889 {
1890 if (!use_4addr) {
1891 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1892 return -EBUSY;
1893 return 0;
1894 }
1895
1896 switch (iftype) {
1897 case NL80211_IFTYPE_AP_VLAN:
1898 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1899 return 0;
1900 break;
1901 case NL80211_IFTYPE_STATION:
1902 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1903 return 0;
1904 break;
1905 default:
1906 break;
1907 }
1908
1909 return -EOPNOTSUPP;
1910 }
1911
1912 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1913 {
1914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1915 struct vif_params params;
1916 int err;
1917 enum nl80211_iftype otype, ntype;
1918 struct net_device *dev = info->user_ptr[1];
1919 u32 _flags, *flags = NULL;
1920 bool change = false;
1921
1922 memset(&params, 0, sizeof(params));
1923
1924 otype = ntype = dev->ieee80211_ptr->iftype;
1925
1926 if (info->attrs[NL80211_ATTR_IFTYPE]) {
1927 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1928 if (otype != ntype)
1929 change = true;
1930 if (ntype > NL80211_IFTYPE_MAX)
1931 return -EINVAL;
1932 }
1933
1934 if (info->attrs[NL80211_ATTR_MESH_ID]) {
1935 struct wireless_dev *wdev = dev->ieee80211_ptr;
1936
1937 if (ntype != NL80211_IFTYPE_MESH_POINT)
1938 return -EINVAL;
1939 if (netif_running(dev))
1940 return -EBUSY;
1941
1942 wdev_lock(wdev);
1943 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1944 IEEE80211_MAX_MESH_ID_LEN);
1945 wdev->mesh_id_up_len =
1946 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1947 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1948 wdev->mesh_id_up_len);
1949 wdev_unlock(wdev);
1950 }
1951
1952 if (info->attrs[NL80211_ATTR_4ADDR]) {
1953 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1954 change = true;
1955 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1956 if (err)
1957 return err;
1958 } else {
1959 params.use_4addr = -1;
1960 }
1961
1962 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1963 if (ntype != NL80211_IFTYPE_MONITOR)
1964 return -EINVAL;
1965 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1966 &_flags);
1967 if (err)
1968 return err;
1969
1970 flags = &_flags;
1971 change = true;
1972 }
1973
1974 if (change)
1975 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1976 else
1977 err = 0;
1978
1979 if (!err && params.use_4addr != -1)
1980 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1981
1982 return err;
1983 }
1984
1985 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1986 {
1987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1988 struct vif_params params;
1989 struct wireless_dev *wdev;
1990 struct sk_buff *msg;
1991 int err;
1992 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1993 u32 flags;
1994
1995 memset(&params, 0, sizeof(params));
1996
1997 if (!info->attrs[NL80211_ATTR_IFNAME])
1998 return -EINVAL;
1999
2000 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2001 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2002 if (type > NL80211_IFTYPE_MAX)
2003 return -EINVAL;
2004 }
2005
2006 if (!rdev->ops->add_virtual_intf ||
2007 !(rdev->wiphy.interface_modes & (1 << type)))
2008 return -EOPNOTSUPP;
2009
2010 if (info->attrs[NL80211_ATTR_4ADDR]) {
2011 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2012 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2013 if (err)
2014 return err;
2015 }
2016
2017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2018 if (!msg)
2019 return -ENOMEM;
2020
2021 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2022 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2023 &flags);
2024 wdev = rdev_add_virtual_intf(rdev,
2025 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2026 type, err ? NULL : &flags, &params);
2027 if (IS_ERR(wdev)) {
2028 nlmsg_free(msg);
2029 return PTR_ERR(wdev);
2030 }
2031
2032 switch (type) {
2033 case NL80211_IFTYPE_MESH_POINT:
2034 if (!info->attrs[NL80211_ATTR_MESH_ID])
2035 break;
2036 wdev_lock(wdev);
2037 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2038 IEEE80211_MAX_MESH_ID_LEN);
2039 wdev->mesh_id_up_len =
2040 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2041 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2042 wdev->mesh_id_up_len);
2043 wdev_unlock(wdev);
2044 break;
2045 case NL80211_IFTYPE_P2P_DEVICE:
2046 /*
2047 * P2P Device doesn't have a netdev, so doesn't go
2048 * through the netdev notifier and must be added here
2049 */
2050 mutex_init(&wdev->mtx);
2051 INIT_LIST_HEAD(&wdev->event_list);
2052 spin_lock_init(&wdev->event_lock);
2053 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2054 spin_lock_init(&wdev->mgmt_registrations_lock);
2055
2056 mutex_lock(&rdev->devlist_mtx);
2057 wdev->identifier = ++rdev->wdev_id;
2058 list_add_rcu(&wdev->list, &rdev->wdev_list);
2059 rdev->devlist_generation++;
2060 mutex_unlock(&rdev->devlist_mtx);
2061 break;
2062 default:
2063 break;
2064 }
2065
2066 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2067 rdev, wdev) < 0) {
2068 nlmsg_free(msg);
2069 return -ENOBUFS;
2070 }
2071
2072 return genlmsg_reply(msg, info);
2073 }
2074
2075 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2076 {
2077 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2078 struct wireless_dev *wdev = info->user_ptr[1];
2079
2080 if (!rdev->ops->del_virtual_intf)
2081 return -EOPNOTSUPP;
2082
2083 /*
2084 * If we remove a wireless device without a netdev then clear
2085 * user_ptr[1] so that nl80211_post_doit won't dereference it
2086 * to check if it needs to do dev_put(). Otherwise it crashes
2087 * since the wdev has been freed, unlike with a netdev where
2088 * we need the dev_put() for the netdev to really be freed.
2089 */
2090 if (!wdev->netdev)
2091 info->user_ptr[1] = NULL;
2092
2093 return rdev_del_virtual_intf(rdev, wdev);
2094 }
2095
2096 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2097 {
2098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2099 struct net_device *dev = info->user_ptr[1];
2100 u16 noack_map;
2101
2102 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2103 return -EINVAL;
2104
2105 if (!rdev->ops->set_noack_map)
2106 return -EOPNOTSUPP;
2107
2108 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2109
2110 return rdev_set_noack_map(rdev, dev, noack_map);
2111 }
2112
2113 struct get_key_cookie {
2114 struct sk_buff *msg;
2115 int error;
2116 int idx;
2117 };
2118
2119 static void get_key_callback(void *c, struct key_params *params)
2120 {
2121 struct nlattr *key;
2122 struct get_key_cookie *cookie = c;
2123
2124 if ((params->key &&
2125 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2126 params->key_len, params->key)) ||
2127 (params->seq &&
2128 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2129 params->seq_len, params->seq)) ||
2130 (params->cipher &&
2131 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2132 params->cipher)))
2133 goto nla_put_failure;
2134
2135 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2136 if (!key)
2137 goto nla_put_failure;
2138
2139 if ((params->key &&
2140 nla_put(cookie->msg, NL80211_KEY_DATA,
2141 params->key_len, params->key)) ||
2142 (params->seq &&
2143 nla_put(cookie->msg, NL80211_KEY_SEQ,
2144 params->seq_len, params->seq)) ||
2145 (params->cipher &&
2146 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2147 params->cipher)))
2148 goto nla_put_failure;
2149
2150 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2151 goto nla_put_failure;
2152
2153 nla_nest_end(cookie->msg, key);
2154
2155 return;
2156 nla_put_failure:
2157 cookie->error = 1;
2158 }
2159
2160 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2161 {
2162 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2163 int err;
2164 struct net_device *dev = info->user_ptr[1];
2165 u8 key_idx = 0;
2166 const u8 *mac_addr = NULL;
2167 bool pairwise;
2168 struct get_key_cookie cookie = {
2169 .error = 0,
2170 };
2171 void *hdr;
2172 struct sk_buff *msg;
2173
2174 if (info->attrs[NL80211_ATTR_KEY_IDX])
2175 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2176
2177 if (key_idx > 5)
2178 return -EINVAL;
2179
2180 if (info->attrs[NL80211_ATTR_MAC])
2181 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2182
2183 pairwise = !!mac_addr;
2184 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2185 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2186 if (kt >= NUM_NL80211_KEYTYPES)
2187 return -EINVAL;
2188 if (kt != NL80211_KEYTYPE_GROUP &&
2189 kt != NL80211_KEYTYPE_PAIRWISE)
2190 return -EINVAL;
2191 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2192 }
2193
2194 if (!rdev->ops->get_key)
2195 return -EOPNOTSUPP;
2196
2197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2198 if (!msg)
2199 return -ENOMEM;
2200
2201 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2202 NL80211_CMD_NEW_KEY);
2203 if (IS_ERR(hdr))
2204 return PTR_ERR(hdr);
2205
2206 cookie.msg = msg;
2207 cookie.idx = key_idx;
2208
2209 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2210 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2211 goto nla_put_failure;
2212 if (mac_addr &&
2213 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2214 goto nla_put_failure;
2215
2216 if (pairwise && mac_addr &&
2217 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2218 return -ENOENT;
2219
2220 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2221 get_key_callback);
2222
2223 if (err)
2224 goto free_msg;
2225
2226 if (cookie.error)
2227 goto nla_put_failure;
2228
2229 genlmsg_end(msg, hdr);
2230 return genlmsg_reply(msg, info);
2231
2232 nla_put_failure:
2233 err = -ENOBUFS;
2234 free_msg:
2235 nlmsg_free(msg);
2236 return err;
2237 }
2238
2239 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2240 {
2241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2242 struct key_parse key;
2243 int err;
2244 struct net_device *dev = info->user_ptr[1];
2245
2246 err = nl80211_parse_key(info, &key);
2247 if (err)
2248 return err;
2249
2250 if (key.idx < 0)
2251 return -EINVAL;
2252
2253 /* only support setting default key */
2254 if (!key.def && !key.defmgmt)
2255 return -EINVAL;
2256
2257 wdev_lock(dev->ieee80211_ptr);
2258
2259 if (key.def) {
2260 if (!rdev->ops->set_default_key) {
2261 err = -EOPNOTSUPP;
2262 goto out;
2263 }
2264
2265 err = nl80211_key_allowed(dev->ieee80211_ptr);
2266 if (err)
2267 goto out;
2268
2269 err = rdev_set_default_key(rdev, dev, key.idx,
2270 key.def_uni, key.def_multi);
2271
2272 if (err)
2273 goto out;
2274
2275 #ifdef CONFIG_CFG80211_WEXT
2276 dev->ieee80211_ptr->wext.default_key = key.idx;
2277 #endif
2278 } else {
2279 if (key.def_uni || !key.def_multi) {
2280 err = -EINVAL;
2281 goto out;
2282 }
2283
2284 if (!rdev->ops->set_default_mgmt_key) {
2285 err = -EOPNOTSUPP;
2286 goto out;
2287 }
2288
2289 err = nl80211_key_allowed(dev->ieee80211_ptr);
2290 if (err)
2291 goto out;
2292
2293 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2294 if (err)
2295 goto out;
2296
2297 #ifdef CONFIG_CFG80211_WEXT
2298 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2299 #endif
2300 }
2301
2302 out:
2303 wdev_unlock(dev->ieee80211_ptr);
2304
2305 return err;
2306 }
2307
2308 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2309 {
2310 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2311 int err;
2312 struct net_device *dev = info->user_ptr[1];
2313 struct key_parse key;
2314 const u8 *mac_addr = NULL;
2315
2316 err = nl80211_parse_key(info, &key);
2317 if (err)
2318 return err;
2319
2320 if (!key.p.key)
2321 return -EINVAL;
2322
2323 if (info->attrs[NL80211_ATTR_MAC])
2324 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2325
2326 if (key.type == -1) {
2327 if (mac_addr)
2328 key.type = NL80211_KEYTYPE_PAIRWISE;
2329 else
2330 key.type = NL80211_KEYTYPE_GROUP;
2331 }
2332
2333 /* for now */
2334 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2335 key.type != NL80211_KEYTYPE_GROUP)
2336 return -EINVAL;
2337
2338 if (!rdev->ops->add_key)
2339 return -EOPNOTSUPP;
2340
2341 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2342 key.type == NL80211_KEYTYPE_PAIRWISE,
2343 mac_addr))
2344 return -EINVAL;
2345
2346 wdev_lock(dev->ieee80211_ptr);
2347 err = nl80211_key_allowed(dev->ieee80211_ptr);
2348 if (!err)
2349 err = rdev_add_key(rdev, dev, key.idx,
2350 key.type == NL80211_KEYTYPE_PAIRWISE,
2351 mac_addr, &key.p);
2352 wdev_unlock(dev->ieee80211_ptr);
2353
2354 return err;
2355 }
2356
2357 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2358 {
2359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2360 int err;
2361 struct net_device *dev = info->user_ptr[1];
2362 u8 *mac_addr = NULL;
2363 struct key_parse key;
2364
2365 err = nl80211_parse_key(info, &key);
2366 if (err)
2367 return err;
2368
2369 if (info->attrs[NL80211_ATTR_MAC])
2370 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2371
2372 if (key.type == -1) {
2373 if (mac_addr)
2374 key.type = NL80211_KEYTYPE_PAIRWISE;
2375 else
2376 key.type = NL80211_KEYTYPE_GROUP;
2377 }
2378
2379 /* for now */
2380 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2381 key.type != NL80211_KEYTYPE_GROUP)
2382 return -EINVAL;
2383
2384 if (!rdev->ops->del_key)
2385 return -EOPNOTSUPP;
2386
2387 wdev_lock(dev->ieee80211_ptr);
2388 err = nl80211_key_allowed(dev->ieee80211_ptr);
2389
2390 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2391 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2392 err = -ENOENT;
2393
2394 if (!err)
2395 err = rdev_del_key(rdev, dev, key.idx,
2396 key.type == NL80211_KEYTYPE_PAIRWISE,
2397 mac_addr);
2398
2399 #ifdef CONFIG_CFG80211_WEXT
2400 if (!err) {
2401 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2402 dev->ieee80211_ptr->wext.default_key = -1;
2403 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2404 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2405 }
2406 #endif
2407 wdev_unlock(dev->ieee80211_ptr);
2408
2409 return err;
2410 }
2411
2412 static int nl80211_parse_beacon(struct genl_info *info,
2413 struct cfg80211_beacon_data *bcn)
2414 {
2415 bool haveinfo = false;
2416
2417 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2418 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2419 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2420 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2421 return -EINVAL;
2422
2423 memset(bcn, 0, sizeof(*bcn));
2424
2425 if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2426 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2427 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2428 if (!bcn->head_len)
2429 return -EINVAL;
2430 haveinfo = true;
2431 }
2432
2433 if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2434 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2435 bcn->tail_len =
2436 nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2437 haveinfo = true;
2438 }
2439
2440 if (!haveinfo)
2441 return -EINVAL;
2442
2443 if (info->attrs[NL80211_ATTR_IE]) {
2444 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2445 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2446 }
2447
2448 if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2449 bcn->proberesp_ies =
2450 nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2451 bcn->proberesp_ies_len =
2452 nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2453 }
2454
2455 if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2456 bcn->assocresp_ies =
2457 nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2458 bcn->assocresp_ies_len =
2459 nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2460 }
2461
2462 if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2463 bcn->probe_resp =
2464 nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2465 bcn->probe_resp_len =
2466 nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2467 }
2468
2469 return 0;
2470 }
2471
2472 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2473 struct cfg80211_ap_settings *params)
2474 {
2475 struct wireless_dev *wdev;
2476 bool ret = false;
2477
2478 mutex_lock(&rdev->devlist_mtx);
2479
2480 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2481 if (wdev->iftype != NL80211_IFTYPE_AP &&
2482 wdev->iftype != NL80211_IFTYPE_P2P_GO)
2483 continue;
2484
2485 if (!wdev->preset_chan)
2486 continue;
2487
2488 params->channel = wdev->preset_chan;
2489 params->channel_type = wdev->preset_chantype;
2490 ret = true;
2491 break;
2492 }
2493
2494 mutex_unlock(&rdev->devlist_mtx);
2495
2496 return ret;
2497 }
2498
2499 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2500 enum nl80211_auth_type auth_type,
2501 enum nl80211_commands cmd)
2502 {
2503 if (auth_type > NL80211_AUTHTYPE_MAX)
2504 return false;
2505
2506 switch (cmd) {
2507 case NL80211_CMD_AUTHENTICATE:
2508 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2509 auth_type == NL80211_AUTHTYPE_SAE)
2510 return false;
2511 return true;
2512 case NL80211_CMD_CONNECT:
2513 case NL80211_CMD_START_AP:
2514 /* SAE not supported yet */
2515 if (auth_type == NL80211_AUTHTYPE_SAE)
2516 return false;
2517 return true;
2518 default:
2519 return false;
2520 }
2521 }
2522
2523 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2524 {
2525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2526 struct net_device *dev = info->user_ptr[1];
2527 struct wireless_dev *wdev = dev->ieee80211_ptr;
2528 struct cfg80211_ap_settings params;
2529 int err;
2530
2531 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2532 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2533 return -EOPNOTSUPP;
2534
2535 if (!rdev->ops->start_ap)
2536 return -EOPNOTSUPP;
2537
2538 if (wdev->beacon_interval)
2539 return -EALREADY;
2540
2541 memset(&params, 0, sizeof(params));
2542
2543 /* these are required for START_AP */
2544 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2545 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2546 !info->attrs[NL80211_ATTR_BEACON_HEAD])
2547 return -EINVAL;
2548
2549 err = nl80211_parse_beacon(info, &params.beacon);
2550 if (err)
2551 return err;
2552
2553 params.beacon_interval =
2554 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2555 params.dtim_period =
2556 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2557
2558 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2559 if (err)
2560 return err;
2561
2562 /*
2563 * In theory, some of these attributes should be required here
2564 * but since they were not used when the command was originally
2565 * added, keep them optional for old user space programs to let
2566 * them continue to work with drivers that do not need the
2567 * additional information -- drivers must check!
2568 */
2569 if (info->attrs[NL80211_ATTR_SSID]) {
2570 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2571 params.ssid_len =
2572 nla_len(info->attrs[NL80211_ATTR_SSID]);
2573 if (params.ssid_len == 0 ||
2574 params.ssid_len > IEEE80211_MAX_SSID_LEN)
2575 return -EINVAL;
2576 }
2577
2578 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2579 params.hidden_ssid = nla_get_u32(
2580 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2581 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2582 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2583 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2584 return -EINVAL;
2585 }
2586
2587 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2588
2589 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2590 params.auth_type = nla_get_u32(
2591 info->attrs[NL80211_ATTR_AUTH_TYPE]);
2592 if (!nl80211_valid_auth_type(rdev, params.auth_type,
2593 NL80211_CMD_START_AP))
2594 return -EINVAL;
2595 } else
2596 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2597
2598 err = nl80211_crypto_settings(rdev, info, &params.crypto,
2599 NL80211_MAX_NR_CIPHER_SUITES);
2600 if (err)
2601 return err;
2602
2603 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2604 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2605 return -EOPNOTSUPP;
2606 params.inactivity_timeout = nla_get_u16(
2607 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2608 }
2609
2610 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2611 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2612
2613 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2614 !nl80211_valid_channel_type(info, &channel_type))
2615 return -EINVAL;
2616
2617 params.channel = rdev_freq_to_chan(rdev,
2618 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2619 channel_type);
2620 if (!params.channel)
2621 return -EINVAL;
2622 params.channel_type = channel_type;
2623 } else if (wdev->preset_chan) {
2624 params.channel = wdev->preset_chan;
2625 params.channel_type = wdev->preset_chantype;
2626 } else if (!nl80211_get_ap_channel(rdev, &params))
2627 return -EINVAL;
2628
2629 if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2630 params.channel_type))
2631 return -EINVAL;
2632
2633 mutex_lock(&rdev->devlist_mtx);
2634 err = cfg80211_can_use_chan(rdev, wdev, params.channel,
2635 CHAN_MODE_SHARED);
2636 mutex_unlock(&rdev->devlist_mtx);
2637
2638 if (err)
2639 return err;
2640
2641 err = rdev_start_ap(rdev, dev, &params);
2642 if (!err) {
2643 wdev->preset_chan = params.channel;
2644 wdev->preset_chantype = params.channel_type;
2645 wdev->beacon_interval = params.beacon_interval;
2646 wdev->channel = params.channel;
2647 }
2648 return err;
2649 }
2650
2651 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2652 {
2653 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2654 struct net_device *dev = info->user_ptr[1];
2655 struct wireless_dev *wdev = dev->ieee80211_ptr;
2656 struct cfg80211_beacon_data params;
2657 int err;
2658
2659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2660 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2661 return -EOPNOTSUPP;
2662
2663 if (!rdev->ops->change_beacon)
2664 return -EOPNOTSUPP;
2665
2666 if (!wdev->beacon_interval)
2667 return -EINVAL;
2668
2669 err = nl80211_parse_beacon(info, &params);
2670 if (err)
2671 return err;
2672
2673 return rdev_change_beacon(rdev, dev, &params);
2674 }
2675
2676 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2677 {
2678 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2679 struct net_device *dev = info->user_ptr[1];
2680
2681 return cfg80211_stop_ap(rdev, dev);
2682 }
2683
2684 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2685 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2686 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2687 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2688 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2689 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2690 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2691 };
2692
2693 static int parse_station_flags(struct genl_info *info,
2694 enum nl80211_iftype iftype,
2695 struct station_parameters *params)
2696 {
2697 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2698 struct nlattr *nla;
2699 int flag;
2700
2701 /*
2702 * Try parsing the new attribute first so userspace
2703 * can specify both for older kernels.
2704 */
2705 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2706 if (nla) {
2707 struct nl80211_sta_flag_update *sta_flags;
2708
2709 sta_flags = nla_data(nla);
2710 params->sta_flags_mask = sta_flags->mask;
2711 params->sta_flags_set = sta_flags->set;
2712 if ((params->sta_flags_mask |
2713 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2714 return -EINVAL;
2715 return 0;
2716 }
2717
2718 /* if present, parse the old attribute */
2719
2720 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2721 if (!nla)
2722 return 0;
2723
2724 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2725 nla, sta_flags_policy))
2726 return -EINVAL;
2727
2728 /*
2729 * Only allow certain flags for interface types so that
2730 * other attributes are silently ignored. Remember that
2731 * this is backward compatibility code with old userspace
2732 * and shouldn't be hit in other cases anyway.
2733 */
2734 switch (iftype) {
2735 case NL80211_IFTYPE_AP:
2736 case NL80211_IFTYPE_AP_VLAN:
2737 case NL80211_IFTYPE_P2P_GO:
2738 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2739 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2740 BIT(NL80211_STA_FLAG_WME) |
2741 BIT(NL80211_STA_FLAG_MFP);
2742 break;
2743 case NL80211_IFTYPE_P2P_CLIENT:
2744 case NL80211_IFTYPE_STATION:
2745 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2746 BIT(NL80211_STA_FLAG_TDLS_PEER);
2747 break;
2748 case NL80211_IFTYPE_MESH_POINT:
2749 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2750 BIT(NL80211_STA_FLAG_MFP) |
2751 BIT(NL80211_STA_FLAG_AUTHORIZED);
2752 default:
2753 return -EINVAL;
2754 }
2755
2756 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2757 if (flags[flag]) {
2758 params->sta_flags_set |= (1<<flag);
2759
2760 /* no longer support new API additions in old API */
2761 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2762 return -EINVAL;
2763 }
2764 }
2765
2766 return 0;
2767 }
2768
2769 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2770 int attr)
2771 {
2772 struct nlattr *rate;
2773 u32 bitrate;
2774 u16 bitrate_compat;
2775
2776 rate = nla_nest_start(msg, attr);
2777 if (!rate)
2778 goto nla_put_failure;
2779
2780 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2781 bitrate = cfg80211_calculate_bitrate(info);
2782 /* report 16-bit bitrate only if we can */
2783 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2784 if ((bitrate > 0 &&
2785 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) ||
2786 (bitrate_compat > 0 &&
2787 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) ||
2788 ((info->flags & RATE_INFO_FLAGS_MCS) &&
2789 nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2790 ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2791 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2792 ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2793 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2794 goto nla_put_failure;
2795
2796 nla_nest_end(msg, rate);
2797 return true;
2798
2799 nla_put_failure:
2800 return false;
2801 }
2802
2803 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
2804 int flags,
2805 struct cfg80211_registered_device *rdev,
2806 struct net_device *dev,
2807 const u8 *mac_addr, struct station_info *sinfo)
2808 {
2809 void *hdr;
2810 struct nlattr *sinfoattr, *bss_param;
2811
2812 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
2813 if (!hdr)
2814 return -1;
2815
2816 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2817 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2818 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2819 goto nla_put_failure;
2820
2821 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2822 if (!sinfoattr)
2823 goto nla_put_failure;
2824 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2825 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2826 sinfo->connected_time))
2827 goto nla_put_failure;
2828 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2829 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2830 sinfo->inactive_time))
2831 goto nla_put_failure;
2832 if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2833 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2834 sinfo->rx_bytes))
2835 goto nla_put_failure;
2836 if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2837 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2838 sinfo->tx_bytes))
2839 goto nla_put_failure;
2840 if ((sinfo->filled & STATION_INFO_LLID) &&
2841 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2842 goto nla_put_failure;
2843 if ((sinfo->filled & STATION_INFO_PLID) &&
2844 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2845 goto nla_put_failure;
2846 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2847 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2848 sinfo->plink_state))
2849 goto nla_put_failure;
2850 switch (rdev->wiphy.signal_type) {
2851 case CFG80211_SIGNAL_TYPE_MBM:
2852 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2853 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2854 sinfo->signal))
2855 goto nla_put_failure;
2856 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2857 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2858 sinfo->signal_avg))
2859 goto nla_put_failure;
2860 break;
2861 default:
2862 break;
2863 }
2864 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2865 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2866 NL80211_STA_INFO_TX_BITRATE))
2867 goto nla_put_failure;
2868 }
2869 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2870 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2871 NL80211_STA_INFO_RX_BITRATE))
2872 goto nla_put_failure;
2873 }
2874 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2875 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2876 sinfo->rx_packets))
2877 goto nla_put_failure;
2878 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2879 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2880 sinfo->tx_packets))
2881 goto nla_put_failure;
2882 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2883 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2884 sinfo->tx_retries))
2885 goto nla_put_failure;
2886 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2887 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2888 sinfo->tx_failed))
2889 goto nla_put_failure;
2890 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2891 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2892 sinfo->beacon_loss_count))
2893 goto nla_put_failure;
2894 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2895 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2896 if (!bss_param)
2897 goto nla_put_failure;
2898
2899 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2900 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2901 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2902 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2903 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2904 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2905 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2906 sinfo->bss_param.dtim_period) ||
2907 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2908 sinfo->bss_param.beacon_interval))
2909 goto nla_put_failure;
2910
2911 nla_nest_end(msg, bss_param);
2912 }
2913 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2914 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2915 sizeof(struct nl80211_sta_flag_update),
2916 &sinfo->sta_flags))
2917 goto nla_put_failure;
2918 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2919 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2920 sinfo->t_offset))
2921 goto nla_put_failure;
2922 nla_nest_end(msg, sinfoattr);
2923
2924 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2925 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2926 sinfo->assoc_req_ies))
2927 goto nla_put_failure;
2928
2929 return genlmsg_end(msg, hdr);
2930
2931 nla_put_failure:
2932 genlmsg_cancel(msg, hdr);
2933 return -EMSGSIZE;
2934 }
2935
2936 static int nl80211_dump_station(struct sk_buff *skb,
2937 struct netlink_callback *cb)
2938 {
2939 struct station_info sinfo;
2940 struct cfg80211_registered_device *dev;
2941 struct net_device *netdev;
2942 u8 mac_addr[ETH_ALEN];
2943 int sta_idx = cb->args[1];
2944 int err;
2945
2946 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2947 if (err)
2948 return err;
2949
2950 if (!dev->ops->dump_station) {
2951 err = -EOPNOTSUPP;
2952 goto out_err;
2953 }
2954
2955 while (1) {
2956 memset(&sinfo, 0, sizeof(sinfo));
2957 err = rdev_dump_station(dev, netdev, sta_idx,
2958 mac_addr, &sinfo);
2959 if (err == -ENOENT)
2960 break;
2961 if (err)
2962 goto out_err;
2963
2964 if (nl80211_send_station(skb,
2965 NETLINK_CB(cb->skb).portid,
2966 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2967 dev, netdev, mac_addr,
2968 &sinfo) < 0)
2969 goto out;
2970
2971 sta_idx++;
2972 }
2973
2974
2975 out:
2976 cb->args[1] = sta_idx;
2977 err = skb->len;
2978 out_err:
2979 nl80211_finish_netdev_dump(dev);
2980
2981 return err;
2982 }
2983
2984 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2985 {
2986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2987 struct net_device *dev = info->user_ptr[1];
2988 struct station_info sinfo;
2989 struct sk_buff *msg;
2990 u8 *mac_addr = NULL;
2991 int err;
2992
2993 memset(&sinfo, 0, sizeof(sinfo));
2994
2995 if (!info->attrs[NL80211_ATTR_MAC])
2996 return -EINVAL;
2997
2998 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2999
3000 if (!rdev->ops->get_station)
3001 return -EOPNOTSUPP;
3002
3003 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3004 if (err)
3005 return err;
3006
3007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3008 if (!msg)
3009 return -ENOMEM;
3010
3011 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3012 rdev, dev, mac_addr, &sinfo) < 0) {
3013 nlmsg_free(msg);
3014 return -ENOBUFS;
3015 }
3016
3017 return genlmsg_reply(msg, info);
3018 }
3019
3020 /*
3021 * Get vlan interface making sure it is running and on the right wiphy.
3022 */
3023 static struct net_device *get_vlan(struct genl_info *info,
3024 struct cfg80211_registered_device *rdev)
3025 {
3026 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3027 struct net_device *v;
3028 int ret;
3029
3030 if (!vlanattr)
3031 return NULL;
3032
3033 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3034 if (!v)
3035 return ERR_PTR(-ENODEV);
3036
3037 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3038 ret = -EINVAL;
3039 goto error;
3040 }
3041
3042 if (!netif_running(v)) {
3043 ret = -ENETDOWN;
3044 goto error;
3045 }
3046
3047 return v;
3048 error:
3049 dev_put(v);
3050 return ERR_PTR(ret);
3051 }
3052
3053 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3054 {
3055 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3056 int err;
3057 struct net_device *dev = info->user_ptr[1];
3058 struct station_parameters params;
3059 u8 *mac_addr = NULL;
3060
3061 memset(&params, 0, sizeof(params));
3062
3063 params.listen_interval = -1;
3064 params.plink_state = -1;
3065
3066 if (info->attrs[NL80211_ATTR_STA_AID])
3067 return -EINVAL;
3068
3069 if (!info->attrs[NL80211_ATTR_MAC])
3070 return -EINVAL;
3071
3072 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3073
3074 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3075 params.supported_rates =
3076 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3077 params.supported_rates_len =
3078 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3079 }
3080
3081 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3082 params.listen_interval =
3083 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3084
3085 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3086 params.ht_capa =
3087 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3088
3089 if (!rdev->ops->change_station)
3090 return -EOPNOTSUPP;
3091
3092 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3093 return -EINVAL;
3094
3095 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3096 params.plink_action =
3097 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3098
3099 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3100 params.plink_state =
3101 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3102
3103 switch (dev->ieee80211_ptr->iftype) {
3104 case NL80211_IFTYPE_AP:
3105 case NL80211_IFTYPE_AP_VLAN:
3106 case NL80211_IFTYPE_P2P_GO:
3107 /* disallow mesh-specific things */
3108 if (params.plink_action)
3109 return -EINVAL;
3110
3111 /* TDLS can't be set, ... */
3112 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3113 return -EINVAL;
3114 /*
3115 * ... but don't bother the driver with it. This works around
3116 * a hostapd/wpa_supplicant issue -- it always includes the
3117 * TLDS_PEER flag in the mask even for AP mode.
3118 */
3119 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3120
3121 /* accept only the listed bits */
3122 if (params.sta_flags_mask &
3123 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3124 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3125 BIT(NL80211_STA_FLAG_WME) |
3126 BIT(NL80211_STA_FLAG_MFP)))
3127 return -EINVAL;
3128
3129 /* must be last in here for error handling */
3130 params.vlan = get_vlan(info, rdev);
3131 if (IS_ERR(params.vlan))
3132 return PTR_ERR(params.vlan);
3133 break;
3134 case NL80211_IFTYPE_P2P_CLIENT:
3135 case NL80211_IFTYPE_STATION:
3136 /*
3137 * Don't allow userspace to change the TDLS_PEER flag,
3138 * but silently ignore attempts to change it since we
3139 * don't have state here to verify that it doesn't try
3140 * to change the flag.
3141 */
3142 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3143 /* fall through */
3144 case NL80211_IFTYPE_ADHOC:
3145 /* disallow things sta doesn't support */
3146 if (params.plink_action)
3147 return -EINVAL;
3148 if (params.ht_capa)
3149 return -EINVAL;
3150 if (params.listen_interval >= 0)
3151 return -EINVAL;
3152 /* reject any changes other than AUTHORIZED */
3153 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3154 return -EINVAL;
3155 break;
3156 case NL80211_IFTYPE_MESH_POINT:
3157 /* disallow things mesh doesn't support */
3158 if (params.vlan)
3159 return -EINVAL;
3160 if (params.ht_capa)
3161 return -EINVAL;
3162 if (params.listen_interval >= 0)
3163 return -EINVAL;
3164 /*
3165 * No special handling for TDLS here -- the userspace
3166 * mesh code doesn't have this bug.
3167 */
3168 if (params.sta_flags_mask &
3169 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3170 BIT(NL80211_STA_FLAG_MFP) |
3171 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3172 return -EINVAL;
3173 break;
3174 default:
3175 return -EOPNOTSUPP;
3176 }
3177
3178 /* be aware of params.vlan when changing code here */
3179
3180 err = rdev_change_station(rdev, dev, mac_addr, &params);
3181
3182 if (params.vlan)
3183 dev_put(params.vlan);
3184
3185 return err;
3186 }
3187
3188 static struct nla_policy
3189 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3190 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3191 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3192 };
3193
3194 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3195 {
3196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3197 int err;
3198 struct net_device *dev = info->user_ptr[1];
3199 struct station_parameters params;
3200 u8 *mac_addr = NULL;
3201
3202 memset(&params, 0, sizeof(params));
3203
3204 if (!info->attrs[NL80211_ATTR_MAC])
3205 return -EINVAL;
3206
3207 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3208 return -EINVAL;
3209
3210 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3211 return -EINVAL;
3212
3213 if (!info->attrs[NL80211_ATTR_STA_AID])
3214 return -EINVAL;
3215
3216 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3217 params.supported_rates =
3218 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3219 params.supported_rates_len =
3220 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3221 params.listen_interval =
3222 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3223
3224 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3225 if (!params.aid || params.aid > IEEE80211_MAX_AID)
3226 return -EINVAL;
3227
3228 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3229 params.ht_capa =
3230 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3231
3232 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3233 params.vht_capa =
3234 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3235
3236 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3237 params.plink_action =
3238 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3239
3240 if (!rdev->ops->add_station)
3241 return -EOPNOTSUPP;
3242
3243 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3244 return -EINVAL;
3245
3246 switch (dev->ieee80211_ptr->iftype) {
3247 case NL80211_IFTYPE_AP:
3248 case NL80211_IFTYPE_AP_VLAN:
3249 case NL80211_IFTYPE_P2P_GO:
3250 /* parse WME attributes if sta is WME capable */
3251 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3252 (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3253 info->attrs[NL80211_ATTR_STA_WME]) {
3254 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3255 struct nlattr *nla;
3256
3257 nla = info->attrs[NL80211_ATTR_STA_WME];
3258 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3259 nl80211_sta_wme_policy);
3260 if (err)
3261 return err;
3262
3263 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3264 params.uapsd_queues =
3265 nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3266 if (params.uapsd_queues &
3267 ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3268 return -EINVAL;
3269
3270 if (tb[NL80211_STA_WME_MAX_SP])
3271 params.max_sp =
3272 nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3273
3274 if (params.max_sp &
3275 ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3276 return -EINVAL;
3277
3278 params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3279 }
3280 /* TDLS peers cannot be added */
3281 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3282 return -EINVAL;
3283 /* but don't bother the driver with it */
3284 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3285
3286 /* must be last in here for error handling */
3287 params.vlan = get_vlan(info, rdev);
3288 if (IS_ERR(params.vlan))
3289 return PTR_ERR(params.vlan);
3290 break;
3291 case NL80211_IFTYPE_MESH_POINT:
3292 /* TDLS peers cannot be added */
3293 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3294 return -EINVAL;
3295 break;
3296 case NL80211_IFTYPE_STATION:
3297 /* Only TDLS peers can be added */
3298 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3299 return -EINVAL;
3300 /* Can only add if TDLS ... */
3301 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3302 return -EOPNOTSUPP;
3303 /* ... with external setup is supported */
3304 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3305 return -EOPNOTSUPP;
3306 break;
3307 default:
3308 return -EOPNOTSUPP;
3309 }
3310
3311 /* be aware of params.vlan when changing code here */
3312
3313 err = rdev_add_station(rdev, dev, mac_addr, &params);
3314
3315 if (params.vlan)
3316 dev_put(params.vlan);
3317 return err;
3318 }
3319
3320 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3321 {
3322 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3323 struct net_device *dev = info->user_ptr[1];
3324 u8 *mac_addr = NULL;
3325
3326 if (info->attrs[NL80211_ATTR_MAC])
3327 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3328
3329 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3330 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3331 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3332 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3333 return -EINVAL;
3334
3335 if (!rdev->ops->del_station)
3336 return -EOPNOTSUPP;
3337
3338 return rdev_del_station(rdev, dev, mac_addr);
3339 }
3340
3341 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
3342 int flags, struct net_device *dev,
3343 u8 *dst, u8 *next_hop,
3344 struct mpath_info *pinfo)
3345 {
3346 void *hdr;
3347 struct nlattr *pinfoattr;
3348
3349 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3350 if (!hdr)
3351 return -1;
3352
3353 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3354 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3355 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3356 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3357 goto nla_put_failure;
3358
3359 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3360 if (!pinfoattr)
3361 goto nla_put_failure;
3362 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3363 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3364 pinfo->frame_qlen))
3365 goto nla_put_failure;
3366 if (((pinfo->filled & MPATH_INFO_SN) &&
3367 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3368 ((pinfo->filled & MPATH_INFO_METRIC) &&
3369 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3370 pinfo->metric)) ||
3371 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3372 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3373 pinfo->exptime)) ||
3374 ((pinfo->filled & MPATH_INFO_FLAGS) &&
3375 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3376 pinfo->flags)) ||
3377 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3378 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3379 pinfo->discovery_timeout)) ||
3380 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3381 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3382 pinfo->discovery_retries)))
3383 goto nla_put_failure;
3384
3385 nla_nest_end(msg, pinfoattr);
3386
3387 return genlmsg_end(msg, hdr);
3388
3389 nla_put_failure:
3390 genlmsg_cancel(msg, hdr);
3391 return -EMSGSIZE;
3392 }
3393
3394 static int nl80211_dump_mpath(struct sk_buff *skb,
3395 struct netlink_callback *cb)
3396 {
3397 struct mpath_info pinfo;
3398 struct cfg80211_registered_device *dev;
3399 struct net_device *netdev;
3400 u8 dst[ETH_ALEN];
3401 u8 next_hop[ETH_ALEN];
3402 int path_idx = cb->args[1];
3403 int err;
3404
3405 err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3406 if (err)
3407 return err;
3408
3409 if (!dev->ops->dump_mpath) {
3410 err = -EOPNOTSUPP;
3411 goto out_err;
3412 }
3413
3414 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3415 err = -EOPNOTSUPP;
3416 goto out_err;
3417 }
3418
3419 while (1) {
3420 err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
3421 &pinfo);
3422 if (err == -ENOENT)
3423 break;
3424 if (err)
3425 goto out_err;
3426
3427 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
3428 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3429 netdev, dst, next_hop,
3430 &pinfo) < 0)
3431 goto out;
3432
3433 path_idx++;
3434 }
3435
3436
3437 out:
3438 cb->args[1] = path_idx;
3439 err = skb->len;
3440 out_err:
3441 nl80211_finish_netdev_dump(dev);
3442 return err;
3443 }
3444
3445 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3446 {
3447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3448 int err;
3449 struct net_device *dev = info->user_ptr[1];
3450 struct mpath_info pinfo;
3451 struct sk_buff *msg;
3452 u8 *dst = NULL;
3453 u8 next_hop[ETH_ALEN];
3454
3455 memset(&pinfo, 0, sizeof(pinfo));
3456
3457 if (!info->attrs[NL80211_ATTR_MAC])
3458 return -EINVAL;
3459
3460 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3461
3462 if (!rdev->ops->get_mpath)
3463 return -EOPNOTSUPP;
3464
3465 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3466 return -EOPNOTSUPP;
3467
3468 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
3469 if (err)
3470 return err;
3471
3472 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3473 if (!msg)
3474 return -ENOMEM;
3475
3476 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
3477 dev, dst, next_hop, &pinfo) < 0) {
3478 nlmsg_free(msg);
3479 return -ENOBUFS;
3480 }
3481
3482 return genlmsg_reply(msg, info);
3483 }
3484
3485 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3486 {
3487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3488 struct net_device *dev = info->user_ptr[1];
3489 u8 *dst = NULL;
3490 u8 *next_hop = NULL;
3491
3492 if (!info->attrs[NL80211_ATTR_MAC])
3493 return -EINVAL;
3494
3495 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3496 return -EINVAL;
3497
3498 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3499 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3500
3501 if (!rdev->ops->change_mpath)
3502 return -EOPNOTSUPP;
3503
3504 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3505 return -EOPNOTSUPP;
3506
3507 return rdev_change_mpath(rdev, dev, dst, next_hop);
3508 }
3509
3510 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3511 {
3512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3513 struct net_device *dev = info->user_ptr[1];
3514 u8 *dst = NULL;
3515 u8 *next_hop = NULL;
3516
3517 if (!info->attrs[NL80211_ATTR_MAC])
3518 return -EINVAL;
3519
3520 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3521 return -EINVAL;
3522
3523 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3524 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3525
3526 if (!rdev->ops->add_mpath)
3527 return -EOPNOTSUPP;
3528
3529 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3530 return -EOPNOTSUPP;
3531
3532 return rdev_add_mpath(rdev, dev, dst, next_hop);
3533 }
3534
3535 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3536 {
3537 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3538 struct net_device *dev = info->user_ptr[1];
3539 u8 *dst = NULL;
3540
3541 if (info->attrs[NL80211_ATTR_MAC])
3542 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3543
3544 if (!rdev->ops->del_mpath)
3545 return -EOPNOTSUPP;
3546
3547 return rdev_del_mpath(rdev, dev, dst);
3548 }
3549
3550 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3551 {
3552 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3553 struct net_device *dev = info->user_ptr[1];
3554 struct bss_parameters params;
3555
3556 memset(&params, 0, sizeof(params));
3557 /* default to not changing parameters */
3558 params.use_cts_prot = -1;
3559 params.use_short_preamble = -1;
3560 params.use_short_slot_time = -1;
3561 params.ap_isolate = -1;
3562 params.ht_opmode = -1;
3563
3564 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3565 params.use_cts_prot =
3566 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3567 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3568 params.use_short_preamble =
3569 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3570 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3571 params.use_short_slot_time =
3572 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3573 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3574 params.basic_rates =
3575 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3576 params.basic_rates_len =
3577 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3578 }
3579 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3580 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3581 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3582 params.ht_opmode =
3583 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3584
3585 if (!rdev->ops->change_bss)
3586 return -EOPNOTSUPP;
3587
3588 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3589 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3590 return -EOPNOTSUPP;
3591
3592 return rdev_change_bss(rdev, dev, &params);
3593 }
3594
3595 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3596 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
3597 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
3598 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
3599 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
3600 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
3601 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
3602 };
3603
3604 static int parse_reg_rule(struct nlattr *tb[],
3605 struct ieee80211_reg_rule *reg_rule)
3606 {
3607 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3608 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3609
3610 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3611 return -EINVAL;
3612 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3613 return -EINVAL;
3614 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3615 return -EINVAL;
3616 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3617 return -EINVAL;
3618 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3619 return -EINVAL;
3620
3621 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3622
3623 freq_range->start_freq_khz =
3624 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3625 freq_range->end_freq_khz =
3626 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3627 freq_range->max_bandwidth_khz =
3628 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3629
3630 power_rule->max_eirp =
3631 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3632
3633 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3634 power_rule->max_antenna_gain =
3635 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3636
3637 return 0;
3638 }
3639
3640 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3641 {
3642 int r;
3643 char *data = NULL;
3644 enum nl80211_user_reg_hint_type user_reg_hint_type;
3645
3646 /*
3647 * You should only get this when cfg80211 hasn't yet initialized
3648 * completely when built-in to the kernel right between the time
3649 * window between nl80211_init() and regulatory_init(), if that is
3650 * even possible.
3651 */
3652 mutex_lock(&cfg80211_mutex);
3653 if (unlikely(!cfg80211_regdomain)) {
3654 mutex_unlock(&cfg80211_mutex);
3655 return -EINPROGRESS;
3656 }
3657 mutex_unlock(&cfg80211_mutex);
3658
3659 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3660 return -EINVAL;
3661
3662 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3663
3664 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3665 user_reg_hint_type =
3666 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3667 else
3668 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3669
3670 switch (user_reg_hint_type) {
3671 case NL80211_USER_REG_HINT_USER:
3672 case NL80211_USER_REG_HINT_CELL_BASE:
3673 break;
3674 default:
3675 return -EINVAL;
3676 }
3677
3678 r = regulatory_hint_user(data, user_reg_hint_type);
3679
3680 return r;
3681 }
3682
3683 static int nl80211_get_mesh_config(struct sk_buff *skb,
3684 struct genl_info *info)
3685 {
3686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3687 struct net_device *dev = info->user_ptr[1];
3688 struct wireless_dev *wdev = dev->ieee80211_ptr;
3689 struct mesh_config cur_params;
3690 int err = 0;
3691 void *hdr;
3692 struct nlattr *pinfoattr;
3693 struct sk_buff *msg;
3694
3695 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3696 return -EOPNOTSUPP;
3697
3698 if (!rdev->ops->get_mesh_config)
3699 return -EOPNOTSUPP;
3700
3701 wdev_lock(wdev);
3702 /* If not connected, get default parameters */
3703 if (!wdev->mesh_id_len)
3704 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3705 else
3706 err = rdev_get_mesh_config(rdev, dev, &cur_params);
3707 wdev_unlock(wdev);
3708
3709 if (err)
3710 return err;
3711
3712 /* Draw up a netlink message to send back */
3713 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3714 if (!msg)
3715 return -ENOMEM;
3716 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3717 NL80211_CMD_GET_MESH_CONFIG);
3718 if (!hdr)
3719 goto out;
3720 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3721 if (!pinfoattr)
3722 goto nla_put_failure;
3723 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3724 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3725 cur_params.dot11MeshRetryTimeout) ||
3726 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3727 cur_params.dot11MeshConfirmTimeout) ||
3728 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3729 cur_params.dot11MeshHoldingTimeout) ||
3730 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3731 cur_params.dot11MeshMaxPeerLinks) ||
3732 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3733 cur_params.dot11MeshMaxRetries) ||
3734 nla_put_u8(msg, NL80211_MESHCONF_TTL,
3735 cur_params.dot11MeshTTL) ||
3736 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3737 cur_params.element_ttl) ||
3738 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3739 cur_params.auto_open_plinks) ||
3740 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3741 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3742 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3743 cur_params.dot11MeshHWMPmaxPREQretries) ||
3744 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3745 cur_params.path_refresh_time) ||
3746 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3747 cur_params.min_discovery_timeout) ||
3748 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3749 cur_params.dot11MeshHWMPactivePathTimeout) ||
3750 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3751 cur_params.dot11MeshHWMPpreqMinInterval) ||
3752 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3753 cur_params.dot11MeshHWMPperrMinInterval) ||
3754 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3755 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3756 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3757 cur_params.dot11MeshHWMPRootMode) ||
3758 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3759 cur_params.dot11MeshHWMPRannInterval) ||
3760 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3761 cur_params.dot11MeshGateAnnouncementProtocol) ||
3762 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3763 cur_params.dot11MeshForwarding) ||
3764 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3765 cur_params.rssi_threshold) ||
3766 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3767 cur_params.ht_opmode) ||
3768 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3769 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3770 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3771 cur_params.dot11MeshHWMProotInterval) ||
3772 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3773 cur_params.dot11MeshHWMPconfirmationInterval))
3774 goto nla_put_failure;
3775 nla_nest_end(msg, pinfoattr);
3776 genlmsg_end(msg, hdr);
3777 return genlmsg_reply(msg, info);
3778
3779 nla_put_failure:
3780 genlmsg_cancel(msg, hdr);
3781 out:
3782 nlmsg_free(msg);
3783 return -ENOBUFS;
3784 }
3785
3786 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3787 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3788 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3789 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3790 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3791 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3792 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3793 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3794 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3795 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3796 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3797 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3798 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3799 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3800 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3801 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3802 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3803 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3804 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3805 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3806 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3807 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3808 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3809 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3810 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3811 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3812 };
3813
3814 static const struct nla_policy
3815 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3816 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3817 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3818 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3819 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3820 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3821 .len = IEEE80211_MAX_DATA_LEN },
3822 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3823 };
3824
3825 static int nl80211_parse_mesh_config(struct genl_info *info,
3826 struct mesh_config *cfg,
3827 u32 *mask_out)
3828 {
3829 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3830 u32 mask = 0;
3831
3832 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3833 do {\
3834 if (table[attr_num]) {\
3835 cfg->param = nla_fn(table[attr_num]); \
3836 mask |= (1 << (attr_num - 1)); \
3837 } \
3838 } while (0);\
3839
3840
3841 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3842 return -EINVAL;
3843 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3844 info->attrs[NL80211_ATTR_MESH_CONFIG],
3845 nl80211_meshconf_params_policy))
3846 return -EINVAL;
3847
3848 /* This makes sure that there aren't more than 32 mesh config
3849 * parameters (otherwise our bitfield scheme would not work.) */
3850 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3851
3852 /* Fill in the params struct */
3853 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3854 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3855 nla_get_u16);
3856 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3857 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3858 nla_get_u16);
3859 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3860 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3861 nla_get_u16);
3862 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3863 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3864 nla_get_u16);
3865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3866 mask, NL80211_MESHCONF_MAX_RETRIES,
3867 nla_get_u8);
3868 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3869 mask, NL80211_MESHCONF_TTL, nla_get_u8);
3870 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3871 mask, NL80211_MESHCONF_ELEMENT_TTL,
3872 nla_get_u8);
3873 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3874 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3875 nla_get_u8);
3876 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3877 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3878 nla_get_u32);
3879 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3880 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3881 nla_get_u8);
3882 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3883 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3884 nla_get_u32);
3885 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3886 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3887 nla_get_u16);
3888 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3889 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3890 nla_get_u32);
3891 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3892 mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3893 nla_get_u16);
3894 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3895 mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3896 nla_get_u16);
3897 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3898 dot11MeshHWMPnetDiameterTraversalTime, mask,
3899 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3900 nla_get_u16);
3901 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3902 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3903 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3904 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3905 nla_get_u16);
3906 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3907 dot11MeshGateAnnouncementProtocol, mask,
3908 NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3909 nla_get_u8);
3910 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3911 mask, NL80211_MESHCONF_FORWARDING,
3912 nla_get_u8);
3913 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3914 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3915 nla_get_u32);
3916 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3917 mask, NL80211_MESHCONF_HT_OPMODE,
3918 nla_get_u16);
3919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3920 mask,
3921 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3922 nla_get_u32);
3923 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3924 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3925 nla_get_u16);
3926 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3927 dot11MeshHWMPconfirmationInterval, mask,
3928 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3929 nla_get_u16);
3930 if (mask_out)
3931 *mask_out = mask;
3932
3933 return 0;
3934
3935 #undef FILL_IN_MESH_PARAM_IF_SET
3936 }
3937
3938 static int nl80211_parse_mesh_setup(struct genl_info *info,
3939 struct mesh_setup *setup)
3940 {
3941 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3942
3943 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3944 return -EINVAL;
3945 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3946 info->attrs[NL80211_ATTR_MESH_SETUP],
3947 nl80211_mesh_setup_params_policy))
3948 return -EINVAL;
3949
3950 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3951 setup->sync_method =
3952 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3953 IEEE80211_SYNC_METHOD_VENDOR :
3954 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3955
3956 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3957 setup->path_sel_proto =
3958 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3959 IEEE80211_PATH_PROTOCOL_VENDOR :
3960 IEEE80211_PATH_PROTOCOL_HWMP;
3961
3962 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3963 setup->path_metric =
3964 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3965 IEEE80211_PATH_METRIC_VENDOR :
3966 IEEE80211_PATH_METRIC_AIRTIME;
3967
3968
3969 if (tb[NL80211_MESH_SETUP_IE]) {
3970 struct nlattr *ieattr =
3971 tb[NL80211_MESH_SETUP_IE];
3972 if (!is_valid_ie_attr(ieattr))
3973 return -EINVAL;
3974 setup->ie = nla_data(ieattr);
3975 setup->ie_len = nla_len(ieattr);
3976 }
3977 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3978 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3979
3980 return 0;
3981 }
3982
3983 static int nl80211_update_mesh_config(struct sk_buff *skb,
3984 struct genl_info *info)
3985 {
3986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3987 struct net_device *dev = info->user_ptr[1];
3988 struct wireless_dev *wdev = dev->ieee80211_ptr;
3989 struct mesh_config cfg;
3990 u32 mask;
3991 int err;
3992
3993 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3994 return -EOPNOTSUPP;
3995
3996 if (!rdev->ops->update_mesh_config)
3997 return -EOPNOTSUPP;
3998
3999 err = nl80211_parse_mesh_config(info, &cfg, &mask);
4000 if (err)
4001 return err;
4002
4003 wdev_lock(wdev);
4004 if (!wdev->mesh_id_len)
4005 err = -ENOLINK;
4006
4007 if (!err)
4008 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4009
4010 wdev_unlock(wdev);
4011
4012 return err;
4013 }
4014
4015 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4016 {
4017 struct sk_buff *msg;
4018 void *hdr = NULL;
4019 struct nlattr *nl_reg_rules;
4020 unsigned int i;
4021 int err = -EINVAL;
4022
4023 mutex_lock(&cfg80211_mutex);
4024
4025 if (!cfg80211_regdomain)
4026 goto out;
4027
4028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4029 if (!msg) {
4030 err = -ENOBUFS;
4031 goto out;
4032 }
4033
4034 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4035 NL80211_CMD_GET_REG);
4036 if (!hdr)
4037 goto put_failure;
4038
4039 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4040 cfg80211_regdomain->alpha2) ||
4041 (cfg80211_regdomain->dfs_region &&
4042 nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4043 cfg80211_regdomain->dfs_region)))
4044 goto nla_put_failure;
4045
4046 if (reg_last_request_cell_base() &&
4047 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4048 NL80211_USER_REG_HINT_CELL_BASE))
4049 goto nla_put_failure;
4050
4051 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4052 if (!nl_reg_rules)
4053 goto nla_put_failure;
4054
4055 for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4056 struct nlattr *nl_reg_rule;
4057 const struct ieee80211_reg_rule *reg_rule;
4058 const struct ieee80211_freq_range *freq_range;
4059 const struct ieee80211_power_rule *power_rule;
4060
4061 reg_rule = &cfg80211_regdomain->reg_rules[i];
4062 freq_range = &reg_rule->freq_range;
4063 power_rule = &reg_rule->power_rule;
4064
4065 nl_reg_rule = nla_nest_start(msg, i);
4066 if (!nl_reg_rule)
4067 goto nla_put_failure;
4068
4069 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4070 reg_rule->flags) ||
4071 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4072 freq_range->start_freq_khz) ||
4073 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4074 freq_range->end_freq_khz) ||
4075 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4076 freq_range->max_bandwidth_khz) ||
4077 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4078 power_rule->max_antenna_gain) ||
4079 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4080 power_rule->max_eirp))
4081 goto nla_put_failure;
4082
4083 nla_nest_end(msg, nl_reg_rule);
4084 }
4085
4086 nla_nest_end(msg, nl_reg_rules);
4087
4088 genlmsg_end(msg, hdr);
4089 err = genlmsg_reply(msg, info);
4090 goto out;
4091
4092 nla_put_failure:
4093 genlmsg_cancel(msg, hdr);
4094 put_failure:
4095 nlmsg_free(msg);
4096 err = -EMSGSIZE;
4097 out:
4098 mutex_unlock(&cfg80211_mutex);
4099 return err;
4100 }
4101
4102 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4103 {
4104 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4105 struct nlattr *nl_reg_rule;
4106 char *alpha2 = NULL;
4107 int rem_reg_rules = 0, r = 0;
4108 u32 num_rules = 0, rule_idx = 0, size_of_regd;
4109 u8 dfs_region = 0;
4110 struct ieee80211_regdomain *rd = NULL;
4111
4112 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4113 return -EINVAL;
4114
4115 if (!info->attrs[NL80211_ATTR_REG_RULES])
4116 return -EINVAL;
4117
4118 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4119
4120 if (info->attrs[NL80211_ATTR_DFS_REGION])
4121 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4122
4123 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4124 rem_reg_rules) {
4125 num_rules++;
4126 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4127 return -EINVAL;
4128 }
4129
4130 mutex_lock(&cfg80211_mutex);
4131
4132 if (!reg_is_valid_request(alpha2)) {
4133 r = -EINVAL;
4134 goto bad_reg;
4135 }
4136
4137 size_of_regd = sizeof(struct ieee80211_regdomain) +
4138 (num_rules * sizeof(struct ieee80211_reg_rule));
4139
4140 rd = kzalloc(size_of_regd, GFP_KERNEL);
4141 if (!rd) {
4142 r = -ENOMEM;
4143 goto bad_reg;
4144 }
4145
4146 rd->n_reg_rules = num_rules;
4147 rd->alpha2[0] = alpha2[0];
4148 rd->alpha2[1] = alpha2[1];
4149
4150 /*
4151 * Disable DFS master mode if the DFS region was
4152 * not supported or known on this kernel.
4153 */
4154 if (reg_supported_dfs_region(dfs_region))
4155 rd->dfs_region = dfs_region;
4156
4157 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4158 rem_reg_rules) {
4159 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4160 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4161 reg_rule_policy);
4162 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4163 if (r)
4164 goto bad_reg;
4165
4166 rule_idx++;
4167
4168 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4169 r = -EINVAL;
4170 goto bad_reg;
4171 }
4172 }
4173
4174 BUG_ON(rule_idx != num_rules);
4175
4176 r = set_regdom(rd);
4177
4178 mutex_unlock(&cfg80211_mutex);
4179
4180 return r;
4181
4182 bad_reg:
4183 mutex_unlock(&cfg80211_mutex);
4184 kfree(rd);
4185 return r;
4186 }
4187
4188 static int validate_scan_freqs(struct nlattr *freqs)
4189 {
4190 struct nlattr *attr1, *attr2;
4191 int n_channels = 0, tmp1, tmp2;
4192
4193 nla_for_each_nested(attr1, freqs, tmp1) {
4194 n_channels++;
4195 /*
4196 * Some hardware has a limited channel list for
4197 * scanning, and it is pretty much nonsensical
4198 * to scan for a channel twice, so disallow that
4199 * and don't require drivers to check that the
4200 * channel list they get isn't longer than what
4201 * they can scan, as long as they can scan all
4202 * the channels they registered at once.
4203 */
4204 nla_for_each_nested(attr2, freqs, tmp2)
4205 if (attr1 != attr2 &&
4206 nla_get_u32(attr1) == nla_get_u32(attr2))
4207 return 0;
4208 }
4209
4210 return n_channels;
4211 }
4212
4213 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4214 {
4215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4216 struct wireless_dev *wdev = info->user_ptr[1];
4217 struct cfg80211_scan_request *request;
4218 struct nlattr *attr;
4219 struct wiphy *wiphy;
4220 int err, tmp, n_ssids = 0, n_channels, i;
4221 size_t ie_len;
4222
4223 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4224 return -EINVAL;
4225
4226 wiphy = &rdev->wiphy;
4227
4228 if (!rdev->ops->scan)
4229 return -EOPNOTSUPP;
4230
4231 if (rdev->scan_req)
4232 return -EBUSY;
4233
4234 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4235 n_channels = validate_scan_freqs(
4236 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4237 if (!n_channels)
4238 return -EINVAL;
4239 } else {
4240 enum ieee80211_band band;
4241 n_channels = 0;
4242
4243 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4244 if (wiphy->bands[band])
4245 n_channels += wiphy->bands[band]->n_channels;
4246 }
4247
4248 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4249 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4250 n_ssids++;
4251
4252 if (n_ssids > wiphy->max_scan_ssids)
4253 return -EINVAL;
4254
4255 if (info->attrs[NL80211_ATTR_IE])
4256 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4257 else
4258 ie_len = 0;
4259
4260 if (ie_len > wiphy->max_scan_ie_len)
4261 return -EINVAL;
4262
4263 request = kzalloc(sizeof(*request)
4264 + sizeof(*request->ssids) * n_ssids
4265 + sizeof(*request->channels) * n_channels
4266 + ie_len, GFP_KERNEL);
4267 if (!request)
4268 return -ENOMEM;
4269
4270 if (n_ssids)
4271 request->ssids = (void *)&request->channels[n_channels];
4272 request->n_ssids = n_ssids;
4273 if (ie_len) {
4274 if (request->ssids)
4275 request->ie = (void *)(request->ssids + n_ssids);
4276 else
4277 request->ie = (void *)(request->channels + n_channels);
4278 }
4279
4280 i = 0;
4281 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4282 /* user specified, bail out if channel not found */
4283 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4284 struct ieee80211_channel *chan;
4285
4286 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4287
4288 if (!chan) {
4289 err = -EINVAL;
4290 goto out_free;
4291 }
4292
4293 /* ignore disabled channels */
4294 if (chan->flags & IEEE80211_CHAN_DISABLED)
4295 continue;
4296
4297 request->channels[i] = chan;
4298 i++;
4299 }
4300 } else {
4301 enum ieee80211_band band;
4302
4303 /* all channels */
4304 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4305 int j;
4306 if (!wiphy->bands[band])
4307 continue;
4308 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4309 struct ieee80211_channel *chan;
4310
4311 chan = &wiphy->bands[band]->channels[j];
4312
4313 if (chan->flags & IEEE80211_CHAN_DISABLED)
4314 continue;
4315
4316 request->channels[i] = chan;
4317 i++;
4318 }
4319 }
4320 }
4321
4322 if (!i) {
4323 err = -EINVAL;
4324 goto out_free;
4325 }
4326
4327 request->n_channels = i;
4328
4329 i = 0;
4330 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4331 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4332 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4333 err = -EINVAL;
4334 goto out_free;
4335 }
4336 request->ssids[i].ssid_len = nla_len(attr);
4337 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4338 i++;
4339 }
4340 }
4341
4342 if (info->attrs[NL80211_ATTR_IE]) {
4343 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4344 memcpy((void *)request->ie,
4345 nla_data(info->attrs[NL80211_ATTR_IE]),
4346 request->ie_len);
4347 }
4348
4349 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4350 if (wiphy->bands[i])
4351 request->rates[i] =
4352 (1 << wiphy->bands[i]->n_bitrates) - 1;
4353
4354 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4355 nla_for_each_nested(attr,
4356 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4357 tmp) {
4358 enum ieee80211_band band = nla_type(attr);
4359
4360 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4361 err = -EINVAL;
4362 goto out_free;
4363 }
4364 err = ieee80211_get_ratemask(wiphy->bands[band],
4365 nla_data(attr),
4366 nla_len(attr),
4367 &request->rates[band]);
4368 if (err)
4369 goto out_free;
4370 }
4371 }
4372
4373 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4374 request->flags = nla_get_u32(
4375 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4376 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4377 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4378 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4379 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4380 err = -EOPNOTSUPP;
4381 goto out_free;
4382 }
4383 }
4384
4385 request->no_cck =
4386 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4387
4388 request->wdev = wdev;
4389 request->wiphy = &rdev->wiphy;
4390 request->scan_start = jiffies;
4391
4392 rdev->scan_req = request;
4393 err = rdev_scan(rdev, request);
4394
4395 if (!err) {
4396 nl80211_send_scan_start(rdev, wdev);
4397 if (wdev->netdev)
4398 dev_hold(wdev->netdev);
4399 } else {
4400 out_free:
4401 rdev->scan_req = NULL;
4402 kfree(request);
4403 }
4404
4405 return err;
4406 }
4407
4408 static int nl80211_start_sched_scan(struct sk_buff *skb,
4409 struct genl_info *info)
4410 {
4411 struct cfg80211_sched_scan_request *request;
4412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4413 struct net_device *dev = info->user_ptr[1];
4414 struct nlattr *attr;
4415 struct wiphy *wiphy;
4416 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4417 u32 interval;
4418 enum ieee80211_band band;
4419 size_t ie_len;
4420 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4421
4422 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4423 !rdev->ops->sched_scan_start)
4424 return -EOPNOTSUPP;
4425
4426 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4427 return -EINVAL;
4428
4429 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4430 return -EINVAL;
4431
4432 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4433 if (interval == 0)
4434 return -EINVAL;
4435
4436 wiphy = &rdev->wiphy;
4437
4438 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4439 n_channels = validate_scan_freqs(
4440 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4441 if (!n_channels)
4442 return -EINVAL;
4443 } else {
4444 n_channels = 0;
4445
4446 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4447 if (wiphy->bands[band])
4448 n_channels += wiphy->bands[band]->n_channels;
4449 }
4450
4451 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4452 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4453 tmp)
4454 n_ssids++;
4455
4456 if (n_ssids > wiphy->max_sched_scan_ssids)
4457 return -EINVAL;
4458
4459 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4460 nla_for_each_nested(attr,
4461 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4462 tmp)
4463 n_match_sets++;
4464
4465 if (n_match_sets > wiphy->max_match_sets)
4466 return -EINVAL;
4467
4468 if (info->attrs[NL80211_ATTR_IE])
4469 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4470 else
4471 ie_len = 0;
4472
4473 if (ie_len > wiphy->max_sched_scan_ie_len)
4474 return -EINVAL;
4475
4476 mutex_lock(&rdev->sched_scan_mtx);
4477
4478 if (rdev->sched_scan_req) {
4479 err = -EINPROGRESS;
4480 goto out;
4481 }
4482
4483 request = kzalloc(sizeof(*request)
4484 + sizeof(*request->ssids) * n_ssids
4485 + sizeof(*request->match_sets) * n_match_sets
4486 + sizeof(*request->channels) * n_channels
4487 + ie_len, GFP_KERNEL);
4488 if (!request) {
4489 err = -ENOMEM;
4490 goto out;
4491 }
4492
4493 if (n_ssids)
4494 request->ssids = (void *)&request->channels[n_channels];
4495 request->n_ssids = n_ssids;
4496 if (ie_len) {
4497 if (request->ssids)
4498 request->ie = (void *)(request->ssids + n_ssids);
4499 else
4500 request->ie = (void *)(request->channels + n_channels);
4501 }
4502
4503 if (n_match_sets) {
4504 if (request->ie)
4505 request->match_sets = (void *)(request->ie + ie_len);
4506 else if (request->ssids)
4507 request->match_sets =
4508 (void *)(request->ssids + n_ssids);
4509 else
4510 request->match_sets =
4511 (void *)(request->channels + n_channels);
4512 }
4513 request->n_match_sets = n_match_sets;
4514
4515 i = 0;
4516 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4517 /* user specified, bail out if channel not found */
4518 nla_for_each_nested(attr,
4519 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4520 tmp) {
4521 struct ieee80211_channel *chan;
4522
4523 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4524
4525 if (!chan) {
4526 err = -EINVAL;
4527 goto out_free;
4528 }
4529
4530 /* ignore disabled channels */
4531 if (chan->flags & IEEE80211_CHAN_DISABLED)
4532 continue;
4533
4534 request->channels[i] = chan;
4535 i++;
4536 }
4537 } else {
4538 /* all channels */
4539 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4540 int j;
4541 if (!wiphy->bands[band])
4542 continue;
4543 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4544 struct ieee80211_channel *chan;
4545
4546 chan = &wiphy->bands[band]->channels[j];
4547
4548 if (chan->flags & IEEE80211_CHAN_DISABLED)
4549 continue;
4550
4551 request->channels[i] = chan;
4552 i++;
4553 }
4554 }
4555 }
4556
4557 if (!i) {
4558 err = -EINVAL;
4559 goto out_free;
4560 }
4561
4562 request->n_channels = i;
4563
4564 i = 0;
4565 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4566 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4567 tmp) {
4568 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4569 err = -EINVAL;
4570 goto out_free;
4571 }
4572 request->ssids[i].ssid_len = nla_len(attr);
4573 memcpy(request->ssids[i].ssid, nla_data(attr),
4574 nla_len(attr));
4575 i++;
4576 }
4577 }
4578
4579 i = 0;
4580 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4581 nla_for_each_nested(attr,
4582 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4583 tmp) {
4584 struct nlattr *ssid, *rssi;
4585
4586 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4587 nla_data(attr), nla_len(attr),
4588 nl80211_match_policy);
4589 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4590 if (ssid) {
4591 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4592 err = -EINVAL;
4593 goto out_free;
4594 }
4595 memcpy(request->match_sets[i].ssid.ssid,
4596 nla_data(ssid), nla_len(ssid));
4597 request->match_sets[i].ssid.ssid_len =
4598 nla_len(ssid);
4599 }
4600 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4601 if (rssi)
4602 request->rssi_thold = nla_get_u32(rssi);
4603 else
4604 request->rssi_thold =
4605 NL80211_SCAN_RSSI_THOLD_OFF;
4606 i++;
4607 }
4608 }
4609
4610 if (info->attrs[NL80211_ATTR_IE]) {
4611 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4612 memcpy((void *)request->ie,
4613 nla_data(info->attrs[NL80211_ATTR_IE]),
4614 request->ie_len);
4615 }
4616
4617 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4618 request->flags = nla_get_u32(
4619 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4620 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4621 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
4622 ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
4623 !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
4624 err = -EOPNOTSUPP;
4625 goto out_free;
4626 }
4627 }
4628
4629 request->dev = dev;
4630 request->wiphy = &rdev->wiphy;
4631 request->interval = interval;
4632 request->scan_start = jiffies;
4633
4634 err = rdev_sched_scan_start(rdev, dev, request);
4635 if (!err) {
4636 rdev->sched_scan_req = request;
4637 nl80211_send_sched_scan(rdev, dev,
4638 NL80211_CMD_START_SCHED_SCAN);
4639 goto out;
4640 }
4641
4642 out_free:
4643 kfree(request);
4644 out:
4645 mutex_unlock(&rdev->sched_scan_mtx);
4646 return err;
4647 }
4648
4649 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4650 struct genl_info *info)
4651 {
4652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4653 int err;
4654
4655 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4656 !rdev->ops->sched_scan_stop)
4657 return -EOPNOTSUPP;
4658
4659 mutex_lock(&rdev->sched_scan_mtx);
4660 err = __cfg80211_stop_sched_scan(rdev, false);
4661 mutex_unlock(&rdev->sched_scan_mtx);
4662
4663 return err;
4664 }
4665
4666 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4667 u32 seq, int flags,
4668 struct cfg80211_registered_device *rdev,
4669 struct wireless_dev *wdev,
4670 struct cfg80211_internal_bss *intbss)
4671 {
4672 struct cfg80211_bss *res = &intbss->pub;
4673 void *hdr;
4674 struct nlattr *bss;
4675
4676 ASSERT_WDEV_LOCK(wdev);
4677
4678 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
4679 NL80211_CMD_NEW_SCAN_RESULTS);
4680 if (!hdr)
4681 return -1;
4682
4683 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4684
4685 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4686 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4687 goto nla_put_failure;
4688
4689 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4690 if (!bss)
4691 goto nla_put_failure;
4692 if ((!is_zero_ether_addr(res->bssid) &&
4693 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4694 (res->information_elements && res->len_information_elements &&
4695 nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4696 res->len_information_elements,
4697 res->information_elements)) ||
4698 (res->beacon_ies && res->len_beacon_ies &&
4699 res->beacon_ies != res->information_elements &&
4700 nla_put(msg, NL80211_BSS_BEACON_IES,
4701 res->len_beacon_ies, res->beacon_ies)))
4702 goto nla_put_failure;
4703 if (res->tsf &&
4704 nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4705 goto nla_put_failure;
4706 if (res->beacon_interval &&
4707 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4708 goto nla_put_failure;
4709 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4710 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4711 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4712 jiffies_to_msecs(jiffies - intbss->ts)))
4713 goto nla_put_failure;
4714
4715 switch (rdev->wiphy.signal_type) {
4716 case CFG80211_SIGNAL_TYPE_MBM:
4717 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4718 goto nla_put_failure;
4719 break;
4720 case CFG80211_SIGNAL_TYPE_UNSPEC:
4721 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4722 goto nla_put_failure;
4723 break;
4724 default:
4725 break;
4726 }
4727
4728 switch (wdev->iftype) {
4729 case NL80211_IFTYPE_P2P_CLIENT:
4730 case NL80211_IFTYPE_STATION:
4731 if (intbss == wdev->current_bss &&
4732 nla_put_u32(msg, NL80211_BSS_STATUS,
4733 NL80211_BSS_STATUS_ASSOCIATED))
4734 goto nla_put_failure;
4735 break;
4736 case NL80211_IFTYPE_ADHOC:
4737 if (intbss == wdev->current_bss &&
4738 nla_put_u32(msg, NL80211_BSS_STATUS,
4739 NL80211_BSS_STATUS_IBSS_JOINED))
4740 goto nla_put_failure;
4741 break;
4742 default:
4743 break;
4744 }
4745
4746 nla_nest_end(msg, bss);
4747
4748 return genlmsg_end(msg, hdr);
4749
4750 nla_put_failure:
4751 genlmsg_cancel(msg, hdr);
4752 return -EMSGSIZE;
4753 }
4754
4755 static int nl80211_dump_scan(struct sk_buff *skb,
4756 struct netlink_callback *cb)
4757 {
4758 struct cfg80211_registered_device *rdev;
4759 struct net_device *dev;
4760 struct cfg80211_internal_bss *scan;
4761 struct wireless_dev *wdev;
4762 int start = cb->args[1], idx = 0;
4763 int err;
4764
4765 err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4766 if (err)
4767 return err;
4768
4769 wdev = dev->ieee80211_ptr;
4770
4771 wdev_lock(wdev);
4772 spin_lock_bh(&rdev->bss_lock);
4773 cfg80211_bss_expire(rdev);
4774
4775 cb->seq = rdev->bss_generation;
4776
4777 list_for_each_entry(scan, &rdev->bss_list, list) {
4778 if (++idx <= start)
4779 continue;
4780 if (nl80211_send_bss(skb, cb,
4781 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4782 rdev, wdev, scan) < 0) {
4783 idx--;
4784 break;
4785 }
4786 }
4787
4788 spin_unlock_bh(&rdev->bss_lock);
4789 wdev_unlock(wdev);
4790
4791 cb->args[1] = idx;
4792 nl80211_finish_netdev_dump(rdev);
4793
4794 return skb->len;
4795 }
4796
4797 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
4798 int flags, struct net_device *dev,
4799 struct survey_info *survey)
4800 {
4801 void *hdr;
4802 struct nlattr *infoattr;
4803
4804 hdr = nl80211hdr_put(msg, portid, seq, flags,
4805 NL80211_CMD_NEW_SURVEY_RESULTS);
4806 if (!hdr)
4807 return -ENOMEM;
4808
4809 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4810 goto nla_put_failure;
4811
4812 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4813 if (!infoattr)
4814 goto nla_put_failure;
4815
4816 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4817 survey->channel->center_freq))
4818 goto nla_put_failure;
4819
4820 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4821 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4822 goto nla_put_failure;
4823 if ((survey->filled & SURVEY_INFO_IN_USE) &&
4824 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4825 goto nla_put_failure;
4826 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4827 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4828 survey->channel_time))
4829 goto nla_put_failure;
4830 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4831 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4832 survey->channel_time_busy))
4833 goto nla_put_failure;
4834 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4835 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4836 survey->channel_time_ext_busy))
4837 goto nla_put_failure;
4838 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4839 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4840 survey->channel_time_rx))
4841 goto nla_put_failure;
4842 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4843 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4844 survey->channel_time_tx))
4845 goto nla_put_failure;
4846
4847 nla_nest_end(msg, infoattr);
4848
4849 return genlmsg_end(msg, hdr);
4850
4851 nla_put_failure:
4852 genlmsg_cancel(msg, hdr);
4853 return -EMSGSIZE;
4854 }
4855
4856 static int nl80211_dump_survey(struct sk_buff *skb,
4857 struct netlink_callback *cb)
4858 {
4859 struct survey_info survey;
4860 struct cfg80211_registered_device *dev;
4861 struct net_device *netdev;
4862 int survey_idx = cb->args[1];
4863 int res;
4864
4865 res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4866 if (res)
4867 return res;
4868
4869 if (!dev->ops->dump_survey) {
4870 res = -EOPNOTSUPP;
4871 goto out_err;
4872 }
4873
4874 while (1) {
4875 struct ieee80211_channel *chan;
4876
4877 res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
4878 if (res == -ENOENT)
4879 break;
4880 if (res)
4881 goto out_err;
4882
4883 /* Survey without a channel doesn't make sense */
4884 if (!survey.channel) {
4885 res = -EINVAL;
4886 goto out;
4887 }
4888
4889 chan = ieee80211_get_channel(&dev->wiphy,
4890 survey.channel->center_freq);
4891 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4892 survey_idx++;
4893 continue;
4894 }
4895
4896 if (nl80211_send_survey(skb,
4897 NETLINK_CB(cb->skb).portid,
4898 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4899 netdev,
4900 &survey) < 0)
4901 goto out;
4902 survey_idx++;
4903 }
4904
4905 out:
4906 cb->args[1] = survey_idx;
4907 res = skb->len;
4908 out_err:
4909 nl80211_finish_netdev_dump(dev);
4910 return res;
4911 }
4912
4913 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4914 {
4915 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4916 NL80211_WPA_VERSION_2));
4917 }
4918
4919 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4920 {
4921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4922 struct net_device *dev = info->user_ptr[1];
4923 struct ieee80211_channel *chan;
4924 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
4925 int err, ssid_len, ie_len = 0, sae_data_len = 0;
4926 enum nl80211_auth_type auth_type;
4927 struct key_parse key;
4928 bool local_state_change;
4929
4930 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4931 return -EINVAL;
4932
4933 if (!info->attrs[NL80211_ATTR_MAC])
4934 return -EINVAL;
4935
4936 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4937 return -EINVAL;
4938
4939 if (!info->attrs[NL80211_ATTR_SSID])
4940 return -EINVAL;
4941
4942 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4943 return -EINVAL;
4944
4945 err = nl80211_parse_key(info, &key);
4946 if (err)
4947 return err;
4948
4949 if (key.idx >= 0) {
4950 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4951 return -EINVAL;
4952 if (!key.p.key || !key.p.key_len)
4953 return -EINVAL;
4954 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4955 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4956 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4957 key.p.key_len != WLAN_KEY_LEN_WEP104))
4958 return -EINVAL;
4959 if (key.idx > 4)
4960 return -EINVAL;
4961 } else {
4962 key.p.key_len = 0;
4963 key.p.key = NULL;
4964 }
4965
4966 if (key.idx >= 0) {
4967 int i;
4968 bool ok = false;
4969 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4970 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4971 ok = true;
4972 break;
4973 }
4974 }
4975 if (!ok)
4976 return -EINVAL;
4977 }
4978
4979 if (!rdev->ops->auth)
4980 return -EOPNOTSUPP;
4981
4982 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4983 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4984 return -EOPNOTSUPP;
4985
4986 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4987 chan = ieee80211_get_channel(&rdev->wiphy,
4988 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4989 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4990 return -EINVAL;
4991
4992 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4993 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4994
4995 if (info->attrs[NL80211_ATTR_IE]) {
4996 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4997 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4998 }
4999
5000 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5001 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5002 return -EINVAL;
5003
5004 if (auth_type == NL80211_AUTHTYPE_SAE &&
5005 !info->attrs[NL80211_ATTR_SAE_DATA])
5006 return -EINVAL;
5007
5008 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5009 if (auth_type != NL80211_AUTHTYPE_SAE)
5010 return -EINVAL;
5011 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5012 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5013 /* need to include at least Auth Transaction and Status Code */
5014 if (sae_data_len < 4)
5015 return -EINVAL;
5016 }
5017
5018 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5019
5020 /*
5021 * Since we no longer track auth state, ignore
5022 * requests to only change local state.
5023 */
5024 if (local_state_change)
5025 return 0;
5026
5027 return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5028 ssid, ssid_len, ie, ie_len,
5029 key.p.key, key.p.key_len, key.idx,
5030 sae_data, sae_data_len);
5031 }
5032
5033 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5034 struct genl_info *info,
5035 struct cfg80211_crypto_settings *settings,
5036 int cipher_limit)
5037 {
5038 memset(settings, 0, sizeof(*settings));
5039
5040 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5041
5042 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5043 u16 proto;
5044 proto = nla_get_u16(
5045 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5046 settings->control_port_ethertype = cpu_to_be16(proto);
5047 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5048 proto != ETH_P_PAE)
5049 return -EINVAL;
5050 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5051 settings->control_port_no_encrypt = true;
5052 } else
5053 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5054
5055 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5056 void *data;
5057 int len, i;
5058
5059 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5060 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5061 settings->n_ciphers_pairwise = len / sizeof(u32);
5062
5063 if (len % sizeof(u32))
5064 return -EINVAL;
5065
5066 if (settings->n_ciphers_pairwise > cipher_limit)
5067 return -EINVAL;
5068
5069 memcpy(settings->ciphers_pairwise, data, len);
5070
5071 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5072 if (!cfg80211_supported_cipher_suite(
5073 &rdev->wiphy,
5074 settings->ciphers_pairwise[i]))
5075 return -EINVAL;
5076 }
5077
5078 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5079 settings->cipher_group =
5080 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5081 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5082 settings->cipher_group))
5083 return -EINVAL;
5084 }
5085
5086 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5087 settings->wpa_versions =
5088 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5089 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5090 return -EINVAL;
5091 }
5092
5093 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5094 void *data;
5095 int len;
5096
5097 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5098 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5099 settings->n_akm_suites = len / sizeof(u32);
5100
5101 if (len % sizeof(u32))
5102 return -EINVAL;
5103
5104 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5105 return -EINVAL;
5106
5107 memcpy(settings->akm_suites, data, len);
5108 }
5109
5110 return 0;
5111 }
5112
5113 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5114 {
5115 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5116 struct net_device *dev = info->user_ptr[1];
5117 struct cfg80211_crypto_settings crypto;
5118 struct ieee80211_channel *chan;
5119 const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5120 int err, ssid_len, ie_len = 0;
5121 bool use_mfp = false;
5122 u32 flags = 0;
5123 struct ieee80211_ht_cap *ht_capa = NULL;
5124 struct ieee80211_ht_cap *ht_capa_mask = NULL;
5125
5126 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5127 return -EINVAL;
5128
5129 if (!info->attrs[NL80211_ATTR_MAC] ||
5130 !info->attrs[NL80211_ATTR_SSID] ||
5131 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5132 return -EINVAL;
5133
5134 if (!rdev->ops->assoc)
5135 return -EOPNOTSUPP;
5136
5137 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5138 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5139 return -EOPNOTSUPP;
5140
5141 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5142
5143 chan = ieee80211_get_channel(&rdev->wiphy,
5144 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5145 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5146 return -EINVAL;
5147
5148 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5149 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5150
5151 if (info->attrs[NL80211_ATTR_IE]) {
5152 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5153 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5154 }
5155
5156 if (info->attrs[NL80211_ATTR_USE_MFP]) {
5157 enum nl80211_mfp mfp =
5158 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5159 if (mfp == NL80211_MFP_REQUIRED)
5160 use_mfp = true;
5161 else if (mfp != NL80211_MFP_NO)
5162 return -EINVAL;
5163 }
5164
5165 if (info->attrs[NL80211_ATTR_PREV_BSSID])
5166 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5167
5168 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5169 flags |= ASSOC_REQ_DISABLE_HT;
5170
5171 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5172 ht_capa_mask =
5173 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5174
5175 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5176 if (!ht_capa_mask)
5177 return -EINVAL;
5178 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5179 }
5180
5181 err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5182 if (!err)
5183 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5184 ssid, ssid_len, ie, ie_len, use_mfp,
5185 &crypto, flags, ht_capa,
5186 ht_capa_mask);
5187
5188 return err;
5189 }
5190
5191 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5192 {
5193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5194 struct net_device *dev = info->user_ptr[1];
5195 const u8 *ie = NULL, *bssid;
5196 int ie_len = 0;
5197 u16 reason_code;
5198 bool local_state_change;
5199
5200 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5201 return -EINVAL;
5202
5203 if (!info->attrs[NL80211_ATTR_MAC])
5204 return -EINVAL;
5205
5206 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5207 return -EINVAL;
5208
5209 if (!rdev->ops->deauth)
5210 return -EOPNOTSUPP;
5211
5212 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5213 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5214 return -EOPNOTSUPP;
5215
5216 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5217
5218 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5219 if (reason_code == 0) {
5220 /* Reason Code 0 is reserved */
5221 return -EINVAL;
5222 }
5223
5224 if (info->attrs[NL80211_ATTR_IE]) {
5225 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5226 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5227 }
5228
5229 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5230
5231 return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5232 local_state_change);
5233 }
5234
5235 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5236 {
5237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5238 struct net_device *dev = info->user_ptr[1];
5239 const u8 *ie = NULL, *bssid;
5240 int ie_len = 0;
5241 u16 reason_code;
5242 bool local_state_change;
5243
5244 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5245 return -EINVAL;
5246
5247 if (!info->attrs[NL80211_ATTR_MAC])
5248 return -EINVAL;
5249
5250 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5251 return -EINVAL;
5252
5253 if (!rdev->ops->disassoc)
5254 return -EOPNOTSUPP;
5255
5256 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5257 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5258 return -EOPNOTSUPP;
5259
5260 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5261
5262 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5263 if (reason_code == 0) {
5264 /* Reason Code 0 is reserved */
5265 return -EINVAL;
5266 }
5267
5268 if (info->attrs[NL80211_ATTR_IE]) {
5269 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5270 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5271 }
5272
5273 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5274
5275 return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5276 local_state_change);
5277 }
5278
5279 static bool
5280 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5281 int mcast_rate[IEEE80211_NUM_BANDS],
5282 int rateval)
5283 {
5284 struct wiphy *wiphy = &rdev->wiphy;
5285 bool found = false;
5286 int band, i;
5287
5288 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5289 struct ieee80211_supported_band *sband;
5290
5291 sband = wiphy->bands[band];
5292 if (!sband)
5293 continue;
5294
5295 for (i = 0; i < sband->n_bitrates; i++) {
5296 if (sband->bitrates[i].bitrate == rateval) {
5297 mcast_rate[band] = i + 1;
5298 found = true;
5299 break;
5300 }
5301 }
5302 }
5303
5304 return found;
5305 }
5306
5307 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5308 {
5309 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5310 struct net_device *dev = info->user_ptr[1];
5311 struct cfg80211_ibss_params ibss;
5312 struct wiphy *wiphy;
5313 struct cfg80211_cached_keys *connkeys = NULL;
5314 int err;
5315
5316 memset(&ibss, 0, sizeof(ibss));
5317
5318 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5319 return -EINVAL;
5320
5321 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5322 !info->attrs[NL80211_ATTR_SSID] ||
5323 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5324 return -EINVAL;
5325
5326 ibss.beacon_interval = 100;
5327
5328 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5329 ibss.beacon_interval =
5330 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5331 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5332 return -EINVAL;
5333 }
5334
5335 if (!rdev->ops->join_ibss)
5336 return -EOPNOTSUPP;
5337
5338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5339 return -EOPNOTSUPP;
5340
5341 wiphy = &rdev->wiphy;
5342
5343 if (info->attrs[NL80211_ATTR_MAC]) {
5344 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5345
5346 if (!is_valid_ether_addr(ibss.bssid))
5347 return -EINVAL;
5348 }
5349 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5350 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5351
5352 if (info->attrs[NL80211_ATTR_IE]) {
5353 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5354 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5355 }
5356
5357 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5358 enum nl80211_channel_type channel_type;
5359
5360 if (!nl80211_valid_channel_type(info, &channel_type))
5361 return -EINVAL;
5362
5363 if (channel_type != NL80211_CHAN_NO_HT &&
5364 !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5365 return -EINVAL;
5366
5367 ibss.channel_type = channel_type;
5368 } else {
5369 ibss.channel_type = NL80211_CHAN_NO_HT;
5370 }
5371
5372 ibss.channel = rdev_freq_to_chan(rdev,
5373 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5374 ibss.channel_type);
5375 if (!ibss.channel ||
5376 ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5377 ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5378 return -EINVAL;
5379
5380 /* Both channels should be able to initiate communication */
5381 if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5382 ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5383 !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5384 ibss.channel_type))
5385 return -EINVAL;
5386
5387 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5388 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5389
5390 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5391 u8 *rates =
5392 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5393 int n_rates =
5394 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5395 struct ieee80211_supported_band *sband =
5396 wiphy->bands[ibss.channel->band];
5397
5398 err = ieee80211_get_ratemask(sband, rates, n_rates,
5399 &ibss.basic_rates);
5400 if (err)
5401 return err;
5402 }
5403
5404 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5405 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5406 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5407 return -EINVAL;
5408
5409 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5410 bool no_ht = false;
5411
5412 connkeys = nl80211_parse_connkeys(rdev,
5413 info->attrs[NL80211_ATTR_KEYS],
5414 &no_ht);
5415 if (IS_ERR(connkeys))
5416 return PTR_ERR(connkeys);
5417
5418 if ((ibss.channel_type != NL80211_CHAN_NO_HT) && no_ht) {
5419 kfree(connkeys);
5420 return -EINVAL;
5421 }
5422 }
5423
5424 ibss.control_port =
5425 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5426
5427 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5428 if (err)
5429 kfree(connkeys);
5430 return err;
5431 }
5432
5433 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5434 {
5435 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5436 struct net_device *dev = info->user_ptr[1];
5437
5438 if (!rdev->ops->leave_ibss)
5439 return -EOPNOTSUPP;
5440
5441 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5442 return -EOPNOTSUPP;
5443
5444 return cfg80211_leave_ibss(rdev, dev, false);
5445 }
5446
5447 #ifdef CONFIG_NL80211_TESTMODE
5448 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5449 .name = "testmode",
5450 };
5451
5452 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5453 {
5454 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5455 int err;
5456
5457 if (!info->attrs[NL80211_ATTR_TESTDATA])
5458 return -EINVAL;
5459
5460 err = -EOPNOTSUPP;
5461 if (rdev->ops->testmode_cmd) {
5462 rdev->testmode_info = info;
5463 err = rdev_testmode_cmd(rdev,
5464 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5465 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5466 rdev->testmode_info = NULL;
5467 }
5468
5469 return err;
5470 }
5471
5472 static int nl80211_testmode_dump(struct sk_buff *skb,
5473 struct netlink_callback *cb)
5474 {
5475 struct cfg80211_registered_device *rdev;
5476 int err;
5477 long phy_idx;
5478 void *data = NULL;
5479 int data_len = 0;
5480
5481 if (cb->args[0]) {
5482 /*
5483 * 0 is a valid index, but not valid for args[0],
5484 * so we need to offset by 1.
5485 */
5486 phy_idx = cb->args[0] - 1;
5487 } else {
5488 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5489 nl80211_fam.attrbuf, nl80211_fam.maxattr,
5490 nl80211_policy);
5491 if (err)
5492 return err;
5493
5494 mutex_lock(&cfg80211_mutex);
5495 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5496 nl80211_fam.attrbuf);
5497 if (IS_ERR(rdev)) {
5498 mutex_unlock(&cfg80211_mutex);
5499 return PTR_ERR(rdev);
5500 }
5501 phy_idx = rdev->wiphy_idx;
5502 rdev = NULL;
5503 mutex_unlock(&cfg80211_mutex);
5504
5505 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5506 cb->args[1] =
5507 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5508 }
5509
5510 if (cb->args[1]) {
5511 data = nla_data((void *)cb->args[1]);
5512 data_len = nla_len((void *)cb->args[1]);
5513 }
5514
5515 mutex_lock(&cfg80211_mutex);
5516 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5517 if (!rdev) {
5518 mutex_unlock(&cfg80211_mutex);
5519 return -ENOENT;
5520 }
5521 cfg80211_lock_rdev(rdev);
5522 mutex_unlock(&cfg80211_mutex);
5523
5524 if (!rdev->ops->testmode_dump) {
5525 err = -EOPNOTSUPP;
5526 goto out_err;
5527 }
5528
5529 while (1) {
5530 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
5531 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5532 NL80211_CMD_TESTMODE);
5533 struct nlattr *tmdata;
5534
5535 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5536 genlmsg_cancel(skb, hdr);
5537 break;
5538 }
5539
5540 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5541 if (!tmdata) {
5542 genlmsg_cancel(skb, hdr);
5543 break;
5544 }
5545 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
5546 nla_nest_end(skb, tmdata);
5547
5548 if (err == -ENOBUFS || err == -ENOENT) {
5549 genlmsg_cancel(skb, hdr);
5550 break;
5551 } else if (err) {
5552 genlmsg_cancel(skb, hdr);
5553 goto out_err;
5554 }
5555
5556 genlmsg_end(skb, hdr);
5557 }
5558
5559 err = skb->len;
5560 /* see above */
5561 cb->args[0] = phy_idx + 1;
5562 out_err:
5563 cfg80211_unlock_rdev(rdev);
5564 return err;
5565 }
5566
5567 static struct sk_buff *
5568 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5569 int approxlen, u32 portid, u32 seq, gfp_t gfp)
5570 {
5571 struct sk_buff *skb;
5572 void *hdr;
5573 struct nlattr *data;
5574
5575 skb = nlmsg_new(approxlen + 100, gfp);
5576 if (!skb)
5577 return NULL;
5578
5579 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
5580 if (!hdr) {
5581 kfree_skb(skb);
5582 return NULL;
5583 }
5584
5585 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5586 goto nla_put_failure;
5587 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5588
5589 ((void **)skb->cb)[0] = rdev;
5590 ((void **)skb->cb)[1] = hdr;
5591 ((void **)skb->cb)[2] = data;
5592
5593 return skb;
5594
5595 nla_put_failure:
5596 kfree_skb(skb);
5597 return NULL;
5598 }
5599
5600 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5601 int approxlen)
5602 {
5603 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5604
5605 if (WARN_ON(!rdev->testmode_info))
5606 return NULL;
5607
5608 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5609 rdev->testmode_info->snd_portid,
5610 rdev->testmode_info->snd_seq,
5611 GFP_KERNEL);
5612 }
5613 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5614
5615 int cfg80211_testmode_reply(struct sk_buff *skb)
5616 {
5617 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5618 void *hdr = ((void **)skb->cb)[1];
5619 struct nlattr *data = ((void **)skb->cb)[2];
5620
5621 if (WARN_ON(!rdev->testmode_info)) {
5622 kfree_skb(skb);
5623 return -EINVAL;
5624 }
5625
5626 nla_nest_end(skb, data);
5627 genlmsg_end(skb, hdr);
5628 return genlmsg_reply(skb, rdev->testmode_info);
5629 }
5630 EXPORT_SYMBOL(cfg80211_testmode_reply);
5631
5632 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5633 int approxlen, gfp_t gfp)
5634 {
5635 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5636
5637 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5638 }
5639 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5640
5641 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5642 {
5643 void *hdr = ((void **)skb->cb)[1];
5644 struct nlattr *data = ((void **)skb->cb)[2];
5645
5646 nla_nest_end(skb, data);
5647 genlmsg_end(skb, hdr);
5648 genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5649 }
5650 EXPORT_SYMBOL(cfg80211_testmode_event);
5651 #endif
5652
5653 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5654 {
5655 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5656 struct net_device *dev = info->user_ptr[1];
5657 struct cfg80211_connect_params connect;
5658 struct wiphy *wiphy;
5659 struct cfg80211_cached_keys *connkeys = NULL;
5660 int err;
5661
5662 memset(&connect, 0, sizeof(connect));
5663
5664 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5665 return -EINVAL;
5666
5667 if (!info->attrs[NL80211_ATTR_SSID] ||
5668 !nla_len(info->attrs[NL80211_ATTR_SSID]))
5669 return -EINVAL;
5670
5671 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5672 connect.auth_type =
5673 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5674 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
5675 NL80211_CMD_CONNECT))
5676 return -EINVAL;
5677 } else
5678 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5679
5680 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5681
5682 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5683 NL80211_MAX_NR_CIPHER_SUITES);
5684 if (err)
5685 return err;
5686
5687 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5688 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5689 return -EOPNOTSUPP;
5690
5691 wiphy = &rdev->wiphy;
5692
5693 connect.bg_scan_period = -1;
5694 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5695 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5696 connect.bg_scan_period =
5697 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5698 }
5699
5700 if (info->attrs[NL80211_ATTR_MAC])
5701 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5702 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5703 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5704
5705 if (info->attrs[NL80211_ATTR_IE]) {
5706 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5707 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5708 }
5709
5710 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5711 connect.channel =
5712 ieee80211_get_channel(wiphy,
5713 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5714 if (!connect.channel ||
5715 connect.channel->flags & IEEE80211_CHAN_DISABLED)
5716 return -EINVAL;
5717 }
5718
5719 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5720 connkeys = nl80211_parse_connkeys(rdev,
5721 info->attrs[NL80211_ATTR_KEYS], NULL);
5722 if (IS_ERR(connkeys))
5723 return PTR_ERR(connkeys);
5724 }
5725
5726 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5727 connect.flags |= ASSOC_REQ_DISABLE_HT;
5728
5729 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5730 memcpy(&connect.ht_capa_mask,
5731 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5732 sizeof(connect.ht_capa_mask));
5733
5734 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5735 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5736 kfree(connkeys);
5737 return -EINVAL;
5738 }
5739 memcpy(&connect.ht_capa,
5740 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5741 sizeof(connect.ht_capa));
5742 }
5743
5744 err = cfg80211_connect(rdev, dev, &connect, connkeys);
5745 if (err)
5746 kfree(connkeys);
5747 return err;
5748 }
5749
5750 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5751 {
5752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5753 struct net_device *dev = info->user_ptr[1];
5754 u16 reason;
5755
5756 if (!info->attrs[NL80211_ATTR_REASON_CODE])
5757 reason = WLAN_REASON_DEAUTH_LEAVING;
5758 else
5759 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5760
5761 if (reason == 0)
5762 return -EINVAL;
5763
5764 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5765 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5766 return -EOPNOTSUPP;
5767
5768 return cfg80211_disconnect(rdev, dev, reason, true);
5769 }
5770
5771 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5772 {
5773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5774 struct net *net;
5775 int err;
5776 u32 pid;
5777
5778 if (!info->attrs[NL80211_ATTR_PID])
5779 return -EINVAL;
5780
5781 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5782
5783 net = get_net_ns_by_pid(pid);
5784 if (IS_ERR(net))
5785 return PTR_ERR(net);
5786
5787 err = 0;
5788
5789 /* check if anything to do */
5790 if (!net_eq(wiphy_net(&rdev->wiphy), net))
5791 err = cfg80211_switch_netns(rdev, net);
5792
5793 put_net(net);
5794 return err;
5795 }
5796
5797 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5798 {
5799 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5800 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5801 struct cfg80211_pmksa *pmksa) = NULL;
5802 struct net_device *dev = info->user_ptr[1];
5803 struct cfg80211_pmksa pmksa;
5804
5805 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5806
5807 if (!info->attrs[NL80211_ATTR_MAC])
5808 return -EINVAL;
5809
5810 if (!info->attrs[NL80211_ATTR_PMKID])
5811 return -EINVAL;
5812
5813 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5814 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5815
5816 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5817 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5818 return -EOPNOTSUPP;
5819
5820 switch (info->genlhdr->cmd) {
5821 case NL80211_CMD_SET_PMKSA:
5822 rdev_ops = rdev->ops->set_pmksa;
5823 break;
5824 case NL80211_CMD_DEL_PMKSA:
5825 rdev_ops = rdev->ops->del_pmksa;
5826 break;
5827 default:
5828 WARN_ON(1);
5829 break;
5830 }
5831
5832 if (!rdev_ops)
5833 return -EOPNOTSUPP;
5834
5835 return rdev_ops(&rdev->wiphy, dev, &pmksa);
5836 }
5837
5838 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5839 {
5840 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5841 struct net_device *dev = info->user_ptr[1];
5842
5843 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5844 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5845 return -EOPNOTSUPP;
5846
5847 if (!rdev->ops->flush_pmksa)
5848 return -EOPNOTSUPP;
5849
5850 return rdev_flush_pmksa(rdev, dev);
5851 }
5852
5853 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5854 {
5855 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5856 struct net_device *dev = info->user_ptr[1];
5857 u8 action_code, dialog_token;
5858 u16 status_code;
5859 u8 *peer;
5860
5861 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5862 !rdev->ops->tdls_mgmt)
5863 return -EOPNOTSUPP;
5864
5865 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5866 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5867 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5868 !info->attrs[NL80211_ATTR_IE] ||
5869 !info->attrs[NL80211_ATTR_MAC])
5870 return -EINVAL;
5871
5872 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5873 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5874 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5875 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5876
5877 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
5878 dialog_token, status_code,
5879 nla_data(info->attrs[NL80211_ATTR_IE]),
5880 nla_len(info->attrs[NL80211_ATTR_IE]));
5881 }
5882
5883 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5884 {
5885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5886 struct net_device *dev = info->user_ptr[1];
5887 enum nl80211_tdls_operation operation;
5888 u8 *peer;
5889
5890 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5891 !rdev->ops->tdls_oper)
5892 return -EOPNOTSUPP;
5893
5894 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5895 !info->attrs[NL80211_ATTR_MAC])
5896 return -EINVAL;
5897
5898 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5899 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5900
5901 return rdev_tdls_oper(rdev, dev, peer, operation);
5902 }
5903
5904 static int nl80211_remain_on_channel(struct sk_buff *skb,
5905 struct genl_info *info)
5906 {
5907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5908 struct wireless_dev *wdev = info->user_ptr[1];
5909 struct ieee80211_channel *chan;
5910 struct sk_buff *msg;
5911 void *hdr;
5912 u64 cookie;
5913 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5914 u32 freq, duration;
5915 int err;
5916
5917 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5918 !info->attrs[NL80211_ATTR_DURATION])
5919 return -EINVAL;
5920
5921 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5922
5923 if (!rdev->ops->remain_on_channel ||
5924 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5925 return -EOPNOTSUPP;
5926
5927 /*
5928 * We should be on that channel for at least a minimum amount of
5929 * time (10ms) but no longer than the driver supports.
5930 */
5931 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5932 duration > rdev->wiphy.max_remain_on_channel_duration)
5933 return -EINVAL;
5934
5935 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5936 !nl80211_valid_channel_type(info, &channel_type))
5937 return -EINVAL;
5938
5939 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5940 chan = rdev_freq_to_chan(rdev, freq, channel_type);
5941 if (chan == NULL)
5942 return -EINVAL;
5943
5944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5945 if (!msg)
5946 return -ENOMEM;
5947
5948 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5949 NL80211_CMD_REMAIN_ON_CHANNEL);
5950
5951 if (IS_ERR(hdr)) {
5952 err = PTR_ERR(hdr);
5953 goto free_msg;
5954 }
5955
5956 err = rdev_remain_on_channel(rdev, wdev, chan, channel_type, duration,
5957 &cookie);
5958
5959 if (err)
5960 goto free_msg;
5961
5962 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5963 goto nla_put_failure;
5964
5965 genlmsg_end(msg, hdr);
5966
5967 return genlmsg_reply(msg, info);
5968
5969 nla_put_failure:
5970 err = -ENOBUFS;
5971 free_msg:
5972 nlmsg_free(msg);
5973 return err;
5974 }
5975
5976 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5977 struct genl_info *info)
5978 {
5979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5980 struct wireless_dev *wdev = info->user_ptr[1];
5981 u64 cookie;
5982
5983 if (!info->attrs[NL80211_ATTR_COOKIE])
5984 return -EINVAL;
5985
5986 if (!rdev->ops->cancel_remain_on_channel)
5987 return -EOPNOTSUPP;
5988
5989 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5990
5991 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
5992 }
5993
5994 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5995 u8 *rates, u8 rates_len)
5996 {
5997 u8 i;
5998 u32 mask = 0;
5999
6000 for (i = 0; i < rates_len; i++) {
6001 int rate = (rates[i] & 0x7f) * 5;
6002 int ridx;
6003 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6004 struct ieee80211_rate *srate =
6005 &sband->bitrates[ridx];
6006 if (rate == srate->bitrate) {
6007 mask |= 1 << ridx;
6008 break;
6009 }
6010 }
6011 if (ridx == sband->n_bitrates)
6012 return 0; /* rate not found */
6013 }
6014
6015 return mask;
6016 }
6017
6018 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6019 u8 *rates, u8 rates_len,
6020 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6021 {
6022 u8 i;
6023
6024 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6025
6026 for (i = 0; i < rates_len; i++) {
6027 int ridx, rbit;
6028
6029 ridx = rates[i] / 8;
6030 rbit = BIT(rates[i] % 8);
6031
6032 /* check validity */
6033 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6034 return false;
6035
6036 /* check availability */
6037 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6038 mcs[ridx] |= rbit;
6039 else
6040 return false;
6041 }
6042
6043 return true;
6044 }
6045
6046 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6047 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6048 .len = NL80211_MAX_SUPP_RATES },
6049 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6050 .len = NL80211_MAX_SUPP_HT_RATES },
6051 };
6052
6053 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6054 struct genl_info *info)
6055 {
6056 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6058 struct cfg80211_bitrate_mask mask;
6059 int rem, i;
6060 struct net_device *dev = info->user_ptr[1];
6061 struct nlattr *tx_rates;
6062 struct ieee80211_supported_band *sband;
6063
6064 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
6065 return -EINVAL;
6066
6067 if (!rdev->ops->set_bitrate_mask)
6068 return -EOPNOTSUPP;
6069
6070 memset(&mask, 0, sizeof(mask));
6071 /* Default to all rates enabled */
6072 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
6073 sband = rdev->wiphy.bands[i];
6074 mask.control[i].legacy =
6075 sband ? (1 << sband->n_bitrates) - 1 : 0;
6076 if (sband)
6077 memcpy(mask.control[i].mcs,
6078 sband->ht_cap.mcs.rx_mask,
6079 sizeof(mask.control[i].mcs));
6080 else
6081 memset(mask.control[i].mcs, 0,
6082 sizeof(mask.control[i].mcs));
6083 }
6084
6085 /*
6086 * The nested attribute uses enum nl80211_band as the index. This maps
6087 * directly to the enum ieee80211_band values used in cfg80211.
6088 */
6089 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6090 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6091 {
6092 enum ieee80211_band band = nla_type(tx_rates);
6093 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6094 return -EINVAL;
6095 sband = rdev->wiphy.bands[band];
6096 if (sband == NULL)
6097 return -EINVAL;
6098 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6099 nla_len(tx_rates), nl80211_txattr_policy);
6100 if (tb[NL80211_TXRATE_LEGACY]) {
6101 mask.control[band].legacy = rateset_to_mask(
6102 sband,
6103 nla_data(tb[NL80211_TXRATE_LEGACY]),
6104 nla_len(tb[NL80211_TXRATE_LEGACY]));
6105 if ((mask.control[band].legacy == 0) &&
6106 nla_len(tb[NL80211_TXRATE_LEGACY]))
6107 return -EINVAL;
6108 }
6109 if (tb[NL80211_TXRATE_MCS]) {
6110 if (!ht_rateset_to_mask(
6111 sband,
6112 nla_data(tb[NL80211_TXRATE_MCS]),
6113 nla_len(tb[NL80211_TXRATE_MCS]),
6114 mask.control[band].mcs))
6115 return -EINVAL;
6116 }
6117
6118 if (mask.control[band].legacy == 0) {
6119 /* don't allow empty legacy rates if HT
6120 * is not even supported. */
6121 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6122 return -EINVAL;
6123
6124 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6125 if (mask.control[band].mcs[i])
6126 break;
6127
6128 /* legacy and mcs rates may not be both empty */
6129 if (i == IEEE80211_HT_MCS_MASK_LEN)
6130 return -EINVAL;
6131 }
6132 }
6133
6134 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
6135 }
6136
6137 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6138 {
6139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6140 struct wireless_dev *wdev = info->user_ptr[1];
6141 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6142
6143 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6144 return -EINVAL;
6145
6146 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6147 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6148
6149 switch (wdev->iftype) {
6150 case NL80211_IFTYPE_STATION:
6151 case NL80211_IFTYPE_ADHOC:
6152 case NL80211_IFTYPE_P2P_CLIENT:
6153 case NL80211_IFTYPE_AP:
6154 case NL80211_IFTYPE_AP_VLAN:
6155 case NL80211_IFTYPE_MESH_POINT:
6156 case NL80211_IFTYPE_P2P_GO:
6157 case NL80211_IFTYPE_P2P_DEVICE:
6158 break;
6159 default:
6160 return -EOPNOTSUPP;
6161 }
6162
6163 /* not much point in registering if we can't reply */
6164 if (!rdev->ops->mgmt_tx)
6165 return -EOPNOTSUPP;
6166
6167 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
6168 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6169 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6170 }
6171
6172 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
6173 {
6174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6175 struct wireless_dev *wdev = info->user_ptr[1];
6176 struct ieee80211_channel *chan;
6177 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6178 bool channel_type_valid = false;
6179 u32 freq;
6180 int err;
6181 void *hdr = NULL;
6182 u64 cookie;
6183 struct sk_buff *msg = NULL;
6184 unsigned int wait = 0;
6185 bool offchan, no_cck, dont_wait_for_ack;
6186
6187 dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6188
6189 if (!info->attrs[NL80211_ATTR_FRAME] ||
6190 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6191 return -EINVAL;
6192
6193 if (!rdev->ops->mgmt_tx)
6194 return -EOPNOTSUPP;
6195
6196 switch (wdev->iftype) {
6197 case NL80211_IFTYPE_STATION:
6198 case NL80211_IFTYPE_ADHOC:
6199 case NL80211_IFTYPE_P2P_CLIENT:
6200 case NL80211_IFTYPE_AP:
6201 case NL80211_IFTYPE_AP_VLAN:
6202 case NL80211_IFTYPE_MESH_POINT:
6203 case NL80211_IFTYPE_P2P_GO:
6204 case NL80211_IFTYPE_P2P_DEVICE:
6205 break;
6206 default:
6207 return -EOPNOTSUPP;
6208 }
6209
6210 if (info->attrs[NL80211_ATTR_DURATION]) {
6211 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6212 return -EINVAL;
6213 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6214
6215 /*
6216 * We should wait on the channel for at least a minimum amount
6217 * of time (10ms) but no longer than the driver supports.
6218 */
6219 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6220 wait > rdev->wiphy.max_remain_on_channel_duration)
6221 return -EINVAL;
6222
6223 }
6224
6225 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
6226 if (!nl80211_valid_channel_type(info, &channel_type))
6227 return -EINVAL;
6228 channel_type_valid = true;
6229 }
6230
6231 offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6232
6233 if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6234 return -EINVAL;
6235
6236 no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6237
6238 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6239 chan = rdev_freq_to_chan(rdev, freq, channel_type);
6240 if (chan == NULL)
6241 return -EINVAL;
6242
6243 if (!dont_wait_for_ack) {
6244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6245 if (!msg)
6246 return -ENOMEM;
6247
6248 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6249 NL80211_CMD_FRAME);
6250
6251 if (IS_ERR(hdr)) {
6252 err = PTR_ERR(hdr);
6253 goto free_msg;
6254 }
6255 }
6256
6257 err = cfg80211_mlme_mgmt_tx(rdev, wdev, chan, offchan, channel_type,
6258 channel_type_valid, wait,
6259 nla_data(info->attrs[NL80211_ATTR_FRAME]),
6260 nla_len(info->attrs[NL80211_ATTR_FRAME]),
6261 no_cck, dont_wait_for_ack, &cookie);
6262 if (err)
6263 goto free_msg;
6264
6265 if (msg) {
6266 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6267 goto nla_put_failure;
6268
6269 genlmsg_end(msg, hdr);
6270 return genlmsg_reply(msg, info);
6271 }
6272
6273 return 0;
6274
6275 nla_put_failure:
6276 err = -ENOBUFS;
6277 free_msg:
6278 nlmsg_free(msg);
6279 return err;
6280 }
6281
6282 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6283 {
6284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6285 struct wireless_dev *wdev = info->user_ptr[1];
6286 u64 cookie;
6287
6288 if (!info->attrs[NL80211_ATTR_COOKIE])
6289 return -EINVAL;
6290
6291 if (!rdev->ops->mgmt_tx_cancel_wait)
6292 return -EOPNOTSUPP;
6293
6294 switch (wdev->iftype) {
6295 case NL80211_IFTYPE_STATION:
6296 case NL80211_IFTYPE_ADHOC:
6297 case NL80211_IFTYPE_P2P_CLIENT:
6298 case NL80211_IFTYPE_AP:
6299 case NL80211_IFTYPE_AP_VLAN:
6300 case NL80211_IFTYPE_P2P_GO:
6301 case NL80211_IFTYPE_P2P_DEVICE:
6302 break;
6303 default:
6304 return -EOPNOTSUPP;
6305 }
6306
6307 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6308
6309 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
6310 }
6311
6312 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6313 {
6314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6315 struct wireless_dev *wdev;
6316 struct net_device *dev = info->user_ptr[1];
6317 u8 ps_state;
6318 bool state;
6319 int err;
6320
6321 if (!info->attrs[NL80211_ATTR_PS_STATE])
6322 return -EINVAL;
6323
6324 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6325
6326 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6327 return -EINVAL;
6328
6329 wdev = dev->ieee80211_ptr;
6330
6331 if (!rdev->ops->set_power_mgmt)
6332 return -EOPNOTSUPP;
6333
6334 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6335
6336 if (state == wdev->ps)
6337 return 0;
6338
6339 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
6340 if (!err)
6341 wdev->ps = state;
6342 return err;
6343 }
6344
6345 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6346 {
6347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6348 enum nl80211_ps_state ps_state;
6349 struct wireless_dev *wdev;
6350 struct net_device *dev = info->user_ptr[1];
6351 struct sk_buff *msg;
6352 void *hdr;
6353 int err;
6354
6355 wdev = dev->ieee80211_ptr;
6356
6357 if (!rdev->ops->set_power_mgmt)
6358 return -EOPNOTSUPP;
6359
6360 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6361 if (!msg)
6362 return -ENOMEM;
6363
6364 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6365 NL80211_CMD_GET_POWER_SAVE);
6366 if (!hdr) {
6367 err = -ENOBUFS;
6368 goto free_msg;
6369 }
6370
6371 if (wdev->ps)
6372 ps_state = NL80211_PS_ENABLED;
6373 else
6374 ps_state = NL80211_PS_DISABLED;
6375
6376 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6377 goto nla_put_failure;
6378
6379 genlmsg_end(msg, hdr);
6380 return genlmsg_reply(msg, info);
6381
6382 nla_put_failure:
6383 err = -ENOBUFS;
6384 free_msg:
6385 nlmsg_free(msg);
6386 return err;
6387 }
6388
6389 static struct nla_policy
6390 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6391 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6392 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6393 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6394 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6395 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6396 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6397 };
6398
6399 static int nl80211_set_cqm_txe(struct genl_info *info,
6400 u32 rate, u32 pkts, u32 intvl)
6401 {
6402 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6403 struct wireless_dev *wdev;
6404 struct net_device *dev = info->user_ptr[1];
6405
6406 if ((rate < 0 || rate > 100) ||
6407 (intvl < 0 || intvl > NL80211_CQM_TXE_MAX_INTVL))
6408 return -EINVAL;
6409
6410 wdev = dev->ieee80211_ptr;
6411
6412 if (!rdev->ops->set_cqm_txe_config)
6413 return -EOPNOTSUPP;
6414
6415 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6416 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6417 return -EOPNOTSUPP;
6418
6419 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
6420 }
6421
6422 static int nl80211_set_cqm_rssi(struct genl_info *info,
6423 s32 threshold, u32 hysteresis)
6424 {
6425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6426 struct wireless_dev *wdev;
6427 struct net_device *dev = info->user_ptr[1];
6428
6429 if (threshold > 0)
6430 return -EINVAL;
6431
6432 wdev = dev->ieee80211_ptr;
6433
6434 if (!rdev->ops->set_cqm_rssi_config)
6435 return -EOPNOTSUPP;
6436
6437 if (wdev->iftype != NL80211_IFTYPE_STATION &&
6438 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6439 return -EOPNOTSUPP;
6440
6441 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
6442 }
6443
6444 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6445 {
6446 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6447 struct nlattr *cqm;
6448 int err;
6449
6450 cqm = info->attrs[NL80211_ATTR_CQM];
6451 if (!cqm) {
6452 err = -EINVAL;
6453 goto out;
6454 }
6455
6456 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6457 nl80211_attr_cqm_policy);
6458 if (err)
6459 goto out;
6460
6461 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6462 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6463 s32 threshold;
6464 u32 hysteresis;
6465 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6466 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6467 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6468 } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6469 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6470 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6471 u32 rate, pkts, intvl;
6472 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6473 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6474 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6475 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6476 } else
6477 err = -EINVAL;
6478
6479 out:
6480 return err;
6481 }
6482
6483 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6484 {
6485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6486 struct net_device *dev = info->user_ptr[1];
6487 struct mesh_config cfg;
6488 struct mesh_setup setup;
6489 int err;
6490
6491 /* start with default */
6492 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6493 memcpy(&setup, &default_mesh_setup, sizeof(setup));
6494
6495 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6496 /* and parse parameters if given */
6497 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6498 if (err)
6499 return err;
6500 }
6501
6502 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6503 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6504 return -EINVAL;
6505
6506 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6507 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6508
6509 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6510 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6511 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6512 return -EINVAL;
6513
6514 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6515 /* parse additional setup parameters if given */
6516 err = nl80211_parse_mesh_setup(info, &setup);
6517 if (err)
6518 return err;
6519 }
6520
6521 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6522 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6523
6524 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6525 !nl80211_valid_channel_type(info, &channel_type))
6526 return -EINVAL;
6527
6528 setup.channel = rdev_freq_to_chan(rdev,
6529 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6530 channel_type);
6531 if (!setup.channel)
6532 return -EINVAL;
6533 setup.channel_type = channel_type;
6534 } else {
6535 /* cfg80211_join_mesh() will sort it out */
6536 setup.channel = NULL;
6537 }
6538
6539 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6540 }
6541
6542 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6543 {
6544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6545 struct net_device *dev = info->user_ptr[1];
6546
6547 return cfg80211_leave_mesh(rdev, dev);
6548 }
6549
6550 #ifdef CONFIG_PM
6551 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6552 {
6553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6554 struct sk_buff *msg;
6555 void *hdr;
6556
6557 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6558 return -EOPNOTSUPP;
6559
6560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6561 if (!msg)
6562 return -ENOMEM;
6563
6564 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6565 NL80211_CMD_GET_WOWLAN);
6566 if (!hdr)
6567 goto nla_put_failure;
6568
6569 if (rdev->wowlan) {
6570 struct nlattr *nl_wowlan;
6571
6572 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6573 if (!nl_wowlan)
6574 goto nla_put_failure;
6575
6576 if ((rdev->wowlan->any &&
6577 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6578 (rdev->wowlan->disconnect &&
6579 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6580 (rdev->wowlan->magic_pkt &&
6581 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6582 (rdev->wowlan->gtk_rekey_failure &&
6583 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6584 (rdev->wowlan->eap_identity_req &&
6585 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6586 (rdev->wowlan->four_way_handshake &&
6587 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6588 (rdev->wowlan->rfkill_release &&
6589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6590 goto nla_put_failure;
6591 if (rdev->wowlan->n_patterns) {
6592 struct nlattr *nl_pats, *nl_pat;
6593 int i, pat_len;
6594
6595 nl_pats = nla_nest_start(msg,
6596 NL80211_WOWLAN_TRIG_PKT_PATTERN);
6597 if (!nl_pats)
6598 goto nla_put_failure;
6599
6600 for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6601 nl_pat = nla_nest_start(msg, i + 1);
6602 if (!nl_pat)
6603 goto nla_put_failure;
6604 pat_len = rdev->wowlan->patterns[i].pattern_len;
6605 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6606 DIV_ROUND_UP(pat_len, 8),
6607 rdev->wowlan->patterns[i].mask) ||
6608 nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6609 pat_len,
6610 rdev->wowlan->patterns[i].pattern))
6611 goto nla_put_failure;
6612 nla_nest_end(msg, nl_pat);
6613 }
6614 nla_nest_end(msg, nl_pats);
6615 }
6616
6617 nla_nest_end(msg, nl_wowlan);
6618 }
6619
6620 genlmsg_end(msg, hdr);
6621 return genlmsg_reply(msg, info);
6622
6623 nla_put_failure:
6624 nlmsg_free(msg);
6625 return -ENOBUFS;
6626 }
6627
6628 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6629 {
6630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6631 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6632 struct cfg80211_wowlan new_triggers = {};
6633 struct cfg80211_wowlan *ntrig;
6634 struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6635 int err, i;
6636 bool prev_enabled = rdev->wowlan;
6637
6638 if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6639 return -EOPNOTSUPP;
6640
6641 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6642 cfg80211_rdev_free_wowlan(rdev);
6643 rdev->wowlan = NULL;
6644 goto set_wakeup;
6645 }
6646
6647 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6648 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6649 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6650 nl80211_wowlan_policy);
6651 if (err)
6652 return err;
6653
6654 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6655 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6656 return -EINVAL;
6657 new_triggers.any = true;
6658 }
6659
6660 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6661 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6662 return -EINVAL;
6663 new_triggers.disconnect = true;
6664 }
6665
6666 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6667 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6668 return -EINVAL;
6669 new_triggers.magic_pkt = true;
6670 }
6671
6672 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6673 return -EINVAL;
6674
6675 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6676 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6677 return -EINVAL;
6678 new_triggers.gtk_rekey_failure = true;
6679 }
6680
6681 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6682 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6683 return -EINVAL;
6684 new_triggers.eap_identity_req = true;
6685 }
6686
6687 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6688 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6689 return -EINVAL;
6690 new_triggers.four_way_handshake = true;
6691 }
6692
6693 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6694 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6695 return -EINVAL;
6696 new_triggers.rfkill_release = true;
6697 }
6698
6699 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6700 struct nlattr *pat;
6701 int n_patterns = 0;
6702 int rem, pat_len, mask_len;
6703 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6704
6705 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6706 rem)
6707 n_patterns++;
6708 if (n_patterns > wowlan->n_patterns)
6709 return -EINVAL;
6710
6711 new_triggers.patterns = kcalloc(n_patterns,
6712 sizeof(new_triggers.patterns[0]),
6713 GFP_KERNEL);
6714 if (!new_triggers.patterns)
6715 return -ENOMEM;
6716
6717 new_triggers.n_patterns = n_patterns;
6718 i = 0;
6719
6720 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6721 rem) {
6722 nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6723 nla_data(pat), nla_len(pat), NULL);
6724 err = -EINVAL;
6725 if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6726 !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6727 goto error;
6728 pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6729 mask_len = DIV_ROUND_UP(pat_len, 8);
6730 if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6731 mask_len)
6732 goto error;
6733 if (pat_len > wowlan->pattern_max_len ||
6734 pat_len < wowlan->pattern_min_len)
6735 goto error;
6736
6737 new_triggers.patterns[i].mask =
6738 kmalloc(mask_len + pat_len, GFP_KERNEL);
6739 if (!new_triggers.patterns[i].mask) {
6740 err = -ENOMEM;
6741 goto error;
6742 }
6743 new_triggers.patterns[i].pattern =
6744 new_triggers.patterns[i].mask + mask_len;
6745 memcpy(new_triggers.patterns[i].mask,
6746 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6747 mask_len);
6748 new_triggers.patterns[i].pattern_len = pat_len;
6749 memcpy(new_triggers.patterns[i].pattern,
6750 nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6751 pat_len);
6752 i++;
6753 }
6754 }
6755
6756 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6757 if (!ntrig) {
6758 err = -ENOMEM;
6759 goto error;
6760 }
6761 cfg80211_rdev_free_wowlan(rdev);
6762 rdev->wowlan = ntrig;
6763
6764 set_wakeup:
6765 if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6766 rdev_set_wakeup(rdev, rdev->wowlan);
6767
6768 return 0;
6769 error:
6770 for (i = 0; i < new_triggers.n_patterns; i++)
6771 kfree(new_triggers.patterns[i].mask);
6772 kfree(new_triggers.patterns);
6773 return err;
6774 }
6775 #endif
6776
6777 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6778 {
6779 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6780 struct net_device *dev = info->user_ptr[1];
6781 struct wireless_dev *wdev = dev->ieee80211_ptr;
6782 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6783 struct cfg80211_gtk_rekey_data rekey_data;
6784 int err;
6785
6786 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6787 return -EINVAL;
6788
6789 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6790 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6791 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6792 nl80211_rekey_policy);
6793 if (err)
6794 return err;
6795
6796 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6797 return -ERANGE;
6798 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6799 return -ERANGE;
6800 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6801 return -ERANGE;
6802
6803 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6804 NL80211_KEK_LEN);
6805 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6806 NL80211_KCK_LEN);
6807 memcpy(rekey_data.replay_ctr,
6808 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6809 NL80211_REPLAY_CTR_LEN);
6810
6811 wdev_lock(wdev);
6812 if (!wdev->current_bss) {
6813 err = -ENOTCONN;
6814 goto out;
6815 }
6816
6817 if (!rdev->ops->set_rekey_data) {
6818 err = -EOPNOTSUPP;
6819 goto out;
6820 }
6821
6822 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
6823 out:
6824 wdev_unlock(wdev);
6825 return err;
6826 }
6827
6828 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6829 struct genl_info *info)
6830 {
6831 struct net_device *dev = info->user_ptr[1];
6832 struct wireless_dev *wdev = dev->ieee80211_ptr;
6833
6834 if (wdev->iftype != NL80211_IFTYPE_AP &&
6835 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6836 return -EINVAL;
6837
6838 if (wdev->ap_unexpected_nlportid)
6839 return -EBUSY;
6840
6841 wdev->ap_unexpected_nlportid = info->snd_portid;
6842 return 0;
6843 }
6844
6845 static int nl80211_probe_client(struct sk_buff *skb,
6846 struct genl_info *info)
6847 {
6848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6849 struct net_device *dev = info->user_ptr[1];
6850 struct wireless_dev *wdev = dev->ieee80211_ptr;
6851 struct sk_buff *msg;
6852 void *hdr;
6853 const u8 *addr;
6854 u64 cookie;
6855 int err;
6856
6857 if (wdev->iftype != NL80211_IFTYPE_AP &&
6858 wdev->iftype != NL80211_IFTYPE_P2P_GO)
6859 return -EOPNOTSUPP;
6860
6861 if (!info->attrs[NL80211_ATTR_MAC])
6862 return -EINVAL;
6863
6864 if (!rdev->ops->probe_client)
6865 return -EOPNOTSUPP;
6866
6867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6868 if (!msg)
6869 return -ENOMEM;
6870
6871 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6872 NL80211_CMD_PROBE_CLIENT);
6873
6874 if (IS_ERR(hdr)) {
6875 err = PTR_ERR(hdr);
6876 goto free_msg;
6877 }
6878
6879 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6880
6881 err = rdev_probe_client(rdev, dev, addr, &cookie);
6882 if (err)
6883 goto free_msg;
6884
6885 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6886 goto nla_put_failure;
6887
6888 genlmsg_end(msg, hdr);
6889
6890 return genlmsg_reply(msg, info);
6891
6892 nla_put_failure:
6893 err = -ENOBUFS;
6894 free_msg:
6895 nlmsg_free(msg);
6896 return err;
6897 }
6898
6899 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6900 {
6901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6902
6903 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6904 return -EOPNOTSUPP;
6905
6906 if (rdev->ap_beacons_nlportid)
6907 return -EBUSY;
6908
6909 rdev->ap_beacons_nlportid = info->snd_portid;
6910
6911 return 0;
6912 }
6913
6914 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
6915 {
6916 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6917 struct wireless_dev *wdev = info->user_ptr[1];
6918 int err;
6919
6920 if (!rdev->ops->start_p2p_device)
6921 return -EOPNOTSUPP;
6922
6923 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6924 return -EOPNOTSUPP;
6925
6926 if (wdev->p2p_started)
6927 return 0;
6928
6929 mutex_lock(&rdev->devlist_mtx);
6930 err = cfg80211_can_add_interface(rdev, wdev->iftype);
6931 mutex_unlock(&rdev->devlist_mtx);
6932 if (err)
6933 return err;
6934
6935 err = rdev_start_p2p_device(rdev, wdev);
6936 if (err)
6937 return err;
6938
6939 wdev->p2p_started = true;
6940 mutex_lock(&rdev->devlist_mtx);
6941 rdev->opencount++;
6942 mutex_unlock(&rdev->devlist_mtx);
6943
6944 return 0;
6945 }
6946
6947 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
6948 {
6949 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6950 struct wireless_dev *wdev = info->user_ptr[1];
6951
6952 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6953 return -EOPNOTSUPP;
6954
6955 if (!rdev->ops->stop_p2p_device)
6956 return -EOPNOTSUPP;
6957
6958 if (!wdev->p2p_started)
6959 return 0;
6960
6961 rdev_stop_p2p_device(rdev, wdev);
6962 wdev->p2p_started = false;
6963
6964 mutex_lock(&rdev->devlist_mtx);
6965 rdev->opencount--;
6966 mutex_unlock(&rdev->devlist_mtx);
6967
6968 if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
6969 rdev->scan_req->aborted = true;
6970 ___cfg80211_scan_done(rdev, true);
6971 }
6972
6973 return 0;
6974 }
6975
6976 #define NL80211_FLAG_NEED_WIPHY 0x01
6977 #define NL80211_FLAG_NEED_NETDEV 0x02
6978 #define NL80211_FLAG_NEED_RTNL 0x04
6979 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
6980 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
6981 NL80211_FLAG_CHECK_NETDEV_UP)
6982 #define NL80211_FLAG_NEED_WDEV 0x10
6983 /* If a netdev is associated, it must be UP, P2P must be started */
6984 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
6985 NL80211_FLAG_CHECK_NETDEV_UP)
6986
6987 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6988 struct genl_info *info)
6989 {
6990 struct cfg80211_registered_device *rdev;
6991 struct wireless_dev *wdev;
6992 struct net_device *dev;
6993 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6994
6995 if (rtnl)
6996 rtnl_lock();
6997
6998 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6999 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7000 if (IS_ERR(rdev)) {
7001 if (rtnl)
7002 rtnl_unlock();
7003 return PTR_ERR(rdev);
7004 }
7005 info->user_ptr[0] = rdev;
7006 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
7007 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7008 mutex_lock(&cfg80211_mutex);
7009 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
7010 info->attrs);
7011 if (IS_ERR(wdev)) {
7012 mutex_unlock(&cfg80211_mutex);
7013 if (rtnl)
7014 rtnl_unlock();
7015 return PTR_ERR(wdev);
7016 }
7017
7018 dev = wdev->netdev;
7019 rdev = wiphy_to_dev(wdev->wiphy);
7020
7021 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
7022 if (!dev) {
7023 mutex_unlock(&cfg80211_mutex);
7024 if (rtnl)
7025 rtnl_unlock();
7026 return -EINVAL;
7027 }
7028
7029 info->user_ptr[1] = dev;
7030 } else {
7031 info->user_ptr[1] = wdev;
7032 }
7033
7034 if (dev) {
7035 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
7036 !netif_running(dev)) {
7037 mutex_unlock(&cfg80211_mutex);
7038 if (rtnl)
7039 rtnl_unlock();
7040 return -ENETDOWN;
7041 }
7042
7043 dev_hold(dev);
7044 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
7045 if (!wdev->p2p_started) {
7046 mutex_unlock(&cfg80211_mutex);
7047 if (rtnl)
7048 rtnl_unlock();
7049 return -ENETDOWN;
7050 }
7051 }
7052
7053 cfg80211_lock_rdev(rdev);
7054
7055 mutex_unlock(&cfg80211_mutex);
7056
7057 info->user_ptr[0] = rdev;
7058 }
7059
7060 return 0;
7061 }
7062
7063 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
7064 struct genl_info *info)
7065 {
7066 if (info->user_ptr[0])
7067 cfg80211_unlock_rdev(info->user_ptr[0]);
7068 if (info->user_ptr[1]) {
7069 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7070 struct wireless_dev *wdev = info->user_ptr[1];
7071
7072 if (wdev->netdev)
7073 dev_put(wdev->netdev);
7074 } else {
7075 dev_put(info->user_ptr[1]);
7076 }
7077 }
7078 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7079 rtnl_unlock();
7080 }
7081
7082 static struct genl_ops nl80211_ops[] = {
7083 {
7084 .cmd = NL80211_CMD_GET_WIPHY,
7085 .doit = nl80211_get_wiphy,
7086 .dumpit = nl80211_dump_wiphy,
7087 .policy = nl80211_policy,
7088 /* can be retrieved by unprivileged users */
7089 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7090 },
7091 {
7092 .cmd = NL80211_CMD_SET_WIPHY,
7093 .doit = nl80211_set_wiphy,
7094 .policy = nl80211_policy,
7095 .flags = GENL_ADMIN_PERM,
7096 .internal_flags = NL80211_FLAG_NEED_RTNL,
7097 },
7098 {
7099 .cmd = NL80211_CMD_GET_INTERFACE,
7100 .doit = nl80211_get_interface,
7101 .dumpit = nl80211_dump_interface,
7102 .policy = nl80211_policy,
7103 /* can be retrieved by unprivileged users */
7104 .internal_flags = NL80211_FLAG_NEED_WDEV,
7105 },
7106 {
7107 .cmd = NL80211_CMD_SET_INTERFACE,
7108 .doit = nl80211_set_interface,
7109 .policy = nl80211_policy,
7110 .flags = GENL_ADMIN_PERM,
7111 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7112 NL80211_FLAG_NEED_RTNL,
7113 },
7114 {
7115 .cmd = NL80211_CMD_NEW_INTERFACE,
7116 .doit = nl80211_new_interface,
7117 .policy = nl80211_policy,
7118 .flags = GENL_ADMIN_PERM,
7119 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7120 NL80211_FLAG_NEED_RTNL,
7121 },
7122 {
7123 .cmd = NL80211_CMD_DEL_INTERFACE,
7124 .doit = nl80211_del_interface,
7125 .policy = nl80211_policy,
7126 .flags = GENL_ADMIN_PERM,
7127 .internal_flags = NL80211_FLAG_NEED_WDEV |
7128 NL80211_FLAG_NEED_RTNL,
7129 },
7130 {
7131 .cmd = NL80211_CMD_GET_KEY,
7132 .doit = nl80211_get_key,
7133 .policy = nl80211_policy,
7134 .flags = GENL_ADMIN_PERM,
7135 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7136 NL80211_FLAG_NEED_RTNL,
7137 },
7138 {
7139 .cmd = NL80211_CMD_SET_KEY,
7140 .doit = nl80211_set_key,
7141 .policy = nl80211_policy,
7142 .flags = GENL_ADMIN_PERM,
7143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7144 NL80211_FLAG_NEED_RTNL,
7145 },
7146 {
7147 .cmd = NL80211_CMD_NEW_KEY,
7148 .doit = nl80211_new_key,
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_DEL_KEY,
7156 .doit = nl80211_del_key,
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_SET_BEACON,
7164 .policy = nl80211_policy,
7165 .flags = GENL_ADMIN_PERM,
7166 .doit = nl80211_set_beacon,
7167 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7168 NL80211_FLAG_NEED_RTNL,
7169 },
7170 {
7171 .cmd = NL80211_CMD_START_AP,
7172 .policy = nl80211_policy,
7173 .flags = GENL_ADMIN_PERM,
7174 .doit = nl80211_start_ap,
7175 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7176 NL80211_FLAG_NEED_RTNL,
7177 },
7178 {
7179 .cmd = NL80211_CMD_STOP_AP,
7180 .policy = nl80211_policy,
7181 .flags = GENL_ADMIN_PERM,
7182 .doit = nl80211_stop_ap,
7183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7184 NL80211_FLAG_NEED_RTNL,
7185 },
7186 {
7187 .cmd = NL80211_CMD_GET_STATION,
7188 .doit = nl80211_get_station,
7189 .dumpit = nl80211_dump_station,
7190 .policy = nl80211_policy,
7191 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7192 NL80211_FLAG_NEED_RTNL,
7193 },
7194 {
7195 .cmd = NL80211_CMD_SET_STATION,
7196 .doit = nl80211_set_station,
7197 .policy = nl80211_policy,
7198 .flags = GENL_ADMIN_PERM,
7199 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7200 NL80211_FLAG_NEED_RTNL,
7201 },
7202 {
7203 .cmd = NL80211_CMD_NEW_STATION,
7204 .doit = nl80211_new_station,
7205 .policy = nl80211_policy,
7206 .flags = GENL_ADMIN_PERM,
7207 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7208 NL80211_FLAG_NEED_RTNL,
7209 },
7210 {
7211 .cmd = NL80211_CMD_DEL_STATION,
7212 .doit = nl80211_del_station,
7213 .policy = nl80211_policy,
7214 .flags = GENL_ADMIN_PERM,
7215 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7216 NL80211_FLAG_NEED_RTNL,
7217 },
7218 {
7219 .cmd = NL80211_CMD_GET_MPATH,
7220 .doit = nl80211_get_mpath,
7221 .dumpit = nl80211_dump_mpath,
7222 .policy = nl80211_policy,
7223 .flags = GENL_ADMIN_PERM,
7224 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7225 NL80211_FLAG_NEED_RTNL,
7226 },
7227 {
7228 .cmd = NL80211_CMD_SET_MPATH,
7229 .doit = nl80211_set_mpath,
7230 .policy = nl80211_policy,
7231 .flags = GENL_ADMIN_PERM,
7232 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7233 NL80211_FLAG_NEED_RTNL,
7234 },
7235 {
7236 .cmd = NL80211_CMD_NEW_MPATH,
7237 .doit = nl80211_new_mpath,
7238 .policy = nl80211_policy,
7239 .flags = GENL_ADMIN_PERM,
7240 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7241 NL80211_FLAG_NEED_RTNL,
7242 },
7243 {
7244 .cmd = NL80211_CMD_DEL_MPATH,
7245 .doit = nl80211_del_mpath,
7246 .policy = nl80211_policy,
7247 .flags = GENL_ADMIN_PERM,
7248 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7249 NL80211_FLAG_NEED_RTNL,
7250 },
7251 {
7252 .cmd = NL80211_CMD_SET_BSS,
7253 .doit = nl80211_set_bss,
7254 .policy = nl80211_policy,
7255 .flags = GENL_ADMIN_PERM,
7256 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7257 NL80211_FLAG_NEED_RTNL,
7258 },
7259 {
7260 .cmd = NL80211_CMD_GET_REG,
7261 .doit = nl80211_get_reg,
7262 .policy = nl80211_policy,
7263 /* can be retrieved by unprivileged users */
7264 },
7265 {
7266 .cmd = NL80211_CMD_SET_REG,
7267 .doit = nl80211_set_reg,
7268 .policy = nl80211_policy,
7269 .flags = GENL_ADMIN_PERM,
7270 },
7271 {
7272 .cmd = NL80211_CMD_REQ_SET_REG,
7273 .doit = nl80211_req_set_reg,
7274 .policy = nl80211_policy,
7275 .flags = GENL_ADMIN_PERM,
7276 },
7277 {
7278 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7279 .doit = nl80211_get_mesh_config,
7280 .policy = nl80211_policy,
7281 /* can be retrieved by unprivileged users */
7282 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7283 NL80211_FLAG_NEED_RTNL,
7284 },
7285 {
7286 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7287 .doit = nl80211_update_mesh_config,
7288 .policy = nl80211_policy,
7289 .flags = GENL_ADMIN_PERM,
7290 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7291 NL80211_FLAG_NEED_RTNL,
7292 },
7293 {
7294 .cmd = NL80211_CMD_TRIGGER_SCAN,
7295 .doit = nl80211_trigger_scan,
7296 .policy = nl80211_policy,
7297 .flags = GENL_ADMIN_PERM,
7298 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7299 NL80211_FLAG_NEED_RTNL,
7300 },
7301 {
7302 .cmd = NL80211_CMD_GET_SCAN,
7303 .policy = nl80211_policy,
7304 .dumpit = nl80211_dump_scan,
7305 },
7306 {
7307 .cmd = NL80211_CMD_START_SCHED_SCAN,
7308 .doit = nl80211_start_sched_scan,
7309 .policy = nl80211_policy,
7310 .flags = GENL_ADMIN_PERM,
7311 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7312 NL80211_FLAG_NEED_RTNL,
7313 },
7314 {
7315 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7316 .doit = nl80211_stop_sched_scan,
7317 .policy = nl80211_policy,
7318 .flags = GENL_ADMIN_PERM,
7319 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7320 NL80211_FLAG_NEED_RTNL,
7321 },
7322 {
7323 .cmd = NL80211_CMD_AUTHENTICATE,
7324 .doit = nl80211_authenticate,
7325 .policy = nl80211_policy,
7326 .flags = GENL_ADMIN_PERM,
7327 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7328 NL80211_FLAG_NEED_RTNL,
7329 },
7330 {
7331 .cmd = NL80211_CMD_ASSOCIATE,
7332 .doit = nl80211_associate,
7333 .policy = nl80211_policy,
7334 .flags = GENL_ADMIN_PERM,
7335 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7336 NL80211_FLAG_NEED_RTNL,
7337 },
7338 {
7339 .cmd = NL80211_CMD_DEAUTHENTICATE,
7340 .doit = nl80211_deauthenticate,
7341 .policy = nl80211_policy,
7342 .flags = GENL_ADMIN_PERM,
7343 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7344 NL80211_FLAG_NEED_RTNL,
7345 },
7346 {
7347 .cmd = NL80211_CMD_DISASSOCIATE,
7348 .doit = nl80211_disassociate,
7349 .policy = nl80211_policy,
7350 .flags = GENL_ADMIN_PERM,
7351 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7352 NL80211_FLAG_NEED_RTNL,
7353 },
7354 {
7355 .cmd = NL80211_CMD_JOIN_IBSS,
7356 .doit = nl80211_join_ibss,
7357 .policy = nl80211_policy,
7358 .flags = GENL_ADMIN_PERM,
7359 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7360 NL80211_FLAG_NEED_RTNL,
7361 },
7362 {
7363 .cmd = NL80211_CMD_LEAVE_IBSS,
7364 .doit = nl80211_leave_ibss,
7365 .policy = nl80211_policy,
7366 .flags = GENL_ADMIN_PERM,
7367 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7368 NL80211_FLAG_NEED_RTNL,
7369 },
7370 #ifdef CONFIG_NL80211_TESTMODE
7371 {
7372 .cmd = NL80211_CMD_TESTMODE,
7373 .doit = nl80211_testmode_do,
7374 .dumpit = nl80211_testmode_dump,
7375 .policy = nl80211_policy,
7376 .flags = GENL_ADMIN_PERM,
7377 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7378 NL80211_FLAG_NEED_RTNL,
7379 },
7380 #endif
7381 {
7382 .cmd = NL80211_CMD_CONNECT,
7383 .doit = nl80211_connect,
7384 .policy = nl80211_policy,
7385 .flags = GENL_ADMIN_PERM,
7386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7387 NL80211_FLAG_NEED_RTNL,
7388 },
7389 {
7390 .cmd = NL80211_CMD_DISCONNECT,
7391 .doit = nl80211_disconnect,
7392 .policy = nl80211_policy,
7393 .flags = GENL_ADMIN_PERM,
7394 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7395 NL80211_FLAG_NEED_RTNL,
7396 },
7397 {
7398 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7399 .doit = nl80211_wiphy_netns,
7400 .policy = nl80211_policy,
7401 .flags = GENL_ADMIN_PERM,
7402 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7403 NL80211_FLAG_NEED_RTNL,
7404 },
7405 {
7406 .cmd = NL80211_CMD_GET_SURVEY,
7407 .policy = nl80211_policy,
7408 .dumpit = nl80211_dump_survey,
7409 },
7410 {
7411 .cmd = NL80211_CMD_SET_PMKSA,
7412 .doit = nl80211_setdel_pmksa,
7413 .policy = nl80211_policy,
7414 .flags = GENL_ADMIN_PERM,
7415 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7416 NL80211_FLAG_NEED_RTNL,
7417 },
7418 {
7419 .cmd = NL80211_CMD_DEL_PMKSA,
7420 .doit = nl80211_setdel_pmksa,
7421 .policy = nl80211_policy,
7422 .flags = GENL_ADMIN_PERM,
7423 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7424 NL80211_FLAG_NEED_RTNL,
7425 },
7426 {
7427 .cmd = NL80211_CMD_FLUSH_PMKSA,
7428 .doit = nl80211_flush_pmksa,
7429 .policy = nl80211_policy,
7430 .flags = GENL_ADMIN_PERM,
7431 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7432 NL80211_FLAG_NEED_RTNL,
7433 },
7434 {
7435 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7436 .doit = nl80211_remain_on_channel,
7437 .policy = nl80211_policy,
7438 .flags = GENL_ADMIN_PERM,
7439 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7440 NL80211_FLAG_NEED_RTNL,
7441 },
7442 {
7443 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7444 .doit = nl80211_cancel_remain_on_channel,
7445 .policy = nl80211_policy,
7446 .flags = GENL_ADMIN_PERM,
7447 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7448 NL80211_FLAG_NEED_RTNL,
7449 },
7450 {
7451 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7452 .doit = nl80211_set_tx_bitrate_mask,
7453 .policy = nl80211_policy,
7454 .flags = GENL_ADMIN_PERM,
7455 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7456 NL80211_FLAG_NEED_RTNL,
7457 },
7458 {
7459 .cmd = NL80211_CMD_REGISTER_FRAME,
7460 .doit = nl80211_register_mgmt,
7461 .policy = nl80211_policy,
7462 .flags = GENL_ADMIN_PERM,
7463 .internal_flags = NL80211_FLAG_NEED_WDEV |
7464 NL80211_FLAG_NEED_RTNL,
7465 },
7466 {
7467 .cmd = NL80211_CMD_FRAME,
7468 .doit = nl80211_tx_mgmt,
7469 .policy = nl80211_policy,
7470 .flags = GENL_ADMIN_PERM,
7471 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7472 NL80211_FLAG_NEED_RTNL,
7473 },
7474 {
7475 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7476 .doit = nl80211_tx_mgmt_cancel_wait,
7477 .policy = nl80211_policy,
7478 .flags = GENL_ADMIN_PERM,
7479 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7480 NL80211_FLAG_NEED_RTNL,
7481 },
7482 {
7483 .cmd = NL80211_CMD_SET_POWER_SAVE,
7484 .doit = nl80211_set_power_save,
7485 .policy = nl80211_policy,
7486 .flags = GENL_ADMIN_PERM,
7487 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7488 NL80211_FLAG_NEED_RTNL,
7489 },
7490 {
7491 .cmd = NL80211_CMD_GET_POWER_SAVE,
7492 .doit = nl80211_get_power_save,
7493 .policy = nl80211_policy,
7494 /* can be retrieved by unprivileged users */
7495 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7496 NL80211_FLAG_NEED_RTNL,
7497 },
7498 {
7499 .cmd = NL80211_CMD_SET_CQM,
7500 .doit = nl80211_set_cqm,
7501 .policy = nl80211_policy,
7502 .flags = GENL_ADMIN_PERM,
7503 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7504 NL80211_FLAG_NEED_RTNL,
7505 },
7506 {
7507 .cmd = NL80211_CMD_SET_CHANNEL,
7508 .doit = nl80211_set_channel,
7509 .policy = nl80211_policy,
7510 .flags = GENL_ADMIN_PERM,
7511 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7512 NL80211_FLAG_NEED_RTNL,
7513 },
7514 {
7515 .cmd = NL80211_CMD_SET_WDS_PEER,
7516 .doit = nl80211_set_wds_peer,
7517 .policy = nl80211_policy,
7518 .flags = GENL_ADMIN_PERM,
7519 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7520 NL80211_FLAG_NEED_RTNL,
7521 },
7522 {
7523 .cmd = NL80211_CMD_JOIN_MESH,
7524 .doit = nl80211_join_mesh,
7525 .policy = nl80211_policy,
7526 .flags = GENL_ADMIN_PERM,
7527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7528 NL80211_FLAG_NEED_RTNL,
7529 },
7530 {
7531 .cmd = NL80211_CMD_LEAVE_MESH,
7532 .doit = nl80211_leave_mesh,
7533 .policy = nl80211_policy,
7534 .flags = GENL_ADMIN_PERM,
7535 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7536 NL80211_FLAG_NEED_RTNL,
7537 },
7538 #ifdef CONFIG_PM
7539 {
7540 .cmd = NL80211_CMD_GET_WOWLAN,
7541 .doit = nl80211_get_wowlan,
7542 .policy = nl80211_policy,
7543 /* can be retrieved by unprivileged users */
7544 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7545 NL80211_FLAG_NEED_RTNL,
7546 },
7547 {
7548 .cmd = NL80211_CMD_SET_WOWLAN,
7549 .doit = nl80211_set_wowlan,
7550 .policy = nl80211_policy,
7551 .flags = GENL_ADMIN_PERM,
7552 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7553 NL80211_FLAG_NEED_RTNL,
7554 },
7555 #endif
7556 {
7557 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7558 .doit = nl80211_set_rekey_data,
7559 .policy = nl80211_policy,
7560 .flags = GENL_ADMIN_PERM,
7561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7562 NL80211_FLAG_NEED_RTNL,
7563 },
7564 {
7565 .cmd = NL80211_CMD_TDLS_MGMT,
7566 .doit = nl80211_tdls_mgmt,
7567 .policy = nl80211_policy,
7568 .flags = GENL_ADMIN_PERM,
7569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7570 NL80211_FLAG_NEED_RTNL,
7571 },
7572 {
7573 .cmd = NL80211_CMD_TDLS_OPER,
7574 .doit = nl80211_tdls_oper,
7575 .policy = nl80211_policy,
7576 .flags = GENL_ADMIN_PERM,
7577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7578 NL80211_FLAG_NEED_RTNL,
7579 },
7580 {
7581 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7582 .doit = nl80211_register_unexpected_frame,
7583 .policy = nl80211_policy,
7584 .flags = GENL_ADMIN_PERM,
7585 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7586 NL80211_FLAG_NEED_RTNL,
7587 },
7588 {
7589 .cmd = NL80211_CMD_PROBE_CLIENT,
7590 .doit = nl80211_probe_client,
7591 .policy = nl80211_policy,
7592 .flags = GENL_ADMIN_PERM,
7593 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7594 NL80211_FLAG_NEED_RTNL,
7595 },
7596 {
7597 .cmd = NL80211_CMD_REGISTER_BEACONS,
7598 .doit = nl80211_register_beacons,
7599 .policy = nl80211_policy,
7600 .flags = GENL_ADMIN_PERM,
7601 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7602 NL80211_FLAG_NEED_RTNL,
7603 },
7604 {
7605 .cmd = NL80211_CMD_SET_NOACK_MAP,
7606 .doit = nl80211_set_noack_map,
7607 .policy = nl80211_policy,
7608 .flags = GENL_ADMIN_PERM,
7609 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7610 NL80211_FLAG_NEED_RTNL,
7611 },
7612 {
7613 .cmd = NL80211_CMD_START_P2P_DEVICE,
7614 .doit = nl80211_start_p2p_device,
7615 .policy = nl80211_policy,
7616 .flags = GENL_ADMIN_PERM,
7617 .internal_flags = NL80211_FLAG_NEED_WDEV |
7618 NL80211_FLAG_NEED_RTNL,
7619 },
7620 {
7621 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7622 .doit = nl80211_stop_p2p_device,
7623 .policy = nl80211_policy,
7624 .flags = GENL_ADMIN_PERM,
7625 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7626 NL80211_FLAG_NEED_RTNL,
7627 },
7628 };
7629
7630 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7631 .name = "mlme",
7632 };
7633
7634 /* multicast groups */
7635 static struct genl_multicast_group nl80211_config_mcgrp = {
7636 .name = "config",
7637 };
7638 static struct genl_multicast_group nl80211_scan_mcgrp = {
7639 .name = "scan",
7640 };
7641 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7642 .name = "regulatory",
7643 };
7644
7645 /* notification functions */
7646
7647 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7648 {
7649 struct sk_buff *msg;
7650
7651 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7652 if (!msg)
7653 return;
7654
7655 if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7656 nlmsg_free(msg);
7657 return;
7658 }
7659
7660 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7661 nl80211_config_mcgrp.id, GFP_KERNEL);
7662 }
7663
7664 static int nl80211_add_scan_req(struct sk_buff *msg,
7665 struct cfg80211_registered_device *rdev)
7666 {
7667 struct cfg80211_scan_request *req = rdev->scan_req;
7668 struct nlattr *nest;
7669 int i;
7670
7671 ASSERT_RDEV_LOCK(rdev);
7672
7673 if (WARN_ON(!req))
7674 return 0;
7675
7676 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7677 if (!nest)
7678 goto nla_put_failure;
7679 for (i = 0; i < req->n_ssids; i++) {
7680 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7681 goto nla_put_failure;
7682 }
7683 nla_nest_end(msg, nest);
7684
7685 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7686 if (!nest)
7687 goto nla_put_failure;
7688 for (i = 0; i < req->n_channels; i++) {
7689 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7690 goto nla_put_failure;
7691 }
7692 nla_nest_end(msg, nest);
7693
7694 if (req->ie &&
7695 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7696 goto nla_put_failure;
7697
7698 if (req->flags)
7699 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
7700
7701 return 0;
7702 nla_put_failure:
7703 return -ENOBUFS;
7704 }
7705
7706 static int nl80211_send_scan_msg(struct sk_buff *msg,
7707 struct cfg80211_registered_device *rdev,
7708 struct wireless_dev *wdev,
7709 u32 portid, u32 seq, int flags,
7710 u32 cmd)
7711 {
7712 void *hdr;
7713
7714 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7715 if (!hdr)
7716 return -1;
7717
7718 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7719 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7720 wdev->netdev->ifindex)) ||
7721 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7722 goto nla_put_failure;
7723
7724 /* ignore errors and send incomplete event anyway */
7725 nl80211_add_scan_req(msg, rdev);
7726
7727 return genlmsg_end(msg, hdr);
7728
7729 nla_put_failure:
7730 genlmsg_cancel(msg, hdr);
7731 return -EMSGSIZE;
7732 }
7733
7734 static int
7735 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7736 struct cfg80211_registered_device *rdev,
7737 struct net_device *netdev,
7738 u32 portid, u32 seq, int flags, u32 cmd)
7739 {
7740 void *hdr;
7741
7742 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7743 if (!hdr)
7744 return -1;
7745
7746 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7747 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7748 goto nla_put_failure;
7749
7750 return genlmsg_end(msg, hdr);
7751
7752 nla_put_failure:
7753 genlmsg_cancel(msg, hdr);
7754 return -EMSGSIZE;
7755 }
7756
7757 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7758 struct wireless_dev *wdev)
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_scan_msg(msg, rdev, wdev, 0, 0, 0,
7767 NL80211_CMD_TRIGGER_SCAN) < 0) {
7768 nlmsg_free(msg);
7769 return;
7770 }
7771
7772 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7773 nl80211_scan_mcgrp.id, GFP_KERNEL);
7774 }
7775
7776 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7777 struct wireless_dev *wdev)
7778 {
7779 struct sk_buff *msg;
7780
7781 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7782 if (!msg)
7783 return;
7784
7785 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7786 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7787 nlmsg_free(msg);
7788 return;
7789 }
7790
7791 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7792 nl80211_scan_mcgrp.id, GFP_KERNEL);
7793 }
7794
7795 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7796 struct wireless_dev *wdev)
7797 {
7798 struct sk_buff *msg;
7799
7800 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7801 if (!msg)
7802 return;
7803
7804 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7805 NL80211_CMD_SCAN_ABORTED) < 0) {
7806 nlmsg_free(msg);
7807 return;
7808 }
7809
7810 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7811 nl80211_scan_mcgrp.id, GFP_KERNEL);
7812 }
7813
7814 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7815 struct net_device *netdev)
7816 {
7817 struct sk_buff *msg;
7818
7819 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7820 if (!msg)
7821 return;
7822
7823 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7824 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7825 nlmsg_free(msg);
7826 return;
7827 }
7828
7829 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7830 nl80211_scan_mcgrp.id, GFP_KERNEL);
7831 }
7832
7833 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7834 struct net_device *netdev, u32 cmd)
7835 {
7836 struct sk_buff *msg;
7837
7838 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7839 if (!msg)
7840 return;
7841
7842 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7843 nlmsg_free(msg);
7844 return;
7845 }
7846
7847 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7848 nl80211_scan_mcgrp.id, GFP_KERNEL);
7849 }
7850
7851 /*
7852 * This can happen on global regulatory changes or device specific settings
7853 * based on custom world regulatory domains.
7854 */
7855 void nl80211_send_reg_change_event(struct regulatory_request *request)
7856 {
7857 struct sk_buff *msg;
7858 void *hdr;
7859
7860 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7861 if (!msg)
7862 return;
7863
7864 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7865 if (!hdr) {
7866 nlmsg_free(msg);
7867 return;
7868 }
7869
7870 /* Userspace can always count this one always being set */
7871 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7872 goto nla_put_failure;
7873
7874 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7875 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7876 NL80211_REGDOM_TYPE_WORLD))
7877 goto nla_put_failure;
7878 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7879 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7880 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7881 goto nla_put_failure;
7882 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7883 request->intersect) {
7884 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7885 NL80211_REGDOM_TYPE_INTERSECTION))
7886 goto nla_put_failure;
7887 } else {
7888 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7889 NL80211_REGDOM_TYPE_COUNTRY) ||
7890 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7891 request->alpha2))
7892 goto nla_put_failure;
7893 }
7894
7895 if (wiphy_idx_valid(request->wiphy_idx) &&
7896 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7897 goto nla_put_failure;
7898
7899 genlmsg_end(msg, hdr);
7900
7901 rcu_read_lock();
7902 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7903 GFP_ATOMIC);
7904 rcu_read_unlock();
7905
7906 return;
7907
7908 nla_put_failure:
7909 genlmsg_cancel(msg, hdr);
7910 nlmsg_free(msg);
7911 }
7912
7913 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7914 struct net_device *netdev,
7915 const u8 *buf, size_t len,
7916 enum nl80211_commands cmd, gfp_t gfp)
7917 {
7918 struct sk_buff *msg;
7919 void *hdr;
7920
7921 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7922 if (!msg)
7923 return;
7924
7925 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7926 if (!hdr) {
7927 nlmsg_free(msg);
7928 return;
7929 }
7930
7931 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7932 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7933 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7934 goto nla_put_failure;
7935
7936 genlmsg_end(msg, hdr);
7937
7938 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7939 nl80211_mlme_mcgrp.id, gfp);
7940 return;
7941
7942 nla_put_failure:
7943 genlmsg_cancel(msg, hdr);
7944 nlmsg_free(msg);
7945 }
7946
7947 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7948 struct net_device *netdev, const u8 *buf,
7949 size_t len, gfp_t gfp)
7950 {
7951 nl80211_send_mlme_event(rdev, netdev, buf, len,
7952 NL80211_CMD_AUTHENTICATE, gfp);
7953 }
7954
7955 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7956 struct net_device *netdev, const u8 *buf,
7957 size_t len, gfp_t gfp)
7958 {
7959 nl80211_send_mlme_event(rdev, netdev, buf, len,
7960 NL80211_CMD_ASSOCIATE, gfp);
7961 }
7962
7963 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7964 struct net_device *netdev, const u8 *buf,
7965 size_t len, gfp_t gfp)
7966 {
7967 nl80211_send_mlme_event(rdev, netdev, buf, len,
7968 NL80211_CMD_DEAUTHENTICATE, gfp);
7969 }
7970
7971 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7972 struct net_device *netdev, const u8 *buf,
7973 size_t len, gfp_t gfp)
7974 {
7975 nl80211_send_mlme_event(rdev, netdev, buf, len,
7976 NL80211_CMD_DISASSOCIATE, gfp);
7977 }
7978
7979 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7980 struct net_device *netdev, const u8 *buf,
7981 size_t len, gfp_t gfp)
7982 {
7983 nl80211_send_mlme_event(rdev, netdev, buf, len,
7984 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7985 }
7986
7987 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7988 struct net_device *netdev, const u8 *buf,
7989 size_t len, gfp_t gfp)
7990 {
7991 nl80211_send_mlme_event(rdev, netdev, buf, len,
7992 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7993 }
7994
7995 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7996 struct net_device *netdev, int cmd,
7997 const u8 *addr, gfp_t gfp)
7998 {
7999 struct sk_buff *msg;
8000 void *hdr;
8001
8002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8003 if (!msg)
8004 return;
8005
8006 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8007 if (!hdr) {
8008 nlmsg_free(msg);
8009 return;
8010 }
8011
8012 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8013 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8014 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
8015 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8016 goto nla_put_failure;
8017
8018 genlmsg_end(msg, hdr);
8019
8020 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8021 nl80211_mlme_mcgrp.id, gfp);
8022 return;
8023
8024 nla_put_failure:
8025 genlmsg_cancel(msg, hdr);
8026 nlmsg_free(msg);
8027 }
8028
8029 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
8030 struct net_device *netdev, const u8 *addr,
8031 gfp_t gfp)
8032 {
8033 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
8034 addr, gfp);
8035 }
8036
8037 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
8038 struct net_device *netdev, const u8 *addr,
8039 gfp_t gfp)
8040 {
8041 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
8042 addr, gfp);
8043 }
8044
8045 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
8046 struct net_device *netdev, const u8 *bssid,
8047 const u8 *req_ie, size_t req_ie_len,
8048 const u8 *resp_ie, size_t resp_ie_len,
8049 u16 status, gfp_t gfp)
8050 {
8051 struct sk_buff *msg;
8052 void *hdr;
8053
8054 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8055 if (!msg)
8056 return;
8057
8058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
8059 if (!hdr) {
8060 nlmsg_free(msg);
8061 return;
8062 }
8063
8064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8065 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8066 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
8067 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
8068 (req_ie &&
8069 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8070 (resp_ie &&
8071 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8072 goto nla_put_failure;
8073
8074 genlmsg_end(msg, hdr);
8075
8076 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8077 nl80211_mlme_mcgrp.id, gfp);
8078 return;
8079
8080 nla_put_failure:
8081 genlmsg_cancel(msg, hdr);
8082 nlmsg_free(msg);
8083
8084 }
8085
8086 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8087 struct net_device *netdev, const u8 *bssid,
8088 const u8 *req_ie, size_t req_ie_len,
8089 const u8 *resp_ie, size_t resp_ie_len, 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_ROAM);
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 (req_ie &&
8108 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8109 (resp_ie &&
8110 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8111 goto nla_put_failure;
8112
8113 genlmsg_end(msg, hdr);
8114
8115 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8116 nl80211_mlme_mcgrp.id, gfp);
8117 return;
8118
8119 nla_put_failure:
8120 genlmsg_cancel(msg, hdr);
8121 nlmsg_free(msg);
8122
8123 }
8124
8125 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8126 struct net_device *netdev, u16 reason,
8127 const u8 *ie, size_t ie_len, bool from_ap)
8128 {
8129 struct sk_buff *msg;
8130 void *hdr;
8131
8132 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8133 if (!msg)
8134 return;
8135
8136 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8137 if (!hdr) {
8138 nlmsg_free(msg);
8139 return;
8140 }
8141
8142 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8143 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8144 (from_ap && reason &&
8145 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8146 (from_ap &&
8147 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8148 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8149 goto nla_put_failure;
8150
8151 genlmsg_end(msg, hdr);
8152
8153 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8154 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8155 return;
8156
8157 nla_put_failure:
8158 genlmsg_cancel(msg, hdr);
8159 nlmsg_free(msg);
8160
8161 }
8162
8163 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8164 struct net_device *netdev, const u8 *bssid,
8165 gfp_t gfp)
8166 {
8167 struct sk_buff *msg;
8168 void *hdr;
8169
8170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8171 if (!msg)
8172 return;
8173
8174 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8175 if (!hdr) {
8176 nlmsg_free(msg);
8177 return;
8178 }
8179
8180 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8181 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8182 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8183 goto nla_put_failure;
8184
8185 genlmsg_end(msg, hdr);
8186
8187 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8188 nl80211_mlme_mcgrp.id, gfp);
8189 return;
8190
8191 nla_put_failure:
8192 genlmsg_cancel(msg, hdr);
8193 nlmsg_free(msg);
8194 }
8195
8196 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8197 struct net_device *netdev,
8198 const u8 *macaddr, const u8* ie, u8 ie_len,
8199 gfp_t gfp)
8200 {
8201 struct sk_buff *msg;
8202 void *hdr;
8203
8204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8205 if (!msg)
8206 return;
8207
8208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8209 if (!hdr) {
8210 nlmsg_free(msg);
8211 return;
8212 }
8213
8214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8216 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8217 (ie_len && ie &&
8218 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8219 goto nla_put_failure;
8220
8221 genlmsg_end(msg, hdr);
8222
8223 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8224 nl80211_mlme_mcgrp.id, gfp);
8225 return;
8226
8227 nla_put_failure:
8228 genlmsg_cancel(msg, hdr);
8229 nlmsg_free(msg);
8230 }
8231
8232 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8233 struct net_device *netdev, const u8 *addr,
8234 enum nl80211_key_type key_type, int key_id,
8235 const u8 *tsc, gfp_t gfp)
8236 {
8237 struct sk_buff *msg;
8238 void *hdr;
8239
8240 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8241 if (!msg)
8242 return;
8243
8244 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8245 if (!hdr) {
8246 nlmsg_free(msg);
8247 return;
8248 }
8249
8250 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8251 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8252 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8253 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8254 (key_id != -1 &&
8255 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8256 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8257 goto nla_put_failure;
8258
8259 genlmsg_end(msg, hdr);
8260
8261 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8262 nl80211_mlme_mcgrp.id, gfp);
8263 return;
8264
8265 nla_put_failure:
8266 genlmsg_cancel(msg, hdr);
8267 nlmsg_free(msg);
8268 }
8269
8270 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8271 struct ieee80211_channel *channel_before,
8272 struct ieee80211_channel *channel_after)
8273 {
8274 struct sk_buff *msg;
8275 void *hdr;
8276 struct nlattr *nl_freq;
8277
8278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8279 if (!msg)
8280 return;
8281
8282 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8283 if (!hdr) {
8284 nlmsg_free(msg);
8285 return;
8286 }
8287
8288 /*
8289 * Since we are applying the beacon hint to a wiphy we know its
8290 * wiphy_idx is valid
8291 */
8292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8293 goto nla_put_failure;
8294
8295 /* Before */
8296 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8297 if (!nl_freq)
8298 goto nla_put_failure;
8299 if (nl80211_msg_put_channel(msg, channel_before))
8300 goto nla_put_failure;
8301 nla_nest_end(msg, nl_freq);
8302
8303 /* After */
8304 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8305 if (!nl_freq)
8306 goto nla_put_failure;
8307 if (nl80211_msg_put_channel(msg, channel_after))
8308 goto nla_put_failure;
8309 nla_nest_end(msg, nl_freq);
8310
8311 genlmsg_end(msg, hdr);
8312
8313 rcu_read_lock();
8314 genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8315 GFP_ATOMIC);
8316 rcu_read_unlock();
8317
8318 return;
8319
8320 nla_put_failure:
8321 genlmsg_cancel(msg, hdr);
8322 nlmsg_free(msg);
8323 }
8324
8325 static void nl80211_send_remain_on_chan_event(
8326 int cmd, struct cfg80211_registered_device *rdev,
8327 struct wireless_dev *wdev, u64 cookie,
8328 struct ieee80211_channel *chan,
8329 enum nl80211_channel_type channel_type,
8330 unsigned int duration, gfp_t gfp)
8331 {
8332 struct sk_buff *msg;
8333 void *hdr;
8334
8335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8336 if (!msg)
8337 return;
8338
8339 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8340 if (!hdr) {
8341 nlmsg_free(msg);
8342 return;
8343 }
8344
8345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8346 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8347 wdev->netdev->ifindex)) ||
8348 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8349 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8350 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
8351 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8352 goto nla_put_failure;
8353
8354 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8355 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8356 goto nla_put_failure;
8357
8358 genlmsg_end(msg, hdr);
8359
8360 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8361 nl80211_mlme_mcgrp.id, gfp);
8362 return;
8363
8364 nla_put_failure:
8365 genlmsg_cancel(msg, hdr);
8366 nlmsg_free(msg);
8367 }
8368
8369 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8370 struct wireless_dev *wdev, u64 cookie,
8371 struct ieee80211_channel *chan,
8372 enum nl80211_channel_type channel_type,
8373 unsigned int duration, gfp_t gfp)
8374 {
8375 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8376 rdev, wdev, cookie, chan,
8377 channel_type, duration, gfp);
8378 }
8379
8380 void nl80211_send_remain_on_channel_cancel(
8381 struct cfg80211_registered_device *rdev,
8382 struct wireless_dev *wdev,
8383 u64 cookie, struct ieee80211_channel *chan,
8384 enum nl80211_channel_type channel_type, gfp_t gfp)
8385 {
8386 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8387 rdev, wdev, cookie, chan,
8388 channel_type, 0, gfp);
8389 }
8390
8391 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8392 struct net_device *dev, const u8 *mac_addr,
8393 struct station_info *sinfo, gfp_t gfp)
8394 {
8395 struct sk_buff *msg;
8396
8397 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8398 if (!msg)
8399 return;
8400
8401 if (nl80211_send_station(msg, 0, 0, 0,
8402 rdev, dev, mac_addr, sinfo) < 0) {
8403 nlmsg_free(msg);
8404 return;
8405 }
8406
8407 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8408 nl80211_mlme_mcgrp.id, gfp);
8409 }
8410
8411 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8412 struct net_device *dev, const u8 *mac_addr,
8413 gfp_t gfp)
8414 {
8415 struct sk_buff *msg;
8416 void *hdr;
8417
8418 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8419 if (!msg)
8420 return;
8421
8422 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8423 if (!hdr) {
8424 nlmsg_free(msg);
8425 return;
8426 }
8427
8428 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8429 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8430 goto nla_put_failure;
8431
8432 genlmsg_end(msg, hdr);
8433
8434 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8435 nl80211_mlme_mcgrp.id, gfp);
8436 return;
8437
8438 nla_put_failure:
8439 genlmsg_cancel(msg, hdr);
8440 nlmsg_free(msg);
8441 }
8442
8443 void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
8444 struct net_device *dev, const u8 *mac_addr,
8445 enum nl80211_connect_failed_reason reason,
8446 gfp_t gfp)
8447 {
8448 struct sk_buff *msg;
8449 void *hdr;
8450
8451 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8452 if (!msg)
8453 return;
8454
8455 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
8456 if (!hdr) {
8457 nlmsg_free(msg);
8458 return;
8459 }
8460
8461 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8462 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
8463 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
8464 goto nla_put_failure;
8465
8466 genlmsg_end(msg, hdr);
8467
8468 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8469 nl80211_mlme_mcgrp.id, gfp);
8470 return;
8471
8472 nla_put_failure:
8473 genlmsg_cancel(msg, hdr);
8474 nlmsg_free(msg);
8475 }
8476
8477 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8478 const u8 *addr, gfp_t gfp)
8479 {
8480 struct wireless_dev *wdev = dev->ieee80211_ptr;
8481 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8482 struct sk_buff *msg;
8483 void *hdr;
8484 int err;
8485 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
8486
8487 if (!nlportid)
8488 return false;
8489
8490 msg = nlmsg_new(100, gfp);
8491 if (!msg)
8492 return true;
8493
8494 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8495 if (!hdr) {
8496 nlmsg_free(msg);
8497 return true;
8498 }
8499
8500 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8501 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8502 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8503 goto nla_put_failure;
8504
8505 err = genlmsg_end(msg, hdr);
8506 if (err < 0) {
8507 nlmsg_free(msg);
8508 return true;
8509 }
8510
8511 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8512 return true;
8513
8514 nla_put_failure:
8515 genlmsg_cancel(msg, hdr);
8516 nlmsg_free(msg);
8517 return true;
8518 }
8519
8520 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8521 {
8522 return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8523 addr, gfp);
8524 }
8525
8526 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8527 const u8 *addr, gfp_t gfp)
8528 {
8529 return __nl80211_unexpected_frame(dev,
8530 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8531 addr, gfp);
8532 }
8533
8534 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8535 struct wireless_dev *wdev, u32 nlportid,
8536 int freq, int sig_dbm,
8537 const u8 *buf, size_t len, gfp_t gfp)
8538 {
8539 struct net_device *netdev = wdev->netdev;
8540 struct sk_buff *msg;
8541 void *hdr;
8542
8543 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8544 if (!msg)
8545 return -ENOMEM;
8546
8547 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8548 if (!hdr) {
8549 nlmsg_free(msg);
8550 return -ENOMEM;
8551 }
8552
8553 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8554 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8555 netdev->ifindex)) ||
8556 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8557 (sig_dbm &&
8558 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8559 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8560 goto nla_put_failure;
8561
8562 genlmsg_end(msg, hdr);
8563
8564 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8565
8566 nla_put_failure:
8567 genlmsg_cancel(msg, hdr);
8568 nlmsg_free(msg);
8569 return -ENOBUFS;
8570 }
8571
8572 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8573 struct wireless_dev *wdev, u64 cookie,
8574 const u8 *buf, size_t len, bool ack,
8575 gfp_t gfp)
8576 {
8577 struct net_device *netdev = wdev->netdev;
8578 struct sk_buff *msg;
8579 void *hdr;
8580
8581 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8582 if (!msg)
8583 return;
8584
8585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8586 if (!hdr) {
8587 nlmsg_free(msg);
8588 return;
8589 }
8590
8591 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8592 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8593 netdev->ifindex)) ||
8594 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8595 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8596 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8597 goto nla_put_failure;
8598
8599 genlmsg_end(msg, hdr);
8600
8601 genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8602 return;
8603
8604 nla_put_failure:
8605 genlmsg_cancel(msg, hdr);
8606 nlmsg_free(msg);
8607 }
8608
8609 void
8610 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8611 struct net_device *netdev,
8612 enum nl80211_cqm_rssi_threshold_event rssi_event,
8613 gfp_t gfp)
8614 {
8615 struct sk_buff *msg;
8616 struct nlattr *pinfoattr;
8617 void *hdr;
8618
8619 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8620 if (!msg)
8621 return;
8622
8623 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8624 if (!hdr) {
8625 nlmsg_free(msg);
8626 return;
8627 }
8628
8629 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8630 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8631 goto nla_put_failure;
8632
8633 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8634 if (!pinfoattr)
8635 goto nla_put_failure;
8636
8637 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8638 rssi_event))
8639 goto nla_put_failure;
8640
8641 nla_nest_end(msg, pinfoattr);
8642
8643 genlmsg_end(msg, hdr);
8644
8645 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8646 nl80211_mlme_mcgrp.id, gfp);
8647 return;
8648
8649 nla_put_failure:
8650 genlmsg_cancel(msg, hdr);
8651 nlmsg_free(msg);
8652 }
8653
8654 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8655 struct net_device *netdev, const u8 *bssid,
8656 const u8 *replay_ctr, gfp_t gfp)
8657 {
8658 struct sk_buff *msg;
8659 struct nlattr *rekey_attr;
8660 void *hdr;
8661
8662 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8663 if (!msg)
8664 return;
8665
8666 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8667 if (!hdr) {
8668 nlmsg_free(msg);
8669 return;
8670 }
8671
8672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8675 goto nla_put_failure;
8676
8677 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8678 if (!rekey_attr)
8679 goto nla_put_failure;
8680
8681 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8682 NL80211_REPLAY_CTR_LEN, replay_ctr))
8683 goto nla_put_failure;
8684
8685 nla_nest_end(msg, rekey_attr);
8686
8687 genlmsg_end(msg, hdr);
8688
8689 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8690 nl80211_mlme_mcgrp.id, gfp);
8691 return;
8692
8693 nla_put_failure:
8694 genlmsg_cancel(msg, hdr);
8695 nlmsg_free(msg);
8696 }
8697
8698 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8699 struct net_device *netdev, int index,
8700 const u8 *bssid, bool preauth, gfp_t gfp)
8701 {
8702 struct sk_buff *msg;
8703 struct nlattr *attr;
8704 void *hdr;
8705
8706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8707 if (!msg)
8708 return;
8709
8710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8711 if (!hdr) {
8712 nlmsg_free(msg);
8713 return;
8714 }
8715
8716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8717 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8718 goto nla_put_failure;
8719
8720 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8721 if (!attr)
8722 goto nla_put_failure;
8723
8724 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8725 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8726 (preauth &&
8727 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8728 goto nla_put_failure;
8729
8730 nla_nest_end(msg, attr);
8731
8732 genlmsg_end(msg, hdr);
8733
8734 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8735 nl80211_mlme_mcgrp.id, gfp);
8736 return;
8737
8738 nla_put_failure:
8739 genlmsg_cancel(msg, hdr);
8740 nlmsg_free(msg);
8741 }
8742
8743 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8744 struct net_device *netdev, int freq,
8745 enum nl80211_channel_type type, gfp_t gfp)
8746 {
8747 struct sk_buff *msg;
8748 void *hdr;
8749
8750 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8751 if (!msg)
8752 return;
8753
8754 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8755 if (!hdr) {
8756 nlmsg_free(msg);
8757 return;
8758 }
8759
8760 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8761 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8762 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8763 goto nla_put_failure;
8764
8765 genlmsg_end(msg, hdr);
8766
8767 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8768 nl80211_mlme_mcgrp.id, gfp);
8769 return;
8770
8771 nla_put_failure:
8772 genlmsg_cancel(msg, hdr);
8773 nlmsg_free(msg);
8774 }
8775
8776 void
8777 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8778 struct net_device *netdev, const u8 *peer,
8779 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8780 {
8781 struct sk_buff *msg;
8782 struct nlattr *pinfoattr;
8783 void *hdr;
8784
8785 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8786 if (!msg)
8787 return;
8788
8789 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8790 if (!hdr) {
8791 nlmsg_free(msg);
8792 return;
8793 }
8794
8795 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8796 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8797 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8798 goto nla_put_failure;
8799
8800 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8801 if (!pinfoattr)
8802 goto nla_put_failure;
8803
8804 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8805 goto nla_put_failure;
8806
8807 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8808 goto nla_put_failure;
8809
8810 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8811 goto nla_put_failure;
8812
8813 nla_nest_end(msg, pinfoattr);
8814
8815 genlmsg_end(msg, hdr);
8816
8817 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8818 nl80211_mlme_mcgrp.id, gfp);
8819 return;
8820
8821 nla_put_failure:
8822 genlmsg_cancel(msg, hdr);
8823 nlmsg_free(msg);
8824 }
8825
8826 void
8827 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8828 struct net_device *netdev, const u8 *peer,
8829 u32 num_packets, gfp_t gfp)
8830 {
8831 struct sk_buff *msg;
8832 struct nlattr *pinfoattr;
8833 void *hdr;
8834
8835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8836 if (!msg)
8837 return;
8838
8839 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8840 if (!hdr) {
8841 nlmsg_free(msg);
8842 return;
8843 }
8844
8845 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8846 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8847 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8848 goto nla_put_failure;
8849
8850 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8851 if (!pinfoattr)
8852 goto nla_put_failure;
8853
8854 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8855 goto nla_put_failure;
8856
8857 nla_nest_end(msg, pinfoattr);
8858
8859 genlmsg_end(msg, hdr);
8860
8861 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8862 nl80211_mlme_mcgrp.id, gfp);
8863 return;
8864
8865 nla_put_failure:
8866 genlmsg_cancel(msg, hdr);
8867 nlmsg_free(msg);
8868 }
8869
8870 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8871 u64 cookie, bool acked, gfp_t gfp)
8872 {
8873 struct wireless_dev *wdev = dev->ieee80211_ptr;
8874 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8875 struct sk_buff *msg;
8876 void *hdr;
8877 int err;
8878
8879 trace_cfg80211_probe_status(dev, addr, cookie, acked);
8880
8881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8882
8883 if (!msg)
8884 return;
8885
8886 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8887 if (!hdr) {
8888 nlmsg_free(msg);
8889 return;
8890 }
8891
8892 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8893 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8894 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8895 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8896 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8897 goto nla_put_failure;
8898
8899 err = genlmsg_end(msg, hdr);
8900 if (err < 0) {
8901 nlmsg_free(msg);
8902 return;
8903 }
8904
8905 genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8906 nl80211_mlme_mcgrp.id, gfp);
8907 return;
8908
8909 nla_put_failure:
8910 genlmsg_cancel(msg, hdr);
8911 nlmsg_free(msg);
8912 }
8913 EXPORT_SYMBOL(cfg80211_probe_status);
8914
8915 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8916 const u8 *frame, size_t len,
8917 int freq, int sig_dbm, gfp_t gfp)
8918 {
8919 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8920 struct sk_buff *msg;
8921 void *hdr;
8922 u32 nlportid = ACCESS_ONCE(rdev->ap_beacons_nlportid);
8923
8924 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
8925
8926 if (!nlportid)
8927 return;
8928
8929 msg = nlmsg_new(len + 100, gfp);
8930 if (!msg)
8931 return;
8932
8933 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8934 if (!hdr) {
8935 nlmsg_free(msg);
8936 return;
8937 }
8938
8939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8940 (freq &&
8941 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8942 (sig_dbm &&
8943 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8944 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8945 goto nla_put_failure;
8946
8947 genlmsg_end(msg, hdr);
8948
8949 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8950 return;
8951
8952 nla_put_failure:
8953 genlmsg_cancel(msg, hdr);
8954 nlmsg_free(msg);
8955 }
8956 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8957
8958 static int nl80211_netlink_notify(struct notifier_block * nb,
8959 unsigned long state,
8960 void *_notify)
8961 {
8962 struct netlink_notify *notify = _notify;
8963 struct cfg80211_registered_device *rdev;
8964 struct wireless_dev *wdev;
8965
8966 if (state != NETLINK_URELEASE)
8967 return NOTIFY_DONE;
8968
8969 rcu_read_lock();
8970
8971 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8972 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
8973 cfg80211_mlme_unregister_socket(wdev, notify->portid);
8974 if (rdev->ap_beacons_nlportid == notify->portid)
8975 rdev->ap_beacons_nlportid = 0;
8976 }
8977
8978 rcu_read_unlock();
8979
8980 return NOTIFY_DONE;
8981 }
8982
8983 static struct notifier_block nl80211_netlink_notifier = {
8984 .notifier_call = nl80211_netlink_notify,
8985 };
8986
8987 /* initialisation/exit functions */
8988
8989 int nl80211_init(void)
8990 {
8991 int err;
8992
8993 err = genl_register_family_with_ops(&nl80211_fam,
8994 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8995 if (err)
8996 return err;
8997
8998 err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8999 if (err)
9000 goto err_out;
9001
9002 err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
9003 if (err)
9004 goto err_out;
9005
9006 err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
9007 if (err)
9008 goto err_out;
9009
9010 err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
9011 if (err)
9012 goto err_out;
9013
9014 #ifdef CONFIG_NL80211_TESTMODE
9015 err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
9016 if (err)
9017 goto err_out;
9018 #endif
9019
9020 err = netlink_register_notifier(&nl80211_netlink_notifier);
9021 if (err)
9022 goto err_out;
9023
9024 return 0;
9025 err_out:
9026 genl_unregister_family(&nl80211_fam);
9027 return err;
9028 }
9029
9030 void nl80211_exit(void)
9031 {
9032 netlink_unregister_notifier(&nl80211_netlink_notifier);
9033 genl_unregister_family(&nl80211_fam);
9034 }
Linux kernel - Deliverables
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